1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2015 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 "rate.h" 21 #include "mesh.h" 22 #include "wme.h" 23 24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 25 const char *name, 26 unsigned char name_assign_type, 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, name_assign_type, &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; 139 140 ieee80211_check_fast_xmit_iface(sdata); 141 142 return 0; 143 } 144 145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 146 u8 key_idx, bool pairwise, const u8 *mac_addr, 147 struct key_params *params) 148 { 149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 150 struct ieee80211_local *local = sdata->local; 151 struct sta_info *sta = NULL; 152 const struct ieee80211_cipher_scheme *cs = NULL; 153 struct ieee80211_key *key; 154 int err; 155 156 if (!ieee80211_sdata_running(sdata)) 157 return -ENETDOWN; 158 159 /* reject WEP and TKIP keys if WEP failed to initialize */ 160 switch (params->cipher) { 161 case WLAN_CIPHER_SUITE_WEP40: 162 case WLAN_CIPHER_SUITE_TKIP: 163 case WLAN_CIPHER_SUITE_WEP104: 164 if (IS_ERR(local->wep_tx_tfm)) 165 return -EINVAL; 166 break; 167 case WLAN_CIPHER_SUITE_CCMP: 168 case WLAN_CIPHER_SUITE_CCMP_256: 169 case WLAN_CIPHER_SUITE_AES_CMAC: 170 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 171 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 173 case WLAN_CIPHER_SUITE_GCMP: 174 case WLAN_CIPHER_SUITE_GCMP_256: 175 break; 176 default: 177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 178 break; 179 } 180 181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 182 params->key, params->seq_len, params->seq, 183 cs); 184 if (IS_ERR(key)) 185 return PTR_ERR(key); 186 187 if (pairwise) 188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 189 190 mutex_lock(&local->sta_mtx); 191 192 if (mac_addr) { 193 if (ieee80211_vif_is_mesh(&sdata->vif)) 194 sta = sta_info_get(sdata, mac_addr); 195 else 196 sta = sta_info_get_bss(sdata, mac_addr); 197 /* 198 * The ASSOC test makes sure the driver is ready to 199 * receive the key. When wpa_supplicant has roamed 200 * using FT, it attempts to set the key before 201 * association has completed, this rejects that attempt 202 * so it will set the key again after association. 203 * 204 * TODO: accept the key if we have a station entry and 205 * add it to the device after the station. 206 */ 207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 208 ieee80211_key_free_unused(key); 209 err = -ENOENT; 210 goto out_unlock; 211 } 212 } 213 214 switch (sdata->vif.type) { 215 case NL80211_IFTYPE_STATION: 216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 218 break; 219 case NL80211_IFTYPE_AP: 220 case NL80211_IFTYPE_AP_VLAN: 221 /* Keys without a station are used for TX only */ 222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 224 break; 225 case NL80211_IFTYPE_ADHOC: 226 /* no MFP (yet) */ 227 break; 228 case NL80211_IFTYPE_MESH_POINT: 229 #ifdef CONFIG_MAC80211_MESH 230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 232 break; 233 #endif 234 case NL80211_IFTYPE_WDS: 235 case NL80211_IFTYPE_MONITOR: 236 case NL80211_IFTYPE_P2P_DEVICE: 237 case NL80211_IFTYPE_UNSPECIFIED: 238 case NUM_NL80211_IFTYPES: 239 case NL80211_IFTYPE_P2P_CLIENT: 240 case NL80211_IFTYPE_P2P_GO: 241 case NL80211_IFTYPE_OCB: 242 /* shouldn't happen */ 243 WARN_ON_ONCE(1); 244 break; 245 } 246 247 if (sta) 248 sta->cipher_scheme = cs; 249 250 err = ieee80211_key_link(key, sdata, sta); 251 252 out_unlock: 253 mutex_unlock(&local->sta_mtx); 254 255 return err; 256 } 257 258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 259 u8 key_idx, bool pairwise, const u8 *mac_addr) 260 { 261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 262 struct ieee80211_local *local = sdata->local; 263 struct sta_info *sta; 264 struct ieee80211_key *key = NULL; 265 int ret; 266 267 mutex_lock(&local->sta_mtx); 268 mutex_lock(&local->key_mtx); 269 270 if (mac_addr) { 271 ret = -ENOENT; 272 273 sta = sta_info_get_bss(sdata, mac_addr); 274 if (!sta) 275 goto out_unlock; 276 277 if (pairwise) 278 key = key_mtx_dereference(local, sta->ptk[key_idx]); 279 else 280 key = key_mtx_dereference(local, sta->gtk[key_idx]); 281 } else 282 key = key_mtx_dereference(local, sdata->keys[key_idx]); 283 284 if (!key) { 285 ret = -ENOENT; 286 goto out_unlock; 287 } 288 289 ieee80211_key_free(key, true); 290 291 ret = 0; 292 out_unlock: 293 mutex_unlock(&local->key_mtx); 294 mutex_unlock(&local->sta_mtx); 295 296 return ret; 297 } 298 299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 300 u8 key_idx, bool pairwise, const u8 *mac_addr, 301 void *cookie, 302 void (*callback)(void *cookie, 303 struct key_params *params)) 304 { 305 struct ieee80211_sub_if_data *sdata; 306 struct sta_info *sta = NULL; 307 u8 seq[6] = {0}; 308 struct key_params params; 309 struct ieee80211_key *key = NULL; 310 u64 pn64; 311 u32 iv32; 312 u16 iv16; 313 int err = -ENOENT; 314 struct ieee80211_key_seq kseq = {}; 315 316 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 317 318 rcu_read_lock(); 319 320 if (mac_addr) { 321 sta = sta_info_get_bss(sdata, mac_addr); 322 if (!sta) 323 goto out; 324 325 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 326 key = rcu_dereference(sta->ptk[key_idx]); 327 else if (!pairwise && 328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 329 key = rcu_dereference(sta->gtk[key_idx]); 330 } else 331 key = rcu_dereference(sdata->keys[key_idx]); 332 333 if (!key) 334 goto out; 335 336 memset(¶ms, 0, sizeof(params)); 337 338 params.cipher = key->conf.cipher; 339 340 switch (key->conf.cipher) { 341 case WLAN_CIPHER_SUITE_TKIP: 342 iv32 = key->u.tkip.tx.iv32; 343 iv16 = key->u.tkip.tx.iv16; 344 345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 347 drv_get_key_seq(sdata->local, key, &kseq); 348 iv32 = kseq.tkip.iv32; 349 iv16 = kseq.tkip.iv16; 350 } 351 352 seq[0] = iv16 & 0xff; 353 seq[1] = (iv16 >> 8) & 0xff; 354 seq[2] = iv32 & 0xff; 355 seq[3] = (iv32 >> 8) & 0xff; 356 seq[4] = (iv32 >> 16) & 0xff; 357 seq[5] = (iv32 >> 24) & 0xff; 358 params.seq = seq; 359 params.seq_len = 6; 360 break; 361 case WLAN_CIPHER_SUITE_CCMP: 362 case WLAN_CIPHER_SUITE_CCMP_256: 363 case WLAN_CIPHER_SUITE_AES_CMAC: 364 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 366 offsetof(typeof(kseq), aes_cmac)); 367 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 368 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 370 offsetof(typeof(kseq), aes_gmac)); 371 case WLAN_CIPHER_SUITE_GCMP: 372 case WLAN_CIPHER_SUITE_GCMP_256: 373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 374 offsetof(typeof(kseq), gcmp)); 375 376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 378 drv_get_key_seq(sdata->local, key, &kseq); 379 memcpy(seq, kseq.ccmp.pn, 6); 380 } else { 381 pn64 = atomic64_read(&key->conf.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 } 389 params.seq = seq; 390 params.seq_len = 6; 391 break; 392 default: 393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 394 break; 395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 396 break; 397 drv_get_key_seq(sdata->local, key, &kseq); 398 params.seq = kseq.hw.seq; 399 params.seq_len = kseq.hw.seq_len; 400 break; 401 } 402 403 params.key = key->conf.key; 404 params.key_len = key->conf.keylen; 405 406 callback(cookie, ¶ms); 407 err = 0; 408 409 out: 410 rcu_read_unlock(); 411 return err; 412 } 413 414 static int ieee80211_config_default_key(struct wiphy *wiphy, 415 struct net_device *dev, 416 u8 key_idx, bool uni, 417 bool multi) 418 { 419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 420 421 ieee80211_set_default_key(sdata, key_idx, uni, multi); 422 423 return 0; 424 } 425 426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 427 struct net_device *dev, 428 u8 key_idx) 429 { 430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 431 432 ieee80211_set_default_mgmt_key(sdata, key_idx); 433 434 return 0; 435 } 436 437 void sta_set_rate_info_tx(struct sta_info *sta, 438 const struct ieee80211_tx_rate *rate, 439 struct rate_info *rinfo) 440 { 441 rinfo->flags = 0; 442 if (rate->flags & IEEE80211_TX_RC_MCS) { 443 rinfo->flags |= RATE_INFO_FLAGS_MCS; 444 rinfo->mcs = rate->idx; 445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 448 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 449 } else { 450 struct ieee80211_supported_band *sband; 451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 452 u16 brate; 453 454 sband = sta->local->hw.wiphy->bands[ 455 ieee80211_get_sdata_band(sta->sdata)]; 456 brate = sband->bitrates[rate->idx].bitrate; 457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 458 } 459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 460 rinfo->bw = RATE_INFO_BW_40; 461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 462 rinfo->bw = RATE_INFO_BW_80; 463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 464 rinfo->bw = RATE_INFO_BW_160; 465 else 466 rinfo->bw = RATE_INFO_BW_20; 467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 469 } 470 471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 472 int idx, u8 *mac, struct station_info *sinfo) 473 { 474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 475 struct ieee80211_local *local = sdata->local; 476 struct sta_info *sta; 477 int ret = -ENOENT; 478 479 mutex_lock(&local->sta_mtx); 480 481 sta = sta_info_get_by_idx(sdata, idx); 482 if (sta) { 483 ret = 0; 484 memcpy(mac, sta->sta.addr, ETH_ALEN); 485 sta_set_sinfo(sta, sinfo); 486 } 487 488 mutex_unlock(&local->sta_mtx); 489 490 return ret; 491 } 492 493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 494 int idx, struct survey_info *survey) 495 { 496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 497 498 return drv_get_survey(local, idx, survey); 499 } 500 501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 502 const u8 *mac, struct station_info *sinfo) 503 { 504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 505 struct ieee80211_local *local = sdata->local; 506 struct sta_info *sta; 507 int ret = -ENOENT; 508 509 mutex_lock(&local->sta_mtx); 510 511 sta = sta_info_get_bss(sdata, mac); 512 if (sta) { 513 ret = 0; 514 sta_set_sinfo(sta, sinfo); 515 } 516 517 mutex_unlock(&local->sta_mtx); 518 519 return ret; 520 } 521 522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 523 struct cfg80211_chan_def *chandef) 524 { 525 struct ieee80211_local *local = wiphy_priv(wiphy); 526 struct ieee80211_sub_if_data *sdata; 527 int ret = 0; 528 529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 530 return 0; 531 532 mutex_lock(&local->mtx); 533 mutex_lock(&local->iflist_mtx); 534 if (local->use_chanctx) { 535 sdata = rcu_dereference_protected( 536 local->monitor_sdata, 537 lockdep_is_held(&local->iflist_mtx)); 538 if (sdata) { 539 ieee80211_vif_release_channel(sdata); 540 ret = ieee80211_vif_use_channel(sdata, chandef, 541 IEEE80211_CHANCTX_EXCLUSIVE); 542 } 543 } else if (local->open_count == local->monitors) { 544 local->_oper_chandef = *chandef; 545 ieee80211_hw_config(local, 0); 546 } 547 548 if (ret == 0) 549 local->monitor_chandef = *chandef; 550 mutex_unlock(&local->iflist_mtx); 551 mutex_unlock(&local->mtx); 552 553 return ret; 554 } 555 556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 557 const u8 *resp, size_t resp_len, 558 const struct ieee80211_csa_settings *csa) 559 { 560 struct probe_resp *new, *old; 561 562 if (!resp || !resp_len) 563 return 1; 564 565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 566 567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 568 if (!new) 569 return -ENOMEM; 570 571 new->len = resp_len; 572 memcpy(new->data, resp, resp_len); 573 574 if (csa) 575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 576 csa->n_counter_offsets_presp * 577 sizeof(new->csa_counter_offsets[0])); 578 579 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 