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 int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                enum nl80211_iftype type, u32 *flags,
  24                                struct vif_params *params)
  25 {
  26         struct ieee80211_local *local = wiphy_priv(wiphy);
  27         struct net_device *dev;
  28         struct ieee80211_sub_if_data *sdata;
  29         int err;
  30
  31         err = ieee80211_if_add(local, name, &dev, type, params);
  32         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  33                 return err;
  34
  35         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  36         sdata->u.mntr_flags = *flags;
  37         return 0;
  38 }
  39
  40 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  41 {
  42         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  43
  44         return 0;
  45 }
  46
  47 static int ieee80211_change_iface(struct wiphy *wiphy,
  48                                   struct net_device *dev,
  49                                   enum nl80211_iftype type, u32 *flags,
  50                                   struct vif_params *params)
  51 {
  52         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  53         int ret;
  54
  55         ret = ieee80211_if_change_type(sdata, type);
  56         if (ret)
  57                 return ret;
  58
  59         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  60                 ieee80211_sdata_set_mesh_id(sdata,
  61                                             params->mesh_id_len,
  62                                             params->mesh_id);
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 sta = sta_info_get_bss(sdata, mac_addr);
 141                 if (!sta) {
 142                         ieee80211_key_free(sdata->local, key);
 143                         err = -ENOENT;
 144                         goto out_unlock;
 145                 }
 146         }
 147
 148         err = ieee80211_key_link(key, sdata, sta);
 149         if (err)
 150                 ieee80211_key_free(sdata->local, key);
 151
 152  out_unlock:
 153         mutex_unlock(&sdata->local->sta_mtx);
 154
 155         return err;
 156 }
 157
 158 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 159                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 160 {
 161         struct ieee80211_sub_if_data *sdata;
 162         struct sta_info *sta;
 163         int ret;
 164
 165         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 166
 167         mutex_lock(&sdata->local->sta_mtx);
 168
 169         if (mac_addr) {
 170                 ret = -ENOENT;
 171
 172                 sta = sta_info_get_bss(sdata, mac_addr);
 173                 if (!sta)
 174                         goto out_unlock;
 175
 176                 if (pairwise) {
 177                         if (sta->ptk) {
 178                                 ieee80211_key_free(sdata->local, sta->ptk);
 179                                 ret = 0;
 180                         }
 181                 } else {
 182                         if (sta->gtk[key_idx]) {
 183                                 ieee80211_key_free(sdata->local,
 184                                                    sta->gtk[key_idx]);
 185                                 ret = 0;
 186                         }
 187                 }
 188
 189                 goto out_unlock;
 190         }
 191
 192         if (!sdata->keys[key_idx]) {
 193                 ret = -ENOENT;
 194                 goto out_unlock;
 195         }
 196
 197         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 198         WARN_ON(sdata->keys[key_idx]);
 199
 200         ret = 0;
 201  out_unlock:
 202         mutex_unlock(&sdata->local->sta_mtx);
 203
 204         return ret;
 205 }
 206
 207 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 208                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 209                              void *cookie,
 210                              void (*callback)(void *cookie,
 211                                               struct key_params *params))
 212 {
 213         struct ieee80211_sub_if_data *sdata;
 214         struct sta_info *sta = NULL;
 215         u8 seq[6] = {0};
 216         struct key_params params;
 217         struct ieee80211_key *key = NULL;
 218         u32 iv32;
 219         u16 iv16;
 220         int err = -ENOENT;
 221
 222         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 223
 224         rcu_read_lock();
 225
 226         if (mac_addr) {
 227                 sta = sta_info_get_bss(sdata, mac_addr);
 228                 if (!sta)
 229                         goto out;
 230
 231                 if (pairwise)
 232                         key = sta->ptk;
 233                 else if (key_idx < NUM_DEFAULT_KEYS)
 234                         key = sta->gtk[key_idx];
 235         } else
 236                 key = sdata->keys[key_idx];
 237
 238         if (!key)
 239                 goto out;
 240
 241         memset(&params, 0, sizeof(params));
 242
 243         params.cipher = key->conf.cipher;
 244
 245         switch (key->conf.cipher) {
 246         case WLAN_CIPHER_SUITE_TKIP:
 247                 iv32 = key->u.tkip.tx.iv32;
 248                 iv16 = key->u.tkip.tx.iv16;
 249
 250                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 251                         drv_get_tkip_seq(sdata->local,
 252                                          key->conf.hw_key_idx,
 253                                          &iv32, &iv16);
 254
 255                 seq[0] = iv16 & 0xff;
 256                 seq[1] = (iv16 >> 8) & 0xff;
 257                 seq[2] = iv32 & 0xff;
 258                 seq[3] = (iv32 >> 8) & 0xff;
 259                 seq[4] = (iv32 >> 16) & 0xff;
 260                 seq[5] = (iv32 >> 24) & 0xff;
 261                 params.seq = seq;
 262                 params.seq_len = 6;
 263                 break;
 264         case WLAN_CIPHER_SUITE_CCMP:
 265                 seq[0] = key->u.ccmp.tx_pn[5];
 266                 seq[1] = key->u.ccmp.tx_pn[4];
