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 bool nl80211_type_check(enum nl80211_iftype type)
  23 {
  24         switch (type) {
  25         case NL80211_IFTYPE_ADHOC:
  26         case NL80211_IFTYPE_STATION:
  27         case NL80211_IFTYPE_MONITOR:
  28 #ifdef CONFIG_MAC80211_MESH
  29         case NL80211_IFTYPE_MESH_POINT:
  30 #endif
  31         case NL80211_IFTYPE_AP:
  32         case NL80211_IFTYPE_AP_VLAN:
  33         case NL80211_IFTYPE_WDS:
  34                 return true;
  35         default:
  36                 return false;
  37         }
  38 }
  39
  40 static bool nl80211_params_check(enum nl80211_iftype type,
  41                                  struct vif_params *params)
  42 {
  43         if (!nl80211_type_check(type))
  44                 return false;
  45
  46         return true;
  47 }
  48
  49 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  50                                enum nl80211_iftype type, u32 *flags,
  51                                struct vif_params *params)
  52 {
  53         struct ieee80211_local *local = wiphy_priv(wiphy);
  54         struct net_device *dev;
  55         struct ieee80211_sub_if_data *sdata;
  56         int err;
  57
  58         if (!nl80211_params_check(type, params))
  59                 return -EINVAL;
  60
  61         err = ieee80211_if_add(local, name, &dev, type, params);
  62         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  63                 return err;
  64
  65         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  66         sdata->u.mntr_flags = *flags;
  67         return 0;
  68 }
  69
  70 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  71 {
  72         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  73
  74         return 0;
  75 }
  76
  77 static int ieee80211_change_iface(struct wiphy *wiphy,
  78                                   struct net_device *dev,
  79                                   enum nl80211_iftype type, u32 *flags,
  80                                   struct vif_params *params)
  81 {
  82         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  83         int ret;
  84
  85         if (ieee80211_sdata_running(sdata))
  86                 return -EBUSY;
  87
  88         if (!nl80211_params_check(type, params))
  89                 return -EINVAL;
  90
  91         ret = ieee80211_if_change_type(sdata, type);
  92         if (ret)
  93                 return ret;
  94
  95         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  96                 ieee80211_sdata_set_mesh_id(sdata,
  97                                             params->mesh_id_len,
  98                                             params->mesh_id);
  99
 100         if (type == NL80211_IFTYPE_AP_VLAN &&
 101             params && params->use_4addr == 0)
 102                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
 103         else if (type == NL80211_IFTYPE_STATION &&
 104                  params && params->use_4addr >= 0)
 105                 sdata->u.mgd.use_4addr = params->use_4addr;
 106
 107         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags)
 108                 sdata->u.mntr_flags = *flags;
 109
 110         return 0;
 111 }
 112
 113 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 114                              u8 key_idx, const u8 *mac_addr,
 115                              struct key_params *params)
 116 {
 117         struct ieee80211_sub_if_data *sdata;
 118         struct sta_info *sta = NULL;
 119         enum ieee80211_key_alg alg;
 120         struct ieee80211_key *key;
 121         int err;
 122
 123         if (!netif_running(dev))
 124                 return -ENETDOWN;
 125
 126         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 127
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_WEP104:
 131                 alg = ALG_WEP;
 132                 break;
 133         case WLAN_CIPHER_SUITE_TKIP:
 134                 alg = ALG_TKIP;
 135                 break;
 136         case WLAN_CIPHER_SUITE_CCMP:
 137                 alg = ALG_CCMP;
 138                 break;
 139         case WLAN_CIPHER_SUITE_AES_CMAC:
 140                 alg = ALG_AES_CMAC;
 141                 break;
 142         default:
 143                 return -EINVAL;
 144         }
 145
 146         /* reject WEP and TKIP keys if WEP failed to initialize */
 147         if ((alg == ALG_WEP || alg == ALG_TKIP) &&
 148             IS_ERR(sdata->local->wep_tx_tfm))
 149                 return -EINVAL;
 150
 151         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key,
 152                                   params->seq_len, params->seq);
 153         if (!key)
 154                 return -ENOMEM;
 155
 156         mutex_lock(&sdata->local->sta_mtx);
 157
 158         if (mac_addr) {
 159                 sta = sta_info_get_bss(sdata, mac_addr);
 160                 if (!sta) {
 161                         ieee80211_key_free(sdata->local, key);
 162                         err = -ENOENT;
 163                         goto out_unlock;
 164                 }
 165         }
 166
 167         ieee80211_key_link(key, sdata, sta);
 168
 169         err = 0;
 170  out_unlock:
 171         mutex_unlock(&sdata->local->sta_mtx);
 172
 173         return err;
 174 }
 175
 176 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 177                              u8 key_idx, const u8 *mac_addr)
 178 {
 179         struct ieee80211_sub_if_data *sdata;
 180         struct sta_info *sta;
 181         int ret;
 182
 183         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 184
 185         mutex_lock(&sdata->local->sta_mtx);
 186
 187         if (mac_addr) {
 188                 ret = -ENOENT;
 189
 190                 sta = sta_info_get_bss(sdata, mac_addr);
 191                 if (!sta)
 192                         goto out_unlock;
 193
 194                 if (sta->key) {
 195                         ieee80211_key_free(sdata->local, sta->key);
 196                         WARN_ON(sta->key);
 197                         ret = 0;
 198                 }
 199
 200                 goto out_unlock;
 201         }
 202
 203         if (!sdata->keys[key_idx]) {
 204                 ret = -ENOENT;
 205                 goto out_unlock;
 206         }
 207
 208         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 209         WARN_ON(sdata->keys[key_idx]);
 210
 211         ret = 0;
 212  out_unlock:
 213         mutex_unlock(&sdata->local->sta_mtx);
 214
 215         return ret;
 216 }
 217
 218 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 219                              u8 key_idx, const u8 *mac_addr, void *cookie,
 220                              void (*callback)(void *cookie,
 221                                               struct key_params *params))
 222 {
 223         struct ieee80211_sub_if_data *sdata;
 224         struct sta_info *sta = NULL;
 225         u8 seq[6] = {0};
 226         struct key_params params;
 227         struct ieee80211_key *key;
 228         u32 iv32;
 229         u16 iv16;
 230         int err = -ENOENT;
 231
 232         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 233
 234         rcu_read_lock();
 235
 236         if (mac_addr) {
 237                 sta = sta_info_get_bss(sdata, mac_addr);
 238                 if (!sta)
 239                         goto out;
 240
 241                 key = sta->key;
 242         } else
 243                 key = sdata->keys[key_idx];
 244
 245         if (!key)
 246                 goto out;
 247
 248         memset(&params, 0, sizeof(params));
 249
 250         switch (key->conf.alg) {
 251         case ALG_TKIP:
 252                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 253
