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                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  77                                    MONITOR_FLAG_ACTIVE;
  78
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  81                          * MONITOR_FLAG_ACTIVE to be changed while the
  82                          * interface is up.
  83                          * Else we would need to add a lot of cruft
  84                          * to update everything:
  85                          *      cooked_mntrs, monitor and all fif_* counters
  86                          *      reconfigure hardware
  87                          */
  88                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 110                                       struct wireless_dev *wdev)
 111 {
 112         return ieee80211_do_open(wdev, true);
 113 }
 114
 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 116                                       struct wireless_dev *wdev)
 117 {
 118         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 119 }
 120
 121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 122                                   struct net_device *dev,
 123                                   u16 noack_map)
 124 {
 125         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 126
 127         sdata->noack_map = noack_map;
 128         return 0;
 129 }
 130
 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 132                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 133                              struct key_params *params)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136         struct ieee80211_local *local = sdata->local;
 137         struct sta_info *sta = NULL;
 138         const struct ieee80211_cipher_scheme *cs = NULL;
 139         struct ieee80211_key *key;
 140         int err;
 141
 142         if (!ieee80211_sdata_running(sdata))
 143                 return -ENETDOWN;
 144
 145         /* reject WEP and TKIP keys if WEP failed to initialize */
 146         switch (params->cipher) {
 147         case WLAN_CIPHER_SUITE_WEP40:
 148         case WLAN_CIPHER_SUITE_TKIP:
 149         case WLAN_CIPHER_SUITE_WEP104:
 150                 if (IS_ERR(local->wep_tx_tfm))
 151                         return -EINVAL;
 152                 break;
 153         case WLAN_CIPHER_SUITE_CCMP:
 154         case WLAN_CIPHER_SUITE_AES_CMAC:
 155         case WLAN_CIPHER_SUITE_GCMP:
 156                 break;
 157         default:
 158                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 159                 break;
 160         }
 161
 162         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 163                                   params->key, params->seq_len, params->seq,
 164                                   cs);
 165         if (IS_ERR(key))
 166                 return PTR_ERR(key);
 167
 168         if (pairwise)
 169                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 170
 171         mutex_lock(&local->sta_mtx);
 172
 173         if (mac_addr) {
 174                 if (ieee80211_vif_is_mesh(&sdata->vif))
 175                         sta = sta_info_get(sdata, mac_addr);
 176                 else
 177                         sta = sta_info_get_bss(sdata, mac_addr);
 178                 /*
 179                  * The ASSOC test makes sure the driver is ready to
 180                  * receive the key. When wpa_supplicant has roamed
 181                  * using FT, it attempts to set the key before
 182                  * association has completed, this rejects that attempt
 183                  * so it will set the key again after assocation.
 184                  *
 185                  * TODO: accept the key if we have a station entry and
 186                  *       add it to the device after the station.
 187                  */
 188                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 189                         ieee80211_key_free_unused(key);
 190                         err = -ENOENT;
 191                         goto out_unlock;
 192                 }
 193         }
 194
 195         switch (sdata->vif.type) {
 196         case NL80211_IFTYPE_STATION:
 197                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 198                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 199                 break;
 200         case NL80211_IFTYPE_AP:
 201         case NL80211_IFTYPE_AP_VLAN:
 202                 /* Keys without a station are used for TX only */
 203                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206         case NL80211_IFTYPE_ADHOC:
 207                 /* no MFP (yet) */
 208                 break;
 209         case NL80211_IFTYPE_MESH_POINT:
 210 #ifdef CONFIG_MAC80211_MESH
 211                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 212                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 213                 break;
 214 #endif
 215         case NL80211_IFTYPE_WDS:
 216         case NL80211_IFTYPE_MONITOR:
 217         case NL80211_IFTYPE_P2P_DEVICE:
 218         case NL80211_IFTYPE_UNSPECIFIED:
 219         case NUM_NL80211_IFTYPES:
 220         case NL80211_IFTYPE_P2P_CLIENT:
 221         case NL80211_IFTYPE_P2P_GO:
 222                 /* shouldn't happen */
 223                 WARN_ON_ONCE(1);
 224                 break;
 225         }
 226
 227         if (sta)
 228                 sta->cipher_scheme = cs;
 229
 230         err = ieee80211_key_link(key, sdata, sta);
 231
 232  out_unlock:
 233         mutex_unlock(&local->sta_mtx);
 234
 235         return err;
 236 }
 237
 238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 239                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 240 {
 241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 242         struct ieee80211_local *local = sdata->local;
 243         struct sta_info *sta;
 244         struct ieee80211_key *key = NULL;
 245         int ret;
 246
 247         mutex_lock(&local->sta_mtx);
 248         mutex_lock(&local->key_mtx);
 249
 250         if (mac_addr) {
 251                 ret = -ENOENT;
 252
 253                 sta = sta_info_get_bss(sdata, mac_addr);
 254                 if (!sta)
 255                         goto out_unlock;
 256
 257                 if (pairwise)
 258                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 259                 else
 260                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 261         } else
 262                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 263
 264         if (!key) {
 265                 ret = -ENOENT;
 266                 goto out_unlock;
 267         }
 268
 269         ieee80211_key_free(key, true);
 270
 271         ret = 0;
 272  out_unlock:
 273         mutex_unlock(&local->key_mtx);
 274         mutex_unlock(&local->sta_mtx);
 275
 276         return ret;
 277 }
 278
 279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 280                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 281                              void *cookie,
 282                              void (*callback)(void *cookie,
 283                                               struct key_params *params))
 284 {
 285         struct ieee80211_sub_if_data *sdata;
 286         struct sta_info *sta = NULL;
 287         u8 seq[6] = {0};
 288         struct key_params params;
 289         struct ieee80211_key *key = NULL;
 290         u64 pn64;
 291         u32 iv32;
 292         u16 iv16;
 293         int err = -ENOENT;
 294
 295         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 296
 297         rcu_read_lock();
 298
 299         if (mac_addr) {
 300                 sta = sta_info_get_bss(sdata, mac_addr);
 301                 if (!sta)
 302                         goto out;
 303
 304                 if (pairwise)
 305                         key = rcu_dereference(sta->ptk[key_idx]);
 306                 else if (key_idx < NUM_DEFAULT_KEYS)
 307                         key = rcu_dereference(sta->gtk[key_idx]);
 308         } else
 309                 key = rcu_dereference(sdata->keys[key_idx]);
 310
 311         if (!key)
 312                 goto out;
 313
 314         memset(&params, 0, sizeof(params));
 315
 316         params.cipher = key->conf.cipher;
 317
 318         switch (key->conf.cipher) {
 319         case WLAN_CIPHER_SUITE_TKIP:
 320                 iv32 = key->u.tkip.tx.iv32;
 321                 iv16 = key->u.tkip.tx.iv16;
 322
 323                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 324                         drv_get_tkip_seq(sdata->local,
 325                                          key->conf.hw_key_idx,
 326                                          &iv32, &iv16);
 327
 328                 seq[0] = iv16 & 0xff;
 329                 seq[1] = (iv16 >> 8) & 0xff;
 330                 seq[2] = iv32 & 0xff;
 331                 seq[3] = (iv32 >> 8) & 0xff;
 332                 seq[4] = (iv32 >> 16) & 0xff;
 333                 seq[5] = (iv32 >> 24) & 0xff;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         case WLAN_CIPHER_SUITE_CCMP:
 338                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 339                 seq[0] = pn64;
 340                 seq[1] = pn64 >> 8;
 341                 seq[2] = pn64 >> 16;
 342                 seq[3] = pn64 >> 24;
 343                 seq[4] = pn64 >> 32;
 344                 seq[5] = pn64 >> 40;
 345                 params.seq = seq;
 346                 params.seq_len = 6;
 347                 break;
 348         case WLAN_CIPHER_SUITE_AES_CMAC:
 349                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 350                 seq[0] = pn64;
 351                 seq[1] = pn64 >> 8;
 352                 seq[2] = pn64 >> 16;
 353                 seq[3] = pn64 >> 24;
 354                 seq[4] = pn64 >> 32;
 355                 seq[5] = pn64 >> 40;
 356                 params.seq = seq;
 357                 params.seq_len = 6;
 358                 break;
 359         }
 360
 361         params.key = key->conf.key;
 362         params.key_len = key->conf.keylen;
 363
 364         callback(cookie, &params);
 365         err = 0;
 366
 367  out:
 368         rcu_read_unlock();
 369         return err;
 370 }
 371
 372 static int ieee80211_config_default_key(struct wiphy *wiphy,
 373                                         struct net_device *dev,
 374                                         u8 key_idx, bool uni,
 375                                         bool multi)
 376 {
 377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 378
 379         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 380
 381         return 0;
 382 }
 383
 384 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 385                                              struct net_device *dev,
 386                                              u8 key_idx)
 387 {
 388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389
 390         ieee80211_set_default_mgmt_key(sdata, key_idx);
 391
 392         return 0;
 393 }
 394
 395 void sta_set_rate_info_tx(struct sta_info *sta,
 396                           const struct ieee80211_tx_rate *rate,
 397                           struct rate_info *rinfo)
 398 {
 399         rinfo->flags = 0;
 400         if (rate->flags & IEEE80211_TX_RC_MCS) {
 401                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 402                 rinfo->mcs = rate->idx;
 403         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 404                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 405                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 406                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 407         } else {
 408                 struct ieee80211_supported_band *sband;
 409                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 410                 u16 brate;
 411
 412                 sband = sta->local->hw.wiphy->bands[
 413                                 ieee80211_get_sdata_band(sta->sdata)];
 414                 brate = sband->bitrates[rate->idx].bitrate;
 415                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 416         }
 417         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 418                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 419         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 420                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 421         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 422                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 423         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 424                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 425 }
 426
 427 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 428 {
 429         rinfo->flags = 0;
 430
 431         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 432                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 433                 rinfo->mcs = sta->last_rx_rate_idx;
 434         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 435                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 436                 rinfo->nss = sta->last_rx_rate_vht_nss;
 437                 rinfo->mcs = sta->last_rx_rate_idx;
 438         } else {
 439                 struct ieee80211_supported_band *sband;
 440                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 441                 u16 brate;
 442
 443                 sband = sta->local->hw.wiphy->bands[
 444                                 ieee80211_get_sdata_band(sta->sdata)];
 445                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 446                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 447         }
 448
 449         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 450                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 451         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 452                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 453         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 454                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 455         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 456                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 457         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 458                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 459 }
 460
 461 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 462 {
 463         struct ieee80211_sub_if_data *sdata = sta->sdata;
 464         struct ieee80211_local *local = sdata->local;
 465         struct timespec uptime;
 466         u64 packets = 0;
 467         int i, ac;
 468
 469         sinfo->generation = sdata->local->sta_generation;
 470
 471         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 472                         STATION_INFO_RX_BYTES64 |
 473                         STATION_INFO_TX_BYTES64 |
 474                         STATION_INFO_RX_PACKETS |
 475                         STATION_INFO_TX_PACKETS |
 476                         STATION_INFO_TX_RETRIES |
 477                         STATION_INFO_TX_FAILED |
 478                         STATION_INFO_TX_BITRATE |
 479                         STATION_INFO_RX_BITRATE |
 480                         STATION_INFO_RX_DROP_MISC |
 481                         STATION_INFO_BSS_PARAM |
 482                         STATION_INFO_CONNECTED_TIME |
 483                         STATION_INFO_STA_FLAGS |
 484                         STATION_INFO_BEACON_LOSS_COUNT;
 485
 486         do_posix_clock_monotonic_gettime(&uptime);
 487         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 488
 489         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 490         sinfo->tx_bytes = 0;
 491         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 492                 sinfo->tx_bytes += sta->tx_bytes[ac];
 493                 packets += sta->tx_packets[ac];
 494         }
 495         sinfo->tx_packets = packets;
 496         sinfo->rx_bytes = sta->rx_bytes;
 497         sinfo->rx_packets = sta->rx_packets;
 498         sinfo->tx_retries = sta->tx_retry_count;
 499         sinfo->tx_failed = sta->tx_retry_failed;
 500         sinfo->rx_dropped_misc = sta->rx_dropped;
 501         sinfo->beacon_loss_count = sta->beacon_loss_count;
 502
 503         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 504             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 505                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 506                 if (!local->ops->get_rssi ||
 507                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 508                         sinfo->signal = (s8)sta->last_signal;
 509                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 510         }
 511         if (sta->chains) {
 512                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 513                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 514
 515                 sinfo->chains = sta->chains;
 516                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 517                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 518                         sinfo->chain_signal_avg[i] =
 519                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 520                 }
 521         }
 522
 523         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 524         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 525
 526         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 527 #ifdef CONFIG_MAC80211_MESH
 528                 sinfo->filled |= STATION_INFO_LLID |
 529                                  STATION_INFO_PLID |
 530                                  STATION_INFO_PLINK_STATE |
 531                                  STATION_INFO_LOCAL_PM |
 532                                  STATION_INFO_PEER_PM |
 533                                  STATION_INFO_NONPEER_PM;
 534
 535                 sinfo->llid = sta->llid;
 536                 sinfo->plid = sta->plid;
 537                 sinfo->plink_state = sta->plink_state;
 538                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 539                         sinfo->filled |= STATION_INFO_T_OFFSET;
 540                         sinfo->t_offset = sta->t_offset;
 541                 }
 542                 sinfo->local_pm = sta->local_pm;
 543                 sinfo->peer_pm = sta->peer_pm;
 544                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 545 #endif
 546         }
 547
 548         sinfo->bss_param.flags = 0;
 549         if (sdata->vif.bss_conf.use_cts_prot)
 550                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 551         if (sdata->vif.bss_conf.use_short_preamble)
 552                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 553         if (sdata->vif.bss_conf.use_short_slot)
 554                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 555         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 556         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 557
 558         sinfo->sta_flags.set = 0;
 559         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 560                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 561                                 BIT(NL80211_STA_FLAG_WME) |
 562                                 BIT(NL80211_STA_FLAG_MFP) |
 563                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 564                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 565                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 566         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 567                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 568         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 569                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 570         if (test_sta_flag(sta, WLAN_STA_WME))
 571                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 572         if (test_sta_flag(sta, WLAN_STA_MFP))
 573                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 574         if (test_sta_flag(sta, WLAN_STA_AUTH))
 575                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 576         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 577                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 578         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 579                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 580 }
 581
 582 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 583         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 584         "rx_duplicates", "rx_fragments", "rx_dropped",
 585         "tx_packets", "tx_bytes", "tx_fragments",
 586         "tx_filtered", "tx_retry_failed", "tx_retries",
 587         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 588         "channel", "noise", "ch_time", "ch_time_busy",
 589         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 590 };
 591 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 592
 593 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 594                                        struct net_device *dev,
 595                                        int sset)
 596 {
 597         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 598         int rv = 0;
 599
 600         if (sset == ETH_SS_STATS)
 601                 rv += STA_STATS_LEN;
 602
 603         rv += drv_get_et_sset_count(sdata, sset);
 604
 605         if (rv == 0)
 606                 return -EOPNOTSUPP;
 607         return rv;
 608 }
 609
 610 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 611                                    struct net_device *dev,
 612                                    struct ethtool_stats *stats,
 613                                    u64 *data)
 614 {
 615         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 616         struct ieee80211_chanctx_conf *chanctx_conf;
 617         struct ieee80211_channel *channel;
 618         struct sta_info *sta;
 619         struct ieee80211_local *local = sdata->local;
 620         struct station_info sinfo;
 621         struct survey_info survey;
 622         int i, q;
 623 #define STA_STATS_SURVEY_LEN 7
 624
 625         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 626
 627 #define ADD_STA_STATS(sta)                              \
 628         do {                                            \
 629                 data[i++] += sta->rx_packets;           \
 630                 data[i++] += sta->rx_bytes;             \
 631                 data[i++] += sta->wep_weak_iv_count;    \
 632                 data[i++] += sta->num_duplicates;       \
 633                 data[i++] += sta->rx_fragments;         \
 634                 data[i++] += sta->rx_dropped;           \
 635                                                         \
 636                 data[i++] += sinfo.tx_packets;          \
 637                 data[i++] += sinfo.tx_bytes;            \
 638                 data[i++] += sta->tx_fragments;         \
 639                 data[i++] += sta->tx_filtered_count;    \
 640                 data[i++] += sta->tx_retry_failed;      \
 641                 data[i++] += sta->tx_retry_count;       \
 642                 data[i++] += sta->beacon_loss_count;    \
 643         } while (0)
 644
 645         /* For Managed stations, find the single station based on BSSID
 646          * and use that.  For interface types, iterate through all available
 647          * stations and add stats for any station that is assigned to this
 648          * network device.
