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 sta_info *sta = NULL;
 137         struct ieee80211_key *key;
 138         int err;
 139
 140         if (!ieee80211_sdata_running(sdata))
 141                 return -ENETDOWN;
 142
 143         /* reject WEP and TKIP keys if WEP failed to initialize */
 144         switch (params->cipher) {
 145         case WLAN_CIPHER_SUITE_WEP40:
 146         case WLAN_CIPHER_SUITE_TKIP:
 147         case WLAN_CIPHER_SUITE_WEP104:
 148                 if (IS_ERR(sdata->local->wep_tx_tfm))
 149                         return -EINVAL;
 150                 break;
 151         default:
 152                 break;
 153         }
 154
 155         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 156                                   params->key, params->seq_len, params->seq);
 157         if (IS_ERR(key))
 158                 return PTR_ERR(key);
 159
 160         if (pairwise)
 161                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 162
 163         mutex_lock(&sdata->local->sta_mtx);
 164
 165         if (mac_addr) {
 166                 if (ieee80211_vif_is_mesh(&sdata->vif))
 167                         sta = sta_info_get(sdata, mac_addr);
 168                 else
 169                         sta = sta_info_get_bss(sdata, mac_addr);
 170                 /*
 171                  * The ASSOC test makes sure the driver is ready to
 172                  * receive the key. When wpa_supplicant has roamed
 173                  * using FT, it attempts to set the key before
 174                  * association has completed, this rejects that attempt
 175                  * so it will set the key again after assocation.
 176                  *
 177                  * TODO: accept the key if we have a station entry and
 178                  *       add it to the device after the station.
 179                  */
 180                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 181                         ieee80211_key_free_unused(key);
 182                         err = -ENOENT;
 183                         goto out_unlock;
 184                 }
 185         }
 186
 187         switch (sdata->vif.type) {
 188         case NL80211_IFTYPE_STATION:
 189                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 190                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 191                 break;
 192         case NL80211_IFTYPE_AP:
 193         case NL80211_IFTYPE_AP_VLAN:
 194                 /* Keys without a station are used for TX only */
 195                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 196                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 197                 break;
 198         case NL80211_IFTYPE_ADHOC:
 199                 /* no MFP (yet) */
 200                 break;
 201         case NL80211_IFTYPE_MESH_POINT:
 202 #ifdef CONFIG_MAC80211_MESH
 203                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206 #endif
 207         case NL80211_IFTYPE_WDS:
 208         case NL80211_IFTYPE_MONITOR:
 209         case NL80211_IFTYPE_P2P_DEVICE:
 210         case NL80211_IFTYPE_UNSPECIFIED:
 211         case NUM_NL80211_IFTYPES:
 212         case NL80211_IFTYPE_P2P_CLIENT:
 213         case NL80211_IFTYPE_P2P_GO:
 214                 /* shouldn't happen */
 215                 WARN_ON_ONCE(1);
 216                 break;
 217         }
 218
 219         err = ieee80211_key_link(key, sdata, sta);
 220
 221  out_unlock:
 222         mutex_unlock(&sdata->local->sta_mtx);
 223
 224         return err;
 225 }
 226
 227 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 228                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 229 {
 230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 231         struct ieee80211_local *local = sdata->local;
 232         struct sta_info *sta;
 233         struct ieee80211_key *key = NULL;
 234         int ret;
 235
 236         mutex_lock(&local->sta_mtx);
 237         mutex_lock(&local->key_mtx);
 238
 239         if (mac_addr) {
 240                 ret = -ENOENT;
 241
 242                 sta = sta_info_get_bss(sdata, mac_addr);
 243                 if (!sta)
 244                         goto out_unlock;
 245
 246                 if (pairwise)
 247                         key = key_mtx_dereference(local, sta->ptk);
 248                 else
 249                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 250         } else
 251                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 252
 253         if (!key) {
 254                 ret = -ENOENT;
 255                 goto out_unlock;
 256         }
 257
 258         ieee80211_key_free(key, true);
 259
 260         ret = 0;
 261  out_unlock:
 262         mutex_unlock(&local->key_mtx);
 263         mutex_unlock(&local->sta_mtx);
 264
 265         return ret;
 266 }
 267
 268 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 269                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 270                              void *cookie,
 271                              void (*callback)(void *cookie,
 272                                               struct key_params *params))
 273 {
 274         struct ieee80211_sub_if_data *sdata;
 275         struct sta_info *sta = NULL;
 276         u8 seq[6] = {0};
 277         struct key_params params;
 278         struct ieee80211_key *key = NULL;
 279         u64 pn64;
 280         u32 iv32;
 281         u16 iv16;
 282         int err = -ENOENT;
 283
 284         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 285
 286         rcu_read_lock();
 287
 288         if (mac_addr) {
 289                 sta = sta_info_get_bss(sdata, mac_addr);
 290                 if (!sta)
 291                         goto out;
 292
 293                 if (pairwise)
 294                         key = rcu_dereference(sta->ptk);
 295                 else if (key_idx < NUM_DEFAULT_KEYS)
 296                         key = rcu_dereference(sta->gtk[key_idx]);
 297         } else
 298                 key = rcu_dereference(sdata->keys[key_idx]);
 299
 300         if (!key)
 301                 goto out;
 302
 303         memset(&params, 0, sizeof(params));
 304
 305         params.cipher = key->conf.cipher;
 306
 307         switch (key->conf.cipher) {
 308         case WLAN_CIPHER_SUITE_TKIP:
 309                 iv32 = key->u.tkip.tx.iv32;
 310                 iv16 = key->u.tkip.tx.iv16;
 311
 312                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 313                         drv_get_tkip_seq(sdata->local,
 314                                          key->conf.hw_key_idx,
 315                                          &iv32, &iv16);
 316
 317                 seq[0] = iv16 & 0xff;
 318                 seq[1] = (iv16 >> 8) & 0xff;
 319                 seq[2] = iv32 & 0xff;
 320                 seq[3] = (iv32 >> 8) & 0xff;
 321                 seq[4] = (iv32 >> 16) & 0xff;
 322                 seq[5] = (iv32 >> 24) & 0xff;
 323                 params.seq = seq;
 324                 params.seq_len = 6;
 325                 break;
 326         case WLAN_CIPHER_SUITE_CCMP:
 327                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 328                 seq[0] = pn64;
 329                 seq[1] = pn64 >> 8;
 330                 seq[2] = pn64 >> 16;
 331                 seq[3] = pn64 >> 24;
 332                 seq[4] = pn64 >> 32;
 333                 seq[5] = pn64 >> 40;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         case WLAN_CIPHER_SUITE_AES_CMAC:
 338                 pn64 = atomic64_read(&key->u.aes_cmac.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         }
 349
 350         params.key = key->conf.key;
 351         params.key_len = key->conf.keylen;
 352
 353         callback(cookie, &params);
 354         err = 0;
 355
 356  out:
 357         rcu_read_unlock();
 358         return err;
 359 }
 360
 361 static int ieee80211_config_default_key(struct wiphy *wiphy,
 362                                         struct net_device *dev,
 363                                         u8 key_idx, bool uni,
 364                                         bool multi)
 365 {
 366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 367
 368         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 369
 370         return 0;
 371 }
 372
 373 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 374                                              struct net_device *dev,
 375                                              u8 key_idx)
 376 {
 377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 378
 379         ieee80211_set_default_mgmt_key(sdata, key_idx);
 380
 381         return 0;
 382 }
 383
 384 void sta_set_rate_info_tx(struct sta_info *sta,
 385                           const struct ieee80211_tx_rate *rate,
 386                           struct rate_info *rinfo)
 387 {
 388         rinfo->flags = 0;
 389         if (rate->flags & IEEE80211_TX_RC_MCS) {
 390                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 391                 rinfo->mcs = rate->idx;
 392         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 393                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 394                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 395                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 396         } else {
 397                 struct ieee80211_supported_band *sband;
 398                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 399                 u16 brate;
 400
 401                 sband = sta->local->hw.wiphy->bands[
 402                                 ieee80211_get_sdata_band(sta->sdata)];
 403                 brate = sband->bitrates[rate->idx].bitrate;
 404                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 405         }
 406         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 407                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 408         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 409                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 410         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 411                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 412         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 413                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 414 }
 415
 416 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 417 {
 418         rinfo->flags = 0;
 419
 420         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 421                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 422                 rinfo->mcs = sta->last_rx_rate_idx;
 423         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 424                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 425                 rinfo->nss = sta->last_rx_rate_vht_nss;
 426                 rinfo->mcs = sta->last_rx_rate_idx;
 427         } else {
 428                 struct ieee80211_supported_band *sband;
 429                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 430                 u16 brate;
 431
 432                 sband = sta->local->hw.wiphy->bands[
 433                                 ieee80211_get_sdata_band(sta->sdata)];
 434                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 435                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 436         }
 437
 438         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 439                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 440         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 441                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 442         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 443                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 444         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 445                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 446         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 447                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 448 }
 449
 450 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 451 {
 452         struct ieee80211_sub_if_data *sdata = sta->sdata;
 453         struct ieee80211_local *local = sdata->local;
 454         struct timespec uptime;
 455         u64 packets = 0;
 456         int i, ac;
 457
 458         sinfo->generation = sdata->local->sta_generation;
 459
 460         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 461                         STATION_INFO_RX_BYTES64 |
 462                         STATION_INFO_TX_BYTES64 |
 463                         STATION_INFO_RX_PACKETS |
 464                         STATION_INFO_TX_PACKETS |
 465                         STATION_INFO_TX_RETRIES |
 466                         STATION_INFO_TX_FAILED |
 467                         STATION_INFO_TX_BITRATE |
 468                         STATION_INFO_RX_BITRATE |
 469                         STATION_INFO_RX_DROP_MISC |
 470                         STATION_INFO_BSS_PARAM |
 471                         STATION_INFO_CONNECTED_TIME |
 472                         STATION_INFO_STA_FLAGS |
 473                         STATION_INFO_BEACON_LOSS_COUNT;
 474
 475         do_posix_clock_monotonic_gettime(&uptime);
 476         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 477
 478         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 479         sinfo->tx_bytes = 0;
 480         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 481                 sinfo->tx_bytes += sta->tx_bytes[ac];
 482                 packets += sta->tx_packets[ac];
 483         }
 484         sinfo->tx_packets = packets;
 485         sinfo->rx_bytes = sta->rx_bytes;
 486         sinfo->rx_packets = sta->rx_packets;
 487         sinfo->tx_retries = sta->tx_retry_count;
 488         sinfo->tx_failed = sta->tx_retry_failed;
 489         sinfo->rx_dropped_misc = sta->rx_dropped;
 490         sinfo->beacon_loss_count = sta->beacon_loss_count;
 491
 492         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 493             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 494                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 495                 if (!local->ops->get_rssi ||
 496                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 497                         sinfo->signal = (s8)sta->last_signal;
 498                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 499         }
 500         if (sta->chains) {
 501                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 502                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 503
 504                 sinfo->chains = sta->chains;
 505                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 506                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 507                         sinfo->chain_signal_avg[i] =
 508                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 509                 }
 510         }
 511
 512         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 513         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 514
 515         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 516 #ifdef CONFIG_MAC80211_MESH
 517                 sinfo->filled |= STATION_INFO_LLID |
 518                                  STATION_INFO_PLID |
 519                                  STATION_INFO_PLINK_STATE |
 520                                  STATION_INFO_LOCAL_PM |
 521                                  STATION_INFO_PEER_PM |
 522                                  STATION_INFO_NONPEER_PM;
 523
 524                 sinfo->llid = le16_to_cpu(sta->llid);
 525                 sinfo->plid = le16_to_cpu(sta->plid);
 526                 sinfo->plink_state = sta->plink_state;
 527                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 528                         sinfo->filled |= STATION_INFO_T_OFFSET;
 529                         sinfo->t_offset = sta->t_offset;
 530                 }
 531                 sinfo->local_pm = sta->local_pm;
 532                 sinfo->peer_pm = sta->peer_pm;
 533                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 534 #endif
 535         }
 536
 537         sinfo->bss_param.flags = 0;
 538         if (sdata->vif.bss_conf.use_cts_prot)
 539                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 540         if (sdata->vif.bss_conf.use_short_preamble)
 541                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 542         if (sdata->vif.bss_conf.use_short_slot)
 543                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 544         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 545         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 546
 547         sinfo->sta_flags.set = 0;
 548         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 549                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 550                                 BIT(NL80211_STA_FLAG_WME) |
 551                                 BIT(NL80211_STA_FLAG_MFP) |
 552                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 553                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 554                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 555         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 556                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 557         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 558                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 559         if (test_sta_flag(sta, WLAN_STA_WME))
 560                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 561         if (test_sta_flag(sta, WLAN_STA_MFP))
 562                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 563         if (test_sta_flag(sta, WLAN_STA_AUTH))
 564                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 565         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 566                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 567         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 568                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 569 }
 570
 571 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 572         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 573         "rx_duplicates", "rx_fragments", "rx_dropped",
 574         "tx_packets", "tx_bytes", "tx_fragments",
 575         "tx_filtered", "tx_retry_failed", "tx_retries",
 576         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 577         "channel", "noise", "ch_time", "ch_time_busy",
 578         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 579 };
 580 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 581
 582 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 583                                        struct net_device *dev,
 584                                        int sset)
 585 {
 586         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 587         int rv = 0;
 588
 589         if (sset == ETH_SS_STATS)
 590                 rv += STA_STATS_LEN;
 591
 592         rv += drv_get_et_sset_count(sdata, sset);
 593
 594         if (rv == 0)
 595                 return -EOPNOTSUPP;
 596         return rv;
 597 }
 598
 599 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 600                                    struct net_device *dev,
 601                                    struct ethtool_stats *stats,
 602                                    u64 *data)
 603 {
 604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         struct ieee80211_chanctx_conf *chanctx_conf;
 606         struct ieee80211_channel *channel;
 607         struct sta_info *sta;
 608         struct ieee80211_local *local = sdata->local;
 609         struct station_info sinfo;
 610         struct survey_info survey;
 611         int i, q;
 612 #define STA_STATS_SURVEY_LEN 7
 613
 614         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 615
 616 #define ADD_STA_STATS(sta)                              \
 617         do {                                            \
 618                 data[i++] += sta->rx_packets;           \
 619                 data[i++] += sta->rx_bytes;             \
 620                 data[i++] += sta->wep_weak_iv_count;    \
 621                 data[i++] += sta->num_duplicates;       \
 622                 data[i++] += sta->rx_fragments;         \
 623                 data[i++] += sta->rx_dropped;           \
 624                                                         \
 625                 data[i++] += sinfo.tx_packets;          \
 626                 data[i++] += sinfo.tx_bytes;            \
 627                 data[i++] += sta->tx_fragments;         \
 628                 data[i++] += sta->tx_filtered_count;    \
 629                 data[i++] += sta->tx_retry_failed;      \
 630                 data[i++] += sta->tx_retry_count;       \
 631                 data[i++] += sta->beacon_loss_count;    \
 632         } while (0)
 633
 634         /* For Managed stations, find the single station based on BSSID
 635          * and use that.  For interface types, iterate through all available
 636          * stations and add stats for any station that is assigned to this
 637          * network device.