 267                 seq[2] = key->u.ccmp.tx_pn[3];
 268                 seq[3] = key->u.ccmp.tx_pn[2];
 269                 seq[4] = key->u.ccmp.tx_pn[1];
 270                 seq[5] = key->u.ccmp.tx_pn[0];
 271                 params.seq = seq;
 272                 params.seq_len = 6;
 273                 break;
 274         case WLAN_CIPHER_SUITE_AES_CMAC:
 275                 seq[0] = key->u.aes_cmac.tx_pn[5];
 276                 seq[1] = key->u.aes_cmac.tx_pn[4];
 277                 seq[2] = key->u.aes_cmac.tx_pn[3];
 278                 seq[3] = key->u.aes_cmac.tx_pn[2];
 279                 seq[4] = key->u.aes_cmac.tx_pn[1];
 280                 seq[5] = key->u.aes_cmac.tx_pn[0];
 281                 params.seq = seq;
 282                 params.seq_len = 6;
 283                 break;
 284         }
 285
 286         params.key = key->conf.key;
 287         params.key_len = key->conf.keylen;
 288
 289         callback(cookie, &params);
 290         err = 0;
 291
 292  out:
 293         rcu_read_unlock();
 294         return err;
 295 }
 296
 297 static int ieee80211_config_default_key(struct wiphy *wiphy,
 298                                         struct net_device *dev,
 299                                         u8 key_idx)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 320 {
 321         struct ieee80211_sub_if_data *sdata = sta->sdata;
 322
 323         sinfo->generation = sdata->local->sta_generation;
 324
 325         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 326                         STATION_INFO_RX_BYTES |
 327                         STATION_INFO_TX_BYTES |
 328                         STATION_INFO_RX_PACKETS |
 329                         STATION_INFO_TX_PACKETS |
 330                         STATION_INFO_TX_RETRIES |
 331                         STATION_INFO_TX_FAILED |
 332                         STATION_INFO_TX_BITRATE;
 333
 334         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 335         sinfo->rx_bytes = sta->rx_bytes;
 336         sinfo->tx_bytes = sta->tx_bytes;
 337         sinfo->rx_packets = sta->rx_packets;
 338         sinfo->tx_packets = sta->tx_packets;
 339         sinfo->tx_retries = sta->tx_retry_count;
 340         sinfo->tx_failed = sta->tx_retry_failed;
 341
 342         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 343             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 344                 sinfo->filled |= STATION_INFO_SIGNAL;
 345                 sinfo->signal = (s8)sta->last_signal;
 346         }
 347
 348         sinfo->txrate.flags = 0;
 349         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 350                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 351         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 352                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 353         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 354                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 355
 356         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 357                 struct ieee80211_supported_band *sband;
 358                 sband = sta->local->hw.wiphy->bands[
 359                                 sta->local->hw.conf.channel->band];
 360                 sinfo->txrate.legacy =
 361                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 362         } else
 363                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 364
 365         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 366 #ifdef CONFIG_MAC80211_MESH
 367                 sinfo->filled |= STATION_INFO_LLID |
 368                                  STATION_INFO_PLID |
 369                                  STATION_INFO_PLINK_STATE;
 370
 371                 sinfo->llid = le16_to_cpu(sta->llid);
 372                 sinfo->plid = le16_to_cpu(sta->plid);
 373                 sinfo->plink_state = sta->plink_state;
 374 #endif
 375         }
 376 }
 377
 378
 379 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 380                                  int idx, u8 *mac, struct station_info *sinfo)
 381 {
 382         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 383         struct sta_info *sta;
 384         int ret = -ENOENT;
 385
 386         rcu_read_lock();
 387
 388         sta = sta_info_get_by_idx(sdata, idx);
 389         if (sta) {
 390                 ret = 0;
 391                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 392                 sta_set_sinfo(sta, sinfo);
 393         }
 394
 395         rcu_read_unlock();
 396
 397         return ret;
 398 }
 399
 400 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 401                                  int idx, struct survey_info *survey)
 402 {
 403         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 404
 405         return drv_get_survey(local, idx, survey);
 406 }
 407
 408 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 409                                  u8 *mac, struct station_info *sinfo)
 410 {
 411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 412         struct sta_info *sta;
 413         int ret = -ENOENT;
 414
 415         rcu_read_lock();
 416
 417         sta = sta_info_get_bss(sdata, mac);
 418         if (sta) {
 419                 ret = 0;
 420                 sta_set_sinfo(sta, sinfo);
 421         }
 422
 423         rcu_read_unlock();
 424
 425         return ret;
 426 }
 427
 428 /*
 429  * This handles both adding a beacon and setting new beacon info
 430  */
 431 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 432                                    struct beacon_parameters *params)
 433 {
 434         struct beacon_data *new, *old;
 435         int new_head_len, new_tail_len;
 436         int size;
 437         int err = -EINVAL;
 438
 439         old = sdata->u.ap.beacon;
 440
 441         /* head must not be zero-length */
 442         if (params->head && !params->head_len)
 443                 return -EINVAL;
 444
 445         /*
 446          * This is a kludge. beacon interval should really be part
 447          * of the beacon information.
