1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name, 24 enum nl80211_iftype type, 25 u32 *flags, 26 struct vif_params *params) 27 { 28 struct ieee80211_local *local = wiphy_priv(wiphy); 29 struct net_device *dev; 30 struct ieee80211_sub_if_data *sdata; 31 int err; 32 33 err = ieee80211_if_add(local, name, &dev, type, params); 34 if (err) 35 return ERR_PTR(err); 36 37 if (type == NL80211_IFTYPE_MONITOR && flags) { 38 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 39 sdata->u.mntr_flags = *flags; 40 } 41 42 return dev; 43 } 44 45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 46 { 47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 48 49 return 0; 50 } 51 52 static int ieee80211_change_iface(struct wiphy *wiphy, 53 struct net_device *dev, 54 enum nl80211_iftype type, u32 *flags, 55 struct vif_params *params) 56 { 57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 58 int ret; 59 60 ret = ieee80211_if_change_type(sdata, type); 61 if (ret) 62 return ret; 63 64 if (type == NL80211_IFTYPE_AP_VLAN && 65 params && params->use_4addr == 0) 66 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 67 else if (type == NL80211_IFTYPE_STATION && 68 params && params->use_4addr >= 0) 69 sdata->u.mgd.use_4addr = params->use_4addr; 70 71 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 72 struct ieee80211_local *local = sdata->local; 73 74 if (ieee80211_sdata_running(sdata)) { 75 /* 76 * Prohibit MONITOR_FLAG_COOK_FRAMES to be 77 * changed while the interface is up. 78 * Else we would need to add a lot of cruft 79 * to update everything: 80 * cooked_mntrs, monitor and all fif_* counters 81 * reconfigure hardware 82 */ 83 if ((*flags & MONITOR_FLAG_COOK_FRAMES) != 84 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) 85 return -EBUSY; 86 87 ieee80211_adjust_monitor_flags(sdata, -1); 88 sdata->u.mntr_flags = *flags; 89 ieee80211_adjust_monitor_flags(sdata, 1); 90 91 ieee80211_configure_filter(local); 92 } else { 93 /* 94 * Because the interface is down, ieee80211_do_stop 95 * and ieee80211_do_open take care of "everything" 96 * mentioned in the comment above. 97 */ 98 sdata->u.mntr_flags = *flags; 99 } 100 } 101 102 return 0; 103 } 104 105 static int ieee80211_set_noack_map(struct wiphy *wiphy, 106 struct net_device *dev, 107 u16 noack_map) 108 { 109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 110 111 sdata->noack_map = noack_map; 112 return 0; 113 } 114 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 116 u8 key_idx, bool pairwise, const u8 *mac_addr, 117 struct key_params *params) 118 { 119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 120 struct sta_info *sta = NULL; 121 struct ieee80211_key *key; 122 int err; 123 124 if (!ieee80211_sdata_running(sdata)) 125 return -ENETDOWN; 126 127 /* reject WEP and TKIP keys if WEP failed to initialize */ 128 switch (params->cipher) { 129 case WLAN_CIPHER_SUITE_WEP40: 130 case WLAN_CIPHER_SUITE_TKIP: 131 case WLAN_CIPHER_SUITE_WEP104: 132 if (IS_ERR(sdata->local->wep_tx_tfm)) 133 return -EINVAL; 134 break; 135 default: 136 break; 137 } 138 139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 140 params->key, params->seq_len, params->seq); 141 if (IS_ERR(key)) 142 return PTR_ERR(key); 143 144 if (pairwise) 145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 146 147 mutex_lock(&sdata->local->sta_mtx); 148 149 if (mac_addr) { 150 if (ieee80211_vif_is_mesh(&sdata->vif)) 151 sta = sta_info_get(sdata, mac_addr); 152 else 153 sta = sta_info_get_bss(sdata, mac_addr); 154 if (!sta) { 155 ieee80211_key_free(sdata->local, key); 156 err = -ENOENT; 157 goto out_unlock; 158 } 159 } 160 161 err = ieee80211_key_link(key, sdata, sta); 162 if (err) 163 ieee80211_key_free(sdata->local, key); 164 165 out_unlock: 166 mutex_unlock(&sdata->local->sta_mtx); 167 168 return err; 169 } 170 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 172 u8 key_idx, bool pairwise, const u8 *mac_addr) 173 { 174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 175 struct ieee80211_local *local = sdata->local; 176 struct sta_info *sta; 177 struct ieee80211_key *key = NULL; 178 int ret; 179 180 mutex_lock(&local->sta_mtx); 181 mutex_lock(&local->key_mtx); 182 183 if (mac_addr) { 184 ret = -ENOENT; 185 186 sta = sta_info_get_bss(sdata, mac_addr); 187 if (!sta) 188 goto out_unlock; 189 190 if (pairwise) 191 key = key_mtx_dereference(local, sta->ptk); 192 else 193 key = key_mtx_dereference(local, sta->gtk[key_idx]); 194 } else 195 key = key_mtx_dereference(local, sdata->keys[key_idx]); 196 197 if (!key) { 198 ret = -ENOENT; 199 goto out_unlock; 200 } 201 202 __ieee80211_key_free(key); 203 204 ret = 0; 205 out_unlock: 206 mutex_unlock(&local->key_mtx); 207 mutex_unlock(&local->sta_mtx); 208 209 return ret; 210 } 211 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 213 u8 key_idx, bool pairwise, const u8 *mac_addr, 214 void *cookie, 215 void (*callback)(void *cookie, 216 struct key_params *params)) 217 { 218 struct ieee80211_sub_if_data *sdata; 219 struct sta_info *sta = NULL; 220 u8 seq[6] = {0}; 221 struct key_params params; 222 struct ieee80211_key *key = NULL; 223 u64 pn64; 224 u32 iv32; 225 u16 iv16; 226 int err = -ENOENT; 227 228 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 229 230 rcu_read_lock(); 231 232 if (mac_addr) { 233 sta = sta_info_get_bss(sdata, mac_addr); 234 if (!sta) 235 goto out; 236 237 if (pairwise) 238 key = rcu_dereference(sta->ptk); 239 else if (key_idx < NUM_DEFAULT_KEYS) 240 key = rcu_dereference(sta->gtk[key_idx]); 241 } else 242 key = rcu_dereference(sdata->keys[key_idx]); 243 244 if (!key) 245 goto out; 246 247 memset(¶ms, 0, sizeof(params)); 248 249 params.cipher = key->conf.cipher; 250 251 switch (key->conf.cipher) { 252 case WLAN_CIPHER_SUITE_TKIP: 253 iv32 = key->u.tkip.tx.iv32; 254 iv16 = key->u.tkip.tx.iv16; 255 256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 257 drv_get_tkip_seq(sdata->local, 258 key->conf.hw_key_idx, 259 &iv32, &iv16); 260 261 seq[0] = iv16 & 0xff; 262 seq[1] = (iv16 >> 8) & 0xff; 263 seq[2] = iv32 & 0xff; 264 seq[3] = (iv32 >> 8) & 0xff; 265 seq[4] = (iv32 >> 16) & 0xff; 266 seq[5] = (iv32 >> 24) & 0xff; 267 params.seq = seq; 268 params.seq_len = 6; 269 break; 270 case WLAN_CIPHER_SUITE_CCMP: 271 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 272 seq[0] = pn64; 273 seq[1] = pn64 >> 8; 274 seq[2] = pn64 >> 16; 275 seq[3] = pn64 >> 24; 276 seq[4] = pn64 >> 32; 277 seq[5] = pn64 >> 40; 278 params.seq = seq; 279 params.seq_len = 6; 280 break; 281 case WLAN_CIPHER_SUITE_AES_CMAC: 282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 283 seq[0] = pn64; 284 seq[1] = pn64 >> 8; 285 seq[2] = pn64 >> 16; 286 seq[3] = pn64 >> 24; 287 seq[4] = pn64 >> 32; 288 seq[5] = pn64 >> 40; 289 params.seq = seq; 290 params.seq_len = 6; 291 break; 292 } 293 294 params.key = key->conf.key; 295 params.key_len = key->conf.keylen; 296 297 callback(cookie, ¶ms); 298 err = 0; 299 300 out: 301 rcu_read_unlock(); 302 return err; 303 } 304 305 static int ieee80211_config_default_key(struct wiphy *wiphy, 306 struct net_device *dev, 307 u8 key_idx, bool uni, 308 bool multi) 309 { 310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 311 312 ieee80211_set_default_key(sdata, key_idx, uni, multi); 313 314 return 0; 315 } 316 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 318 struct net_device *dev, 319 u8 key_idx) 320 { 321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 322 323 ieee80211_set_default_mgmt_key(sdata, key_idx); 324 325 return 0; 326 } 327 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) 329 { 330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { 331 struct ieee80211_supported_band *sband; 332 sband = sta->local->hw.wiphy->bands[ 333 sta->local->hw.conf.channel->band]; 334 rate->legacy = sband->bitrates[idx].bitrate; 335 } else 336 rate->mcs = idx; 337 } 338 339 void sta_set_rate_info_tx(struct sta_info *sta, 340 const struct ieee80211_tx_rate *rate, 341 struct rate_info *rinfo) 342 { 343 rinfo->flags = 0; 344 if (rate->flags & IEEE80211_TX_RC_MCS) 345 rinfo->flags |= RATE_INFO_FLAGS_MCS; 346 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 347 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 348 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 349 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 350 rate_idx_to_bitrate(rinfo, sta, rate->idx); 351 } 352 353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 354 { 355 struct ieee80211_sub_if_data *sdata = sta->sdata; 356 struct timespec uptime; 357 358 sinfo->generation = sdata->local->sta_generation; 359 360 sinfo->filled = STATION_INFO_INACTIVE_TIME | 361 STATION_INFO_RX_BYTES | 362 STATION_INFO_TX_BYTES | 363 STATION_INFO_RX_PACKETS | 364 STATION_INFO_TX_PACKETS | 365 STATION_INFO_TX_RETRIES | 366 STATION_INFO_TX_FAILED | 367 STATION_INFO_TX_BITRATE | 368 STATION_INFO_RX_BITRATE | 369 STATION_INFO_RX_DROP_MISC | 370 STATION_INFO_BSS_PARAM | 371 STATION_INFO_CONNECTED_TIME | 372 STATION_INFO_STA_FLAGS | 373 STATION_INFO_BEACON_LOSS_COUNT; 374 375 do_posix_clock_monotonic_gettime(&uptime); 376 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 377 378 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 379 sinfo->rx_bytes = sta->rx_bytes; 380 sinfo->tx_bytes = sta->tx_bytes; 381 sinfo->rx_packets = sta->rx_packets; 382 sinfo->tx_packets = sta->tx_packets; 383 sinfo->tx_retries = sta->tx_retry_count; 384 sinfo->tx_failed = sta->tx_retry_failed; 385 sinfo->rx_dropped_misc = sta->rx_dropped; 386 sinfo->beacon_loss_count = sta->beacon_loss_count; 387 388 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 389 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 390 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 391 sinfo->signal = (s8)sta->last_signal; 392 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 