1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 * 7 * This file is GPLv2 as found in COPYING. 8 */ 9 10 #include <linux/ieee80211.h> 11 #include <linux/nl80211.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/slab.h> 14 #include <net/net_namespace.h> 15 #include <linux/rcupdate.h> 16 #include <linux/if_ether.h> 17 #include <net/cfg80211.h> 18 #include "ieee80211_i.h" 19 #include "driver-ops.h" 20 #include "cfg.h" 21 #include "rate.h" 22 #include "mesh.h" 23 #include "wme.h" 24 25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 26 const char *name, 27 enum nl80211_iftype type, 28 u32 *flags, 29 struct vif_params *params) 30 { 31 struct ieee80211_local *local = wiphy_priv(wiphy); 32 struct wireless_dev *wdev; 33 struct ieee80211_sub_if_data *sdata; 34 int err; 35 36 err = ieee80211_if_add(local, name, &wdev, type, params); 37 if (err) 38 return ERR_PTR(err); 39 40 if (type == NL80211_IFTYPE_MONITOR && flags) { 41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 42 sdata->u.mntr_flags = *flags; 43 } 44 45 return wdev; 46 } 47 48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 49 { 50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 51 52 return 0; 53 } 54 55 static int ieee80211_change_iface(struct wiphy *wiphy, 56 struct net_device *dev, 57 enum nl80211_iftype type, u32 *flags, 58 struct vif_params *params) 59 { 60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 61 int ret; 62 63 ret = ieee80211_if_change_type(sdata, type); 64 if (ret) 65 return ret; 66 67 if (type == NL80211_IFTYPE_AP_VLAN && 68 params && params->use_4addr == 0) 69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 70 else if (type == NL80211_IFTYPE_STATION && 71 params && params->use_4addr >= 0) 72 sdata->u.mgd.use_4addr = params->use_4addr; 73 74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 75 struct ieee80211_local *local = sdata->local; 76 77 if (ieee80211_sdata_running(sdata)) { 78 u32 mask = MONITOR_FLAG_COOK_FRAMES | 79 MONITOR_FLAG_ACTIVE; 80 81 /* 82 * Prohibit MONITOR_FLAG_COOK_FRAMES and 83 * MONITOR_FLAG_ACTIVE to be changed while the 84 * interface is up. 85 * Else we would need to add a lot of cruft 86 * to update everything: 87 * cooked_mntrs, monitor and all fif_* counters 88 * reconfigure hardware 89 */ 90 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 91 return -EBUSY; 92 93 ieee80211_adjust_monitor_flags(sdata, -1); 94 sdata->u.mntr_flags = *flags; 95 ieee80211_adjust_monitor_flags(sdata, 1); 96 97 ieee80211_configure_filter(local); 98 } else { 99 /* 100 * Because the interface is down, ieee80211_do_stop 101 * and ieee80211_do_open take care of "everything" 102 * mentioned in the comment above. 103 */ 104 sdata->u.mntr_flags = *flags; 105 } 106 } 107 108 return 0; 109 } 110 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 112 struct wireless_dev *wdev) 113 { 114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 115 int ret; 116 117 mutex_lock(&sdata->local->chanctx_mtx); 118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 119 mutex_unlock(&sdata->local->chanctx_mtx); 120 if (ret < 0) 121 return ret; 122 123 return ieee80211_do_open(wdev, true); 124 } 125 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 127 struct wireless_dev *wdev) 128 { 129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 130 } 131 132 static int ieee80211_set_noack_map(struct wiphy *wiphy, 133 struct net_device *dev, 134 u16 noack_map) 135 { 136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 137 138 sdata->noack_map = noack_map; 139 return 0; 140 } 141 142 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 143 u8 key_idx, bool pairwise, const u8 *mac_addr, 144 struct key_params *params) 145 { 146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 147 struct ieee80211_local *local = sdata->local; 148 struct sta_info *sta = NULL; 149 const struct ieee80211_cipher_scheme *cs = NULL; 150 struct ieee80211_key *key; 151 int err; 152 153 if (!ieee80211_sdata_running(sdata)) 154 return -ENETDOWN; 155 156 /* reject WEP and TKIP keys if WEP failed to initialize */ 157 switch (params->cipher) { 158 case WLAN_CIPHER_SUITE_WEP40: 159 case WLAN_CIPHER_SUITE_TKIP: 160 case WLAN_CIPHER_SUITE_WEP104: 161 if (IS_ERR(local->wep_tx_tfm)) 162 return -EINVAL; 163 break; 164 case WLAN_CIPHER_SUITE_CCMP: 165 case WLAN_CIPHER_SUITE_CCMP_256: 166 case WLAN_CIPHER_SUITE_AES_CMAC: 167 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 168 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 169 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 170 case WLAN_CIPHER_SUITE_GCMP: 171 case WLAN_CIPHER_SUITE_GCMP_256: 172 break; 173 default: 174 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 175 break; 176 } 177 178 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 179 params->key, params->seq_len, params->seq, 180 cs); 181 if (IS_ERR(key)) 182 return PTR_ERR(key); 183 184 if (pairwise) 185 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 186 187 mutex_lock(&local->sta_mtx); 188 189 if (mac_addr) { 190 if (ieee80211_vif_is_mesh(&sdata->vif)) 191 sta = sta_info_get(sdata, mac_addr); 192 else 193 sta = sta_info_get_bss(sdata, mac_addr); 194 /* 195 * The ASSOC test makes sure the driver is ready to 196 * receive the key. When wpa_supplicant has roamed 197 * using FT, it attempts to set the key before 198 * association has completed, this rejects that attempt 199 * so it will set the key again after association. 200 * 201 * TODO: accept the key if we have a station entry and 202 * add it to the device after the station. 203 */ 204 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 205 ieee80211_key_free_unused(key); 206 err = -ENOENT; 207 goto out_unlock; 208 } 209 } 210 211 switch (sdata->vif.type) { 212 case NL80211_IFTYPE_STATION: 213 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 214 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 215 break; 216 case NL80211_IFTYPE_AP: 217 case NL80211_IFTYPE_AP_VLAN: 218 /* Keys without a station are used for TX only */ 219 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 220 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 221 break; 222 case NL80211_IFTYPE_ADHOC: 223 /* no MFP (yet) */ 224 break; 225 case NL80211_IFTYPE_MESH_POINT: 226 #ifdef CONFIG_MAC80211_MESH 227 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 228 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 229 break; 230 #endif 231 case NL80211_IFTYPE_WDS: 232 case NL80211_IFTYPE_MONITOR: 233 case NL80211_IFTYPE_P2P_DEVICE: 234 case NL80211_IFTYPE_UNSPECIFIED: 235 case NUM_NL80211_IFTYPES: 236 case NL80211_IFTYPE_P2P_CLIENT: 237 case NL80211_IFTYPE_P2P_GO: 238 case NL80211_IFTYPE_OCB: 239 /* shouldn't happen */ 240 WARN_ON_ONCE(1); 241 break; 242 } 243 244 if (sta) 245 sta->cipher_scheme = cs; 246 247 err = ieee80211_key_link(key, sdata, sta); 248 249 out_unlock: 250 mutex_unlock(&local->sta_mtx); 251 252 return err; 253 } 254 255 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 256 u8 key_idx, bool pairwise, const u8 *mac_addr) 257 { 258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 259 struct ieee80211_local *local = sdata->local; 260 struct sta_info *sta; 261 struct ieee80211_key *key = NULL; 262 int ret; 263 264 mutex_lock(&local->sta_mtx); 265 mutex_lock(&local->key_mtx); 266 267 if (mac_addr) { 268 ret = -ENOENT; 269 270 sta = sta_info_get_bss(sdata, mac_addr); 271 if (!sta) 272 goto out_unlock; 273 274 if (pairwise) 275 key = key_mtx_dereference(local, sta->ptk[key_idx]); 276 else 277 key = key_mtx_dereference(local, sta->gtk[key_idx]); 278 } else 279 key = key_mtx_dereference(local, sdata->keys[key_idx]); 280 281 if (!key) { 282 ret = -ENOENT; 283 goto out_unlock; 284 } 285 286 ieee80211_key_free(key, true); 287 288 ret = 0; 289 out_unlock: 290 mutex_unlock(&local->key_mtx); 291 mutex_unlock(&local->sta_mtx); 292 293 return ret; 294 } 295 296 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 297 u8 key_idx, bool pairwise, const u8 *mac_addr, 298 void *cookie, 299 void (*callback)(void *cookie, 300 struct key_params *params)) 301 { 302 struct ieee80211_sub_if_data *sdata; 303 struct sta_info *sta = NULL; 304 u8 seq[6] = {0}; 305 struct key_params params; 306 struct ieee80211_key *key = NULL; 307 u64 pn64; 308 u32 iv32; 309 u16 iv16; 310 int err = -ENOENT; 311 312 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 313 314 rcu_read_lock(); 315 316 if (mac_addr) { 317 sta = sta_info_get_bss(sdata, mac_addr); 318 if (!sta) 319 goto out; 320 321 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 322 key = rcu_dereference(sta->ptk[key_idx]); 323 else if (!pairwise && 324 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 325 key = rcu_dereference(sta->gtk[key_idx]); 326 } else 327 key = rcu_dereference(sdata->keys[key_idx]); 328 329 if (!key) 330 goto out; 331 332 memset(¶ms, 0, sizeof(params)); 333 334 params.cipher = key->conf.cipher; 335 336 switch (key->conf.cipher) { 337 case WLAN_CIPHER_SUITE_TKIP: 338 iv32 = key->u.tkip.tx.iv32; 339 iv16 = key->u.tkip.tx.iv16; 340 341 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 342 drv_get_tkip_seq(sdata->local, 343 key->conf.hw_key_idx, 344 &iv32, &iv16); 345 346 seq[0] = iv16 & 0xff; 347 seq[1] = (iv16 >> 8) & 0xff; 348 seq[2] = iv32 & 0xff; 349 seq[3] = (iv32 >> 8) & 0xff; 350 seq[4] = (iv32 >> 16) & 0xff; 351 seq[5] = (iv32 >> 24) & 0xff; 352 params.seq = seq; 353 params.seq_len = 6; 354 break; 355 case WLAN_CIPHER_SUITE_CCMP: 356 case WLAN_CIPHER_SUITE_CCMP_256: 357 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 358 seq[0] = pn64; 359 seq[1] = pn64 >> 8; 360 seq[2] = pn64 >> 16; 361 seq[3] = pn64 >> 24; 362 seq[4] = pn64 >> 32; 363 seq[5] = pn64 >> 40; 364 params.seq = seq; 365 params.seq_len = 6; 366 break; 367 case WLAN_CIPHER_SUITE_AES_CMAC: 368 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 369 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 370 seq[0] = pn64; 371 seq[1] = pn64 >> 8; 372 seq[2] = pn64 >> 16; 373 seq[3] = pn64 >> 24; 374 seq[4] = pn64 >> 32; 375 seq[5] = pn64 >> 40; 376 params.seq = seq; 377 params.seq_len = 6; 378 break; 379 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 380 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 381 pn64 = atomic64_read(&key->u.aes_gmac.tx_pn); 382 seq[0] = pn64; 383 seq[1] = pn64 >> 8; 384 seq[2] = pn64 >> 16; 385 seq[3] = pn64 >> 24; 386 seq[4] = pn64 >> 32; 387 seq[5] = pn64 >> 40; 388 params.seq = seq; 389 params.seq_len = 6; 390 break; 391 case WLAN_CIPHER_SUITE_GCMP: 392 case WLAN_CIPHER_SUITE_GCMP_256: 393 pn64 = atomic64_read(&key->u.gcmp.tx_pn); 394 seq[0] = pn64; 395 seq[1] = pn64 >> 8; 396 seq[2] = pn64 >> 16; 397 seq[3] = pn64 >> 24; 398 seq[4] = pn64 >> 32; 399 seq[5] = pn64 >> 40; 400 params.seq = seq; 401 params.seq_len = 6; 402 break; 403 } 404 405 params.key = key->conf.key; 406 params.key_len = key->conf.keylen; 407 408 callback(cookie, ¶ms); 409 err = 0; 410 411 out: 412 rcu_read_unlock(); 413 return err; 414 } 415 416 static int ieee80211_config_default_key(struct wiphy *wiphy, 417 struct net_device *dev, 418 u8 key_idx, bool uni, 419 bool multi) 420 { 421 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 422 423 ieee80211_set_default_key(sdata, key_idx, uni, multi); 424 425 return 0; 426 } 427 428 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 429 struct net_device *dev, 430 u8 key_idx) 431 { 432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 433 434 ieee80211_set_default_mgmt_key(sdata, key_idx); 435 436 return 0; 437 } 438 439 void sta_set_rate_info_tx(struct sta_info *sta, 440 const struct ieee80211_tx_rate *rate, 441 struct rate_info *rinfo) 442 { 443 rinfo->flags = 0; 444 if (rate->flags & IEEE80211_TX_RC_MCS) { 445 rinfo->flags |= RATE_INFO_FLAGS_MCS; 446 rinfo->mcs = rate->idx; 447 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 448 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 449 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 450 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 451 } else { 452 struct ieee80211_supported_band *sband; 453 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 454 u16 brate; 455 456 sband = sta->local->hw.wiphy->bands[ 457 ieee80211_get_sdata_band(sta->sdata)]; 458 brate = sband->bitrates[rate->idx].bitrate; 459 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 460 } 461 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 462 rinfo->bw = RATE_INFO_BW_40; 463 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 464 rinfo->bw = RATE_INFO_BW_80; 465 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 466 rinfo->bw = RATE_INFO_BW_160; 467 else 468 rinfo->bw = RATE_INFO_BW_20; 469 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 470 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 471 } 472 473 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 474 { 475 rinfo->flags = 0; 476 477 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 478 rinfo->flags |= RATE_INFO_FLAGS_MCS; 479 rinfo->mcs = sta->last_rx_rate_idx; 480 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 481 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 482 rinfo->nss = sta->last_rx_rate_vht_nss; 483 rinfo->mcs = sta->last_rx_rate_idx; 484 } else { 485 struct ieee80211_supported_band *sband; 486 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 487 u16 brate; 488 489 sband = sta->local->hw.wiphy->bands[ 490 ieee80211_get_sdata_band(sta->sdata)]; 491 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 492 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 493 } 494 495 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 496 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 497 498 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ) 499 rinfo->bw = RATE_INFO_BW_5; 500 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ) 501 rinfo->bw = RATE_INFO_BW_10; 502 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 503 rinfo->bw = RATE_INFO_BW_40; 504 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) 