 448          */
 449         if (params->interval &&
 450             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 451                 sdata->vif.bss_conf.beacon_int = params->interval;
 452                 ieee80211_bss_info_change_notify(sdata,
 453                                                  BSS_CHANGED_BEACON_INT);
 454         }
 455
 456         /* Need to have a beacon head if we don't have one yet */
 457         if (!params->head && !old)
 458                 return err;
 459
 460         /* sorry, no way to start beaconing without dtim period */
 461         if (!params->dtim_period && !old)
 462                 return err;
 463
 464         /* new or old head? */
 465         if (params->head)
 466                 new_head_len = params->head_len;
 467         else
 468                 new_head_len = old->head_len;
 469
 470         /* new or old tail? */
 471         if (params->tail || !old)
 472                 /* params->tail_len will be zero for !params->tail */
 473                 new_tail_len = params->tail_len;
 474         else
 475                 new_tail_len = old->tail_len;
 476
 477         size = sizeof(*new) + new_head_len + new_tail_len;
 478
 479         new = kzalloc(size, GFP_KERNEL);
 480         if (!new)
 481                 return -ENOMEM;
 482
 483         /* start filling the new info now */
 484
 485         /* new or old dtim period? */
 486         if (params->dtim_period)
 487                 new->dtim_period = params->dtim_period;
 488         else
 489                 new->dtim_period = old->dtim_period;
 490
 491         /*
 492          * pointers go into the block we allocated,
 493          * memory is | beacon_data | head | tail |
 494          */
 495         new->head = ((u8 *) new) + sizeof(*new);
 496         new->tail = new->head + new_head_len;
 497         new->head_len = new_head_len;
 498         new->tail_len = new_tail_len;
 499
 500         /* copy in head */
 501         if (params->head)
 502                 memcpy(new->head, params->head, new_head_len);
 503         else
 504                 memcpy(new->head, old->head, new_head_len);
 505
 506         /* copy in optional tail */
 507         if (params->tail)
 508                 memcpy(new->tail, params->tail, new_tail_len);
 509         else
 510                 if (old)
 511                         memcpy(new->tail, old->tail, new_tail_len);
 512
 513         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 514
 515         rcu_assign_pointer(sdata->u.ap.beacon, new);
 516
 517         synchronize_rcu();
 518
 519         kfree(old);
 520
 521         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 522                                                 BSS_CHANGED_BEACON);
 523         return 0;
 524 }
 525
 526 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 527                                 struct beacon_parameters *params)
 528 {
 529         struct ieee80211_sub_if_data *sdata;
 530         struct beacon_data *old;
 531
 532         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 533
 534         old = sdata->u.ap.beacon;
 535
 536         if (old)
 537                 return -EALREADY;
 538
 539         return ieee80211_config_beacon(sdata, params);
 540 }
 541
 542 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 543                                 struct beacon_parameters *params)
 544 {
 545         struct ieee80211_sub_if_data *sdata;
 546         struct beacon_data *old;
 547
 548         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 549
 550         old = sdata->u.ap.beacon;
 551
 552         if (!old)
 553                 return -ENOENT;
 554
 555         return ieee80211_config_beacon(sdata, params);
 556 }
 557
 558 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 559 {
 560         struct ieee80211_sub_if_data *sdata;
 561         struct beacon_data *old;
 562
 563         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 564
 565         old = sdata->u.ap.beacon;
 566
 567         if (!old)
 568                 return -ENOENT;
 569
 570         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 571         synchronize_rcu();
 572         kfree(old);
 573
 574         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 575         return 0;
 576 }
 577
 578 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 579 struct iapp_layer2_update {
 580         u8 da[ETH_ALEN];        /* broadcast */
 581         u8 sa[ETH_ALEN];        /* STA addr */
 582         __be16 len;             /* 6 */
 583         u8 dsap;                /* 0 */
 584         u8 ssap;                /* 0 */
 585         u8 control;
 586         u8 xid_info[3];
 587 } __packed;
 588
 589 static void ieee80211_send_layer2_update(struct sta_info *sta)
 590 {
 591         struct iapp_layer2_update *msg;
 592         struct sk_buff *skb;
 593
 594         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 595          * bridge devices */
 596
 597         skb = dev_alloc_skb(sizeof(*msg));
 598         if (!skb)
 599                 return;
 600         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 601
 602         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 603          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 604
 605         memset(msg->da, 0xff, ETH_ALEN);
 606         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 607         msg->len = htons(6);
 608         msg->dsap = 0;
 609         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 610         msg->control = 0xaf;    /* XID response lsb.1111F101.
 611                                  * F=0 (no poll command; unsolicited frame) */
 612         msg->xid_info[0] = 0x81;        /* XID format identifier */
 613         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 614         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 615
 616         skb->dev = sta->sdata->dev;
 617         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 618         memset(skb->cb, 0, sizeof(skb->cb));
 619         netif_rx_ni(skb);
 620 }
 621
 622 static void sta_apply_parameters(struct ieee80211_local *local,
 623                                  struct sta_info *sta,
 624                                  struct station_parameters *params)
 625 {
 626         unsigned long flags;
 627         u32 rates;
 628         int i, j;
 629         struct ieee80211_supported_band *sband;
 630         struct ieee80211_sub_if_data *sdata = sta->sdata;
 631         u32 mask, set;
 632
 633         sband = local->hw.wiphy->bands[local->oper_channel->band];
 634
 635         spin_lock_irqsave(&sta->flaglock, flags);
 636         mask = params->sta_flags_mask;
 637         set = params->sta_flags_set;
 638
 639         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 640                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 641                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 642                         sta->flags |= WLAN_STA_AUTHORIZED;
 643         }
 644
 645         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 646                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 647                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 648                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 649         }
 650
 651         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 652                 sta->flags &= ~WLAN_STA_WME;
 653                 if (set & BIT(NL80211_STA_FLAG_WME))
 654                         sta->flags |= WLAN_STA_WME;
 655         }
 656
 657         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 658                 sta->flags &= ~WLAN_STA_MFP;
 659                 if (set & BIT(NL80211_STA_FLAG_MFP))
 660                         sta->flags |= WLAN_STA_MFP;
 661         }
 662         spin_unlock_irqrestore(&sta->flaglock, flags);
 663
 664         /*
 665          * cfg80211 validates this (1-2007) and allows setting the AID
 666          * only when creating a new station entry
 667          */
 668         if (params->aid)
 669                 sta->sta.aid = params->aid;
 670
 671         /*
 672          * FIXME: updating the following information is racy when this
 673          *        function is called from ieee80211_change_station().
 674          *        However, all this information should be static so
 675          *        maybe we should just reject attemps to change it.
