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_set_noack_map(struct wiphy *wiphy,
 106                                   struct net_device *dev,
 107                                   u16 noack_map)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         sdata->noack_map = noack_map;
 112         return 0;
 113 }
 114
 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 116                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 117                              struct key_params *params)
 118 {
 119         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 120         struct sta_info *sta = NULL;
 121         struct ieee80211_key *key;
 122         int err;
 123
 124         if (!ieee80211_sdata_running(sdata))
 125                 return -ENETDOWN;
 126
 127         /* reject WEP and TKIP keys if WEP failed to initialize */
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_TKIP:
 131         case WLAN_CIPHER_SUITE_WEP104:
 132                 if (IS_ERR(sdata->local->wep_tx_tfm))
 133                         return -EINVAL;
 134                 break;
 135         default:
 136                 break;
 137         }
 138
 139         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 140                                   params->key, params->seq_len, params->seq);
 141         if (IS_ERR(key))
 142                 return PTR_ERR(key);
 143
 144         if (pairwise)
 145                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 146
 147         mutex_lock(&sdata->local->sta_mtx);
 148
 149         if (mac_addr) {
 150                 if (ieee80211_vif_is_mesh(&sdata->vif))
 151                         sta = sta_info_get(sdata, mac_addr);
 152                 else
 153                         sta = sta_info_get_bss(sdata, mac_addr);
 154                 if (!sta) {
 155                         ieee80211_key_free(sdata->local, key);
 156                         err = -ENOENT;
 157                         goto out_unlock;
 158                 }
 159         }
 160
 161         err = ieee80211_key_link(key, sdata, sta);
 162         if (err)
 163                 ieee80211_key_free(sdata->local, key);
 164
 165  out_unlock:
 166         mutex_unlock(&sdata->local->sta_mtx);
 167
 168         return err;
 169 }
 170
 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 172                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 173 {
 174         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 175         struct ieee80211_local *local = sdata->local;
 176         struct sta_info *sta;
 177         struct ieee80211_key *key = NULL;
 178         int ret;
 179
 180         mutex_lock(&local->sta_mtx);
 181         mutex_lock(&local->key_mtx);
 182
 183         if (mac_addr) {
 184                 ret = -ENOENT;
 185
 186                 sta = sta_info_get_bss(sdata, mac_addr);
 187                 if (!sta)
 188                         goto out_unlock;
 189
 190                 if (pairwise)
 191                         key = key_mtx_dereference(local, sta->ptk);
 192                 else
 193                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 194         } else
 195                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 196
 197         if (!key) {
 198                 ret = -ENOENT;
 199                 goto out_unlock;
 200         }
 201
 202         __ieee80211_key_free(key);
 203
 204         ret = 0;
 205  out_unlock:
 206         mutex_unlock(&local->key_mtx);
 207         mutex_unlock(&local->sta_mtx);
 208
 209         return ret;
 210 }
 211
 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 213                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 214                              void *cookie,
 215                              void (*callback)(void *cookie,
 216                                               struct key_params *params))
 217 {
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta = NULL;
 220         u8 seq[6] = {0};
 221         struct key_params params;
 222         struct ieee80211_key *key = NULL;
 223         u64 pn64;
 224         u32 iv32;
 225         u16 iv16;
 226         int err = -ENOENT;
 227
 228         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 229
 230         rcu_read_lock();
 231
 232         if (mac_addr) {
 233                 sta = sta_info_get_bss(sdata, mac_addr);
 234                 if (!sta)
 235                         goto out;
 236
 237                 if (pairwise)
 238                         key = rcu_dereference(sta->ptk);
 239                 else if (key_idx < NUM_DEFAULT_KEYS)
 240                         key = rcu_dereference(sta->gtk[key_idx]);
 241         } else
 242                 key = rcu_dereference(sdata->keys[key_idx]);
 243
 244         if (!key)
 245                 goto out;
 246
 247         memset(&params, 0, sizeof(params));
 248
 249         params.cipher = key->conf.cipher;
 250
 251         switch (key->conf.cipher) {
 252         case WLAN_CIPHER_SUITE_TKIP:
 253                 iv32 = key->u.tkip.tx.iv32;
 254                 iv16 = key->u.tkip.tx.iv16;
 255
 256                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 257                         drv_get_tkip_seq(sdata->local,
 258                                          key->conf.hw_key_idx,
 259                                          &iv32, &iv16);
 260
 261                 seq[0] = iv16 & 0xff;
 262                 seq[1] = (iv16 >> 8) & 0xff;
 263                 seq[2] = iv32 & 0xff;
 264                 seq[3] = (iv32 >> 8) & 0xff;
 265                 seq[4] = (iv32 >> 16) & 0xff;
 266                 seq[5] = (iv32 >> 24) & 0xff;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_CCMP:
 271                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         case WLAN_CIPHER_SUITE_AES_CMAC:
 282                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 283                 seq[0] = pn64;
 284                 seq[1] = pn64 >> 8;
 285                 seq[2] = pn64 >> 16;
 286                 seq[3] = pn64 >> 24;
 287                 seq[4] = pn64 >> 32;
 288                 seq[5] = pn64 >> 40;
 289                 params.seq = seq;
 290                 params.seq_len = 6;
 291                 break;
 292         }
 293
 294         params.key = key->conf.key;
 295         params.key_len = key->conf.keylen;
 296
 297         callback(cookie, &params);
 298         err = 0;
 299
 300  out:
 301         rcu_read_unlock();
 302         return err;
 303 }
 304
 305 static int ieee80211_config_default_key(struct wiphy *wiphy,
 306                                         struct net_device *dev,
 307                                         u8 key_idx, bool uni,
 308                                         bool multi)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 313
 314         return 0;
 315 }
 316
 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 318                                              struct net_device *dev,
 319                                              u8 key_idx)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 322
 323         ieee80211_set_default_mgmt_key(sdata, key_idx);
 324
 325         return 0;
 326 }
 327
 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 329 {
 330         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 331                 struct ieee80211_supported_band *sband;
 332                 sband = sta->local->hw.wiphy->bands[
 333                                 sta->local->hw.conf.channel->band];
 334                 rate->legacy = sband->bitrates[idx].bitrate;
 335         } else
 336                 rate->mcs = idx;
 337 }
 338
 339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 340 {
 341         struct ieee80211_sub_if_data *sdata = sta->sdata;
 342         struct timespec uptime;
 343
 344         sinfo->generation = sdata->local->sta_generation;
 345
 346         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 347                         STATION_INFO_RX_BYTES |
 348                         STATION_INFO_TX_BYTES |
 349                         STATION_INFO_RX_PACKETS |
 350                         STATION_INFO_TX_PACKETS |
 351                         STATION_INFO_TX_RETRIES |
 352                         STATION_INFO_TX_FAILED |
 353                         STATION_INFO_TX_BITRATE |
 354                         STATION_INFO_RX_BITRATE |
 355                         STATION_INFO_RX_DROP_MISC |
 356                         STATION_INFO_BSS_PARAM |
 357                         STATION_INFO_CONNECTED_TIME |
 358                         STATION_INFO_STA_FLAGS;
 359
 360         do_posix_clock_monotonic_gettime(&uptime);
 361         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 362
 363         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 364         sinfo->rx_bytes = sta->rx_bytes;
 365         sinfo->tx_bytes = sta->tx_bytes;
 366         sinfo->rx_packets = sta->rx_packets;
 367         sinfo->tx_packets = sta->tx_packets;
 368         sinfo->tx_retries = sta->tx_retry_count;
 369         sinfo->tx_failed = sta->tx_retry_failed;
 370         sinfo->rx_dropped_misc = sta->rx_dropped;
 371
 372         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 373             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 374                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 375                 sinfo->signal = (s8)sta->last_signal;
 376                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 377         }
 378
 379         sinfo->txrate.flags = 0;
 380         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 381                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 382         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 383                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 384         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 385                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 386         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 387
 388         sinfo->rxrate.flags = 0;
 389         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 390                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 391         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 392                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 393         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 394                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 395         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 396
 397         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 398 #ifdef CONFIG_MAC80211_MESH
 399                 sinfo->filled |= STATION_INFO_LLID |
 400                                  STATION_INFO_PLID |
 401                                  STATION_INFO_PLINK_STATE;
 402
 403                 sinfo->llid = le16_to_cpu(sta->llid);
 404                 sinfo->plid = le16_to_cpu(sta->plid);
 405                 sinfo->plink_state = sta->plink_state;
 406 #endif
 407         }
 408
 409         sinfo->bss_param.flags = 0;
 410         if (sdata->vif.bss_conf.use_cts_prot)
 411                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 412         if (sdata->vif.bss_conf.use_short_preamble)
 413                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 414         if (sdata->vif.bss_conf.use_short_slot)
 415                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 416         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 417         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 418
 419         sinfo->sta_flags.set = 0;
 420         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 421                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 422                                 BIT(NL80211_STA_FLAG_WME) |
 423                                 BIT(NL80211_STA_FLAG_MFP) |
 424                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 425                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 426         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 427                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 428         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 429                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 430         if (test_sta_flag(sta, WLAN_STA_WME))
 431                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 432         if (test_sta_flag(sta, WLAN_STA_MFP))
 433                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 434         if (test_sta_flag(sta, WLAN_STA_AUTH))
 435                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 436         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 437                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 438 }
 439
 440
 441 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 442                                  int idx, u8 *mac, struct station_info *sinfo)
 443 {
 444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 445         struct sta_info *sta;
 446         int ret = -ENOENT;
 447
 448         rcu_read_lock();
 449
 450         sta = sta_info_get_by_idx(sdata, idx);
 451         if (sta) {
 452                 ret = 0;
 453                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 454                 sta_set_sinfo(sta, sinfo);
 455         }
 456
 457         rcu_read_unlock();
 458
 459         return ret;
 460 }
 461
 462 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 463                                  int idx, struct survey_info *survey)
 464 {
 465         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 466
 467         return drv_get_survey(local, idx, survey);
 468 }
 469
 470 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 471                                  u8 *mac, struct station_info *sinfo)
 472 {
 473         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 474         struct sta_info *sta;
 475         int ret = -ENOENT;
 476
 477         rcu_read_lock();
 478
 479         sta = sta_info_get_bss(sdata, mac);
 480         if (sta) {
 481                 ret = 0;
 482                 sta_set_sinfo(sta, sinfo);
 483         }
 484
 485         rcu_read_unlock();
 486
 487         return ret;
 488 }
 489
 490 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 491                                      struct beacon_parameters *params)
 492 {
 493         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 494
 495         bss_conf->ssid_len = params->ssid_len;
 496
 497         if (params->ssid_len)
 498                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 499
 500         bss_conf->hidden_ssid =
 501                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 502 }
 503
 504 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 505                                     u8 *resp, size_t resp_len)
 506 {
 507         struct sk_buff *new, *old;
 508
 509         if (!resp || !resp_len)
 510                 return -EINVAL;
 511
 512         old = sdata->u.ap.probe_resp;
 513
 514         new = dev_alloc_skb(resp_len);
 515         if (!new)
 516                 return -ENOMEM;
 517
 518         memcpy(skb_put(new, resp_len), resp, resp_len);
 519
 520         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 521         synchronize_rcu();
 522
 523         if (old)
 524                 dev_kfree_skb(old);
 525
 526         return 0;
 527 }
 528
 529 /*
 530  * This handles both adding a beacon and setting new beacon info
 531  */
 532 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 533                                    struct beacon_parameters *params)
 534 {
 535         struct beacon_data *new, *old;
 536         int new_head_len, new_tail_len;
 537         int size;
 538         int err = -EINVAL;
 539         u32 changed = 0;
 540
 541         old = rtnl_dereference(sdata->u.ap.beacon);
 542
 543         /* head must not be zero-length */
 544         if (params->head && !params->head_len)
 545                 return -EINVAL;
 546
 547         /*
 548          * This is a kludge. beacon interval should really be part
 549          * of the beacon information.
