net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015-2016  Intel Deutschland GmbH
   7  */
   8
   9 #include <linux/if.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/nl80211.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/netlink.h>
  19 #include <linux/etherdevice.h>
  20 #include <net/net_namespace.h>
  21 #include <net/genetlink.h>
  22 #include <net/cfg80211.h>
  23 #include <net/sock.h>
  24 #include <net/inet_connection_sock.h>
  25 #include "core.h"
  26 #include "nl80211.h"
  27 #include "reg.h"
  28 #include "rdev-ops.h"
  29
  30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  31                                    struct genl_info *info,
  32                                    struct cfg80211_crypto_settings *settings,
  33                                    int cipher_limit);
  34
  35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  36                             struct genl_info *info);
  37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  38                               struct genl_info *info);
  39
  40 /* the netlink family */
  41 static struct genl_family nl80211_fam = {
  42         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  43         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  44         .hdrsize = 0,                   /* no private header */
  45         .version = 1,                   /* no particular meaning now */
  46         .maxattr = NL80211_ATTR_MAX,
  47         .netnsok = true,
  48         .pre_doit = nl80211_pre_doit,
  49         .post_doit = nl80211_post_doit,
  50 };
  51
  52 /* multicast groups */
  53 enum nl80211_multicast_groups {
  54         NL80211_MCGRP_CONFIG,
  55         NL80211_MCGRP_SCAN,
  56         NL80211_MCGRP_REGULATORY,
  57         NL80211_MCGRP_MLME,
  58         NL80211_MCGRP_VENDOR,
  59         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  60 };
  61
  62 static const struct genl_multicast_group nl80211_mcgrps[] = {
  63         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  64         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  65         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  66         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  67         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  68 #ifdef CONFIG_NL80211_TESTMODE
  69         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  70 #endif
  71 };
  72
  73 /* returns ERR_PTR values */
  74 static struct wireless_dev *
  75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  76 {
  77         struct cfg80211_registered_device *rdev;
  78         struct wireless_dev *result = NULL;
  79         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  80         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  81         u64 wdev_id;
  82         int wiphy_idx = -1;
  83         int ifidx = -1;
  84
  85         ASSERT_RTNL();
  86
  87         if (!have_ifidx && !have_wdev_id)
  88                 return ERR_PTR(-EINVAL);
  89
  90         if (have_ifidx)
  91                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  92         if (have_wdev_id) {
  93                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  94                 wiphy_idx = wdev_id >> 32;
  95         }
  96
  97         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  98                 struct wireless_dev *wdev;
  99
 100                 if (wiphy_net(&rdev->wiphy) != netns)
 101                         continue;
 102
 103                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 104                         continue;
 105
 106                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 107                         if (have_ifidx && wdev->netdev &&
 108                             wdev->netdev->ifindex == ifidx) {
 109                                 result = wdev;
 110                                 break;
 111                         }
 112                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 113                                 result = wdev;
 114                                 break;
 115                         }
 116                 }
 117
 118                 if (result)
 119                         break;
 120         }
 121
 122         if (result)
 123                 return result;
 124         return ERR_PTR(-ENODEV);
 125 }
 126
 127 static struct cfg80211_registered_device *
 128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 129 {
 130         struct cfg80211_registered_device *rdev = NULL, *tmp;
 131         struct net_device *netdev;
 132
 133         ASSERT_RTNL();
 134
 135         if (!attrs[NL80211_ATTR_WIPHY] &&
 136             !attrs[NL80211_ATTR_IFINDEX] &&
 137             !attrs[NL80211_ATTR_WDEV])
 138                 return ERR_PTR(-EINVAL);
 139
 140         if (attrs[NL80211_ATTR_WIPHY])
 141                 rdev = cfg80211_rdev_by_wiphy_idx(
 142                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 143
 144         if (attrs[NL80211_ATTR_WDEV]) {
 145                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 146                 struct wireless_dev *wdev;
 147                 bool found = false;
 148
 149                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 150                 if (tmp) {
 151                         /* make sure wdev exists */
 152                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 153                                 if (wdev->identifier != (u32)wdev_id)
 154                                         continue;
 155                                 found = true;
 156                                 break;
 157                         }
 158
 159                         if (!found)
 160                                 tmp = NULL;
 161
 162                         if (rdev && tmp != rdev)
 163                                 return ERR_PTR(-EINVAL);
 164                         rdev = tmp;
 165                 }
 166         }
 167
 168         if (attrs[NL80211_ATTR_IFINDEX]) {
 169                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 170
 171                 netdev = __dev_get_by_index(netns, ifindex);
 172                 if (netdev) {
 173                         if (netdev->ieee80211_ptr)
 174                                 tmp = wiphy_to_rdev(
 175                                         netdev->ieee80211_ptr->wiphy);
 176                         else
 177                                 tmp = NULL;
 178
 179                         /* not wireless device -- return error */
 180                         if (!tmp)
 181                                 return ERR_PTR(-EINVAL);
 182
 183                         /* mismatch -- return error */
 184                         if (rdev && tmp != rdev)
 185                                 return ERR_PTR(-EINVAL);
 186
 187                         rdev = tmp;
 188                 }
 189         }
 190
 191         if (!rdev)
 192                 return ERR_PTR(-ENODEV);
 193
 194         if (netns != wiphy_net(&rdev->wiphy))
 195                 return ERR_PTR(-ENODEV);
 196
 197         return rdev;
 198 }
 199
 200 /*
 201  * This function returns a pointer to the driver
 202  * that the genl_info item that is passed refers to.
 203  *
 204  * The result of this can be a PTR_ERR and hence must
 205  * be checked with IS_ERR() for errors.
 206  */
 207 static struct cfg80211_registered_device *
 208 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 209 {
 210         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 211 }
 212
 213 /* policy for the attributes */
 214 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 215         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 216         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 217                                       .len = 20-1 },
 218         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 219
 220         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 221         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 223         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 224         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 227         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 228         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 229         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 230         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 231         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 232
 233         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 234         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 235         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 236
 237         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 238         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 239
 240         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 241         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 242                                     .len = WLAN_MAX_KEY_LEN },
 243         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 244         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 245         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 246         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 247         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 248
 249         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 250         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 251         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 254                                        .len = IEEE80211_MAX_DATA_LEN },
 255         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 257         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 258         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 259                                                .len = NL80211_MAX_SUPP_RATES },
 260         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 261         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 262         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 263         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 264                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 265         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 266
 267         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 268         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 269
 270         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 272         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 273         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 274                                            .len = NL80211_MAX_SUPP_RATES },
 275         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 276
 277         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 278         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 279
 280         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 281
 282         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 283         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 284                               .len = IEEE80211_MAX_DATA_LEN },
 285         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 286         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 287
 288         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 289                                 .len = IEEE80211_MAX_SSID_LEN },
 290         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 291         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 292         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 295         [NL80211_ATTR_STA_FLAGS2] = {
 296                 .len = sizeof(struct nl80211_sta_flag_update),
 297         },
 298         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 300         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 301         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 303         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 304         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 305         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 306         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 307                                  .len = WLAN_PMKID_LEN },
 308         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 309         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 310         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 311         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 312                                  .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 314         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 315         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 316         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 317         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 318         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 319         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 320         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 321         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 322         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 323         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 324         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 325         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 327         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 328         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 329         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 330         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 331         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 332         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 335                                          .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 338         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 339         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 341         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 342         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 346         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 347                                       .len = IEEE80211_MAX_DATA_LEN },
 348         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 349         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 350         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 351                 .len = NL80211_HT_CAPABILITY_LEN
 352         },
 353         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 354         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 355         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 356         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 357         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 358         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 359         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 360         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 361         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 362         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 363         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 364         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 365         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 366         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 367         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 368         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 369         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 370                 .len = NL80211_VHT_CAPABILITY_LEN,
 371         },
 372         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 373         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 374                                   .len = IEEE80211_MAX_DATA_LEN },
 375         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 376         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 377         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 378         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 379         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 382         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 385         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 386         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 387         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 388         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 389                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 390         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 391         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 392         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 393         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 395         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 397         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 398         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 399         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 400         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 401         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 402         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 403         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 404         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 405         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 406         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 407         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 408         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 409                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 410         },
 411         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 412 };
 413
 414 /* policy for the key attributes */
 415 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 416         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 417         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 418         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 419         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 420         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 421         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 422         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 423         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 424 };
 425
 426 /* policy for the key default flags */
 427 static const struct nla_policy
 428 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 429         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 430         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 431 };
 432
 433 /* policy for WoWLAN attributes */
 434 static const struct nla_policy
 435 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 436         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 437         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 438         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 439         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 440         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 441         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 442         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 443         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 444         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 445         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 446 };
 447
 448 static const struct nla_policy
 449 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 450         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 452         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 453         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 454         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 455         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 456         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 457                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 458         },
 459         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 460                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 461         },
 462         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 463         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 464         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 465 };
 466
 467 /* policy for coalesce rule attributes */
 468 static const struct nla_policy
 469 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 470         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 471         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 472         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 473 };
 474
 475 /* policy for GTK rekey offload attributes */
 476 static const struct nla_policy
 477 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 478         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 479         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 480         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 481 };
 482
 483 static const struct nla_policy
 484 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 485         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 486                                                  .len = IEEE80211_MAX_SSID_LEN },
 487         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 488 };
 489
 490 static const struct nla_policy
 491 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 492         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 493         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 494 };
 495
 496 static const struct nla_policy
 497 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 498         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 499         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 500         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 501                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 502         },
 503 };
 504
 505 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 506                                      struct netlink_callback *cb,
 507                                      struct cfg80211_registered_device **rdev,
 508                                      struct wireless_dev **wdev)
 509 {
 510         int err;
 511
 512         rtnl_lock();
 513
 514         if (!cb->args[0]) {
 515                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 516                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 517                                   nl80211_policy);
 518                 if (err)
 519                         goto out_unlock;
 520
 521                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 522                                                    nl80211_fam.attrbuf);
 523                 if (IS_ERR(*wdev)) {
 524                         err = PTR_ERR(*wdev);
 525                         goto out_unlock;
 526                 }
 527                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 528                 /* 0 is the first index - add 1 to parse only once */
 529                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 530                 cb->args[1] = (*wdev)->identifier;
 531         } else {
 532                 /* subtract the 1 again here */
 533                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 534                 struct wireless_dev *tmp;
 535
 536                 if (!wiphy) {
 537                         err = -ENODEV;
 538                         goto out_unlock;
 539                 }
 540                 *rdev = wiphy_to_rdev(wiphy);
 541                 *wdev = NULL;
 542
 543                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 544                         if (tmp->identifier == cb->args[1]) {
 545                                 *wdev = tmp;
 546                                 break;
 547                         }
 548                 }
 549
 550                 if (!*wdev) {
 551                         err = -ENODEV;
 552                         goto out_unlock;
 553                 }
 554         }
 555
 556         return 0;
 557  out_unlock:
 558         rtnl_unlock();
 559         return err;
 560 }
 561
 562 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 563 {
 564         rtnl_unlock();
 565 }
 566
 567 /* IE validation */
 568 static bool is_valid_ie_attr(const struct nlattr *attr)
 569 {
 570         const u8 *pos;
 571         int len;
 572
 573         if (!attr)
 574                 return true;
 575
 576         pos = nla_data(attr);
 577         len = nla_len(attr);
 578
 579         while (len) {
 580                 u8 elemlen;
 581
 582                 if (len < 2)
 583                         return false;
 584                 len -= 2;
 585
 586                 elemlen = pos[1];
 587                 if (elemlen > len)
 588                         return false;
 589
 590                 len -= elemlen;
 591                 pos += 2 + elemlen;
 592         }
 593
 594         return true;
 595 }
 596
 597 /* message building helper */
 598 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 599                                    int flags, u8 cmd)
 600 {
 601         /* since there is no private header just add the generic one */
 602         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 603 }
 604
 605 static int nl80211_msg_put_channel(struct sk_buff *msg,
 606                                    struct ieee80211_channel *chan,
 607                                    bool large)
 608 {
 609         /* Some channels must be completely excluded from the
 610          * list to protect old user-space tools from breaking
 611          */
 612         if (!large && chan->flags &
 613             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 614                 return 0;
 615
 616         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 617                         chan->center_freq))
 618                 goto nla_put_failure;
 619
 620         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 621             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 622                 goto nla_put_failure;
 623         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 624                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 625                         goto nla_put_failure;
 626                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 627                         goto nla_put_failure;
 628         }
 629         if (chan->flags & IEEE80211_CHAN_RADAR) {
 630                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 631                         goto nla_put_failure;
 632                 if (large) {
 633                         u32 time;
 634
 635                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 636
 637                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 638                                         chan->dfs_state))
 639                                 goto nla_put_failure;
 640                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 641                                         time))
 642                                 goto nla_put_failure;
 643                         if (nla_put_u32(msg,
 644                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 645                                         chan->dfs_cac_ms))
 646                                 goto nla_put_failure;
 647                 }
 648         }
 649
 650         if (large) {
 651                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 652                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 653                         goto nla_put_failure;
 654                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 655                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 656                         goto nla_put_failure;
 657                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 658                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 659                         goto nla_put_failure;
 660                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 661                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 662                         goto nla_put_failure;
 663                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 664                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 665                         goto nla_put_failure;
 666                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 667                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 668                         goto nla_put_failure;
 669                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 670                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 671                         goto nla_put_failure;
 672                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 673                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 674                         goto nla_put_failure;
 675         }
 676
 677         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 678                         DBM_TO_MBM(chan->max_power)))
 679                 goto nla_put_failure;
 680
 681         return 0;
 682
 683  nla_put_failure:
 684         return -ENOBUFS;
 685 }
 686
 687 /* netlink command implementations */
 688
 689 struct key_parse {
 690         struct key_params p;
 691         int idx;
 692         int type;
 693         bool def, defmgmt;
 694         bool def_uni, def_multi;
 695 };
 696
 697 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 698 {
 699         struct nlattr *tb[NL80211_KEY_MAX + 1];
 700         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 701                                    nl80211_key_policy);
 702         if (err)
 703                 return err;
 704
 705         k->def = !!tb[NL80211_KEY_DEFAULT];
 706         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 707
 708         if (k->def) {
 709                 k->def_uni = true;
 710                 k->def_multi = true;
 711         }
 712         if (k->defmgmt)
 713                 k->def_multi = true;
 714
 715         if (tb[NL80211_KEY_IDX])
 716                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 717
 718         if (tb[NL80211_KEY_DATA]) {
 719                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 720                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 721         }
 722
 723         if (tb[NL80211_KEY_SEQ]) {
 724                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 725                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 726         }
 727
 728         if (tb[NL80211_KEY_CIPHER])
 729                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 730
 731         if (tb[NL80211_KEY_TYPE]) {
 732                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 733                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 734                         return -EINVAL;
 735         }
 736
 737         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 738                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 739
 740                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 741                                        tb[NL80211_KEY_DEFAULT_TYPES],
 742                                        nl80211_key_default_policy);
 743                 if (err)
 744                         return err;
 745
 746                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 747                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 748         }
 749
 750         return 0;
 751 }
 752
 753 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 754 {
 755         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 756                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 757                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 758         }
 759
 760         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 761                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 762                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 763         }
 764
 765         if (info->attrs[NL80211_ATTR_KEY_IDX])
 766                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 767
 768         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 769                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 770
 771         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 772         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 773
 774         if (k->def) {
 775                 k->def_uni = true;
 776                 k->def_multi = true;
 777         }
 778         if (k->defmgmt)
 779                 k->def_multi = true;
 780
 781         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 782                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 783                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 784                         return -EINVAL;
 785         }
 786
 787         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 788                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 789                 int err = nla_parse_nested(
 790                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 791                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 792                                 nl80211_key_default_policy);
 793                 if (err)
 794                         return err;
 795
 796                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 797                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 798         }
 799
 800         return 0;
 801 }
 802
 803 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 804 {
 805         int err;
 806
 807         memset(k, 0, sizeof(*k));
 808         k->idx = -1;
 809         k->type = -1;
 810
 811         if (info->attrs[NL80211_ATTR_KEY])
 812                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 813         else
 814                 err = nl80211_parse_key_old(info, k);
 815
 816         if (err)
 817                 return err;
 818
 819         if (k->def && k->defmgmt)
 820                 return -EINVAL;
 821
 822         if (k->defmgmt) {
 823                 if (k->def_uni || !k->def_multi)
 824                         return -EINVAL;
 825         }
 826
 827         if (k->idx != -1) {
 828                 if (k->defmgmt) {
 829                         if (k->idx < 4 || k->idx > 5)
 830                                 return -EINVAL;
 831                 } else if (k->def) {
 832                         if (k->idx < 0 || k->idx > 3)
 833                                 return -EINVAL;
 834                 } else {
 835                         if (k->idx < 0 || k->idx > 5)
 836                                 return -EINVAL;
 837                 }
 838         }
 839
 840         return 0;
 841 }
 842
 843 static struct cfg80211_cached_keys *
 844 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 845                        struct nlattr *keys, bool *no_ht)
 846 {
 847         struct key_parse parse;
 848         struct nlattr *key;
 849         struct cfg80211_cached_keys *result;
 850         int rem, err, def = 0;
 851         bool have_key = false;
 852
 853         nla_for_each_nested(key, keys, rem) {
 854                 have_key = true;
 855                 break;
 856         }
 857
 858         if (!have_key)
 859                 return NULL;
 860
 861         result = kzalloc(sizeof(*result), GFP_KERNEL);
 862         if (!result)
 863                 return ERR_PTR(-ENOMEM);
 864
 865         result->def = -1;
 866
 867         nla_for_each_nested(key, keys, rem) {
 868                 memset(&parse, 0, sizeof(parse));
 869                 parse.idx = -1;
 870
 871                 err = nl80211_parse_key_new(key, &parse);
 872                 if (err)
 873                         goto error;
 874                 err = -EINVAL;
 875                 if (!parse.p.key)
 876                         goto error;
 877                 if (parse.idx < 0 || parse.idx > 3)
 878                         goto error;
 879                 if (parse.def) {
 880                         if (def)
 881                                 goto error;
 882                         def = 1;
 883                         result->def = parse.idx;
 884                         if (!parse.def_uni || !parse.def_multi)
 885                                 goto error;
 886                 } else if (parse.defmgmt)
 887                         goto error;
 888                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 889                                                      parse.idx, false, NULL);
 890                 if (err)
 891                         goto error;
 892                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 893                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
 894                         err = -EINVAL;
 895                         goto error;
 896                 }
 897                 result->params[parse.idx].cipher = parse.p.cipher;
 898                 result->params[parse.idx].key_len = parse.p.key_len;
 899                 result->params[parse.idx].key = result->data[parse.idx];
 900                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 901
 902                 /* must be WEP key if we got here */
 903                 if (no_ht)
 904                         *no_ht = true;
 905         }
 906
 907         if (result->def < 0) {
 908                 err = -EINVAL;
 909                 goto error;
 910         }
 911
 912         return result;
 913  error:
 914         kfree(result);
 915         return ERR_PTR(err);
 916 }
 917
 918 static int nl80211_key_allowed(struct wireless_dev *wdev)
 919 {
 920         ASSERT_WDEV_LOCK(wdev);
 921
 922         switch (wdev->iftype) {
 923         case NL80211_IFTYPE_AP:
 924         case NL80211_IFTYPE_AP_VLAN:
 925         case NL80211_IFTYPE_P2P_GO:
 926         case NL80211_IFTYPE_MESH_POINT:
 927                 break;
 928         case NL80211_IFTYPE_ADHOC:
 929         case NL80211_IFTYPE_STATION:
 930         case NL80211_IFTYPE_P2P_CLIENT:
 931                 if (!wdev->current_bss)
 932                         return -ENOLINK;
 933                 break;
 934         case NL80211_IFTYPE_UNSPECIFIED:
 935         case NL80211_IFTYPE_OCB:
 936         case NL80211_IFTYPE_MONITOR:
 937         case NL80211_IFTYPE_P2P_DEVICE:
 938         case NL80211_IFTYPE_WDS:
 939         case NUM_NL80211_IFTYPES:
 940                 return -EINVAL;
 941         }
 942
 943         return 0;
 944 }
 945
 946 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 947                                                         struct nlattr *tb)
 948 {
 949         struct ieee80211_channel *chan;
 950
 951         if (tb == NULL)
 952                 return NULL;
 953         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 954         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 955                 return NULL;
 956         return chan;
 957 }
 958
 959 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 960 {
 961         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 962         int i;
 963
 964         if (!nl_modes)
 965                 goto nla_put_failure;
 966
 967         i = 0;
 968         while (ifmodes) {
 969                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 970                         goto nla_put_failure;
 971                 ifmodes >>= 1;
 972                 i++;
 973         }
 974
 975         nla_nest_end(msg, nl_modes);
 976         return 0;
 977
 978 nla_put_failure:
 979         return -ENOBUFS;
 980 }
 981
 982 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 983                                           struct sk_buff *msg,
 984                                           bool large)
 985 {
 986         struct nlattr *nl_combis;
 987         int i, j;
 988
 989         nl_combis = nla_nest_start(msg,
 990                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 991         if (!nl_combis)
 992                 goto nla_put_failure;
 993
 994         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 995                 const struct ieee80211_iface_combination *c;
 996                 struct nlattr *nl_combi, *nl_limits;
 997
 998                 c = &wiphy->iface_combinations[i];
 999
1000                 nl_combi = nla_nest_start(msg, i + 1);
1001                 if (!nl_combi)
1002                         goto nla_put_failure;
1003
1004                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1005                 if (!nl_limits)
1006                         goto nla_put_failure;
1007
1008                 for (j = 0; j < c->n_limits; j++) {
1009                         struct nlattr *nl_limit;
1010
1011                         nl_limit = nla_nest_start(msg, j + 1);
1012                         if (!nl_limit)
1013                                 goto nla_put_failure;
1014                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1015                                         c->limits[j].max))
1016                                 goto nla_put_failure;
1017                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1018                                                 c->limits[j].types))
1019                                 goto nla_put_failure;
1020                         nla_nest_end(msg, nl_limit);
1021                 }
1022
1023                 nla_nest_end(msg, nl_limits);
1024
1025                 if (c->beacon_int_infra_match &&
1026                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1027                         goto nla_put_failure;
1028                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1029                                 c->num_different_channels) ||
1030                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1031                                 c->max_interfaces))
1032                         goto nla_put_failure;
1033                 if (large &&
1034                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1035                                 c->radar_detect_widths) ||
1036                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1037                                 c->radar_detect_regions)))
1038                         goto nla_put_failure;
1039
1040                 nla_nest_end(msg, nl_combi);
1041         }
1042
1043         nla_nest_end(msg, nl_combis);
1044
1045         return 0;
1046 nla_put_failure:
1047         return -ENOBUFS;
1048 }
1049
1050 #ifdef CONFIG_PM
1051 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1052                                         struct sk_buff *msg)
1053 {
1054         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1055         struct nlattr *nl_tcp;
1056
1057         if (!tcp)
1058                 return 0;
1059
1060         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1061         if (!nl_tcp)
1062                 return -ENOBUFS;
1063
1064         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1065                         tcp->data_payload_max))
1066                 return -ENOBUFS;
1067
1068         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1069                         tcp->data_payload_max))
1070                 return -ENOBUFS;
1071
1072         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1073                 return -ENOBUFS;
1074
1075         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1076                                 sizeof(*tcp->tok), tcp->tok))
1077                 return -ENOBUFS;
1078
1079         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1080                         tcp->data_interval_max))
1081                 return -ENOBUFS;
1082
1083         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1084                         tcp->wake_payload_max))
1085                 return -ENOBUFS;
1086
1087         nla_nest_end(msg, nl_tcp);
1088         return 0;
1089 }
1090
1091 static int nl80211_send_wowlan(struct sk_buff *msg,
1092                                struct cfg80211_registered_device *rdev,
1093                                bool large)
1094 {
1095         struct nlattr *nl_wowlan;
1096
1097         if (!rdev->wiphy.wowlan)
1098                 return 0;
1099
1100         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1101         if (!nl_wowlan)
1102                 return -ENOBUFS;
1103
1104         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1105              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1106             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1107              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1108             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1109              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1110             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1111              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1112             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1113              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1114             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1115              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1116             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1117              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1118             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1119              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1120                 return -ENOBUFS;
1121
1122         if (rdev->wiphy.wowlan->n_patterns) {
1123                 struct nl80211_pattern_support pat = {
1124                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1125                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1126                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1127                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1128                 };
1129
1130                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1131                             sizeof(pat), &pat))
1132                         return -ENOBUFS;
1133         }
1134
1135         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1136             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1137                         rdev->wiphy.wowlan->max_nd_match_sets))
1138                 return -ENOBUFS;
1139
1140         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1141                 return -ENOBUFS;
1142
1143         nla_nest_end(msg, nl_wowlan);
1144
1145         return 0;
1146 }
1147 #endif
1148
1149 static int nl80211_send_coalesce(struct sk_buff *msg,
1150                                  struct cfg80211_registered_device *rdev)
1151 {
1152         struct nl80211_coalesce_rule_support rule;
1153
1154         if (!rdev->wiphy.coalesce)
1155                 return 0;
1156
1157         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1158         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1159         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1160         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1161         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1162         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1163
1164         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1165                 return -ENOBUFS;
1166
1167         return 0;
1168 }
1169
1170 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1171                                       struct ieee80211_supported_band *sband)
1172 {
1173         struct nlattr *nl_rates, *nl_rate;
1174         struct ieee80211_rate *rate;
1175         int i;
1176
1177         /* add HT info */
1178         if (sband->ht_cap.ht_supported &&
1179             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1180                      sizeof(sband->ht_cap.mcs),
1181                      &sband->ht_cap.mcs) ||
1182              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1183                          sband->ht_cap.cap) ||
1184              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1185                         sband->ht_cap.ampdu_factor) ||
1186              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1187                         sband->ht_cap.ampdu_density)))
1188                 return -ENOBUFS;
1189
1190         /* add VHT info */
1191         if (sband->vht_cap.vht_supported &&
1192             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1193                      sizeof(sband->vht_cap.vht_mcs),
1194                      &sband->vht_cap.vht_mcs) ||
1195              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1196                          sband->vht_cap.cap)))
1197                 return -ENOBUFS;
1198
1199         /* add bitrates */
1200         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1201         if (!nl_rates)
1202                 return -ENOBUFS;
1203
1204         for (i = 0; i < sband->n_bitrates; i++) {
1205                 nl_rate = nla_nest_start(msg, i);
1206                 if (!nl_rate)
1207                         return -ENOBUFS;
1208
1209                 rate = &sband->bitrates[i];
1210                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1211                                 rate->bitrate))
1212                         return -ENOBUFS;
1213                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1214                     nla_put_flag(msg,
1215                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1216                         return -ENOBUFS;
1217
1218                 nla_nest_end(msg, nl_rate);
1219         }
1220
1221         nla_nest_end(msg, nl_rates);
1222
1223         return 0;
1224 }
1225
1226 static int
1227 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1228                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1229 {
1230         u16 stypes;
1231         struct nlattr *nl_ftypes, *nl_ifs;
1232         enum nl80211_iftype ift;
1233         int i;
1234
1235         if (!mgmt_stypes)
1236                 return 0;
1237
1238         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1239         if (!nl_ifs)
1240                 return -ENOBUFS;
1241
1242         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1243                 nl_ftypes = nla_nest_start(msg, ift);
1244                 if (!nl_ftypes)
1245                         return -ENOBUFS;
1246                 i = 0;
1247                 stypes = mgmt_stypes[ift].tx;
1248                 while (stypes) {
1249                         if ((stypes & 1) &&
1250                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1251                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1252                                 return -ENOBUFS;
1253                         stypes >>= 1;
1254                         i++;
1255                 }
1256                 nla_nest_end(msg, nl_ftypes);
1257         }
1258
1259         nla_nest_end(msg, nl_ifs);
1260
1261         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1262         if (!nl_ifs)
1263                 return -ENOBUFS;
1264
1265         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1266                 nl_ftypes = nla_nest_start(msg, ift);
1267                 if (!nl_ftypes)
1268                         return -ENOBUFS;
1269                 i = 0;
1270                 stypes = mgmt_stypes[ift].rx;
1271                 while (stypes) {
1272                         if ((stypes & 1) &&
1273                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1274                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1275                                 return -ENOBUFS;
1276                         stypes >>= 1;
1277                         i++;
1278                 }
1279                 nla_nest_end(msg, nl_ftypes);
1280         }
1281         nla_nest_end(msg, nl_ifs);
1282
1283         return 0;
1284 }
1285
1286 struct nl80211_dump_wiphy_state {
1287         s64 filter_wiphy;
1288         long start;
1289         long split_start, band_start, chan_start, capa_start;
1290         bool split;
1291 };
1292
1293 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1294                               enum nl80211_commands cmd,
1295                               struct sk_buff *msg, u32 portid, u32 seq,
1296                               int flags, struct nl80211_dump_wiphy_state *state)
1297 {
1298         void *hdr;
1299         struct nlattr *nl_bands, *nl_band;
1300         struct nlattr *nl_freqs, *nl_freq;
1301         struct nlattr *nl_cmds;
1302         enum nl80211_band band;
1303         struct ieee80211_channel *chan;
1304         int i;
1305         const struct ieee80211_txrx_stypes *mgmt_stypes =
1306                                 rdev->wiphy.mgmt_stypes;
1307         u32 features;
1308
1309         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1310         if (!hdr)
1311                 return -ENOBUFS;
1312
1313         if (WARN_ON(!state))
1314                 return -EINVAL;
1315
1316         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1317             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1318                            wiphy_name(&rdev->wiphy)) ||
1319             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1320                         cfg80211_rdev_list_generation))
1321                 goto nla_put_failure;
1322
1323         if (cmd != NL80211_CMD_NEW_WIPHY)
1324                 goto finish;
1325
1326         switch (state->split_start) {
1327         case 0:
1328                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1329                                rdev->wiphy.retry_short) ||
1330                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1331                                rdev->wiphy.retry_long) ||
1332                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1333                                 rdev->wiphy.frag_threshold) ||
1334                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1335                                 rdev->wiphy.rts_threshold) ||
1336                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1337                                rdev->wiphy.coverage_class) ||
1338                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1339                                rdev->wiphy.max_scan_ssids) ||
1340                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1341                                rdev->wiphy.max_sched_scan_ssids) ||
1342                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1343                                 rdev->wiphy.max_scan_ie_len) ||
1344                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1345                                 rdev->wiphy.max_sched_scan_ie_len) ||
1346                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1347                                rdev->wiphy.max_match_sets) ||
1348                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1349                                 rdev->wiphy.max_sched_scan_plans) ||
1350                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1351                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1352                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1353                                 rdev->wiphy.max_sched_scan_plan_iterations))
1354                         goto nla_put_failure;
1355
1356                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1357                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1358                         goto nla_put_failure;
1359                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1360                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1361                         goto nla_put_failure;
1362                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1363                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1364                         goto nla_put_failure;
1365                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1366                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1367                         goto nla_put_failure;
1368                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1369                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1370                         goto nla_put_failure;
1371                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1372                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1373                         goto nla_put_failure;
1374                 state->split_start++;
1375                 if (state->split)
1376                         break;
1377         case 1:
1378                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1379                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1380                             rdev->wiphy.cipher_suites))
1381                         goto nla_put_failure;
1382
1383                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1384                                rdev->wiphy.max_num_pmkids))
1385                         goto nla_put_failure;
1386
1387                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1388                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1389                         goto nla_put_failure;
1390
1391                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1392                                 rdev->wiphy.available_antennas_tx) ||
1393                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1394                                 rdev->wiphy.available_antennas_rx))
1395                         goto nla_put_failure;
1396
1397                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1398                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1399                                 rdev->wiphy.probe_resp_offload))
1400                         goto nla_put_failure;
1401
1402                 if ((rdev->wiphy.available_antennas_tx ||
1403                      rdev->wiphy.available_antennas_rx) &&
1404                     rdev->ops->get_antenna) {
1405                         u32 tx_ant = 0, rx_ant = 0;
1406                         int res;
1407
1408                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1409                         if (!res) {
1410                                 if (nla_put_u32(msg,
1411                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1412                                                 tx_ant) ||
1413                                     nla_put_u32(msg,
1414                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1415                                                 rx_ant))
1416                                         goto nla_put_failure;
1417                         }
1418                 }
1419
1420                 state->split_start++;
1421                 if (state->split)
1422                         break;
1423         case 2:
1424                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1425                                         rdev->wiphy.interface_modes))
1426                                 goto nla_put_failure;
1427                 state->split_start++;
1428                 if (state->split)
1429                         break;
1430         case 3:
1431                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1432                 if (!nl_bands)
1433                         goto nla_put_failure;
1434
1435                 for (band = state->band_start;
1436                      band < NUM_NL80211_BANDS; band++) {
1437                         struct ieee80211_supported_band *sband;
1438
1439                         sband = rdev->wiphy.bands[band];
1440
1441                         if (!sband)
1442                                 continue;
1443
1444                         nl_band = nla_nest_start(msg, band);
1445                         if (!nl_band)
1446                                 goto nla_put_failure;
1447
1448                         switch (state->chan_start) {
1449                         case 0:
1450                                 if (nl80211_send_band_rateinfo(msg, sband))
1451                                         goto nla_put_failure;
1452                                 state->chan_start++;
1453                                 if (state->split)
1454                                         break;
1455                         default:
1456                                 /* add frequencies */
1457                                 nl_freqs = nla_nest_start(
1458                                         msg, NL80211_BAND_ATTR_FREQS);
1459                                 if (!nl_freqs)
1460                                         goto nla_put_failure;
1461
1462                                 for (i = state->chan_start - 1;
1463                                      i < sband->n_channels;
1464                                      i++) {
1465                                         nl_freq = nla_nest_start(msg, i);
1466                                         if (!nl_freq)
1467                                                 goto nla_put_failure;
1468
1469                                         chan = &sband->channels[i];
1470
1471                                         if (nl80211_msg_put_channel(
1472                                                         msg, chan,
1473                                                         state->split))
1474                                                 goto nla_put_failure;
1475
1476                                         nla_nest_end(msg, nl_freq);
1477                                         if (state->split)
1478                                                 break;
1479                                 }
1480                                 if (i < sband->n_channels)
1481                                         state->chan_start = i + 2;
1482                                 else
1483                                         state->chan_start = 0;
1484                                 nla_nest_end(msg, nl_freqs);
1485                         }
1486
1487                         nla_nest_end(msg, nl_band);
1488
1489                         if (state->split) {
1490                                 /* start again here */
1491                                 if (state->chan_start)
1492                                         band--;
1493                                 break;
1494                         }
1495                 }
1496                 nla_nest_end(msg, nl_bands);
1497
1498                 if (band < NUM_NL80211_BANDS)
1499                         state->band_start = band + 1;
1500                 else
1501                         state->band_start = 0;
1502
1503                 /* if bands & channels are done, continue outside */
1504                 if (state->band_start == 0 && state->chan_start == 0)
1505                         state->split_start++;
1506                 if (state->split)
1507                         break;
1508         case 4:
1509                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1510                 if (!nl_cmds)
1511                         goto nla_put_failure;
1512
1513                 i = 0;
1514 #define CMD(op, n)                                                      \
1515                  do {                                                   \
1516                         if (rdev->ops->op) {                            \
1517                                 i++;                                    \
1518                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1519                                         goto nla_put_failure;           \
1520                         }                                               \
1521                 } while (0)
1522
1523                 CMD(add_virtual_intf, NEW_INTERFACE);
1524                 CMD(change_virtual_intf, SET_INTERFACE);
1525                 CMD(add_key, NEW_KEY);
1526                 CMD(start_ap, START_AP);
1527                 CMD(add_station, NEW_STATION);
1528                 CMD(add_mpath, NEW_MPATH);
1529                 CMD(update_mesh_config, SET_MESH_CONFIG);
1530                 CMD(change_bss, SET_BSS);
1531                 CMD(auth, AUTHENTICATE);
1532                 CMD(assoc, ASSOCIATE);
1533                 CMD(deauth, DEAUTHENTICATE);
1534                 CMD(disassoc, DISASSOCIATE);
1535                 CMD(join_ibss, JOIN_IBSS);
1536                 CMD(join_mesh, JOIN_MESH);
1537                 CMD(set_pmksa, SET_PMKSA);
1538                 CMD(del_pmksa, DEL_PMKSA);
1539                 CMD(flush_pmksa, FLUSH_PMKSA);
1540                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1541                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1542                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1543                 CMD(mgmt_tx, FRAME);
1544                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1545                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1546                         i++;
1547                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1548                                 goto nla_put_failure;
1549                 }
1550                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1551                     rdev->ops->join_mesh) {
1552                         i++;
1553                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1554                                 goto nla_put_failure;
1555                 }
1556                 CMD(set_wds_peer, SET_WDS_PEER);
1557                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1558                         CMD(tdls_mgmt, TDLS_MGMT);
1559                         CMD(tdls_oper, TDLS_OPER);
1560                 }
1561                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1562                         CMD(sched_scan_start, START_SCHED_SCAN);
1563                 CMD(probe_client, PROBE_CLIENT);
1564                 CMD(set_noack_map, SET_NOACK_MAP);
1565                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1566                         i++;
1567                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1568                                 goto nla_put_failure;
1569                 }
1570                 CMD(start_p2p_device, START_P2P_DEVICE);
1571                 CMD(set_mcast_rate, SET_MCAST_RATE);
1572 #ifdef CONFIG_NL80211_TESTMODE
1573                 CMD(testmode_cmd, TESTMODE);
1574 #endif
1575                 if (state->split) {
1576                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1577                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1578                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1579                                 CMD(channel_switch, CHANNEL_SWITCH);
1580                         CMD(set_qos_map, SET_QOS_MAP);
1581                         if (rdev->wiphy.features &
1582                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1583                                 CMD(add_tx_ts, ADD_TX_TS);
1584                 }
1585                 /* add into the if now */
1586 #undef CMD
1587
1588                 if (rdev->ops->connect || rdev->ops->auth) {
1589                         i++;
1590                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1591                                 goto nla_put_failure;
1592                 }
1593
1594                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1595                         i++;
1596                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1597                                 goto nla_put_failure;
1598                 }
1599
1600                 nla_nest_end(msg, nl_cmds);
1601                 state->split_start++;
1602                 if (state->split)
1603                         break;
1604         case 5:
1605                 if (rdev->ops->remain_on_channel &&
1606                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1607                     nla_put_u32(msg,
1608                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1609                                 rdev->wiphy.max_remain_on_channel_duration))
1610                         goto nla_put_failure;
1611
1612                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1613                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1614                         goto nla_put_failure;
1615
1616                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1617                         goto nla_put_failure;
1618                 state->split_start++;
1619                 if (state->split)
1620                         break;
1621         case 6:
1622 #ifdef CONFIG_PM
1623                 if (nl80211_send_wowlan(msg, rdev, state->split))
1624                         goto nla_put_failure;
1625                 state->split_start++;
1626                 if (state->split)
1627                         break;
1628 #else
1629                 state->split_start++;
1630 #endif
1631         case 7:
1632                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1633                                         rdev->wiphy.software_iftypes))
1634                         goto nla_put_failure;
1635
1636                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1637                                                    state->split))
1638                         goto nla_put_failure;
1639
1640                 state->split_start++;
1641                 if (state->split)
1642                         break;
1643         case 8:
1644                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1645                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1646                                 rdev->wiphy.ap_sme_capa))
1647                         goto nla_put_failure;
1648
1649                 features = rdev->wiphy.features;
1650                 /*
1651                  * We can only add the per-channel limit information if the
1652                  * dump is split, otherwise it makes it too big. Therefore
1653                  * only advertise it in that case.
1654                  */
1655                 if (state->split)
1656                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1657                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1658                         goto nla_put_failure;
1659
1660                 if (rdev->wiphy.ht_capa_mod_mask &&
1661                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1662                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1663                             rdev->wiphy.ht_capa_mod_mask))
1664                         goto nla_put_failure;
1665
1666                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1667                     rdev->wiphy.max_acl_mac_addrs &&
1668                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1669                                 rdev->wiphy.max_acl_mac_addrs))
1670                         goto nla_put_failure;
1671
1672                 /*
1673                  * Any information below this point is only available to
1674                  * applications that can deal with it being split. This
1675                  * helps ensure that newly added capabilities don't break
1676                  * older tools by overrunning their buffers.
1677                  *
1678                  * We still increment split_start so that in the split
1679                  * case we'll continue with more data in the next round,
1680                  * but break unconditionally so unsplit data stops here.
1681                  */
1682                 state->split_start++;
1683                 break;
1684         case 9:
1685                 if (rdev->wiphy.extended_capabilities &&
1686                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1687                              rdev->wiphy.extended_capabilities_len,
1688                              rdev->wiphy.extended_capabilities) ||
1689                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1690                              rdev->wiphy.extended_capabilities_len,
1691                              rdev->wiphy.extended_capabilities_mask)))
1692                         goto nla_put_failure;
1693
1694                 if (rdev->wiphy.vht_capa_mod_mask &&
1695                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1696                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1697                             rdev->wiphy.vht_capa_mod_mask))
1698                         goto nla_put_failure;
1699
1700                 state->split_start++;
1701                 break;
1702         case 10:
1703                 if (nl80211_send_coalesce(msg, rdev))
1704                         goto nla_put_failure;
1705
1706                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1707                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1708                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1709                         goto nla_put_failure;
1710
1711                 if (rdev->wiphy.max_ap_assoc_sta &&
1712                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1713                                 rdev->wiphy.max_ap_assoc_sta))
1714                         goto nla_put_failure;
1715
1716                 state->split_start++;
1717                 break;
1718         case 11:
1719                 if (rdev->wiphy.n_vendor_commands) {
1720                         const struct nl80211_vendor_cmd_info *info;
1721                         struct nlattr *nested;
1722
1723                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1724                         if (!nested)
1725                                 goto nla_put_failure;
1726
1727                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1728                                 info = &rdev->wiphy.vendor_commands[i].info;
1729                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1730                                         goto nla_put_failure;
1731                         }
1732                         nla_nest_end(msg, nested);
1733                 }
1734
1735                 if (rdev->wiphy.n_vendor_events) {
1736                         const struct nl80211_vendor_cmd_info *info;
1737                         struct nlattr *nested;
1738
1739                         nested = nla_nest_start(msg,
1740                                                 NL80211_ATTR_VENDOR_EVENTS);
1741                         if (!nested)
1742                                 goto nla_put_failure;
1743
1744                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1745                                 info = &rdev->wiphy.vendor_events[i];
1746                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1747                                         goto nla_put_failure;
1748                         }
1749                         nla_nest_end(msg, nested);
1750                 }
1751                 state->split_start++;
1752                 break;
1753         case 12:
1754                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1755                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1756                                rdev->wiphy.max_num_csa_counters))
1757                         goto nla_put_failure;
1758
1759                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1760                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1761                         goto nla_put_failure;
1762
1763                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1764                             sizeof(rdev->wiphy.ext_features),
1765                             rdev->wiphy.ext_features))
1766                         goto nla_put_failure;
1767
1768                 if (rdev->wiphy.bss_select_support) {
1769                         struct nlattr *nested;
1770                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1771
1772                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1773                         if (!nested)
1774                                 goto nla_put_failure;
1775
1776                         i = 0;
1777                         while (bss_select_support) {
1778                                 if ((bss_select_support & 1) &&
1779                                     nla_put_flag(msg, i))
1780                                         goto nla_put_failure;
1781                                 i++;
1782                                 bss_select_support >>= 1;
1783                         }
1784                         nla_nest_end(msg, nested);
1785                 }
1786
1787                 state->split_start++;
1788                 break;
1789         case 13:
1790                 if (rdev->wiphy.num_iftype_ext_capab &&
1791                     rdev->wiphy.iftype_ext_capab) {
1792                         struct nlattr *nested_ext_capab, *nested;
1793
1794                         nested = nla_nest_start(msg,
1795                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1796                         if (!nested)
1797                                 goto nla_put_failure;
1798
1799                         for (i = state->capa_start;
1800                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1801                                 const struct wiphy_iftype_ext_capab *capab;
1802
1803                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1804
1805                                 nested_ext_capab = nla_nest_start(msg, i);
1806                                 if (!nested_ext_capab ||
1807                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1808                                                 capab->iftype) ||
1809                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1810                                             capab->extended_capabilities_len,
1811                                             capab->extended_capabilities) ||
1812                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1813                                             capab->extended_capabilities_len,
1814                                             capab->extended_capabilities_mask))
1815                                         goto nla_put_failure;
1816
1817                                 nla_nest_end(msg, nested_ext_capab);
1818                                 if (state->split)
1819                                         break;
1820                         }
1821                         nla_nest_end(msg, nested);
1822                         if (i < rdev->wiphy.num_iftype_ext_capab) {
1823                                 state->capa_start = i + 1;
1824                                 break;
1825                         }
1826                 }
1827
1828                 /* done */
1829                 state->split_start = 0;
1830                 break;
1831         }
1832  finish:
1833         genlmsg_end(msg, hdr);
1834         return 0;
1835
1836  nla_put_failure:
1837         genlmsg_cancel(msg, hdr);
1838         return -EMSGSIZE;
1839 }
1840
1841 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1842                                     struct netlink_callback *cb,
1843                                     struct nl80211_dump_wiphy_state *state)
1844 {
1845         struct nlattr **tb = nl80211_fam.attrbuf;
1846         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1847                               tb, nl80211_fam.maxattr, nl80211_policy);
1848         /* ignore parse errors for backward compatibility */
1849         if (ret)
1850                 return 0;
1851
1852         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1853         if (tb[NL80211_ATTR_WIPHY])
1854                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1855         if (tb[NL80211_ATTR_WDEV])
1856                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1857         if (tb[NL80211_ATTR_IFINDEX]) {
1858                 struct net_device *netdev;
1859                 struct cfg80211_registered_device *rdev;
1860                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1861
1862                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1863                 if (!netdev)
1864                         return -ENODEV;
1865                 if (netdev->ieee80211_ptr) {
1866                         rdev = wiphy_to_rdev(
1867                                 netdev->ieee80211_ptr->wiphy);
1868                         state->filter_wiphy = rdev->wiphy_idx;
1869                 }
1870         }
1871
1872         return 0;
1873 }
1874
1875 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1876 {
1877         int idx = 0, ret;
1878         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1879         struct cfg80211_registered_device *rdev;
1880
1881         rtnl_lock();
1882         if (!state) {
1883                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1884                 if (!state) {
1885                         rtnl_unlock();
1886                         return -ENOMEM;
1887                 }
1888                 state->filter_wiphy = -1;
1889                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1890                 if (ret) {
1891                         kfree(state);
1892                         rtnl_unlock();
1893                         return ret;
1894                 }
1895                 cb->args[0] = (long)state;
1896         }
1897
1898         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1899                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1900                         continue;
1901                 if (++idx <= state->start)
1902                         continue;
1903                 if (state->filter_wiphy != -1 &&
1904                     state->filter_wiphy != rdev->wiphy_idx)
1905                         continue;
1906                 /* attempt to fit multiple wiphy data chunks into the skb */
1907                 do {
1908                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1909                                                  skb,
1910                                                  NETLINK_CB(cb->skb).portid,
1911                                                  cb->nlh->nlmsg_seq,
1912                                                  NLM_F_MULTI, state);
1913                         if (ret < 0) {
1914                                 /*
1915                                  * If sending the wiphy data didn't fit (ENOBUFS
1916                                  * or EMSGSIZE returned), this SKB is still
1917                                  * empty (so it's not too big because another
1918                                  * wiphy dataset is already in the skb) and
1919                                  * we've not tried to adjust the dump allocation
1920                                  * yet ... then adjust the alloc size to be
1921                                  * bigger, and return 1 but with the empty skb.