 638          */
 639
 640         mutex_lock(&local->sta_mtx);
 641
 642         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 643                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 644
 645                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 646                         goto do_survey;
 647
 648                 sinfo.filled = 0;
 649                 sta_set_sinfo(sta, &sinfo);
 650
 651                 i = 0;
 652                 ADD_STA_STATS(sta);
 653
 654                 data[i++] = sta->sta_state;
 655
 656
 657                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 658                         data[i] = 100000 *
 659                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 660                 i++;
 661                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 662                         data[i] = 100000 *
 663                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 664                 i++;
 665
 666                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 667                         data[i] = (u8)sinfo.signal_avg;
 668                 i++;
 669         } else {
 670                 list_for_each_entry(sta, &local->sta_list, list) {
 671                         /* Make sure this station belongs to the proper dev */
 672                         if (sta->sdata->dev != dev)
 673                                 continue;
 674
 675                         sinfo.filled = 0;
 676                         sta_set_sinfo(sta, &sinfo);
 677                         i = 0;
 678                         ADD_STA_STATS(sta);
 679                 }
 680         }
 681
 682 do_survey:
 683         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 684         /* Get survey stats for current channel */
 685         survey.filled = 0;
 686
 687         rcu_read_lock();
 688         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 689         if (chanctx_conf)
 690                 channel = chanctx_conf->def.chan;
 691         else
 692                 channel = NULL;
 693         rcu_read_unlock();
 694
 695         if (channel) {
 696                 q = 0;
 697                 do {
 698                         survey.filled = 0;
 699                         if (drv_get_survey(local, q, &survey) != 0) {
 700                                 survey.filled = 0;
 701                                 break;
 702                         }
 703                         q++;
 704                 } while (channel != survey.channel);
 705         }
 706
 707         if (survey.filled)
 708                 data[i++] = survey.channel->center_freq;
 709         else
 710                 data[i++] = 0;
 711         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 712                 data[i++] = (u8)survey.noise;
 713         else
 714                 data[i++] = -1LL;
 715         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 716                 data[i++] = survey.channel_time;
 717         else
 718                 data[i++] = -1LL;
 719         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 720                 data[i++] = survey.channel_time_busy;
 721         else
 722                 data[i++] = -1LL;
 723         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 724                 data[i++] = survey.channel_time_ext_busy;
 725         else
 726                 data[i++] = -1LL;
 727         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 728                 data[i++] = survey.channel_time_rx;
 729         else
 730                 data[i++] = -1LL;
 731         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 732                 data[i++] = survey.channel_time_tx;
 733         else
 734                 data[i++] = -1LL;
 735
 736         mutex_unlock(&local->sta_mtx);
 737
 738         if (WARN_ON(i != STA_STATS_LEN))
 739                 return;
 740
 741         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 742 }
 743
 744 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 745                                      struct net_device *dev,
 746                                      u32 sset, u8 *data)
 747 {
 748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 749         int sz_sta_stats = 0;
 750
 751         if (sset == ETH_SS_STATS) {
 752                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 753                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 754         }
 755         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 756 }
 757
 758 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 759                                  int idx, u8 *mac, struct station_info *sinfo)
 760 {
 761         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 762         struct ieee80211_local *local = sdata->local;
 763         struct sta_info *sta;
 764         int ret = -ENOENT;
 765
 766         mutex_lock(&local->sta_mtx);
 767
 768         sta = sta_info_get_by_idx(sdata, idx);
 769         if (sta) {
 770                 ret = 0;
 771                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 772                 sta_set_sinfo(sta, sinfo);
 773         }
 774
 775         mutex_unlock(&local->sta_mtx);
 776
 777         return ret;
 778 }
 779
 780 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 781                                  int idx, struct survey_info *survey)
 782 {
 783         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 784
 785         return drv_get_survey(local, idx, survey);
 786 }
 787
 788 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 789                                  u8 *mac, struct station_info *sinfo)
 790 {
 791         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 792         struct ieee80211_local *local = sdata->local;
 793         struct sta_info *sta;
 794         int ret = -ENOENT;
 795
 796         mutex_lock(&local->sta_mtx);
 797
 798         sta = sta_info_get_bss(sdata, mac);
 799         if (sta) {
 800                 ret = 0;
 801                 sta_set_sinfo(sta, sinfo);
 802         }
 803
 804         mutex_unlock(&local->sta_mtx);
 805
 806         return ret;
 807 }
 808
 809 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 810                                          struct cfg80211_chan_def *chandef)
 811 {
 812         struct ieee80211_local *local = wiphy_priv(wiphy);
 813         struct ieee80211_sub_if_data *sdata;
 814         int ret = 0;
 815
 816         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 817                 return 0;
 818
 819         mutex_lock(&local->iflist_mtx);
 820         if (local->use_chanctx) {
 821                 sdata = rcu_dereference_protected(
 822                                 local->monitor_sdata,
 823                                 lockdep_is_held(&local->iflist_mtx));
 824                 if (sdata) {
 825                         ieee80211_vif_release_channel(sdata);
 826                         ret = ieee80211_vif_use_channel(sdata, chandef,
 827                                         IEEE80211_CHANCTX_EXCLUSIVE);
 828                 }
 829         } else if (local->open_count == local->monitors) {
 830                 local->_oper_chandef = *chandef;
 831                 ieee80211_hw_config(local, 0);
 832         }
 833
 834         if (ret == 0)
 835                 local->monitor_chandef = *chandef;
 836         mutex_unlock(&local->iflist_mtx);
 837
 838         return ret;
 839 }
 840
 841 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 842                                     const u8 *resp, size_t resp_len)
 843 {
 844         struct probe_resp *new, *old;
 845
 846         if (!resp || !resp_len)
 847                 return 1;
 848
 849         old = rtnl_dereference(sdata->u.ap.probe_resp);
 850
 851         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 852         if (!new)
 853                 return -ENOMEM;
 854
 855         new->len = resp_len;
 856         memcpy(new->data, resp, resp_len);
 857
 858         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 859         if (old)
 860                 kfree_rcu(old, rcu_head);
 861
 862         return 0;
 863 }
 864
 865 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 866                             struct cfg80211_beacon_data *params)
 867 {
 868         struct beacon_data *new, *old;
 869         int new_head_len, new_tail_len;
 870         int size, err;
 871         u32 changed = BSS_CHANGED_BEACON;
 872
 873         old = rtnl_dereference(sdata->u.ap.beacon);
 874
 875         /* Need to have a beacon head if we don't have one yet */
 876         if (!params->head && !old)
 877                 return -EINVAL;
 878
 879         /* new or old head? */
 880         if (params->head)
 881                 new_head_len = params->head_len;
 882         else
 883                 new_head_len = old->head_len;
 884
 885         /* new or old tail? */
 886         if (params->tail || !old)
 887                 /* params->tail_len will be zero for !params->tail */
 888                 new_tail_len = params->tail_len;
 889         else
 890                 new_tail_len = old->tail_len;
 891
 892         size = sizeof(*new) + new_head_len + new_tail_len;
 893
 894         new = kzalloc(size, GFP_KERNEL);
 895         if (!new)
 896                 return -ENOMEM;
 897
 898         /* start filling the new info now */
 899
 900         /*
 901          * pointers go into the block we allocated,
 902          * memory is | beacon_data | head | tail |
 903          */
 904         new->head = ((u8 *) new) + sizeof(*new);
 905         new->tail = new->head + new_head_len;
 906         new->head_len = new_head_len;
 907         new->tail_len = new_tail_len;
 908
 909         /* copy in head */
 910         if (params->head)
 911                 memcpy(new->head, params->head, new_head_len);
 912         else
 913                 memcpy(new->head, old->head, new_head_len);
 914
 915         /* copy in optional tail */
 916         if (params->tail)
 917                 memcpy(new->tail, params->tail, new_tail_len);
 918         else
 919                 if (old)
 920                         memcpy(new->tail, old->tail, new_tail_len);
 921
 922         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 923                                        params->probe_resp_len);
 924         if (err < 0)
 925                 return err;
 926         if (err == 0)
 927                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 928
 929         rcu_assign_pointer(sdata->u.ap.beacon, new);
 930
 931         if (old)
 932                 kfree_rcu(old, rcu_head);
 933
 934         return changed;
 935 }
 936
 937 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 938                               struct cfg80211_ap_settings *params)
 939 {
 940         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 941         struct beacon_data *old;
 942         struct ieee80211_sub_if_data *vlan;
 943         u32 changed = BSS_CHANGED_BEACON_INT |
 944                       BSS_CHANGED_BEACON_ENABLED |
 945                       BSS_CHANGED_BEACON |
 946                       BSS_CHANGED_SSID |
 947                       BSS_CHANGED_P2P_PS;
 948         int err;
 949
 950         old = rtnl_dereference(sdata->u.ap.beacon);
 951         if (old)
 952                 return -EALREADY;
 953
 954         /* TODO: make hostapd tell us what it wants */
 955         sdata->smps_mode = IEEE80211_SMPS_OFF;
 956         sdata->needed_rx_chains = sdata->local->rx_chains;
 957         sdata->radar_required = params->radar_required;
 958
 959         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 960                                         IEEE80211_CHANCTX_SHARED);
 961         if (err)
 962                 return err;
 963         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 964
 965         /*
 966          * Apply control port protocol, this allows us to
 967          * not encrypt dynamic WEP control frames.
 968          */
 969         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 970         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 971         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 972                 vlan->control_port_protocol =
 973                         params->crypto.control_port_ethertype;
 974                 vlan->control_port_no_encrypt =
 975                         params->crypto.control_port_no_encrypt;
 976         }
 977
 978         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 979         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 980         sdata->vif.bss_conf.enable_beacon = true;
 981
 982         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 983         if (params->ssid_len)
 984                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 985                        params->ssid_len);
 986         sdata->vif.bss_conf.hidden_ssid =
 987                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 988
 989         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 990                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 991         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 992                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 993         if (params->p2p_opp_ps)
 994                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 995                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 996
 997         err = ieee80211_assign_beacon(sdata, &params->beacon);
 998         if (err < 0)
 999                 return err;
1000         changed |= err;
1001
1002         err = drv_start_ap(sdata->local, sdata);
1003         if (err) {
1004                 old = rtnl_dereference(sdata->u.ap.beacon);
1005                 if (old)
1006                         kfree_rcu(old, rcu_head);
1007                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1008                 return err;
1009         }
1010
1011         ieee80211_bss_info_change_notify(sdata, changed);
1012
1013         netif_carrier_on(dev);
1014         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1015                 netif_carrier_on(vlan->dev);
1016
1017         return 0;
1018 }
1019
1020 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1021                                    struct cfg80211_beacon_data *params)
1022 {
1023         struct ieee80211_sub_if_data *sdata;
1024         struct beacon_data *old;
1025         int err;
1026
1027         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1028
1029         /* don't allow changing the beacon while CSA is in place - offset
1030          * of channel switch counter may change
1031          */
1032         if (sdata->vif.csa_active)
1033                 return -EBUSY;
1034
1035         old = rtnl_dereference(sdata->u.ap.beacon);
1036         if (!old)
1037                 return -ENOENT;
1038
1039         err = ieee80211_assign_beacon(sdata, params);
1040         if (err < 0)
1041                 return err;
1042         ieee80211_bss_info_change_notify(sdata, err);
1043         return 0;
1044 }
1045
1046 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1047 {
1048         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049         struct ieee80211_sub_if_data *vlan;
1050         struct ieee80211_local *local = sdata->local;
1051         struct beacon_data *old_beacon;
1052         struct probe_resp *old_probe_resp;
1053
1054         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1055         if (!old_beacon)
1056                 return -ENOENT;
1057         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1058
1059         /* abort any running channel switch */
1060         sdata->vif.csa_active = false;
1061         cancel_work_sync(&sdata->csa_finalize_work);
1062         cancel_work_sync(&sdata->u.ap.request_smps_work);
1063
1064         /* turn off carrier for this interface and dependent VLANs */
1065         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1066                 netif_carrier_off(vlan->dev);
1067         netif_carrier_off(dev);
1068
1069         /* remove beacon and probe response */
1070         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1071         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1072         kfree_rcu(old_beacon, rcu_head);
1073         if (old_probe_resp)
1074                 kfree_rcu(old_probe_resp, rcu_head);
1075
1076         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1077                 sta_info_flush_defer(vlan);
1078         sta_info_flush_defer(sdata);
1079         synchronize_net();
1080         rcu_barrier();
1081         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1082                 sta_info_flush_cleanup(vlan);
1083                 ieee80211_free_keys(vlan);
1084         }
1085         sta_info_flush_cleanup(sdata);
1086         ieee80211_free_keys(sdata);
1087
1088         sdata->vif.bss_conf.enable_beacon = false;
1089         sdata->vif.bss_conf.ssid_len = 0;
1090         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1091         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1092
1093         if (sdata->wdev.cac_started) {
1094                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1095                 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
1096                                    GFP_KERNEL);
1097         }
1098
1099         drv_stop_ap(sdata->local, sdata);
1100
1101         /* free all potentially still buffered bcast frames */
1102         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1103         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1104
1105         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1106         ieee80211_vif_release_channel(sdata);
1107
1108         return 0;
1109 }
1110
1111 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1112 struct iapp_layer2_update {
1113         u8 da[ETH_ALEN];        /* broadcast */
1114         u8 sa[ETH_ALEN];        /* STA addr */
1115         __be16 len;             /* 6 */
1116         u8 dsap;                /* 0 */
1117         u8 ssap;                /* 0 */
1118         u8 control;
1119         u8 xid_info[3];
1120 } __packed;
1121
1122 static void ieee80211_send_layer2_update(struct sta_info *sta)
1123 {
1124         struct iapp_layer2_update *msg;
1125         struct sk_buff *skb;
1126
1127         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1128          * bridge devices */
1129
1130         skb = dev_alloc_skb(sizeof(*msg));
1131         if (!skb)
1132                 return;
1133         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1134
1135         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1136          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1137
1138         eth_broadcast_addr(msg->da);
1139         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1140         msg->len = htons(6);
1141         msg->dsap = 0;
1142         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1143         msg->control = 0xaf;    /* XID response lsb.1111F101.