 550          */
 551         if (params->interval &&
 552             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 553                 sdata->vif.bss_conf.beacon_int = params->interval;
 554                 ieee80211_bss_info_change_notify(sdata,
 555                                                  BSS_CHANGED_BEACON_INT);
 556         }
 557
 558         /* Need to have a beacon head if we don't have one yet */
 559         if (!params->head && !old)
 560                 return err;
 561
 562         /* sorry, no way to start beaconing without dtim period */
 563         if (!params->dtim_period && !old)
 564                 return err;
 565
 566         /* new or old head? */
 567         if (params->head)
 568                 new_head_len = params->head_len;
 569         else
 570                 new_head_len = old->head_len;
 571
 572         /* new or old tail? */
 573         if (params->tail || !old)
 574                 /* params->tail_len will be zero for !params->tail */
 575                 new_tail_len = params->tail_len;
 576         else
 577                 new_tail_len = old->tail_len;
 578
 579         size = sizeof(*new) + new_head_len + new_tail_len;
 580
 581         new = kzalloc(size, GFP_KERNEL);
 582         if (!new)
 583                 return -ENOMEM;
 584
 585         /* start filling the new info now */
 586
 587         /* new or old dtim period? */
 588         if (params->dtim_period)
 589                 new->dtim_period = params->dtim_period;
 590         else
 591                 new->dtim_period = old->dtim_period;
 592
 593         /*
 594          * pointers go into the block we allocated,
 595          * memory is | beacon_data | head | tail |
 596          */
 597         new->head = ((u8 *) new) + sizeof(*new);
 598         new->tail = new->head + new_head_len;
 599         new->head_len = new_head_len;
 600         new->tail_len = new_tail_len;
 601
 602         /* copy in head */
 603         if (params->head)
 604                 memcpy(new->head, params->head, new_head_len);
 605         else
 606                 memcpy(new->head, old->head, new_head_len);
 607
 608         /* copy in optional tail */
 609         if (params->tail)
 610                 memcpy(new->tail, params->tail, new_tail_len);
 611         else
 612                 if (old)
 613                         memcpy(new->tail, old->tail, new_tail_len);
 614
 615         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 616
 617         RCU_INIT_POINTER(sdata->u.ap.beacon, new);
 618
 619         synchronize_rcu();
 620
 621         kfree(old);
 622
 623         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 624                                        params->probe_resp_len);
 625         if (!err)
 626                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 627
 628         ieee80211_config_ap_ssid(sdata, params);
 629         changed |= BSS_CHANGED_BEACON_ENABLED |
 630                    BSS_CHANGED_BEACON |
 631                    BSS_CHANGED_SSID;
 632
 633         ieee80211_bss_info_change_notify(sdata, changed);
 634         return 0;
 635 }
 636
 637 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 638                                 struct beacon_parameters *params)
 639 {
 640         struct ieee80211_sub_if_data *sdata;
 641         struct beacon_data *old;
 642         struct ieee80211_sub_if_data *vlan;
 643         int ret;
 644
 645         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 646
 647         old = rtnl_dereference(sdata->u.ap.beacon);
 648         if (old)
 649                 return -EALREADY;
 650
 651         ret = ieee80211_config_beacon(sdata, params);
 652         if (ret)
 653                 return ret;
 654
 655         /*
 656          * Apply control port protocol, this allows us to
 657          * not encrypt dynamic WEP control frames.
 658          */
 659         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 660         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 661         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 662                 vlan->control_port_protocol =
 663                         params->crypto.control_port_ethertype;
 664                 vlan->control_port_no_encrypt =
 665                         params->crypto.control_port_no_encrypt;
 666         }
 667
 668         return 0;
 669 }
 670
 671 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 672                                 struct beacon_parameters *params)
 673 {
 674         struct ieee80211_sub_if_data *sdata;
 675         struct beacon_data *old;
 676
 677         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 678
 679         old = rtnl_dereference(sdata->u.ap.beacon);
 680         if (!old)
 681                 return -ENOENT;
 682
 683         return ieee80211_config_beacon(sdata, params);
 684 }
 685
 686 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 687 {
 688         struct ieee80211_sub_if_data *sdata;
 689         struct beacon_data *old;
 690
 691         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 692
 693         old = rtnl_dereference(sdata->u.ap.beacon);
 694         if (!old)
 695                 return -ENOENT;
 696
 697         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 698         synchronize_rcu();
 699         kfree(old);
 700
 701         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 702         return 0;
 703 }
 704
 705 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 706 struct iapp_layer2_update {
 707         u8 da[ETH_ALEN];        /* broadcast */
 708         u8 sa[ETH_ALEN];        /* STA addr */
 709         __be16 len;             /* 6 */
 710         u8 dsap;                /* 0 */
 711         u8 ssap;                /* 0 */
 712         u8 control;
 713         u8 xid_info[3];
 714 } __packed;
 715
 716 static void ieee80211_send_layer2_update(struct sta_info *sta)
 717 {
 718         struct iapp_layer2_update *msg;
 719         struct sk_buff *skb;
 720
 721         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 722          * bridge devices */
 723
 724         skb = dev_alloc_skb(sizeof(*msg));
 725         if (!skb)
 726                 return;
 727         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 728
 729         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 730          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 731
 732         memset(msg->da, 0xff, ETH_ALEN);
 733         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 734         msg->len = htons(6);
 735         msg->dsap = 0;
 736         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 737         msg->control = 0xaf;    /* XID response lsb.1111F101.
 738                                  * F=0 (no poll command; unsolicited frame) */
 739         msg->xid_info[0] = 0x81;        /* XID format identifier */
 740         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 741         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 742
 743         skb->dev = sta->sdata->dev;
 744         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 745         memset(skb->cb, 0, sizeof(skb->cb));
 746         netif_rx_ni(skb);
 747 }
 748
 749 static void sta_apply_parameters(struct ieee80211_local *local,
 750                                  struct sta_info *sta,
 751                                  struct station_parameters *params)
 752 {
 753         u32 rates;
 754         int i, j;
 755         struct ieee80211_supported_band *sband;
 756         struct ieee80211_sub_if_data *sdata = sta->sdata;
 757         u32 mask, set;
 758
 759         sband = local->hw.wiphy->bands[local->oper_channel->band];
 760
 761         mask = params->sta_flags_mask;
 762         set = params->sta_flags_set;
 763
 764         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 765                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 766                         set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 767                 else
 768                         clear_sta_flag(sta, WLAN_STA_AUTHORIZED);
 769         }
 770
 771         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 772                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 773                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 774                 else
 775                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 776         }
 777
 778         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 779                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 780                         set_sta_flag(sta, WLAN_STA_WME);
 781                         sta->sta.wme = true;
 782                 } else {
 783                         clear_sta_flag(sta, WLAN_STA_WME);
 784                         sta->sta.wme = false;
 785                 }
 786         }
 787
 788         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 789                 if (set & BIT(NL80211_STA_FLAG_MFP))
 790                         set_sta_flag(sta, WLAN_STA_MFP);
 791                 else
 792                         clear_sta_flag(sta, WLAN_STA_MFP);
 793         }
 794
 795         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 796                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 797                         set_sta_flag(sta, WLAN_STA_AUTH);
 798                 else
 799                         clear_sta_flag(sta, WLAN_STA_AUTH);
 800         }
 801
 802         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 803                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 804                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 805                 else
 806                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 807         }
 808
 809         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 810                 sta->sta.uapsd_queues = params->uapsd_queues;
 811                 sta->sta.max_sp = params->max_sp;
 812         }
 813
 814         /*
 815          * cfg80211 validates this (1-2007) and allows setting the AID
 816          * only when creating a new station entry
 817          */
 818         if (params->aid)
 819                 sta->sta.aid = params->aid;
 820
 821         /*
 822          * FIXME: updating the following information is racy when this
 823          *        function is called from ieee80211_change_station().
