Pileus Git - ~andy/linux/blob - 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 net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                               enum nl80211_iftype type,
  25                                               u32 *flags,
  26                                               struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct net_device *dev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &dev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return dev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  46 {
  47         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 if (ieee80211_vif_is_mesh(&sdata->vif))
 141                         sta = sta_info_get(sdata, mac_addr);
 142                 else
 143                         sta = sta_info_get_bss(sdata, mac_addr);
 144                 if (!sta) {
 145                         ieee80211_key_free(sdata->local, key);
 146                         err = -ENOENT;
 147                         goto out_unlock;
 148                 }
 149         }
 150
 151         err = ieee80211_key_link(key, sdata, sta);
 152         if (err)
 153                 ieee80211_key_free(sdata->local, key);
 154
 155  out_unlock:
 156         mutex_unlock(&sdata->local->sta_mtx);
 157
 158         return err;
 159 }
 160
 161 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 162                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 163 {
 164         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 165         struct ieee80211_local *local = sdata->local;
 166         struct sta_info *sta;
 167         struct ieee80211_key *key = NULL;
 168         int ret;
 169
 170         mutex_lock(&local->sta_mtx);
 171         mutex_lock(&local->key_mtx);
 172
 173         if (mac_addr) {
 174                 ret = -ENOENT;
 175
 176                 sta = sta_info_get_bss(sdata, mac_addr);
 177                 if (!sta)
 178                         goto out_unlock;
 179
 180                 if (pairwise)
 181                         key = key_mtx_dereference(local, sta->ptk);
 182                 else
 183                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 184         } else
 185                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 186
 187         if (!key) {
 188                 ret = -ENOENT;
 189                 goto out_unlock;
 190         }
 191
 192         __ieee80211_key_free(key);
 193
 194         ret = 0;
 195  out_unlock:
 196         mutex_unlock(&local->key_mtx);
 197         mutex_unlock(&local->sta_mtx);
 198
 199         return ret;
 200 }
 201
 202 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 203                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 204                              void *cookie,
 205                              void (*callback)(void *cookie,
 206                                               struct key_params *params))
 207 {
 208         struct ieee80211_sub_if_data *sdata;
 209         struct sta_info *sta = NULL;
 210         u8 seq[6] = {0};
 211         struct key_params params;
 212         struct ieee80211_key *key = NULL;
 213         u64 pn64;
 214         u32 iv32;
 215         u16 iv16;
 216         int err = -ENOENT;
 217
 218         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 219
 220         rcu_read_lock();
 221
 222         if (mac_addr) {
 223                 sta = sta_info_get_bss(sdata, mac_addr);
 224                 if (!sta)
 225                         goto out;
 226
 227                 if (pairwise)
 228                         key = rcu_dereference(sta->ptk);
 229                 else if (key_idx < NUM_DEFAULT_KEYS)
 230                         key = rcu_dereference(sta->gtk[key_idx]);
 231         } else
 232                 key = rcu_dereference(sdata->keys[key_idx]);
 233
 234         if (!key)
 235                 goto out;
 236
 237         memset(&params, 0, sizeof(params));
 238
 239         params.cipher = key->conf.cipher;
 240
 241         switch (key->conf.cipher) {
 242         case WLAN_CIPHER_SUITE_TKIP:
 243                 iv32 = key->u.tkip.tx.iv32;
 244                 iv16 = key->u.tkip.tx.iv16;
 245
 246                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 247                         drv_get_tkip_seq(sdata->local,
 248                                          key->conf.hw_key_idx,
 249                                          &iv32, &iv16);
 250
 251                 seq[0] = iv16 & 0xff;
 252                 seq[1] = (iv16 >> 8) & 0xff;
 253                 seq[2] = iv32 & 0xff;
 254                 seq[3] = (iv32 >> 8) & 0xff;
 255                 seq[4] = (iv32 >> 16) & 0xff;
 256                 seq[5] = (iv32 >> 24) & 0xff;
 257                 params.seq = seq;
 258                 params.seq_len = 6;
 259                 break;
 260         case WLAN_CIPHER_SUITE_CCMP:
 261                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 262                 seq[0] = pn64;
 263                 seq[1] = pn64 >> 8;
 264                 seq[2] = pn64 >> 16;
 265                 seq[3] = pn64 >> 24;
 266                 seq[4] = pn64 >> 32;
 267                 seq[5] = pn64 >> 40;
 268                 params.seq = seq;
 269                 params.seq_len = 6;
 270                 break;
 271         case WLAN_CIPHER_SUITE_AES_CMAC:
 272                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 273                 seq[0] = pn64;
 274                 seq[1] = pn64 >> 8;
 275                 seq[2] = pn64 >> 16;
 276                 seq[3] = pn64 >> 24;
 277                 seq[4] = pn64 >> 32;
 278                 seq[5] = pn64 >> 40;
 279                 params.seq = seq;
 280                 params.seq_len = 6;
 281                 break;
 282         }
 283
 284         params.key = key->conf.key;
 285         params.key_len = key->conf.keylen;
 286
 287         callback(cookie, &params);
 288         err = 0;
 289
 290  out:
 291         rcu_read_unlock();
 292         return err;
 293 }
 294
 295 static int ieee80211_config_default_key(struct wiphy *wiphy,
 296                                         struct net_device *dev,
 297                                         u8 key_idx, bool uni,
 298                                         bool multi)
 299 {
 300         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 301
 302         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 303
 304         return 0;
 305 }
 306
 307 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 308                                              struct net_device *dev,
 309                                              u8 key_idx)
 310 {
 311         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 312
 313         ieee80211_set_default_mgmt_key(sdata, key_idx);
 314
 315         return 0;
 316 }
 317
 318 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 319 {
 320         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 321                 struct ieee80211_supported_band *sband;
 322                 sband = sta->local->hw.wiphy->bands[
 323                                 sta->local->hw.conf.channel->band];
 324                 rate->legacy = sband->bitrates[idx].bitrate;
 325         } else
 326                 rate->mcs = idx;
 327 }
 328
 329 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 330 {
 331         struct ieee80211_sub_if_data *sdata = sta->sdata;
 332         struct timespec uptime;
 333
 334         sinfo->generation = sdata->local->sta_generation;
 335
 336         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 337                         STATION_INFO_RX_BYTES |
 338                         STATION_INFO_TX_BYTES |
 339                         STATION_INFO_RX_PACKETS |
 340                         STATION_INFO_TX_PACKETS |
 341                         STATION_INFO_TX_RETRIES |
 342                         STATION_INFO_TX_FAILED |
 343                         STATION_INFO_TX_BITRATE |
 344                         STATION_INFO_RX_BITRATE |
 345                         STATION_INFO_RX_DROP_MISC |
 346                         STATION_INFO_BSS_PARAM |
 347                         STATION_INFO_CONNECTED_TIME |
 348                         STATION_INFO_STA_FLAGS;
 349
 350         do_posix_clock_monotonic_gettime(&uptime);
 351         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 352
 353         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 354         sinfo->rx_bytes = sta->rx_bytes;
 355         sinfo->tx_bytes = sta->tx_bytes;
 356         sinfo->rx_packets = sta->rx_packets;
 357         sinfo->tx_packets = sta->tx_packets;
 358         sinfo->tx_retries = sta->tx_retry_count;
 359         sinfo->tx_failed = sta->tx_retry_failed;
 360         sinfo->rx_dropped_misc = sta->rx_dropped;
 361
 362         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 363             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 364                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 365                 sinfo->signal = (s8)sta->last_signal;
 366                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 367         }
 368
 369         sinfo->txrate.flags = 0;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 374         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 375                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 376         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 377
 378         sinfo->rxrate.flags = 0;
 379         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 381         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 383         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 384                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 385         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 386
 387         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 388 #ifdef CONFIG_MAC80211_MESH
 389                 sinfo->filled |= STATION_INFO_LLID |
 390                                  STATION_INFO_PLID |
 391                                  STATION_INFO_PLINK_STATE;
 392
 393                 sinfo->llid = le16_to_cpu(sta->llid);
 394                 sinfo->plid = le16_to_cpu(sta->plid);
 395                 sinfo->plink_state = sta->plink_state;
 396 #endif
 397         }
 398
 399         sinfo->bss_param.flags = 0;
 400         if (sdata->vif.bss_conf.use_cts_prot)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 402         if (sdata->vif.bss_conf.use_short_preamble)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 404         if (sdata->vif.bss_conf.use_short_slot)
 405                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 406         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 407         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 408
 409         sinfo->sta_flags.set = 0;
 410         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 411                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 412                                 BIT(NL80211_STA_FLAG_WME) |
 413                                 BIT(NL80211_STA_FLAG_MFP) |
 414                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 415                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 416         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 417                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 418         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 419                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 420         if (test_sta_flag(sta, WLAN_STA_WME))
 421                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 422         if (test_sta_flag(sta, WLAN_STA_MFP))
 423                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 424         if (test_sta_flag(sta, WLAN_STA_AUTH))
 425                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 426         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 427                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 428 }
 429
 430
 431 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 432                                  int idx, u8 *mac, struct station_info *sinfo)
 433 {
 434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 435         struct sta_info *sta;
 436         int ret = -ENOENT;
 437
 438         rcu_read_lock();
 439
 440         sta = sta_info_get_by_idx(sdata, idx);
 441         if (sta) {
 442                 ret = 0;
 443                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 444                 sta_set_sinfo(sta, sinfo);
 445         }
 446
 447         rcu_read_unlock();
 448
 449         return ret;
 450 }
 451
 452 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 453                                  int idx, struct survey_info *survey)
 454 {
 455         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 456
 457         return drv_get_survey(local, idx, survey);
 458 }
 459
 460 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 461                                  u8 *mac, struct station_info *sinfo)
 462 {
 463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 464         struct sta_info *sta;
 465         int ret = -ENOENT;
 466
 467         rcu_read_lock();
 468
 469         sta = sta_info_get_bss(sdata, mac);
 470         if (sta) {
 471                 ret = 0;
 472                 sta_set_sinfo(sta, sinfo);
 473         }
 474
 475         rcu_read_unlock();
 476
 477         return ret;
 478 }
 479
 480 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 481                                      struct beacon_parameters *params)
 482 {
 483         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 484
 485         bss_conf->ssid_len = params->ssid_len;
 486
 487         if (params->ssid_len)
 488                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 489
 490         bss_conf->hidden_ssid =
 491                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 492 }
 493
 494 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 495                                     u8 *resp, size_t resp_len)
 496 {
 497         struct sk_buff *new, *old;
 498
 499         if (!resp || !resp_len)
 500                 return -EINVAL;
 501
 502         old = sdata->u.ap.probe_resp;
 503
 504         new = dev_alloc_skb(resp_len);
 505         if (!new)
 506                 return -ENOMEM;
 507
 508         memcpy(skb_put(new, resp_len), resp, resp_len);
 509
 510         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 511         synchronize_rcu();
 512
 513         if (old)
 514                 dev_kfree_skb(old);
 515
 516         return 0;
 517 }
 518
 519 /*
 520  * This handles both adding a beacon and setting new beacon info
 521  */
 522 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 523                                    struct beacon_parameters *params)
 524 {
 525         struct beacon_data *new, *old;
 526         int new_head_len, new_tail_len;
 527         int size;
 528         int err = -EINVAL;
 529         u32 changed = 0;
 530
 531         old = rtnl_dereference(sdata->u.ap.beacon);
 532
 533         /* head must not be zero-length */
 534         if (params->head && !params->head_len)
 535                 return -EINVAL;
 536
 537         /*
 538          * This is a kludge. beacon interval should really be part
 539          * of the beacon information.
