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 <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 if (ieee80211_vif_is_mesh(&sdata->vif))
 140                         sta = sta_info_get(sdata, mac_addr);
 141                 else
 142                         sta = sta_info_get_bss(sdata, mac_addr);
 143                 if (!sta) {
 144                         ieee80211_key_free(sdata->local, key);
 145                         err = -ENOENT;
 146                         goto out_unlock;
 147                 }
 148         }
 149
 150         err = ieee80211_key_link(key, sdata, sta);
 151         if (err)
 152                 ieee80211_key_free(sdata->local, key);
 153
 154  out_unlock:
 155         mutex_unlock(&sdata->local->sta_mtx);
 156
 157         return err;
 158 }
 159
 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 161                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 162 {
 163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 164         struct ieee80211_local *local = sdata->local;
 165         struct sta_info *sta;
 166         struct ieee80211_key *key = NULL;
 167         int ret;
 168
 169         mutex_lock(&local->sta_mtx);
 170         mutex_lock(&local->key_mtx);
 171
 172         if (mac_addr) {
 173                 ret = -ENOENT;
 174
 175                 sta = sta_info_get_bss(sdata, mac_addr);
 176                 if (!sta)
 177                         goto out_unlock;
 178
 179                 if (pairwise)
 180                         key = key_mtx_dereference(local, sta->ptk);
 181                 else
 182                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 183         } else
 184                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 185
 186         if (!key) {
 187                 ret = -ENOENT;
 188                 goto out_unlock;
 189         }
 190
 191         __ieee80211_key_free(key);
 192
 193         ret = 0;
 194  out_unlock:
 195         mutex_unlock(&local->key_mtx);
 196         mutex_unlock(&local->sta_mtx);
 197
 198         return ret;
 199 }
 200
 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 202                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 203                              void *cookie,
 204                              void (*callback)(void *cookie,
 205                                               struct key_params *params))
 206 {
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta = NULL;
 209         u8 seq[6] = {0};
 210         struct key_params params;
 211         struct ieee80211_key *key = NULL;
 212         u64 pn64;
 213         u32 iv32;
 214         u16 iv16;
 215         int err = -ENOENT;
 216
 217         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 218
 219         rcu_read_lock();
 220
 221         if (mac_addr) {
 222                 sta = sta_info_get_bss(sdata, mac_addr);
 223                 if (!sta)
 224                         goto out;
 225
 226                 if (pairwise)
 227                         key = rcu_dereference(sta->ptk);
 228                 else if (key_idx < NUM_DEFAULT_KEYS)
 229                         key = rcu_dereference(sta->gtk[key_idx]);
 230         } else
 231                 key = rcu_dereference(sdata->keys[key_idx]);
 232
 233         if (!key)
 234                 goto out;
 235
 236         memset(&params, 0, sizeof(params));
 237
 238         params.cipher = key->conf.cipher;
 239
 240         switch (key->conf.cipher) {
 241         case WLAN_CIPHER_SUITE_TKIP:
 242                 iv32 = key->u.tkip.tx.iv32;
 243                 iv16 = key->u.tkip.tx.iv16;
 244
 245                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 246                         drv_get_tkip_seq(sdata->local,
 247                                          key->conf.hw_key_idx,
 248                                          &iv32, &iv16);
 249
 250                 seq[0] = iv16 & 0xff;
 251                 seq[1] = (iv16 >> 8) & 0xff;
 252                 seq[2] = iv32 & 0xff;
 253                 seq[3] = (iv32 >> 8) & 0xff;
 254                 seq[4] = (iv32 >> 16) & 0xff;
 255                 seq[5] = (iv32 >> 24) & 0xff;
 256                 params.seq = seq;
 257                 params.seq_len = 6;
 258                 break;
 259         case WLAN_CIPHER_SUITE_CCMP:
 260                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 261                 seq[0] = pn64;
 262                 seq[1] = pn64 >> 8;
 263                 seq[2] = pn64 >> 16;
 264                 seq[3] = pn64 >> 24;
 265                 seq[4] = pn64 >> 32;
 266                 seq[5] = pn64 >> 40;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_AES_CMAC:
 271                 pn64 = atomic64_read(&key->u.aes_cmac.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         }
 282
 283         params.key = key->conf.key;
 284         params.key_len = key->conf.keylen;
 285
 286         callback(cookie, &params);
 287         err = 0;
 288
 289  out:
 290         rcu_read_unlock();
 291         return err;
 292 }
 293
 294 static int ieee80211_config_default_key(struct wiphy *wiphy,
 295                                         struct net_device *dev,
 296                                         u8 key_idx, bool uni,
 297                                         bool multi)
 298 {
 299         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 300
 301         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 302
 303         return 0;
 304 }
 305
 306 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 307                                              struct net_device *dev,
 308                                              u8 key_idx)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_mgmt_key(sdata, key_idx);
 313
 314         return 0;
 315 }
 316
 317 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 318 {
 319         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 320                 struct ieee80211_supported_band *sband;
 321                 sband = sta->local->hw.wiphy->bands[
 322                                 sta->local->hw.conf.channel->band];
 323                 rate->legacy = sband->bitrates[idx].bitrate;
 324         } else
 325                 rate->mcs = idx;
 326 }
 327
 328 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 329 {
 330         struct ieee80211_sub_if_data *sdata = sta->sdata;
 331         struct timespec uptime;
 332
 333         sinfo->generation = sdata->local->sta_generation;
 334
 335         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 336                         STATION_INFO_RX_BYTES |
 337                         STATION_INFO_TX_BYTES |
 338                         STATION_INFO_RX_PACKETS |
 339                         STATION_INFO_TX_PACKETS |
 340                         STATION_INFO_TX_RETRIES |
 341                         STATION_INFO_TX_FAILED |
 342                         STATION_INFO_TX_BITRATE |
 343                         STATION_INFO_RX_BITRATE |
 344                         STATION_INFO_RX_DROP_MISC |
 345                         STATION_INFO_BSS_PARAM |
 346                         STATION_INFO_CONNECTED_TIME;
 347
 348         do_posix_clock_monotonic_gettime(&uptime);
 349         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 350
 351         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 352         sinfo->rx_bytes = sta->rx_bytes;
 353         sinfo->tx_bytes = sta->tx_bytes;
 354         sinfo->rx_packets = sta->rx_packets;
 355         sinfo->tx_packets = sta->tx_packets;
 356         sinfo->tx_retries = sta->tx_retry_count;
 357         sinfo->tx_failed = sta->tx_retry_failed;
 358         sinfo->rx_dropped_misc = sta->rx_dropped;
 359
 360         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 361             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 362                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 363                 sinfo->signal = (s8)sta->last_signal;
 364                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 365         }
 366
 367         sinfo->txrate.flags = 0;
 368         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 369                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 374         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 375
 376         sinfo->rxrate.flags = 0;
 377         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 378                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 379         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 381         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 383         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 384
 385         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 386 #ifdef CONFIG_MAC80211_MESH
 387                 sinfo->filled |= STATION_INFO_LLID |
 388                                  STATION_INFO_PLID |
 389                                  STATION_INFO_PLINK_STATE;
 390
 391                 sinfo->llid = le16_to_cpu(sta->llid);
 392                 sinfo->plid = le16_to_cpu(sta->plid);
 393                 sinfo->plink_state = sta->plink_state;
 394 #endif
 395         }
 396
 397         sinfo->bss_param.flags = 0;
 398         if (sdata->vif.bss_conf.use_cts_prot)
 399                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 400         if (sdata->vif.bss_conf.use_short_preamble)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 402         if (sdata->vif.bss_conf.use_short_slot)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 404         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 405         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 406 }
 407
 408
 409 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 410                                  int idx, u8 *mac, struct station_info *sinfo)
 411 {
 412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 413         struct sta_info *sta;
 414         int ret = -ENOENT;
 415
 416         rcu_read_lock();
 417
 418         sta = sta_info_get_by_idx(sdata, idx);
 419         if (sta) {
 420                 ret = 0;
 421                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 422                 sta_set_sinfo(sta, sinfo);
 423         }
 424
 425         rcu_read_unlock();
 426
 427         return ret;
 428 }
 429
 430 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 431                                  int idx, struct survey_info *survey)
 432 {
 433         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 434
 435         return drv_get_survey(local, idx, survey);
 436 }
 437
 438 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 439                                  u8 *mac, struct station_info *sinfo)
 440 {
 441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 442         struct sta_info *sta;
 443         int ret = -ENOENT;
 444
 445         rcu_read_lock();
 446
 447         sta = sta_info_get_bss(sdata, mac);
 448         if (sta) {
 449                 ret = 0;
 450                 sta_set_sinfo(sta, sinfo);
 451         }
 452
 453         rcu_read_unlock();
 454
 455         return ret;
 456 }
 457
 458 /*
 459  * This handles both adding a beacon and setting new beacon info
 460  */
 461 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 462                                    struct beacon_parameters *params)
 463 {
 464         struct beacon_data *new, *old;
 465         int new_head_len, new_tail_len;
 466         int size;
 467         int err = -EINVAL;
 468
 469         old = rtnl_dereference(sdata->u.ap.beacon);
 470
 471         /* head must not be zero-length */
 472         if (params->head && !params->head_len)
 473                 return -EINVAL;
 474
 475         /*
 476          * This is a kludge. beacon interval should really be part
 477          * of the beacon information.