 824          *        However, all this information should be static so
 825          *        maybe we should just reject attemps to change it.
 826          */
 827
 828         if (params->listen_interval >= 0)
 829                 sta->listen_interval = params->listen_interval;
 830
 831         if (params->supported_rates) {
 832                 rates = 0;
 833
 834                 for (i = 0; i < params->supported_rates_len; i++) {
 835                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 836                         for (j = 0; j < sband->n_bitrates; j++) {
 837                                 if (sband->bitrates[j].bitrate == rate)
 838                                         rates |= BIT(j);
 839                         }
 840                 }
 841                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 842         }
 843
 844         if (params->ht_capa)
 845                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 846                                                   params->ht_capa,
 847                                                   &sta->sta.ht_cap);
 848
 849         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 850 #ifdef CONFIG_MAC80211_MESH
 851                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 852                         switch (params->plink_state) {
 853                         case NL80211_PLINK_LISTEN:
 854                         case NL80211_PLINK_ESTAB:
 855                         case NL80211_PLINK_BLOCKED:
 856                                 sta->plink_state = params->plink_state;
 857                                 break;
 858                         default:
 859                                 /*  nothing  */
 860                                 break;
 861                         }
 862                 else
 863                         switch (params->plink_action) {
 864                         case PLINK_ACTION_OPEN:
 865                                 mesh_plink_open(sta);
 866                                 break;
 867                         case PLINK_ACTION_BLOCK:
 868                                 mesh_plink_block(sta);
 869                                 break;
 870                         }
 871 #endif
 872         }
 873 }
 874
 875 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 876                                  u8 *mac, struct station_parameters *params)
 877 {
 878         struct ieee80211_local *local = wiphy_priv(wiphy);
 879         struct sta_info *sta;
 880         struct ieee80211_sub_if_data *sdata;
 881         int err;
 882         int layer2_update;
 883
 884         if (params->vlan) {
 885                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 886
 887                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 888                     sdata->vif.type != NL80211_IFTYPE_AP)
 889                         return -EINVAL;
 890         } else
 891                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 892
 893         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 894                 return -EINVAL;
 895
 896         if (is_multicast_ether_addr(mac))
 897                 return -EINVAL;
 898
 899         /* Only TDLS-supporting stations can add TDLS peers */
 900         if ((params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 901             !((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
 902               sdata->vif.type == NL80211_IFTYPE_STATION))
 903                 return -ENOTSUPP;
 904
 905         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 906         if (!sta)
 907                 return -ENOMEM;
 908
 909         set_sta_flag(sta, WLAN_STA_AUTH);
 910         set_sta_flag(sta, WLAN_STA_ASSOC);
 911
 912         sta_apply_parameters(local, sta, params);
 913
 914         /*
 915          * for TDLS, rate control should be initialized only when supported
 916          * rates are known.
 917          */
 918         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 919                 rate_control_rate_init(sta);
 920
 921         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 922                 sdata->vif.type == NL80211_IFTYPE_AP;
 923
 924         err = sta_info_insert_rcu(sta);
 925         if (err) {
 926                 rcu_read_unlock();
 927                 return err;
 928         }
 929
 930         if (layer2_update)
 931                 ieee80211_send_layer2_update(sta);
 932
 933         rcu_read_unlock();
 934
 935         return 0;
 936 }
 937
 938 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 939                                  u8 *mac)
 940 {
 941         struct ieee80211_local *local = wiphy_priv(wiphy);
 942         struct ieee80211_sub_if_data *sdata;
 943
 944         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 945
 946         if (mac)
 947                 return sta_info_destroy_addr_bss(sdata, mac);
 948
 949         sta_info_flush(local, sdata);
 950         return 0;
 951 }
 952
 953 static int ieee80211_change_station(struct wiphy *wiphy,
 954                                     struct net_device *dev,
 955                                     u8 *mac,
 956                                     struct station_parameters *params)
 957 {
 958         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 959         struct ieee80211_local *local = wiphy_priv(wiphy);
 960         struct sta_info *sta;
 961         struct ieee80211_sub_if_data *vlansdata;
 962
 963         rcu_read_lock();
 964
 965         sta = sta_info_get_bss(sdata, mac);
 966         if (!sta) {
 967                 rcu_read_unlock();
 968                 return -ENOENT;
 969         }
 970
 971         /* The TDLS bit cannot be toggled after the STA was added */
 972         if ((params->sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 973             !!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) !=
 974             !!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 975                 rcu_read_unlock();
 976                 return -EINVAL;
 977         }
 978
 979         if (params->vlan && params->vlan != sta->sdata->dev) {
 980                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 981
 982                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 983                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 984                         rcu_read_unlock();
 985                         return -EINVAL;
 986                 }
 987
 988                 if (params->vlan->ieee80211_ptr->use_4addr) {
 989                         if (vlansdata->u.vlan.sta) {
 990                                 rcu_read_unlock();
 991                                 return -EBUSY;
 992                         }
 993
 994                         RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta);
 995                 }
 996
 997                 sta->sdata = vlansdata;
 998                 ieee80211_send_layer2_update(sta);
 999         }
1000
1001         sta_apply_parameters(local, sta, params);
1002
1003         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1004                 rate_control_rate_init(sta);
1005
1006         rcu_read_unlock();
1007
1008         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1009             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1010                 ieee80211_recalc_ps(local, -1);
1011
1012         return 0;
1013 }
1014
1015 #ifdef CONFIG_MAC80211_MESH
1016 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1017                                  u8 *dst, u8 *next_hop)
1018 {
1019         struct ieee80211_sub_if_data *sdata;
1020         struct mesh_path *mpath;
1021         struct sta_info *sta;
1022         int err;
1023
1024         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1025
1026         rcu_read_lock();
1027         sta = sta_info_get(sdata, next_hop);
1028         if (!sta) {
1029                 rcu_read_unlock();
1030                 return -ENOENT;
1031         }
1032
1033         err = mesh_path_add(dst, sdata);
1034         if (err) {
1035                 rcu_read_unlock();
1036                 return err;
1037         }
1038
1039         mpath = mesh_path_lookup(dst, sdata);
1040         if (!mpath) {
1041                 rcu_read_unlock();
1042                 return -ENXIO;
1043         }
1044         mesh_path_fix_nexthop(mpath, sta);
1045
1046         rcu_read_unlock();
1047         return 0;
1048 }
1049
1050 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1051                                  u8 *dst)
1052 {
1053         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1054
1055         if (dst)
1056                 return mesh_path_del(dst, sdata);
1057
1058         mesh_path_flush_by_iface(sdata);
1059         return 0;
1060 }
1061
1062 static int ieee80211_change_mpath(struct wiphy *wiphy,
1063                                     struct net_device *dev,
1064                                     u8 *dst, u8 *next_hop)
1065 {
1066         struct ieee80211_sub_if_data *sdata;
1067         struct mesh_path *mpath;
1068         struct sta_info *sta;
1069
1070         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1071
1072         rcu_read_lock();
1073
1074         sta = sta_info_get(sdata, next_hop);
1075         if (!sta) {
1076                 rcu_read_unlock();
1077                 return -ENOENT;
1078         }
1079
1080         mpath = mesh_path_lookup(dst, sdata);
1081         if (!mpath) {
1082                 rcu_read_unlock();
1083                 return -ENOENT;
1084         }
1085
1086         mesh_path_fix_nexthop(mpath, sta);
1087
1088         rcu_read_unlock();
1089         return 0;
1090 }
1091
1092 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1093                             struct mpath_info *pinfo)
1094 {
1095         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1096
1097         if (next_hop_sta)
1098                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1099         else
1100                 memset(next_hop, 0, ETH_ALEN);
1101
1102         pinfo->generation = mesh_paths_generation;
1103
1104         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1105                         MPATH_INFO_SN |
1106                         MPATH_INFO_METRIC |
1107                         MPATH_INFO_EXPTIME |
1108                         MPATH_INFO_DISCOVERY_TIMEOUT |
1109                         MPATH_INFO_DISCOVERY_RETRIES |
1110                         MPATH_INFO_FLAGS;
1111
1112         pinfo->frame_qlen = mpath->frame_queue.qlen;
1113         pinfo->sn = mpath->sn;
1114         pinfo->metric = mpath->metric;
1115         if (time_before(jiffies, mpath->exp_time))
1116                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1117         pinfo->discovery_timeout =
1118                         jiffies_to_msecs(mpath->discovery_timeout);
1119         pinfo->discovery_retries = mpath->discovery_retries;
1120         pinfo->flags = 0;
1121         if (mpath->flags & MESH_PATH_ACTIVE)
1122                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1123         if (mpath->flags & MESH_PATH_RESOLVING)
1124                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1125         if (mpath->flags & MESH_PATH_SN_VALID)
1126                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1127         if (mpath->flags & MESH_PATH_FIXED)
1128                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1129         if (mpath->flags & MESH_PATH_RESOLVING)