1922                                  * This results in an empty message being RX'ed
1923                                  * in userspace, but that is ignored.
1924                                  *
1925                                  * We can then retry with the larger buffer.
1926                                  */
1927                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1928                                     !skb->len && !state->split &&
1929                                     cb->min_dump_alloc < 4096) {
1930                                         cb->min_dump_alloc = 4096;
1931                                         state->split_start = 0;
1932                                         rtnl_unlock();
1933                                         return 1;
1934                                 }
1935                                 idx--;
1936                                 break;
1937                         }
1938                 } while (state->split_start > 0);
1939                 break;
1940         }
1941         rtnl_unlock();
1942
1943         state->start = idx;
1944
1945         return skb->len;
1946 }
1947
1948 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1949 {
1950         kfree((void *)cb->args[0]);
1951         return 0;
1952 }
1953
1954 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1955 {
1956         struct sk_buff *msg;
1957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1958         struct nl80211_dump_wiphy_state state = {};
1959
1960         msg = nlmsg_new(4096, GFP_KERNEL);
1961         if (!msg)
1962                 return -ENOMEM;
1963
1964         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1965                                info->snd_portid, info->snd_seq, 0,
1966                                &state) < 0) {
1967                 nlmsg_free(msg);
1968                 return -ENOBUFS;
1969         }
1970
1971         return genlmsg_reply(msg, info);
1972 }
1973
1974 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1975         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1976         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1977         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1978         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1979         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1980 };
1981
1982 static int parse_txq_params(struct nlattr *tb[],
1983                             struct ieee80211_txq_params *txq_params)
1984 {
1985         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1986             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1987             !tb[NL80211_TXQ_ATTR_AIFS])
1988                 return -EINVAL;
1989
1990         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1991         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1992         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1993         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1994         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1995
1996         if (txq_params->ac >= NL80211_NUM_ACS)
1997                 return -EINVAL;
1998
1999         return 0;
2000 }
2001
2002 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2003 {
2004         /*
2005          * You can only set the channel explicitly for WDS interfaces,
2006          * all others have their channel managed via their respective
2007          * "establish a connection" command (connect, join, ...)
2008          *
2009          * For AP/GO and mesh mode, the channel can be set with the
2010          * channel userspace API, but is only stored and passed to the
2011          * low-level driver when the AP starts or the mesh is joined.
2012          * This is for backward compatibility, userspace can also give
2013          * the channel in the start-ap or join-mesh commands instead.
2014          *
2015          * Monitors are special as they are normally slaved to
2016          * whatever else is going on, so they have their own special
2017          * operation to set the monitor channel if possible.
2018          */
2019         return !wdev ||
2020                 wdev->iftype == NL80211_IFTYPE_AP ||
2021                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2022                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2023                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2024 }
2025
2026 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2027                                  struct genl_info *info,
2028                                  struct cfg80211_chan_def *chandef)
2029 {
2030         u32 control_freq;
2031
2032         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2033                 return -EINVAL;
2034
2035         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2036
2037         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2038         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2039         chandef->center_freq1 = control_freq;
2040         chandef->center_freq2 = 0;
2041
2042         /* Primary channel not allowed */
2043         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2044                 return -EINVAL;
2045
2046         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2047                 enum nl80211_channel_type chantype;
2048
2049                 chantype = nla_get_u32(
2050                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2051
2052                 switch (chantype) {
2053                 case NL80211_CHAN_NO_HT:
2054                 case NL80211_CHAN_HT20:
2055                 case NL80211_CHAN_HT40PLUS:
2056                 case NL80211_CHAN_HT40MINUS:
2057                         cfg80211_chandef_create(chandef, chandef->chan,
2058                                                 chantype);
2059                         break;
2060                 default:
2061                         return -EINVAL;
2062                 }
2063         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2064                 chandef->width =
2065                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2066                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2067                         chandef->center_freq1 =
2068                                 nla_get_u32(
2069                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2070                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2071                         chandef->center_freq2 =
2072                                 nla_get_u32(
2073                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2074         }
2075
2076         if (!cfg80211_chandef_valid(chandef))
2077                 return -EINVAL;
2078
2079         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2080                                      IEEE80211_CHAN_DISABLED))
2081                 return -EINVAL;
2082
2083         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2084              chandef->width == NL80211_CHAN_WIDTH_10) &&
2085             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2086                 return -EINVAL;
2087
2088         return 0;
2089 }
2090
2091 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2092                                  struct net_device *dev,
2093                                  struct genl_info *info)
2094 {
2095         struct cfg80211_chan_def chandef;
2096         int result;
2097         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2098         struct wireless_dev *wdev = NULL;
2099
2100         if (dev)
2101                 wdev = dev->ieee80211_ptr;
2102         if (!nl80211_can_set_dev_channel(wdev))
2103                 return -EOPNOTSUPP;
2104         if (wdev)
2105                 iftype = wdev->iftype;
2106
2107         result = nl80211_parse_chandef(rdev, info, &chandef);
2108         if (result)
2109                 return result;
2110
2111         switch (iftype) {
2112         case NL80211_IFTYPE_AP:
2113         case NL80211_IFTYPE_P2P_GO:
2114                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2115                                                    iftype)) {
2116                         result = -EINVAL;
2117                         break;
2118                 }
2119                 if (wdev->beacon_interval) {
2120                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2121                             !(rdev->wiphy.features &
2122                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2123                                 result = -EBUSY;
2124                                 break;
2125                         }
2126
2127                         /* Only allow dynamic channel width changes */
2128                         if (chandef.chan != wdev->preset_chandef.chan) {
2129                                 result = -EBUSY;
2130                                 break;
2131                         }
2132                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2133                         if (result)
2134                                 break;
2135                 }
2136                 wdev->preset_chandef = chandef;
2137                 result = 0;
2138                 break;
2139         case NL80211_IFTYPE_MESH_POINT:
2140                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2141                 break;
2142         case NL80211_IFTYPE_MONITOR:
2143                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2144                 break;
2145         default:
2146                 result = -EINVAL;
2147         }
2148
2149         return result;
2150 }
2151
2152 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2153 {
2154         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2155         struct net_device *netdev = info->user_ptr[1];
2156
2157         return __nl80211_set_channel(rdev, netdev, info);
2158 }
2159
2160 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2161 {
2162         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2163         struct net_device *dev = info->user_ptr[1];
2164         struct wireless_dev *wdev = dev->ieee80211_ptr;
2165         const u8 *bssid;
2166
2167         if (!info->attrs[NL80211_ATTR_MAC])
2168                 return -EINVAL;
2169
2170         if (netif_running(dev))
2171                 return -EBUSY;
2172
2173         if (!rdev->ops->set_wds_peer)
2174                 return -EOPNOTSUPP;
2175
2176         if (wdev->iftype != NL80211_IFTYPE_WDS)
2177                 return -EOPNOTSUPP;
2178
2179         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2180         return rdev_set_wds_peer(rdev, dev, bssid);
2181 }
2182
2183 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2184 {
2185         struct cfg80211_registered_device *rdev;
2186         struct net_device *netdev = NULL;
2187         struct wireless_dev *wdev;
2188         int result = 0, rem_txq_params = 0;
2189         struct nlattr *nl_txq_params;
2190         u32 changed;
2191         u8 retry_short = 0, retry_long = 0;
2192         u32 frag_threshold = 0, rts_threshold = 0;
2193         u8 coverage_class = 0;
2194
2195         ASSERT_RTNL();
2196
2197         /*
2198          * Try to find the wiphy and netdev. Normally this
2199          * function shouldn't need the netdev, but this is
2200          * done for backward compatibility -- previously
2201          * setting the channel was done per wiphy, but now
2202          * it is per netdev. Previous userland like hostapd
2203          * also passed a netdev to set_wiphy, so that it is
2204          * possible to let that go to the right netdev!
2205          */
2206
2207         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2208                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2209
2210                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2211                 if (netdev && netdev->ieee80211_ptr)
2212                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2213                 else
2214                         netdev = NULL;
2215         }
2216
2217         if (!netdev) {
2218                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2219                                                   info->attrs);
2220                 if (IS_ERR(rdev))
2221                         return PTR_ERR(rdev);
2222                 wdev = NULL;
2223                 netdev = NULL;
2224                 result = 0;
2225         } else
2226                 wdev = netdev->ieee80211_ptr;
2227
2228         /*
2229          * end workaround code, by now the rdev is available
2230          * and locked, and wdev may or may not be NULL.
2231          */
2232
2233         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2234                 result = cfg80211_dev_rename(
2235                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2236
2237         if (result)
2238                 return result;
2239
2240         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2241                 struct ieee80211_txq_params txq_params;
2242                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2243
2244                 if (!rdev->ops->set_txq_params)
2245                         return -EOPNOTSUPP;
2246
2247                 if (!netdev)
2248                         return -EINVAL;
2249
2250                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2251                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2252                         return -EINVAL;
2253
2254                 if (!netif_running(netdev))
2255                         return -ENETDOWN;
2256
2257                 nla_for_each_nested(nl_txq_params,
2258                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2259                                     rem_txq_params) {
2260                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2261                                            nla_data(nl_txq_params),
2262                                            nla_len(nl_txq_params),
2263                                            txq_params_policy);
2264                         if (result)
2265                                 return result;
2266                         result = parse_txq_params(tb, &txq_params);
2267                         if (result)
2268                                 return result;
2269
2270                         result = rdev_set_txq_params(rdev, netdev,
2271                                                      &txq_params);
2272                         if (result)
2273                                 return result;
2274                 }
2275         }
2276
2277         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2278                 result = __nl80211_set_channel(
2279                         rdev,
2280                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2281                         info);
2282                 if (result)
2283                         return result;
2284         }
2285
2286         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2287                 struct wireless_dev *txp_wdev = wdev;
2288                 enum nl80211_tx_power_setting type;
2289                 int idx, mbm = 0;
2290
2291                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2292                         txp_wdev = NULL;
2293
2294                 if (!rdev->ops->set_tx_power)
2295                         return -EOPNOTSUPP;
2296
2297                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2298                 type = nla_get_u32(info->attrs[idx]);
2299
2300                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2301                     (type != NL80211_TX_POWER_AUTOMATIC))
2302                         return -EINVAL;
2303
2304                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2305                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2306                         mbm = nla_get_u32(info->attrs[idx]);
2307                 }
2308
2309                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2310                 if (result)
2311                         return result;
2312         }
2313
2314         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2315             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2316                 u32 tx_ant, rx_ant;
2317
2318                 if ((!rdev->wiphy.available_antennas_tx &&
2319                      !rdev->wiphy.available_antennas_rx) ||
2320                     !rdev->ops->set_antenna)
2321                         return -EOPNOTSUPP;
2322
2323                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2324                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2325
2326                 /* reject antenna configurations which don't match the
2327                  * available antenna masks, except for the "all" mask */
2328                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2329                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2330                         return -EINVAL;
2331
2332                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2333                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2334
2335                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2336                 if (result)
2337                         return result;
2338         }
2339
2340         changed = 0;
2341
2342         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2343                 retry_short = nla_get_u8(
2344                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2345                 if (retry_short == 0)
2346                         return -EINVAL;
2347
2348                 changed |= WIPHY_PARAM_RETRY_SHORT;
2349         }
2350
2351         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2352                 retry_long = nla_get_u8(
2353                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2354                 if (retry_long == 0)
2355                         return -EINVAL;
2356
2357                 changed |= WIPHY_PARAM_RETRY_LONG;
2358         }
2359
2360         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2361                 frag_threshold = nla_get_u32(
2362                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2363                 if (frag_threshold < 256)
2364                         return -EINVAL;
2365
2366                 if (frag_threshold != (u32) -1) {
2367                         /*
2368                          * Fragments (apart from the last one) are required to
2369                          * have even length. Make the fragmentation code
2370                          * simpler by stripping LSB should someone try to use
2371                          * odd threshold value.
2372                          */
2373                         frag_threshold &= ~0x1;
2374                 }
2375                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2376         }
2377
2378         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2379                 rts_threshold = nla_get_u32(
2380                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2381                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2382         }
2383
2384         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2385                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2386                         return -EINVAL;
2387
2388                 coverage_class = nla_get_u8(
2389                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2390                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2391         }
2392
2393         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2394                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2395                         return -EOPNOTSUPP;
2396
2397                 changed |= WIPHY_PARAM_DYN_ACK;
2398         }
2399
2400         if (changed) {
2401                 u8 old_retry_short, old_retry_long;
2402                 u32 old_frag_threshold, old_rts_threshold;
2403                 u8 old_coverage_class;
2404
2405                 if (!rdev->ops->set_wiphy_params)
2406                         return -EOPNOTSUPP;
2407
2408                 old_retry_short = rdev->wiphy.retry_short;
2409                 old_retry_long = rdev->wiphy.retry_long;
2410                 old_frag_threshold = rdev->wiphy.frag_threshold;
2411                 old_rts_threshold = rdev->wiphy.rts_threshold;
2412                 old_coverage_class = rdev->wiphy.coverage_class;
2413
2414                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2415                         rdev->wiphy.retry_short = retry_short;
2416                 if (changed & WIPHY_PARAM_RETRY_LONG)
2417                         rdev->wiphy.retry_long = retry_long;
2418                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2419                         rdev->wiphy.frag_threshold = frag_threshold;
2420                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2421                         rdev->wiphy.rts_threshold = rts_threshold;
2422                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2423                         rdev->wiphy.coverage_class = coverage_class;
2424
2425                 result = rdev_set_wiphy_params(rdev, changed);
2426                 if (result) {
2427                         rdev->wiphy.retry_short = old_retry_short;
2428                         rdev->wiphy.retry_long = old_retry_long;
2429                         rdev->wiphy.frag_threshold = old_frag_threshold;
2430                         rdev->wiphy.rts_threshold = old_rts_threshold;
2431                         rdev->wiphy.coverage_class = old_coverage_class;
2432                         return result;
2433                 }
2434         }
2435         return 0;
2436 }
2437
2438 static inline u64 wdev_id(struct wireless_dev *wdev)
2439 {
2440         return (u64)wdev->identifier |
2441                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2442 }
2443
2444 static int nl80211_send_chandef(struct sk_buff *msg,
2445                                 const struct cfg80211_chan_def *chandef)
2446 {
2447         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2448                 return -EINVAL;
2449
2450         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2451                         chandef->chan->center_freq))
2452                 return -ENOBUFS;
2453         switch (chandef->width) {
2454         case NL80211_CHAN_WIDTH_20_NOHT:
2455         case NL80211_CHAN_WIDTH_20:
2456         case NL80211_CHAN_WIDTH_40:
2457                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2458                                 cfg80211_get_chandef_type(chandef)))
2459                         return -ENOBUFS;
2460                 break;
2461         default:
2462                 break;
2463         }
2464         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2465                 return -ENOBUFS;
2466         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2467                 return -ENOBUFS;
2468         if (chandef->center_freq2 &&
2469             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2470                 return -ENOBUFS;
2471         return 0;
2472 }
2473
2474 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2475                               struct cfg80211_registered_device *rdev,
2476                               struct wireless_dev *wdev, bool removal)
2477 {
2478         struct net_device *dev = wdev->netdev;
2479         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2480         void *hdr;
2481
2482         if (removal)
2483                 cmd = NL80211_CMD_DEL_INTERFACE;
2484
2485         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2486         if (!hdr)
2487                 return -1;
2488
2489         if (dev &&
2490             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2491              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2492                 goto nla_put_failure;
2493
2494         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2495             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2496             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2497                               NL80211_ATTR_PAD) ||
2498             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2499             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2500                         rdev->devlist_generation ^
2501                         (cfg80211_rdev_list_generation << 2)))
2502                 goto nla_put_failure;
2503
2504         if (rdev->ops->get_channel) {
2505                 int ret;
2506                 struct cfg80211_chan_def chandef;
2507
2508                 ret = rdev_get_channel(rdev, wdev, &chandef);
2509                 if (ret == 0) {
2510                         if (nl80211_send_chandef(msg, &chandef))
2511                                 goto nla_put_failure;
2512                 }
2513         }
2514
2515         if (rdev->ops->get_tx_power) {
2516                 int dbm, ret;
2517
2518                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2519                 if (ret == 0 &&
2520                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2521                                 DBM_TO_MBM(dbm)))
2522                         goto nla_put_failure;
2523         }
2524
2525         if (wdev->ssid_len) {
2526                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2527                         goto nla_put_failure;
2528         }
2529
2530         genlmsg_end(msg, hdr);
2531         return 0;
2532
2533  nla_put_failure:
2534         genlmsg_cancel(msg, hdr);
2535         return -EMSGSIZE;
2536 }
2537
2538 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2539 {
2540         int wp_idx = 0;
2541         int if_idx = 0;
2542         int wp_start = cb->args[0];
2543         int if_start = cb->args[1];
2544         int filter_wiphy = -1;
2545         struct cfg80211_registered_device *rdev;
2546         struct wireless_dev *wdev;
2547
2548         rtnl_lock();
2549         if (!cb->args[2]) {
2550                 struct nl80211_dump_wiphy_state state = {
2551                         .filter_wiphy = -1,
2552                 };
2553                 int ret;
2554
2555                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2556                 if (ret)
2557                         return ret;
2558
2559                 filter_wiphy = state.filter_wiphy;
2560
2561                 /*
2562                  * if filtering, set cb->args[2] to +1 since 0 is the default
2563                  * value needed to determine that parsing is necessary.
2564                  */
2565                 if (filter_wiphy >= 0)
2566                         cb->args[2] = filter_wiphy + 1;
2567                 else
2568                         cb->args[2] = -1;
2569         } else if (cb->args[2] > 0) {
2570                 filter_wiphy = cb->args[2] - 1;
2571         }
2572
2573         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2574                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2575                         continue;
2576                 if (wp_idx < wp_start) {
2577                         wp_idx++;
2578                         continue;
2579                 }
2580
2581                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2582                         continue;
2583
2584                 if_idx = 0;
2585
2586                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2587                         if (if_idx < if_start) {
2588                                 if_idx++;
2589                                 continue;
2590                         }
2591                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2592                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2593                                                rdev, wdev, false) < 0) {
2594                                 goto out;
2595                         }
2596                         if_idx++;
2597                 }
2598
2599                 wp_idx++;
2600         }
2601  out:
2602         rtnl_unlock();
2603
2604         cb->args[0] = wp_idx;
2605         cb->args[1] = if_idx;
2606
2607         return skb->len;
2608 }
2609
2610 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2611 {
2612         struct sk_buff *msg;
2613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2614         struct wireless_dev *wdev = info->user_ptr[1];
2615
2616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2617         if (!msg)
2618                 return -ENOMEM;
2619
2620         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2621                                rdev, wdev, false) < 0) {
2622                 nlmsg_free(msg);
2623                 return -ENOBUFS;
2624         }
2625
2626         return genlmsg_reply(msg, info);
2627 }
2628
2629 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2630         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2631         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2632         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2633         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2634         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2635         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2636 };
2637
2638 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2639 {
2640         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2641         int flag;
2642
2643         *mntrflags = 0;
2644
2645         if (!nla)
2646                 return -EINVAL;
2647
2648         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2649                              nla, mntr_flags_policy))
2650                 return -EINVAL;
2651
2652         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2653                 if (flags[flag])
2654                         *mntrflags |= (1<<flag);
2655
2656         return 0;
2657 }
2658
2659 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2660                                struct net_device *netdev, u8 use_4addr,
2661                                enum nl80211_iftype iftype)
2662 {
2663         if (!use_4addr) {
2664                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2665                         return -EBUSY;
2666                 return 0;
2667         }
2668
2669         switch (iftype) {
2670         case NL80211_IFTYPE_AP_VLAN:
2671                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2672                         return 0;
2673                 break;
2674         case NL80211_IFTYPE_STATION:
2675                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2676                         return 0;
2677                 break;
2678         default:
2679                 break;
2680         }
2681
2682         return -EOPNOTSUPP;
2683 }
2684
2685 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2686 {
2687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2688         struct vif_params params;
2689         int err;
2690         enum nl80211_iftype otype, ntype;
2691         struct net_device *dev = info->user_ptr[1];
2692         u32 _flags, *flags = NULL;
2693         bool change = false;
2694
2695         memset(&params, 0, sizeof(params));
2696
2697         otype = ntype = dev->ieee80211_ptr->iftype;
2698
2699         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2700                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2701                 if (otype != ntype)
2702                         change = true;
2703                 if (ntype > NL80211_IFTYPE_MAX)
2704                         return -EINVAL;
2705         }
2706
2707         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2708                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2709
2710                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2711                         return -EINVAL;
2712                 if (netif_running(dev))
2713                         return -EBUSY;
2714
2715                 wdev_lock(wdev);
2716                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2717                              IEEE80211_MAX_MESH_ID_LEN);
2718                 wdev->mesh_id_up_len =
2719                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2720                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2721                        wdev->mesh_id_up_len);
2722                 wdev_unlock(wdev);
2723         }
2724
2725         if (info->attrs[NL80211_ATTR_4ADDR]) {
2726                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2727                 change = true;
2728                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2729                 if (err)
2730                         return err;
2731         } else {
2732                 params.use_4addr = -1;
2733         }
2734
2735         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2736                 if (ntype != NL80211_IFTYPE_MONITOR)
2737                         return -EINVAL;
2738                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2739                                           &_flags);
2740                 if (err)
2741                         return err;
2742
2743                 flags = &_flags;
2744                 change = true;
2745         }
2746
2747         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2748                 const u8 *mumimo_groups;
2749                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2750
2751                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2752                         return -EOPNOTSUPP;
2753
2754                 mumimo_groups =
2755                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2756
2757                 /* bits 0 and 63 are reserved and must be zero */
2758                 if ((mumimo_groups[0] & BIT(7)) ||
2759                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2760                         return -EINVAL;
2761
2762                 memcpy(params.vht_mumimo_groups, mumimo_groups,
2763                        VHT_MUMIMO_GROUPS_DATA_LEN);
2764                 change = true;
2765         }
2766
2767         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2768                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2769
2770                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2771                         return -EOPNOTSUPP;
2772
2773                 nla_memcpy(params.macaddr,
2774                            info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2775                            ETH_ALEN);
2776                 change = true;
2777         }
2778
2779         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2780             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2781                 return -EOPNOTSUPP;
2782
2783         if (change)
2784                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2785         else
2786                 err = 0;
2787
2788         if (!err && params.use_4addr != -1)
2789                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2790
2791         return err;
2792 }
2793
2794 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2795 {
2796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2797         struct vif_params params;
2798         struct wireless_dev *wdev;
2799         struct sk_buff *msg;
2800         int err;
2801         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2802         u32 flags;
2803
2804         /* to avoid failing a new interface creation due to pending removal */
2805         cfg80211_destroy_ifaces(rdev);
2806
2807         memset(&params, 0, sizeof(params));
2808
2809         if (!info->attrs[NL80211_ATTR_IFNAME])
2810                 return -EINVAL;
2811
2812         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2813                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2814                 if (type > NL80211_IFTYPE_MAX)
2815                         return -EINVAL;
2816         }
2817
2818         if (!rdev->ops->add_virtual_intf ||
2819             !(rdev->wiphy.interface_modes & (1 << type)))
2820                 return -EOPNOTSUPP;
2821
2822         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2823              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2824             info->attrs[NL80211_ATTR_MAC]) {
2825                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2826                            ETH_ALEN);
2827                 if (!is_valid_ether_addr(params.macaddr))
2828                         return -EADDRNOTAVAIL;
2829         }
2830
2831         if (info->attrs[NL80211_ATTR_4ADDR]) {
2832                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2833                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2834                 if (err)
2835                         return err;
2836         }
2837
2838         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2839                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2840                                   &flags);
2841
2842         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2843             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2844                 return -EOPNOTSUPP;
2845
2846         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2847         if (!msg)
2848                 return -ENOMEM;
2849
2850         wdev = rdev_add_virtual_intf(rdev,
2851                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2852                                 NET_NAME_USER, type, err ? NULL : &flags,
2853                                 &params);
2854         if (WARN_ON(!wdev)) {
2855                 nlmsg_free(msg);
2856                 return -EPROTO;
2857         } else if (IS_ERR(wdev)) {
2858                 nlmsg_free(msg);
2859                 return PTR_ERR(wdev);
2860         }
2861
2862         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2863                 wdev->owner_nlportid = info->snd_portid;
2864
2865         switch (type) {
2866         case NL80211_IFTYPE_MESH_POINT:
2867                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2868                         break;
2869                 wdev_lock(wdev);
2870                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2871                              IEEE80211_MAX_MESH_ID_LEN);
2872                 wdev->mesh_id_up_len =
2873                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2874                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2875                        wdev->mesh_id_up_len);
2876                 wdev_unlock(wdev);
2877                 break;
2878         case NL80211_IFTYPE_P2P_DEVICE:
2879                 /*
2880                  * P2P Device doesn't have a netdev, so doesn't go
2881                  * through the netdev notifier and must be added here
2882                  */
2883                 mutex_init(&wdev->mtx);
2884                 INIT_LIST_HEAD(&wdev->event_list);
2885                 spin_lock_init(&wdev->event_lock);
2886                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2887                 spin_lock_init(&wdev->mgmt_registrations_lock);
2888
2889                 wdev->identifier = ++rdev->wdev_id;
2890                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2891                 rdev->devlist_generation++;
2892                 break;
2893         default:
2894                 break;
2895         }
2896
2897         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2898                                rdev, wdev, false) < 0) {
2899                 nlmsg_free(msg);
2900                 return -ENOBUFS;
2901         }
2902
2903         /*
2904          * For wdevs which have no associated netdev object (e.g. of type
2905          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2906          * For all other types, the event will be generated from the
2907          * netdev notifier
2908          */
2909         if (!wdev->netdev)
2910                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2911
2912         return genlmsg_reply(msg, info);
2913 }
2914
2915 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2916 {
2917         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2918         struct wireless_dev *wdev = info->user_ptr[1];
2919
2920         if (!rdev->ops->del_virtual_intf)
2921                 return -EOPNOTSUPP;
2922
2923         /*
2924          * If we remove a wireless device without a netdev then clear
2925          * user_ptr[1] so that nl80211_post_doit won't dereference it
2926          * to check if it needs to do dev_put(). Otherwise it crashes
2927          * since the wdev has been freed, unlike with a netdev where
2928          * we need the dev_put() for the netdev to really be freed.
2929          */
2930         if (!wdev->netdev)
2931                 info->user_ptr[1] = NULL;
2932
2933         return rdev_del_virtual_intf(rdev, wdev);
2934 }
2935
2936 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2937 {
2938         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2939         struct net_device *dev = info->user_ptr[1];
2940         u16 noack_map;
2941
2942         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2943                 return -EINVAL;
2944
2945         if (!rdev->ops->set_noack_map)
2946                 return -EOPNOTSUPP;
2947
2948         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2949
2950         return rdev_set_noack_map(rdev, dev, noack_map);
2951 }
2952
2953 struct get_key_cookie {
2954         struct sk_buff *msg;
2955         int error;
2956         int idx;
2957 };
2958
2959 static void get_key_callback(void *c, struct key_params *params)
2960 {
2961         struct nlattr *key;
2962         struct get_key_cookie *cookie = c;
2963
2964         if ((params->key &&
2965              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2966                      params->key_len, params->key)) ||
2967             (params->seq &&
2968              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2969                      params->seq_len, params->seq)) ||
2970             (params->cipher &&
2971              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2972                          params->cipher)))
2973                 goto nla_put_failure;
2974
2975         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2976         if (!key)
2977                 goto nla_put_failure;
2978
2979         if ((params->key &&
2980              nla_put(cookie->msg, NL80211_KEY_DATA,
2981                      params->key_len, params->key)) ||
2982             (params->seq &&
2983              nla_put(cookie->msg, NL80211_KEY_SEQ,
2984                      params->seq_len, params->seq)) ||
2985             (params->cipher &&
2986              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2987                          params->cipher)))
2988                 goto nla_put_failure;
2989
2990         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2991                 goto nla_put_failure;
2992
2993         nla_nest_end(cookie->msg, key);
2994
2995         return;
2996  nla_put_failure:
2997         cookie->error = 1;
2998 }
2999
3000 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3001 {
3002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3003         int err;
3004         struct net_device *dev = info->user_ptr[1];
3005         u8 key_idx = 0;
3006         const u8 *mac_addr = NULL;
3007         bool pairwise;
3008         struct get_key_cookie cookie = {
3009                 .error = 0,
3010         };
3011         void *hdr;
3012         struct sk_buff *msg;
3013
3014         if (info->attrs[NL80211_ATTR_KEY_IDX])
3015                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3016
3017         if (key_idx > 5)
3018                 return -EINVAL;
3019
3020         if (info->attrs[NL80211_ATTR_MAC])
3021                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3022
3023         pairwise = !!mac_addr;
3024         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3025                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3026
3027                 if (kt >= NUM_NL80211_KEYTYPES)
3028                         return -EINVAL;
3029                 if (kt != NL80211_KEYTYPE_GROUP &&
3030                     kt != NL80211_KEYTYPE_PAIRWISE)
3031                         return -EINVAL;
3032                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3033         }
3034
3035         if (!rdev->ops->get_key)
3036                 return -EOPNOTSUPP;
3037
3038         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3039                 return -ENOENT;
3040
3041         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3042         if (!msg)
3043                 return -ENOMEM;
3044
3045         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3046                              NL80211_CMD_NEW_KEY);
3047         if (!hdr)
3048                 goto nla_put_failure;
3049
3050         cookie.msg = msg;
3051         cookie.idx = key_idx;
3052
3053         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3054             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3055                 goto nla_put_failure;
3056         if (mac_addr &&
3057             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3058                 goto nla_put_failure;
3059
3060         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3061                            get_key_callback);
3062
3063         if (err)
3064                 goto free_msg;
3065
3066         if (cookie.error)
3067                 goto nla_put_failure;
3068
3069         genlmsg_end(msg, hdr);
3070         return genlmsg_reply(msg, info);
3071
3072  nla_put_failure:
3073         err = -ENOBUFS;
3074  free_msg:
3075         nlmsg_free(msg);
3076         return err;
3077 }
3078
3079 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3080 {
3081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3082         struct key_parse key;
3083         int err;
3084         struct net_device *dev = info->user_ptr[1];
3085
3086         err = nl80211_parse_key(info, &key);
3087         if (err)
3088                 return err;
3089
3090         if (key.idx < 0)
3091                 return -EINVAL;
3092
3093         /* only support setting default key */
3094         if (!key.def && !key.defmgmt)
3095                 return -EINVAL;
3096
3097         wdev_lock(dev->ieee80211_ptr);
3098
3099         if (key.def) {
3100                 if (!rdev->ops->set_default_key) {
3101                         err = -EOPNOTSUPP;
3102                         goto out;
3103                 }
3104
3105                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3106                 if (err)
3107                         goto out;
3108
3109                 err = rdev_set_default_key(rdev, dev, key.idx,
3110                                                  key.def_uni, key.def_multi);
3111
3112                 if (err)
3113                         goto out;
3114
3115 #ifdef CONFIG_CFG80211_WEXT
3116                 dev->ieee80211_ptr->wext.default_key = key.idx;
3117 #endif
3118         } else {
3119                 if (key.def_uni || !key.def_multi) {
3120                         err = -EINVAL;
3121                         goto out;
3122                 }
3123
3124                 if (!rdev->ops->set_default_mgmt_key) {
3125                         err = -EOPNOTSUPP;
3126                         goto out;
3127                 }
3128
3129                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3130                 if (err)
3131                         goto out;
3132
3133                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3134                 if (err)
3135                         goto out;
3136
3137 #ifdef CONFIG_CFG80211_WEXT
3138                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3139 #endif
3140         }
3141
3142  out:
3143         wdev_unlock(dev->ieee80211_ptr);
3144
3145         return err;
3146 }
3147
3148 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3149 {
3150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3151         int err;
3152         struct net_device *dev = info->user_ptr[1];
3153         struct key_parse key;
3154         const u8 *mac_addr = NULL;
3155
3156         err = nl80211_parse_key(info, &key);
3157         if (err)
3158                 return err;
3159
3160         if (!key.p.key)
3161                 return -EINVAL;
3162
3163         if (info->attrs[NL80211_ATTR_MAC])
3164                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3165
3166         if (key.type == -1) {
3167                 if (mac_addr)
3168                         key.type = NL80211_KEYTYPE_PAIRWISE;
3169                 else
3170                         key.type = NL80211_KEYTYPE_GROUP;
3171         }
3172
3173         /* for now */
3174         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3175             key.type != NL80211_KEYTYPE_GROUP)
3176                 return -EINVAL;
3177
3178         if (!rdev->ops->add_key)
3179                 return -EOPNOTSUPP;
3180
3181         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3182                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3183                                            mac_addr))
3184                 return -EINVAL;
3185
3186         wdev_lock(dev->ieee80211_ptr);
3187         err = nl80211_key_allowed(dev->ieee80211_ptr);
3188         if (!err)
3189                 err = rdev_add_key(rdev, dev, key.idx,
3190                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3191                                     mac_addr, &key.p);
3192         wdev_unlock(dev->ieee80211_ptr);
3193
3194         return err;
3195 }
3196
3197 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3198 {
3199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3200         int err;
3201         struct net_device *dev = info->user_ptr[1];
3202         u8 *mac_addr = NULL;
3203         struct key_parse key;
3204
3205         err = nl80211_parse_key(info, &key);
3206         if (err)
3207                 return err;
3208
3209         if (info->attrs[NL80211_ATTR_MAC])
3210                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3211
3212         if (key.type == -1) {
3213                 if (mac_addr)
3214                         key.type = NL80211_KEYTYPE_PAIRWISE;
3215                 else
3216                         key.type = NL80211_KEYTYPE_GROUP;
3217         }
3218
3219         /* for now */
3220         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3221             key.type != NL80211_KEYTYPE_GROUP)
3222                 return -EINVAL;
3223
3224         if (!rdev->ops->del_key)
3225                 return -EOPNOTSUPP;
3226
3227         wdev_lock(dev->ieee80211_ptr);
3228         err = nl80211_key_allowed(dev->ieee80211_ptr);
3229
3230         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3231             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3232                 err = -ENOENT;
3233
3234         if (!err)
3235                 err = rdev_del_key(rdev, dev, key.idx,
3236                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3237                                    mac_addr);
3238
3239 #ifdef CONFIG_CFG80211_WEXT
3240         if (!err) {
3241                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3242                         dev->ieee80211_ptr->wext.default_key = -1;
3243                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3244                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3245         }
3246 #endif
3247         wdev_unlock(dev->ieee80211_ptr);
3248
3249         return err;
3250 }
3251
3252 /* This function returns an error or the number of nested attributes */
3253 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3254 {
3255         struct nlattr *attr;
3256         int n_entries = 0, tmp;
3257
3258         nla_for_each_nested(attr, nl_attr, tmp) {
3259                 if (nla_len(attr) != ETH_ALEN)
3260                         return -EINVAL;
3261
3262                 n_entries++;
3263         }
3264
3265         return n_entries;
3266 }
3267
3268 /*
3269  * This function parses ACL information and allocates memory for ACL data.
3270  * On successful return, the calling function is responsible to free the
3271  * ACL buffer returned by this function.
3272  */
3273 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3274                                                 struct genl_info *info)
3275 {
3276         enum nl80211_acl_policy acl_policy;
3277         struct nlattr *attr;
3278         struct cfg80211_acl_data *acl;
3279         int i = 0, n_entries, tmp;
3280
3281         if (!wiphy->max_acl_mac_addrs)
3282                 return ERR_PTR(-EOPNOTSUPP);
3283
3284         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3285                 return ERR_PTR(-EINVAL);
3286
3287         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3288         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3289             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3290                 return ERR_PTR(-EINVAL);
3291
3292         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3293                 return ERR_PTR(-EINVAL);
3294
3295         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3296         if (n_entries < 0)
3297                 return ERR_PTR(n_entries);
3298
3299         if (n_entries > wiphy->max_acl_mac_addrs)
3300                 return ERR_PTR(-ENOTSUPP);
3301
3302         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3303                       GFP_KERNEL);
3304         if (!acl)
3305                 return ERR_PTR(-ENOMEM);
3306
3307         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3308                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3309                 i++;
3310         }
3311
3312         acl->n_acl_entries = n_entries;
3313         acl->acl_policy = acl_policy;
3314
3315         return acl;
3316 }
3317
3318 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3319 {
3320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3321         struct net_device *dev = info->user_ptr[1];
3322         struct cfg80211_acl_data *acl;
3323         int err;
3324
3325         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3326             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3327                 return -EOPNOTSUPP;
3328
3329         if (!dev->ieee80211_ptr->beacon_interval)
3330                 return -EINVAL;
3331
3332         acl = parse_acl_data(&rdev->wiphy, info);
3333         if (IS_ERR(acl))
3334                 return PTR_ERR(acl);
3335
3336         err = rdev_set_mac_acl(rdev, dev, acl);
3337
3338         kfree(acl);
3339
3340         return err;
3341 }
3342
3343 static int nl80211_parse_beacon(struct nlattr *attrs[],
3344                                 struct cfg80211_beacon_data *bcn)
3345 {
3346         bool haveinfo = false;
3347
3348         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3349             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3350             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3351             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3352                 return -EINVAL;
3353
3354         memset(bcn, 0, sizeof(*bcn));
3355
3356         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3357                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3358                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3359                 if (!bcn->head_len)
3360                         return -EINVAL;
3361                 haveinfo = true;
3362         }
3363
3364         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3365                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3366                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3367                 haveinfo = true;
3368         }
3369
3370         if (!haveinfo)
3371                 return -EINVAL;
3372
3373         if (attrs[NL80211_ATTR_IE]) {
3374                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3375                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3376         }
3377
3378         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3379                 bcn->proberesp_ies =
3380                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3381                 bcn->proberesp_ies_len =
3382                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3383         }
3384
3385         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3386                 bcn->assocresp_ies =
3387                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3388                 bcn->assocresp_ies_len =
3389                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3390         }
3391
3392         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3393                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3394                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3395         }
3396
3397         return 0;
3398 }
3399
3400 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3401                                    struct cfg80211_ap_settings *params)
3402 {
3403         struct wireless_dev *wdev;
3404         bool ret = false;
3405
3406         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3407                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3408                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3409                         continue;
3410
3411                 if (!wdev->preset_chandef.chan)
3412                         continue;
3413
3414                 params->chandef = wdev->preset_chandef;
3415                 ret = true;
3416                 break;
3417         }
3418
3419         return ret;
3420 }
3421
3422 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3423                                     enum nl80211_auth_type auth_type,
3424                                     enum nl80211_commands cmd)
3425 {
3426         if (auth_type > NL80211_AUTHTYPE_MAX)
3427                 return false;
3428
3429         switch (cmd) {
3430         case NL80211_CMD_AUTHENTICATE:
3431                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3432                     auth_type == NL80211_AUTHTYPE_SAE)
3433                         return false;
3434                 return true;
3435         case NL80211_CMD_CONNECT:
3436         case NL80211_CMD_START_AP:
3437                 /* SAE not supported yet */
3438                 if (auth_type == NL80211_AUTHTYPE_SAE)
3439                         return false;
3440                 return true;
3441         default:
3442                 return false;
3443         }
3444 }
3445
3446 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3447 {
3448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3449         struct net_device *dev = info->user_ptr[1];
3450         struct wireless_dev *wdev = dev->ieee80211_ptr;
3451         struct cfg80211_ap_settings params;
3452         int err;
3453
3454         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3455             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3456                 return -EOPNOTSUPP;
3457
3458         if (!rdev->ops->start_ap)
3459                 return -EOPNOTSUPP;
3460
3461         if (wdev->beacon_interval)
3462                 return -EALREADY;
3463
3464         memset(&params, 0, sizeof(params));
3465
3466         /* these are required for START_AP */
3467         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3468             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3469             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3470                 return -EINVAL;
3471
3472         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3473         if (err)
3474                 return err;
3475
3476         params.beacon_interval =
3477                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3478         params.dtim_period =
3479                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3480
3481         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3482         if (err)
3483                 return err;
3484
3485         /*
3486          * In theory, some of these attributes should be required here
3487          * but since they were not used when the command was originally
3488          * added, keep them optional for old user space programs to let
3489          * them continue to work with drivers that do not need the
3490          * additional information -- drivers must check!
3491          */
3492         if (info->attrs[NL80211_ATTR_SSID]) {
3493                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3494                 params.ssid_len =
3495                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3496                 if (params.ssid_len == 0 ||
3497                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3498                         return -EINVAL;
3499         }
3500
3501         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3502                 params.hidden_ssid = nla_get_u32(
3503                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3504                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3505                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3506                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3507                         return -EINVAL;
3508         }
3509
3510         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3511
3512         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3513                 params.auth_type = nla_get_u32(
3514                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3515                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3516                                              NL80211_CMD_START_AP))
3517                         return -EINVAL;
3518         } else
3519                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3520
3521         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3522                                       NL80211_MAX_NR_CIPHER_SUITES);
3523         if (err)
3524                 return err;
3525
3526         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3527                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3528                         return -EOPNOTSUPP;
3529                 params.inactivity_timeout = nla_get_u16(
3530                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3531         }
3532
3533         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3534                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3535                         return -EINVAL;
3536                 params.p2p_ctwindow =
3537                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3538                 if (params.p2p_ctwindow > 127)
3539                         return -EINVAL;
3540                 if (params.p2p_ctwindow != 0 &&
3541                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3542                         return -EINVAL;
3543         }
3544
3545         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3546                 u8 tmp;
3547
3548                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3549                         return -EINVAL;
3550                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3551                 if (tmp > 1)
3552                         return -EINVAL;
3553                 params.p2p_opp_ps = tmp;
3554                 if (params.p2p_opp_ps != 0 &&
3555                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3556                         return -EINVAL;
3557         }
3558
3559         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3560                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3561                 if (err)
3562                         return err;
3563         } else if (wdev->preset_chandef.chan) {
3564                 params.chandef = wdev->preset_chandef;
3565         } else if (!nl80211_get_ap_channel(rdev, &params))
3566                 return -EINVAL;
3567
3568         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3569                                            wdev->iftype))
3570                 return -EINVAL;
3571
3572         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3573                 params.smps_mode =
3574                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3575                 switch (params.smps_mode) {
3576                 case NL80211_SMPS_OFF:
3577                         break;
3578                 case NL80211_SMPS_STATIC:
3579                         if (!(rdev->wiphy.features &
3580                               NL80211_FEATURE_STATIC_SMPS))
3581                                 return -EINVAL;
3582                         break;
3583                 case NL80211_SMPS_DYNAMIC:
3584                         if (!(rdev->wiphy.features &
3585                               NL80211_FEATURE_DYNAMIC_SMPS))
3586                                 return -EINVAL;
3587                         break;
3588                 default:
3589                         return -EINVAL;
3590                 }
3591         } else {
3592                 params.smps_mode = NL80211_SMPS_OFF;
3593         }
3594
3595         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3596         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3597                 return -EOPNOTSUPP;
3598
3599         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3600                 params.acl = parse_acl_data(&rdev->wiphy, info);
3601                 if (IS_ERR(params.acl))
3602                         return PTR_ERR(params.acl);
3603         }
3604
3605         wdev_lock(wdev);
3606         err = rdev_start_ap(rdev, dev, &params);
3607         if (!err) {
3608                 wdev->preset_chandef = params.chandef;
3609                 wdev->beacon_interval = params.beacon_interval;
3610                 wdev->chandef = params.chandef;
3611                 wdev->ssid_len = params.ssid_len;
3612                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3613         }
3614         wdev_unlock(wdev);
3615
3616         kfree(params.acl);
3617
3618         return err;
3619 }
3620
3621 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3622 {
3623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3624         struct net_device *dev = info->user_ptr[1];
3625         struct wireless_dev *wdev = dev->ieee80211_ptr;
3626         struct cfg80211_beacon_data params;
3627         int err;
3628
3629         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3630             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3631                 return -EOPNOTSUPP;
3632
3633         if (!rdev->ops->change_beacon)
3634                 return -EOPNOTSUPP;
3635
3636         if (!wdev->beacon_interval)
3637                 return -EINVAL;
3638
3639         err = nl80211_parse_beacon(info->attrs, &params);
3640         if (err)
3641                 return err;
3642
3643         wdev_lock(wdev);
3644         err = rdev_change_beacon(rdev, dev, &params);
3645         wdev_unlock(wdev);
3646
3647         return err;
3648 }
3649
3650 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3651 {
3652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3653         struct net_device *dev = info->user_ptr[1];
3654
3655         return cfg80211_stop_ap(rdev, dev, false);
3656 }
3657
3658 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3659         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3660         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3661         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3662         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3663         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3664         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3665 };
3666
3667 static int parse_station_flags(struct genl_info *info,
3668                                enum nl80211_iftype iftype,
3669                                struct station_parameters *params)
3670 {
3671         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3672         struct nlattr *nla;
3673         int flag;
3674
3675         /*
3676          * Try parsing the new attribute first so userspace
3677          * can specify both for older kernels.