505 rinfo->bw = RATE_INFO_BW_80; 506 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) 507 rinfo->bw = RATE_INFO_BW_160; 508 else 509 rinfo->bw = RATE_INFO_BW_20; 510 } 511 512 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 513 int idx, u8 *mac, struct station_info *sinfo) 514 { 515 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 516 struct ieee80211_local *local = sdata->local; 517 struct sta_info *sta; 518 int ret = -ENOENT; 519 520 mutex_lock(&local->sta_mtx); 521 522 sta = sta_info_get_by_idx(sdata, idx); 523 if (sta) { 524 ret = 0; 525 memcpy(mac, sta->sta.addr, ETH_ALEN); 526 sta_set_sinfo(sta, sinfo); 527 } 528 529 mutex_unlock(&local->sta_mtx); 530 531 return ret; 532 } 533 534 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 535 int idx, struct survey_info *survey) 536 { 537 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 538 539 return drv_get_survey(local, idx, survey); 540 } 541 542 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 543 const u8 *mac, struct station_info *sinfo) 544 { 545 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 546 struct ieee80211_local *local = sdata->local; 547 struct sta_info *sta; 548 int ret = -ENOENT; 549 550 mutex_lock(&local->sta_mtx); 551 552 sta = sta_info_get_bss(sdata, mac); 553 if (sta) { 554 ret = 0; 555 sta_set_sinfo(sta, sinfo); 556 } 557 558 mutex_unlock(&local->sta_mtx); 559 560 return ret; 561 } 562 563 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 564 struct cfg80211_chan_def *chandef) 565 { 566 struct ieee80211_local *local = wiphy_priv(wiphy); 567 struct ieee80211_sub_if_data *sdata; 568 int ret = 0; 569 570 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 571 return 0; 572 573 mutex_lock(&local->mtx); 574 mutex_lock(&local->iflist_mtx); 575 if (local->use_chanctx) { 576 sdata = rcu_dereference_protected( 577 local->monitor_sdata, 578 lockdep_is_held(&local->iflist_mtx)); 579 if (sdata) { 580 ieee80211_vif_release_channel(sdata); 581 ret = ieee80211_vif_use_channel(sdata, chandef, 582 IEEE80211_CHANCTX_EXCLUSIVE); 583 } 584 } else if (local->open_count == local->monitors) { 585 local->_oper_chandef = *chandef; 586 ieee80211_hw_config(local, 0); 587 } 588 589 if (ret == 0) 590 local->monitor_chandef = *chandef; 591 mutex_unlock(&local->iflist_mtx); 592 mutex_unlock(&local->mtx); 593 594 return ret; 595 } 596 597 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 598 const u8 *resp, size_t resp_len, 599 const struct ieee80211_csa_settings *csa) 600 { 601 struct probe_resp *new, *old; 602 603 if (!resp || !resp_len) 604 return 1; 605 606 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 607 608 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 609 if (!new) 610 return -ENOMEM; 611 612 new->len = resp_len; 613 memcpy(new->data, resp, resp_len); 614 615 if (csa) 616 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 617 csa->n_counter_offsets_presp * 618 sizeof(new->csa_counter_offsets[0])); 619 620 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 621 if (old) 622 kfree_rcu(old, rcu_head); 623 624 return 0; 625 } 626 627 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 628 struct cfg80211_beacon_data *params, 629 const struct ieee80211_csa_settings *csa) 630 { 631 struct beacon_data *new, *old; 632 int new_head_len, new_tail_len; 633 int size, err; 634 u32 changed = BSS_CHANGED_BEACON; 635 636 old = sdata_dereference(sdata->u.ap.beacon, sdata); 637 638 639 /* Need to have a beacon head if we don't have one yet */ 640 if (!params->head && !old) 641 return -EINVAL; 642 643 /* new or old head? */ 644 if (params->head) 645 new_head_len = params->head_len; 646 else 647 new_head_len = old->head_len; 648 649 /* new or old tail? */ 650 if (params->tail || !old) 651 /* params->tail_len will be zero for !params->tail */ 652 new_tail_len = params->tail_len; 653 else 654 new_tail_len = old->tail_len; 655 656 size = sizeof(*new) + new_head_len + new_tail_len; 657 658 new = kzalloc(size, GFP_KERNEL); 659 if (!new) 660 return -ENOMEM; 661 662 /* start filling the new info now */ 663 664 /* 665 * pointers go into the block we allocated, 666 * memory is | beacon_data | head | tail | 667 */ 668 new->head = ((u8 *) new) + sizeof(*new); 669 new->tail = new->head + new_head_len; 670 new->head_len = new_head_len; 671 new->tail_len = new_tail_len; 672 673 if (csa) { 674 new->csa_current_counter = csa->count; 675 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 676 csa->n_counter_offsets_beacon * 677 sizeof(new->csa_counter_offsets[0])); 678 } 679 680 /* copy in head */ 681 if (params->head) 682 memcpy(new->head, params->head, new_head_len); 683 else 684 memcpy(new->head, old->head, new_head_len); 685 686 /* copy in optional tail */ 687 if (params->tail) 688 memcpy(new->tail, params->tail, new_tail_len); 689 else 690 if (old) 691 memcpy(new->tail, old->tail, new_tail_len); 692 693 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 694 params->probe_resp_len, csa); 695 if (err < 0) 696 return err; 697 if (err == 0) 698 changed |= BSS_CHANGED_AP_PROBE_RESP; 699 700 rcu_assign_pointer(sdata->u.ap.beacon, new); 701 702 if (old) 703 kfree_rcu(old, rcu_head); 704 705 return changed; 706 } 707 708 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 709 struct cfg80211_ap_settings *params) 710 { 711 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 712 struct ieee80211_local *local = sdata->local; 713 struct beacon_data *old; 714 struct ieee80211_sub_if_data *vlan; 715 u32 changed = BSS_CHANGED_BEACON_INT | 716 BSS_CHANGED_BEACON_ENABLED | 717 BSS_CHANGED_BEACON | 718 BSS_CHANGED_SSID | 719 BSS_CHANGED_P2P_PS | 720 BSS_CHANGED_TXPOWER; 721 int err; 722 723 old = sdata_dereference(sdata->u.ap.beacon, sdata); 724 if (old) 725 return -EALREADY; 726 727 switch (params->smps_mode) { 728 case NL80211_SMPS_OFF: 729 sdata->smps_mode = IEEE80211_SMPS_OFF; 730 break; 731 case NL80211_SMPS_STATIC: 732 sdata->smps_mode = IEEE80211_SMPS_STATIC; 733 break; 734 case NL80211_SMPS_DYNAMIC: 735 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 736 break; 737 default: 738 return -EINVAL; 739 } 740 sdata->needed_rx_chains = sdata->local->rx_chains; 741 742 mutex_lock(&local->mtx); 743 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 744 IEEE80211_CHANCTX_SHARED); 745 if (!err) 746 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 747 mutex_unlock(&local->mtx); 748 if (err) 749 return err; 750 751 /* 752 * Apply control port protocol, this allows us to 753 * not encrypt dynamic WEP control frames. 754 */ 755 sdata->control_port_protocol = params->crypto.control_port_ethertype; 756 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 757 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 758 ¶ms->crypto, 759 sdata->vif.type); 760 761 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 762 vlan->control_port_protocol = 763 params->crypto.control_port_ethertype; 764 vlan->control_port_no_encrypt = 765 params->crypto.control_port_no_encrypt; 766 vlan->encrypt_headroom = 767 ieee80211_cs_headroom(sdata->local, 768 ¶ms->crypto, 769 vlan->vif.type); 770 } 771 772 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 773 sdata->vif.bss_conf.dtim_period = params->dtim_period; 774 sdata->vif.bss_conf.enable_beacon = true; 775 776 sdata->vif.bss_conf.ssid_len = params->ssid_len; 777 if (params->ssid_len) 778 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 779 params->ssid_len); 780 sdata->vif.bss_conf.hidden_ssid = 781 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 782 783 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 784 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 785 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 786 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 787 if (params->p2p_opp_ps) 788 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 789 IEEE80211_P2P_OPPPS_ENABLE_BIT; 790 791 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 792 if (err < 0) { 793 ieee80211_vif_release_channel(sdata); 794 return err; 795 } 796 changed |= err; 797 798 err = drv_start_ap(sdata->local, sdata); 799 if (err) { 800 old = sdata_dereference(sdata->u.ap.beacon, sdata); 801 802 if (old) 803 kfree_rcu(old, rcu_head); 804 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 805 ieee80211_vif_release_channel(sdata); 806 return err; 807 } 808 809 ieee80211_recalc_dtim(local, sdata); 810 ieee80211_bss_info_change_notify(sdata, changed); 811 812 netif_carrier_on(dev); 813 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 814 netif_carrier_on(vlan->dev); 815 816 return 0; 817 } 818 819 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 820 struct cfg80211_beacon_data *params) 821 { 822 struct ieee80211_sub_if_data *sdata; 823 struct beacon_data *old; 824 int err; 825 826 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 827 sdata_assert_lock(sdata); 828 829 /* don't allow changing the beacon while CSA is in place - offset 830 * of channel switch counter may change 831 */ 832 if (sdata->vif.csa_active) 833 return -EBUSY; 834 835 old = sdata_dereference(sdata->u.ap.beacon, sdata); 836 if (!old) 837 return -ENOENT; 838 839 err = ieee80211_assign_beacon(sdata, params, NULL); 840 if (err < 0) 841 return err; 842 ieee80211_bss_info_change_notify(sdata, err); 843 return 0; 844 } 845 846 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 847 { 848 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 849 struct ieee80211_sub_if_data *vlan; 850 struct ieee80211_local *local = sdata->local; 851 struct beacon_data *old_beacon; 852 struct probe_resp *old_probe_resp; 853 struct cfg80211_chan_def chandef; 854 855 sdata_assert_lock(sdata); 856 857 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 858 if (!old_beacon) 859 return -ENOENT; 860 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 861 862 /* abort any running channel switch */ 863 mutex_lock(&local->mtx); 864 sdata->vif.csa_active = false; 865 if (sdata->csa_block_tx) { 866 ieee80211_wake_vif_queues(local, sdata, 867 IEEE80211_QUEUE_STOP_REASON_CSA); 868 sdata->csa_block_tx = false; 869 } 870 871 mutex_unlock(&local->mtx); 872 873 kfree(sdata->u.ap.next_beacon); 874 sdata->u.ap.next_beacon = NULL; 875 876 /* turn off carrier for this interface and dependent VLANs */ 877 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 878 netif_carrier_off(vlan->dev); 879 netif_carrier_off(dev); 880 881 /* remove beacon and probe response */ 882 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 883 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 884 kfree_rcu(old_beacon, rcu_head); 885 if (old_probe_resp) 886 kfree_rcu(old_probe_resp, rcu_head); 887 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 888 889 __sta_info_flush(sdata, true); 890 ieee80211_free_keys(sdata, true); 891 892 sdata->vif.bss_conf.enable_beacon = false; 893 sdata->vif.bss_conf.ssid_len = 0; 894 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 895 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 896 897 if (sdata->wdev.cac_started) { 898 chandef = sdata->vif.bss_conf.chandef; 899 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 900 cfg80211_cac_event(sdata->dev, &chandef, 901 NL80211_RADAR_CAC_ABORTED, 902 GFP_KERNEL); 903 } 904 905 drv_stop_ap(sdata->local, sdata); 906 907 /* free all potentially still buffered bcast frames */ 908 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 909 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 910 911 mutex_lock(&local->mtx); 912 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 913 ieee80211_vif_release_channel(sdata); 914 mutex_unlock(&local->mtx); 915 916 return 0; 917 } 918 919 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 920 struct iapp_layer2_update { 921 u8 da[ETH_ALEN]; /* broadcast */ 922 u8 sa[ETH_ALEN]; /* STA addr */ 923 __be16 len; /* 6 */ 924 u8 dsap; /* 0 */ 925 u8 ssap; /* 0 */ 926 u8 control; 927 u8 xid_info[3]; 928 } __packed; 929 930 static void ieee80211_send_layer2_update(struct sta_info *sta) 931 { 932 struct iapp_layer2_update *msg; 933 struct sk_buff *skb; 934 935 /* Send Level 2 Update Frame to update forwarding tables in layer 2 936 * bridge devices */ 937 938 skb = dev_alloc_skb(sizeof(*msg)); 939 if (!skb) 940 return; 941 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 942 943 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 944 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 945 946 eth_broadcast_addr(msg->da); 947 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 948 msg->len = htons(6); 949 msg->dsap = 0; 950 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 951 msg->control = 0xaf; /* XID response lsb.1111F101. 952 * F=0 (no poll command; unsolicited frame) */ 953 msg->xid_info[0] = 0x81; /* XID format identifier */ 954 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 955 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 956 957 skb->dev = sta->sdata->dev; 958 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 959 memset(skb->cb, 0, sizeof(skb->cb)); 960 netif_rx_ni(skb); 961 } 962 963 static int sta_apply_auth_flags(struct ieee80211_local *local, 964 struct sta_info *sta, 965 u32 mask, u32 set) 966 { 967 int ret; 968 969 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 970 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 971 !test_sta_flag(sta, WLAN_STA_AUTH)) { 972 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 973 if (ret) 974 return ret; 975 } 976 977 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 978 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 979 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 980 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 981 if (ret) 982 return ret; 983 } 984 985 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 986 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 987 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 988 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 989 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 990 else 991 ret = 0; 992 if (ret) 993 return ret; 994 } 995 996 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 997 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 998 test_sta_flag(sta, WLAN_STA_ASSOC)) { 999 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1000 if (ret) 1001 return ret; 1002 } 1003 1004 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1005 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1006 test_sta_flag(sta, WLAN_STA_AUTH)) { 1007 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1008 if (ret) 1009 return ret; 1010 } 1011 1012 return 0; 1013 } 1014 1015 static int sta_apply_parameters(struct ieee80211_local *local, 1016 struct sta_info *sta, 1017 struct station_parameters *params) 1018 { 1019 int ret = 0; 1020 struct ieee80211_supported_band *sband; 1021 struct ieee80211_sub_if_data *sdata = sta->sdata; 1022 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1023 u32 mask, set; 1024 1025 sband = local->hw.wiphy->bands[band]; 1026 1027 mask = params->sta_flags_mask; 1028 set = params->sta_flags_set; 1029 1030 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1031 /* 1032 * In mesh mode, ASSOCIATED isn't part of the nl80211 1033 * API but must follow AUTHENTICATED for driver state. 