 649          */
 650
 651         mutex_lock(&local->sta_mtx);
 652
 653         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 654                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 655
 656                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 657                         goto do_survey;
 658
 659                 sinfo.filled = 0;
 660                 sta_set_sinfo(sta, &sinfo);
 661
 662                 i = 0;
 663                 ADD_STA_STATS(sta);
 664
 665                 data[i++] = sta->sta_state;
 666
 667
 668                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 669                         data[i] = 100000 *
 670                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 671                 i++;
 672                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 673                         data[i] = 100000 *
 674                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 675                 i++;
 676
 677                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 678                         data[i] = (u8)sinfo.signal_avg;
 679                 i++;
 680         } else {
 681                 list_for_each_entry(sta, &local->sta_list, list) {
 682                         /* Make sure this station belongs to the proper dev */
 683                         if (sta->sdata->dev != dev)
 684                                 continue;
 685
 686                         sinfo.filled = 0;
 687                         sta_set_sinfo(sta, &sinfo);
 688                         i = 0;
 689                         ADD_STA_STATS(sta);
 690                 }
 691         }
 692
 693 do_survey:
 694         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 695         /* Get survey stats for current channel */
 696         survey.filled = 0;
 697
 698         rcu_read_lock();
 699         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 700         if (chanctx_conf)
 701                 channel = chanctx_conf->def.chan;
 702         else
 703                 channel = NULL;
 704         rcu_read_unlock();
 705
 706         if (channel) {
 707                 q = 0;
 708                 do {
 709                         survey.filled = 0;
 710                         if (drv_get_survey(local, q, &survey) != 0) {
 711                                 survey.filled = 0;
 712                                 break;
 713                         }
 714                         q++;
 715                 } while (channel != survey.channel);
 716         }
 717
 718         if (survey.filled)
 719                 data[i++] = survey.channel->center_freq;
 720         else
 721                 data[i++] = 0;
 722         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 723                 data[i++] = (u8)survey.noise;
 724         else
 725                 data[i++] = -1LL;
 726         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 727                 data[i++] = survey.channel_time;
 728         else
 729                 data[i++] = -1LL;
 730         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 731                 data[i++] = survey.channel_time_busy;
 732         else
 733                 data[i++] = -1LL;
 734         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 735                 data[i++] = survey.channel_time_ext_busy;
 736         else
 737                 data[i++] = -1LL;
 738         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 739                 data[i++] = survey.channel_time_rx;
 740         else
 741                 data[i++] = -1LL;
 742         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 743                 data[i++] = survey.channel_time_tx;
 744         else
 745                 data[i++] = -1LL;
 746
 747         mutex_unlock(&local->sta_mtx);
 748
 749         if (WARN_ON(i != STA_STATS_LEN))
 750                 return;
 751
 752         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 753 }
 754
 755 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 756                                      struct net_device *dev,
 757                                      u32 sset, u8 *data)
 758 {
 759         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 760         int sz_sta_stats = 0;
 761
 762         if (sset == ETH_SS_STATS) {
 763                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 764                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 765         }
 766         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 767 }
 768
 769 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 770                                  int idx, u8 *mac, struct station_info *sinfo)
 771 {
 772         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 773         struct ieee80211_local *local = sdata->local;
 774         struct sta_info *sta;
 775         int ret = -ENOENT;
 776
 777         mutex_lock(&local->sta_mtx);
 778
 779         sta = sta_info_get_by_idx(sdata, idx);
 780         if (sta) {
 781                 ret = 0;
 782                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 783                 sta_set_sinfo(sta, sinfo);
 784         }
 785
 786         mutex_unlock(&local->sta_mtx);
 787
 788         return ret;
 789 }
 790
 791 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 792                                  int idx, struct survey_info *survey)
 793 {
 794         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 795
 796         return drv_get_survey(local, idx, survey);
 797 }
 798
 799 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 800                                  u8 *mac, struct station_info *sinfo)
 801 {
 802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 803         struct ieee80211_local *local = sdata->local;
 804         struct sta_info *sta;
 805         int ret = -ENOENT;
 806
 807         mutex_lock(&local->sta_mtx);
 808
 809         sta = sta_info_get_bss(sdata, mac);
 810         if (sta) {
 811                 ret = 0;
 812                 sta_set_sinfo(sta, sinfo);
 813         }
 814
 815         mutex_unlock(&local->sta_mtx);
 816
 817         return ret;
 818 }
 819
 820 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 821                                          struct cfg80211_chan_def *chandef)
 822 {
 823         struct ieee80211_local *local = wiphy_priv(wiphy);
 824         struct ieee80211_sub_if_data *sdata;
 825         int ret = 0;
 826
 827         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 828                 return 0;
 829
 830         mutex_lock(&local->iflist_mtx);
 831         if (local->use_chanctx) {
 832                 sdata = rcu_dereference_protected(
 833                                 local->monitor_sdata,
 834                                 lockdep_is_held(&local->iflist_mtx));
 835                 if (sdata) {
 836                         ieee80211_vif_release_channel(sdata);
 837                         ret = ieee80211_vif_use_channel(sdata, chandef,
 838                                         IEEE80211_CHANCTX_EXCLUSIVE);
 839                 }
 840         } else if (local->open_count == local->monitors) {
 841                 local->_oper_chandef = *chandef;
 842                 ieee80211_hw_config(local, 0);
 843         }
 844
 845         if (ret == 0)
 846                 local->monitor_chandef = *chandef;
 847         mutex_unlock(&local->iflist_mtx);
 848
 849         return ret;
 850 }
 851
 852 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 853                                     const u8 *resp, size_t resp_len)
 854 {
 855         struct probe_resp *new, *old;
 856
 857         if (!resp || !resp_len)
 858                 return 1;
 859
 860         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 861
 862         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 863         if (!new)
 864                 return -ENOMEM;
 865
 866         new->len = resp_len;
 867         memcpy(new->data, resp, resp_len);
 868
 869         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 870         if (old)
 871                 kfree_rcu(old, rcu_head);
 872
 873         return 0;
 874 }
 875
 876 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 877                             struct cfg80211_beacon_data *params)
 878 {
 879         struct beacon_data *new, *old;
 880         int new_head_len, new_tail_len;
 881         int size, err;
 882         u32 changed = BSS_CHANGED_BEACON;
 883
 884         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 885
 886
 887         /* Need to have a beacon head if we don't have one yet */
 888         if (!params->head && !old)
 889                 return -EINVAL;
 890
 891         /* new or old head? */
 892         if (params->head)
 893                 new_head_len = params->head_len;
 894         else
 895                 new_head_len = old->head_len;
 896
 897         /* new or old tail? */
 898         if (params->tail || !old)
 899                 /* params->tail_len will be zero for !params->tail */
 900                 new_tail_len = params->tail_len;
 901         else
 902                 new_tail_len = old->tail_len;
 903
 904         size = sizeof(*new) + new_head_len + new_tail_len;
 905
 906         new = kzalloc(size, GFP_KERNEL);
 907         if (!new)
 908                 return -ENOMEM;
 909
 910         /* start filling the new info now */
 911
 912         /*
 913          * pointers go into the block we allocated,
 914          * memory is | beacon_data | head | tail |
 915          */
 916         new->head = ((u8 *) new) + sizeof(*new);
 917         new->tail = new->head + new_head_len;
 918         new->head_len = new_head_len;
 919         new->tail_len = new_tail_len;
 920
 921         /* copy in head */
 922         if (params->head)
 923                 memcpy(new->head, params->head, new_head_len);
 924         else
 925                 memcpy(new->head, old->head, new_head_len);
 926
 927         /* copy in optional tail */
 928         if (params->tail)
 929                 memcpy(new->tail, params->tail, new_tail_len);
 930         else
 931                 if (old)
 932                         memcpy(new->tail, old->tail, new_tail_len);
 933
 934         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 935                                        params->probe_resp_len);
 936         if (err < 0)
 937                 return err;
 938         if (err == 0)
 939                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 940
 941         rcu_assign_pointer(sdata->u.ap.beacon, new);
 942
 943         if (old)
 944                 kfree_rcu(old, rcu_head);
 945
 946         return changed;
 947 }
 948
 949 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 950                               struct cfg80211_ap_settings *params)
 951 {
 952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953         struct beacon_data *old;
 954         struct ieee80211_sub_if_data *vlan;
 955         u32 changed = BSS_CHANGED_BEACON_INT |
 956                       BSS_CHANGED_BEACON_ENABLED |
 957                       BSS_CHANGED_BEACON |
 958                       BSS_CHANGED_SSID |
 959                       BSS_CHANGED_P2P_PS;
 960         int err;
 961
 962         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 963         if (old)
 964                 return -EALREADY;
 965
 966         /* TODO: make hostapd tell us what it wants */
 967         sdata->smps_mode = IEEE80211_SMPS_OFF;
 968         sdata->needed_rx_chains = sdata->local->rx_chains;
 969         sdata->radar_required = params->radar_required;
 970
 971         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 972                                         IEEE80211_CHANCTX_SHARED);
 973         if (err)
 974                 return err;
 975         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 976
 977         /*
 978          * Apply control port protocol, this allows us to
 979          * not encrypt dynamic WEP control frames.