 254                 iv32 = key->u.tkip.tx.iv32;
 255                 iv16 = key->u.tkip.tx.iv16;
 256
 257                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 258                         drv_get_tkip_seq(sdata->local,
 259                                          key->conf.hw_key_idx,
 260                                          &iv32, &iv16);
 261
 262                 seq[0] = iv16 & 0xff;
 263                 seq[1] = (iv16 >> 8) & 0xff;
 264                 seq[2] = iv32 & 0xff;
 265                 seq[3] = (iv32 >> 8) & 0xff;
 266                 seq[4] = (iv32 >> 16) & 0xff;
 267                 seq[5] = (iv32 >> 24) & 0xff;
 268                 params.seq = seq;
 269                 params.seq_len = 6;
 270                 break;
 271         case ALG_CCMP:
 272                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 273                 seq[0] = key->u.ccmp.tx_pn[5];
 274                 seq[1] = key->u.ccmp.tx_pn[4];
 275                 seq[2] = key->u.ccmp.tx_pn[3];
 276                 seq[3] = key->u.ccmp.tx_pn[2];
 277                 seq[4] = key->u.ccmp.tx_pn[1];
 278                 seq[5] = key->u.ccmp.tx_pn[0];
 279                 params.seq = seq;
 280                 params.seq_len = 6;
 281                 break;
 282         case ALG_WEP:
 283                 if (key->conf.keylen == 5)
 284                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 285                 else
 286                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 287                 break;
 288         case ALG_AES_CMAC:
 289                 params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 290                 seq[0] = key->u.aes_cmac.tx_pn[5];
 291                 seq[1] = key->u.aes_cmac.tx_pn[4];
 292                 seq[2] = key->u.aes_cmac.tx_pn[3];
 293                 seq[3] = key->u.aes_cmac.tx_pn[2];
 294                 seq[4] = key->u.aes_cmac.tx_pn[1];
 295                 seq[5] = key->u.aes_cmac.tx_pn[0];
 296                 params.seq = seq;
 297                 params.seq_len = 6;
 298                 break;
 299         }
 300
 301         params.key = key->conf.key;
 302         params.key_len = key->conf.keylen;
 303
 304         callback(cookie, &params);
 305         err = 0;
 306
 307  out:
 308         rcu_read_unlock();
 309         return err;
 310 }
 311
 312 static int ieee80211_config_default_key(struct wiphy *wiphy,
 313                                         struct net_device *dev,
 314                                         u8 key_idx)
 315 {
 316         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317
 318         ieee80211_set_default_key(sdata, key_idx);
 319
 320         return 0;
 321 }
 322
 323 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 324                                              struct net_device *dev,
 325                                              u8 key_idx)
 326 {
 327         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 328
 329         ieee80211_set_default_mgmt_key(sdata, key_idx);
 330
 331         return 0;
 332 }
 333
 334 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 335 {
 336         struct ieee80211_sub_if_data *sdata = sta->sdata;
 337
 338         sinfo->generation = sdata->local->sta_generation;
 339
 340         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 341                         STATION_INFO_RX_BYTES |
 342                         STATION_INFO_TX_BYTES |
 343                         STATION_INFO_RX_PACKETS |
 344                         STATION_INFO_TX_PACKETS |
 345                         STATION_INFO_TX_BITRATE;
 346
 347         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 348         sinfo->rx_bytes = sta->rx_bytes;
 349         sinfo->tx_bytes = sta->tx_bytes;
 350         sinfo->rx_packets = sta->rx_packets;
 351         sinfo->tx_packets = sta->tx_packets;
 352
 353         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 354             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 355                 sinfo->filled |= STATION_INFO_SIGNAL;
 356                 sinfo->signal = (s8)sta->last_signal;
 357         }
 358
 359         sinfo->txrate.flags = 0;
 360         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 361                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 362         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 363                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 364         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 365                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 366
 367         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 368                 struct ieee80211_supported_band *sband;
 369                 sband = sta->local->hw.wiphy->bands[
 370                                 sta->local->hw.conf.channel->band];
 371                 sinfo->txrate.legacy =
 372                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 373         } else
 374                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 375
 376         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 377 #ifdef CONFIG_MAC80211_MESH
 378                 sinfo->filled |= STATION_INFO_LLID |
 379                                  STATION_INFO_PLID |
 380                                  STATION_INFO_PLINK_STATE;
 381
 382                 sinfo->llid = le16_to_cpu(sta->llid);
 383                 sinfo->plid = le16_to_cpu(sta->plid);
 384                 sinfo->plink_state = sta->plink_state;
 385 #endif
 386         }
 387 }
 388
 389
 390 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 391                                  int idx, u8 *mac, struct station_info *sinfo)
 392 {
 393         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 394         struct sta_info *sta;
 395         int ret = -ENOENT;
 396
 397         rcu_read_lock();
 398
 399         sta = sta_info_get_by_idx(sdata, idx);
 400         if (sta) {
 401                 ret = 0;
 402                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 403                 sta_set_sinfo(sta, sinfo);
 404         }
 405
 406         rcu_read_unlock();
 407
 408         return ret;
 409 }
 410
 411 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 412                                  int idx, struct survey_info *survey)
 413 {
 414         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 415
 416         return drv_get_survey(local, idx, survey);
 417 }
 418
 419 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 420                                  u8 *mac, struct station_info *sinfo)
 421 {
 422         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 423         struct sta_info *sta;
 424         int ret = -ENOENT;
 425
 426         rcu_read_lock();
 427
 428         sta = sta_info_get_bss(sdata, mac);
 429         if (sta) {
 430                 ret = 0;
 431                 sta_set_sinfo(sta, sinfo);
 432         }
 433
 434         rcu_read_unlock();
 435
 436         return ret;
 437 }
 438
 439 /*
 440  * This handles both adding a beacon and setting new beacon info
 441  */
 442 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 443                                    struct beacon_parameters *params)
 444 {
 445         struct beacon_data *new, *old;
 446         int new_head_len, new_tail_len;
 447         int size;
 448         int err = -EINVAL;
 449
 450         old = sdata->u.ap.beacon;
 451
 452         /* head must not be zero-length */
 453         if (params->head && !params->head_len)
 454                 return -EINVAL;
 455
 456         /*
 457          * This is a kludge. beacon interval should really be part
 458          * of the beacon information.