393 } 394 395 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 396 397 sinfo->rxrate.flags = 0; 398 if (sta->last_rx_rate_flag & RX_FLAG_HT) 399 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; 400 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 401 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 402 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 403 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 404 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx); 405 406 if (ieee80211_vif_is_mesh(&sdata->vif)) { 407 #ifdef CONFIG_MAC80211_MESH 408 sinfo->filled |= STATION_INFO_LLID | 409 STATION_INFO_PLID | 410 STATION_INFO_PLINK_STATE; 411 412 sinfo->llid = le16_to_cpu(sta->llid); 413 sinfo->plid = le16_to_cpu(sta->plid); 414 sinfo->plink_state = sta->plink_state; 415 #endif 416 } 417 418 sinfo->bss_param.flags = 0; 419 if (sdata->vif.bss_conf.use_cts_prot) 420 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 421 if (sdata->vif.bss_conf.use_short_preamble) 422 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 423 if (sdata->vif.bss_conf.use_short_slot) 424 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 425 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 426 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 427 428 sinfo->sta_flags.set = 0; 429 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 430 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 431 BIT(NL80211_STA_FLAG_WME) | 432 BIT(NL80211_STA_FLAG_MFP) | 433 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 434 BIT(NL80211_STA_FLAG_TDLS_PEER); 435 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 436 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 437 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 438 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 439 if (test_sta_flag(sta, WLAN_STA_WME)) 440 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 441 if (test_sta_flag(sta, WLAN_STA_MFP)) 442 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 443 if (test_sta_flag(sta, WLAN_STA_AUTH)) 444 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 445 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 446 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 447 } 448 449 450 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 451 int idx, u8 *mac, struct station_info *sinfo) 452 { 453 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 454 struct sta_info *sta; 455 int ret = -ENOENT; 456 457 rcu_read_lock(); 458 459 sta = sta_info_get_by_idx(sdata, idx); 460 if (sta) { 461 ret = 0; 462 memcpy(mac, sta->sta.addr, ETH_ALEN); 463 sta_set_sinfo(sta, sinfo); 464 } 465 466 rcu_read_unlock(); 467 468 return ret; 469 } 470 471 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 472 int idx, struct survey_info *survey) 473 { 474 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 475 476 return drv_get_survey(local, idx, survey); 477 } 478 479 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 480 u8 *mac, struct station_info *sinfo) 481 { 482 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 483 struct sta_info *sta; 484 int ret = -ENOENT; 485 486 rcu_read_lock(); 487 488 sta = sta_info_get_bss(sdata, mac); 489 if (sta) { 490 ret = 0; 491 sta_set_sinfo(sta, sinfo); 492 } 493 494 rcu_read_unlock(); 495 496 return ret; 497 } 498 499 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 500 const u8 *resp, size_t resp_len) 501 { 502 struct sk_buff *new, *old; 503 504 if (!resp || !resp_len) 505 return 1; 506 507 old = rtnl_dereference(sdata->u.ap.probe_resp); 508 509 new = dev_alloc_skb(resp_len); 510 if (!new) 511 return -ENOMEM; 512 513 memcpy(skb_put(new, resp_len), resp, resp_len); 514 515 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 516 if (old) { 517 /* TODO: use call_rcu() */ 518 synchronize_rcu(); 519 dev_kfree_skb(old); 520 } 521 522 return 0; 523 } 524 525 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 526 struct cfg80211_beacon_data *params) 527 { 528 struct beacon_data *new, *old; 529 int new_head_len, new_tail_len; 530 int size, err; 531 u32 changed = BSS_CHANGED_BEACON; 532 533 old = rtnl_dereference(sdata->u.ap.beacon); 534 535 /* Need to have a beacon head if we don't have one yet */ 536 if (!params->head && !old) 537 return -EINVAL; 538 539 /* new or old head? */ 540 if (params->head) 541 new_head_len = params->head_len; 542 else 543 new_head_len = old->head_len; 544 545 /* new or old tail? */ 546 if (params->tail || !old) 547 /* params->tail_len will be zero for !params->tail */ 548 new_tail_len = params->tail_len; 549 else 550 new_tail_len = old->tail_len; 551 552 size = sizeof(*new) + new_head_len + new_tail_len; 553 554 new = kzalloc(size, GFP_KERNEL); 555 if (!new) 556 return -ENOMEM; 557 558 /* start filling the new info now */ 559 560 /* 561 * pointers go into the block we allocated, 562 * memory is | beacon_data | head | tail | 563 */ 564 new->head = ((u8 *) new) + sizeof(*new); 565 new->tail = new->head + new_head_len; 566 new->head_len = new_head_len; 567 new->tail_len = new_tail_len; 568 569 /* copy in head */ 570 if (params->head) 571 memcpy(new->head, params->head, new_head_len); 572 else 573 memcpy(new->head, old->head, new_head_len); 574 575 /* copy in optional tail */ 576 if (params->tail) 577 memcpy(new->tail, params->tail, new_tail_len); 578 else 579 if (old) 580 memcpy(new->tail, old->tail, new_tail_len); 581 582 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 583 params->probe_resp_len); 584 if (err < 0) 585 return err; 586 if (err == 0) 587 changed |= BSS_CHANGED_AP_PROBE_RESP; 588 589 rcu_assign_pointer(sdata->u.ap.beacon, new); 590 591 if (old) 592 kfree_rcu(old, rcu_head); 593 594 return changed; 595 } 596 597 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 598 struct cfg80211_ap_settings *params) 599 { 600 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 601 struct beacon_data *old; 602 struct ieee80211_sub_if_data *vlan; 603 u32 changed = BSS_CHANGED_BEACON_INT | 604 BSS_CHANGED_BEACON_ENABLED | 605 BSS_CHANGED_BEACON | 606 BSS_CHANGED_SSID; 607 int err; 608 609 old = rtnl_dereference(sdata->u.ap.beacon); 610 if (old) 611 return -EALREADY; 612 613 /* 614 * Apply control port protocol, this allows us to 615 * not encrypt dynamic WEP control frames. 616 */ 617 sdata->control_port_protocol = params->crypto.control_port_ethertype; 618 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 619 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 620 vlan->control_port_protocol = 621 params->crypto.control_port_ethertype; 622 vlan->control_port_no_encrypt = 623 params->crypto.control_port_no_encrypt; 624 } 625 626 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 627 sdata->vif.bss_conf.dtim_period = params->dtim_period; 628 629 sdata->vif.bss_conf.ssid_len = params->ssid_len; 630 if (params->ssid_len) 631 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 632 params->ssid_len); 633 sdata->vif.bss_conf.hidden_ssid = 634 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 635 636 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 637 if (err < 0) 638 return err; 639 changed |= err; 640 641 ieee80211_bss_info_change_notify(sdata, changed); 642 643 return 0; 644 } 645 646 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 647 struct cfg80211_beacon_data *params) 648 { 649 struct ieee80211_sub_if_data *sdata; 650 struct beacon_data *old; 651 int err; 652 653 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 654 655 old = rtnl_dereference(sdata->u.ap.beacon); 656 if (!old) 657 return -ENOENT; 658 659 err = ieee80211_assign_beacon(sdata, params); 660 if (err < 0) 661 return err; 662 ieee80211_bss_info_change_notify(sdata, err); 663 return 0; 664 } 665 666 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 667 { 668 struct ieee80211_sub_if_data *sdata; 669 struct beacon_data *old; 670 671 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 672 673 old = rtnl_dereference(sdata->u.ap.beacon); 674 if (!old) 675 return -ENOENT; 676 677 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 678 679 kfree_rcu(old, rcu_head); 680 681 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 682 683 return 0; 684 } 685 686 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 687 struct iapp_layer2_update { 688 u8 da[ETH_ALEN]; /* broadcast */ 689 u8 sa[ETH_ALEN]; /* STA addr */ 690 __be16 len; /* 6 */ 691 u8 dsap; /* 0 */ 692 u8 ssap; /* 0 */ 693 u8 control; 694 u8 xid_info[3]; 695 } __packed; 696 697 static void ieee80211_send_layer2_update(struct sta_info *sta) 698 { 699 struct iapp_layer2_update *msg; 700 struct sk_buff *skb; 701 702 /* Send Level 2 Update Frame to update forwarding tables in layer 2 703 * bridge devices */ 704 705 skb = dev_alloc_skb(sizeof(*msg)); 706 if (!skb) 707 return; 708 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 709 710 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 711 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 712 713 memset(msg->da, 0xff, ETH_ALEN); 714 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 715 msg->len = htons(6); 716 msg->dsap = 0; 717 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 718 msg->control = 0xaf; /* XID response lsb.1111F101. 719 * F=0 (no poll command; unsolicited frame) */ 720 msg->xid_info[0] = 0x81; /* XID format identifier */ 721 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 722 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 723 724 skb->dev = sta->sdata->dev; 725 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 726 memset(skb->cb, 0, sizeof(skb->cb)); 727 netif_rx_ni(skb); 728 } 729 730 static int sta_apply_parameters(struct ieee80211_local *local, 731 struct sta_info *sta, 732 struct station_parameters *params) 733 { 734 int ret = 0; 735 u32 rates; 736 int i, j; 737 struct ieee80211_supported_band *sband; 738 struct ieee80211_sub_if_data *sdata = sta->sdata; 739 u32 mask, set; 740 741 sband = local->hw.wiphy->bands[local->oper_channel->band]; 742 743 mask = params->sta_flags_mask; 744 set = params->sta_flags_set; 745 746 /* 747 * In mesh mode, we can clear AUTHENTICATED flag but must 748 * also make ASSOCIATED follow appropriately for the driver 749 * API. See also below, after AUTHORIZED changes. 