 980          */
 981         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 982         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 983         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 984                                                         &params->crypto,
 985                                                         sdata->vif.type);
 986
 987         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 988                 vlan->control_port_protocol =
 989                         params->crypto.control_port_ethertype;
 990                 vlan->control_port_no_encrypt =
 991                         params->crypto.control_port_no_encrypt;
 992                 vlan->encrypt_headroom =
 993                         ieee80211_cs_headroom(sdata->local,
 994                                               &params->crypto,
 995                                               vlan->vif.type);
 996         }
 997
 998         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 999         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1000         sdata->vif.bss_conf.enable_beacon = true;
1001
1002         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1003         if (params->ssid_len)
1004                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1005                        params->ssid_len);
1006         sdata->vif.bss_conf.hidden_ssid =
1007                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1008
1009         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1010                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1011         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1012                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1013         if (params->p2p_opp_ps)
1014                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1015                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1016
1017         err = ieee80211_assign_beacon(sdata, &params->beacon);
1018         if (err < 0)
1019                 return err;
1020         changed |= err;
1021
1022         err = drv_start_ap(sdata->local, sdata);
1023         if (err) {
1024                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1025
1026                 if (old)
1027                         kfree_rcu(old, rcu_head);
1028                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1029                 return err;
1030         }
1031
1032         ieee80211_bss_info_change_notify(sdata, changed);
1033
1034         netif_carrier_on(dev);
1035         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1036                 netif_carrier_on(vlan->dev);
1037
1038         return 0;
1039 }
1040
1041 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1042                                    struct cfg80211_beacon_data *params)
1043 {
1044         struct ieee80211_sub_if_data *sdata;
1045         struct beacon_data *old;
1046         int err;
1047
1048         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049
1050         /* don't allow changing the beacon while CSA is in place - offset
1051          * of channel switch counter may change
1052          */
1053         if (sdata->vif.csa_active)
1054                 return -EBUSY;
1055
1056         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1057         if (!old)
1058                 return -ENOENT;
1059
1060         err = ieee80211_assign_beacon(sdata, params);
1061         if (err < 0)
1062                 return err;
1063         ieee80211_bss_info_change_notify(sdata, err);
1064         return 0;
1065 }
1066
1067 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1068 {
1069         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1070         struct ieee80211_sub_if_data *vlan;
1071         struct ieee80211_local *local = sdata->local;
1072         struct beacon_data *old_beacon;
1073         struct probe_resp *old_probe_resp;
1074         struct cfg80211_chan_def chandef;
1075
1076         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1077         if (!old_beacon)
1078                 return -ENOENT;
1079         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1080
1081         /* abort any running channel switch */
1082         sdata->vif.csa_active = false;
1083         kfree(sdata->u.ap.next_beacon);
1084         sdata->u.ap.next_beacon = NULL;
1085
1086         cancel_work_sync(&sdata->u.ap.request_smps_work);
1087
1088         /* turn off carrier for this interface and dependent VLANs */
1089         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1090                 netif_carrier_off(vlan->dev);
1091         netif_carrier_off(dev);
1092
1093         /* remove beacon and probe response */
1094         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1095         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1096         kfree_rcu(old_beacon, rcu_head);
1097         if (old_probe_resp)
1098                 kfree_rcu(old_probe_resp, rcu_head);
1099
1100         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1101                 sta_info_flush_defer(vlan);
1102         sta_info_flush_defer(sdata);
1103         synchronize_net();
1104         rcu_barrier();
1105         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1106                 sta_info_flush_cleanup(vlan);
1107                 ieee80211_free_keys(vlan);
1108         }
1109         sta_info_flush_cleanup(sdata);
1110         ieee80211_free_keys(sdata);
1111
1112         sdata->vif.bss_conf.enable_beacon = false;
1113         sdata->vif.bss_conf.ssid_len = 0;
1114         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1115         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1116
1117         if (sdata->wdev.cac_started) {
1118                 chandef = sdata->vif.bss_conf.chandef;
1119                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1120                 cfg80211_cac_event(sdata->dev, &chandef,
1121                                    NL80211_RADAR_CAC_ABORTED,
1122                                    GFP_KERNEL);
1123         }
1124
1125         drv_stop_ap(sdata->local, sdata);
1126
1127         /* free all potentially still buffered bcast frames */
1128         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1129         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1130
1131         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1132         ieee80211_vif_release_channel(sdata);
1133
1134         return 0;
1135 }
1136
1137 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1138 struct iapp_layer2_update {
1139         u8 da[ETH_ALEN];        /* broadcast */
1140         u8 sa[ETH_ALEN];        /* STA addr */
1141         __be16 len;             /* 6 */
1142         u8 dsap;                /* 0 */
1143         u8 ssap;                /* 0 */
1144         u8 control;
1145         u8 xid_info[3];
1146 } __packed;
1147
1148 static void ieee80211_send_layer2_update(struct sta_info *sta)
1149 {
1150         struct iapp_layer2_update *msg;
1151         struct sk_buff *skb;
1152
1153         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1154          * bridge devices */
1155
1156         skb = dev_alloc_skb(sizeof(*msg));
1157         if (!skb)
1158                 return;
1159         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1160
1161         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1162          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1163
1164         eth_broadcast_addr(msg->da);
1165         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1166         msg->len = htons(6);
1167         msg->dsap = 0;
1168         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1169         msg->control = 0xaf;    /* XID response lsb.1111F101.
1170                                  * F=0 (no poll command; unsolicited frame) */
1171         msg->xid_info[0] = 0x81;        /* XID format identifier */
1172         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1173         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1174
1175         skb->dev = sta->sdata->dev;
1176         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1177         memset(skb->cb, 0, sizeof(skb->cb));
1178         netif_rx_ni(skb);
1179 }
1180
1181 static int sta_apply_auth_flags(struct ieee80211_local *local,
1182                                 struct sta_info *sta,
1183                                 u32 mask, u32 set)
1184 {
1185         int ret;
1186
1187         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1188             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1189             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1190                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1191                 if (ret)
1192                         return ret;
1193         }
1194
1195         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1196             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1197             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1198                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1199                 if (ret)
1200                         return ret;
1201         }
1202
1203         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1204                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1205                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1206                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1207                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1208                 else
1209                         ret = 0;
1210                 if (ret)
1211                         return ret;
1212         }
1213
1214         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1215             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1216             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1217                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1218                 if (ret)
1219                         return ret;
1220         }
1221
1222         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1223             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1224             test_sta_flag(sta, WLAN_STA_AUTH)) {
1225                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1226                 if (ret)
1227                         return ret;
1228         }
1229
1230         return 0;
1231 }
1232
1233 static int sta_apply_parameters(struct ieee80211_local *local,
1234                                 struct sta_info *sta,
1235                                 struct station_parameters *params)
1236 {
1237         int ret = 0;
1238         struct ieee80211_supported_band *sband;
1239         struct ieee80211_sub_if_data *sdata = sta->sdata;
1240         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1241         u32 mask, set;
1242
1243         sband = local->hw.wiphy->bands[band];
1244
1245         mask = params->sta_flags_mask;
1246         set = params->sta_flags_set;
1247
1248         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1249                 /*
1250                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1251                  * API but must follow AUTHENTICATED for driver state.
1252                  */
1253                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1254                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1255                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1256                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1257         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1258                 /*
1259                  * TDLS -- everything follows authorized, but
1260                  * only becoming authorized is possible, not
1261                  * going back
1262                  */
1263                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1264                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1265                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1266                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1267                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1268                 }
1269         }
1270
1271         ret = sta_apply_auth_flags(local, sta, mask, set);
1272         if (ret)
1273                 return ret;
1274
1275         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1276                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1277                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1278                 else
1279                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1280         }
1281
1282         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1283                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1284                         set_sta_flag(sta, WLAN_STA_WME);
1285                         sta->sta.wme = true;
1286                 } else {
1287                         clear_sta_flag(sta, WLAN_STA_WME);
1288                         sta->sta.wme = false;
1289                 }
1290         }
1291
1292         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1293                 if (set & BIT(NL80211_STA_FLAG_MFP))
1294                         set_sta_flag(sta, WLAN_STA_MFP);
1295                 else
1296                         clear_sta_flag(sta, WLAN_STA_MFP);
1297         }
1298
1299         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1300                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1301                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1302                 else
1303                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1304         }
1305
1306         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1307                 sta->sta.uapsd_queues = params->uapsd_queues;
1308                 sta->sta.max_sp = params->max_sp;
1309         }
1310
1311         /*
1312          * cfg80211 validates this (1-2007) and allows setting the AID
1313          * only when creating a new station entry
1314          */
1315         if (params->aid)
1316                 sta->sta.aid = params->aid;
1317
1318         /*
1319          * Some of the following updates would be racy if called on an
1320          * existing station, via ieee80211_change_station(). However,
1321          * all such changes are rejected by cfg80211 except for updates
1322          * changing the supported rates on an existing but not yet used
1323          * TDLS peer.
1324          */
1325
1326         if (params->listen_interval >= 0)
1327                 sta->listen_interval = params->listen_interval;
1328
1329         if (params->supported_rates) {
1330                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1331                                          sband, params->supported_rates,
1332                                          params->supported_rates_len,
1333                                          &sta->sta.supp_rates[band]);
1334         }
1335
1336         if (params->ht_capa)
1337                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1338                                                   params->ht_capa, sta);
1339
1340         if (params->vht_capa)
1341                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1342                                                     params->vht_capa, sta);
1343
1344         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1345 #ifdef CONFIG_MAC80211_MESH
1346                 u32 changed = 0;
1347
1348                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1349                         switch (params->plink_state) {
1350                         case NL80211_PLINK_ESTAB:
1351                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1352                                         changed = mesh_plink_inc_estab_count(
1353                                                         sdata);
1354                                 sta->plink_state = params->plink_state;
1355
1356                                 ieee80211_mps_sta_status_update(sta);
1357                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1358                                               sdata->u.mesh.mshcfg.power_mode);
1359                                 break;
1360                         case NL80211_PLINK_LISTEN:
1361                         case NL80211_PLINK_BLOCKED:
1362                         case NL80211_PLINK_OPN_SNT:
1363                         case NL80211_PLINK_OPN_RCVD:
1364                         case NL80211_PLINK_CNF_RCVD:
1365                         case NL80211_PLINK_HOLDING:
1366                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1367                                         changed = mesh_plink_dec_estab_count(
1368                                                         sdata);
1369                                 sta->plink_state = params->plink_state;
1370
1371                                 ieee80211_mps_sta_status_update(sta);
1372                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1373                                                 NL80211_MESH_POWER_UNKNOWN);
1374                                 break;
1375                         default:
1376                                 /*  nothing  */
1377                                 break;
1378                         }
1379                 }
1380
1381                 switch (params->plink_action) {
1382                 case NL80211_PLINK_ACTION_NO_ACTION:
1383                         /* nothing */
1384                         break;
1385                 case NL80211_PLINK_ACTION_OPEN:
1386                         changed |= mesh_plink_open(sta);
1387                         break;
1388                 case NL80211_PLINK_ACTION_BLOCK:
1389                         changed |= mesh_plink_block(sta);
1390                         break;
1391                 }
1392
1393                 if (params->local_pm)
1394                         changed |=
1395                               ieee80211_mps_set_sta_local_pm(sta,
1396                                                              params->local_pm);
1397                 ieee80211_mbss_info_change_notify(sdata, changed);
1398 #endif
1399         }
1400
1401         return 0;
1402 }
1403
1404 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1405                                  u8 *mac, struct station_parameters *params)
1406 {
1407         struct ieee80211_local *local = wiphy_priv(wiphy);
1408         struct sta_info *sta;
1409         struct ieee80211_sub_if_data *sdata;
1410         int err;
1411         int layer2_update;
1412
1413         if (params->vlan) {
1414                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1415
1416                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1417                     sdata->vif.type != NL80211_IFTYPE_AP)
1418                         return -EINVAL;
1419         } else
1420                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1421
1422         if (ether_addr_equal(mac, sdata->vif.addr))
1423                 return -EINVAL;
1424
1425         if (is_multicast_ether_addr(mac))
1426                 return -EINVAL;
1427
1428         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1429         if (!sta)
1430                 return -ENOMEM;
1431
1432         /*
1433          * defaults -- if userspace wants something else we'll
1434          * change it accordingly in sta_apply_parameters()
1435          */
1436         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1437                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1438                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1439         }
1440
1441         err = sta_apply_parameters(local, sta, params);
1442         if (err) {
1443                 sta_info_free(local, sta);
1444                 return err;
1445         }
1446
1447         /*
1448          * for TDLS, rate control should be initialized only when
1449          * rates are known and station is marked authorized
1450          */
1451         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1452                 rate_control_rate_init(sta);
1453
1454         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1455                 sdata->vif.type == NL80211_IFTYPE_AP;
1456
1457         err = sta_info_insert_rcu(sta);
1458         if (err) {
1459                 rcu_read_unlock();
1460                 return err;
1461         }
1462
1463         if (layer2_update)
1464                 ieee80211_send_layer2_update(sta);
1465
1466         rcu_read_unlock();
1467
1468         return 0;
1469 }
1470
1471 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1472                                  u8 *mac)
1473 {
1474         struct ieee80211_sub_if_data *sdata;
1475
1476         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478         if (mac)
1479                 return sta_info_destroy_addr_bss(sdata, mac);
1480
1481         sta_info_flush(sdata);
1482         return 0;
1483 }
1484
1485 static int ieee80211_change_station(struct wiphy *wiphy,
1486                                     struct net_device *dev, u8 *mac,
1487                                     struct station_parameters *params)
1488 {
1489         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490         struct ieee80211_local *local = wiphy_priv(wiphy);
1491         struct sta_info *sta;
1492         struct ieee80211_sub_if_data *vlansdata;
1493         enum cfg80211_station_type statype;
1494         int err;
1495
1496         mutex_lock(&local->sta_mtx);
1497
1498         sta = sta_info_get_bss(sdata, mac);
1499         if (!sta) {
1500                 err = -ENOENT;
1501                 goto out_err;
1502         }
1503
1504         switch (sdata->vif.type) {
1505         case NL80211_IFTYPE_MESH_POINT:
1506                 if (sdata->u.mesh.user_mpm)
1507                         statype = CFG80211_STA_MESH_PEER_USER;
1508                 else
1509                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1510                 break;
1511         case NL80211_IFTYPE_ADHOC:
1512                 statype = CFG80211_STA_IBSS;
1513                 break;
1514         case NL80211_IFTYPE_STATION:
1515                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1516                         statype = CFG80211_STA_AP_STA;
1517                         break;
1518                 }
1519                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1520                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1521                 else
1522                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1523                 break;
1524         case NL80211_IFTYPE_AP:
1525         case NL80211_IFTYPE_AP_VLAN:
1526                 statype = CFG80211_STA_AP_CLIENT;