1034 */ 1035 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1036 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1037 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1038 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1039 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1040 /* 1041 * TDLS -- everything follows authorized, but 1042 * only becoming authorized is possible, not 1043 * going back 1044 */ 1045 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1046 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1047 BIT(NL80211_STA_FLAG_ASSOCIATED); 1048 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1049 BIT(NL80211_STA_FLAG_ASSOCIATED); 1050 } 1051 } 1052 1053 /* auth flags will be set later for TDLS stations */ 1054 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1055 ret = sta_apply_auth_flags(local, sta, mask, set); 1056 if (ret) 1057 return ret; 1058 } 1059 1060 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1061 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1062 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1063 else 1064 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1065 } 1066 1067 if (mask & BIT(NL80211_STA_FLAG_WME)) 1068 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1069 1070 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1071 if (set & BIT(NL80211_STA_FLAG_MFP)) 1072 set_sta_flag(sta, WLAN_STA_MFP); 1073 else 1074 clear_sta_flag(sta, WLAN_STA_MFP); 1075 } 1076 1077 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1078 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1079 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1080 else 1081 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1082 } 1083 1084 /* mark TDLS channel switch support, if the AP allows it */ 1085 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1086 !sdata->u.mgd.tdls_chan_switch_prohibited && 1087 params->ext_capab_len >= 4 && 1088 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1089 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1090 1091 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1092 sta->sta.uapsd_queues = params->uapsd_queues; 1093 sta->sta.max_sp = params->max_sp; 1094 } 1095 1096 /* 1097 * cfg80211 validates this (1-2007) and allows setting the AID 1098 * only when creating a new station entry 1099 */ 1100 if (params->aid) 1101 sta->sta.aid = params->aid; 1102 1103 /* 1104 * Some of the following updates would be racy if called on an 1105 * existing station, via ieee80211_change_station(). However, 1106 * all such changes are rejected by cfg80211 except for updates 1107 * changing the supported rates on an existing but not yet used 1108 * TDLS peer. 1109 */ 1110 1111 if (params->listen_interval >= 0) 1112 sta->listen_interval = params->listen_interval; 1113 1114 if (params->supported_rates) { 1115 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1116 sband, params->supported_rates, 1117 params->supported_rates_len, 1118 &sta->sta.supp_rates[band]); 1119 } 1120 1121 if (params->ht_capa) 1122 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1123 params->ht_capa, sta); 1124 1125 if (params->vht_capa) 1126 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1127 params->vht_capa, sta); 1128 1129 if (params->opmode_notif_used) { 1130 /* returned value is only needed for rc update, but the 1131 * rc isn't initialized here yet, so ignore it 1132 */ 1133 __ieee80211_vht_handle_opmode(sdata, sta, 1134 params->opmode_notif, 1135 band, false); 1136 } 1137 1138 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1139 #ifdef CONFIG_MAC80211_MESH 1140 u32 changed = 0; 1141 1142 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1143 switch (params->plink_state) { 1144 case NL80211_PLINK_ESTAB: 1145 if (sta->plink_state != NL80211_PLINK_ESTAB) 1146 changed = mesh_plink_inc_estab_count( 1147 sdata); 1148 sta->plink_state = params->plink_state; 1149 1150 ieee80211_mps_sta_status_update(sta); 1151 changed |= ieee80211_mps_set_sta_local_pm(sta, 1152 sdata->u.mesh.mshcfg.power_mode); 1153 break; 1154 case NL80211_PLINK_LISTEN: 1155 case NL80211_PLINK_BLOCKED: 1156 case NL80211_PLINK_OPN_SNT: 1157 case NL80211_PLINK_OPN_RCVD: 1158 case NL80211_PLINK_CNF_RCVD: 1159 case NL80211_PLINK_HOLDING: 1160 if (sta->plink_state == NL80211_PLINK_ESTAB) 1161 changed = mesh_plink_dec_estab_count( 1162 sdata); 1163 sta->plink_state = params->plink_state; 1164 1165 ieee80211_mps_sta_status_update(sta); 1166 changed |= ieee80211_mps_set_sta_local_pm(sta, 1167 NL80211_MESH_POWER_UNKNOWN); 1168 break; 1169 default: 1170 /* nothing */ 1171 break; 1172 } 1173 } 1174 1175 switch (params->plink_action) { 1176 case NL80211_PLINK_ACTION_NO_ACTION: 1177 /* nothing */ 1178 break; 1179 case NL80211_PLINK_ACTION_OPEN: 1180 changed |= mesh_plink_open(sta); 1181 break; 1182 case NL80211_PLINK_ACTION_BLOCK: 1183 changed |= mesh_plink_block(sta); 1184 break; 1185 } 1186 1187 if (params->local_pm) 1188 changed |= 1189 ieee80211_mps_set_sta_local_pm(sta, 1190 params->local_pm); 1191 ieee80211_mbss_info_change_notify(sdata, changed); 1192 #endif 1193 } 1194 1195 /* set the STA state after all sta info from usermode has been set */ 1196 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1197 ret = sta_apply_auth_flags(local, sta, mask, set); 1198 if (ret) 1199 return ret; 1200 } 1201 1202 return 0; 1203 } 1204 1205 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1206 const u8 *mac, 1207 struct station_parameters *params) 1208 { 1209 struct ieee80211_local *local = wiphy_priv(wiphy); 1210 struct sta_info *sta; 1211 struct ieee80211_sub_if_data *sdata; 1212 int err; 1213 int layer2_update; 1214 1215 if (params->vlan) { 1216 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1217 1218 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1219 sdata->vif.type != NL80211_IFTYPE_AP) 1220 return -EINVAL; 1221 } else 1222 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1223 1224 if (ether_addr_equal(mac, sdata->vif.addr)) 1225 return -EINVAL; 1226 1227 if (is_multicast_ether_addr(mac)) 1228 return -EINVAL; 1229 1230 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1231 if (!sta) 1232 return -ENOMEM; 1233 1234 /* 1235 * defaults -- if userspace wants something else we'll 1236 * change it accordingly in sta_apply_parameters() 1237 */ 1238 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1239 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1240 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1241 } else { 1242 sta->sta.tdls = true; 1243 } 1244 1245 err = sta_apply_parameters(local, sta, params); 1246 if (err) { 1247 sta_info_free(local, sta); 1248 return err; 1249 } 1250 1251 /* 1252 * for TDLS, rate control should be initialized only when 1253 * rates are known and station is marked authorized 1254 */ 1255 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1256 rate_control_rate_init(sta); 1257 1258 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1259 sdata->vif.type == NL80211_IFTYPE_AP; 1260 1261 err = sta_info_insert_rcu(sta); 1262 if (err) { 1263 rcu_read_unlock(); 1264 return err; 1265 } 1266 1267 if (layer2_update) 1268 ieee80211_send_layer2_update(sta); 1269 1270 rcu_read_unlock(); 1271 1272 return 0; 1273 } 1274 1275 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1276 struct station_del_parameters *params) 1277 { 1278 struct ieee80211_sub_if_data *sdata; 1279 1280 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1281 1282 if (params->mac) 1283 return sta_info_destroy_addr_bss(sdata, params->mac); 1284 1285 sta_info_flush(sdata); 1286 return 0; 1287 } 1288 1289 static int ieee80211_change_station(struct wiphy *wiphy, 1290 struct net_device *dev, const u8 *mac, 1291 struct station_parameters *params) 1292 { 1293 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1294 struct ieee80211_local *local = wiphy_priv(wiphy); 1295 struct sta_info *sta; 1296 struct ieee80211_sub_if_data *vlansdata; 1297 enum cfg80211_station_type statype; 1298 int err; 1299 1300 mutex_lock(&local->sta_mtx); 1301 1302 sta = sta_info_get_bss(sdata, mac); 1303 if (!sta) { 1304 err = -ENOENT; 1305 goto out_err; 1306 } 1307 1308 switch (sdata->vif.type) { 1309 case NL80211_IFTYPE_MESH_POINT: 1310 if (sdata->u.mesh.user_mpm) 1311 statype = CFG80211_STA_MESH_PEER_USER; 1312 else 1313 statype = CFG80211_STA_MESH_PEER_KERNEL; 1314 break; 1315 case NL80211_IFTYPE_ADHOC: 1316 statype = CFG80211_STA_IBSS; 1317 break; 1318 case NL80211_IFTYPE_STATION: 1319 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1320 statype = CFG80211_STA_AP_STA; 1321 break; 1322 } 1323 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1324 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1325 else 1326 statype = CFG80211_STA_TDLS_PEER_SETUP; 1327 break; 1328 case NL80211_IFTYPE_AP: 1329 case NL80211_IFTYPE_AP_VLAN: 1330 statype = CFG80211_STA_AP_CLIENT; 1331 break; 1332 default: 1333 err = -EOPNOTSUPP; 1334 goto out_err; 1335 } 1336 1337 err = cfg80211_check_station_change(wiphy, params, statype); 1338 if (err) 1339 goto out_err; 1340 1341 if (params->vlan && params->vlan != sta->sdata->dev) { 1342 bool prev_4addr = false; 1343 bool new_4addr = false; 1344 1345 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1346 1347 if (params->vlan->ieee80211_ptr->use_4addr) { 1348 if (vlansdata->u.vlan.sta) { 1349 err = -EBUSY; 1350 goto out_err; 1351 } 1352 1353 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1354 new_4addr = true; 1355 } 1356 1357 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1358 sta->sdata->u.vlan.sta) { 1359 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1360 prev_4addr = true; 1361 } 1362 1363 sta->sdata = vlansdata; 1364 1365 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1366 prev_4addr != new_4addr) { 1367 if (new_4addr) 1368 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1369 else 1370 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1371 } 1372 1373 ieee80211_send_layer2_update(sta); 1374 } 1375 1376 err = sta_apply_parameters(local, sta, params); 1377 if (err) 1378 goto out_err; 1379 1380 /* When peer becomes authorized, init rate control as well */ 1381 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1382 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1383 rate_control_rate_init(sta); 1384 1385 mutex_unlock(&local->sta_mtx); 1386 1387 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1388 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1389 sta->known_smps_mode != sta->sdata->bss->req_smps && 1390 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1391 sta_info_tx_streams(sta) != 1) { 1392 ht_dbg(sta->sdata, 1393 "%pM just authorized and MIMO capable - update SMPS\n", 1394 sta->sta.addr); 1395 ieee80211_send_smps_action(sta->sdata, 1396 sta->sdata->bss->req_smps, 1397 sta->sta.addr, 1398 sta->sdata->vif.bss_conf.bssid); 1399 } 1400 1401 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1402 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1403 ieee80211_recalc_ps(local, -1); 1404 ieee80211_recalc_ps_vif(sdata); 1405 } 1406 1407 return 0; 1408 out_err: 1409 mutex_unlock(&local->sta_mtx); 1410 return err; 1411 } 1412 1413 #ifdef CONFIG_MAC80211_MESH 1414 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1415 const u8 *dst, const u8 *next_hop) 1416 { 1417 struct ieee80211_sub_if_data *sdata; 1418 struct mesh_path *mpath; 1419 struct sta_info *sta; 1420 1421 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1422 1423 rcu_read_lock(); 1424 sta = sta_info_get(sdata, next_hop); 1425 if (!sta) { 1426 rcu_read_unlock(); 1427 return -ENOENT; 1428 } 1429 1430 mpath = mesh_path_add(sdata, dst); 1431 if (IS_ERR(mpath)) { 1432 rcu_read_unlock(); 1433 return PTR_ERR(mpath); 1434 } 1435 1436 mesh_path_fix_nexthop(mpath, sta); 1437 1438 rcu_read_unlock(); 1439 return 0; 1440 } 1441 1442 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1443 const u8 *dst) 1444 { 1445 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1446 1447 if (dst) 1448 return mesh_path_del(sdata, dst); 1449 1450 mesh_path_flush_by_iface(sdata); 1451 return 0; 1452 } 1453 1454 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1455 const u8 *dst, const u8 *next_hop) 1456 { 1457 struct ieee80211_sub_if_data *sdata; 1458 struct mesh_path *mpath; 1459 struct sta_info *sta; 1460 1461 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1462 1463 rcu_read_lock(); 1464 1465 sta = sta_info_get(sdata, next_hop); 1466 if (!sta) { 1467 rcu_read_unlock(); 1468 return -ENOENT; 1469 } 1470 1471 mpath = mesh_path_lookup(sdata, dst); 1472 if (!mpath) { 1473 rcu_read_unlock(); 1474 return -ENOENT; 1475 } 1476 1477 mesh_path_fix_nexthop(mpath, sta); 