750 */ 751 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 752 /* cfg80211 should not allow this in non-mesh modes */ 753 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 754 return -EINVAL; 755 756 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 757 !test_sta_flag(sta, WLAN_STA_AUTH)) { 758 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 759 if (ret) 760 return ret; 761 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 762 if (ret) 763 return ret; 764 } 765 } 766 767 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 768 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 769 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 770 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 771 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 772 if (ret) 773 return ret; 774 } 775 776 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 777 /* cfg80211 should not allow this in non-mesh modes */ 778 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 779 return -EINVAL; 780 781 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 782 test_sta_flag(sta, WLAN_STA_AUTH)) { 783 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 784 if (ret) 785 return ret; 786 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 787 if (ret) 788 return ret; 789 } 790 } 791 792 793 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 794 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 795 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 796 else 797 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 798 } 799 800 if (mask & BIT(NL80211_STA_FLAG_WME)) { 801 if (set & BIT(NL80211_STA_FLAG_WME)) { 802 set_sta_flag(sta, WLAN_STA_WME); 803 sta->sta.wme = true; 804 } else { 805 clear_sta_flag(sta, WLAN_STA_WME); 806 sta->sta.wme = false; 807 } 808 } 809 810 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 811 if (set & BIT(NL80211_STA_FLAG_MFP)) 812 set_sta_flag(sta, WLAN_STA_MFP); 813 else 814 clear_sta_flag(sta, WLAN_STA_MFP); 815 } 816 817 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 818 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 819 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 820 else 821 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 822 } 823 824 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 825 sta->sta.uapsd_queues = params->uapsd_queues; 826 sta->sta.max_sp = params->max_sp; 827 } 828 829 /* 830 * cfg80211 validates this (1-2007) and allows setting the AID 831 * only when creating a new station entry 832 */ 833 if (params->aid) 834 sta->sta.aid = params->aid; 835 836 /* 837 * FIXME: updating the following information is racy when this 838 * function is called from ieee80211_change_station(). 839 * However, all this information should be static so 840 * maybe we should just reject attemps to change it. 841 */ 842 843 if (params->listen_interval >= 0) 844 sta->listen_interval = params->listen_interval; 845 846 if (params->supported_rates) { 847 rates = 0; 848 849 for (i = 0; i < params->supported_rates_len; i++) { 850 int rate = (params->supported_rates[i] & 0x7f) * 5; 851 for (j = 0; j < sband->n_bitrates; j++) { 852 if (sband->bitrates[j].bitrate == rate) 853 rates |= BIT(j); 854 } 855 } 856 sta->sta.supp_rates[local->oper_channel->band] = rates; 857 } 858 859 if (params->ht_capa) 860 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 861 params->ht_capa, 862 &sta->sta.ht_cap); 863 864 if (ieee80211_vif_is_mesh(&sdata->vif)) { 865 #ifdef CONFIG_MAC80211_MESH 866 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) 867 switch (params->plink_state) { 868 case NL80211_PLINK_LISTEN: 869 case NL80211_PLINK_ESTAB: 870 case NL80211_PLINK_BLOCKED: 871 sta->plink_state = params->plink_state; 872 break; 873 default: 874 /* nothing */ 875 break; 876 } 877 else 878 switch (params->plink_action) { 879 case PLINK_ACTION_OPEN: 880 mesh_plink_open(sta); 881 break; 882 case PLINK_ACTION_BLOCK: 883 mesh_plink_block(sta); 884 break; 885 } 886 #endif 887 } 888 889 return 0; 890 } 891 892 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 893 u8 *mac, struct station_parameters *params) 894 { 895 struct ieee80211_local *local = wiphy_priv(wiphy); 896 struct sta_info *sta; 897 struct ieee80211_sub_if_data *sdata; 898 int err; 899 int layer2_update; 900 901 if (params->vlan) { 902 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 903 904 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 905 sdata->vif.type != NL80211_IFTYPE_AP) 906 return -EINVAL; 907 } else 908 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 909 910 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 911 return -EINVAL; 912 913 if (is_multicast_ether_addr(mac)) 914 return -EINVAL; 915 916 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 917 if (!sta) 918 return -ENOMEM; 919 920 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 921 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 922 923 err = sta_apply_parameters(local, sta, params); 924 if (err) { 925 sta_info_free(local, sta); 926 return err; 927 } 928 929 /* 930 * for TDLS, rate control should be initialized only when supported 931 * rates are known. 932 */ 933 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 934 rate_control_rate_init(sta); 935 936 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 937 sdata->vif.type == NL80211_IFTYPE_AP; 938 939 err = sta_info_insert_rcu(sta); 940 if (err) { 941 rcu_read_unlock(); 942 return err; 943 } 944 945 if (layer2_update) 946 ieee80211_send_layer2_update(sta); 947 948 rcu_read_unlock(); 949 950 return 0; 951 } 952 953 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 954 u8 *mac) 955 { 956 struct ieee80211_local *local = wiphy_priv(wiphy); 957 struct ieee80211_sub_if_data *sdata; 958 959 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 960 961 if (mac) 962 return sta_info_destroy_addr_bss(sdata, mac); 963 964 sta_info_flush(local, sdata); 965 return 0; 966 } 967 968 static int ieee80211_change_station(struct wiphy *wiphy, 969 struct net_device *dev, 970 u8 *mac, 971 struct station_parameters *params) 972 { 973 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 974 struct ieee80211_local *local = wiphy_priv(wiphy); 975 struct sta_info *sta; 976 struct ieee80211_sub_if_data *vlansdata; 977 int err; 978 979 mutex_lock(&local->sta_mtx); 980 981 sta = sta_info_get_bss(sdata, mac); 982 if (!sta) { 983 mutex_unlock(&local->sta_mtx); 984 return -ENOENT; 985 } 986 987 /* in station mode, supported rates are only valid with TDLS */ 988 if (sdata->vif.type == NL80211_IFTYPE_STATION && 989 params->supported_rates && 990 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 991 mutex_unlock(&local->sta_mtx); 992 return -EINVAL; 993 } 994 995 if (params->vlan && params->vlan != sta->sdata->dev) { 996 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 997 998 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 999 vlansdata->vif.type != NL80211_IFTYPE_AP) { 1000 mutex_unlock(&local->sta_mtx); 1001 return -EINVAL; 1002 } 1003 1004 if (params->vlan->ieee80211_ptr->use_4addr) { 1005 if (vlansdata->u.vlan.sta) { 1006 mutex_unlock(&local->sta_mtx); 1007 return -EBUSY; 1008 } 1009 1010 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1011 } 1012 1013 sta->sdata = vlansdata; 1014 ieee80211_send_layer2_update(sta); 1015 } 1016 1017 err = sta_apply_parameters(local, sta, params); 1018 if (err) { 1019 mutex_unlock(&local->sta_mtx); 1020 return err; 1021 } 1022 1023 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) 1024 rate_control_rate_init(sta); 1025 1026 mutex_unlock(&local->sta_mtx); 1027 1028 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1029 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1030 ieee80211_recalc_ps(local, -1); 1031 1032 return 0; 1033 } 1034 1035 #ifdef CONFIG_MAC80211_MESH 1036 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1037 u8 *dst, u8 *next_hop) 1038 { 1039 struct ieee80211_sub_if_data *sdata; 1040 struct mesh_path *mpath; 1041 struct sta_info *sta; 1042 int err; 1043 1044 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1045 1046 rcu_read_lock(); 1047 sta = sta_info_get(sdata, next_hop); 1048 if (!sta) { 1049 rcu_read_unlock(); 1050 return -ENOENT; 1051 } 1052 1053 err = mesh_path_add(dst, sdata); 1054 if (err) { 1055 rcu_read_unlock(); 1056 return err; 1057 } 1058 1059 mpath = mesh_path_lookup(dst, sdata); 1060 if (!mpath) { 1061 rcu_read_unlock(); 1062 return -ENXIO; 1063 } 1064 mesh_path_fix_nexthop(mpath, sta); 1065 1066 rcu_read_unlock(); 1067 return 0; 1068 } 1069 1070 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1071 u8 *dst) 1072 { 1073 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1074 1075 if (dst) 1076 return mesh_path_del(dst, sdata); 1077 1078 mesh_path_flush_by_iface(sdata); 1079 return 0; 1080 } 1081 1082 static int ieee80211_change_mpath(struct wiphy *wiphy, 1083 struct net_device *dev, 1084 u8 *dst, u8 *next_hop) 1085 { 1086 struct ieee80211_sub_if_data *sdata; 1087 struct mesh_path *mpath; 1088 struct sta_info *sta; 1089 1090 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1091 1092 rcu_read_lock(); 1093 1094 sta = sta_info_get(sdata, next_hop); 1095 if (!sta) { 1096 rcu_read_unlock(); 1097 return -ENOENT; 1098 } 1099 1100 mpath = mesh_path_lookup(dst, sdata); 1101 if (!mpath) { 