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