1478 1479 rcu_read_unlock(); 1480 return 0; 1481 } 1482 1483 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1484 struct mpath_info *pinfo) 1485 { 1486 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1487 1488 if (next_hop_sta) 1489 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1490 else 1491 memset(next_hop, 0, ETH_ALEN); 1492 1493 memset(pinfo, 0, sizeof(*pinfo)); 1494 1495 pinfo->generation = mesh_paths_generation; 1496 1497 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1498 MPATH_INFO_SN | 1499 MPATH_INFO_METRIC | 1500 MPATH_INFO_EXPTIME | 1501 MPATH_INFO_DISCOVERY_TIMEOUT | 1502 MPATH_INFO_DISCOVERY_RETRIES | 1503 MPATH_INFO_FLAGS; 1504 1505 pinfo->frame_qlen = mpath->frame_queue.qlen; 1506 pinfo->sn = mpath->sn; 1507 pinfo->metric = mpath->metric; 1508 if (time_before(jiffies, mpath->exp_time)) 1509 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1510 pinfo->discovery_timeout = 1511 jiffies_to_msecs(mpath->discovery_timeout); 1512 pinfo->discovery_retries = mpath->discovery_retries; 1513 if (mpath->flags & MESH_PATH_ACTIVE) 1514 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1515 if (mpath->flags & MESH_PATH_RESOLVING) 1516 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1517 if (mpath->flags & MESH_PATH_SN_VALID) 1518 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1519 if (mpath->flags & MESH_PATH_FIXED) 1520 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1521 if (mpath->flags & MESH_PATH_RESOLVED) 1522 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1523 } 1524 1525 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1526 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1527 1528 { 1529 struct ieee80211_sub_if_data *sdata; 1530 struct mesh_path *mpath; 1531 1532 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1533 1534 rcu_read_lock(); 1535 mpath = mesh_path_lookup(sdata, dst); 1536 if (!mpath) { 1537 rcu_read_unlock(); 1538 return -ENOENT; 1539 } 1540 memcpy(dst, mpath->dst, ETH_ALEN); 1541 mpath_set_pinfo(mpath, next_hop, pinfo); 1542 rcu_read_unlock(); 1543 return 0; 1544 } 1545 1546 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1547 int idx, u8 *dst, u8 *next_hop, 1548 struct mpath_info *pinfo) 1549 { 1550 struct ieee80211_sub_if_data *sdata; 1551 struct mesh_path *mpath; 1552 1553 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1554 1555 rcu_read_lock(); 1556 mpath = mesh_path_lookup_by_idx(sdata, idx); 1557 if (!mpath) { 1558 rcu_read_unlock(); 1559 return -ENOENT; 1560 } 1561 memcpy(dst, mpath->dst, ETH_ALEN); 1562 mpath_set_pinfo(mpath, next_hop, pinfo); 1563 rcu_read_unlock(); 1564 return 0; 1565 } 1566 1567 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1568 struct mpath_info *pinfo) 1569 { 1570 memset(pinfo, 0, sizeof(*pinfo)); 1571 memcpy(mpp, mpath->mpp, ETH_ALEN); 1572 1573 pinfo->generation = mpp_paths_generation; 1574 } 1575 1576 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1577 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1578 1579 { 1580 struct ieee80211_sub_if_data *sdata; 1581 struct mesh_path *mpath; 1582 1583 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1584 1585 rcu_read_lock(); 1586 mpath = mpp_path_lookup(sdata, dst); 1587 if (!mpath) { 1588 rcu_read_unlock(); 1589 return -ENOENT; 1590 } 1591 memcpy(dst, mpath->dst, ETH_ALEN); 1592 mpp_set_pinfo(mpath, mpp, pinfo); 1593 rcu_read_unlock(); 1594 return 0; 1595 } 1596 1597 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1598 int idx, u8 *dst, u8 *mpp, 1599 struct mpath_info *pinfo) 1600 { 1601 struct ieee80211_sub_if_data *sdata; 1602 struct mesh_path *mpath; 1603 1604 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1605 1606 rcu_read_lock(); 1607 mpath = mpp_path_lookup_by_idx(sdata, idx); 1608 if (!mpath) { 1609 rcu_read_unlock(); 1610 return -ENOENT; 1611 } 1612 memcpy(dst, mpath->dst, ETH_ALEN); 1613 mpp_set_pinfo(mpath, mpp, pinfo); 1614 rcu_read_unlock(); 1615 return 0; 1616 } 1617 1618 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1619 struct net_device *dev, 1620 struct mesh_config *conf) 1621 { 1622 struct ieee80211_sub_if_data *sdata; 1623 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1624 1625 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1626 return 0; 1627 } 1628 1629 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1630 { 1631 return (mask >> (parm-1)) & 0x1; 1632 } 1633 1634 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1635 const struct mesh_setup *setup) 1636 { 1637 u8 *new_ie; 1638 const u8 *old_ie; 1639 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1640 struct ieee80211_sub_if_data, u.mesh); 1641 1642 /* allocate information elements */ 1643 new_ie = NULL; 1644 old_ie = ifmsh->ie; 1645 1646 if (setup->ie_len) { 1647 new_ie = kmemdup(setup->ie, setup->ie_len, 1648 GFP_KERNEL); 1649 if (!new_ie) 1650 return -ENOMEM; 1651 } 1652 ifmsh->ie_len = setup->ie_len; 1653 ifmsh->ie = new_ie; 1654 kfree(old_ie); 1655 1656 /* now copy the rest of the setup parameters */ 1657 ifmsh->mesh_id_len = setup->mesh_id_len; 1658 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1659 ifmsh->mesh_sp_id = setup->sync_method; 1660 ifmsh->mesh_pp_id = setup->path_sel_proto; 1661 ifmsh->mesh_pm_id = setup->path_metric; 1662 ifmsh->user_mpm = setup->user_mpm; 1663 ifmsh->mesh_auth_id = setup->auth_id; 1664 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1665 if (setup->is_authenticated) 1666 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1667 if (setup->is_secure) 1668 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1669 1670 /* mcast rate setting in Mesh Node */ 1671 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1672 sizeof(setup->mcast_rate)); 1673 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1674 1675 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1676 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1677 1678 return 0; 1679 } 1680 1681 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1682 struct net_device *dev, u32 mask, 1683 const struct mesh_config *nconf) 1684 { 1685 struct mesh_config *conf; 1686 struct ieee80211_sub_if_data *sdata; 1687 struct ieee80211_if_mesh *ifmsh; 1688 1689 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1690 ifmsh = &sdata->u.mesh; 1691 1692 /* Set the config options which we are interested in setting */ 1693 conf = &(sdata->u.mesh.mshcfg); 1694 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1695 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1696 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1697 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1698 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1699 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1700 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1701 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1702 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1703 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1704 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1705 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1706 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1707 conf->element_ttl = nconf->element_ttl; 1708 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1709 if (ifmsh->user_mpm) 1710 return -EBUSY; 1711 conf->auto_open_plinks = nconf->auto_open_plinks; 1712 } 1713 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1714 conf->dot11MeshNbrOffsetMaxNeighbor = 1715 nconf->dot11MeshNbrOffsetMaxNeighbor; 1716 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1717 conf->dot11MeshHWMPmaxPREQretries = 1718 nconf->dot11MeshHWMPmaxPREQretries; 1719 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1720 conf->path_refresh_time = nconf->path_refresh_time; 1721 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1722 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1724 conf->dot11MeshHWMPactivePathTimeout = 1725 nconf->dot11MeshHWMPactivePathTimeout; 1726 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1727 conf->dot11MeshHWMPpreqMinInterval = 1728 nconf->dot11MeshHWMPpreqMinInterval; 1729 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1730 conf->dot11MeshHWMPperrMinInterval = 1731 nconf->dot11MeshHWMPperrMinInterval; 1732 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1733 mask)) 1734 conf->dot11MeshHWMPnetDiameterTraversalTime = 1735 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1737 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1738 ieee80211_mesh_root_setup(ifmsh); 1739 } 1740 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1741 /* our current gate announcement implementation rides on root 1742 * announcements, so require this ifmsh to also be a root node 1743 * */ 1744 if (nconf->dot11MeshGateAnnouncementProtocol && 1745 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1746 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1747 ieee80211_mesh_root_setup(ifmsh); 1748 } 1749 conf->dot11MeshGateAnnouncementProtocol = 1750 nconf->dot11MeshGateAnnouncementProtocol; 1751 } 1752 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1753 conf->dot11MeshHWMPRannInterval = 1754 nconf->dot11MeshHWMPRannInterval; 1755 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1756 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1757 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1758 /* our RSSI threshold implementation is supported only for 1759 * devices that report signal in dBm. 1760 */ 1761 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1762 return -ENOTSUPP; 1763 conf->rssi_threshold = nconf->rssi_threshold; 1764 } 1765 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1766 conf->ht_opmode = nconf->ht_opmode; 1767 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1768 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1769 } 1770 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1771 conf->dot11MeshHWMPactivePathToRootTimeout = 1772 nconf->dot11MeshHWMPactivePathToRootTimeout; 1773 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1774 conf->dot11MeshHWMProotInterval = 1775 nconf->dot11MeshHWMProotInterval; 1776 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1777 conf->dot11MeshHWMPconfirmationInterval = 1778 nconf->dot11MeshHWMPconfirmationInterval; 1779 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1780 conf->power_mode = nconf->power_mode; 1781 ieee80211_mps_local_status_update(sdata); 1782 } 1783 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1784 conf->dot11MeshAwakeWindowDuration = 1785 nconf->dot11MeshAwakeWindowDuration; 1786 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1787 conf->plink_timeout = nconf->plink_timeout; 1788 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1789 return 0; 1790 } 1791 1792 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1793 const struct mesh_config *conf, 1794 const struct mesh_setup *setup) 1795 { 1796 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1797 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1798 int err; 1799 1800 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1801 err = copy_mesh_setup(ifmsh, setup); 1802 if (err) 1803 return err; 1804 1805 /* can mesh use other SMPS modes? */ 1806 sdata->smps_mode = IEEE80211_SMPS_OFF; 1807 sdata->needed_rx_chains = sdata->local->rx_chains; 1808 1809 mutex_lock(&sdata->local->mtx); 1810 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1811 IEEE80211_CHANCTX_SHARED); 1812 mutex_unlock(&sdata->local->mtx); 1813 if (err) 1814 return err; 1815 1816 return ieee80211_start_mesh(sdata); 1817 } 1818 1819 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1820 { 1821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1822 1823 ieee80211_stop_mesh(sdata); 1824 mutex_lock(&sdata->local->mtx); 1825 ieee80211_vif_release_channel(sdata); 1826 mutex_unlock(&sdata->local->mtx); 1827 1828 return 0; 1829 } 1830 #endif 1831 1832 static int ieee80211_change_bss(struct wiphy *wiphy, 1833 struct net_device *dev, 1834 struct bss_parameters *params) 1835 { 1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1837 enum ieee80211_band band; 1838 u32 changed = 0; 1839 1840 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1841 return -ENOENT; 1842 1843 band = ieee80211_get_sdata_band(sdata); 1844 1845 if (params->use_cts_prot >= 0) { 1846 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1847 changed |= BSS_CHANGED_ERP_CTS_PROT; 1848 } 1849 if (params->use_short_preamble >= 0) { 1850 sdata->vif.bss_conf.use_short_preamble = 1851 params->use_short_preamble; 1852 changed |= BSS_CHANGED_ERP_PREAMBLE; 1853 } 1854 1855 if (!sdata->vif.bss_conf.use_short_slot && 1856 band == IEEE80211_BAND_5GHZ) { 1857 sdata->vif.bss_conf.use_short_slot = true; 1858 changed |= BSS_CHANGED_ERP_SLOT; 1859 } 1860 1861 if (params->use_short_slot_time >= 0) { 1862 sdata->vif.bss_conf.use_short_slot = 1863 params->use_short_slot_time; 1864 changed |= BSS_CHANGED_ERP_SLOT; 1865 } 1866 1867 if (params->basic_rates) { 1868 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1869 wiphy->bands[band], 1870 params->basic_rates, 1871 params->basic_rates_len, 1872 &sdata->vif.bss_conf.basic_rates); 1873 changed |= BSS_CHANGED_BASIC_RATES; 1874 } 1875 1876 if (params->ap_isolate >= 0) { 1877 if (params->ap_isolate) 1878 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1879 else 1880 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1881 } 1882 1883 if (params->ht_opmode >= 0) { 1884 sdata->vif.bss_conf.ht_operation_mode = 1885 (u16) params->ht_opmode; 1886 changed |= BSS_CHANGED_HT; 1887 } 1888 1889 if (params->p2p_ctwindow >= 0) { 1890 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1891 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1892 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1893 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1894 changed |= BSS_CHANGED_P2P_PS; 1895 } 1896 1897 if (params->p2p_opp_ps > 0) { 1898 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1899 