 540          */
 541         if (params->interval &&
 542             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 543                 sdata->vif.bss_conf.beacon_int = params->interval;
 544                 ieee80211_bss_info_change_notify(sdata,
 545                                                  BSS_CHANGED_BEACON_INT);
 546         }
 547
 548         /* Need to have a beacon head if we don't have one yet */
 549         if (!params->head && !old)
 550                 return err;
 551
 552         /* sorry, no way to start beaconing without dtim period */
 553         if (!params->dtim_period && !old)
 554                 return err;
 555
 556         /* new or old head? */
 557         if (params->head)
 558                 new_head_len = params->head_len;
 559         else
 560                 new_head_len = old->head_len;
 561
 562         /* new or old tail? */
 563         if (params->tail || !old)
 564                 /* params->tail_len will be zero for !params->tail */
 565                 new_tail_len = params->tail_len;
 566         else
 567                 new_tail_len = old->tail_len;
 568
 569         size = sizeof(*new) + new_head_len + new_tail_len;
 570
 571         new = kzalloc(size, GFP_KERNEL);
 572         if (!new)
 573                 return -ENOMEM;
 574
 575         /* start filling the new info now */
 576
 577         /* new or old dtim period? */
 578         if (params->dtim_period)
 579                 new->dtim_period = params->dtim_period;
 580         else
 581                 new->dtim_period = old->dtim_period;
 582
 583         /*
 584          * pointers go into the block we allocated,
 585          * memory is | beacon_data | head | tail |
 586          */
 587         new->head = ((u8 *) new) + sizeof(*new);
 588         new->tail = new->head + new_head_len;
 589         new->head_len = new_head_len;
 590         new->tail_len = new_tail_len;
 591
 592         /* copy in head */
 593         if (params->head)
 594                 memcpy(new->head, params->head, new_head_len);
 595         else
 596                 memcpy(new->head, old->head, new_head_len);
 597
 598         /* copy in optional tail */
 599         if (params->tail)
 600                 memcpy(new->tail, params->tail, new_tail_len);
 601         else
 602                 if (old)
 603                         memcpy(new->tail, old->tail, new_tail_len);
 604
 605         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 606
 607         RCU_INIT_POINTER(sdata->u.ap.beacon, new);
 608
 609         synchronize_rcu();
 610
 611         kfree(old);
 612
 613         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 614                                        params->probe_resp_len);
 615         if (!err)
 616                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 617
 618         ieee80211_config_ap_ssid(sdata, params);
 619         changed |= BSS_CHANGED_BEACON_ENABLED |
 620                    BSS_CHANGED_BEACON |
 621                    BSS_CHANGED_SSID;
 622
 623         ieee80211_bss_info_change_notify(sdata, changed);
 624         return 0;
 625 }
 626
 627 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 628                                 struct beacon_parameters *params)
 629 {
 630         struct ieee80211_sub_if_data *sdata;
 631         struct beacon_data *old;
 632         struct ieee80211_sub_if_data *vlan;
 633         int ret;
 634
 635         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 636
 637         old = rtnl_dereference(sdata->u.ap.beacon);
 638         if (old)
 639                 return -EALREADY;
 640
 641         ret = ieee80211_config_beacon(sdata, params);
 642         if (ret)
 643                 return ret;
 644
 645         /*
 646          * Apply control port protocol, this allows us to
 647          * not encrypt dynamic WEP control frames.
 648          */
 649         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 650         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 651         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 652                 vlan->control_port_protocol =
 653                         params->crypto.control_port_ethertype;
 654                 vlan->control_port_no_encrypt =
 655                         params->crypto.control_port_no_encrypt;
 656         }
 657
 658         return 0;
 659 }
 660
 661 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 662                                 struct beacon_parameters *params)
 663 {
 664         struct ieee80211_sub_if_data *sdata;
 665         struct beacon_data *old;
 666
 667         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 668
 669         old = rtnl_dereference(sdata->u.ap.beacon);
 670         if (!old)
 671                 return -ENOENT;
 672
 673         return ieee80211_config_beacon(sdata, params);
 674 }
 675
 676 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 677 {
 678         struct ieee80211_sub_if_data *sdata;
 679         struct beacon_data *old;
 680
 681         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 682
 683         old = rtnl_dereference(sdata->u.ap.beacon);
 684         if (!old)
 685                 return -ENOENT;
 686
 687         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 688         synchronize_rcu();
 689         kfree(old);
 690
 691         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 692         return 0;
 693 }
 694
 695 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 696 struct iapp_layer2_update {
 697         u8 da[ETH_ALEN];        /* broadcast */
 698         u8 sa[ETH_ALEN];        /* STA addr */
 699         __be16 len;             /* 6 */
 700         u8 dsap;                /* 0 */
 701         u8 ssap;                /* 0 */
 702         u8 control;
 703         u8 xid_info[3];
 704 } __packed;
 705
 706 static void ieee80211_send_layer2_update(struct sta_info *sta)
 707 {
 708         struct iapp_layer2_update *msg;
 709         struct sk_buff *skb;
 710
 711         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 712          * bridge devices */
 713
 714         skb = dev_alloc_skb(sizeof(*msg));
 715         if (!skb)
 716                 return;
 717         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 718
 719         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 720          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 721
 722         memset(msg->da, 0xff, ETH_ALEN);
 723         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 724         msg->len = htons(6);
 725         msg->dsap = 0;
 726         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 727         msg->control = 0xaf;    /* XID response lsb.1111F101.
 728                                  * F=0 (no poll command; unsolicited frame) */
 729         msg->xid_info[0] = 0x81;        /* XID format identifier */
 730         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 731         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 732
 733         skb->dev = sta->sdata->dev;
 734         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 735         memset(skb->cb, 0, sizeof(skb->cb));
 736         netif_rx_ni(skb);
 737 }
 738
 739 static void sta_apply_parameters(struct ieee80211_local *local,
 740                                  struct sta_info *sta,
 741                                  struct station_parameters *params)
 742 {
 743         u32 rates;
 744         int i, j;
 745         struct ieee80211_supported_band *sband;
 746         struct ieee80211_sub_if_data *sdata = sta->sdata;
 747         u32 mask, set;
 748
 749         sband = local->hw.wiphy->bands[local->oper_channel->band];
 750
 751         mask = params->sta_flags_mask;
 752         set = params->sta_flags_set;
 753
 754         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 755                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 756                         set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 757                 else
 758                         clear_sta_flag(sta, WLAN_STA_AUTHORIZED);
 759         }
 760
 761         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 762                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 763                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 764                 else
 765                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 766         }
 767
 768         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 769                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 770                         set_sta_flag(sta, WLAN_STA_WME);
 771                         sta->sta.wme = true;
 772                 } else {
 773                         clear_sta_flag(sta, WLAN_STA_WME);
 774                         sta->sta.wme = false;
 775                 }
 776         }
 777
 778         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 779                 if (set & BIT(NL80211_STA_FLAG_MFP))
 780                         set_sta_flag(sta, WLAN_STA_MFP);
 781                 else
 782                         clear_sta_flag(sta, WLAN_STA_MFP);
 783         }
 784
 785         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 786                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 787                         set_sta_flag(sta, WLAN_STA_AUTH);
 788                 else
 789                         clear_sta_flag(sta, WLAN_STA_AUTH);
 790         }
 791
 792         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 793                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 794                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 795                 else
 796                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 797         }
 798
 799         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 800                 sta->sta.uapsd_queues = params->uapsd_queues;
 801                 sta->sta.max_sp = params->max_sp;
 802         }
 803
 804         /*
 805          * cfg80211 validates this (1-2007) and allows setting the AID
 806          * only when creating a new station entry
 807          */
 808         if (params->aid)
 809                 sta->sta.aid = params->aid;
 810
 811         /*
 812          * FIXME: updating the following information is racy when this
 813          *        function is called from ieee80211_change_station().