580 if (old) 581 kfree_rcu(old, rcu_head); 582 583 return 0; 584 } 585 586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 587 struct cfg80211_beacon_data *params, 588 const struct ieee80211_csa_settings *csa) 589 { 590 struct beacon_data *new, *old; 591 int new_head_len, new_tail_len; 592 int size, err; 593 u32 changed = BSS_CHANGED_BEACON; 594 595 old = sdata_dereference(sdata->u.ap.beacon, sdata); 596 597 598 /* Need to have a beacon head if we don't have one yet */ 599 if (!params->head && !old) 600 return -EINVAL; 601 602 /* new or old head? */ 603 if (params->head) 604 new_head_len = params->head_len; 605 else 606 new_head_len = old->head_len; 607 608 /* new or old tail? */ 609 if (params->tail || !old) 610 /* params->tail_len will be zero for !params->tail */ 611 new_tail_len = params->tail_len; 612 else 613 new_tail_len = old->tail_len; 614 615 size = sizeof(*new) + new_head_len + new_tail_len; 616 617 new = kzalloc(size, GFP_KERNEL); 618 if (!new) 619 return -ENOMEM; 620 621 /* start filling the new info now */ 622 623 /* 624 * pointers go into the block we allocated, 625 * memory is | beacon_data | head | tail | 626 */ 627 new->head = ((u8 *) new) + sizeof(*new); 628 new->tail = new->head + new_head_len; 629 new->head_len = new_head_len; 630 new->tail_len = new_tail_len; 631 632 if (csa) { 633 new->csa_current_counter = csa->count; 634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 635 csa->n_counter_offsets_beacon * 636 sizeof(new->csa_counter_offsets[0])); 637 } 638 639 /* copy in head */ 640 if (params->head) 641 memcpy(new->head, params->head, new_head_len); 642 else 643 memcpy(new->head, old->head, new_head_len); 644 645 /* copy in optional tail */ 646 if (params->tail) 647 memcpy(new->tail, params->tail, new_tail_len); 648 else 649 if (old) 650 memcpy(new->tail, old->tail, new_tail_len); 651 652 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 653 params->probe_resp_len, csa); 654 if (err < 0) 655 return err; 656 if (err == 0) 657 changed |= BSS_CHANGED_AP_PROBE_RESP; 658 659 rcu_assign_pointer(sdata->u.ap.beacon, new); 660 661 if (old) 662 kfree_rcu(old, rcu_head); 663 664 return changed; 665 } 666 667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 668 struct cfg80211_ap_settings *params) 669 { 670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 671 struct ieee80211_local *local = sdata->local; 672 struct beacon_data *old; 673 struct ieee80211_sub_if_data *vlan; 674 u32 changed = BSS_CHANGED_BEACON_INT | 675 BSS_CHANGED_BEACON_ENABLED | 676 BSS_CHANGED_BEACON | 677 BSS_CHANGED_SSID | 678 BSS_CHANGED_P2P_PS | 679 BSS_CHANGED_TXPOWER; 680 int err; 681 682 old = sdata_dereference(sdata->u.ap.beacon, sdata); 683 if (old) 684 return -EALREADY; 685 686 switch (params->smps_mode) { 687 case NL80211_SMPS_OFF: 688 sdata->smps_mode = IEEE80211_SMPS_OFF; 689 break; 690 case NL80211_SMPS_STATIC: 691 sdata->smps_mode = IEEE80211_SMPS_STATIC; 692 break; 693 case NL80211_SMPS_DYNAMIC: 694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 695 break; 696 default: 697 return -EINVAL; 698 } 699 sdata->needed_rx_chains = sdata->local->rx_chains; 700 701 mutex_lock(&local->mtx); 702 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 703 IEEE80211_CHANCTX_SHARED); 704 if (!err) 705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 706 mutex_unlock(&local->mtx); 707 if (err) 708 return err; 709 710 /* 711 * Apply control port protocol, this allows us to 712 * not encrypt dynamic WEP control frames. 713 */ 714 sdata->control_port_protocol = params->crypto.control_port_ethertype; 715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 717 ¶ms->crypto, 718 sdata->vif.type); 719 720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 721 vlan->control_port_protocol = 722 params->crypto.control_port_ethertype; 723 vlan->control_port_no_encrypt = 724 params->crypto.control_port_no_encrypt; 725 vlan->encrypt_headroom = 726 ieee80211_cs_headroom(sdata->local, 727 ¶ms->crypto, 728 vlan->vif.type); 729 } 730 731 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 732 sdata->vif.bss_conf.dtim_period = params->dtim_period; 733 sdata->vif.bss_conf.enable_beacon = true; 734 735 sdata->vif.bss_conf.ssid_len = params->ssid_len; 736 if (params->ssid_len) 737 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 738 params->ssid_len); 739 sdata->vif.bss_conf.hidden_ssid = 740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 741 742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 743 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 746 if (params->p2p_opp_ps) 747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 748 IEEE80211_P2P_OPPPS_ENABLE_BIT; 749 750 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 751 if (err < 0) { 752 ieee80211_vif_release_channel(sdata); 753 return err; 754 } 755 changed |= err; 756 757 err = drv_start_ap(sdata->local, sdata); 758 if (err) { 759 old = sdata_dereference(sdata->u.ap.beacon, sdata); 760 761 if (old) 762 kfree_rcu(old, rcu_head); 763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 764 ieee80211_vif_release_channel(sdata); 765 return err; 766 } 767 768 ieee80211_recalc_dtim(local, sdata); 769 ieee80211_bss_info_change_notify(sdata, changed); 770 771 netif_carrier_on(dev); 772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 773 netif_carrier_on(vlan->dev); 774 775 return 0; 776 } 777 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 779 struct cfg80211_beacon_data *params) 780 { 781 struct ieee80211_sub_if_data *sdata; 782 struct beacon_data *old; 783 int err; 784 785 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 786 sdata_assert_lock(sdata); 787 788 /* don't allow changing the beacon while CSA is in place - offset 789 * of channel switch counter may change 790 */ 791 if (sdata->vif.csa_active) 792 return -EBUSY; 793 794 old = sdata_dereference(sdata->u.ap.beacon, sdata); 795 if (!old) 796 return -ENOENT; 797 798 err = ieee80211_assign_beacon(sdata, params, NULL); 799 if (err < 0) 800 return err; 801 ieee80211_bss_info_change_notify(sdata, err); 802 return 0; 803 } 804 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 806 { 807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 808 struct ieee80211_sub_if_data *vlan; 809 struct ieee80211_local *local = sdata->local; 810 struct beacon_data *old_beacon; 811 struct probe_resp *old_probe_resp; 812 struct cfg80211_chan_def chandef; 813 814 sdata_assert_lock(sdata); 815 816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 817 if (!old_beacon) 818 return -ENOENT; 819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 820 821 /* abort any running channel switch */ 822 mutex_lock(&local->mtx); 823 sdata->vif.csa_active = false; 824 if (sdata->csa_block_tx) { 825 ieee80211_wake_vif_queues(local, sdata, 826 IEEE80211_QUEUE_STOP_REASON_CSA); 827 sdata->csa_block_tx = false; 828 } 829 830 mutex_unlock(&local->mtx); 831 832 kfree(sdata->u.ap.next_beacon); 833 sdata->u.ap.next_beacon = NULL; 834 835 /* turn off carrier for this interface and dependent VLANs */ 836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 837 netif_carrier_off(vlan->dev); 838 netif_carrier_off(dev); 839 840 /* remove beacon and probe response */ 841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 843 kfree_rcu(old_beacon, rcu_head); 844 if (old_probe_resp) 845 kfree_rcu(old_probe_resp, rcu_head); 846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 847 848 __sta_info_flush(sdata, true); 849 ieee80211_free_keys(sdata, true); 850 851 sdata->vif.bss_conf.enable_beacon = false; 852 sdata->vif.bss_conf.ssid_len = 0; 853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 855 856 if (sdata->wdev.cac_started) { 857 chandef = sdata->vif.bss_conf.chandef; 858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 859 cfg80211_cac_event(sdata->dev, &chandef, 860 NL80211_RADAR_CAC_ABORTED, 861 GFP_KERNEL); 862 } 863 864 drv_stop_ap(sdata->local, sdata); 865 866 /* free all potentially still buffered bcast frames */ 867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 868 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 869 870 mutex_lock(&local->mtx); 871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 872 ieee80211_vif_release_channel(sdata); 873 mutex_unlock(&local->mtx); 874 875 return 0; 876 } 877 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 879 struct iapp_layer2_update { 880 u8 da[ETH_ALEN]; /* broadcast */ 881 u8 sa[ETH_ALEN]; /* STA addr */ 882 __be16 len; /* 6 */ 883 u8 dsap; /* 0 */ 884 u8 ssap; /* 0 */ 885 u8 control; 886 u8 xid_info[3]; 887 } __packed; 888 889 static void ieee80211_send_layer2_update(struct sta_info *sta) 890 { 891 struct iapp_layer2_update *msg; 892 struct sk_buff *skb; 893 894 /* Send Level 2 Update Frame to update forwarding tables in layer 2 895 * bridge devices */ 896 897 skb = dev_alloc_skb(sizeof(*msg)); 898 if (!skb) 899 return; 900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 901 902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 904 905 eth_broadcast_addr(msg->da); 906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 907 msg->len = htons(6); 908 msg->dsap = 0; 909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 910 msg->control = 0xaf; /* XID response lsb.1111F101. 911 * F=0 (no poll command; unsolicited frame) */ 912 msg->xid_info[0] = 0x81; /* XID format identifier */ 913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 915 916 skb->dev = sta->sdata->dev; 917 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 918 memset(skb->cb, 0, sizeof(skb->cb)); 919 netif_rx_ni(skb); 920 } 921 922 static int sta_apply_auth_flags(struct ieee80211_local *local, 923 struct sta_info *sta, 924 u32 mask, u32 set) 925 { 926 int ret; 927 928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 930 !test_sta_flag(sta, WLAN_STA_AUTH)) { 931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 932 if (ret) 933 return ret; 934 } 935 936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 938 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 939 /* 940 * When peer becomes associated, init rate control as 941 * well. Some drivers require rate control initialized 942 * before drv_sta_state() is called. 943 */ 944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 945 rate_control_rate_init(sta); 946 947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 948 if (ret) 949 return ret; 950 } 951 952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 957 else 958 ret = 0; 959 if (ret) 960 return ret; 961 } 962 963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 965 test_sta_flag(sta, WLAN_STA_ASSOC)) { 966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 967 if (ret) 968 return ret; 969 } 970 971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 973 test_sta_flag(sta, WLAN_STA_AUTH)) { 974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 975 if (ret) 976 return ret; 977 } 978 979 return 0; 980 } 981 982 static void sta_apply_mesh_params(struct ieee80211_local *local, 983 struct sta_info *sta, 984 struct station_parameters *params) 985 { 986 #ifdef CONFIG_MAC80211_MESH 987 struct ieee80211_sub_if_data *sdata = sta->sdata; 988 u32 changed = 0; 989 990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 991 switch (params->plink_state) { 992 case NL80211_PLINK_ESTAB: 993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 994 changed = mesh_plink_inc_estab_count(sdata); 995 sta->mesh->plink_state = params->plink_state; 996 997 ieee80211_mps_sta_status_update(sta); 998 changed |= ieee80211_mps_set_sta_local_pm(sta, 999 sdata->u.mesh.mshcfg.power_mode); 1000 break; 1001 case NL80211_PLINK_LISTEN: 1002 case NL80211_PLINK_BLOCKED: 1003 case NL80211_PLINK_OPN_SNT: 1004 case NL80211_PLINK_OPN_RCVD: 1005 case NL80211_PLINK_CNF_RCVD: 1006 case NL80211_PLINK_HOLDING: 1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1008 changed = mesh_plink_dec_estab_count(sdata); 1009 sta->mesh->plink_state = params->plink_state; 1010 1011 ieee80211_mps_sta_status_update(sta); 1012 changed |= ieee80211_mps_set_sta_local_pm(sta, 1013 NL80211_MESH_POWER_UNKNOWN); 1014 break; 1015 default: 1016 /* nothing */ 1017 break; 1018 } 1019 } 1020 1021 switch (params->plink_action) { 1022 case NL80211_PLINK_ACTION_NO_ACTION: 1023 /* nothing */ 1024 break; 1025 case NL80211_PLINK_ACTION_OPEN: 1026 changed |= mesh_plink_open(sta); 1027 break; 1028 case NL80211_PLINK_ACTION_BLOCK: 1029 changed |= mesh_plink_block(sta); 1030 break; 1031 } 1032 1033 if (params->local_pm) 1034 changed |= ieee80211_mps_set_sta_local_pm(sta, 1035 params->local_pm); 1036 1037 ieee80211_mbss_info_change_notify(sdata, changed); 1038 #endif 1039 } 1040 1041 static int sta_apply_parameters(struct ieee80211_local *local, 1042 struct sta_info *sta, 1043 struct station_parameters *params) 1044 { 1045 int ret = 0; 1046 struct ieee80211_supported_band *sband; 1047 struct ieee80211_sub_if_data *sdata = sta->sdata; 1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1049 u32 mask, set; 1050 1051 sband = local->hw.wiphy->bands[band]; 1052 1053 mask = params->sta_flags_mask; 1054 set = params->sta_flags_set; 1055 1056 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1057 /* 1058 * In mesh mode, ASSOCIATED isn't part of the nl80211 1059 * API but must follow AUTHENTICATED for driver state. 