1102 rcu_read_unlock(); 1103 return -ENOENT; 1104 } 1105 1106 mesh_path_fix_nexthop(mpath, sta); 1107 1108 rcu_read_unlock(); 1109 return 0; 1110 } 1111 1112 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1113 struct mpath_info *pinfo) 1114 { 1115 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1116 1117 if (next_hop_sta) 1118 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1119 else 1120 memset(next_hop, 0, ETH_ALEN); 1121 1122 pinfo->generation = mesh_paths_generation; 1123 1124 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1125 MPATH_INFO_SN | 1126 MPATH_INFO_METRIC | 1127 MPATH_INFO_EXPTIME | 1128 MPATH_INFO_DISCOVERY_TIMEOUT | 1129 MPATH_INFO_DISCOVERY_RETRIES | 1130 MPATH_INFO_FLAGS; 1131 1132 pinfo->frame_qlen = mpath->frame_queue.qlen; 1133 pinfo->sn = mpath->sn; 1134 pinfo->metric = mpath->metric; 1135 if (time_before(jiffies, mpath->exp_time)) 1136 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1137 pinfo->discovery_timeout = 1138 jiffies_to_msecs(mpath->discovery_timeout); 1139 pinfo->discovery_retries = mpath->discovery_retries; 1140 pinfo->flags = 0; 1141 if (mpath->flags & MESH_PATH_ACTIVE) 1142 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1143 if (mpath->flags & MESH_PATH_RESOLVING) 1144 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1145 if (mpath->flags & MESH_PATH_SN_VALID) 1146 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1147 if (mpath->flags & MESH_PATH_FIXED) 1148 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1149 if (mpath->flags & MESH_PATH_RESOLVING) 1150 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1151 1152 pinfo->flags = mpath->flags; 1153 } 1154 1155 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1156 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1157 1158 { 1159 struct ieee80211_sub_if_data *sdata; 1160 struct mesh_path *mpath; 1161 1162 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1163 1164 rcu_read_lock(); 1165 mpath = mesh_path_lookup(dst, sdata); 1166 if (!mpath) { 1167 rcu_read_unlock(); 1168 return -ENOENT; 1169 } 1170 memcpy(dst, mpath->dst, ETH_ALEN); 1171 mpath_set_pinfo(mpath, next_hop, pinfo); 1172 rcu_read_unlock(); 1173 return 0; 1174 } 1175 1176 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1177 int idx, u8 *dst, u8 *next_hop, 1178 struct mpath_info *pinfo) 1179 { 1180 struct ieee80211_sub_if_data *sdata; 1181 struct mesh_path *mpath; 1182 1183 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1184 1185 rcu_read_lock(); 1186 mpath = mesh_path_lookup_by_idx(idx, sdata); 1187 if (!mpath) { 1188 rcu_read_unlock(); 1189 return -ENOENT; 1190 } 1191 memcpy(dst, mpath->dst, ETH_ALEN); 1192 mpath_set_pinfo(mpath, next_hop, pinfo); 1193 rcu_read_unlock(); 1194 return 0; 1195 } 1196 1197 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1198 struct net_device *dev, 1199 struct mesh_config *conf) 1200 { 1201 struct ieee80211_sub_if_data *sdata; 1202 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1203 1204 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1205 return 0; 1206 } 1207 1208 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1209 { 1210 return (mask >> (parm-1)) & 0x1; 1211 } 1212 1213 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1214 const struct mesh_setup *setup) 1215 { 1216 u8 *new_ie; 1217 const u8 *old_ie; 1218 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1219 struct ieee80211_sub_if_data, u.mesh); 1220 1221 /* allocate information elements */ 1222 new_ie = NULL; 1223 old_ie = ifmsh->ie; 1224 1225 if (setup->ie_len) { 1226 new_ie = kmemdup(setup->ie, setup->ie_len, 1227 GFP_KERNEL); 1228 if (!new_ie) 1229 return -ENOMEM; 1230 } 1231 ifmsh->ie_len = setup->ie_len; 1232 ifmsh->ie = new_ie; 1233 kfree(old_ie); 1234 1235 /* now copy the rest of the setup parameters */ 1236 ifmsh->mesh_id_len = setup->mesh_id_len; 1237 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1238 ifmsh->mesh_pp_id = setup->path_sel_proto; 1239 ifmsh->mesh_pm_id = setup->path_metric; 1240 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1241 if (setup->is_authenticated) 1242 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1243 if (setup->is_secure) 1244 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1245 1246 /* mcast rate setting in Mesh Node */ 1247 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1248 sizeof(setup->mcast_rate)); 1249 1250 return 0; 1251 } 1252 1253 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1254 struct net_device *dev, u32 mask, 1255 const struct mesh_config *nconf) 1256 { 1257 struct mesh_config *conf; 1258 struct ieee80211_sub_if_data *sdata; 1259 struct ieee80211_if_mesh *ifmsh; 1260 1261 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1262 ifmsh = &sdata->u.mesh; 1263 1264 /* Set the config options which we are interested in setting */ 1265 conf = &(sdata->u.mesh.mshcfg); 1266 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1267 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1268 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1269 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1270 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1271 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1272 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1273 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1274 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1275 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1276 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1277 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1278 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1279 conf->dot11MeshTTL = nconf->element_ttl; 1280 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1281 conf->auto_open_plinks = nconf->auto_open_plinks; 1282 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1283 conf->dot11MeshHWMPmaxPREQretries = 1284 nconf->dot11MeshHWMPmaxPREQretries; 1285 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1286 conf->path_refresh_time = nconf->path_refresh_time; 1287 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1288 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1289 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1290 conf->dot11MeshHWMPactivePathTimeout = 1291 nconf->dot11MeshHWMPactivePathTimeout; 1292 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1293 conf->dot11MeshHWMPpreqMinInterval = 1294 nconf->dot11MeshHWMPpreqMinInterval; 1295 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1296 conf->dot11MeshHWMPperrMinInterval = 1297 nconf->dot11MeshHWMPperrMinInterval; 1298 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1299 mask)) 1300 conf->dot11MeshHWMPnetDiameterTraversalTime = 1301 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1302 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1303 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1304 ieee80211_mesh_root_setup(ifmsh); 1305 } 1306 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1307 /* our current gate announcement implementation rides on root 1308 * announcements, so require this ifmsh to also be a root node 1309 * */ 1310 if (nconf->dot11MeshGateAnnouncementProtocol && 1311 !conf->dot11MeshHWMPRootMode) { 1312 conf->dot11MeshHWMPRootMode = 1; 1313 ieee80211_mesh_root_setup(ifmsh); 1314 } 1315 conf->dot11MeshGateAnnouncementProtocol = 1316 nconf->dot11MeshGateAnnouncementProtocol; 1317 } 1318 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) { 1319 conf->dot11MeshHWMPRannInterval = 1320 nconf->dot11MeshHWMPRannInterval; 1321 } 1322 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1323 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1324 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1325 /* our RSSI threshold implementation is supported only for 1326 * devices that report signal in dBm. 1327 */ 1328 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1329 return -ENOTSUPP; 1330 conf->rssi_threshold = nconf->rssi_threshold; 1331 } 1332 return 0; 1333 } 1334 1335 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1336 const struct mesh_config *conf, 1337 const struct mesh_setup *setup) 1338 { 1339 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1340 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1341 int err; 1342 1343 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1344 err = copy_mesh_setup(ifmsh, setup); 1345 if (err) 1346 return err; 1347 ieee80211_start_mesh(sdata); 1348 1349 return 0; 1350 } 1351 1352 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1353 { 1354 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1355 1356 ieee80211_stop_mesh(sdata); 1357 1358 return 0; 1359 } 1360 #endif 1361 1362 static int ieee80211_change_bss(struct wiphy *wiphy, 1363 struct net_device *dev, 1364 struct bss_parameters *params) 1365 { 1366 struct ieee80211_sub_if_data *sdata; 1367 u32 changed = 0; 1368 1369 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1370 1371 if (params->use_cts_prot >= 0) { 1372 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1373 changed |= BSS_CHANGED_ERP_CTS_PROT; 1374 } 1375 if (params->use_short_preamble >= 0) { 1376 sdata->vif.bss_conf.use_short_preamble = 1377 params->use_short_preamble; 1378 changed |= BSS_CHANGED_ERP_PREAMBLE; 1379 } 1380 1381 if (!sdata->vif.bss_conf.use_short_slot && 1382 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1383 sdata->vif.bss_conf.use_short_slot = true; 1384 changed |= BSS_CHANGED_ERP_SLOT; 1385 } 1386 1387 if (params->use_short_slot_time >= 0) { 1388 sdata->vif.bss_conf.use_short_slot = 1389 params->use_short_slot_time; 1390 changed |= BSS_CHANGED_ERP_SLOT; 1391 } 1392 1393 if (params->basic_rates) { 1394 int i, j; 1395 u32 rates = 0; 1396 struct ieee80211_local *local = wiphy_priv(wiphy); 1397 struct ieee80211_supported_band *sband = 1398 wiphy->bands[local->oper_channel->band]; 1399 1400 for (i = 0; i < params->basic_rates_len; i++) { 1401 int rate = (params->basic_rates[i] & 0x7f) * 5; 1402 for (j = 0; j < sband->n_bitrates; j++) { 1403 if (sband->bitrates[j].bitrate == rate) 1404 rates |= BIT(j); 1405 } 1406 } 1407 sdata->vif.bss_conf.basic_rates = rates; 1408 changed |= BSS_CHANGED_BASIC_RATES; 1409 } 1410 1411 if (params->ap_isolate >= 0) { 1412 if (params->ap_isolate) 1413 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1414 else 1415 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1416 } 1417 1418 if (params->ht_opmode >= 0) { 1419 sdata->vif.bss_conf.ht_operation_mode = 1420 (u16) params->ht_opmode; 1421 changed |= BSS_CHANGED_HT; 1422 } 1423 1424 ieee80211_bss_info_change_notify(sdata, changed); 1425 1426 return 0; 1427 } 1428 1429 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1430 struct net_device *dev, 1431 struct ieee80211_txq_params *params) 1432 { 1433 struct ieee80211_local *local = wiphy_priv(wiphy); 1434 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1435 struct ieee80211_tx_queue_params p; 1436 1437 if (!local->ops->conf_tx) 1438 return -EOPNOTSUPP; 1439 1440 memset(&p, 0, sizeof(p)); 1441 p.aifs = params->aifs; 1442 p.cw_max = params->cwmax; 1443 p.cw_min = params->cwmin; 1444 p.txop = params->txop; 1445 1446 /* 1447 * Setting tx queue params disables u-apsd because it's only 1448 * called in master mode. 1449 */ 1450 p.uapsd = false; 1451 1452 if (params->queue >= local->hw.queues) 1453 return -EINVAL; 1454 1455 sdata->tx_conf[params->queue] = p; 1456 if (drv_conf_tx(local, sdata, params->queue, &p)) { 1457 wiphy_debug(local->hw.wiphy, 1458 "failed to set TX queue parameters for queue %d\n", 1459 params->queue); 1460 return -EINVAL; 1461 } 1462 1463 return 0; 1464 } 1465 1466 static int ieee80211_set_channel(struct wiphy *wiphy, 1467 struct net_device *netdev, 1468 struct ieee80211_channel *chan, 1469 enum nl80211_channel_type channel_type) 1470 { 1471 struct ieee80211_local *local = wiphy_priv(wiphy); 1472 struct ieee80211_sub_if_data *sdata = NULL; 1473 struct ieee80211_channel *old_oper; 1474 enum nl80211_channel_type old_oper_type; 1475 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT; 1476 1477 if (netdev) 1478 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1479 1480 switch (ieee80211_get_channel_mode(local, NULL)) { 1481 case CHAN_MODE_HOPPING: 1482 return -EBUSY; 1483 case CHAN_MODE_FIXED: 1484 if (local->oper_channel != chan) 1485 return -EBUSY; 1486 if (!sdata && local->_oper_channel_type == channel_type) 1487 return 0; 1488 break; 1489 case CHAN_MODE_UNDEFINED: 1490 break; 1491 } 1492 1493 if (sdata) 1494 old_vif_oper_type = sdata->vif.bss_conf.channel_type; 1495 old_oper_type = local->_oper_channel_type; 1496 1497 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1498 return -EBUSY; 1499 1500 old_oper = local->oper_channel; 1501 local->oper_channel = chan; 1502 1503 /* Update driver if changes were actually made. */ 1504 if ((old_oper != local->oper_channel) || 1505 (old_oper_type != local->_oper_channel_type)) 1506 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1507 1508 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR && 1509 old_vif_oper_type != sdata->vif.bss_conf.channel_type) 1510 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1511 1512 return 0; 1513 } 1514 1515 #ifdef CONFIG_PM 1516 static int ieee80211_suspend(struct wiphy *wiphy, 1517 struct cfg80211_wowlan *wowlan) 1518 { 1519 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1520 } 1521 1522 static int ieee80211_resume(struct wiphy *wiphy) 1523 { 1524 return __ieee80211_resume(wiphy_priv(wiphy)); 1525 } 1526 #else 1527 #define ieee80211_suspend NULL 1528 #define ieee80211_resume NULL 1529 #endif 1530 1531 static int ieee80211_scan(struct wiphy *wiphy, 1532 struct net_device *dev, 1533 struct cfg80211_scan_request *req) 1534 { 1535 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1536 1537 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1538 case NL80211_IFTYPE_STATION: 1539 case NL80211_IFTYPE_ADHOC: 1540 case NL80211_IFTYPE_MESH_POINT: 1541 case NL80211_IFTYPE_P2P_CLIENT: 1542 break; 1543 case NL80211_IFTYPE_P2P_GO: 1544 if (sdata->local->ops->hw_scan) 1545 break; 1546 /* 1547 * FIXME: implement NoA while scanning in software, 1548 * for now fall through to allow scanning only when 1549 * beaconing hasn't been configured yet 1550 */ 1551 case NL80211_IFTYPE_AP: 1552 if (sdata->u.ap.beacon) 1553 return -EOPNOTSUPP; 1554 break; 1555 default: 1556 return -EOPNOTSUPP; 1557 } 1558 1559 return ieee80211_request_scan(sdata, req); 1560 } 1561 1562 static int 1563 ieee80211_sched_scan_start(struct wiphy *wiphy, 1564 struct net_device *dev, 1565 struct cfg80211_sched_scan_request *req) 1566 { 1567 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1568 1569 if (!sdata->local->ops->sched_scan_start) 1570 return -EOPNOTSUPP; 1571 1572 return ieee80211_request_sched_scan_start(sdata, req); 1573 } 1574 1575 static int 1576 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 1577 { 1578 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1579 1580 if (!sdata->local->ops->sched_scan_stop) 1581 return -EOPNOTSUPP; 1582 1583 return ieee80211_request_sched_scan_stop(sdata); 1584 } 1585 1586 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1587 struct cfg80211_auth_request *req) 1588 { 1589 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1590 } 1591 1592 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1593 struct cfg80211_assoc_request *req) 1594 { 1595 struct ieee80211_local *local = wiphy_priv(wiphy); 1596 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1597 1598 switch (ieee80211_get_channel_mode(local, sdata)) { 1599 case CHAN_MODE_HOPPING: 1600 return -EBUSY; 1601 case CHAN_MODE_FIXED: 1602 if (local->oper_channel == req->bss->channel) 1603 break; 1604 return -EBUSY; 1605 case CHAN_MODE_UNDEFINED: 1606 break; 1607 } 1608 1609 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1610 } 1611 1612 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1613 struct cfg80211_deauth_request *req) 1614 { 1615 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1616 } 1617 1618 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1619 struct cfg80211_disassoc_request *req) 1620 { 1621 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1622 } 1623 1624 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1625 struct cfg80211_ibss_params *params) 1626 { 1627 struct ieee80211_local *local = wiphy_priv(wiphy); 1628 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1629 1630 switch (ieee80211_get_channel_mode(local, sdata)) { 1631 case CHAN_MODE_HOPPING: 1632 return -EBUSY; 1633 case CHAN_MODE_FIXED: 1634 if (!params->channel_fixed) 1635 return -EBUSY; 1636 if (local->oper_channel == params->channel) 1637 break; 1638 return -EBUSY; 1639 case CHAN_MODE_UNDEFINED: 1640 break; 1641 } 1642 1643 return ieee80211_ibss_join(sdata, params); 1644 } 1645 1646 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1647 { 1648 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1649 1650 return ieee80211_ibss_leave(sdata); 1651 } 1652 1653 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1654 { 1655 struct ieee80211_local *local = wiphy_priv(wiphy); 1656 int err; 1657 1658 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 1659 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 1660 1661 if (err) 1662 return err; 1663 } 1664 1665 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1666 err = drv_set_coverage_class(local, wiphy->coverage_class); 1667 1668 if (err) 1669 return err; 1670 } 1671 1672 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1673 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1674 1675 if (err) 1676 return err; 1677 } 1678 1679 if (changed & WIPHY_PARAM_RETRY_SHORT) 1680 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1681 if (changed & WIPHY_PARAM_RETRY_LONG) 1682 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1683 if (changed & 1684 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1685 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1686 1687 return 0; 1688 } 1689 1690 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1691 enum nl80211_tx_power_setting type, int mbm) 1692 { 1693 struct ieee80211_local *local = wiphy_priv(wiphy); 1694 struct ieee80211_channel *chan = local->hw.conf.channel; 1695 u32 changes = 0; 1696 1697 switch (type) { 1698 case NL80211_TX_POWER_AUTOMATIC: 1699 local->user_power_level = -1; 1700 break; 1701 case NL80211_TX_POWER_LIMITED: 1702 if (mbm < 0 || (mbm % 100)) 1703 return -EOPNOTSUPP; 1704 local->user_power_level = MBM_TO_DBM(mbm); 1705 break; 1706 case NL80211_TX_POWER_FIXED: 1707 if (mbm < 0 || (mbm % 100)) 1708 return -EOPNOTSUPP; 1709 /* TODO: move to cfg80211 when it knows the channel */ 1710 if (MBM_TO_DBM(mbm) > chan->max_power) 1711 return -EINVAL; 1712 local->user_power_level = MBM_TO_DBM(mbm); 1713 break; 1714 } 1715 1716 ieee80211_hw_config(local, changes); 1717 1718 return 0; 1719 } 1720 1721 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1722 { 1723 struct ieee80211_local *local = wiphy_priv(wiphy); 1724 1725 *dbm = local->hw.conf.power_level; 1726 1727 return 0; 1728 } 1729 1730 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1731 const u8 *addr) 1732 { 1733 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1734 1735 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1736 1737 return 0; 1738 } 1739 1740 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1741 { 1742 struct ieee80211_local *local = wiphy_priv(wiphy); 1743 1744 drv_rfkill_poll(local); 1745 } 1746 1747 #ifdef CONFIG_NL80211_TESTMODE 1748 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1749 { 1750 struct ieee80211_local *local = wiphy_priv(wiphy); 1751 1752 if (!local->ops->testmode_cmd) 1753 return -EOPNOTSUPP; 1754 1755 return local->ops->testmode_cmd(&local->hw, data, len); 1756 } 1757 1758 static int ieee80211_testmode_dump(struct wiphy *wiphy, 1759 struct sk_buff *skb, 1760 struct netlink_callback *cb, 1761 void *data, int len) 1762 { 1763 struct ieee80211_local *local = wiphy_priv(wiphy); 1764 1765 if (!local->ops->testmode_dump) 1766 return -EOPNOTSUPP; 1767 1768 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 1769 } 1770 #endif 1771 1772 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1773 enum ieee80211_smps_mode smps_mode) 1774 { 1775 const u8 *ap; 1776 enum ieee80211_smps_mode old_req; 1777 int err; 1778 1779 lockdep_assert_held(&sdata->u.mgd.mtx); 1780 1781 old_req = sdata->u.mgd.req_smps; 1782 sdata->u.mgd.req_smps = smps_mode; 1783 1784 if (old_req == smps_mode && 1785 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1786 return 0; 1787 1788 /* 1789 * If not associated, or current association is not an HT 1790 * association, there's no need to send an action frame. 