 459          */
 460         if (params->interval &&
 461             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 462                 sdata->vif.bss_conf.beacon_int = params->interval;
 463                 ieee80211_bss_info_change_notify(sdata,
 464                                                  BSS_CHANGED_BEACON_INT);
 465         }
 466
 467         /* Need to have a beacon head if we don't have one yet */
 468         if (!params->head && !old)
 469                 return err;
 470
 471         /* sorry, no way to start beaconing without dtim period */
 472         if (!params->dtim_period && !old)
 473                 return err;
 474
 475         /* new or old head? */
 476         if (params->head)
 477                 new_head_len = params->head_len;
 478         else
 479                 new_head_len = old->head_len;
 480
 481         /* new or old tail? */
 482         if (params->tail || !old)
 483                 /* params->tail_len will be zero for !params->tail */
 484                 new_tail_len = params->tail_len;
 485         else
 486                 new_tail_len = old->tail_len;
 487
 488         size = sizeof(*new) + new_head_len + new_tail_len;
 489
 490         new = kzalloc(size, GFP_KERNEL);
 491         if (!new)
 492                 return -ENOMEM;
 493
 494         /* start filling the new info now */
 495
 496         /* new or old dtim period? */
 497         if (params->dtim_period)
 498                 new->dtim_period = params->dtim_period;
 499         else
 500                 new->dtim_period = old->dtim_period;
 501
 502         /*
 503          * pointers go into the block we allocated,
 504          * memory is | beacon_data | head | tail |
 505          */
 506         new->head = ((u8 *) new) + sizeof(*new);
 507         new->tail = new->head + new_head_len;
 508         new->head_len = new_head_len;
 509         new->tail_len = new_tail_len;
 510
 511         /* copy in head */
 512         if (params->head)
 513                 memcpy(new->head, params->head, new_head_len);
 514         else
 515                 memcpy(new->head, old->head, new_head_len);
 516
 517         /* copy in optional tail */
 518         if (params->tail)
 519                 memcpy(new->tail, params->tail, new_tail_len);
 520         else
 521                 if (old)
 522                         memcpy(new->tail, old->tail, new_tail_len);
 523
 524         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 525
 526         rcu_assign_pointer(sdata->u.ap.beacon, new);
 527
 528         synchronize_rcu();
 529
 530         kfree(old);
 531
 532         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 533                                                 BSS_CHANGED_BEACON);
 534         return 0;
 535 }
 536
 537 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 538                                 struct beacon_parameters *params)
 539 {
 540         struct ieee80211_sub_if_data *sdata;
 541         struct beacon_data *old;
 542
 543         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 544
 545         old = sdata->u.ap.beacon;
 546
 547         if (old)
 548                 return -EALREADY;
 549
 550         return ieee80211_config_beacon(sdata, params);
 551 }
 552
 553 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 554                                 struct beacon_parameters *params)
 555 {
 556         struct ieee80211_sub_if_data *sdata;
 557         struct beacon_data *old;
 558
 559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 560
 561         old = sdata->u.ap.beacon;
 562
 563         if (!old)
 564                 return -ENOENT;
 565
 566         return ieee80211_config_beacon(sdata, params);
 567 }
 568
 569 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 570 {
 571         struct ieee80211_sub_if_data *sdata;
 572         struct beacon_data *old;
 573
 574         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 575
 576         old = sdata->u.ap.beacon;
 577
 578         if (!old)
 579                 return -ENOENT;
 580
 581         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 582         synchronize_rcu();
 583         kfree(old);
 584
 585         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 586         return 0;
 587 }
 588
 589 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 590 struct iapp_layer2_update {
 591         u8 da[ETH_ALEN];        /* broadcast */
 592         u8 sa[ETH_ALEN];        /* STA addr */
 593         __be16 len;             /* 6 */
 594         u8 dsap;                /* 0 */
 595         u8 ssap;                /* 0 */
 596         u8 control;
 597         u8 xid_info[3];
 598 } __packed;
 599
 600 static void ieee80211_send_layer2_update(struct sta_info *sta)
 601 {
 602         struct iapp_layer2_update *msg;
 603         struct sk_buff *skb;
 604
 605         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 606          * bridge devices */
 607
 608         skb = dev_alloc_skb(sizeof(*msg));
 609         if (!skb)
 610                 return;
 611         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 612
 613         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 614          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 615
 616         memset(msg->da, 0xff, ETH_ALEN);
 617         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 618         msg->len = htons(6);
 619         msg->dsap = 0;
 620         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 621         msg->control = 0xaf;    /* XID response lsb.1111F101.