3678          */
3679         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3680         if (nla) {
3681                 struct nl80211_sta_flag_update *sta_flags;
3682
3683                 sta_flags = nla_data(nla);
3684                 params->sta_flags_mask = sta_flags->mask;
3685                 params->sta_flags_set = sta_flags->set;
3686                 params->sta_flags_set &= params->sta_flags_mask;
3687                 if ((params->sta_flags_mask |
3688                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3689                         return -EINVAL;
3690                 return 0;
3691         }
3692
3693         /* if present, parse the old attribute */
3694
3695         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3696         if (!nla)
3697                 return 0;
3698
3699         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3700                              nla, sta_flags_policy))
3701                 return -EINVAL;
3702
3703         /*
3704          * Only allow certain flags for interface types so that
3705          * other attributes are silently ignored. Remember that
3706          * this is backward compatibility code with old userspace
3707          * and shouldn't be hit in other cases anyway.
3708          */
3709         switch (iftype) {
3710         case NL80211_IFTYPE_AP:
3711         case NL80211_IFTYPE_AP_VLAN:
3712         case NL80211_IFTYPE_P2P_GO:
3713                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3714                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3715                                          BIT(NL80211_STA_FLAG_WME) |
3716                                          BIT(NL80211_STA_FLAG_MFP);
3717                 break;
3718         case NL80211_IFTYPE_P2P_CLIENT:
3719         case NL80211_IFTYPE_STATION:
3720                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3721                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3722                 break;
3723         case NL80211_IFTYPE_MESH_POINT:
3724                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3725                                          BIT(NL80211_STA_FLAG_MFP) |
3726                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3727         default:
3728                 return -EINVAL;
3729         }
3730
3731         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3732                 if (flags[flag]) {
3733                         params->sta_flags_set |= (1<<flag);
3734
3735                         /* no longer support new API additions in old API */
3736                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3737                                 return -EINVAL;
3738                 }
3739         }
3740
3741         return 0;
3742 }
3743
3744 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3745                                  int attr)
3746 {
3747         struct nlattr *rate;
3748         u32 bitrate;
3749         u16 bitrate_compat;
3750         enum nl80211_attrs rate_flg;
3751
3752         rate = nla_nest_start(msg, attr);
3753         if (!rate)
3754                 return false;
3755
3756         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3757         bitrate = cfg80211_calculate_bitrate(info);
3758         /* report 16-bit bitrate only if we can */
3759         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3760         if (bitrate > 0 &&
3761             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3762                 return false;
3763         if (bitrate_compat > 0 &&
3764             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3765                 return false;
3766
3767         switch (info->bw) {
3768         case RATE_INFO_BW_5:
3769                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3770                 break;
3771         case RATE_INFO_BW_10:
3772                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3773                 break;
3774         default:
3775                 WARN_ON(1);
3776                 /* fall through */
3777         case RATE_INFO_BW_20:
3778                 rate_flg = 0;
3779                 break;
3780         case RATE_INFO_BW_40:
3781                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3782                 break;
3783         case RATE_INFO_BW_80:
3784                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3785                 break;
3786         case RATE_INFO_BW_160:
3787                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3788                 break;
3789         }
3790
3791         if (rate_flg && nla_put_flag(msg, rate_flg))
3792                 return false;
3793
3794         if (info->flags & RATE_INFO_FLAGS_MCS) {
3795                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3796                         return false;
3797                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3798                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3799                         return false;
3800         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3801                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3802                         return false;
3803                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3804                         return false;
3805                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3806                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3807                         return false;
3808         }
3809
3810         nla_nest_end(msg, rate);
3811         return true;
3812 }
3813
3814 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3815                                int id)
3816 {
3817         void *attr;
3818         int i = 0;
3819
3820         if (!mask)
3821                 return true;
3822
3823         attr = nla_nest_start(msg, id);
3824         if (!attr)
3825                 return false;
3826
3827         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3828                 if (!(mask & BIT(i)))
3829                         continue;
3830
3831                 if (nla_put_u8(msg, i, signal[i]))
3832                         return false;
3833         }
3834
3835         nla_nest_end(msg, attr);
3836
3837         return true;
3838 }
3839
3840 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3841                                 u32 seq, int flags,
3842                                 struct cfg80211_registered_device *rdev,
3843                                 struct net_device *dev,
3844                                 const u8 *mac_addr, struct station_info *sinfo)
3845 {
3846         void *hdr;
3847         struct nlattr *sinfoattr, *bss_param;
3848
3849         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3850         if (!hdr)
3851                 return -1;
3852
3853         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3854             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3855             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3856                 goto nla_put_failure;
3857
3858         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3859         if (!sinfoattr)
3860                 goto nla_put_failure;
3861
3862 #define PUT_SINFO(attr, memb, type) do {                                \
3863         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
3864         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
3865             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3866                              sinfo->memb))                              \
3867                 goto nla_put_failure;                                   \
3868         } while (0)
3869 #define PUT_SINFO_U64(attr, memb) do {                                  \
3870         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
3871             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
3872                               sinfo->memb, NL80211_STA_INFO_PAD))       \
3873                 goto nla_put_failure;                                   \
3874         } while (0)
3875
3876         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3877         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3878
3879         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3880                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3881             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3882                         (u32)sinfo->rx_bytes))
3883                 goto nla_put_failure;
3884
3885         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3886                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3887             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3888                         (u32)sinfo->tx_bytes))
3889                 goto nla_put_failure;
3890
3891         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
3892         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
3893         PUT_SINFO(LLID, llid, u16);
3894         PUT_SINFO(PLID, plid, u16);
3895         PUT_SINFO(PLINK_STATE, plink_state, u8);
3896         PUT_SINFO_U64(RX_DURATION, rx_duration);
3897
3898         switch (rdev->wiphy.signal_type) {
3899         case CFG80211_SIGNAL_TYPE_MBM:
3900                 PUT_SINFO(SIGNAL, signal, u8);
3901                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3902                 break;
3903         default:
3904                 break;
3905         }
3906         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3907                 if (!nl80211_put_signal(msg, sinfo->chains,
3908                                         sinfo->chain_signal,
3909                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3910                         goto nla_put_failure;
3911         }
3912         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3913                 if (!nl80211_put_signal(msg, sinfo->chains,
3914                                         sinfo->chain_signal_avg,
3915                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3916                         goto nla_put_failure;
3917         }
3918         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3919                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3920                                           NL80211_STA_INFO_TX_BITRATE))
3921                         goto nla_put_failure;
3922         }
3923         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3924                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3925                                           NL80211_STA_INFO_RX_BITRATE))
3926                         goto nla_put_failure;
3927         }
3928
3929         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3930         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3931         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3932         PUT_SINFO(TX_FAILED, tx_failed, u32);
3933         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3934         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3935         PUT_SINFO(LOCAL_PM, local_pm, u32);
3936         PUT_SINFO(PEER_PM, peer_pm, u32);
3937         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3938
3939         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3940                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3941                 if (!bss_param)
3942                         goto nla_put_failure;
3943
3944                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3945                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3946                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3947                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3948                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3949                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3950                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3951                                sinfo->bss_param.dtim_period) ||
3952                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3953                                 sinfo->bss_param.beacon_interval))
3954                         goto nla_put_failure;
3955
3956                 nla_nest_end(msg, bss_param);
3957         }
3958         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3959             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3960                     sizeof(struct nl80211_sta_flag_update),
3961                     &sinfo->sta_flags))
3962                 goto nla_put_failure;
3963
3964         PUT_SINFO_U64(T_OFFSET, t_offset);
3965         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
3966         PUT_SINFO_U64(BEACON_RX, rx_beacon);
3967         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3968
3969 #undef PUT_SINFO
3970 #undef PUT_SINFO_U64
3971
3972         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3973                 struct nlattr *tidsattr;
3974                 int tid;
3975
3976                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3977                 if (!tidsattr)
3978                         goto nla_put_failure;
3979
3980                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3981                         struct cfg80211_tid_stats *tidstats;
3982                         struct nlattr *tidattr;
3983
3984                         tidstats = &sinfo->pertid[tid];
3985
3986                         if (!tidstats->filled)
3987                                 continue;
3988
3989                         tidattr = nla_nest_start(msg, tid + 1);
3990                         if (!tidattr)
3991                                 goto nla_put_failure;
3992
3993 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
3994         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3995             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
3996                               tidstats->memb, NL80211_TID_STATS_PAD))   \
3997                 goto nla_put_failure;                                   \
3998         } while (0)
3999
4000                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4001                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4002                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4003                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4004
4005 #undef PUT_TIDVAL_U64
4006                         nla_nest_end(msg, tidattr);
4007                 }
4008
4009                 nla_nest_end(msg, tidsattr);
4010         }
4011
4012         nla_nest_end(msg, sinfoattr);
4013
4014         if (sinfo->assoc_req_ies_len &&
4015             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4016                     sinfo->assoc_req_ies))
4017                 goto nla_put_failure;
4018
4019         genlmsg_end(msg, hdr);
4020         return 0;
4021
4022  nla_put_failure:
4023         genlmsg_cancel(msg, hdr);
4024         return -EMSGSIZE;
4025 }
4026
4027 static int nl80211_dump_station(struct sk_buff *skb,
4028                                 struct netlink_callback *cb)
4029 {
4030         struct station_info sinfo;
4031         struct cfg80211_registered_device *rdev;
4032         struct wireless_dev *wdev;
4033         u8 mac_addr[ETH_ALEN];
4034         int sta_idx = cb->args[2];
4035         int err;
4036
4037         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4038         if (err)
4039                 return err;
4040
4041         if (!wdev->netdev) {
4042                 err = -EINVAL;
4043                 goto out_err;
4044         }
4045
4046         if (!rdev->ops->dump_station) {
4047                 err = -EOPNOTSUPP;
4048                 goto out_err;
4049         }
4050
4051         while (1) {
4052                 memset(&sinfo, 0, sizeof(sinfo));
4053                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4054                                         mac_addr, &sinfo);
4055                 if (err == -ENOENT)
4056                         break;
4057                 if (err)
4058                         goto out_err;
4059
4060                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4061                                 NETLINK_CB(cb->skb).portid,
4062                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4063                                 rdev, wdev->netdev, mac_addr,
4064                                 &sinfo) < 0)
4065                         goto out;
4066
4067                 sta_idx++;
4068         }
4069
4070  out:
4071         cb->args[2] = sta_idx;
4072         err = skb->len;
4073  out_err:
4074         nl80211_finish_wdev_dump(rdev);
4075
4076         return err;
4077 }
4078
4079 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4080 {
4081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4082         struct net_device *dev = info->user_ptr[1];
4083         struct station_info sinfo;
4084         struct sk_buff *msg;
4085         u8 *mac_addr = NULL;
4086         int err;
4087
4088         memset(&sinfo, 0, sizeof(sinfo));
4089
4090         if (!info->attrs[NL80211_ATTR_MAC])
4091                 return -EINVAL;
4092
4093         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4094
4095         if (!rdev->ops->get_station)
4096                 return -EOPNOTSUPP;
4097
4098         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4099         if (err)
4100                 return err;
4101
4102         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4103         if (!msg)
4104                 return -ENOMEM;
4105
4106         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4107                                  info->snd_portid, info->snd_seq, 0,
4108                                  rdev, dev, mac_addr, &sinfo) < 0) {
4109                 nlmsg_free(msg);
4110                 return -ENOBUFS;
4111         }
4112
4113         return genlmsg_reply(msg, info);
4114 }
4115
4116 int cfg80211_check_station_change(struct wiphy *wiphy,
4117                                   struct station_parameters *params,
4118                                   enum cfg80211_station_type statype)
4119 {
4120         if (params->listen_interval != -1 &&
4121             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4122                 return -EINVAL;
4123
4124         if (params->support_p2p_ps != -1 &&
4125             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4126                 return -EINVAL;
4127
4128         if (params->aid &&
4129             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4130             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4131                 return -EINVAL;
4132
4133         /* When you run into this, adjust the code below for the new flag */
4134         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4135
4136         switch (statype) {
4137         case CFG80211_STA_MESH_PEER_KERNEL:
4138         case CFG80211_STA_MESH_PEER_USER:
4139                 /*
4140                  * No ignoring the TDLS flag here -- the userspace mesh
4141                  * code doesn't have the bug of including TDLS in the
4142                  * mask everywhere.
4143                  */
4144                 if (params->sta_flags_mask &
4145                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4146                                   BIT(NL80211_STA_FLAG_MFP) |
4147                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4148                         return -EINVAL;
4149                 break;
4150         case CFG80211_STA_TDLS_PEER_SETUP:
4151         case CFG80211_STA_TDLS_PEER_ACTIVE:
4152                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4153                         return -EINVAL;
4154                 /* ignore since it can't change */
4155                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4156                 break;
4157         default:
4158                 /* disallow mesh-specific things */
4159                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4160                         return -EINVAL;
4161                 if (params->local_pm)
4162                         return -EINVAL;
4163                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4164                         return -EINVAL;
4165         }
4166
4167         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4168             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4169                 /* TDLS can't be set, ... */
4170                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4171                         return -EINVAL;
4172                 /*
4173                  * ... but don't bother the driver with it. This works around
4174                  * a hostapd/wpa_supplicant issue -- it always includes the
4175                  * TLDS_PEER flag in the mask even for AP mode.
4176                  */
4177                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4178         }
4179
4180         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4181             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4182                 /* reject other things that can't change */
4183                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4184                         return -EINVAL;
4185                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4186                         return -EINVAL;
4187                 if (params->supported_rates)
4188                         return -EINVAL;
4189                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4190                         return -EINVAL;
4191         }
4192
4193         if (statype != CFG80211_STA_AP_CLIENT &&
4194             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4195                 if (params->vlan)
4196                         return -EINVAL;
4197         }
4198
4199         switch (statype) {
4200         case CFG80211_STA_AP_MLME_CLIENT:
4201                 /* Use this only for authorizing/unauthorizing a station */
4202                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4203                         return -EOPNOTSUPP;
4204                 break;
4205         case CFG80211_STA_AP_CLIENT:
4206         case CFG80211_STA_AP_CLIENT_UNASSOC:
4207                 /* accept only the listed bits */
4208                 if (params->sta_flags_mask &
4209                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4210                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4211                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4212                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4213                                   BIT(NL80211_STA_FLAG_WME) |
4214                                   BIT(NL80211_STA_FLAG_MFP)))
4215                         return -EINVAL;
4216
4217                 /* but authenticated/associated only if driver handles it */
4218                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4219                     params->sta_flags_mask &
4220                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4221                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4222                         return -EINVAL;
4223                 break;
4224         case CFG80211_STA_IBSS:
4225         case CFG80211_STA_AP_STA:
4226                 /* reject any changes other than AUTHORIZED */
4227                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4228                         return -EINVAL;
4229                 break;
4230         case CFG80211_STA_TDLS_PEER_SETUP:
4231                 /* reject any changes other than AUTHORIZED or WME */
4232                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4233                                                BIT(NL80211_STA_FLAG_WME)))
4234                         return -EINVAL;
4235                 /* force (at least) rates when authorizing */
4236                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4237                     !params->supported_rates)
4238                         return -EINVAL;
4239                 break;
4240         case CFG80211_STA_TDLS_PEER_ACTIVE:
4241                 /* reject any changes */
4242                 return -EINVAL;
4243         case CFG80211_STA_MESH_PEER_KERNEL:
4244                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4245                         return -EINVAL;
4246                 break;
4247         case CFG80211_STA_MESH_PEER_USER:
4248                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4249                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4250                         return -EINVAL;
4251                 break;
4252         }
4253
4254         return 0;
4255 }
4256 EXPORT_SYMBOL(cfg80211_check_station_change);
4257
4258 /*
4259  * Get vlan interface making sure it is running and on the right wiphy.
4260  */
4261 static struct net_device *get_vlan(struct genl_info *info,
4262                                    struct cfg80211_registered_device *rdev)
4263 {
4264         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4265         struct net_device *v;
4266         int ret;
4267
4268         if (!vlanattr)
4269                 return NULL;
4270
4271         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4272         if (!v)
4273                 return ERR_PTR(-ENODEV);
4274
4275         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4276                 ret = -EINVAL;
4277                 goto error;
4278         }
4279
4280         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4281             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4282             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4283                 ret = -EINVAL;
4284                 goto error;
4285         }
4286
4287         if (!netif_running(v)) {
4288                 ret = -ENETDOWN;
4289                 goto error;
4290         }
4291
4292         return v;
4293  error:
4294         dev_put(v);
4295         return ERR_PTR(ret);
4296 }
4297
4298 static const struct nla_policy
4299 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4300         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4301         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4302 };
4303
4304 static int nl80211_parse_sta_wme(struct genl_info *info,
4305                                  struct station_parameters *params)
4306 {
4307         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4308         struct nlattr *nla;
4309         int err;
4310
4311         /* parse WME attributes if present */
4312         if (!info->attrs[NL80211_ATTR_STA_WME])
4313                 return 0;
4314
4315         nla = info->attrs[NL80211_ATTR_STA_WME];
4316         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4317                                nl80211_sta_wme_policy);
4318         if (err)
4319                 return err;
4320
4321         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4322                 params->uapsd_queues = nla_get_u8(
4323                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4324         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4325                 return -EINVAL;
4326
4327         if (tb[NL80211_STA_WME_MAX_SP])
4328                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4329
4330         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4331                 return -EINVAL;
4332
4333         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4334
4335         return 0;
4336 }
4337
4338 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4339                                       struct station_parameters *params)
4340 {
4341         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4342                 params->supported_channels =
4343                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4344                 params->supported_channels_len =
4345                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4346                 /*
4347                  * Need to include at least one (first channel, number of
4348                  * channels) tuple for each subband, and must have proper
4349                  * tuples for the rest of the data as well.
4350                  */
4351                 if (params->supported_channels_len < 2)
4352                         return -EINVAL;
4353                 if (params->supported_channels_len % 2)
4354                         return -EINVAL;
4355         }
4356
4357         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4358                 params->supported_oper_classes =
4359                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4360                 params->supported_oper_classes_len =
4361                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4362                 /*
4363                  * The value of the Length field of the Supported Operating
4364                  * Classes element is between 2 and 253.
4365                  */
4366                 if (params->supported_oper_classes_len < 2 ||
4367                     params->supported_oper_classes_len > 253)
4368                         return -EINVAL;
4369         }
4370         return 0;
4371 }
4372
4373 static int nl80211_set_station_tdls(struct genl_info *info,
4374                                     struct station_parameters *params)
4375 {
4376         int err;
4377         /* Dummy STA entry gets updated once the peer capabilities are known */
4378         if (info->attrs[NL80211_ATTR_PEER_AID])
4379                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4380         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4381                 params->ht_capa =
4382                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4383         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4384                 params->vht_capa =
4385                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4386
4387         err = nl80211_parse_sta_channel_info(info, params);
4388         if (err)
4389                 return err;
4390
4391         return nl80211_parse_sta_wme(info, params);
4392 }
4393
4394 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4395 {
4396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4397         struct net_device *dev = info->user_ptr[1];
4398         struct station_parameters params;
4399         u8 *mac_addr;
4400         int err;
4401
4402         memset(&params, 0, sizeof(params));
4403
4404         if (!rdev->ops->change_station)
4405                 return -EOPNOTSUPP;
4406
4407         /*
4408          * AID and listen_interval properties can be set only for unassociated
4409          * station. Include these parameters here and will check them in
4410          * cfg80211_check_station_change().
4411          */
4412         if (info->attrs[NL80211_ATTR_STA_AID])
4413                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4414
4415         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4416                 params.listen_interval =
4417                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4418         else
4419                 params.listen_interval = -1;
4420
4421         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4422                 u8 tmp;
4423
4424                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4425                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4426                         return -EINVAL;
4427
4428                 params.support_p2p_ps = tmp;
4429         } else {
4430                 params.support_p2p_ps = -1;
4431         }
4432
4433         if (!info->attrs[NL80211_ATTR_MAC])
4434                 return -EINVAL;
4435
4436         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4437
4438         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4439                 params.supported_rates =
4440                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4441                 params.supported_rates_len =
4442                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4443         }
4444
4445         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4446                 params.capability =
4447                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4448                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4449         }
4450
4451         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4452                 params.ext_capab =
4453                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4454                 params.ext_capab_len =
4455                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4456         }
4457
4458         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4459                 return -EINVAL;
4460
4461         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4462                 params.plink_action =
4463                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4464                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4465                         return -EINVAL;
4466         }
4467
4468         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4469                 params.plink_state =
4470                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4471                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4472                         return -EINVAL;
4473                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4474                         params.peer_aid = nla_get_u16(
4475                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4476                         if (params.peer_aid > IEEE80211_MAX_AID)
4477                                 return -EINVAL;
4478                 }
4479                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4480         }
4481
4482         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4483                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4484                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4485
4486                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4487                     pm > NL80211_MESH_POWER_MAX)
4488                         return -EINVAL;
4489
4490                 params.local_pm = pm;
4491         }
4492
4493         /* Include parameters for TDLS peer (will check later) */
4494         err = nl80211_set_station_tdls(info, &params);
4495         if (err)
4496                 return err;
4497
4498         params.vlan = get_vlan(info, rdev);
4499         if (IS_ERR(params.vlan))
4500                 return PTR_ERR(params.vlan);
4501
4502         switch (dev->ieee80211_ptr->iftype) {
4503         case NL80211_IFTYPE_AP:
4504         case NL80211_IFTYPE_AP_VLAN:
4505         case NL80211_IFTYPE_P2P_GO:
4506         case NL80211_IFTYPE_P2P_CLIENT:
4507         case NL80211_IFTYPE_STATION:
4508         case NL80211_IFTYPE_ADHOC:
4509         case NL80211_IFTYPE_MESH_POINT:
4510                 break;
4511         default:
4512                 err = -EOPNOTSUPP;
4513                 goto out_put_vlan;
4514         }
4515
4516         /* driver will call cfg80211_check_station_change() */
4517         err = rdev_change_station(rdev, dev, mac_addr, &params);
4518
4519  out_put_vlan:
4520         if (params.vlan)
4521                 dev_put(params.vlan);
4522
4523         return err;
4524 }
4525
4526 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4527 {
4528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4529         int err;
4530         struct net_device *dev = info->user_ptr[1];
4531         struct station_parameters params;
4532         u8 *mac_addr = NULL;
4533         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4534                          BIT(NL80211_STA_FLAG_ASSOCIATED);
4535
4536         memset(&params, 0, sizeof(params));
4537
4538         if (!rdev->ops->add_station)
4539                 return -EOPNOTSUPP;
4540
4541         if (!info->attrs[NL80211_ATTR_MAC])
4542                 return -EINVAL;
4543
4544         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4545                 return -EINVAL;
4546
4547         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4548                 return -EINVAL;
4549
4550         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4551             !info->attrs[NL80211_ATTR_PEER_AID])
4552                 return -EINVAL;
4553
4554         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4555         params.supported_rates =
4556                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4557         params.supported_rates_len =
4558                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4559         params.listen_interval =
4560                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4561
4562         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4563                 u8 tmp;
4564
4565                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4566                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4567                         return -EINVAL;
4568
4569                 params.support_p2p_ps = tmp;
4570         } else {
4571                 /*
4572                  * if not specified, assume it's supported for P2P GO interface,
4573                  * and is NOT supported for AP interface
4574                  */
4575                 params.support_p2p_ps =
4576                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4577         }
4578
4579         if (info->attrs[NL80211_ATTR_PEER_AID])
4580                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4581         else
4582                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4583         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4584                 return -EINVAL;
4585
4586         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4587                 params.capability =
4588                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4589                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4590         }
4591
4592         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4593                 params.ext_capab =
4594                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4595                 params.ext_capab_len =
4596                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4597         }
4598
4599         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4600                 params.ht_capa =
4601                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4602
4603         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4604                 params.vht_capa =
4605                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4606
4607         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4608                 params.opmode_notif_used = true;
4609                 params.opmode_notif =
4610                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4611         }
4612
4613         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4614                 params.plink_action =
4615                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4616                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4617                         return -EINVAL;
4618         }
4619
4620         err = nl80211_parse_sta_channel_info(info, &params);
4621         if (err)
4622                 return err;
4623
4624         err = nl80211_parse_sta_wme(info, &params);
4625         if (err)
4626                 return err;
4627
4628         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4629                 return -EINVAL;
4630
4631         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4632          * as userspace might just pass through the capabilities from the IEs
4633          * directly, rather than enforcing this restriction and returning an
4634          * error in this case.
4635          */
4636         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4637                 params.ht_capa = NULL;
4638                 params.vht_capa = NULL;
4639         }
4640
4641         /* When you run into this, adjust the code below for the new flag */
4642         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4643
4644         switch (dev->ieee80211_ptr->iftype) {
4645         case NL80211_IFTYPE_AP:
4646         case NL80211_IFTYPE_AP_VLAN:
4647         case NL80211_IFTYPE_P2P_GO:
4648                 /* ignore WME attributes if iface/sta is not capable */
4649                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4650                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4651                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4652
4653                 /* TDLS peers cannot be added */
4654                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4655                     info->attrs[NL80211_ATTR_PEER_AID])
4656                         return -EINVAL;
4657                 /* but don't bother the driver with it */
4658                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4659
4660                 /* allow authenticated/associated only if driver handles it */
4661                 if (!(rdev->wiphy.features &
4662                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4663                     params.sta_flags_mask & auth_assoc)
4664                         return -EINVAL;
4665
4666                 /* Older userspace, or userspace wanting to be compatible with
4667                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4668                  * and assoc flags in the mask, but assumes the station will be
4669                  * added as associated anyway since this was the required driver
4670                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4671                  * introduced.
4672                  * In order to not bother drivers with this quirk in the API
4673                  * set the flags in both the mask and set for new stations in
4674                  * this case.
4675                  */
4676                 if (!(params.sta_flags_mask & auth_assoc)) {
4677                         params.sta_flags_mask |= auth_assoc;
4678                         params.sta_flags_set |= auth_assoc;
4679                 }
4680
4681                 /* must be last in here for error handling */
4682                 params.vlan = get_vlan(info, rdev);
4683                 if (IS_ERR(params.vlan))
4684                         return PTR_ERR(params.vlan);
4685                 break;
4686         case NL80211_IFTYPE_MESH_POINT:
4687                 /* ignore uAPSD data */
4688                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4689
4690                 /* associated is disallowed */
4691                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4692                         return -EINVAL;
4693                 /* TDLS peers cannot be added */
4694                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4695                     info->attrs[NL80211_ATTR_PEER_AID])
4696                         return -EINVAL;
4697                 break;
4698         case NL80211_IFTYPE_STATION:
4699         case NL80211_IFTYPE_P2P_CLIENT:
4700                 /* ignore uAPSD data */
4701                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4702
4703                 /* these are disallowed */
4704                 if (params.sta_flags_mask &
4705                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4706                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4707                         return -EINVAL;
4708                 /* Only TDLS peers can be added */
4709                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4710                         return -EINVAL;
4711                 /* Can only add if TDLS ... */
4712                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4713                         return -EOPNOTSUPP;
4714                 /* ... with external setup is supported */
4715                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4716                         return -EOPNOTSUPP;
4717                 /*
4718                  * Older wpa_supplicant versions always mark the TDLS peer
4719                  * as authorized, but it shouldn't yet be.
4720                  */
4721                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4722                 break;
4723         default:
4724                 return -EOPNOTSUPP;
4725         }
4726
4727         /* be aware of params.vlan when changing code here */
4728
4729         err = rdev_add_station(rdev, dev, mac_addr, &params);
4730
4731         if (params.vlan)
4732                 dev_put(params.vlan);
4733         return err;
4734 }
4735
4736 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4737 {
4738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4739         struct net_device *dev = info->user_ptr[1];
4740         struct station_del_parameters params;
4741
4742         memset(&params, 0, sizeof(params));
4743
4744         if (info->attrs[NL80211_ATTR_MAC])
4745                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4746
4747         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4748             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4749             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4750             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4751                 return -EINVAL;
4752
4753         if (!rdev->ops->del_station)
4754                 return -EOPNOTSUPP;
4755
4756         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4757                 params.subtype =
4758                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4759                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4760                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4761                         return -EINVAL;
4762         } else {
4763                 /* Default to Deauthentication frame */
4764                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4765         }
4766
4767         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4768                 params.reason_code =
4769                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4770                 if (params.reason_code == 0)
4771                         return -EINVAL; /* 0 is reserved */
4772         } else {
4773                 /* Default to reason code 2 */
4774                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4775         }
4776
4777         return rdev_del_station(rdev, dev, &params);
4778 }
4779
4780 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4781                                 int flags, struct net_device *dev,
4782                                 u8 *dst, u8 *next_hop,
4783                                 struct mpath_info *pinfo)
4784 {
4785         void *hdr;
4786         struct nlattr *pinfoattr;
4787
4788         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4789         if (!hdr)
4790                 return -1;
4791
4792         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4793             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4794             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4795             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4796                 goto nla_put_failure;
4797
4798         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4799         if (!pinfoattr)
4800                 goto nla_put_failure;
4801         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4802             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4803                         pinfo->frame_qlen))
4804                 goto nla_put_failure;
4805         if (((pinfo->filled & MPATH_INFO_SN) &&
4806              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4807             ((pinfo->filled & MPATH_INFO_METRIC) &&
4808              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4809                          pinfo->metric)) ||
4810             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4811              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4812                          pinfo->exptime)) ||
4813             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4814              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4815                         pinfo->flags)) ||
4816             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4817              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4818                          pinfo->discovery_timeout)) ||
4819             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4820              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4821                         pinfo->discovery_retries)))
4822                 goto nla_put_failure;
4823
4824         nla_nest_end(msg, pinfoattr);
4825
4826         genlmsg_end(msg, hdr);
4827         return 0;
4828
4829  nla_put_failure:
4830         genlmsg_cancel(msg, hdr);
4831         return -EMSGSIZE;
4832 }
4833
4834 static int nl80211_dump_mpath(struct sk_buff *skb,
4835                               struct netlink_callback *cb)
4836 {
4837         struct mpath_info pinfo;
4838         struct cfg80211_registered_device *rdev;
4839         struct wireless_dev *wdev;
4840         u8 dst[ETH_ALEN];
4841         u8 next_hop[ETH_ALEN];
4842         int path_idx = cb->args[2];
4843         int err;
4844
4845         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4846         if (err)
4847                 return err;
4848
4849         if (!rdev->ops->dump_mpath) {
4850                 err = -EOPNOTSUPP;
4851                 goto out_err;
4852         }
4853
4854         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4855                 err = -EOPNOTSUPP;
4856                 goto out_err;
4857         }
4858
4859         while (1) {
4860                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4861                                       next_hop, &pinfo);
4862                 if (err == -ENOENT)
4863                         break;
4864                 if (err)
4865                         goto out_err;
4866
4867                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4868                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4869                                        wdev->netdev, dst, next_hop,
4870                                        &pinfo) < 0)
4871                         goto out;
4872
4873                 path_idx++;
4874         }
4875
4876  out:
4877         cb->args[2] = path_idx;
4878         err = skb->len;
4879  out_err:
4880         nl80211_finish_wdev_dump(rdev);
4881         return err;
4882 }
4883
4884 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4885 {
4886         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4887         int err;
4888         struct net_device *dev = info->user_ptr[1];
4889         struct mpath_info pinfo;
4890         struct sk_buff *msg;
4891         u8 *dst = NULL;
4892         u8 next_hop[ETH_ALEN];
4893
4894         memset(&pinfo, 0, sizeof(pinfo));
4895
4896         if (!info->attrs[NL80211_ATTR_MAC])
4897                 return -EINVAL;
4898
4899         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4900
4901         if (!rdev->ops->get_mpath)
4902                 return -EOPNOTSUPP;
4903
4904         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4905                 return -EOPNOTSUPP;
4906
4907         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4908         if (err)
4909                 return err;
4910
4911         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4912         if (!msg)
4913                 return -ENOMEM;
4914
4915         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4916                                  dev, dst, next_hop, &pinfo) < 0) {
4917                 nlmsg_free(msg);
4918                 return -ENOBUFS;
4919         }
4920
4921         return genlmsg_reply(msg, info);
4922 }
4923
4924 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4925 {
4926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4927         struct net_device *dev = info->user_ptr[1];
4928         u8 *dst = NULL;
4929         u8 *next_hop = NULL;
4930
4931         if (!info->attrs[NL80211_ATTR_MAC])
4932                 return -EINVAL;
4933
4934         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4935                 return -EINVAL;
4936
4937         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4938         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4939
4940         if (!rdev->ops->change_mpath)
4941                 return -EOPNOTSUPP;
4942
4943         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4944                 return -EOPNOTSUPP;
4945
4946         return rdev_change_mpath(rdev, dev, dst, next_hop);
4947 }
4948
4949 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4950 {
4951         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4952         struct net_device *dev = info->user_ptr[1];
4953         u8 *dst = NULL;
4954         u8 *next_hop = NULL;
4955
4956         if (!info->attrs[NL80211_ATTR_MAC])
4957                 return -EINVAL;
4958
4959         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4960                 return -EINVAL;
4961
4962         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4963         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4964
4965         if (!rdev->ops->add_mpath)
4966                 return -EOPNOTSUPP;
4967
4968         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4969                 return -EOPNOTSUPP;
4970
4971         return rdev_add_mpath(rdev, dev, dst, next_hop);
4972 }
4973
4974 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4975 {
4976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4977         struct net_device *dev = info->user_ptr[1];
4978         u8 *dst = NULL;
4979
4980         if (info->attrs[NL80211_ATTR_MAC])
4981                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4982
4983         if (!rdev->ops->del_mpath)
4984                 return -EOPNOTSUPP;
4985
4986         return rdev_del_mpath(rdev, dev, dst);
4987 }
4988
4989 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4990 {
4991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4992         int err;
4993         struct net_device *dev = info->user_ptr[1];
4994         struct mpath_info pinfo;
4995         struct sk_buff *msg;
4996         u8 *dst = NULL;
4997         u8 mpp[ETH_ALEN];
4998
4999         memset(&pinfo, 0, sizeof(pinfo));
5000
5001         if (!info->attrs[NL80211_ATTR_MAC])
5002                 return -EINVAL;
5003
5004         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5005
5006         if (!rdev->ops->get_mpp)
5007                 return -EOPNOTSUPP;
5008
5009         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5010                 return -EOPNOTSUPP;
5011
5012         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5013         if (err)
5014                 return err;
5015
5016         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5017         if (!msg)
5018                 return -ENOMEM;
5019
5020         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5021                                dev, dst, mpp, &pinfo) < 0) {
5022                 nlmsg_free(msg);
5023                 return -ENOBUFS;
5024         }
5025
5026         return genlmsg_reply(msg, info);
5027 }
5028
5029 static int nl80211_dump_mpp(struct sk_buff *skb,
5030                             struct netlink_callback *cb)
5031 {
5032         struct mpath_info pinfo;
5033         struct cfg80211_registered_device *rdev;
5034         struct wireless_dev *wdev;
5035         u8 dst[ETH_ALEN];
5036         u8 mpp[ETH_ALEN];
5037         int path_idx = cb->args[2];
5038         int err;
5039
5040         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5041         if (err)
5042                 return err;
5043
5044         if (!rdev->ops->dump_mpp) {
5045                 err = -EOPNOTSUPP;
5046                 goto out_err;
5047         }
5048
5049         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5050                 err = -EOPNOTSUPP;
5051                 goto out_err;
5052         }
5053
5054         while (1) {
5055                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5056                                     mpp, &pinfo);
5057                 if (err == -ENOENT)
5058                         break;
5059                 if (err)
5060                         goto out_err;
5061
5062                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5063                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5064                                        wdev->netdev, dst, mpp,
5065                                        &pinfo) < 0)
5066                         goto out;
5067
5068                 path_idx++;
5069         }
5070
5071  out:
5072         cb->args[2] = path_idx;
5073         err = skb->len;
5074  out_err:
5075         nl80211_finish_wdev_dump(rdev);
5076         return err;
5077 }
5078
5079 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5080 {
5081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5082         struct net_device *dev = info->user_ptr[1];
5083         struct wireless_dev *wdev = dev->ieee80211_ptr;
5084         struct bss_parameters params;
5085         int err;
5086
5087         memset(&params, 0, sizeof(params));
5088         /* default to not changing parameters */
5089         params.use_cts_prot = -1;
5090         params.use_short_preamble = -1;
5091         params.use_short_slot_time = -1;
5092         params.ap_isolate = -1;
5093         params.ht_opmode = -1;
5094         params.p2p_ctwindow = -1;
5095         params.p2p_opp_ps = -1;
5096
5097         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5098                 params.use_cts_prot =
5099                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5100         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5101                 params.use_short_preamble =
5102                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5103         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5104                 params.use_short_slot_time =
5105                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5106         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5107                 params.basic_rates =
5108                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5109                 params.basic_rates_len =
5110                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5111         }
5112         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5113                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5114         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5115                 params.ht_opmode =
5116                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5117
5118         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5119                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5120                         return -EINVAL;
5121                 params.p2p_ctwindow =
5122                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5123                 if (params.p2p_ctwindow < 0)
5124                         return -EINVAL;
5125                 if (params.p2p_ctwindow != 0 &&
5126                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5127                         return -EINVAL;
5128         }
5129
5130         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5131                 u8 tmp;
5132
5133                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5134                         return -EINVAL;
5135                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5136                 if (tmp > 1)
5137                         return -EINVAL;
5138                 params.p2p_opp_ps = tmp;
5139                 if (params.p2p_opp_ps &&
5140                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5141                         return -EINVAL;
5142         }
5143
5144         if (!rdev->ops->change_bss)
5145                 return -EOPNOTSUPP;
5146
5147         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5148             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5149                 return -EOPNOTSUPP;
5150
5151         wdev_lock(wdev);
5152         err = rdev_change_bss(rdev, dev, &params);
5153         wdev_unlock(wdev);
5154
5155         return err;
5156 }
5157
5158 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5159 {
5160         char *data = NULL;
5161         bool is_indoor;
5162         enum nl80211_user_reg_hint_type user_reg_hint_type;
5163         u32 owner_nlportid;
5164
5165         /*
5166          * You should only get this when cfg80211 hasn't yet initialized
5167          * completely when built-in to the kernel right between the time
5168          * window between nl80211_init() and regulatory_init(), if that is
5169          * even possible.