1060 */ 1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1066 /* 1067 * TDLS -- everything follows authorized, but 1068 * only becoming authorized is possible, not 1069 * going back 1070 */ 1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1073 BIT(NL80211_STA_FLAG_ASSOCIATED); 1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1075 BIT(NL80211_STA_FLAG_ASSOCIATED); 1076 } 1077 } 1078 1079 if (mask & BIT(NL80211_STA_FLAG_WME) && 1080 local->hw.queues >= IEEE80211_NUM_ACS) 1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1082 1083 /* auth flags will be set later for TDLS, 1084 * and for unassociated stations that move to assocaited */ 1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1088 ret = sta_apply_auth_flags(local, sta, mask, set); 1089 if (ret) 1090 return ret; 1091 } 1092 1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1096 else 1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1098 } 1099 1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1102 if (set & BIT(NL80211_STA_FLAG_MFP)) 1103 set_sta_flag(sta, WLAN_STA_MFP); 1104 else 1105 clear_sta_flag(sta, WLAN_STA_MFP); 1106 } 1107 1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1111 else 1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1113 } 1114 1115 /* mark TDLS channel switch support, if the AP allows it */ 1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1117 !sdata->u.mgd.tdls_chan_switch_prohibited && 1118 params->ext_capab_len >= 4 && 1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1121 1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1123 !sdata->u.mgd.tdls_wider_bw_prohibited && 1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1125 params->ext_capab_len >= 8 && 1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1128 1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1130 sta->sta.uapsd_queues = params->uapsd_queues; 1131 sta->sta.max_sp = params->max_sp; 1132 } 1133 1134 /* 1135 * cfg80211 validates this (1-2007) and allows setting the AID 1136 * only when creating a new station entry 1137 */ 1138 if (params->aid) 1139 sta->sta.aid = params->aid; 1140 1141 /* 1142 * Some of the following updates would be racy if called on an 1143 * existing station, via ieee80211_change_station(). However, 1144 * all such changes are rejected by cfg80211 except for updates 1145 * changing the supported rates on an existing but not yet used 1146 * TDLS peer. 1147 */ 1148 1149 if (params->listen_interval >= 0) 1150 sta->listen_interval = params->listen_interval; 1151 1152 if (params->supported_rates) { 1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1154 sband, params->supported_rates, 1155 params->supported_rates_len, 1156 &sta->sta.supp_rates[band]); 1157 } 1158 1159 if (params->ht_capa) 1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1161 params->ht_capa, sta); 1162 1163 if (params->vht_capa) 1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1165 params->vht_capa, sta); 1166 1167 if (params->opmode_notif_used) { 1168 /* returned value is only needed for rc update, but the 1169 * rc isn't initialized here yet, so ignore it 1170 */ 1171 __ieee80211_vht_handle_opmode(sdata, sta, 1172 params->opmode_notif, band); 1173 } 1174 1175 if (ieee80211_vif_is_mesh(&sdata->vif)) 1176 sta_apply_mesh_params(local, sta, params); 1177 1178 /* set the STA state after all sta info from usermode has been set */ 1179 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1180 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1181 ret = sta_apply_auth_flags(local, sta, mask, set); 1182 if (ret) 1183 return ret; 1184 } 1185 1186 return 0; 1187 } 1188 1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1190 const u8 *mac, 1191 struct station_parameters *params) 1192 { 1193 struct ieee80211_local *local = wiphy_priv(wiphy); 1194 struct sta_info *sta; 1195 struct ieee80211_sub_if_data *sdata; 1196 int err; 1197 int layer2_update; 1198 1199 if (params->vlan) { 1200 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1201 1202 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1203 sdata->vif.type != NL80211_IFTYPE_AP) 1204 return -EINVAL; 1205 } else 1206 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1207 1208 if (ether_addr_equal(mac, sdata->vif.addr)) 1209 return -EINVAL; 1210 1211 if (is_multicast_ether_addr(mac)) 1212 return -EINVAL; 1213 1214 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1215 if (!sta) 1216 return -ENOMEM; 1217 1218 /* 1219 * defaults -- if userspace wants something else we'll 1220 * change it accordingly in sta_apply_parameters() 1221 */ 1222 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 1223 !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1224 BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1225 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1226 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1227 } 1228 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1229 sta->sta.tdls = true; 1230 1231 err = sta_apply_parameters(local, sta, params); 1232 if (err) { 1233 sta_info_free(local, sta); 1234 return err; 1235 } 1236 1237 /* 1238 * for TDLS and for unassociated station, rate control should be 1239 * initialized only when rates are known and station is marked 1240 * authorized/associated 1241 */ 1242 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1243 test_sta_flag(sta, WLAN_STA_ASSOC)) 1244 rate_control_rate_init(sta); 1245 1246 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1247 sdata->vif.type == NL80211_IFTYPE_AP; 1248 1249 err = sta_info_insert_rcu(sta); 1250 if (err) { 1251 rcu_read_unlock(); 1252 return err; 1253 } 1254 1255 if (layer2_update) 1256 ieee80211_send_layer2_update(sta); 1257 1258 rcu_read_unlock(); 1259 1260 return 0; 1261 } 1262 1263 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1264 struct station_del_parameters *params) 1265 { 1266 struct ieee80211_sub_if_data *sdata; 1267 1268 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1269 1270 if (params->mac) 1271 return sta_info_destroy_addr_bss(sdata, params->mac); 1272 1273 sta_info_flush(sdata); 1274 return 0; 1275 } 1276 1277 static int ieee80211_change_station(struct wiphy *wiphy, 1278 struct net_device *dev, const u8 *mac, 1279 struct station_parameters *params) 1280 { 1281 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1282 struct ieee80211_local *local = wiphy_priv(wiphy); 1283 struct sta_info *sta; 1284 struct ieee80211_sub_if_data *vlansdata; 1285 enum cfg80211_station_type statype; 1286 int err; 1287 1288 mutex_lock(&local->sta_mtx); 1289 1290 sta = sta_info_get_bss(sdata, mac); 1291 if (!sta) { 1292 err = -ENOENT; 1293 goto out_err; 1294 } 1295 1296 switch (sdata->vif.type) { 1297 case NL80211_IFTYPE_MESH_POINT: 1298 if (sdata->u.mesh.user_mpm) 1299 statype = CFG80211_STA_MESH_PEER_USER; 1300 else 1301 statype = CFG80211_STA_MESH_PEER_KERNEL; 1302 break; 1303 case NL80211_IFTYPE_ADHOC: 1304 statype = CFG80211_STA_IBSS; 1305 break; 1306 case NL80211_IFTYPE_STATION: 1307 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1308 statype = CFG80211_STA_AP_STA; 1309 break; 1310 } 1311 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1312 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1313 else 1314 statype = CFG80211_STA_TDLS_PEER_SETUP; 1315 break; 1316 case NL80211_IFTYPE_AP: 1317 case NL80211_IFTYPE_AP_VLAN: 1318 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1319 statype = CFG80211_STA_AP_CLIENT; 1320 else 1321 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1322 break; 1323 default: 1324 err = -EOPNOTSUPP; 1325 goto out_err; 1326 } 1327 1328 err = cfg80211_check_station_change(wiphy, params, statype); 1329 if (err) 1330 goto out_err; 1331 1332 if (params->vlan && params->vlan != sta->sdata->dev) { 1333 bool prev_4addr = false; 1334 bool new_4addr = false; 1335 1336 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1337 1338 if (params->vlan->ieee80211_ptr->use_4addr) { 1339 if (vlansdata->u.vlan.sta) { 1340 err = -EBUSY; 1341 goto out_err; 1342 } 1343 1344 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1345 new_4addr = true; 1346 } 1347 1348 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1349 sta->sdata->u.vlan.sta) { 1350 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1351 prev_4addr = true; 1352 } 1353 1354 sta->sdata = vlansdata; 1355 ieee80211_check_fast_xmit(sta); 1356 1357 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1358 prev_4addr != new_4addr) { 1359 if (new_4addr) 1360 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1361 else 1362 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1363 } 1364 1365 ieee80211_send_layer2_update(sta); 1366 } 1367 1368 err = sta_apply_parameters(local, sta, params); 1369 if (err) 1370 goto out_err; 1371 1372 mutex_unlock(&local->sta_mtx); 1373 1374 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1375 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1376 sta->known_smps_mode != sta->sdata->bss->req_smps && 1377 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1378 sta_info_tx_streams(sta) != 1) { 1379 ht_dbg(sta->sdata, 1380 "%pM just authorized and MIMO capable - update SMPS\n", 1381 sta->sta.addr); 1382 ieee80211_send_smps_action(sta->sdata, 1383 sta->sdata->bss->req_smps, 1384 sta->sta.addr, 1385 sta->sdata->vif.bss_conf.bssid); 1386 } 1387 1388 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1389 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1390 ieee80211_recalc_ps(local); 1391 ieee80211_recalc_ps_vif(sdata); 1392 } 1393 1394 return 0; 1395 out_err: 1396 mutex_unlock(&local->sta_mtx); 1397 return err; 1398 } 1399 1400 #ifdef CONFIG_MAC80211_MESH 1401 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1402 const u8 *dst, const u8 *next_hop) 1403 { 1404 struct ieee80211_sub_if_data *sdata; 1405 struct mesh_path *mpath; 1406 struct sta_info *sta; 1407 1408 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1409 1410 rcu_read_lock(); 1411 sta = sta_info_get(sdata, next_hop); 1412 if (!sta) { 1413 rcu_read_unlock(); 1414 return -ENOENT; 1415 } 1416 1417 mpath = mesh_path_add(sdata, dst); 1418 if (IS_ERR(mpath)) { 1419 rcu_read_unlock(); 1420 return PTR_ERR(mpath); 1421 } 1422 1423 mesh_path_fix_nexthop(mpath, sta); 1424 1425 rcu_read_unlock(); 1426 return 0; 1427 } 1428 1429 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1430 const u8 *dst) 1431 { 1432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1433 1434 if (dst) 1435 return mesh_path_del(sdata, dst); 1436 1437 mesh_path_flush_by_iface(sdata); 