 814          *        However, all this information should be static so
 815          *        maybe we should just reject attemps to change it.
 816          */
 817
 818         if (params->listen_interval >= 0)
 819                 sta->listen_interval = params->listen_interval;
 820
 821         if (params->supported_rates) {
 822                 rates = 0;
 823
 824                 for (i = 0; i < params->supported_rates_len; i++) {
 825                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 826                         for (j = 0; j < sband->n_bitrates; j++) {
 827                                 if (sband->bitrates[j].bitrate == rate)
 828                                         rates |= BIT(j);
 829                         }
 830                 }
 831                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 832         }
 833
 834         if (params->ht_capa)
 835                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 836                                                   params->ht_capa,
 837                                                   &sta->sta.ht_cap);
 838
 839         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 840 #ifdef CONFIG_MAC80211_MESH
 841                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 842                         switch (params->plink_state) {
 843                         case NL80211_PLINK_LISTEN:
 844                         case NL80211_PLINK_ESTAB:
 845                         case NL80211_PLINK_BLOCKED:
 846                                 sta->plink_state = params->plink_state;
 847                                 break;
 848                         default:
 849                                 /*  nothing  */
 850                                 break;
 851                         }
 852                 else
 853                         switch (params->plink_action) {
 854                         case PLINK_ACTION_OPEN:
 855                                 mesh_plink_open(sta);
 856                                 break;
 857                         case PLINK_ACTION_BLOCK:
 858                                 mesh_plink_block(sta);
 859                                 break;
 860                         }
 861 #endif
 862         }
 863 }
 864
 865 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 866                                  u8 *mac, struct station_parameters *params)
 867 {
 868         struct ieee80211_local *local = wiphy_priv(wiphy);
 869         struct sta_info *sta;
 870         struct ieee80211_sub_if_data *sdata;
 871         int err;
 872         int layer2_update;
 873
 874         if (params->vlan) {
 875                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 876
 877                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 878                     sdata->vif.type != NL80211_IFTYPE_AP)
 879                         return -EINVAL;
 880         } else
 881                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 882
 883         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 884                 return -EINVAL;
 885
 886         if (is_multicast_ether_addr(mac))
 887                 return -EINVAL;
 888
 889         /* Only TDLS-supporting stations can add TDLS peers */
 890         if ((params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 891             !((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
 892               sdata->vif.type == NL80211_IFTYPE_STATION))
 893                 return -ENOTSUPP;
 894
 895         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 896         if (!sta)
 897                 return -ENOMEM;
 898
 899         set_sta_flag(sta, WLAN_STA_AUTH);
 900         set_sta_flag(sta, WLAN_STA_ASSOC);
 901
 902         sta_apply_parameters(local, sta, params);
 903
 904         /*
 905          * for TDLS, rate control should be initialized only when supported
 906          * rates are known.
 907          */
 908         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 909                 rate_control_rate_init(sta);
 910
 911         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 912                 sdata->vif.type == NL80211_IFTYPE_AP;
 913
 914         err = sta_info_insert_rcu(sta);
 915         if (err) {
 916                 rcu_read_unlock();
 917                 return err;
 918         }
 919
 920         if (layer2_update)
 921                 ieee80211_send_layer2_update(sta);
 922
 923         rcu_read_unlock();
 924
 925         return 0;
 926 }
 927
 928 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 929                                  u8 *mac)
 930 {
 931         struct ieee80211_local *local = wiphy_priv(wiphy);
 932         struct ieee80211_sub_if_data *sdata;
 933
 934         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 935
 936         if (mac)
 937                 return sta_info_destroy_addr_bss(sdata, mac);
 938
 939         sta_info_flush(local, sdata);
 940         return 0;
 941 }
 942
 943 static int ieee80211_change_station(struct wiphy *wiphy,
 944                                     struct net_device *dev,
 945                                     u8 *mac,
 946                                     struct station_parameters *params)
 947 {
 948         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 949         struct ieee80211_local *local = wiphy_priv(wiphy);
 950         struct sta_info *sta;
 951         struct ieee80211_sub_if_data *vlansdata;
 952
 953         rcu_read_lock();
 954
 955         sta = sta_info_get_bss(sdata, mac);
 956         if (!sta) {
 957                 rcu_read_unlock();
 958                 return -ENOENT;
 959         }
 960
 961         /* The TDLS bit cannot be toggled after the STA was added */
 962         if ((params->sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 963             !!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) !=
 964             !!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 965                 rcu_read_unlock();
 966                 return -EINVAL;
 967         }
 968
 969         if (params->vlan && params->vlan != sta->sdata->dev) {
 970                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 971
 972                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 973                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 974                         rcu_read_unlock();
 975                         return -EINVAL;
 976                 }
 977
 978                 if (params->vlan->ieee80211_ptr->use_4addr) {
 979                         if (vlansdata->u.vlan.sta) {
 980                                 rcu_read_unlock();
 981                                 return -EBUSY;
 982                         }
 983
 984                         RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta);
 985                 }
 986
 987                 sta->sdata = vlansdata;
 988                 ieee80211_send_layer2_update(sta);
 989         }
 990
 991         sta_apply_parameters(local, sta, params);
 992
 993         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
 994                 rate_control_rate_init(sta);
 995
 996         rcu_read_unlock();
 997
 998         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 999             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1000                 ieee80211_recalc_ps(local, -1);
1001
1002         return 0;
1003 }
1004
1005 #ifdef CONFIG_MAC80211_MESH
1006 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1007                                  u8 *dst, u8 *next_hop)
1008 {
1009         struct ieee80211_sub_if_data *sdata;
1010         struct mesh_path *mpath;
1011         struct sta_info *sta;
1012         int err;
1013
1014         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1015
1016         rcu_read_lock();
1017         sta = sta_info_get(sdata, next_hop);
1018         if (!sta) {
1019                 rcu_read_unlock();
1020                 return -ENOENT;
1021         }
1022
1023         err = mesh_path_add(dst, sdata);
1024         if (err) {
1025                 rcu_read_unlock();
1026                 return err;
1027         }
1028
1029         mpath = mesh_path_lookup(dst, sdata);
1030         if (!mpath) {
1031                 rcu_read_unlock();
1032                 return -ENXIO;
1033         }
1034         mesh_path_fix_nexthop(mpath, sta);
1035
1036         rcu_read_unlock();
1037         return 0;
1038 }
1039
1040 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1041                                  u8 *dst)
1042 {
1043         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1044
1045         if (dst)
1046                 return mesh_path_del(dst, sdata);
1047
1048         mesh_path_flush_by_iface(sdata);
1049         return 0;
1050 }
1051
1052 static int ieee80211_change_mpath(struct wiphy *wiphy,
1053                                     struct net_device *dev,
1054                                     u8 *dst, u8 *next_hop)
1055 {
1056         struct ieee80211_sub_if_data *sdata;
1057         struct mesh_path *mpath;
1058         struct sta_info *sta;
1059
1060         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1061
1062         rcu_read_lock();
1063
1064         sta = sta_info_get(sdata, next_hop);
1065         if (!sta) {
1066                 rcu_read_unlock();
1067                 return -ENOENT;
1068         }
1069
1070         mpath = mesh_path_lookup(dst, sdata);
1071         if (!mpath) {
1072                 rcu_read_unlock();
1073                 return -ENOENT;
1074         }
1075
1076         mesh_path_fix_nexthop(mpath, sta);
1077
1078         rcu_read_unlock();
1079         return 0;
1080 }
1081
1082 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1083                             struct mpath_info *pinfo)
1084 {
1085         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1086
1087         if (next_hop_sta)
1088                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1089         else
1090                 memset(next_hop, 0, ETH_ALEN);
1091
1092         pinfo->generation = mesh_paths_generation;
1093
1094         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1095                         MPATH_INFO_SN |
1096                         MPATH_INFO_METRIC |
1097                         MPATH_INFO_EXPTIME |
1098                         MPATH_INFO_DISCOVERY_TIMEOUT |
1099                         MPATH_INFO_DISCOVERY_RETRIES |
1100                         MPATH_INFO_FLAGS;
1101
1102         pinfo->frame_qlen = mpath->frame_queue.qlen;
1103         pinfo->sn = mpath->sn;
1104         pinfo->metric = mpath->metric;
1105         if (time_before(jiffies, mpath->exp_time))
1106                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1107         pinfo->discovery_timeout =
1108                         jiffies_to_msecs(mpath->discovery_timeout);
1109         pinfo->discovery_retries = mpath->discovery_retries;
1110         pinfo->flags = 0;
1111         if (mpath->flags & MESH_PATH_ACTIVE)
1112                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1113         if (mpath->flags & MESH_PATH_RESOLVING)
1114                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1115         if (mpath->flags & MESH_PATH_SN_VALID)
1116                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1117         if (mpath->flags & MESH_PATH_FIXED)
1118                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1119         if (mpath->flags & MESH_PATH_RESOLVING)
1120                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1121