1130                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1131
1132         pinfo->flags = mpath->flags;
1133 }
1134
1135 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1136                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1137
1138 {
1139         struct ieee80211_sub_if_data *sdata;
1140         struct mesh_path *mpath;
1141
1142         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1143
1144         rcu_read_lock();
1145         mpath = mesh_path_lookup(dst, sdata);
1146         if (!mpath) {
1147                 rcu_read_unlock();
1148                 return -ENOENT;
1149         }
1150         memcpy(dst, mpath->dst, ETH_ALEN);
1151         mpath_set_pinfo(mpath, next_hop, pinfo);
1152         rcu_read_unlock();
1153         return 0;
1154 }
1155
1156 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1157                                  int idx, u8 *dst, u8 *next_hop,
1158                                  struct mpath_info *pinfo)
1159 {
1160         struct ieee80211_sub_if_data *sdata;
1161         struct mesh_path *mpath;
1162
1163         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1164
1165         rcu_read_lock();
1166         mpath = mesh_path_lookup_by_idx(idx, sdata);
1167         if (!mpath) {
1168                 rcu_read_unlock();
1169                 return -ENOENT;
1170         }
1171         memcpy(dst, mpath->dst, ETH_ALEN);
1172         mpath_set_pinfo(mpath, next_hop, pinfo);
1173         rcu_read_unlock();
1174         return 0;
1175 }
1176
1177 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1178                                 struct net_device *dev,
1179                                 struct mesh_config *conf)
1180 {
1181         struct ieee80211_sub_if_data *sdata;
1182         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1183
1184         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1185         return 0;
1186 }
1187
1188 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1189 {
1190         return (mask >> (parm-1)) & 0x1;
1191 }
1192
1193 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1194                 const struct mesh_setup *setup)
1195 {
1196         u8 *new_ie;
1197         const u8 *old_ie;
1198
1199         /* allocate information elements */
1200         new_ie = NULL;
1201         old_ie = ifmsh->ie;
1202
1203         if (setup->ie_len) {
1204                 new_ie = kmemdup(setup->ie, setup->ie_len,
1205                                 GFP_KERNEL);
1206                 if (!new_ie)
1207                         return -ENOMEM;
1208         }
1209         ifmsh->ie_len = setup->ie_len;
1210         ifmsh->ie = new_ie;
1211         kfree(old_ie);
1212
1213         /* now copy the rest of the setup parameters */
1214         ifmsh->mesh_id_len = setup->mesh_id_len;
1215         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1216         ifmsh->mesh_pp_id = setup->path_sel_proto;
1217         ifmsh->mesh_pm_id = setup->path_metric;
1218         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1219         if (setup->is_authenticated)
1220                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1221         if (setup->is_secure)
1222                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1223
1224         return 0;
1225 }
1226
1227 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1228                                         struct net_device *dev, u32 mask,
1229                                         const struct mesh_config *nconf)
1230 {
1231         struct mesh_config *conf;
1232         struct ieee80211_sub_if_data *sdata;
1233         struct ieee80211_if_mesh *ifmsh;
1234
1235         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1236         ifmsh = &sdata->u.mesh;
1237
1238         /* Set the config options which we are interested in setting */
1239         conf = &(sdata->u.mesh.mshcfg);
1240         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1241                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1242         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1243                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1244         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1245                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1246         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1247                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1248         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1249                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1250         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1251                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1252         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1253                 conf->dot11MeshTTL = nconf->element_ttl;
1254         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1255                 conf->auto_open_plinks = nconf->auto_open_plinks;
1256         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1257                 conf->dot11MeshHWMPmaxPREQretries =
1258                         nconf->dot11MeshHWMPmaxPREQretries;
1259         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1260                 conf->path_refresh_time = nconf->path_refresh_time;
1261         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1262                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1263         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1264                 conf->dot11MeshHWMPactivePathTimeout =
1265                         nconf->dot11MeshHWMPactivePathTimeout;
1266         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1267                 conf->dot11MeshHWMPpreqMinInterval =
1268                         nconf->dot11MeshHWMPpreqMinInterval;
1269         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1270                            mask))
1271                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1272                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1273         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1274                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1275                 ieee80211_mesh_root_setup(ifmsh);
1276         }
1277         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1278                 /* our current gate announcement implementation rides on root
1279                  * announcements, so require this ifmsh to also be a root node
1280                  * */
1281                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1282                     !conf->dot11MeshHWMPRootMode) {
1283                         conf->dot11MeshHWMPRootMode = 1;
1284                         ieee80211_mesh_root_setup(ifmsh);
1285                 }
1286                 conf->dot11MeshGateAnnouncementProtocol =
1287                         nconf->dot11MeshGateAnnouncementProtocol;
1288         }
1289         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1290                 conf->dot11MeshHWMPRannInterval =
1291                         nconf->dot11MeshHWMPRannInterval;
1292         }
1293         return 0;
1294 }
1295
1296 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1297                                const struct mesh_config *conf,
1298                                const struct mesh_setup *setup)
1299 {
1300         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1301         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1302         int err;
1303
1304         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1305         err = copy_mesh_setup(ifmsh, setup);
1306         if (err)
1307                 return err;
1308         ieee80211_start_mesh(sdata);
1309
1310         return 0;
1311 }
1312
1313 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1314 {
1315         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1316
1317         ieee80211_stop_mesh(sdata);
1318
1319         return 0;
1320 }
1321 #endif
1322
1323 static int ieee80211_change_bss(struct wiphy *wiphy,
1324                                 struct net_device *dev,
1325                                 struct bss_parameters *params)
1326 {
1327         struct ieee80211_sub_if_data *sdata;
1328         u32 changed = 0;
1329
1330         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1331
1332         if (params->use_cts_prot >= 0) {
1333                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1334                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1335         }
1336         if (params->use_short_preamble >= 0) {
1337                 sdata->vif.bss_conf.use_short_preamble =
1338                         params->use_short_preamble;
1339                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1340         }
1341
1342         if (!sdata->vif.bss_conf.use_short_slot &&
1343             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1344                 sdata->vif.bss_conf.use_short_slot = true;
1345                 changed |= BSS_CHANGED_ERP_SLOT;
1346         }
1347
1348         if (params->use_short_slot_time >= 0) {
1349                 sdata->vif.bss_conf.use_short_slot =
1350                         params->use_short_slot_time;
1351                 changed |= BSS_CHANGED_ERP_SLOT;
1352         }
1353
1354         if (params->basic_rates) {
1355                 int i, j;
1356                 u32 rates = 0;
1357                 struct ieee80211_local *local = wiphy_priv(wiphy);
1358                 struct ieee80211_supported_band *sband =
1359                         wiphy->bands[local->oper_channel->band];
1360
1361                 for (i = 0; i < params->basic_rates_len; i++) {
1362                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1363                         for (j = 0; j < sband->n_bitrates; j++) {
1364                                 if (sband->bitrates[j].bitrate == rate)
1365                                         rates |= BIT(j);
1366                         }
1367                 }
1368                 sdata->vif.bss_conf.basic_rates = rates;
1369                 changed |= BSS_CHANGED_BASIC_RATES;
1370         }
1371
1372         if (params->ap_isolate >= 0) {
1373                 if (params->ap_isolate)
1374                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1375                 else
1376                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1377         }
1378
1379         if (params->ht_opmode >= 0) {
1380                 sdata->vif.bss_conf.ht_operation_mode =
1381                         (u16) params->ht_opmode;
1382                 changed |= BSS_CHANGED_HT;
1383         }
1384
1385         ieee80211_bss_info_change_notify(sdata, changed);
1386
1387         return 0;
1388 }
1389
1390 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1391                                     struct net_device *dev,
1392                                     struct ieee80211_txq_params *params)
1393 {
1394         struct ieee80211_local *local = wiphy_priv(wiphy);
1395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1396         struct ieee80211_tx_queue_params p;
1397
1398         if (!local->ops->conf_tx)
1399                 return -EOPNOTSUPP;
1400
1401         memset(&p, 0, sizeof(p));
1402         p.aifs = params->aifs;
1403         p.cw_max = params->cwmax;
1404         p.cw_min = params->cwmin;
1405         p.txop = params->txop;
1406
1407         /*
1408          * Setting tx queue params disables u-apsd because it's only
1409          * called in master mode.