1144                                  * F=0 (no poll command; unsolicited frame) */
1145         msg->xid_info[0] = 0x81;        /* XID format identifier */
1146         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1147         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1148
1149         skb->dev = sta->sdata->dev;
1150         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1151         memset(skb->cb, 0, sizeof(skb->cb));
1152         netif_rx_ni(skb);
1153 }
1154
1155 static int sta_apply_auth_flags(struct ieee80211_local *local,
1156                                 struct sta_info *sta,
1157                                 u32 mask, u32 set)
1158 {
1159         int ret;
1160
1161         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1162             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1163             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1164                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1165                 if (ret)
1166                         return ret;
1167         }
1168
1169         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1170             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1171             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1172                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1173                 if (ret)
1174                         return ret;
1175         }
1176
1177         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1178                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1179                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1180                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1181                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1182                 else
1183                         ret = 0;
1184                 if (ret)
1185                         return ret;
1186         }
1187
1188         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1189             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1190             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1191                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1192                 if (ret)
1193                         return ret;
1194         }
1195
1196         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1197             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1198             test_sta_flag(sta, WLAN_STA_AUTH)) {
1199                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1200                 if (ret)
1201                         return ret;
1202         }
1203
1204         return 0;
1205 }
1206
1207 static int sta_apply_parameters(struct ieee80211_local *local,
1208                                 struct sta_info *sta,
1209                                 struct station_parameters *params)
1210 {
1211         int ret = 0;
1212         struct ieee80211_supported_band *sband;
1213         struct ieee80211_sub_if_data *sdata = sta->sdata;
1214         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1215         u32 mask, set;
1216
1217         sband = local->hw.wiphy->bands[band];
1218
1219         mask = params->sta_flags_mask;
1220         set = params->sta_flags_set;
1221
1222         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1223                 /*
1224                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1225                  * API but must follow AUTHENTICATED for driver state.
1226                  */
1227                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1228                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1229                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1230                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1231         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1232                 /*
1233                  * TDLS -- everything follows authorized, but
1234                  * only becoming authorized is possible, not
1235                  * going back
1236                  */
1237                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1238                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1239                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1240                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1241                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1242                 }
1243         }
1244
1245         ret = sta_apply_auth_flags(local, sta, mask, set);
1246         if (ret)
1247                 return ret;
1248
1249         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1250                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1251                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1252                 else
1253                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1254         }
1255
1256         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1257                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1258                         set_sta_flag(sta, WLAN_STA_WME);
1259                         sta->sta.wme = true;
1260                 } else {
1261                         clear_sta_flag(sta, WLAN_STA_WME);
1262                         sta->sta.wme = false;
1263                 }
1264         }
1265
1266         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1267                 if (set & BIT(NL80211_STA_FLAG_MFP))
1268                         set_sta_flag(sta, WLAN_STA_MFP);
1269                 else
1270                         clear_sta_flag(sta, WLAN_STA_MFP);
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1274                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1275                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1276                 else
1277                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1278         }
1279
1280         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1281                 sta->sta.uapsd_queues = params->uapsd_queues;
1282                 sta->sta.max_sp = params->max_sp;
1283         }
1284
1285         /*
1286          * cfg80211 validates this (1-2007) and allows setting the AID
1287          * only when creating a new station entry
1288          */
1289         if (params->aid)
1290                 sta->sta.aid = params->aid;
1291
1292         /*
1293          * Some of the following updates would be racy if called on an
1294          * existing station, via ieee80211_change_station(). However,
1295          * all such changes are rejected by cfg80211 except for updates
1296          * changing the supported rates on an existing but not yet used
1297          * TDLS peer.
1298          */
1299
1300         if (params->listen_interval >= 0)
1301                 sta->listen_interval = params->listen_interval;
1302
1303         if (params->supported_rates) {
1304                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1305                                          sband, params->supported_rates,
1306                                          params->supported_rates_len,
1307                                          &sta->sta.supp_rates[band]);
1308         }
1309
1310         if (params->ht_capa)
1311                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1312                                                   params->ht_capa, sta);
1313
1314         if (params->vht_capa)
1315                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1316                                                     params->vht_capa, sta);
1317
1318         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1319 #ifdef CONFIG_MAC80211_MESH
1320                 u32 changed = 0;
1321
1322                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1323                         switch (params->plink_state) {
1324                         case NL80211_PLINK_ESTAB:
1325                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1326                                         changed = mesh_plink_inc_estab_count(
1327                                                         sdata);
1328                                 sta->plink_state = params->plink_state;
1329
1330                                 ieee80211_mps_sta_status_update(sta);
1331                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1332                                               sdata->u.mesh.mshcfg.power_mode);
1333                                 break;
1334                         case NL80211_PLINK_LISTEN:
1335                         case NL80211_PLINK_BLOCKED:
1336                         case NL80211_PLINK_OPN_SNT:
1337                         case NL80211_PLINK_OPN_RCVD:
1338                         case NL80211_PLINK_CNF_RCVD:
1339                         case NL80211_PLINK_HOLDING:
1340                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1341                                         changed = mesh_plink_dec_estab_count(
1342                                                         sdata);
1343                                 sta->plink_state = params->plink_state;
1344
1345                                 ieee80211_mps_sta_status_update(sta);
1346                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1347                                                 NL80211_MESH_POWER_UNKNOWN);
1348                                 break;
1349                         default:
1350                                 /*  nothing  */
1351                                 break;
1352                         }
1353                 }
1354
1355                 switch (params->plink_action) {
1356                 case NL80211_PLINK_ACTION_NO_ACTION:
1357                         /* nothing */
1358                         break;
1359                 case NL80211_PLINK_ACTION_OPEN:
1360                         changed |= mesh_plink_open(sta);
1361                         break;
1362                 case NL80211_PLINK_ACTION_BLOCK:
1363                         changed |= mesh_plink_block(sta);
1364                         break;
1365                 }
1366
1367                 if (params->local_pm)
1368                         changed |=
1369                               ieee80211_mps_set_sta_local_pm(sta,
1370                                                              params->local_pm);
1371                 ieee80211_bss_info_change_notify(sdata, changed);
1372 #endif
1373         }
1374
1375         return 0;
1376 }
1377
1378 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1379                                  u8 *mac, struct station_parameters *params)
1380 {
1381         struct ieee80211_local *local = wiphy_priv(wiphy);
1382         struct sta_info *sta;
1383         struct ieee80211_sub_if_data *sdata;
1384         int err;
1385         int layer2_update;
1386
1387         if (params->vlan) {
1388                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1389
1390                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1391                     sdata->vif.type != NL80211_IFTYPE_AP)
1392                         return -EINVAL;
1393         } else
1394                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1395
1396         if (ether_addr_equal(mac, sdata->vif.addr))
1397                 return -EINVAL;
1398
1399         if (is_multicast_ether_addr(mac))
1400                 return -EINVAL;
1401
1402         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1403         if (!sta)
1404                 return -ENOMEM;
1405
1406         /*
1407          * defaults -- if userspace wants something else we'll
1408          * change it accordingly in sta_apply_parameters()
1409          */
1410         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1411                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1412                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1413         }
1414
1415         err = sta_apply_parameters(local, sta, params);
1416         if (err) {
1417                 sta_info_free(local, sta);
1418                 return err;
1419         }
1420
1421         /*
1422          * for TDLS, rate control should be initialized only when
1423          * rates are known and station is marked authorized
1424          */
1425         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1426                 rate_control_rate_init(sta);
1427
1428         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1429                 sdata->vif.type == NL80211_IFTYPE_AP;
1430
1431         err = sta_info_insert_rcu(sta);
1432         if (err) {
1433                 rcu_read_unlock();
1434                 return err;
1435         }
1436
1437         if (layer2_update)
1438                 ieee80211_send_layer2_update(sta);
1439
1440         rcu_read_unlock();
1441
1442         return 0;
1443 }
1444
1445 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1446                                  u8 *mac)
1447 {
1448         struct ieee80211_sub_if_data *sdata;
1449
1450         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452         if (mac)
1453                 return sta_info_destroy_addr_bss(sdata, mac);
1454
1455         sta_info_flush(sdata);
1456         return 0;
1457 }
1458
1459 static int ieee80211_change_station(struct wiphy *wiphy,
1460                                     struct net_device *dev, u8 *mac,
1461                                     struct station_parameters *params)
1462 {
1463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1464         struct ieee80211_local *local = wiphy_priv(wiphy);
1465         struct sta_info *sta;
1466         struct ieee80211_sub_if_data *vlansdata;
1467         enum cfg80211_station_type statype;
1468         int err;
1469
1470         mutex_lock(&local->sta_mtx);
1471
1472         sta = sta_info_get_bss(sdata, mac);
1473         if (!sta) {
1474                 err = -ENOENT;
1475                 goto out_err;
1476         }
1477
1478         switch (sdata->vif.type) {
1479         case NL80211_IFTYPE_MESH_POINT:
1480                 if (sdata->u.mesh.user_mpm)
1481                         statype = CFG80211_STA_MESH_PEER_USER;
1482                 else
1483                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1484                 break;
1485         case NL80211_IFTYPE_ADHOC:
1486                 statype = CFG80211_STA_IBSS;
1487                 break;
1488         case NL80211_IFTYPE_STATION:
1489                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1490                         statype = CFG80211_STA_AP_STA;
1491                         break;
1492                 }
1493                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1494                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1495                 else
1496                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1497                 break;
1498         case NL80211_IFTYPE_AP:
1499         case NL80211_IFTYPE_AP_VLAN:
1500                 statype = CFG80211_STA_AP_CLIENT;
1501                 break;
1502         default:
1503                 err = -EOPNOTSUPP;
1504                 goto out_err;
1505         }
1506
1507         err = cfg80211_check_station_change(wiphy, params, statype);
1508         if (err)
1509                 goto out_err;
1510
1511         if (params->vlan && params->vlan != sta->sdata->dev) {
1512                 bool prev_4addr = false;
1513                 bool new_4addr = false;
1514
1515                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1516
1517                 if (params->vlan->ieee80211_ptr->use_4addr) {
1518                         if (vlansdata->u.vlan.sta) {
1519                                 err = -EBUSY;
1520                                 goto out_err;
1521                         }
1522
1523                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1524                         new_4addr = true;
1525                 }
1526
1527                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1528                     sta->sdata->u.vlan.sta) {
1529                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1530                         prev_4addr = true;
1531                 }
1532
1533                 sta->sdata = vlansdata;
1534
1535                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1536                     prev_4addr != new_4addr) {
1537                         if (new_4addr)
1538                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1539                         else
1540                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1541                 }
1542
1543                 ieee80211_send_layer2_update(sta);
1544         }
1545
1546         err = sta_apply_parameters(local, sta, params);
1547         if (err)
1548                 goto out_err;
1549
1550         /* When peer becomes authorized, init rate control as well */
1551         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1552             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1553                 rate_control_rate_init(sta);
1554
1555         mutex_unlock(&local->sta_mtx);
1556
1557         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1558              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1559             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1560             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1561             sta_info_tx_streams(sta) != 1) {
1562                 ht_dbg(sta->sdata,
1563                        "%pM just authorized and MIMO capable - update SMPS\n",
1564                        sta->sta.addr);
1565                 ieee80211_send_smps_action(sta->sdata,
1566                         sta->sdata->bss->req_smps,
1567                         sta->sta.addr,
1568                         sta->sdata->vif.bss_conf.bssid);
1569         }
1570
1571         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1572             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1573                 ieee80211_recalc_ps(local, -1);
1574                 ieee80211_recalc_ps_vif(sdata);
1575         }
1576
1577         return 0;
1578 out_err:
1579         mutex_unlock(&local->sta_mtx);
1580         return err;
1581 }
1582
1583 #ifdef CONFIG_MAC80211_MESH
1584 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1585                                  u8 *dst, u8 *next_hop)
1586 {
1587         struct ieee80211_sub_if_data *sdata;
1588         struct mesh_path *mpath;
1589         struct sta_info *sta;
1590
1591         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1592
1593         rcu_read_lock();
1594         sta = sta_info_get(sdata, next_hop);
1595         if (!sta) {
1596                 rcu_read_unlock();
1597                 return -ENOENT;
1598         }
1599
1600         mpath = mesh_path_add(sdata, dst);
1601         if (IS_ERR(mpath)) {
1602                 rcu_read_unlock();
1603                 return PTR_ERR(mpath);