 622                                  * F=0 (no poll command; unsolicited frame) */
 623         msg->xid_info[0] = 0x81;        /* XID format identifier */
 624         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 625         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 626
 627         skb->dev = sta->sdata->dev;
 628         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 629         memset(skb->cb, 0, sizeof(skb->cb));
 630         netif_rx_ni(skb);
 631 }
 632
 633 static void sta_apply_parameters(struct ieee80211_local *local,
 634                                  struct sta_info *sta,
 635                                  struct station_parameters *params)
 636 {
 637         u32 rates;
 638         int i, j;
 639         struct ieee80211_supported_band *sband;
 640         struct ieee80211_sub_if_data *sdata = sta->sdata;
 641         u32 mask, set;
 642
 643         sband = local->hw.wiphy->bands[local->oper_channel->band];
 644
 645         spin_lock_bh(&sta->lock);
 646         mask = params->sta_flags_mask;
 647         set = params->sta_flags_set;
 648
 649         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 650                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 651                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 652                         sta->flags |= WLAN_STA_AUTHORIZED;
 653         }
 654
 655         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 656                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 657                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 658                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 659         }
 660
 661         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 662                 sta->flags &= ~WLAN_STA_WME;
 663                 if (set & BIT(NL80211_STA_FLAG_WME))
 664                         sta->flags |= WLAN_STA_WME;
 665         }
 666
 667         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 668                 sta->flags &= ~WLAN_STA_MFP;
 669                 if (set & BIT(NL80211_STA_FLAG_MFP))
 670                         sta->flags |= WLAN_STA_MFP;
 671         }
 672         spin_unlock_bh(&sta->lock);
 673
 674         /*
 675          * cfg80211 validates this (1-2007) and allows setting the AID
 676          * only when creating a new station entry
 677          */
 678         if (params->aid)
 679                 sta->sta.aid = params->aid;
 680
 681         /*
 682          * FIXME: updating the following information is racy when this
 683          *        function is called from ieee80211_change_station().
 684          *        However, all this information should be static so
 685          *        maybe we should just reject attemps to change it.
 686          */
 687
 688         if (params->listen_interval >= 0)
 689                 sta->listen_interval = params->listen_interval;
 690
 691         if (params->supported_rates) {
 692                 rates = 0;
 693
 694                 for (i = 0; i < params->supported_rates_len; i++) {
 695                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 696                         for (j = 0; j < sband->n_bitrates; j++) {
 697                                 if (sband->bitrates[j].bitrate == rate)
 698                                         rates |= BIT(j);
 699                         }
 700                 }
 701                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 702         }
 703
 704         if (params->ht_capa)
 705                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 706                                                   params->ht_capa,
 707                                                   &sta->sta.ht_cap);
 708
 709         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 710                 switch (params->plink_action) {
 711                 case PLINK_ACTION_OPEN:
 712                         mesh_plink_open(sta);
 713                         break;
 714                 case PLINK_ACTION_BLOCK:
 715                         mesh_plink_block(sta);
 716                         break;
 717                 }
 718         }
 719 }
 720
 721 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 722                                  u8 *mac, struct station_parameters *params)
 723 {
 724         struct ieee80211_local *local = wiphy_priv(wiphy);
 725         struct sta_info *sta;
 726         struct ieee80211_sub_if_data *sdata;
 727         int err;
 728         int layer2_update;
 729
 730         if (params->vlan) {
 731                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 732
 733                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 734                     sdata->vif.type != NL80211_IFTYPE_AP)
 735                         return -EINVAL;
 736         } else
 737                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 738
 739         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 740                 return -EINVAL;
 741
 742         if (is_multicast_ether_addr(mac))
 743                 return -EINVAL;
 744
 745         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 746         if (!sta)
 747                 return -ENOMEM;
 748
 749         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 750
 751         sta_apply_parameters(local, sta, params);
 752
 753         rate_control_rate_init(sta);
 754
 755         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 756                 sdata->vif.type == NL80211_IFTYPE_AP;
 757
 758         err = sta_info_insert_rcu(sta);
 759         if (err) {
 760                 rcu_read_unlock();
 761                 return err;
 762         }
 763
 764         if (layer2_update)
 765                 ieee80211_send_layer2_update(sta);
 766
 767         rcu_read_unlock();
 768
 769         return 0;
 770 }
 771
 772 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 773                                  u8 *mac)
 774 {
 775         struct ieee80211_local *local = wiphy_priv(wiphy);
 776         struct ieee80211_sub_if_data *sdata;
 777
 778         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 779
 780         if (mac)
 781                 return sta_info_destroy_addr_bss(sdata, mac);
 782
 783         sta_info_flush(local, sdata);
 784         return 0;
 785 }
 786
 787 static int ieee80211_change_station(struct wiphy *wiphy,
 788                                     struct net_device *dev,
 789                                     u8 *mac,
 790                                     struct station_parameters *params)
 791 {
 792         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 793         struct ieee80211_local *local = wiphy_priv(wiphy);
 794         struct sta_info *sta;
 795         struct ieee80211_sub_if_data *vlansdata;
 796
 797         rcu_read_lock();
 798
 799         sta = sta_info_get_bss(sdata, mac);
 800         if (!sta) {
 801                 rcu_read_unlock();
 802                 return -ENOENT;
 803         }
 804
 805         if (params->vlan && params->vlan != sta->sdata->dev) {
 806                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 807
 808                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 809                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 810                         rcu_read_unlock();
 811                         return -EINVAL;
 812                 }
 813
 814                 if (params->vlan->ieee80211_ptr->use_4addr) {
 815                         if (vlansdata->u.vlan.sta) {
 816                                 rcu_read_unlock();
 817                                 return -EBUSY;
 818                         }
 819
 820                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 821                 }
 822
 823                 sta->sdata = vlansdata;
 824                 ieee80211_send_layer2_update(sta);
 825         }
 826
 827         sta_apply_parameters(local, sta, params);
 828
 829         rcu_read_unlock();
 830
 831         return 0;
 832 }
 833
 834 #ifdef CONFIG_MAC80211_MESH
 835 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 836                                  u8 *dst, u8 *next_hop)
 837 {
 838         struct ieee80211_sub_if_data *sdata;
 839         struct mesh_path *mpath;
 840         struct sta_info *sta;
 841         int err;
 842
 843         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 844