5170          */
5171         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5172                 return -EINPROGRESS;
5173
5174         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5175                 user_reg_hint_type =
5176                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5177         else
5178                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5179
5180         switch (user_reg_hint_type) {
5181         case NL80211_USER_REG_HINT_USER:
5182         case NL80211_USER_REG_HINT_CELL_BASE:
5183                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5184                         return -EINVAL;
5185
5186                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5187                 return regulatory_hint_user(data, user_reg_hint_type);
5188         case NL80211_USER_REG_HINT_INDOOR:
5189                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5190                         owner_nlportid = info->snd_portid;
5191                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5192                 } else {
5193                         owner_nlportid = 0;
5194                         is_indoor = true;
5195                 }
5196
5197                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5198         default:
5199                 return -EINVAL;
5200         }
5201 }
5202
5203 static int nl80211_get_mesh_config(struct sk_buff *skb,
5204                                    struct genl_info *info)
5205 {
5206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5207         struct net_device *dev = info->user_ptr[1];
5208         struct wireless_dev *wdev = dev->ieee80211_ptr;
5209         struct mesh_config cur_params;
5210         int err = 0;
5211         void *hdr;
5212         struct nlattr *pinfoattr;
5213         struct sk_buff *msg;
5214
5215         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5216                 return -EOPNOTSUPP;
5217
5218         if (!rdev->ops->get_mesh_config)
5219                 return -EOPNOTSUPP;
5220
5221         wdev_lock(wdev);
5222         /* If not connected, get default parameters */
5223         if (!wdev->mesh_id_len)
5224                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5225         else
5226                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5227         wdev_unlock(wdev);
5228
5229         if (err)
5230                 return err;
5231
5232         /* Draw up a netlink message to send back */
5233         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5234         if (!msg)
5235                 return -ENOMEM;
5236         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5237                              NL80211_CMD_GET_MESH_CONFIG);
5238         if (!hdr)
5239                 goto out;
5240         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5241         if (!pinfoattr)
5242                 goto nla_put_failure;
5243         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5244             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5245                         cur_params.dot11MeshRetryTimeout) ||
5246             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5247                         cur_params.dot11MeshConfirmTimeout) ||
5248             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5249                         cur_params.dot11MeshHoldingTimeout) ||
5250             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5251                         cur_params.dot11MeshMaxPeerLinks) ||
5252             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5253                        cur_params.dot11MeshMaxRetries) ||
5254             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5255                        cur_params.dot11MeshTTL) ||
5256             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5257                        cur_params.element_ttl) ||
5258             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5259                        cur_params.auto_open_plinks) ||
5260             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5261                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5262             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5263                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5264             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5265                         cur_params.path_refresh_time) ||
5266             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5267                         cur_params.min_discovery_timeout) ||
5268             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5269                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5270             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5271                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5272             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5273                         cur_params.dot11MeshHWMPperrMinInterval) ||
5274             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5275                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5276             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5277                        cur_params.dot11MeshHWMPRootMode) ||
5278             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5279                         cur_params.dot11MeshHWMPRannInterval) ||
5280             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5281                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5282             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5283                        cur_params.dot11MeshForwarding) ||
5284             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5285                         cur_params.rssi_threshold) ||
5286             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5287                         cur_params.ht_opmode) ||
5288             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5289                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5290             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5291                         cur_params.dot11MeshHWMProotInterval) ||
5292             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5293                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5294             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5295                         cur_params.power_mode) ||
5296             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5297                         cur_params.dot11MeshAwakeWindowDuration) ||
5298             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5299                         cur_params.plink_timeout))
5300                 goto nla_put_failure;
5301         nla_nest_end(msg, pinfoattr);
5302         genlmsg_end(msg, hdr);
5303         return genlmsg_reply(msg, info);
5304
5305  nla_put_failure:
5306         genlmsg_cancel(msg, hdr);
5307  out:
5308         nlmsg_free(msg);
5309         return -ENOBUFS;
5310 }
5311
5312 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5313         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5314         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5315         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5316         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5317         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5318         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5319         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5320         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5321         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5322         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5323         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5324         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5325         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5326         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5327         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5328         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5329         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5330         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5331         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5332         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5333         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5334         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5335         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5336         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5337         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5338         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5339         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5340         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5341 };
5342
5343 static const struct nla_policy
5344         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5345         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5346         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5347         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5348         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5349         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5350         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5351         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5352                                     .len = IEEE80211_MAX_DATA_LEN },
5353         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5354 };
5355
5356 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5357 {
5358         u8 val = nla_get_u8(nla);
5359         if (val < min || val > max)
5360                 return -EINVAL;
5361         *out = val;
5362         return 0;
5363 }
5364
5365 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5366 {
5367         u8 val = nla_get_u8(nla);
5368         if (val < min || val > max)
5369                 return -EINVAL;
5370         *out = val;
5371         return 0;
5372 }
5373
5374 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5375 {
5376         u16 val = nla_get_u16(nla);
5377         if (val < min || val > max)
5378                 return -EINVAL;
5379         *out = val;
5380         return 0;
5381 }
5382
5383 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5384 {
5385         u32 val = nla_get_u32(nla);
5386         if (val < min || val > max)
5387                 return -EINVAL;
5388         *out = val;
5389         return 0;
5390 }
5391
5392 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5393 {
5394         s32 val = nla_get_s32(nla);
5395         if (val < min || val > max)
5396                 return -EINVAL;
5397         *out = val;
5398         return 0;
5399 }
5400
5401 static int nl80211_check_power_mode(const struct nlattr *nla,
5402                                     enum nl80211_mesh_power_mode min,
5403                                     enum nl80211_mesh_power_mode max,
5404                                     enum nl80211_mesh_power_mode *out)
5405 {
5406         u32 val = nla_get_u32(nla);
5407         if (val < min || val > max)
5408                 return -EINVAL;
5409         *out = val;
5410         return 0;
5411 }
5412
5413 static int nl80211_parse_mesh_config(struct genl_info *info,
5414                                      struct mesh_config *cfg,
5415                                      u32 *mask_out)
5416 {
5417         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5418         u32 mask = 0;
5419         u16 ht_opmode;
5420
5421 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5422 do {                                                                        \
5423         if (tb[attr]) {                                                     \
5424                 if (fn(tb[attr], min, max, &cfg->param))                    \
5425                         return -EINVAL;                                     \
5426                 mask |= (1 << (attr - 1));                                  \
5427         }                                                                   \
5428 } while (0)
5429
5430         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5431                 return -EINVAL;
5432         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5433                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5434                              nl80211_meshconf_params_policy))
5435                 return -EINVAL;
5436
5437         /* This makes sure that there aren't more than 32 mesh config
5438          * parameters (otherwise our bitfield scheme would not work.) */
5439         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5440
5441         /* Fill in the params struct */
5442         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5443                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5444                                   nl80211_check_u16);
5445         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5446                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5447                                   nl80211_check_u16);
5448         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5449                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5450                                   nl80211_check_u16);
5451         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5452                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5453                                   nl80211_check_u16);
5454         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5455                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5456                                   nl80211_check_u8);
5457         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5458                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5459         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5460                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5461                                   nl80211_check_u8);
5462         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5463                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5464                                   nl80211_check_bool);
5465         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5466                                   1, 255, mask,
5467                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5468                                   nl80211_check_u32);
5469         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5470                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5471                                   nl80211_check_u8);
5472         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5473                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5474                                   nl80211_check_u32);
5475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5476                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5477                                   nl80211_check_u16);
5478         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5479                                   1, 65535, mask,
5480                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5481                                   nl80211_check_u32);
5482         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5483                                   1, 65535, mask,
5484                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5485                                   nl80211_check_u16);
5486         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5487                                   1, 65535, mask,
5488                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5489                                   nl80211_check_u16);
5490         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5491                                   dot11MeshHWMPnetDiameterTraversalTime,
5492                                   1, 65535, mask,
5493                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5494                                   nl80211_check_u16);
5495         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5496                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5497                                   nl80211_check_u8);
5498         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5499                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5500                                   nl80211_check_u16);
5501         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5502                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5503                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5504                                   nl80211_check_bool);
5505         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5506                                   mask, NL80211_MESHCONF_FORWARDING,
5507                                   nl80211_check_bool);
5508         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5509                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5510                                   nl80211_check_s32);
5511         /*
5512          * Check HT operation mode based on
5513          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5514          */
5515         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5516                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5517
5518                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5519                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5520                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5521                         return -EINVAL;
5522
5523                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5524                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5525                         return -EINVAL;
5526
5527                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5528                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5529                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5530                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5531                                 return -EINVAL;
5532                         break;
5533                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5534                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5535                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5536                                 return -EINVAL;
5537                         break;
5538                 }
5539                 cfg->ht_opmode = ht_opmode;
5540         }
5541         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5542                                   1, 65535, mask,
5543                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5544                                   nl80211_check_u32);
5545         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5546                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5547                                   nl80211_check_u16);
5548         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5549                                   dot11MeshHWMPconfirmationInterval,
5550                                   1, 65535, mask,
5551                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5552                                   nl80211_check_u16);
5553         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5554                                   NL80211_MESH_POWER_ACTIVE,
5555                                   NL80211_MESH_POWER_MAX,
5556                                   mask, NL80211_MESHCONF_POWER_MODE,
5557                                   nl80211_check_power_mode);
5558         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5559                                   0, 65535, mask,
5560                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5561         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5562                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5563                                   nl80211_check_u32);
5564         if (mask_out)
5565                 *mask_out = mask;
5566
5567         return 0;
5568
5569 #undef FILL_IN_MESH_PARAM_IF_SET
5570 }
5571
5572 static int nl80211_parse_mesh_setup(struct genl_info *info,
5573                                      struct mesh_setup *setup)
5574 {
5575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5576         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5577
5578         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5579                 return -EINVAL;
5580         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5581                              info->attrs[NL80211_ATTR_MESH_SETUP],
5582                              nl80211_mesh_setup_params_policy))
5583                 return -EINVAL;
5584
5585         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5586                 setup->sync_method =
5587                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5588                  IEEE80211_SYNC_METHOD_VENDOR :
5589                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5590
5591         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5592                 setup->path_sel_proto =
5593                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5594                  IEEE80211_PATH_PROTOCOL_VENDOR :
5595                  IEEE80211_PATH_PROTOCOL_HWMP;
5596
5597         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5598                 setup->path_metric =
5599                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5600                  IEEE80211_PATH_METRIC_VENDOR :
5601                  IEEE80211_PATH_METRIC_AIRTIME;
5602
5603         if (tb[NL80211_MESH_SETUP_IE]) {
5604                 struct nlattr *ieattr =
5605                         tb[NL80211_MESH_SETUP_IE];
5606                 if (!is_valid_ie_attr(ieattr))
5607                         return -EINVAL;
5608                 setup->ie = nla_data(ieattr);
5609                 setup->ie_len = nla_len(ieattr);
5610         }
5611         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5612             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5613                 return -EINVAL;
5614         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5615         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5616         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5617         if (setup->is_secure)
5618                 setup->user_mpm = true;
5619
5620         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5621                 if (!setup->user_mpm)
5622                         return -EINVAL;
5623                 setup->auth_id =
5624                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5625         }
5626
5627         return 0;
5628 }
5629
5630 static int nl80211_update_mesh_config(struct sk_buff *skb,
5631                                       struct genl_info *info)
5632 {
5633         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5634         struct net_device *dev = info->user_ptr[1];
5635         struct wireless_dev *wdev = dev->ieee80211_ptr;
5636         struct mesh_config cfg;
5637         u32 mask;
5638         int err;
5639
5640         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5641                 return -EOPNOTSUPP;
5642
5643         if (!rdev->ops->update_mesh_config)
5644                 return -EOPNOTSUPP;
5645
5646         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5647         if (err)
5648                 return err;
5649
5650         wdev_lock(wdev);
5651         if (!wdev->mesh_id_len)
5652                 err = -ENOLINK;
5653
5654         if (!err)
5655                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5656
5657         wdev_unlock(wdev);
5658
5659         return err;
5660 }
5661
5662 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5663                               struct sk_buff *msg)
5664 {
5665         struct nlattr *nl_reg_rules;
5666         unsigned int i;
5667
5668         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5669             (regdom->dfs_region &&
5670              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5671                 goto nla_put_failure;
5672
5673         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5674         if (!nl_reg_rules)
5675                 goto nla_put_failure;
5676
5677         for (i = 0; i < regdom->n_reg_rules; i++) {
5678                 struct nlattr *nl_reg_rule;
5679                 const struct ieee80211_reg_rule *reg_rule;
5680                 const struct ieee80211_freq_range *freq_range;
5681                 const struct ieee80211_power_rule *power_rule;
5682                 unsigned int max_bandwidth_khz;
5683
5684                 reg_rule = &regdom->reg_rules[i];
5685                 freq_range = &reg_rule->freq_range;
5686                 power_rule = &reg_rule->power_rule;
5687
5688                 nl_reg_rule = nla_nest_start(msg, i);
5689                 if (!nl_reg_rule)
5690                         goto nla_put_failure;
5691
5692                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5693                 if (!max_bandwidth_khz)
5694                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5695                                                                   reg_rule);
5696
5697                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5698                                 reg_rule->flags) ||
5699                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5700                                 freq_range->start_freq_khz) ||
5701                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5702                                 freq_range->end_freq_khz) ||
5703                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5704                                 max_bandwidth_khz) ||
5705                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5706                                 power_rule->max_antenna_gain) ||
5707                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5708                                 power_rule->max_eirp) ||
5709                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5710                                 reg_rule->dfs_cac_ms))
5711                         goto nla_put_failure;
5712
5713                 nla_nest_end(msg, nl_reg_rule);
5714         }
5715
5716         nla_nest_end(msg, nl_reg_rules);
5717         return 0;
5718
5719 nla_put_failure:
5720         return -EMSGSIZE;
5721 }
5722
5723 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5724 {
5725         const struct ieee80211_regdomain *regdom = NULL;
5726         struct cfg80211_registered_device *rdev;
5727         struct wiphy *wiphy = NULL;
5728         struct sk_buff *msg;
5729         void *hdr;
5730
5731         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5732         if (!msg)
5733                 return -ENOBUFS;
5734
5735         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5736                              NL80211_CMD_GET_REG);
5737         if (!hdr)
5738                 goto put_failure;
5739
5740         if (info->attrs[NL80211_ATTR_WIPHY]) {
5741                 bool self_managed;
5742
5743                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5744                 if (IS_ERR(rdev)) {
5745                         nlmsg_free(msg);
5746                         return PTR_ERR(rdev);
5747                 }
5748
5749                 wiphy = &rdev->wiphy;
5750                 self_managed = wiphy->regulatory_flags &
5751                                REGULATORY_WIPHY_SELF_MANAGED;
5752                 regdom = get_wiphy_regdom(wiphy);
5753
5754                 /* a self-managed-reg device must have a private regdom */
5755                 if (WARN_ON(!regdom && self_managed)) {
5756                         nlmsg_free(msg);
5757                         return -EINVAL;
5758                 }
5759
5760                 if (regdom &&
5761                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5762                         goto nla_put_failure;
5763         }
5764
5765         if (!wiphy && reg_last_request_cell_base() &&
5766             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5767                         NL80211_USER_REG_HINT_CELL_BASE))
5768                 goto nla_put_failure;
5769
5770         rcu_read_lock();
5771
5772         if (!regdom)
5773                 regdom = rcu_dereference(cfg80211_regdomain);
5774
5775         if (nl80211_put_regdom(regdom, msg))
5776                 goto nla_put_failure_rcu;
5777
5778         rcu_read_unlock();
5779
5780         genlmsg_end(msg, hdr);
5781         return genlmsg_reply(msg, info);
5782
5783 nla_put_failure_rcu:
5784         rcu_read_unlock();
5785 nla_put_failure:
5786         genlmsg_cancel(msg, hdr);
5787 put_failure:
5788         nlmsg_free(msg);
5789         return -EMSGSIZE;
5790 }
5791
5792 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5793                                u32 seq, int flags, struct wiphy *wiphy,
5794                                const struct ieee80211_regdomain *regdom)
5795 {
5796         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5797                                    NL80211_CMD_GET_REG);
5798
5799         if (!hdr)
5800                 return -1;
5801
5802         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5803
5804         if (nl80211_put_regdom(regdom, msg))
5805                 goto nla_put_failure;
5806
5807         if (!wiphy && reg_last_request_cell_base() &&
5808             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5809                         NL80211_USER_REG_HINT_CELL_BASE))
5810                 goto nla_put_failure;
5811
5812         if (wiphy &&
5813             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5814                 goto nla_put_failure;
5815
5816         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5817             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5818                 goto nla_put_failure;
5819
5820         genlmsg_end(msg, hdr);
5821         return 0;
5822
5823 nla_put_failure:
5824         genlmsg_cancel(msg, hdr);
5825         return -EMSGSIZE;
5826 }
5827
5828 static int nl80211_get_reg_dump(struct sk_buff *skb,
5829                                 struct netlink_callback *cb)
5830 {
5831         const struct ieee80211_regdomain *regdom = NULL;
5832         struct cfg80211_registered_device *rdev;
5833         int err, reg_idx, start = cb->args[2];
5834
5835         rtnl_lock();
5836
5837         if (cfg80211_regdomain && start == 0) {
5838                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5839                                           NLM_F_MULTI, NULL,
5840                                           rtnl_dereference(cfg80211_regdomain));
5841                 if (err < 0)
5842                         goto out_err;
5843         }
5844
5845         /* the global regdom is idx 0 */
5846         reg_idx = 1;
5847         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5848                 regdom = get_wiphy_regdom(&rdev->wiphy);
5849                 if (!regdom)
5850                         continue;
5851
5852                 if (++reg_idx <= start)
5853                         continue;
5854
5855                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5856                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5857                 if (err < 0) {
5858                         reg_idx--;
5859                         break;
5860                 }
5861         }
5862
5863         cb->args[2] = reg_idx;
5864         err = skb->len;
5865 out_err:
5866         rtnl_unlock();
5867         return err;
5868 }
5869
5870 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5871 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5872         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
5873         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
5874         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
5875         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
5876         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
5877         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
5878         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
5879 };
5880
5881 static int parse_reg_rule(struct nlattr *tb[],
5882         struct ieee80211_reg_rule *reg_rule)
5883 {
5884         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5885         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5886
5887         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5888                 return -EINVAL;
5889         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5890                 return -EINVAL;
5891         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5892                 return -EINVAL;
5893         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5894                 return -EINVAL;
5895         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5896                 return -EINVAL;
5897
5898         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5899
5900         freq_range->start_freq_khz =
5901                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5902         freq_range->end_freq_khz =
5903                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5904         freq_range->max_bandwidth_khz =
5905                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5906
5907         power_rule->max_eirp =
5908                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5909
5910         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5911                 power_rule->max_antenna_gain =
5912                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5913
5914         if (tb[NL80211_ATTR_DFS_CAC_TIME])
5915                 reg_rule->dfs_cac_ms =
5916                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5917
5918         return 0;
5919 }
5920
5921 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5922 {
5923         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5924         struct nlattr *nl_reg_rule;
5925         char *alpha2;
5926         int rem_reg_rules, r;
5927         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5928         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5929         struct ieee80211_regdomain *rd;
5930
5931         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5932                 return -EINVAL;
5933
5934         if (!info->attrs[NL80211_ATTR_REG_RULES])
5935                 return -EINVAL;
5936
5937         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5938
5939         if (info->attrs[NL80211_ATTR_DFS_REGION])
5940                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5941
5942         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5943                             rem_reg_rules) {
5944                 num_rules++;
5945                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5946                         return -EINVAL;
5947         }
5948
5949         if (!reg_is_valid_request(alpha2))
5950                 return -EINVAL;
5951
5952         size_of_regd = sizeof(struct ieee80211_regdomain) +
5953                        num_rules * sizeof(struct ieee80211_reg_rule);
5954
5955         rd = kzalloc(size_of_regd, GFP_KERNEL);
5956         if (!rd)
5957                 return -ENOMEM;
5958
5959         rd->n_reg_rules = num_rules;
5960         rd->alpha2[0] = alpha2[0];
5961         rd->alpha2[1] = alpha2[1];
5962
5963         /*
5964          * Disable DFS master mode if the DFS region was
5965          * not supported or known on this kernel.
5966          */
5967         if (reg_supported_dfs_region(dfs_region))
5968                 rd->dfs_region = dfs_region;
5969
5970         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5971                             rem_reg_rules) {
5972                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5973                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5974                               reg_rule_policy);
5975                 if (r)
5976                         goto bad_reg;
5977                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5978                 if (r)
5979                         goto bad_reg;
5980
5981                 rule_idx++;
5982
5983                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5984                         r = -EINVAL;
5985                         goto bad_reg;
5986                 }
5987         }
5988
5989         /* set_regdom takes ownership of rd */
5990         return set_regdom(rd, REGD_SOURCE_CRDA);
5991  bad_reg:
5992         kfree(rd);
5993         return r;
5994 }
5995 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5996
5997 static int validate_scan_freqs(struct nlattr *freqs)
5998 {
5999         struct nlattr *attr1, *attr2;
6000         int n_channels = 0, tmp1, tmp2;
6001
6002         nla_for_each_nested(attr1, freqs, tmp1) {
6003                 n_channels++;
6004                 /*
6005                  * Some hardware has a limited channel list for
6006                  * scanning, and it is pretty much nonsensical
6007                  * to scan for a channel twice, so disallow that
6008                  * and don't require drivers to check that the
6009                  * channel list they get isn't longer than what
6010                  * they can scan, as long as they can scan all
6011                  * the channels they registered at once.
6012                  */
6013                 nla_for_each_nested(attr2, freqs, tmp2)
6014                         if (attr1 != attr2 &&
6015                             nla_get_u32(attr1) == nla_get_u32(attr2))
6016                                 return 0;
6017         }
6018
6019         return n_channels;
6020 }
6021
6022 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6023 {
6024         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6025 }
6026
6027 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6028                             struct cfg80211_bss_selection *bss_select)
6029 {
6030         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6031         struct nlattr *nest;
6032         int err;
6033         bool found = false;
6034         int i;
6035
6036         /* only process one nested attribute */
6037         nest = nla_data(nla);
6038         if (!nla_ok(nest, nla_len(nest)))
6039                 return -EINVAL;
6040
6041         err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
6042                         nla_len(nest), nl80211_bss_select_policy);
6043         if (err)
6044                 return err;
6045
6046         /* only one attribute may be given */
6047         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6048                 if (attr[i]) {
6049                         if (found)
6050                                 return -EINVAL;
6051                         found = true;
6052                 }
6053         }
6054
6055         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6056
6057         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6058                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6059
6060         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6061                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6062                 bss_select->param.band_pref =
6063                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6064                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6065                         return -EINVAL;
6066         }
6067
6068         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6069                 struct nl80211_bss_select_rssi_adjust *adj_param;
6070
6071                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6072                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6073                 bss_select->param.adjust.band = adj_param->band;
6074                 bss_select->param.adjust.delta = adj_param->delta;
6075                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6076                         return -EINVAL;
6077         }
6078
6079         /* user-space did not provide behaviour attribute */
6080         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6081                 return -EINVAL;
6082
6083         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6084                 return -EINVAL;
6085
6086         return 0;
6087 }
6088
6089 static int nl80211_parse_random_mac(struct nlattr **attrs,
6090                                     u8 *mac_addr, u8 *mac_addr_mask)
6091 {
6092         int i;
6093
6094         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6095                 eth_zero_addr(mac_addr);
6096                 eth_zero_addr(mac_addr_mask);
6097                 mac_addr[0] = 0x2;
6098                 mac_addr_mask[0] = 0x3;
6099
6100                 return 0;
6101         }
6102
6103         /* need both or none */
6104         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6105                 return -EINVAL;
6106
6107         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6108         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6109
6110         /* don't allow or configure an mcast address */
6111         if (!is_multicast_ether_addr(mac_addr_mask) ||
6112             is_multicast_ether_addr(mac_addr))
6113                 return -EINVAL;
6114
6115         /*
6116          * allow users to pass a MAC address that has bits set outside
6117          * of the mask, but don't bother drivers with having to deal
6118          * with such bits
6119          */
6120         for (i = 0; i < ETH_ALEN; i++)
6121                 mac_addr[i] &= mac_addr_mask[i];
6122
6123         return 0;
6124 }
6125
6126 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6127 {
6128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6129         struct wireless_dev *wdev = info->user_ptr[1];
6130         struct cfg80211_scan_request *request;
6131         struct nlattr *attr;
6132         struct wiphy *wiphy;
6133         int err, tmp, n_ssids = 0, n_channels, i;
6134         size_t ie_len;
6135
6136         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6137                 return -EINVAL;
6138
6139         wiphy = &rdev->wiphy;
6140
6141         if (!rdev->ops->scan)
6142                 return -EOPNOTSUPP;
6143
6144         if (rdev->scan_req || rdev->scan_msg) {
6145                 err = -EBUSY;
6146                 goto unlock;
6147         }
6148
6149         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6150                 n_channels = validate_scan_freqs(
6151                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6152                 if (!n_channels) {
6153                         err = -EINVAL;
6154                         goto unlock;
6155                 }
6156         } else {
6157                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6158         }
6159
6160         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6161                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6162                         n_ssids++;
6163
6164         if (n_ssids > wiphy->max_scan_ssids) {
6165                 err = -EINVAL;
6166                 goto unlock;
6167         }
6168
6169         if (info->attrs[NL80211_ATTR_IE])
6170                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6171         else
6172                 ie_len = 0;
6173
6174         if (ie_len > wiphy->max_scan_ie_len) {
6175                 err = -EINVAL;
6176                 goto unlock;
6177         }
6178
6179         request = kzalloc(sizeof(*request)
6180                         + sizeof(*request->ssids) * n_ssids
6181                         + sizeof(*request->channels) * n_channels
6182                         + ie_len, GFP_KERNEL);
6183         if (!request) {
6184                 err = -ENOMEM;
6185                 goto unlock;
6186         }
6187
6188         if (n_ssids)
6189                 request->ssids = (void *)&request->channels[n_channels];
6190         request->n_ssids = n_ssids;
6191         if (ie_len) {
6192                 if (n_ssids)
6193                         request->ie = (void *)(request->ssids + n_ssids);
6194                 else
6195                         request->ie = (void *)(request->channels + n_channels);
6196         }
6197
6198         i = 0;
6199         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6200                 /* user specified, bail out if channel not found */
6201                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6202                         struct ieee80211_channel *chan;
6203
6204                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6205
6206                         if (!chan) {
6207                                 err = -EINVAL;
6208                                 goto out_free;
6209                         }
6210
6211                         /* ignore disabled channels */
6212                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6213                                 continue;
6214
6215                         request->channels[i] = chan;
6216                         i++;
6217                 }
6218         } else {
6219                 enum nl80211_band band;
6220
6221                 /* all channels */
6222                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6223                         int j;
6224
6225                         if (!wiphy->bands[band])
6226                                 continue;
6227                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6228                                 struct ieee80211_channel *chan;
6229
6230                                 chan = &wiphy->bands[band]->channels[j];
6231
6232                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6233                                         continue;
6234
6235                                 request->channels[i] = chan;
6236                                 i++;
6237                         }
6238                 }
6239         }
6240
6241         if (!i) {
6242                 err = -EINVAL;
6243                 goto out_free;
6244         }
6245
6246         request->n_channels = i;
6247
6248         i = 0;
6249         if (n_ssids) {
6250                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6251                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6252                                 err = -EINVAL;
6253                                 goto out_free;
6254                         }
6255                         request->ssids[i].ssid_len = nla_len(attr);
6256                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6257                         i++;
6258                 }
6259         }
6260
6261         if (info->attrs[NL80211_ATTR_IE]) {
6262                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6263                 memcpy((void *)request->ie,
6264                        nla_data(info->attrs[NL80211_ATTR_IE]),
6265                        request->ie_len);
6266         }
6267
6268         for (i = 0; i < NUM_NL80211_BANDS; i++)
6269                 if (wiphy->bands[i])
6270                         request->rates[i] =
6271                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
6272
6273         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6274                 nla_for_each_nested(attr,
6275                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6276                                     tmp) {
6277                         enum nl80211_band band = nla_type(attr);
6278
6279                         if (band < 0 || band >= NUM_NL80211_BANDS) {
6280                                 err = -EINVAL;
6281                                 goto out_free;
6282                         }
6283
6284                         if (!wiphy->bands[band])
6285                                 continue;
6286
6287                         err = ieee80211_get_ratemask(wiphy->bands[band],
6288                                                      nla_data(attr),
6289                                                      nla_len(attr),
6290                                                      &request->rates[band]);
6291                         if (err)
6292                                 goto out_free;
6293                 }
6294         }
6295
6296         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6297                 if (!wiphy_ext_feature_isset(wiphy,
6298                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6299                         err = -EOPNOTSUPP;
6300                         goto out_free;
6301                 }
6302
6303                 request->duration =
6304                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6305                 request->duration_mandatory =
6306                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6307         }
6308
6309         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6310                 request->flags = nla_get_u32(
6311                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6312                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6313                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6314                         err = -EOPNOTSUPP;
6315                         goto out_free;
6316                 }
6317
6318                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6319                         if (!(wiphy->features &
6320                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6321                                 err = -EOPNOTSUPP;
6322                                 goto out_free;
6323                         }
6324
6325                         if (wdev->current_bss) {
6326                                 err = -EOPNOTSUPP;
6327                                 goto out_free;
6328                         }
6329
6330                         err = nl80211_parse_random_mac(info->attrs,
6331                                                        request->mac_addr,
6332                                                        request->mac_addr_mask);
6333                         if (err)
6334                                 goto out_free;
6335                 }
6336         }
6337
6338         request->no_cck =
6339                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6340
6341         if (info->attrs[NL80211_ATTR_MAC])
6342                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6343                        ETH_ALEN);
6344         else
6345                 eth_broadcast_addr(request->bssid);
6346
6347         request->wdev = wdev;
6348         request->wiphy = &rdev->wiphy;
6349         request->scan_start = jiffies;
6350
6351         rdev->scan_req = request;
6352         err = rdev_scan(rdev, request);
6353
6354         if (!err) {
6355                 nl80211_send_scan_start(rdev, wdev);
6356                 if (wdev->netdev)
6357                         dev_hold(wdev->netdev);
6358         } else {
6359  out_free:
6360                 rdev->scan_req = NULL;
6361                 kfree(request);
6362         }
6363
6364  unlock:
6365         return err;
6366 }
6367
6368 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6369 {
6370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6371         struct wireless_dev *wdev = info->user_ptr[1];
6372
6373         if (!rdev->ops->abort_scan)
6374                 return -EOPNOTSUPP;
6375
6376         if (rdev->scan_msg)
6377                 return 0;
6378
6379         if (!rdev->scan_req)
6380                 return -ENOENT;
6381
6382         rdev_abort_scan(rdev, wdev);
6383         return 0;
6384 }
6385
6386 static int
6387 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6388                                struct cfg80211_sched_scan_request *request,
6389                                struct nlattr **attrs)
6390 {
6391         int tmp, err, i = 0;
6392         struct nlattr *attr;
6393
6394         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6395                 u32 interval;
6396
6397                 /*
6398                  * If scan plans are not specified,
6399                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6400                  * case one scan plan will be set with the specified scan
6401                  * interval and infinite number of iterations.
6402                  */
6403                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6404                         return -EINVAL;
6405
6406                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6407                 if (!interval)
6408                         return -EINVAL;
6409
6410                 request->scan_plans[0].interval =
6411                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6412                 if (!request->scan_plans[0].interval)
6413                         return -EINVAL;
6414
6415                 if (request->scan_plans[0].interval >
6416                     wiphy->max_sched_scan_plan_interval)
6417                         request->scan_plans[0].interval =
6418                                 wiphy->max_sched_scan_plan_interval;
6419
6420                 return 0;
6421         }
6422
6423         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6424                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6425
6426                 if (WARN_ON(i >= n_plans))
6427                         return -EINVAL;
6428
6429                 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6430                                 nla_data(attr), nla_len(attr),
6431                                 nl80211_plan_policy);
6432                 if (err)
6433                         return err;
6434
6435                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6436                         return -EINVAL;
6437
6438                 request->scan_plans[i].interval =
6439                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6440                 if (!request->scan_plans[i].interval ||
6441                     request->scan_plans[i].interval >
6442                     wiphy->max_sched_scan_plan_interval)
6443                         return -EINVAL;
6444
6445                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6446                         request->scan_plans[i].iterations =
6447                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6448                         if (!request->scan_plans[i].iterations ||
6449                             (request->scan_plans[i].iterations >
6450                              wiphy->max_sched_scan_plan_iterations))
6451                                 return -EINVAL;
6452                 } else if (i < n_plans - 1) {
6453                         /*
6454                          * All scan plans but the last one must specify
6455                          * a finite number of iterations
6456                          */
6457                         return -EINVAL;
6458                 }
6459
6460                 i++;
6461         }
6462
6463         /*
6464          * The last scan plan must not specify the number of
6465          * iterations, it is supposed to run infinitely
6466          */
6467         if (request->scan_plans[n_plans - 1].iterations)
6468                 return  -EINVAL;
6469
6470         return 0;
6471 }
6472
6473 static struct cfg80211_sched_scan_request *
6474 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6475                          struct nlattr **attrs)
6476 {
6477         struct cfg80211_sched_scan_request *request;
6478         struct nlattr *attr;
6479         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6480         enum nl80211_band band;
6481         size_t ie_len;
6482         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6483         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6484
6485         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6486                 return ERR_PTR(-EINVAL);
6487
6488         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6489                 n_channels = validate_scan_freqs(
6490                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6491                 if (!n_channels)
6492                         return ERR_PTR(-EINVAL);
6493         } else {
6494                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6495         }
6496
6497         if (attrs[NL80211_ATTR_SCAN_SSIDS])
6498                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6499                                     tmp)
6500                         n_ssids++;
6501
6502         if (n_ssids > wiphy->max_sched_scan_ssids)
6503                 return ERR_PTR(-EINVAL);
6504
6505         /*
6506          * First, count the number of 'real' matchsets. Due to an issue with
6507          * the old implementation, matchsets containing only the RSSI attribute
6508          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6509          * RSSI for all matchsets, rather than their own matchset for reporting
6510          * all APs with a strong RSSI. This is needed to be compatible with
6511          * older userspace that treated a matchset with only the RSSI as the
6512          * global RSSI for all other matchsets - if there are other matchsets.
6513          */
6514         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6515                 nla_for_each_nested(attr,
6516                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6517                                     tmp) {
6518                         struct nlattr *rssi;
6519
6520                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6521                                         nla_data(attr), nla_len(attr),
6522                                         nl80211_match_policy);
6523                         if (err)
6524                                 return ERR_PTR(err);
6525                         /* add other standalone attributes here */
6526                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6527                                 n_match_sets++;
6528                                 continue;
6529                         }
6530                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6531                         if (rssi)
6532                                 default_match_rssi = nla_get_s32(rssi);
6533                 }
6534         }
6535
6536         /* However, if there's no other matchset, add the RSSI one */
6537         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6538                 n_match_sets = 1;
6539
6540         if (n_match_sets > wiphy->max_match_sets)
6541                 return ERR_PTR(-EINVAL);
6542
6543         if (attrs[NL80211_ATTR_IE])
6544                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6545         else
6546                 ie_len = 0;
6547
6548         if (ie_len > wiphy->max_sched_scan_ie_len)
6549                 return ERR_PTR(-EINVAL);
6550
6551         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6552                 /*
6553                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6554                  * each scan plan already specifies its own interval
6555                  */
6556                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6557                         return ERR_PTR(-EINVAL);
6558
6559                 nla_for_each_nested(attr,
6560                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6561                         n_plans++;
6562         } else {
6563                 /*
6564                  * The scan interval attribute is kept for backward
6565                  * compatibility. If no scan plans are specified and sched scan
6566                  * interval is specified, one scan plan will be set with this
6567                  * scan interval and infinite number of iterations.
6568                  */
6569                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6570                         return ERR_PTR(-EINVAL);
6571
6572                 n_plans = 1;
6573         }
6574
6575         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6576                 return ERR_PTR(-EINVAL);
6577
6578         request = kzalloc(sizeof(*request)
6579                         + sizeof(*request->ssids) * n_ssids
6580                         + sizeof(*request->match_sets) * n_match_sets
6581                         + sizeof(*request->scan_plans) * n_plans
6582                         + sizeof(*request->channels) * n_channels
6583                         + ie_len, GFP_KERNEL);
6584         if (!request)
6585                 return ERR_PTR(-ENOMEM);
6586
6587         if (n_ssids)
6588                 request->ssids = (void *)&request->channels[n_channels];
6589         request->n_ssids = n_ssids;
6590         if (ie_len) {
6591                 if (n_ssids)
6592                         request->ie = (void *)(request->ssids + n_ssids);
6593                 else
6594                         request->ie = (void *)(request->channels + n_channels);
6595         }
6596
6597         if (n_match_sets) {
6598                 if (request->ie)
6599                         request->match_sets = (void *)(request->ie + ie_len);
6600                 else if (n_ssids)
6601                         request->match_sets =
6602                                 (void *)(request->ssids + n_ssids);
6603                 else
6604                         request->match_sets =
6605                                 (void *)(request->channels + n_channels);
6606         }
6607         request->n_match_sets = n_match_sets;
6608
6609         if (n_match_sets)
6610                 request->scan_plans = (void *)(request->match_sets +
6611                                                n_match_sets);
6612         else if (request->ie)
6613                 request->scan_plans = (void *)(request->ie + ie_len);
6614         else if (n_ssids)
6615                 request->scan_plans = (void *)(request->ssids + n_ssids);
6616         else
6617                 request->scan_plans = (void *)(request->channels + n_channels);
6618
6619         request->n_scan_plans = n_plans;
6620
6621         i = 0;
6622         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6623                 /* user specified, bail out if channel not found */
6624                 nla_for_each_nested(attr,
6625                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6626                                     tmp) {
6627                         struct ieee80211_channel *chan;
6628
6629                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6630
6631                         if (!chan) {
6632                                 err = -EINVAL;
6633                                 goto out_free;
6634                         }
6635
6636                         /* ignore disabled channels */
6637                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6638                                 continue;
6639
6640                         request->channels[i] = chan;
6641                         i++;
6642                 }
6643         } else {
6644                 /* all channels */
6645                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6646                         int j;
6647
6648                         if (!wiphy->bands[band])
6649                                 continue;
6650                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6651                                 struct ieee80211_channel *chan;
6652
6653                                 chan = &wiphy->bands[band]->channels[j];
6654
6655                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6656                                         continue;
6657
6658                                 request->channels[i] = chan;
6659                                 i++;
6660                         }
6661                 }
6662         }
6663
6664         if (!i) {
6665                 err = -EINVAL;
6666                 goto out_free;
6667         }
6668
6669         request->n_channels = i;
6670
6671         i = 0;
6672         if (n_ssids) {
6673                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6674                                     tmp) {
6675                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6676                                 err = -EINVAL;
6677                                 goto out_free;
6678                         }
6679                         request->ssids[i].ssid_len = nla_len(attr);
6680                         memcpy(request->ssids[i].ssid, nla_data(attr),
6681                                nla_len(attr));
6682                         i++;
6683                 }
6684         }
6685
6686         i = 0;
6687         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6688                 nla_for_each_nested(attr,
6689                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6690                                     tmp) {
6691                         struct nlattr *ssid, *rssi;
6692
6693                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6694                                         nla_data(attr), nla_len(attr),
6695                                         nl80211_match_policy);
6696                         if (err)
6697                                 goto out_free;
6698                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6699                         if (ssid) {
6700                                 if (WARN_ON(i >= n_match_sets)) {
6701                                         /* this indicates a programming error,
6702                                          * the loop above should have verified
6703                                          * things properly
6704                                          */
6705                                         err = -EINVAL;
6706                                         goto out_free;
6707                                 }
6708
6709                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6710                                         err = -EINVAL;
6711                                         goto out_free;
6712                                 }
6713                                 memcpy(request->match_sets[i].ssid.ssid,
6714                                        nla_data(ssid), nla_len(ssid));
6715                                 request->match_sets[i].ssid.ssid_len =
6716                                         nla_len(ssid);
6717                                 /* special attribute - old implementation w/a */
6718                                 request->match_sets[i].rssi_thold =
6719                                         default_match_rssi;
6720                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6721                                 if (rssi)
6722                                         request->match_sets[i].rssi_thold =
6723                                                 nla_get_s32(rssi);
6724                         }
6725                         i++;
6726                 }
6727
6728                 /* there was no other matchset, so the RSSI one is alone */
6729                 if (i == 0 && n_match_sets)
6730                         request->match_sets[0].rssi_thold = default_match_rssi;
6731
6732                 request->min_rssi_thold = INT_MAX;
6733                 for (i = 0; i < n_match_sets; i++)
6734                         request->min_rssi_thold =
6735                                 min(request->match_sets[i].rssi_thold,
6736                                     request->min_rssi_thold);
6737         } else {
6738                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6739         }
6740
6741         if (ie_len) {
6742                 request->ie_len = ie_len;
6743                 memcpy((void *)request->ie,
6744                        nla_data(attrs[NL80211_ATTR_IE]),
6745                        request->ie_len);
6746         }
6747
6748         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6749                 request->flags = nla_get_u32(
6750                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6751                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6752                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6753                         err = -EOPNOTSUPP;
6754                         goto out_free;
6755                 }
6756
6757                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6758                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6759
6760                         if (!wdev) /* must be net-detect */
6761                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6762
6763                         if (!(wiphy->features & flg)) {
6764                                 err = -EOPNOTSUPP;
6765                                 goto out_free;
6766                         }
6767
6768                         if (wdev && wdev->current_bss) {
6769                                 err = -EOPNOTSUPP;
6770                                 goto out_free;
6771                         }
6772
6773                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6774                                                        request->mac_addr_mask);
6775                         if (err)
6776                                 goto out_free;
6777                 }
6778         }
6779
6780         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6781                 request->delay =
6782                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6783
6784         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6785         if (err)
6786                 goto out_free;
6787
6788         request->scan_start = jiffies;
6789
6790         return request;
6791
6792 out_free:
6793         kfree(request);
6794         return ERR_PTR(err);
6795 }
6796
6797 static int nl80211_start_sched_scan(struct sk_buff *skb,
6798                                     struct genl_info *info)
6799 {
6800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6801         struct net_device *dev = info->user_ptr[1];
6802         struct wireless_dev *wdev = dev->ieee80211_ptr;
6803         struct cfg80211_sched_scan_request *sched_scan_req;
6804         int err;
6805
6806         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6807             !rdev->ops->sched_scan_start)
6808                 return -EOPNOTSUPP;
6809
6810         if (rdev->sched_scan_req)
6811                 return -EINPROGRESS;
6812
6813         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6814                                                   info->attrs);
6815
6816         err = PTR_ERR_OR_ZERO(sched_scan_req);
6817         if (err)
6818                 goto out_err;
6819
6820         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6821         if (err)
6822                 goto out_free;
6823
6824         sched_scan_req->dev = dev;
6825         sched_scan_req->wiphy = &rdev->wiphy;
6826
6827         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6828                 sched_scan_req->owner_nlportid = info->snd_portid;
6829
6830         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6831
6832         nl80211_send_sched_scan(rdev, dev,
6833                                 NL80211_CMD_START_SCHED_SCAN);
6834         return 0;
6835
6836 out_free:
6837         kfree(sched_scan_req);
6838 out_err:
6839         return err;
6840 }
6841
6842 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6843                                    struct genl_info *info)
6844 {
6845         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6846
6847         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6848             !rdev->ops->sched_scan_stop)
6849                 return -EOPNOTSUPP;
6850
6851         return __cfg80211_stop_sched_scan(rdev, false);
6852 }
6853
6854 static int nl80211_start_radar_detection(struct sk_buff *skb,
6855                                          struct genl_info *info)
6856 {
6857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6858         struct net_device *dev = info->user_ptr[1];
6859         struct wireless_dev *wdev = dev->ieee80211_ptr;
6860         struct cfg80211_chan_def chandef;
6861         enum nl80211_dfs_regions dfs_region;
6862         unsigned int cac_time_ms;
6863         int err;
6864
6865         dfs_region = reg_get_dfs_region(wdev->wiphy);
6866         if (dfs_region == NL80211_DFS_UNSET)
6867                 return -EINVAL;
6868
6869         err = nl80211_parse_chandef(rdev, info, &chandef);
6870         if (err)
6871                 return err;
6872
6873         if (netif_carrier_ok(dev))
6874                 return -EBUSY;
6875
6876         if (wdev->cac_started)
6877                 return -EBUSY;
6878
6879         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6880                                             wdev->iftype);
6881         if (err < 0)
6882                 return err;
6883
6884         if (err == 0)
6885                 return -EINVAL;
6886
6887         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6888                 return -EINVAL;
6889
6890         if (!rdev->ops->start_radar_detection)
6891                 return -EOPNOTSUPP;
6892
6893         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6894         if (WARN_ON(!cac_time_ms))
6895                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6896
6897         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6898         if (!err) {
6899                 wdev->chandef = chandef;
6900                 wdev->cac_started = true;
6901                 wdev->cac_start_time = jiffies;
6902                 wdev->cac_time_ms = cac_time_ms;
6903         }
6904         return err;
6905 }
6906
6907 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6908 {
6909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6910         struct net_device *dev = info->user_ptr[1];
6911         struct wireless_dev *wdev = dev->ieee80211_ptr;
6912         struct cfg80211_csa_settings params;
6913         /* csa_attrs is defined static to avoid waste of stack size - this
6914          * function is called under RTNL lock, so this should not be a problem.
6915          */
6916         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6917         int err;
6918         bool need_new_beacon = false;
6919         int len, i;
6920         u32 cs_count;
6921
6922         if (!rdev->ops->channel_switch ||
6923             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6924                 return -EOPNOTSUPP;
6925
6926         switch (dev->ieee80211_ptr->iftype) {
6927         case NL80211_IFTYPE_AP:
6928         case NL80211_IFTYPE_P2P_GO:
6929                 need_new_beacon = true;
6930
6931                 /* useless if AP is not running */
6932                 if (!wdev->beacon_interval)
6933                         return -ENOTCONN;
6934                 break;
6935         case NL80211_IFTYPE_ADHOC:
6936                 if (!wdev->ssid_len)
6937                         return -ENOTCONN;
6938                 break;
6939         case NL80211_IFTYPE_MESH_POINT:
6940                 if (!wdev->mesh_id_len)
6941                         return -ENOTCONN;
6942                 break;
6943         default:
6944                 return -EOPNOTSUPP;
6945         }
6946
6947         memset(&params, 0, sizeof(params));
6948
6949         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6950             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6951                 return -EINVAL;
6952
6953         /* only important for AP, IBSS and mesh create IEs internally */
6954         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6955                 return -EINVAL;
6956
6957         /* Even though the attribute is u32, the specification says
6958          * u8, so let's make sure we don't overflow.