1438 return 0; 1439 } 1440 1441 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1442 const u8 *dst, const u8 *next_hop) 1443 { 1444 struct ieee80211_sub_if_data *sdata; 1445 struct mesh_path *mpath; 1446 struct sta_info *sta; 1447 1448 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1449 1450 rcu_read_lock(); 1451 1452 sta = sta_info_get(sdata, next_hop); 1453 if (!sta) { 1454 rcu_read_unlock(); 1455 return -ENOENT; 1456 } 1457 1458 mpath = mesh_path_lookup(sdata, dst); 1459 if (!mpath) { 1460 rcu_read_unlock(); 1461 return -ENOENT; 1462 } 1463 1464 mesh_path_fix_nexthop(mpath, sta); 1465 1466 rcu_read_unlock(); 1467 return 0; 1468 } 1469 1470 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1471 struct mpath_info *pinfo) 1472 { 1473 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1474 1475 if (next_hop_sta) 1476 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1477 else 1478 eth_zero_addr(next_hop); 1479 1480 memset(pinfo, 0, sizeof(*pinfo)); 1481 1482 pinfo->generation = mesh_paths_generation; 1483 1484 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1485 MPATH_INFO_SN | 1486 MPATH_INFO_METRIC | 1487 MPATH_INFO_EXPTIME | 1488 MPATH_INFO_DISCOVERY_TIMEOUT | 1489 MPATH_INFO_DISCOVERY_RETRIES | 1490 MPATH_INFO_FLAGS; 1491 1492 pinfo->frame_qlen = mpath->frame_queue.qlen; 1493 pinfo->sn = mpath->sn; 1494 pinfo->metric = mpath->metric; 1495 if (time_before(jiffies, mpath->exp_time)) 1496 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1497 pinfo->discovery_timeout = 1498 jiffies_to_msecs(mpath->discovery_timeout); 1499 pinfo->discovery_retries = mpath->discovery_retries; 1500 if (mpath->flags & MESH_PATH_ACTIVE) 1501 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1502 if (mpath->flags & MESH_PATH_RESOLVING) 1503 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1504 if (mpath->flags & MESH_PATH_SN_VALID) 1505 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1506 if (mpath->flags & MESH_PATH_FIXED) 1507 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1508 if (mpath->flags & MESH_PATH_RESOLVED) 1509 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1510 } 1511 1512 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1513 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1514 1515 { 1516 struct ieee80211_sub_if_data *sdata; 1517 struct mesh_path *mpath; 1518 1519 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1520 1521 rcu_read_lock(); 1522 mpath = mesh_path_lookup(sdata, dst); 1523 if (!mpath) { 1524 rcu_read_unlock(); 1525 return -ENOENT; 1526 } 1527 memcpy(dst, mpath->dst, ETH_ALEN); 1528 mpath_set_pinfo(mpath, next_hop, pinfo); 1529 rcu_read_unlock(); 1530 return 0; 1531 } 1532 1533 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1534 int idx, u8 *dst, u8 *next_hop, 1535 struct mpath_info *pinfo) 1536 { 1537 struct ieee80211_sub_if_data *sdata; 1538 struct mesh_path *mpath; 1539 1540 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1541 1542 rcu_read_lock(); 1543 mpath = mesh_path_lookup_by_idx(sdata, idx); 1544 if (!mpath) { 1545 rcu_read_unlock(); 1546 return -ENOENT; 1547 } 1548 memcpy(dst, mpath->dst, ETH_ALEN); 1549 mpath_set_pinfo(mpath, next_hop, pinfo); 1550 rcu_read_unlock(); 1551 return 0; 1552 } 1553 1554 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1555 struct mpath_info *pinfo) 1556 { 1557 memset(pinfo, 0, sizeof(*pinfo)); 1558 memcpy(mpp, mpath->mpp, ETH_ALEN); 1559 1560 pinfo->generation = mpp_paths_generation; 1561 } 1562 1563 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1564 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1565 1566 { 1567 struct ieee80211_sub_if_data *sdata; 1568 struct mesh_path *mpath; 1569 1570 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1571 1572 rcu_read_lock(); 1573 mpath = mpp_path_lookup(sdata, dst); 1574 if (!mpath) { 1575 rcu_read_unlock(); 1576 return -ENOENT; 1577 } 1578 memcpy(dst, mpath->dst, ETH_ALEN); 1579 mpp_set_pinfo(mpath, mpp, pinfo); 1580 rcu_read_unlock(); 1581 return 0; 1582 } 1583 1584 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1585 int idx, u8 *dst, u8 *mpp, 1586 struct mpath_info *pinfo) 1587 { 1588 struct ieee80211_sub_if_data *sdata; 1589 struct mesh_path *mpath; 1590 1591 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1592 1593 rcu_read_lock(); 1594 mpath = mpp_path_lookup_by_idx(sdata, idx); 1595 if (!mpath) { 1596 rcu_read_unlock(); 1597 return -ENOENT; 1598 } 1599 memcpy(dst, mpath->dst, ETH_ALEN); 1600 mpp_set_pinfo(mpath, mpp, pinfo); 1601 rcu_read_unlock(); 1602 return 0; 1603 } 1604 1605 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1606 struct net_device *dev, 1607 struct mesh_config *conf) 1608 { 1609 struct ieee80211_sub_if_data *sdata; 1610 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1611 1612 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1613 return 0; 1614 } 1615 1616 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1617 { 1618 return (mask >> (parm-1)) & 0x1; 1619 } 1620 1621 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1622 const struct mesh_setup *setup) 1623 { 1624 u8 *new_ie; 1625 const u8 *old_ie; 1626 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1627 struct ieee80211_sub_if_data, u.mesh); 1628 1629 /* allocate information elements */ 1630 new_ie = NULL; 1631 old_ie = ifmsh->ie; 1632 1633 if (setup->ie_len) { 1634 new_ie = kmemdup(setup->ie, setup->ie_len, 1635 GFP_KERNEL); 1636 if (!new_ie) 1637 return -ENOMEM; 1638 } 1639 ifmsh->ie_len = setup->ie_len; 1640 ifmsh->ie = new_ie; 1641 kfree(old_ie); 1642 1643 /* now copy the rest of the setup parameters */ 1644 ifmsh->mesh_id_len = setup->mesh_id_len; 1645 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1646 ifmsh->mesh_sp_id = setup->sync_method; 1647 ifmsh->mesh_pp_id = setup->path_sel_proto; 1648 ifmsh->mesh_pm_id = setup->path_metric; 1649 ifmsh->user_mpm = setup->user_mpm; 1650 ifmsh->mesh_auth_id = setup->auth_id; 1651 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1652 if (setup->is_authenticated) 1653 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1654 if (setup->is_secure) 1655 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1656 1657 /* mcast rate setting in Mesh Node */ 1658 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1659 sizeof(setup->mcast_rate)); 1660 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1661 1662 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1663 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1664 1665 return 0; 1666 } 1667 1668 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1669 struct net_device *dev, u32 mask, 1670 const struct mesh_config *nconf) 1671 { 1672 struct mesh_config *conf; 1673 struct ieee80211_sub_if_data *sdata; 1674 struct ieee80211_if_mesh *ifmsh; 1675 1676 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1677 ifmsh = &sdata->u.mesh; 1678 1679 /* Set the config options which we are interested in setting */ 1680 conf = &(sdata->u.mesh.mshcfg); 1681 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1682 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1683 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1684 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1685 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1686 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1687 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1688 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1689 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1690 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1691 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1692 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1693 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1694 conf->element_ttl = nconf->element_ttl; 1695 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1696 if (ifmsh->user_mpm) 1697 return -EBUSY; 1698 conf->auto_open_plinks = nconf->auto_open_plinks; 1699 } 1700 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1701 conf->dot11MeshNbrOffsetMaxNeighbor = 1702 nconf->dot11MeshNbrOffsetMaxNeighbor; 1703 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1704 conf->dot11MeshHWMPmaxPREQretries = 1705 nconf->dot11MeshHWMPmaxPREQretries; 1706 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1707 conf->path_refresh_time = nconf->path_refresh_time; 1708 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1709 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1710 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1711 conf->dot11MeshHWMPactivePathTimeout = 1712 nconf->dot11MeshHWMPactivePathTimeout; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1714 conf->dot11MeshHWMPpreqMinInterval = 1715 nconf->dot11MeshHWMPpreqMinInterval; 1716 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1717 conf->dot11MeshHWMPperrMinInterval = 1718 nconf->dot11MeshHWMPperrMinInterval; 1719 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1720 mask)) 1721 conf->dot11MeshHWMPnetDiameterTraversalTime = 1722 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1724 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1725 ieee80211_mesh_root_setup(ifmsh); 1726 } 1727 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1728 /* our current gate announcement implementation rides on root 1729 * announcements, so require this ifmsh to also be a root node 1730 * */ 1731 if (nconf->dot11MeshGateAnnouncementProtocol && 1732 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1733 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1734 ieee80211_mesh_root_setup(ifmsh); 1735 } 1736 conf->dot11MeshGateAnnouncementProtocol = 1737 nconf->dot11MeshGateAnnouncementProtocol; 1738 } 1739 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1740 conf->dot11MeshHWMPRannInterval = 1741 nconf->dot11MeshHWMPRannInterval; 1742 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1743 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1744 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1745 /* our RSSI threshold implementation is supported only for 1746 * devices that report signal in dBm. 1747 */ 1748 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1749 return -ENOTSUPP; 1750 conf->rssi_threshold = nconf->rssi_threshold; 1751 } 1752 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1753 conf->ht_opmode = nconf->ht_opmode; 1754 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1755 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1756 } 1757 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1758 conf->dot11MeshHWMPactivePathToRootTimeout = 1759 nconf->dot11MeshHWMPactivePathToRootTimeout; 1760 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1761 conf->dot11MeshHWMProotInterval = 1762 nconf->dot11MeshHWMProotInterval; 1763 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1764 conf->dot11MeshHWMPconfirmationInterval = 1765 nconf->dot11MeshHWMPconfirmationInterval; 1766 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1767 conf->power_mode = nconf->power_mode; 1768 ieee80211_mps_local_status_update(sdata); 1769 } 1770 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1771 conf->dot11MeshAwakeWindowDuration = 1772 nconf->dot11MeshAwakeWindowDuration; 1773 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1774 conf->plink_timeout = nconf->plink_timeout; 1775 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1776 return 0; 1777 } 1778 1779 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1780 const struct mesh_config *conf, 1781 const struct mesh_setup *setup) 1782 { 1783 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1784 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1785 int err; 1786 1787 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1788 err = copy_mesh_setup(ifmsh, setup); 1789 if (err) 1790 return err; 1791 1792 /* can mesh use other SMPS modes? */ 1793 sdata->smps_mode = IEEE80211_SMPS_OFF; 1794 sdata->needed_rx_chains = sdata->local->rx_chains; 1795 1796 mutex_lock(&sdata->local->mtx); 1797 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1798 IEEE80211_CHANCTX_SHARED); 1799 mutex_unlock(&sdata->local->mtx); 1800 if (err) 1801 return err; 1802 1803 return ieee80211_start_mesh(sdata); 1804 } 1805 1806 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1807 { 1808 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1809 1810 ieee80211_stop_mesh(sdata); 1811 mutex_lock(&sdata->local->mtx); 1812 ieee80211_vif_release_channel(sdata); 1813 mutex_unlock(&sdata->local->mtx); 1814 1815 return 0; 1816 } 1817 #endif 1818 1819 static int ieee80211_change_bss(struct wiphy *wiphy, 1820 struct net_device *dev, 1821 struct bss_parameters *params) 1822 { 1823 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1824 enum ieee80211_band band; 1825 u32 changed = 0; 1826 1827 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1828 return -ENOENT; 1829 1830 band = ieee80211_get_sdata_band(sdata); 1831 1832 if (params->use_cts_prot >= 0) { 1833 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1834 changed |= BSS_CHANGED_ERP_CTS_PROT; 1835 } 1836 if (params->use_short_preamble >= 0) { 1837 sdata->vif.bss_conf.use_short_preamble = 1838 params->use_short_preamble; 1839 changed |= BSS_CHANGED_ERP_PREAMBLE; 1840 } 1841 1842 if (!sdata->vif.bss_conf.use_short_slot && 1843 band == IEEE80211_BAND_5GHZ) { 1844 sdata->vif.bss_conf.use_short_slot = true; 1845 changed |= BSS_CHANGED_ERP_SLOT; 1846 } 1847 1848 if (params->use_short_slot_time >= 0) { 1849 sdata->vif.bss_conf.use_short_slot = 1850 params->use_short_slot_time; 1851 changed |= BSS_CHANGED_ERP_SLOT; 1852 } 1853 1854 if (params->basic_rates) { 1855 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1856 wiphy->bands[band], 1857 params->basic_rates, 1858 params->basic_rates_len, 1859 &sdata->vif.bss_conf.basic_rates); 1860 changed |= BSS_CHANGED_BASIC_RATES; 1861 } 1862 1863 if (params->ap_isolate >= 0) { 1864 if (params->ap_isolate) 1865 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1866 else 1867 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1868 } 1869 1870 if (params->ht_opmode >= 0) { 1871 sdata->vif.bss_conf.ht_operation_mode = 1872 (u16) params->ht_opmode; 1873 changed |= BSS_CHANGED_HT; 1874 } 1875 1876 if (params->p2p_ctwindow >= 0) { 1877 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1878 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1879 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1880 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1881 changed |= BSS_CHANGED_P2P_PS; 1882 } 1883 1884 if (params->p2p_opp_ps > 0) { 1885 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1886 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1887 changed |= BSS_CHANGED_P2P_PS; 1888 } else if (params->p2p_opp_ps == 0) { 1889 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1890 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1891 changed |= BSS_CHANGED_P2P_PS; 1892 } 1893 1894 ieee80211_bss_info_change_notify(sdata, changed); 1895 1896 return 0; 1897 } 1898 1899 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1900 struct net_device *dev, 1901 struct ieee80211_txq_params *params) 1902 { 1903 struct ieee80211_local *local = wiphy_priv(wiphy); 1904 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1905 struct ieee80211_tx_queue_params p; 1906 1907 if (!local->ops->conf_tx) 1908 return -EOPNOTSUPP; 1909 1910 if (local->hw.queues < IEEE80211_NUM_ACS) 1911 return -EOPNOTSUPP; 1912 1913 memset(&p, 0, sizeof(p)); 1914 p.aifs = params->aifs; 1915 p.cw_max = params->cwmax; 1916 p.cw_min = params->cwmin; 1917 p.txop = params->txop; 1918 1919 /* 1920 * Setting tx queue params disables u-apsd because it's only 1921 * called in master mode. 1922 */ 1923 p.uapsd = false; 1924 1925 sdata->tx_conf[params->ac] = p; 1926 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1927 wiphy_debug(local->hw.wiphy, 1928 "failed to set TX queue parameters for AC %d\n", 1929 params->ac); 1930 return -EINVAL; 1931 } 1932 1933 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1934 1935 return 0; 1936 } 1937 1938 #ifdef CONFIG_PM 1939 static int ieee80211_suspend(struct wiphy *wiphy, 1940 struct cfg80211_wowlan *wowlan) 1941 { 1942 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1943 } 1944 1945 static int ieee80211_resume(struct wiphy *wiphy) 1946 { 1947 return __ieee80211_resume(wiphy_priv(wiphy)); 1948 } 1949 #else 1950 #define ieee80211_suspend NULL 1951 #define ieee80211_resume NULL 1952 #endif 1953 1954 static int ieee80211_scan(struct wiphy *wiphy, 1955 struct cfg80211_scan_request *req) 1956 { 1957 struct ieee80211_sub_if_data *sdata; 1958 1959 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1960 1961 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1962 case NL80211_IFTYPE_STATION: 1963 case NL80211_IFTYPE_ADHOC: 1964 case NL80211_IFTYPE_MESH_POINT: 1965 case NL80211_IFTYPE_P2P_CLIENT: 1966 case NL80211_IFTYPE_P2P_DEVICE: 1967 break; 1968 case NL80211_IFTYPE_P2P_GO: 1969 if (sdata->local->ops->hw_scan) 1970 break; 1971 /* 1972 * FIXME: implement NoA while scanning in software, 1973 * for now fall through to allow scanning only when 1974 * beaconing hasn't been configured yet 1975 */ 1976 case NL80211_IFTYPE_AP: 1977 /* 1978 * If the scan has been forced (and the driver supports 1979 * forcing), don't care about being beaconing already. 1980 * This will create problems to the attached stations (e.g. all 1981 * the frames sent while scanning on other channel will be 1982 * lost) 1983 */ 1984 if (sdata->u.ap.beacon && 1985 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 1986 !(req->flags & NL80211_SCAN_FLAG_AP))) 1987 return -EOPNOTSUPP; 1988 break; 1989 default: 1990 return -EOPNOTSUPP; 1991 } 1992 1993 return ieee80211_request_scan(sdata, req); 1994 } 1995 1996 static int 1997 ieee80211_sched_scan_start(struct wiphy *wiphy, 1998 struct net_device *dev, 1999 struct cfg80211_sched_scan_request *req) 2000 { 2001 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2002 2003 if (!sdata->local->ops->sched_scan_start) 2004 return -EOPNOTSUPP; 2005 2006 return ieee80211_request_sched_scan_start(sdata, req); 2007 } 2008 2009 static int 2010 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2011 { 2012 struct ieee80211_local *local = wiphy_priv(wiphy); 2013 2014 if (!local->ops->sched_scan_stop) 2015 return -EOPNOTSUPP; 2016 2017 return ieee80211_request_sched_scan_stop(local); 2018 } 2019 2020 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2021 struct cfg80211_auth_request *req) 2022 { 2023 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2024 } 2025 2026 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2027 struct cfg80211_assoc_request *req) 2028 { 2029 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2030 } 2031 2032 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2033 struct cfg80211_deauth_request *req) 2034 { 2035 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2036 } 2037 2038 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2039 struct cfg80211_disassoc_request *req) 2040 { 2041 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2042 } 2043 2044 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2045 struct cfg80211_ibss_params *params) 2046 { 2047 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2048 } 2049 2050 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2051 { 2052 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2053 } 2054 2055 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2056 struct ocb_setup *setup) 2057 { 2058 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2059 } 2060 2061 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2062 { 2063 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2064 } 2065 2066 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2067 int rate[IEEE80211_NUM_BANDS]) 2068 { 2069 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2070 2071 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2072 sizeof(int) * IEEE80211_NUM_BANDS); 2073 2074 return 0; 2075 } 2076 2077 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2078 { 2079 struct ieee80211_local *local = wiphy_priv(wiphy); 2080 int err; 2081 2082 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2083 ieee80211_check_fast_xmit_all(local); 2084 2085 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2086 2087 if (err) { 2088 ieee80211_check_fast_xmit_all(local); 2089 return err; 2090 } 2091 } 2092 2093 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2094 (changed & WIPHY_PARAM_DYN_ACK)) { 2095 s16 coverage_class; 2096 2097 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2098 wiphy->coverage_class : -1; 2099 err = drv_set_coverage_class(local, coverage_class); 2100 2101 if (err) 2102 return err; 2103 } 2104 2105 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2106 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2107 2108 if (err) 2109 return err; 2110 } 2111 2112 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2113 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2114 return -EINVAL; 2115 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2116 } 2117 if (changed & WIPHY_PARAM_RETRY_LONG) { 2118 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2119 return -EINVAL; 2120 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2121 } 2122 if (changed & 2123 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2124 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2125 2126 return 0; 2127 } 2128 2129 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2130 struct wireless_dev *wdev, 2131 enum nl80211_tx_power_setting type, int mbm) 2132 { 2133 struct ieee80211_local *local = wiphy_priv(wiphy); 2134 struct ieee80211_sub_if_data *sdata; 2135 enum nl80211_tx_power_setting txp_type = type; 2136 bool update_txp_type = false; 2137 2138 if (wdev) { 2139 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2140 2141 switch (type) { 2142 case NL80211_TX_POWER_AUTOMATIC: 2143 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2144 txp_type = NL80211_TX_POWER_LIMITED; 2145 break; 2146 case NL80211_TX_POWER_LIMITED: 2147 case NL80211_TX_POWER_FIXED: 2148 if (mbm < 0 || (mbm % 100)) 2149 return -EOPNOTSUPP; 2150 sdata->user_power_level = MBM_TO_DBM(mbm); 2151 break; 2152 } 2153 2154 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2155 update_txp_type = true; 2156 sdata->vif.bss_conf.txpower_type = txp_type; 2157 } 2158 2159 ieee80211_recalc_txpower(sdata, update_txp_type); 2160 2161 return 0; 2162 } 2163 2164 switch (type) { 2165 case NL80211_TX_POWER_AUTOMATIC: 2166 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2167 txp_type = NL80211_TX_POWER_LIMITED; 2168 break; 2169 case NL80211_TX_POWER_LIMITED: 2170 case NL80211_TX_POWER_FIXED: 2171 if (mbm < 0 || (mbm % 100)) 2172 return -EOPNOTSUPP; 2173 local->user_power_level = MBM_TO_DBM(mbm); 2174 break; 2175 } 2176 2177 mutex_lock(&local->iflist_mtx); 2178 list_for_each_entry(sdata, &local->interfaces, list) { 2179 sdata->user_power_level = local->user_power_level; 2180 if (txp_type != sdata->vif.bss_conf.txpower_type) 2181 update_txp_type = true; 2182 sdata->vif.bss_conf.txpower_type = txp_type; 2183 } 2184 list_for_each_entry(sdata, &local->interfaces, list) 2185 ieee80211_recalc_txpower(sdata, update_txp_type); 2186 mutex_unlock(&local->iflist_mtx); 2187 2188 return 0; 2189 } 2190 2191 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2192 struct wireless_dev *wdev, 2193 int *dbm) 2194 { 2195 struct ieee80211_local *local = wiphy_priv(wiphy); 2196 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2197 2198 if (local->ops->get_txpower) 2199 return drv_get_txpower(local, sdata, dbm); 2200 2201 if (!local->use_chanctx) 2202 *dbm = local->hw.conf.power_level; 2203 else 2204 *dbm = sdata->vif.bss_conf.txpower; 2205 2206 return 0; 2207 } 2208 