 478          */
 479         if (params->interval &&
 480             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 481                 sdata->vif.bss_conf.beacon_int = params->interval;
 482                 ieee80211_bss_info_change_notify(sdata,
 483                                                  BSS_CHANGED_BEACON_INT);
 484         }
 485
 486         /* Need to have a beacon head if we don't have one yet */
 487         if (!params->head && !old)
 488                 return err;
 489
 490         /* sorry, no way to start beaconing without dtim period */
 491         if (!params->dtim_period && !old)
 492                 return err;
 493
 494         /* new or old head? */
 495         if (params->head)
 496                 new_head_len = params->head_len;
 497         else
 498                 new_head_len = old->head_len;
 499
 500         /* new or old tail? */
 501         if (params->tail || !old)
 502                 /* params->tail_len will be zero for !params->tail */
 503                 new_tail_len = params->tail_len;
 504         else
 505                 new_tail_len = old->tail_len;
 506
 507         size = sizeof(*new) + new_head_len + new_tail_len;
 508
 509         new = kzalloc(size, GFP_KERNEL);
 510         if (!new)
 511                 return -ENOMEM;
 512
 513         /* start filling the new info now */
 514
 515         /* new or old dtim period? */
 516         if (params->dtim_period)
 517                 new->dtim_period = params->dtim_period;
 518         else
 519                 new->dtim_period = old->dtim_period;
 520
 521         /*
 522          * pointers go into the block we allocated,
 523          * memory is | beacon_data | head | tail |
 524          */
 525         new->head = ((u8 *) new) + sizeof(*new);
 526         new->tail = new->head + new_head_len;
 527         new->head_len = new_head_len;
 528         new->tail_len = new_tail_len;
 529
 530         /* copy in head */
 531         if (params->head)
 532                 memcpy(new->head, params->head, new_head_len);
 533         else
 534                 memcpy(new->head, old->head, new_head_len);
 535
 536         /* copy in optional tail */
 537         if (params->tail)
 538                 memcpy(new->tail, params->tail, new_tail_len);
 539         else
 540                 if (old)
 541                         memcpy(new->tail, old->tail, new_tail_len);
 542
 543         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 544
 545         rcu_assign_pointer(sdata->u.ap.beacon, new);
 546
 547         synchronize_rcu();
 548
 549         kfree(old);
 550
 551         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 552                                                 BSS_CHANGED_BEACON);
 553         return 0;
 554 }
 555
 556 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 557                                 struct beacon_parameters *params)
 558 {
 559         struct ieee80211_sub_if_data *sdata;
 560         struct beacon_data *old;
 561
 562         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 563
 564         old = rtnl_dereference(sdata->u.ap.beacon);
 565         if (old)
 566                 return -EALREADY;
 567
 568         return ieee80211_config_beacon(sdata, params);
 569 }
 570
 571 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 572                                 struct beacon_parameters *params)
 573 {
 574         struct ieee80211_sub_if_data *sdata;
 575         struct beacon_data *old;
 576
 577         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 578
 579         old = rtnl_dereference(sdata->u.ap.beacon);
 580         if (!old)
 581                 return -ENOENT;
 582
 583         return ieee80211_config_beacon(sdata, params);
 584 }
 585
 586 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 587 {
 588         struct ieee80211_sub_if_data *sdata;
 589         struct beacon_data *old;
 590
 591         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 592
 593         old = rtnl_dereference(sdata->u.ap.beacon);
 594         if (!old)
 595                 return -ENOENT;
 596
 597         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 598         synchronize_rcu();
 599         kfree(old);
 600
 601         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 602         return 0;
 603 }
 604
 605 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 606 struct iapp_layer2_update {
 607         u8 da[ETH_ALEN];        /* broadcast */
 608         u8 sa[ETH_ALEN];        /* STA addr */
 609         __be16 len;             /* 6 */
 610         u8 dsap;                /* 0 */
 611         u8 ssap;                /* 0 */
 612         u8 control;
 613         u8 xid_info[3];
 614 } __packed;
 615
 616 static void ieee80211_send_layer2_update(struct sta_info *sta)
 617 {
 618         struct iapp_layer2_update *msg;
 619         struct sk_buff *skb;
 620
 621         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 622          * bridge devices */
 623
 624         skb = dev_alloc_skb(sizeof(*msg));
 625         if (!skb)
 626                 return;
 627         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 628
 629         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 630          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 631
 632         memset(msg->da, 0xff, ETH_ALEN);
 633         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 634         msg->len = htons(6);
 635         msg->dsap = 0;
 636         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 637         msg->control = 0xaf;    /* XID response lsb.1111F101.