6959          */
6960         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6961         if (cs_count > 255)
6962                 return -EINVAL;
6963
6964         params.count = cs_count;
6965
6966         if (!need_new_beacon)
6967                 goto skip_beacons;
6968
6969         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6970         if (err)
6971                 return err;
6972
6973         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6974                                info->attrs[NL80211_ATTR_CSA_IES],
6975                                nl80211_policy);
6976         if (err)
6977                 return err;
6978
6979         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6980         if (err)
6981                 return err;
6982
6983         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6984                 return -EINVAL;
6985
6986         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6987         if (!len || (len % sizeof(u16)))
6988                 return -EINVAL;
6989
6990         params.n_counter_offsets_beacon = len / sizeof(u16);
6991         if (rdev->wiphy.max_num_csa_counters &&
6992             (params.n_counter_offsets_beacon >
6993              rdev->wiphy.max_num_csa_counters))
6994                 return -EINVAL;
6995
6996         params.counter_offsets_beacon =
6997                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6998
6999         /* sanity checks - counters should fit and be the same */
7000         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7001                 u16 offset = params.counter_offsets_beacon[i];
7002
7003                 if (offset >= params.beacon_csa.tail_len)
7004                         return -EINVAL;
7005
7006                 if (params.beacon_csa.tail[offset] != params.count)
7007                         return -EINVAL;
7008         }
7009
7010         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7011                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7012                 if (!len || (len % sizeof(u16)))
7013                         return -EINVAL;
7014
7015                 params.n_counter_offsets_presp = len / sizeof(u16);
7016                 if (rdev->wiphy.max_num_csa_counters &&
7017                     (params.n_counter_offsets_beacon >
7018                      rdev->wiphy.max_num_csa_counters))
7019                         return -EINVAL;
7020
7021                 params.counter_offsets_presp =
7022                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7023
7024                 /* sanity checks - counters should fit and be the same */
7025                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7026                         u16 offset = params.counter_offsets_presp[i];
7027
7028                         if (offset >= params.beacon_csa.probe_resp_len)
7029                                 return -EINVAL;
7030
7031                         if (params.beacon_csa.probe_resp[offset] !=
7032                             params.count)
7033                                 return -EINVAL;
7034                 }
7035         }
7036
7037 skip_beacons:
7038         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7039         if (err)
7040                 return err;
7041
7042         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7043                                            wdev->iftype))
7044                 return -EINVAL;
7045
7046         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7047                                             &params.chandef,
7048                                             wdev->iftype);
7049         if (err < 0)
7050                 return err;
7051
7052         if (err > 0)
7053                 params.radar_required = true;
7054
7055         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7056                 params.block_tx = true;
7057
7058         wdev_lock(wdev);
7059         err = rdev_channel_switch(rdev, dev, &params);
7060         wdev_unlock(wdev);
7061
7062         return err;
7063 }
7064
7065 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7066                             u32 seq, int flags,
7067                             struct cfg80211_registered_device *rdev,
7068                             struct wireless_dev *wdev,
7069                             struct cfg80211_internal_bss *intbss)
7070 {
7071         struct cfg80211_bss *res = &intbss->pub;
7072         const struct cfg80211_bss_ies *ies;
7073         void *hdr;
7074         struct nlattr *bss;
7075
7076         ASSERT_WDEV_LOCK(wdev);
7077
7078         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7079                              NL80211_CMD_NEW_SCAN_RESULTS);
7080         if (!hdr)
7081                 return -1;
7082
7083         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7084
7085         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7086                 goto nla_put_failure;
7087         if (wdev->netdev &&
7088             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7089                 goto nla_put_failure;
7090         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7091                               NL80211_ATTR_PAD))
7092                 goto nla_put_failure;
7093
7094         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7095         if (!bss)
7096                 goto nla_put_failure;
7097         if ((!is_zero_ether_addr(res->bssid) &&
7098              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7099                 goto nla_put_failure;
7100
7101         rcu_read_lock();
7102         /* indicate whether we have probe response data or not */
7103         if (rcu_access_pointer(res->proberesp_ies) &&
7104             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7105                 goto fail_unlock_rcu;
7106
7107         /* this pointer prefers to be pointed to probe response data
7108          * but is always valid
7109          */
7110         ies = rcu_dereference(res->ies);
7111         if (ies) {
7112                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7113                                       NL80211_BSS_PAD))
7114                         goto fail_unlock_rcu;
7115                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7116                                         ies->len, ies->data))
7117                         goto fail_unlock_rcu;
7118         }
7119
7120         /* and this pointer is always (unless driver didn't know) beacon data */
7121         ies = rcu_dereference(res->beacon_ies);
7122         if (ies && ies->from_beacon) {
7123                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7124                                       NL80211_BSS_PAD))
7125                         goto fail_unlock_rcu;
7126                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7127                                         ies->len, ies->data))
7128                         goto fail_unlock_rcu;
7129         }
7130         rcu_read_unlock();
7131
7132         if (res->beacon_interval &&
7133             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7134                 goto nla_put_failure;
7135         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7136             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7137             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7138             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7139                         jiffies_to_msecs(jiffies - intbss->ts)))
7140                 goto nla_put_failure;
7141
7142         if (intbss->parent_tsf &&
7143             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7144                                intbss->parent_tsf, NL80211_BSS_PAD) ||
7145              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7146                      intbss->parent_bssid)))
7147                 goto nla_put_failure;
7148
7149         if (intbss->ts_boottime &&
7150             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7151                               intbss->ts_boottime, NL80211_BSS_PAD))
7152                 goto nla_put_failure;
7153
7154         switch (rdev->wiphy.signal_type) {
7155         case CFG80211_SIGNAL_TYPE_MBM:
7156                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7157                         goto nla_put_failure;
7158                 break;
7159         case CFG80211_SIGNAL_TYPE_UNSPEC:
7160                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7161                         goto nla_put_failure;
7162                 break;
7163         default:
7164                 break;
7165         }
7166
7167         switch (wdev->iftype) {
7168         case NL80211_IFTYPE_P2P_CLIENT:
7169         case NL80211_IFTYPE_STATION:
7170                 if (intbss == wdev->current_bss &&
7171                     nla_put_u32(msg, NL80211_BSS_STATUS,
7172                                 NL80211_BSS_STATUS_ASSOCIATED))
7173                         goto nla_put_failure;
7174                 break;
7175         case NL80211_IFTYPE_ADHOC:
7176                 if (intbss == wdev->current_bss &&
7177                     nla_put_u32(msg, NL80211_BSS_STATUS,
7178                                 NL80211_BSS_STATUS_IBSS_JOINED))
7179                         goto nla_put_failure;
7180                 break;
7181         default:
7182                 break;
7183         }
7184
7185         nla_nest_end(msg, bss);
7186
7187         genlmsg_end(msg, hdr);
7188         return 0;
7189
7190  fail_unlock_rcu:
7191         rcu_read_unlock();
7192  nla_put_failure:
7193         genlmsg_cancel(msg, hdr);
7194         return -EMSGSIZE;
7195 }
7196
7197 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7198 {
7199         struct cfg80211_registered_device *rdev;
7200         struct cfg80211_internal_bss *scan;
7201         struct wireless_dev *wdev;
7202         int start = cb->args[2], idx = 0;
7203         int err;
7204
7205         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7206         if (err)
7207                 return err;
7208
7209         wdev_lock(wdev);
7210         spin_lock_bh(&rdev->bss_lock);
7211         cfg80211_bss_expire(rdev);
7212
7213         cb->seq = rdev->bss_generation;
7214
7215         list_for_each_entry(scan, &rdev->bss_list, list) {
7216                 if (++idx <= start)
7217                         continue;
7218                 if (nl80211_send_bss(skb, cb,
7219                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7220                                 rdev, wdev, scan) < 0) {
7221                         idx--;
7222                         break;
7223                 }
7224         }
7225
7226         spin_unlock_bh(&rdev->bss_lock);
7227         wdev_unlock(wdev);
7228
7229         cb->args[2] = idx;
7230         nl80211_finish_wdev_dump(rdev);
7231
7232         return skb->len;
7233 }
7234
7235 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7236                                int flags, struct net_device *dev,
7237                                bool allow_radio_stats,
7238                                struct survey_info *survey)
7239 {
7240         void *hdr;
7241         struct nlattr *infoattr;
7242
7243         /* skip radio stats if userspace didn't request them */
7244         if (!survey->channel && !allow_radio_stats)
7245                 return 0;
7246
7247         hdr = nl80211hdr_put(msg, portid, seq, flags,
7248                              NL80211_CMD_NEW_SURVEY_RESULTS);
7249         if (!hdr)
7250                 return -ENOMEM;
7251
7252         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7253                 goto nla_put_failure;
7254
7255         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7256         if (!infoattr)
7257                 goto nla_put_failure;
7258
7259         if (survey->channel &&
7260             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7261                         survey->channel->center_freq))
7262                 goto nla_put_failure;
7263
7264         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7265             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7266                 goto nla_put_failure;
7267         if ((survey->filled & SURVEY_INFO_IN_USE) &&
7268             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7269                 goto nla_put_failure;
7270         if ((survey->filled & SURVEY_INFO_TIME) &&
7271             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7272                         survey->time, NL80211_SURVEY_INFO_PAD))
7273                 goto nla_put_failure;
7274         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7275             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7276                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
7277                 goto nla_put_failure;
7278         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7279             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7280                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7281                 goto nla_put_failure;
7282         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7283             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7284                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
7285                 goto nla_put_failure;
7286         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7287             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7288                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
7289                 goto nla_put_failure;
7290         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7291             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7292                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
7293                 goto nla_put_failure;
7294
7295         nla_nest_end(msg, infoattr);
7296
7297         genlmsg_end(msg, hdr);
7298         return 0;
7299
7300  nla_put_failure:
7301         genlmsg_cancel(msg, hdr);
7302         return -EMSGSIZE;
7303 }
7304
7305 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7306 {
7307         struct survey_info survey;
7308         struct cfg80211_registered_device *rdev;
7309         struct wireless_dev *wdev;
7310         int survey_idx = cb->args[2];
7311         int res;
7312         bool radio_stats;
7313
7314         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7315         if (res)
7316                 return res;
7317
7318         /* prepare_wdev_dump parsed the attributes */
7319         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7320
7321         if (!wdev->netdev) {
7322                 res = -EINVAL;
7323                 goto out_err;
7324         }
7325
7326         if (!rdev->ops->dump_survey) {
7327                 res = -EOPNOTSUPP;
7328                 goto out_err;
7329         }
7330
7331         while (1) {
7332                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7333                 if (res == -ENOENT)
7334                         break;
7335                 if (res)
7336                         goto out_err;
7337
7338                 /* don't send disabled channels, but do send non-channel data */
7339                 if (survey.channel &&
7340                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7341                         survey_idx++;
7342                         continue;
7343                 }
7344
7345                 if (nl80211_send_survey(skb,
7346                                 NETLINK_CB(cb->skb).portid,
7347                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7348                                 wdev->netdev, radio_stats, &survey) < 0)
7349                         goto out;
7350                 survey_idx++;
7351         }
7352
7353  out:
7354         cb->args[2] = survey_idx;
7355         res = skb->len;
7356  out_err:
7357         nl80211_finish_wdev_dump(rdev);
7358         return res;
7359 }
7360
7361 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7362 {
7363         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7364                                   NL80211_WPA_VERSION_2));
7365 }
7366
7367 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7368 {
7369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7370         struct net_device *dev = info->user_ptr[1];
7371         struct ieee80211_channel *chan;
7372         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7373         int err, ssid_len, ie_len = 0, sae_data_len = 0;
7374         enum nl80211_auth_type auth_type;
7375         struct key_parse key;
7376         bool local_state_change;
7377
7378         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7379                 return -EINVAL;
7380
7381         if (!info->attrs[NL80211_ATTR_MAC])
7382                 return -EINVAL;
7383
7384         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7385                 return -EINVAL;
7386
7387         if (!info->attrs[NL80211_ATTR_SSID])
7388                 return -EINVAL;
7389
7390         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7391                 return -EINVAL;
7392
7393         err = nl80211_parse_key(info, &key);
7394         if (err)
7395                 return err;
7396
7397         if (key.idx >= 0) {
7398                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7399                         return -EINVAL;
7400                 if (!key.p.key || !key.p.key_len)
7401                         return -EINVAL;
7402                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7403                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7404                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7405                      key.p.key_len != WLAN_KEY_LEN_WEP104))
7406                         return -EINVAL;
7407                 if (key.idx > 3)
7408                         return -EINVAL;
7409         } else {
7410                 key.p.key_len = 0;
7411                 key.p.key = NULL;
7412         }
7413
7414         if (key.idx >= 0) {
7415                 int i;
7416                 bool ok = false;
7417
7418                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7419                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7420                                 ok = true;
7421                                 break;
7422                         }
7423                 }
7424                 if (!ok)
7425                         return -EINVAL;
7426         }
7427
7428         if (!rdev->ops->auth)
7429                 return -EOPNOTSUPP;
7430
7431         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7432             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7433                 return -EOPNOTSUPP;
7434
7435         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7436         chan = nl80211_get_valid_chan(&rdev->wiphy,
7437                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7438         if (!chan)
7439                 return -EINVAL;
7440
7441         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7442         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7443
7444         if (info->attrs[NL80211_ATTR_IE]) {
7445                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7446                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7447         }
7448
7449         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7450         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7451                 return -EINVAL;
7452
7453         if (auth_type == NL80211_AUTHTYPE_SAE &&
7454             !info->attrs[NL80211_ATTR_SAE_DATA])
7455                 return -EINVAL;
7456
7457         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7458                 if (auth_type != NL80211_AUTHTYPE_SAE)
7459                         return -EINVAL;
7460                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7461                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7462                 /* need to include at least Auth Transaction and Status Code */
7463                 if (sae_data_len < 4)
7464                         return -EINVAL;
7465         }
7466
7467         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7468
7469         /*
7470          * Since we no longer track auth state, ignore
7471          * requests to only change local state.
7472          */
7473         if (local_state_change)
7474                 return 0;
7475
7476         wdev_lock(dev->ieee80211_ptr);
7477         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7478                                  ssid, ssid_len, ie, ie_len,
7479                                  key.p.key, key.p.key_len, key.idx,
7480                                  sae_data, sae_data_len);
7481         wdev_unlock(dev->ieee80211_ptr);
7482         return err;
7483 }
7484
7485 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7486                                    struct genl_info *info,
7487                                    struct cfg80211_crypto_settings *settings,
7488                                    int cipher_limit)
7489 {
7490         memset(settings, 0, sizeof(*settings));
7491
7492         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7493
7494         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7495                 u16 proto;
7496
7497                 proto = nla_get_u16(
7498                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7499                 settings->control_port_ethertype = cpu_to_be16(proto);
7500                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7501                     proto != ETH_P_PAE)
7502                         return -EINVAL;
7503                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7504                         settings->control_port_no_encrypt = true;
7505         } else
7506                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7507
7508         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7509                 void *data;
7510                 int len, i;
7511
7512                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7513                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7514                 settings->n_ciphers_pairwise = len / sizeof(u32);
7515
7516                 if (len % sizeof(u32))
7517                         return -EINVAL;
7518
7519                 if (settings->n_ciphers_pairwise > cipher_limit)
7520                         return -EINVAL;
7521
7522                 memcpy(settings->ciphers_pairwise, data, len);
7523
7524                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7525                         if (!cfg80211_supported_cipher_suite(
7526                                         &rdev->wiphy,
7527                                         settings->ciphers_pairwise[i]))
7528                                 return -EINVAL;
7529         }
7530
7531         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7532                 settings->cipher_group =
7533                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7534                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7535                                                      settings->cipher_group))
7536                         return -EINVAL;
7537         }
7538
7539         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7540                 settings->wpa_versions =
7541                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7542                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7543                         return -EINVAL;
7544         }
7545
7546         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7547                 void *data;
7548                 int len;
7549
7550                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7551                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7552                 settings->n_akm_suites = len / sizeof(u32);
7553
7554                 if (len % sizeof(u32))
7555                         return -EINVAL;
7556
7557                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7558                         return -EINVAL;
7559
7560                 memcpy(settings->akm_suites, data, len);
7561         }
7562
7563         return 0;
7564 }
7565
7566 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7567 {
7568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7569         struct net_device *dev = info->user_ptr[1];
7570         struct ieee80211_channel *chan;
7571         struct cfg80211_assoc_request req = {};
7572         const u8 *bssid, *ssid;
7573         int err, ssid_len = 0;
7574
7575         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7576                 return -EINVAL;
7577
7578         if (!info->attrs[NL80211_ATTR_MAC] ||
7579             !info->attrs[NL80211_ATTR_SSID] ||
7580             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7581                 return -EINVAL;
7582
7583         if (!rdev->ops->assoc)
7584                 return -EOPNOTSUPP;
7585
7586         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7587             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7588                 return -EOPNOTSUPP;
7589
7590         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7591
7592         chan = nl80211_get_valid_chan(&rdev->wiphy,
7593                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7594         if (!chan)
7595                 return -EINVAL;
7596
7597         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7598         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7599
7600         if (info->attrs[NL80211_ATTR_IE]) {
7601                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7602                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7603         }
7604
7605         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7606                 enum nl80211_mfp mfp =
7607                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7608                 if (mfp == NL80211_MFP_REQUIRED)
7609                         req.use_mfp = true;
7610                 else if (mfp != NL80211_MFP_NO)
7611                         return -EINVAL;
7612         }
7613
7614         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7615                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7616
7617         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7618                 req.flags |= ASSOC_REQ_DISABLE_HT;
7619
7620         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7621                 memcpy(&req.ht_capa_mask,
7622                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7623                        sizeof(req.ht_capa_mask));
7624
7625         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7626                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7627                         return -EINVAL;
7628                 memcpy(&req.ht_capa,
7629                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7630                        sizeof(req.ht_capa));
7631         }
7632
7633         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7634                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7635
7636         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7637                 memcpy(&req.vht_capa_mask,
7638                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7639                        sizeof(req.vht_capa_mask));
7640
7641         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7642                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7643                         return -EINVAL;
7644                 memcpy(&req.vht_capa,
7645                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7646                        sizeof(req.vht_capa));
7647         }
7648
7649         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7650                 if (!((rdev->wiphy.features &
7651                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7652                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7653                     !wiphy_ext_feature_isset(&rdev->wiphy,
7654                                              NL80211_EXT_FEATURE_RRM))
7655                         return -EINVAL;
7656                 req.flags |= ASSOC_REQ_USE_RRM;
7657         }
7658
7659         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7660         if (!err) {
7661                 wdev_lock(dev->ieee80211_ptr);
7662                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7663                                           ssid, ssid_len, &req);
7664                 wdev_unlock(dev->ieee80211_ptr);
7665         }
7666
7667         return err;
7668 }
7669
7670 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7671 {
7672         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7673         struct net_device *dev = info->user_ptr[1];
7674         const u8 *ie = NULL, *bssid;
7675         int ie_len = 0, err;
7676         u16 reason_code;
7677         bool local_state_change;
7678
7679         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7680                 return -EINVAL;
7681
7682         if (!info->attrs[NL80211_ATTR_MAC])
7683                 return -EINVAL;
7684
7685         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7686                 return -EINVAL;
7687
7688         if (!rdev->ops->deauth)
7689                 return -EOPNOTSUPP;
7690
7691         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7692             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7693                 return -EOPNOTSUPP;
7694
7695         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7696
7697         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7698         if (reason_code == 0) {
7699                 /* Reason Code 0 is reserved */
7700                 return -EINVAL;
7701         }
7702
7703         if (info->attrs[NL80211_ATTR_IE]) {
7704                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7705                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7706         }
7707
7708         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7709
7710         wdev_lock(dev->ieee80211_ptr);
7711         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7712                                    local_state_change);
7713         wdev_unlock(dev->ieee80211_ptr);
7714         return err;
7715 }
7716
7717 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7718 {
7719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7720         struct net_device *dev = info->user_ptr[1];
7721         const u8 *ie = NULL, *bssid;
7722         int ie_len = 0, err;
7723         u16 reason_code;
7724         bool local_state_change;
7725
7726         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7727                 return -EINVAL;
7728
7729         if (!info->attrs[NL80211_ATTR_MAC])
7730                 return -EINVAL;
7731
7732         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7733                 return -EINVAL;
7734
7735         if (!rdev->ops->disassoc)
7736                 return -EOPNOTSUPP;
7737
7738         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7739             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7740                 return -EOPNOTSUPP;
7741
7742         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7743
7744         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7745         if (reason_code == 0) {
7746                 /* Reason Code 0 is reserved */
7747                 return -EINVAL;
7748         }
7749
7750         if (info->attrs[NL80211_ATTR_IE]) {
7751                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7752                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7753         }
7754
7755         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7756
7757         wdev_lock(dev->ieee80211_ptr);
7758         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7759                                      local_state_change);
7760         wdev_unlock(dev->ieee80211_ptr);
7761         return err;
7762 }
7763
7764 static bool
7765 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7766                          int mcast_rate[NUM_NL80211_BANDS],
7767                          int rateval)
7768 {
7769         struct wiphy *wiphy = &rdev->wiphy;
7770         bool found = false;
7771         int band, i;
7772
7773         for (band = 0; band < NUM_NL80211_BANDS; band++) {
7774                 struct ieee80211_supported_band *sband;
7775
7776                 sband = wiphy->bands[band];
7777                 if (!sband)
7778                         continue;
7779
7780                 for (i = 0; i < sband->n_bitrates; i++) {
7781                         if (sband->bitrates[i].bitrate == rateval) {
7782                                 mcast_rate[band] = i + 1;
7783                                 found = true;
7784                                 break;
7785                         }
7786                 }
7787         }
7788
7789         return found;
7790 }
7791
7792 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7793 {
7794         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7795         struct net_device *dev = info->user_ptr[1];
7796         struct cfg80211_ibss_params ibss;
7797         struct wiphy *wiphy;
7798         struct cfg80211_cached_keys *connkeys = NULL;
7799         int err;
7800
7801         memset(&ibss, 0, sizeof(ibss));
7802
7803         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7804                 return -EINVAL;
7805
7806         if (!info->attrs[NL80211_ATTR_SSID] ||
7807             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7808                 return -EINVAL;
7809
7810         ibss.beacon_interval = 100;
7811
7812         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
7813                 ibss.beacon_interval =
7814                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7815
7816         err = cfg80211_validate_beacon_int(rdev, ibss.beacon_interval);
7817         if (err)
7818                 return err;
7819
7820         if (!rdev->ops->join_ibss)
7821                 return -EOPNOTSUPP;
7822
7823         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7824                 return -EOPNOTSUPP;
7825
7826         wiphy = &rdev->wiphy;
7827
7828         if (info->attrs[NL80211_ATTR_MAC]) {
7829                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7830
7831                 if (!is_valid_ether_addr(ibss.bssid))
7832                         return -EINVAL;
7833         }
7834         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7835         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7836
7837         if (info->attrs[NL80211_ATTR_IE]) {
7838                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7839                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7840         }
7841
7842         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7843         if (err)
7844                 return err;
7845
7846         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7847                                      NL80211_IFTYPE_ADHOC))
7848                 return -EINVAL;
7849
7850         switch (ibss.chandef.width) {
7851         case NL80211_CHAN_WIDTH_5:
7852         case NL80211_CHAN_WIDTH_10:
7853         case NL80211_CHAN_WIDTH_20_NOHT:
7854                 break;
7855         case NL80211_CHAN_WIDTH_20:
7856         case NL80211_CHAN_WIDTH_40:
7857                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7858                         return -EINVAL;
7859                 break;
7860         case NL80211_CHAN_WIDTH_80:
7861         case NL80211_CHAN_WIDTH_80P80:
7862         case NL80211_CHAN_WIDTH_160:
7863                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7864                         return -EINVAL;
7865                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7866                                              NL80211_EXT_FEATURE_VHT_IBSS))
7867                         return -EINVAL;
7868                 break;
7869         default:
7870                 return -EINVAL;
7871         }
7872
7873         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7874         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7875
7876         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7877                 u8 *rates =
7878                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7879                 int n_rates =
7880                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7881                 struct ieee80211_supported_band *sband =
7882                         wiphy->bands[ibss.chandef.chan->band];
7883
7884                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7885                                              &ibss.basic_rates);
7886                 if (err)
7887                         return err;
7888         }
7889
7890         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7891                 memcpy(&ibss.ht_capa_mask,
7892                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7893                        sizeof(ibss.ht_capa_mask));
7894
7895         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7896                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7897                         return -EINVAL;
7898                 memcpy(&ibss.ht_capa,
7899                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7900                        sizeof(ibss.ht_capa));
7901         }
7902
7903         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7904             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7905                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7906                 return -EINVAL;
7907
7908         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7909                 bool no_ht = false;
7910
7911                 connkeys = nl80211_parse_connkeys(rdev,
7912                                           info->attrs[NL80211_ATTR_KEYS],
7913                                           &no_ht);
7914                 if (IS_ERR(connkeys))
7915                         return PTR_ERR(connkeys);
7916
7917                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7918                     no_ht) {
7919                         kzfree(connkeys);
7920                         return -EINVAL;
7921                 }
7922         }
7923
7924         ibss.control_port =
7925                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7926
7927         ibss.userspace_handles_dfs =
7928                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7929
7930         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7931         if (err)
7932                 kzfree(connkeys);
7933         return err;
7934 }
7935
7936 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7937 {
7938         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7939         struct net_device *dev = info->user_ptr[1];
7940
7941         if (!rdev->ops->leave_ibss)
7942                 return -EOPNOTSUPP;
7943
7944         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7945                 return -EOPNOTSUPP;
7946
7947         return cfg80211_leave_ibss(rdev, dev, false);
7948 }
7949
7950 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7951 {
7952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7953         struct net_device *dev = info->user_ptr[1];
7954         int mcast_rate[NUM_NL80211_BANDS];
7955         u32 nla_rate;
7956         int err;
7957
7958         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7959             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7960             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7961                 return -EOPNOTSUPP;
7962
7963         if (!rdev->ops->set_mcast_rate)
7964                 return -EOPNOTSUPP;
7965
7966         memset(mcast_rate, 0, sizeof(mcast_rate));
7967
7968         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7969                 return -EINVAL;
7970
7971         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7972         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7973                 return -EINVAL;
7974
7975         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7976
7977         return err;
7978 }
7979
7980 static struct sk_buff *
7981 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7982                             struct wireless_dev *wdev, int approxlen,
7983                             u32 portid, u32 seq, enum nl80211_commands cmd,
7984                             enum nl80211_attrs attr,
7985                             const struct nl80211_vendor_cmd_info *info,
7986                             gfp_t gfp)
7987 {
7988         struct sk_buff *skb;
7989         void *hdr;
7990         struct nlattr *data;
7991
7992         skb = nlmsg_new(approxlen + 100, gfp);
7993         if (!skb)
7994                 return NULL;
7995
7996         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7997         if (!hdr) {
7998                 kfree_skb(skb);
7999                 return NULL;
8000         }
8001
8002         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8003                 goto nla_put_failure;
8004
8005         if (info) {
8006                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8007                                 info->vendor_id))
8008                         goto nla_put_failure;
8009                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8010                                 info->subcmd))
8011                         goto nla_put_failure;
8012         }
8013
8014         if (wdev) {
8015                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8016                                       wdev_id(wdev), NL80211_ATTR_PAD))
8017                         goto nla_put_failure;
8018                 if (wdev->netdev &&
8019                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8020                                 wdev->netdev->ifindex))
8021                         goto nla_put_failure;
8022         }
8023
8024         data = nla_nest_start(skb, attr);
8025
8026         ((void **)skb->cb)[0] = rdev;
8027         ((void **)skb->cb)[1] = hdr;
8028         ((void **)skb->cb)[2] = data;
8029
8030         return skb;
8031
8032  nla_put_failure:
8033         kfree_skb(skb);
8034         return NULL;
8035 }
8036
8037 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8038                                            struct wireless_dev *wdev,
8039                                            enum nl80211_commands cmd,
8040                                            enum nl80211_attrs attr,
8041                                            int vendor_event_idx,
8042                                            int approxlen, gfp_t gfp)
8043 {
8044         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8045         const struct nl80211_vendor_cmd_info *info;
8046
8047         switch (cmd) {
8048         case NL80211_CMD_TESTMODE:
8049                 if (WARN_ON(vendor_event_idx != -1))
8050                         return NULL;
8051                 info = NULL;
8052                 break;
8053         case NL80211_CMD_VENDOR:
8054                 if (WARN_ON(vendor_event_idx < 0 ||
8055                             vendor_event_idx >= wiphy->n_vendor_events))
8056                         return NULL;
8057                 info = &wiphy->vendor_events[vendor_event_idx];
8058                 break;
8059         default:
8060                 WARN_ON(1);
8061                 return NULL;
8062         }
8063
8064         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8065                                            cmd, attr, info, gfp);
8066 }
8067 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8068
8069 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8070 {
8071         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8072         void *hdr = ((void **)skb->cb)[1];
8073         struct nlattr *data = ((void **)skb->cb)[2];
8074         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8075
8076         /* clear CB data for netlink core to own from now on */
8077         memset(skb->cb, 0, sizeof(skb->cb));
8078
8079         nla_nest_end(skb, data);
8080         genlmsg_end(skb, hdr);
8081
8082         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8083                 mcgrp = NL80211_MCGRP_VENDOR;
8084
8085         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8086                                 mcgrp, gfp);
8087 }
8088 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8089
8090 #ifdef CONFIG_NL80211_TESTMODE
8091 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8092 {
8093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8094         struct wireless_dev *wdev =
8095                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8096         int err;
8097
8098         if (!rdev->ops->testmode_cmd)
8099                 return -EOPNOTSUPP;
8100
8101         if (IS_ERR(wdev)) {
8102                 err = PTR_ERR(wdev);
8103                 if (err != -EINVAL)
8104                         return err;
8105                 wdev = NULL;
8106         } else if (wdev->wiphy != &rdev->wiphy) {
8107                 return -EINVAL;
8108         }
8109
8110         if (!info->attrs[NL80211_ATTR_TESTDATA])
8111                 return -EINVAL;
8112
8113         rdev->cur_cmd_info = info;
8114         err = rdev_testmode_cmd(rdev, wdev,
8115                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8116                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8117         rdev->cur_cmd_info = NULL;
8118
8119         return err;
8120 }
8121
8122 static int nl80211_testmode_dump(struct sk_buff *skb,
8123                                  struct netlink_callback *cb)
8124 {
8125         struct cfg80211_registered_device *rdev;
8126         int err;
8127         long phy_idx;
8128         void *data = NULL;
8129         int data_len = 0;
8130
8131         rtnl_lock();
8132
8133         if (cb->args[0]) {
8134                 /*
8135                  * 0 is a valid index, but not valid for args[0],
8136                  * so we need to offset by 1.
8137                  */
8138                 phy_idx = cb->args[0] - 1;
8139         } else {
8140                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8141                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
8142                                   nl80211_policy);
8143                 if (err)
8144                         goto out_err;
8145
8146                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
8147                                                   nl80211_fam.attrbuf);
8148                 if (IS_ERR(rdev)) {
8149                         err = PTR_ERR(rdev);
8150                         goto out_err;
8151                 }
8152                 phy_idx = rdev->wiphy_idx;
8153                 rdev = NULL;
8154
8155                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
8156                         cb->args[1] =
8157                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
8158         }
8159
8160         if (cb->args[1]) {
8161                 data = nla_data((void *)cb->args[1]);
8162                 data_len = nla_len((void *)cb->args[1]);
8163         }
8164
8165         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8166         if (!rdev) {
8167                 err = -ENOENT;
8168                 goto out_err;
8169         }
8170
8171         if (!rdev->ops->testmode_dump) {
8172                 err = -EOPNOTSUPP;
8173                 goto out_err;
8174         }
8175
8176         while (1) {
8177                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8178                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
8179                                            NL80211_CMD_TESTMODE);
8180                 struct nlattr *tmdata;
8181
8182                 if (!hdr)
8183                         break;
8184
8185                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8186                         genlmsg_cancel(skb, hdr);
8187                         break;
8188                 }
8189
8190                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8191                 if (!tmdata) {
8192                         genlmsg_cancel(skb, hdr);
8193                         break;
8194                 }
8195                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8196                 nla_nest_end(skb, tmdata);
8197
8198                 if (err == -ENOBUFS || err == -ENOENT) {
8199                         genlmsg_cancel(skb, hdr);
8200                         break;
8201                 } else if (err) {
8202                         genlmsg_cancel(skb, hdr);
8203                         goto out_err;
8204                 }
8205
8206                 genlmsg_end(skb, hdr);
8207         }
8208
8209         err = skb->len;
8210         /* see above */
8211         cb->args[0] = phy_idx + 1;
8212  out_err:
8213         rtnl_unlock();
8214         return err;
8215 }
8216 #endif
8217
8218 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8219 {
8220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8221         struct net_device *dev = info->user_ptr[1];
8222         struct cfg80211_connect_params connect;
8223         struct wiphy *wiphy;
8224         struct cfg80211_cached_keys *connkeys = NULL;
8225         int err;
8226
8227         memset(&connect, 0, sizeof(connect));
8228
8229         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8230                 return -EINVAL;
8231
8232         if (!info->attrs[NL80211_ATTR_SSID] ||
8233             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8234                 return -EINVAL;
8235
8236         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8237                 connect.auth_type =
8238                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8239                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8240                                              NL80211_CMD_CONNECT))
8241                         return -EINVAL;
8242         } else
8243                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8244
8245         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8246
8247         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8248                                       NL80211_MAX_NR_CIPHER_SUITES);
8249         if (err)
8250                 return err;
8251
8252         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8253             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8254                 return -EOPNOTSUPP;
8255
8256         wiphy = &rdev->wiphy;
8257
8258         connect.bg_scan_period = -1;
8259         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8260                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8261                 connect.bg_scan_period =
8262                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8263         }
8264
8265         if (info->attrs[NL80211_ATTR_MAC])
8266                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8267         else if (info->attrs[NL80211_ATTR_MAC_HINT])
8268                 connect.bssid_hint =
8269                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8270         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8271         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8272
8273         if (info->attrs[NL80211_ATTR_IE]) {
8274                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8275                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8276         }
8277
8278         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8279                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8280                 if (connect.mfp != NL80211_MFP_REQUIRED &&
8281                     connect.mfp != NL80211_MFP_NO)
8282                         return -EINVAL;
8283         } else {
8284                 connect.mfp = NL80211_MFP_NO;
8285         }
8286
8287         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8288                 connect.prev_bssid =
8289                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8290
8291         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8292                 connect.channel = nl80211_get_valid_chan(
8293                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8294                 if (!connect.channel)
8295                         return -EINVAL;
8296         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8297                 connect.channel_hint = nl80211_get_valid_chan(
8298                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8299                 if (!connect.channel_hint)
8300                         return -EINVAL;
8301         }
8302
8303         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8304                 connkeys = nl80211_parse_connkeys(rdev,
8305                                           info->attrs[NL80211_ATTR_KEYS], NULL);
8306                 if (IS_ERR(connkeys))
8307                         return PTR_ERR(connkeys);
8308         }
8309
8310         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8311                 connect.flags |= ASSOC_REQ_DISABLE_HT;
8312
8313         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8314                 memcpy(&connect.ht_capa_mask,
8315                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8316                        sizeof(connect.ht_capa_mask));
8317
8318         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8319                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8320                         kzfree(connkeys);
8321                         return -EINVAL;
8322                 }
8323                 memcpy(&connect.ht_capa,
8324                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8325                        sizeof(connect.ht_capa));
8326         }
8327
8328         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8329                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8330
8331         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8332                 memcpy(&connect.vht_capa_mask,
8333                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8334                        sizeof(connect.vht_capa_mask));
8335
8336         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8337                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8338                         kzfree(connkeys);
8339                         return -EINVAL;
8340                 }
8341                 memcpy(&connect.vht_capa,
8342                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8343                        sizeof(connect.vht_capa));
8344         }
8345
8346         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8347                 if (!((rdev->wiphy.features &
8348                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8349                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8350                     !wiphy_ext_feature_isset(&rdev->wiphy,
8351                                              NL80211_EXT_FEATURE_RRM)) {
8352                         kzfree(connkeys);
8353                         return -EINVAL;
8354                 }
8355                 connect.flags |= ASSOC_REQ_USE_RRM;
8356         }
8357
8358         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8359         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8360                 kzfree(connkeys);
8361                 return -EOPNOTSUPP;
8362         }
8363
8364         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8365                 /* bss selection makes no sense if bssid is set */
8366                 if (connect.bssid) {
8367                         kzfree(connkeys);
8368                         return -EINVAL;
8369                 }
8370
8371                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8372                                        wiphy, &connect.bss_select);
8373                 if (err) {
8374                         kzfree(connkeys);
8375                         return err;
8376                 }
8377         }
8378
8379         wdev_lock(dev->ieee80211_ptr);
8380         err = cfg80211_connect(rdev, dev, &connect, connkeys,
8381                                connect.prev_bssid);
8382         wdev_unlock(dev->ieee80211_ptr);
8383         if (err)
8384                 kzfree(connkeys);
8385         return err;
8386 }
8387
8388 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8389 {
8390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8391         struct net_device *dev = info->user_ptr[1];
8392         u16 reason;
8393         int ret;
8394
8395         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8396                 reason = WLAN_REASON_DEAUTH_LEAVING;
8397         else
8398                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8399
8400         if (reason == 0)
8401                 return -EINVAL;
8402
8403         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8404             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8405                 return -EOPNOTSUPP;
8406
8407         wdev_lock(dev->ieee80211_ptr);
8408         ret = cfg80211_disconnect(rdev, dev, reason, true);
8409         wdev_unlock(dev->ieee80211_ptr);
8410         return ret;
8411 }
8412
8413 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8414 {
8415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8416         struct net *net;
8417         int err;
8418
8419         if (info->attrs[NL80211_ATTR_PID]) {
8420                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8421
8422                 net = get_net_ns_by_pid(pid);
8423         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8424                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8425
8426                 net = get_net_ns_by_fd(fd);
8427         } else {
8428                 return -EINVAL;
8429         }
8430
8431         if (IS_ERR(net))
8432                 return PTR_ERR(net);
8433
8434         err = 0;
8435
8436         /* check if anything to do */
8437         if (!net_eq(wiphy_net(&rdev->wiphy), net))
8438                 err = cfg80211_switch_netns(rdev, net);
8439
8440         put_net(net);
8441         return err;
8442 }
8443
8444 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8445 {
8446         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8447         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8448                         struct cfg80211_pmksa *pmksa) = NULL;
8449         struct net_device *dev = info->user_ptr[1];
8450         struct cfg80211_pmksa pmksa;
8451
8452         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8453
8454         if (!info->attrs[NL80211_ATTR_MAC])
8455                 return -EINVAL;
8456
8457         if (!info->attrs[NL80211_ATTR_PMKID])
8458                 return -EINVAL;
8459
8460         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8461         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8462
8463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8465                 return -EOPNOTSUPP;
8466
8467         switch (info->genlhdr->cmd) {
8468         case NL80211_CMD_SET_PMKSA:
8469                 rdev_ops = rdev->ops->set_pmksa;
8470                 break;
8471         case NL80211_CMD_DEL_PMKSA:
8472                 rdev_ops = rdev->ops->del_pmksa;
8473                 break;
8474         default:
8475                 WARN_ON(1);
8476                 break;
8477         }
8478
8479         if (!rdev_ops)
8480                 return -EOPNOTSUPP;
8481
8482         return rdev_ops(&rdev->wiphy, dev, &pmksa);
8483 }
8484
8485 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8486 {
8487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8488         struct net_device *dev = info->user_ptr[1];
8489
8490         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8491             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8492                 return -EOPNOTSUPP;
8493
8494         if (!rdev->ops->flush_pmksa)
8495                 return -EOPNOTSUPP;
8496
8497         return rdev_flush_pmksa(rdev, dev);
8498 }
8499
8500 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8501 {
8502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8503         struct net_device *dev = info->user_ptr[1];
8504         u8 action_code, dialog_token;
8505         u32 peer_capability = 0;
8506         u16 status_code;
8507         u8 *peer;
8508         bool initiator;
8509
8510         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8511             !rdev->ops->tdls_mgmt)
8512                 return -EOPNOTSUPP;
8513
8514         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8515             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8516             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8517             !info->attrs[NL80211_ATTR_IE] ||
8518             !info->attrs[NL80211_ATTR_MAC])
8519                 return -EINVAL;
8520
8521         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8522         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8523         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8524         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8525         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8526         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8527                 peer_capability =
8528                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8529
8530         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8531                               dialog_token, status_code, peer_capability,
8532                               initiator,
8533                               nla_data(info->attrs[NL80211_ATTR_IE]),
8534                               nla_len(info->attrs[NL80211_ATTR_IE]));
8535 }
8536
8537 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8538 {
8539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540         struct net_device *dev = info->user_ptr[1];
8541         enum nl80211_tdls_operation operation;
8542         u8 *peer;
8543
8544         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8545             !rdev->ops->tdls_oper)
8546                 return -EOPNOTSUPP;
8547
8548         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8549             !info->attrs[NL80211_ATTR_MAC])
8550                 return -EINVAL;
8551
8552         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8553         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8554
8555         return rdev_tdls_oper(rdev, dev, peer, operation);
8556 }
8557
8558 static int nl80211_remain_on_channel(struct sk_buff *skb,
8559                                      struct genl_info *info)
8560 {
8561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8562         struct wireless_dev *wdev = info->user_ptr[1];
8563         struct cfg80211_chan_def chandef;
8564         struct sk_buff *msg;
8565         void *hdr;
8566         u64 cookie;
8567         u32 duration;
8568         int err;
8569
8570         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8571             !info->attrs[NL80211_ATTR_DURATION])
8572                 return -EINVAL;
8573
8574         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8575
8576         if (!rdev->ops->remain_on_channel ||
8577             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8578                 return -EOPNOTSUPP;
8579
8580         /*
8581          * We should be on that channel for at least a minimum amount of
8582          * time (10ms) but no longer than the driver supports.
8583          */
8584         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8585             duration > rdev->wiphy.max_remain_on_channel_duration)
8586                 return -EINVAL;
8587
8588         err = nl80211_parse_chandef(rdev, info, &chandef);
8589         if (err)
8590                 return err;
8591
8592         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8593         if (!msg)
8594                 return -ENOMEM;
8595
8596         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8597                              NL80211_CMD_REMAIN_ON_CHANNEL);
8598         if (!hdr) {
8599                 err = -ENOBUFS;
8600                 goto free_msg;
8601         }
8602
8603         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8604                                      duration, &cookie);
8605
8606         if (err)
8607                 goto free_msg;
8608
8609         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8610                               NL80211_ATTR_PAD))
8611                 goto nla_put_failure;
8612
8613         genlmsg_end(msg, hdr);
8614
8615         return genlmsg_reply(msg, info);
8616
8617  nla_put_failure:
8618         err = -ENOBUFS;
8619  free_msg:
8620         nlmsg_free(msg);
8621         return err;
8622 }
8623
8624 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8625                                             struct genl_info *info)
8626 {
8627         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8628         struct wireless_dev *wdev = info->user_ptr[1];
8629         u64 cookie;
8630
8631         if (!info->attrs[NL80211_ATTR_COOKIE])
8632                 return -EINVAL;
8633
8634         if (!rdev->ops->cancel_remain_on_channel)
8635                 return -EOPNOTSUPP;
8636
8637         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8638
8639         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8640 }
8641
8642 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8643                            u8 *rates, u8 rates_len)
8644 {
8645         u8 i;
8646         u32 mask = 0;
8647
8648         for (i = 0; i < rates_len; i++) {
8649                 int rate = (rates[i] & 0x7f) * 5;
8650                 int ridx;
8651
8652                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8653                         struct ieee80211_rate *srate =
8654                                 &sband->bitrates[ridx];
8655                         if (rate == srate->bitrate) {
8656                                 mask |= 1 << ridx;
8657                                 break;
8658                         }
8659                 }
8660                 if (ridx == sband->n_bitrates)
8661                         return 0; /* rate not found */
8662         }
8663
8664         return mask;
8665 }
8666
8667 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8668                                u8 *rates, u8 rates_len,
8669                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8670 {
8671         u8 i;
8672
8673         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8674
8675         for (i = 0; i < rates_len; i++) {
8676                 int ridx, rbit;
8677
8678                 ridx = rates[i] / 8;
8679                 rbit = BIT(rates[i] % 8);
8680
8681                 /* check validity */
8682                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8683                         return false;
8684
8685                 /* check availability */
8686                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8687                         mcs[ridx] |= rbit;
8688                 else
8689                         return false;
8690         }
8691
8692         return true;
8693 }
8694
8695 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8696 {
8697         u16 mcs_mask = 0;
8698
8699         switch (vht_mcs_map) {
8700         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8701                 break;
8702         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8703                 mcs_mask = 0x00FF;
8704                 break;
8705         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8706                 mcs_mask = 0x01FF;
8707                 break;
8708         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8709                 mcs_mask = 0x03FF;
8710                 break;
8711         default:
8712                 break;
8713         }
8714
8715         return mcs_mask;
8716 }
8717
8718 static void vht_build_mcs_mask(u16 vht_mcs_map,
8719                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8720 {
8721         u8 nss;
8722
8723         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8724                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8725                 vht_mcs_map >>= 2;
8726         }
8727 }
8728
8729 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8730                              struct nl80211_txrate_vht *txrate,
8731                              u16 mcs[NL80211_VHT_NSS_MAX])
8732 {
8733         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8734         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8735         u8 i;
8736
8737         if (!sband->vht_cap.vht_supported)
8738                 return false;
8739
8740         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8741
8742         /* Build vht_mcs_mask from VHT capabilities */
8743         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8744
8745         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8746                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8747                         mcs[i] = txrate->mcs[i];
8748                 else
8749                         return false;
8750         }
8751
8752         return true;
8753 }
8754
8755 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8756         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8757                                     .len = NL80211_MAX_SUPP_RATES },
8758         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8759                                 .len = NL80211_MAX_SUPP_HT_RATES },
8760         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8761         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8762 };
8763
8764 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8765                                        struct genl_info *info)
8766 {
8767         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8769         struct cfg80211_bitrate_mask mask;
8770         int rem, i;
8771         struct net_device *dev = info->user_ptr[1];
8772         struct nlattr *tx_rates;
8773         struct ieee80211_supported_band *sband;
8774         u16 vht_tx_mcs_map;
8775
8776         if (!rdev->ops->set_bitrate_mask)
8777                 return -EOPNOTSUPP;
8778
8779         memset(&mask, 0, sizeof(mask));
8780         /* Default to all rates enabled */
8781         for (i = 0; i < NUM_NL80211_BANDS; i++) {
8782                 sband = rdev->wiphy.bands[i];
8783
8784                 if (!sband)
8785                         continue;
8786
8787                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8788                 memcpy(mask.control[i].ht_mcs,
8789                        sband->ht_cap.mcs.rx_mask,
8790                        sizeof(mask.control[i].ht_mcs));
8791
8792                 if (!sband->vht_cap.vht_supported)
8793                         continue;
8794
8795                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8796                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8797         }
8798
8799         /* if no rates are given set it back to the defaults */
8800         if (!info->attrs[NL80211_ATTR_TX_RATES])
8801                 goto out;
8802
8803         /*
8804          * The nested attribute uses enum nl80211_band as the index. This maps
8805          * directly to the enum nl80211_band values used in cfg80211.
