net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         /*
  77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  78                          * changed while the interface is up.
  79                          * Else we would need to add a lot of cruft
  80                          * to update everything:
  81                          *      cooked_mntrs, monitor and all fif_* counters
  82                          *      reconfigure hardware
  83                          */
  84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  86                                 return -EBUSY;
  87
  88                         ieee80211_adjust_monitor_flags(sdata, -1);
  89                         sdata->u.mntr_flags = *flags;
  90                         ieee80211_adjust_monitor_flags(sdata, 1);
  91
  92                         ieee80211_configure_filter(local);
  93                 } else {
  94                         /*
  95                          * Because the interface is down, ieee80211_do_stop
  96                          * and ieee80211_do_open take care of "everything"
  97                          * mentioned in the comment above.
  98                          */
  99                         sdata->u.mntr_flags = *flags;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 107                                       struct wireless_dev *wdev)
 108 {
 109         return ieee80211_do_open(wdev, true);
 110 }
 111
 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 116 }
 117
 118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 119                                   struct net_device *dev,
 120                                   u16 noack_map)
 121 {
 122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 123
 124         sdata->noack_map = noack_map;
 125         return 0;
 126 }
 127
 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 130                              struct key_params *params)
 131 {
 132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 133         struct sta_info *sta = NULL;
 134         struct ieee80211_key *key;
 135         int err;
 136
 137         if (!ieee80211_sdata_running(sdata))
 138                 return -ENETDOWN;
 139
 140         /* reject WEP and TKIP keys if WEP failed to initialize */
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_TKIP:
 144         case WLAN_CIPHER_SUITE_WEP104:
 145                 if (IS_ERR(sdata->local->wep_tx_tfm))
 146                         return -EINVAL;
 147                 break;
 148         default:
 149                 break;
 150         }
 151
 152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 153                                   params->key, params->seq_len, params->seq);
 154         if (IS_ERR(key))
 155                 return PTR_ERR(key);
 156
 157         if (pairwise)
 158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 159
 160         mutex_lock(&sdata->local->sta_mtx);
 161
 162         if (mac_addr) {
 163                 if (ieee80211_vif_is_mesh(&sdata->vif))
 164                         sta = sta_info_get(sdata, mac_addr);
 165                 else
 166                         sta = sta_info_get_bss(sdata, mac_addr);
 167                 /*
 168                  * The ASSOC test makes sure the driver is ready to
 169                  * receive the key. When wpa_supplicant has roamed
 170                  * using FT, it attempts to set the key before
 171                  * association has completed, this rejects that attempt
 172                  * so it will set the key again after assocation.
 173                  *
 174                  * TODO: accept the key if we have a station entry and
 175                  *       add it to the device after the station.
 176                  */
 177                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 178                         ieee80211_key_free(sdata->local, key);
 179                         err = -ENOENT;
 180                         goto out_unlock;
 181                 }
 182         }
 183
 184         switch (sdata->vif.type) {
 185         case NL80211_IFTYPE_STATION:
 186                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 187                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 188                 break;
 189         case NL80211_IFTYPE_AP:
 190         case NL80211_IFTYPE_AP_VLAN:
 191                 /* Keys without a station are used for TX only */
 192                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 193                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 194                 break;
 195         case NL80211_IFTYPE_ADHOC:
 196                 /* no MFP (yet) */
 197                 break;
 198         case NL80211_IFTYPE_MESH_POINT:
 199 #ifdef CONFIG_MAC80211_MESH
 200                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 201                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 202                 break;
 203 #endif
 204         case NL80211_IFTYPE_WDS:
 205         case NL80211_IFTYPE_MONITOR:
 206         case NL80211_IFTYPE_P2P_DEVICE:
 207         case NL80211_IFTYPE_UNSPECIFIED:
 208         case NUM_NL80211_IFTYPES:
 209         case NL80211_IFTYPE_P2P_CLIENT:
 210         case NL80211_IFTYPE_P2P_GO:
 211                 /* shouldn't happen */
 212                 WARN_ON_ONCE(1);
 213                 break;
 214         }
 215
 216         err = ieee80211_key_link(key, sdata, sta);
 217         if (err)
 218                 ieee80211_key_free(sdata->local, key);
 219
 220  out_unlock:
 221         mutex_unlock(&sdata->local->sta_mtx);
 222
 223         return err;
 224 }
 225
 226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 227                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 230         struct ieee80211_local *local = sdata->local;
 231         struct sta_info *sta;
 232         struct ieee80211_key *key = NULL;
 233         int ret;
 234
 235         mutex_lock(&local->sta_mtx);
 236         mutex_lock(&local->key_mtx);
 237
 238         if (mac_addr) {
 239                 ret = -ENOENT;
 240
 241                 sta = sta_info_get_bss(sdata, mac_addr);
 242                 if (!sta)
 243                         goto out_unlock;
 244
 245                 if (pairwise)
 246                         key = key_mtx_dereference(local, sta->ptk);
 247                 else
 248                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 249         } else
 250                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 251
 252         if (!key) {
 253                 ret = -ENOENT;
 254                 goto out_unlock;
 255         }
 256
 257         __ieee80211_key_free(key);
 258
 259         ret = 0;
 260  out_unlock:
 261         mutex_unlock(&local->key_mtx);
 262         mutex_unlock(&local->sta_mtx);
 263
 264         return ret;
 265 }
 266
 267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 268                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 269                              void *cookie,
 270                              void (*callback)(void *cookie,
 271                                               struct key_params *params))
 272 {
 273         struct ieee80211_sub_if_data *sdata;
 274         struct sta_info *sta = NULL;
 275         u8 seq[6] = {0};
 276         struct key_params params;
 277         struct ieee80211_key *key = NULL;
 278         u64 pn64;
 279         u32 iv32;
 280         u16 iv16;
 281         int err = -ENOENT;
 282
 283         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 284
 285         rcu_read_lock();
 286
 287         if (mac_addr) {
 288                 sta = sta_info_get_bss(sdata, mac_addr);
 289                 if (!sta)
 290                         goto out;
 291
 292                 if (pairwise)
 293                         key = rcu_dereference(sta->ptk);
 294                 else if (key_idx < NUM_DEFAULT_KEYS)
 295                         key = rcu_dereference(sta->gtk[key_idx]);
 296         } else
 297                 key = rcu_dereference(sdata->keys[key_idx]);
 298
 299         if (!key)
 300                 goto out;
 301
 302         memset(&params, 0, sizeof(params));
 303
 304         params.cipher = key->conf.cipher;
 305
 306         switch (key->conf.cipher) {
 307         case WLAN_CIPHER_SUITE_TKIP:
 308                 iv32 = key->u.tkip.tx.iv32;
 309                 iv16 = key->u.tkip.tx.iv16;
 310
 311                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 312                         drv_get_tkip_seq(sdata->local,
 313                                          key->conf.hw_key_idx,
 314                                          &iv32, &iv16);
 315
 316                 seq[0] = iv16 & 0xff;
 317                 seq[1] = (iv16 >> 8) & 0xff;
 318                 seq[2] = iv32 & 0xff;
 319                 seq[3] = (iv32 >> 8) & 0xff;
 320                 seq[4] = (iv32 >> 16) & 0xff;
 321                 seq[5] = (iv32 >> 24) & 0xff;
 322                 params.seq = seq;
 323                 params.seq_len = 6;
 324                 break;
 325         case WLAN_CIPHER_SUITE_CCMP:
 326                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 327                 seq[0] = pn64;
 328                 seq[1] = pn64 >> 8;
 329                 seq[2] = pn64 >> 16;
 330                 seq[3] = pn64 >> 24;
 331                 seq[4] = pn64 >> 32;
 332                 seq[5] = pn64 >> 40;
 333                 params.seq = seq;
 334                 params.seq_len = 6;
 335                 break;
 336         case WLAN_CIPHER_SUITE_AES_CMAC:
 337                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 338                 seq[0] = pn64;
 339                 seq[1] = pn64 >> 8;
 340                 seq[2] = pn64 >> 16;
 341                 seq[3] = pn64 >> 24;
 342                 seq[4] = pn64 >> 32;
 343                 seq[5] = pn64 >> 40;
 344                 params.seq = seq;
 345                 params.seq_len = 6;
 346                 break;
 347         }
 348
 349         params.key = key->conf.key;
 350         params.key_len = key->conf.keylen;
 351
 352         callback(cookie, &params);
 353         err = 0;
 354
 355  out:
 356         rcu_read_unlock();
 357         return err;
 358 }
 359
 360 static int ieee80211_config_default_key(struct wiphy *wiphy,
 361                                         struct net_device *dev,
 362                                         u8 key_idx, bool uni,
 363                                         bool multi)
 364 {
 365         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 366
 367         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 368
 369         return 0;
 370 }
 371
 372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 373                                              struct net_device *dev,
 374                                              u8 key_idx)
 375 {
 376         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 377
 378         ieee80211_set_default_mgmt_key(sdata, key_idx);
 379
 380         return 0;
 381 }
 382
 383 void sta_set_rate_info_tx(struct sta_info *sta,
 384                           const struct ieee80211_tx_rate *rate,
 385                           struct rate_info *rinfo)
 386 {
 387         rinfo->flags = 0;
 388         if (rate->flags & IEEE80211_TX_RC_MCS) {
 389                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 390                 rinfo->mcs = rate->idx;
 391         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 392                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 393                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 394                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 395         } else {
 396                 struct ieee80211_supported_band *sband;
 397                 sband = sta->local->hw.wiphy->bands[
 398                                 ieee80211_get_sdata_band(sta->sdata)];
 399                 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
 400         }
 401         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 402                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 403         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 404                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 405         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 406                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 407         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 408                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 409 }
 410
 411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 412 {
 413         rinfo->flags = 0;
 414
 415         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 416                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 417                 rinfo->mcs = sta->last_rx_rate_idx;
 418         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 419                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 420                 rinfo->nss = sta->last_rx_rate_vht_nss;
 421                 rinfo->mcs = sta->last_rx_rate_idx;
 422         } else {
 423                 struct ieee80211_supported_band *sband;
 424
 425                 sband = sta->local->hw.wiphy->bands[
 426                                 ieee80211_get_sdata_band(sta->sdata)];
 427                 rinfo->legacy =
 428                         sband->bitrates[sta->last_rx_rate_idx].bitrate;
 429         }
 430
 431         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 432                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 433         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 434                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 435         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 436                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 437         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 438                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 439         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 440                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 441 }
 442
 443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 444 {
 445         struct ieee80211_sub_if_data *sdata = sta->sdata;
 446         struct ieee80211_local *local = sdata->local;
 447         struct timespec uptime;
 448
 449         sinfo->generation = sdata->local->sta_generation;
 450
 451         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 452                         STATION_INFO_RX_BYTES |
 453                         STATION_INFO_TX_BYTES |
 454                         STATION_INFO_RX_PACKETS |
 455                         STATION_INFO_TX_PACKETS |
 456                         STATION_INFO_TX_RETRIES |
 457                         STATION_INFO_TX_FAILED |
 458                         STATION_INFO_TX_BITRATE |
 459                         STATION_INFO_RX_BITRATE |
 460                         STATION_INFO_RX_DROP_MISC |
 461                         STATION_INFO_BSS_PARAM |
 462                         STATION_INFO_CONNECTED_TIME |
 463                         STATION_INFO_STA_FLAGS |
 464                         STATION_INFO_BEACON_LOSS_COUNT;
 465
 466         do_posix_clock_monotonic_gettime(&uptime);
 467         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 468
 469         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 470         sinfo->rx_bytes = sta->rx_bytes;
 471         sinfo->tx_bytes = sta->tx_bytes;
 472         sinfo->rx_packets = sta->rx_packets;
 473         sinfo->tx_packets = sta->tx_packets;
 474         sinfo->tx_retries = sta->tx_retry_count;
 475         sinfo->tx_failed = sta->tx_retry_failed;
 476         sinfo->rx_dropped_misc = sta->rx_dropped;
 477         sinfo->beacon_loss_count = sta->beacon_loss_count;
 478
 479         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 480             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 481                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 482                 if (!local->ops->get_rssi ||
 483                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 484                         sinfo->signal = (s8)sta->last_signal;
 485                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 486         }
 487
 488         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 489         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 490
 491         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 492 #ifdef CONFIG_MAC80211_MESH
 493                 sinfo->filled |= STATION_INFO_LLID |
 494                                  STATION_INFO_PLID |
 495                                  STATION_INFO_PLINK_STATE |
 496                                  STATION_INFO_LOCAL_PM |
 497                                  STATION_INFO_PEER_PM |
 498                                  STATION_INFO_NONPEER_PM;
 499
 500                 sinfo->llid = le16_to_cpu(sta->llid);
 501                 sinfo->plid = le16_to_cpu(sta->plid);
 502                 sinfo->plink_state = sta->plink_state;
 503                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 504                         sinfo->filled |= STATION_INFO_T_OFFSET;
 505                         sinfo->t_offset = sta->t_offset;