 638                                  * F=0 (no poll command; unsolicited frame) */
 639         msg->xid_info[0] = 0x81;        /* XID format identifier */
 640         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 641         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 642
 643         skb->dev = sta->sdata->dev;
 644         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 645         memset(skb->cb, 0, sizeof(skb->cb));
 646         netif_rx_ni(skb);
 647 }
 648
 649 static void sta_apply_parameters(struct ieee80211_local *local,
 650                                  struct sta_info *sta,
 651                                  struct station_parameters *params)
 652 {
 653         unsigned long flags;
 654         u32 rates;
 655         int i, j;
 656         struct ieee80211_supported_band *sband;
 657         struct ieee80211_sub_if_data *sdata = sta->sdata;
 658         u32 mask, set;
 659
 660         sband = local->hw.wiphy->bands[local->oper_channel->band];
 661
 662         spin_lock_irqsave(&sta->flaglock, flags);
 663         mask = params->sta_flags_mask;
 664         set = params->sta_flags_set;
 665
 666         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 667                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 668                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 669                         sta->flags |= WLAN_STA_AUTHORIZED;
 670         }
 671
 672         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 673                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 674                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 675                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 676         }
 677
 678         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 679                 sta->flags &= ~WLAN_STA_WME;
 680                 sta->sta.wme = false;
 681                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 682                         sta->flags |= WLAN_STA_WME;
 683                         sta->sta.wme = true;
 684                 }
 685         }
 686
 687         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 688                 sta->flags &= ~WLAN_STA_MFP;
 689                 if (set & BIT(NL80211_STA_FLAG_MFP))
 690                         sta->flags |= WLAN_STA_MFP;
 691         }
 692
 693         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 694                 sta->flags &= ~WLAN_STA_AUTH;
 695                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 696                         sta->flags |= WLAN_STA_AUTH;
 697         }
 698         spin_unlock_irqrestore(&sta->flaglock, flags);
 699
 700         /*
 701          * cfg80211 validates this (1-2007) and allows setting the AID
 702          * only when creating a new station entry
 703          */
 704         if (params->aid)
 705                 sta->sta.aid = params->aid;
 706
 707         /*
 708          * FIXME: updating the following information is racy when this
 709          *        function is called from ieee80211_change_station().
 710          *        However, all this information should be static so
 711          *        maybe we should just reject attemps to change it.
 712          */
 713
 714         if (params->listen_interval >= 0)
 715                 sta->listen_interval = params->listen_interval;
 716
 717         if (params->supported_rates) {
 718                 rates = 0;
 719
 720                 for (i = 0; i < params->supported_rates_len; i++) {
 721                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 722                         for (j = 0; j < sband->n_bitrates; j++) {
 723                                 if (sband->bitrates[j].bitrate == rate)
 724                                         rates |= BIT(j);
 725                         }
 726                 }
 727                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 728         }
 729
 730         if (params->ht_capa)
 731                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 732                                                   params->ht_capa,
 733                                                   &sta->sta.ht_cap);
 734
 735         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 736 #ifdef CONFIG_MAC80211_MESH
 737                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 738                         switch (params->plink_state) {
 739                         case NL80211_PLINK_LISTEN:
 740                         case NL80211_PLINK_ESTAB:
 741                         case NL80211_PLINK_BLOCKED:
 742                                 sta->plink_state = params->plink_state;
 743                                 break;
 744                         default:
 745                                 /*  nothing  */
 746                                 break;
 747                         }
 748                 else
 749                         switch (params->plink_action) {
 750                         case PLINK_ACTION_OPEN:
 751                                 mesh_plink_open(sta);
 752                                 break;
 753                         case PLINK_ACTION_BLOCK:
 754                                 mesh_plink_block(sta);
 755                                 break;
 756                         }
 757 #endif
 758         }
 759 }
 760
 761 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 762                                  u8 *mac, struct station_parameters *params)
 763 {
 764         struct ieee80211_local *local = wiphy_priv(wiphy);
 765         struct sta_info *sta;
 766         struct ieee80211_sub_if_data *sdata;
 767         int err;
 768         int layer2_update;
 769
 770         if (params->vlan) {
 771                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 772
 773                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 774                     sdata->vif.type != NL80211_IFTYPE_AP)
 775                         return -EINVAL;
 776         } else
 777                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 778
 779         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 780                 return -EINVAL;
 781
 782         if (is_multicast_ether_addr(mac))
 783                 return -EINVAL;
 784
 785         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 786         if (!sta)
 787                 return -ENOMEM;
 788
 789         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 790
 791         sta_apply_parameters(local, sta, params);
 792
 793         rate_control_rate_init(sta);
 794
 795         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 796                 sdata->vif.type == NL80211_IFTYPE_AP;
 797
 798         err = sta_info_insert_rcu(sta);
 799         if (err) {
 800                 rcu_read_unlock();
 801                 return err;
 802         }
 803
 804         if (layer2_update)
 805                 ieee80211_send_layer2_update(sta);
 806
 807         rcu_read_unlock();
 808
 809         return 0;
 810 }
 811
 812 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 813                                  u8 *mac)
 814 {
 815         struct ieee80211_local *local = wiphy_priv(wiphy);
 816         struct ieee80211_sub_if_data *sdata;
 817
 818         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 819
 820         if (mac)
 821                 return sta_info_destroy_addr_bss(sdata, mac);
 822
 823         sta_info_flush(local, sdata);
 824         return 0;
 825 }
 826
 827 static int ieee80211_change_station(struct wiphy *wiphy,
 828                                     struct net_device *dev,
 829                                     u8 *mac,
 830                                     struct station_parameters *params)
 831 {
 832         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 833         struct ieee80211_local *local = wiphy_priv(wiphy);
 834         struct sta_info *sta;
 835         struct ieee80211_sub_if_data *vlansdata;
 836
 837         rcu_read_lock();
 838
 839         sta = sta_info_get_bss(sdata, mac);
 840         if (!sta) {
 841                 rcu_read_unlock();
 842                 return -ENOENT;
 843         }
 844
 845         if (params->vlan && params->vlan != sta->sdata->dev) {
 846                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 847
 848                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 849                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 850                         rcu_read_unlock();
 851                         return -EINVAL;
 852                 }
 853
 854                 if (params->vlan->ieee80211_ptr->use_4addr) {
 855                         if (vlansdata->u.vlan.sta) {
 856                                 rcu_read_unlock();
 857                                 return -EBUSY;
 858                         }
 859
 860                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 861                 }
 862
 863                 sta->sdata = vlansdata;
 864                 ieee80211_send_layer2_update(sta);
 865         }
 866
 867         sta_apply_parameters(local, sta, params);
 868
 869         rcu_read_unlock();
 870
 871         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 872             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 873                 ieee80211_recalc_ps(local, -1);
 874
 875         return 0;
 876 }
 877
 878 #ifdef CONFIG_MAC80211_MESH
 879 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 880                                  u8 *dst, u8 *next_hop)
 881 {
 882         struct ieee80211_sub_if_data *sdata;
 883         struct mesh_path *mpath;
 884         struct sta_info *sta;
 885         int err;
 886
 887         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 888
 889         rcu_read_lock();
 890         sta = sta_info_get(sdata, next_hop);
 891         if (!sta) {
 892                 rcu_read_unlock();
 893                 return -ENOENT;
 894         }
 895
 896         err = mesh_path_add(dst, sdata);
 897         if (err) {
 898                 rcu_read_unlock();
 899                 return err;
 900         }
 901
 902         mpath = mesh_path_lookup(dst, sdata);
 903         if (!mpath) {
 904                 rcu_read_unlock();
 905                 return -ENXIO;
 906         }
 907         mesh_path_fix_nexthop(mpath, sta);
 908
 909         rcu_read_unlock();
 910         return 0;
 911 }
 912
 913 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 914                                  u8 *dst)
 915 {
 916         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 917
 918         if (dst)
 919                 return mesh_path_del(dst, sdata);
 920
 921         mesh_path_flush(sdata);
 922         return 0;
 923 }
 924
 925 static int ieee80211_change_mpath(struct wiphy *wiphy,
 926                                     struct net_device *dev,
 927                                     u8 *dst, u8 *next_hop)
 928 {
 929         struct ieee80211_sub_if_data *sdata;
 930         struct mesh_path *mpath;
 931         struct sta_info *sta;
 932
 933         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 934
 935         rcu_read_lock();
 936
 937         sta = sta_info_get(sdata, next_hop);
 938         if (!sta) {
 939                 rcu_read_unlock();
 940                 return -ENOENT;
 941         }
 942
 943         mpath = mesh_path_lookup(dst, sdata);
 944         if (!mpath) {
 945                 rcu_read_unlock();
 946                 return -ENOENT;
 947         }
 948
 949         mesh_path_fix_nexthop(mpath, sta);
 950
 951         rcu_read_unlock();
 952         return 0;
 953 }
 954
 955 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 956                             struct mpath_info *pinfo)
 957 {
 958         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 959
 960         if (next_hop_sta)
 961                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 962         else
 963                 memset(next_hop, 0, ETH_ALEN);