1122         pinfo->flags = mpath->flags;
1123 }
1124
1125 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1126                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1127
1128 {
1129         struct ieee80211_sub_if_data *sdata;
1130         struct mesh_path *mpath;
1131
1132         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1133
1134         rcu_read_lock();
1135         mpath = mesh_path_lookup(dst, sdata);
1136         if (!mpath) {
1137                 rcu_read_unlock();
1138                 return -ENOENT;
1139         }
1140         memcpy(dst, mpath->dst, ETH_ALEN);
1141         mpath_set_pinfo(mpath, next_hop, pinfo);
1142         rcu_read_unlock();
1143         return 0;
1144 }
1145
1146 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1147                                  int idx, u8 *dst, u8 *next_hop,
1148                                  struct mpath_info *pinfo)
1149 {
1150         struct ieee80211_sub_if_data *sdata;
1151         struct mesh_path *mpath;
1152
1153         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1154
1155         rcu_read_lock();
1156         mpath = mesh_path_lookup_by_idx(idx, sdata);
1157         if (!mpath) {
1158                 rcu_read_unlock();
1159                 return -ENOENT;
1160         }
1161         memcpy(dst, mpath->dst, ETH_ALEN);
1162         mpath_set_pinfo(mpath, next_hop, pinfo);
1163         rcu_read_unlock();
1164         return 0;
1165 }
1166
1167 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1168                                 struct net_device *dev,
1169                                 struct mesh_config *conf)
1170 {
1171         struct ieee80211_sub_if_data *sdata;
1172         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1173
1174         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1175         return 0;
1176 }
1177
1178 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1179 {
1180         return (mask >> (parm-1)) & 0x1;
1181 }
1182
1183 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1184                 const struct mesh_setup *setup)
1185 {
1186         u8 *new_ie;
1187         const u8 *old_ie;
1188
1189         /* allocate information elements */
1190         new_ie = NULL;
1191         old_ie = ifmsh->ie;
1192
1193         if (setup->ie_len) {
1194                 new_ie = kmemdup(setup->ie, setup->ie_len,
1195                                 GFP_KERNEL);
1196                 if (!new_ie)
1197                         return -ENOMEM;
1198         }
1199         ifmsh->ie_len = setup->ie_len;
1200         ifmsh->ie = new_ie;
1201         kfree(old_ie);
1202
1203         /* now copy the rest of the setup parameters */
1204         ifmsh->mesh_id_len = setup->mesh_id_len;
1205         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1206         ifmsh->mesh_pp_id = setup->path_sel_proto;
1207         ifmsh->mesh_pm_id = setup->path_metric;
1208         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1209         if (setup->is_authenticated)
1210                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1211         if (setup->is_secure)
1212                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1213
1214         return 0;
1215 }
1216
1217 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1218                                         struct net_device *dev, u32 mask,
1219                                         const struct mesh_config *nconf)
1220 {
1221         struct mesh_config *conf;
1222         struct ieee80211_sub_if_data *sdata;
1223         struct ieee80211_if_mesh *ifmsh;
1224
1225         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1226         ifmsh = &sdata->u.mesh;
1227
1228         /* Set the config options which we are interested in setting */
1229         conf = &(sdata->u.mesh.mshcfg);
1230         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1231                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1232         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1233                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1234         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1235                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1236         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1237                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1238         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1239                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1240         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1241                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1242         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1243                 conf->dot11MeshTTL = nconf->element_ttl;
1244         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1245                 conf->auto_open_plinks = nconf->auto_open_plinks;
1246         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1247                 conf->dot11MeshHWMPmaxPREQretries =
1248                         nconf->dot11MeshHWMPmaxPREQretries;
1249         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1250                 conf->path_refresh_time = nconf->path_refresh_time;
1251         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1252                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1253         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1254                 conf->dot11MeshHWMPactivePathTimeout =
1255                         nconf->dot11MeshHWMPactivePathTimeout;
1256         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1257                 conf->dot11MeshHWMPpreqMinInterval =
1258                         nconf->dot11MeshHWMPpreqMinInterval;
1259         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1260                            mask))
1261                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1262                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1263         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1264                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1265                 ieee80211_mesh_root_setup(ifmsh);
1266         }
1267         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1268                 /* our current gate announcement implementation rides on root
1269                  * announcements, so require this ifmsh to also be a root node
1270                  * */
1271                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1272                     !conf->dot11MeshHWMPRootMode) {
1273                         conf->dot11MeshHWMPRootMode = 1;
1274                         ieee80211_mesh_root_setup(ifmsh);
1275                 }
1276                 conf->dot11MeshGateAnnouncementProtocol =
1277                         nconf->dot11MeshGateAnnouncementProtocol;
1278         }
1279         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1280                 conf->dot11MeshHWMPRannInterval =
1281                         nconf->dot11MeshHWMPRannInterval;
1282         }
1283         return 0;
1284 }
1285
1286 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1287                                const struct mesh_config *conf,
1288                                const struct mesh_setup *setup)
1289 {
1290         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1291         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1292         int err;
1293
1294         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1295         err = copy_mesh_setup(ifmsh, setup);
1296         if (err)
1297                 return err;
1298         ieee80211_start_mesh(sdata);
1299
1300         return 0;
1301 }
1302
1303 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1304 {
1305         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1306
1307         ieee80211_stop_mesh(sdata);
1308
1309         return 0;
1310 }
1311 #endif
1312
1313 static int ieee80211_change_bss(struct wiphy *wiphy,
1314                                 struct net_device *dev,
1315                                 struct bss_parameters *params)
1316 {
1317         struct ieee80211_sub_if_data *sdata;
1318         u32 changed = 0;
1319
1320         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1321
1322         if (params->use_cts_prot >= 0) {
1323                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1324                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1325         }
1326         if (params->use_short_preamble >= 0) {
1327                 sdata->vif.bss_conf.use_short_preamble =
1328                         params->use_short_preamble;
1329                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1330         }
1331
1332         if (!sdata->vif.bss_conf.use_short_slot &&
1333             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1334                 sdata->vif.bss_conf.use_short_slot = true;
1335                 changed |= BSS_CHANGED_ERP_SLOT;
1336         }
1337
1338         if (params->use_short_slot_time >= 0) {
1339                 sdata->vif.bss_conf.use_short_slot =
1340                         params->use_short_slot_time;
1341                 changed |= BSS_CHANGED_ERP_SLOT;
1342         }
1343
1344         if (params->basic_rates) {
1345                 int i, j;
1346                 u32 rates = 0;
1347                 struct ieee80211_local *local = wiphy_priv(wiphy);
1348                 struct ieee80211_supported_band *sband =
1349                         wiphy->bands[local->oper_channel->band];
1350
1351                 for (i = 0; i < params->basic_rates_len; i++) {
1352                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1353                         for (j = 0; j < sband->n_bitrates; j++) {
1354                                 if (sband->bitrates[j].bitrate == rate)
1355                                         rates |= BIT(j);
1356                         }
1357                 }
1358                 sdata->vif.bss_conf.basic_rates = rates;
1359                 changed |= BSS_CHANGED_BASIC_RATES;
1360         }
1361
1362         if (params->ap_isolate >= 0) {
1363                 if (params->ap_isolate)
1364                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1365                 else
1366                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1367         }
1368
1369         if (params->ht_opmode >= 0) {
1370                 sdata->vif.bss_conf.ht_operation_mode =
1371                         (u16) params->ht_opmode;
1372                 changed |= BSS_CHANGED_HT;
1373         }
1374
1375         ieee80211_bss_info_change_notify(sdata, changed);
1376
1377         return 0;
1378 }
1379
1380 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1381                                     struct net_device *dev,
1382                                     struct ieee80211_txq_params *params)
1383 {
1384         struct ieee80211_local *local = wiphy_priv(wiphy);
1385         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1386         struct ieee80211_tx_queue_params p;
1387
1388         if (!local->ops->conf_tx)
1389                 return -EOPNOTSUPP;
1390
1391         memset(&p, 0, sizeof(p));
1392         p.aifs = params->aifs;
1393         p.cw_max = params->cwmax;
1394         p.cw_min = params->cwmin;
1395         p.txop = params->txop;
1396
1397         /*
1398          * Setting tx queue params disables u-apsd because it's only
1399          * called in master mode.