1791 */ 1792 if (!sdata->u.mgd.associated || 1793 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1794 mutex_lock(&sdata->local->iflist_mtx); 1795 ieee80211_recalc_smps(sdata->local); 1796 mutex_unlock(&sdata->local->iflist_mtx); 1797 return 0; 1798 } 1799 1800 ap = sdata->u.mgd.associated->bssid; 1801 1802 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1803 if (sdata->u.mgd.powersave) 1804 smps_mode = IEEE80211_SMPS_DYNAMIC; 1805 else 1806 smps_mode = IEEE80211_SMPS_OFF; 1807 } 1808 1809 /* send SM PS frame to AP */ 1810 err = ieee80211_send_smps_action(sdata, smps_mode, 1811 ap, ap); 1812 if (err) 1813 sdata->u.mgd.req_smps = old_req; 1814 1815 return err; 1816 } 1817 1818 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1819 bool enabled, int timeout) 1820 { 1821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1822 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1823 1824 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1825 return -EOPNOTSUPP; 1826 1827 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1828 return -EOPNOTSUPP; 1829 1830 if (enabled == sdata->u.mgd.powersave && 1831 timeout == local->dynamic_ps_forced_timeout) 1832 return 0; 1833 1834 sdata->u.mgd.powersave = enabled; 1835 local->dynamic_ps_forced_timeout = timeout; 1836 1837 /* no change, but if automatic follow powersave */ 1838 mutex_lock(&sdata->u.mgd.mtx); 1839 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1840 mutex_unlock(&sdata->u.mgd.mtx); 1841 1842 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1843 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1844 1845 ieee80211_recalc_ps(local, -1); 1846 1847 return 0; 1848 } 1849 1850 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1851 struct net_device *dev, 1852 s32 rssi_thold, u32 rssi_hyst) 1853 { 1854 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1855 struct ieee80211_vif *vif = &sdata->vif; 1856 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1857 1858 if (rssi_thold == bss_conf->cqm_rssi_thold && 1859 rssi_hyst == bss_conf->cqm_rssi_hyst) 1860 return 0; 1861 1862 bss_conf->cqm_rssi_thold = rssi_thold; 1863 bss_conf->cqm_rssi_hyst = rssi_hyst; 1864 1865 /* tell the driver upon association, unless already associated */ 1866 if (sdata->u.mgd.associated && 1867 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 1868 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1869 1870 return 0; 1871 } 1872 1873 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1874 struct net_device *dev, 1875 const u8 *addr, 1876 const struct cfg80211_bitrate_mask *mask) 1877 { 1878 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1879 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1880 int i, ret; 1881 1882 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 1883 ret = drv_set_bitrate_mask(local, sdata, mask); 1884 if (ret) 1885 return ret; 1886 } 1887 1888 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 1889 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1890 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 1891 sizeof(mask->control[i].mcs)); 1892 } 1893 1894 return 0; 1895 } 1896 1897 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local, 1898 struct net_device *dev, 1899 struct ieee80211_channel *chan, 1900 enum nl80211_channel_type chantype, 1901 unsigned int duration, u64 *cookie) 1902 { 1903 int ret; 1904 u32 random_cookie; 1905 1906 lockdep_assert_held(&local->mtx); 1907 1908 if (local->hw_roc_cookie) 1909 return -EBUSY; 1910 /* must be nonzero */ 1911 random_cookie = random32() | 1; 1912 1913 *cookie = random_cookie; 1914 local->hw_roc_dev = dev; 1915 local->hw_roc_cookie = random_cookie; 1916 local->hw_roc_channel = chan; 1917 local->hw_roc_channel_type = chantype; 1918 local->hw_roc_duration = duration; 1919 ret = drv_remain_on_channel(local, chan, chantype, duration); 1920 if (ret) { 1921 local->hw_roc_channel = NULL; 1922 local->hw_roc_cookie = 0; 1923 } 1924 1925 return ret; 1926 } 1927 1928 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1929 struct net_device *dev, 1930 struct ieee80211_channel *chan, 1931 enum nl80211_channel_type channel_type, 1932 unsigned int duration, 1933 u64 *cookie) 1934 { 1935 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1936 struct ieee80211_local *local = sdata->local; 1937 1938 if (local->ops->remain_on_channel) { 1939 int ret; 1940 1941 mutex_lock(&local->mtx); 1942 ret = ieee80211_remain_on_channel_hw(local, dev, 1943 chan, channel_type, 1944 duration, cookie); 1945 local->hw_roc_for_tx = false; 1946 mutex_unlock(&local->mtx); 1947 1948 return ret; 1949 } 1950 1951 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1952 duration, cookie); 1953 } 1954 1955 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local, 1956 u64 cookie) 1957 { 1958 int ret; 1959 1960 lockdep_assert_held(&local->mtx); 1961 1962 if (local->hw_roc_cookie != cookie) 1963 return -ENOENT; 1964 1965 ret = drv_cancel_remain_on_channel(local); 1966 if (ret) 1967 return ret; 1968 1969 local->hw_roc_cookie = 0; 1970 local->hw_roc_channel = NULL; 1971 1972 ieee80211_recalc_idle(local); 1973 1974 return 0; 1975 } 1976 1977 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1978 struct net_device *dev, 1979 u64 cookie) 1980 { 1981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1982 struct ieee80211_local *local = sdata->local; 1983 1984 if (local->ops->cancel_remain_on_channel) { 1985 int ret; 1986 1987 mutex_lock(&local->mtx); 1988 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 1989 mutex_unlock(&local->mtx); 1990 1991 return ret; 1992 } 1993 1994 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 1995 } 1996 1997 static enum work_done_result 1998 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) 1999 { 2000 /* 2001 * Use the data embedded in the work struct for reporting 2002 * here so if the driver mangled the SKB before dropping 2003 * it (which is the only way we really should get here) 2004 * then we don't report mangled data. 2005 * 2006 * If there was no wait time, then by the time we get here 2007 * the driver will likely not have reported the status yet, 2008 * so in that case userspace will have to deal with it. 2009 */ 2010 2011 if (wk->offchan_tx.wait && !wk->offchan_tx.status) 2012 cfg80211_mgmt_tx_status(wk->sdata->dev, 2013 (unsigned long) wk->offchan_tx.frame, 2014 wk->data, wk->data_len, false, GFP_KERNEL); 2015 2016 return WORK_DONE_DESTROY; 2017 } 2018 2019 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, 2020 struct ieee80211_channel *chan, bool offchan, 2021 enum nl80211_channel_type channel_type, 2022 bool channel_type_valid, unsigned int wait, 2023 const u8 *buf, size_t len, bool no_cck, 2024 bool dont_wait_for_ack, u64 *cookie) 2025 { 2026 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2027 struct ieee80211_local *local = sdata->local; 2028 struct sk_buff *skb; 2029 struct sta_info *sta; 2030 struct ieee80211_work *wk; 2031 const struct ieee80211_mgmt *mgmt = (void *)buf; 2032 u32 flags; 2033 bool is_offchan = false; 2034 2035 if (dont_wait_for_ack) 2036 flags = IEEE80211_TX_CTL_NO_ACK; 2037 else 2038 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2039 IEEE80211_TX_CTL_REQ_TX_STATUS; 2040 2041 /* Check that we are on the requested channel for transmission */ 2042 if (chan != local->tmp_channel && 2043 chan != local->oper_channel) 2044 is_offchan = true; 2045 if (channel_type_valid && 2046 (channel_type != local->tmp_channel_type && 2047 channel_type != local->_oper_channel_type)) 2048 is_offchan = true; 2049 2050 if (chan == local->hw_roc_channel) { 2051 /* TODO: check channel type? */ 2052 is_offchan = false; 2053 flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2054 } 2055 2056 if (no_cck) 2057 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2058 2059 if (is_offchan && !offchan) 2060 return -EBUSY; 2061 2062 switch (sdata->vif.type) { 2063 case NL80211_IFTYPE_ADHOC: 2064 case NL80211_IFTYPE_AP: 2065 case NL80211_IFTYPE_AP_VLAN: 2066 case NL80211_IFTYPE_P2P_GO: 2067 case NL80211_IFTYPE_MESH_POINT: 2068 if (!ieee80211_is_action(mgmt->frame_control) || 2069 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2070 break; 2071 rcu_read_lock(); 2072 sta = sta_info_get(sdata, mgmt->da); 2073 rcu_read_unlock(); 2074 if (!sta) 2075 return -ENOLINK; 2076 break; 2077 case NL80211_IFTYPE_STATION: 2078 case NL80211_IFTYPE_P2P_CLIENT: 2079 break; 2080 default: 2081 return -EOPNOTSUPP; 2082 } 2083 2084 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2085 if (!skb) 2086 return -ENOMEM; 2087 skb_reserve(skb, local->hw.extra_tx_headroom); 2088 2089 memcpy(skb_put(skb, len), buf, len); 2090 2091 IEEE80211_SKB_CB(skb)->flags = flags; 2092 2093 skb->dev = sdata->dev; 2094 2095 *cookie = (unsigned long) skb; 2096 2097 if (is_offchan && local->ops->remain_on_channel) { 2098 unsigned int duration; 2099 int ret; 2100 2101 mutex_lock(&local->mtx); 2102 /* 2103 * If the duration is zero, then the driver 2104 * wouldn't actually do anything. Set it to 2105 * 100 for now. 2106 * 2107 * TODO: cancel the off-channel operation 2108 * when we get the SKB's TX status and 2109 * the wait time was zero before. 