 845         rcu_read_lock();
 846         sta = sta_info_get(sdata, next_hop);
 847         if (!sta) {
 848                 rcu_read_unlock();
 849                 return -ENOENT;
 850         }
 851
 852         err = mesh_path_add(dst, sdata);
 853         if (err) {
 854                 rcu_read_unlock();
 855                 return err;
 856         }
 857
 858         mpath = mesh_path_lookup(dst, sdata);
 859         if (!mpath) {
 860                 rcu_read_unlock();
 861                 return -ENXIO;
 862         }
 863         mesh_path_fix_nexthop(mpath, sta);
 864
 865         rcu_read_unlock();
 866         return 0;
 867 }
 868
 869 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 870                                  u8 *dst)
 871 {
 872         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 873
 874         if (dst)
 875                 return mesh_path_del(dst, sdata);
 876
 877         mesh_path_flush(sdata);
 878         return 0;
 879 }
 880
 881 static int ieee80211_change_mpath(struct wiphy *wiphy,
 882                                     struct net_device *dev,
 883                                     u8 *dst, u8 *next_hop)
 884 {
 885         struct ieee80211_sub_if_data *sdata;
 886         struct mesh_path *mpath;
 887         struct sta_info *sta;
 888
 889         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 890
 891         rcu_read_lock();
 892
 893         sta = sta_info_get(sdata, next_hop);
 894         if (!sta) {
 895                 rcu_read_unlock();
 896                 return -ENOENT;
 897         }
 898
 899         mpath = mesh_path_lookup(dst, sdata);
 900         if (!mpath) {
 901                 rcu_read_unlock();
 902                 return -ENOENT;
 903         }
 904
 905         mesh_path_fix_nexthop(mpath, sta);
 906
 907         rcu_read_unlock();
 908         return 0;
 909 }
 910
 911 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 912                             struct mpath_info *pinfo)
 913 {
 914         if (mpath->next_hop)
 915                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 916         else
 917                 memset(next_hop, 0, ETH_ALEN);
 918
 919         pinfo->generation = mesh_paths_generation;
 920
 921         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 922                         MPATH_INFO_SN |
 923                         MPATH_INFO_METRIC |
 924                         MPATH_INFO_EXPTIME |
 925                         MPATH_INFO_DISCOVERY_TIMEOUT |
 926                         MPATH_INFO_DISCOVERY_RETRIES |
 927                         MPATH_INFO_FLAGS;
 928
 929         pinfo->frame_qlen = mpath->frame_queue.qlen;
 930         pinfo->sn = mpath->sn;
 931         pinfo->metric = mpath->metric;
 932         if (time_before(jiffies, mpath->exp_time))
 933                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 934         pinfo->discovery_timeout =
 935                         jiffies_to_msecs(mpath->discovery_timeout);
 936         pinfo->discovery_retries = mpath->discovery_retries;
 937         pinfo->flags = 0;
 938         if (mpath->flags & MESH_PATH_ACTIVE)
 939                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 940         if (mpath->flags & MESH_PATH_RESOLVING)
 941                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 942         if (mpath->flags & MESH_PATH_SN_VALID)
 943                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 944         if (mpath->flags & MESH_PATH_FIXED)
 945                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 946         if (mpath->flags & MESH_PATH_RESOLVING)
 947                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 948
 949         pinfo->flags = mpath->flags;
 950 }
 951
 952 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 953                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 954
 955 {
 956         struct ieee80211_sub_if_data *sdata;
 957         struct mesh_path *mpath;
 958
 959         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 960
 961         rcu_read_lock();
 962         mpath = mesh_path_lookup(dst, sdata);
 963         if (!mpath) {
 964                 rcu_read_unlock();
 965                 return -ENOENT;
 966         }
 967         memcpy(dst, mpath->dst, ETH_ALEN);
 968         mpath_set_pinfo(mpath, next_hop, pinfo);
 969         rcu_read_unlock();
 970         return 0;
 971 }
 972
 973 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 974                                  int idx, u8 *dst, u8 *next_hop,
 975                                  struct mpath_info *pinfo)
 976 {
 977         struct ieee80211_sub_if_data *sdata;
 978         struct mesh_path *mpath;
 979
 980         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 981
 982         rcu_read_lock();
 983         mpath = mesh_path_lookup_by_idx(idx, sdata);
 984         if (!mpath) {
 985                 rcu_read_unlock();
 986                 return -ENOENT;
 987         }
 988         memcpy(dst, mpath->dst, ETH_ALEN);
 989         mpath_set_pinfo(mpath, next_hop, pinfo);
 990         rcu_read_unlock();
 991         return 0;
 992 }
 993
 994 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 995                                 struct net_device *dev,
 996                                 struct mesh_config *conf)
 997 {
 998         struct ieee80211_sub_if_data *sdata;
 999         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1000
1001         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1002         return 0;
1003 }
1004
1005 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1006 {
1007         return (mask >> (parm-1)) & 0x1;
1008 }
1009
1010 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1011                                 struct net_device *dev,
1012                                 const struct mesh_config *nconf, u32 mask)
1013 {
1014         struct mesh_config *conf;
1015         struct ieee80211_sub_if_data *sdata;
1016         struct ieee80211_if_mesh *ifmsh;
1017
1018         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1019         ifmsh = &sdata->u.mesh;
1020
1021         /* Set the config options which we are interested in setting */
1022         conf = &(sdata->u.mesh.mshcfg);
1023         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1024                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1025         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1026                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1027         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1028                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1029         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1030                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1031         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1032                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1033         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1034                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1035         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1036                 conf->auto_open_plinks = nconf->auto_open_plinks;
1037         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1038                 conf->dot11MeshHWMPmaxPREQretries =
1039                         nconf->dot11MeshHWMPmaxPREQretries;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1041                 conf->path_refresh_time = nconf->path_refresh_time;
1042         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1043                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1044         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1045                 conf->dot11MeshHWMPactivePathTimeout =
1046                         nconf->dot11MeshHWMPactivePathTimeout;
1047         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1048                 conf->dot11MeshHWMPpreqMinInterval =
1049                         nconf->dot11MeshHWMPpreqMinInterval;
1050         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1051                            mask))
1052                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1053                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1054         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1055                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1056                 ieee80211_mesh_root_setup(ifmsh);