1604         }
1605
1606         mesh_path_fix_nexthop(mpath, sta);
1607
1608         rcu_read_unlock();
1609         return 0;
1610 }
1611
1612 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1613                                u8 *dst)
1614 {
1615         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1616
1617         if (dst)
1618                 return mesh_path_del(sdata, dst);
1619
1620         mesh_path_flush_by_iface(sdata);
1621         return 0;
1622 }
1623
1624 static int ieee80211_change_mpath(struct wiphy *wiphy,
1625                                     struct net_device *dev,
1626                                     u8 *dst, u8 *next_hop)
1627 {
1628         struct ieee80211_sub_if_data *sdata;
1629         struct mesh_path *mpath;
1630         struct sta_info *sta;
1631
1632         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634         rcu_read_lock();
1635
1636         sta = sta_info_get(sdata, next_hop);
1637         if (!sta) {
1638                 rcu_read_unlock();
1639                 return -ENOENT;
1640         }
1641
1642         mpath = mesh_path_lookup(sdata, dst);
1643         if (!mpath) {
1644                 rcu_read_unlock();
1645                 return -ENOENT;
1646         }
1647
1648         mesh_path_fix_nexthop(mpath, sta);
1649
1650         rcu_read_unlock();
1651         return 0;
1652 }
1653
1654 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1655                             struct mpath_info *pinfo)
1656 {
1657         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1658
1659         if (next_hop_sta)
1660                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1661         else
1662                 memset(next_hop, 0, ETH_ALEN);
1663
1664         memset(pinfo, 0, sizeof(*pinfo));
1665
1666         pinfo->generation = mesh_paths_generation;
1667
1668         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1669                         MPATH_INFO_SN |
1670                         MPATH_INFO_METRIC |
1671                         MPATH_INFO_EXPTIME |
1672                         MPATH_INFO_DISCOVERY_TIMEOUT |
1673                         MPATH_INFO_DISCOVERY_RETRIES |
1674                         MPATH_INFO_FLAGS;
1675
1676         pinfo->frame_qlen = mpath->frame_queue.qlen;
1677         pinfo->sn = mpath->sn;
1678         pinfo->metric = mpath->metric;
1679         if (time_before(jiffies, mpath->exp_time))
1680                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1681         pinfo->discovery_timeout =
1682                         jiffies_to_msecs(mpath->discovery_timeout);
1683         pinfo->discovery_retries = mpath->discovery_retries;
1684         if (mpath->flags & MESH_PATH_ACTIVE)
1685                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1686         if (mpath->flags & MESH_PATH_RESOLVING)
1687                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1688         if (mpath->flags & MESH_PATH_SN_VALID)
1689                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1690         if (mpath->flags & MESH_PATH_FIXED)
1691                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1692         if (mpath->flags & MESH_PATH_RESOLVED)
1693                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1694 }
1695
1696 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1697                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1698
1699 {
1700         struct ieee80211_sub_if_data *sdata;
1701         struct mesh_path *mpath;
1702
1703         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704
1705         rcu_read_lock();
1706         mpath = mesh_path_lookup(sdata, dst);
1707         if (!mpath) {
1708                 rcu_read_unlock();
1709                 return -ENOENT;
1710         }
1711         memcpy(dst, mpath->dst, ETH_ALEN);
1712         mpath_set_pinfo(mpath, next_hop, pinfo);
1713         rcu_read_unlock();
1714         return 0;
1715 }
1716
1717 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1718                                  int idx, u8 *dst, u8 *next_hop,
1719                                  struct mpath_info *pinfo)
1720 {
1721         struct ieee80211_sub_if_data *sdata;
1722         struct mesh_path *mpath;
1723
1724         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1725
1726         rcu_read_lock();
1727         mpath = mesh_path_lookup_by_idx(sdata, idx);
1728         if (!mpath) {
1729                 rcu_read_unlock();
1730                 return -ENOENT;
1731         }
1732         memcpy(dst, mpath->dst, ETH_ALEN);
1733         mpath_set_pinfo(mpath, next_hop, pinfo);
1734         rcu_read_unlock();
1735         return 0;
1736 }
1737
1738 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1739                                 struct net_device *dev,
1740                                 struct mesh_config *conf)
1741 {
1742         struct ieee80211_sub_if_data *sdata;
1743         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1744
1745         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1746         return 0;
1747 }
1748
1749 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1750 {
1751         return (mask >> (parm-1)) & 0x1;
1752 }
1753
1754 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1755                 const struct mesh_setup *setup)
1756 {
1757         u8 *new_ie;
1758         const u8 *old_ie;
1759         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1760                                         struct ieee80211_sub_if_data, u.mesh);
1761
1762         /* allocate information elements */
1763         new_ie = NULL;
1764         old_ie = ifmsh->ie;
1765
1766         if (setup->ie_len) {
1767                 new_ie = kmemdup(setup->ie, setup->ie_len,
1768                                 GFP_KERNEL);
1769                 if (!new_ie)
1770                         return -ENOMEM;
1771         }
1772         ifmsh->ie_len = setup->ie_len;
1773         ifmsh->ie = new_ie;
1774         kfree(old_ie);
1775
1776         /* now copy the rest of the setup parameters */
1777         ifmsh->mesh_id_len = setup->mesh_id_len;
1778         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1779         ifmsh->mesh_sp_id = setup->sync_method;
1780         ifmsh->mesh_pp_id = setup->path_sel_proto;
1781         ifmsh->mesh_pm_id = setup->path_metric;
1782         ifmsh->user_mpm = setup->user_mpm;
1783         ifmsh->mesh_auth_id = setup->auth_id;
1784         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1785         if (setup->is_authenticated)
1786                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1787         if (setup->is_secure)
1788                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1789
1790         /* mcast rate setting in Mesh Node */
1791         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1792                                                 sizeof(setup->mcast_rate));
1793         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1794
1795         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1796         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1797
1798         return 0;
1799 }
1800
1801 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1802                                         struct net_device *dev, u32 mask,
1803                                         const struct mesh_config *nconf)
1804 {
1805         struct mesh_config *conf;
1806         struct ieee80211_sub_if_data *sdata;
1807         struct ieee80211_if_mesh *ifmsh;
1808
1809         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1810         ifmsh = &sdata->u.mesh;
1811
1812         /* Set the config options which we are interested in setting */
1813         conf = &(sdata->u.mesh.mshcfg);
1814         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1815                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1816         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1817                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1818         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1819                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1820         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1821                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1822         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1823                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1824         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1825                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1826         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1827                 conf->element_ttl = nconf->element_ttl;
1828         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1829                 if (ifmsh->user_mpm)
1830                         return -EBUSY;
1831                 conf->auto_open_plinks = nconf->auto_open_plinks;
1832         }
1833         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1834                 conf->dot11MeshNbrOffsetMaxNeighbor =
1835                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1836         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1837                 conf->dot11MeshHWMPmaxPREQretries =
1838                         nconf->dot11MeshHWMPmaxPREQretries;
1839         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1840                 conf->path_refresh_time = nconf->path_refresh_time;
1841         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1842                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1843         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1844                 conf->dot11MeshHWMPactivePathTimeout =
1845                         nconf->dot11MeshHWMPactivePathTimeout;
1846         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1847                 conf->dot11MeshHWMPpreqMinInterval =
1848                         nconf->dot11MeshHWMPpreqMinInterval;
1849         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1850                 conf->dot11MeshHWMPperrMinInterval =
1851                         nconf->dot11MeshHWMPperrMinInterval;
1852         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1853                            mask))
1854                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1855                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1856         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1857                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1858                 ieee80211_mesh_root_setup(ifmsh);
1859         }
1860         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1861                 /* our current gate announcement implementation rides on root
1862                  * announcements, so require this ifmsh to also be a root node
1863                  * */
1864                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1865                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1866                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1867                         ieee80211_mesh_root_setup(ifmsh);
1868                 }
1869                 conf->dot11MeshGateAnnouncementProtocol =
1870                         nconf->dot11MeshGateAnnouncementProtocol;
1871         }
1872         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1873                 conf->dot11MeshHWMPRannInterval =
1874                         nconf->dot11MeshHWMPRannInterval;
1875         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1876                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1878                 /* our RSSI threshold implementation is supported only for
1879                  * devices that report signal in dBm.
1880                  */
1881                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1882                         return -ENOTSUPP;
1883                 conf->rssi_threshold = nconf->rssi_threshold;
1884         }
1885         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1886                 conf->ht_opmode = nconf->ht_opmode;
1887                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1888                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1889         }
1890         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1891                 conf->dot11MeshHWMPactivePathToRootTimeout =
1892                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1893         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1894                 conf->dot11MeshHWMProotInterval =
1895                         nconf->dot11MeshHWMProotInterval;
1896         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1897                 conf->dot11MeshHWMPconfirmationInterval =
1898                         nconf->dot11MeshHWMPconfirmationInterval;
1899         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1900                 conf->power_mode = nconf->power_mode;
1901                 ieee80211_mps_local_status_update(sdata);
1902         }
1903         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1904                 conf->dot11MeshAwakeWindowDuration =
1905                         nconf->dot11MeshAwakeWindowDuration;
1906         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1907                 conf->plink_timeout = nconf->plink_timeout;
1908         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1909         return 0;
1910 }
1911
1912 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1913                                const struct mesh_config *conf,
1914                                const struct mesh_setup *setup)
1915 {
1916         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1917         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1918         int err;
1919
1920         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1921         err = copy_mesh_setup(ifmsh, setup);
1922         if (err)
1923                 return err;
1924
1925         /* can mesh use other SMPS modes? */
1926         sdata->smps_mode = IEEE80211_SMPS_OFF;
1927         sdata->needed_rx_chains = sdata->local->rx_chains;
1928
1929         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1930                                         IEEE80211_CHANCTX_SHARED);
1931         if (err)
1932                 return err;
1933
1934         return ieee80211_start_mesh(sdata);
1935 }
1936
1937 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1938 {
1939         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1940
1941         ieee80211_stop_mesh(sdata);
1942         ieee80211_vif_release_channel(sdata);
1943
1944         return 0;
1945 }
1946 #endif
1947
1948 static int ieee80211_change_bss(struct wiphy *wiphy,
1949                                 struct net_device *dev,
1950                                 struct bss_parameters *params)
1951 {
1952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1953         enum ieee80211_band band;
1954         u32 changed = 0;
1955
1956         if (!rtnl_dereference(sdata->u.ap.beacon))
1957                 return -ENOENT;
1958
1959         band = ieee80211_get_sdata_band(sdata);
1960
1961         if (params->use_cts_prot >= 0) {
1962                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1963                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1964         }
1965         if (params->use_short_preamble >= 0) {
1966                 sdata->vif.bss_conf.use_short_preamble =
1967                         params->use_short_preamble;
1968                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1969         }
1970
1971         if (!sdata->vif.bss_conf.use_short_slot &&
1972             band == IEEE80211_BAND_5GHZ) {
1973                 sdata->vif.bss_conf.use_short_slot = true;
1974                 changed |= BSS_CHANGED_ERP_SLOT;
1975         }
1976
1977         if (params->use_short_slot_time >= 0) {
1978                 sdata->vif.bss_conf.use_short_slot =
1979                         params->use_short_slot_time;
1980                 changed |= BSS_CHANGED_ERP_SLOT;
1981         }
1982
1983         if (params->basic_rates) {
1984                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1985                                          wiphy->bands[band],
1986                                          params->basic_rates,
1987                                          params->basic_rates_len,
1988                                          &sdata->vif.bss_conf.basic_rates);
1989                 changed |= BSS_CHANGED_BASIC_RATES;
1990         }
1991
1992         if (params->ap_isolate >= 0) {
1993                 if (params->ap_isolate)
1994                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1995                 else
1996                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1997         }
1998
1999         if (params->ht_opmode >= 0) {
2000                 sdata->vif.bss_conf.ht_operation_mode =
2001                         (u16) params->ht_opmode;
2002                 changed |= BSS_CHANGED_HT;
2003         }
2004
2005         if (params->p2p_ctwindow >= 0) {
2006                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2007                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2008                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2009                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2010                 changed |= BSS_CHANGED_P2P_PS;
2011         }
2012
2013         if (params->p2p_opp_ps > 0) {
2014                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2015                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2016                 changed |= BSS_CHANGED_P2P_PS;
2017         } else if (params->p2p_opp_ps == 0) {
2018                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2019                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2020                 changed |= BSS_CHANGED_P2P_PS;
2021         }
2022
2023         ieee80211_bss_info_change_notify(sdata, changed);
2024
2025         return 0;
2026 }
2027
2028 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2029                                     struct net_device *dev,
2030                                     struct ieee80211_txq_params *params)
2031 {
2032         struct ieee80211_local *local = wiphy_priv(wiphy);
2033         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2034         struct ieee80211_tx_queue_params p;
2035
2036         if (!local->ops->conf_tx)
2037                 return -EOPNOTSUPP;
2038
2039         if (local->hw.queues < IEEE80211_NUM_ACS)
2040                 return -EOPNOTSUPP;
2041
2042         memset(&p, 0, sizeof(p));
2043         p.aifs = params->aifs;
2044         p.cw_max = params->cwmax;
2045         p.cw_min = params->cwmin;
2046         p.txop = params->txop;
2047
2048         /*
2049          * Setting tx queue params disables u-apsd because it's only
2050          * called in master mode.