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1900 changed |= BSS_CHANGED_P2P_PS; 1901 } else if (params->p2p_opp_ps == 0) { 1902 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1903 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1904 changed |= BSS_CHANGED_P2P_PS; 1905 } 1906 1907 ieee80211_bss_info_change_notify(sdata, changed); 1908 1909 return 0; 1910 } 1911 1912 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1913 struct net_device *dev, 1914 struct ieee80211_txq_params *params) 1915 { 1916 struct ieee80211_local *local = wiphy_priv(wiphy); 1917 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1918 struct ieee80211_tx_queue_params p; 1919 1920 if (!local->ops->conf_tx) 1921 return -EOPNOTSUPP; 1922 1923 if (local->hw.queues < IEEE80211_NUM_ACS) 1924 return -EOPNOTSUPP; 1925 1926 memset(&p, 0, sizeof(p)); 1927 p.aifs = params->aifs; 1928 p.cw_max = params->cwmax; 1929 p.cw_min = params->cwmin; 1930 p.txop = params->txop; 1931 1932 /* 1933 * Setting tx queue params disables u-apsd because it's only 1934 * called in master mode. 1935 */ 1936 p.uapsd = false; 1937 1938 sdata->tx_conf[params->ac] = p; 1939 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1940 wiphy_debug(local->hw.wiphy, 1941 "failed to set TX queue parameters for AC %d\n", 1942 params->ac); 1943 return -EINVAL; 1944 } 1945 1946 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1947 1948 return 0; 1949 } 1950 1951 #ifdef CONFIG_PM 1952 static int ieee80211_suspend(struct wiphy *wiphy, 1953 struct cfg80211_wowlan *wowlan) 1954 { 1955 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1956 } 1957 1958 static int ieee80211_resume(struct wiphy *wiphy) 1959 { 1960 return __ieee80211_resume(wiphy_priv(wiphy)); 1961 } 1962 #else 1963 #define ieee80211_suspend NULL 1964 #define ieee80211_resume NULL 1965 #endif 1966 1967 static int ieee80211_scan(struct wiphy *wiphy, 1968 struct cfg80211_scan_request *req) 1969 { 1970 struct ieee80211_sub_if_data *sdata; 1971 1972 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1973 1974 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1975 case NL80211_IFTYPE_STATION: 1976 case NL80211_IFTYPE_ADHOC: 1977 case NL80211_IFTYPE_MESH_POINT: 1978 case NL80211_IFTYPE_P2P_CLIENT: 1979 case NL80211_IFTYPE_P2P_DEVICE: 1980 break; 1981 case NL80211_IFTYPE_P2P_GO: 1982 if (sdata->local->ops->hw_scan) 1983 break; 1984 /* 1985 * FIXME: implement NoA while scanning in software, 1986 * for now fall through to allow scanning only when 1987 * beaconing hasn't been configured yet 1988 */ 1989 case NL80211_IFTYPE_AP: 1990 /* 1991 * If the scan has been forced (and the driver supports 1992 * forcing), don't care about being beaconing already. 1993 * This will create problems to the attached stations (e.g. all 1994 * the frames sent while scanning on other channel will be 1995 * lost) 1996 */ 1997 if (sdata->u.ap.beacon && 1998 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 1999 !(req->flags & NL80211_SCAN_FLAG_AP))) 2000 return -EOPNOTSUPP; 2001 break; 2002 default: 2003 return -EOPNOTSUPP; 2004 } 2005 2006 return ieee80211_request_scan(sdata, req); 2007 } 2008 2009 static int 2010 ieee80211_sched_scan_start(struct wiphy *wiphy, 2011 struct net_device *dev, 2012 struct cfg80211_sched_scan_request *req) 2013 { 2014 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2015 2016 if (!sdata->local->ops->sched_scan_start) 2017 return -EOPNOTSUPP; 2018 2019 return ieee80211_request_sched_scan_start(sdata, req); 2020 } 2021 2022 static int 2023 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2024 { 2025 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2026 2027 if (!sdata->local->ops->sched_scan_stop) 2028 return -EOPNOTSUPP; 2029 2030 return ieee80211_request_sched_scan_stop(sdata); 2031 } 2032 2033 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2034 struct cfg80211_auth_request *req) 2035 { 2036 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2037 } 2038 2039 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2040 struct cfg80211_assoc_request *req) 2041 { 2042 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2043 } 2044 2045 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2046 struct cfg80211_deauth_request *req) 2047 { 2048 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2049 } 2050 2051 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2052 struct cfg80211_disassoc_request *req) 2053 { 2054 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2055 } 2056 2057 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2058 struct cfg80211_ibss_params *params) 2059 { 2060 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2061 } 2062 2063 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2064 { 2065 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2066 } 2067 2068 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2069 struct ocb_setup *setup) 2070 { 2071 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2072 } 2073 2074 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2075 { 2076 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2077 } 2078 2079 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2080 int rate[IEEE80211_NUM_BANDS]) 2081 { 2082 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2083 2084 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2085 sizeof(int) * IEEE80211_NUM_BANDS); 2086 2087 return 0; 2088 } 2089 2090 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2091 { 2092 struct ieee80211_local *local = wiphy_priv(wiphy); 2093 int err; 2094 2095 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2096 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2097 2098 if (err) 2099 return err; 2100 } 2101 2102 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2103 (changed & WIPHY_PARAM_DYN_ACK)) { 2104 s16 coverage_class; 2105 2106 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2107 wiphy->coverage_class : -1; 2108 err = drv_set_coverage_class(local, coverage_class); 2109 2110 if (err) 2111 return err; 2112 } 2113 2114 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2115 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2116 2117 if (err) 2118 return err; 2119 } 2120 2121 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2122 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2123 return -EINVAL; 2124 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2125 } 2126 if (changed & WIPHY_PARAM_RETRY_LONG) { 2127 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2128 return -EINVAL; 2129 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2130 } 2131 if (changed & 2132 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2133 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2134 2135 return 0; 2136 } 2137 2138 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2139 struct wireless_dev *wdev, 2140 enum nl80211_tx_power_setting type, int mbm) 2141 { 2142 struct ieee80211_local *local = wiphy_priv(wiphy); 2143 struct ieee80211_sub_if_data *sdata; 2144 enum nl80211_tx_power_setting txp_type = type; 2145 bool update_txp_type = false; 2146 2147 if (wdev) { 2148 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2149 2150 switch (type) { 2151 case NL80211_TX_POWER_AUTOMATIC: 2152 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2153 txp_type = NL80211_TX_POWER_LIMITED; 2154 break; 2155 case NL80211_TX_POWER_LIMITED: 2156 case NL80211_TX_POWER_FIXED: 2157 if (mbm < 0 || (mbm % 100)) 2158 return -EOPNOTSUPP; 2159 sdata->user_power_level = MBM_TO_DBM(mbm); 2160 break; 2161 } 2162 2163 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2164 update_txp_type = true; 2165 sdata->vif.bss_conf.txpower_type = txp_type; 2166 } 2167 2168 ieee80211_recalc_txpower(sdata, update_txp_type); 2169 2170 return 0; 2171 } 2172 2173 switch (type) { 2174 case NL80211_TX_POWER_AUTOMATIC: 2175 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2176 txp_type = NL80211_TX_POWER_LIMITED; 2177 break; 2178 case NL80211_TX_POWER_LIMITED: 2179 case NL80211_TX_POWER_FIXED: 2180 if (mbm < 0 || (mbm % 100)) 2181 return -EOPNOTSUPP; 2182 local->user_power_level = MBM_TO_DBM(mbm); 2183 break; 2184 } 2185 2186 mutex_lock(&local->iflist_mtx); 2187 list_for_each_entry(sdata, &local->interfaces, list) { 2188 sdata->user_power_level = local->user_power_level; 2189 if (txp_type != sdata->vif.bss_conf.txpower_type) 2190 update_txp_type = true; 2191 sdata->vif.bss_conf.txpower_type = txp_type; 2192 } 2193 list_for_each_entry(sdata, &local->interfaces, list) 2194 ieee80211_recalc_txpower(sdata, update_txp_type); 2195 mutex_unlock(&local->iflist_mtx); 2196 2197 return 0; 2198 } 2199 2200 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2201 struct wireless_dev *wdev, 2202 int *dbm) 2203 { 2204 struct ieee80211_local *local = wiphy_priv(wiphy); 2205 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2206 2207 if (local->ops->get_txpower) 2208 return drv_get_txpower(local, sdata, dbm); 2209 2210 if (!local->use_chanctx) 2211 *dbm = local->hw.conf.power_level; 2212 else 2213 *dbm = sdata->vif.bss_conf.txpower; 2214 2215 return 0; 2216 } 2217 2218 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2219 const u8 *addr) 2220 { 2221 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2222 2223 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2224 2225 return 0; 2226 } 2227 2228 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2229 { 2230 struct ieee80211_local *local = wiphy_priv(wiphy); 2231 2232 drv_rfkill_poll(local); 2233 } 2234 2235 #ifdef CONFIG_NL80211_TESTMODE 2236 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2237 struct wireless_dev *wdev, 2238 void *data, int len) 2239 { 2240 struct ieee80211_local *local = wiphy_priv(wiphy); 2241 struct ieee80211_vif *vif = NULL; 2242 2243 if (!local->ops->testmode_cmd) 2244 return -EOPNOTSUPP; 2245 2246 if (wdev) { 2247 struct ieee80211_sub_if_data *sdata; 2248 2249 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2250 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2251 vif = &sdata->vif; 2252 } 2253 2254 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2255 } 2256 2257 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2258 struct sk_buff *skb, 2259 struct netlink_callback *cb, 2260 void *data, int len) 2261 { 2262 struct ieee80211_local *local = wiphy_priv(wiphy); 2263 2264 if (!local->ops->testmode_dump) 2265 return -EOPNOTSUPP; 2266 2267 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2268 } 2269 #endif 2270 2271 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2272 enum ieee80211_smps_mode smps_mode) 2273 { 2274 struct sta_info *sta; 2275 enum ieee80211_smps_mode old_req; 2276 int i; 2277 2278 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2279 return -EINVAL; 2280 2281 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2282 return 0; 2283 2284 old_req = sdata->u.ap.req_smps; 2285 sdata->u.ap.req_smps = smps_mode; 2286 2287 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2288 if (old_req == smps_mode || 2289 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2290 return 0; 2291 2292 /* If no associated stations, there's no need to do anything */ 2293 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2294 sdata->smps_mode = smps_mode; 2295 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2296 return 0; 2297 } 2298 2299 ht_dbg(sdata, 2300 "SMSP %d requested in AP mode, sending Action frame to %d stations\n", 2301 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2302 2303 mutex_lock(&sdata->local->sta_mtx); 2304 for (i = 0; i < STA_HASH_SIZE; i++) { 2305 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], 2306 lockdep_is_held(&sdata->local->sta_mtx)); 2307 sta; 2308 sta = rcu_dereference_protected(sta->hnext, 2309 lockdep_is_held(&sdata->local->sta_mtx))) { 2310 /* 2311 * Only stations associated to our AP and 2312 * associated VLANs 2313 */ 2314 if (sta->sdata->bss != &sdata->u.ap) 2315 continue; 2316 2317 /* This station doesn't support MIMO - skip it */ 2318 if (sta_info_tx_streams(sta) == 1) 2319 continue; 2320 2321 /* 2322 * Don't wake up a STA just to send the action frame 2323 * unless we are getting more restrictive. 2324 */ 2325 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2326 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2327 smps_mode)) { 2328 ht_dbg(sdata, 2329 "Won't send SMPS to sleeping STA %pM\n", 2330 sta->sta.addr); 2331 continue; 2332 } 2333 2334 /* 2335 * If the STA is not authorized, wait until it gets 2336 * authorized and the action frame will be sent then. 2337 */ 2338 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2339 continue; 2340 2341 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2342 ieee80211_send_smps_action(sdata, smps_mode, 2343 sta->sta.addr, 2344 sdata->vif.bss_conf.bssid); 2345 } 2346 } 2347 mutex_unlock(&sdata->local->sta_mtx); 2348 2349 sdata->smps_mode = smps_mode; 2350 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2351 2352 return 0; 2353 } 2354 2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2356 enum ieee80211_smps_mode smps_mode) 2357 { 2358 const u8 *ap; 2359 enum ieee80211_smps_mode old_req; 2360 int err; 2361 2362 lockdep_assert_held(&sdata->wdev.mtx); 2363 2364 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2365 return -EINVAL; 2366 2367 old_req = sdata->u.mgd.req_smps; 2368 sdata->u.mgd.req_smps = smps_mode; 2369 2370 if (old_req == smps_mode && 2371 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2372 return 0; 2373 2374 /* 2375 * If not associated, or current association is not an HT 2376 * association, there's no need to do anything, just store 2377 * the new value until we associate. 