1410          */
1411         p.uapsd = false;
1412
1413         if (params->queue >= local->hw.queues)
1414                 return -EINVAL;
1415
1416         sdata->tx_conf[params->queue] = p;
1417         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1418                 wiphy_debug(local->hw.wiphy,
1419                             "failed to set TX queue parameters for queue %d\n",
1420                             params->queue);
1421                 return -EINVAL;
1422         }
1423
1424         return 0;
1425 }
1426
1427 static int ieee80211_set_channel(struct wiphy *wiphy,
1428                                  struct net_device *netdev,
1429                                  struct ieee80211_channel *chan,
1430                                  enum nl80211_channel_type channel_type)
1431 {
1432         struct ieee80211_local *local = wiphy_priv(wiphy);
1433         struct ieee80211_sub_if_data *sdata = NULL;
1434         struct ieee80211_channel *old_oper;
1435         enum nl80211_channel_type old_oper_type;
1436         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1437
1438         if (netdev)
1439                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1440
1441         switch (ieee80211_get_channel_mode(local, NULL)) {
1442         case CHAN_MODE_HOPPING:
1443                 return -EBUSY;
1444         case CHAN_MODE_FIXED:
1445                 if (local->oper_channel != chan)
1446                         return -EBUSY;
1447                 if (!sdata && local->_oper_channel_type == channel_type)
1448                         return 0;
1449                 break;
1450         case CHAN_MODE_UNDEFINED:
1451                 break;
1452         }
1453
1454         if (sdata)
1455                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1456         old_oper_type = local->_oper_channel_type;
1457
1458         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1459                 return -EBUSY;
1460
1461         old_oper = local->oper_channel;
1462         local->oper_channel = chan;
1463
1464         /* Update driver if changes were actually made. */
1465         if ((old_oper != local->oper_channel) ||
1466             (old_oper_type != local->_oper_channel_type))
1467                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1468
1469         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1470             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1471                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1472
1473         return 0;
1474 }
1475
1476 #ifdef CONFIG_PM
1477 static int ieee80211_suspend(struct wiphy *wiphy,
1478                              struct cfg80211_wowlan *wowlan)
1479 {
1480         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1481 }
1482
1483 static int ieee80211_resume(struct wiphy *wiphy)
1484 {
1485         return __ieee80211_resume(wiphy_priv(wiphy));
1486 }
1487 #else
1488 #define ieee80211_suspend NULL
1489 #define ieee80211_resume NULL
1490 #endif
1491
1492 static int ieee80211_scan(struct wiphy *wiphy,
1493                           struct net_device *dev,
1494                           struct cfg80211_scan_request *req)
1495 {
1496         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1497
1498         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1499         case NL80211_IFTYPE_STATION:
1500         case NL80211_IFTYPE_ADHOC:
1501         case NL80211_IFTYPE_MESH_POINT:
1502         case NL80211_IFTYPE_P2P_CLIENT:
1503                 break;
1504         case NL80211_IFTYPE_P2P_GO:
1505                 if (sdata->local->ops->hw_scan)
1506                         break;
1507                 /*
1508                  * FIXME: implement NoA while scanning in software,
1509                  * for now fall through to allow scanning only when
1510                  * beaconing hasn't been configured yet
1511                  */
1512         case NL80211_IFTYPE_AP:
1513                 if (sdata->u.ap.beacon)
1514                         return -EOPNOTSUPP;
1515                 break;
1516         default:
1517                 return -EOPNOTSUPP;
1518         }
1519
1520         return ieee80211_request_scan(sdata, req);
1521 }
1522
1523 static int
1524 ieee80211_sched_scan_start(struct wiphy *wiphy,
1525                            struct net_device *dev,
1526                            struct cfg80211_sched_scan_request *req)
1527 {
1528         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1529
1530         if (!sdata->local->ops->sched_scan_start)
1531                 return -EOPNOTSUPP;
1532
1533         return ieee80211_request_sched_scan_start(sdata, req);
1534 }
1535
1536 static int
1537 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1538 {
1539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         if (!sdata->local->ops->sched_scan_stop)
1542                 return -EOPNOTSUPP;
1543
1544         return ieee80211_request_sched_scan_stop(sdata);
1545 }
1546
1547 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1548                           struct cfg80211_auth_request *req)
1549 {
1550         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1551 }
1552
1553 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1554                            struct cfg80211_assoc_request *req)
1555 {
1556         struct ieee80211_local *local = wiphy_priv(wiphy);
1557         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1558
1559         switch (ieee80211_get_channel_mode(local, sdata)) {
1560         case CHAN_MODE_HOPPING:
1561                 return -EBUSY;
1562         case CHAN_MODE_FIXED:
1563                 if (local->oper_channel == req->bss->channel)
1564                         break;
1565                 return -EBUSY;
1566         case CHAN_MODE_UNDEFINED:
1567                 break;
1568         }
1569
1570         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1571 }
1572
1573 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1574                             struct cfg80211_deauth_request *req,
1575                             void *cookie)
1576 {
1577         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1578                                     req, cookie);
1579 }
1580
1581 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1582                               struct cfg80211_disassoc_request *req,
1583                               void *cookie)
1584 {
1585         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1586                                       req, cookie);
1587 }
1588
1589 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1590                                struct cfg80211_ibss_params *params)
1591 {
1592         struct ieee80211_local *local = wiphy_priv(wiphy);
1593         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1594
1595         switch (ieee80211_get_channel_mode(local, sdata)) {
1596         case CHAN_MODE_HOPPING:
1597                 return -EBUSY;
1598         case CHAN_MODE_FIXED:
1599                 if (!params->channel_fixed)
1600                         return -EBUSY;
1601                 if (local->oper_channel == params->channel)
1602                         break;
1603                 return -EBUSY;
1604         case CHAN_MODE_UNDEFINED:
1605                 break;
1606         }
1607
1608         return ieee80211_ibss_join(sdata, params);
1609 }
1610
1611 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1612 {
1613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1614
1615         return ieee80211_ibss_leave(sdata);
1616 }
1617
1618 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1619 {
1620         struct ieee80211_local *local = wiphy_priv(wiphy);
1621         int err;
1622
1623         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1624                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1625
1626                 if (err)
1627                         return err;
1628         }
1629
1630         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1631                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1632
1633                 if (err)
1634                         return err;
1635         }
1636
1637         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1638                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1639
1640                 if (err)
1641                         return err;
1642         }
1643
1644         if (changed & WIPHY_PARAM_RETRY_SHORT)
1645                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1646         if (changed & WIPHY_PARAM_RETRY_LONG)
1647                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1648         if (changed &
1649             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1650                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1651
1652         return 0;
1653 }
1654
1655 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1656                                   enum nl80211_tx_power_setting type, int mbm)
1657 {
1658         struct ieee80211_local *local = wiphy_priv(wiphy);
1659         struct ieee80211_channel *chan = local->hw.conf.channel;
1660         u32 changes = 0;
1661
1662         switch (type) {
1663         case NL80211_TX_POWER_AUTOMATIC:
1664                 local->user_power_level = -1;
1665                 break;
1666         case NL80211_TX_POWER_LIMITED:
1667                 if (mbm < 0 || (mbm % 100))
1668                         return -EOPNOTSUPP;
1669                 local->user_power_level = MBM_TO_DBM(mbm);
1670                 break;
1671         case NL80211_TX_POWER_FIXED:
1672                 if (mbm < 0 || (mbm % 100))
1673                         return -EOPNOTSUPP;
1674                 /* TODO: move to cfg80211 when it knows the channel */
1675                 if (MBM_TO_DBM(mbm) > chan->max_power)
1676                         return -EINVAL;
1677                 local->user_power_level = MBM_TO_DBM(mbm);
1678                 break;
1679         }
1680
1681         ieee80211_hw_config(local, changes);
1682
1683         return 0;
1684 }
1685
1686 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1687 {
1688         struct ieee80211_local *local = wiphy_priv(wiphy);
1689
1690         *dbm = local->hw.conf.power_level;
1691
1692         return 0;
1693 }
1694
1695 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1696                                   const u8 *addr)
1697 {
1698         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1699
1700         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1701
1702         return 0;
1703 }
1704
1705 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1706 {
1707         struct ieee80211_local *local = wiphy_priv(wiphy);
1708
1709         drv_rfkill_poll(local);
1710 }
1711
1712 #ifdef CONFIG_NL80211_TESTMODE
1713 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1714 {
1715         struct ieee80211_local *local = wiphy_priv(wiphy);
1716
1717         if (!local->ops->testmode_cmd)
1718                 return -EOPNOTSUPP;
1719
1720         return local->ops->testmode_cmd(&local->hw, data, len);
1721 }
1722
1723 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1724                                    struct sk_buff *skb,
1725                                    struct netlink_callback *cb,
1726                                    void *data, int len)
1727 {
1728         struct ieee80211_local *local = wiphy_priv(wiphy);
1729
1730         if (!local->ops->testmode_dump)
1731                 return -EOPNOTSUPP;
1732
1733         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1734 }
1735 #endif
1736
1737 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1738                              enum ieee80211_smps_mode smps_mode)
1739 {
1740         const u8 *ap;
1741         enum ieee80211_smps_mode old_req;
1742         int err;
1743
1744         lockdep_assert_held(&sdata->u.mgd.mtx);
1745
1746         old_req = sdata->u.mgd.req_smps;
1747         sdata->u.mgd.req_smps = smps_mode;
1748
1749         if (old_req == smps_mode &&
1750             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1751                 return 0;
1752
1753         /*
1754          * If not associated, or current association is not an HT
1755          * association, there's no need to send an action frame.