2209 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2210 const u8 *addr) 2211 { 2212 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2213 2214 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2215 2216 return 0; 2217 } 2218 2219 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2220 { 2221 struct ieee80211_local *local = wiphy_priv(wiphy); 2222 2223 drv_rfkill_poll(local); 2224 } 2225 2226 #ifdef CONFIG_NL80211_TESTMODE 2227 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2228 struct wireless_dev *wdev, 2229 void *data, int len) 2230 { 2231 struct ieee80211_local *local = wiphy_priv(wiphy); 2232 struct ieee80211_vif *vif = NULL; 2233 2234 if (!local->ops->testmode_cmd) 2235 return -EOPNOTSUPP; 2236 2237 if (wdev) { 2238 struct ieee80211_sub_if_data *sdata; 2239 2240 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2241 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2242 vif = &sdata->vif; 2243 } 2244 2245 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2246 } 2247 2248 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2249 struct sk_buff *skb, 2250 struct netlink_callback *cb, 2251 void *data, int len) 2252 { 2253 struct ieee80211_local *local = wiphy_priv(wiphy); 2254 2255 if (!local->ops->testmode_dump) 2256 return -EOPNOTSUPP; 2257 2258 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2259 } 2260 #endif 2261 2262 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2263 enum ieee80211_smps_mode smps_mode) 2264 { 2265 struct sta_info *sta; 2266 enum ieee80211_smps_mode old_req; 2267 2268 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2269 return -EINVAL; 2270 2271 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2272 return 0; 2273 2274 old_req = sdata->u.ap.req_smps; 2275 sdata->u.ap.req_smps = smps_mode; 2276 2277 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2278 if (old_req == smps_mode || 2279 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2280 return 0; 2281 2282 /* If no associated stations, there's no need to do anything */ 2283 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2284 sdata->smps_mode = smps_mode; 2285 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2286 return 0; 2287 } 2288 2289 ht_dbg(sdata, 2290 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2291 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2292 2293 mutex_lock(&sdata->local->sta_mtx); 2294 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2295 /* 2296 * Only stations associated to our AP and 2297 * associated VLANs 2298 */ 2299 if (sta->sdata->bss != &sdata->u.ap) 2300 continue; 2301 2302 /* This station doesn't support MIMO - skip it */ 2303 if (sta_info_tx_streams(sta) == 1) 2304 continue; 2305 2306 /* 2307 * Don't wake up a STA just to send the action frame 2308 * unless we are getting more restrictive. 2309 */ 2310 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2311 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2312 smps_mode)) { 2313 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2314 sta->sta.addr); 2315 continue; 2316 } 2317 2318 /* 2319 * If the STA is not authorized, wait until it gets 2320 * authorized and the action frame will be sent then. 2321 */ 2322 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2323 continue; 2324 2325 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2326 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2327 sdata->vif.bss_conf.bssid); 2328 } 2329 mutex_unlock(&sdata->local->sta_mtx); 2330 2331 sdata->smps_mode = smps_mode; 2332 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2333 2334 return 0; 2335 } 2336 2337 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2338 enum ieee80211_smps_mode smps_mode) 2339 { 2340 const u8 *ap; 2341 enum ieee80211_smps_mode old_req; 2342 int err; 2343 struct sta_info *sta; 2344 bool tdls_peer_found = false; 2345 2346 lockdep_assert_held(&sdata->wdev.mtx); 2347 2348 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2349 return -EINVAL; 2350 2351 old_req = sdata->u.mgd.req_smps; 2352 sdata->u.mgd.req_smps = smps_mode; 2353 2354 if (old_req == smps_mode && 2355 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2356 return 0; 2357 2358 /* 2359 * If not associated, or current association is not an HT 2360 * association, there's no need to do anything, just store 2361 * the new value until we associate. 2362 */ 2363 if (!sdata->u.mgd.associated || 2364 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2365 return 0; 2366 2367 ap = sdata->u.mgd.associated->bssid; 2368 2369 rcu_read_lock(); 2370 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2371 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2372 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2373 continue; 2374 2375 tdls_peer_found = true; 2376 break; 2377 } 2378 rcu_read_unlock(); 2379 2380 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2381 if (tdls_peer_found || !sdata->u.mgd.powersave) 2382 smps_mode = IEEE80211_SMPS_OFF; 2383 else 2384 smps_mode = IEEE80211_SMPS_DYNAMIC; 2385 } 2386 2387 /* send SM PS frame to AP */ 2388 err = ieee80211_send_smps_action(sdata, smps_mode, 2389 ap, ap); 2390 if (err) 2391 sdata->u.mgd.req_smps = old_req; 2392 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2393 ieee80211_teardown_tdls_peers(sdata); 2394 2395 return err; 2396 } 2397 2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2399 bool enabled, int timeout) 2400 { 2401 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2402 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2403 2404 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2405 return -EOPNOTSUPP; 2406 2407 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2408 return -EOPNOTSUPP; 2409 2410 if (enabled == sdata->u.mgd.powersave && 2411 timeout == local->dynamic_ps_forced_timeout) 2412 return 0; 2413 2414 sdata->u.mgd.powersave = enabled; 2415 local->dynamic_ps_forced_timeout = timeout; 2416 2417 /* no change, but if automatic follow powersave */ 2418 sdata_lock(sdata); 2419 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2420 sdata_unlock(sdata); 2421 2422 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2423 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2424 2425 ieee80211_recalc_ps(local); 2426 ieee80211_recalc_ps_vif(sdata); 2427 2428 return 0; 2429 } 2430 2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2432 struct net_device *dev, 2433 s32 rssi_thold, u32 rssi_hyst) 2434 { 2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2436 struct ieee80211_vif *vif = &sdata->vif; 2437 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2438 2439 if (rssi_thold == bss_conf->cqm_rssi_thold && 2440 rssi_hyst == bss_conf->cqm_rssi_hyst) 2441 return 0; 2442 2443 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2444 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2445 return -EOPNOTSUPP; 2446 2447 bss_conf->cqm_rssi_thold = rssi_thold; 2448 bss_conf->cqm_rssi_hyst = rssi_hyst; 2449 sdata->u.mgd.last_cqm_event_signal = 0; 2450 2451 /* tell the driver upon association, unless already associated */ 2452 if (sdata->u.mgd.associated && 2453 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2454 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2455 2456 return 0; 2457 } 2458 2459 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2460 struct net_device *dev, 2461 const u8 *addr, 2462 const struct cfg80211_bitrate_mask *mask) 2463 { 2464 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2465 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2466 int i, ret; 2467 2468 if (!ieee80211_sdata_running(sdata)) 2469 return -ENETDOWN; 2470 2471 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2472 ret = drv_set_bitrate_mask(local, sdata, mask); 2473 if (ret) 2474 return ret; 2475 } 2476 2477 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2478 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2479 int j; 2480 2481 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2482 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2483 sizeof(mask->control[i].ht_mcs)); 2484 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2485 mask->control[i].vht_mcs, 2486 sizeof(mask->control[i].vht_mcs)); 2487 2488 sdata->rc_has_mcs_mask[i] = false; 2489 sdata->rc_has_vht_mcs_mask[i] = false; 2490 if (!sband) 2491 continue; 2492 2493 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2494 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2495 sdata->rc_has_mcs_mask[i] = true; 2496 break; 2497 } 2498 } 2499 2500 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2501 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2502 sdata->rc_has_vht_mcs_mask[i] = true; 2503 break; 2504 } 2505 } 2506 } 2507 2508 return 0; 2509 } 2510 2511 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2512 struct ieee80211_roc_work *new_roc, 2513 struct ieee80211_roc_work *cur_roc) 2514 { 2515 unsigned long now = jiffies; 2516 unsigned long remaining = cur_roc->hw_start_time + 2517 msecs_to_jiffies(cur_roc->duration) - 2518 now; 2519 2520 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2521 return false; 2522 2523 /* if it doesn't fit entirely, schedule a new one */ 2524 if (new_roc->duration > jiffies_to_msecs(remaining)) 2525 return false; 2526 2527 ieee80211_handle_roc_started(new_roc); 2528 2529 /* add to dependents so we send the expired event properly */ 2530 list_add_tail(&new_roc->list, &cur_roc->dependents); 2531 return true; 2532 } 2533 2534 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 2535 { 2536 lockdep_assert_held(&local->mtx); 2537 2538 local->roc_cookie_counter++; 2539 2540 /* wow, you wrapped 64 bits ... more likely a bug */ 2541 if (WARN_ON(local->roc_cookie_counter == 0)) 2542 local->roc_cookie_counter++; 2543 2544 return local->roc_cookie_counter; 2545 } 2546 2547 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2548 struct ieee80211_sub_if_data *sdata, 2549 struct ieee80211_channel *channel, 2550 unsigned int duration, u64 *cookie, 2551 struct sk_buff *txskb, 2552 enum ieee80211_roc_type type) 2553 { 2554 struct ieee80211_roc_work *roc, *tmp; 2555 bool queued = false; 2556 int ret; 2557 2558 lockdep_assert_held(&local->mtx); 2559 2560 if (local->use_chanctx && !local->ops->remain_on_channel) 2561 return -EOPNOTSUPP; 2562 2563 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2564 if (!roc) 2565 return -ENOMEM; 2566 2567 /* 2568 * If the duration is zero, then the driver 2569 * wouldn't actually do anything. Set it to 2570 * 10 for now. 2571 * 2572 * TODO: cancel the off-channel operation 2573 * when we get the SKB's TX status and 2574 * the wait time was zero before. 2575 */ 2576 if (!duration) 2577 duration = 10; 2578 2579 roc->chan = channel; 2580 roc->duration = duration; 2581 roc->req_duration = duration; 2582 roc->frame = txskb; 2583 roc->type = type; 2584 roc->sdata = sdata; 2585 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2586 INIT_LIST_HEAD(&roc->dependents); 2587 2588 /* 2589 * cookie is either the roc cookie (for normal roc) 2590 * or the SKB (for mgmt TX) 2591 */ 2592 if (!txskb) { 2593 roc->cookie = ieee80211_mgmt_tx_cookie(local); 2594 *cookie = roc->cookie; 2595 } else { 2596 roc->mgmt_tx_cookie = *cookie; 2597 } 2598 2599 /* if there's one pending or we're scanning, queue this one */ 2600 if (!list_empty(&local->roc_list) || 2601 local->scanning || ieee80211_is_radar_required(local)) 2602 goto out_check_combine; 2603 2604 /* if not HW assist, just queue & schedule work */ 2605 if (!local->ops->remain_on_channel) { 2606 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2607 goto out_queue; 2608 } 2609 2610 /* otherwise actually kick it off here (for error handling) */ 2611 2612 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2613 if (ret) { 2614 kfree(roc); 2615 return ret; 2616 } 2617 2618 roc->started = true; 2619 goto out_queue; 2620 2621 out_check_combine: 2622 list_for_each_entry(tmp, &local->roc_list, list) { 2623 if (tmp->chan != channel || tmp->sdata != sdata) 2624 continue; 2625 2626 /* 2627 * Extend this ROC if possible: 2628 * 2629 * If it hasn't started yet, just increase the duration 2630 * and add the new one to the list of dependents. 