1527                 break;
1528         default:
1529                 err = -EOPNOTSUPP;
1530                 goto out_err;
1531         }
1532
1533         err = cfg80211_check_station_change(wiphy, params, statype);
1534         if (err)
1535                 goto out_err;
1536
1537         if (params->vlan && params->vlan != sta->sdata->dev) {
1538                 bool prev_4addr = false;
1539                 bool new_4addr = false;
1540
1541                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1542
1543                 if (params->vlan->ieee80211_ptr->use_4addr) {
1544                         if (vlansdata->u.vlan.sta) {
1545                                 err = -EBUSY;
1546                                 goto out_err;
1547                         }
1548
1549                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1550                         new_4addr = true;
1551                 }
1552
1553                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1554                     sta->sdata->u.vlan.sta) {
1555                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1556                         prev_4addr = true;
1557                 }
1558
1559                 sta->sdata = vlansdata;
1560
1561                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1562                     prev_4addr != new_4addr) {
1563                         if (new_4addr)
1564                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1565                         else
1566                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1567                 }
1568
1569                 ieee80211_send_layer2_update(sta);
1570         }
1571
1572         err = sta_apply_parameters(local, sta, params);
1573         if (err)
1574                 goto out_err;
1575
1576         /* When peer becomes authorized, init rate control as well */
1577         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1578             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1579                 rate_control_rate_init(sta);
1580
1581         mutex_unlock(&local->sta_mtx);
1582
1583         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1584              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1585             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1586             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1587             sta_info_tx_streams(sta) != 1) {
1588                 ht_dbg(sta->sdata,
1589                        "%pM just authorized and MIMO capable - update SMPS\n",
1590                        sta->sta.addr);
1591                 ieee80211_send_smps_action(sta->sdata,
1592                         sta->sdata->bss->req_smps,
1593                         sta->sta.addr,
1594                         sta->sdata->vif.bss_conf.bssid);
1595         }
1596
1597         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1598             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1599                 ieee80211_recalc_ps(local, -1);
1600                 ieee80211_recalc_ps_vif(sdata);
1601         }
1602
1603         return 0;
1604 out_err:
1605         mutex_unlock(&local->sta_mtx);
1606         return err;
1607 }
1608
1609 #ifdef CONFIG_MAC80211_MESH
1610 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1611                                  u8 *dst, u8 *next_hop)
1612 {
1613         struct ieee80211_sub_if_data *sdata;
1614         struct mesh_path *mpath;
1615         struct sta_info *sta;
1616
1617         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1618
1619         rcu_read_lock();
1620         sta = sta_info_get(sdata, next_hop);
1621         if (!sta) {
1622                 rcu_read_unlock();
1623                 return -ENOENT;
1624         }
1625
1626         mpath = mesh_path_add(sdata, dst);
1627         if (IS_ERR(mpath)) {
1628                 rcu_read_unlock();
1629                 return PTR_ERR(mpath);
1630         }
1631
1632         mesh_path_fix_nexthop(mpath, sta);
1633
1634         rcu_read_unlock();
1635         return 0;
1636 }
1637
1638 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1639                                u8 *dst)
1640 {
1641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1642
1643         if (dst)
1644                 return mesh_path_del(sdata, dst);
1645
1646         mesh_path_flush_by_iface(sdata);
1647         return 0;
1648 }
1649
1650 static int ieee80211_change_mpath(struct wiphy *wiphy,
1651                                     struct net_device *dev,
1652                                     u8 *dst, u8 *next_hop)
1653 {
1654         struct ieee80211_sub_if_data *sdata;
1655         struct mesh_path *mpath;
1656         struct sta_info *sta;
1657
1658         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659
1660         rcu_read_lock();
1661
1662         sta = sta_info_get(sdata, next_hop);
1663         if (!sta) {
1664                 rcu_read_unlock();
1665                 return -ENOENT;
1666         }
1667
1668         mpath = mesh_path_lookup(sdata, dst);
1669         if (!mpath) {
1670                 rcu_read_unlock();
1671                 return -ENOENT;
1672         }
1673
1674         mesh_path_fix_nexthop(mpath, sta);
1675
1676         rcu_read_unlock();
1677         return 0;
1678 }
1679
1680 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1681                             struct mpath_info *pinfo)
1682 {
1683         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1684
1685         if (next_hop_sta)
1686                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1687         else
1688                 memset(next_hop, 0, ETH_ALEN);
1689
1690         memset(pinfo, 0, sizeof(*pinfo));
1691
1692         pinfo->generation = mesh_paths_generation;
1693
1694         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1695                         MPATH_INFO_SN |
1696                         MPATH_INFO_METRIC |
1697                         MPATH_INFO_EXPTIME |
1698                         MPATH_INFO_DISCOVERY_TIMEOUT |
1699                         MPATH_INFO_DISCOVERY_RETRIES |
1700                         MPATH_INFO_FLAGS;
1701
1702         pinfo->frame_qlen = mpath->frame_queue.qlen;
1703         pinfo->sn = mpath->sn;
1704         pinfo->metric = mpath->metric;
1705         if (time_before(jiffies, mpath->exp_time))
1706                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1707         pinfo->discovery_timeout =
1708                         jiffies_to_msecs(mpath->discovery_timeout);
1709         pinfo->discovery_retries = mpath->discovery_retries;
1710         if (mpath->flags & MESH_PATH_ACTIVE)
1711                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1712         if (mpath->flags & MESH_PATH_RESOLVING)
1713                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1714         if (mpath->flags & MESH_PATH_SN_VALID)
1715                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1716         if (mpath->flags & MESH_PATH_FIXED)
1717                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1718         if (mpath->flags & MESH_PATH_RESOLVED)
1719                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1720 }
1721
1722 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1723                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1724
1725 {
1726         struct ieee80211_sub_if_data *sdata;
1727         struct mesh_path *mpath;
1728
1729         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731         rcu_read_lock();
1732         mpath = mesh_path_lookup(sdata, dst);
1733         if (!mpath) {
1734                 rcu_read_unlock();
1735                 return -ENOENT;
1736         }
1737         memcpy(dst, mpath->dst, ETH_ALEN);
1738         mpath_set_pinfo(mpath, next_hop, pinfo);
1739         rcu_read_unlock();
1740         return 0;
1741 }
1742
1743 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1744                                  int idx, u8 *dst, u8 *next_hop,
1745                                  struct mpath_info *pinfo)
1746 {
1747         struct ieee80211_sub_if_data *sdata;
1748         struct mesh_path *mpath;
1749
1750         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1751
1752         rcu_read_lock();
1753         mpath = mesh_path_lookup_by_idx(sdata, idx);
1754         if (!mpath) {
1755                 rcu_read_unlock();
1756                 return -ENOENT;
1757         }
1758         memcpy(dst, mpath->dst, ETH_ALEN);
1759         mpath_set_pinfo(mpath, next_hop, pinfo);
1760         rcu_read_unlock();
1761         return 0;
1762 }
1763
1764 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1765                                 struct net_device *dev,
1766                                 struct mesh_config *conf)
1767 {
1768         struct ieee80211_sub_if_data *sdata;
1769         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1770
1771         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1772         return 0;
1773 }
1774
1775 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1776 {
1777         return (mask >> (parm-1)) & 0x1;
1778 }
1779
1780 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1781                 const struct mesh_setup *setup)
1782 {
1783         u8 *new_ie;
1784         const u8 *old_ie;
1785         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1786                                         struct ieee80211_sub_if_data, u.mesh);
1787
1788         /* allocate information elements */
1789         new_ie = NULL;
1790         old_ie = ifmsh->ie;
1791
1792         if (setup->ie_len) {
1793                 new_ie = kmemdup(setup->ie, setup->ie_len,
1794                                 GFP_KERNEL);
1795                 if (!new_ie)
1796                         return -ENOMEM;
1797         }
1798         ifmsh->ie_len = setup->ie_len;
1799         ifmsh->ie = new_ie;
1800         kfree(old_ie);
1801
1802         /* now copy the rest of the setup parameters */
1803         ifmsh->mesh_id_len = setup->mesh_id_len;
1804         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1805         ifmsh->mesh_sp_id = setup->sync_method;
1806         ifmsh->mesh_pp_id = setup->path_sel_proto;
1807         ifmsh->mesh_pm_id = setup->path_metric;
1808         ifmsh->user_mpm = setup->user_mpm;
1809         ifmsh->mesh_auth_id = setup->auth_id;
1810         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1811         if (setup->is_authenticated)
1812                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1813         if (setup->is_secure)
1814                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1815
1816         /* mcast rate setting in Mesh Node */
1817         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1818                                                 sizeof(setup->mcast_rate));
1819         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1820
1821         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1822         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1823
1824         return 0;
1825 }
1826
1827 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1828                                         struct net_device *dev, u32 mask,
1829                                         const struct mesh_config *nconf)
1830 {
1831         struct mesh_config *conf;
1832         struct ieee80211_sub_if_data *sdata;
1833         struct ieee80211_if_mesh *ifmsh;
1834
1835         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836         ifmsh = &sdata->u.mesh;
1837
1838         /* Set the config options which we are interested in setting */
1839         conf = &(sdata->u.mesh.mshcfg);
1840         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1841                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1842         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1843                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1844         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1845                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1846         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1847                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1848         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1849                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1850         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1851                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1852         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1853                 conf->element_ttl = nconf->element_ttl;
1854         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1855                 if (ifmsh->user_mpm)
1856                         return -EBUSY;
1857                 conf->auto_open_plinks = nconf->auto_open_plinks;
1858         }
1859         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1860                 conf->dot11MeshNbrOffsetMaxNeighbor =
1861                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1862         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1863                 conf->dot11MeshHWMPmaxPREQretries =
1864                         nconf->dot11MeshHWMPmaxPREQretries;
1865         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1866                 conf->path_refresh_time = nconf->path_refresh_time;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1868                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1870                 conf->dot11MeshHWMPactivePathTimeout =
1871                         nconf->dot11MeshHWMPactivePathTimeout;
1872         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1873                 conf->dot11MeshHWMPpreqMinInterval =
1874                         nconf->dot11MeshHWMPpreqMinInterval;
1875         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1876                 conf->dot11MeshHWMPperrMinInterval =
1877                         nconf->dot11MeshHWMPperrMinInterval;
1878         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1879                            mask))
1880                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1881                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1882         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1883                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1884                 ieee80211_mesh_root_setup(ifmsh);
1885         }
1886         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1887                 /* our current gate announcement implementation rides on root
1888                  * announcements, so require this ifmsh to also be a root node
1889                  * */
1890                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1891                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1892                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1893                         ieee80211_mesh_root_setup(ifmsh);
1894                 }
1895                 conf->dot11MeshGateAnnouncementProtocol =
1896                         nconf->dot11MeshGateAnnouncementProtocol;
1897         }
1898         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1899                 conf->dot11MeshHWMPRannInterval =
1900                         nconf->dot11MeshHWMPRannInterval;
1901         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1902                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1904                 /* our RSSI threshold implementation is supported only for
1905                  * devices that report signal in dBm.
1906                  */
1907                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1908                         return -ENOTSUPP;
1909                 conf->rssi_threshold = nconf->rssi_threshold;
1910         }
1911         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1912                 conf->ht_opmode = nconf->ht_opmode;
1913                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1914                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1915         }
1916         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1917                 conf->dot11MeshHWMPactivePathToRootTimeout =
1918                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1919         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1920                 conf->dot11MeshHWMProotInterval =
1921                         nconf->dot11MeshHWMProotInterval;
1922         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1923                 conf->dot11MeshHWMPconfirmationInterval =
1924                         nconf->dot11MeshHWMPconfirmationInterval;
1925         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1926                 conf->power_mode = nconf->power_mode;
1927                 ieee80211_mps_local_status_update(sdata);
1928         }
1929         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1930                 conf->dot11MeshAwakeWindowDuration =
1931                         nconf->dot11MeshAwakeWindowDuration;
1932         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1933                 conf->plink_timeout = nconf->plink_timeout;
1934         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1935         return 0;
1936 }
1937
1938 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1939                                const struct mesh_config *conf,
1940                                const struct mesh_setup *setup)
1941 {
1942         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1943         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1944         int err;
1945
1946         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1947         err = copy_mesh_setup(ifmsh, setup);
1948         if (err)
1949                 return err;
1950
1951         /* can mesh use other SMPS modes? */
1952         sdata->smps_mode = IEEE80211_SMPS_OFF;
1953         sdata->needed_rx_chains = sdata->local->rx_chains;
1954
1955         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1956                                         IEEE80211_CHANCTX_SHARED);
1957         if (err)
1958                 return err;
1959
1960         return ieee80211_start_mesh(sdata);
1961 }
1962
1963 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1964 {
1965         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1966
1967         ieee80211_stop_mesh(sdata);
1968         ieee80211_vif_release_channel(sdata);
1969
1970         return 0;
1971 }
1972 #endif
1973
1974 static int ieee80211_change_bss(struct wiphy *wiphy,
1975                                 struct net_device *dev,
1976                                 struct bss_parameters *params)
1977 {
1978         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1979         enum ieee80211_band band;
1980         u32 changed = 0;
1981
1982         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1983                 return -ENOENT;
1984
1985         band = ieee80211_get_sdata_band(sdata);
1986
1987         if (params->use_cts_prot >= 0) {
1988                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1989                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1990         }
1991         if (params->use_short_preamble >= 0) {
1992                 sdata->vif.bss_conf.use_short_preamble =
1993                         params->use_short_preamble;
1994                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1995         }
1996
1997         if (!sdata->vif.bss_conf.use_short_slot &&
1998             band == IEEE80211_BAND_5GHZ) {
1999                 sdata->vif.bss_conf.use_short_slot = true;
2000                 changed |= BSS_CHANGED_ERP_SLOT;
2001         }
2002
2003         if (params->use_short_slot_time >= 0) {
2004                 sdata->vif.bss_conf.use_short_slot =
2005                         params->use_short_slot_time;
2006                 changed |= BSS_CHANGED_ERP_SLOT;
2007         }
2008
2009         if (params->basic_rates) {
2010                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2011                                          wiphy->bands[band],
2012                                          params->basic_rates,
2013                                          params->basic_rates_len,
2014                                          &sdata->vif.bss_conf.basic_rates);
2015                 changed |= BSS_CHANGED_BASIC_RATES;
2016         }
2017
2018         if (params->ap_isolate >= 0) {
2019                 if (params->ap_isolate)
2020                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2021                 else
2022                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2023         }
2024
2025         if (params->ht_opmode >= 0) {
2026                 sdata->vif.bss_conf.ht_operation_mode =
2027                         (u16) params->ht_opmode;
2028                 changed |= BSS_CHANGED_HT;
2029         }
2030
2031         if (params->p2p_ctwindow >= 0) {
2032                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2033                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2034                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2035                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2036                 changed |= BSS_CHANGED_P2P_PS;
2037         }
2038
2039         if (params->p2p_opp_ps > 0) {
2040                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2041                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2042                 changed |= BSS_CHANGED_P2P_PS;
2043         } else if (params->p2p_opp_ps == 0) {
2044                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2045                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2046                 changed |= BSS_CHANGED_P2P_PS;
2047         }
2048
2049         ieee80211_bss_info_change_notify(sdata, changed);
2050
2051         return 0;
2052 }
2053
2054 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2055                                     struct net_device *dev,
2056                                     struct ieee80211_txq_params *params)
2057 {
2058         struct ieee80211_local *local = wiphy_priv(wiphy);
2059         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2060         struct ieee80211_tx_queue_params p;
2061
2062         if (!local->ops->conf_tx)
2063                 return -EOPNOTSUPP;
2064
2065         if (local->hw.queues < IEEE80211_NUM_ACS)
2066                 return -EOPNOTSUPP;
2067
2068         memset(&p, 0, sizeof(p));
2069         p.aifs = params->aifs;
2070         p.cw_max = params->cwmax;
2071         p.cw_min = params->cwmin;
2072         p.txop = params->txop;
2073
2074         /*
2075          * Setting tx queue params disables u-apsd because it's only
2076          * called in master mode.