 506                 }
 507                 sinfo->local_pm = sta->local_pm;
 508                 sinfo->peer_pm = sta->peer_pm;
 509                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 510 #endif
 511         }
 512
 513         sinfo->bss_param.flags = 0;
 514         if (sdata->vif.bss_conf.use_cts_prot)
 515                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 516         if (sdata->vif.bss_conf.use_short_preamble)
 517                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 518         if (sdata->vif.bss_conf.use_short_slot)
 519                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 520         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 521         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 522
 523         sinfo->sta_flags.set = 0;
 524         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 525                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 526                                 BIT(NL80211_STA_FLAG_WME) |
 527                                 BIT(NL80211_STA_FLAG_MFP) |
 528                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 529                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 530                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 531         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 532                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 533         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 534                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 535         if (test_sta_flag(sta, WLAN_STA_WME))
 536                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 537         if (test_sta_flag(sta, WLAN_STA_MFP))
 538                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 539         if (test_sta_flag(sta, WLAN_STA_AUTH))
 540                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 541         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 542                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 543         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 544                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 545 }
 546
 547 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 548         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 549         "rx_duplicates", "rx_fragments", "rx_dropped",
 550         "tx_packets", "tx_bytes", "tx_fragments",
 551         "tx_filtered", "tx_retry_failed", "tx_retries",
 552         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 553         "channel", "noise", "ch_time", "ch_time_busy",
 554         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 555 };
 556 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 557
 558 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 559                                        struct net_device *dev,
 560                                        int sset)
 561 {
 562         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 563         int rv = 0;
 564
 565         if (sset == ETH_SS_STATS)
 566                 rv += STA_STATS_LEN;
 567
 568         rv += drv_get_et_sset_count(sdata, sset);
 569
 570         if (rv == 0)
 571                 return -EOPNOTSUPP;
 572         return rv;
 573 }
 574
 575 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 576                                    struct net_device *dev,
 577                                    struct ethtool_stats *stats,
 578                                    u64 *data)
 579 {
 580         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 581         struct ieee80211_chanctx_conf *chanctx_conf;
 582         struct ieee80211_channel *channel;
 583         struct sta_info *sta;
 584         struct ieee80211_local *local = sdata->local;
 585         struct station_info sinfo;
 586         struct survey_info survey;
 587         int i, q;
 588 #define STA_STATS_SURVEY_LEN 7
 589
 590         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 591
 592 #define ADD_STA_STATS(sta)                              \
 593         do {                                            \
 594                 data[i++] += sta->rx_packets;           \
 595                 data[i++] += sta->rx_bytes;             \
 596                 data[i++] += sta->wep_weak_iv_count;    \
 597                 data[i++] += sta->num_duplicates;       \
 598                 data[i++] += sta->rx_fragments;         \
 599                 data[i++] += sta->rx_dropped;           \
 600                                                         \
 601                 data[i++] += sta->tx_packets;           \
 602                 data[i++] += sta->tx_bytes;             \
 603                 data[i++] += sta->tx_fragments;         \
 604                 data[i++] += sta->tx_filtered_count;    \
 605                 data[i++] += sta->tx_retry_failed;      \
 606                 data[i++] += sta->tx_retry_count;       \
 607                 data[i++] += sta->beacon_loss_count;    \
 608         } while (0)
 609
 610         /* For Managed stations, find the single station based on BSSID
 611          * and use that.  For interface types, iterate through all available
 612          * stations and add stats for any station that is assigned to this
 613          * network device.
 614          */
 615
 616         mutex_lock(&local->sta_mtx);
 617
 618         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 619                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 620
 621                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 622                         goto do_survey;
 623
 624                 i = 0;
 625                 ADD_STA_STATS(sta);
 626
 627                 data[i++] = sta->sta_state;
 628
 629                 sinfo.filled = 0;
 630                 sta_set_sinfo(sta, &sinfo);
 631
 632                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 633                         data[i] = 100000 *
 634                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 635                 i++;
 636                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 637                         data[i] = 100000 *
 638                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 639                 i++;
 640
 641                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 642                         data[i] = (u8)sinfo.signal_avg;
 643                 i++;
 644         } else {
 645                 list_for_each_entry(sta, &local->sta_list, list) {
 646                         /* Make sure this station belongs to the proper dev */
 647                         if (sta->sdata->dev != dev)
 648                                 continue;
 649
 650                         i = 0;
 651                         ADD_STA_STATS(sta);
 652                 }
 653         }
 654
 655 do_survey:
 656         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 657         /* Get survey stats for current channel */
 658         survey.filled = 0;
 659
 660         rcu_read_lock();
 661         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 662         if (chanctx_conf)
 663                 channel = chanctx_conf->def.chan;
 664         else
 665                 channel = NULL;
 666         rcu_read_unlock();
 667
 668         if (channel) {
 669                 q = 0;
 670                 do {
 671                         survey.filled = 0;
 672                         if (drv_get_survey(local, q, &survey) != 0) {
 673                                 survey.filled = 0;
 674                                 break;
 675                         }
 676                         q++;
 677                 } while (channel != survey.channel);
 678         }
 679
 680         if (survey.filled)
 681                 data[i++] = survey.channel->center_freq;
 682         else
 683                 data[i++] = 0;
 684         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 685                 data[i++] = (u8)survey.noise;
 686         else
 687                 data[i++] = -1LL;
 688         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 689                 data[i++] = survey.channel_time;
 690         else
 691                 data[i++] = -1LL;
 692         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 693                 data[i++] = survey.channel_time_busy;
 694         else
 695                 data[i++] = -1LL;
 696         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 697                 data[i++] = survey.channel_time_ext_busy;
 698         else
 699                 data[i++] = -1LL;
 700         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 701                 data[i++] = survey.channel_time_rx;
 702         else
 703                 data[i++] = -1LL;
 704         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 705                 data[i++] = survey.channel_time_tx;
 706         else
 707                 data[i++] = -1LL;
 708
 709         mutex_unlock(&local->sta_mtx);
 710
 711         if (WARN_ON(i != STA_STATS_LEN))
 712                 return;
 713
 714         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 715 }
 716
 717 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 718                                      struct net_device *dev,
 719                                      u32 sset, u8 *data)
 720 {
 721         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 722         int sz_sta_stats = 0;
 723
 724         if (sset == ETH_SS_STATS) {
 725                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 726                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 727         }
 728         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 729 }
 730
 731 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 732                                  int idx, u8 *mac, struct station_info *sinfo)
 733 {
 734         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 735         struct ieee80211_local *local = sdata->local;
 736         struct sta_info *sta;
 737         int ret = -ENOENT;
 738
 739         mutex_lock(&local->sta_mtx);
 740
 741         sta = sta_info_get_by_idx(sdata, idx);
 742         if (sta) {
 743                 ret = 0;
 744                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 745                 sta_set_sinfo(sta, sinfo);
 746         }
 747
 748         mutex_unlock(&local->sta_mtx);
 749
 750         return ret;
 751 }
 752
 753 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 754                                  int idx, struct survey_info *survey)
 755 {
 756         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 757
 758         return drv_get_survey(local, idx, survey);
 759 }
 760
 761 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 762                                  u8 *mac, struct station_info *sinfo)
 763 {
 764         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 765         struct ieee80211_local *local = sdata->local;
 766         struct sta_info *sta;
 767         int ret = -ENOENT;
 768
 769         mutex_lock(&local->sta_mtx);
 770
 771         sta = sta_info_get_bss(sdata, mac);
 772         if (sta) {
 773                 ret = 0;
 774                 sta_set_sinfo(sta, sinfo);
 775         }
 776
 777         mutex_unlock(&local->sta_mtx);
 778
 779         return ret;
 780 }
 781
 782 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 783                                          struct cfg80211_chan_def *chandef)
 784 {
 785         struct ieee80211_local *local = wiphy_priv(wiphy);
 786         struct ieee80211_sub_if_data *sdata;
 787         int ret = 0;
 788
 789         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 790                 return 0;
 791
 792         mutex_lock(&local->iflist_mtx);
 793         if (local->use_chanctx) {
 794                 sdata = rcu_dereference_protected(
 795                                 local->monitor_sdata,
 796                                 lockdep_is_held(&local->iflist_mtx));
 797                 if (sdata) {
 798                         ieee80211_vif_release_channel(sdata);
 799                         ret = ieee80211_vif_use_channel(sdata, chandef,
 800                                         IEEE80211_CHANCTX_EXCLUSIVE);
 801                 }
 802         } else if (local->open_count == local->monitors) {
 803                 local->_oper_channel = chandef->chan;
 804                 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
 805                 ieee80211_hw_config(local, 0);
 806         }
 807
 808         if (ret == 0)
 809                 local->monitor_chandef = *chandef;
 810         mutex_unlock(&local->iflist_mtx);
 811
 812         return ret;
 813 }
 814
 815 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 816                                     const u8 *resp, size_t resp_len)
 817 {
 818         struct probe_resp *new, *old;
 819
 820         if (!resp || !resp_len)
 821                 return 1;
 822
 823         old = rtnl_dereference(sdata->u.ap.probe_resp);
 824
 825         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 826         if (!new)
 827                 return -ENOMEM;
 828
 829         new->len = resp_len;
 830         memcpy(new->data, resp, resp_len);
 831
 832         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 833         if (old)
 834                 kfree_rcu(old, rcu_head);
 835
 836         return 0;
 837 }
 838
 839 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 840                                    struct cfg80211_beacon_data *params)
 841 {
 842         struct beacon_data *new, *old;
 843         int new_head_len, new_tail_len;
 844         int size, err;
 845         u32 changed = BSS_CHANGED_BEACON;
 846
 847         old = rtnl_dereference(sdata->u.ap.beacon);
 848
 849         /* Need to have a beacon head if we don't have one yet */
 850         if (!params->head && !old)
 851                 return -EINVAL;
 852
 853         /* new or old head? */
 854         if (params->head)
 855                 new_head_len = params->head_len;
 856         else
 857                 new_head_len = old->head_len;
 858
 859         /* new or old tail? */
 860         if (params->tail || !old)
 861                 /* params->tail_len will be zero for !params->tail */
 862                 new_tail_len = params->tail_len;
 863         else
 864                 new_tail_len = old->tail_len;
 865
 866         size = sizeof(*new) + new_head_len + new_tail_len;
 867
 868         new = kzalloc(size, GFP_KERNEL);
 869         if (!new)
 870                 return -ENOMEM;
 871
 872         /* start filling the new info now */
 873
 874         /*
 875          * pointers go into the block we allocated,
 876          * memory is | beacon_data | head | tail |
 877          */
 878         new->head = ((u8 *) new) + sizeof(*new);
 879         new->tail = new->head + new_head_len;
 880         new->head_len = new_head_len;
 881         new->tail_len = new_tail_len;
 882
 883         /* copy in head */
 884         if (params->head)
 885                 memcpy(new->head, params->head, new_head_len);
 886         else
 887                 memcpy(new->head, old->head, new_head_len);
 888
 889         /* copy in optional tail */
 890         if (params->tail)
 891                 memcpy(new->tail, params->tail, new_tail_len);
 892         else
 893                 if (old)
 894                         memcpy(new->tail, old->tail, new_tail_len);
 895
 896         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 897                                        params->probe_resp_len);
 898         if (err < 0)
 899                 return err;
 900         if (err == 0)
 901                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 902
 903         rcu_assign_pointer(sdata->u.ap.beacon, new);
 904
 905         if (old)
 906                 kfree_rcu(old, rcu_head);
 907
 908         return changed;
 909 }
 910
 911 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 912                               struct cfg80211_ap_settings *params)
 913 {
 914         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 915         struct beacon_data *old;
 916         struct ieee80211_sub_if_data *vlan;
 917         u32 changed = BSS_CHANGED_BEACON_INT |
 918                       BSS_CHANGED_BEACON_ENABLED |
 919                       BSS_CHANGED_BEACON |
 920                       BSS_CHANGED_SSID |
 921                       BSS_CHANGED_P2P_PS;
 922         int err;
 923
 924         old = rtnl_dereference(sdata->u.ap.beacon);
 925         if (old)
 926                 return -EALREADY;
 927
 928         /* TODO: make hostapd tell us what it wants */
 929         sdata->smps_mode = IEEE80211_SMPS_OFF;
 930         sdata->needed_rx_chains = sdata->local->rx_chains;
 931         sdata->radar_required = params->radar_required;
 932
 933         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 934                                         IEEE80211_CHANCTX_SHARED);
 935         if (err)
 936                 return err;
 937         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 938
 939         /*
 940          * Apply control port protocol, this allows us to
 941          * not encrypt dynamic WEP control frames.