1400          */
1401         p.uapsd = false;
1402
1403         if (params->queue >= local->hw.queues)
1404                 return -EINVAL;
1405
1406         sdata->tx_conf[params->queue] = p;
1407         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1408                 wiphy_debug(local->hw.wiphy,
1409                             "failed to set TX queue parameters for queue %d\n",
1410                             params->queue);
1411                 return -EINVAL;
1412         }
1413
1414         return 0;
1415 }
1416
1417 static int ieee80211_set_channel(struct wiphy *wiphy,
1418                                  struct net_device *netdev,
1419                                  struct ieee80211_channel *chan,
1420                                  enum nl80211_channel_type channel_type)
1421 {
1422         struct ieee80211_local *local = wiphy_priv(wiphy);
1423         struct ieee80211_sub_if_data *sdata = NULL;
1424         struct ieee80211_channel *old_oper;
1425         enum nl80211_channel_type old_oper_type;
1426         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1427
1428         if (netdev)
1429                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1430
1431         switch (ieee80211_get_channel_mode(local, NULL)) {
1432         case CHAN_MODE_HOPPING:
1433                 return -EBUSY;
1434         case CHAN_MODE_FIXED:
1435                 if (local->oper_channel != chan)
1436                         return -EBUSY;
1437                 if (!sdata && local->_oper_channel_type == channel_type)
1438                         return 0;
1439                 break;
1440         case CHAN_MODE_UNDEFINED:
1441                 break;
1442         }
1443
1444         if (sdata)
1445                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1446         old_oper_type = local->_oper_channel_type;
1447
1448         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1449                 return -EBUSY;
1450
1451         old_oper = local->oper_channel;
1452         local->oper_channel = chan;
1453
1454         /* Update driver if changes were actually made. */
1455         if ((old_oper != local->oper_channel) ||
1456             (old_oper_type != local->_oper_channel_type))
1457                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1458
1459         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1460             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1461                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1462
1463         return 0;
1464 }
1465
1466 #ifdef CONFIG_PM
1467 static int ieee80211_suspend(struct wiphy *wiphy,
1468                              struct cfg80211_wowlan *wowlan)
1469 {
1470         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1471 }
1472
1473 static int ieee80211_resume(struct wiphy *wiphy)
1474 {
1475         return __ieee80211_resume(wiphy_priv(wiphy));
1476 }
1477 #else
1478 #define ieee80211_suspend NULL
1479 #define ieee80211_resume NULL
1480 #endif
1481
1482 static int ieee80211_scan(struct wiphy *wiphy,
1483                           struct net_device *dev,
1484                           struct cfg80211_scan_request *req)
1485 {
1486         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1487
1488         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1489         case NL80211_IFTYPE_STATION:
1490         case NL80211_IFTYPE_ADHOC:
1491         case NL80211_IFTYPE_MESH_POINT:
1492         case NL80211_IFTYPE_P2P_CLIENT:
1493                 break;
1494         case NL80211_IFTYPE_P2P_GO:
1495                 if (sdata->local->ops->hw_scan)
1496                         break;
1497                 /*
1498                  * FIXME: implement NoA while scanning in software,
1499                  * for now fall through to allow scanning only when
1500                  * beaconing hasn't been configured yet
1501                  */
1502         case NL80211_IFTYPE_AP:
1503                 if (sdata->u.ap.beacon)
1504                         return -EOPNOTSUPP;
1505                 break;
1506         default:
1507                 return -EOPNOTSUPP;
1508         }
1509
1510         return ieee80211_request_scan(sdata, req);
1511 }
1512
1513 static int
1514 ieee80211_sched_scan_start(struct wiphy *wiphy,
1515                            struct net_device *dev,
1516                            struct cfg80211_sched_scan_request *req)
1517 {
1518         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1519
1520         if (!sdata->local->ops->sched_scan_start)
1521                 return -EOPNOTSUPP;
1522
1523         return ieee80211_request_sched_scan_start(sdata, req);
1524 }
1525
1526 static int
1527 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1528 {
1529         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1530
1531         if (!sdata->local->ops->sched_scan_stop)
1532                 return -EOPNOTSUPP;
1533
1534         return ieee80211_request_sched_scan_stop(sdata);
1535 }
1536
1537 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1538                           struct cfg80211_auth_request *req)
1539 {
1540         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1541 }
1542
1543 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1544                            struct cfg80211_assoc_request *req)
1545 {
1546         struct ieee80211_local *local = wiphy_priv(wiphy);
1547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549         switch (ieee80211_get_channel_mode(local, sdata)) {
1550         case CHAN_MODE_HOPPING:
1551                 return -EBUSY;
1552         case CHAN_MODE_FIXED:
1553                 if (local->oper_channel == req->bss->channel)
1554                         break;
1555                 return -EBUSY;
1556         case CHAN_MODE_UNDEFINED:
1557                 break;
1558         }
1559
1560         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1561 }
1562
1563 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1564                             struct cfg80211_deauth_request *req,
1565                             void *cookie)
1566 {
1567         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1568                                     req, cookie);
1569 }
1570
1571 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1572                               struct cfg80211_disassoc_request *req,
1573                               void *cookie)
1574 {
1575         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1576                                       req, cookie);
1577 }
1578
1579 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1580                                struct cfg80211_ibss_params *params)
1581 {
1582         struct ieee80211_local *local = wiphy_priv(wiphy);
1583         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1584
1585         switch (ieee80211_get_channel_mode(local, sdata)) {
1586         case CHAN_MODE_HOPPING:
1587                 return -EBUSY;
1588         case CHAN_MODE_FIXED:
1589                 if (!params->channel_fixed)
1590                         return -EBUSY;
1591                 if (local->oper_channel == params->channel)
1592                         break;
1593                 return -EBUSY;
1594         case CHAN_MODE_UNDEFINED:
1595                 break;
1596         }
1597
1598         return ieee80211_ibss_join(sdata, params);
1599 }
1600
1601 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1602 {
1603         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1604
1605         return ieee80211_ibss_leave(sdata);
1606 }
1607
1608 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1609 {
1610         struct ieee80211_local *local = wiphy_priv(wiphy);
1611         int err;
1612
1613         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1614                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1615
1616                 if (err)
1617                         return err;
1618         }
1619
1620         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1621                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1622
1623                 if (err)
1624                         return err;
1625         }
1626
1627         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1628                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1629
1630                 if (err)
1631                         return err;
1632         }
1633
1634         if (changed & WIPHY_PARAM_RETRY_SHORT)
1635                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1636         if (changed & WIPHY_PARAM_RETRY_LONG)
1637                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1638         if (changed &
1639             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1640                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1641
1642         return 0;
1643 }
1644
1645 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1646                                   enum nl80211_tx_power_setting type, int mbm)
1647 {
1648         struct ieee80211_local *local = wiphy_priv(wiphy);
1649         struct ieee80211_channel *chan = local->hw.conf.channel;
1650         u32 changes = 0;
1651
1652         switch (type) {
1653         case NL80211_TX_POWER_AUTOMATIC:
1654                 local->user_power_level = -1;
1655                 break;
1656         case NL80211_TX_POWER_LIMITED:
1657                 if (mbm < 0 || (mbm % 100))
1658                         return -EOPNOTSUPP;
1659                 local->user_power_level = MBM_TO_DBM(mbm);
1660                 break;
1661         case NL80211_TX_POWER_FIXED:
1662                 if (mbm < 0 || (mbm % 100))
1663                         return -EOPNOTSUPP;
1664                 /* TODO: move to cfg80211 when it knows the channel */
1665                 if (MBM_TO_DBM(mbm) > chan->max_power)
1666                         return -EINVAL;
1667                 local->user_power_level = MBM_TO_DBM(mbm);
1668                 break;
1669         }
1670
1671         ieee80211_hw_config(local, changes);
1672
1673         return 0;
1674 }
1675
1676 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1677 {
1678         struct ieee80211_local *local = wiphy_priv(wiphy);
1679
1680         *dbm = local->hw.conf.power_level;
1681
1682         return 0;
1683 }
1684
1685 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1686                                   const u8 *addr)
1687 {
1688         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1689
1690         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1691
1692         return 0;
1693 }
1694
1695 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1696 {
1697         struct ieee80211_local *local = wiphy_priv(wiphy);
1698
1699         drv_rfkill_poll(local);
1700 }
1701
1702 #ifdef CONFIG_NL80211_TESTMODE
1703 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1704 {
1705         struct ieee80211_local *local = wiphy_priv(wiphy);
1706
1707         if (!local->ops->testmode_cmd)
1708                 return -EOPNOTSUPP;
1709
1710         return local->ops->testmode_cmd(&local->hw, data, len);
1711 }
1712
1713 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1714                                    struct sk_buff *skb,
1715                                    struct netlink_callback *cb,
1716                                    void *data, int len)
1717 {
1718         struct ieee80211_local *local = wiphy_priv(wiphy);
1719
1720         if (!local->ops->testmode_dump)
1721                 return -EOPNOTSUPP;
1722
1723         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1724 }
1725 #endif
1726
1727 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1728                              enum ieee80211_smps_mode smps_mode)
1729 {
1730         const u8 *ap;
1731         enum ieee80211_smps_mode old_req;
1732         int err;
1733
1734         lockdep_assert_held(&sdata->u.mgd.mtx);
1735
1736         old_req = sdata->u.mgd.req_smps;
1737         sdata->u.mgd.req_smps = smps_mode;
1738
1739         if (old_req == smps_mode &&
1740             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1741                 return 0;
1742
1743         /*
1744          * If not associated, or current association is not an HT
1745          * association, there's no need to send an action frame.