2077          */
2078         p.uapsd = false;
2079
2080         sdata->tx_conf[params->ac] = p;
2081         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2082                 wiphy_debug(local->hw.wiphy,
2083                             "failed to set TX queue parameters for AC %d\n",
2084                             params->ac);
2085                 return -EINVAL;
2086         }
2087
2088         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2089
2090         return 0;
2091 }
2092
2093 #ifdef CONFIG_PM
2094 static int ieee80211_suspend(struct wiphy *wiphy,
2095                              struct cfg80211_wowlan *wowlan)
2096 {
2097         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2098 }
2099
2100 static int ieee80211_resume(struct wiphy *wiphy)
2101 {
2102         return __ieee80211_resume(wiphy_priv(wiphy));
2103 }
2104 #else
2105 #define ieee80211_suspend NULL
2106 #define ieee80211_resume NULL
2107 #endif
2108
2109 static int ieee80211_scan(struct wiphy *wiphy,
2110                           struct cfg80211_scan_request *req)
2111 {
2112         struct ieee80211_sub_if_data *sdata;
2113
2114         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2115
2116         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2117         case NL80211_IFTYPE_STATION:
2118         case NL80211_IFTYPE_ADHOC:
2119         case NL80211_IFTYPE_MESH_POINT:
2120         case NL80211_IFTYPE_P2P_CLIENT:
2121         case NL80211_IFTYPE_P2P_DEVICE:
2122                 break;
2123         case NL80211_IFTYPE_P2P_GO:
2124                 if (sdata->local->ops->hw_scan)
2125                         break;
2126                 /*
2127                  * FIXME: implement NoA while scanning in software,
2128                  * for now fall through to allow scanning only when
2129                  * beaconing hasn't been configured yet
2130                  */
2131         case NL80211_IFTYPE_AP:
2132                 /*
2133                  * If the scan has been forced (and the driver supports
2134                  * forcing), don't care about being beaconing already.
2135                  * This will create problems to the attached stations (e.g. all
2136                  * the  frames sent while scanning on other channel will be
2137                  * lost)
2138                  */
2139                 if (sdata->u.ap.beacon &&
2140                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2141                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2142                         return -EOPNOTSUPP;
2143                 break;
2144         default:
2145                 return -EOPNOTSUPP;
2146         }
2147
2148         return ieee80211_request_scan(sdata, req);
2149 }
2150
2151 static int
2152 ieee80211_sched_scan_start(struct wiphy *wiphy,
2153                            struct net_device *dev,
2154                            struct cfg80211_sched_scan_request *req)
2155 {
2156         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2157
2158         if (!sdata->local->ops->sched_scan_start)
2159                 return -EOPNOTSUPP;
2160
2161         return ieee80211_request_sched_scan_start(sdata, req);
2162 }
2163
2164 static int
2165 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2166 {
2167         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2168
2169         if (!sdata->local->ops->sched_scan_stop)
2170                 return -EOPNOTSUPP;
2171
2172         return ieee80211_request_sched_scan_stop(sdata);
2173 }
2174
2175 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2176                           struct cfg80211_auth_request *req)
2177 {
2178         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2179 }
2180
2181 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2182                            struct cfg80211_assoc_request *req)
2183 {
2184         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2185 }
2186
2187 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2188                             struct cfg80211_deauth_request *req)
2189 {
2190         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2191 }
2192
2193 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2194                               struct cfg80211_disassoc_request *req)
2195 {
2196         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2197 }
2198
2199 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2200                                struct cfg80211_ibss_params *params)
2201 {
2202         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2203 }
2204
2205 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2206 {
2207         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2208 }
2209
2210 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2211                                     int rate[IEEE80211_NUM_BANDS])
2212 {
2213         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2214
2215         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2216                sizeof(int) * IEEE80211_NUM_BANDS);
2217
2218         return 0;
2219 }
2220
2221 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224         int err;
2225
2226         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2227                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2228
2229                 if (err)
2230                         return err;
2231         }
2232
2233         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2234                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2235
2236                 if (err)
2237                         return err;
2238         }
2239
2240         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2241                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2242
2243                 if (err)
2244                         return err;
2245         }
2246
2247         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2248                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2249                         return -EINVAL;
2250                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2251         }
2252         if (changed & WIPHY_PARAM_RETRY_LONG) {
2253                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2254                         return -EINVAL;
2255                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2256         }
2257         if (changed &
2258             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2259                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2260
2261         return 0;
2262 }
2263
2264 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2265                                   struct wireless_dev *wdev,
2266                                   enum nl80211_tx_power_setting type, int mbm)
2267 {
2268         struct ieee80211_local *local = wiphy_priv(wiphy);
2269         struct ieee80211_sub_if_data *sdata;
2270
2271         if (wdev) {
2272                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2273
2274                 switch (type) {
2275                 case NL80211_TX_POWER_AUTOMATIC:
2276                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2277                         break;
2278                 case NL80211_TX_POWER_LIMITED:
2279                 case NL80211_TX_POWER_FIXED:
2280                         if (mbm < 0 || (mbm % 100))
2281                                 return -EOPNOTSUPP;
2282                         sdata->user_power_level = MBM_TO_DBM(mbm);
2283                         break;
2284                 }
2285
2286                 ieee80211_recalc_txpower(sdata);
2287
2288                 return 0;
2289         }
2290
2291         switch (type) {
2292         case NL80211_TX_POWER_AUTOMATIC:
2293                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2294                 break;
2295         case NL80211_TX_POWER_LIMITED:
2296         case NL80211_TX_POWER_FIXED:
2297                 if (mbm < 0 || (mbm % 100))
2298                         return -EOPNOTSUPP;
2299                 local->user_power_level = MBM_TO_DBM(mbm);
2300                 break;
2301         }
2302
2303         mutex_lock(&local->iflist_mtx);
2304         list_for_each_entry(sdata, &local->interfaces, list)
2305                 sdata->user_power_level = local->user_power_level;
2306         list_for_each_entry(sdata, &local->interfaces, list)
2307                 ieee80211_recalc_txpower(sdata);
2308         mutex_unlock(&local->iflist_mtx);
2309
2310         return 0;
2311 }
2312
2313 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2314                                   struct wireless_dev *wdev,
2315                                   int *dbm)
2316 {
2317         struct ieee80211_local *local = wiphy_priv(wiphy);
2318         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2319
2320         if (!local->use_chanctx)
2321                 *dbm = local->hw.conf.power_level;
2322         else
2323                 *dbm = sdata->vif.bss_conf.txpower;
2324
2325         return 0;
2326 }
2327
2328 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2329                                   const u8 *addr)
2330 {
2331         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2332
2333         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2334
2335         return 0;
2336 }
2337
2338 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2339 {
2340         struct ieee80211_local *local = wiphy_priv(wiphy);
2341
2342         drv_rfkill_poll(local);
2343 }
2344
2345 #ifdef CONFIG_NL80211_TESTMODE
2346 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2347                                   struct wireless_dev *wdev,
2348                                   void *data, int len)
2349 {
2350         struct ieee80211_local *local = wiphy_priv(wiphy);
2351         struct ieee80211_vif *vif = NULL;
2352
2353         if (!local->ops->testmode_cmd)
2354                 return -EOPNOTSUPP;
2355
2356         if (wdev) {
2357                 struct ieee80211_sub_if_data *sdata;
2358
2359                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2360                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2361                         vif = &sdata->vif;
2362         }
2363
2364         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2365 }
2366
2367 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2368                                    struct sk_buff *skb,
2369                                    struct netlink_callback *cb,
2370                                    void *data, int len)
2371 {
2372         struct ieee80211_local *local = wiphy_priv(wiphy);
2373
2374         if (!local->ops->testmode_dump)
2375                 return -EOPNOTSUPP;
2376
2377         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2378 }
2379 #endif
2380
2381 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2382                                 enum ieee80211_smps_mode smps_mode)
2383 {
2384         struct sta_info *sta;
2385         enum ieee80211_smps_mode old_req;
2386         int i;
2387
2388         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2389                 return -EINVAL;
2390
2391         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2392                 return 0;
2393
2394         old_req = sdata->u.ap.req_smps;
2395         sdata->u.ap.req_smps = smps_mode;
2396
2397         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2398         if (old_req == smps_mode ||
2399             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2400                 return 0;
2401
2402          /* If no associated stations, there's no need to do anything */
2403         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2404                 sdata->smps_mode = smps_mode;
2405                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2406                 return 0;
2407         }
2408
2409         ht_dbg(sdata,
2410                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2411                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2412
2413         mutex_lock(&sdata->local->sta_mtx);
2414         for (i = 0; i < STA_HASH_SIZE; i++) {
2415                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2416                                 lockdep_is_held(&sdata->local->sta_mtx));
2417                      sta;
2418                      sta = rcu_dereference_protected(sta->hnext,
2419                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2420                         /*
2421                          * Only stations associated to our AP and
2422                          * associated VLANs
2423                          */
2424                         if (sta->sdata->bss != &sdata->u.ap)
2425                                 continue;
2426
2427                         /* This station doesn't support MIMO - skip it */
2428                         if (sta_info_tx_streams(sta) == 1)
2429                                 continue;
2430
2431                         /*
2432                          * Don't wake up a STA just to send the action frame
2433                          * unless we are getting more restrictive.
2434                          */
2435                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2436                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2437                                                            smps_mode)) {
2438                                 ht_dbg(sdata,
2439                                        "Won't send SMPS to sleeping STA %pM\n",
2440                                        sta->sta.addr);
2441                                 continue;
2442                         }
2443
2444                         /*
2445                          * If the STA is not authorized, wait until it gets
2446                          * authorized and the action frame will be sent then.
2447                          */
2448                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2449                                 continue;
2450
2451                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2452                         ieee80211_send_smps_action(sdata, smps_mode,
2453                                                    sta->sta.addr,
2454                                                    sdata->vif.bss_conf.bssid);
2455                 }
2456         }
2457         mutex_unlock(&sdata->local->sta_mtx);
2458
2459         sdata->smps_mode = smps_mode;
2460         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2461
2462         return 0;
2463 }
2464
2465 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2466                                  enum ieee80211_smps_mode smps_mode)
2467 {
2468         const u8 *ap;
2469         enum ieee80211_smps_mode old_req;
2470         int err;
2471
2472         lockdep_assert_held(&sdata->wdev.mtx);
2473
2474         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2475                 return -EINVAL;
2476
2477         old_req = sdata->u.mgd.req_smps;
2478         sdata->u.mgd.req_smps = smps_mode;
2479
2480         if (old_req == smps_mode &&
2481             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2482                 return 0;
2483
2484         /*
2485          * If not associated, or current association is not an HT
2486          * association, there's no need to do anything, just store
2487          * the new value until we associate.
2488          */
2489         if (!sdata->u.mgd.associated ||
2490             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2491                 return 0;
2492
2493         ap = sdata->u.mgd.associated->bssid;
2494
2495         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2496                 if (sdata->u.mgd.powersave)
2497                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2498                 else
2499                         smps_mode = IEEE80211_SMPS_OFF;
2500         }
2501
2502         /* send SM PS frame to AP */
2503         err = ieee80211_send_smps_action(sdata, smps_mode,
2504                                          ap, ap);
2505         if (err)
2506                 sdata->u.mgd.req_smps = old_req;
2507
2508         return err;
2509 }
2510
2511 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2512                                     bool enabled, int timeout)
2513 {
2514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2515         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2516
2517         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2518                 return -EOPNOTSUPP;
2519
2520         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2521                 return -EOPNOTSUPP;
2522
2523         if (enabled == sdata->u.mgd.powersave &&
2524             timeout == local->dynamic_ps_forced_timeout)
2525                 return 0;
2526
2527         sdata->u.mgd.powersave = enabled;
2528         local->dynamic_ps_forced_timeout = timeout;
2529
2530         /* no change, but if automatic follow powersave */
2531         sdata_lock(sdata);
2532         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2533         sdata_unlock(sdata);
2534
2535         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2536                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2537
2538         ieee80211_recalc_ps(local, -1);
2539         ieee80211_recalc_ps_vif(sdata);
2540
2541         return 0;
2542 }
2543
2544 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2545                                          struct net_device *dev,
2546                                          s32 rssi_thold, u32 rssi_hyst)
2547 {
2548         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2549         struct ieee80211_vif *vif = &sdata->vif;
2550         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2551
2552         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2553             rssi_hyst == bss_conf->cqm_rssi_hyst)
2554                 return 0;
2555
2556         bss_conf->cqm_rssi_thold = rssi_thold;
2557         bss_conf->cqm_rssi_hyst = rssi_hyst;
2558
2559         /* tell the driver upon association, unless already associated */
2560         if (sdata->u.mgd.associated &&
2561             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2562                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2563
2564         return 0;
2565 }
2566
2567 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2568                                       struct net_device *dev,
2569                                       const u8 *addr,
2570                                       const struct cfg80211_bitrate_mask *mask)
2571 {
2572         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2573         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2574         int i, ret;
2575
2576         if (!ieee80211_sdata_running(sdata))
2577                 return -ENETDOWN;
2578
2579         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2580                 ret = drv_set_bitrate_mask(local, sdata, mask);
2581                 if (ret)
2582                         return ret;
2583         }
2584
2585         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2586                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2587                 int j;
2588
2589                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2590                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2591                        sizeof(mask->control[i].mcs));
2592
2593                 sdata->rc_has_mcs_mask[i] = false;
2594                 if (!sband)
2595                         continue;
2596
2597                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2598                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2599                                 sdata->rc_has_mcs_mask[i] = true;
2600                                 break;
2601                         }
2602         }
2603
2604         return 0;
2605 }
2606
2607 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2608                                     struct ieee80211_sub_if_data *sdata,
2609                                     struct ieee80211_channel *channel,
2610                                     unsigned int duration, u64 *cookie,
2611                                     struct sk_buff *txskb,
2612                                     enum ieee80211_roc_type type)
2613 {
2614         struct ieee80211_roc_work *roc, *tmp;
2615         bool queued = false;
2616         int ret;
2617
2618         lockdep_assert_held(&local->mtx);
2619
2620         if (local->use_chanctx && !local->ops->remain_on_channel)
2621                 return -EOPNOTSUPP;
2622
2623         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2624         if (!roc)
2625                 return -ENOMEM;
2626
2627         roc->chan = channel;
2628         roc->duration = duration;
2629         roc->req_duration = duration;
2630         roc->frame = txskb;
2631         roc->type = type;
2632         roc->mgmt_tx_cookie = (unsigned long)txskb;
2633         roc->sdata = sdata;
2634         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2635         INIT_LIST_HEAD(&roc->dependents);
2636
2637         /* if there's one pending or we're scanning, queue this one */
2638         if (!list_empty(&local->roc_list) ||
2639             local->scanning || local->radar_detect_enabled)
2640                 goto out_check_combine;
2641
2642         /* if not HW assist, just queue & schedule work */
2643         if (!local->ops->remain_on_channel) {
2644                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2645                 goto out_queue;
2646         }
2647
2648         /* otherwise actually kick it off here (for error handling) */
2649
2650         /*
2651          * If the duration is zero, then the driver
2652          * wouldn't actually do anything. Set it to
2653          * 10 for now.