 942          */
 943         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 944         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 945         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 946                 vlan->control_port_protocol =
 947                         params->crypto.control_port_ethertype;
 948                 vlan->control_port_no_encrypt =
 949                         params->crypto.control_port_no_encrypt;
 950         }
 951
 952         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 953         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 954         sdata->vif.bss_conf.enable_beacon = true;
 955
 956         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 957         if (params->ssid_len)
 958                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 959                        params->ssid_len);
 960         sdata->vif.bss_conf.hidden_ssid =
 961                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 962
 963         sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
 964         sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
 965
 966         err = ieee80211_assign_beacon(sdata, &params->beacon);
 967         if (err < 0)
 968                 return err;
 969         changed |= err;
 970
 971         err = drv_start_ap(sdata->local, sdata);
 972         if (err) {
 973                 old = rtnl_dereference(sdata->u.ap.beacon);
 974                 if (old)
 975                         kfree_rcu(old, rcu_head);
 976                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 977                 return err;
 978         }
 979
 980         ieee80211_bss_info_change_notify(sdata, changed);
 981
 982         netif_carrier_on(dev);
 983         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 984                 netif_carrier_on(vlan->dev);
 985
 986         return 0;
 987 }
 988
 989 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 990                                    struct cfg80211_beacon_data *params)
 991 {
 992         struct ieee80211_sub_if_data *sdata;
 993         struct beacon_data *old;
 994         int err;
 995
 996         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 997
 998         old = rtnl_dereference(sdata->u.ap.beacon);
 999         if (!old)
1000                 return -ENOENT;
1001
1002         err = ieee80211_assign_beacon(sdata, params);
1003         if (err < 0)
1004                 return err;
1005         ieee80211_bss_info_change_notify(sdata, err);
1006         return 0;
1007 }
1008
1009 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1010 {
1011         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1012         struct ieee80211_sub_if_data *vlan;
1013         struct ieee80211_local *local = sdata->local;
1014         struct beacon_data *old_beacon;
1015         struct probe_resp *old_probe_resp;
1016
1017         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1018         if (!old_beacon)
1019                 return -ENOENT;
1020         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1021
1022         /* turn off carrier for this interface and dependent VLANs */
1023         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1024                 netif_carrier_off(vlan->dev);
1025         netif_carrier_off(dev);
1026
1027         /* remove beacon and probe response */
1028         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1029         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1030         kfree_rcu(old_beacon, rcu_head);
1031         if (old_probe_resp)
1032                 kfree_rcu(old_probe_resp, rcu_head);
1033
1034         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1035                 sta_info_flush_defer(vlan);
1036         sta_info_flush_defer(sdata);
1037         rcu_barrier();
1038         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1039                 sta_info_flush_cleanup(vlan);
1040         sta_info_flush_cleanup(sdata);
1041
1042         sdata->vif.bss_conf.enable_beacon = false;
1043         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1044         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1045
1046         drv_stop_ap(sdata->local, sdata);
1047
1048         /* free all potentially still buffered bcast frames */
1049         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1050         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1051
1052         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1053         ieee80211_vif_release_channel(sdata);
1054
1055         return 0;
1056 }
1057
1058 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1059 struct iapp_layer2_update {
1060         u8 da[ETH_ALEN];        /* broadcast */
1061         u8 sa[ETH_ALEN];        /* STA addr */
1062         __be16 len;             /* 6 */
1063         u8 dsap;                /* 0 */
1064         u8 ssap;                /* 0 */
1065         u8 control;
1066         u8 xid_info[3];
1067 } __packed;
1068
1069 static void ieee80211_send_layer2_update(struct sta_info *sta)
1070 {
1071         struct iapp_layer2_update *msg;
1072         struct sk_buff *skb;
1073
1074         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1075          * bridge devices */
1076
1077         skb = dev_alloc_skb(sizeof(*msg));
1078         if (!skb)
1079                 return;
1080         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1081
1082         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1083          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1084
1085         eth_broadcast_addr(msg->da);
1086         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1087         msg->len = htons(6);
1088         msg->dsap = 0;
1089         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1090         msg->control = 0xaf;    /* XID response lsb.1111F101.
1091                                  * F=0 (no poll command; unsolicited frame) */
1092         msg->xid_info[0] = 0x81;        /* XID format identifier */
1093         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1094         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1095
1096         skb->dev = sta->sdata->dev;
1097         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1098         memset(skb->cb, 0, sizeof(skb->cb));
1099         netif_rx_ni(skb);
1100 }
1101
1102 static int sta_apply_auth_flags(struct ieee80211_local *local,
1103                                 struct sta_info *sta,
1104                                 u32 mask, u32 set)
1105 {
1106         int ret;
1107
1108         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1109             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1110             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1111                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1112                 if (ret)
1113                         return ret;
1114         }
1115
1116         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1117             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1118             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1119                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1120                 if (ret)
1121                         return ret;
1122         }
1123
1124         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1125                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1126                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1127                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1128                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1129                 else
1130                         ret = 0;
1131                 if (ret)
1132                         return ret;
1133         }
1134
1135         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1136             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1137             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1138                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1139                 if (ret)
1140                         return ret;
1141         }
1142
1143         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1144             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1145             test_sta_flag(sta, WLAN_STA_AUTH)) {
1146                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1147                 if (ret)
1148                         return ret;
1149         }
1150
1151         return 0;
1152 }
1153
1154 static int sta_apply_parameters(struct ieee80211_local *local,
1155                                 struct sta_info *sta,
1156                                 struct station_parameters *params)
1157 {
1158         int ret = 0;
1159         u32 rates;
1160         int i, j;
1161         struct ieee80211_supported_band *sband;
1162         struct ieee80211_sub_if_data *sdata = sta->sdata;
1163         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1164         u32 mask, set;
1165
1166         sband = local->hw.wiphy->bands[band];
1167
1168         mask = params->sta_flags_mask;
1169         set = params->sta_flags_set;
1170
1171         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1172                 /*
1173                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1174                  * API but must follow AUTHENTICATED for driver state.
1175                  */
1176                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1177                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1178                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1179                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1180         }
1181
1182         ret = sta_apply_auth_flags(local, sta, mask, set);
1183         if (ret)
1184                 return ret;
1185
1186         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1187                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1188                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1189                 else
1190                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1191         }
1192
1193         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1194                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1195                         set_sta_flag(sta, WLAN_STA_WME);
1196                         sta->sta.wme = true;
1197                 } else {
1198                         clear_sta_flag(sta, WLAN_STA_WME);
1199                         sta->sta.wme = false;
1200                 }
1201         }
1202
1203         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1204                 if (set & BIT(NL80211_STA_FLAG_MFP))
1205                         set_sta_flag(sta, WLAN_STA_MFP);
1206                 else
1207                         clear_sta_flag(sta, WLAN_STA_MFP);
1208         }
1209
1210         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1211                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1212                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1213                 else
1214                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1215         }
1216
1217         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1218                 sta->sta.uapsd_queues = params->uapsd_queues;
1219                 sta->sta.max_sp = params->max_sp;
1220         }
1221
1222         /*
1223          * cfg80211 validates this (1-2007) and allows setting the AID
1224          * only when creating a new station entry
1225          */
1226         if (params->aid)
1227                 sta->sta.aid = params->aid;
1228
1229         /*
1230          * Some of the following updates would be racy if called on an
1231          * existing station, via ieee80211_change_station(). However,
1232          * all such changes are rejected by cfg80211 except for updates
1233          * changing the supported rates on an existing but not yet used
1234          * TDLS peer.
1235          */
1236
1237         if (params->listen_interval >= 0)
1238                 sta->listen_interval = params->listen_interval;
1239
1240         if (params->supported_rates) {
1241                 rates = 0;
1242
1243                 for (i = 0; i < params->supported_rates_len; i++) {
1244                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1245                         for (j = 0; j < sband->n_bitrates; j++) {
1246                                 if (sband->bitrates[j].bitrate == rate)
1247                                         rates |= BIT(j);
1248                         }
1249                 }
1250                 sta->sta.supp_rates[band] = rates;
1251         }
1252
1253         if (params->ht_capa)
1254                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1255                                                   params->ht_capa, sta);
1256
1257         if (params->vht_capa)
1258                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1259                                                     params->vht_capa, sta);
1260
1261         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1262 #ifdef CONFIG_MAC80211_MESH
1263                 u32 changed = 0;
1264                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) {
1265                         switch (params->plink_state) {
1266                         case NL80211_PLINK_ESTAB:
1267                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1268                                         changed = mesh_plink_inc_estab_count(
1269                                                         sdata);
1270                                 sta->plink_state = params->plink_state;
1271
1272                                 ieee80211_mps_sta_status_update(sta);
1273                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1274                                               sdata->u.mesh.mshcfg.power_mode);
1275                                 break;
1276                         case NL80211_PLINK_LISTEN:
1277                         case NL80211_PLINK_BLOCKED:
1278                         case NL80211_PLINK_OPN_SNT:
1279                         case NL80211_PLINK_OPN_RCVD:
1280                         case NL80211_PLINK_CNF_RCVD:
1281                         case NL80211_PLINK_HOLDING:
1282                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1283                                         changed = mesh_plink_dec_estab_count(
1284                                                         sdata);
1285                                 sta->plink_state = params->plink_state;
1286
1287                                 ieee80211_mps_sta_status_update(sta);
1288                                 changed |=
1289                                       ieee80211_mps_local_status_update(sdata);
1290                                 break;
1291                         default:
1292                                 /*  nothing  */
1293                                 break;
1294                         }
1295                 } else {
1296                         switch (params->plink_action) {
1297                         case PLINK_ACTION_OPEN:
1298                                 changed |= mesh_plink_open(sta);
1299                                 break;
1300                         case PLINK_ACTION_BLOCK:
1301                                 changed |= mesh_plink_block(sta);
1302                                 break;
1303                         }
1304                 }
1305
1306                 if (params->local_pm)
1307                         changed |=
1308                               ieee80211_mps_set_sta_local_pm(sta,
1309                                                              params->local_pm);
1310                 ieee80211_bss_info_change_notify(sdata, changed);
1311 #endif
1312         }
1313
1314         return 0;
1315 }
1316
1317 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1318                                  u8 *mac, struct station_parameters *params)
1319 {
1320         struct ieee80211_local *local = wiphy_priv(wiphy);
1321         struct sta_info *sta;
1322         struct ieee80211_sub_if_data *sdata;
1323         int err;
1324         int layer2_update;
1325
1326         if (params->vlan) {
1327                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1328
1329                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1330                     sdata->vif.type != NL80211_IFTYPE_AP)
1331                         return -EINVAL;
1332         } else
1333                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1334
1335         if (ether_addr_equal(mac, sdata->vif.addr))
1336                 return -EINVAL;
1337
1338         if (is_multicast_ether_addr(mac))
1339                 return -EINVAL;
1340
1341         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1342         if (!sta)
1343                 return -ENOMEM;
1344
1345         /*
1346          * defaults -- if userspace wants something else we'll
1347          * change it accordingly in sta_apply_parameters()
1348          */
1349         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1350         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1351
1352         err = sta_apply_parameters(local, sta, params);
1353         if (err) {
1354                 sta_info_free(local, sta);
1355                 return err;
1356         }
1357
1358         /*
1359          * for TDLS, rate control should be initialized only when supported
1360          * rates are known.