2110 */ 2111 duration = 100; 2112 if (wait) 2113 duration = wait; 2114 ret = ieee80211_remain_on_channel_hw(local, dev, chan, 2115 channel_type, 2116 duration, cookie); 2117 if (ret) { 2118 kfree_skb(skb); 2119 mutex_unlock(&local->mtx); 2120 return ret; 2121 } 2122 2123 local->hw_roc_for_tx = true; 2124 local->hw_roc_duration = wait; 2125 2126 /* 2127 * queue up frame for transmission after 2128 * ieee80211_ready_on_channel call 2129 */ 2130 2131 /* modify cookie to prevent API mismatches */ 2132 *cookie ^= 2; 2133 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2134 local->hw_roc_skb = skb; 2135 local->hw_roc_skb_for_status = skb; 2136 mutex_unlock(&local->mtx); 2137 2138 return 0; 2139 } 2140 2141 /* 2142 * Can transmit right away if the channel was the 2143 * right one and there's no wait involved... If a 2144 * wait is involved, we might otherwise not be on 2145 * the right channel for long enough! 2146 */ 2147 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) { 2148 ieee80211_tx_skb(sdata, skb); 2149 return 0; 2150 } 2151 2152 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL); 2153 if (!wk) { 2154 kfree_skb(skb); 2155 return -ENOMEM; 2156 } 2157 2158 wk->type = IEEE80211_WORK_OFFCHANNEL_TX; 2159 wk->chan = chan; 2160 wk->chan_type = channel_type; 2161 wk->sdata = sdata; 2162 wk->done = ieee80211_offchan_tx_done; 2163 wk->offchan_tx.frame = skb; 2164 wk->offchan_tx.wait = wait; 2165 wk->data_len = len; 2166 memcpy(wk->data, buf, len); 2167 2168 ieee80211_add_work(wk); 2169 return 0; 2170 } 2171 2172 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2173 struct net_device *dev, 2174 u64 cookie) 2175 { 2176 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2177 struct ieee80211_local *local = sdata->local; 2178 struct ieee80211_work *wk; 2179 int ret = -ENOENT; 2180 2181 mutex_lock(&local->mtx); 2182 2183 if (local->ops->cancel_remain_on_channel) { 2184 cookie ^= 2; 2185 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2186 2187 if (ret == 0) { 2188 kfree_skb(local->hw_roc_skb); 2189 local->hw_roc_skb = NULL; 2190 local->hw_roc_skb_for_status = NULL; 2191 } 2192 2193 mutex_unlock(&local->mtx); 2194 2195 return ret; 2196 } 2197 2198 list_for_each_entry(wk, &local->work_list, list) { 2199 if (wk->sdata != sdata) 2200 continue; 2201 2202 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX) 2203 continue; 2204 2205 if (cookie != (unsigned long) wk->offchan_tx.frame) 2206 continue; 2207 2208 wk->timeout = jiffies; 2209 2210 ieee80211_queue_work(&local->hw, &local->work_work); 2211 ret = 0; 2212 break; 2213 } 2214 mutex_unlock(&local->mtx); 2215 2216 return ret; 2217 } 2218 2219 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2220 struct net_device *dev, 2221 u16 frame_type, bool reg) 2222 { 2223 struct ieee80211_local *local = wiphy_priv(wiphy); 2224 2225 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) 2226 return; 2227 2228 if (reg) 2229 local->probe_req_reg++; 2230 else 2231 local->probe_req_reg--; 2232 2233 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2234 } 2235 2236 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2237 { 2238 struct ieee80211_local *local = wiphy_priv(wiphy); 2239 2240 if (local->started) 2241 return -EOPNOTSUPP; 2242 2243 return drv_set_antenna(local, tx_ant, rx_ant); 2244 } 2245 2246 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2247 { 2248 struct ieee80211_local *local = wiphy_priv(wiphy); 2249 2250 return drv_get_antenna(local, tx_ant, rx_ant); 2251 } 2252 2253 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2254 { 2255 struct ieee80211_local *local = wiphy_priv(wiphy); 2256 2257 return drv_set_ringparam(local, tx, rx); 2258 } 2259 2260 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2261 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2262 { 2263 struct ieee80211_local *local = wiphy_priv(wiphy); 2264 2265 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2266 } 2267 2268 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2269 struct net_device *dev, 2270 struct cfg80211_gtk_rekey_data *data) 2271 { 2272 struct ieee80211_local *local = wiphy_priv(wiphy); 2273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2274 2275 if (!local->ops->set_rekey_data) 2276 return -EOPNOTSUPP; 2277 2278 drv_set_rekey_data(local, sdata, data); 2279 2280 return 0; 2281 } 2282 2283 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2284 { 2285 u8 *pos = (void *)skb_put(skb, 7); 2286 2287 *pos++ = WLAN_EID_EXT_CAPABILITY; 2288 *pos++ = 5; /* len */ 2289 *pos++ = 0x0; 2290 *pos++ = 0x0; 2291 *pos++ = 0x0; 2292 *pos++ = 0x0; 2293 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2294 } 2295 2296 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2297 { 2298 struct ieee80211_local *local = sdata->local; 2299 u16 capab; 2300 2301 capab = 0; 2302 if (local->oper_channel->band != IEEE80211_BAND_2GHZ) 2303 return capab; 2304 2305 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2306 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2307 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2308 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2309 2310 return capab; 2311 } 2312 2313 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2314 u8 *peer, u8 *bssid) 2315 { 2316 struct ieee80211_tdls_lnkie *lnkid; 2317 2318 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2319 2320 lnkid->ie_type = WLAN_EID_LINK_ID; 2321 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2322 2323 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2324 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2325 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2326 } 2327 2328 static int 2329 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2330 u8 *peer, u8 action_code, u8 dialog_token, 2331 u16 status_code, struct sk_buff *skb) 2332 { 2333 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2334 struct ieee80211_tdls_data *tf; 2335 2336 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 2337 2338 memcpy(tf->da, peer, ETH_ALEN); 2339 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 2340 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 2341 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 2342 2343 switch (action_code) { 2344 case WLAN_TDLS_SETUP_REQUEST: 2345 tf->category = WLAN_CATEGORY_TDLS; 2346 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 2347 2348 skb_put(skb, sizeof(tf->u.setup_req)); 2349 tf->u.setup_req.dialog_token = dialog_token; 2350 tf->u.setup_req.capability = 2351 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2352 2353 ieee80211_add_srates_ie(&sdata->vif, skb); 2354 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2355 ieee80211_tdls_add_ext_capab(skb); 2356 break; 2357 case WLAN_TDLS_SETUP_RESPONSE: 2358 tf->category = WLAN_CATEGORY_TDLS; 2359 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 2360 2361 skb_put(skb, sizeof(tf->u.setup_resp)); 2362 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 2363 tf->u.setup_resp.dialog_token = dialog_token; 2364 tf->u.setup_resp.capability = 2365 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2366 2367 ieee80211_add_srates_ie(&sdata->vif, skb); 2368 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2369 ieee80211_tdls_add_ext_capab(skb); 2370 break; 2371 case WLAN_TDLS_SETUP_CONFIRM: 2372 tf->category = WLAN_CATEGORY_TDLS; 2373 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 2374 2375 skb_put(skb, sizeof(tf->u.setup_cfm)); 2376 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 2377 tf->u.setup_cfm.dialog_token = dialog_token; 2378 break; 2379 case WLAN_TDLS_TEARDOWN: 2380 tf->category = WLAN_CATEGORY_TDLS; 2381 tf->action_code = WLAN_TDLS_TEARDOWN; 2382 2383 skb_put(skb, sizeof(tf->u.teardown)); 2384 tf->u.teardown.reason_code = cpu_to_le16(status_code); 2385 break; 2386 case WLAN_TDLS_DISCOVERY_REQUEST: 2387 tf->category = WLAN_CATEGORY_TDLS; 2388 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 2389 2390 skb_put(skb, sizeof(tf->u.discover_req)); 2391 tf->u.discover_req.dialog_token = dialog_token; 2392 break; 2393 default: 2394 return -EINVAL; 2395 } 2396 2397 return 0; 2398 } 2399 2400 static int 2401 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 2402 u8 *peer, u8 action_code, u8 dialog_token, 2403 u16 status_code, struct sk_buff *skb) 2404 { 2405 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2406 struct ieee80211_mgmt *mgmt; 2407 2408 mgmt = (void *)skb_put(skb, 24); 2409 memset(mgmt, 0, 24); 2410 memcpy(mgmt->da, peer, ETH_ALEN); 2411 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2412 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 2413 2414 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2415 IEEE80211_STYPE_ACTION); 2416 2417 switch (action_code) { 2418 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2419 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 2420 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 2421 mgmt->u.action.u.tdls_discover_resp.action_code = 2422 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 2423 mgmt->u.action.u.tdls_discover_resp.dialog_token = 2424 dialog_token; 2425 mgmt->u.action.u.tdls_discover_resp.capability = 2426 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2427 2428 ieee80211_add_srates_ie(&sdata->vif, skb); 