2051          */
2052         p.uapsd = false;
2053
2054         sdata->tx_conf[params->ac] = p;
2055         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2056                 wiphy_debug(local->hw.wiphy,
2057                             "failed to set TX queue parameters for AC %d\n",
2058                             params->ac);
2059                 return -EINVAL;
2060         }
2061
2062         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2063
2064         return 0;
2065 }
2066
2067 #ifdef CONFIG_PM
2068 static int ieee80211_suspend(struct wiphy *wiphy,
2069                              struct cfg80211_wowlan *wowlan)
2070 {
2071         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2072 }
2073
2074 static int ieee80211_resume(struct wiphy *wiphy)
2075 {
2076         return __ieee80211_resume(wiphy_priv(wiphy));
2077 }
2078 #else
2079 #define ieee80211_suspend NULL
2080 #define ieee80211_resume NULL
2081 #endif
2082
2083 static int ieee80211_scan(struct wiphy *wiphy,
2084                           struct cfg80211_scan_request *req)
2085 {
2086         struct ieee80211_sub_if_data *sdata;
2087
2088         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2089
2090         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2091         case NL80211_IFTYPE_STATION:
2092         case NL80211_IFTYPE_ADHOC:
2093         case NL80211_IFTYPE_MESH_POINT:
2094         case NL80211_IFTYPE_P2P_CLIENT:
2095         case NL80211_IFTYPE_P2P_DEVICE:
2096                 break;
2097         case NL80211_IFTYPE_P2P_GO:
2098                 if (sdata->local->ops->hw_scan)
2099                         break;
2100                 /*
2101                  * FIXME: implement NoA while scanning in software,
2102                  * for now fall through to allow scanning only when
2103                  * beaconing hasn't been configured yet
2104                  */
2105         case NL80211_IFTYPE_AP:
2106                 /*
2107                  * If the scan has been forced (and the driver supports
2108                  * forcing), don't care about being beaconing already.
2109                  * This will create problems to the attached stations (e.g. all
2110                  * the  frames sent while scanning on other channel will be
2111                  * lost)
2112                  */
2113                 if (sdata->u.ap.beacon &&
2114                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2115                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2116                         return -EOPNOTSUPP;
2117                 break;
2118         default:
2119                 return -EOPNOTSUPP;
2120         }
2121
2122         return ieee80211_request_scan(sdata, req);
2123 }
2124
2125 static int
2126 ieee80211_sched_scan_start(struct wiphy *wiphy,
2127                            struct net_device *dev,
2128                            struct cfg80211_sched_scan_request *req)
2129 {
2130         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2131
2132         if (!sdata->local->ops->sched_scan_start)
2133                 return -EOPNOTSUPP;
2134
2135         return ieee80211_request_sched_scan_start(sdata, req);
2136 }
2137
2138 static int
2139 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2140 {
2141         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2142
2143         if (!sdata->local->ops->sched_scan_stop)
2144                 return -EOPNOTSUPP;
2145
2146         return ieee80211_request_sched_scan_stop(sdata);
2147 }
2148
2149 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2150                           struct cfg80211_auth_request *req)
2151 {
2152         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2153 }
2154
2155 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2156                            struct cfg80211_assoc_request *req)
2157 {
2158         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2159 }
2160
2161 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2162                             struct cfg80211_deauth_request *req)
2163 {
2164         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2165 }
2166
2167 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2168                               struct cfg80211_disassoc_request *req)
2169 {
2170         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2171 }
2172
2173 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2174                                struct cfg80211_ibss_params *params)
2175 {
2176         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2177 }
2178
2179 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2180 {
2181         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2182 }
2183
2184 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2185                                     int rate[IEEE80211_NUM_BANDS])
2186 {
2187         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2188
2189         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2190                sizeof(int) * IEEE80211_NUM_BANDS);
2191
2192         return 0;
2193 }
2194
2195 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2196 {
2197         struct ieee80211_local *local = wiphy_priv(wiphy);
2198         int err;
2199
2200         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2201                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2202
2203                 if (err)
2204                         return err;
2205         }
2206
2207         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2208                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2209
2210                 if (err)
2211                         return err;
2212         }
2213
2214         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2215                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2216
2217                 if (err)
2218                         return err;
2219         }
2220
2221         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2222                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2223                         return -EINVAL;
2224                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2225         }
2226         if (changed & WIPHY_PARAM_RETRY_LONG) {
2227                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2228                         return -EINVAL;
2229                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2230         }
2231         if (changed &
2232             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2233                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2234
2235         return 0;
2236 }
2237
2238 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2239                                   struct wireless_dev *wdev,
2240                                   enum nl80211_tx_power_setting type, int mbm)
2241 {
2242         struct ieee80211_local *local = wiphy_priv(wiphy);
2243         struct ieee80211_sub_if_data *sdata;
2244
2245         if (wdev) {
2246                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2247
2248                 switch (type) {
2249                 case NL80211_TX_POWER_AUTOMATIC:
2250                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2251                         break;
2252                 case NL80211_TX_POWER_LIMITED:
2253                 case NL80211_TX_POWER_FIXED:
2254                         if (mbm < 0 || (mbm % 100))
2255                                 return -EOPNOTSUPP;
2256                         sdata->user_power_level = MBM_TO_DBM(mbm);
2257                         break;
2258                 }
2259
2260                 ieee80211_recalc_txpower(sdata);
2261
2262                 return 0;
2263         }
2264
2265         switch (type) {
2266         case NL80211_TX_POWER_AUTOMATIC:
2267                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2268                 break;
2269         case NL80211_TX_POWER_LIMITED:
2270         case NL80211_TX_POWER_FIXED:
2271                 if (mbm < 0 || (mbm % 100))
2272                         return -EOPNOTSUPP;
2273                 local->user_power_level = MBM_TO_DBM(mbm);
2274                 break;
2275         }
2276
2277         mutex_lock(&local->iflist_mtx);
2278         list_for_each_entry(sdata, &local->interfaces, list)
2279                 sdata->user_power_level = local->user_power_level;
2280         list_for_each_entry(sdata, &local->interfaces, list)
2281                 ieee80211_recalc_txpower(sdata);
2282         mutex_unlock(&local->iflist_mtx);
2283
2284         return 0;
2285 }
2286
2287 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2288                                   struct wireless_dev *wdev,
2289                                   int *dbm)
2290 {
2291         struct ieee80211_local *local = wiphy_priv(wiphy);
2292         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2293
2294         if (!local->use_chanctx)
2295                 *dbm = local->hw.conf.power_level;
2296         else
2297                 *dbm = sdata->vif.bss_conf.txpower;
2298
2299         return 0;
2300 }
2301
2302 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2303                                   const u8 *addr)
2304 {
2305         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2306
2307         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2308
2309         return 0;
2310 }
2311
2312 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2313 {
2314         struct ieee80211_local *local = wiphy_priv(wiphy);
2315
2316         drv_rfkill_poll(local);
2317 }
2318
2319 #ifdef CONFIG_NL80211_TESTMODE
2320 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2321                                   struct wireless_dev *wdev,
2322                                   void *data, int len)
2323 {
2324         struct ieee80211_local *local = wiphy_priv(wiphy);
2325         struct ieee80211_vif *vif = NULL;
2326
2327         if (!local->ops->testmode_cmd)
2328                 return -EOPNOTSUPP;
2329
2330         if (wdev) {
2331                 struct ieee80211_sub_if_data *sdata;
2332
2333                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2334                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2335                         vif = &sdata->vif;
2336         }
2337
2338         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2339 }
2340
2341 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2342                                    struct sk_buff *skb,
2343                                    struct netlink_callback *cb,
2344                                    void *data, int len)
2345 {
2346         struct ieee80211_local *local = wiphy_priv(wiphy);
2347
2348         if (!local->ops->testmode_dump)
2349                 return -EOPNOTSUPP;
2350
2351         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2352 }
2353 #endif
2354
2355 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2356                                 enum ieee80211_smps_mode smps_mode)
2357 {
2358         struct sta_info *sta;
2359         enum ieee80211_smps_mode old_req;
2360         int i;
2361
2362         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2363                 return -EINVAL;
2364
2365         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2366                 return 0;
2367
2368         old_req = sdata->u.ap.req_smps;
2369         sdata->u.ap.req_smps = smps_mode;
2370
2371         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2372         if (old_req == smps_mode ||
2373             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2374                 return 0;
2375
2376          /* If no associated stations, there's no need to do anything */
2377         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2378                 sdata->smps_mode = smps_mode;
2379                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2380                 return 0;
2381         }
2382
2383         ht_dbg(sdata,
2384                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2385                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2386
2387         mutex_lock(&sdata->local->sta_mtx);
2388         for (i = 0; i < STA_HASH_SIZE; i++) {
2389                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2390                                 lockdep_is_held(&sdata->local->sta_mtx));
2391                      sta;
2392                      sta = rcu_dereference_protected(sta->hnext,
2393                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2394                         /*
2395                          * Only stations associated to our AP and
2396                          * associated VLANs
2397                          */
2398                         if (sta->sdata->bss != &sdata->u.ap)
2399                                 continue;
2400
2401                         /* This station doesn't support MIMO - skip it */
2402                         if (sta_info_tx_streams(sta) == 1)
2403                                 continue;
2404
2405                         /*
2406                          * Don't wake up a STA just to send the action frame
2407                          * unless we are getting more restrictive.
2408                          */
2409                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2410                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2411                                                            smps_mode)) {
2412                                 ht_dbg(sdata,
2413                                        "Won't send SMPS to sleeping STA %pM\n",
2414                                        sta->sta.addr);
2415                                 continue;
2416                         }
2417
2418                         /*
2419                          * If the STA is not authorized, wait until it gets
2420                          * authorized and the action frame will be sent then.
2421                          */
2422                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2423                                 continue;
2424
2425                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2426                         ieee80211_send_smps_action(sdata, smps_mode,
2427                                                    sta->sta.addr,
2428                                                    sdata->vif.bss_conf.bssid);
2429                 }
2430         }
2431         mutex_unlock(&sdata->local->sta_mtx);
2432
2433         sdata->smps_mode = smps_mode;
2434         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2435
2436         return 0;
2437 }
2438
2439 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2440                                  enum ieee80211_smps_mode smps_mode)
2441 {
2442         const u8 *ap;
2443         enum ieee80211_smps_mode old_req;
2444         int err;
2445
2446         lockdep_assert_held(&sdata->wdev.mtx);
2447
2448         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2449                 return -EINVAL;
2450
2451         old_req = sdata->u.mgd.req_smps;
2452         sdata->u.mgd.req_smps = smps_mode;
2453
2454         if (old_req == smps_mode &&
2455             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2456                 return 0;
2457
2458         /*
2459          * If not associated, or current association is not an HT
2460          * association, there's no need to do anything, just store
2461          * the new value until we associate.
2462          */
2463         if (!sdata->u.mgd.associated ||
2464             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2465                 return 0;
2466
2467         ap = sdata->u.mgd.associated->bssid;
2468
2469         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2470                 if (sdata->u.mgd.powersave)
2471                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2472                 else
2473                         smps_mode = IEEE80211_SMPS_OFF;
2474         }
2475
2476         /* send SM PS frame to AP */
2477         err = ieee80211_send_smps_action(sdata, smps_mode,
2478                                          ap, ap);
2479         if (err)
2480                 sdata->u.mgd.req_smps = old_req;
2481
2482         return err;
2483 }
2484
2485 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2486                                     bool enabled, int timeout)
2487 {
2488         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2489         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2490
2491         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2492             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2493                 return -EOPNOTSUPP;
2494
2495         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2496                 return -EOPNOTSUPP;
2497
2498         if (enabled == sdata->u.mgd.powersave &&
2499             timeout == local->dynamic_ps_forced_timeout)
2500                 return 0;
2501
2502         sdata->u.mgd.powersave = enabled;
2503         local->dynamic_ps_forced_timeout = timeout;
2504
2505         /* no change, but if automatic follow powersave */
2506         sdata_lock(sdata);
2507         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2508         sdata_unlock(sdata);
2509
2510         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2511                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2512
2513         ieee80211_recalc_ps(local, -1);
2514         ieee80211_recalc_ps_vif(sdata);
2515
2516         return 0;
2517 }
2518
2519 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2520                                          struct net_device *dev,
2521                                          s32 rssi_thold, u32 rssi_hyst)
2522 {
2523         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2524         struct ieee80211_vif *vif = &sdata->vif;
2525         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2526
2527         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2528             rssi_hyst == bss_conf->cqm_rssi_hyst)
2529                 return 0;
2530
2531         bss_conf->cqm_rssi_thold = rssi_thold;
2532         bss_conf->cqm_rssi_hyst = rssi_hyst;
2533
2534         /* tell the driver upon association, unless already associated */
2535         if (sdata->u.mgd.associated &&
2536             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2537                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2538
2539         return 0;
2540 }
2541
2542 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2543                                       struct net_device *dev,
2544                                       const u8 *addr,
2545                                       const struct cfg80211_bitrate_mask *mask)
2546 {
2547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2548         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2549         int i, ret;
2550
2551         if (!ieee80211_sdata_running(sdata))
2552                 return -ENETDOWN;
2553
2554         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2555                 ret = drv_set_bitrate_mask(local, sdata, mask);
2556                 if (ret)
2557                         return ret;
2558         }
2559
2560         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2561                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2562                 int j;
2563
2564                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2565                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2566                        sizeof(mask->control[i].mcs));
2567
2568                 sdata->rc_has_mcs_mask[i] = false;
2569                 if (!sband)
2570                         continue;
2571
2572                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2573                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2574                                 sdata->rc_has_mcs_mask[i] = true;
2575                                 break;
2576                         }
2577         }
2578
2579         return 0;
2580 }
2581
2582 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2583                                     struct ieee80211_sub_if_data *sdata,
2584                                     struct ieee80211_channel *channel,
2585                                     unsigned int duration, u64 *cookie,
2586                                     struct sk_buff *txskb,
2587                                     enum ieee80211_roc_type type)
2588 {
2589         struct ieee80211_roc_work *roc, *tmp;
2590         bool queued = false;
2591         int ret;
2592
2593         lockdep_assert_held(&local->mtx);
2594
2595         if (local->use_chanctx && !local->ops->remain_on_channel)
2596                 return -EOPNOTSUPP;
2597
2598         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2599         if (!roc)
2600                 return -ENOMEM;
2601
2602         roc->chan = channel;
2603         roc->duration = duration;
2604         roc->req_duration = duration;
2605         roc->frame = txskb;
2606         roc->type = type;
2607         roc->mgmt_tx_cookie = (unsigned long)txskb;
2608         roc->sdata = sdata;
2609         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2610         INIT_LIST_HEAD(&roc->dependents);
2611
2612         /* if there's one pending or we're scanning, queue this one */
2613         if (!list_empty(&local->roc_list) ||
2614             local->scanning || local->radar_detect_enabled)
2615                 goto out_check_combine;
2616
2617         /* if not HW assist, just queue & schedule work */
2618         if (!local->ops->remain_on_channel) {
2619                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2620                 goto out_queue;
2621         }
2622
2623         /* otherwise actually kick it off here (for error handling) */
2624
2625         /*
2626          * If the duration is zero, then the driver
2627          * wouldn't actually do anything. Set it to
2628          * 10 for now.