1361          */
1362         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1363                 rate_control_rate_init(sta);
1364
1365         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1366                 sdata->vif.type == NL80211_IFTYPE_AP;
1367
1368         err = sta_info_insert_rcu(sta);
1369         if (err) {
1370                 rcu_read_unlock();
1371                 return err;
1372         }
1373
1374         if (layer2_update)
1375                 ieee80211_send_layer2_update(sta);
1376
1377         rcu_read_unlock();
1378
1379         return 0;
1380 }
1381
1382 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1383                                  u8 *mac)
1384 {
1385         struct ieee80211_sub_if_data *sdata;
1386
1387         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1388
1389         if (mac)
1390                 return sta_info_destroy_addr_bss(sdata, mac);
1391
1392         sta_info_flush(sdata);
1393         return 0;
1394 }
1395
1396 static int ieee80211_change_station(struct wiphy *wiphy,
1397                                     struct net_device *dev,
1398                                     u8 *mac,
1399                                     struct station_parameters *params)
1400 {
1401         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1402         struct ieee80211_local *local = wiphy_priv(wiphy);
1403         struct sta_info *sta;
1404         struct ieee80211_sub_if_data *vlansdata;
1405         int err;
1406
1407         mutex_lock(&local->sta_mtx);
1408
1409         sta = sta_info_get_bss(sdata, mac);
1410         if (!sta) {
1411                 mutex_unlock(&local->sta_mtx);
1412                 return -ENOENT;
1413         }
1414
1415         /* in station mode, some updates are only valid with TDLS */
1416         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1417             (params->supported_rates || params->ht_capa || params->vht_capa ||
1418              params->sta_modify_mask ||
1419              (params->sta_flags_mask & BIT(NL80211_STA_FLAG_WME))) &&
1420             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1421                 mutex_unlock(&local->sta_mtx);
1422                 return -EINVAL;
1423         }
1424
1425         if (params->vlan && params->vlan != sta->sdata->dev) {
1426                 bool prev_4addr = false;
1427                 bool new_4addr = false;
1428
1429                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1430
1431                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1432                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1433                         mutex_unlock(&local->sta_mtx);
1434                         return -EINVAL;
1435                 }
1436
1437                 if (params->vlan->ieee80211_ptr->use_4addr) {
1438                         if (vlansdata->u.vlan.sta) {
1439                                 mutex_unlock(&local->sta_mtx);
1440                                 return -EBUSY;
1441                         }
1442
1443                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1444                         new_4addr = true;
1445                 }
1446
1447                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1448                     sta->sdata->u.vlan.sta) {
1449                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1450                         prev_4addr = true;
1451                 }
1452
1453                 sta->sdata = vlansdata;
1454
1455                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1456                     prev_4addr != new_4addr) {
1457                         if (new_4addr)
1458                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1459                         else
1460                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1461                 }
1462
1463                 ieee80211_send_layer2_update(sta);
1464         }
1465
1466         err = sta_apply_parameters(local, sta, params);
1467         if (err) {
1468                 mutex_unlock(&local->sta_mtx);
1469                 return err;
1470         }
1471
1472         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1473                 rate_control_rate_init(sta);
1474
1475         mutex_unlock(&local->sta_mtx);
1476
1477         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1478             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1479                 ieee80211_recalc_ps(local, -1);
1480                 ieee80211_recalc_ps_vif(sdata);
1481         }
1482         return 0;
1483 }
1484
1485 #ifdef CONFIG_MAC80211_MESH
1486 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1487                                  u8 *dst, u8 *next_hop)
1488 {
1489         struct ieee80211_sub_if_data *sdata;
1490         struct mesh_path *mpath;
1491         struct sta_info *sta;
1492         int err;
1493
1494         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1495
1496         rcu_read_lock();
1497         sta = sta_info_get(sdata, next_hop);
1498         if (!sta) {
1499                 rcu_read_unlock();
1500                 return -ENOENT;
1501         }
1502
1503         err = mesh_path_add(sdata, dst);
1504         if (err) {
1505                 rcu_read_unlock();
1506                 return err;
1507         }
1508
1509         mpath = mesh_path_lookup(sdata, dst);
1510         if (!mpath) {
1511                 rcu_read_unlock();
1512                 return -ENXIO;
1513         }
1514         mesh_path_fix_nexthop(mpath, sta);
1515
1516         rcu_read_unlock();
1517         return 0;
1518 }
1519
1520 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1521                                u8 *dst)
1522 {
1523         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1524
1525         if (dst)
1526                 return mesh_path_del(sdata, dst);
1527
1528         mesh_path_flush_by_iface(sdata);
1529         return 0;
1530 }
1531
1532 static int ieee80211_change_mpath(struct wiphy *wiphy,
1533                                     struct net_device *dev,
1534                                     u8 *dst, u8 *next_hop)
1535 {
1536         struct ieee80211_sub_if_data *sdata;
1537         struct mesh_path *mpath;
1538         struct sta_info *sta;
1539
1540         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542         rcu_read_lock();
1543
1544         sta = sta_info_get(sdata, next_hop);
1545         if (!sta) {
1546                 rcu_read_unlock();
1547                 return -ENOENT;
1548         }
1549
1550         mpath = mesh_path_lookup(sdata, dst);
1551         if (!mpath) {
1552                 rcu_read_unlock();
1553                 return -ENOENT;
1554         }
1555
1556         mesh_path_fix_nexthop(mpath, sta);
1557
1558         rcu_read_unlock();
1559         return 0;
1560 }
1561
1562 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1563                             struct mpath_info *pinfo)
1564 {
1565         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1566
1567         if (next_hop_sta)
1568                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1569         else
1570                 memset(next_hop, 0, ETH_ALEN);
1571
1572         memset(pinfo, 0, sizeof(*pinfo));
1573
1574         pinfo->generation = mesh_paths_generation;
1575
1576         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1577                         MPATH_INFO_SN |
1578                         MPATH_INFO_METRIC |
1579                         MPATH_INFO_EXPTIME |
1580                         MPATH_INFO_DISCOVERY_TIMEOUT |
1581                         MPATH_INFO_DISCOVERY_RETRIES |
1582                         MPATH_INFO_FLAGS;
1583
1584         pinfo->frame_qlen = mpath->frame_queue.qlen;
1585         pinfo->sn = mpath->sn;
1586         pinfo->metric = mpath->metric;
1587         if (time_before(jiffies, mpath->exp_time))
1588                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1589         pinfo->discovery_timeout =
1590                         jiffies_to_msecs(mpath->discovery_timeout);
1591         pinfo->discovery_retries = mpath->discovery_retries;
1592         if (mpath->flags & MESH_PATH_ACTIVE)
1593                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1594         if (mpath->flags & MESH_PATH_RESOLVING)
1595                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1596         if (mpath->flags & MESH_PATH_SN_VALID)
1597                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1598         if (mpath->flags & MESH_PATH_FIXED)
1599                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1600         if (mpath->flags & MESH_PATH_RESOLVED)
1601                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1602 }
1603
1604 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1605                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1606
1607 {
1608         struct ieee80211_sub_if_data *sdata;
1609         struct mesh_path *mpath;
1610
1611         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613         rcu_read_lock();
1614         mpath = mesh_path_lookup(sdata, dst);
1615         if (!mpath) {
1616                 rcu_read_unlock();
1617                 return -ENOENT;
1618         }
1619         memcpy(dst, mpath->dst, ETH_ALEN);
1620         mpath_set_pinfo(mpath, next_hop, pinfo);
1621         rcu_read_unlock();
1622         return 0;
1623 }
1624
1625 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1626                                  int idx, u8 *dst, u8 *next_hop,
1627                                  struct mpath_info *pinfo)
1628 {
1629         struct ieee80211_sub_if_data *sdata;
1630         struct mesh_path *mpath;
1631
1632         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634         rcu_read_lock();
1635         mpath = mesh_path_lookup_by_idx(sdata, idx);
1636         if (!mpath) {
1637                 rcu_read_unlock();
1638                 return -ENOENT;
1639         }
1640         memcpy(dst, mpath->dst, ETH_ALEN);
1641         mpath_set_pinfo(mpath, next_hop, pinfo);
1642         rcu_read_unlock();
1643         return 0;
1644 }
1645
1646 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1647                                 struct net_device *dev,
1648                                 struct mesh_config *conf)
1649 {
1650         struct ieee80211_sub_if_data *sdata;
1651         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1652
1653         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1654         return 0;
1655 }
1656
1657 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1658 {
1659         return (mask >> (parm-1)) & 0x1;
1660 }
1661
1662 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1663                 const struct mesh_setup *setup)
1664 {
1665         u8 *new_ie;
1666         const u8 *old_ie;
1667         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1668                                         struct ieee80211_sub_if_data, u.mesh);
1669
1670         /* allocate information elements */
1671         new_ie = NULL;
1672         old_ie = ifmsh->ie;
1673
1674         if (setup->ie_len) {
1675                 new_ie = kmemdup(setup->ie, setup->ie_len,
1676                                 GFP_KERNEL);
1677                 if (!new_ie)
1678                         return -ENOMEM;
1679         }
1680         ifmsh->ie_len = setup->ie_len;
1681         ifmsh->ie = new_ie;
1682         kfree(old_ie);
1683
1684         /* now copy the rest of the setup parameters */
1685         ifmsh->mesh_id_len = setup->mesh_id_len;
1686         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1687         ifmsh->mesh_sp_id = setup->sync_method;
1688         ifmsh->mesh_pp_id = setup->path_sel_proto;
1689         ifmsh->mesh_pm_id = setup->path_metric;
1690         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1691         if (setup->is_authenticated)
1692                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1693         if (setup->is_secure)
1694                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1695
1696         /* mcast rate setting in Mesh Node */
1697         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1698                                                 sizeof(setup->mcast_rate));
1699
1700         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1701         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1702
1703         return 0;
1704 }
1705
1706 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1707                                         struct net_device *dev, u32 mask,
1708                                         const struct mesh_config *nconf)
1709 {
1710         struct mesh_config *conf;
1711         struct ieee80211_sub_if_data *sdata;
1712         struct ieee80211_if_mesh *ifmsh;
1713
1714         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1715         ifmsh = &sdata->u.mesh;
1716
1717         /* Set the config options which we are interested in setting */
1718         conf = &(sdata->u.mesh.mshcfg);
1719         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1720                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1721         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1722                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1723         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1724                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1725         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1726                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1727         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1728                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1729         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1730                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1731         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1732                 conf->element_ttl = nconf->element_ttl;
1733         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1734                 conf->auto_open_plinks = nconf->auto_open_plinks;
1735         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1736                 conf->dot11MeshNbrOffsetMaxNeighbor =
1737                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1738         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1739                 conf->dot11MeshHWMPmaxPREQretries =
1740                         nconf->dot11MeshHWMPmaxPREQretries;
1741         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1742                 conf->path_refresh_time = nconf->path_refresh_time;
1743         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1744                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1745         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1746                 conf->dot11MeshHWMPactivePathTimeout =
1747                         nconf->dot11MeshHWMPactivePathTimeout;
1748         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1749                 conf->dot11MeshHWMPpreqMinInterval =
1750                         nconf->dot11MeshHWMPpreqMinInterval;
1751         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1752                 conf->dot11MeshHWMPperrMinInterval =
1753                         nconf->dot11MeshHWMPperrMinInterval;
1754         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1755                            mask))
1756                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1757                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1758         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1759                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1760                 ieee80211_mesh_root_setup(ifmsh);
1761         }
1762         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1763                 /* our current gate announcement implementation rides on root
1764                  * announcements, so require this ifmsh to also be a root node
1765                  * */
1766                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1767                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1768                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1769                         ieee80211_mesh_root_setup(ifmsh);
1770                 }
1771                 conf->dot11MeshGateAnnouncementProtocol =
1772                         nconf->dot11MeshGateAnnouncementProtocol;
1773         }
1774         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1775                 conf->dot11MeshHWMPRannInterval =
1776                         nconf->dot11MeshHWMPRannInterval;
1777         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1778                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1779         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1780                 /* our RSSI threshold implementation is supported only for
1781                  * devices that report signal in dBm.