2654          *
2655          * TODO: cancel the off-channel operation
2656          *       when we get the SKB's TX status and
2657          *       the wait time was zero before.
2658          */
2659         if (!duration)
2660                 duration = 10;
2661
2662         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2663         if (ret) {
2664                 kfree(roc);
2665                 return ret;
2666         }
2667
2668         roc->started = true;
2669         goto out_queue;
2670
2671  out_check_combine:
2672         list_for_each_entry(tmp, &local->roc_list, list) {
2673                 if (tmp->chan != channel || tmp->sdata != sdata)
2674                         continue;
2675
2676                 /*
2677                  * Extend this ROC if possible:
2678                  *
2679                  * If it hasn't started yet, just increase the duration
2680                  * and add the new one to the list of dependents.
2681                  * If the type of the new ROC has higher priority, modify the
2682                  * type of the previous one to match that of the new one.
2683                  */
2684                 if (!tmp->started) {
2685                         list_add_tail(&roc->list, &tmp->dependents);
2686                         tmp->duration = max(tmp->duration, roc->duration);
2687                         tmp->type = max(tmp->type, roc->type);
2688                         queued = true;
2689                         break;
2690                 }
2691
2692                 /* If it has already started, it's more difficult ... */
2693                 if (local->ops->remain_on_channel) {
2694                         unsigned long j = jiffies;
2695
2696                         /*
2697                          * In the offloaded ROC case, if it hasn't begun, add
2698                          * this new one to the dependent list to be handled
2699                          * when the master one begins. If it has begun,
2700                          * check that there's still a minimum time left and
2701                          * if so, start this one, transmitting the frame, but
2702                          * add it to the list directly after this one with
2703                          * a reduced time so we'll ask the driver to execute
2704                          * it right after finishing the previous one, in the
2705                          * hope that it'll also be executed right afterwards,
2706                          * effectively extending the old one.
2707                          * If there's no minimum time left, just add it to the
2708                          * normal list.
2709                          * TODO: the ROC type is ignored here, assuming that it
2710                          * is better to immediately use the current ROC.
2711                          */
2712                         if (!tmp->hw_begun) {
2713                                 list_add_tail(&roc->list, &tmp->dependents);
2714                                 queued = true;
2715                                 break;
2716                         }
2717
2718                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2719                                         tmp->hw_start_time +
2720                                         msecs_to_jiffies(tmp->duration))) {
2721                                 int new_dur;
2722
2723                                 ieee80211_handle_roc_started(roc);
2724
2725                                 new_dur = roc->duration -
2726                                           jiffies_to_msecs(tmp->hw_start_time +
2727                                                            msecs_to_jiffies(
2728                                                                 tmp->duration) -
2729                                                            j);
2730
2731                                 if (new_dur > 0) {
2732                                         /* add right after tmp */
2733                                         list_add(&roc->list, &tmp->list);
2734                                 } else {
2735                                         list_add_tail(&roc->list,
2736                                                       &tmp->dependents);
2737                                 }
2738                                 queued = true;
2739                         }
2740                 } else if (del_timer_sync(&tmp->work.timer)) {
2741                         unsigned long new_end;
2742
2743                         /*
2744                          * In the software ROC case, cancel the timer, if
2745                          * that fails then the finish work is already
2746                          * queued/pending and thus we queue the new ROC
2747                          * normally, if that succeeds then we can extend
2748                          * the timer duration and TX the frame (if any.)
2749                          */
2750
2751                         list_add_tail(&roc->list, &tmp->dependents);
2752                         queued = true;
2753
2754                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2755
2756                         /* ok, it was started & we canceled timer */
2757                         if (time_after(new_end, tmp->work.timer.expires))
2758                                 mod_timer(&tmp->work.timer, new_end);
2759                         else
2760                                 add_timer(&tmp->work.timer);
2761
2762                         ieee80211_handle_roc_started(roc);
2763                 }
2764                 break;
2765         }
2766
2767  out_queue:
2768         if (!queued)
2769                 list_add_tail(&roc->list, &local->roc_list);
2770
2771         /*
2772          * cookie is either the roc cookie (for normal roc)
2773          * or the SKB (for mgmt TX)
2774          */
2775         if (!txskb) {
2776                 /* local->mtx protects this */
2777                 local->roc_cookie_counter++;
2778                 roc->cookie = local->roc_cookie_counter;
2779                 /* wow, you wrapped 64 bits ... more likely a bug */
2780                 if (WARN_ON(roc->cookie == 0)) {
2781                         roc->cookie = 1;
2782                         local->roc_cookie_counter++;
2783                 }
2784                 *cookie = roc->cookie;
2785         } else {
2786                 *cookie = (unsigned long)txskb;
2787         }
2788
2789         return 0;
2790 }
2791
2792 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2793                                        struct wireless_dev *wdev,
2794                                        struct ieee80211_channel *chan,
2795                                        unsigned int duration,
2796                                        u64 *cookie)
2797 {
2798         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2799         struct ieee80211_local *local = sdata->local;
2800         int ret;
2801
2802         mutex_lock(&local->mtx);
2803         ret = ieee80211_start_roc_work(local, sdata, chan,
2804                                        duration, cookie, NULL,
2805                                        IEEE80211_ROC_TYPE_NORMAL);
2806         mutex_unlock(&local->mtx);
2807
2808         return ret;
2809 }
2810
2811 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2812                                 u64 cookie, bool mgmt_tx)
2813 {
2814         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2815         int ret;
2816
2817         mutex_lock(&local->mtx);
2818         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2819                 struct ieee80211_roc_work *dep, *tmp2;
2820
2821                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2822                         if (!mgmt_tx && dep->cookie != cookie)
2823                                 continue;
2824                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2825                                 continue;
2826                         /* found dependent item -- just remove it */
2827                         list_del(&dep->list);
2828                         mutex_unlock(&local->mtx);
2829
2830                         ieee80211_roc_notify_destroy(dep, true);
2831                         return 0;
2832                 }
2833
2834                 if (!mgmt_tx && roc->cookie != cookie)
2835                         continue;
2836                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2837                         continue;
2838
2839                 found = roc;
2840                 break;
2841         }
2842
2843         if (!found) {
2844                 mutex_unlock(&local->mtx);
2845                 return -ENOENT;
2846         }
2847
2848         /*
2849          * We found the item to cancel, so do that. Note that it
2850          * may have dependents, which we also cancel (and send
2851          * the expired signal for.) Not doing so would be quite
2852          * tricky here, but we may need to fix it later.
2853          */
2854
2855         if (local->ops->remain_on_channel) {
2856                 if (found->started) {
2857                         ret = drv_cancel_remain_on_channel(local);
2858                         if (WARN_ON_ONCE(ret)) {
2859                                 mutex_unlock(&local->mtx);
2860                                 return ret;
2861                         }
2862                 }
2863
2864                 list_del(&found->list);
2865
2866                 if (found->started)
2867                         ieee80211_start_next_roc(local);
2868                 mutex_unlock(&local->mtx);
2869
2870                 ieee80211_roc_notify_destroy(found, true);
2871         } else {
2872                 /* work may be pending so use it all the time */
2873                 found->abort = true;
2874                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2875
2876                 mutex_unlock(&local->mtx);
2877
2878                 /* work will clean up etc */
2879                 flush_delayed_work(&found->work);
2880                 WARN_ON(!found->to_be_freed);
2881                 kfree(found);
2882         }
2883
2884         return 0;
2885 }
2886
2887 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2888                                               struct wireless_dev *wdev,
2889                                               u64 cookie)
2890 {
2891         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2892         struct ieee80211_local *local = sdata->local;
2893
2894         return ieee80211_cancel_roc(local, cookie, false);
2895 }
2896
2897 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2898                                            struct net_device *dev,
2899                                            struct cfg80211_chan_def *chandef)
2900 {
2901         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2902         struct ieee80211_local *local = sdata->local;
2903         unsigned long timeout;
2904         int err;
2905
2906         if (!list_empty(&local->roc_list) || local->scanning)
2907                 return -EBUSY;
2908
2909         /* whatever, but channel contexts should not complain about that one */
2910         sdata->smps_mode = IEEE80211_SMPS_OFF;
2911         sdata->needed_rx_chains = local->rx_chains;
2912         sdata->radar_required = true;
2913
2914         mutex_lock(&local->iflist_mtx);
2915         err = ieee80211_vif_use_channel(sdata, chandef,
2916                                         IEEE80211_CHANCTX_SHARED);
2917         mutex_unlock(&local->iflist_mtx);
2918         if (err)
2919                 return err;
2920
2921         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2922         ieee80211_queue_delayed_work(&sdata->local->hw,
2923                                      &sdata->dfs_cac_timer_work, timeout);
2924
2925         return 0;
2926 }
2927
2928 static struct cfg80211_beacon_data *
2929 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2930 {
2931         struct cfg80211_beacon_data *new_beacon;
2932         u8 *pos;
2933         int len;
2934
2935         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2936               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2937               beacon->probe_resp_len;
2938
2939         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2940         if (!new_beacon)
2941                 return NULL;
2942
2943         pos = (u8 *)(new_beacon + 1);
2944         if (beacon->head_len) {
2945                 new_beacon->head_len = beacon->head_len;
2946                 new_beacon->head = pos;
2947                 memcpy(pos, beacon->head, beacon->head_len);
2948                 pos += beacon->head_len;
2949         }
2950         if (beacon->tail_len) {
2951                 new_beacon->tail_len = beacon->tail_len;
2952                 new_beacon->tail = pos;
2953                 memcpy(pos, beacon->tail, beacon->tail_len);
2954                 pos += beacon->tail_len;
2955         }
2956         if (beacon->beacon_ies_len) {
2957                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2958                 new_beacon->beacon_ies = pos;
2959                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2960                 pos += beacon->beacon_ies_len;
2961         }
2962         if (beacon->proberesp_ies_len) {
2963                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2964                 new_beacon->proberesp_ies = pos;
2965                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2966                 pos += beacon->proberesp_ies_len;
2967         }
2968         if (beacon->assocresp_ies_len) {
2969                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2970                 new_beacon->assocresp_ies = pos;
2971                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2972                 pos += beacon->assocresp_ies_len;
2973         }
2974         if (beacon->probe_resp_len) {
2975                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2976                 beacon->probe_resp = pos;
2977                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2978                 pos += beacon->probe_resp_len;
2979         }
2980
2981         return new_beacon;
2982 }
2983
2984 void ieee80211_csa_finalize_work(struct work_struct *work)
2985 {
2986         struct ieee80211_sub_if_data *sdata =
2987                 container_of(work, struct ieee80211_sub_if_data,
2988                              csa_finalize_work);
2989         struct ieee80211_local *local = sdata->local;
2990         int err, changed = 0;
2991
2992         sdata_lock(sdata);
2993         /* AP might have been stopped while waiting for the lock. */
2994         if (!sdata->vif.csa_active)
2995                 goto unlock;
2996
2997         if (!ieee80211_sdata_running(sdata))
2998                 goto unlock;
2999
3000         sdata->radar_required = sdata->csa_radar_required;
3001         err = ieee80211_vif_change_channel(sdata, &changed);
3002         if (WARN_ON(err < 0))
3003                 goto unlock;
3004
3005         if (!local->use_chanctx) {
3006                 local->_oper_chandef = sdata->csa_chandef;
3007                 ieee80211_hw_config(local, 0);
3008         }
3009
3010         ieee80211_bss_info_change_notify(sdata, changed);
3011
3012         sdata->vif.csa_active = false;
3013         switch (sdata->vif.type) {
3014         case NL80211_IFTYPE_AP:
3015                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3016                 if (err < 0)
3017                         goto unlock;
3018
3019                 changed |= err;
3020                 kfree(sdata->u.ap.next_beacon);
3021                 sdata->u.ap.next_beacon = NULL;
3022
3023                 ieee80211_bss_info_change_notify(sdata, err);
3024                 break;
3025         case NL80211_IFTYPE_ADHOC:
3026                 ieee80211_ibss_finish_csa(sdata);
3027                 break;
3028 #ifdef CONFIG_MAC80211_MESH
3029         case NL80211_IFTYPE_MESH_POINT:
3030                 err = ieee80211_mesh_finish_csa(sdata);
3031                 if (err < 0)
3032                         goto unlock;
3033                 break;
3034 #endif
3035         default:
3036                 WARN_ON(1);
3037                 goto unlock;
3038         }
3039
3040         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3041                                         IEEE80211_MAX_QUEUE_MAP,
3042                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3043
3044         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3045
3046 unlock:
3047         sdata_unlock(sdata);
3048 }
3049
3050 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3051                                     struct cfg80211_csa_settings *params)
3052 {
3053         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3054         struct ieee80211_local *local = sdata->local;
3055         struct ieee80211_chanctx_conf *chanctx_conf;
3056         struct ieee80211_chanctx *chanctx;
3057         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3058         int err, num_chanctx;