 676          */
 677
 678         if (params->listen_interval >= 0)
 679                 sta->listen_interval = params->listen_interval;
 680
 681         if (params->supported_rates) {
 682                 rates = 0;
 683
 684                 for (i = 0; i < params->supported_rates_len; i++) {
 685                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 686                         for (j = 0; j < sband->n_bitrates; j++) {
 687                                 if (sband->bitrates[j].bitrate == rate)
 688                                         rates |= BIT(j);
 689                         }
 690                 }
 691                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 692         }
 693
 694         if (params->ht_capa)
 695                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 696                                                   params->ht_capa,
 697                                                   &sta->sta.ht_cap);
 698
 699         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 700                 switch (params->plink_action) {
 701                 case PLINK_ACTION_OPEN:
 702                         mesh_plink_open(sta);
 703                         break;
 704                 case PLINK_ACTION_BLOCK:
 705                         mesh_plink_block(sta);
 706                         break;
 707                 }
 708         }
 709 }
 710
 711 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 712                                  u8 *mac, struct station_parameters *params)
 713 {
 714         struct ieee80211_local *local = wiphy_priv(wiphy);
 715         struct sta_info *sta;
 716         struct ieee80211_sub_if_data *sdata;
 717         int err;
 718         int layer2_update;
 719
 720         if (params->vlan) {
 721                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 722
 723                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 724                     sdata->vif.type != NL80211_IFTYPE_AP)
 725                         return -EINVAL;
 726         } else
 727                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 728
 729         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 730                 return -EINVAL;
 731
 732         if (is_multicast_ether_addr(mac))
 733                 return -EINVAL;
 734
 735         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 736         if (!sta)
 737                 return -ENOMEM;
 738
 739         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 740
 741         sta_apply_parameters(local, sta, params);
 742
 743         rate_control_rate_init(sta);
 744
 745         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 746                 sdata->vif.type == NL80211_IFTYPE_AP;
 747
 748         err = sta_info_insert_rcu(sta);
 749         if (err) {
 750                 rcu_read_unlock();
 751                 return err;
 752         }
 753
 754         if (layer2_update)
 755                 ieee80211_send_layer2_update(sta);
 756
 757         rcu_read_unlock();
 758
 759         return 0;
 760 }
 761
 762 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 763                                  u8 *mac)
 764 {
 765         struct ieee80211_local *local = wiphy_priv(wiphy);
 766         struct ieee80211_sub_if_data *sdata;
 767
 768         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 769
 770         if (mac)
 771                 return sta_info_destroy_addr_bss(sdata, mac);
 772
 773         sta_info_flush(local, sdata);
 774         return 0;
 775 }
 776
 777 static int ieee80211_change_station(struct wiphy *wiphy,
 778                                     struct net_device *dev,
 779                                     u8 *mac,
 780                                     struct station_parameters *params)
 781 {
 782         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 783         struct ieee80211_local *local = wiphy_priv(wiphy);
 784         struct sta_info *sta;
 785         struct ieee80211_sub_if_data *vlansdata;
 786
 787         rcu_read_lock();
 788
 789         sta = sta_info_get_bss(sdata, mac);
 790         if (!sta) {
 791                 rcu_read_unlock();
 792                 return -ENOENT;
 793         }
 794
 795         if (params->vlan && params->vlan != sta->sdata->dev) {
 796                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 797
 798                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 799                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 800                         rcu_read_unlock();
 801                         return -EINVAL;
 802                 }
 803
 804                 if (params->vlan->ieee80211_ptr->use_4addr) {
 805                         if (vlansdata->u.vlan.sta) {
 806                                 rcu_read_unlock();
 807                                 return -EBUSY;
 808                         }
 809
 810                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 811                 }
 812
 813                 sta->sdata = vlansdata;
 814                 ieee80211_send_layer2_update(sta);
 815         }
 816
 817         sta_apply_parameters(local, sta, params);
 818
 819         rcu_read_unlock();
 820
 821         return 0;
 822 }
 823
 824 #ifdef CONFIG_MAC80211_MESH
 825 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 826                                  u8 *dst, u8 *next_hop)
 827 {
 828         struct ieee80211_sub_if_data *sdata;
 829         struct mesh_path *mpath;
 830         struct sta_info *sta;
 831         int err;
 832
 833         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 834
 835         rcu_read_lock();
 836         sta = sta_info_get(sdata, next_hop);
 837         if (!sta) {
 838                 rcu_read_unlock();
 839                 return -ENOENT;
 840         }
 841
 842         err = mesh_path_add(dst, sdata);
 843         if (err) {
 844                 rcu_read_unlock();
 845                 return err;
 846         }
 847
 848         mpath = mesh_path_lookup(dst, sdata);
 849         if (!mpath) {
 850                 rcu_read_unlock();
 851                 return -ENXIO;
 852         }
 853         mesh_path_fix_nexthop(mpath, sta);
 854
 855         rcu_read_unlock();
 856         return 0;
 857 }
 858
 859 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 860                                  u8 *dst)
 861 {
 862         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 863
 864         if (dst)
 865                 return mesh_path_del(dst, sdata);
 866
 867         mesh_path_flush(sdata);
 868         return 0;
 869 }
 870
 871 static int ieee80211_change_mpath(struct wiphy *wiphy,
 872                                     struct net_device *dev,
 873                                     u8 *dst, u8 *next_hop)
 874 {
 875         struct ieee80211_sub_if_data *sdata;
 876         struct mesh_path *mpath;
 877         struct sta_info *sta;
 878
 879         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 880
 881         rcu_read_lock();
 882
 883         sta = sta_info_get(sdata, next_hop);
 884         if (!sta) {
 885                 rcu_read_unlock();
 886                 return -ENOENT;
 887         }
 888
 889         mpath = mesh_path_lookup(dst, sdata);
 890         if (!mpath) {
 891                 rcu_read_unlock();
 892                 return -ENOENT;
 893         }
 894
 895         mesh_path_fix_nexthop(mpath, sta);
 896
 897         rcu_read_unlock();
 898         return 0;
 899 }
 900
 901 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 902                             struct mpath_info *pinfo)
 903 {
 904         if (mpath->next_hop)
 905                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 906         else
 907                 memset(next_hop, 0, ETH_ALEN);
 908
 909         pinfo->generation = mesh_paths_generation;
 910
 911         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 912                         MPATH_INFO_SN |
 913                         MPATH_INFO_METRIC |
 914                         MPATH_INFO_EXPTIME |
 915                         MPATH_INFO_DISCOVERY_TIMEOUT |
 916                         MPATH_INFO_DISCOVERY_RETRIES |
 917                         MPATH_INFO_FLAGS;
 918
 919         pinfo->frame_qlen = mpath->frame_queue.qlen;
 920         pinfo->sn = mpath->sn;
 921         pinfo->metric = mpath->metric;
 922         if (time_before(jiffies, mpath->exp_time))
 923                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 924         pinfo->discovery_timeout =
 925                         jiffies_to_msecs(mpath->discovery_timeout);
 926         pinfo->discovery_retries = mpath->discovery_retries;