1782                  */
1783                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1784                         return -ENOTSUPP;
1785                 conf->rssi_threshold = nconf->rssi_threshold;
1786         }
1787         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1788                 conf->ht_opmode = nconf->ht_opmode;
1789                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1790                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1791         }
1792         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1793                 conf->dot11MeshHWMPactivePathToRootTimeout =
1794                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1795         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1796                 conf->dot11MeshHWMProotInterval =
1797                         nconf->dot11MeshHWMProotInterval;
1798         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1799                 conf->dot11MeshHWMPconfirmationInterval =
1800                         nconf->dot11MeshHWMPconfirmationInterval;
1801         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1802                 conf->power_mode = nconf->power_mode;
1803                 ieee80211_mps_local_status_update(sdata);
1804         }
1805         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1806                 conf->dot11MeshAwakeWindowDuration =
1807                         nconf->dot11MeshAwakeWindowDuration;
1808         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1809         return 0;
1810 }
1811
1812 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1813                                const struct mesh_config *conf,
1814                                const struct mesh_setup *setup)
1815 {
1816         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1817         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1818         int err;
1819
1820         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1821         err = copy_mesh_setup(ifmsh, setup);
1822         if (err)
1823                 return err;
1824
1825         /* can mesh use other SMPS modes? */
1826         sdata->smps_mode = IEEE80211_SMPS_OFF;
1827         sdata->needed_rx_chains = sdata->local->rx_chains;
1828
1829         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1830                                         IEEE80211_CHANCTX_SHARED);
1831         if (err)
1832                 return err;
1833
1834         return ieee80211_start_mesh(sdata);
1835 }
1836
1837 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1838 {
1839         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841         ieee80211_stop_mesh(sdata);
1842         ieee80211_vif_release_channel(sdata);
1843
1844         return 0;
1845 }
1846 #endif
1847
1848 static int ieee80211_change_bss(struct wiphy *wiphy,
1849                                 struct net_device *dev,
1850                                 struct bss_parameters *params)
1851 {
1852         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853         enum ieee80211_band band;
1854         u32 changed = 0;
1855
1856         if (!rtnl_dereference(sdata->u.ap.beacon))
1857                 return -ENOENT;
1858
1859         band = ieee80211_get_sdata_band(sdata);
1860
1861         if (params->use_cts_prot >= 0) {
1862                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1863                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1864         }
1865         if (params->use_short_preamble >= 0) {
1866                 sdata->vif.bss_conf.use_short_preamble =
1867                         params->use_short_preamble;
1868                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1869         }
1870
1871         if (!sdata->vif.bss_conf.use_short_slot &&
1872             band == IEEE80211_BAND_5GHZ) {
1873                 sdata->vif.bss_conf.use_short_slot = true;
1874                 changed |= BSS_CHANGED_ERP_SLOT;
1875         }
1876
1877         if (params->use_short_slot_time >= 0) {
1878                 sdata->vif.bss_conf.use_short_slot =
1879                         params->use_short_slot_time;
1880                 changed |= BSS_CHANGED_ERP_SLOT;
1881         }
1882
1883         if (params->basic_rates) {
1884                 int i, j;
1885                 u32 rates = 0;
1886                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1887
1888                 for (i = 0; i < params->basic_rates_len; i++) {
1889                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1890                         for (j = 0; j < sband->n_bitrates; j++) {
1891                                 if (sband->bitrates[j].bitrate == rate)
1892                                         rates |= BIT(j);
1893                         }
1894                 }
1895                 sdata->vif.bss_conf.basic_rates = rates;
1896                 changed |= BSS_CHANGED_BASIC_RATES;
1897         }
1898
1899         if (params->ap_isolate >= 0) {
1900                 if (params->ap_isolate)
1901                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1902                 else
1903                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1904         }
1905
1906         if (params->ht_opmode >= 0) {
1907                 sdata->vif.bss_conf.ht_operation_mode =
1908                         (u16) params->ht_opmode;
1909                 changed |= BSS_CHANGED_HT;
1910         }
1911
1912         if (params->p2p_ctwindow >= 0) {
1913                 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1914                 changed |= BSS_CHANGED_P2P_PS;
1915         }
1916
1917         if (params->p2p_opp_ps >= 0) {
1918                 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1919                 changed |= BSS_CHANGED_P2P_PS;
1920         }
1921
1922         ieee80211_bss_info_change_notify(sdata, changed);
1923
1924         return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928                                     struct net_device *dev,
1929                                     struct ieee80211_txq_params *params)
1930 {
1931         struct ieee80211_local *local = wiphy_priv(wiphy);
1932         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933         struct ieee80211_tx_queue_params p;
1934
1935         if (!local->ops->conf_tx)
1936                 return -EOPNOTSUPP;
1937
1938         if (local->hw.queues < IEEE80211_NUM_ACS)
1939                 return -EOPNOTSUPP;
1940
1941         memset(&p, 0, sizeof(p));
1942         p.aifs = params->aifs;
1943         p.cw_max = params->cwmax;
1944         p.cw_min = params->cwmin;
1945         p.txop = params->txop;
1946
1947         /*
1948          * Setting tx queue params disables u-apsd because it's only
1949          * called in master mode.
1950          */
1951         p.uapsd = false;
1952
1953         sdata->tx_conf[params->ac] = p;
1954         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955                 wiphy_debug(local->hw.wiphy,
1956                             "failed to set TX queue parameters for AC %d\n",
1957                             params->ac);
1958                 return -EINVAL;
1959         }
1960
1961         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963         return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968                              struct cfg80211_wowlan *wowlan)
1969 {
1970         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975         return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983                           struct cfg80211_scan_request *req)
1984 {
1985         struct ieee80211_sub_if_data *sdata;
1986
1987         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990         case NL80211_IFTYPE_STATION:
1991         case NL80211_IFTYPE_ADHOC:
1992         case NL80211_IFTYPE_MESH_POINT:
1993         case NL80211_IFTYPE_P2P_CLIENT:
1994         case NL80211_IFTYPE_P2P_DEVICE:
1995                 break;
1996         case NL80211_IFTYPE_P2P_GO:
1997                 if (sdata->local->ops->hw_scan)
1998                         break;
1999                 /*
2000                  * FIXME: implement NoA while scanning in software,
2001                  * for now fall through to allow scanning only when
2002                  * beaconing hasn't been configured yet
2003                  */
2004         case NL80211_IFTYPE_AP:
2005                 /*
2006                  * If the scan has been forced (and the driver supports
2007                  * forcing), don't care about being beaconing already.
2008                  * This will create problems to the attached stations (e.g. all
2009                  * the  frames sent while scanning on other channel will be
2010                  * lost)
2011                  */
2012                 if (sdata->u.ap.beacon &&
2013                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2015                         return -EOPNOTSUPP;
2016                 break;
2017         default:
2018                 return -EOPNOTSUPP;
2019         }
2020
2021         return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static int
2025 ieee80211_sched_scan_start(struct wiphy *wiphy,
2026                            struct net_device *dev,
2027                            struct cfg80211_sched_scan_request *req)
2028 {
2029         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031         if (!sdata->local->ops->sched_scan_start)
2032                 return -EOPNOTSUPP;
2033
2034         return ieee80211_request_sched_scan_start(sdata, req);
2035 }
2036
2037 static int
2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042         if (!sdata->local->ops->sched_scan_stop)
2043                 return -EOPNOTSUPP;
2044
2045         return ieee80211_request_sched_scan_stop(sdata);
2046 }
2047
2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2049                           struct cfg80211_auth_request *req)
2050 {
2051         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 }
2053
2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2055                            struct cfg80211_assoc_request *req)
2056 {
2057         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061                             struct cfg80211_deauth_request *req)
2062 {
2063         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067                               struct cfg80211_disassoc_request *req)
2068 {
2069         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2073                                struct cfg80211_ibss_params *params)
2074 {
2075         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 }
2077
2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2084                                     int rate[IEEE80211_NUM_BANDS])
2085 {
2086         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2087
2088         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2089                sizeof(int) * IEEE80211_NUM_BANDS);
2090
2091         return 0;
2092 }
2093
2094 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2095 {
2096         struct ieee80211_local *local = wiphy_priv(wiphy);
2097         int err;
2098
2099         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2100                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2101
2102                 if (err)
2103                         return err;
2104         }
2105
2106         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2107                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2108
2109                 if (err)
2110                         return err;
2111         }
2112
2113         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2114                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2115
2116                 if (err)
2117                         return err;
2118         }
2119
2120         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2121                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2122                         return -EINVAL;
2123                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2124         }
2125         if (changed & WIPHY_PARAM_RETRY_LONG) {
2126                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2127                         return -EINVAL;
2128                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2129         }
2130         if (changed &
2131             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2132                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2133
2134         return 0;
2135 }
2136
2137 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2138                                   struct wireless_dev *wdev,
2139                                   enum nl80211_tx_power_setting type, int mbm)
2140 {
2141         struct ieee80211_local *local = wiphy_priv(wiphy);
2142         struct ieee80211_sub_if_data *sdata;
2143
2144         if (wdev) {
2145                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2146
2147                 switch (type) {
2148                 case NL80211_TX_POWER_AUTOMATIC:
2149                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2150                         break;
2151                 case NL80211_TX_POWER_LIMITED:
2152                 case NL80211_TX_POWER_FIXED:
2153                         if (mbm < 0 || (mbm % 100))
2154                                 return -EOPNOTSUPP;
2155                         sdata->user_power_level = MBM_TO_DBM(mbm);
2156                         break;
2157                 }
2158
2159                 ieee80211_recalc_txpower(sdata);
2160
2161                 return 0;
2162         }
2163
2164         switch (type) {
2165         case NL80211_TX_POWER_AUTOMATIC:
2166                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2167                 break;
2168         case NL80211_TX_POWER_LIMITED:
2169         case NL80211_TX_POWER_FIXED:
2170                 if (mbm < 0 || (mbm % 100))
2171                         return -EOPNOTSUPP;
2172                 local->user_power_level = MBM_TO_DBM(mbm);
2173                 break;
2174         }
2175
2176         mutex_lock(&local->iflist_mtx);
2177         list_for_each_entry(sdata, &local->interfaces, list)
2178                 sdata->user_power_level = local->user_power_level;
2179         list_for_each_entry(sdata, &local->interfaces, list)
2180                 ieee80211_recalc_txpower(sdata);
2181         mutex_unlock(&local->iflist_mtx);
2182
2183         return 0;
2184 }
2185
2186 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2187                                   struct wireless_dev *wdev,
2188                                   int *dbm)
2189 {
2190         struct ieee80211_local *local = wiphy_priv(wiphy);
2191         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2192
2193         if (!local->use_chanctx)
2194                 *dbm = local->hw.conf.power_level;
2195         else
2196                 *dbm = sdata->vif.bss_conf.txpower;
2197
2198         return 0;
2199 }
2200
2201 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2202                                   const u8 *addr)
2203 {
2204         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2205
2206         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2207
2208         return 0;
2209 }
2210
2211 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2212 {
2213         struct ieee80211_local *local = wiphy_priv(wiphy);
2214
2215         drv_rfkill_poll(local);
2216 }
2217
2218 #ifdef CONFIG_NL80211_TESTMODE
2219 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2220 {
2221         struct ieee80211_local *local = wiphy_priv(wiphy);
2222
2223         if (!local->ops->testmode_cmd)
2224                 return -EOPNOTSUPP;
2225
2226         return local->ops->testmode_cmd(&local->hw, data, len);
2227 }
2228
2229 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2230                                    struct sk_buff *skb,
2231                                    struct netlink_callback *cb,
2232                                    void *data, int len)
2233 {
2234         struct ieee80211_local *local = wiphy_priv(wiphy);
2235
2236         if (!local->ops->testmode_dump)
2237                 return -EOPNOTSUPP;
2238
2239         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2240 }
2241 #endif
2242
2243 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2244                              enum ieee80211_smps_mode smps_mode)
2245 {
2246         const u8 *ap;
2247         enum ieee80211_smps_mode old_req;
2248         int err;
2249
2250         lockdep_assert_held(&sdata->u.mgd.mtx);
2251
2252         old_req = sdata->u.mgd.req_smps;
2253         sdata->u.mgd.req_smps = smps_mode;
2254
2255         if (old_req == smps_mode &&
2256             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2257                 return 0;
2258
2259         /*
2260          * If not associated, or current association is not an HT
2261          * association, there's no need to do anything, just store
2262          * the new value until we associate.