2629          *
2630          * TODO: cancel the off-channel operation
2631          *       when we get the SKB's TX status and
2632          *       the wait time was zero before.
2633          */
2634         if (!duration)
2635                 duration = 10;
2636
2637         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2638         if (ret) {
2639                 kfree(roc);
2640                 return ret;
2641         }
2642
2643         roc->started = true;
2644         goto out_queue;
2645
2646  out_check_combine:
2647         list_for_each_entry(tmp, &local->roc_list, list) {
2648                 if (tmp->chan != channel || tmp->sdata != sdata)
2649                         continue;
2650
2651                 /*
2652                  * Extend this ROC if possible:
2653                  *
2654                  * If it hasn't started yet, just increase the duration
2655                  * and add the new one to the list of dependents.
2656                  * If the type of the new ROC has higher priority, modify the
2657                  * type of the previous one to match that of the new one.
2658                  */
2659                 if (!tmp->started) {
2660                         list_add_tail(&roc->list, &tmp->dependents);
2661                         tmp->duration = max(tmp->duration, roc->duration);
2662                         tmp->type = max(tmp->type, roc->type);
2663                         queued = true;
2664                         break;
2665                 }
2666
2667                 /* If it has already started, it's more difficult ... */
2668                 if (local->ops->remain_on_channel) {
2669                         unsigned long j = jiffies;
2670
2671                         /*
2672                          * In the offloaded ROC case, if it hasn't begun, add
2673                          * this new one to the dependent list to be handled
2674                          * when the master one begins. If it has begun,
2675                          * check that there's still a minimum time left and
2676                          * if so, start this one, transmitting the frame, but
2677                          * add it to the list directly after this one with
2678                          * a reduced time so we'll ask the driver to execute
2679                          * it right after finishing the previous one, in the
2680                          * hope that it'll also be executed right afterwards,
2681                          * effectively extending the old one.
2682                          * If there's no minimum time left, just add it to the
2683                          * normal list.
2684                          * TODO: the ROC type is ignored here, assuming that it
2685                          * is better to immediately use the current ROC.
2686                          */
2687                         if (!tmp->hw_begun) {
2688                                 list_add_tail(&roc->list, &tmp->dependents);
2689                                 queued = true;
2690                                 break;
2691                         }
2692
2693                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2694                                         tmp->hw_start_time +
2695                                         msecs_to_jiffies(tmp->duration))) {
2696                                 int new_dur;
2697
2698                                 ieee80211_handle_roc_started(roc);
2699
2700                                 new_dur = roc->duration -
2701                                           jiffies_to_msecs(tmp->hw_start_time +
2702                                                            msecs_to_jiffies(
2703                                                                 tmp->duration) -
2704                                                            j);
2705
2706                                 if (new_dur > 0) {
2707                                         /* add right after tmp */
2708                                         list_add(&roc->list, &tmp->list);
2709                                 } else {
2710                                         list_add_tail(&roc->list,
2711                                                       &tmp->dependents);
2712                                 }
2713                                 queued = true;
2714                         }
2715                 } else if (del_timer_sync(&tmp->work.timer)) {
2716                         unsigned long new_end;
2717
2718                         /*
2719                          * In the software ROC case, cancel the timer, if
2720                          * that fails then the finish work is already
2721                          * queued/pending and thus we queue the new ROC
2722                          * normally, if that succeeds then we can extend
2723                          * the timer duration and TX the frame (if any.)
2724                          */
2725
2726                         list_add_tail(&roc->list, &tmp->dependents);
2727                         queued = true;
2728
2729                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2730
2731                         /* ok, it was started & we canceled timer */
2732                         if (time_after(new_end, tmp->work.timer.expires))
2733                                 mod_timer(&tmp->work.timer, new_end);
2734                         else
2735                                 add_timer(&tmp->work.timer);
2736
2737                         ieee80211_handle_roc_started(roc);
2738                 }
2739                 break;
2740         }
2741
2742  out_queue:
2743         if (!queued)
2744                 list_add_tail(&roc->list, &local->roc_list);
2745
2746         /*
2747          * cookie is either the roc cookie (for normal roc)
2748          * or the SKB (for mgmt TX)
2749          */
2750         if (!txskb) {
2751                 /* local->mtx protects this */
2752                 local->roc_cookie_counter++;
2753                 roc->cookie = local->roc_cookie_counter;
2754                 /* wow, you wrapped 64 bits ... more likely a bug */
2755                 if (WARN_ON(roc->cookie == 0)) {
2756                         roc->cookie = 1;
2757                         local->roc_cookie_counter++;
2758                 }
2759                 *cookie = roc->cookie;
2760         } else {
2761                 *cookie = (unsigned long)txskb;
2762         }
2763
2764         return 0;
2765 }
2766
2767 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2768                                        struct wireless_dev *wdev,
2769                                        struct ieee80211_channel *chan,
2770                                        unsigned int duration,
2771                                        u64 *cookie)
2772 {
2773         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2774         struct ieee80211_local *local = sdata->local;
2775         int ret;
2776
2777         mutex_lock(&local->mtx);
2778         ret = ieee80211_start_roc_work(local, sdata, chan,
2779                                        duration, cookie, NULL,
2780                                        IEEE80211_ROC_TYPE_NORMAL);
2781         mutex_unlock(&local->mtx);
2782
2783         return ret;
2784 }
2785
2786 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2787                                 u64 cookie, bool mgmt_tx)
2788 {
2789         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2790         int ret;
2791
2792         mutex_lock(&local->mtx);
2793         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2794                 struct ieee80211_roc_work *dep, *tmp2;
2795
2796                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2797                         if (!mgmt_tx && dep->cookie != cookie)
2798                                 continue;
2799                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2800                                 continue;
2801                         /* found dependent item -- just remove it */
2802                         list_del(&dep->list);
2803                         mutex_unlock(&local->mtx);
2804
2805                         ieee80211_roc_notify_destroy(dep, true);
2806                         return 0;
2807                 }
2808
2809                 if (!mgmt_tx && roc->cookie != cookie)
2810                         continue;
2811                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2812                         continue;
2813
2814                 found = roc;
2815                 break;
2816         }
2817
2818         if (!found) {
2819                 mutex_unlock(&local->mtx);
2820                 return -ENOENT;
2821         }
2822
2823         /*
2824          * We found the item to cancel, so do that. Note that it
2825          * may have dependents, which we also cancel (and send
2826          * the expired signal for.) Not doing so would be quite
2827          * tricky here, but we may need to fix it later.
2828          */
2829
2830         if (local->ops->remain_on_channel) {
2831                 if (found->started) {
2832                         ret = drv_cancel_remain_on_channel(local);
2833                         if (WARN_ON_ONCE(ret)) {
2834                                 mutex_unlock(&local->mtx);
2835                                 return ret;
2836                         }
2837                 }
2838
2839                 list_del(&found->list);
2840
2841                 if (found->started)
2842                         ieee80211_start_next_roc(local);
2843                 mutex_unlock(&local->mtx);
2844
2845                 ieee80211_roc_notify_destroy(found, true);
2846         } else {
2847                 /* work may be pending so use it all the time */
2848                 found->abort = true;
2849                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2850
2851                 mutex_unlock(&local->mtx);
2852
2853                 /* work will clean up etc */
2854                 flush_delayed_work(&found->work);
2855                 WARN_ON(!found->to_be_freed);
2856                 kfree(found);
2857         }
2858
2859         return 0;
2860 }
2861
2862 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2863                                               struct wireless_dev *wdev,
2864                                               u64 cookie)
2865 {
2866         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2867         struct ieee80211_local *local = sdata->local;
2868
2869         return ieee80211_cancel_roc(local, cookie, false);
2870 }
2871
2872 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2873                                            struct net_device *dev,
2874                                            struct cfg80211_chan_def *chandef)
2875 {
2876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2877         struct ieee80211_local *local = sdata->local;
2878         unsigned long timeout;
2879         int err;
2880
2881         if (!list_empty(&local->roc_list) || local->scanning)
2882                 return -EBUSY;
2883
2884         /* whatever, but channel contexts should not complain about that one */
2885         sdata->smps_mode = IEEE80211_SMPS_OFF;
2886         sdata->needed_rx_chains = local->rx_chains;
2887         sdata->radar_required = true;
2888
2889         mutex_lock(&local->iflist_mtx);
2890         err = ieee80211_vif_use_channel(sdata, chandef,
2891                                         IEEE80211_CHANCTX_SHARED);
2892         mutex_unlock(&local->iflist_mtx);
2893         if (err)
2894                 return err;
2895
2896         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2897         ieee80211_queue_delayed_work(&sdata->local->hw,
2898                                      &sdata->dfs_cac_timer_work, timeout);
2899
2900         return 0;
2901 }
2902
2903 static struct cfg80211_beacon_data *
2904 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2905 {
2906         struct cfg80211_beacon_data *new_beacon;
2907         u8 *pos;
2908         int len;
2909
2910         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2911               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2912               beacon->probe_resp_len;
2913
2914         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2915         if (!new_beacon)
2916                 return NULL;
2917
2918         pos = (u8 *)(new_beacon + 1);
2919         if (beacon->head_len) {
2920                 new_beacon->head_len = beacon->head_len;
2921                 new_beacon->head = pos;
2922                 memcpy(pos, beacon->head, beacon->head_len);
2923                 pos += beacon->head_len;
2924         }
2925         if (beacon->tail_len) {
2926                 new_beacon->tail_len = beacon->tail_len;
2927                 new_beacon->tail = pos;
2928                 memcpy(pos, beacon->tail, beacon->tail_len);
2929                 pos += beacon->tail_len;
2930         }
2931         if (beacon->beacon_ies_len) {
2932                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2933                 new_beacon->beacon_ies = pos;
2934                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2935                 pos += beacon->beacon_ies_len;
2936         }
2937         if (beacon->proberesp_ies_len) {
2938                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2939                 new_beacon->proberesp_ies = pos;
2940                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2941                 pos += beacon->proberesp_ies_len;
2942         }
2943         if (beacon->assocresp_ies_len) {
2944                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2945                 new_beacon->assocresp_ies = pos;
2946                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2947                 pos += beacon->assocresp_ies_len;
2948         }
2949         if (beacon->probe_resp_len) {
2950                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2951                 beacon->probe_resp = pos;
2952                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2953                 pos += beacon->probe_resp_len;
2954         }
2955
2956         return new_beacon;
2957 }
2958
2959 void ieee80211_csa_finalize_work(struct work_struct *work)
2960 {
2961         struct ieee80211_sub_if_data *sdata =
2962                 container_of(work, struct ieee80211_sub_if_data,
2963                              csa_finalize_work);
2964         struct ieee80211_local *local = sdata->local;
2965         int err, changed = 0;
2966
2967         if (!ieee80211_sdata_running(sdata))
2968                 return;
2969
2970         sdata->radar_required = sdata->csa_radar_required;
2971         err = ieee80211_vif_change_channel(sdata, &local->csa_chandef,
2972                                            &changed);
2973         if (WARN_ON(err < 0))
2974                 return;
2975
2976         if (!local->use_chanctx) {
2977                 local->_oper_chandef = local->csa_chandef;
2978                 ieee80211_hw_config(local, 0);
2979         }
2980
2981         ieee80211_bss_info_change_notify(sdata, changed);
2982
2983         switch (sdata->vif.type) {
2984         case NL80211_IFTYPE_AP:
2985                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
2986                 if (err < 0)
2987                         return;
2988                 changed |= err;
2989                 kfree(sdata->u.ap.next_beacon);
2990                 sdata->u.ap.next_beacon = NULL;
2991
2992                 ieee80211_bss_info_change_notify(sdata, err);
2993                 break;
2994         case NL80211_IFTYPE_ADHOC:
2995                 ieee80211_ibss_finish_csa(sdata);
2996                 break;
2997 #ifdef CONFIG_MAC80211_MESH
2998         case NL80211_IFTYPE_MESH_POINT:
2999                 err = ieee80211_mesh_finish_csa(sdata);
3000                 if (err < 0)
3001                         return;
3002                 break;
3003 #endif
3004         default:
3005                 WARN_ON(1);
3006                 return;
3007         }
3008         sdata->vif.csa_active = false;
3009
3010         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3011                                         IEEE80211_MAX_QUEUE_MAP,
3012                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3013
3014         cfg80211_ch_switch_notify(sdata->dev, &local->csa_chandef);
3015 }
3016
3017 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3018                                     struct cfg80211_csa_settings *params)
3019 {
3020         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3021         struct ieee80211_local *local = sdata->local;
3022         struct ieee80211_chanctx_conf *chanctx_conf;
3023         struct ieee80211_chanctx *chanctx;
3024         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3025         int err, num_chanctx;