1746          */
1747         if (!sdata->u.mgd.associated ||
1748             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1749                 mutex_lock(&sdata->local->iflist_mtx);
1750                 ieee80211_recalc_smps(sdata->local);
1751                 mutex_unlock(&sdata->local->iflist_mtx);
1752                 return 0;
1753         }
1754
1755         ap = sdata->u.mgd.associated->bssid;
1756
1757         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1758                 if (sdata->u.mgd.powersave)
1759                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1760                 else
1761                         smps_mode = IEEE80211_SMPS_OFF;
1762         }
1763
1764         /* send SM PS frame to AP */
1765         err = ieee80211_send_smps_action(sdata, smps_mode,
1766                                          ap, ap);
1767         if (err)
1768                 sdata->u.mgd.req_smps = old_req;
1769
1770         return err;
1771 }
1772
1773 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1774                                     bool enabled, int timeout)
1775 {
1776         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1777         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1778
1779         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1780                 return -EOPNOTSUPP;
1781
1782         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1783                 return -EOPNOTSUPP;
1784
1785         if (enabled == sdata->u.mgd.powersave &&
1786             timeout == local->dynamic_ps_forced_timeout)
1787                 return 0;
1788
1789         sdata->u.mgd.powersave = enabled;
1790         local->dynamic_ps_forced_timeout = timeout;
1791
1792         /* no change, but if automatic follow powersave */
1793         mutex_lock(&sdata->u.mgd.mtx);
1794         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1795         mutex_unlock(&sdata->u.mgd.mtx);
1796
1797         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1798                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1799
1800         ieee80211_recalc_ps(local, -1);
1801
1802         return 0;
1803 }
1804
1805 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1806                                          struct net_device *dev,
1807                                          s32 rssi_thold, u32 rssi_hyst)
1808 {
1809         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1810         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1811         struct ieee80211_vif *vif = &sdata->vif;
1812         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1813
1814         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1815             rssi_hyst == bss_conf->cqm_rssi_hyst)
1816                 return 0;
1817
1818         bss_conf->cqm_rssi_thold = rssi_thold;
1819         bss_conf->cqm_rssi_hyst = rssi_hyst;
1820
1821         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1822                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1823                         return -EOPNOTSUPP;
1824                 return 0;
1825         }
1826
1827         /* tell the driver upon association, unless already associated */
1828         if (sdata->u.mgd.associated)
1829                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1830
1831         return 0;
1832 }
1833
1834 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1835                                       struct net_device *dev,
1836                                       const u8 *addr,
1837                                       const struct cfg80211_bitrate_mask *mask)
1838 {
1839         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1841         int i, ret;
1842
1843         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1844                 ret = drv_set_bitrate_mask(local, sdata, mask);
1845                 if (ret)
1846                         return ret;
1847         }
1848
1849         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1850                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1851
1852         return 0;
1853 }
1854
1855 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1856                                           struct net_device *dev,
1857                                           struct ieee80211_channel *chan,
1858                                           enum nl80211_channel_type chantype,
1859                                           unsigned int duration, u64 *cookie)
1860 {
1861         int ret;
1862         u32 random_cookie;
1863
1864         lockdep_assert_held(&local->mtx);
1865
1866         if (local->hw_roc_cookie)
1867                 return -EBUSY;
1868         /* must be nonzero */
1869         random_cookie = random32() | 1;
1870
1871         *cookie = random_cookie;
1872         local->hw_roc_dev = dev;
1873         local->hw_roc_cookie = random_cookie;
1874         local->hw_roc_channel = chan;
1875         local->hw_roc_channel_type = chantype;
1876         local->hw_roc_duration = duration;
1877         ret = drv_remain_on_channel(local, chan, chantype, duration);
1878         if (ret) {
1879                 local->hw_roc_channel = NULL;
1880                 local->hw_roc_cookie = 0;
1881         }
1882
1883         return ret;
1884 }
1885
1886 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1887                                        struct net_device *dev,
1888                                        struct ieee80211_channel *chan,
1889                                        enum nl80211_channel_type channel_type,
1890                                        unsigned int duration,
1891                                        u64 *cookie)
1892 {
1893         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1894         struct ieee80211_local *local = sdata->local;
1895
1896         if (local->ops->remain_on_channel) {
1897                 int ret;
1898
1899                 mutex_lock(&local->mtx);
1900                 ret = ieee80211_remain_on_channel_hw(local, dev,
1901                                                      chan, channel_type,
1902                                                      duration, cookie);
1903                 local->hw_roc_for_tx = false;
1904                 mutex_unlock(&local->mtx);
1905
1906                 return ret;
1907         }
1908
1909         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1910                                               duration, cookie);
1911 }
1912
1913 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1914                                                  u64 cookie)
1915 {
1916         int ret;
1917
1918         lockdep_assert_held(&local->mtx);
1919
1920         if (local->hw_roc_cookie != cookie)
1921                 return -ENOENT;
1922
1923         ret = drv_cancel_remain_on_channel(local);
1924         if (ret)
1925                 return ret;
1926
1927         local->hw_roc_cookie = 0;
1928         local->hw_roc_channel = NULL;
1929
1930         ieee80211_recalc_idle(local);
1931
1932         return 0;
1933 }
1934
1935 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1936                                               struct net_device *dev,
1937                                               u64 cookie)
1938 {
1939         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1940         struct ieee80211_local *local = sdata->local;
1941
1942         if (local->ops->cancel_remain_on_channel) {
1943                 int ret;
1944
1945                 mutex_lock(&local->mtx);
1946                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1947                 mutex_unlock(&local->mtx);
1948
1949                 return ret;
1950         }
1951
1952         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1953 }
1954
1955 static enum work_done_result
1956 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1957 {
1958         /*
1959          * Use the data embedded in the work struct for reporting
1960          * here so if the driver mangled the SKB before dropping
1961          * it (which is the only way we really should get here)
1962          * then we don't report mangled data.
1963          *
1964          * If there was no wait time, then by the time we get here
1965          * the driver will likely not have reported the status yet,
1966          * so in that case userspace will have to deal with it.
1967          */
1968
1969         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
1970                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1971                                         (unsigned long) wk->offchan_tx.frame,
1972                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1973
1974         return WORK_DONE_DESTROY;
1975 }
1976
1977 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1978                              struct ieee80211_channel *chan, bool offchan,
1979                              enum nl80211_channel_type channel_type,
1980                              bool channel_type_valid, unsigned int wait,
1981                              const u8 *buf, size_t len, bool no_cck,
1982                              bool dont_wait_for_ack, u64 *cookie)
1983 {
1984         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1985         struct ieee80211_local *local = sdata->local;
1986         struct sk_buff *skb;
1987         struct sta_info *sta;
1988         struct ieee80211_work *wk;
1989         const struct ieee80211_mgmt *mgmt = (void *)buf;
1990         u32 flags;
1991         bool is_offchan = false;
1992
1993         if (dont_wait_for_ack)
1994                 flags = IEEE80211_TX_CTL_NO_ACK;
1995         else
1996                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1997                         IEEE80211_TX_CTL_REQ_TX_STATUS;
1998
1999         /* Check that we are on the requested channel for transmission */
2000         if (chan != local->tmp_channel &&
2001             chan != local->oper_channel)
2002                 is_offchan = true;
2003         if (channel_type_valid &&
2004             (channel_type != local->tmp_channel_type &&
2005              channel_type != local->_oper_channel_type))
2006                 is_offchan = true;
2007
2008         if (chan == local->hw_roc_channel) {
2009                 /* TODO: check channel type? */
2010                 is_offchan = false;
2011                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2012         }
2013
2014         if (no_cck)
2015                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2016
2017         if (is_offchan && !offchan)
2018                 return -EBUSY;
2019
2020         switch (sdata->vif.type) {
2021         case NL80211_IFTYPE_ADHOC:
2022         case NL80211_IFTYPE_AP:
2023         case NL80211_IFTYPE_AP_VLAN:
2024         case NL80211_IFTYPE_P2P_GO:
2025         case NL80211_IFTYPE_MESH_POINT:
2026                 if (!ieee80211_is_action(mgmt->frame_control) ||
2027                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2028                         break;
2029                 rcu_read_lock();
2030                 sta = sta_info_get(sdata, mgmt->da);
2031                 rcu_read_unlock();
2032                 if (!sta)
2033                         return -ENOLINK;
2034                 break;
2035         case NL80211_IFTYPE_STATION:
2036         case NL80211_IFTYPE_P2P_CLIENT:
2037                 break;
2038         default:
2039                 return -EOPNOTSUPP;
2040         }
2041
2042         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2043         if (!skb)
2044                 return -ENOMEM;
2045         skb_reserve(skb, local->hw.extra_tx_headroom);
2046
2047         memcpy(skb_put(skb, len), buf, len);
2048
2049         IEEE80211_SKB_CB(skb)->flags = flags;
2050
2051         skb->dev = sdata->dev;
2052
2053         *cookie = (unsigned long) skb;
2054
2055         if (is_offchan && local->ops->remain_on_channel) {
2056                 unsigned int duration;
2057                 int ret;
2058
2059                 mutex_lock(&local->mtx);
2060                 /*
2061                  * If the duration is zero, then the driver
2062                  * wouldn't actually do anything. Set it to
2063                  * 100 for now.
2064                  *
2065                  * TODO: cancel the off-channel operation
2066                  *       when we get the SKB's TX status and
2067                  *       the wait time was zero before.
2068                  */
2069                 duration = 100;
2070                 if (wait)
2071                         duration = wait;
2072                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2073                                                      channel_type,
2074                                                      duration, cookie);
2075                 if (ret) {
2076                         kfree_skb(skb);
2077                         mutex_unlock(&local->mtx);
2078                         return ret;
2079                 }
2080
2081                 local->hw_roc_for_tx = true;
2082                 local->hw_roc_duration = wait;
2083
2084                 /*
2085                  * queue up frame for transmission after
2086                  * ieee80211_ready_on_channel call
2087                  */
2088
2089                 /* modify cookie to prevent API mismatches */
2090                 *cookie ^= 2;
2091                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2092                 local->hw_roc_skb = skb;
2093                 local->hw_roc_skb_for_status = skb;
2094                 mutex_unlock(&local->mtx);
2095
2096                 return 0;
2097         }
2098
2099         /*
2100          * Can transmit right away if the channel was the
2101          * right one and there's no wait involved... If a
2102          * wait is involved, we might otherwise not be on
2103          * the right channel for long enough!