 964
 965         pinfo->generation = mesh_paths_generation;
 966
 967         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 968                         MPATH_INFO_SN |
 969                         MPATH_INFO_METRIC |
 970                         MPATH_INFO_EXPTIME |
 971                         MPATH_INFO_DISCOVERY_TIMEOUT |
 972                         MPATH_INFO_DISCOVERY_RETRIES |
 973                         MPATH_INFO_FLAGS;
 974
 975         pinfo->frame_qlen = mpath->frame_queue.qlen;
 976         pinfo->sn = mpath->sn;
 977         pinfo->metric = mpath->metric;
 978         if (time_before(jiffies, mpath->exp_time))
 979                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 980         pinfo->discovery_timeout =
 981                         jiffies_to_msecs(mpath->discovery_timeout);
 982         pinfo->discovery_retries = mpath->discovery_retries;
 983         pinfo->flags = 0;
 984         if (mpath->flags & MESH_PATH_ACTIVE)
 985                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 986         if (mpath->flags & MESH_PATH_RESOLVING)
 987                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 988         if (mpath->flags & MESH_PATH_SN_VALID)
 989                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 990         if (mpath->flags & MESH_PATH_FIXED)
 991                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 992         if (mpath->flags & MESH_PATH_RESOLVING)
 993                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 994
 995         pinfo->flags = mpath->flags;
 996 }
 997
 998 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 999                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1000
1001 {
1002         struct ieee80211_sub_if_data *sdata;
1003         struct mesh_path *mpath;
1004
1005         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1006
1007         rcu_read_lock();
1008         mpath = mesh_path_lookup(dst, sdata);
1009         if (!mpath) {
1010                 rcu_read_unlock();
1011                 return -ENOENT;
1012         }
1013         memcpy(dst, mpath->dst, ETH_ALEN);
1014         mpath_set_pinfo(mpath, next_hop, pinfo);
1015         rcu_read_unlock();
1016         return 0;
1017 }
1018
1019 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1020                                  int idx, u8 *dst, u8 *next_hop,
1021                                  struct mpath_info *pinfo)
1022 {
1023         struct ieee80211_sub_if_data *sdata;
1024         struct mesh_path *mpath;
1025
1026         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1027
1028         rcu_read_lock();
1029         mpath = mesh_path_lookup_by_idx(idx, sdata);
1030         if (!mpath) {
1031                 rcu_read_unlock();
1032                 return -ENOENT;
1033         }
1034         memcpy(dst, mpath->dst, ETH_ALEN);
1035         mpath_set_pinfo(mpath, next_hop, pinfo);
1036         rcu_read_unlock();
1037         return 0;
1038 }
1039
1040 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1041                                 struct net_device *dev,
1042                                 struct mesh_config *conf)
1043 {
1044         struct ieee80211_sub_if_data *sdata;
1045         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1046
1047         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1048         return 0;
1049 }
1050
1051 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1052 {
1053         return (mask >> (parm-1)) & 0x1;
1054 }
1055
1056 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1057                 const struct mesh_setup *setup)
1058 {
1059         u8 *new_ie;
1060         const u8 *old_ie;
1061
1062         /* allocate information elements */
1063         new_ie = NULL;
1064         old_ie = ifmsh->ie;
1065
1066         if (setup->ie_len) {
1067                 new_ie = kmemdup(setup->ie, setup->ie_len,
1068                                 GFP_KERNEL);
1069                 if (!new_ie)
1070                         return -ENOMEM;
1071         }
1072         ifmsh->ie_len = setup->ie_len;
1073         ifmsh->ie = new_ie;
1074         kfree(old_ie);
1075
1076         /* now copy the rest of the setup parameters */
1077         ifmsh->mesh_id_len = setup->mesh_id_len;
1078         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1079         ifmsh->mesh_pp_id = setup->path_sel_proto;
1080         ifmsh->mesh_pm_id = setup->path_metric;
1081         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1082         if (setup->is_authenticated)
1083                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1084         if (setup->is_secure)
1085                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1086
1087         return 0;
1088 }
1089
1090 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1091                                         struct net_device *dev, u32 mask,
1092                                         const struct mesh_config *nconf)
1093 {
1094         struct mesh_config *conf;
1095         struct ieee80211_sub_if_data *sdata;
1096         struct ieee80211_if_mesh *ifmsh;
1097
1098         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1099         ifmsh = &sdata->u.mesh;
1100
1101         /* Set the config options which we are interested in setting */
1102         conf = &(sdata->u.mesh.mshcfg);
1103         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1104                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1105         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1106                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1107         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1108                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1109         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1110                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1111         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1112                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1113         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1114                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1115         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1116                 conf->dot11MeshTTL = nconf->element_ttl;
1117         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1118                 conf->auto_open_plinks = nconf->auto_open_plinks;
1119         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1120                 conf->dot11MeshHWMPmaxPREQretries =
1121                         nconf->dot11MeshHWMPmaxPREQretries;
1122         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1123                 conf->path_refresh_time = nconf->path_refresh_time;
1124         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1125                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1126         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1127                 conf->dot11MeshHWMPactivePathTimeout =
1128                         nconf->dot11MeshHWMPactivePathTimeout;
1129         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1130                 conf->dot11MeshHWMPpreqMinInterval =
1131                         nconf->dot11MeshHWMPpreqMinInterval;
1132         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1133                            mask))
1134                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1135                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1136         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1137                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1138                 ieee80211_mesh_root_setup(ifmsh);
1139         }
1140         return 0;
1141 }
1142
1143 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1144                                const struct mesh_config *conf,
1145                                const struct mesh_setup *setup)
1146 {
1147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1148         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1149         int err;
1150
1151         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1152         err = copy_mesh_setup(ifmsh, setup);
1153         if (err)
1154                 return err;
1155         ieee80211_start_mesh(sdata);
1156
1157         return 0;
1158 }
1159
1160 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1161 {
1162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1163
1164         ieee80211_stop_mesh(sdata);
1165
1166         return 0;
1167 }
1168 #endif
1169
1170 static int ieee80211_change_bss(struct wiphy *wiphy,
1171                                 struct net_device *dev,
1172                                 struct bss_parameters *params)
1173 {
1174         struct ieee80211_sub_if_data *sdata;
1175         u32 changed = 0;
1176
1177         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1178
1179         if (params->use_cts_prot >= 0) {
1180                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1181                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1182         }
1183         if (params->use_short_preamble >= 0) {
1184                 sdata->vif.bss_conf.use_short_preamble =
1185                         params->use_short_preamble;
1186                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1187         }
1188
1189         if (!sdata->vif.bss_conf.use_short_slot &&
1190             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1191                 sdata->vif.bss_conf.use_short_slot = true;
1192                 changed |= BSS_CHANGED_ERP_SLOT;
1193         }
1194
1195         if (params->use_short_slot_time >= 0) {
1196                 sdata->vif.bss_conf.use_short_slot =
1197                         params->use_short_slot_time;
1198                 changed |= BSS_CHANGED_ERP_SLOT;
1199         }
1200
1201         if (params->basic_rates) {
1202                 int i, j;
1203                 u32 rates = 0;
1204                 struct ieee80211_local *local = wiphy_priv(wiphy);
1205                 struct ieee80211_supported_band *sband =
1206                         wiphy->bands[local->oper_channel->band];
1207
1208                 for (i = 0; i < params->basic_rates_len; i++) {
1209                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1210                         for (j = 0; j < sband->n_bitrates; j++) {
1211                                 if (sband->bitrates[j].bitrate == rate)
1212                                         rates |= BIT(j);
1213                         }
1214                 }
1215                 sdata->vif.bss_conf.basic_rates = rates;
1216                 changed |= BSS_CHANGED_BASIC_RATES;
1217         }
1218
1219         if (params->ap_isolate >= 0) {
1220                 if (params->ap_isolate)
1221                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1222                 else
1223                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1224         }
1225
1226         if (params->ht_opmode >= 0) {
1227                 sdata->vif.bss_conf.ht_operation_mode =
1228                         (u16) params->ht_opmode;
1229                 changed |= BSS_CHANGED_HT;
1230         }
1231
1232         ieee80211_bss_info_change_notify(sdata, changed);
1233
1234         return 0;
1235 }
1236
1237 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1238                                     struct ieee80211_txq_params *params)
1239 {
1240         struct ieee80211_local *local = wiphy_priv(wiphy);
1241         struct ieee80211_tx_queue_params p;
1242
1243         if (!local->ops->conf_tx)
1244                 return -EOPNOTSUPP;
1245
1246         memset(&p, 0, sizeof(p));
1247         p.aifs = params->aifs;
1248         p.cw_max = params->cwmax;
1249         p.cw_min = params->cwmin;
1250         p.txop = params->txop;
1251
1252         /*
1253          * Setting tx queue params disables u-apsd because it's only
1254          * called in master mode.