2631 * If the type of the new ROC has higher priority, modify the 2632 * type of the previous one to match that of the new one. 2633 */ 2634 if (!tmp->started) { 2635 list_add_tail(&roc->list, &tmp->dependents); 2636 tmp->duration = max(tmp->duration, roc->duration); 2637 tmp->type = max(tmp->type, roc->type); 2638 queued = true; 2639 break; 2640 } 2641 2642 /* If it has already started, it's more difficult ... */ 2643 if (local->ops->remain_on_channel) { 2644 /* 2645 * In the offloaded ROC case, if it hasn't begun, add 2646 * this new one to the dependent list to be handled 2647 * when the master one begins. If it has begun, 2648 * check if it fits entirely within the existing one, 2649 * in which case it will just be dependent as well. 2650 * Otherwise, schedule it by itself. 2651 */ 2652 if (!tmp->hw_begun) { 2653 list_add_tail(&roc->list, &tmp->dependents); 2654 queued = true; 2655 break; 2656 } 2657 2658 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2659 queued = true; 2660 } else if (del_timer_sync(&tmp->work.timer)) { 2661 unsigned long new_end; 2662 2663 /* 2664 * In the software ROC case, cancel the timer, if 2665 * that fails then the finish work is already 2666 * queued/pending and thus we queue the new ROC 2667 * normally, if that succeeds then we can extend 2668 * the timer duration and TX the frame (if any.) 2669 */ 2670 2671 list_add_tail(&roc->list, &tmp->dependents); 2672 queued = true; 2673 2674 new_end = jiffies + msecs_to_jiffies(roc->duration); 2675 2676 /* ok, it was started & we canceled timer */ 2677 if (time_after(new_end, tmp->work.timer.expires)) 2678 mod_timer(&tmp->work.timer, new_end); 2679 else 2680 add_timer(&tmp->work.timer); 2681 2682 ieee80211_handle_roc_started(roc); 2683 } 2684 break; 2685 } 2686 2687 out_queue: 2688 if (!queued) 2689 list_add_tail(&roc->list, &local->roc_list); 2690 2691 return 0; 2692 } 2693 2694 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2695 struct wireless_dev *wdev, 2696 struct ieee80211_channel *chan, 2697 unsigned int duration, 2698 u64 *cookie) 2699 { 2700 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2701 struct ieee80211_local *local = sdata->local; 2702 int ret; 2703 2704 mutex_lock(&local->mtx); 2705 ret = ieee80211_start_roc_work(local, sdata, chan, 2706 duration, cookie, NULL, 2707 IEEE80211_ROC_TYPE_NORMAL); 2708 mutex_unlock(&local->mtx); 2709 2710 return ret; 2711 } 2712 2713 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2714 u64 cookie, bool mgmt_tx) 2715 { 2716 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2717 int ret; 2718 2719 mutex_lock(&local->mtx); 2720 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2721 struct ieee80211_roc_work *dep, *tmp2; 2722 2723 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2724 if (!mgmt_tx && dep->cookie != cookie) 2725 continue; 2726 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2727 continue; 2728 /* found dependent item -- just remove it */ 2729 list_del(&dep->list); 2730 mutex_unlock(&local->mtx); 2731 2732 ieee80211_roc_notify_destroy(dep, true); 2733 return 0; 2734 } 2735 2736 if (!mgmt_tx && roc->cookie != cookie) 2737 continue; 2738 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2739 continue; 2740 2741 found = roc; 2742 break; 2743 } 2744 2745 if (!found) { 2746 mutex_unlock(&local->mtx); 2747 return -ENOENT; 2748 } 2749 2750 /* 2751 * We found the item to cancel, so do that. Note that it 2752 * may have dependents, which we also cancel (and send 2753 * the expired signal for.) Not doing so would be quite 2754 * tricky here, but we may need to fix it later. 2755 */ 2756 2757 if (local->ops->remain_on_channel) { 2758 if (found->started) { 2759 ret = drv_cancel_remain_on_channel(local); 2760 if (WARN_ON_ONCE(ret)) { 2761 mutex_unlock(&local->mtx); 2762 return ret; 2763 } 2764 } 2765 2766 list_del(&found->list); 2767 2768 if (found->started) 2769 ieee80211_start_next_roc(local); 2770 mutex_unlock(&local->mtx); 2771 2772 ieee80211_roc_notify_destroy(found, true); 2773 } else { 2774 /* work may be pending so use it all the time */ 2775 found->abort = true; 2776 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2777 2778 mutex_unlock(&local->mtx); 2779 2780 /* work will clean up etc */ 2781 flush_delayed_work(&found->work); 2782 WARN_ON(!found->to_be_freed); 2783 kfree(found); 2784 } 2785 2786 return 0; 2787 } 2788 2789 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2790 struct wireless_dev *wdev, 2791 u64 cookie) 2792 { 2793 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2794 struct ieee80211_local *local = sdata->local; 2795 2796 return ieee80211_cancel_roc(local, cookie, false); 2797 } 2798 2799 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2800 struct net_device *dev, 2801 struct cfg80211_chan_def *chandef, 2802 u32 cac_time_ms) 2803 { 2804 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2805 struct ieee80211_local *local = sdata->local; 2806 int err; 2807 2808 mutex_lock(&local->mtx); 2809 if (!list_empty(&local->roc_list) || local->scanning) { 2810 err = -EBUSY; 2811 goto out_unlock; 2812 } 2813 2814 /* whatever, but channel contexts should not complain about that one */ 2815 sdata->smps_mode = IEEE80211_SMPS_OFF; 2816 sdata->needed_rx_chains = local->rx_chains; 2817 2818 err = ieee80211_vif_use_channel(sdata, chandef, 2819 IEEE80211_CHANCTX_SHARED); 2820 if (err) 2821 goto out_unlock; 2822 2823 ieee80211_queue_delayed_work(&sdata->local->hw, 2824 &sdata->dfs_cac_timer_work, 2825 msecs_to_jiffies(cac_time_ms)); 2826 2827 out_unlock: 2828 mutex_unlock(&local->mtx); 2829 return err; 2830 } 2831 2832 static struct cfg80211_beacon_data * 2833 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2834 { 2835 struct cfg80211_beacon_data *new_beacon; 2836 u8 *pos; 2837 int len; 2838 2839 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2840 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2841 beacon->probe_resp_len; 2842 2843 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2844 if (!new_beacon) 2845 return NULL; 2846 2847 pos = (u8 *)(new_beacon + 1); 2848 if (beacon->head_len) { 2849 new_beacon->head_len = beacon->head_len; 2850 new_beacon->head = pos; 2851 memcpy(pos, beacon->head, beacon->head_len); 2852 pos += beacon->head_len; 2853 } 2854 if (beacon->tail_len) { 2855 new_beacon->tail_len = beacon->tail_len; 2856 new_beacon->tail = pos; 2857 memcpy(pos, beacon->tail, beacon->tail_len); 2858 pos += beacon->tail_len; 2859 } 2860 if (beacon->beacon_ies_len) { 2861 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2862 new_beacon->beacon_ies = pos; 2863 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2864 pos += beacon->beacon_ies_len; 2865 } 2866 if (beacon->proberesp_ies_len) { 2867 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2868 new_beacon->proberesp_ies = pos; 2869 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2870 pos += beacon->proberesp_ies_len; 2871 } 2872 if (beacon->assocresp_ies_len) { 2873 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2874 new_beacon->assocresp_ies = pos; 2875 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2876 pos += beacon->assocresp_ies_len; 2877 } 2878 if (beacon->probe_resp_len) { 2879 new_beacon->probe_resp_len = beacon->probe_resp_len; 2880 beacon->probe_resp = pos; 2881 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2882 pos += beacon->probe_resp_len; 2883 } 2884 2885 return new_beacon; 2886 } 2887 2888 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2889 { 2890 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2891 2892 ieee80211_queue_work(&sdata->local->hw, 2893 &sdata->csa_finalize_work); 2894 } 2895 EXPORT_SYMBOL(ieee80211_csa_finish); 2896 2897 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2898 u32 *changed) 2899 { 2900 int err; 2901 2902 switch (sdata->vif.type) { 2903 case NL80211_IFTYPE_AP: 2904 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2905 NULL); 2906 kfree(sdata->u.ap.next_beacon); 2907 sdata->u.ap.next_beacon = NULL; 2908 2909 if (err < 0) 2910 return err; 2911 *changed |= err; 2912 break; 2913 case NL80211_IFTYPE_ADHOC: 2914 err = ieee80211_ibss_finish_csa(sdata); 2915 if (err < 0) 2916 return err; 2917 *changed |= err; 2918 break; 2919 #ifdef CONFIG_MAC80211_MESH 2920 case NL80211_IFTYPE_MESH_POINT: 2921 err = ieee80211_mesh_finish_csa(sdata); 2922 if (err < 0) 2923 return err; 2924 *changed |= err; 2925 break; 2926 #endif 2927 default: 2928 WARN_ON(1); 2929 return -EINVAL; 2930 } 2931 2932 return 0; 2933 } 2934 2935 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2936 { 2937 struct ieee80211_local *local = sdata->local; 2938 u32 changed = 0; 2939 int err; 2940 2941 sdata_assert_lock(sdata); 2942 lockdep_assert_held(&local->mtx); 2943 lockdep_assert_held(&local->chanctx_mtx); 2944 2945 /* 2946 * using reservation isn't immediate as it may be deferred until later 2947 * with multi-vif. once reservation is complete it will re-schedule the 2948 * work with no reserved_chanctx so verify chandef to check if it 2949 * completed successfully 2950 */ 2951 2952 if (sdata->reserved_chanctx) { 2953 /* 2954 * with multi-vif csa driver may call ieee80211_csa_finish() 2955 * many times while waiting for other interfaces to use their 2956 * reservations 2957 */ 2958 if (sdata->reserved_ready) 2959 return 0; 2960 2961 return ieee80211_vif_use_reserved_context(sdata); 2962 } 2963 2964 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2965 &sdata->csa_chandef)) 2966 return -EINVAL; 2967 2968 sdata->vif.csa_active = false; 2969 2970 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2971 if (err) 2972 return err; 2973 2974 ieee80211_bss_info_change_notify(sdata, changed); 2975 2976 if (sdata->csa_block_tx) { 2977 ieee80211_wake_vif_queues(local, sdata, 2978 IEEE80211_QUEUE_STOP_REASON_CSA); 2979 sdata->csa_block_tx = false; 2980 } 2981 2982 err = drv_post_channel_switch(sdata); 2983 if (err) 2984 return err; 2985 2986 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2987 2988 return 0; 2989 } 2990 2991 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2992 { 2993 if (__ieee80211_csa_finalize(sdata)) { 2994 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2995 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2996 GFP_KERNEL); 2997 } 2998 } 2999 3000 void ieee80211_csa_finalize_work(struct work_struct *work) 3001 { 3002 struct ieee80211_sub_if_data *sdata = 3003 container_of(work, struct ieee80211_sub_if_data, 3004 csa_finalize_work); 3005 struct ieee80211_local *local = sdata->local; 3006 3007 sdata_lock(sdata); 3008 mutex_lock(&local->mtx); 3009 mutex_lock(&local->chanctx_mtx); 3010 3011 /* AP might have been stopped while waiting for the lock. */ 3012 if (!sdata->vif.csa_active) 3013 goto unlock; 3014 3015 if (!ieee80211_sdata_running(sdata)) 3016 goto unlock; 3017 3018 ieee80211_csa_finalize(sdata); 3019 3020 unlock: 3021 mutex_unlock(&local->chanctx_mtx); 3022 mutex_unlock(&local->mtx); 3023 sdata_unlock(sdata); 3024 } 3025 3026 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3027 struct cfg80211_csa_settings *params, 3028 u32 *changed) 3029 { 3030 struct ieee80211_csa_settings csa = {}; 3031 int err; 3032 3033 switch (sdata->vif.type) { 3034 case NL80211_IFTYPE_AP: 3035 sdata->u.ap.next_beacon = 3036 cfg80211_beacon_dup(¶ms->beacon_after); 3037 if (!sdata->u.ap.next_beacon) 3038 return -ENOMEM; 3039 3040 /* 3041 * With a count of 0, we don't have to wait for any 3042 * TBTT before switching, so complete the CSA 3043 * immediately. In theory, with a count == 1 we 3044 * should delay the switch until just before the next 3045 * TBTT, but that would complicate things so we switch 3046 * immediately too. If we would delay the switch 3047 * until the next TBTT, we would have to set the probe 3048 * response here. 3049 * 3050 * TODO: A channel switch with count <= 1 without 3051 * sending a CSA action frame is kind of useless, 3052 * because the clients won't know we're changing 3053 * channels. The action frame must be implemented 3054 * either here or in the userspace. 