 927         pinfo->flags = 0;
 928         if (mpath->flags & MESH_PATH_ACTIVE)
 929                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 930         if (mpath->flags & MESH_PATH_RESOLVING)
 931                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 932         if (mpath->flags & MESH_PATH_SN_VALID)
 933                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 934         if (mpath->flags & MESH_PATH_FIXED)
 935                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 936         if (mpath->flags & MESH_PATH_RESOLVING)
 937                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 938
 939         pinfo->flags = mpath->flags;
 940 }
 941
 942 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 943                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 944
 945 {
 946         struct ieee80211_sub_if_data *sdata;
 947         struct mesh_path *mpath;
 948
 949         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 950
 951         rcu_read_lock();
 952         mpath = mesh_path_lookup(dst, sdata);
 953         if (!mpath) {
 954                 rcu_read_unlock();
 955                 return -ENOENT;
 956         }
 957         memcpy(dst, mpath->dst, ETH_ALEN);
 958         mpath_set_pinfo(mpath, next_hop, pinfo);
 959         rcu_read_unlock();
 960         return 0;
 961 }
 962
 963 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 964                                  int idx, u8 *dst, u8 *next_hop,
 965                                  struct mpath_info *pinfo)
 966 {
 967         struct ieee80211_sub_if_data *sdata;
 968         struct mesh_path *mpath;
 969
 970         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 971
 972         rcu_read_lock();
 973         mpath = mesh_path_lookup_by_idx(idx, sdata);
 974         if (!mpath) {
 975                 rcu_read_unlock();
 976                 return -ENOENT;
 977         }
 978         memcpy(dst, mpath->dst, ETH_ALEN);
 979         mpath_set_pinfo(mpath, next_hop, pinfo);
 980         rcu_read_unlock();
 981         return 0;
 982 }
 983
 984 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 985                                 struct net_device *dev,
 986                                 struct mesh_config *conf)
 987 {
 988         struct ieee80211_sub_if_data *sdata;
 989         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 990
 991         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 992         return 0;
 993 }
 994
 995 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
 996 {
 997         return (mask >> (parm-1)) & 0x1;
 998 }
 999
1000 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1001                                 struct net_device *dev,
1002                                 const struct mesh_config *nconf, u32 mask)
1003 {
1004         struct mesh_config *conf;
1005         struct ieee80211_sub_if_data *sdata;
1006         struct ieee80211_if_mesh *ifmsh;
1007
1008         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1009         ifmsh = &sdata->u.mesh;
1010
1011         /* Set the config options which we are interested in setting */
1012         conf = &(sdata->u.mesh.mshcfg);
1013         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1014                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1015         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1016                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1017         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1018                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1019         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1020                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1021         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1022                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1023         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1024                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1025         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1026                 conf->auto_open_plinks = nconf->auto_open_plinks;
1027         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1028                 conf->dot11MeshHWMPmaxPREQretries =
1029                         nconf->dot11MeshHWMPmaxPREQretries;
1030         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1031                 conf->path_refresh_time = nconf->path_refresh_time;
1032         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1033                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1034         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1035                 conf->dot11MeshHWMPactivePathTimeout =
1036                         nconf->dot11MeshHWMPactivePathTimeout;
1037         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1038                 conf->dot11MeshHWMPpreqMinInterval =
1039                         nconf->dot11MeshHWMPpreqMinInterval;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1041                            mask))
1042                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1043                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1044         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1045                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1046                 ieee80211_mesh_root_setup(ifmsh);
1047         }
1048         return 0;
1049 }
1050
1051 #endif
1052
1053 static int ieee80211_change_bss(struct wiphy *wiphy,
1054                                 struct net_device *dev,
1055                                 struct bss_parameters *params)
1056 {
1057         struct ieee80211_sub_if_data *sdata;
1058         u32 changed = 0;
1059
1060         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1061
1062         if (params->use_cts_prot >= 0) {
1063                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1064                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1065         }
1066         if (params->use_short_preamble >= 0) {
1067                 sdata->vif.bss_conf.use_short_preamble =
1068                         params->use_short_preamble;
1069                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1070         }
1071
1072         if (!sdata->vif.bss_conf.use_short_slot &&
1073             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1074                 sdata->vif.bss_conf.use_short_slot = true;
1075                 changed |= BSS_CHANGED_ERP_SLOT;
1076         }
1077
1078         if (params->use_short_slot_time >= 0) {
1079                 sdata->vif.bss_conf.use_short_slot =
1080                         params->use_short_slot_time;
1081                 changed |= BSS_CHANGED_ERP_SLOT;
1082         }
1083
1084         if (params->basic_rates) {
1085                 int i, j;
1086                 u32 rates = 0;
1087                 struct ieee80211_local *local = wiphy_priv(wiphy);
1088                 struct ieee80211_supported_band *sband =
1089                         wiphy->bands[local->oper_channel->band];
1090
1091                 for (i = 0; i < params->basic_rates_len; i++) {
1092                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1093                         for (j = 0; j < sband->n_bitrates; j++) {
1094                                 if (sband->bitrates[j].bitrate == rate)
1095                                         rates |= BIT(j);
1096                         }
1097                 }
1098                 sdata->vif.bss_conf.basic_rates = rates;
1099                 changed |= BSS_CHANGED_BASIC_RATES;
1100         }
1101
1102         if (params->ap_isolate >= 0) {
1103                 if (params->ap_isolate)
1104                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1105                 else
1106                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1107         }
1108
1109         ieee80211_bss_info_change_notify(sdata, changed);
1110
1111         return 0;
1112 }
1113
1114 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1115                                     struct ieee80211_txq_params *params)
1116 {
1117         struct ieee80211_local *local = wiphy_priv(wiphy);
1118         struct ieee80211_tx_queue_params p;
1119
1120         if (!local->ops->conf_tx)
1121                 return -EOPNOTSUPP;
1122
1123         memset(&p, 0, sizeof(p));
1124         p.aifs = params->aifs;
1125         p.cw_max = params->cwmax;
1126         p.cw_min = params->cwmin;
1127         p.txop = params->txop;
1128
1129         /*
1130          * Setting tx queue params disables u-apsd because it's only
1131          * called in master mode.