1255          */
1256         p.uapsd = false;
1257
1258         if (params->queue >= local->hw.queues)
1259                 return -EINVAL;
1260
1261         local->tx_conf[params->queue] = p;
1262         if (drv_conf_tx(local, params->queue, &p)) {
1263                 wiphy_debug(local->hw.wiphy,
1264                             "failed to set TX queue parameters for queue %d\n",
1265                             params->queue);
1266                 return -EINVAL;
1267         }
1268
1269         return 0;
1270 }
1271
1272 static int ieee80211_set_channel(struct wiphy *wiphy,
1273                                  struct net_device *netdev,
1274                                  struct ieee80211_channel *chan,
1275                                  enum nl80211_channel_type channel_type)
1276 {
1277         struct ieee80211_local *local = wiphy_priv(wiphy);
1278         struct ieee80211_sub_if_data *sdata = NULL;
1279         struct ieee80211_channel *old_oper;
1280         enum nl80211_channel_type old_oper_type;
1281         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1282
1283         if (netdev)
1284                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1285
1286         switch (ieee80211_get_channel_mode(local, NULL)) {
1287         case CHAN_MODE_HOPPING:
1288                 return -EBUSY;
1289         case CHAN_MODE_FIXED:
1290                 if (local->oper_channel != chan)
1291                         return -EBUSY;
1292                 if (!sdata && local->_oper_channel_type == channel_type)
1293                         return 0;
1294                 break;
1295         case CHAN_MODE_UNDEFINED:
1296                 break;
1297         }
1298
1299         if (sdata)
1300                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1301         old_oper_type = local->_oper_channel_type;
1302
1303         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1304                 return -EBUSY;
1305
1306         old_oper = local->oper_channel;
1307         local->oper_channel = chan;
1308
1309         /* Update driver if changes were actually made. */
1310         if ((old_oper != local->oper_channel) ||
1311             (old_oper_type != local->_oper_channel_type))
1312                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1313
1314         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1315             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1316                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1317
1318         return 0;
1319 }
1320
1321 #ifdef CONFIG_PM
1322 static int ieee80211_suspend(struct wiphy *wiphy,
1323                              struct cfg80211_wowlan *wowlan)
1324 {
1325         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1326 }
1327
1328 static int ieee80211_resume(struct wiphy *wiphy)
1329 {
1330         return __ieee80211_resume(wiphy_priv(wiphy));
1331 }
1332 #else
1333 #define ieee80211_suspend NULL
1334 #define ieee80211_resume NULL
1335 #endif
1336
1337 static int ieee80211_scan(struct wiphy *wiphy,
1338                           struct net_device *dev,
1339                           struct cfg80211_scan_request *req)
1340 {
1341         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1342
1343         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1344         case NL80211_IFTYPE_STATION:
1345         case NL80211_IFTYPE_ADHOC:
1346         case NL80211_IFTYPE_MESH_POINT:
1347         case NL80211_IFTYPE_P2P_CLIENT:
1348                 break;
1349         case NL80211_IFTYPE_P2P_GO:
1350                 if (sdata->local->ops->hw_scan)
1351                         break;
1352                 /*
1353                  * FIXME: implement NoA while scanning in software,
1354                  * for now fall through to allow scanning only when
1355                  * beaconing hasn't been configured yet
1356                  */
1357         case NL80211_IFTYPE_AP:
1358                 if (sdata->u.ap.beacon)
1359                         return -EOPNOTSUPP;
1360                 break;
1361         default:
1362                 return -EOPNOTSUPP;
1363         }
1364
1365         return ieee80211_request_scan(sdata, req);
1366 }
1367
1368 static int
1369 ieee80211_sched_scan_start(struct wiphy *wiphy,
1370                            struct net_device *dev,
1371                            struct cfg80211_sched_scan_request *req)
1372 {
1373         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1374
1375         if (!sdata->local->ops->sched_scan_start)
1376                 return -EOPNOTSUPP;
1377
1378         return ieee80211_request_sched_scan_start(sdata, req);
1379 }
1380
1381 static int
1382 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1383 {
1384         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1385
1386         if (!sdata->local->ops->sched_scan_stop)
1387                 return -EOPNOTSUPP;
1388
1389         return ieee80211_request_sched_scan_stop(sdata);
1390 }
1391
1392 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1393                           struct cfg80211_auth_request *req)
1394 {
1395         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1396 }
1397
1398 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1399                            struct cfg80211_assoc_request *req)
1400 {
1401         struct ieee80211_local *local = wiphy_priv(wiphy);
1402         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1403
1404         switch (ieee80211_get_channel_mode(local, sdata)) {
1405         case CHAN_MODE_HOPPING:
1406                 return -EBUSY;
1407         case CHAN_MODE_FIXED:
1408                 if (local->oper_channel == req->bss->channel)
1409                         break;
1410                 return -EBUSY;
1411         case CHAN_MODE_UNDEFINED:
1412                 break;
1413         }
1414
1415         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1416 }
1417
1418 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1419                             struct cfg80211_deauth_request *req,
1420                             void *cookie)
1421 {
1422         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1423                                     req, cookie);
1424 }
1425
1426 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1427                               struct cfg80211_disassoc_request *req,
1428                               void *cookie)
1429 {
1430         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1431                                       req, cookie);
1432 }
1433
1434 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1435                                struct cfg80211_ibss_params *params)
1436 {
1437         struct ieee80211_local *local = wiphy_priv(wiphy);
1438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1439
1440         switch (ieee80211_get_channel_mode(local, sdata)) {
1441         case CHAN_MODE_HOPPING:
1442                 return -EBUSY;
1443         case CHAN_MODE_FIXED:
1444                 if (!params->channel_fixed)
1445                         return -EBUSY;
1446                 if (local->oper_channel == params->channel)
1447                         break;
1448                 return -EBUSY;
1449         case CHAN_MODE_UNDEFINED:
1450                 break;
1451         }
1452
1453         return ieee80211_ibss_join(sdata, params);
1454 }
1455
1456 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1457 {
1458         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1459
1460         return ieee80211_ibss_leave(sdata);
1461 }
1462
1463 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1464 {
1465         struct ieee80211_local *local = wiphy_priv(wiphy);
1466         int err;
1467
1468         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1469                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1470
1471                 if (err)
1472                         return err;
1473         }
1474
1475         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1476                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1477
1478                 if (err)
1479                         return err;
1480         }
1481
1482         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1483                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1484
1485                 if (err)
1486                         return err;
1487         }
1488
1489         if (changed & WIPHY_PARAM_RETRY_SHORT)
1490                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1491         if (changed & WIPHY_PARAM_RETRY_LONG)
1492                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1493         if (changed &
1494             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1495                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1496
1497         return 0;
1498 }
1499
1500 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1501                                   enum nl80211_tx_power_setting type, int mbm)