2263          */
2264         if (!sdata->u.mgd.associated ||
2265             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2266                 return 0;
2267
2268         ap = sdata->u.mgd.associated->bssid;
2269
2270         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2271                 if (sdata->u.mgd.powersave)
2272                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2273                 else
2274                         smps_mode = IEEE80211_SMPS_OFF;
2275         }
2276
2277         /* send SM PS frame to AP */
2278         err = ieee80211_send_smps_action(sdata, smps_mode,
2279                                          ap, ap);
2280         if (err)
2281                 sdata->u.mgd.req_smps = old_req;
2282
2283         return err;
2284 }
2285
2286 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2287                                     bool enabled, int timeout)
2288 {
2289         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2290         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2291
2292         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2293             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2294                 return -EOPNOTSUPP;
2295
2296         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2297                 return -EOPNOTSUPP;
2298
2299         if (enabled == sdata->u.mgd.powersave &&
2300             timeout == local->dynamic_ps_forced_timeout)
2301                 return 0;
2302
2303         sdata->u.mgd.powersave = enabled;
2304         local->dynamic_ps_forced_timeout = timeout;
2305
2306         /* no change, but if automatic follow powersave */
2307         mutex_lock(&sdata->u.mgd.mtx);
2308         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2309         mutex_unlock(&sdata->u.mgd.mtx);
2310
2311         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2312                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2313
2314         ieee80211_recalc_ps(local, -1);
2315         ieee80211_recalc_ps_vif(sdata);
2316
2317         return 0;
2318 }
2319
2320 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2321                                          struct net_device *dev,
2322                                          s32 rssi_thold, u32 rssi_hyst)
2323 {
2324         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2325         struct ieee80211_vif *vif = &sdata->vif;
2326         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2327
2328         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2329             rssi_hyst == bss_conf->cqm_rssi_hyst)
2330                 return 0;
2331
2332         bss_conf->cqm_rssi_thold = rssi_thold;
2333         bss_conf->cqm_rssi_hyst = rssi_hyst;
2334
2335         /* tell the driver upon association, unless already associated */
2336         if (sdata->u.mgd.associated &&
2337             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2338                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2339
2340         return 0;
2341 }
2342
2343 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2344                                       struct net_device *dev,
2345                                       const u8 *addr,
2346                                       const struct cfg80211_bitrate_mask *mask)
2347 {
2348         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2349         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2350         int i, ret;
2351
2352         if (!ieee80211_sdata_running(sdata))
2353                 return -ENETDOWN;
2354
2355         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2356                 ret = drv_set_bitrate_mask(local, sdata, mask);
2357                 if (ret)
2358                         return ret;
2359         }
2360
2361         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2362                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2363                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2364                        sizeof(mask->control[i].mcs));
2365         }
2366
2367         return 0;
2368 }
2369
2370 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2371                                     struct ieee80211_sub_if_data *sdata,
2372                                     struct ieee80211_channel *channel,
2373                                     unsigned int duration, u64 *cookie,
2374                                     struct sk_buff *txskb)
2375 {
2376         struct ieee80211_roc_work *roc, *tmp;
2377         bool queued = false;
2378         int ret;
2379
2380         lockdep_assert_held(&local->mtx);
2381
2382         if (local->use_chanctx && !local->ops->remain_on_channel)
2383                 return -EOPNOTSUPP;
2384
2385         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2386         if (!roc)
2387                 return -ENOMEM;
2388
2389         roc->chan = channel;
2390         roc->duration = duration;
2391         roc->req_duration = duration;
2392         roc->frame = txskb;
2393         roc->mgmt_tx_cookie = (unsigned long)txskb;
2394         roc->sdata = sdata;
2395         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2396         INIT_LIST_HEAD(&roc->dependents);
2397
2398         /* if there's one pending or we're scanning, queue this one */
2399         if (!list_empty(&local->roc_list) ||
2400             local->scanning || local->radar_detect_enabled)
2401                 goto out_check_combine;
2402
2403         /* if not HW assist, just queue & schedule work */
2404         if (!local->ops->remain_on_channel) {
2405                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2406                 goto out_queue;
2407         }
2408
2409         /* otherwise actually kick it off here (for error handling) */
2410
2411         /*
2412          * If the duration is zero, then the driver
2413          * wouldn't actually do anything. Set it to
2414          * 10 for now.
2415          *
2416          * TODO: cancel the off-channel operation
2417          *       when we get the SKB's TX status and
2418          *       the wait time was zero before.
2419          */
2420         if (!duration)
2421                 duration = 10;
2422
2423         ret = drv_remain_on_channel(local, sdata, channel, duration);
2424         if (ret) {
2425                 kfree(roc);
2426                 return ret;
2427         }
2428
2429         roc->started = true;
2430         goto out_queue;
2431
2432  out_check_combine:
2433         list_for_each_entry(tmp, &local->roc_list, list) {
2434                 if (tmp->chan != channel || tmp->sdata != sdata)
2435                         continue;
2436
2437                 /*
2438                  * Extend this ROC if possible:
2439                  *
2440                  * If it hasn't started yet, just increase the duration
2441                  * and add the new one to the list of dependents.
2442                  */
2443                 if (!tmp->started) {
2444                         list_add_tail(&roc->list, &tmp->dependents);
2445                         tmp->duration = max(tmp->duration, roc->duration);
2446                         queued = true;
2447                         break;
2448                 }
2449
2450                 /* If it has already started, it's more difficult ... */
2451                 if (local->ops->remain_on_channel) {
2452                         unsigned long j = jiffies;
2453
2454                         /*
2455                          * In the offloaded ROC case, if it hasn't begun, add
2456                          * this new one to the dependent list to be handled
2457                          * when the the master one begins. If it has begun,
2458                          * check that there's still a minimum time left and
2459                          * if so, start this one, transmitting the frame, but
2460                          * add it to the list directly after this one with a
2461                          * a reduced time so we'll ask the driver to execute
2462                          * it right after finishing the previous one, in the
2463                          * hope that it'll also be executed right afterwards,
2464                          * effectively extending the old one.
2465                          * If there's no minimum time left, just add it to the
2466                          * normal list.
2467                          */
2468                         if (!tmp->hw_begun) {
2469                                 list_add_tail(&roc->list, &tmp->dependents);
2470                                 queued = true;
2471                                 break;
2472                         }
2473
2474                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2475                                         tmp->hw_start_time +
2476                                         msecs_to_jiffies(tmp->duration))) {
2477                                 int new_dur;
2478
2479                                 ieee80211_handle_roc_started(roc);
2480
2481                                 new_dur = roc->duration -
2482                                           jiffies_to_msecs(tmp->hw_start_time +
2483                                                            msecs_to_jiffies(
2484                                                                 tmp->duration) -
2485                                                            j);
2486
2487                                 if (new_dur > 0) {
2488                                         /* add right after tmp */
2489                                         list_add(&roc->list, &tmp->list);
2490                                 } else {
2491                                         list_add_tail(&roc->list,
2492                                                       &tmp->dependents);
2493                                 }
2494                                 queued = true;
2495                         }
2496                 } else if (del_timer_sync(&tmp->work.timer)) {
2497                         unsigned long new_end;
2498
2499                         /*
2500                          * In the software ROC case, cancel the timer, if
2501                          * that fails then the finish work is already
2502                          * queued/pending and thus we queue the new ROC
2503                          * normally, if that succeeds then we can extend
2504                          * the timer duration and TX the frame (if any.)
2505                          */
2506
2507                         list_add_tail(&roc->list, &tmp->dependents);
2508                         queued = true;
2509
2510                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2511
2512                         /* ok, it was started & we canceled timer */
2513                         if (time_after(new_end, tmp->work.timer.expires))
2514                                 mod_timer(&tmp->work.timer, new_end);
2515                         else
2516                                 add_timer(&tmp->work.timer);
2517
2518                         ieee80211_handle_roc_started(roc);
2519                 }
2520                 break;
2521         }
2522
2523  out_queue:
2524         if (!queued)
2525                 list_add_tail(&roc->list, &local->roc_list);
2526
2527         /*
2528          * cookie is either the roc cookie (for normal roc)
2529          * or the SKB (for mgmt TX)
2530          */
2531         if (!txskb) {
2532                 /* local->mtx protects this */
2533                 local->roc_cookie_counter++;
2534                 roc->cookie = local->roc_cookie_counter;
2535                 /* wow, you wrapped 64 bits ... more likely a bug */
2536                 if (WARN_ON(roc->cookie == 0)) {
2537                         roc->cookie = 1;
2538                         local->roc_cookie_counter++;
2539                 }
2540                 *cookie = roc->cookie;
2541         } else {
2542                 *cookie = (unsigned long)txskb;
2543         }
2544
2545         return 0;
2546 }
2547
2548 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2549                                        struct wireless_dev *wdev,
2550                                        struct ieee80211_channel *chan,
2551                                        unsigned int duration,
2552                                        u64 *cookie)
2553 {
2554         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2555         struct ieee80211_local *local = sdata->local;
2556         int ret;
2557
2558         mutex_lock(&local->mtx);
2559         ret = ieee80211_start_roc_work(local, sdata, chan,
2560                                        duration, cookie, NULL);
2561         mutex_unlock(&local->mtx);
2562
2563         return ret;
2564 }
2565
2566 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2567                                 u64 cookie, bool mgmt_tx)
2568 {
2569         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2570         int ret;
2571
2572         mutex_lock(&local->mtx);
2573         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2574                 struct ieee80211_roc_work *dep, *tmp2;
2575
2576                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2577                         if (!mgmt_tx && dep->cookie != cookie)
2578                                 continue;
2579                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2580                                 continue;
2581                         /* found dependent item -- just remove it */
2582                         list_del(&dep->list);
2583                         mutex_unlock(&local->mtx);
2584
2585                         ieee80211_roc_notify_destroy(dep);
2586                         return 0;
2587                 }
2588
2589                 if (!mgmt_tx && roc->cookie != cookie)
2590                         continue;
2591                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2592                         continue;
2593
2594                 found = roc;
2595                 break;
2596         }
2597
2598         if (!found) {
2599                 mutex_unlock(&local->mtx);
2600                 return -ENOENT;
2601         }
2602
2603         /*
2604          * We found the item to cancel, so do that. Note that it
2605          * may have dependents, which we also cancel (and send
2606          * the expired signal for.) Not doing so would be quite
2607          * tricky here, but we may need to fix it later.