1057         }
1058         return 0;
1059 }
1060
1061 #endif
1062
1063 static int ieee80211_change_bss(struct wiphy *wiphy,
1064                                 struct net_device *dev,
1065                                 struct bss_parameters *params)
1066 {
1067         struct ieee80211_sub_if_data *sdata;
1068         u32 changed = 0;
1069
1070         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1071
1072         if (params->use_cts_prot >= 0) {
1073                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1074                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1075         }
1076         if (params->use_short_preamble >= 0) {
1077                 sdata->vif.bss_conf.use_short_preamble =
1078                         params->use_short_preamble;
1079                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1080         }
1081
1082         if (!sdata->vif.bss_conf.use_short_slot &&
1083             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1084                 sdata->vif.bss_conf.use_short_slot = true;
1085                 changed |= BSS_CHANGED_ERP_SLOT;
1086         }
1087
1088         if (params->use_short_slot_time >= 0) {
1089                 sdata->vif.bss_conf.use_short_slot =
1090                         params->use_short_slot_time;
1091                 changed |= BSS_CHANGED_ERP_SLOT;
1092         }
1093
1094         if (params->basic_rates) {
1095                 int i, j;
1096                 u32 rates = 0;
1097                 struct ieee80211_local *local = wiphy_priv(wiphy);
1098                 struct ieee80211_supported_band *sband =
1099                         wiphy->bands[local->oper_channel->band];
1100
1101                 for (i = 0; i < params->basic_rates_len; i++) {
1102                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1103                         for (j = 0; j < sband->n_bitrates; j++) {
1104                                 if (sband->bitrates[j].bitrate == rate)
1105                                         rates |= BIT(j);
1106                         }
1107                 }
1108                 sdata->vif.bss_conf.basic_rates = rates;
1109                 changed |= BSS_CHANGED_BASIC_RATES;
1110         }
1111
1112         if (params->ap_isolate >= 0) {
1113                 if (params->ap_isolate)
1114                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1115                 else
1116                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1117         }
1118
1119         ieee80211_bss_info_change_notify(sdata, changed);
1120
1121         return 0;
1122 }
1123
1124 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1125                                     struct ieee80211_txq_params *params)
1126 {
1127         struct ieee80211_local *local = wiphy_priv(wiphy);
1128         struct ieee80211_tx_queue_params p;
1129
1130         if (!local->ops->conf_tx)
1131                 return -EOPNOTSUPP;
1132
1133         memset(&p, 0, sizeof(p));
1134         p.aifs = params->aifs;
1135         p.cw_max = params->cwmax;
1136         p.cw_min = params->cwmin;
1137         p.txop = params->txop;
1138
1139         /*
1140          * Setting tx queue params disables u-apsd because it's only
1141          * called in master mode.
1142          */
1143         p.uapsd = false;
1144
1145         if (drv_conf_tx(local, params->queue, &p)) {
1146                 printk(KERN_DEBUG "%s: failed to set TX queue "
1147                        "parameters for queue %d\n",
1148                        wiphy_name(local->hw.wiphy), params->queue);
1149                 return -EINVAL;
1150         }
1151
1152         return 0;
1153 }
1154
1155 static int ieee80211_set_channel(struct wiphy *wiphy,
1156                                  struct net_device *netdev,
1157                                  struct ieee80211_channel *chan,
1158                                  enum nl80211_channel_type channel_type)
1159 {
1160         struct ieee80211_local *local = wiphy_priv(wiphy);
1161         struct ieee80211_sub_if_data *sdata = NULL;
1162
1163         if (netdev)
1164                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1165
1166         switch (ieee80211_get_channel_mode(local, NULL)) {
1167         case CHAN_MODE_HOPPING:
1168                 return -EBUSY;
1169         case CHAN_MODE_FIXED:
1170                 if (local->oper_channel != chan)
1171                         return -EBUSY;
1172                 if (!sdata && local->_oper_channel_type == channel_type)
1173                         return 0;
1174                 break;
1175         case CHAN_MODE_UNDEFINED:
1176                 break;
1177         }
1178
1179         local->oper_channel = chan;
1180
1181         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1182                 return -EBUSY;
1183
1184         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1185         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1186                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1187
1188         return 0;
1189 }
1190
1191 #ifdef CONFIG_PM
1192 static int ieee80211_suspend(struct wiphy *wiphy)
1193 {
1194         return __ieee80211_suspend(wiphy_priv(wiphy));
1195 }
1196
1197 static int ieee80211_resume(struct wiphy *wiphy)
1198 {
1199         return __ieee80211_resume(wiphy_priv(wiphy));
1200 }
1201 #else
1202 #define ieee80211_suspend NULL
1203 #define ieee80211_resume NULL
1204 #endif
1205
1206 static int ieee80211_scan(struct wiphy *wiphy,
1207                           struct net_device *dev,
1208                           struct cfg80211_scan_request *req)
1209 {
1210         struct ieee80211_sub_if_data *sdata;
1211
1212         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1213
1214         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
1215             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
1216             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
1217             (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
1218                 return -EOPNOTSUPP;
1219
1220         return ieee80211_request_scan(sdata, req);
1221 }
1222
1223 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1224                           struct cfg80211_auth_request *req)
1225 {
1226         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1227 }
1228
1229 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1230                            struct cfg80211_assoc_request *req)
1231 {
1232         struct ieee80211_local *local = wiphy_priv(wiphy);
1233         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1234
1235         switch (ieee80211_get_channel_mode(local, sdata)) {
1236         case CHAN_MODE_HOPPING:
1237                 return -EBUSY;
1238         case CHAN_MODE_FIXED:
1239                 if (local->oper_channel == req->bss->channel)
1240                         break;
1241                 return -EBUSY;
1242         case CHAN_MODE_UNDEFINED:
1243                 break;
1244         }
1245
1246         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1247 }
1248
1249 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1250                             struct cfg80211_deauth_request *req,
1251                             void *cookie)
1252 {
1253         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1254                                     req, cookie);
1255 }
1256
1257 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1258                               struct cfg80211_disassoc_request *req,
1259                               void *cookie)
1260 {
1261         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1262                                       req, cookie);
1263 }
1264
1265 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1266                                struct cfg80211_ibss_params *params)
1267 {
1268         struct ieee80211_local *local = wiphy_priv(wiphy);
1269         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1270
1271         switch (ieee80211_get_channel_mode(local, sdata)) {
1272         case CHAN_MODE_HOPPING:
1273                 return -EBUSY;
1274         case CHAN_MODE_FIXED:
1275                 if (!params->channel_fixed)
1276                         return -EBUSY;
1277                 if (local->oper_channel == params->channel)