8806          */
8807         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8808         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8809                 enum nl80211_band band = nla_type(tx_rates);
8810                 int err;
8811
8812                 if (band < 0 || band >= NUM_NL80211_BANDS)
8813                         return -EINVAL;
8814                 sband = rdev->wiphy.bands[band];
8815                 if (sband == NULL)
8816                         return -EINVAL;
8817                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8818                                 nla_len(tx_rates), nl80211_txattr_policy);
8819                 if (err)
8820                         return err;
8821                 if (tb[NL80211_TXRATE_LEGACY]) {
8822                         mask.control[band].legacy = rateset_to_mask(
8823                                 sband,
8824                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8825                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8826                         if ((mask.control[band].legacy == 0) &&
8827                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8828                                 return -EINVAL;
8829                 }
8830                 if (tb[NL80211_TXRATE_HT]) {
8831                         if (!ht_rateset_to_mask(
8832                                         sband,
8833                                         nla_data(tb[NL80211_TXRATE_HT]),
8834                                         nla_len(tb[NL80211_TXRATE_HT]),
8835                                         mask.control[band].ht_mcs))
8836                                 return -EINVAL;
8837                 }
8838                 if (tb[NL80211_TXRATE_VHT]) {
8839                         if (!vht_set_mcs_mask(
8840                                         sband,
8841                                         nla_data(tb[NL80211_TXRATE_VHT]),
8842                                         mask.control[band].vht_mcs))
8843                                 return -EINVAL;
8844                 }
8845                 if (tb[NL80211_TXRATE_GI]) {
8846                         mask.control[band].gi =
8847                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8848                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8849                                 return -EINVAL;
8850                 }
8851
8852                 if (mask.control[band].legacy == 0) {
8853                         /* don't allow empty legacy rates if HT or VHT
8854                          * are not even supported.
8855                          */
8856                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8857                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8858                                 return -EINVAL;
8859
8860                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8861                                 if (mask.control[band].ht_mcs[i])
8862                                         goto out;
8863
8864                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8865                                 if (mask.control[band].vht_mcs[i])
8866                                         goto out;
8867
8868                         /* legacy and mcs rates may not be both empty */
8869                         return -EINVAL;
8870                 }
8871         }
8872
8873 out:
8874         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8875 }
8876
8877 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8878 {
8879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8880         struct wireless_dev *wdev = info->user_ptr[1];
8881         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8882
8883         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8884                 return -EINVAL;
8885
8886         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8887                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8888
8889         switch (wdev->iftype) {
8890         case NL80211_IFTYPE_STATION:
8891         case NL80211_IFTYPE_ADHOC:
8892         case NL80211_IFTYPE_P2P_CLIENT:
8893         case NL80211_IFTYPE_AP:
8894         case NL80211_IFTYPE_AP_VLAN:
8895         case NL80211_IFTYPE_MESH_POINT:
8896         case NL80211_IFTYPE_P2P_GO:
8897         case NL80211_IFTYPE_P2P_DEVICE:
8898                 break;
8899         default:
8900                 return -EOPNOTSUPP;
8901         }
8902
8903         /* not much point in registering if we can't reply */
8904         if (!rdev->ops->mgmt_tx)
8905                 return -EOPNOTSUPP;
8906
8907         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8908                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8909                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8910 }
8911
8912 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8913 {
8914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8915         struct wireless_dev *wdev = info->user_ptr[1];
8916         struct cfg80211_chan_def chandef;
8917         int err;
8918         void *hdr = NULL;
8919         u64 cookie;
8920         struct sk_buff *msg = NULL;
8921         struct cfg80211_mgmt_tx_params params = {
8922                 .dont_wait_for_ack =
8923                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8924         };
8925
8926         if (!info->attrs[NL80211_ATTR_FRAME])
8927                 return -EINVAL;
8928
8929         if (!rdev->ops->mgmt_tx)
8930                 return -EOPNOTSUPP;
8931
8932         switch (wdev->iftype) {
8933         case NL80211_IFTYPE_P2P_DEVICE:
8934                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8935                         return -EINVAL;
8936         case NL80211_IFTYPE_STATION:
8937         case NL80211_IFTYPE_ADHOC:
8938         case NL80211_IFTYPE_P2P_CLIENT:
8939         case NL80211_IFTYPE_AP:
8940         case NL80211_IFTYPE_AP_VLAN:
8941         case NL80211_IFTYPE_MESH_POINT:
8942         case NL80211_IFTYPE_P2P_GO:
8943                 break;
8944         default:
8945                 return -EOPNOTSUPP;
8946         }
8947
8948         if (info->attrs[NL80211_ATTR_DURATION]) {
8949                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8950                         return -EINVAL;
8951                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8952
8953                 /*
8954                  * We should wait on the channel for at least a minimum amount
8955                  * of time (10ms) but no longer than the driver supports.
8956                  */
8957                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8958                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8959                         return -EINVAL;
8960         }
8961
8962         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8963
8964         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8965                 return -EINVAL;
8966
8967         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8968
8969         /* get the channel if any has been specified, otherwise pass NULL to
8970          * the driver. The latter will use the current one
8971          */
8972         chandef.chan = NULL;
8973         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8974                 err = nl80211_parse_chandef(rdev, info, &chandef);
8975                 if (err)
8976                         return err;
8977         }
8978
8979         if (!chandef.chan && params.offchan)
8980                 return -EINVAL;
8981
8982         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8983         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8984
8985         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8986                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8987                 int i;
8988
8989                 if (len % sizeof(u16))
8990                         return -EINVAL;
8991
8992                 params.n_csa_offsets = len / sizeof(u16);
8993                 params.csa_offsets =
8994                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8995
8996                 /* check that all the offsets fit the frame */
8997                 for (i = 0; i < params.n_csa_offsets; i++) {
8998                         if (params.csa_offsets[i] >= params.len)
8999                                 return -EINVAL;
9000                 }
9001         }
9002
9003         if (!params.dont_wait_for_ack) {
9004                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9005                 if (!msg)
9006                         return -ENOMEM;
9007
9008                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9009                                      NL80211_CMD_FRAME);
9010                 if (!hdr) {
9011                         err = -ENOBUFS;
9012                         goto free_msg;
9013                 }
9014         }
9015
9016         params.chan = chandef.chan;
9017         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9018         if (err)
9019                 goto free_msg;
9020
9021         if (msg) {
9022                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9023                                       NL80211_ATTR_PAD))
9024                         goto nla_put_failure;
9025
9026                 genlmsg_end(msg, hdr);
9027                 return genlmsg_reply(msg, info);
9028         }
9029
9030         return 0;
9031
9032  nla_put_failure:
9033         err = -ENOBUFS;
9034  free_msg:
9035         nlmsg_free(msg);
9036         return err;
9037 }
9038
9039 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9040 {
9041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9042         struct wireless_dev *wdev = info->user_ptr[1];
9043         u64 cookie;
9044
9045         if (!info->attrs[NL80211_ATTR_COOKIE])
9046                 return -EINVAL;
9047
9048         if (!rdev->ops->mgmt_tx_cancel_wait)
9049                 return -EOPNOTSUPP;
9050
9051         switch (wdev->iftype) {
9052         case NL80211_IFTYPE_STATION:
9053         case NL80211_IFTYPE_ADHOC:
9054         case NL80211_IFTYPE_P2P_CLIENT:
9055         case NL80211_IFTYPE_AP:
9056         case NL80211_IFTYPE_AP_VLAN:
9057         case NL80211_IFTYPE_P2P_GO:
9058         case NL80211_IFTYPE_P2P_DEVICE:
9059                 break;
9060         default:
9061                 return -EOPNOTSUPP;
9062         }
9063
9064         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9065
9066         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9067 }
9068
9069 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9070 {
9071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9072         struct wireless_dev *wdev;
9073         struct net_device *dev = info->user_ptr[1];
9074         u8 ps_state;
9075         bool state;
9076         int err;
9077
9078         if (!info->attrs[NL80211_ATTR_PS_STATE])
9079                 return -EINVAL;
9080
9081         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9082
9083         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9084                 return -EINVAL;
9085
9086         wdev = dev->ieee80211_ptr;
9087
9088         if (!rdev->ops->set_power_mgmt)
9089                 return -EOPNOTSUPP;
9090
9091         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9092
9093         if (state == wdev->ps)
9094                 return 0;
9095
9096         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9097         if (!err)
9098                 wdev->ps = state;
9099         return err;
9100 }
9101
9102 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9103 {
9104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9105         enum nl80211_ps_state ps_state;
9106         struct wireless_dev *wdev;
9107         struct net_device *dev = info->user_ptr[1];
9108         struct sk_buff *msg;
9109         void *hdr;
9110         int err;
9111
9112         wdev = dev->ieee80211_ptr;
9113
9114         if (!rdev->ops->set_power_mgmt)
9115                 return -EOPNOTSUPP;
9116
9117         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9118         if (!msg)
9119                 return -ENOMEM;
9120
9121         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9122                              NL80211_CMD_GET_POWER_SAVE);
9123         if (!hdr) {
9124                 err = -ENOBUFS;
9125                 goto free_msg;
9126         }
9127
9128         if (wdev->ps)
9129                 ps_state = NL80211_PS_ENABLED;
9130         else
9131                 ps_state = NL80211_PS_DISABLED;
9132
9133         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9134                 goto nla_put_failure;
9135
9136         genlmsg_end(msg, hdr);
9137         return genlmsg_reply(msg, info);
9138
9139  nla_put_failure:
9140         err = -ENOBUFS;
9141  free_msg:
9142         nlmsg_free(msg);
9143         return err;
9144 }
9145
9146 static const struct nla_policy
9147 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9148         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9149         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9150         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9151         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9152         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9153         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9154 };
9155
9156 static int nl80211_set_cqm_txe(struct genl_info *info,
9157                                u32 rate, u32 pkts, u32 intvl)
9158 {
9159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9160         struct net_device *dev = info->user_ptr[1];
9161         struct wireless_dev *wdev = dev->ieee80211_ptr;
9162
9163         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9164                 return -EINVAL;
9165
9166         if (!rdev->ops->set_cqm_txe_config)
9167                 return -EOPNOTSUPP;
9168
9169         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9170             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9171                 return -EOPNOTSUPP;
9172
9173         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9174 }
9175
9176 static int nl80211_set_cqm_rssi(struct genl_info *info,
9177                                 s32 threshold, u32 hysteresis)
9178 {
9179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9180         struct net_device *dev = info->user_ptr[1];
9181         struct wireless_dev *wdev = dev->ieee80211_ptr;
9182
9183         if (threshold > 0)
9184                 return -EINVAL;
9185
9186         /* disabling - hysteresis should also be zero then */
9187         if (threshold == 0)
9188                 hysteresis = 0;
9189
9190         if (!rdev->ops->set_cqm_rssi_config)
9191                 return -EOPNOTSUPP;
9192
9193         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9194             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9195                 return -EOPNOTSUPP;
9196
9197         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9198 }
9199
9200 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9201 {
9202         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9203         struct nlattr *cqm;
9204         int err;
9205
9206         cqm = info->attrs[NL80211_ATTR_CQM];
9207         if (!cqm)
9208                 return -EINVAL;
9209
9210         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9211                                nl80211_attr_cqm_policy);
9212         if (err)
9213                 return err;
9214
9215         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9216             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9217                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9218                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9219
9220                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9221         }
9222
9223         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9224             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9225             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9226                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9227                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9228                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9229
9230                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9231         }
9232
9233         return -EINVAL;
9234 }
9235
9236 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9237 {
9238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9239         struct net_device *dev = info->user_ptr[1];
9240         struct ocb_setup setup = {};
9241         int err;
9242
9243         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9244         if (err)
9245                 return err;
9246
9247         return cfg80211_join_ocb(rdev, dev, &setup);
9248 }
9249
9250 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9251 {
9252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9253         struct net_device *dev = info->user_ptr[1];
9254
9255         return cfg80211_leave_ocb(rdev, dev);
9256 }
9257
9258 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9259 {
9260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9261         struct net_device *dev = info->user_ptr[1];
9262         struct mesh_config cfg;
9263         struct mesh_setup setup;
9264         int err;
9265
9266         /* start with default */
9267         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9268         memcpy(&setup, &default_mesh_setup, sizeof(setup));
9269
9270         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9271                 /* and parse parameters if given */
9272                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9273                 if (err)
9274                         return err;
9275         }
9276
9277         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9278             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9279                 return -EINVAL;
9280
9281         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9282         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9283
9284         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9285             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9286                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9287                         return -EINVAL;
9288
9289         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9290                 setup.beacon_interval =
9291                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9292
9293                 err = cfg80211_validate_beacon_int(rdev, setup.beacon_interval);
9294                 if (err)
9295                         return err;
9296         }
9297
9298         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9299                 setup.dtim_period =
9300                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9301                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9302                         return -EINVAL;
9303         }
9304
9305         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9306                 /* parse additional setup parameters if given */
9307                 err = nl80211_parse_mesh_setup(info, &setup);
9308                 if (err)
9309                         return err;
9310         }
9311
9312         if (setup.user_mpm)
9313                 cfg.auto_open_plinks = false;
9314
9315         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9316                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9317                 if (err)
9318                         return err;
9319         } else {
9320                 /* cfg80211_join_mesh() will sort it out */
9321                 setup.chandef.chan = NULL;
9322         }
9323
9324         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9325                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9326                 int n_rates =
9327                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9328                 struct ieee80211_supported_band *sband;
9329
9330                 if (!setup.chandef.chan)
9331                         return -EINVAL;
9332
9333                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9334
9335                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9336                                              &setup.basic_rates);
9337                 if (err)
9338                         return err;
9339         }
9340
9341         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9342 }
9343
9344 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9345 {
9346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9347         struct net_device *dev = info->user_ptr[1];
9348
9349         return cfg80211_leave_mesh(rdev, dev);
9350 }
9351
9352 #ifdef CONFIG_PM
9353 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9354                                         struct cfg80211_registered_device *rdev)
9355 {
9356         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9357         struct nlattr *nl_pats, *nl_pat;
9358         int i, pat_len;
9359
9360         if (!wowlan->n_patterns)
9361                 return 0;
9362
9363         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9364         if (!nl_pats)
9365                 return -ENOBUFS;
9366
9367         for (i = 0; i < wowlan->n_patterns; i++) {
9368                 nl_pat = nla_nest_start(msg, i + 1);
9369                 if (!nl_pat)
9370                         return -ENOBUFS;
9371                 pat_len = wowlan->patterns[i].pattern_len;
9372                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9373                             wowlan->patterns[i].mask) ||
9374                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9375                             wowlan->patterns[i].pattern) ||
9376                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9377                                 wowlan->patterns[i].pkt_offset))
9378                         return -ENOBUFS;
9379                 nla_nest_end(msg, nl_pat);
9380         }
9381         nla_nest_end(msg, nl_pats);
9382
9383         return 0;
9384 }
9385
9386 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9387                                    struct cfg80211_wowlan_tcp *tcp)
9388 {
9389         struct nlattr *nl_tcp;
9390
9391         if (!tcp)
9392                 return 0;
9393
9394         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9395         if (!nl_tcp)
9396                 return -ENOBUFS;
9397
9398         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9399             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9400             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9401             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9402             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9403             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9404                     tcp->payload_len, tcp->payload) ||
9405             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9406                         tcp->data_interval) ||
9407             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9408                     tcp->wake_len, tcp->wake_data) ||
9409             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9410                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9411                 return -ENOBUFS;
9412
9413         if (tcp->payload_seq.len &&
9414             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9415                     sizeof(tcp->payload_seq), &tcp->payload_seq))
9416                 return -ENOBUFS;
9417
9418         if (tcp->payload_tok.len &&
9419             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9420                     sizeof(tcp->payload_tok) + tcp->tokens_size,
9421                     &tcp->payload_tok))
9422                 return -ENOBUFS;
9423
9424         nla_nest_end(msg, nl_tcp);
9425
9426         return 0;
9427 }
9428
9429 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9430                                   struct cfg80211_sched_scan_request *req)
9431 {
9432         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9433         int i;
9434
9435         if (!req)
9436                 return 0;
9437
9438         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9439         if (!nd)
9440                 return -ENOBUFS;
9441
9442         if (req->n_scan_plans == 1 &&
9443             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9444                         req->scan_plans[0].interval * 1000))
9445                 return -ENOBUFS;
9446
9447         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9448                 return -ENOBUFS;
9449
9450         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9451         if (!freqs)
9452                 return -ENOBUFS;
9453
9454         for (i = 0; i < req->n_channels; i++)
9455                 nla_put_u32(msg, i, req->channels[i]->center_freq);
9456
9457         nla_nest_end(msg, freqs);
9458
9459         if (req->n_match_sets) {
9460                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9461                 for (i = 0; i < req->n_match_sets; i++) {
9462                         match = nla_nest_start(msg, i);
9463                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9464                                 req->match_sets[i].ssid.ssid_len,
9465                                 req->match_sets[i].ssid.ssid);
9466                         nla_nest_end(msg, match);
9467                 }
9468                 nla_nest_end(msg, matches);
9469         }
9470
9471         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9472         if (!scan_plans)
9473                 return -ENOBUFS;
9474
9475         for (i = 0; i < req->n_scan_plans; i++) {
9476                 scan_plan = nla_nest_start(msg, i + 1);
9477                 if (!scan_plan ||
9478                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9479                                 req->scan_plans[i].interval) ||
9480                     (req->scan_plans[i].iterations &&
9481                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9482                                  req->scan_plans[i].iterations)))
9483                         return -ENOBUFS;
9484                 nla_nest_end(msg, scan_plan);
9485         }
9486         nla_nest_end(msg, scan_plans);
9487
9488         nla_nest_end(msg, nd);
9489
9490         return 0;
9491 }
9492
9493 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9494 {
9495         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9496         struct sk_buff *msg;
9497         void *hdr;
9498         u32 size = NLMSG_DEFAULT_SIZE;
9499
9500         if (!rdev->wiphy.wowlan)
9501                 return -EOPNOTSUPP;
9502
9503         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9504                 /* adjust size to have room for all the data */
9505                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9506                         rdev->wiphy.wowlan_config->tcp->payload_len +
9507                         rdev->wiphy.wowlan_config->tcp->wake_len +
9508                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9509         }
9510
9511         msg = nlmsg_new(size, GFP_KERNEL);
9512         if (!msg)
9513                 return -ENOMEM;
9514
9515         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9516                              NL80211_CMD_GET_WOWLAN);
9517         if (!hdr)
9518                 goto nla_put_failure;
9519
9520         if (rdev->wiphy.wowlan_config) {
9521                 struct nlattr *nl_wowlan;
9522
9523                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9524                 if (!nl_wowlan)
9525                         goto nla_put_failure;
9526
9527                 if ((rdev->wiphy.wowlan_config->any &&
9528                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9529                     (rdev->wiphy.wowlan_config->disconnect &&
9530                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9531                     (rdev->wiphy.wowlan_config->magic_pkt &&
9532                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9533                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9534                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9535                     (rdev->wiphy.wowlan_config->eap_identity_req &&
9536                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9537                     (rdev->wiphy.wowlan_config->four_way_handshake &&
9538                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9539                     (rdev->wiphy.wowlan_config->rfkill_release &&
9540                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9541                         goto nla_put_failure;
9542
9543                 if (nl80211_send_wowlan_patterns(msg, rdev))
9544                         goto nla_put_failure;
9545
9546                 if (nl80211_send_wowlan_tcp(msg,
9547                                             rdev->wiphy.wowlan_config->tcp))
9548                         goto nla_put_failure;
9549
9550                 if (nl80211_send_wowlan_nd(
9551                             msg,
9552                             rdev->wiphy.wowlan_config->nd_config))
9553                         goto nla_put_failure;
9554
9555                 nla_nest_end(msg, nl_wowlan);
9556         }
9557
9558         genlmsg_end(msg, hdr);
9559         return genlmsg_reply(msg, info);
9560
9561 nla_put_failure:
9562         nlmsg_free(msg);
9563         return -ENOBUFS;
9564 }
9565
9566 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9567                                     struct nlattr *attr,
9568                                     struct cfg80211_wowlan *trig)
9569 {
9570         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9571         struct cfg80211_wowlan_tcp *cfg;
9572         struct nl80211_wowlan_tcp_data_token *tok = NULL;
9573         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9574         u32 size;
9575         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9576         int err, port;
9577
9578         if (!rdev->wiphy.wowlan->tcp)
9579                 return -EINVAL;
9580
9581         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9582                         nla_data(attr), nla_len(attr),
9583                         nl80211_wowlan_tcp_policy);
9584         if (err)
9585                 return err;
9586
9587         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9588             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9589             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9590             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9591             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9592             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9593             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9594             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9595                 return -EINVAL;
9596
9597         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9598         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9599                 return -EINVAL;
9600
9601         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9602                         rdev->wiphy.wowlan->tcp->data_interval_max ||
9603             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9604                 return -EINVAL;
9605
9606         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9607         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9608                 return -EINVAL;
9609
9610         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9611         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9612                 return -EINVAL;
9613
9614         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9615                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9616
9617                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9618                 tokens_size = tokln - sizeof(*tok);
9619
9620                 if (!tok->len || tokens_size % tok->len)
9621                         return -EINVAL;
9622                 if (!rdev->wiphy.wowlan->tcp->tok)
9623                         return -EINVAL;
9624                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9625                         return -EINVAL;
9626                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9627                         return -EINVAL;
9628                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9629                         return -EINVAL;
9630                 if (tok->offset + tok->len > data_size)
9631                         return -EINVAL;
9632         }
9633
9634         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9635                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9636                 if (!rdev->wiphy.wowlan->tcp->seq)
9637                         return -EINVAL;
9638                 if (seq->len == 0 || seq->len > 4)
9639                         return -EINVAL;
9640                 if (seq->len + seq->offset > data_size)
9641                         return -EINVAL;
9642         }
9643
9644         size = sizeof(*cfg);
9645         size += data_size;
9646         size += wake_size + wake_mask_size;
9647         size += tokens_size;
9648
9649         cfg = kzalloc(size, GFP_KERNEL);
9650         if (!cfg)
9651                 return -ENOMEM;
9652         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9653         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9654         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9655                ETH_ALEN);
9656         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9657                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9658         else
9659                 port = 0;
9660 #ifdef CONFIG_INET
9661         /* allocate a socket and port for it and use it */
9662         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9663                             IPPROTO_TCP, &cfg->sock, 1);
9664         if (err) {
9665                 kfree(cfg);
9666                 return err;
9667         }
9668         if (inet_csk_get_port(cfg->sock->sk, port)) {
9669                 sock_release(cfg->sock);
9670                 kfree(cfg);
9671                 return -EADDRINUSE;
9672         }
9673         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9674 #else
9675         if (!port) {
9676                 kfree(cfg);
9677                 return -EINVAL;
9678         }
9679         cfg->src_port = port;
9680 #endif
9681
9682         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9683         cfg->payload_len = data_size;
9684         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9685         memcpy((void *)cfg->payload,
9686                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9687                data_size);
9688         if (seq)
9689                 cfg->payload_seq = *seq;
9690         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9691         cfg->wake_len = wake_size;
9692         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9693         memcpy((void *)cfg->wake_data,
9694                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9695                wake_size);
9696         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9697                          data_size + wake_size;
9698         memcpy((void *)cfg->wake_mask,
9699                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9700                wake_mask_size);
9701         if (tok) {
9702                 cfg->tokens_size = tokens_size;
9703                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9704         }
9705
9706         trig->tcp = cfg;
9707
9708         return 0;
9709 }
9710
9711 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9712                                    const struct wiphy_wowlan_support *wowlan,
9713                                    struct nlattr *attr,
9714                                    struct cfg80211_wowlan *trig)
9715 {
9716         struct nlattr **tb;
9717         int err;
9718
9719         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9720         if (!tb)
9721                 return -ENOMEM;
9722
9723         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9724                 err = -EOPNOTSUPP;
9725                 goto out;
9726         }
9727
9728         err = nla_parse(tb, NL80211_ATTR_MAX,
9729                         nla_data(attr), nla_len(attr),
9730                         nl80211_policy);
9731         if (err)
9732                 goto out;
9733
9734         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9735         err = PTR_ERR_OR_ZERO(trig->nd_config);
9736         if (err)
9737                 trig->nd_config = NULL;
9738
9739 out:
9740         kfree(tb);
9741         return err;
9742 }
9743
9744 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9745 {
9746         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9747         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9748         struct cfg80211_wowlan new_triggers = {};
9749         struct cfg80211_wowlan *ntrig;
9750         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9751         int err, i;
9752         bool prev_enabled = rdev->wiphy.wowlan_config;
9753         bool regular = false;
9754
9755         if (!wowlan)
9756                 return -EOPNOTSUPP;
9757
9758         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9759                 cfg80211_rdev_free_wowlan(rdev);
9760                 rdev->wiphy.wowlan_config = NULL;
9761                 goto set_wakeup;
9762         }
9763
9764         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9765                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9766                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9767                         nl80211_wowlan_policy);
9768         if (err)
9769                 return err;
9770
9771         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9772                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9773                         return -EINVAL;
9774                 new_triggers.any = true;
9775         }
9776
9777         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9778                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9779                         return -EINVAL;
9780                 new_triggers.disconnect = true;
9781                 regular = true;
9782         }
9783
9784         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9785                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9786                         return -EINVAL;
9787                 new_triggers.magic_pkt = true;
9788                 regular = true;
9789         }
9790
9791         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9792                 return -EINVAL;
9793
9794         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9795                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9796                         return -EINVAL;
9797                 new_triggers.gtk_rekey_failure = true;
9798                 regular = true;
9799         }
9800
9801         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9802                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9803                         return -EINVAL;
9804                 new_triggers.eap_identity_req = true;
9805                 regular = true;
9806         }
9807
9808         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9809                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9810                         return -EINVAL;
9811                 new_triggers.four_way_handshake = true;
9812                 regular = true;
9813         }
9814
9815         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9816                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9817                         return -EINVAL;
9818                 new_triggers.rfkill_release = true;
9819                 regular = true;
9820         }
9821
9822         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9823                 struct nlattr *pat;
9824                 int n_patterns = 0;
9825                 int rem, pat_len, mask_len, pkt_offset;
9826                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9827
9828                 regular = true;
9829
9830                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9831                                     rem)
9832                         n_patterns++;
9833                 if (n_patterns > wowlan->n_patterns)
9834                         return -EINVAL;
9835
9836                 new_triggers.patterns = kcalloc(n_patterns,
9837                                                 sizeof(new_triggers.patterns[0]),
9838                                                 GFP_KERNEL);
9839                 if (!new_triggers.patterns)
9840                         return -ENOMEM;
9841
9842                 new_triggers.n_patterns = n_patterns;
9843                 i = 0;
9844
9845                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9846                                     rem) {
9847                         u8 *mask_pat;
9848
9849                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9850                                   nla_len(pat), NULL);
9851                         err = -EINVAL;
9852                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9853                             !pat_tb[NL80211_PKTPAT_PATTERN])
9854                                 goto error;
9855                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9856                         mask_len = DIV_ROUND_UP(pat_len, 8);
9857                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9858                                 goto error;
9859                         if (pat_len > wowlan->pattern_max_len ||
9860                             pat_len < wowlan->pattern_min_len)
9861                                 goto error;
9862
9863                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9864                                 pkt_offset = 0;
9865                         else
9866                                 pkt_offset = nla_get_u32(
9867                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9868                         if (pkt_offset > wowlan->max_pkt_offset)
9869                                 goto error;
9870                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9871
9872                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9873                         if (!mask_pat) {
9874                                 err = -ENOMEM;
9875                                 goto error;
9876                         }
9877                         new_triggers.patterns[i].mask = mask_pat;
9878                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9879                                mask_len);
9880                         mask_pat += mask_len;
9881                         new_triggers.patterns[i].pattern = mask_pat;
9882                         new_triggers.patterns[i].pattern_len = pat_len;
9883                         memcpy(mask_pat,
9884                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9885                                pat_len);
9886                         i++;
9887                 }
9888         }
9889
9890         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9891                 regular = true;
9892                 err = nl80211_parse_wowlan_tcp(
9893                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9894                         &new_triggers);
9895                 if (err)
9896                         goto error;
9897         }
9898
9899         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9900                 regular = true;
9901                 err = nl80211_parse_wowlan_nd(
9902                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9903                         &new_triggers);
9904                 if (err)
9905                         goto error;
9906         }
9907
9908         /* The 'any' trigger means the device continues operating more or less
9909          * as in its normal operation mode and wakes up the host on most of the
9910          * normal interrupts (like packet RX, ...)
9911          * It therefore makes little sense to combine with the more constrained
9912          * wakeup trigger modes.
9913          */
9914         if (new_triggers.any && regular) {
9915                 err = -EINVAL;
9916                 goto error;
9917         }
9918
9919         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9920         if (!ntrig) {
9921                 err = -ENOMEM;
9922                 goto error;
9923         }
9924         cfg80211_rdev_free_wowlan(rdev);
9925         rdev->wiphy.wowlan_config = ntrig;
9926
9927  set_wakeup:
9928         if (rdev->ops->set_wakeup &&
9929             prev_enabled != !!rdev->wiphy.wowlan_config)
9930                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9931
9932         return 0;
9933  error:
9934         for (i = 0; i < new_triggers.n_patterns; i++)
9935                 kfree(new_triggers.patterns[i].mask);
9936         kfree(new_triggers.patterns);
9937         if (new_triggers.tcp && new_triggers.tcp->sock)
9938                 sock_release(new_triggers.tcp->sock);
9939         kfree(new_triggers.tcp);
9940         kfree(new_triggers.nd_config);
9941         return err;
9942 }
9943 #endif
9944
9945 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9946                                        struct cfg80211_registered_device *rdev)
9947 {
9948         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9949         int i, j, pat_len;
9950         struct cfg80211_coalesce_rules *rule;
9951
9952         if (!rdev->coalesce->n_rules)
9953                 return 0;
9954
9955         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9956         if (!nl_rules)
9957                 return -ENOBUFS;
9958
9959         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9960                 nl_rule = nla_nest_start(msg, i + 1);
9961                 if (!nl_rule)
9962                         return -ENOBUFS;
9963
9964                 rule = &rdev->coalesce->rules[i];
9965                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9966                                 rule->delay))
9967                         return -ENOBUFS;
9968
9969                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9970                                 rule->condition))
9971                         return -ENOBUFS;
9972
9973                 nl_pats = nla_nest_start(msg,
9974                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9975                 if (!nl_pats)
9976                         return -ENOBUFS;
9977
9978                 for (j = 0; j < rule->n_patterns; j++) {
9979                         nl_pat = nla_nest_start(msg, j + 1);
9980                         if (!nl_pat)
9981                                 return -ENOBUFS;
9982                         pat_len = rule->patterns[j].pattern_len;
9983                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9984                                     DIV_ROUND_UP(pat_len, 8),
9985                                     rule->patterns[j].mask) ||
9986                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9987                                     rule->patterns[j].pattern) ||
9988                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9989                                         rule->patterns[j].pkt_offset))
9990                                 return -ENOBUFS;
9991                         nla_nest_end(msg, nl_pat);
9992                 }
9993                 nla_nest_end(msg, nl_pats);
9994                 nla_nest_end(msg, nl_rule);
9995         }
9996         nla_nest_end(msg, nl_rules);
9997
9998         return 0;
9999 }
10000
10001 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10002 {
10003         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10004         struct sk_buff *msg;
10005         void *hdr;
10006
10007         if (!rdev->wiphy.coalesce)
10008                 return -EOPNOTSUPP;
10009
10010         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10011         if (!msg)
10012                 return -ENOMEM;
10013
10014         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10015                              NL80211_CMD_GET_COALESCE);
10016         if (!hdr)
10017                 goto nla_put_failure;
10018
10019         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10020                 goto nla_put_failure;
10021
10022         genlmsg_end(msg, hdr);
10023         return genlmsg_reply(msg, info);
10024
10025 nla_put_failure:
10026         nlmsg_free(msg);
10027         return -ENOBUFS;
10028 }
10029
10030 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10031 {
10032         struct cfg80211_coalesce *coalesce = rdev->coalesce;
10033         int i, j;
10034         struct cfg80211_coalesce_rules *rule;
10035
10036         if (!coalesce)
10037                 return;
10038
10039         for (i = 0; i < coalesce->n_rules; i++) {
10040                 rule = &coalesce->rules[i];
10041                 for (j = 0; j < rule->n_patterns; j++)
10042                         kfree(rule->patterns[j].mask);
10043                 kfree(rule->patterns);
10044         }
10045         kfree(coalesce->rules);
10046         kfree(coalesce);
10047         rdev->coalesce = NULL;
10048 }
10049
10050 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10051                                        struct nlattr *rule,
10052                                        struct cfg80211_coalesce_rules *new_rule)
10053 {
10054         int err, i;
10055         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10056         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10057         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10058         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10059
10060         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
10061                         nla_len(rule), nl80211_coalesce_policy);
10062         if (err)
10063                 return err;
10064
10065         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10066                 new_rule->delay =
10067                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10068         if (new_rule->delay > coalesce->max_delay)
10069                 return -EINVAL;
10070
10071         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10072                 new_rule->condition =
10073                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10074         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10075             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10076                 return -EINVAL;
10077
10078         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10079                 return -EINVAL;
10080
10081         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10082                             rem)
10083                 n_patterns++;
10084         if (n_patterns > coalesce->n_patterns)
10085                 return -EINVAL;
10086
10087         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10088                                      GFP_KERNEL);
10089         if (!new_rule->patterns)
10090                 return -ENOMEM;
10091
10092         new_rule->n_patterns = n_patterns;
10093         i = 0;
10094
10095         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10096                             rem) {
10097                 u8 *mask_pat;
10098
10099                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
10100                           nla_len(pat), NULL);
10101                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10102                     !pat_tb[NL80211_PKTPAT_PATTERN])
10103                         return -EINVAL;
10104                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10105                 mask_len = DIV_ROUND_UP(pat_len, 8);
10106                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10107                         return -EINVAL;
10108                 if (pat_len > coalesce->pattern_max_len ||
10109                     pat_len < coalesce->pattern_min_len)
10110                         return -EINVAL;
10111
10112                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10113                         pkt_offset = 0;
10114                 else
10115                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10116                 if (pkt_offset > coalesce->max_pkt_offset)
10117                         return -EINVAL;
10118                 new_rule->patterns[i].pkt_offset = pkt_offset;
10119
10120                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10121                 if (!mask_pat)
10122                         return -ENOMEM;
10123
10124                 new_rule->patterns[i].mask = mask_pat;
10125                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10126                        mask_len);
10127
10128                 mask_pat += mask_len;
10129                 new_rule->patterns[i].pattern = mask_pat;
10130                 new_rule->patterns[i].pattern_len = pat_len;
10131                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10132                        pat_len);
10133                 i++;
10134         }
10135
10136         return 0;
10137 }
10138
10139 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10140 {
10141         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10142         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10143         struct cfg80211_coalesce new_coalesce = {};
10144         struct cfg80211_coalesce *n_coalesce;
10145         int err, rem_rule, n_rules = 0, i, j;
10146         struct nlattr *rule;
10147         struct cfg80211_coalesce_rules *tmp_rule;
10148
10149         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10150                 return -EOPNOTSUPP;
10151
10152         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10153                 cfg80211_rdev_free_coalesce(rdev);
10154                 rdev_set_coalesce(rdev, NULL);
10155                 return 0;
10156         }
10157
10158         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10159                             rem_rule)
10160                 n_rules++;
10161         if (n_rules > coalesce->n_rules)
10162                 return -EINVAL;
10163
10164         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10165                                      GFP_KERNEL);
10166         if (!new_coalesce.rules)
10167                 return -ENOMEM;
10168
10169         new_coalesce.n_rules = n_rules;
10170         i = 0;
10171
10172         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10173                             rem_rule) {
10174                 err = nl80211_parse_coalesce_rule(rdev, rule,
10175                                                   &new_coalesce.rules[i]);
10176                 if (err)
10177                         goto error;
10178
10179                 i++;
10180         }
10181
10182         err = rdev_set_coalesce(rdev, &new_coalesce);
10183         if (err)
10184                 goto error;
10185
10186         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10187         if (!n_coalesce) {
10188                 err = -ENOMEM;
10189                 goto error;
10190         }
10191         cfg80211_rdev_free_coalesce(rdev);
10192         rdev->coalesce = n_coalesce;
10193
10194         return 0;
10195 error:
10196         for (i = 0; i < new_coalesce.n_rules; i++) {
10197                 tmp_rule = &new_coalesce.rules[i];
10198                 for (j = 0; j < tmp_rule->n_patterns; j++)
10199                         kfree(tmp_rule->patterns[j].mask);
10200                 kfree(tmp_rule->patterns);
10201         }
10202         kfree(new_coalesce.rules);
10203
10204         return err;
10205 }
10206
10207 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10208 {
10209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10210         struct net_device *dev = info->user_ptr[1];
10211         struct wireless_dev *wdev = dev->ieee80211_ptr;
10212         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10213         struct cfg80211_gtk_rekey_data rekey_data;
10214         int err;
10215
10216         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10217                 return -EINVAL;
10218
10219         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
10220                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
10221                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
10222                         nl80211_rekey_policy);
10223         if (err)
10224                 return err;
10225
10226         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10227                 return -ERANGE;
10228         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10229                 return -ERANGE;
10230         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10231                 return -ERANGE;
10232
10233         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10234         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10235         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10236
10237         wdev_lock(wdev);
10238         if (!wdev->current_bss) {
10239                 err = -ENOTCONN;
10240                 goto out;
10241         }
10242
10243         if (!rdev->ops->set_rekey_data) {
10244                 err = -EOPNOTSUPP;
10245                 goto out;
10246         }
10247
10248         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10249  out:
10250         wdev_unlock(wdev);
10251         return err;
10252 }
10253
10254 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10255                                              struct genl_info *info)
10256 {
10257         struct net_device *dev = info->user_ptr[1];
10258         struct wireless_dev *wdev = dev->ieee80211_ptr;
10259
10260         if (wdev->iftype != NL80211_IFTYPE_AP &&
10261             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10262                 return -EINVAL;
10263
10264         if (wdev->ap_unexpected_nlportid)
10265                 return -EBUSY;
10266
10267         wdev->ap_unexpected_nlportid = info->snd_portid;
10268         return 0;
10269 }
10270
10271 static int nl80211_probe_client(struct sk_buff *skb,
10272                                 struct genl_info *info)
10273 {
10274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10275         struct net_device *dev = info->user_ptr[1];
10276         struct wireless_dev *wdev = dev->ieee80211_ptr;
10277         struct sk_buff *msg;
10278         void *hdr;
10279         const u8 *addr;
10280         u64 cookie;
10281         int err;
10282
10283         if (wdev->iftype != NL80211_IFTYPE_AP &&
10284             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10285                 return -EOPNOTSUPP;
10286
10287         if (!info->attrs[NL80211_ATTR_MAC])
10288                 return -EINVAL;
10289
10290         if (!rdev->ops->probe_client)
10291                 return -EOPNOTSUPP;
10292
10293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10294         if (!msg)
10295                 return -ENOMEM;
10296
10297         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10298                              NL80211_CMD_PROBE_CLIENT);
10299         if (!hdr) {
10300                 err = -ENOBUFS;
10301                 goto free_msg;
10302         }
10303
10304         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10305
10306         err = rdev_probe_client(rdev, dev, addr, &cookie);
10307         if (err)
10308                 goto free_msg;
10309
10310         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10311                               NL80211_ATTR_PAD))
10312                 goto nla_put_failure;
10313
10314         genlmsg_end(msg, hdr);
10315
10316         return genlmsg_reply(msg, info);
10317
10318  nla_put_failure:
10319         err = -ENOBUFS;
10320  free_msg:
10321         nlmsg_free(msg);
10322         return err;
10323 }
10324
10325 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10326 {
10327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10328         struct cfg80211_beacon_registration *reg, *nreg;
10329         int rv;
10330
10331         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10332                 return -EOPNOTSUPP;
10333
10334         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10335         if (!nreg)
10336                 return -ENOMEM;
10337
10338         /* First, check if already registered. */
10339         spin_lock_bh(&rdev->beacon_registrations_lock);
10340         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10341                 if (reg->nlportid == info->snd_portid) {
10342                         rv = -EALREADY;
10343                         goto out_err;
10344                 }
10345         }
10346         /* Add it to the list */
10347         nreg->nlportid = info->snd_portid;
10348         list_add(&nreg->list, &rdev->beacon_registrations);
10349
10350         spin_unlock_bh(&rdev->beacon_registrations_lock);
10351
10352         return 0;
10353 out_err:
10354         spin_unlock_bh(&rdev->beacon_registrations_lock);
10355         kfree(nreg);
10356         return rv;
10357 }
10358
10359 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10360 {
10361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10362         struct wireless_dev *wdev = info->user_ptr[1];
10363         int err;
10364
10365         if (!rdev->ops->start_p2p_device)
10366                 return -EOPNOTSUPP;
10367
10368         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10369                 return -EOPNOTSUPP;
10370
10371         if (wdev->p2p_started)
10372                 return 0;
10373
10374         if (rfkill_blocked(rdev->rfkill))
10375                 return -ERFKILL;
10376
10377         err = rdev_start_p2p_device(rdev, wdev);
10378         if (err)
10379                 return err;
10380
10381         wdev->p2p_started = true;
10382         rdev->opencount++;
10383
10384         return 0;
10385 }
10386
10387 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10388 {
10389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10390         struct wireless_dev *wdev = info->user_ptr[1];
10391
10392         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10393                 return -EOPNOTSUPP;
10394
10395         if (!rdev->ops->stop_p2p_device)
10396                 return -EOPNOTSUPP;
10397
10398         cfg80211_stop_p2p_device(rdev, wdev);
10399
10400         return 0;
10401 }
10402
10403 static int nl80211_get_protocol_features(struct sk_buff *skb,
10404                                          struct genl_info *info)
10405 {
10406         void *hdr;
10407         struct sk_buff *msg;
10408
10409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10410         if (!msg)
10411                 return -ENOMEM;
10412
10413         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10414                              NL80211_CMD_GET_PROTOCOL_FEATURES);
10415         if (!hdr)
10416                 goto nla_put_failure;
10417
10418         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10419                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10420                 goto nla_put_failure;
10421
10422         genlmsg_end(msg, hdr);
10423         return genlmsg_reply(msg, info);
10424
10425  nla_put_failure:
10426         kfree_skb(msg);
10427         return -ENOBUFS;
10428 }
10429
10430 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10431 {
10432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10433         struct cfg80211_update_ft_ies_params ft_params;
10434         struct net_device *dev = info->user_ptr[1];
10435
10436         if (!rdev->ops->update_ft_ies)
10437                 return -EOPNOTSUPP;
10438
10439         if (!info->attrs[NL80211_ATTR_MDID] ||
10440             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10441                 return -EINVAL;
10442
10443         memset(&ft_params, 0, sizeof(ft_params));
10444         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10445         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10446         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10447
10448         return rdev_update_ft_ies(rdev, dev, &ft_params);
10449 }
10450
10451 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10452                                        struct genl_info *info)
10453 {
10454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10455         struct wireless_dev *wdev = info->user_ptr[1];
10456         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10457         u16 duration;
10458         int ret;
10459
10460         if (!rdev->ops->crit_proto_start)
10461                 return -EOPNOTSUPP;
10462
10463         if (WARN_ON(!rdev->ops->crit_proto_stop))
10464                 return -EINVAL;
10465
10466         if (rdev->crit_proto_nlportid)
10467                 return -EBUSY;
10468
10469         /* determine protocol if provided */
10470         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10471                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10472
10473         if (proto >= NUM_NL80211_CRIT_PROTO)
10474                 return -EINVAL;
10475
10476         /* timeout must be provided */
10477         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10478                 return -EINVAL;
10479
10480         duration =
10481                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10482
10483         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10484                 return -ERANGE;
10485
10486         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10487         if (!ret)
10488                 rdev->crit_proto_nlportid = info->snd_portid;
10489
10490         return ret;
10491 }
10492
10493 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10494                                       struct genl_info *info)
10495 {
10496         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10497         struct wireless_dev *wdev = info->user_ptr[1];
10498
10499         if (!rdev->ops->crit_proto_stop)
10500                 return -EOPNOTSUPP;
10501
10502         if (rdev->crit_proto_nlportid) {
10503                 rdev->crit_proto_nlportid = 0;
10504                 rdev_crit_proto_stop(rdev, wdev);
10505         }
10506         return 0;
10507 }
10508
10509 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10510 {
10511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10512         struct wireless_dev *wdev =
10513                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10514         int i, err;
10515         u32 vid, subcmd;
10516
10517         if (!rdev->wiphy.vendor_commands)
10518                 return -EOPNOTSUPP;
10519
10520         if (IS_ERR(wdev)) {
10521                 err = PTR_ERR(wdev);
10522                 if (err != -EINVAL)
10523                         return err;
10524                 wdev = NULL;
10525         } else if (wdev->wiphy != &rdev->wiphy) {
10526                 return -EINVAL;
10527         }
10528
10529         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10530             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10531                 return -EINVAL;
10532
10533         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10534         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10535         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10536                 const struct wiphy_vendor_command *vcmd;
10537                 void *data = NULL;
10538                 int len = 0;
10539
10540                 vcmd = &rdev->wiphy.vendor_commands[i];
10541
10542                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10543                         continue;
10544
10545                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10546                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10547                         if (!wdev)
10548                                 return -EINVAL;
10549                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10550                             !wdev->netdev)
10551                                 return -EINVAL;
10552
10553                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10554                                 if (wdev->netdev &&
10555                                     !netif_running(wdev->netdev))
10556                                         return -ENETDOWN;
10557                                 if (!wdev->netdev && !wdev->p2p_started)
10558                                         return -ENETDOWN;
10559                         }
10560
10561                         if (!vcmd->doit)
10562                                 return -EOPNOTSUPP;
10563                 } else {
10564                         wdev = NULL;
10565                 }
10566
10567                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10568                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10569                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10570                 }
10571
10572                 rdev->cur_cmd_info = info;
10573                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10574                                                           data, len);
10575                 rdev->cur_cmd_info = NULL;
10576                 return err;
10577         }
10578
10579         return -EOPNOTSUPP;
10580 }
10581
10582 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10583                                        struct netlink_callback *cb,
10584                                        struct cfg80211_registered_device **rdev,
10585                                        struct wireless_dev **wdev)
10586 {
10587         u32 vid, subcmd;
10588         unsigned int i;
10589         int vcmd_idx = -1;
10590         int err;
10591         void *data = NULL;
10592         unsigned int data_len = 0;
10593
10594         rtnl_lock();
10595
10596         if (cb->args[0]) {
10597                 /* subtract the 1 again here */
10598                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10599                 struct wireless_dev *tmp;
10600
10601                 if (!wiphy) {
10602                         err = -ENODEV;
10603                         goto out_unlock;
10604                 }
10605                 *rdev = wiphy_to_rdev(wiphy);
10606                 *wdev = NULL;
10607
10608                 if (cb->args[1]) {
10609                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
10610                                 if (tmp->identifier == cb->args[1] - 1) {
10611                                         *wdev = tmp;
10612                                         break;
10613                                 }
10614                         }
10615                 }
10616
10617                 /* keep rtnl locked in successful case */
10618                 return 0;
10619         }
10620
10621         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10622                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
10623                           nl80211_policy);
10624         if (err)
10625                 goto out_unlock;
10626
10627         if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10628             !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10629                 err = -EINVAL;
10630                 goto out_unlock;
10631         }
10632
10633         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10634                                            nl80211_fam.attrbuf);
10635         if (IS_ERR(*wdev))
10636                 *wdev = NULL;
10637
10638         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10639                                            nl80211_fam.attrbuf);
10640         if (IS_ERR(*rdev)) {
10641                 err = PTR_ERR(*rdev);
10642                 goto out_unlock;
10643         }
10644
10645         vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10646         subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10647
10648         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10649                 const struct wiphy_vendor_command *vcmd;
10650
10651                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10652
10653                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10654                         continue;
10655
10656                 if (!vcmd->dumpit) {
10657                         err = -EOPNOTSUPP;
10658                         goto out_unlock;
10659                 }
10660
10661                 vcmd_idx = i;
10662                 break;
10663         }
10664
10665         if (vcmd_idx < 0) {
10666                 err = -EOPNOTSUPP;
10667                 goto out_unlock;
10668         }
10669
10670         if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10671                 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10672                 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10673         }
10674
10675         /* 0 is the first index - add 1 to parse only once */
10676         cb->args[0] = (*rdev)->wiphy_idx + 1;
10677         /* add 1 to know if it was NULL */
10678         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10679         cb->args[2] = vcmd_idx;
10680         cb->args[3] = (unsigned long)data;
10681         cb->args[4] = data_len;
10682
10683         /* keep rtnl locked in successful case */
10684         return 0;
10685  out_unlock:
10686         rtnl_unlock();
10687         return err;
10688 }
10689
10690 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10691                                    struct netlink_callback *cb)
10692 {
10693         struct cfg80211_registered_device *rdev;
10694         struct wireless_dev *wdev;
10695         unsigned int vcmd_idx;
10696         const struct wiphy_vendor_command *vcmd;
10697         void *data;
10698         int data_len;
10699         int err;
10700         struct nlattr *vendor_data;
10701
10702         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10703         if (err)
10704                 return err;
10705
10706         vcmd_idx = cb->args[2];
10707         data = (void *)cb->args[3];
10708         data_len = cb->args[4];
10709         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10710
10711         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10712                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10713                 if (!wdev)
10714                         return -EINVAL;
10715                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10716                     !wdev->netdev)
10717                         return -EINVAL;
10718
10719                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10720                         if (wdev->netdev &&
10721                             !netif_running(wdev->netdev))
10722                                 return -ENETDOWN;
10723                         if (!wdev->netdev && !wdev->p2p_started)
10724                                 return -ENETDOWN;
10725                 }
10726         }
10727
10728         while (1) {
10729                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10730                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10731                                            NL80211_CMD_VENDOR);
10732                 if (!hdr)
10733                         break;
10734
10735                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10736                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10737                                                wdev_id(wdev),
10738                                                NL80211_ATTR_PAD))) {
10739                         genlmsg_cancel(skb, hdr);
10740                         break;
10741                 }
10742
10743                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10744                 if (!vendor_data) {
10745                         genlmsg_cancel(skb, hdr);
10746                         break;
10747                 }
10748
10749                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10750                                    (unsigned long *)&cb->args[5]);
10751                 nla_nest_end(skb, vendor_data);
10752
10753                 if (err == -ENOBUFS || err == -ENOENT) {
10754                         genlmsg_cancel(skb, hdr);
10755                         break;
10756                 } else if (err) {
10757                         genlmsg_cancel(skb, hdr);
10758                         goto out;
10759                 }
10760
10761                 genlmsg_end(skb, hdr);
10762         }
10763
10764         err = skb->len;
10765  out:
10766         rtnl_unlock();
10767         return err;
10768 }
10769
10770 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10771                                            enum nl80211_commands cmd,
10772                                            enum nl80211_attrs attr,
10773                                            int approxlen)
10774 {
10775         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10776
10777         if (WARN_ON(!rdev->cur_cmd_info))
10778                 return NULL;
10779
10780         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10781                                            rdev->cur_cmd_info->snd_portid,
10782                                            rdev->cur_cmd_info->snd_seq,
10783                                            cmd, attr, NULL, GFP_KERNEL);
10784 }
10785 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10786
10787 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10788 {
10789         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10790         void *hdr = ((void **)skb->cb)[1];
10791         struct nlattr *data = ((void **)skb->cb)[2];
10792
10793         /* clear CB data for netlink core to own from now on */
10794         memset(skb->cb, 0, sizeof(skb->cb));
10795
10796         if (WARN_ON(!rdev->cur_cmd_info)) {
10797                 kfree_skb(skb);
10798                 return -EINVAL;
10799         }
10800
10801         nla_nest_end(skb, data);
10802         genlmsg_end(skb, hdr);
10803         return genlmsg_reply(skb, rdev->cur_cmd_info);
10804 }
10805 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10806
10807 static int nl80211_set_qos_map(struct sk_buff *skb,
10808                                struct genl_info *info)
10809 {
10810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10811         struct cfg80211_qos_map *qos_map = NULL;
10812         struct net_device *dev = info->user_ptr[1];
10813         u8 *pos, len, num_des, des_len, des;
10814         int ret;
10815
10816         if (!rdev->ops->set_qos_map)
10817                 return -EOPNOTSUPP;
10818
10819         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10820                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10821                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10822
10823                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10824                     len > IEEE80211_QOS_MAP_LEN_MAX)
10825                         return -EINVAL;
10826
10827                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10828                 if (!qos_map)
10829                         return -ENOMEM;
10830
10831                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10832                 if (num_des) {
10833                         des_len = num_des *
10834                                 sizeof(struct cfg80211_dscp_exception);
10835                         memcpy(qos_map->dscp_exception, pos, des_len);
10836                         qos_map->num_des = num_des;
10837                         for (des = 0; des < num_des; des++) {
10838                                 if (qos_map->dscp_exception[des].up > 7) {
10839                                         kfree(qos_map);
10840                                         return -EINVAL;
10841                                 }
10842                         }
10843                         pos += des_len;
10844                 }
10845                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10846         }
10847
10848         wdev_lock(dev->ieee80211_ptr);
10849         ret = nl80211_key_allowed(dev->ieee80211_ptr);
10850         if (!ret)
10851                 ret = rdev_set_qos_map(rdev, dev, qos_map);
10852         wdev_unlock(dev->ieee80211_ptr);
10853
10854         kfree(qos_map);
10855         return ret;
10856 }
10857
10858 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10859 {
10860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10861         struct net_device *dev = info->user_ptr[1];
10862         struct wireless_dev *wdev = dev->ieee80211_ptr;
10863         const u8 *peer;
10864         u8 tsid, up;
10865         u16 admitted_time = 0;
10866         int err;
10867
10868         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10869                 return -EOPNOTSUPP;
10870
10871         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10872             !info->attrs[NL80211_ATTR_USER_PRIO])
10873                 return -EINVAL;
10874
10875         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10876         if (tsid >= IEEE80211_NUM_TIDS)
10877                 return -EINVAL;
10878
10879         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10880         if (up >= IEEE80211_NUM_UPS)
10881                 return -EINVAL;
10882
10883         /* WMM uses TIDs 0-7 even for TSPEC */
10884         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10885                 /* TODO: handle 802.11 TSPEC/admission control
10886                  * need more attributes for that (e.g. BA session requirement);
10887                  * change the WMM adminssion test above to allow both then
10888                  */
10889                 return -EINVAL;
10890         }
10891
10892         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10893
10894         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10895                 admitted_time =
10896                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10897                 if (!admitted_time)
10898                         return -EINVAL;
10899         }
10900
10901         wdev_lock(wdev);
10902         switch (wdev->iftype) {
10903         case NL80211_IFTYPE_STATION:
10904         case NL80211_IFTYPE_P2P_CLIENT:
10905                 if (wdev->current_bss)
10906                         break;
10907                 err = -ENOTCONN;
10908                 goto out;
10909         default:
10910                 err = -EOPNOTSUPP;
10911                 goto out;
10912         }
10913
10914         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10915
10916  out:
10917         wdev_unlock(wdev);
10918         return err;
10919 }
10920
10921 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10922 {
10923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10924         struct net_device *dev = info->user_ptr[1];
10925         struct wireless_dev *wdev = dev->ieee80211_ptr;
10926         const u8 *peer;
10927         u8 tsid;
10928         int err;
10929
10930         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10931                 return -EINVAL;
10932
10933         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10934         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10935
10936         wdev_lock(wdev);
10937         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10938         wdev_unlock(wdev);
10939
10940         return err;
10941 }
10942
10943 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10944                                        struct genl_info *info)
10945 {
10946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10947         struct net_device *dev = info->user_ptr[1];
10948         struct wireless_dev *wdev = dev->ieee80211_ptr;
10949         struct cfg80211_chan_def chandef = {};
10950         const u8 *addr;
10951         u8 oper_class;
10952         int err;
10953
10954         if (!rdev->ops->tdls_channel_switch ||
10955             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10956                 return -EOPNOTSUPP;
10957
10958         switch (dev->ieee80211_ptr->iftype) {
10959         case NL80211_IFTYPE_STATION:
10960         case NL80211_IFTYPE_P2P_CLIENT:
10961                 break;
10962         default:
10963                 return -EOPNOTSUPP;
10964         }
10965
10966         if (!info->attrs[NL80211_ATTR_MAC] ||
10967             !info->attrs[NL80211_ATTR_OPER_CLASS])
10968                 return -EINVAL;
10969
10970         err = nl80211_parse_chandef(rdev, info, &chandef);
10971         if (err)
10972                 return err;
10973
10974         /*
10975          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10976          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10977          * specification is not defined for them.