2104          */
2105         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2106                 ieee80211_tx_skb(sdata, skb);
2107                 return 0;
2108         }
2109
2110         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2111         if (!wk) {
2112                 kfree_skb(skb);
2113                 return -ENOMEM;
2114         }
2115
2116         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2117         wk->chan = chan;
2118         wk->chan_type = channel_type;
2119         wk->sdata = sdata;
2120         wk->done = ieee80211_offchan_tx_done;
2121         wk->offchan_tx.frame = skb;
2122         wk->offchan_tx.wait = wait;
2123         wk->ie_len = len;
2124         memcpy(wk->ie, buf, len);
2125
2126         ieee80211_add_work(wk);
2127         return 0;
2128 }
2129
2130 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2131                                          struct net_device *dev,
2132                                          u64 cookie)
2133 {
2134         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2135         struct ieee80211_local *local = sdata->local;
2136         struct ieee80211_work *wk;
2137         int ret = -ENOENT;
2138
2139         mutex_lock(&local->mtx);
2140
2141         if (local->ops->cancel_remain_on_channel) {
2142                 cookie ^= 2;
2143                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2144
2145                 if (ret == 0) {
2146                         kfree_skb(local->hw_roc_skb);
2147                         local->hw_roc_skb = NULL;
2148                         local->hw_roc_skb_for_status = NULL;
2149                 }
2150
2151                 mutex_unlock(&local->mtx);
2152
2153                 return ret;
2154         }
2155
2156         list_for_each_entry(wk, &local->work_list, list) {
2157                 if (wk->sdata != sdata)
2158                         continue;
2159
2160                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2161                         continue;
2162
2163                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2164                         continue;
2165
2166                 wk->timeout = jiffies;
2167
2168                 ieee80211_queue_work(&local->hw, &local->work_work);
2169                 ret = 0;
2170                 break;
2171         }
2172         mutex_unlock(&local->mtx);
2173
2174         return ret;
2175 }
2176
2177 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2178                                           struct net_device *dev,
2179                                           u16 frame_type, bool reg)
2180 {
2181         struct ieee80211_local *local = wiphy_priv(wiphy);
2182
2183         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2184                 return;
2185
2186         if (reg)
2187                 local->probe_req_reg++;
2188         else
2189                 local->probe_req_reg--;
2190
2191         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2192 }
2193
2194 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2195 {
2196         struct ieee80211_local *local = wiphy_priv(wiphy);
2197
2198         if (local->started)
2199                 return -EOPNOTSUPP;
2200
2201         return drv_set_antenna(local, tx_ant, rx_ant);
2202 }
2203
2204 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2205 {
2206         struct ieee80211_local *local = wiphy_priv(wiphy);
2207
2208         return drv_get_antenna(local, tx_ant, rx_ant);
2209 }
2210
2211 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2212 {
2213         struct ieee80211_local *local = wiphy_priv(wiphy);
2214
2215         return drv_set_ringparam(local, tx, rx);
2216 }
2217
2218 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2219                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2220 {
2221         struct ieee80211_local *local = wiphy_priv(wiphy);
2222
2223         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2224 }
2225
2226 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2227                                     struct net_device *dev,
2228                                     struct cfg80211_gtk_rekey_data *data)
2229 {
2230         struct ieee80211_local *local = wiphy_priv(wiphy);
2231         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2232
2233         if (!local->ops->set_rekey_data)
2234                 return -EOPNOTSUPP;
2235
2236         drv_set_rekey_data(local, sdata, data);
2237
2238         return 0;
2239 }
2240
2241 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2242 {
2243         u8 *pos = (void *)skb_put(skb, 7);
2244
2245         *pos++ = WLAN_EID_EXT_CAPABILITY;
2246         *pos++ = 5; /* len */
2247         *pos++ = 0x0;
2248         *pos++ = 0x0;
2249         *pos++ = 0x0;
2250         *pos++ = 0x0;
2251         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2252 }
2253
2254 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2255 {
2256         struct ieee80211_local *local = sdata->local;
2257         u16 capab;
2258
2259         capab = 0;
2260         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2261                 return capab;
2262
2263         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2264                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2265         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2266                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2267
2268         return capab;
2269 }
2270
2271 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2272                                        u8 *peer, u8 *bssid)
2273 {
2274         struct ieee80211_tdls_lnkie *lnkid;
2275
2276         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2277
2278         lnkid->ie_type = WLAN_EID_LINK_ID;
2279         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2280
2281         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2282         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2283         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2284 }
2285
2286 static int
2287 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2288                                u8 *peer, u8 action_code, u8 dialog_token,
2289                                u16 status_code, struct sk_buff *skb)
2290 {
2291         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2292         struct ieee80211_tdls_data *tf;
2293
2294         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2295
2296         memcpy(tf->da, peer, ETH_ALEN);
2297         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2298         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2299         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2300
2301         switch (action_code) {
2302         case WLAN_TDLS_SETUP_REQUEST:
2303                 tf->category = WLAN_CATEGORY_TDLS;
2304                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2305
2306                 skb_put(skb, sizeof(tf->u.setup_req));
2307                 tf->u.setup_req.dialog_token = dialog_token;
2308                 tf->u.setup_req.capability =
2309                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2310
2311                 ieee80211_add_srates_ie(&sdata->vif, skb);
2312                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2313                 ieee80211_tdls_add_ext_capab(skb);
2314                 break;
2315         case WLAN_TDLS_SETUP_RESPONSE:
2316                 tf->category = WLAN_CATEGORY_TDLS;
2317                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2318
2319                 skb_put(skb, sizeof(tf->u.setup_resp));
2320                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2321                 tf->u.setup_resp.dialog_token = dialog_token;
2322                 tf->u.setup_resp.capability =
2323                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2324
2325                 ieee80211_add_srates_ie(&sdata->vif, skb);
2326                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2327                 ieee80211_tdls_add_ext_capab(skb);
2328                 break;
2329         case WLAN_TDLS_SETUP_CONFIRM:
2330                 tf->category = WLAN_CATEGORY_TDLS;
2331                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2332
2333                 skb_put(skb, sizeof(tf->u.setup_cfm));
2334                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2335                 tf->u.setup_cfm.dialog_token = dialog_token;
2336                 break;
2337         case WLAN_TDLS_TEARDOWN:
2338                 tf->category = WLAN_CATEGORY_TDLS;
2339                 tf->action_code = WLAN_TDLS_TEARDOWN;
2340
2341                 skb_put(skb, sizeof(tf->u.teardown));
2342                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2343                 break;
2344         case WLAN_TDLS_DISCOVERY_REQUEST:
2345                 tf->category = WLAN_CATEGORY_TDLS;
2346                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2347
2348                 skb_put(skb, sizeof(tf->u.discover_req));
2349                 tf->u.discover_req.dialog_token = dialog_token;
2350                 break;
2351         default:
2352                 return -EINVAL;
2353         }
2354
2355         return 0;
2356 }
2357
2358 static int
2359 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2360                            u8 *peer, u8 action_code, u8 dialog_token,
2361                            u16 status_code, struct sk_buff *skb)
2362 {
2363         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2364         struct ieee80211_mgmt *mgmt;
2365
2366         mgmt = (void *)skb_put(skb, 24);
2367         memset(mgmt, 0, 24);
2368         memcpy(mgmt->da, peer, ETH_ALEN);
2369         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2370         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2371
2372         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2373                                           IEEE80211_STYPE_ACTION);
2374
2375         switch (action_code) {
2376         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2377                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2378                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2379                 mgmt->u.action.u.tdls_discover_resp.action_code =
2380                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2381                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2382                         dialog_token;
2383                 mgmt->u.action.u.tdls_discover_resp.capability =
2384                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2385
2386                 ieee80211_add_srates_ie(&sdata->vif, skb);
2387                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2388                 ieee80211_tdls_add_ext_capab(skb);
2389                 break;
2390         default:
2391                 return -EINVAL;
2392         }
2393
2394         return 0;
2395 }
2396
2397 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2398                                u8 *peer, u8 action_code, u8 dialog_token,
2399                                u16 status_code, const u8 *extra_ies,
2400                                size_t extra_ies_len)
2401 {
2402         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2403         struct ieee80211_local *local = sdata->local;
2404         struct ieee80211_tx_info *info;
2405         struct sk_buff *skb = NULL;
2406         bool send_direct;
2407         int ret;
2408
2409         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2410                 return -ENOTSUPP;
2411
2412         /* make sure we are in managed mode, and associated */
2413         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2414             !sdata->u.mgd.associated)
2415                 return -EINVAL;
2416
2417 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2418         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2419 #endif
2420
2421         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2422                             max(sizeof(struct ieee80211_mgmt),
2423                                 sizeof(struct ieee80211_tdls_data)) +
2424                             50 + /* supported rates */
2425                             7 + /* ext capab */
2426                             extra_ies_len +
2427                             sizeof(struct ieee80211_tdls_lnkie));
2428         if (!skb)
2429                 return -ENOMEM;
2430
2431         info = IEEE80211_SKB_CB(skb);
2432         skb_reserve(skb, local->hw.extra_tx_headroom);
2433
2434         switch (action_code) {
2435         case WLAN_TDLS_SETUP_REQUEST:
2436         case WLAN_TDLS_SETUP_RESPONSE:
2437         case WLAN_TDLS_SETUP_CONFIRM:
2438         case WLAN_TDLS_TEARDOWN:
2439         case WLAN_TDLS_DISCOVERY_REQUEST:
2440                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2441                                                      action_code, dialog_token,
2442                                                      status_code, skb);
2443                 send_direct = false;
2444                 break;
2445         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2446                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2447                                                  dialog_token, status_code,
2448                                                  skb);
2449                 send_direct = true;
2450                 break;
2451         default:
2452                 ret = -ENOTSUPP;
2453                 break;
2454         }
2455
2456         if (ret < 0)
2457                 goto fail;
2458
2459         if (extra_ies_len)
2460                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2461
2462         /* the TDLS link IE is always added last */
2463         switch (action_code) {
2464         case WLAN_TDLS_SETUP_REQUEST:
2465         case WLAN_TDLS_SETUP_CONFIRM:
2466         case WLAN_TDLS_TEARDOWN:
2467         case WLAN_TDLS_DISCOVERY_REQUEST:
2468                 /* we are the initiator */
2469                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2470                                            sdata->u.mgd.bssid);
2471                 break;
2472         case WLAN_TDLS_SETUP_RESPONSE:
2473         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2474                 /* we are the responder */
2475                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2476                                            sdata->u.mgd.bssid);
2477                 break;
2478         default:
2479                 ret = -ENOTSUPP;
2480                 goto fail;
2481         }
2482
2483         if (send_direct) {
2484                 ieee80211_tx_skb(sdata, skb);
2485                 return 0;
2486         }
2487
2488         /*
2489          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2490          * we should default to AC_VI.