2429 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2430 ieee80211_tdls_add_ext_capab(skb); 2431 break; 2432 default: 2433 return -EINVAL; 2434 } 2435 2436 return 0; 2437 } 2438 2439 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2440 u8 *peer, u8 action_code, u8 dialog_token, 2441 u16 status_code, const u8 *extra_ies, 2442 size_t extra_ies_len) 2443 { 2444 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2445 struct ieee80211_local *local = sdata->local; 2446 struct ieee80211_tx_info *info; 2447 struct sk_buff *skb = NULL; 2448 bool send_direct; 2449 int ret; 2450 2451 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2452 return -ENOTSUPP; 2453 2454 /* make sure we are in managed mode, and associated */ 2455 if (sdata->vif.type != NL80211_IFTYPE_STATION || 2456 !sdata->u.mgd.associated) 2457 return -EINVAL; 2458 2459 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2460 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer); 2461 #endif 2462 2463 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 2464 max(sizeof(struct ieee80211_mgmt), 2465 sizeof(struct ieee80211_tdls_data)) + 2466 50 + /* supported rates */ 2467 7 + /* ext capab */ 2468 extra_ies_len + 2469 sizeof(struct ieee80211_tdls_lnkie)); 2470 if (!skb) 2471 return -ENOMEM; 2472 2473 info = IEEE80211_SKB_CB(skb); 2474 skb_reserve(skb, local->hw.extra_tx_headroom); 2475 2476 switch (action_code) { 2477 case WLAN_TDLS_SETUP_REQUEST: 2478 case WLAN_TDLS_SETUP_RESPONSE: 2479 case WLAN_TDLS_SETUP_CONFIRM: 2480 case WLAN_TDLS_TEARDOWN: 2481 case WLAN_TDLS_DISCOVERY_REQUEST: 2482 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 2483 action_code, dialog_token, 2484 status_code, skb); 2485 send_direct = false; 2486 break; 2487 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2488 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 2489 dialog_token, status_code, 2490 skb); 2491 send_direct = true; 2492 break; 2493 default: 2494 ret = -ENOTSUPP; 2495 break; 2496 } 2497 2498 if (ret < 0) 2499 goto fail; 2500 2501 if (extra_ies_len) 2502 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 2503 2504 /* the TDLS link IE is always added last */ 2505 switch (action_code) { 2506 case WLAN_TDLS_SETUP_REQUEST: 2507 case WLAN_TDLS_SETUP_CONFIRM: 2508 case WLAN_TDLS_TEARDOWN: 2509 case WLAN_TDLS_DISCOVERY_REQUEST: 2510 /* we are the initiator */ 2511 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 2512 sdata->u.mgd.bssid); 2513 break; 2514 case WLAN_TDLS_SETUP_RESPONSE: 2515 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2516 /* we are the responder */ 2517 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 2518 sdata->u.mgd.bssid); 2519 break; 2520 default: 2521 ret = -ENOTSUPP; 2522 goto fail; 2523 } 2524 2525 if (send_direct) { 2526 ieee80211_tx_skb(sdata, skb); 2527 return 0; 2528 } 2529 2530 /* 2531 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 2532 * we should default to AC_VI. 2533 */ 2534 switch (action_code) { 2535 case WLAN_TDLS_SETUP_REQUEST: 2536 case WLAN_TDLS_SETUP_RESPONSE: 2537 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 2538 skb->priority = 2; 2539 break; 2540 default: 2541 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 2542 skb->priority = 5; 2543 break; 2544 } 2545 2546 /* disable bottom halves when entering the Tx path */ 2547 local_bh_disable(); 2548 ret = ieee80211_subif_start_xmit(skb, dev); 2549 local_bh_enable(); 2550 2551 return ret; 2552 2553 fail: 2554 dev_kfree_skb(skb); 2555 return ret; 2556 } 2557 2558 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2559 u8 *peer, enum nl80211_tdls_operation oper) 2560 { 2561 struct sta_info *sta; 2562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2563 2564 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2565 return -ENOTSUPP; 2566 2567 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2568 return -EINVAL; 2569 2570 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2571 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer); 2572 #endif 2573 2574 switch (oper) { 2575 case NL80211_TDLS_ENABLE_LINK: 2576 rcu_read_lock(); 2577 sta = sta_info_get(sdata, peer); 2578 if (!sta) { 2579 rcu_read_unlock(); 2580 return -ENOLINK; 2581 } 2582 2583 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 2584 rcu_read_unlock(); 2585 break; 2586 case NL80211_TDLS_DISABLE_LINK: 2587 return sta_info_destroy_addr(sdata, peer); 2588 case NL80211_TDLS_TEARDOWN: 2589 case NL80211_TDLS_SETUP: 2590 case NL80211_TDLS_DISCOVERY_REQ: 2591 /* We don't support in-driver setup/teardown/discovery */ 2592 return -ENOTSUPP; 2593 default: 2594 return -ENOTSUPP; 2595 } 2596 2597 return 0; 2598 } 2599 2600 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 2601 const u8 *peer, u64 *cookie) 2602 { 2603 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2604 struct ieee80211_local *local = sdata->local; 2605 struct ieee80211_qos_hdr *nullfunc; 2606 struct sk_buff *skb; 2607 int size = sizeof(*nullfunc); 2608 __le16 fc; 2609 bool qos; 2610 struct ieee80211_tx_info *info; 2611 struct sta_info *sta; 2612 2613 rcu_read_lock(); 2614 sta = sta_info_get(sdata, peer); 2615 if (sta) { 2616 qos = test_sta_flag(sta, WLAN_STA_WME); 2617 rcu_read_unlock(); 2618 } else { 2619 rcu_read_unlock(); 2620 return -ENOLINK; 2621 } 2622 2623 if (qos) { 2624 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2625 IEEE80211_STYPE_QOS_NULLFUNC | 2626 IEEE80211_FCTL_FROMDS); 2627 } else { 2628 size -= 2; 2629 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2630 IEEE80211_STYPE_NULLFUNC | 2631 IEEE80211_FCTL_FROMDS); 2632 } 2633 2634 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 2635 if (!skb) 2636 return -ENOMEM; 2637 2638 skb->dev = dev; 2639 2640 skb_reserve(skb, local->hw.extra_tx_headroom); 2641 2642 nullfunc = (void *) skb_put(skb, size); 2643 nullfunc->frame_control = fc; 2644 nullfunc->duration_id = 0; 2645 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 2646 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 2647 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 2648 nullfunc->seq_ctrl = 0; 2649 2650 info = IEEE80211_SKB_CB(skb); 2651 2652 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 2653 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 2654 2655 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 2656 skb->priority = 7; 2657 if (qos) 2658 nullfunc->qos_ctrl = cpu_to_le16(7); 2659 2660 local_bh_disable(); 2661 ieee80211_xmit(sdata, skb); 2662 local_bh_enable(); 2663 2664 *cookie = (unsigned long) skb; 2665 return 0; 2666 } 2667 2668 static struct ieee80211_channel * 2669 ieee80211_wiphy_get_channel(struct wiphy *wiphy) 2670 { 2671 struct ieee80211_local *local = wiphy_priv(wiphy); 2672 2673 return local->oper_channel; 2674 } 2675 2676 struct cfg80211_ops mac80211_config_ops = { 2677 .add_virtual_intf = ieee80211_add_iface, 2678 .del_virtual_intf = ieee80211_del_iface, 2679 .change_virtual_intf = ieee80211_change_iface, 2680 .add_key = ieee80211_add_key, 2681 .del_key = ieee80211_del_key, 2682 .get_key = ieee80211_get_key, 2683 .set_default_key = ieee80211_config_default_key, 2684 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 2685 .start_ap = ieee80211_start_ap, 2686 .change_beacon = ieee80211_change_beacon, 2687 .stop_ap = ieee80211_stop_ap, 2688 .add_station = ieee80211_add_station, 2689 .del_station = ieee80211_del_station, 2690 .change_station = ieee80211_change_station, 2691 .get_station = ieee80211_get_station, 2692 .dump_station = ieee80211_dump_station, 2693 .dump_survey = ieee80211_dump_survey, 2694 #ifdef CONFIG_MAC80211_MESH 2695 .add_mpath = ieee80211_add_mpath, 2696 .del_mpath = ieee80211_del_mpath, 2697 .change_mpath = ieee80211_change_mpath, 2698 .get_mpath = ieee80211_get_mpath, 2699 .dump_mpath = ieee80211_dump_mpath, 2700 .update_mesh_config = ieee80211_update_mesh_config, 2701 .get_mesh_config = ieee80211_get_mesh_config, 2702 .join_mesh = ieee80211_join_mesh, 2703 .leave_mesh = ieee80211_leave_mesh, 2704 #endif 2705 .change_bss = ieee80211_change_bss, 2706 .set_txq_params = ieee80211_set_txq_params, 2707 .set_channel = ieee80211_set_channel, 2708 .suspend = ieee80211_suspend, 2709 .resume = ieee80211_resume, 2710 .scan = ieee80211_scan, 2711 .sched_scan_start = ieee80211_sched_scan_start, 2712 .sched_scan_stop = ieee80211_sched_scan_stop, 2713 .auth = ieee80211_auth, 2714 .assoc = ieee80211_assoc, 2715 .deauth = ieee80211_deauth, 2716 .disassoc = ieee80211_disassoc, 2717 .join_ibss = ieee80211_join_ibss, 2718 .leave_ibss = ieee80211_leave_ibss, 2719 .set_wiphy_params = ieee80211_set_wiphy_params, 2720 .set_tx_power = ieee80211_set_tx_power, 2721 .get_tx_power = ieee80211_get_tx_power, 2722 .set_wds_peer = ieee80211_set_wds_peer, 2723 .rfkill_poll = ieee80211_rfkill_poll, 2724 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 2725 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 2726 .set_power_mgmt = ieee80211_set_power_mgmt, 2727 .set_bitrate_mask = ieee80211_set_bitrate_mask, 2728 .remain_on_channel = ieee80211_remain_on_channel, 2729 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 2730 .mgmt_tx = ieee80211_mgmt_tx, 2731 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 2732 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 2733 .mgmt_frame_register = ieee80211_mgmt_frame_register, 2734 .set_antenna = ieee80211_set_antenna, 2735 .get_antenna = ieee80211_get_antenna, 2736 .set_ringparam = ieee80211_set_ringparam, 2737 .get_ringparam = ieee80211_get_ringparam, 2738 .set_rekey_data = ieee80211_set_rekey_data, 2739 .tdls_oper = ieee80211_tdls_oper, 2740 .tdls_mgmt = ieee80211_tdls_mgmt, 2741 .probe_client = ieee80211_probe_client, 2742 .get_channel = ieee80211_wiphy_get_channel, 2743 .set_noack_map = ieee80211_set_noack_map, 2744 }; 2745