10978          */
10979         if (chandef.chan->band == NL80211_BAND_2GHZ &&
10980             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10981             chandef.width != NL80211_CHAN_WIDTH_20)
10982                 return -EINVAL;
10983
10984         /* we will be active on the TDLS link */
10985         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10986                                            wdev->iftype))
10987                 return -EINVAL;
10988
10989         /* don't allow switching to DFS channels */
10990         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10991                 return -EINVAL;
10992
10993         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10994         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10995
10996         wdev_lock(wdev);
10997         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10998         wdev_unlock(wdev);
10999
11000         return err;
11001 }
11002
11003 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11004                                               struct genl_info *info)
11005 {
11006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11007         struct net_device *dev = info->user_ptr[1];
11008         struct wireless_dev *wdev = dev->ieee80211_ptr;
11009         const u8 *addr;
11010
11011         if (!rdev->ops->tdls_channel_switch ||
11012             !rdev->ops->tdls_cancel_channel_switch ||
11013             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11014                 return -EOPNOTSUPP;
11015
11016         switch (dev->ieee80211_ptr->iftype) {
11017         case NL80211_IFTYPE_STATION:
11018         case NL80211_IFTYPE_P2P_CLIENT:
11019                 break;
11020         default:
11021                 return -EOPNOTSUPP;
11022         }
11023
11024         if (!info->attrs[NL80211_ATTR_MAC])
11025                 return -EINVAL;
11026
11027         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11028
11029         wdev_lock(wdev);
11030         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11031         wdev_unlock(wdev);
11032
11033         return 0;
11034 }
11035
11036 #define NL80211_FLAG_NEED_WIPHY         0x01
11037 #define NL80211_FLAG_NEED_NETDEV        0x02
11038 #define NL80211_FLAG_NEED_RTNL          0x04
11039 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
11040 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
11041                                          NL80211_FLAG_CHECK_NETDEV_UP)
11042 #define NL80211_FLAG_NEED_WDEV          0x10
11043 /* If a netdev is associated, it must be UP, P2P must be started */
11044 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
11045                                          NL80211_FLAG_CHECK_NETDEV_UP)
11046 #define NL80211_FLAG_CLEAR_SKB          0x20
11047
11048 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11049                             struct genl_info *info)
11050 {
11051         struct cfg80211_registered_device *rdev;
11052         struct wireless_dev *wdev;
11053         struct net_device *dev;
11054         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11055
11056         if (rtnl)
11057                 rtnl_lock();
11058
11059         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11060                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11061                 if (IS_ERR(rdev)) {
11062                         if (rtnl)
11063                                 rtnl_unlock();
11064                         return PTR_ERR(rdev);
11065                 }
11066                 info->user_ptr[0] = rdev;
11067         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11068                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11069                 ASSERT_RTNL();
11070
11071                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11072                                                   info->attrs);
11073                 if (IS_ERR(wdev)) {
11074                         if (rtnl)
11075                                 rtnl_unlock();
11076                         return PTR_ERR(wdev);
11077                 }
11078
11079                 dev = wdev->netdev;
11080                 rdev = wiphy_to_rdev(wdev->wiphy);
11081
11082                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11083                         if (!dev) {
11084                                 if (rtnl)
11085                                         rtnl_unlock();
11086                                 return -EINVAL;
11087                         }
11088
11089                         info->user_ptr[1] = dev;
11090                 } else {
11091                         info->user_ptr[1] = wdev;
11092                 }
11093
11094                 if (dev) {
11095                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11096                             !netif_running(dev)) {
11097                                 if (rtnl)
11098                                         rtnl_unlock();
11099                                 return -ENETDOWN;
11100                         }
11101
11102                         dev_hold(dev);
11103                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
11104                         if (!wdev->p2p_started) {
11105                                 if (rtnl)
11106                                         rtnl_unlock();
11107                                 return -ENETDOWN;
11108                         }
11109                 }
11110
11111                 info->user_ptr[0] = rdev;
11112         }
11113
11114         return 0;
11115 }
11116
11117 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11118                               struct genl_info *info)
11119 {
11120         if (info->user_ptr[1]) {
11121                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11122                         struct wireless_dev *wdev = info->user_ptr[1];
11123
11124                         if (wdev->netdev)
11125                                 dev_put(wdev->netdev);
11126                 } else {
11127                         dev_put(info->user_ptr[1]);
11128                 }
11129         }
11130
11131         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11132                 rtnl_unlock();
11133
11134         /* If needed, clear the netlink message payload from the SKB
11135          * as it might contain key data that shouldn't stick around on
11136          * the heap after the SKB is freed. The netlink message header
11137          * is still needed for further processing, so leave it intact.
11138          */
11139         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11140                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11141
11142                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11143         }
11144 }
11145
11146 static const struct genl_ops nl80211_ops[] = {
11147         {
11148                 .cmd = NL80211_CMD_GET_WIPHY,
11149                 .doit = nl80211_get_wiphy,
11150                 .dumpit = nl80211_dump_wiphy,
11151                 .done = nl80211_dump_wiphy_done,
11152                 .policy = nl80211_policy,
11153                 /* can be retrieved by unprivileged users */
11154                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11155                                   NL80211_FLAG_NEED_RTNL,
11156         },
11157         {
11158                 .cmd = NL80211_CMD_SET_WIPHY,
11159                 .doit = nl80211_set_wiphy,
11160                 .policy = nl80211_policy,
11161                 .flags = GENL_UNS_ADMIN_PERM,
11162                 .internal_flags = NL80211_FLAG_NEED_RTNL,
11163         },
11164         {
11165                 .cmd = NL80211_CMD_GET_INTERFACE,
11166                 .doit = nl80211_get_interface,
11167                 .dumpit = nl80211_dump_interface,
11168                 .policy = nl80211_policy,
11169                 /* can be retrieved by unprivileged users */
11170                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11171                                   NL80211_FLAG_NEED_RTNL,
11172         },
11173         {
11174                 .cmd = NL80211_CMD_SET_INTERFACE,
11175                 .doit = nl80211_set_interface,
11176                 .policy = nl80211_policy,
11177                 .flags = GENL_UNS_ADMIN_PERM,
11178                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11179                                   NL80211_FLAG_NEED_RTNL,
11180         },
11181         {
11182                 .cmd = NL80211_CMD_NEW_INTERFACE,
11183                 .doit = nl80211_new_interface,
11184                 .policy = nl80211_policy,
11185                 .flags = GENL_UNS_ADMIN_PERM,
11186                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11187                                   NL80211_FLAG_NEED_RTNL,
11188         },
11189         {
11190                 .cmd = NL80211_CMD_DEL_INTERFACE,
11191                 .doit = nl80211_del_interface,
11192                 .policy = nl80211_policy,
11193                 .flags = GENL_UNS_ADMIN_PERM,
11194                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11195                                   NL80211_FLAG_NEED_RTNL,
11196         },
11197         {
11198                 .cmd = NL80211_CMD_GET_KEY,
11199                 .doit = nl80211_get_key,
11200                 .policy = nl80211_policy,
11201                 .flags = GENL_UNS_ADMIN_PERM,
11202                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11203                                   NL80211_FLAG_NEED_RTNL,
11204         },
11205         {
11206                 .cmd = NL80211_CMD_SET_KEY,
11207                 .doit = nl80211_set_key,
11208                 .policy = nl80211_policy,
11209                 .flags = GENL_UNS_ADMIN_PERM,
11210                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11211                                   NL80211_FLAG_NEED_RTNL |
11212                                   NL80211_FLAG_CLEAR_SKB,
11213         },
11214         {
11215                 .cmd = NL80211_CMD_NEW_KEY,
11216                 .doit = nl80211_new_key,
11217                 .policy = nl80211_policy,
11218                 .flags = GENL_UNS_ADMIN_PERM,
11219                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11220                                   NL80211_FLAG_NEED_RTNL |
11221                                   NL80211_FLAG_CLEAR_SKB,
11222         },
11223         {
11224                 .cmd = NL80211_CMD_DEL_KEY,
11225                 .doit = nl80211_del_key,
11226                 .policy = nl80211_policy,
11227                 .flags = GENL_UNS_ADMIN_PERM,
11228                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11229                                   NL80211_FLAG_NEED_RTNL,
11230         },
11231         {
11232                 .cmd = NL80211_CMD_SET_BEACON,
11233                 .policy = nl80211_policy,
11234                 .flags = GENL_UNS_ADMIN_PERM,
11235                 .doit = nl80211_set_beacon,
11236                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11237                                   NL80211_FLAG_NEED_RTNL,
11238         },
11239         {
11240                 .cmd = NL80211_CMD_START_AP,
11241                 .policy = nl80211_policy,
11242                 .flags = GENL_UNS_ADMIN_PERM,
11243                 .doit = nl80211_start_ap,
11244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11245                                   NL80211_FLAG_NEED_RTNL,
11246         },
11247         {
11248                 .cmd = NL80211_CMD_STOP_AP,
11249                 .policy = nl80211_policy,
11250                 .flags = GENL_UNS_ADMIN_PERM,
11251                 .doit = nl80211_stop_ap,
11252                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11253                                   NL80211_FLAG_NEED_RTNL,
11254         },
11255         {
11256                 .cmd = NL80211_CMD_GET_STATION,
11257                 .doit = nl80211_get_station,
11258                 .dumpit = nl80211_dump_station,
11259                 .policy = nl80211_policy,
11260                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11261                                   NL80211_FLAG_NEED_RTNL,
11262         },
11263         {
11264                 .cmd = NL80211_CMD_SET_STATION,
11265                 .doit = nl80211_set_station,
11266                 .policy = nl80211_policy,
11267                 .flags = GENL_UNS_ADMIN_PERM,
11268                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11269                                   NL80211_FLAG_NEED_RTNL,
11270         },
11271         {
11272                 .cmd = NL80211_CMD_NEW_STATION,
11273                 .doit = nl80211_new_station,
11274                 .policy = nl80211_policy,
11275                 .flags = GENL_UNS_ADMIN_PERM,
11276                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11277                                   NL80211_FLAG_NEED_RTNL,
11278         },
11279         {
11280                 .cmd = NL80211_CMD_DEL_STATION,
11281                 .doit = nl80211_del_station,
11282                 .policy = nl80211_policy,
11283                 .flags = GENL_UNS_ADMIN_PERM,
11284                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11285                                   NL80211_FLAG_NEED_RTNL,
11286         },
11287         {
11288                 .cmd = NL80211_CMD_GET_MPATH,
11289                 .doit = nl80211_get_mpath,
11290                 .dumpit = nl80211_dump_mpath,
11291                 .policy = nl80211_policy,
11292                 .flags = GENL_UNS_ADMIN_PERM,
11293                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11294                                   NL80211_FLAG_NEED_RTNL,
11295         },
11296         {
11297                 .cmd = NL80211_CMD_GET_MPP,
11298                 .doit = nl80211_get_mpp,
11299                 .dumpit = nl80211_dump_mpp,
11300                 .policy = nl80211_policy,
11301                 .flags = GENL_UNS_ADMIN_PERM,
11302                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11303                                   NL80211_FLAG_NEED_RTNL,
11304         },
11305         {
11306                 .cmd = NL80211_CMD_SET_MPATH,
11307                 .doit = nl80211_set_mpath,
11308                 .policy = nl80211_policy,
11309                 .flags = GENL_UNS_ADMIN_PERM,
11310                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11311                                   NL80211_FLAG_NEED_RTNL,
11312         },
11313         {
11314                 .cmd = NL80211_CMD_NEW_MPATH,
11315                 .doit = nl80211_new_mpath,
11316                 .policy = nl80211_policy,
11317                 .flags = GENL_UNS_ADMIN_PERM,
11318                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11319                                   NL80211_FLAG_NEED_RTNL,
11320         },
11321         {
11322                 .cmd = NL80211_CMD_DEL_MPATH,
11323                 .doit = nl80211_del_mpath,
11324                 .policy = nl80211_policy,
11325                 .flags = GENL_UNS_ADMIN_PERM,
11326                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11327                                   NL80211_FLAG_NEED_RTNL,
11328         },
11329         {
11330                 .cmd = NL80211_CMD_SET_BSS,
11331                 .doit = nl80211_set_bss,
11332                 .policy = nl80211_policy,
11333                 .flags = GENL_UNS_ADMIN_PERM,
11334                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11335                                   NL80211_FLAG_NEED_RTNL,
11336         },
11337         {
11338                 .cmd = NL80211_CMD_GET_REG,
11339                 .doit = nl80211_get_reg_do,
11340                 .dumpit = nl80211_get_reg_dump,
11341                 .policy = nl80211_policy,
11342                 .internal_flags = NL80211_FLAG_NEED_RTNL,
11343                 /* can be retrieved by unprivileged users */
11344         },
11345 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11346         {
11347                 .cmd = NL80211_CMD_SET_REG,
11348                 .doit = nl80211_set_reg,
11349                 .policy = nl80211_policy,
11350                 .flags = GENL_ADMIN_PERM,
11351                 .internal_flags = NL80211_FLAG_NEED_RTNL,
11352         },
11353 #endif
11354         {
11355                 .cmd = NL80211_CMD_REQ_SET_REG,
11356                 .doit = nl80211_req_set_reg,
11357                 .policy = nl80211_policy,
11358                 .flags = GENL_ADMIN_PERM,
11359         },
11360         {
11361                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11362                 .doit = nl80211_get_mesh_config,
11363                 .policy = nl80211_policy,
11364                 /* can be retrieved by unprivileged users */
11365                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11366                                   NL80211_FLAG_NEED_RTNL,
11367         },
11368         {
11369                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11370                 .doit = nl80211_update_mesh_config,
11371                 .policy = nl80211_policy,
11372                 .flags = GENL_UNS_ADMIN_PERM,
11373                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11374                                   NL80211_FLAG_NEED_RTNL,
11375         },
11376         {
11377                 .cmd = NL80211_CMD_TRIGGER_SCAN,
11378                 .doit = nl80211_trigger_scan,
11379                 .policy = nl80211_policy,
11380                 .flags = GENL_UNS_ADMIN_PERM,
11381                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11382                                   NL80211_FLAG_NEED_RTNL,
11383         },
11384         {
11385                 .cmd = NL80211_CMD_ABORT_SCAN,
11386                 .doit = nl80211_abort_scan,
11387                 .policy = nl80211_policy,
11388                 .flags = GENL_UNS_ADMIN_PERM,
11389                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11390                                   NL80211_FLAG_NEED_RTNL,
11391         },
11392         {
11393                 .cmd = NL80211_CMD_GET_SCAN,
11394                 .policy = nl80211_policy,
11395                 .dumpit = nl80211_dump_scan,
11396         },
11397         {
11398                 .cmd = NL80211_CMD_START_SCHED_SCAN,
11399                 .doit = nl80211_start_sched_scan,
11400                 .policy = nl80211_policy,
11401                 .flags = GENL_UNS_ADMIN_PERM,
11402                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11403                                   NL80211_FLAG_NEED_RTNL,
11404         },
11405         {
11406                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11407                 .doit = nl80211_stop_sched_scan,
11408                 .policy = nl80211_policy,
11409                 .flags = GENL_UNS_ADMIN_PERM,
11410                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11411                                   NL80211_FLAG_NEED_RTNL,
11412         },
11413         {
11414                 .cmd = NL80211_CMD_AUTHENTICATE,
11415                 .doit = nl80211_authenticate,
11416                 .policy = nl80211_policy,
11417                 .flags = GENL_UNS_ADMIN_PERM,
11418                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11419                                   NL80211_FLAG_NEED_RTNL |
11420                                   NL80211_FLAG_CLEAR_SKB,
11421         },
11422         {
11423                 .cmd = NL80211_CMD_ASSOCIATE,
11424                 .doit = nl80211_associate,
11425                 .policy = nl80211_policy,
11426                 .flags = GENL_UNS_ADMIN_PERM,
11427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11428                                   NL80211_FLAG_NEED_RTNL,
11429         },
11430         {
11431                 .cmd = NL80211_CMD_DEAUTHENTICATE,
11432                 .doit = nl80211_deauthenticate,
11433                 .policy = nl80211_policy,
11434                 .flags = GENL_UNS_ADMIN_PERM,
11435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11436                                   NL80211_FLAG_NEED_RTNL,
11437         },
11438         {
11439                 .cmd = NL80211_CMD_DISASSOCIATE,
11440                 .doit = nl80211_disassociate,
11441                 .policy = nl80211_policy,
11442                 .flags = GENL_UNS_ADMIN_PERM,
11443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11444                                   NL80211_FLAG_NEED_RTNL,
11445         },
11446         {
11447                 .cmd = NL80211_CMD_JOIN_IBSS,
11448                 .doit = nl80211_join_ibss,
11449                 .policy = nl80211_policy,
11450                 .flags = GENL_UNS_ADMIN_PERM,
11451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11452                                   NL80211_FLAG_NEED_RTNL,
11453         },
11454         {
11455                 .cmd = NL80211_CMD_LEAVE_IBSS,
11456                 .doit = nl80211_leave_ibss,
11457                 .policy = nl80211_policy,
11458                 .flags = GENL_UNS_ADMIN_PERM,
11459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11460                                   NL80211_FLAG_NEED_RTNL,
11461         },
11462 #ifdef CONFIG_NL80211_TESTMODE
11463         {
11464                 .cmd = NL80211_CMD_TESTMODE,
11465                 .doit = nl80211_testmode_do,
11466                 .dumpit = nl80211_testmode_dump,
11467                 .policy = nl80211_policy,
11468                 .flags = GENL_UNS_ADMIN_PERM,
11469                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11470                                   NL80211_FLAG_NEED_RTNL,
11471         },
11472 #endif
11473         {
11474                 .cmd = NL80211_CMD_CONNECT,
11475                 .doit = nl80211_connect,
11476                 .policy = nl80211_policy,
11477                 .flags = GENL_UNS_ADMIN_PERM,
11478                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11479                                   NL80211_FLAG_NEED_RTNL,
11480         },
11481         {
11482                 .cmd = NL80211_CMD_DISCONNECT,
11483                 .doit = nl80211_disconnect,
11484                 .policy = nl80211_policy,
11485                 .flags = GENL_UNS_ADMIN_PERM,
11486                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11487                                   NL80211_FLAG_NEED_RTNL,
11488         },
11489         {
11490                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11491                 .doit = nl80211_wiphy_netns,
11492                 .policy = nl80211_policy,
11493                 .flags = GENL_UNS_ADMIN_PERM,
11494                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11495                                   NL80211_FLAG_NEED_RTNL,
11496         },
11497         {
11498                 .cmd = NL80211_CMD_GET_SURVEY,
11499                 .policy = nl80211_policy,
11500                 .dumpit = nl80211_dump_survey,
11501         },
11502         {
11503                 .cmd = NL80211_CMD_SET_PMKSA,
11504                 .doit = nl80211_setdel_pmksa,
11505                 .policy = nl80211_policy,
11506                 .flags = GENL_UNS_ADMIN_PERM,
11507                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11508                                   NL80211_FLAG_NEED_RTNL,
11509         },
11510         {
11511                 .cmd = NL80211_CMD_DEL_PMKSA,
11512                 .doit = nl80211_setdel_pmksa,
11513                 .policy = nl80211_policy,
11514                 .flags = GENL_UNS_ADMIN_PERM,
11515                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11516                                   NL80211_FLAG_NEED_RTNL,
11517         },
11518         {
11519                 .cmd = NL80211_CMD_FLUSH_PMKSA,
11520                 .doit = nl80211_flush_pmksa,
11521                 .policy = nl80211_policy,
11522                 .flags = GENL_UNS_ADMIN_PERM,
11523                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11524                                   NL80211_FLAG_NEED_RTNL,
11525         },
11526         {
11527                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11528                 .doit = nl80211_remain_on_channel,
11529                 .policy = nl80211_policy,
11530                 .flags = GENL_UNS_ADMIN_PERM,
11531                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11532                                   NL80211_FLAG_NEED_RTNL,
11533         },
11534         {
11535                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11536                 .doit = nl80211_cancel_remain_on_channel,
11537                 .policy = nl80211_policy,
11538                 .flags = GENL_UNS_ADMIN_PERM,
11539                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11540                                   NL80211_FLAG_NEED_RTNL,
11541         },
11542         {
11543                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11544                 .doit = nl80211_set_tx_bitrate_mask,
11545                 .policy = nl80211_policy,
11546                 .flags = GENL_UNS_ADMIN_PERM,
11547                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11548                                   NL80211_FLAG_NEED_RTNL,
11549         },
11550         {
11551                 .cmd = NL80211_CMD_REGISTER_FRAME,
11552                 .doit = nl80211_register_mgmt,
11553                 .policy = nl80211_policy,
11554                 .flags = GENL_UNS_ADMIN_PERM,
11555                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11556                                   NL80211_FLAG_NEED_RTNL,
11557         },
11558         {
11559                 .cmd = NL80211_CMD_FRAME,
11560                 .doit = nl80211_tx_mgmt,
11561                 .policy = nl80211_policy,
11562                 .flags = GENL_UNS_ADMIN_PERM,
11563                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11564                                   NL80211_FLAG_NEED_RTNL,
11565         },
11566         {
11567                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11568                 .doit = nl80211_tx_mgmt_cancel_wait,
11569                 .policy = nl80211_policy,
11570                 .flags = GENL_UNS_ADMIN_PERM,
11571                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11572                                   NL80211_FLAG_NEED_RTNL,
11573         },
11574         {
11575                 .cmd = NL80211_CMD_SET_POWER_SAVE,
11576                 .doit = nl80211_set_power_save,
11577                 .policy = nl80211_policy,
11578                 .flags = GENL_UNS_ADMIN_PERM,
11579                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11580                                   NL80211_FLAG_NEED_RTNL,
11581         },
11582         {
11583                 .cmd = NL80211_CMD_GET_POWER_SAVE,
11584                 .doit = nl80211_get_power_save,
11585                 .policy = nl80211_policy,
11586                 /* can be retrieved by unprivileged users */
11587                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11588                                   NL80211_FLAG_NEED_RTNL,
11589         },
11590         {
11591                 .cmd = NL80211_CMD_SET_CQM,
11592                 .doit = nl80211_set_cqm,
11593                 .policy = nl80211_policy,
11594                 .flags = GENL_UNS_ADMIN_PERM,
11595                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11596                                   NL80211_FLAG_NEED_RTNL,
11597         },
11598         {
11599                 .cmd = NL80211_CMD_SET_CHANNEL,
11600                 .doit = nl80211_set_channel,
11601                 .policy = nl80211_policy,
11602                 .flags = GENL_UNS_ADMIN_PERM,
11603                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11604                                   NL80211_FLAG_NEED_RTNL,
11605         },
11606         {
11607                 .cmd = NL80211_CMD_SET_WDS_PEER,
11608                 .doit = nl80211_set_wds_peer,
11609                 .policy = nl80211_policy,
11610                 .flags = GENL_UNS_ADMIN_PERM,
11611                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11612                                   NL80211_FLAG_NEED_RTNL,
11613         },
11614         {
11615                 .cmd = NL80211_CMD_JOIN_MESH,
11616                 .doit = nl80211_join_mesh,
11617                 .policy = nl80211_policy,
11618                 .flags = GENL_UNS_ADMIN_PERM,
11619                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11620                                   NL80211_FLAG_NEED_RTNL,
11621         },
11622         {
11623                 .cmd = NL80211_CMD_LEAVE_MESH,
11624                 .doit = nl80211_leave_mesh,
11625                 .policy = nl80211_policy,
11626                 .flags = GENL_UNS_ADMIN_PERM,
11627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11628                                   NL80211_FLAG_NEED_RTNL,
11629         },
11630         {
11631                 .cmd = NL80211_CMD_JOIN_OCB,
11632                 .doit = nl80211_join_ocb,
11633                 .policy = nl80211_policy,
11634                 .flags = GENL_UNS_ADMIN_PERM,
11635                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11636                                   NL80211_FLAG_NEED_RTNL,
11637         },
11638         {
11639                 .cmd = NL80211_CMD_LEAVE_OCB,
11640                 .doit = nl80211_leave_ocb,
11641                 .policy = nl80211_policy,
11642                 .flags = GENL_UNS_ADMIN_PERM,
11643                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11644                                   NL80211_FLAG_NEED_RTNL,
11645         },
11646 #ifdef CONFIG_PM
11647         {
11648                 .cmd = NL80211_CMD_GET_WOWLAN,
11649                 .doit = nl80211_get_wowlan,
11650                 .policy = nl80211_policy,
11651                 /* can be retrieved by unprivileged users */
11652                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11653                                   NL80211_FLAG_NEED_RTNL,
11654         },
11655         {
11656                 .cmd = NL80211_CMD_SET_WOWLAN,
11657                 .doit = nl80211_set_wowlan,
11658                 .policy = nl80211_policy,
11659                 .flags = GENL_UNS_ADMIN_PERM,
11660                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11661                                   NL80211_FLAG_NEED_RTNL,
11662         },
11663 #endif
11664         {
11665                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11666                 .doit = nl80211_set_rekey_data,
11667                 .policy = nl80211_policy,
11668                 .flags = GENL_UNS_ADMIN_PERM,
11669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11670                                   NL80211_FLAG_NEED_RTNL |
11671                                   NL80211_FLAG_CLEAR_SKB,
11672         },
11673         {
11674                 .cmd = NL80211_CMD_TDLS_MGMT,
11675                 .doit = nl80211_tdls_mgmt,
11676                 .policy = nl80211_policy,
11677                 .flags = GENL_UNS_ADMIN_PERM,
11678                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11679                                   NL80211_FLAG_NEED_RTNL,
11680         },
11681         {
11682                 .cmd = NL80211_CMD_TDLS_OPER,
11683                 .doit = nl80211_tdls_oper,
11684                 .policy = nl80211_policy,
11685                 .flags = GENL_UNS_ADMIN_PERM,
11686                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11687                                   NL80211_FLAG_NEED_RTNL,
11688         },
11689         {
11690                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11691                 .doit = nl80211_register_unexpected_frame,
11692                 .policy = nl80211_policy,
11693                 .flags = GENL_UNS_ADMIN_PERM,
11694                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11695                                   NL80211_FLAG_NEED_RTNL,
11696         },
11697         {
11698                 .cmd = NL80211_CMD_PROBE_CLIENT,
11699                 .doit = nl80211_probe_client,
11700                 .policy = nl80211_policy,
11701                 .flags = GENL_UNS_ADMIN_PERM,
11702                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11703                                   NL80211_FLAG_NEED_RTNL,
11704         },
11705         {
11706                 .cmd = NL80211_CMD_REGISTER_BEACONS,
11707                 .doit = nl80211_register_beacons,
11708                 .policy = nl80211_policy,
11709                 .flags = GENL_UNS_ADMIN_PERM,
11710                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11711                                   NL80211_FLAG_NEED_RTNL,
11712         },
11713         {
11714                 .cmd = NL80211_CMD_SET_NOACK_MAP,
11715                 .doit = nl80211_set_noack_map,
11716                 .policy = nl80211_policy,
11717                 .flags = GENL_UNS_ADMIN_PERM,
11718                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11719                                   NL80211_FLAG_NEED_RTNL,
11720         },
11721         {
11722                 .cmd = NL80211_CMD_START_P2P_DEVICE,
11723                 .doit = nl80211_start_p2p_device,
11724                 .policy = nl80211_policy,
11725                 .flags = GENL_UNS_ADMIN_PERM,
11726                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11727                                   NL80211_FLAG_NEED_RTNL,
11728         },
11729         {
11730                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11731                 .doit = nl80211_stop_p2p_device,
11732                 .policy = nl80211_policy,
11733                 .flags = GENL_UNS_ADMIN_PERM,
11734                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11735                                   NL80211_FLAG_NEED_RTNL,
11736         },
11737         {
11738                 .cmd = NL80211_CMD_SET_MCAST_RATE,
11739                 .doit = nl80211_set_mcast_rate,
11740                 .policy = nl80211_policy,
11741                 .flags = GENL_UNS_ADMIN_PERM,
11742                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11743                                   NL80211_FLAG_NEED_RTNL,
11744         },
11745         {
11746                 .cmd = NL80211_CMD_SET_MAC_ACL,
11747                 .doit = nl80211_set_mac_acl,
11748                 .policy = nl80211_policy,
11749                 .flags = GENL_UNS_ADMIN_PERM,
11750                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11751                                   NL80211_FLAG_NEED_RTNL,
11752         },
11753         {
11754                 .cmd = NL80211_CMD_RADAR_DETECT,
11755                 .doit = nl80211_start_radar_detection,
11756                 .policy = nl80211_policy,
11757                 .flags = GENL_UNS_ADMIN_PERM,
11758                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11759                                   NL80211_FLAG_NEED_RTNL,
11760         },
11761         {
11762                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11763                 .doit = nl80211_get_protocol_features,
11764                 .policy = nl80211_policy,
11765         },
11766         {
11767                 .cmd = NL80211_CMD_UPDATE_FT_IES,
11768                 .doit = nl80211_update_ft_ies,
11769                 .policy = nl80211_policy,
11770                 .flags = GENL_UNS_ADMIN_PERM,
11771                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11772                                   NL80211_FLAG_NEED_RTNL,
11773         },
11774         {
11775                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11776                 .doit = nl80211_crit_protocol_start,
11777                 .policy = nl80211_policy,
11778                 .flags = GENL_UNS_ADMIN_PERM,
11779                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11780                                   NL80211_FLAG_NEED_RTNL,
11781         },
11782         {
11783                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11784                 .doit = nl80211_crit_protocol_stop,
11785                 .policy = nl80211_policy,
11786                 .flags = GENL_UNS_ADMIN_PERM,
11787                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11788                                   NL80211_FLAG_NEED_RTNL,
11789         },
11790         {
11791                 .cmd = NL80211_CMD_GET_COALESCE,
11792                 .doit = nl80211_get_coalesce,
11793                 .policy = nl80211_policy,
11794                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11795                                   NL80211_FLAG_NEED_RTNL,
11796         },
11797         {
11798                 .cmd = NL80211_CMD_SET_COALESCE,
11799                 .doit = nl80211_set_coalesce,
11800                 .policy = nl80211_policy,
11801                 .flags = GENL_UNS_ADMIN_PERM,
11802                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11803                                   NL80211_FLAG_NEED_RTNL,
11804         },
11805         {
11806                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11807                 .doit = nl80211_channel_switch,
11808                 .policy = nl80211_policy,
11809                 .flags = GENL_UNS_ADMIN_PERM,
11810                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11811                                   NL80211_FLAG_NEED_RTNL,
11812         },
11813         {
11814                 .cmd = NL80211_CMD_VENDOR,
11815                 .doit = nl80211_vendor_cmd,
11816                 .dumpit = nl80211_vendor_cmd_dump,
11817                 .policy = nl80211_policy,
11818                 .flags = GENL_UNS_ADMIN_PERM,
11819                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11820                                   NL80211_FLAG_NEED_RTNL,
11821         },
11822         {
11823                 .cmd = NL80211_CMD_SET_QOS_MAP,
11824                 .doit = nl80211_set_qos_map,
11825                 .policy = nl80211_policy,
11826                 .flags = GENL_UNS_ADMIN_PERM,
11827                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11828                                   NL80211_FLAG_NEED_RTNL,
11829         },
11830         {
11831                 .cmd = NL80211_CMD_ADD_TX_TS,
11832                 .doit = nl80211_add_tx_ts,
11833                 .policy = nl80211_policy,
11834                 .flags = GENL_UNS_ADMIN_PERM,
11835                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11836                                   NL80211_FLAG_NEED_RTNL,
11837         },
11838         {
11839                 .cmd = NL80211_CMD_DEL_TX_TS,
11840                 .doit = nl80211_del_tx_ts,
11841                 .policy = nl80211_policy,
11842                 .flags = GENL_UNS_ADMIN_PERM,
11843                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11844                                   NL80211_FLAG_NEED_RTNL,
11845         },
11846         {
11847                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11848                 .doit = nl80211_tdls_channel_switch,
11849                 .policy = nl80211_policy,
11850                 .flags = GENL_UNS_ADMIN_PERM,
11851                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11852                                   NL80211_FLAG_NEED_RTNL,
11853         },
11854         {
11855                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11856                 .doit = nl80211_tdls_cancel_channel_switch,
11857                 .policy = nl80211_policy,
11858                 .flags = GENL_UNS_ADMIN_PERM,
11859                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11860                                   NL80211_FLAG_NEED_RTNL,
11861         },
11862 };
11863
11864 /* notification functions */
11865
11866 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11867                           enum nl80211_commands cmd)
11868 {
11869         struct sk_buff *msg;
11870         struct nl80211_dump_wiphy_state state = {};
11871
11872         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11873                 cmd != NL80211_CMD_DEL_WIPHY);
11874
11875         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11876         if (!msg)
11877                 return;
11878
11879         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11880                 nlmsg_free(msg);
11881                 return;
11882         }
11883
11884         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11885                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11886 }
11887
11888 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
11889                                 struct wireless_dev *wdev,
11890                                 enum nl80211_commands cmd)
11891 {
11892         struct sk_buff *msg;
11893
11894         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
11895                 cmd != NL80211_CMD_DEL_INTERFACE);
11896
11897         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11898         if (!msg)
11899                 return;
11900
11901         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
11902                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
11903                 nlmsg_free(msg);
11904                 return;
11905         }
11906
11907         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11908                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11909 }
11910
11911 static int nl80211_add_scan_req(struct sk_buff *msg,
11912                                 struct cfg80211_registered_device *rdev)
11913 {
11914         struct cfg80211_scan_request *req = rdev->scan_req;
11915         struct nlattr *nest;
11916         int i;
11917
11918         if (WARN_ON(!req))
11919                 return 0;
11920
11921         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11922         if (!nest)
11923                 goto nla_put_failure;
11924         for (i = 0; i < req->n_ssids; i++) {
11925                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11926                         goto nla_put_failure;
11927         }
11928         nla_nest_end(msg, nest);
11929
11930         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11931         if (!nest)
11932                 goto nla_put_failure;
11933         for (i = 0; i < req->n_channels; i++) {
11934                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11935                         goto nla_put_failure;
11936         }
11937         nla_nest_end(msg, nest);
11938
11939         if (req->ie &&
11940             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11941                 goto nla_put_failure;
11942
11943         if (req->flags &&
11944             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11945                 goto nla_put_failure;
11946
11947         if (req->info.scan_start_tsf &&
11948             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
11949                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
11950              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
11951                      req->info.tsf_bssid)))
11952                 goto nla_put_failure;
11953
11954         return 0;
11955  nla_put_failure:
11956         return -ENOBUFS;
11957 }
11958
11959 static int nl80211_send_scan_msg(struct sk_buff *msg,
11960                                  struct cfg80211_registered_device *rdev,
11961                                  struct wireless_dev *wdev,
11962                                  u32 portid, u32 seq, int flags,
11963                                  u32 cmd)
11964 {
11965         void *hdr;
11966
11967         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11968         if (!hdr)
11969                 return -1;
11970
11971         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11972             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11973                                          wdev->netdev->ifindex)) ||
11974             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11975                               NL80211_ATTR_PAD))
11976                 goto nla_put_failure;
11977
11978         /* ignore errors and send incomplete event anyway */
11979         nl80211_add_scan_req(msg, rdev);
11980
11981         genlmsg_end(msg, hdr);
11982         return 0;
11983
11984  nla_put_failure:
11985         genlmsg_cancel(msg, hdr);
11986         return -EMSGSIZE;
11987 }
11988
11989 static int
11990 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11991                             struct cfg80211_registered_device *rdev,
11992                             struct net_device *netdev,
11993                             u32 portid, u32 seq, int flags, u32 cmd)
11994 {
11995         void *hdr;
11996
11997         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11998         if (!hdr)
11999                 return -1;
12000
12001         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12002             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12003                 goto nla_put_failure;
12004
12005         genlmsg_end(msg, hdr);
12006         return 0;
12007
12008  nla_put_failure:
12009         genlmsg_cancel(msg, hdr);
12010         return -EMSGSIZE;
12011 }
12012
12013 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12014                              struct wireless_dev *wdev)
12015 {
12016         struct sk_buff *msg;
12017
12018         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12019         if (!msg)
12020                 return;
12021
12022         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12023                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
12024                 nlmsg_free(msg);
12025                 return;
12026         }
12027
12028         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12029                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12030 }
12031
12032 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12033                                        struct wireless_dev *wdev, bool aborted)
12034 {
12035         struct sk_buff *msg;
12036
12037         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12038         if (!msg)
12039                 return NULL;
12040
12041         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12042                                   aborted ? NL80211_CMD_SCAN_ABORTED :
12043                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12044                 nlmsg_free(msg);
12045                 return NULL;
12046         }
12047
12048         return msg;
12049 }
12050
12051 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12052                               struct sk_buff *msg)
12053 {
12054         if (!msg)
12055                 return;
12056
12057         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12058                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12059 }
12060
12061 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12062                                      struct net_device *netdev)
12063 {
12064         struct sk_buff *msg;
12065
12066         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12067         if (!msg)
12068                 return;
12069
12070         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12071                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12072                 nlmsg_free(msg);
12073                 return;
12074         }
12075
12076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12077                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12078 }
12079
12080 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12081                              struct net_device *netdev, u32 cmd)
12082 {
12083         struct sk_buff *msg;
12084
12085         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12086         if (!msg)
12087                 return;
12088
12089         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12090                 nlmsg_free(msg);
12091                 return;
12092         }
12093
12094         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12095                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12096 }
12097
12098 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12099                                           struct regulatory_request *request)
12100 {
12101         /* Userspace can always count this one always being set */
12102         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12103                 goto nla_put_failure;
12104
12105         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12106                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12107                                NL80211_REGDOM_TYPE_WORLD))
12108                         goto nla_put_failure;
12109         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12110                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12111                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12112                         goto nla_put_failure;
12113         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12114                    request->intersect) {
12115                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12116                                NL80211_REGDOM_TYPE_INTERSECTION))
12117                         goto nla_put_failure;
12118         } else {
12119                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12120                                NL80211_REGDOM_TYPE_COUNTRY) ||
12121                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12122                                    request->alpha2))
12123                         goto nla_put_failure;
12124         }
12125
12126         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12127                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12128
12129                 if (wiphy &&
12130                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12131                         goto nla_put_failure;
12132
12133                 if (wiphy &&
12134                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12135                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12136                         goto nla_put_failure;
12137         }
12138
12139         return true;
12140
12141 nla_put_failure:
12142         return false;
12143 }
12144
12145 /*
12146  * This can happen on global regulatory changes or device specific settings
12147  * based on custom regulatory domains.