1756          */
1757         if (!sdata->u.mgd.associated ||
1758             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1759                 mutex_lock(&sdata->local->iflist_mtx);
1760                 ieee80211_recalc_smps(sdata->local);
1761                 mutex_unlock(&sdata->local->iflist_mtx);
1762                 return 0;
1763         }
1764
1765         ap = sdata->u.mgd.associated->bssid;
1766
1767         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1768                 if (sdata->u.mgd.powersave)
1769                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1770                 else
1771                         smps_mode = IEEE80211_SMPS_OFF;
1772         }
1773
1774         /* send SM PS frame to AP */
1775         err = ieee80211_send_smps_action(sdata, smps_mode,
1776                                          ap, ap);
1777         if (err)
1778                 sdata->u.mgd.req_smps = old_req;
1779
1780         return err;
1781 }
1782
1783 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1784                                     bool enabled, int timeout)
1785 {
1786         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1787         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1788
1789         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1790                 return -EOPNOTSUPP;
1791
1792         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1793                 return -EOPNOTSUPP;
1794
1795         if (enabled == sdata->u.mgd.powersave &&
1796             timeout == local->dynamic_ps_forced_timeout)
1797                 return 0;
1798
1799         sdata->u.mgd.powersave = enabled;
1800         local->dynamic_ps_forced_timeout = timeout;
1801
1802         /* no change, but if automatic follow powersave */
1803         mutex_lock(&sdata->u.mgd.mtx);
1804         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1805         mutex_unlock(&sdata->u.mgd.mtx);
1806
1807         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1808                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1809
1810         ieee80211_recalc_ps(local, -1);
1811
1812         return 0;
1813 }
1814
1815 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1816                                          struct net_device *dev,
1817                                          s32 rssi_thold, u32 rssi_hyst)
1818 {
1819         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1820         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1821         struct ieee80211_vif *vif = &sdata->vif;
1822         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1823
1824         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1825             rssi_hyst == bss_conf->cqm_rssi_hyst)
1826                 return 0;
1827
1828         bss_conf->cqm_rssi_thold = rssi_thold;
1829         bss_conf->cqm_rssi_hyst = rssi_hyst;
1830
1831         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1832                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1833                         return -EOPNOTSUPP;
1834                 return 0;
1835         }
1836
1837         /* tell the driver upon association, unless already associated */
1838         if (sdata->u.mgd.associated)
1839                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1840
1841         return 0;
1842 }
1843
1844 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1845                                       struct net_device *dev,
1846                                       const u8 *addr,
1847                                       const struct cfg80211_bitrate_mask *mask)
1848 {
1849         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1850         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1851         int i, ret;
1852
1853         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1854                 ret = drv_set_bitrate_mask(local, sdata, mask);
1855                 if (ret)
1856                         return ret;
1857         }
1858
1859         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1860                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1861
1862         return 0;
1863 }
1864
1865 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1866                                           struct net_device *dev,
1867                                           struct ieee80211_channel *chan,
1868                                           enum nl80211_channel_type chantype,
1869                                           unsigned int duration, u64 *cookie)
1870 {
1871         int ret;
1872         u32 random_cookie;
1873
1874         lockdep_assert_held(&local->mtx);
1875
1876         if (local->hw_roc_cookie)
1877                 return -EBUSY;
1878         /* must be nonzero */
1879         random_cookie = random32() | 1;
1880
1881         *cookie = random_cookie;
1882         local->hw_roc_dev = dev;
1883         local->hw_roc_cookie = random_cookie;
1884         local->hw_roc_channel = chan;
1885         local->hw_roc_channel_type = chantype;
1886         local->hw_roc_duration = duration;
1887         ret = drv_remain_on_channel(local, chan, chantype, duration);
1888         if (ret) {
1889                 local->hw_roc_channel = NULL;
1890                 local->hw_roc_cookie = 0;
1891         }
1892
1893         return ret;
1894 }
1895
1896 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1897                                        struct net_device *dev,
1898                                        struct ieee80211_channel *chan,
1899                                        enum nl80211_channel_type channel_type,
1900                                        unsigned int duration,
1901                                        u64 *cookie)
1902 {
1903         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1904         struct ieee80211_local *local = sdata->local;
1905
1906         if (local->ops->remain_on_channel) {
1907                 int ret;
1908
1909                 mutex_lock(&local->mtx);
1910                 ret = ieee80211_remain_on_channel_hw(local, dev,
1911                                                      chan, channel_type,
1912                                                      duration, cookie);
1913                 local->hw_roc_for_tx = false;
1914                 mutex_unlock(&local->mtx);
1915
1916                 return ret;
1917         }
1918
1919         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1920                                               duration, cookie);
1921 }
1922
1923 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1924                                                  u64 cookie)
1925 {
1926         int ret;
1927
1928         lockdep_assert_held(&local->mtx);
1929
1930         if (local->hw_roc_cookie != cookie)
1931                 return -ENOENT;
1932
1933         ret = drv_cancel_remain_on_channel(local);
1934         if (ret)
1935                 return ret;
1936
1937         local->hw_roc_cookie = 0;
1938         local->hw_roc_channel = NULL;
1939
1940         ieee80211_recalc_idle(local);
1941
1942         return 0;
1943 }
1944
1945 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1946                                               struct net_device *dev,
1947                                               u64 cookie)
1948 {
1949         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1950         struct ieee80211_local *local = sdata->local;
1951
1952         if (local->ops->cancel_remain_on_channel) {
1953                 int ret;
1954
1955                 mutex_lock(&local->mtx);
1956                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1957                 mutex_unlock(&local->mtx);
1958
1959                 return ret;
1960         }
1961
1962         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1963 }
1964
1965 static enum work_done_result
1966 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1967 {
1968         /*
1969          * Use the data embedded in the work struct for reporting
1970          * here so if the driver mangled the SKB before dropping
1971          * it (which is the only way we really should get here)
1972          * then we don't report mangled data.
1973          *
1974          * If there was no wait time, then by the time we get here
1975          * the driver will likely not have reported the status yet,
1976          * so in that case userspace will have to deal with it.
1977          */
1978
1979         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
1980                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1981                                         (unsigned long) wk->offchan_tx.frame,
1982                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1983
1984         return WORK_DONE_DESTROY;
1985 }
1986
1987 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1988                              struct ieee80211_channel *chan, bool offchan,
1989                              enum nl80211_channel_type channel_type,
1990                              bool channel_type_valid, unsigned int wait,
1991                              const u8 *buf, size_t len, bool no_cck,
1992                              bool dont_wait_for_ack, u64 *cookie)
1993 {
1994         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1995         struct ieee80211_local *local = sdata->local;
1996         struct sk_buff *skb;
1997         struct sta_info *sta;
1998         struct ieee80211_work *wk;
1999         const struct ieee80211_mgmt *mgmt = (void *)buf;
2000         u32 flags;
2001         bool is_offchan = false;
2002
2003         if (dont_wait_for_ack)
2004                 flags = IEEE80211_TX_CTL_NO_ACK;
2005         else
2006                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2007                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2008
2009         /* Check that we are on the requested channel for transmission */
2010         if (chan != local->tmp_channel &&
2011             chan != local->oper_channel)
2012                 is_offchan = true;
2013         if (channel_type_valid &&
2014             (channel_type != local->tmp_channel_type &&
2015              channel_type != local->_oper_channel_type))
2016                 is_offchan = true;
2017
2018         if (chan == local->hw_roc_channel) {
2019                 /* TODO: check channel type? */
2020                 is_offchan = false;
2021                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2022         }
2023
2024         if (no_cck)
2025                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2026
2027         if (is_offchan && !offchan)
2028                 return -EBUSY;
2029
2030         switch (sdata->vif.type) {
2031         case NL80211_IFTYPE_ADHOC:
2032         case NL80211_IFTYPE_AP:
2033         case NL80211_IFTYPE_AP_VLAN:
2034         case NL80211_IFTYPE_P2P_GO:
2035         case NL80211_IFTYPE_MESH_POINT:
2036                 if (!ieee80211_is_action(mgmt->frame_control) ||
2037                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2038                         break;
2039                 rcu_read_lock();
2040                 sta = sta_info_get(sdata, mgmt->da);
2041                 rcu_read_unlock();
2042                 if (!sta)
2043                         return -ENOLINK;
2044                 break;
2045         case NL80211_IFTYPE_STATION:
2046         case NL80211_IFTYPE_P2P_CLIENT:
2047                 break;
2048         default:
2049                 return -EOPNOTSUPP;
2050         }
2051
2052         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2053         if (!skb)
2054                 return -ENOMEM;
2055         skb_reserve(skb, local->hw.extra_tx_headroom);
2056
2057         memcpy(skb_put(skb, len), buf, len);
2058
2059         IEEE80211_SKB_CB(skb)->flags = flags;
2060
2061         skb->dev = sdata->dev;
2062
2063         *cookie = (unsigned long) skb;
2064
2065         if (is_offchan && local->ops->remain_on_channel) {
2066                 unsigned int duration;
2067                 int ret;
2068
2069                 mutex_lock(&local->mtx);
2070                 /*
2071                  * If the duration is zero, then the driver
2072                  * wouldn't actually do anything. Set it to
2073                  * 100 for now.
2074                  *
2075                  * TODO: cancel the off-channel operation
2076                  *       when we get the SKB's TX status and
2077                  *       the wait time was zero before.