2378 */ 2379 if (!sdata->u.mgd.associated || 2380 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2381 return 0; 2382 2383 ap = sdata->u.mgd.associated->bssid; 2384 2385 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2386 if (sdata->u.mgd.powersave) 2387 smps_mode = IEEE80211_SMPS_DYNAMIC; 2388 else 2389 smps_mode = IEEE80211_SMPS_OFF; 2390 } 2391 2392 /* send SM PS frame to AP */ 2393 err = ieee80211_send_smps_action(sdata, smps_mode, 2394 ap, ap); 2395 if (err) 2396 sdata->u.mgd.req_smps = old_req; 2397 2398 return err; 2399 } 2400 2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2402 bool enabled, int timeout) 2403 { 2404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2405 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2406 2407 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2408 return -EOPNOTSUPP; 2409 2410 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2411 return -EOPNOTSUPP; 2412 2413 if (enabled == sdata->u.mgd.powersave && 2414 timeout == local->dynamic_ps_forced_timeout) 2415 return 0; 2416 2417 sdata->u.mgd.powersave = enabled; 2418 local->dynamic_ps_forced_timeout = timeout; 2419 2420 /* no change, but if automatic follow powersave */ 2421 sdata_lock(sdata); 2422 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2423 sdata_unlock(sdata); 2424 2425 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2426 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2427 2428 ieee80211_recalc_ps(local, -1); 2429 ieee80211_recalc_ps_vif(sdata); 2430 2431 return 0; 2432 } 2433 2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2435 struct net_device *dev, 2436 s32 rssi_thold, u32 rssi_hyst) 2437 { 2438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2439 struct ieee80211_vif *vif = &sdata->vif; 2440 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2441 2442 if (rssi_thold == bss_conf->cqm_rssi_thold && 2443 rssi_hyst == bss_conf->cqm_rssi_hyst) 2444 return 0; 2445 2446 bss_conf->cqm_rssi_thold = rssi_thold; 2447 bss_conf->cqm_rssi_hyst = rssi_hyst; 2448 2449 /* tell the driver upon association, unless already associated */ 2450 if (sdata->u.mgd.associated && 2451 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2452 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2453 2454 return 0; 2455 } 2456 2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2458 struct net_device *dev, 2459 const u8 *addr, 2460 const struct cfg80211_bitrate_mask *mask) 2461 { 2462 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2463 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2464 int i, ret; 2465 2466 if (!ieee80211_sdata_running(sdata)) 2467 return -ENETDOWN; 2468 2469 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2470 ret = drv_set_bitrate_mask(local, sdata, mask); 2471 if (ret) 2472 return ret; 2473 } 2474 2475 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2476 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2477 int j; 2478 2479 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2480 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2481 sizeof(mask->control[i].ht_mcs)); 2482 2483 sdata->rc_has_mcs_mask[i] = false; 2484 if (!sband) 2485 continue; 2486 2487 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2488 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2489 sdata->rc_has_mcs_mask[i] = true; 2490 break; 2491 } 2492 } 2493 2494 return 0; 2495 } 2496 2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2498 struct ieee80211_roc_work *new_roc, 2499 struct ieee80211_roc_work *cur_roc) 2500 { 2501 unsigned long j = jiffies; 2502 unsigned long cur_roc_end = cur_roc->hw_start_time + 2503 msecs_to_jiffies(cur_roc->duration); 2504 struct ieee80211_roc_work *next_roc; 2505 int new_dur; 2506 2507 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2508 return false; 2509 2510 if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end)) 2511 return false; 2512 2513 ieee80211_handle_roc_started(new_roc); 2514 2515 new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j); 2516 2517 /* cur_roc is long enough - add new_roc to the dependents list. */ 2518 if (new_dur <= 0) { 2519 list_add_tail(&new_roc->list, &cur_roc->dependents); 2520 return true; 2521 } 2522 2523 new_roc->duration = new_dur; 2524 2525 /* 2526 * if cur_roc was already coalesced before, we might 2527 * want to extend the next roc instead of adding 2528 * a new one. 2529 */ 2530 next_roc = list_entry(cur_roc->list.next, 2531 struct ieee80211_roc_work, list); 2532 if (&next_roc->list != &local->roc_list && 2533 next_roc->chan == new_roc->chan && 2534 next_roc->sdata == new_roc->sdata && 2535 !WARN_ON(next_roc->started)) { 2536 list_add_tail(&new_roc->list, &next_roc->dependents); 2537 next_roc->duration = max(next_roc->duration, 2538 new_roc->duration); 2539 next_roc->type = max(next_roc->type, new_roc->type); 2540 return true; 2541 } 2542 2543 /* add right after cur_roc */ 2544 list_add(&new_roc->list, &cur_roc->list); 2545 2546 return true; 2547 } 2548 2549 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2550 struct ieee80211_sub_if_data *sdata, 2551 struct ieee80211_channel *channel, 2552 unsigned int duration, u64 *cookie, 2553 struct sk_buff *txskb, 2554 enum ieee80211_roc_type type) 2555 { 2556 struct ieee80211_roc_work *roc, *tmp; 2557 bool queued = false; 2558 int ret; 2559 2560 lockdep_assert_held(&local->mtx); 2561 2562 if (local->use_chanctx && !local->ops->remain_on_channel) 2563 return -EOPNOTSUPP; 2564 2565 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2566 if (!roc) 2567 return -ENOMEM; 2568 2569 /* 2570 * If the duration is zero, then the driver 2571 * wouldn't actually do anything. Set it to 2572 * 10 for now. 2573 * 2574 * TODO: cancel the off-channel operation 2575 * when we get the SKB's TX status and 2576 * the wait time was zero before. 2577 */ 2578 if (!duration) 2579 duration = 10; 2580 2581 roc->chan = channel; 2582 roc->duration = duration; 2583 roc->req_duration = duration; 2584 roc->frame = txskb; 2585 roc->type = type; 2586 roc->mgmt_tx_cookie = (unsigned long)txskb; 2587 roc->sdata = sdata; 2588 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2589 INIT_LIST_HEAD(&roc->dependents); 2590 2591 /* 2592 * cookie is either the roc cookie (for normal roc) 2593 * or the SKB (for mgmt TX) 2594 */ 2595 if (!txskb) { 2596 /* local->mtx protects this */ 2597 local->roc_cookie_counter++; 2598 roc->cookie = local->roc_cookie_counter; 2599 /* wow, you wrapped 64 bits ... more likely a bug */ 2600 if (WARN_ON(roc->cookie == 0)) { 2601 roc->cookie = 1; 2602 local->roc_cookie_counter++; 2603 } 2604 *cookie = roc->cookie; 2605 } else { 2606 *cookie = (unsigned long)txskb; 2607 } 2608 2609 /* if there's one pending or we're scanning, queue this one */ 2610 if (!list_empty(&local->roc_list) || 2611 local->scanning || ieee80211_is_radar_required(local)) 2612 goto out_check_combine; 2613 2614 /* if not HW assist, just queue & schedule work */ 2615 if (!local->ops->remain_on_channel) { 2616 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2617 goto out_queue; 2618 } 2619 2620 /* otherwise actually kick it off here (for error handling) */ 2621 2622 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2623 if (ret) { 2624 kfree(roc); 2625 return ret; 2626 } 2627 2628 roc->started = true; 2629 goto out_queue; 2630 2631 out_check_combine: 2632 list_for_each_entry(tmp, &local->roc_list, list) { 2633 if (tmp->chan != channel || tmp->sdata != sdata) 2634 continue; 2635 2636 /* 2637 * Extend this ROC if possible: 2638 * 2639 * If it hasn't started yet, just increase the duration 2640 * and add the new one to the list of dependents. 2641 * If the type of the new ROC has higher priority, modify the 2642 * type of the previous one to match that of the new one. 2643 */ 2644 if (!tmp->started) { 2645 list_add_tail(&roc->list, &tmp->dependents); 2646 tmp->duration = max(tmp->duration, roc->duration); 2647 tmp->type = max(tmp->type, roc->type); 2648 queued = true; 2649 break; 2650 } 2651 2652 /* If it has already started, it's more difficult ... */ 2653 if (local->ops->remain_on_channel) { 2654 /* 2655 * In the offloaded ROC case, if it hasn't begun, add 2656 * this new one to the dependent list to be handled 2657 * when the master one begins. If it has begun, 2658 * check that there's still a minimum time left and 2659 * if so, start this one, transmitting the frame, but 2660 * add it to the list directly after this one with 2661 * a reduced time so we'll ask the driver to execute 2662 * it right after finishing the previous one, in the 2663 * hope that it'll also be executed right afterwards, 2664 * effectively extending the old one. 2665 * If there's no minimum time left, just add it to the 2666 * normal list. 2667 * TODO: the ROC type is ignored here, assuming that it 2668 * is better to immediately use the current ROC. 2669 */ 2670 if (!tmp->hw_begun) { 2671 list_add_tail(&roc->list, &tmp->dependents); 2672 queued = true; 2673 break; 2674 } 2675 2676 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2677 queued = true; 2678 } else if (del_timer_sync(&tmp->work.timer)) { 2679 unsigned long new_end; 2680 2681 /* 2682 * In the software ROC case, cancel the timer, if 2683 * that fails then the finish work is already 2684 * queued/pending and thus we queue the new ROC 2685 * normally, if that succeeds then we can extend 2686 * the timer duration and TX the frame (if any.) 2687 */ 2688 2689 list_add_tail(&roc->list, &tmp->dependents); 2690 queued = true; 2691 2692 new_end = jiffies + msecs_to_jiffies(roc->duration); 2693 2694 /* ok, it was started & we canceled timer */ 2695 if (time_after(new_end, tmp->work.timer.expires)) 2696 mod_timer(&tmp->work.timer, new_end); 2697 else 2698 add_timer(&tmp->work.timer); 2699 2700 ieee80211_handle_roc_started(roc); 2701 } 2702 break; 2703 } 2704 2705 out_queue: 2706 if (!queued) 2707 list_add_tail(&roc->list, &local->roc_list); 2708 2709 return 0; 2710 } 2711 2712 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2713 struct wireless_dev *wdev, 2714 struct ieee80211_channel *chan, 2715 unsigned int duration, 2716 u64 *cookie) 2717 { 2718 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2719 struct ieee80211_local *local = sdata->local; 2720 int ret; 2721 2722 mutex_lock(&local->mtx); 2723 ret = ieee80211_start_roc_work(local, sdata, chan, 2724 duration, cookie, NULL, 2725 IEEE80211_ROC_TYPE_NORMAL); 2726 mutex_unlock(&local->mtx); 2727 2728 return ret; 2729 } 2730 2731 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2732 u64 cookie, bool mgmt_tx) 2733 { 2734 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2735 int ret; 2736 2737 mutex_lock(&local->mtx); 2738 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2739 struct ieee80211_roc_work *dep, *tmp2; 2740 2741 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2742 if (!mgmt_tx && dep->cookie != cookie) 2743 continue; 2744 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2745 continue; 2746 /* found dependent item -- just remove it */ 2747 list_del(&dep->list); 2748 mutex_unlock(&local->mtx); 2749 2750 ieee80211_roc_notify_destroy(dep, true); 2751 return 0; 2752 } 2753 2754 if (!mgmt_tx && roc->cookie != cookie) 2755 continue; 2756 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2757 continue; 2758 2759 found = roc; 2760 break; 2761 } 2762 2763 if (!found) { 2764 mutex_unlock(&local->mtx); 2765 return -ENOENT; 2766 } 2767 2768 /* 2769 * We found the item to cancel, so do that. Note that it 2770 * may have dependents, which we also cancel (and send 2771 * the expired signal for.) Not doing so would be quite 2772 * tricky here, but we may need to fix it later. 2773 */ 2774 2775 if (local->ops->remain_on_channel) { 2776 if (found->started) { 2777 ret = drv_cancel_remain_on_channel(local); 2778 if (WARN_ON_ONCE(ret)) { 2779 mutex_unlock(&local->mtx); 2780 return ret; 2781 } 2782 } 2783 2784 list_del(&found->list); 2785 2786 if (found->started) 2787 ieee80211_start_next_roc(local); 2788 mutex_unlock(&local->mtx); 2789 2790 ieee80211_roc_notify_destroy(found, true); 2791 } else { 2792 /* work may be pending so use it all the time */ 2793 found->abort = true; 2794 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2795 2796 mutex_unlock(&local->mtx); 2797 2798 /* work will clean up etc */ 2799 flush_delayed_work(&found->work); 2800 WARN_ON(!found->to_be_freed); 2801 kfree(found); 2802 } 2803 2804 return 0; 2805 } 2806 2807 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2808 struct wireless_dev *wdev, 2809 u64 cookie) 2810 { 2811 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2812 struct ieee80211_local *local = sdata->local; 2813 2814 return ieee80211_cancel_roc(local, cookie, false); 2815 } 2816 2817 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2818 struct net_device *dev, 2819 struct cfg80211_chan_def *chandef, 2820 u32 cac_time_ms) 2821 { 2822 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2823 struct ieee80211_local *local = sdata->local; 2824 int err; 2825 2826 mutex_lock(&local->mtx); 2827 if (!list_empty(&local->roc_list) || local->scanning) { 2828 err = -EBUSY; 2829 goto out_unlock; 2830 } 2831 2832 /* whatever, but channel contexts should not complain about that one */ 2833 sdata->smps_mode = IEEE80211_SMPS_OFF; 2834 sdata->needed_rx_chains = local->rx_chains; 2835 2836 err = ieee80211_vif_use_channel(sdata, chandef, 2837 IEEE80211_CHANCTX_SHARED); 2838 if (err) 2839 goto out_unlock; 2840 2841 ieee80211_queue_delayed_work(&sdata->local->hw, 2842 &sdata->dfs_cac_timer_work, 2843 msecs_to_jiffies(cac_time_ms)); 2844 2845 out_unlock: 2846 mutex_unlock(&local->mtx); 2847 return err; 2848 } 2849 2850 static struct cfg80211_beacon_data * 2851 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2852 { 2853 struct cfg80211_beacon_data *new_beacon; 2854 u8 *pos; 2855 int len; 2856 2857 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2858 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2859 beacon->probe_resp_len; 2860 2861 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2862 if (!new_beacon) 2863 return NULL; 2864 2865 pos = (u8 *)(new_beacon + 1); 2866 if (beacon->head_len) { 2867 new_beacon->head_len = beacon->head_len; 2868 new_beacon->head = pos; 2869 memcpy(pos, beacon->head, beacon->head_len); 2870 pos += beacon->head_len; 