12148  */
12149 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
12150                                      struct regulatory_request *request)
12151 {
12152         struct sk_buff *msg;
12153         void *hdr;
12154
12155         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12156         if (!msg)
12157                 return;
12158
12159         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
12160         if (!hdr) {
12161                 nlmsg_free(msg);
12162                 return;
12163         }
12164
12165         if (nl80211_reg_change_event_fill(msg, request) == false)
12166                 goto nla_put_failure;
12167
12168         genlmsg_end(msg, hdr);
12169
12170         rcu_read_lock();
12171         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12172                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12173         rcu_read_unlock();
12174
12175         return;
12176
12177 nla_put_failure:
12178         genlmsg_cancel(msg, hdr);
12179         nlmsg_free(msg);
12180 }
12181
12182 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
12183                                     struct net_device *netdev,
12184                                     const u8 *buf, size_t len,
12185                                     enum nl80211_commands cmd, gfp_t gfp,
12186                                     int uapsd_queues)
12187 {
12188         struct sk_buff *msg;
12189         void *hdr;
12190
12191         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12192         if (!msg)
12193                 return;
12194
12195         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12196         if (!hdr) {
12197                 nlmsg_free(msg);
12198                 return;
12199         }
12200
12201         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12202             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12203             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
12204                 goto nla_put_failure;
12205
12206         if (uapsd_queues >= 0) {
12207                 struct nlattr *nla_wmm =
12208                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
12209                 if (!nla_wmm)
12210                         goto nla_put_failure;
12211
12212                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
12213                                uapsd_queues))
12214                         goto nla_put_failure;
12215
12216                 nla_nest_end(msg, nla_wmm);
12217         }
12218
12219         genlmsg_end(msg, hdr);
12220
12221         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12222                                 NL80211_MCGRP_MLME, gfp);
12223         return;
12224
12225  nla_put_failure:
12226         genlmsg_cancel(msg, hdr);
12227         nlmsg_free(msg);
12228 }
12229
12230 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
12231                           struct net_device *netdev, const u8 *buf,
12232                           size_t len, gfp_t gfp)
12233 {
12234         nl80211_send_mlme_event(rdev, netdev, buf, len,
12235                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
12236 }
12237
12238 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
12239                            struct net_device *netdev, const u8 *buf,
12240                            size_t len, gfp_t gfp, int uapsd_queues)
12241 {
12242         nl80211_send_mlme_event(rdev, netdev, buf, len,
12243                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
12244 }
12245
12246 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
12247                          struct net_device *netdev, const u8 *buf,
12248                          size_t len, gfp_t gfp)
12249 {
12250         nl80211_send_mlme_event(rdev, netdev, buf, len,
12251                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
12252 }
12253
12254 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
12255                            struct net_device *netdev, const u8 *buf,
12256                            size_t len, gfp_t gfp)
12257 {
12258         nl80211_send_mlme_event(rdev, netdev, buf, len,
12259                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
12260 }
12261
12262 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12263                                   size_t len)
12264 {
12265         struct wireless_dev *wdev = dev->ieee80211_ptr;
12266         struct wiphy *wiphy = wdev->wiphy;
12267         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12268         const struct ieee80211_mgmt *mgmt = (void *)buf;
12269         u32 cmd;
12270
12271         if (WARN_ON(len < 2))
12272                 return;
12273
12274         if (ieee80211_is_deauth(mgmt->frame_control))
12275                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12276         else
12277                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12278
12279         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12280         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12281 }
12282 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12283
12284 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12285                                       struct net_device *netdev, int cmd,
12286                                       const u8 *addr, gfp_t gfp)
12287 {
12288         struct sk_buff *msg;
12289         void *hdr;
12290
12291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12292         if (!msg)
12293                 return;
12294
12295         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12296         if (!hdr) {
12297                 nlmsg_free(msg);
12298                 return;
12299         }
12300
12301         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12302             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12303             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12304             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12305                 goto nla_put_failure;
12306
12307         genlmsg_end(msg, hdr);
12308
12309         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12310                                 NL80211_MCGRP_MLME, gfp);
12311         return;
12312
12313  nla_put_failure:
12314         genlmsg_cancel(msg, hdr);
12315         nlmsg_free(msg);
12316 }
12317
12318 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12319                                struct net_device *netdev, const u8 *addr,
12320                                gfp_t gfp)
12321 {
12322         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12323                                   addr, gfp);
12324 }
12325
12326 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12327                                 struct net_device *netdev, const u8 *addr,
12328                                 gfp_t gfp)
12329 {
12330         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12331                                   addr, gfp);
12332 }
12333
12334 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12335                                  struct net_device *netdev, const u8 *bssid,
12336                                  const u8 *req_ie, size_t req_ie_len,
12337                                  const u8 *resp_ie, size_t resp_ie_len,
12338                                  int status, gfp_t gfp)
12339 {
12340         struct sk_buff *msg;
12341         void *hdr;
12342
12343         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12344         if (!msg)
12345                 return;
12346
12347         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12348         if (!hdr) {
12349                 nlmsg_free(msg);
12350                 return;
12351         }
12352
12353         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12354             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12355             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12356             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
12357                         status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
12358                         status) ||
12359             (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
12360             (req_ie &&
12361              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12362             (resp_ie &&
12363              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12364                 goto nla_put_failure;
12365
12366         genlmsg_end(msg, hdr);
12367
12368         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12369                                 NL80211_MCGRP_MLME, gfp);
12370         return;
12371
12372  nla_put_failure:
12373         genlmsg_cancel(msg, hdr);
12374         nlmsg_free(msg);
12375 }
12376
12377 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12378                          struct net_device *netdev, const u8 *bssid,
12379                          const u8 *req_ie, size_t req_ie_len,
12380                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12381 {
12382         struct sk_buff *msg;
12383         void *hdr;
12384
12385         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12386         if (!msg)
12387                 return;
12388
12389         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12390         if (!hdr) {
12391                 nlmsg_free(msg);
12392                 return;
12393         }
12394
12395         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12396             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12397             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12398             (req_ie &&
12399              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12400             (resp_ie &&
12401              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12402                 goto nla_put_failure;
12403
12404         genlmsg_end(msg, hdr);
12405
12406         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12407                                 NL80211_MCGRP_MLME, gfp);
12408         return;
12409
12410  nla_put_failure:
12411         genlmsg_cancel(msg, hdr);
12412         nlmsg_free(msg);
12413 }
12414
12415 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12416                                struct net_device *netdev, u16 reason,
12417                                const u8 *ie, size_t ie_len, bool from_ap)
12418 {
12419         struct sk_buff *msg;
12420         void *hdr;
12421
12422         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12423         if (!msg)
12424                 return;
12425
12426         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12427         if (!hdr) {
12428                 nlmsg_free(msg);
12429                 return;
12430         }
12431
12432         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12433             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12434             (from_ap && reason &&
12435              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12436             (from_ap &&
12437              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12438             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12439                 goto nla_put_failure;
12440
12441         genlmsg_end(msg, hdr);
12442
12443         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12444                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12445         return;
12446
12447  nla_put_failure:
12448         genlmsg_cancel(msg, hdr);
12449         nlmsg_free(msg);
12450 }
12451
12452 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12453                              struct net_device *netdev, const u8 *bssid,
12454                              gfp_t gfp)
12455 {
12456         struct sk_buff *msg;
12457         void *hdr;
12458
12459         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12460         if (!msg)
12461                 return;
12462
12463         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12464         if (!hdr) {
12465                 nlmsg_free(msg);
12466                 return;
12467         }
12468
12469         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12470             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12471             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12472                 goto nla_put_failure;
12473
12474         genlmsg_end(msg, hdr);
12475
12476         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12477                                 NL80211_MCGRP_MLME, gfp);
12478         return;
12479
12480  nla_put_failure:
12481         genlmsg_cancel(msg, hdr);
12482         nlmsg_free(msg);
12483 }
12484
12485 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12486                                         const u8* ie, u8 ie_len, gfp_t gfp)
12487 {
12488         struct wireless_dev *wdev = dev->ieee80211_ptr;
12489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12490         struct sk_buff *msg;
12491         void *hdr;
12492
12493         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12494                 return;
12495
12496         trace_cfg80211_notify_new_peer_candidate(dev, addr);
12497
12498         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12499         if (!msg)
12500                 return;
12501
12502         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12503         if (!hdr) {
12504                 nlmsg_free(msg);
12505                 return;
12506         }
12507
12508         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12509             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12510             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12511             (ie_len && ie &&
12512              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12513                 goto nla_put_failure;
12514
12515         genlmsg_end(msg, hdr);
12516
12517         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12518                                 NL80211_MCGRP_MLME, gfp);
12519         return;
12520
12521  nla_put_failure:
12522         genlmsg_cancel(msg, hdr);
12523         nlmsg_free(msg);
12524 }
12525 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12526
12527 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12528                                  struct net_device *netdev, const u8 *addr,
12529                                  enum nl80211_key_type key_type, int key_id,
12530                                  const u8 *tsc, gfp_t gfp)
12531 {
12532         struct sk_buff *msg;
12533         void *hdr;
12534
12535         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12536         if (!msg)
12537                 return;
12538
12539         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12540         if (!hdr) {
12541                 nlmsg_free(msg);
12542                 return;
12543         }
12544
12545         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12546             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12547             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12548             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12549             (key_id != -1 &&
12550              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12551             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12552                 goto nla_put_failure;
12553
12554         genlmsg_end(msg, hdr);
12555
12556         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12557                                 NL80211_MCGRP_MLME, gfp);
12558         return;
12559
12560  nla_put_failure:
12561         genlmsg_cancel(msg, hdr);
12562         nlmsg_free(msg);
12563 }
12564
12565 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12566                                     struct ieee80211_channel *channel_before,
12567                                     struct ieee80211_channel *channel_after)
12568 {
12569         struct sk_buff *msg;
12570         void *hdr;
12571         struct nlattr *nl_freq;
12572
12573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12574         if (!msg)
12575                 return;
12576
12577         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12578         if (!hdr) {
12579                 nlmsg_free(msg);
12580                 return;
12581         }
12582
12583         /*
12584          * Since we are applying the beacon hint to a wiphy we know its
12585          * wiphy_idx is valid
12586          */
12587         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12588                 goto nla_put_failure;
12589
12590         /* Before */
12591         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12592         if (!nl_freq)
12593                 goto nla_put_failure;
12594         if (nl80211_msg_put_channel(msg, channel_before, false))
12595                 goto nla_put_failure;
12596         nla_nest_end(msg, nl_freq);
12597
12598         /* After */
12599         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12600         if (!nl_freq)
12601                 goto nla_put_failure;
12602         if (nl80211_msg_put_channel(msg, channel_after, false))
12603                 goto nla_put_failure;
12604         nla_nest_end(msg, nl_freq);
12605
12606         genlmsg_end(msg, hdr);
12607
12608         rcu_read_lock();
12609         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12610                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12611         rcu_read_unlock();
12612
12613         return;
12614
12615 nla_put_failure:
12616         genlmsg_cancel(msg, hdr);
12617         nlmsg_free(msg);
12618 }
12619
12620 static void nl80211_send_remain_on_chan_event(
12621         int cmd, struct cfg80211_registered_device *rdev,
12622         struct wireless_dev *wdev, u64 cookie,
12623         struct ieee80211_channel *chan,
12624         unsigned int duration, gfp_t gfp)
12625 {
12626         struct sk_buff *msg;
12627         void *hdr;
12628
12629         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12630         if (!msg)
12631                 return;
12632
12633         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12634         if (!hdr) {
12635                 nlmsg_free(msg);
12636                 return;
12637         }
12638
12639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12640             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12641                                          wdev->netdev->ifindex)) ||
12642             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12643                               NL80211_ATTR_PAD) ||
12644             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12645             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12646                         NL80211_CHAN_NO_HT) ||
12647             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12648                               NL80211_ATTR_PAD))
12649                 goto nla_put_failure;
12650
12651         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12652             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12653                 goto nla_put_failure;
12654
12655         genlmsg_end(msg, hdr);
12656
12657         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12658                                 NL80211_MCGRP_MLME, gfp);
12659         return;
12660
12661  nla_put_failure:
12662         genlmsg_cancel(msg, hdr);
12663         nlmsg_free(msg);
12664 }
12665
12666 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12667                                struct ieee80211_channel *chan,
12668                                unsigned int duration, gfp_t gfp)
12669 {
12670         struct wiphy *wiphy = wdev->wiphy;
12671         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12672
12673         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12674         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12675                                           rdev, wdev, cookie, chan,
12676                                           duration, gfp);
12677 }
12678 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12679
12680 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12681                                         struct ieee80211_channel *chan,
12682                                         gfp_t gfp)
12683 {
12684         struct wiphy *wiphy = wdev->wiphy;
12685         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12686
12687         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12688         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12689                                           rdev, wdev, cookie, chan, 0, gfp);
12690 }
12691 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12692
12693 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12694                       struct station_info *sinfo, gfp_t gfp)
12695 {
12696         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12697         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12698         struct sk_buff *msg;
12699
12700         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12701
12702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12703         if (!msg)
12704                 return;
12705
12706         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12707                                  rdev, dev, mac_addr, sinfo) < 0) {
12708                 nlmsg_free(msg);
12709                 return;
12710         }
12711
12712         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12713                                 NL80211_MCGRP_MLME, gfp);
12714 }
12715 EXPORT_SYMBOL(cfg80211_new_sta);
12716
12717 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12718                             struct station_info *sinfo, gfp_t gfp)
12719 {
12720         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12721         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12722         struct sk_buff *msg;
12723         struct station_info empty_sinfo = {};
12724
12725         if (!sinfo)
12726                 sinfo = &empty_sinfo;
12727
12728         trace_cfg80211_del_sta(dev, mac_addr);
12729
12730         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12731         if (!msg)
12732                 return;
12733
12734         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12735                                  rdev, dev, mac_addr, sinfo) < 0) {
12736                 nlmsg_free(msg);
12737                 return;
12738         }
12739
12740         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12741                                 NL80211_MCGRP_MLME, gfp);
12742 }
12743 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12744
12745 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12746                           enum nl80211_connect_failed_reason reason,
12747                           gfp_t gfp)
12748 {
12749         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12750         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12751         struct sk_buff *msg;
12752         void *hdr;
12753
12754         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12755         if (!msg)
12756                 return;
12757
12758         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12759         if (!hdr) {
12760                 nlmsg_free(msg);
12761                 return;
12762         }
12763
12764         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12765             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12766             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12767                 goto nla_put_failure;
12768
12769         genlmsg_end(msg, hdr);
12770
12771         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12772                                 NL80211_MCGRP_MLME, gfp);
12773         return;
12774
12775  nla_put_failure:
12776         genlmsg_cancel(msg, hdr);
12777         nlmsg_free(msg);
12778 }
12779 EXPORT_SYMBOL(cfg80211_conn_failed);
12780
12781 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12782                                        const u8 *addr, gfp_t gfp)
12783 {
12784         struct wireless_dev *wdev = dev->ieee80211_ptr;
12785         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12786         struct sk_buff *msg;
12787         void *hdr;
12788         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12789
12790         if (!nlportid)
12791                 return false;
12792
12793         msg = nlmsg_new(100, gfp);
12794         if (!msg)
12795                 return true;
12796
12797         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12798         if (!hdr) {
12799                 nlmsg_free(msg);
12800                 return true;
12801         }
12802
12803         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12804             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12805             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12806                 goto nla_put_failure;
12807
12808         genlmsg_end(msg, hdr);
12809         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12810         return true;
12811
12812  nla_put_failure:
12813         genlmsg_cancel(msg, hdr);
12814         nlmsg_free(msg);
12815         return true;
12816 }
12817
12818 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12819                                 const u8 *addr, gfp_t gfp)
12820 {
12821         struct wireless_dev *wdev = dev->ieee80211_ptr;
12822         bool ret;
12823
12824         trace_cfg80211_rx_spurious_frame(dev, addr);
12825
12826         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12827                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12828                 trace_cfg80211_return_bool(false);
12829                 return false;
12830         }
12831         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12832                                          addr, gfp);
12833         trace_cfg80211_return_bool(ret);
12834         return ret;
12835 }
12836 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12837
12838 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12839                                         const u8 *addr, gfp_t gfp)
12840 {
12841         struct wireless_dev *wdev = dev->ieee80211_ptr;
12842         bool ret;
12843
12844         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12845
12846         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12847                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12848                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12849                 trace_cfg80211_return_bool(false);
12850                 return false;
12851         }
12852         ret = __nl80211_unexpected_frame(dev,
12853                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12854                                          addr, gfp);
12855         trace_cfg80211_return_bool(ret);
12856         return ret;
12857 }
12858 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12859
12860 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12861                       struct wireless_dev *wdev, u32 nlportid,
12862                       int freq, int sig_dbm,
12863                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12864 {
12865         struct net_device *netdev = wdev->netdev;
12866         struct sk_buff *msg;
12867         void *hdr;
12868
12869         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12870         if (!msg)
12871                 return -ENOMEM;
12872
12873         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12874         if (!hdr) {
12875                 nlmsg_free(msg);
12876                 return -ENOMEM;
12877         }
12878
12879         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12880             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12881                                         netdev->ifindex)) ||
12882             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12883                               NL80211_ATTR_PAD) ||
12884             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12885             (sig_dbm &&
12886              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12887             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12888             (flags &&
12889              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12890                 goto nla_put_failure;
12891
12892         genlmsg_end(msg, hdr);
12893
12894         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12895
12896  nla_put_failure:
12897         genlmsg_cancel(msg, hdr);
12898         nlmsg_free(msg);
12899         return -ENOBUFS;
12900 }
12901
12902 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12903                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
12904 {
12905         struct wiphy *wiphy = wdev->wiphy;
12906         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12907         struct net_device *netdev = wdev->netdev;
12908         struct sk_buff *msg;
12909         void *hdr;
12910
12911         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12912
12913         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12914         if (!msg)
12915                 return;
12916
12917         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12918         if (!hdr) {
12919                 nlmsg_free(msg);
12920                 return;
12921         }
12922
12923         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12924             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12925                                    netdev->ifindex)) ||
12926             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12927                               NL80211_ATTR_PAD) ||
12928             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12929             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12930                               NL80211_ATTR_PAD) ||
12931             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12932                 goto nla_put_failure;
12933
12934         genlmsg_end(msg, hdr);
12935
12936         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12937                                 NL80211_MCGRP_MLME, gfp);
12938         return;
12939
12940  nla_put_failure:
12941         genlmsg_cancel(msg, hdr);
12942         nlmsg_free(msg);
12943 }
12944 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12945
12946 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12947                                             const char *mac, gfp_t gfp)
12948 {
12949         struct wireless_dev *wdev = dev->ieee80211_ptr;
12950         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12951         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12952         void **cb;
12953
12954         if (!msg)
12955                 return NULL;
12956
12957         cb = (void **)msg->cb;
12958
12959         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12960         if (!cb[0]) {
12961                 nlmsg_free(msg);
12962                 return NULL;
12963         }
12964
12965         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12966             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12967                 goto nla_put_failure;
12968
12969         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12970                 goto nla_put_failure;
12971
12972         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12973         if (!cb[1])
12974                 goto nla_put_failure;
12975
12976         cb[2] = rdev;
12977
12978         return msg;
12979  nla_put_failure:
12980         nlmsg_free(msg);
12981         return NULL;
12982 }
12983
12984 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12985 {
12986         void **cb = (void **)msg->cb;
12987         struct cfg80211_registered_device *rdev = cb[2];
12988
12989         nla_nest_end(msg, cb[1]);
12990         genlmsg_end(msg, cb[0]);
12991
12992         memset(msg->cb, 0, sizeof(msg->cb));
12993
12994         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12995                                 NL80211_MCGRP_MLME, gfp);
12996 }
12997
12998 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12999                               enum nl80211_cqm_rssi_threshold_event rssi_event,
13000                               gfp_t gfp)
13001 {
13002         struct sk_buff *msg;
13003
13004         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13005
13006         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13007                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13008                 return;
13009
13010         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13011         if (!msg)
13012                 return;
13013
13014         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13015                         rssi_event))
13016                 goto nla_put_failure;
13017
13018         cfg80211_send_cqm(msg, gfp);
13019
13020         return;
13021
13022  nla_put_failure:
13023         nlmsg_free(msg);
13024 }
13025 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13026
13027 void cfg80211_cqm_txe_notify(struct net_device *dev,
13028                              const u8 *peer, u32 num_packets,
13029                              u32 rate, u32 intvl, gfp_t gfp)
13030 {
13031         struct sk_buff *msg;
13032
13033         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13034         if (!msg)
13035                 return;
13036
13037         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13038                 goto nla_put_failure;
13039
13040         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13041                 goto nla_put_failure;
13042
13043         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13044                 goto nla_put_failure;
13045
13046         cfg80211_send_cqm(msg, gfp);
13047         return;
13048
13049  nla_put_failure:
13050         nlmsg_free(msg);
13051 }
13052 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13053
13054 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13055                                  const u8 *peer, u32 num_packets, gfp_t gfp)
13056 {
13057         struct sk_buff *msg;
13058
13059         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13060
13061         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13062         if (!msg)
13063                 return;
13064
13065         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13066                 goto nla_put_failure;
13067
13068         cfg80211_send_cqm(msg, gfp);
13069         return;
13070
13071  nla_put_failure:
13072         nlmsg_free(msg);
13073 }
13074 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13075
13076 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13077 {
13078         struct sk_buff *msg;
13079
13080         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13081         if (!msg)
13082                 return;
13083
13084         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13085                 goto nla_put_failure;
13086
13087         cfg80211_send_cqm(msg, gfp);
13088         return;
13089
13090  nla_put_failure:
13091         nlmsg_free(msg);
13092 }
13093 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13094
13095 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13096                                      struct net_device *netdev, const u8 *bssid,
13097                                      const u8 *replay_ctr, gfp_t gfp)
13098 {
13099         struct sk_buff *msg;
13100         struct nlattr *rekey_attr;
13101         void *hdr;
13102
13103         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13104         if (!msg)
13105                 return;
13106
13107         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13108         if (!hdr) {
13109                 nlmsg_free(msg);
13110                 return;
13111         }
13112
13113         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13114             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13115             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13116                 goto nla_put_failure;
13117
13118         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13119         if (!rekey_attr)
13120                 goto nla_put_failure;
13121
13122         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13123                     NL80211_REPLAY_CTR_LEN, replay_ctr))
13124                 goto nla_put_failure;
13125
13126         nla_nest_end(msg, rekey_attr);
13127
13128         genlmsg_end(msg, hdr);
13129
13130         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13131                                 NL80211_MCGRP_MLME, gfp);
13132         return;
13133
13134  nla_put_failure:
13135         genlmsg_cancel(msg, hdr);
13136         nlmsg_free(msg);
13137 }
13138
13139 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13140                                const u8 *replay_ctr, gfp_t gfp)
13141 {
13142         struct wireless_dev *wdev = dev->ieee80211_ptr;
13143         struct wiphy *wiphy = wdev->wiphy;
13144         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13145
13146         trace_cfg80211_gtk_rekey_notify(dev, bssid);
13147         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
13148 }
13149 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
13150
13151 static void
13152 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
13153                                struct net_device *netdev, int index,
13154                                const u8 *bssid, bool preauth, gfp_t gfp)
13155 {
13156         struct sk_buff *msg;
13157         struct nlattr *attr;
13158         void *hdr;
13159
13160         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13161         if (!msg)
13162                 return;
13163
13164         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
13165         if (!hdr) {
13166                 nlmsg_free(msg);
13167                 return;
13168         }
13169
13170         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13171             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13172                 goto nla_put_failure;
13173
13174         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
13175         if (!attr)
13176                 goto nla_put_failure;
13177
13178         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
13179             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
13180             (preauth &&
13181              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
13182                 goto nla_put_failure;
13183
13184         nla_nest_end(msg, attr);
13185
13186         genlmsg_end(msg, hdr);
13187
13188         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13189                                 NL80211_MCGRP_MLME, gfp);
13190         return;
13191
13192  nla_put_failure:
13193         genlmsg_cancel(msg, hdr);
13194         nlmsg_free(msg);
13195 }
13196
13197 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
13198                                      const u8 *bssid, bool preauth, gfp_t gfp)
13199 {
13200         struct wireless_dev *wdev = dev->ieee80211_ptr;
13201         struct wiphy *wiphy = wdev->wiphy;
13202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13203
13204         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
13205         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
13206 }
13207 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
13208
13209 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
13210                                      struct net_device *netdev,
13211                                      struct cfg80211_chan_def *chandef,
13212                                      gfp_t gfp,
13213                                      enum nl80211_commands notif,
13214                                      u8 count)
13215 {
13216         struct sk_buff *msg;
13217         void *hdr;
13218
13219         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13220         if (!msg)
13221                 return;
13222
13223         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
13224         if (!hdr) {
13225                 nlmsg_free(msg);
13226                 return;
13227         }
13228
13229         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13230                 goto nla_put_failure;
13231
13232         if (nl80211_send_chandef(msg, chandef))
13233                 goto nla_put_failure;
13234
13235         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
13236             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
13237                         goto nla_put_failure;
13238
13239         genlmsg_end(msg, hdr);
13240
13241         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13242                                 NL80211_MCGRP_MLME, gfp);
13243         return;
13244
13245  nla_put_failure:
13246         genlmsg_cancel(msg, hdr);
13247         nlmsg_free(msg);
13248 }
13249
13250 void cfg80211_ch_switch_notify(struct net_device *dev,
13251                                struct cfg80211_chan_def *chandef)
13252 {
13253         struct wireless_dev *wdev = dev->ieee80211_ptr;
13254         struct wiphy *wiphy = wdev->wiphy;
13255         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13256
13257         ASSERT_WDEV_LOCK(wdev);
13258
13259         trace_cfg80211_ch_switch_notify(dev, chandef);
13260
13261         wdev->chandef = *chandef;
13262         wdev->preset_chandef = *chandef;
13263         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13264                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
13265 }
13266 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13267
13268 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13269                                        struct cfg80211_chan_def *chandef,
13270                                        u8 count)
13271 {
13272         struct wireless_dev *wdev = dev->ieee80211_ptr;
13273         struct wiphy *wiphy = wdev->wiphy;
13274         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13275
13276         trace_cfg80211_ch_switch_started_notify(dev, chandef);
13277
13278         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13279                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13280 }
13281 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13282
13283 void
13284 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13285                      const struct cfg80211_chan_def *chandef,
13286                      enum nl80211_radar_event event,
13287                      struct net_device *netdev, gfp_t gfp)
13288 {
13289         struct sk_buff *msg;
13290         void *hdr;
13291
13292         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13293         if (!msg)
13294                 return;
13295
13296         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13297         if (!hdr) {
13298                 nlmsg_free(msg);
13299                 return;
13300         }
13301
13302         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13303                 goto nla_put_failure;
13304
13305         /* NOP and radar events don't need a netdev parameter */
13306         if (netdev) {
13307                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13308
13309                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13310                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13311                                       NL80211_ATTR_PAD))
13312                         goto nla_put_failure;
13313         }
13314
13315         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13316                 goto nla_put_failure;
13317
13318         if (nl80211_send_chandef(msg, chandef))
13319                 goto nla_put_failure;
13320
13321         genlmsg_end(msg, hdr);
13322
13323         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13324                                 NL80211_MCGRP_MLME, gfp);
13325         return;
13326
13327  nla_put_failure:
13328         genlmsg_cancel(msg, hdr);
13329         nlmsg_free(msg);
13330 }
13331
13332 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13333                            u64 cookie, bool acked, gfp_t gfp)
13334 {
13335         struct wireless_dev *wdev = dev->ieee80211_ptr;
13336         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13337         struct sk_buff *msg;
13338         void *hdr;
13339
13340         trace_cfg80211_probe_status(dev, addr, cookie, acked);
13341
13342         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13343
13344         if (!msg)
13345                 return;
13346
13347         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13348         if (!hdr) {
13349                 nlmsg_free(msg);
13350                 return;
13351         }
13352
13353         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13354             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13355             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13356             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13357                               NL80211_ATTR_PAD) ||
13358             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13359                 goto nla_put_failure;
13360
13361         genlmsg_end(msg, hdr);
13362
13363         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13364                                 NL80211_MCGRP_MLME, gfp);
13365         return;
13366
13367  nla_put_failure:
13368         genlmsg_cancel(msg, hdr);
13369         nlmsg_free(msg);
13370 }
13371 EXPORT_SYMBOL(cfg80211_probe_status);
13372
13373 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13374                                  const u8 *frame, size_t len,
13375                                  int freq, int sig_dbm)
13376 {
13377         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13378         struct sk_buff *msg;
13379         void *hdr;
13380         struct cfg80211_beacon_registration *reg;
13381
13382         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13383
13384         spin_lock_bh(&rdev->beacon_registrations_lock);
13385         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13386                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13387                 if (!msg) {
13388                         spin_unlock_bh(&rdev->beacon_registrations_lock);
13389                         return;
13390                 }
13391
13392                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13393                 if (!hdr)
13394                         goto nla_put_failure;
13395
13396                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13397                     (freq &&
13398                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13399                     (sig_dbm &&
13400                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13401                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13402                         goto nla_put_failure;
13403
13404                 genlmsg_end(msg, hdr);
13405
13406                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13407         }
13408         spin_unlock_bh(&rdev->beacon_registrations_lock);
13409         return;
13410
13411  nla_put_failure:
13412         spin_unlock_bh(&rdev->beacon_registrations_lock);
13413         if (hdr)
13414                 genlmsg_cancel(msg, hdr);
13415         nlmsg_free(msg);
13416 }
13417 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13418
13419 #ifdef CONFIG_PM
13420 static int cfg80211_net_detect_results(struct sk_buff *msg,
13421                                        struct cfg80211_wowlan_wakeup *wakeup)
13422 {
13423         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13424         struct nlattr *nl_results, *nl_match, *nl_freqs;
13425         int i, j;
13426
13427         nl_results = nla_nest_start(
13428                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13429         if (!nl_results)
13430                 return -EMSGSIZE;
13431
13432         for (i = 0; i < nd->n_matches; i++) {
13433                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13434
13435                 nl_match = nla_nest_start(msg, i);
13436                 if (!nl_match)
13437                         break;
13438
13439                 /* The SSID attribute is optional in nl80211, but for
13440                  * simplicity reasons it's always present in the
13441                  * cfg80211 structure.  If a driver can't pass the
13442                  * SSID, that needs to be changed.  A zero length SSID
13443                  * is still a valid SSID (wildcard), so it cannot be
13444                  * used for this purpose.
13445                  */
13446                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13447                             match->ssid.ssid)) {
13448                         nla_nest_cancel(msg, nl_match);
13449                         goto out;
13450                 }
13451
13452                 if (match->n_channels) {
13453                         nl_freqs = nla_nest_start(
13454                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13455                         if (!nl_freqs) {
13456                                 nla_nest_cancel(msg, nl_match);
13457                                 goto out;
13458                         }
13459
13460                         for (j = 0; j < match->n_channels; j++) {
13461                                 if (nla_put_u32(msg, j, match->channels[j])) {
13462                                         nla_nest_cancel(msg, nl_freqs);
13463                                         nla_nest_cancel(msg, nl_match);
13464                                         goto out;
13465                                 }
13466                         }
13467
13468                         nla_nest_end(msg, nl_freqs);
13469                 }
13470
13471                 nla_nest_end(msg, nl_match);
13472         }
13473
13474 out:
13475         nla_nest_end(msg, nl_results);
13476         return 0;
13477 }
13478
13479 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13480                                    struct cfg80211_wowlan_wakeup *wakeup,
13481                                    gfp_t gfp)
13482 {
13483         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13484         struct sk_buff *msg;
13485         void *hdr;
13486         int size = 200;
13487
13488         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13489
13490         if (wakeup)
13491                 size += wakeup->packet_present_len;
13492
13493         msg = nlmsg_new(size, gfp);
13494         if (!msg)
13495                 return;
13496
13497         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13498         if (!hdr)
13499                 goto free_msg;
13500
13501         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13502             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13503                               NL80211_ATTR_PAD))
13504                 goto free_msg;
13505
13506         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13507                                         wdev->netdev->ifindex))
13508                 goto free_msg;
13509
13510         if (wakeup) {
13511                 struct nlattr *reasons;
13512
13513                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13514                 if (!reasons)
13515                         goto free_msg;
13516
13517                 if (wakeup->disconnect &&
13518                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13519                         goto free_msg;
13520                 if (wakeup->magic_pkt &&
13521                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13522                         goto free_msg;
13523                 if (wakeup->gtk_rekey_failure &&
13524                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13525                         goto free_msg;
13526                 if (wakeup->eap_identity_req &&
13527                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13528                         goto free_msg;
13529                 if (wakeup->four_way_handshake &&
13530                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13531                         goto free_msg;
13532                 if (wakeup->rfkill_release &&
13533                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13534                         goto free_msg;
13535
13536                 if (wakeup->pattern_idx >= 0 &&
13537                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13538                                 wakeup->pattern_idx))
13539                         goto free_msg;
13540
13541                 if (wakeup->tcp_match &&
13542                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13543                         goto free_msg;
13544
13545                 if (wakeup->tcp_connlost &&
13546                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13547                         goto free_msg;
13548
13549                 if (wakeup->tcp_nomoretokens &&
13550                     nla_put_flag(msg,
13551                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13552                         goto free_msg;
13553
13554                 if (wakeup->packet) {
13555                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13556                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13557
13558                         if (!wakeup->packet_80211) {
13559                                 pkt_attr =
13560                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13561                                 len_attr =
13562                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13563                         }
13564
13565                         if (wakeup->packet_len &&
13566                             nla_put_u32(msg, len_attr, wakeup->packet_len))
13567                                 goto free_msg;
13568
13569                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13570                                     wakeup->packet))
13571                                 goto free_msg;
13572                 }
13573
13574                 if (wakeup->net_detect &&
13575                     cfg80211_net_detect_results(msg, wakeup))
13576                                 goto free_msg;
13577
13578                 nla_nest_end(msg, reasons);
13579         }
13580
13581         genlmsg_end(msg, hdr);
13582
13583         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13584                                 NL80211_MCGRP_MLME, gfp);
13585         return;
13586
13587  free_msg:
13588         nlmsg_free(msg);
13589 }
13590 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13591 #endif
13592
13593 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13594                                 enum nl80211_tdls_operation oper,
13595                                 u16 reason_code, gfp_t gfp)
13596 {
13597         struct wireless_dev *wdev = dev->ieee80211_ptr;
13598         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13599         struct sk_buff *msg;
13600         void *hdr;
13601
13602         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13603                                          reason_code);
13604
13605         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13606         if (!msg)
13607                 return;
13608
13609         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13610         if (!hdr) {
13611                 nlmsg_free(msg);
13612                 return;
13613         }
13614
13615         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13616             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13617             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13618             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13619             (reason_code > 0 &&
13620              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13621                 goto nla_put_failure;
13622
13623         genlmsg_end(msg, hdr);
13624
13625         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13626                                 NL80211_MCGRP_MLME, gfp);
13627         return;
13628
13629  nla_put_failure:
13630         genlmsg_cancel(msg, hdr);
13631         nlmsg_free(msg);
13632 }
13633 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13634
13635 static int nl80211_netlink_notify(struct notifier_block * nb,
13636                                   unsigned long state,
13637                                   void *_notify)
13638 {
13639         struct netlink_notify *notify = _notify;
13640         struct cfg80211_registered_device *rdev;
13641         struct wireless_dev *wdev;
13642         struct cfg80211_beacon_registration *reg, *tmp;
13643
13644         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13645                 return NOTIFY_DONE;
13646
13647         rcu_read_lock();
13648
13649         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13650                 bool schedule_destroy_work = false;
13651                 bool schedule_scan_stop = false;
13652                 struct cfg80211_sched_scan_request *sched_scan_req =
13653                         rcu_dereference(rdev->sched_scan_req);
13654
13655                 if (sched_scan_req && notify->portid &&
13656                     sched_scan_req->owner_nlportid == notify->portid)
13657                         schedule_scan_stop = true;
13658
13659                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
13660                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
13661
13662                         if (wdev->owner_nlportid == notify->portid)
13663                                 schedule_destroy_work = true;
13664                 }
13665
13666                 spin_lock_bh(&rdev->beacon_registrations_lock);
13667                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13668                                          list) {
13669                         if (reg->nlportid == notify->portid) {
13670                                 list_del(&reg->list);
13671                                 kfree(reg);
13672                                 break;
13673                         }
13674                 }
13675                 spin_unlock_bh(&rdev->beacon_registrations_lock);
13676
13677                 if (schedule_destroy_work) {
13678                         struct cfg80211_iface_destroy *destroy;
13679
13680                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13681                         if (destroy) {
13682                                 destroy->nlportid = notify->portid;
13683                                 spin_lock(&rdev->destroy_list_lock);
13684                                 list_add(&destroy->list, &rdev->destroy_list);
13685                                 spin_unlock(&rdev->destroy_list_lock);
13686                                 schedule_work(&rdev->destroy_work);
13687                         }
13688                 } else if (schedule_scan_stop) {
13689                         sched_scan_req->owner_nlportid = 0;
13690
13691                         if (rdev->ops->sched_scan_stop &&
13692                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13693                                 schedule_work(&rdev->sched_scan_stop_wk);
13694                 }
13695         }
13696
13697         rcu_read_unlock();
13698
13699         /*
13700          * It is possible that the user space process that is controlling the
13701          * indoor setting disappeared, so notify the regulatory core.
13702          */
13703         regulatory_netlink_notify(notify->portid);
13704         return NOTIFY_OK;
13705 }
13706
13707 static struct notifier_block nl80211_netlink_notifier = {
13708         .notifier_call = nl80211_netlink_notify,
13709 };
13710
13711 void cfg80211_ft_event(struct net_device *netdev,
13712                        struct cfg80211_ft_event_params *ft_event)
13713 {
13714         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13716         struct sk_buff *msg;
13717         void *hdr;
13718
13719         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13720
13721         if (!ft_event->target_ap)
13722                 return;
13723
13724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13725         if (!msg)
13726                 return;
13727
13728         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13729         if (!hdr)
13730                 goto out;
13731
13732         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13733             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13734             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13735                 goto out;
13736
13737         if (ft_event->ies &&
13738             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13739                 goto out;
13740         if (ft_event->ric_ies &&
13741             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13742                     ft_event->ric_ies))
13743                 goto out;
13744
13745         genlmsg_end(msg, hdr);
13746
13747         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13748                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13749         return;
13750  out:
13751         nlmsg_free(msg);
13752 }
13753 EXPORT_SYMBOL(cfg80211_ft_event);
13754
13755 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13756 {
13757         struct cfg80211_registered_device *rdev;
13758         struct sk_buff *msg;
13759         void *hdr;
13760         u32 nlportid;
13761
13762         rdev = wiphy_to_rdev(wdev->wiphy);
13763         if (!rdev->crit_proto_nlportid)
13764                 return;
13765
13766         nlportid = rdev->crit_proto_nlportid;
13767         rdev->crit_proto_nlportid = 0;
13768
13769         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13770         if (!msg)
13771                 return;
13772
13773         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13774         if (!hdr)
13775                 goto nla_put_failure;
13776
13777         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13778             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13779                               NL80211_ATTR_PAD))
13780                 goto nla_put_failure;
13781
13782         genlmsg_end(msg, hdr);
13783
13784         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13785         return;
13786
13787  nla_put_failure:
13788         if (hdr)
13789                 genlmsg_cancel(msg, hdr);
13790         nlmsg_free(msg);
13791 }
13792 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13793
13794 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13795 {
13796         struct wiphy *wiphy = wdev->wiphy;
13797         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13798         struct sk_buff *msg;
13799         void *hdr;
13800
13801         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13802         if (!msg)
13803                 return;
13804
13805         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13806         if (!hdr)
13807                 goto out;
13808
13809         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13810             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13811             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13812                               NL80211_ATTR_PAD))
13813                 goto out;
13814
13815         genlmsg_end(msg, hdr);
13816
13817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13818                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13819         return;
13820  out:
13821         nlmsg_free(msg);
13822 }
13823
13824 /* initialisation/exit functions */
13825
13826 int nl80211_init(void)
13827 {
13828         int err;
13829
13830         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13831                                                    nl80211_mcgrps);
13832         if (err)
13833                 return err;
13834
13835         err = netlink_register_notifier(&nl80211_netlink_notifier);
13836         if (err)
13837                 goto err_out;
13838
13839         return 0;
13840  err_out:
13841         genl_unregister_family(&nl80211_fam);
13842         return err;
13843 }
13844
13845 void nl80211_exit(void)
13846 {
13847         netlink_unregister_notifier(&nl80211_netlink_notifier);
13848         genl_unregister_family(&nl80211_fam);
13849 }