2608          */
2609
2610         if (local->ops->remain_on_channel) {
2611                 if (found->started) {
2612                         ret = drv_cancel_remain_on_channel(local);
2613                         if (WARN_ON_ONCE(ret)) {
2614                                 mutex_unlock(&local->mtx);
2615                                 return ret;
2616                         }
2617                 }
2618
2619                 list_del(&found->list);
2620
2621                 if (found->started)
2622                         ieee80211_start_next_roc(local);
2623                 mutex_unlock(&local->mtx);
2624
2625                 ieee80211_roc_notify_destroy(found);
2626         } else {
2627                 /* work may be pending so use it all the time */
2628                 found->abort = true;
2629                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2630
2631                 mutex_unlock(&local->mtx);
2632
2633                 /* work will clean up etc */
2634                 flush_delayed_work(&found->work);
2635         }
2636
2637         return 0;
2638 }
2639
2640 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2641                                               struct wireless_dev *wdev,
2642                                               u64 cookie)
2643 {
2644         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2645         struct ieee80211_local *local = sdata->local;
2646
2647         return ieee80211_cancel_roc(local, cookie, false);
2648 }
2649
2650 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2651                                            struct net_device *dev,
2652                                            struct cfg80211_chan_def *chandef)
2653 {
2654         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2655         struct ieee80211_local *local = sdata->local;
2656         unsigned long timeout;
2657         int err;
2658
2659         if (!list_empty(&local->roc_list) || local->scanning)
2660                 return -EBUSY;
2661
2662         /* whatever, but channel contexts should not complain about that one */
2663         sdata->smps_mode = IEEE80211_SMPS_OFF;
2664         sdata->needed_rx_chains = local->rx_chains;
2665         sdata->radar_required = true;
2666
2667         mutex_lock(&local->iflist_mtx);
2668         err = ieee80211_vif_use_channel(sdata, chandef,
2669                                         IEEE80211_CHANCTX_SHARED);
2670         mutex_unlock(&local->iflist_mtx);
2671         if (err)
2672                 return err;
2673
2674         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2675         ieee80211_queue_delayed_work(&sdata->local->hw,
2676                                      &sdata->dfs_cac_timer_work, timeout);
2677
2678         return 0;
2679 }
2680
2681 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2682                              struct ieee80211_channel *chan, bool offchan,
2683                              unsigned int wait, const u8 *buf, size_t len,
2684                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2685 {
2686         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2687         struct ieee80211_local *local = sdata->local;
2688         struct sk_buff *skb;
2689         struct sta_info *sta;
2690         const struct ieee80211_mgmt *mgmt = (void *)buf;
2691         bool need_offchan = false;
2692         u32 flags;
2693         int ret;
2694
2695         if (dont_wait_for_ack)
2696                 flags = IEEE80211_TX_CTL_NO_ACK;
2697         else
2698                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2699                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2700
2701         if (no_cck)
2702                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2703
2704         switch (sdata->vif.type) {
2705         case NL80211_IFTYPE_ADHOC:
2706                 if (!sdata->vif.bss_conf.ibss_joined)
2707                         need_offchan = true;
2708                 /* fall through */
2709 #ifdef CONFIG_MAC80211_MESH
2710         case NL80211_IFTYPE_MESH_POINT:
2711                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2712                     !sdata->u.mesh.mesh_id_len)
2713                         need_offchan = true;
2714                 /* fall through */
2715 #endif
2716         case NL80211_IFTYPE_AP:
2717         case NL80211_IFTYPE_AP_VLAN:
2718         case NL80211_IFTYPE_P2P_GO:
2719                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2720                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2721                     !rcu_access_pointer(sdata->bss->beacon))
2722                         need_offchan = true;
2723                 if (!ieee80211_is_action(mgmt->frame_control) ||
2724                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2725                         break;
2726                 rcu_read_lock();
2727                 sta = sta_info_get(sdata, mgmt->da);
2728                 rcu_read_unlock();
2729                 if (!sta)
2730                         return -ENOLINK;
2731                 break;
2732         case NL80211_IFTYPE_STATION:
2733         case NL80211_IFTYPE_P2P_CLIENT:
2734                 if (!sdata->u.mgd.associated)
2735                         need_offchan = true;
2736                 break;
2737         case NL80211_IFTYPE_P2P_DEVICE:
2738                 need_offchan = true;
2739                 break;
2740         default:
2741                 return -EOPNOTSUPP;
2742         }
2743
2744         mutex_lock(&local->mtx);
2745
2746         /* Check if the operating channel is the requested channel */
2747         if (!need_offchan) {
2748                 struct ieee80211_chanctx_conf *chanctx_conf;
2749
2750                 rcu_read_lock();
2751                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2752
2753                 if (chanctx_conf)
2754                         need_offchan = chan != chanctx_conf->def.chan;
2755                 else
2756                         need_offchan = true;
2757                 rcu_read_unlock();
2758         }
2759
2760         if (need_offchan && !offchan) {
2761                 ret = -EBUSY;
2762                 goto out_unlock;
2763         }
2764
2765         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2766         if (!skb) {
2767                 ret = -ENOMEM;
2768                 goto out_unlock;
2769         }
2770         skb_reserve(skb, local->hw.extra_tx_headroom);
2771
2772         memcpy(skb_put(skb, len), buf, len);
2773
2774         IEEE80211_SKB_CB(skb)->flags = flags;
2775
2776         skb->dev = sdata->dev;
2777
2778         if (!need_offchan) {
2779                 *cookie = (unsigned long) skb;
2780                 ieee80211_tx_skb(sdata, skb);
2781                 ret = 0;
2782                 goto out_unlock;
2783         }
2784
2785         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2786                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2787         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2788                 IEEE80211_SKB_CB(skb)->hw_queue =
2789                         local->hw.offchannel_tx_hw_queue;
2790
2791         /* This will handle all kinds of coalescing and immediate TX */
2792         ret = ieee80211_start_roc_work(local, sdata, chan,
2793                                        wait, cookie, skb);
2794         if (ret)
2795                 kfree_skb(skb);
2796  out_unlock:
2797         mutex_unlock(&local->mtx);
2798         return ret;
2799 }
2800
2801 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2802                                          struct wireless_dev *wdev,
2803                                          u64 cookie)
2804 {
2805         struct ieee80211_local *local = wiphy_priv(wiphy);
2806
2807         return ieee80211_cancel_roc(local, cookie, true);
2808 }
2809
2810 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2811                                           struct wireless_dev *wdev,
2812                                           u16 frame_type, bool reg)
2813 {
2814         struct ieee80211_local *local = wiphy_priv(wiphy);
2815         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2816
2817         switch (frame_type) {
2818         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2819                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2820                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2821
2822                         if (reg)
2823                                 ifibss->auth_frame_registrations++;
2824                         else
2825                                 ifibss->auth_frame_registrations--;
2826                 }
2827                 break;
2828         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2829                 if (reg)
2830                         local->probe_req_reg++;
2831                 else
2832                         local->probe_req_reg--;
2833
2834                 if (!local->open_count)
2835                         break;
2836
2837                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2838                 break;
2839         default:
2840                 break;
2841         }
2842 }
2843
2844 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2845 {
2846         struct ieee80211_local *local = wiphy_priv(wiphy);
2847
2848         if (local->started)
2849                 return -EOPNOTSUPP;
2850
2851         return drv_set_antenna(local, tx_ant, rx_ant);
2852 }
2853
2854 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2855 {
2856         struct ieee80211_local *local = wiphy_priv(wiphy);
2857
2858         return drv_get_antenna(local, tx_ant, rx_ant);
2859 }
2860
2861 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2862 {
2863         struct ieee80211_local *local = wiphy_priv(wiphy);
2864
2865         return drv_set_ringparam(local, tx, rx);
2866 }
2867
2868 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2869                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2870 {
2871         struct ieee80211_local *local = wiphy_priv(wiphy);
2872
2873         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2874 }
2875
2876 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2877                                     struct net_device *dev,
2878                                     struct cfg80211_gtk_rekey_data *data)
2879 {
2880         struct ieee80211_local *local = wiphy_priv(wiphy);
2881         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2882
2883         if (!local->ops->set_rekey_data)
2884                 return -EOPNOTSUPP;
2885
2886         drv_set_rekey_data(local, sdata, data);
2887
2888         return 0;
2889 }
2890
2891 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2892 {
2893         u8 *pos = (void *)skb_put(skb, 7);
2894
2895         *pos++ = WLAN_EID_EXT_CAPABILITY;
2896         *pos++ = 5; /* len */
2897         *pos++ = 0x0;
2898         *pos++ = 0x0;
2899         *pos++ = 0x0;
2900         *pos++ = 0x0;
2901         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2902 }
2903
2904 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2905 {
2906         struct ieee80211_local *local = sdata->local;
2907         u16 capab;
2908
2909         capab = 0;
2910         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2911                 return capab;
2912
2913         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2914                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2915         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2916                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2917
2918         return capab;
2919 }
2920
2921 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2922                                        u8 *peer, u8 *bssid)
2923 {
2924         struct ieee80211_tdls_lnkie *lnkid;
2925
2926         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2927
2928         lnkid->ie_type = WLAN_EID_LINK_ID;
2929         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2930
2931         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2932         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2933         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2934 }
2935
2936 static int
2937 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2938                                u8 *peer, u8 action_code, u8 dialog_token,
2939                                u16 status_code, struct sk_buff *skb)
2940 {
2941         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2942         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2943         struct ieee80211_tdls_data *tf;
2944
2945         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2946
2947         memcpy(tf->da, peer, ETH_ALEN);
2948         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2949         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2950         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2951
2952         switch (action_code) {
2953         case WLAN_TDLS_SETUP_REQUEST:
2954                 tf->category = WLAN_CATEGORY_TDLS;
2955                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2956
2957                 skb_put(skb, sizeof(tf->u.setup_req));
2958                 tf->u.setup_req.dialog_token = dialog_token;
2959                 tf->u.setup_req.capability =
2960                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2961
2962                 ieee80211_add_srates_ie(sdata, skb, false, band);
2963                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2964                 ieee80211_tdls_add_ext_capab(skb);
2965                 break;
2966         case WLAN_TDLS_SETUP_RESPONSE:
2967                 tf->category = WLAN_CATEGORY_TDLS;
2968                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2969
2970                 skb_put(skb, sizeof(tf->u.setup_resp));
2971                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2972                 tf->u.setup_resp.dialog_token = dialog_token;
2973                 tf->u.setup_resp.capability =
2974                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2975
2976                 ieee80211_add_srates_ie(sdata, skb, false, band);
2977                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2978                 ieee80211_tdls_add_ext_capab(skb);
2979                 break;
2980         case WLAN_TDLS_SETUP_CONFIRM:
2981                 tf->category = WLAN_CATEGORY_TDLS;
2982                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2983
2984                 skb_put(skb, sizeof(tf->u.setup_cfm));
2985                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2986                 tf->u.setup_cfm.dialog_token = dialog_token;
2987                 break;
2988         case WLAN_TDLS_TEARDOWN:
2989                 tf->category = WLAN_CATEGORY_TDLS;
2990                 tf->action_code = WLAN_TDLS_TEARDOWN;
2991
2992                 skb_put(skb, sizeof(tf->u.teardown));
2993                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2994                 break;
2995         case WLAN_TDLS_DISCOVERY_REQUEST:
2996                 tf->category = WLAN_CATEGORY_TDLS;
2997                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2998
2999                 skb_put(skb, sizeof(tf->u.discover_req));
3000                 tf->u.discover_req.dialog_token = dialog_token;
3001                 break;
3002         default:
3003                 return -EINVAL;
3004         }
3005
3006         return 0;
3007 }
3008
3009 static int
3010 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3011                            u8 *peer, u8 action_code, u8 dialog_token,
3012                            u16 status_code, struct sk_buff *skb)
3013 {
3014         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3015         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3016         struct ieee80211_mgmt *mgmt;
3017
3018         mgmt = (void *)skb_put(skb, 24);
3019         memset(mgmt, 0, 24);
3020         memcpy(mgmt->da, peer, ETH_ALEN);
3021         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3022         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3023
3024         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3025                                           IEEE80211_STYPE_ACTION);
3026
3027         switch (action_code) {
3028         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3029                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3030                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3031                 mgmt->u.action.u.tdls_discover_resp.action_code =
3032                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3033                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3034                         dialog_token;
3035                 mgmt->u.action.u.tdls_discover_resp.capability =
3036                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3037
3038                 ieee80211_add_srates_ie(sdata, skb, false, band);
3039                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3040                 ieee80211_tdls_add_ext_capab(skb);
3041                 break;
3042         default:
3043                 return -EINVAL;
3044         }
3045
3046         return 0;
3047 }
3048
3049 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3050                                u8 *peer, u8 action_code, u8 dialog_token,
3051                                u16 status_code, const u8 *extra_ies,
3052                                size_t extra_ies_len)
3053 {
3054         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3055         struct ieee80211_local *local = sdata->local;
3056         struct sk_buff *skb = NULL;
3057         bool send_direct;
3058         int ret;
3059
3060         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3061                 return -ENOTSUPP;
3062
3063         /* make sure we are in managed mode, and associated */
3064         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3065             !sdata->u.mgd.associated)
3066                 return -EINVAL;
3067
3068         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3069                  action_code, peer);
3070
3071         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3072                             max(sizeof(struct ieee80211_mgmt),
3073                                 sizeof(struct ieee80211_tdls_data)) +
3074                             50 + /* supported rates */
3075                             7 + /* ext capab */
3076                             extra_ies_len +
3077                             sizeof(struct ieee80211_tdls_lnkie));
3078         if (!skb)
3079                 return -ENOMEM;
3080
3081         skb_reserve(skb, local->hw.extra_tx_headroom);
3082
3083         switch (action_code) {
3084         case WLAN_TDLS_SETUP_REQUEST:
3085         case WLAN_TDLS_SETUP_RESPONSE:
3086         case WLAN_TDLS_SETUP_CONFIRM:
3087         case WLAN_TDLS_TEARDOWN:
3088         case WLAN_TDLS_DISCOVERY_REQUEST:
3089                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3090                                                      action_code, dialog_token,
3091                                                      status_code, skb);
3092                 send_direct = false;
3093                 break;
3094         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3095                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3096                                                  dialog_token, status_code,
3097                                                  skb);
3098                 send_direct = true;
3099                 break;
3100         default:
3101                 ret = -ENOTSUPP;
3102                 break;
3103         }
3104
3105         if (ret < 0)
3106                 goto fail;
3107
3108         if (extra_ies_len)
3109                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3110
3111         /* the TDLS link IE is always added last */
3112         switch (action_code) {
3113         case WLAN_TDLS_SETUP_REQUEST:
3114         case WLAN_TDLS_SETUP_CONFIRM:
3115         case WLAN_TDLS_TEARDOWN:
3116         case WLAN_TDLS_DISCOVERY_REQUEST:
3117                 /* we are the initiator */
3118                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3119                                            sdata->u.mgd.bssid);
3120                 break;
3121         case WLAN_TDLS_SETUP_RESPONSE:
3122         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3123                 /* we are the responder */
3124                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3125                                            sdata->u.mgd.bssid);
3126                 break;
3127         default:
3128                 ret = -ENOTSUPP;
3129                 goto fail;
3130         }
3131
3132         if (send_direct) {
3133                 ieee80211_tx_skb(sdata, skb);
3134                 return 0;
3135         }
3136
3137         /*
3138          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3139          * we should default to AC_VI.