1502 {
1503         struct ieee80211_local *local = wiphy_priv(wiphy);
1504         struct ieee80211_channel *chan = local->hw.conf.channel;
1505         u32 changes = 0;
1506
1507         switch (type) {
1508         case NL80211_TX_POWER_AUTOMATIC:
1509                 local->user_power_level = -1;
1510                 break;
1511         case NL80211_TX_POWER_LIMITED:
1512                 if (mbm < 0 || (mbm % 100))
1513                         return -EOPNOTSUPP;
1514                 local->user_power_level = MBM_TO_DBM(mbm);
1515                 break;
1516         case NL80211_TX_POWER_FIXED:
1517                 if (mbm < 0 || (mbm % 100))
1518                         return -EOPNOTSUPP;
1519                 /* TODO: move to cfg80211 when it knows the channel */
1520                 if (MBM_TO_DBM(mbm) > chan->max_power)
1521                         return -EINVAL;
1522                 local->user_power_level = MBM_TO_DBM(mbm);
1523                 break;
1524         }
1525
1526         ieee80211_hw_config(local, changes);
1527
1528         return 0;
1529 }
1530
1531 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1532 {
1533         struct ieee80211_local *local = wiphy_priv(wiphy);
1534
1535         *dbm = local->hw.conf.power_level;
1536
1537         return 0;
1538 }
1539
1540 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1541                                   const u8 *addr)
1542 {
1543         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544
1545         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1546
1547         return 0;
1548 }
1549
1550 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1551 {
1552         struct ieee80211_local *local = wiphy_priv(wiphy);
1553
1554         drv_rfkill_poll(local);
1555 }
1556
1557 #ifdef CONFIG_NL80211_TESTMODE
1558 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1559 {
1560         struct ieee80211_local *local = wiphy_priv(wiphy);
1561
1562         if (!local->ops->testmode_cmd)
1563                 return -EOPNOTSUPP;
1564
1565         return local->ops->testmode_cmd(&local->hw, data, len);
1566 }
1567
1568 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1569                                    struct sk_buff *skb,
1570                                    struct netlink_callback *cb,
1571                                    void *data, int len)
1572 {
1573         struct ieee80211_local *local = wiphy_priv(wiphy);
1574
1575         if (!local->ops->testmode_dump)
1576                 return -EOPNOTSUPP;
1577
1578         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1579 }
1580 #endif
1581
1582 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1583                              enum ieee80211_smps_mode smps_mode)
1584 {
1585         const u8 *ap;
1586         enum ieee80211_smps_mode old_req;
1587         int err;
1588
1589         lockdep_assert_held(&sdata->u.mgd.mtx);
1590
1591         old_req = sdata->u.mgd.req_smps;
1592         sdata->u.mgd.req_smps = smps_mode;
1593
1594         if (old_req == smps_mode &&
1595             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1596                 return 0;
1597
1598         /*
1599          * If not associated, or current association is not an HT
1600          * association, there's no need to send an action frame.
1601          */
1602         if (!sdata->u.mgd.associated ||
1603             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1604                 mutex_lock(&sdata->local->iflist_mtx);
1605                 ieee80211_recalc_smps(sdata->local);
1606                 mutex_unlock(&sdata->local->iflist_mtx);
1607                 return 0;
1608         }
1609
1610         ap = sdata->u.mgd.associated->bssid;
1611
1612         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1613                 if (sdata->u.mgd.powersave)
1614                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1615                 else
1616                         smps_mode = IEEE80211_SMPS_OFF;
1617         }
1618
1619         /* send SM PS frame to AP */
1620         err = ieee80211_send_smps_action(sdata, smps_mode,
1621                                          ap, ap);
1622         if (err)
1623                 sdata->u.mgd.req_smps = old_req;
1624
1625         return err;
1626 }
1627
1628 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1629                                     bool enabled, int timeout)
1630 {
1631         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1632         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1633
1634         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1635                 return -EOPNOTSUPP;
1636
1637         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1638                 return -EOPNOTSUPP;
1639
1640         if (enabled == sdata->u.mgd.powersave &&
1641             timeout == local->dynamic_ps_forced_timeout)
1642                 return 0;
1643
1644         sdata->u.mgd.powersave = enabled;
1645         local->dynamic_ps_forced_timeout = timeout;
1646
1647         /* no change, but if automatic follow powersave */
1648         mutex_lock(&sdata->u.mgd.mtx);
1649         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1650         mutex_unlock(&sdata->u.mgd.mtx);
1651
1652         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1653                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1654
1655         ieee80211_recalc_ps(local, -1);
1656
1657         return 0;
1658 }
1659
1660 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1661                                          struct net_device *dev,
1662                                          s32 rssi_thold, u32 rssi_hyst)
1663 {
1664         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1665         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1666         struct ieee80211_vif *vif = &sdata->vif;
1667         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1668
1669         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1670             rssi_hyst == bss_conf->cqm_rssi_hyst)
1671                 return 0;
1672
1673         bss_conf->cqm_rssi_thold = rssi_thold;
1674         bss_conf->cqm_rssi_hyst = rssi_hyst;
1675
1676         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1677                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1678                         return -EOPNOTSUPP;
1679                 return 0;
1680         }
1681
1682         /* tell the driver upon association, unless already associated */
1683         if (sdata->u.mgd.associated)
1684                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1685
1686         return 0;
1687 }
1688
1689 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1690                                       struct net_device *dev,
1691                                       const u8 *addr,
1692                                       const struct cfg80211_bitrate_mask *mask)
1693 {
1694         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1696         int i, ret;
1697
1698         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1699                 ret = drv_set_bitrate_mask(local, sdata, mask);
1700                 if (ret)
1701                         return ret;
1702         }
1703
1704         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1705                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1706
1707         return 0;
1708 }
1709
1710 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1711                                           struct net_device *dev,
1712                                           struct ieee80211_channel *chan,
1713                                           enum nl80211_channel_type chantype,
1714                                           unsigned int duration, u64 *cookie)
1715 {
1716         int ret;
1717         u32 random_cookie;
1718
1719         lockdep_assert_held(&local->mtx);
1720
1721         if (local->hw_roc_cookie)
1722                 return -EBUSY;
1723         /* must be nonzero */
1724         random_cookie = random32() | 1;
1725
1726         *cookie = random_cookie;
1727         local->hw_roc_dev = dev;
1728         local->hw_roc_cookie = random_cookie;
1729         local->hw_roc_channel = chan;
1730         local->hw_roc_channel_type = chantype;
1731         local->hw_roc_duration = duration;
1732         ret = drv_remain_on_channel(local, chan, chantype, duration);
1733         if (ret) {
1734                 local->hw_roc_channel = NULL;
1735                 local->hw_roc_cookie = 0;
1736         }
1737
1738         return ret;
1739 }
1740
1741 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1742                                        struct net_device *dev,
1743                                        struct ieee80211_channel *chan,
1744                                        enum nl80211_channel_type channel_type,
1745                                        unsigned int duration,