3026
3027         if (!list_empty(&local->roc_list) || local->scanning)
3028                 return -EBUSY;
3029
3030         if (sdata->wdev.cac_started)
3031                 return -EBUSY;
3032
3033         if (cfg80211_chandef_identical(&params->chandef,
3034                                        &sdata->vif.bss_conf.chandef))
3035                 return -EINVAL;
3036
3037         rcu_read_lock();
3038         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3039         if (!chanctx_conf) {
3040                 rcu_read_unlock();
3041                 return -EBUSY;
3042         }
3043
3044         /* don't handle for multi-VIF cases */
3045         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3046         if (chanctx->refcount > 1) {
3047                 rcu_read_unlock();
3048                 return -EBUSY;
3049         }
3050         num_chanctx = 0;
3051         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3052                 num_chanctx++;
3053         rcu_read_unlock();
3054
3055         if (num_chanctx > 1)
3056                 return -EBUSY;
3057
3058         /* don't allow another channel switch if one is already active. */
3059         if (sdata->vif.csa_active)
3060                 return -EBUSY;
3061
3062         switch (sdata->vif.type) {
3063         case NL80211_IFTYPE_AP:
3064                 sdata->csa_counter_offset_beacon =
3065                         params->counter_offset_beacon;
3066                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3067                 sdata->u.ap.next_beacon =
3068                         cfg80211_beacon_dup(&params->beacon_after);
3069                 if (!sdata->u.ap.next_beacon)
3070                         return -ENOMEM;
3071
3072                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3073                 if (err < 0) {
3074                         kfree(sdata->u.ap.next_beacon);
3075                         return err;
3076                 }
3077                 break;
3078         case NL80211_IFTYPE_ADHOC:
3079                 if (!sdata->vif.bss_conf.ibss_joined)
3080                         return -EINVAL;
3081
3082                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3083                         return -EINVAL;
3084
3085                 switch (params->chandef.width) {
3086                 case NL80211_CHAN_WIDTH_40:
3087                         if (cfg80211_get_chandef_type(&params->chandef) !=
3088                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3089                                 return -EINVAL;
3090                 case NL80211_CHAN_WIDTH_5:
3091                 case NL80211_CHAN_WIDTH_10:
3092                 case NL80211_CHAN_WIDTH_20_NOHT:
3093                 case NL80211_CHAN_WIDTH_20:
3094                         break;
3095                 default:
3096                         return -EINVAL;
3097                 }
3098
3099                 /* changes into another band are not supported */
3100                 if (sdata->u.ibss.chandef.chan->band !=
3101                     params->chandef.chan->band)
3102                         return -EINVAL;
3103
3104                 err = ieee80211_ibss_csa_beacon(sdata, params);
3105                 if (err < 0)
3106                         return err;
3107                 break;
3108 #ifdef CONFIG_MAC80211_MESH
3109         case NL80211_IFTYPE_MESH_POINT:
3110                 ifmsh = &sdata->u.mesh;
3111
3112                 if (!ifmsh->mesh_id)
3113                         return -EINVAL;
3114
3115                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3116                         return -EINVAL;
3117
3118                 /* changes into another band are not supported */
3119                 if (sdata->vif.bss_conf.chandef.chan->band !=
3120                     params->chandef.chan->band)
3121                         return -EINVAL;
3122
3123                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3124                 if (err < 0)
3125                         return err;
3126                 break;
3127 #endif
3128         default:
3129                 return -EOPNOTSUPP;
3130         }
3131
3132         sdata->csa_radar_required = params->radar_required;
3133
3134         if (params->block_tx)
3135                 ieee80211_stop_queues_by_reason(&local->hw,
3136                                 IEEE80211_MAX_QUEUE_MAP,
3137                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3138
3139         local->csa_chandef = params->chandef;
3140         sdata->vif.csa_active = true;
3141
3142         ieee80211_bss_info_change_notify(sdata, err);
3143         drv_channel_switch_beacon(sdata, &params->chandef);
3144
3145         return 0;
3146 }
3147
3148 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3149                              struct ieee80211_channel *chan, bool offchan,
3150                              unsigned int wait, const u8 *buf, size_t len,
3151                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
3152 {
3153         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3154         struct ieee80211_local *local = sdata->local;
3155         struct sk_buff *skb;
3156         struct sta_info *sta;
3157         const struct ieee80211_mgmt *mgmt = (void *)buf;
3158         bool need_offchan = false;
3159         u32 flags;
3160         int ret;
3161
3162         if (dont_wait_for_ack)
3163                 flags = IEEE80211_TX_CTL_NO_ACK;
3164         else
3165                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3166                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3167
3168         if (no_cck)
3169                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3170
3171         switch (sdata->vif.type) {
3172         case NL80211_IFTYPE_ADHOC:
3173                 if (!sdata->vif.bss_conf.ibss_joined)
3174                         need_offchan = true;
3175                 /* fall through */
3176 #ifdef CONFIG_MAC80211_MESH
3177         case NL80211_IFTYPE_MESH_POINT:
3178                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3179                     !sdata->u.mesh.mesh_id_len)
3180                         need_offchan = true;
3181                 /* fall through */
3182 #endif
3183         case NL80211_IFTYPE_AP:
3184         case NL80211_IFTYPE_AP_VLAN:
3185         case NL80211_IFTYPE_P2P_GO:
3186                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3187                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3188                     !rcu_access_pointer(sdata->bss->beacon))
3189                         need_offchan = true;
3190                 if (!ieee80211_is_action(mgmt->frame_control) ||
3191                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3192                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3193                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3194                         break;
3195                 rcu_read_lock();
3196                 sta = sta_info_get(sdata, mgmt->da);
3197                 rcu_read_unlock();
3198                 if (!sta)
3199                         return -ENOLINK;
3200                 break;
3201         case NL80211_IFTYPE_STATION:
3202         case NL80211_IFTYPE_P2P_CLIENT:
3203                 if (!sdata->u.mgd.associated)
3204                         need_offchan = true;
3205                 break;
3206         case NL80211_IFTYPE_P2P_DEVICE:
3207                 need_offchan = true;
3208                 break;
3209         default:
3210                 return -EOPNOTSUPP;
3211         }
3212
3213         /* configurations requiring offchan cannot work if no channel has been
3214          * specified
3215          */
3216         if (need_offchan && !chan)
3217                 return -EINVAL;
3218
3219         mutex_lock(&local->mtx);
3220
3221         /* Check if the operating channel is the requested channel */
3222         if (!need_offchan) {
3223                 struct ieee80211_chanctx_conf *chanctx_conf;
3224
3225                 rcu_read_lock();
3226                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3227
3228                 if (chanctx_conf) {
3229                         need_offchan = chan && (chan != chanctx_conf->def.chan);
3230                 } else if (!chan) {
3231                         ret = -EINVAL;
3232                         rcu_read_unlock();
3233                         goto out_unlock;
3234                 } else {
3235                         need_offchan = true;
3236                 }
3237                 rcu_read_unlock();
3238         }
3239
3240         if (need_offchan && !offchan) {
3241                 ret = -EBUSY;
3242                 goto out_unlock;
3243         }
3244
3245         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
3246         if (!skb) {
3247                 ret = -ENOMEM;
3248                 goto out_unlock;
3249         }
3250         skb_reserve(skb, local->hw.extra_tx_headroom);
3251
3252         memcpy(skb_put(skb, len), buf, len);
3253
3254         IEEE80211_SKB_CB(skb)->flags = flags;
3255
3256         skb->dev = sdata->dev;
3257
3258         if (!need_offchan) {
3259                 *cookie = (unsigned long) skb;
3260                 ieee80211_tx_skb(sdata, skb);
3261                 ret = 0;
3262                 goto out_unlock;
3263         }
3264
3265         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3266                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3267         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3268                 IEEE80211_SKB_CB(skb)->hw_queue =
3269                         local->hw.offchannel_tx_hw_queue;
3270
3271         /* This will handle all kinds of coalescing and immediate TX */
3272         ret = ieee80211_start_roc_work(local, sdata, chan,
3273                                        wait, cookie, skb,
3274                                        IEEE80211_ROC_TYPE_MGMT_TX);
3275         if (ret)
3276                 kfree_skb(skb);
3277  out_unlock:
3278         mutex_unlock(&local->mtx);
3279         return ret;
3280 }
3281
3282 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3283                                          struct wireless_dev *wdev,
3284                                          u64 cookie)
3285 {
3286         struct ieee80211_local *local = wiphy_priv(wiphy);
3287
3288         return ieee80211_cancel_roc(local, cookie, true);
3289 }
3290
3291 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3292                                           struct wireless_dev *wdev,
3293                                           u16 frame_type, bool reg)
3294 {
3295         struct ieee80211_local *local = wiphy_priv(wiphy);
3296
3297         switch (frame_type) {
3298         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3299                 if (reg)
3300                         local->probe_req_reg++;
3301                 else
3302                         local->probe_req_reg--;
3303
3304                 if (!local->open_count)
3305                         break;
3306
3307                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3308                 break;
3309         default:
3310                 break;
3311         }
3312 }
3313
3314 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3315 {
3316         struct ieee80211_local *local = wiphy_priv(wiphy);
3317
3318         if (local->started)
3319                 return -EOPNOTSUPP;
3320
3321         return drv_set_antenna(local, tx_ant, rx_ant);
3322 }
3323
3324 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3325 {
3326         struct ieee80211_local *local = wiphy_priv(wiphy);
3327
3328         return drv_get_antenna(local, tx_ant, rx_ant);
3329 }
3330
3331 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3332 {
3333         struct ieee80211_local *local = wiphy_priv(wiphy);
3334
3335         return drv_set_ringparam(local, tx, rx);
3336 }
3337
3338 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3339                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3340 {
3341         struct ieee80211_local *local = wiphy_priv(wiphy);
3342
3343         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3344 }
3345
3346 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3347                                     struct net_device *dev,
3348                                     struct cfg80211_gtk_rekey_data *data)
3349 {
3350         struct ieee80211_local *local = wiphy_priv(wiphy);
3351         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3352
3353         if (!local->ops->set_rekey_data)
3354                 return -EOPNOTSUPP;
3355
3356         drv_set_rekey_data(local, sdata, data);
3357
3358         return 0;
3359 }
3360
3361 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3362 {
3363         u8 *pos = (void *)skb_put(skb, 7);
3364
3365         *pos++ = WLAN_EID_EXT_CAPABILITY;
3366         *pos++ = 5; /* len */
3367         *pos++ = 0x0;
3368         *pos++ = 0x0;
3369         *pos++ = 0x0;
3370         *pos++ = 0x0;
3371         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3372 }
3373
3374 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3375 {
3376         struct ieee80211_local *local = sdata->local;
3377         u16 capab;
3378
3379         capab = 0;
3380         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3381                 return capab;
3382
3383         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3384                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3385         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3386                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3387
3388         return capab;
3389 }
3390
3391 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3392                                        u8 *peer, u8 *bssid)
3393 {
3394         struct ieee80211_tdls_lnkie *lnkid;
3395
3396         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3397
3398         lnkid->ie_type = WLAN_EID_LINK_ID;
3399         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3400
3401         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3402         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3403         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3404 }
3405
3406 static int
3407 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3408                                u8 *peer, u8 action_code, u8 dialog_token,
3409                                u16 status_code, struct sk_buff *skb)
3410 {
3411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3412         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3413         struct ieee80211_tdls_data *tf;
3414
3415         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3416
3417         memcpy(tf->da, peer, ETH_ALEN);
3418         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3419         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3420         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3421
3422         switch (action_code) {
3423         case WLAN_TDLS_SETUP_REQUEST:
3424                 tf->category = WLAN_CATEGORY_TDLS;
3425                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3426
3427                 skb_put(skb, sizeof(tf->u.setup_req));
3428                 tf->u.setup_req.dialog_token = dialog_token;
3429                 tf->u.setup_req.capability =
3430                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3431
3432                 ieee80211_add_srates_ie(sdata, skb, false, band);
3433                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3434                 ieee80211_tdls_add_ext_capab(skb);
3435                 break;
3436         case WLAN_TDLS_SETUP_RESPONSE:
3437                 tf->category = WLAN_CATEGORY_TDLS;
3438                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3439
3440                 skb_put(skb, sizeof(tf->u.setup_resp));
3441                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3442                 tf->u.setup_resp.dialog_token = dialog_token;
3443                 tf->u.setup_resp.capability =
3444                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3445
3446                 ieee80211_add_srates_ie(sdata, skb, false, band);
3447                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3448                 ieee80211_tdls_add_ext_capab(skb);
3449                 break;
3450         case WLAN_TDLS_SETUP_CONFIRM:
3451                 tf->category = WLAN_CATEGORY_TDLS;
3452                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3453
3454                 skb_put(skb, sizeof(tf->u.setup_cfm));
3455                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3456                 tf->u.setup_cfm.dialog_token = dialog_token;
3457                 break;