3059
3060         lockdep_assert_held(&sdata->wdev.mtx);
3061
3062         if (!list_empty(&local->roc_list) || local->scanning)
3063                 return -EBUSY;
3064
3065         if (sdata->wdev.cac_started)
3066                 return -EBUSY;
3067
3068         if (cfg80211_chandef_identical(&params->chandef,
3069                                        &sdata->vif.bss_conf.chandef))
3070                 return -EINVAL;
3071
3072         rcu_read_lock();
3073         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3074         if (!chanctx_conf) {
3075                 rcu_read_unlock();
3076                 return -EBUSY;
3077         }
3078
3079         /* don't handle for multi-VIF cases */
3080         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3081         if (chanctx->refcount > 1) {
3082                 rcu_read_unlock();
3083                 return -EBUSY;
3084         }
3085         num_chanctx = 0;
3086         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3087                 num_chanctx++;
3088         rcu_read_unlock();
3089
3090         if (num_chanctx > 1)
3091                 return -EBUSY;
3092
3093         /* don't allow another channel switch if one is already active. */
3094         if (sdata->vif.csa_active)
3095                 return -EBUSY;
3096
3097         switch (sdata->vif.type) {
3098         case NL80211_IFTYPE_AP:
3099                 sdata->csa_counter_offset_beacon =
3100                         params->counter_offset_beacon;
3101                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3102                 sdata->u.ap.next_beacon =
3103                         cfg80211_beacon_dup(&params->beacon_after);
3104                 if (!sdata->u.ap.next_beacon)
3105                         return -ENOMEM;
3106
3107                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3108                 if (err < 0) {
3109                         kfree(sdata->u.ap.next_beacon);
3110                         return err;
3111                 }
3112                 break;
3113         case NL80211_IFTYPE_ADHOC:
3114                 if (!sdata->vif.bss_conf.ibss_joined)
3115                         return -EINVAL;
3116
3117                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3118                         return -EINVAL;
3119
3120                 switch (params->chandef.width) {
3121                 case NL80211_CHAN_WIDTH_40:
3122                         if (cfg80211_get_chandef_type(&params->chandef) !=
3123                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3124                                 return -EINVAL;
3125                 case NL80211_CHAN_WIDTH_5:
3126                 case NL80211_CHAN_WIDTH_10:
3127                 case NL80211_CHAN_WIDTH_20_NOHT:
3128                 case NL80211_CHAN_WIDTH_20:
3129                         break;
3130                 default:
3131                         return -EINVAL;
3132                 }
3133
3134                 /* changes into another band are not supported */
3135                 if (sdata->u.ibss.chandef.chan->band !=
3136                     params->chandef.chan->band)
3137                         return -EINVAL;
3138
3139                 err = ieee80211_ibss_csa_beacon(sdata, params);
3140                 if (err < 0)
3141                         return err;
3142                 break;
3143 #ifdef CONFIG_MAC80211_MESH
3144         case NL80211_IFTYPE_MESH_POINT:
3145                 ifmsh = &sdata->u.mesh;
3146
3147                 if (!ifmsh->mesh_id)
3148                         return -EINVAL;
3149
3150                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3151                         return -EINVAL;
3152
3153                 /* changes into another band are not supported */
3154                 if (sdata->vif.bss_conf.chandef.chan->band !=
3155                     params->chandef.chan->band)
3156                         return -EINVAL;
3157
3158                 ifmsh->chsw_init = true;
3159                 if (!ifmsh->pre_value)
3160                         ifmsh->pre_value = 1;
3161                 else
3162                         ifmsh->pre_value++;
3163
3164                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3165                 if (err < 0) {
3166                         ifmsh->chsw_init = false;
3167                         return err;
3168                 }
3169                 break;
3170 #endif
3171         default:
3172                 return -EOPNOTSUPP;
3173         }
3174
3175         sdata->csa_radar_required = params->radar_required;
3176
3177         if (params->block_tx)
3178                 ieee80211_stop_queues_by_reason(&local->hw,
3179                                 IEEE80211_MAX_QUEUE_MAP,
3180                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3181
3182         sdata->csa_chandef = params->chandef;
3183         sdata->vif.csa_active = true;
3184
3185         ieee80211_bss_info_change_notify(sdata, err);
3186         drv_channel_switch_beacon(sdata, &params->chandef);
3187
3188         return 0;
3189 }
3190
3191 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3192                              struct cfg80211_mgmt_tx_params *params,
3193                              u64 *cookie)
3194 {
3195         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3196         struct ieee80211_local *local = sdata->local;
3197         struct sk_buff *skb;
3198         struct sta_info *sta;
3199         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3200         bool need_offchan = false;
3201         u32 flags;
3202         int ret;
3203
3204         if (params->dont_wait_for_ack)
3205                 flags = IEEE80211_TX_CTL_NO_ACK;
3206         else
3207                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3208                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3209
3210         if (params->no_cck)
3211                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3212
3213         switch (sdata->vif.type) {
3214         case NL80211_IFTYPE_ADHOC:
3215                 if (!sdata->vif.bss_conf.ibss_joined)
3216                         need_offchan = true;
3217                 /* fall through */
3218 #ifdef CONFIG_MAC80211_MESH
3219         case NL80211_IFTYPE_MESH_POINT:
3220                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3221                     !sdata->u.mesh.mesh_id_len)
3222                         need_offchan = true;
3223                 /* fall through */
3224 #endif
3225         case NL80211_IFTYPE_AP:
3226         case NL80211_IFTYPE_AP_VLAN:
3227         case NL80211_IFTYPE_P2P_GO:
3228                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3229                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3230                     !rcu_access_pointer(sdata->bss->beacon))
3231                         need_offchan = true;
3232                 if (!ieee80211_is_action(mgmt->frame_control) ||
3233                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3234                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3235                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3236                         break;
3237                 rcu_read_lock();
3238                 sta = sta_info_get(sdata, mgmt->da);
3239                 rcu_read_unlock();
3240                 if (!sta)
3241                         return -ENOLINK;
3242                 break;
3243         case NL80211_IFTYPE_STATION:
3244         case NL80211_IFTYPE_P2P_CLIENT:
3245                 if (!sdata->u.mgd.associated)
3246                         need_offchan = true;
3247                 break;
3248         case NL80211_IFTYPE_P2P_DEVICE:
3249                 need_offchan = true;
3250                 break;
3251         default:
3252                 return -EOPNOTSUPP;
3253         }
3254
3255         /* configurations requiring offchan cannot work if no channel has been
3256          * specified
3257          */
3258         if (need_offchan && !params->chan)
3259                 return -EINVAL;
3260
3261         mutex_lock(&local->mtx);
3262
3263         /* Check if the operating channel is the requested channel */
3264         if (!need_offchan) {
3265                 struct ieee80211_chanctx_conf *chanctx_conf;
3266
3267                 rcu_read_lock();
3268                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3269
3270                 if (chanctx_conf) {
3271                         need_offchan = params->chan &&
3272                                        (params->chan !=
3273                                         chanctx_conf->def.chan);
3274                 } else if (!params->chan) {
3275                         ret = -EINVAL;
3276                         rcu_read_unlock();
3277                         goto out_unlock;
3278                 } else {
3279                         need_offchan = true;
3280                 }
3281                 rcu_read_unlock();
3282         }
3283
3284         if (need_offchan && !params->offchan) {
3285                 ret = -EBUSY;
3286                 goto out_unlock;
3287         }
3288
3289         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3290         if (!skb) {
3291                 ret = -ENOMEM;
3292                 goto out_unlock;
3293         }
3294         skb_reserve(skb, local->hw.extra_tx_headroom);
3295
3296         memcpy(skb_put(skb, params->len), params->buf, params->len);
3297
3298         IEEE80211_SKB_CB(skb)->flags = flags;
3299
3300         skb->dev = sdata->dev;
3301
3302         if (!need_offchan) {
3303                 *cookie = (unsigned long) skb;
3304                 ieee80211_tx_skb(sdata, skb);
3305                 ret = 0;
3306                 goto out_unlock;
3307         }
3308
3309         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3310                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3311         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3312                 IEEE80211_SKB_CB(skb)->hw_queue =
3313                         local->hw.offchannel_tx_hw_queue;
3314
3315         /* This will handle all kinds of coalescing and immediate TX */
3316         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3317                                        params->wait, cookie, skb,
3318                                        IEEE80211_ROC_TYPE_MGMT_TX);
3319         if (ret)
3320                 kfree_skb(skb);
3321  out_unlock:
3322         mutex_unlock(&local->mtx);
3323         return ret;
3324 }
3325
3326 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3327                                          struct wireless_dev *wdev,
3328                                          u64 cookie)
3329 {
3330         struct ieee80211_local *local = wiphy_priv(wiphy);
3331
3332         return ieee80211_cancel_roc(local, cookie, true);
3333 }
3334
3335 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3336                                           struct wireless_dev *wdev,
3337                                           u16 frame_type, bool reg)
3338 {
3339         struct ieee80211_local *local = wiphy_priv(wiphy);
3340
3341         switch (frame_type) {
3342         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3343                 if (reg)
3344                         local->probe_req_reg++;
3345                 else
3346                         local->probe_req_reg--;
3347
3348                 if (!local->open_count)
3349                         break;
3350
3351                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3352                 break;
3353         default:
3354                 break;
3355         }
3356 }
3357
3358 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3359 {
3360         struct ieee80211_local *local = wiphy_priv(wiphy);
3361
3362         if (local->started)
3363                 return -EOPNOTSUPP;
3364
3365         return drv_set_antenna(local, tx_ant, rx_ant);
3366 }
3367
3368 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3369 {
3370         struct ieee80211_local *local = wiphy_priv(wiphy);
3371
3372         return drv_get_antenna(local, tx_ant, rx_ant);
3373 }
3374
3375 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3376 {
3377         struct ieee80211_local *local = wiphy_priv(wiphy);
3378
3379         return drv_set_ringparam(local, tx, rx);
3380 }
3381
3382 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3383                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3384 {
3385         struct ieee80211_local *local = wiphy_priv(wiphy);
3386
3387         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3388 }
3389
3390 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3391                                     struct net_device *dev,
3392                                     struct cfg80211_gtk_rekey_data *data)
3393 {
3394         struct ieee80211_local *local = wiphy_priv(wiphy);
3395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3396
3397         if (!local->ops->set_rekey_data)
3398                 return -EOPNOTSUPP;
3399
3400         drv_set_rekey_data(local, sdata, data);
3401
3402         return 0;
3403 }
3404
3405 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3406 {
3407         u8 *pos = (void *)skb_put(skb, 7);
3408
3409         *pos++ = WLAN_EID_EXT_CAPABILITY;
3410         *pos++ = 5; /* len */
3411         *pos++ = 0x0;
3412         *pos++ = 0x0;
3413         *pos++ = 0x0;
3414         *pos++ = 0x0;
3415         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3416 }
3417
3418 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3419 {
3420         struct ieee80211_local *local = sdata->local;
3421         u16 capab;
3422
3423         capab = 0;
3424         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3425                 return capab;
3426
3427         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3428                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3429         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3430                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3431
3432         return capab;
3433 }
3434
3435 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3436                                        u8 *peer, u8 *bssid)
3437 {
3438         struct ieee80211_tdls_lnkie *lnkid;
3439
3440         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3441
3442         lnkid->ie_type = WLAN_EID_LINK_ID;
3443         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3444
3445         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3446         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3447         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3448 }
3449
3450 static int
3451 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3452                                u8 *peer, u8 action_code, u8 dialog_token,
3453                                u16 status_code, struct sk_buff *skb)
3454 {
3455         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3456         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3457         struct ieee80211_tdls_data *tf;
3458
3459         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3460
3461         memcpy(tf->da, peer, ETH_ALEN);
3462         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3463         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3464         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3465
3466         switch (action_code) {
3467         case WLAN_TDLS_SETUP_REQUEST:
3468                 tf->category = WLAN_CATEGORY_TDLS;
3469                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3470
3471                 skb_put(skb, sizeof(tf->u.setup_req));
3472                 tf->u.setup_req.dialog_token = dialog_token;
3473                 tf->u.setup_req.capability =
3474                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3475
3476                 ieee80211_add_srates_ie(sdata, skb, false, band);
3477                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3478                 ieee80211_tdls_add_ext_capab(skb);
3479                 break;
3480         case WLAN_TDLS_SETUP_RESPONSE:
3481                 tf->category = WLAN_CATEGORY_TDLS;
3482                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3483
3484                 skb_put(skb, sizeof(tf->u.setup_resp));
3485                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3486                 tf->u.setup_resp.dialog_token = dialog_token;
3487                 tf->u.setup_resp.capability =
3488                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3489
3490                 ieee80211_add_srates_ie(sdata, skb, false, band);
3491                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3492                 ieee80211_tdls_add_ext_capab(skb);
3493                 break;
3494         case WLAN_TDLS_SETUP_CONFIRM:
3495                 tf->category = WLAN_CATEGORY_TDLS;
3496                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3497