2078                  */
2079                 duration = 100;
2080                 if (wait)
2081                         duration = wait;
2082                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2083                                                      channel_type,
2084                                                      duration, cookie);
2085                 if (ret) {
2086                         kfree_skb(skb);
2087                         mutex_unlock(&local->mtx);
2088                         return ret;
2089                 }
2090
2091                 local->hw_roc_for_tx = true;
2092                 local->hw_roc_duration = wait;
2093
2094                 /*
2095                  * queue up frame for transmission after
2096                  * ieee80211_ready_on_channel call
2097                  */
2098
2099                 /* modify cookie to prevent API mismatches */
2100                 *cookie ^= 2;
2101                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2102                 local->hw_roc_skb = skb;
2103                 local->hw_roc_skb_for_status = skb;
2104                 mutex_unlock(&local->mtx);
2105
2106                 return 0;
2107         }
2108
2109         /*
2110          * Can transmit right away if the channel was the
2111          * right one and there's no wait involved... If a
2112          * wait is involved, we might otherwise not be on
2113          * the right channel for long enough!
2114          */
2115         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2116                 ieee80211_tx_skb(sdata, skb);
2117                 return 0;
2118         }
2119
2120         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2121         if (!wk) {
2122                 kfree_skb(skb);
2123                 return -ENOMEM;
2124         }
2125
2126         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2127         wk->chan = chan;
2128         wk->chan_type = channel_type;
2129         wk->sdata = sdata;
2130         wk->done = ieee80211_offchan_tx_done;
2131         wk->offchan_tx.frame = skb;
2132         wk->offchan_tx.wait = wait;
2133         wk->ie_len = len;
2134         memcpy(wk->ie, buf, len);
2135
2136         ieee80211_add_work(wk);
2137         return 0;
2138 }
2139
2140 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2141                                          struct net_device *dev,
2142                                          u64 cookie)
2143 {
2144         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2145         struct ieee80211_local *local = sdata->local;
2146         struct ieee80211_work *wk;
2147         int ret = -ENOENT;
2148
2149         mutex_lock(&local->mtx);
2150
2151         if (local->ops->cancel_remain_on_channel) {
2152                 cookie ^= 2;
2153                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2154
2155                 if (ret == 0) {
2156                         kfree_skb(local->hw_roc_skb);
2157                         local->hw_roc_skb = NULL;
2158                         local->hw_roc_skb_for_status = NULL;
2159                 }
2160
2161                 mutex_unlock(&local->mtx);
2162
2163                 return ret;
2164         }
2165
2166         list_for_each_entry(wk, &local->work_list, list) {
2167                 if (wk->sdata != sdata)
2168                         continue;
2169
2170                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2171                         continue;
2172
2173                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2174                         continue;
2175
2176                 wk->timeout = jiffies;
2177
2178                 ieee80211_queue_work(&local->hw, &local->work_work);
2179                 ret = 0;
2180                 break;
2181         }
2182         mutex_unlock(&local->mtx);
2183
2184         return ret;
2185 }
2186
2187 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2188                                           struct net_device *dev,
2189                                           u16 frame_type, bool reg)
2190 {
2191         struct ieee80211_local *local = wiphy_priv(wiphy);
2192
2193         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2194                 return;
2195
2196         if (reg)
2197                 local->probe_req_reg++;
2198         else
2199                 local->probe_req_reg--;
2200
2201         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2202 }
2203
2204 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2205 {
2206         struct ieee80211_local *local = wiphy_priv(wiphy);
2207
2208         if (local->started)
2209                 return -EOPNOTSUPP;
2210
2211         return drv_set_antenna(local, tx_ant, rx_ant);
2212 }
2213
2214 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2215 {
2216         struct ieee80211_local *local = wiphy_priv(wiphy);
2217
2218         return drv_get_antenna(local, tx_ant, rx_ant);
2219 }
2220
2221 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224
2225         return drv_set_ringparam(local, tx, rx);
2226 }
2227
2228 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2229                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2230 {
2231         struct ieee80211_local *local = wiphy_priv(wiphy);
2232
2233         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2234 }
2235
2236 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2237                                     struct net_device *dev,
2238                                     struct cfg80211_gtk_rekey_data *data)
2239 {
2240         struct ieee80211_local *local = wiphy_priv(wiphy);
2241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2242
2243         if (!local->ops->set_rekey_data)
2244                 return -EOPNOTSUPP;
2245
2246         drv_set_rekey_data(local, sdata, data);
2247
2248         return 0;
2249 }
2250
2251 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2252 {
2253         u8 *pos = (void *)skb_put(skb, 7);
2254
2255         *pos++ = WLAN_EID_EXT_CAPABILITY;
2256         *pos++ = 5; /* len */
2257         *pos++ = 0x0;
2258         *pos++ = 0x0;
2259         *pos++ = 0x0;
2260         *pos++ = 0x0;
2261         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2262 }
2263
2264 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2265 {
2266         struct ieee80211_local *local = sdata->local;
2267         u16 capab;
2268
2269         capab = 0;
2270         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2271                 return capab;
2272
2273         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2274                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2275         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2276                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2277
2278         return capab;
2279 }
2280
2281 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2282                                        u8 *peer, u8 *bssid)
2283 {
2284         struct ieee80211_tdls_lnkie *lnkid;
2285
2286         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2287
2288         lnkid->ie_type = WLAN_EID_LINK_ID;
2289         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2290
2291         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2292         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2293         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2294 }
2295
2296 static int
2297 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2298                                u8 *peer, u8 action_code, u8 dialog_token,
2299                                u16 status_code, struct sk_buff *skb)
2300 {
2301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2302         struct ieee80211_tdls_data *tf;
2303
2304         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2305
2306         memcpy(tf->da, peer, ETH_ALEN);
2307         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2308         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2309         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2310
2311         switch (action_code) {
2312         case WLAN_TDLS_SETUP_REQUEST:
2313                 tf->category = WLAN_CATEGORY_TDLS;
2314                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2315
2316                 skb_put(skb, sizeof(tf->u.setup_req));
2317                 tf->u.setup_req.dialog_token = dialog_token;
2318                 tf->u.setup_req.capability =
2319                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2320
2321                 ieee80211_add_srates_ie(&sdata->vif, skb);
2322                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2323                 ieee80211_tdls_add_ext_capab(skb);
2324                 break;
2325         case WLAN_TDLS_SETUP_RESPONSE:
2326                 tf->category = WLAN_CATEGORY_TDLS;
2327                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2328
2329                 skb_put(skb, sizeof(tf->u.setup_resp));
2330                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2331                 tf->u.setup_resp.dialog_token = dialog_token;
2332                 tf->u.setup_resp.capability =
2333                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2334
2335                 ieee80211_add_srates_ie(&sdata->vif, skb);
2336                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2337                 ieee80211_tdls_add_ext_capab(skb);
2338                 break;
2339         case WLAN_TDLS_SETUP_CONFIRM:
2340                 tf->category = WLAN_CATEGORY_TDLS;
2341                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2342
2343                 skb_put(skb, sizeof(tf->u.setup_cfm));
2344                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2345                 tf->u.setup_cfm.dialog_token = dialog_token;
2346                 break;
2347         case WLAN_TDLS_TEARDOWN:
2348                 tf->category = WLAN_CATEGORY_TDLS;
2349                 tf->action_code = WLAN_TDLS_TEARDOWN;
2350
2351                 skb_put(skb, sizeof(tf->u.teardown));
2352                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2353                 break;
2354         case WLAN_TDLS_DISCOVERY_REQUEST:
2355                 tf->category = WLAN_CATEGORY_TDLS;
2356                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2357
2358                 skb_put(skb, sizeof(tf->u.discover_req));
2359                 tf->u.discover_req.dialog_token = dialog_token;
2360                 break;
2361         default:
2362                 return -EINVAL;
2363         }
2364
2365         return 0;
2366 }
2367
2368 static int
2369 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2370                            u8 *peer, u8 action_code, u8 dialog_token,
2371                            u16 status_code, struct sk_buff *skb)
2372 {
2373         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2374         struct ieee80211_mgmt *mgmt;
2375
2376         mgmt = (void *)skb_put(skb, 24);
2377         memset(mgmt, 0, 24);
2378         memcpy(mgmt->da, peer, ETH_ALEN);
2379         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2380         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2381
2382         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2383                                           IEEE80211_STYPE_ACTION);
2384
2385         switch (action_code) {
2386         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2387                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2388                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2389                 mgmt->u.action.u.tdls_discover_resp.action_code =
2390                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2391                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2392                         dialog_token;
2393                 mgmt->u.action.u.tdls_discover_resp.capability =
2394                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2395
2396                 ieee80211_add_srates_ie(&sdata->vif, skb);
2397                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2398                 ieee80211_tdls_add_ext_capab(skb);
2399                 break;
2400         default:
2401                 return -EINVAL;
2402         }
2403
2404         return 0;
2405 }
2406
2407 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2408                                u8 *peer, u8 action_code, u8 dialog_token,
2409                                u16 status_code, const u8 *extra_ies,
2410                                size_t extra_ies_len)
2411 {
2412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2413         struct ieee80211_local *local = sdata->local;
2414         struct ieee80211_tx_info *info;
2415         struct sk_buff *skb = NULL;
2416         bool send_direct;
2417         int ret;
2418
2419         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2420                 return -ENOTSUPP;
2421
2422         /* make sure we are in managed mode, and associated */
2423         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2424             !sdata->u.mgd.associated)
2425                 return -EINVAL;
2426
2427 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2428         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2429 #endif
2430
2431         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2432                             max(sizeof(struct ieee80211_mgmt),
2433                                 sizeof(struct ieee80211_tdls_data)) +
2434                             50 + /* supported rates */
2435                             7 + /* ext capab */
2436                             extra_ies_len +
2437                             sizeof(struct ieee80211_tdls_lnkie));
2438         if (!skb)
2439                 return -ENOMEM;
2440
2441         info = IEEE80211_SKB_CB(skb);
2442         skb_reserve(skb, local->hw.extra_tx_headroom);
2443
2444         switch (action_code) {
2445         case WLAN_TDLS_SETUP_REQUEST:
2446         case WLAN_TDLS_SETUP_RESPONSE:
2447         case WLAN_TDLS_SETUP_CONFIRM:
2448         case WLAN_TDLS_TEARDOWN:
2449         case WLAN_TDLS_DISCOVERY_REQUEST:
2450                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2451                                                      action_code, dialog_token,
2452                                                      status_code, skb);
2453                 send_direct = false;
2454                 break;
2455         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2456                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2457                                                  dialog_token, status_code,
2458                                                  skb);
2459                 send_direct = true;
2460                 break;
2461         default:
2462                 ret = -ENOTSUPP;
2463                 break;
2464         }
2465
2466         if (ret < 0)
2467                 goto fail;
2468
2469         if (extra_ies_len)
2470                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2471
2472         /* the TDLS link IE is always added last */
2473         switch (action_code) {
2474         case WLAN_TDLS_SETUP_REQUEST:
2475         case WLAN_TDLS_SETUP_CONFIRM:
2476         case WLAN_TDLS_TEARDOWN:
2477         case WLAN_TDLS_DISCOVERY_REQUEST:
2478                 /* we are the initiator */
2479                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2480                                            sdata->u.mgd.bssid);
2481                 break;
2482         case WLAN_TDLS_SETUP_RESPONSE:
2483         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2484                 /* we are the responder */
2485                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2486                                            sdata->u.mgd.bssid);
2487                 break;
2488         default:
2489                 ret = -ENOTSUPP;
2490                 goto fail;
2491         }
2492
2493         if (send_direct) {
2494                 ieee80211_tx_skb(sdata, skb);
2495                 return 0;
2496         }
2497
2498         /*
2499          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2500          * we should default to AC_VI.