3458         case WLAN_TDLS_TEARDOWN:
3459                 tf->category = WLAN_CATEGORY_TDLS;
3460                 tf->action_code = WLAN_TDLS_TEARDOWN;
3461
3462                 skb_put(skb, sizeof(tf->u.teardown));
3463                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3464                 break;
3465         case WLAN_TDLS_DISCOVERY_REQUEST:
3466                 tf->category = WLAN_CATEGORY_TDLS;
3467                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3468
3469                 skb_put(skb, sizeof(tf->u.discover_req));
3470                 tf->u.discover_req.dialog_token = dialog_token;
3471                 break;
3472         default:
3473                 return -EINVAL;
3474         }
3475
3476         return 0;
3477 }
3478
3479 static int
3480 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3481                            u8 *peer, u8 action_code, u8 dialog_token,
3482                            u16 status_code, struct sk_buff *skb)
3483 {
3484         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3485         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3486         struct ieee80211_mgmt *mgmt;
3487
3488         mgmt = (void *)skb_put(skb, 24);
3489         memset(mgmt, 0, 24);
3490         memcpy(mgmt->da, peer, ETH_ALEN);
3491         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3492         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3493
3494         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3495                                           IEEE80211_STYPE_ACTION);
3496
3497         switch (action_code) {
3498         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3499                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3500                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3501                 mgmt->u.action.u.tdls_discover_resp.action_code =
3502                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3503                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3504                         dialog_token;
3505                 mgmt->u.action.u.tdls_discover_resp.capability =
3506                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3507
3508                 ieee80211_add_srates_ie(sdata, skb, false, band);
3509                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3510                 ieee80211_tdls_add_ext_capab(skb);
3511                 break;
3512         default:
3513                 return -EINVAL;
3514         }
3515
3516         return 0;
3517 }
3518
3519 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3520                                u8 *peer, u8 action_code, u8 dialog_token,
3521                                u16 status_code, const u8 *extra_ies,
3522                                size_t extra_ies_len)
3523 {
3524         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3525         struct ieee80211_local *local = sdata->local;
3526         struct sk_buff *skb = NULL;
3527         bool send_direct;
3528         int ret;
3529
3530         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3531                 return -ENOTSUPP;
3532
3533         /* make sure we are in managed mode, and associated */
3534         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3535             !sdata->u.mgd.associated)
3536                 return -EINVAL;
3537
3538         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3539                  action_code, peer);
3540
3541         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3542                             max(sizeof(struct ieee80211_mgmt),
3543                                 sizeof(struct ieee80211_tdls_data)) +
3544                             50 + /* supported rates */
3545                             7 + /* ext capab */
3546                             extra_ies_len +
3547                             sizeof(struct ieee80211_tdls_lnkie));
3548         if (!skb)
3549                 return -ENOMEM;
3550
3551         skb_reserve(skb, local->hw.extra_tx_headroom);
3552
3553         switch (action_code) {
3554         case WLAN_TDLS_SETUP_REQUEST:
3555         case WLAN_TDLS_SETUP_RESPONSE:
3556         case WLAN_TDLS_SETUP_CONFIRM:
3557         case WLAN_TDLS_TEARDOWN:
3558         case WLAN_TDLS_DISCOVERY_REQUEST:
3559                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3560                                                      action_code, dialog_token,
3561                                                      status_code, skb);
3562                 send_direct = false;
3563                 break;
3564         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3565                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3566                                                  dialog_token, status_code,
3567                                                  skb);
3568                 send_direct = true;
3569                 break;
3570         default:
3571                 ret = -ENOTSUPP;
3572                 break;
3573         }
3574
3575         if (ret < 0)
3576                 goto fail;
3577
3578         if (extra_ies_len)
3579                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3580
3581         /* the TDLS link IE is always added last */
3582         switch (action_code) {
3583         case WLAN_TDLS_SETUP_REQUEST:
3584         case WLAN_TDLS_SETUP_CONFIRM:
3585         case WLAN_TDLS_TEARDOWN:
3586         case WLAN_TDLS_DISCOVERY_REQUEST:
3587                 /* we are the initiator */
3588                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3589                                            sdata->u.mgd.bssid);
3590                 break;
3591         case WLAN_TDLS_SETUP_RESPONSE:
3592         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3593                 /* we are the responder */
3594                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3595                                            sdata->u.mgd.bssid);
3596                 break;
3597         default:
3598                 ret = -ENOTSUPP;
3599                 goto fail;
3600         }
3601
3602         if (send_direct) {
3603                 ieee80211_tx_skb(sdata, skb);
3604                 return 0;
3605         }
3606
3607         /*
3608          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3609          * we should default to AC_VI.
3610          */
3611         switch (action_code) {
3612         case WLAN_TDLS_SETUP_REQUEST:
3613         case WLAN_TDLS_SETUP_RESPONSE:
3614                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3615                 skb->priority = 2;
3616                 break;
3617         default:
3618                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3619                 skb->priority = 5;
3620                 break;
3621         }
3622
3623         /* disable bottom halves when entering the Tx path */
3624         local_bh_disable();
3625         ret = ieee80211_subif_start_xmit(skb, dev);
3626         local_bh_enable();
3627
3628         return ret;
3629
3630 fail:
3631         dev_kfree_skb(skb);
3632         return ret;
3633 }
3634
3635 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3636                                u8 *peer, enum nl80211_tdls_operation oper)
3637 {
3638         struct sta_info *sta;
3639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3640
3641         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3642                 return -ENOTSUPP;
3643
3644         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3645                 return -EINVAL;
3646
3647         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3648
3649         switch (oper) {
3650         case NL80211_TDLS_ENABLE_LINK:
3651                 rcu_read_lock();
3652                 sta = sta_info_get(sdata, peer);
3653                 if (!sta) {
3654                         rcu_read_unlock();
3655                         return -ENOLINK;
3656                 }
3657
3658                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3659                 rcu_read_unlock();
3660                 break;
3661         case NL80211_TDLS_DISABLE_LINK:
3662                 return sta_info_destroy_addr(sdata, peer);
3663         case NL80211_TDLS_TEARDOWN:
3664         case NL80211_TDLS_SETUP:
3665         case NL80211_TDLS_DISCOVERY_REQ:
3666                 /* We don't support in-driver setup/teardown/discovery */
3667                 return -ENOTSUPP;
3668         default:
3669                 return -ENOTSUPP;
3670         }
3671
3672         return 0;
3673 }
3674
3675 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3676                                   const u8 *peer, u64 *cookie)
3677 {
3678         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3679         struct ieee80211_local *local = sdata->local;
3680         struct ieee80211_qos_hdr *nullfunc;
3681         struct sk_buff *skb;
3682         int size = sizeof(*nullfunc);
3683         __le16 fc;
3684         bool qos;
3685         struct ieee80211_tx_info *info;
3686         struct sta_info *sta;
3687         struct ieee80211_chanctx_conf *chanctx_conf;
3688         enum ieee80211_band band;
3689
3690         rcu_read_lock();
3691         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3692         if (WARN_ON(!chanctx_conf)) {
3693                 rcu_read_unlock();
3694                 return -EINVAL;
3695         }
3696         band = chanctx_conf->def.chan->band;
3697         sta = sta_info_get_bss(sdata, peer);
3698         if (sta) {
3699                 qos = test_sta_flag(sta, WLAN_STA_WME);
3700         } else {
3701                 rcu_read_unlock();
3702                 return -ENOLINK;
3703         }
3704
3705         if (qos) {
3706                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3707                                  IEEE80211_STYPE_QOS_NULLFUNC |
3708                                  IEEE80211_FCTL_FROMDS);
3709         } else {
3710                 size -= 2;
3711                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3712                                  IEEE80211_STYPE_NULLFUNC |
3713                                  IEEE80211_FCTL_FROMDS);
3714         }
3715
3716         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3717         if (!skb) {
3718                 rcu_read_unlock();
3719                 return -ENOMEM;
3720         }
3721
3722         skb->dev = dev;
3723
3724         skb_reserve(skb, local->hw.extra_tx_headroom);
3725
3726         nullfunc = (void *) skb_put(skb, size);
3727         nullfunc->frame_control = fc;
3728         nullfunc->duration_id = 0;
3729         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3730         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3731         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3732         nullfunc->seq_ctrl = 0;
3733
3734         info = IEEE80211_SKB_CB(skb);
3735
3736         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3737                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3738
3739         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3740         skb->priority = 7;
3741         if (qos)
3742                 nullfunc->qos_ctrl = cpu_to_le16(7);
3743
3744         local_bh_disable();
3745         ieee80211_xmit(sdata, skb, band);
3746         local_bh_enable();
3747         rcu_read_unlock();
3748
3749         *cookie = (unsigned long) skb;
3750         return 0;
3751 }
3752
3753 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3754                                      struct wireless_dev *wdev,
3755                                      struct cfg80211_chan_def *chandef)
3756 {
3757         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3758         struct ieee80211_local *local = wiphy_priv(wiphy);
3759         struct ieee80211_chanctx_conf *chanctx_conf;
3760         int ret = -ENODATA;
3761
3762         rcu_read_lock();
3763         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3764         if (chanctx_conf) {
3765                 *chandef = chanctx_conf->def;
3766                 ret = 0;
3767         } else if (local->open_count > 0 &&
3768                    local->open_count == local->monitors &&
3769                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3770                 if (local->use_chanctx)
3771                         *chandef = local->monitor_chandef;
3772                 else
3773                         *chandef = local->_oper_chandef;
3774                 ret = 0;
3775         }
3776         rcu_read_unlock();
3777
3778         return ret;
3779 }
3780
3781 #ifdef CONFIG_PM
3782 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3783 {
3784         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3785 }
3786 #endif
3787
3788 struct cfg80211_ops mac80211_config_ops = {
3789         .add_virtual_intf = ieee80211_add_iface,
3790         .del_virtual_intf = ieee80211_del_iface,
3791         .change_virtual_intf = ieee80211_change_iface,
3792         .start_p2p_device = ieee80211_start_p2p_device,
3793         .stop_p2p_device = ieee80211_stop_p2p_device,
3794         .add_key = ieee80211_add_key,
3795         .del_key = ieee80211_del_key,
3796         .get_key = ieee80211_get_key,
3797         .set_default_key = ieee80211_config_default_key,
3798         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3799         .start_ap = ieee80211_start_ap,
3800         .change_beacon = ieee80211_change_beacon,
3801         .stop_ap = ieee80211_stop_ap,
3802         .add_station = ieee80211_add_station,
3803         .del_station = ieee80211_del_station,
3804         .change_station = ieee80211_change_station,
3805         .get_station = ieee80211_get_station,
3806         .dump_station = ieee80211_dump_station,
3807         .dump_survey = ieee80211_dump_survey,
3808 #ifdef CONFIG_MAC80211_MESH
3809         .add_mpath = ieee80211_add_mpath,
3810         .del_mpath = ieee80211_del_mpath,
3811         .change_mpath = ieee80211_change_mpath,
3812         .get_mpath = ieee80211_get_mpath,
3813         .dump_mpath = ieee80211_dump_mpath,
3814         .update_mesh_config = ieee80211_update_mesh_config,
3815         .get_mesh_config = ieee80211_get_mesh_config,
3816         .join_mesh = ieee80211_join_mesh,
3817         .leave_mesh = ieee80211_leave_mesh,
3818 #endif
3819         .change_bss = ieee80211_change_bss,
3820         .set_txq_params = ieee80211_set_txq_params,
3821         .set_monitor_channel = ieee80211_set_monitor_channel,
3822         .suspend = ieee80211_suspend,
3823         .resume = ieee80211_resume,
3824         .scan = ieee80211_scan,
3825         .sched_scan_start = ieee80211_sched_scan_start,
3826         .sched_scan_stop = ieee80211_sched_scan_stop,
3827         .auth = ieee80211_auth,
3828         .assoc = ieee80211_assoc,
3829         .deauth = ieee80211_deauth,
3830         .disassoc = ieee80211_disassoc,
3831         .join_ibss = ieee80211_join_ibss,
3832         .leave_ibss = ieee80211_leave_ibss,
3833         .set_mcast_rate = ieee80211_set_mcast_rate,
3834         .set_wiphy_params = ieee80211_set_wiphy_params,
3835         .set_tx_power = ieee80211_set_tx_power,
3836         .get_tx_power = ieee80211_get_tx_power,
3837         .set_wds_peer = ieee80211_set_wds_peer,
3838         .rfkill_poll = ieee80211_rfkill_poll,
3839         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3840         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3841         .set_power_mgmt = ieee80211_set_power_mgmt,
3842         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3843         .remain_on_channel = ieee80211_remain_on_channel,
3844         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3845         .mgmt_tx = ieee80211_mgmt_tx,
3846         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3847         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3848         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3849         .set_antenna = ieee80211_set_antenna,
3850         .get_antenna = ieee80211_get_antenna,
3851         .set_ringparam = ieee80211_set_ringparam,
3852         .get_ringparam = ieee80211_get_ringparam,
3853         .set_rekey_data = ieee80211_set_rekey_data,
3854         .tdls_oper = ieee80211_tdls_oper,
3855         .tdls_mgmt = ieee80211_tdls_mgmt,
3856         .probe_client = ieee80211_probe_client,
3857         .set_noack_map = ieee80211_set_noack_map,
3858 #ifdef CONFIG_PM
3859         .set_wakeup = ieee80211_set_wakeup,
3860 #endif
3861         .get_et_sset_count = ieee80211_get_et_sset_count,
3862         .get_et_stats = ieee80211_get_et_stats,
3863         .get_et_strings = ieee80211_get_et_strings,
3864         .get_channel = ieee80211_cfg_get_channel,
3865         .start_radar_detection = ieee80211_start_radar_detection,
3866         .channel_switch = ieee80211_channel_switch,
3867 };