1132          */
1133         p.uapsd = false;
1134
1135         if (drv_conf_tx(local, params->queue, &p)) {
1136                 wiphy_debug(local->hw.wiphy,
1137                             "failed to set TX queue parameters for queue %d\n",
1138                             params->queue);
1139                 return -EINVAL;
1140         }
1141
1142         return 0;
1143 }
1144
1145 static int ieee80211_set_channel(struct wiphy *wiphy,
1146                                  struct net_device *netdev,
1147                                  struct ieee80211_channel *chan,
1148                                  enum nl80211_channel_type channel_type)
1149 {
1150         struct ieee80211_local *local = wiphy_priv(wiphy);
1151         struct ieee80211_sub_if_data *sdata = NULL;
1152
1153         if (netdev)
1154                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1155
1156         switch (ieee80211_get_channel_mode(local, NULL)) {
1157         case CHAN_MODE_HOPPING:
1158                 return -EBUSY;
1159         case CHAN_MODE_FIXED:
1160                 if (local->oper_channel != chan)
1161                         return -EBUSY;
1162                 if (!sdata && local->_oper_channel_type == channel_type)
1163                         return 0;
1164                 break;
1165         case CHAN_MODE_UNDEFINED:
1166                 break;
1167         }
1168
1169         local->oper_channel = chan;
1170
1171         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1172                 return -EBUSY;
1173
1174         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1175         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1176                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1177
1178         return 0;
1179 }
1180
1181 #ifdef CONFIG_PM
1182 static int ieee80211_suspend(struct wiphy *wiphy)
1183 {
1184         return __ieee80211_suspend(wiphy_priv(wiphy));
1185 }
1186
1187 static int ieee80211_resume(struct wiphy *wiphy)
1188 {
1189         return __ieee80211_resume(wiphy_priv(wiphy));
1190 }
1191 #else
1192 #define ieee80211_suspend NULL
1193 #define ieee80211_resume NULL
1194 #endif
1195
1196 static int ieee80211_scan(struct wiphy *wiphy,
1197                           struct net_device *dev,
1198                           struct cfg80211_scan_request *req)
1199 {
1200         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1201
1202         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1203         case NL80211_IFTYPE_STATION:
1204         case NL80211_IFTYPE_ADHOC:
1205         case NL80211_IFTYPE_MESH_POINT:
1206         case NL80211_IFTYPE_P2P_CLIENT:
1207                 break;
1208         case NL80211_IFTYPE_P2P_GO:
1209                 if (sdata->local->ops->hw_scan)
1210                         break;
1211                 /* FIXME: implement NoA while scanning in software */
1212                 return -EOPNOTSUPP;
1213         case NL80211_IFTYPE_AP:
1214                 if (sdata->u.ap.beacon)
1215                         return -EOPNOTSUPP;
1216                 break;
1217         default:
1218                 return -EOPNOTSUPP;
1219         }
1220
1221         return ieee80211_request_scan(sdata, req);
1222 }
1223
1224 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1225                           struct cfg80211_auth_request *req)
1226 {
1227         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1228 }
1229
1230 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1231                            struct cfg80211_assoc_request *req)
1232 {
1233         struct ieee80211_local *local = wiphy_priv(wiphy);
1234         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1235
1236         switch (ieee80211_get_channel_mode(local, sdata)) {
1237         case CHAN_MODE_HOPPING:
1238                 return -EBUSY;
1239         case CHAN_MODE_FIXED:
1240                 if (local->oper_channel == req->bss->channel)
1241                         break;
1242                 return -EBUSY;
1243         case CHAN_MODE_UNDEFINED:
1244                 break;
1245         }
1246
1247         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1248 }
1249
1250 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1251                             struct cfg80211_deauth_request *req,
1252                             void *cookie)
1253 {
1254         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1255                                     req, cookie);
1256 }
1257
1258 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1259                               struct cfg80211_disassoc_request *req,
1260                               void *cookie)
1261 {
1262         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1263                                       req, cookie);
1264 }
1265
1266 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1267                                struct cfg80211_ibss_params *params)
1268 {
1269         struct ieee80211_local *local = wiphy_priv(wiphy);
1270         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1271
1272         switch (ieee80211_get_channel_mode(local, sdata)) {
1273         case CHAN_MODE_HOPPING:
1274                 return -EBUSY;
1275         case CHAN_MODE_FIXED:
1276                 if (!params->channel_fixed)
1277                         return -EBUSY;
1278                 if (local->oper_channel == params->channel)
1279                         break;
1280                 return -EBUSY;
1281         case CHAN_MODE_UNDEFINED:
1282                 break;
1283         }
1284
1285         return ieee80211_ibss_join(sdata, params);
1286 }
1287
1288 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1289 {
1290         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1291
1292         return ieee80211_ibss_leave(sdata);
1293 }
1294
1295 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1296 {
1297         struct ieee80211_local *local = wiphy_priv(wiphy);
1298         int err;
1299
1300         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1301                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1302
1303                 if (err)
1304                         return err;
1305         }
1306
1307         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1308                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1309
1310                 if (err)
1311                         return err;
1312         }
1313
1314         if (changed & WIPHY_PARAM_RETRY_SHORT)
1315                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1316         if (changed & WIPHY_PARAM_RETRY_LONG)
1317                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1318         if (changed &
1319             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1320                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1321