3498                 skb_put(skb, sizeof(tf->u.setup_cfm));
3499                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3500                 tf->u.setup_cfm.dialog_token = dialog_token;
3501                 break;
3502         case WLAN_TDLS_TEARDOWN:
3503                 tf->category = WLAN_CATEGORY_TDLS;
3504                 tf->action_code = WLAN_TDLS_TEARDOWN;
3505
3506                 skb_put(skb, sizeof(tf->u.teardown));
3507                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3508                 break;
3509         case WLAN_TDLS_DISCOVERY_REQUEST:
3510                 tf->category = WLAN_CATEGORY_TDLS;
3511                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3512
3513                 skb_put(skb, sizeof(tf->u.discover_req));
3514                 tf->u.discover_req.dialog_token = dialog_token;
3515                 break;
3516         default:
3517                 return -EINVAL;
3518         }
3519
3520         return 0;
3521 }
3522
3523 static int
3524 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3525                            u8 *peer, u8 action_code, u8 dialog_token,
3526                            u16 status_code, struct sk_buff *skb)
3527 {
3528         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3529         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3530         struct ieee80211_mgmt *mgmt;
3531
3532         mgmt = (void *)skb_put(skb, 24);
3533         memset(mgmt, 0, 24);
3534         memcpy(mgmt->da, peer, ETH_ALEN);
3535         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3536         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3537
3538         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3539                                           IEEE80211_STYPE_ACTION);
3540
3541         switch (action_code) {
3542         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3543                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3544                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3545                 mgmt->u.action.u.tdls_discover_resp.action_code =
3546                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3547                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3548                         dialog_token;
3549                 mgmt->u.action.u.tdls_discover_resp.capability =
3550                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3551
3552                 ieee80211_add_srates_ie(sdata, skb, false, band);
3553                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3554                 ieee80211_tdls_add_ext_capab(skb);
3555                 break;
3556         default:
3557                 return -EINVAL;
3558         }
3559
3560         return 0;
3561 }
3562
3563 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3564                                u8 *peer, u8 action_code, u8 dialog_token,
3565                                u16 status_code, const u8 *extra_ies,
3566                                size_t extra_ies_len)
3567 {
3568         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3569         struct ieee80211_local *local = sdata->local;
3570         struct sk_buff *skb = NULL;
3571         bool send_direct;
3572         int ret;
3573
3574         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3575                 return -ENOTSUPP;
3576
3577         /* make sure we are in managed mode, and associated */
3578         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3579             !sdata->u.mgd.associated)
3580                 return -EINVAL;
3581
3582         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3583                  action_code, peer);
3584
3585         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3586                             max(sizeof(struct ieee80211_mgmt),
3587                                 sizeof(struct ieee80211_tdls_data)) +
3588                             50 + /* supported rates */
3589                             7 + /* ext capab */
3590                             extra_ies_len +
3591                             sizeof(struct ieee80211_tdls_lnkie));
3592         if (!skb)
3593                 return -ENOMEM;
3594
3595         skb_reserve(skb, local->hw.extra_tx_headroom);
3596
3597         switch (action_code) {
3598         case WLAN_TDLS_SETUP_REQUEST:
3599         case WLAN_TDLS_SETUP_RESPONSE:
3600         case WLAN_TDLS_SETUP_CONFIRM:
3601         case WLAN_TDLS_TEARDOWN:
3602         case WLAN_TDLS_DISCOVERY_REQUEST:
3603                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3604                                                      action_code, dialog_token,
3605                                                      status_code, skb);
3606                 send_direct = false;
3607                 break;
3608         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3609                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3610                                                  dialog_token, status_code,
3611                                                  skb);
3612                 send_direct = true;
3613                 break;
3614         default:
3615                 ret = -ENOTSUPP;
3616                 break;
3617         }
3618
3619         if (ret < 0)
3620                 goto fail;
3621
3622         if (extra_ies_len)
3623                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3624
3625         /* the TDLS link IE is always added last */
3626         switch (action_code) {
3627         case WLAN_TDLS_SETUP_REQUEST:
3628         case WLAN_TDLS_SETUP_CONFIRM:
3629         case WLAN_TDLS_TEARDOWN:
3630         case WLAN_TDLS_DISCOVERY_REQUEST:
3631                 /* we are the initiator */
3632                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3633                                            sdata->u.mgd.bssid);
3634                 break;
3635         case WLAN_TDLS_SETUP_RESPONSE:
3636         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3637                 /* we are the responder */
3638                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3639                                            sdata->u.mgd.bssid);
3640                 break;
3641         default:
3642                 ret = -ENOTSUPP;
3643                 goto fail;
3644         }
3645
3646         if (send_direct) {
3647                 ieee80211_tx_skb(sdata, skb);
3648                 return 0;
3649         }
3650
3651         /*
3652          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3653          * we should default to AC_VI.
3654          */
3655         switch (action_code) {
3656         case WLAN_TDLS_SETUP_REQUEST:
3657         case WLAN_TDLS_SETUP_RESPONSE:
3658                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3659                 skb->priority = 2;
3660                 break;
3661         default:
3662                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3663                 skb->priority = 5;
3664                 break;
3665         }
3666
3667         /* disable bottom halves when entering the Tx path */
3668         local_bh_disable();
3669         ret = ieee80211_subif_start_xmit(skb, dev);
3670         local_bh_enable();
3671
3672         return ret;
3673
3674 fail:
3675         dev_kfree_skb(skb);
3676         return ret;
3677 }
3678
3679 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3680                                u8 *peer, enum nl80211_tdls_operation oper)
3681 {
3682         struct sta_info *sta;
3683         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3684
3685         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3686                 return -ENOTSUPP;
3687
3688         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3689                 return -EINVAL;
3690
3691         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3692
3693         switch (oper) {
3694         case NL80211_TDLS_ENABLE_LINK:
3695                 rcu_read_lock();
3696                 sta = sta_info_get(sdata, peer);
3697                 if (!sta) {
3698                         rcu_read_unlock();
3699                         return -ENOLINK;
3700                 }
3701
3702                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3703                 rcu_read_unlock();
3704                 break;
3705         case NL80211_TDLS_DISABLE_LINK:
3706                 return sta_info_destroy_addr(sdata, peer);
3707         case NL80211_TDLS_TEARDOWN:
3708         case NL80211_TDLS_SETUP:
3709         case NL80211_TDLS_DISCOVERY_REQ:
3710                 /* We don't support in-driver setup/teardown/discovery */
3711                 return -ENOTSUPP;
3712         default:
3713                 return -ENOTSUPP;
3714         }
3715
3716         return 0;
3717 }
3718
3719 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3720                                   const u8 *peer, u64 *cookie)
3721 {
3722         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3723         struct ieee80211_local *local = sdata->local;
3724         struct ieee80211_qos_hdr *nullfunc;
3725         struct sk_buff *skb;
3726         int size = sizeof(*nullfunc);
3727         __le16 fc;
3728         bool qos;
3729         struct ieee80211_tx_info *info;
3730         struct sta_info *sta;
3731         struct ieee80211_chanctx_conf *chanctx_conf;
3732         enum ieee80211_band band;
3733
3734         rcu_read_lock();
3735         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3736         if (WARN_ON(!chanctx_conf)) {
3737                 rcu_read_unlock();
3738                 return -EINVAL;
3739         }
3740         band = chanctx_conf->def.chan->band;
3741         sta = sta_info_get_bss(sdata, peer);
3742         if (sta) {
3743                 qos = test_sta_flag(sta, WLAN_STA_WME);
3744         } else {
3745                 rcu_read_unlock();
3746                 return -ENOLINK;
3747         }
3748
3749         if (qos) {
3750                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3751                                  IEEE80211_STYPE_QOS_NULLFUNC |
3752                                  IEEE80211_FCTL_FROMDS);
3753         } else {
3754                 size -= 2;
3755                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3756                                  IEEE80211_STYPE_NULLFUNC |
3757                                  IEEE80211_FCTL_FROMDS);
3758         }
3759
3760         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3761         if (!skb) {
3762                 rcu_read_unlock();
3763                 return -ENOMEM;
3764         }
3765
3766         skb->dev = dev;
3767
3768         skb_reserve(skb, local->hw.extra_tx_headroom);
3769
3770         nullfunc = (void *) skb_put(skb, size);
3771         nullfunc->frame_control = fc;
3772         nullfunc->duration_id = 0;
3773         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3774         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3775         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3776         nullfunc->seq_ctrl = 0;
3777
3778         info = IEEE80211_SKB_CB(skb);
3779
3780         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3781                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3782
3783         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3784         skb->priority = 7;
3785         if (qos)
3786                 nullfunc->qos_ctrl = cpu_to_le16(7);
3787
3788         local_bh_disable();
3789         ieee80211_xmit(sdata, skb, band);
3790         local_bh_enable();
3791         rcu_read_unlock();
3792
3793         *cookie = (unsigned long) skb;
3794         return 0;
3795 }
3796
3797 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3798                                      struct wireless_dev *wdev,
3799                                      struct cfg80211_chan_def *chandef)
3800 {
3801         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3802         struct ieee80211_local *local = wiphy_priv(wiphy);
3803         struct ieee80211_chanctx_conf *chanctx_conf;
3804         int ret = -ENODATA;
3805
3806         rcu_read_lock();
3807         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3808         if (chanctx_conf) {
3809                 *chandef = chanctx_conf->def;
3810                 ret = 0;
3811         } else if (local->open_count > 0 &&
3812                    local->open_count == local->monitors &&
3813                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3814                 if (local->use_chanctx)
3815                         *chandef = local->monitor_chandef;
3816                 else
3817                         *chandef = local->_oper_chandef;
3818                 ret = 0;
3819         }
3820         rcu_read_unlock();
3821
3822         return ret;
3823 }
3824
3825 #ifdef CONFIG_PM
3826 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3827 {
3828         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3829 }
3830 #endif
3831
3832 struct cfg80211_ops mac80211_config_ops = {
3833         .add_virtual_intf = ieee80211_add_iface,
3834         .del_virtual_intf = ieee80211_del_iface,
3835         .change_virtual_intf = ieee80211_change_iface,
3836         .start_p2p_device = ieee80211_start_p2p_device,
3837         .stop_p2p_device = ieee80211_stop_p2p_device,
3838         .add_key = ieee80211_add_key,
3839         .del_key = ieee80211_del_key,
3840         .get_key = ieee80211_get_key,
3841         .set_default_key = ieee80211_config_default_key,
3842         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3843         .start_ap = ieee80211_start_ap,
3844         .change_beacon = ieee80211_change_beacon,
3845         .stop_ap = ieee80211_stop_ap,
3846         .add_station = ieee80211_add_station,
3847         .del_station = ieee80211_del_station,
3848         .change_station = ieee80211_change_station,
3849         .get_station = ieee80211_get_station,
3850         .dump_station = ieee80211_dump_station,
3851         .dump_survey = ieee80211_dump_survey,
3852 #ifdef CONFIG_MAC80211_MESH
3853         .add_mpath = ieee80211_add_mpath,
3854         .del_mpath = ieee80211_del_mpath,
3855         .change_mpath = ieee80211_change_mpath,
3856         .get_mpath = ieee80211_get_mpath,
3857         .dump_mpath = ieee80211_dump_mpath,
3858         .update_mesh_config = ieee80211_update_mesh_config,
3859         .get_mesh_config = ieee80211_get_mesh_config,
3860         .join_mesh = ieee80211_join_mesh,
3861         .leave_mesh = ieee80211_leave_mesh,
3862 #endif
3863         .change_bss = ieee80211_change_bss,
3864         .set_txq_params = ieee80211_set_txq_params,
3865         .set_monitor_channel = ieee80211_set_monitor_channel,
3866         .suspend = ieee80211_suspend,
3867         .resume = ieee80211_resume,
3868         .scan = ieee80211_scan,
3869         .sched_scan_start = ieee80211_sched_scan_start,
3870         .sched_scan_stop = ieee80211_sched_scan_stop,
3871         .auth = ieee80211_auth,
3872         .assoc = ieee80211_assoc,
3873         .deauth = ieee80211_deauth,
3874         .disassoc = ieee80211_disassoc,
3875         .join_ibss = ieee80211_join_ibss,
3876         .leave_ibss = ieee80211_leave_ibss,
3877         .set_mcast_rate = ieee80211_set_mcast_rate,
3878         .set_wiphy_params = ieee80211_set_wiphy_params,
3879         .set_tx_power = ieee80211_set_tx_power,
3880         .get_tx_power = ieee80211_get_tx_power,
3881         .set_wds_peer = ieee80211_set_wds_peer,
3882         .rfkill_poll = ieee80211_rfkill_poll,
3883         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3884         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3885         .set_power_mgmt = ieee80211_set_power_mgmt,
3886         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3887         .remain_on_channel = ieee80211_remain_on_channel,
3888         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3889         .mgmt_tx = ieee80211_mgmt_tx,
3890         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3891         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3892         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3893         .set_antenna = ieee80211_set_antenna,
3894         .get_antenna = ieee80211_get_antenna,
3895         .set_ringparam = ieee80211_set_ringparam,
3896         .get_ringparam = ieee80211_get_ringparam,
3897         .set_rekey_data = ieee80211_set_rekey_data,
3898         .tdls_oper = ieee80211_tdls_oper,
3899         .tdls_mgmt = ieee80211_tdls_mgmt,
3900         .probe_client = ieee80211_probe_client,
3901         .set_noack_map = ieee80211_set_noack_map,
3902 #ifdef CONFIG_PM
3903         .set_wakeup = ieee80211_set_wakeup,
3904 #endif
3905         .get_et_sset_count = ieee80211_get_et_sset_count,
3906         .get_et_stats = ieee80211_get_et_stats,
3907         .get_et_strings = ieee80211_get_et_strings,
3908         .get_channel = ieee80211_cfg_get_channel,
3909         .start_radar_detection = ieee80211_start_radar_detection,
3910         .channel_switch = ieee80211_channel_switch,
3911 };