1278                         break;
1279                 return -EBUSY;
1280         case CHAN_MODE_UNDEFINED:
1281                 break;
1282         }
1283
1284         return ieee80211_ibss_join(sdata, params);
1285 }
1286
1287 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1288 {
1289         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290
1291         return ieee80211_ibss_leave(sdata);
1292 }
1293
1294 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1295 {
1296         struct ieee80211_local *local = wiphy_priv(wiphy);
1297         int err;
1298
1299         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1300                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1301
1302                 if (err)
1303                         return err;
1304         }
1305
1306         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1307                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1308
1309                 if (err)
1310                         return err;
1311         }
1312
1313         if (changed & WIPHY_PARAM_RETRY_SHORT)
1314                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1315         if (changed & WIPHY_PARAM_RETRY_LONG)
1316                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1317         if (changed &
1318             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1319                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1320
1321         return 0;
1322 }
1323
1324 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1325                                   enum nl80211_tx_power_setting type, int mbm)
1326 {
1327         struct ieee80211_local *local = wiphy_priv(wiphy);
1328         struct ieee80211_channel *chan = local->hw.conf.channel;
1329         u32 changes = 0;
1330
1331         switch (type) {
1332         case NL80211_TX_POWER_AUTOMATIC:
1333                 local->user_power_level = -1;
1334                 break;
1335         case NL80211_TX_POWER_LIMITED:
1336                 if (mbm < 0 || (mbm % 100))
1337                         return -EOPNOTSUPP;
1338                 local->user_power_level = MBM_TO_DBM(mbm);
1339                 break;
1340         case NL80211_TX_POWER_FIXED:
1341                 if (mbm < 0 || (mbm % 100))
1342                         return -EOPNOTSUPP;
1343                 /* TODO: move to cfg80211 when it knows the channel */
1344                 if (MBM_TO_DBM(mbm) > chan->max_power)
1345                         return -EINVAL;
1346                 local->user_power_level = MBM_TO_DBM(mbm);
1347                 break;
1348         }
1349
1350         ieee80211_hw_config(local, changes);
1351
1352         return 0;
1353 }
1354
1355 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1356 {
1357         struct ieee80211_local *local = wiphy_priv(wiphy);
1358
1359         *dbm = local->hw.conf.power_level;
1360
1361         return 0;
1362 }
1363
1364 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1365                                   u8 *addr)
1366 {
1367         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1368
1369         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1370
1371         return 0;
1372 }
1373
1374 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1375 {
1376         struct ieee80211_local *local = wiphy_priv(wiphy);
1377
1378         drv_rfkill_poll(local);
1379 }
1380
1381 #ifdef CONFIG_NL80211_TESTMODE
1382 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1383 {
1384         struct ieee80211_local *local = wiphy_priv(wiphy);
1385
1386         if (!local->ops->testmode_cmd)
1387                 return -EOPNOTSUPP;
1388
1389         return local->ops->testmode_cmd(&local->hw, data, len);
1390 }
1391 #endif
1392
1393 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1394                              enum ieee80211_smps_mode smps_mode)
1395 {
1396         const u8 *ap;
1397         enum ieee80211_smps_mode old_req;
1398         int err;
1399
1400         old_req = sdata->u.mgd.req_smps;
1401         sdata->u.mgd.req_smps = smps_mode;
1402
1403         if (old_req == smps_mode &&
1404             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1405                 return 0;
1406
1407         /*
1408          * If not associated, or current association is not an HT
1409          * association, there's no need to send an action frame.
1410          */
1411         if (!sdata->u.mgd.associated ||
1412             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1413                 mutex_lock(&sdata->local->iflist_mtx);
1414                 ieee80211_recalc_smps(sdata->local, sdata);
1415                 mutex_unlock(&sdata->local->iflist_mtx);
1416                 return 0;
1417         }
1418
1419         ap = sdata->u.mgd.associated->bssid;
1420
1421         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1422                 if (sdata->u.mgd.powersave)
1423                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1424                 else
1425                         smps_mode = IEEE80211_SMPS_OFF;
1426         }
1427
1428         /* send SM PS frame to AP */
1429         err = ieee80211_send_smps_action(sdata, smps_mode,
1430                                          ap, ap);
1431         if (err)
1432                 sdata->u.mgd.req_smps = old_req;
1433
1434         return err;
1435 }
1436
1437 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1438                                     bool enabled, int timeout)
1439 {
1440         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1441         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1442
1443         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1444                 return -EOPNOTSUPP;
1445
1446         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1447                 return -EOPNOTSUPP;
1448
1449         if (enabled == sdata->u.mgd.powersave &&
1450             timeout == local->dynamic_ps_forced_timeout)
1451                 return 0;
1452
1453         sdata->u.mgd.powersave = enabled;
1454         local->dynamic_ps_forced_timeout = timeout;
1455
1456         /* no change, but if automatic follow powersave */
1457         mutex_lock(&sdata->u.mgd.mtx);
1458         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1459         mutex_unlock(&sdata->u.mgd.mtx);
1460
1461         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1462                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1463
1464         ieee80211_recalc_ps(local, -1);
1465
1466         return 0;
1467 }
1468
1469 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1470                                          struct net_device *dev,
1471                                          s32 rssi_thold, u32 rssi_hyst)
1472 {
1473         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1474         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1475         struct ieee80211_vif *vif = &sdata->vif;
1476         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1477
1478         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1479             rssi_hyst == bss_conf->cqm_rssi_hyst)
1480                 return 0;
1481
1482         bss_conf->cqm_rssi_thold = rssi_thold;
1483         bss_conf->cqm_rssi_hyst = rssi_hyst;
1484
1485         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1486                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1487                         return -EOPNOTSUPP;
1488                 return 0;
1489         }
1490
1491         /* tell the driver upon association, unless already associated */
1492         if (sdata->u.mgd.associated)
1493                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1494
1495         return 0;
1496 }
1497
1498 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1499                                       struct net_device *dev,
1500                                       const u8 *addr,
1501                                       const struct cfg80211_bitrate_mask *mask)
1502 {
1503         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1504         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1505         int i;
1506
1507         /*
1508          * This _could_ be supported by providing a hook for
1509          * drivers for this function, but at this point it
1510          * doesn't seem worth bothering.