2491          */
2492         switch (action_code) {
2493         case WLAN_TDLS_SETUP_REQUEST:
2494         case WLAN_TDLS_SETUP_RESPONSE:
2495                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2496                 skb->priority = 2;
2497                 break;
2498         default:
2499                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2500                 skb->priority = 5;
2501                 break;
2502         }
2503
2504         /* disable bottom halves when entering the Tx path */
2505         local_bh_disable();
2506         ret = ieee80211_subif_start_xmit(skb, dev);
2507         local_bh_enable();
2508
2509         return ret;
2510
2511 fail:
2512         dev_kfree_skb(skb);
2513         return ret;
2514 }
2515
2516 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2517                                u8 *peer, enum nl80211_tdls_operation oper)
2518 {
2519         struct sta_info *sta;
2520         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2521
2522         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2523                 return -ENOTSUPP;
2524
2525         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2526                 return -EINVAL;
2527
2528 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2529         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2530 #endif
2531
2532         switch (oper) {
2533         case NL80211_TDLS_ENABLE_LINK:
2534                 rcu_read_lock();
2535                 sta = sta_info_get(sdata, peer);
2536                 if (!sta) {
2537                         rcu_read_unlock();
2538                         return -ENOLINK;
2539                 }
2540
2541                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2542                 rcu_read_unlock();
2543                 break;
2544         case NL80211_TDLS_DISABLE_LINK:
2545                 return sta_info_destroy_addr(sdata, peer);
2546         case NL80211_TDLS_TEARDOWN:
2547         case NL80211_TDLS_SETUP:
2548         case NL80211_TDLS_DISCOVERY_REQ:
2549                 /* We don't support in-driver setup/teardown/discovery */
2550                 return -ENOTSUPP;
2551         default:
2552                 return -ENOTSUPP;
2553         }
2554
2555         return 0;
2556 }
2557
2558 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2559                                   const u8 *peer, u64 *cookie)
2560 {
2561         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2562         struct ieee80211_local *local = sdata->local;
2563         struct ieee80211_qos_hdr *nullfunc;
2564         struct sk_buff *skb;
2565         int size = sizeof(*nullfunc);
2566         __le16 fc;
2567         bool qos;
2568         struct ieee80211_tx_info *info;
2569         struct sta_info *sta;
2570
2571         rcu_read_lock();
2572         sta = sta_info_get(sdata, peer);
2573         if (sta) {
2574                 qos = test_sta_flag(sta, WLAN_STA_WME);
2575                 rcu_read_unlock();
2576         } else {
2577                 rcu_read_unlock();
2578                 return -ENOLINK;
2579         }
2580
2581         if (qos) {
2582                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2583                                  IEEE80211_STYPE_QOS_NULLFUNC |
2584                                  IEEE80211_FCTL_FROMDS);
2585         } else {
2586                 size -= 2;
2587                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2588                                  IEEE80211_STYPE_NULLFUNC |
2589                                  IEEE80211_FCTL_FROMDS);
2590         }
2591
2592         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2593         if (!skb)
2594                 return -ENOMEM;
2595
2596         skb->dev = dev;
2597
2598         skb_reserve(skb, local->hw.extra_tx_headroom);
2599
2600         nullfunc = (void *) skb_put(skb, size);
2601         nullfunc->frame_control = fc;
2602         nullfunc->duration_id = 0;
2603         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2604         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2605         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2606         nullfunc->seq_ctrl = 0;
2607
2608         info = IEEE80211_SKB_CB(skb);
2609
2610         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2611                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2612
2613         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2614         skb->priority = 7;
2615         if (qos)
2616                 nullfunc->qos_ctrl = cpu_to_le16(7);
2617
2618         local_bh_disable();
2619         ieee80211_xmit(sdata, skb);
2620         local_bh_enable();
2621
2622         *cookie = (unsigned long) skb;
2623         return 0;
2624 }
2625
2626 static struct ieee80211_channel *
2627 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2628 {
2629         struct ieee80211_local *local = wiphy_priv(wiphy);
2630
2631         return local->oper_channel;
2632 }
2633
2634 struct cfg80211_ops mac80211_config_ops = {
2635         .add_virtual_intf = ieee80211_add_iface,
2636         .del_virtual_intf = ieee80211_del_iface,
2637         .change_virtual_intf = ieee80211_change_iface,
2638         .add_key = ieee80211_add_key,
2639         .del_key = ieee80211_del_key,
2640         .get_key = ieee80211_get_key,
2641         .set_default_key = ieee80211_config_default_key,
2642         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2643         .add_beacon = ieee80211_add_beacon,
2644         .set_beacon = ieee80211_set_beacon,
2645         .del_beacon = ieee80211_del_beacon,
2646         .add_station = ieee80211_add_station,
2647         .del_station = ieee80211_del_station,
2648         .change_station = ieee80211_change_station,
2649         .get_station = ieee80211_get_station,
2650         .dump_station = ieee80211_dump_station,
2651         .dump_survey = ieee80211_dump_survey,
2652 #ifdef CONFIG_MAC80211_MESH
2653         .add_mpath = ieee80211_add_mpath,
2654         .del_mpath = ieee80211_del_mpath,
2655         .change_mpath = ieee80211_change_mpath,
2656         .get_mpath = ieee80211_get_mpath,
2657         .dump_mpath = ieee80211_dump_mpath,
2658         .update_mesh_config = ieee80211_update_mesh_config,
2659         .get_mesh_config = ieee80211_get_mesh_config,
2660         .join_mesh = ieee80211_join_mesh,
2661         .leave_mesh = ieee80211_leave_mesh,
2662 #endif
2663         .change_bss = ieee80211_change_bss,
2664         .set_txq_params = ieee80211_set_txq_params,
2665         .set_channel = ieee80211_set_channel,
2666         .suspend = ieee80211_suspend,
2667         .resume = ieee80211_resume,
2668         .scan = ieee80211_scan,
2669         .sched_scan_start = ieee80211_sched_scan_start,
2670         .sched_scan_stop = ieee80211_sched_scan_stop,
2671         .auth = ieee80211_auth,
2672         .assoc = ieee80211_assoc,
2673         .deauth = ieee80211_deauth,
2674         .disassoc = ieee80211_disassoc,
2675         .join_ibss = ieee80211_join_ibss,
2676         .leave_ibss = ieee80211_leave_ibss,
2677         .set_wiphy_params = ieee80211_set_wiphy_params,
2678         .set_tx_power = ieee80211_set_tx_power,
2679         .get_tx_power = ieee80211_get_tx_power,
2680         .set_wds_peer = ieee80211_set_wds_peer,
2681         .rfkill_poll = ieee80211_rfkill_poll,
2682         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2683         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2684         .set_power_mgmt = ieee80211_set_power_mgmt,
2685         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2686         .remain_on_channel = ieee80211_remain_on_channel,
2687         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2688         .mgmt_tx = ieee80211_mgmt_tx,
2689         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2690         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2691         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2692         .set_antenna = ieee80211_set_antenna,
2693         .get_antenna = ieee80211_get_antenna,
2694         .set_ringparam = ieee80211_set_ringparam,
2695         .get_ringparam = ieee80211_get_ringparam,
2696         .set_rekey_data = ieee80211_set_rekey_data,
2697         .tdls_oper = ieee80211_tdls_oper,
2698         .tdls_mgmt = ieee80211_tdls_mgmt,
2699         .probe_client = ieee80211_probe_client,
2700         .get_channel = ieee80211_wiphy_get_channel,
2701 };