1322         return 0;
1323 }
1324
1325 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1326                                   enum nl80211_tx_power_setting type, int mbm)
1327 {
1328         struct ieee80211_local *local = wiphy_priv(wiphy);
1329         struct ieee80211_channel *chan = local->hw.conf.channel;
1330         u32 changes = 0;
1331
1332         switch (type) {
1333         case NL80211_TX_POWER_AUTOMATIC:
1334                 local->user_power_level = -1;
1335                 break;
1336         case NL80211_TX_POWER_LIMITED:
1337                 if (mbm < 0 || (mbm % 100))
1338                         return -EOPNOTSUPP;
1339                 local->user_power_level = MBM_TO_DBM(mbm);
1340                 break;
1341         case NL80211_TX_POWER_FIXED:
1342                 if (mbm < 0 || (mbm % 100))
1343                         return -EOPNOTSUPP;
1344                 /* TODO: move to cfg80211 when it knows the channel */
1345                 if (MBM_TO_DBM(mbm) > chan->max_power)
1346                         return -EINVAL;
1347                 local->user_power_level = MBM_TO_DBM(mbm);
1348                 break;
1349         }
1350
1351         ieee80211_hw_config(local, changes);
1352
1353         return 0;
1354 }
1355
1356 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1357 {
1358         struct ieee80211_local *local = wiphy_priv(wiphy);
1359
1360         *dbm = local->hw.conf.power_level;
1361
1362         return 0;
1363 }
1364
1365 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1366                                   const u8 *addr)
1367 {
1368         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1369
1370         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1371
1372         return 0;
1373 }
1374
1375 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1376 {
1377         struct ieee80211_local *local = wiphy_priv(wiphy);
1378
1379         drv_rfkill_poll(local);
1380 }
1381
1382 #ifdef CONFIG_NL80211_TESTMODE
1383 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1384 {
1385         struct ieee80211_local *local = wiphy_priv(wiphy);
1386
1387         if (!local->ops->testmode_cmd)
1388                 return -EOPNOTSUPP;
1389
1390         return local->ops->testmode_cmd(&local->hw, data, len);
1391 }
1392 #endif
1393
1394 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1395                              enum ieee80211_smps_mode smps_mode)
1396 {
1397         const u8 *ap;
1398         enum ieee80211_smps_mode old_req;
1399         int err;
1400
1401         old_req = sdata->u.mgd.req_smps;
1402         sdata->u.mgd.req_smps = smps_mode;
1403
1404         if (old_req == smps_mode &&
1405             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1406                 return 0;
1407
1408         /*
1409          * If not associated, or current association is not an HT
1410          * association, there's no need to send an action frame.
1411          */
1412         if (!sdata->u.mgd.associated ||
1413             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1414                 mutex_lock(&sdata->local->iflist_mtx);
1415                 ieee80211_recalc_smps(sdata->local);
1416                 mutex_unlock(&sdata->local->iflist_mtx);
1417                 return 0;
1418         }
1419
1420         ap = sdata->u.mgd.associated->bssid;
1421
1422         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1423                 if (sdata->u.mgd.powersave)
1424                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1425                 else
1426                         smps_mode = IEEE80211_SMPS_OFF;
1427         }
1428
1429         /* send SM PS frame to AP */
1430         err = ieee80211_send_smps_action(sdata, smps_mode,
1431                                          ap, ap);
1432         if (err)
1433                 sdata->u.mgd.req_smps = old_req;
1434
1435         return err;
1436 }
1437
1438 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1439                                     bool enabled, int timeout)
1440 {
1441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1442         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1443
1444         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1445                 return -EOPNOTSUPP;
1446
1447         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1448                 return -EOPNOTSUPP;
1449
1450         if (enabled == sdata->u.mgd.powersave &&
1451             timeout == local->dynamic_ps_forced_timeout)
1452                 return 0;
1453
1454         sdata->u.mgd.powersave = enabled;
1455         local->dynamic_ps_forced_timeout = timeout;
1456
1457         /* no change, but if automatic follow powersave */
1458         mutex_lock(&sdata->u.mgd.mtx);
1459         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1460         mutex_unlock(&sdata->u.mgd.mtx);
1461
1462         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1463                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1464
1465         ieee80211_recalc_ps(local, -1);
1466
1467         return 0;
1468 }
1469
1470 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1471                                          struct net_device *dev,
1472                                          s32 rssi_thold, u32 rssi_hyst)
1473 {
1474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1476         struct ieee80211_vif *vif = &sdata->vif;
1477         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1478
1479         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1480             rssi_hyst == bss_conf->cqm_rssi_hyst)
1481                 return 0;
1482
1483         bss_conf->cqm_rssi_thold = rssi_thold;
1484         bss_conf->cqm_rssi_hyst = rssi_hyst;
1485
1486         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1487                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1488                         return -EOPNOTSUPP;
1489                 return 0;
1490         }
1491
1492         /* tell the driver upon association, unless already associated */
1493         if (sdata->u.mgd.associated)
1494                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1495
1496         return 0;
1497 }
1498
1499 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1500                                       struct net_device *dev,
1501                                       const u8 *addr,
1502                                       const struct cfg80211_bitrate_mask *mask)
1503 {
1504         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1505         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1506         int i;
1507
1508         /*
1509          * This _could_ be supported by providing a hook for
1510          * drivers for this function, but at this point it
1511          * doesn't seem worth bothering.