3140          */
3141         switch (action_code) {
3142         case WLAN_TDLS_SETUP_REQUEST:
3143         case WLAN_TDLS_SETUP_RESPONSE:
3144                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3145                 skb->priority = 2;
3146                 break;
3147         default:
3148                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3149                 skb->priority = 5;
3150                 break;
3151         }
3152
3153         /* disable bottom halves when entering the Tx path */
3154         local_bh_disable();
3155         ret = ieee80211_subif_start_xmit(skb, dev);
3156         local_bh_enable();
3157
3158         return ret;
3159
3160 fail:
3161         dev_kfree_skb(skb);
3162         return ret;
3163 }
3164
3165 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3166                                u8 *peer, enum nl80211_tdls_operation oper)
3167 {
3168         struct sta_info *sta;
3169         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3170
3171         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3172                 return -ENOTSUPP;
3173
3174         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3175                 return -EINVAL;
3176
3177         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3178
3179         switch (oper) {
3180         case NL80211_TDLS_ENABLE_LINK:
3181                 rcu_read_lock();
3182                 sta = sta_info_get(sdata, peer);
3183                 if (!sta) {
3184                         rcu_read_unlock();
3185                         return -ENOLINK;
3186                 }
3187
3188                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3189                 rcu_read_unlock();
3190                 break;
3191         case NL80211_TDLS_DISABLE_LINK:
3192                 return sta_info_destroy_addr(sdata, peer);
3193         case NL80211_TDLS_TEARDOWN:
3194         case NL80211_TDLS_SETUP:
3195         case NL80211_TDLS_DISCOVERY_REQ:
3196                 /* We don't support in-driver setup/teardown/discovery */
3197                 return -ENOTSUPP;
3198         default:
3199                 return -ENOTSUPP;
3200         }
3201
3202         return 0;
3203 }
3204
3205 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3206                                   const u8 *peer, u64 *cookie)
3207 {
3208         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3209         struct ieee80211_local *local = sdata->local;
3210         struct ieee80211_qos_hdr *nullfunc;
3211         struct sk_buff *skb;
3212         int size = sizeof(*nullfunc);
3213         __le16 fc;
3214         bool qos;
3215         struct ieee80211_tx_info *info;
3216         struct sta_info *sta;
3217         struct ieee80211_chanctx_conf *chanctx_conf;
3218         enum ieee80211_band band;
3219
3220         rcu_read_lock();
3221         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3222         if (WARN_ON(!chanctx_conf)) {
3223                 rcu_read_unlock();
3224                 return -EINVAL;
3225         }
3226         band = chanctx_conf->def.chan->band;
3227         sta = sta_info_get(sdata, peer);
3228         if (sta) {
3229                 qos = test_sta_flag(sta, WLAN_STA_WME);
3230         } else {
3231                 rcu_read_unlock();
3232                 return -ENOLINK;
3233         }
3234
3235         if (qos) {
3236                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3237                                  IEEE80211_STYPE_QOS_NULLFUNC |
3238                                  IEEE80211_FCTL_FROMDS);
3239         } else {
3240                 size -= 2;
3241                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3242                                  IEEE80211_STYPE_NULLFUNC |
3243                                  IEEE80211_FCTL_FROMDS);
3244         }
3245
3246         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3247         if (!skb) {
3248                 rcu_read_unlock();
3249                 return -ENOMEM;
3250         }
3251
3252         skb->dev = dev;
3253
3254         skb_reserve(skb, local->hw.extra_tx_headroom);
3255
3256         nullfunc = (void *) skb_put(skb, size);
3257         nullfunc->frame_control = fc;
3258         nullfunc->duration_id = 0;
3259         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3260         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3261         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3262         nullfunc->seq_ctrl = 0;
3263
3264         info = IEEE80211_SKB_CB(skb);
3265
3266         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3267                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3268
3269         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3270         skb->priority = 7;
3271         if (qos)
3272                 nullfunc->qos_ctrl = cpu_to_le16(7);
3273
3274         local_bh_disable();
3275         ieee80211_xmit(sdata, skb, band);
3276         local_bh_enable();
3277         rcu_read_unlock();
3278
3279         *cookie = (unsigned long) skb;
3280         return 0;
3281 }
3282
3283 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3284                                      struct wireless_dev *wdev,
3285                                      struct cfg80211_chan_def *chandef)
3286 {
3287         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3288         struct ieee80211_local *local = wiphy_priv(wiphy);
3289         struct ieee80211_chanctx_conf *chanctx_conf;
3290         int ret = -ENODATA;
3291
3292         rcu_read_lock();
3293         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3294         if (chanctx_conf) {
3295                 *chandef = chanctx_conf->def;
3296                 ret = 0;
3297         } else if (local->open_count > 0 &&
3298                    local->open_count == local->monitors &&
3299                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3300                 if (local->use_chanctx)
3301                         *chandef = local->monitor_chandef;
3302                 else
3303                         cfg80211_chandef_create(chandef,
3304                                                 local->_oper_channel,
3305                                                 local->_oper_channel_type);
3306                 ret = 0;
3307         }
3308         rcu_read_unlock();
3309
3310         return ret;
3311 }
3312
3313 #ifdef CONFIG_PM
3314 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3315 {
3316         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3317 }
3318 #endif
3319
3320 struct cfg80211_ops mac80211_config_ops = {
3321         .add_virtual_intf = ieee80211_add_iface,
3322         .del_virtual_intf = ieee80211_del_iface,
3323         .change_virtual_intf = ieee80211_change_iface,
3324         .start_p2p_device = ieee80211_start_p2p_device,
3325         .stop_p2p_device = ieee80211_stop_p2p_device,
3326         .add_key = ieee80211_add_key,
3327         .del_key = ieee80211_del_key,
3328         .get_key = ieee80211_get_key,
3329         .set_default_key = ieee80211_config_default_key,
3330         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3331         .start_ap = ieee80211_start_ap,
3332         .change_beacon = ieee80211_change_beacon,
3333         .stop_ap = ieee80211_stop_ap,
3334         .add_station = ieee80211_add_station,
3335         .del_station = ieee80211_del_station,
3336         .change_station = ieee80211_change_station,
3337         .get_station = ieee80211_get_station,
3338         .dump_station = ieee80211_dump_station,
3339         .dump_survey = ieee80211_dump_survey,
3340 #ifdef CONFIG_MAC80211_MESH
3341         .add_mpath = ieee80211_add_mpath,
3342         .del_mpath = ieee80211_del_mpath,
3343         .change_mpath = ieee80211_change_mpath,
3344         .get_mpath = ieee80211_get_mpath,
3345         .dump_mpath = ieee80211_dump_mpath,
3346         .update_mesh_config = ieee80211_update_mesh_config,
3347         .get_mesh_config = ieee80211_get_mesh_config,
3348         .join_mesh = ieee80211_join_mesh,
3349         .leave_mesh = ieee80211_leave_mesh,
3350 #endif
3351         .change_bss = ieee80211_change_bss,
3352         .set_txq_params = ieee80211_set_txq_params,
3353         .set_monitor_channel = ieee80211_set_monitor_channel,
3354         .suspend = ieee80211_suspend,
3355         .resume = ieee80211_resume,
3356         .scan = ieee80211_scan,
3357         .sched_scan_start = ieee80211_sched_scan_start,
3358         .sched_scan_stop = ieee80211_sched_scan_stop,
3359         .auth = ieee80211_auth,
3360         .assoc = ieee80211_assoc,
3361         .deauth = ieee80211_deauth,
3362         .disassoc = ieee80211_disassoc,
3363         .join_ibss = ieee80211_join_ibss,
3364         .leave_ibss = ieee80211_leave_ibss,
3365         .set_mcast_rate = ieee80211_set_mcast_rate,
3366         .set_wiphy_params = ieee80211_set_wiphy_params,
3367         .set_tx_power = ieee80211_set_tx_power,
3368         .get_tx_power = ieee80211_get_tx_power,
3369         .set_wds_peer = ieee80211_set_wds_peer,
3370         .rfkill_poll = ieee80211_rfkill_poll,
3371         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3372         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3373         .set_power_mgmt = ieee80211_set_power_mgmt,
3374         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3375         .remain_on_channel = ieee80211_remain_on_channel,
3376         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3377         .mgmt_tx = ieee80211_mgmt_tx,
3378         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3379         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3380         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3381         .set_antenna = ieee80211_set_antenna,
3382         .get_antenna = ieee80211_get_antenna,
3383         .set_ringparam = ieee80211_set_ringparam,
3384         .get_ringparam = ieee80211_get_ringparam,
3385         .set_rekey_data = ieee80211_set_rekey_data,
3386         .tdls_oper = ieee80211_tdls_oper,
3387         .tdls_mgmt = ieee80211_tdls_mgmt,
3388         .probe_client = ieee80211_probe_client,
3389         .set_noack_map = ieee80211_set_noack_map,
3390 #ifdef CONFIG_PM
3391         .set_wakeup = ieee80211_set_wakeup,
3392 #endif
3393         .get_et_sset_count = ieee80211_get_et_sset_count,
3394         .get_et_stats = ieee80211_get_et_stats,
3395         .get_et_strings = ieee80211_get_et_strings,
3396         .get_channel = ieee80211_cfg_get_channel,
3397         .start_radar_detection = ieee80211_start_radar_detection,
3398 };