1746                                        u64 *cookie)
1747 {
1748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1749         struct ieee80211_local *local = sdata->local;
1750
1751         if (local->ops->remain_on_channel) {
1752                 int ret;
1753
1754                 mutex_lock(&local->mtx);
1755                 ret = ieee80211_remain_on_channel_hw(local, dev,
1756                                                      chan, channel_type,
1757                                                      duration, cookie);
1758                 local->hw_roc_for_tx = false;
1759                 mutex_unlock(&local->mtx);
1760
1761                 return ret;
1762         }
1763
1764         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1765                                               duration, cookie);
1766 }
1767
1768 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1769                                                  u64 cookie)
1770 {
1771         int ret;
1772
1773         lockdep_assert_held(&local->mtx);
1774
1775         if (local->hw_roc_cookie != cookie)
1776                 return -ENOENT;
1777
1778         ret = drv_cancel_remain_on_channel(local);
1779         if (ret)
1780                 return ret;
1781
1782         local->hw_roc_cookie = 0;
1783         local->hw_roc_channel = NULL;
1784
1785         ieee80211_recalc_idle(local);
1786
1787         return 0;
1788 }
1789
1790 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1791                                               struct net_device *dev,
1792                                               u64 cookie)
1793 {
1794         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1795         struct ieee80211_local *local = sdata->local;
1796
1797         if (local->ops->cancel_remain_on_channel) {
1798                 int ret;
1799
1800                 mutex_lock(&local->mtx);
1801                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1802                 mutex_unlock(&local->mtx);
1803
1804                 return ret;
1805         }
1806
1807         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1808 }
1809
1810 static enum work_done_result
1811 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1812 {
1813         /*
1814          * Use the data embedded in the work struct for reporting
1815          * here so if the driver mangled the SKB before dropping
1816          * it (which is the only way we really should get here)
1817          * then we don't report mangled data.
1818          *
1819          * If there was no wait time, then by the time we get here
1820          * the driver will likely not have reported the status yet,
1821          * so in that case userspace will have to deal with it.
1822          */
1823
1824         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1825                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1826                                         (unsigned long) wk->offchan_tx.frame,
1827                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1828
1829         return WORK_DONE_DESTROY;
1830 }
1831
1832 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1833                              struct ieee80211_channel *chan, bool offchan,
1834                              enum nl80211_channel_type channel_type,
1835                              bool channel_type_valid, unsigned int wait,
1836                              const u8 *buf, size_t len, u64 *cookie)
1837 {
1838         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1839         struct ieee80211_local *local = sdata->local;
1840         struct sk_buff *skb;
1841         struct sta_info *sta;
1842         struct ieee80211_work *wk;
1843         const struct ieee80211_mgmt *mgmt = (void *)buf;
1844         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1845                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1846         bool is_offchan = false;
1847
1848         /* Check that we are on the requested channel for transmission */
1849         if (chan != local->tmp_channel &&
1850             chan != local->oper_channel)
1851                 is_offchan = true;
1852         if (channel_type_valid &&
1853             (channel_type != local->tmp_channel_type &&
1854              channel_type != local->_oper_channel_type))
1855                 is_offchan = true;
1856
1857         if (chan == local->hw_roc_channel) {
1858                 /* TODO: check channel type? */
1859                 is_offchan = false;
1860                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1861         }
1862
1863         if (is_offchan && !offchan)
1864                 return -EBUSY;
1865
1866         switch (sdata->vif.type) {
1867         case NL80211_IFTYPE_ADHOC:
1868         case NL80211_IFTYPE_AP:
1869         case NL80211_IFTYPE_AP_VLAN:
1870         case NL80211_IFTYPE_P2P_GO:
1871         case NL80211_IFTYPE_MESH_POINT:
1872                 if (!ieee80211_is_action(mgmt->frame_control) ||
1873                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1874                         break;
1875                 rcu_read_lock();
1876                 sta = sta_info_get(sdata, mgmt->da);
1877                 rcu_read_unlock();
1878                 if (!sta)
1879                         return -ENOLINK;
1880                 break;
1881         case NL80211_IFTYPE_STATION:
1882         case NL80211_IFTYPE_P2P_CLIENT:
1883                 break;
1884         default:
1885                 return -EOPNOTSUPP;
1886         }
1887
1888         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1889         if (!skb)
1890                 return -ENOMEM;
1891         skb_reserve(skb, local->hw.extra_tx_headroom);
1892
1893         memcpy(skb_put(skb, len), buf, len);
1894
1895         IEEE80211_SKB_CB(skb)->flags = flags;
1896
1897         skb->dev = sdata->dev;
1898
1899         *cookie = (unsigned long) skb;
1900
1901         if (is_offchan && local->ops->offchannel_tx) {
1902                 int ret;
1903
1904                 IEEE80211_SKB_CB(skb)->band = chan->band;
1905
1906                 mutex_lock(&local->mtx);
1907
1908                 if (local->hw_offchan_tx_cookie) {
1909                         mutex_unlock(&local->mtx);
1910                         return -EBUSY;
1911                 }
1912
1913                 /* TODO: bitrate control, TX processing? */
1914                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1915
1916                 if (ret == 0)
1917                         local->hw_offchan_tx_cookie = *cookie;
1918                 mutex_unlock(&local->mtx);
1919
1920                 /*
1921                  * Allow driver to return 1 to indicate it wants to have the
1922                  * frame transmitted with a remain_on_channel + regular TX.
1923                  */
1924                 if (ret != 1)
1925                         return ret;
1926         }
1927
1928         if (is_offchan && local->ops->remain_on_channel) {
1929                 unsigned int duration;
1930                 int ret;
1931
1932                 mutex_lock(&local->mtx);
1933                 /*
1934                  * If the duration is zero, then the driver
1935                  * wouldn't actually do anything. Set it to
1936                  * 100 for now.
1937                  *
1938                  * TODO: cancel the off-channel operation
1939                  *       when we get the SKB's TX status and
1940                  *       the wait time was zero before.
1941                  */
1942                 duration = 100;
1943                 if (wait)
1944                         duration = wait;
1945                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1946                                                      channel_type,
1947                                                      duration, cookie);
1948                 if (ret) {
1949                         kfree_skb(skb);
1950                         mutex_unlock(&local->mtx);
1951                         return ret;
1952                 }
1953
1954                 local->hw_roc_for_tx = true;
1955                 local->hw_roc_duration = wait;
1956
1957                 /*
1958                  * queue up frame for transmission after
1959                  * ieee80211_ready_on_channel call
1960                  */
1961
1962                 /* modify cookie to prevent API mismatches */
1963                 *cookie ^= 2;
1964                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1965                 local->hw_roc_skb = skb;
1966                 local->hw_roc_skb_for_status = skb;
1967                 mutex_unlock(&local->mtx);
1968
1969                 return 0;
1970         }
1971
1972         /*
1973          * Can transmit right away if the channel was the
1974          * right one and there's no wait involved... If a
1975          * wait is involved, we might otherwise not be on
1976          * the right channel for long enough!