1511          */
1512         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1513                 return -EOPNOTSUPP;
1514
1515
1516         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1517                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1518
1519         return 0;
1520 }
1521
1522 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1523                                        struct net_device *dev,
1524                                        struct ieee80211_channel *chan,
1525                                        enum nl80211_channel_type channel_type,
1526                                        unsigned int duration,
1527                                        u64 *cookie)
1528 {
1529         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1530
1531         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1532                                               duration, cookie);
1533 }
1534
1535 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1536                                               struct net_device *dev,
1537                                               u64 cookie)
1538 {
1539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1542 }
1543
1544 static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev,
1545                             struct ieee80211_channel *chan,
1546                             enum nl80211_channel_type channel_type,
1547                             bool channel_type_valid,
1548                             const u8 *buf, size_t len, u64 *cookie)
1549 {
1550         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1551         struct ieee80211_local *local = sdata->local;
1552         struct sk_buff *skb;
1553         struct sta_info *sta;
1554         const struct ieee80211_mgmt *mgmt = (void *)buf;
1555         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1556                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1557
1558         /* Check that we are on the requested channel for transmission */
1559         if (chan != local->tmp_channel &&
1560             chan != local->oper_channel)
1561                 return -EBUSY;
1562         if (channel_type_valid &&
1563             (channel_type != local->tmp_channel_type &&
1564              channel_type != local->_oper_channel_type))
1565                 return -EBUSY;
1566
1567         switch (sdata->vif.type) {
1568         case NL80211_IFTYPE_ADHOC:
1569                 if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1570                         break;
1571                 rcu_read_lock();
1572                 sta = sta_info_get(sdata, mgmt->da);
1573                 rcu_read_unlock();
1574                 if (!sta)
1575                         return -ENOLINK;
1576                 break;
1577         case NL80211_IFTYPE_STATION:
1578                 if (!(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1579                         flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1580                 break;
1581         default:
1582                 return -EOPNOTSUPP;
1583         }
1584
1585         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1586         if (!skb)
1587                 return -ENOMEM;
1588         skb_reserve(skb, local->hw.extra_tx_headroom);
1589
1590         memcpy(skb_put(skb, len), buf, len);
1591
1592         IEEE80211_SKB_CB(skb)->flags = flags;
1593
1594         skb->dev = sdata->dev;
1595         ieee80211_tx_skb(sdata, skb);
1596
1597         *cookie = (unsigned long) skb;
1598         return 0;
1599 }
1600
1601 struct cfg80211_ops mac80211_config_ops = {
1602         .add_virtual_intf = ieee80211_add_iface,
1603         .del_virtual_intf = ieee80211_del_iface,
1604         .change_virtual_intf = ieee80211_change_iface,
1605         .add_key = ieee80211_add_key,
1606         .del_key = ieee80211_del_key,
1607         .get_key = ieee80211_get_key,
1608         .set_default_key = ieee80211_config_default_key,
1609         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1610         .add_beacon = ieee80211_add_beacon,
1611         .set_beacon = ieee80211_set_beacon,
1612         .del_beacon = ieee80211_del_beacon,
1613         .add_station = ieee80211_add_station,
1614         .del_station = ieee80211_del_station,
1615         .change_station = ieee80211_change_station,
1616         .get_station = ieee80211_get_station,
1617         .dump_station = ieee80211_dump_station,
1618         .dump_survey = ieee80211_dump_survey,
1619 #ifdef CONFIG_MAC80211_MESH
1620         .add_mpath = ieee80211_add_mpath,
1621         .del_mpath = ieee80211_del_mpath,
1622         .change_mpath = ieee80211_change_mpath,
1623         .get_mpath = ieee80211_get_mpath,
1624         .dump_mpath = ieee80211_dump_mpath,
1625         .set_mesh_params = ieee80211_set_mesh_params,
1626         .get_mesh_params = ieee80211_get_mesh_params,
1627 #endif
1628         .change_bss = ieee80211_change_bss,
1629         .set_txq_params = ieee80211_set_txq_params,
1630         .set_channel = ieee80211_set_channel,
1631         .suspend = ieee80211_suspend,
1632         .resume = ieee80211_resume,
1633         .scan = ieee80211_scan,
1634         .auth = ieee80211_auth,
1635         .assoc = ieee80211_assoc,
1636         .deauth = ieee80211_deauth,
1637         .disassoc = ieee80211_disassoc,
1638         .join_ibss = ieee80211_join_ibss,
1639         .leave_ibss = ieee80211_leave_ibss,
1640         .set_wiphy_params = ieee80211_set_wiphy_params,
1641         .set_tx_power = ieee80211_set_tx_power,
1642         .get_tx_power = ieee80211_get_tx_power,
1643         .set_wds_peer = ieee80211_set_wds_peer,
1644         .rfkill_poll = ieee80211_rfkill_poll,
1645         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1646         .set_power_mgmt = ieee80211_set_power_mgmt,
1647         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1648         .remain_on_channel = ieee80211_remain_on_channel,
1649         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1650         .action = ieee80211_action,
1651         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1652 };