net/mac80211/cfg.c

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