2501          */
2502         switch (action_code) {
2503         case WLAN_TDLS_SETUP_REQUEST:
2504         case WLAN_TDLS_SETUP_RESPONSE:
2505                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2506                 skb->priority = 2;
2507                 break;
2508         default:
2509                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2510                 skb->priority = 5;
2511                 break;
2512         }
2513
2514         /* disable bottom halves when entering the Tx path */
2515         local_bh_disable();
2516         ret = ieee80211_subif_start_xmit(skb, dev);
2517         local_bh_enable();
2518
2519         return ret;
2520
2521 fail:
2522         dev_kfree_skb(skb);
2523         return ret;
2524 }
2525
2526 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2527                                u8 *peer, enum nl80211_tdls_operation oper)
2528 {
2529         struct sta_info *sta;
2530         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2531
2532         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2533                 return -ENOTSUPP;
2534
2535         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2536                 return -EINVAL;
2537
2538 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2539         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2540 #endif
2541
2542         switch (oper) {
2543         case NL80211_TDLS_ENABLE_LINK:
2544                 rcu_read_lock();
2545                 sta = sta_info_get(sdata, peer);
2546                 if (!sta) {
2547                         rcu_read_unlock();
2548                         return -ENOLINK;
2549                 }
2550
2551                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2552                 rcu_read_unlock();
2553                 break;
2554         case NL80211_TDLS_DISABLE_LINK:
2555                 return sta_info_destroy_addr(sdata, peer);
2556         case NL80211_TDLS_TEARDOWN:
2557         case NL80211_TDLS_SETUP:
2558         case NL80211_TDLS_DISCOVERY_REQ:
2559                 /* We don't support in-driver setup/teardown/discovery */
2560                 return -ENOTSUPP;
2561         default:
2562                 return -ENOTSUPP;
2563         }
2564
2565         return 0;
2566 }
2567
2568 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2569                                   const u8 *peer, u64 *cookie)
2570 {
2571         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2572         struct ieee80211_local *local = sdata->local;
2573         struct ieee80211_qos_hdr *nullfunc;
2574         struct sk_buff *skb;
2575         int size = sizeof(*nullfunc);
2576         __le16 fc;
2577         bool qos;
2578         struct ieee80211_tx_info *info;
2579         struct sta_info *sta;
2580
2581         rcu_read_lock();
2582         sta = sta_info_get(sdata, peer);
2583         if (sta) {
2584                 qos = test_sta_flag(sta, WLAN_STA_WME);
2585                 rcu_read_unlock();
2586         } else {
2587                 rcu_read_unlock();
2588                 return -ENOLINK;
2589         }
2590
2591         if (qos) {
2592                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2593                                  IEEE80211_STYPE_QOS_NULLFUNC |
2594                                  IEEE80211_FCTL_FROMDS);
2595         } else {
2596                 size -= 2;
2597                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2598                                  IEEE80211_STYPE_NULLFUNC |
2599                                  IEEE80211_FCTL_FROMDS);
2600         }
2601
2602         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2603         if (!skb)
2604                 return -ENOMEM;
2605
2606         skb->dev = dev;
2607
2608         skb_reserve(skb, local->hw.extra_tx_headroom);
2609
2610         nullfunc = (void *) skb_put(skb, size);
2611         nullfunc->frame_control = fc;
2612         nullfunc->duration_id = 0;
2613         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2614         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2615         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2616         nullfunc->seq_ctrl = 0;
2617
2618         info = IEEE80211_SKB_CB(skb);
2619
2620         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2621                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2622
2623         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2624         skb->priority = 7;
2625         if (qos)
2626                 nullfunc->qos_ctrl = cpu_to_le16(7);
2627
2628         local_bh_disable();
2629         ieee80211_xmit(sdata, skb);
2630         local_bh_enable();
2631
2632         *cookie = (unsigned long) skb;
2633         return 0;
2634 }
2635
2636 static struct ieee80211_channel *
2637 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2638 {
2639         struct ieee80211_local *local = wiphy_priv(wiphy);
2640
2641         return local->oper_channel;
2642 }
2643
2644 struct cfg80211_ops mac80211_config_ops = {
2645         .add_virtual_intf = ieee80211_add_iface,
2646         .del_virtual_intf = ieee80211_del_iface,
2647         .change_virtual_intf = ieee80211_change_iface,
2648         .add_key = ieee80211_add_key,
2649         .del_key = ieee80211_del_key,
2650         .get_key = ieee80211_get_key,
2651         .set_default_key = ieee80211_config_default_key,
2652         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2653         .add_beacon = ieee80211_add_beacon,
2654         .set_beacon = ieee80211_set_beacon,
2655         .del_beacon = ieee80211_del_beacon,
2656         .add_station = ieee80211_add_station,
2657         .del_station = ieee80211_del_station,
2658         .change_station = ieee80211_change_station,
2659         .get_station = ieee80211_get_station,
2660         .dump_station = ieee80211_dump_station,
2661         .dump_survey = ieee80211_dump_survey,
2662 #ifdef CONFIG_MAC80211_MESH
2663         .add_mpath = ieee80211_add_mpath,
2664         .del_mpath = ieee80211_del_mpath,
2665         .change_mpath = ieee80211_change_mpath,
2666         .get_mpath = ieee80211_get_mpath,
2667         .dump_mpath = ieee80211_dump_mpath,
2668         .update_mesh_config = ieee80211_update_mesh_config,
2669         .get_mesh_config = ieee80211_get_mesh_config,
2670         .join_mesh = ieee80211_join_mesh,
2671         .leave_mesh = ieee80211_leave_mesh,
2672 #endif
2673         .change_bss = ieee80211_change_bss,
2674         .set_txq_params = ieee80211_set_txq_params,
2675         .set_channel = ieee80211_set_channel,
2676         .suspend = ieee80211_suspend,
2677         .resume = ieee80211_resume,
2678         .scan = ieee80211_scan,
2679         .sched_scan_start = ieee80211_sched_scan_start,
2680         .sched_scan_stop = ieee80211_sched_scan_stop,
2681         .auth = ieee80211_auth,
2682         .assoc = ieee80211_assoc,
2683         .deauth = ieee80211_deauth,
2684         .disassoc = ieee80211_disassoc,
2685         .join_ibss = ieee80211_join_ibss,
2686         .leave_ibss = ieee80211_leave_ibss,
2687         .set_wiphy_params = ieee80211_set_wiphy_params,
2688         .set_tx_power = ieee80211_set_tx_power,
2689         .get_tx_power = ieee80211_get_tx_power,
2690         .set_wds_peer = ieee80211_set_wds_peer,
2691         .rfkill_poll = ieee80211_rfkill_poll,
2692         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2693         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2694         .set_power_mgmt = ieee80211_set_power_mgmt,
2695         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2696         .remain_on_channel = ieee80211_remain_on_channel,
2697         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2698         .mgmt_tx = ieee80211_mgmt_tx,
2699         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2700         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2701         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2702         .set_antenna = ieee80211_set_antenna,
2703         .get_antenna = ieee80211_get_antenna,
2704         .set_ringparam = ieee80211_set_ringparam,
2705         .get_ringparam = ieee80211_get_ringparam,
2706         .set_rekey_data = ieee80211_set_rekey_data,
2707         .tdls_oper = ieee80211_tdls_oper,
2708         .tdls_mgmt = ieee80211_tdls_mgmt,
2709         .probe_client = ieee80211_probe_client,
2710         .get_channel = ieee80211_wiphy_get_channel,
2711         .set_noack_map = ieee80211_set_noack_map,
2712 };