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