1977          */
1978         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1979                 ieee80211_tx_skb(sdata, skb);
1980                 return 0;
1981         }
1982
1983         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1984         if (!wk) {
1985                 kfree_skb(skb);
1986                 return -ENOMEM;
1987         }
1988
1989         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1990         wk->chan = chan;
1991         wk->chan_type = channel_type;
1992         wk->sdata = sdata;
1993         wk->done = ieee80211_offchan_tx_done;
1994         wk->offchan_tx.frame = skb;
1995         wk->offchan_tx.wait = wait;
1996         wk->ie_len = len;
1997         memcpy(wk->ie, buf, len);
1998
1999         ieee80211_add_work(wk);
2000         return 0;
2001 }
2002
2003 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2004                                          struct net_device *dev,
2005                                          u64 cookie)
2006 {
2007         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2008         struct ieee80211_local *local = sdata->local;
2009         struct ieee80211_work *wk;
2010         int ret = -ENOENT;
2011
2012         mutex_lock(&local->mtx);
2013
2014         if (local->ops->offchannel_tx_cancel_wait &&
2015             local->hw_offchan_tx_cookie == cookie) {
2016                 ret = drv_offchannel_tx_cancel_wait(local);
2017
2018                 if (!ret)
2019                         local->hw_offchan_tx_cookie = 0;
2020
2021                 mutex_unlock(&local->mtx);
2022
2023                 return ret;
2024         }
2025
2026         if (local->ops->cancel_remain_on_channel) {
2027                 cookie ^= 2;
2028                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2029
2030                 if (ret == 0) {
2031                         kfree_skb(local->hw_roc_skb);
2032                         local->hw_roc_skb = NULL;
2033                         local->hw_roc_skb_for_status = NULL;
2034                 }
2035
2036                 mutex_unlock(&local->mtx);
2037
2038                 return ret;
2039         }
2040
2041         list_for_each_entry(wk, &local->work_list, list) {
2042                 if (wk->sdata != sdata)
2043                         continue;
2044
2045                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2046                         continue;
2047
2048                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2049                         continue;
2050
2051                 wk->timeout = jiffies;
2052
2053                 ieee80211_queue_work(&local->hw, &local->work_work);
2054                 ret = 0;
2055                 break;
2056         }
2057         mutex_unlock(&local->mtx);
2058
2059         return ret;
2060 }
2061
2062 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2063                                           struct net_device *dev,
2064                                           u16 frame_type, bool reg)
2065 {
2066         struct ieee80211_local *local = wiphy_priv(wiphy);
2067
2068         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2069                 return;
2070
2071         if (reg)
2072                 local->probe_req_reg++;
2073         else
2074                 local->probe_req_reg--;
2075
2076         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2077 }
2078
2079 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2080 {
2081         struct ieee80211_local *local = wiphy_priv(wiphy);
2082
2083         if (local->started)
2084                 return -EOPNOTSUPP;
2085
2086         return drv_set_antenna(local, tx_ant, rx_ant);
2087 }
2088
2089 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2090 {
2091         struct ieee80211_local *local = wiphy_priv(wiphy);
2092
2093         return drv_get_antenna(local, tx_ant, rx_ant);
2094 }
2095
2096 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2097 {
2098         struct ieee80211_local *local = wiphy_priv(wiphy);
2099
2100         return drv_set_ringparam(local, tx, rx);
2101 }
2102
2103 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2104                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2105 {
2106         struct ieee80211_local *local = wiphy_priv(wiphy);
2107
2108         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2109 }
2110
2111 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2112                                     struct net_device *dev,
2113                                     struct cfg80211_gtk_rekey_data *data)
2114 {
2115         struct ieee80211_local *local = wiphy_priv(wiphy);
2116         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2117
2118         if (!local->ops->set_rekey_data)
2119                 return -EOPNOTSUPP;
2120
2121         drv_set_rekey_data(local, sdata, data);
2122
2123         return 0;
2124 }
2125
2126 struct cfg80211_ops mac80211_config_ops = {
2127         .add_virtual_intf = ieee80211_add_iface,
2128         .del_virtual_intf = ieee80211_del_iface,
2129         .change_virtual_intf = ieee80211_change_iface,
2130         .add_key = ieee80211_add_key,
2131         .del_key = ieee80211_del_key,
2132         .get_key = ieee80211_get_key,
2133         .set_default_key = ieee80211_config_default_key,
2134         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2135         .add_beacon = ieee80211_add_beacon,
2136         .set_beacon = ieee80211_set_beacon,
2137         .del_beacon = ieee80211_del_beacon,
2138         .add_station = ieee80211_add_station,
2139         .del_station = ieee80211_del_station,
2140         .change_station = ieee80211_change_station,
2141         .get_station = ieee80211_get_station,
2142         .dump_station = ieee80211_dump_station,
2143         .dump_survey = ieee80211_dump_survey,
2144 #ifdef CONFIG_MAC80211_MESH
2145         .add_mpath = ieee80211_add_mpath,
2146         .del_mpath = ieee80211_del_mpath,
2147         .change_mpath = ieee80211_change_mpath,
2148         .get_mpath = ieee80211_get_mpath,
2149         .dump_mpath = ieee80211_dump_mpath,
2150         .update_mesh_config = ieee80211_update_mesh_config,
2151         .get_mesh_config = ieee80211_get_mesh_config,
2152         .join_mesh = ieee80211_join_mesh,
2153         .leave_mesh = ieee80211_leave_mesh,
2154 #endif
2155         .change_bss = ieee80211_change_bss,
2156         .set_txq_params = ieee80211_set_txq_params,
2157         .set_channel = ieee80211_set_channel,
2158         .suspend = ieee80211_suspend,
2159         .resume = ieee80211_resume,
2160         .scan = ieee80211_scan,
2161         .sched_scan_start = ieee80211_sched_scan_start,
2162         .sched_scan_stop = ieee80211_sched_scan_stop,
2163         .auth = ieee80211_auth,
2164         .assoc = ieee80211_assoc,
2165         .deauth = ieee80211_deauth,
2166         .disassoc = ieee80211_disassoc,
2167         .join_ibss = ieee80211_join_ibss,
2168         .leave_ibss = ieee80211_leave_ibss,
2169         .set_wiphy_params = ieee80211_set_wiphy_params,
2170         .set_tx_power = ieee80211_set_tx_power,
2171         .get_tx_power = ieee80211_get_tx_power,
2172         .set_wds_peer = ieee80211_set_wds_peer,
2173         .rfkill_poll = ieee80211_rfkill_poll,
2174         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2175         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2176         .set_power_mgmt = ieee80211_set_power_mgmt,
2177         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2178         .remain_on_channel = ieee80211_remain_on_channel,
2179         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2180         .mgmt_tx = ieee80211_mgmt_tx,
2181         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2182         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2183         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2184         .set_antenna = ieee80211_set_antenna,
2185         .get_antenna = ieee80211_get_antenna,
2186         .set_ringparam = ieee80211_set_ringparam,
2187         .get_ringparam = ieee80211_get_ringparam,
2188         .set_rekey_data = ieee80211_set_rekey_data,
2189 };