2871 } 2872 if (beacon->tail_len) { 2873 new_beacon->tail_len = beacon->tail_len; 2874 new_beacon->tail = pos; 2875 memcpy(pos, beacon->tail, beacon->tail_len); 2876 pos += beacon->tail_len; 2877 } 2878 if (beacon->beacon_ies_len) { 2879 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2880 new_beacon->beacon_ies = pos; 2881 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2882 pos += beacon->beacon_ies_len; 2883 } 2884 if (beacon->proberesp_ies_len) { 2885 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2886 new_beacon->proberesp_ies = pos; 2887 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2888 pos += beacon->proberesp_ies_len; 2889 } 2890 if (beacon->assocresp_ies_len) { 2891 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2892 new_beacon->assocresp_ies = pos; 2893 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2894 pos += beacon->assocresp_ies_len; 2895 } 2896 if (beacon->probe_resp_len) { 2897 new_beacon->probe_resp_len = beacon->probe_resp_len; 2898 beacon->probe_resp = pos; 2899 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2900 pos += beacon->probe_resp_len; 2901 } 2902 2903 return new_beacon; 2904 } 2905 2906 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2907 { 2908 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2909 2910 ieee80211_queue_work(&sdata->local->hw, 2911 &sdata->csa_finalize_work); 2912 } 2913 EXPORT_SYMBOL(ieee80211_csa_finish); 2914 2915 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2916 u32 *changed) 2917 { 2918 int err; 2919 2920 switch (sdata->vif.type) { 2921 case NL80211_IFTYPE_AP: 2922 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2923 NULL); 2924 kfree(sdata->u.ap.next_beacon); 2925 sdata->u.ap.next_beacon = NULL; 2926 2927 if (err < 0) 2928 return err; 2929 *changed |= err; 2930 break; 2931 case NL80211_IFTYPE_ADHOC: 2932 err = ieee80211_ibss_finish_csa(sdata); 2933 if (err < 0) 2934 return err; 2935 *changed |= err; 2936 break; 2937 #ifdef CONFIG_MAC80211_MESH 2938 case NL80211_IFTYPE_MESH_POINT: 2939 err = ieee80211_mesh_finish_csa(sdata); 2940 if (err < 0) 2941 return err; 2942 *changed |= err; 2943 break; 2944 #endif 2945 default: 2946 WARN_ON(1); 2947 return -EINVAL; 2948 } 2949 2950 return 0; 2951 } 2952 2953 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2954 { 2955 struct ieee80211_local *local = sdata->local; 2956 u32 changed = 0; 2957 int err; 2958 2959 sdata_assert_lock(sdata); 2960 lockdep_assert_held(&local->mtx); 2961 lockdep_assert_held(&local->chanctx_mtx); 2962 2963 /* 2964 * using reservation isn't immediate as it may be deferred until later 2965 * with multi-vif. once reservation is complete it will re-schedule the 2966 * work with no reserved_chanctx so verify chandef to check if it 2967 * completed successfully 2968 */ 2969 2970 if (sdata->reserved_chanctx) { 2971 /* 2972 * with multi-vif csa driver may call ieee80211_csa_finish() 2973 * many times while waiting for other interfaces to use their 2974 * reservations 2975 */ 2976 if (sdata->reserved_ready) 2977 return 0; 2978 2979 return ieee80211_vif_use_reserved_context(sdata); 2980 } 2981 2982 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2983 &sdata->csa_chandef)) 2984 return -EINVAL; 2985 2986 sdata->vif.csa_active = false; 2987 2988 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2989 if (err) 2990 return err; 2991 2992 ieee80211_bss_info_change_notify(sdata, changed); 2993 2994 if (sdata->csa_block_tx) { 2995 ieee80211_wake_vif_queues(local, sdata, 2996 IEEE80211_QUEUE_STOP_REASON_CSA); 2997 sdata->csa_block_tx = false; 2998 } 2999 3000 err = drv_post_channel_switch(sdata); 3001 if (err) 3002 return err; 3003 3004 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3005 3006 return 0; 3007 } 3008 3009 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3010 { 3011 if (__ieee80211_csa_finalize(sdata)) { 3012 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3013 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3014 GFP_KERNEL); 3015 } 3016 } 3017 3018 void ieee80211_csa_finalize_work(struct work_struct *work) 3019 { 3020 struct ieee80211_sub_if_data *sdata = 3021 container_of(work, struct ieee80211_sub_if_data, 3022 csa_finalize_work); 3023 struct ieee80211_local *local = sdata->local; 3024 3025 sdata_lock(sdata); 3026 mutex_lock(&local->mtx); 3027 mutex_lock(&local->chanctx_mtx); 3028 3029 /* AP might have been stopped while waiting for the lock. */ 3030 if (!sdata->vif.csa_active) 3031 goto unlock; 3032 3033 if (!ieee80211_sdata_running(sdata)) 3034 goto unlock; 3035 3036 ieee80211_csa_finalize(sdata); 3037 3038 unlock: 3039 mutex_unlock(&local->chanctx_mtx); 3040 mutex_unlock(&local->mtx); 3041 sdata_unlock(sdata); 3042 } 3043 3044 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3045 struct cfg80211_csa_settings *params, 3046 u32 *changed) 3047 { 3048 struct ieee80211_csa_settings csa = {}; 3049 int err; 3050 3051 switch (sdata->vif.type) { 3052 case NL80211_IFTYPE_AP: 3053 sdata->u.ap.next_beacon = 3054 cfg80211_beacon_dup(¶ms->beacon_after); 3055 if (!sdata->u.ap.next_beacon) 3056 return -ENOMEM; 3057 3058 /* 3059 * With a count of 0, we don't have to wait for any 3060 * TBTT before switching, so complete the CSA 3061 * immediately. In theory, with a count == 1 we 3062 * should delay the switch until just before the next 3063 * TBTT, but that would complicate things so we switch 3064 * immediately too. If we would delay the switch 3065 * until the next TBTT, we would have to set the probe 3066 * response here. 3067 * 3068 * TODO: A channel switch with count <= 1 without 3069 * sending a CSA action frame is kind of useless, 3070 * because the clients won't know we're changing 3071 * channels. The action frame must be implemented 3072 * either here or in the userspace. 3073 */ 3074 if (params->count <= 1) 3075 break; 3076 3077 if ((params->n_counter_offsets_beacon > 3078 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3079 (params->n_counter_offsets_presp > 3080 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3081 return -EINVAL; 3082 3083 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3084 csa.counter_offsets_presp = params->counter_offsets_presp; 3085 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3086 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3087 csa.count = params->count; 3088 3089 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3090 if (err < 0) { 3091 kfree(sdata->u.ap.next_beacon); 3092 return err; 3093 } 3094 *changed |= err; 3095 3096 break; 3097 case NL80211_IFTYPE_ADHOC: 3098 if (!sdata->vif.bss_conf.ibss_joined) 3099 return -EINVAL; 3100 3101 if (params->chandef.width != sdata->u.ibss.chandef.width) 3102 return -EINVAL; 3103 3104 switch (params->chandef.width) { 3105 case NL80211_CHAN_WIDTH_40: 3106 if (cfg80211_get_chandef_type(¶ms->chandef) != 3107 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3108 return -EINVAL; 3109 case NL80211_CHAN_WIDTH_5: 3110 case NL80211_CHAN_WIDTH_10: 3111 case NL80211_CHAN_WIDTH_20_NOHT: 3112 case NL80211_CHAN_WIDTH_20: 3113 break; 3114 default: 3115 return -EINVAL; 3116 } 3117 3118 /* changes into another band are not supported */ 3119 if (sdata->u.ibss.chandef.chan->band != 3120 params->chandef.chan->band) 3121 return -EINVAL; 3122 3123 /* see comments in the NL80211_IFTYPE_AP block */ 3124 if (params->count > 1) { 3125 err = ieee80211_ibss_csa_beacon(sdata, params); 3126 if (err < 0) 3127 return err; 3128 *changed |= err; 3129 } 3130 3131 ieee80211_send_action_csa(sdata, params); 3132 3133 break; 3134 #ifdef CONFIG_MAC80211_MESH 3135 case NL80211_IFTYPE_MESH_POINT: { 3136 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3137 3138 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3139 return -EINVAL; 3140 3141 /* changes into another band are not supported */ 3142 if (sdata->vif.bss_conf.chandef.chan->band != 3143 params->chandef.chan->band) 3144 return -EINVAL; 3145 3146 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3147 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3148 if (!ifmsh->pre_value) 3149 ifmsh->pre_value = 1; 3150 else 3151 ifmsh->pre_value++; 3152 } 3153 3154 /* see comments in the NL80211_IFTYPE_AP block */ 3155 if (params->count > 1) { 3156 err = ieee80211_mesh_csa_beacon(sdata, params); 3157 if (err < 0) { 3158 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3159 return err; 3160 } 3161 *changed |= err; 3162 } 3163 3164 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3165 ieee80211_send_action_csa(sdata, params); 3166 3167 break; 3168 } 3169 #endif 3170 default: 3171 return -EOPNOTSUPP; 3172 } 3173 3174 return 0; 3175 } 3176 3177 static int 3178 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3179 struct cfg80211_csa_settings *params) 3180 { 3181 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3182 struct ieee80211_local *local = sdata->local; 3183 struct ieee80211_channel_switch ch_switch; 3184 struct ieee80211_chanctx_conf *conf; 3185 struct ieee80211_chanctx *chanctx; 3186 u32 changed = 0; 3187 int err; 3188 3189 sdata_assert_lock(sdata); 3190 lockdep_assert_held(&local->mtx); 3191 3192 if (!list_empty(&local->roc_list) || local->scanning) 3193 return -EBUSY; 3194 3195 if (sdata->wdev.cac_started) 3196 return -EBUSY; 3197 3198 if (cfg80211_chandef_identical(¶ms->chandef, 3199 &sdata->vif.bss_conf.chandef)) 3200 return -EINVAL; 3201 3202 /* don't allow another channel switch if one is already active. */ 3203 if (sdata->vif.csa_active) 3204 return -EBUSY; 3205 3206 mutex_lock(&local->chanctx_mtx); 3207 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3208 lockdep_is_held(&local->chanctx_mtx)); 3209 if (!conf) { 3210 err = -EBUSY; 3211 goto out; 3212 } 3213 3214 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3215 if (!chanctx) { 3216 err = -EBUSY; 3217 goto out; 3218 } 3219 3220 ch_switch.timestamp = 0; 3221 ch_switch.device_timestamp = 0; 3222 ch_switch.block_tx = params->block_tx; 3223 ch_switch.chandef = params->chandef; 3224 ch_switch.count = params->count; 3225 3226 err = drv_pre_channel_switch(sdata, &ch_switch); 3227 if (err) 3228 goto out; 3229 3230 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3231 chanctx->mode, 3232 params->radar_required); 3233 if (err) 3234 goto out; 3235 3236 /* if reservation is invalid then this will fail */ 3237 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3238 if (err) { 3239 ieee80211_vif_unreserve_chanctx(sdata); 3240 goto out; 3241 } 3242 3243 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3244 if (err) { 3245 ieee80211_vif_unreserve_chanctx(sdata); 3246 goto out; 3247 } 3248 3249 sdata->csa_chandef = params->chandef; 3250 sdata->csa_block_tx = params->block_tx; 3251 sdata->vif.csa_active = true; 3252 3253 if (sdata->csa_block_tx) 3254 ieee80211_stop_vif_queues(local, sdata, 3255 IEEE80211_QUEUE_STOP_REASON_CSA); 3256 3257 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3258 params->count); 3259 3260 if (changed) { 3261 ieee80211_bss_info_change_notify(sdata, changed); 3262 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3263 } else { 3264 /* if the beacon didn't change, we can finalize immediately */ 3265 ieee80211_csa_finalize(sdata); 3266 } 3267 3268 out: 3269 mutex_unlock(&local->chanctx_mtx); 3270 return err; 3271 } 3272 3273 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3274 struct cfg80211_csa_settings *params) 3275 { 3276 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3277 struct ieee80211_local *local = sdata->local; 3278 int err; 3279 3280 mutex_lock(&local->mtx); 3281 err = __ieee80211_channel_switch(wiphy, dev, params); 3282 mutex_unlock(&local->mtx); 3283 3284 return err; 3285 } 3286 3287 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3288 struct cfg80211_mgmt_tx_params *params, 3289 u64 *cookie) 3290 { 3291 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3292 struct ieee80211_local *local = sdata->local; 3293 struct sk_buff *skb; 3294 struct sta_info *sta; 3295 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3296 bool need_offchan = false; 3297 u32 flags; 3298 int ret; 3299 u8 *data; 3300 3301 if (params->dont_wait_for_ack) 3302 flags = IEEE80211_TX_CTL_NO_ACK; 3303 else 3304 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3305 IEEE80211_TX_CTL_REQ_TX_STATUS; 3306 3307 if (params->no_cck) 3308 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3309 3310 switch (sdata->vif.type) { 3311 case NL80211_IFTYPE_ADHOC: 3312 if (!sdata->vif.bss_conf.ibss_joined) 3313 need_offchan = true; 3314 /* fall through */ 3315 #ifdef CONFIG_MAC80211_MESH 3316 case NL80211_IFTYPE_MESH_POINT: 3317 if (ieee80211_vif_is_mesh(&sdata->vif) && 3318 !sdata->u.mesh.mesh_id_len) 3319 need_offchan = true; 3320 /* fall through */ 3321 #endif 3322 case NL80211_IFTYPE_AP: 3323 case NL80211_IFTYPE_AP_VLAN: 3324 case NL80211_IFTYPE_P2P_GO: 3325 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3326 !ieee80211_vif_is_mesh(&sdata->vif) && 3327 !rcu_access_pointer(sdata->bss->beacon)) 3328 need_offchan = true; 3329 if (!ieee80211_is_action(mgmt->frame_control) || 3330 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3331 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3332 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3333 break; 3334 rcu_read_lock(); 3335 sta = sta_info_get(sdata, mgmt->da); 3336 rcu_read_unlock(); 3337 if (!sta) 3338 return -ENOLINK; 3339 break; 3340 case NL80211_IFTYPE_STATION: 3341 case NL80211_IFTYPE_P2P_CLIENT: 3342 if (!sdata->u.mgd.associated) 3343 need_offchan = true; 3344 break; 3345 case NL80211_IFTYPE_P2P_DEVICE: 3346 need_offchan = true; 3347 break; 3348 default: 3349 return -EOPNOTSUPP; 3350 } 3351 3352 /* configurations requiring offchan cannot work if no channel has been 3353 * specified 3354 */ 3355 if (need_offchan && !params->chan) 3356 return -EINVAL; 3357 3358 mutex_lock(&local->mtx); 3359 3360 /* Check if the operating channel is the requested channel */ 3361 if (!need_offchan) { 3362 struct ieee80211_chanctx_conf *chanctx_conf; 3363 3364 rcu_read_lock(); 3365 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3366 3367 if (chanctx_conf) { 3368 need_offchan = params->chan && 3369 (params->chan != 3370 chanctx_conf->def.chan); 3371 } else if (!params->chan) { 3372 ret = -EINVAL; 3373 rcu_read_unlock(); 3374 goto out_unlock; 3375 } else { 3376 need_offchan = true; 3377 } 3378 rcu_read_unlock(); 3379 } 3380 3381 if (need_offchan && !params->offchan) { 3382 ret = -EBUSY; 3383 goto out_unlock; 3384 } 3385 3386 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3387 if (!skb) { 3388 ret = -ENOMEM; 3389 goto out_unlock; 3390 } 3391 skb_reserve(skb, local->hw.extra_tx_headroom); 3392 3393 data = skb_put(skb, params->len); 3394 memcpy(data, params->buf, params->len); 3395 3396 /* Update CSA counters */ 3397 if (sdata->vif.csa_active && 3398 (sdata->vif.type == NL80211_IFTYPE_AP || 3399 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3400 params->n_csa_offsets) { 3401 int i; 3402 struct beacon_data *beacon = NULL; 3403 3404 rcu_read_lock(); 3405 3406 if (sdata->vif.type == NL80211_IFTYPE_AP) 3407 beacon = rcu_dereference(sdata->u.ap.beacon); 3408 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3409 beacon = rcu_dereference(sdata->u.ibss.presp); 3410 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3411 beacon = rcu_dereference(sdata->u.mesh.beacon); 3412 3413 if (beacon) 3414 for (i = 0; i < params->n_csa_offsets; i++) 3415 data[params->csa_offsets[i]] = 3416 beacon->csa_current_counter; 3417 3418 rcu_read_unlock(); 3419 } 3420 3421 IEEE80211_SKB_CB(skb)->flags = flags; 3422 3423 skb->dev = sdata->dev; 3424 3425 if (!need_offchan) { 3426 *cookie = (unsigned long) skb; 3427 ieee80211_tx_skb(sdata, skb); 3428 ret = 0; 3429 goto out_unlock; 3430 } 3431 3432 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3433 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3434 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3435 IEEE80211_SKB_CB(skb)->hw_queue = 3436 local->hw.offchannel_tx_hw_queue; 3437 3438 /* This will handle all kinds of coalescing and immediate TX */ 3439 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3440 params->wait, cookie, skb, 3441 IEEE80211_ROC_TYPE_MGMT_TX); 3442 if (ret) 3443 kfree_skb(skb); 3444 out_unlock: 3445 mutex_unlock(&local->mtx); 3446 return ret; 3447 } 3448 3449 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3450 struct wireless_dev *wdev, 3451 u64 cookie) 3452 { 3453 struct ieee80211_local *local = wiphy_priv(wiphy); 3454 3455 return ieee80211_cancel_roc(local, cookie, true); 3456 } 3457 3458 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3459 struct wireless_dev *wdev, 3460 u16 frame_type, bool reg) 3461 { 3462 struct ieee80211_local *local = wiphy_priv(wiphy); 3463 3464 switch (frame_type) { 3465 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3466 if (reg) 3467 local->probe_req_reg++; 3468 else 3469 local->probe_req_reg--; 3470 3471 if (!local->open_count) 3472 break; 3473 3474 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3475 break; 3476 default: 3477 break; 3478 } 3479 } 3480 3481 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3482 { 3483 struct ieee80211_local *local = wiphy_priv(wiphy); 3484 3485 if (local->started) 3486 return -EOPNOTSUPP; 3487 3488 return drv_set_antenna(local, tx_ant, rx_ant); 3489 } 3490 3491 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3492 { 3493 struct ieee80211_local *local = wiphy_priv(wiphy); 3494 3495 return drv_get_antenna(local, tx_ant, rx_ant); 3496 } 3497 3498 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3499 struct net_device *dev, 3500 struct cfg80211_gtk_rekey_data *data) 3501 { 3502 struct ieee80211_local *local = wiphy_priv(wiphy); 3503 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3504 3505 if (!local->ops->set_rekey_data) 3506 return -EOPNOTSUPP; 3507 3508 drv_set_rekey_data(local, sdata, data); 3509 3510 return 0; 3511 } 3512 3513 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3514 const u8 *peer, u64 *cookie) 3515 { 3516 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3517 struct ieee80211_local *local = sdata->local; 3518 struct ieee80211_qos_hdr *nullfunc; 3519 struct sk_buff *skb; 3520 int size = sizeof(*nullfunc); 3521 __le16 fc; 3522 bool qos; 3523 struct ieee80211_tx_info *info; 3524 struct sta_info *sta; 3525 struct ieee80211_chanctx_conf *chanctx_conf; 3526 enum ieee80211_band band; 3527 3528 rcu_read_lock(); 3529 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3530 if (WARN_ON(!chanctx_conf)) { 3531 rcu_read_unlock(); 3532 return -EINVAL; 3533 } 3534 band = chanctx_conf->def.chan->band; 3535 sta = sta_info_get_bss(sdata, peer); 3536 if (sta) { 3537 qos = sta->sta.wme; 3538 } else { 3539 rcu_read_unlock(); 3540 return -ENOLINK; 3541 } 3542 3543 if (qos) { 3544 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3545 IEEE80211_STYPE_QOS_NULLFUNC | 3546 IEEE80211_FCTL_FROMDS); 3547 } else { 3548 size -= 2; 3549 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3550 IEEE80211_STYPE_NULLFUNC | 3551 IEEE80211_FCTL_FROMDS); 3552 } 3553 3554 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3555 if (!skb) { 3556 rcu_read_unlock(); 3557 return -ENOMEM; 3558 } 3559 3560 skb->dev = dev; 3561 3562 skb_reserve(skb, local->hw.extra_tx_headroom); 3563 3564 nullfunc = (void *) skb_put(skb, size); 3565 nullfunc->frame_control = fc; 3566 nullfunc->duration_id = 0; 3567 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3568 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3569 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3570 nullfunc->seq_ctrl = 0; 3571 3572 info = IEEE80211_SKB_CB(skb); 3573 3574 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3575 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3576 info->band = band; 3577 3578 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3579 skb->priority = 7; 3580 if (qos) 3581 nullfunc->qos_ctrl = cpu_to_le16(7); 3582 3583 local_bh_disable(); 3584 ieee80211_xmit(sdata, skb); 3585 local_bh_enable(); 3586 rcu_read_unlock(); 3587 3588 *cookie = (unsigned long) skb; 3589 return 0; 3590 } 3591 3592 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3593 struct wireless_dev *wdev, 3594 struct cfg80211_chan_def *chandef) 3595 { 3596 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3597 struct ieee80211_local *local = wiphy_priv(wiphy); 3598 struct ieee80211_chanctx_conf *chanctx_conf; 3599 int ret = -ENODATA; 3600 3601 rcu_read_lock(); 3602 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3603 if (chanctx_conf) { 3604 *chandef = sdata->vif.bss_conf.chandef; 3605 ret = 0; 3606 } else if (local->open_count > 0 && 3607 local->open_count == local->monitors && 3608 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3609 if (local->use_chanctx) 3610 *chandef = local->monitor_chandef; 3611 else 3612 *chandef = local->_oper_chandef; 3613 ret = 0; 3614 } 3615 rcu_read_unlock(); 3616 3617 return ret; 3618 } 3619 3620 #ifdef CONFIG_PM 3621 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3622 { 3623 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3624 } 3625 #endif 3626 3627 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3628 struct net_device *dev, 3629 struct cfg80211_qos_map *qos_map) 3630 { 3631 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3632 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3633 3634 if (qos_map) { 3635 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3636 if (!new_qos_map) 3637 return -ENOMEM; 3638 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3639 } else { 3640 /* A NULL qos_map was passed to disable QoS mapping */ 3641 new_qos_map = NULL; 3642 } 3643 3644 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3645 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3646 if (old_qos_map) 3647 kfree_rcu(old_qos_map, rcu_head); 3648 3649 return 0; 3650 } 3651 3652 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3653 struct net_device *dev, 3654 struct cfg80211_chan_def *chandef) 3655 { 3656 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3657 int ret; 3658 u32 changed = 0; 3659 3660 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3661 if (ret == 0) 3662 ieee80211_bss_info_change_notify(sdata, changed); 3663 3664 return ret; 3665 } 3666 3667 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3668 u8 tsid, const u8 *peer, u8 up, 3669 u16 admitted_time) 3670 { 3671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3672 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3673 int ac = ieee802_1d_to_ac[up]; 3674 3675 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3676 return -EOPNOTSUPP; 3677 3678 if (!(sdata->wmm_acm & BIT(up))) 3679 return -EINVAL; 3680 3681 if (ifmgd->tx_tspec[ac].admitted_time) 3682 return -EBUSY; 3683 3684 if (admitted_time) { 3685 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3686 ifmgd->tx_tspec[ac].tsid = tsid; 3687 ifmgd->tx_tspec[ac].up = up; 3688 } 3689 3690 return 0; 3691 } 3692 3693 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3694 u8 tsid, const u8 *peer) 3695 { 3696 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3697 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3698 struct ieee80211_local *local = wiphy_priv(wiphy); 3699 int ac; 3700 3701 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3702 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3703 3704 /* skip unused entries */ 3705 if (!tx_tspec->admitted_time) 3706 continue; 3707 3708 if (tx_tspec->tsid != tsid) 3709 continue; 3710 3711 /* due to this new packets will be reassigned to non-ACM ACs */ 3712 tx_tspec->up = -1; 3713 3714 /* Make sure that all packets have been sent to avoid to 3715 * restore the QoS params on packets that are still on the 3716 * queues. 3717 */ 3718 synchronize_net(); 3719 ieee80211_flush_queues(local, sdata, false); 3720 3721 /* restore the normal QoS parameters 3722 * (unconditionally to avoid races) 3723 */ 3724 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3725 tx_tspec->downgraded = false; 3726 ieee80211_sta_handle_tspec_ac_params(sdata); 3727 3728 /* finally clear all the data */ 3729 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3730 3731 return 0; 3732 } 3733 3734 return -ENOENT; 3735 } 3736 3737 const struct cfg80211_ops mac80211_config_ops = { 3738 .add_virtual_intf = ieee80211_add_iface, 3739 .del_virtual_intf = ieee80211_del_iface, 3740 .change_virtual_intf = ieee80211_change_iface, 3741 .start_p2p_device = ieee80211_start_p2p_device, 3742 .stop_p2p_device = ieee80211_stop_p2p_device, 3743 .add_key = ieee80211_add_key, 3744 .del_key = ieee80211_del_key, 3745 .get_key = ieee80211_get_key, 3746 .set_default_key = ieee80211_config_default_key, 3747 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3748 .start_ap = ieee80211_start_ap, 3749 .change_beacon = ieee80211_change_beacon, 3750 .stop_ap = ieee80211_stop_ap, 3751 .add_station = ieee80211_add_station, 3752 .del_station = ieee80211_del_station, 3753 .change_station = ieee80211_change_station, 3754 .get_station = ieee80211_get_station, 3755 .dump_station = ieee80211_dump_station, 3756 .dump_survey = ieee80211_dump_survey, 3757 #ifdef CONFIG_MAC80211_MESH 3758 .add_mpath = ieee80211_add_mpath, 3759 .del_mpath = ieee80211_del_mpath, 3760 .change_mpath = ieee80211_change_mpath, 3761 .get_mpath = ieee80211_get_mpath, 3762 .dump_mpath = ieee80211_dump_mpath, 3763 .get_mpp = ieee80211_get_mpp, 3764 .dump_mpp = ieee80211_dump_mpp, 3765 .update_mesh_config = ieee80211_update_mesh_config, 3766 .get_mesh_config = ieee80211_get_mesh_config, 3767 .join_mesh = ieee80211_join_mesh, 3768 .leave_mesh = ieee80211_leave_mesh, 3769 #endif 3770 .join_ocb = ieee80211_join_ocb, 3771 .leave_ocb = ieee80211_leave_ocb, 3772 .change_bss = ieee80211_change_bss, 3773 .set_txq_params = ieee80211_set_txq_params, 3774 .set_monitor_channel = ieee80211_set_monitor_channel, 3775 .suspend = ieee80211_suspend, 3776 .resume = ieee80211_resume, 3777 .scan = ieee80211_scan, 3778 .sched_scan_start = ieee80211_sched_scan_start, 3779 .sched_scan_stop = ieee80211_sched_scan_stop, 3780 .auth = ieee80211_auth, 3781 .assoc = ieee80211_assoc, 3782 .deauth = ieee80211_deauth, 3783 .disassoc = ieee80211_disassoc, 3784 .join_ibss = ieee80211_join_ibss, 3785 .leave_ibss = ieee80211_leave_ibss, 3786 .set_mcast_rate = ieee80211_set_mcast_rate, 3787 .set_wiphy_params = ieee80211_set_wiphy_params, 3788 .set_tx_power = ieee80211_set_tx_power, 3789 .get_tx_power = ieee80211_get_tx_power, 3790 .set_wds_peer = ieee80211_set_wds_peer, 3791 .rfkill_poll = ieee80211_rfkill_poll, 3792 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3793 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3794 .set_power_mgmt = ieee80211_set_power_mgmt, 3795 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3796 .remain_on_channel = ieee80211_remain_on_channel, 3797 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3798 .mgmt_tx = ieee80211_mgmt_tx, 3799 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3800 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3801 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3802 .set_antenna = ieee80211_set_antenna, 3803 .get_antenna = ieee80211_get_antenna, 3804 .set_rekey_data = ieee80211_set_rekey_data, 3805 .tdls_oper = ieee80211_tdls_oper, 3806 .tdls_mgmt = ieee80211_tdls_mgmt, 3807 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3808 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3809 .probe_client = ieee80211_probe_client, 3810 .set_noack_map = ieee80211_set_noack_map, 3811 #ifdef CONFIG_PM 3812 .set_wakeup = ieee80211_set_wakeup, 3813 #endif 3814 .get_channel = ieee80211_cfg_get_channel, 3815 .start_radar_detection = ieee80211_start_radar_detection, 3816 .channel_switch = ieee80211_channel_switch, 3817 .set_qos_map = ieee80211_set_qos_map, 3818 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3819 .add_tx_ts = ieee80211_add_tx_ts, 3820 .del_tx_ts = ieee80211_del_tx_ts, 3821 }; 3822