1512          */
1513         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1514                 return -EOPNOTSUPP;
1515
1516
1517         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1518                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1519
1520         return 0;
1521 }
1522
1523 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1524                                        struct net_device *dev,
1525                                        struct ieee80211_channel *chan,
1526                                        enum nl80211_channel_type channel_type,
1527                                        unsigned int duration,
1528                                        u64 *cookie)
1529 {
1530         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1531
1532         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1533                                               duration, cookie);
1534 }
1535
1536 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1537                                               struct net_device *dev,
1538                                               u64 cookie)
1539 {
1540         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1543 }
1544
1545 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1546                              struct ieee80211_channel *chan,
1547                              enum nl80211_channel_type channel_type,
1548                              bool channel_type_valid,
1549                              const u8 *buf, size_t len, u64 *cookie)
1550 {
1551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1552         struct ieee80211_local *local = sdata->local;
1553         struct sk_buff *skb;
1554         struct sta_info *sta;
1555         const struct ieee80211_mgmt *mgmt = (void *)buf;
1556         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1557                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1558
1559         /* Check that we are on the requested channel for transmission */
1560         if (chan != local->tmp_channel &&
1561             chan != local->oper_channel)
1562                 return -EBUSY;
1563         if (channel_type_valid &&
1564             (channel_type != local->tmp_channel_type &&
1565              channel_type != local->_oper_channel_type))
1566                 return -EBUSY;
1567
1568         switch (sdata->vif.type) {
1569         case NL80211_IFTYPE_ADHOC:
1570         case NL80211_IFTYPE_AP:
1571         case NL80211_IFTYPE_AP_VLAN:
1572         case NL80211_IFTYPE_P2P_GO:
1573                 if (!ieee80211_is_action(mgmt->frame_control) ||
1574                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1575                         break;
1576                 rcu_read_lock();
1577                 sta = sta_info_get(sdata, mgmt->da);
1578                 rcu_read_unlock();
1579                 if (!sta)
1580                         return -ENOLINK;
1581                 break;
1582         case NL80211_IFTYPE_STATION:
1583         case NL80211_IFTYPE_P2P_CLIENT:
1584                 break;
1585         default:
1586                 return -EOPNOTSUPP;
1587         }
1588
1589         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1590         if (!skb)
1591                 return -ENOMEM;
1592         skb_reserve(skb, local->hw.extra_tx_headroom);
1593
1594         memcpy(skb_put(skb, len), buf, len);
1595
1596         IEEE80211_SKB_CB(skb)->flags = flags;
1597
1598         skb->dev = sdata->dev;
1599         ieee80211_tx_skb(sdata, skb);
1600
1601         *cookie = (unsigned long) skb;
1602         return 0;
1603 }
1604
1605 struct cfg80211_ops mac80211_config_ops = {
1606         .add_virtual_intf = ieee80211_add_iface,
1607         .del_virtual_intf = ieee80211_del_iface,
1608         .change_virtual_intf = ieee80211_change_iface,
1609         .add_key = ieee80211_add_key,
1610         .del_key = ieee80211_del_key,
1611         .get_key = ieee80211_get_key,
1612         .set_default_key = ieee80211_config_default_key,
1613         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1614         .add_beacon = ieee80211_add_beacon,
1615         .set_beacon = ieee80211_set_beacon,
1616         .del_beacon = ieee80211_del_beacon,
1617         .add_station = ieee80211_add_station,
1618         .del_station = ieee80211_del_station,
1619         .change_station = ieee80211_change_station,
1620         .get_station = ieee80211_get_station,
1621         .dump_station = ieee80211_dump_station,
1622         .dump_survey = ieee80211_dump_survey,
1623 #ifdef CONFIG_MAC80211_MESH
1624         .add_mpath = ieee80211_add_mpath,
1625         .del_mpath = ieee80211_del_mpath,
1626         .change_mpath = ieee80211_change_mpath,
1627         .get_mpath = ieee80211_get_mpath,
1628         .dump_mpath = ieee80211_dump_mpath,
1629         .set_mesh_params = ieee80211_set_mesh_params,
1630         .get_mesh_params = ieee80211_get_mesh_params,
1631 #endif
1632         .change_bss = ieee80211_change_bss,
1633         .set_txq_params = ieee80211_set_txq_params,
1634         .set_channel = ieee80211_set_channel,
1635         .suspend = ieee80211_suspend,
1636         .resume = ieee80211_resume,
1637         .scan = ieee80211_scan,
1638         .auth = ieee80211_auth,
1639         .assoc = ieee80211_assoc,
1640         .deauth = ieee80211_deauth,
1641         .disassoc = ieee80211_disassoc,
1642         .join_ibss = ieee80211_join_ibss,
1643         .leave_ibss = ieee80211_leave_ibss,
1644         .set_wiphy_params = ieee80211_set_wiphy_params,
1645         .set_tx_power = ieee80211_set_tx_power,
1646         .get_tx_power = ieee80211_get_tx_power,
1647         .set_wds_peer = ieee80211_set_wds_peer,
1648         .rfkill_poll = ieee80211_rfkill_poll,
1649         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1650         .set_power_mgmt = ieee80211_set_power_mgmt,
1651         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1652         .remain_on_channel = ieee80211_remain_on_channel,
1653         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1654         .mgmt_tx = ieee80211_mgmt_tx,
1655         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1656 };