3055 */ 3056 if (params->count <= 1) 3057 break; 3058 3059 if ((params->n_counter_offsets_beacon > 3060 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3061 (params->n_counter_offsets_presp > 3062 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3063 return -EINVAL; 3064 3065 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3066 csa.counter_offsets_presp = params->counter_offsets_presp; 3067 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3068 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3069 csa.count = params->count; 3070 3071 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3072 if (err < 0) { 3073 kfree(sdata->u.ap.next_beacon); 3074 return err; 3075 } 3076 *changed |= err; 3077 3078 break; 3079 case NL80211_IFTYPE_ADHOC: 3080 if (!sdata->vif.bss_conf.ibss_joined) 3081 return -EINVAL; 3082 3083 if (params->chandef.width != sdata->u.ibss.chandef.width) 3084 return -EINVAL; 3085 3086 switch (params->chandef.width) { 3087 case NL80211_CHAN_WIDTH_40: 3088 if (cfg80211_get_chandef_type(¶ms->chandef) != 3089 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3090 return -EINVAL; 3091 case NL80211_CHAN_WIDTH_5: 3092 case NL80211_CHAN_WIDTH_10: 3093 case NL80211_CHAN_WIDTH_20_NOHT: 3094 case NL80211_CHAN_WIDTH_20: 3095 break; 3096 default: 3097 return -EINVAL; 3098 } 3099 3100 /* changes into another band are not supported */ 3101 if (sdata->u.ibss.chandef.chan->band != 3102 params->chandef.chan->band) 3103 return -EINVAL; 3104 3105 /* see comments in the NL80211_IFTYPE_AP block */ 3106 if (params->count > 1) { 3107 err = ieee80211_ibss_csa_beacon(sdata, params); 3108 if (err < 0) 3109 return err; 3110 *changed |= err; 3111 } 3112 3113 ieee80211_send_action_csa(sdata, params); 3114 3115 break; 3116 #ifdef CONFIG_MAC80211_MESH 3117 case NL80211_IFTYPE_MESH_POINT: { 3118 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3119 3120 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3121 return -EINVAL; 3122 3123 /* changes into another band are not supported */ 3124 if (sdata->vif.bss_conf.chandef.chan->band != 3125 params->chandef.chan->band) 3126 return -EINVAL; 3127 3128 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3129 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3130 if (!ifmsh->pre_value) 3131 ifmsh->pre_value = 1; 3132 else 3133 ifmsh->pre_value++; 3134 } 3135 3136 /* see comments in the NL80211_IFTYPE_AP block */ 3137 if (params->count > 1) { 3138 err = ieee80211_mesh_csa_beacon(sdata, params); 3139 if (err < 0) { 3140 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3141 return err; 3142 } 3143 *changed |= err; 3144 } 3145 3146 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3147 ieee80211_send_action_csa(sdata, params); 3148 3149 break; 3150 } 3151 #endif 3152 default: 3153 return -EOPNOTSUPP; 3154 } 3155 3156 return 0; 3157 } 3158 3159 static int 3160 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3161 struct cfg80211_csa_settings *params) 3162 { 3163 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3164 struct ieee80211_local *local = sdata->local; 3165 struct ieee80211_channel_switch ch_switch; 3166 struct ieee80211_chanctx_conf *conf; 3167 struct ieee80211_chanctx *chanctx; 3168 u32 changed = 0; 3169 int err; 3170 3171 sdata_assert_lock(sdata); 3172 lockdep_assert_held(&local->mtx); 3173 3174 if (!list_empty(&local->roc_list) || local->scanning) 3175 return -EBUSY; 3176 3177 if (sdata->wdev.cac_started) 3178 return -EBUSY; 3179 3180 if (cfg80211_chandef_identical(¶ms->chandef, 3181 &sdata->vif.bss_conf.chandef)) 3182 return -EINVAL; 3183 3184 /* don't allow another channel switch if one is already active. */ 3185 if (sdata->vif.csa_active) 3186 return -EBUSY; 3187 3188 mutex_lock(&local->chanctx_mtx); 3189 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3190 lockdep_is_held(&local->chanctx_mtx)); 3191 if (!conf) { 3192 err = -EBUSY; 3193 goto out; 3194 } 3195 3196 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3197 if (!chanctx) { 3198 err = -EBUSY; 3199 goto out; 3200 } 3201 3202 ch_switch.timestamp = 0; 3203 ch_switch.device_timestamp = 0; 3204 ch_switch.block_tx = params->block_tx; 3205 ch_switch.chandef = params->chandef; 3206 ch_switch.count = params->count; 3207 3208 err = drv_pre_channel_switch(sdata, &ch_switch); 3209 if (err) 3210 goto out; 3211 3212 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3213 chanctx->mode, 3214 params->radar_required); 3215 if (err) 3216 goto out; 3217 3218 /* if reservation is invalid then this will fail */ 3219 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3220 if (err) { 3221 ieee80211_vif_unreserve_chanctx(sdata); 3222 goto out; 3223 } 3224 3225 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3226 if (err) { 3227 ieee80211_vif_unreserve_chanctx(sdata); 3228 goto out; 3229 } 3230 3231 sdata->csa_chandef = params->chandef; 3232 sdata->csa_block_tx = params->block_tx; 3233 sdata->vif.csa_active = true; 3234 3235 if (sdata->csa_block_tx) 3236 ieee80211_stop_vif_queues(local, sdata, 3237 IEEE80211_QUEUE_STOP_REASON_CSA); 3238 3239 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3240 params->count); 3241 3242 if (changed) { 3243 ieee80211_bss_info_change_notify(sdata, changed); 3244 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3245 } else { 3246 /* if the beacon didn't change, we can finalize immediately */ 3247 ieee80211_csa_finalize(sdata); 3248 } 3249 3250 out: 3251 mutex_unlock(&local->chanctx_mtx); 3252 return err; 3253 } 3254 3255 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3256 struct cfg80211_csa_settings *params) 3257 { 3258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3259 struct ieee80211_local *local = sdata->local; 3260 int err; 3261 3262 mutex_lock(&local->mtx); 3263 err = __ieee80211_channel_switch(wiphy, dev, params); 3264 mutex_unlock(&local->mtx); 3265 3266 return err; 3267 } 3268 3269 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local, 3270 struct sk_buff *skb, u64 *cookie, 3271 gfp_t gfp) 3272 { 3273 unsigned long spin_flags; 3274 struct sk_buff *ack_skb; 3275 int id; 3276 3277 ack_skb = skb_copy(skb, gfp); 3278 if (!ack_skb) 3279 return ERR_PTR(-ENOMEM); 3280 3281 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3282 id = idr_alloc(&local->ack_status_frames, ack_skb, 3283 1, 0x10000, GFP_ATOMIC); 3284 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3285 3286 if (id < 0) { 3287 kfree_skb(ack_skb); 3288 return ERR_PTR(-ENOMEM); 3289 } 3290 3291 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3292 3293 *cookie = ieee80211_mgmt_tx_cookie(local); 3294 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3295 3296 return ack_skb; 3297 } 3298 3299 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3300 struct cfg80211_mgmt_tx_params *params, 3301 u64 *cookie) 3302 { 3303 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3304 struct ieee80211_local *local = sdata->local; 3305 struct sk_buff *skb, *ack_skb; 3306 struct sta_info *sta; 3307 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3308 bool need_offchan = false; 3309 u32 flags; 3310 int ret; 3311 u8 *data; 3312 3313 if (params->dont_wait_for_ack) 3314 flags = IEEE80211_TX_CTL_NO_ACK; 3315 else 3316 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3317 IEEE80211_TX_CTL_REQ_TX_STATUS; 3318 3319 if (params->no_cck) 3320 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3321 3322 switch (sdata->vif.type) { 3323 case NL80211_IFTYPE_ADHOC: 3324 if (!sdata->vif.bss_conf.ibss_joined) 3325 need_offchan = true; 3326 /* fall through */ 3327 #ifdef CONFIG_MAC80211_MESH 3328 case NL80211_IFTYPE_MESH_POINT: 3329 if (ieee80211_vif_is_mesh(&sdata->vif) && 3330 !sdata->u.mesh.mesh_id_len) 3331 need_offchan = true; 3332 /* fall through */ 3333 #endif 3334 case NL80211_IFTYPE_AP: 3335 case NL80211_IFTYPE_AP_VLAN: 3336 case NL80211_IFTYPE_P2P_GO: 3337 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3338 !ieee80211_vif_is_mesh(&sdata->vif) && 3339 !rcu_access_pointer(sdata->bss->beacon)) 3340 need_offchan = true; 3341 if (!ieee80211_is_action(mgmt->frame_control) || 3342 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3343 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3344 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3345 break; 3346 rcu_read_lock(); 3347 sta = sta_info_get(sdata, mgmt->da); 3348 rcu_read_unlock(); 3349 if (!sta) 3350 return -ENOLINK; 3351 break; 3352 case NL80211_IFTYPE_STATION: 3353 case NL80211_IFTYPE_P2P_CLIENT: 3354 sdata_lock(sdata); 3355 if (!sdata->u.mgd.associated || 3356 (params->offchan && params->wait && 3357 local->ops->remain_on_channel && 3358 memcmp(sdata->u.mgd.associated->bssid, 3359 mgmt->bssid, ETH_ALEN))) 3360 need_offchan = true; 3361 sdata_unlock(sdata); 3362 break; 3363 case NL80211_IFTYPE_P2P_DEVICE: 3364 need_offchan = true; 3365 break; 3366 default: 3367 return -EOPNOTSUPP; 3368 } 3369 3370 /* configurations requiring offchan cannot work if no channel has been 3371 * specified 3372 */ 3373 if (need_offchan && !params->chan) 3374 return -EINVAL; 3375 3376 mutex_lock(&local->mtx); 3377 3378 /* Check if the operating channel is the requested channel */ 3379 if (!need_offchan) { 3380 struct ieee80211_chanctx_conf *chanctx_conf; 3381 3382 rcu_read_lock(); 3383 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3384 3385 if (chanctx_conf) { 3386 need_offchan = params->chan && 3387 (params->chan != 3388 chanctx_conf->def.chan); 3389 } else if (!params->chan) { 3390 ret = -EINVAL; 3391 rcu_read_unlock(); 3392 goto out_unlock; 3393 } else { 3394 need_offchan = true; 3395 } 3396 rcu_read_unlock(); 3397 } 3398 3399 if (need_offchan && !params->offchan) { 3400 ret = -EBUSY; 3401 goto out_unlock; 3402 } 3403 3404 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3405 if (!skb) { 3406 ret = -ENOMEM; 3407 goto out_unlock; 3408 } 3409 skb_reserve(skb, local->hw.extra_tx_headroom); 3410 3411 data = skb_put(skb, params->len); 3412 memcpy(data, params->buf, params->len); 3413 3414 /* Update CSA counters */ 3415 if (sdata->vif.csa_active && 3416 (sdata->vif.type == NL80211_IFTYPE_AP || 3417 sdata->vif.type == NL80211_IFTYPE_MESH_POINT || 3418 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3419 params->n_csa_offsets) { 3420 int i; 3421 struct beacon_data *beacon = NULL; 3422 3423 rcu_read_lock(); 3424 3425 if (sdata->vif.type == NL80211_IFTYPE_AP) 3426 beacon = rcu_dereference(sdata->u.ap.beacon); 3427 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3428 beacon = rcu_dereference(sdata->u.ibss.presp); 3429 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3430 beacon = rcu_dereference(sdata->u.mesh.beacon); 3431 3432 if (beacon) 3433 for (i = 0; i < params->n_csa_offsets; i++) 3434 data[params->csa_offsets[i]] = 3435 beacon->csa_current_counter; 3436 3437 rcu_read_unlock(); 3438 } 3439 3440 IEEE80211_SKB_CB(skb)->flags = flags; 3441 3442 skb->dev = sdata->dev; 3443 3444 if (!params->dont_wait_for_ack) { 3445 /* make a copy to preserve the frame contents 3446 * in case of encryption. 3447 */ 3448 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, 3449 GFP_KERNEL); 3450 if (IS_ERR(ack_skb)) { 3451 ret = PTR_ERR(ack_skb); 3452 kfree_skb(skb); 3453 goto out_unlock; 3454 } 3455 } else { 3456 /* Assign a dummy non-zero cookie, it's not sent to 3457 * userspace in this case but we rely on its value 3458 * internally in the need_offchan case to distinguish 3459 * mgmt-tx from remain-on-channel. 3460 */ 3461 *cookie = 0xffffffff; 3462 } 3463 3464 if (!need_offchan) { 3465 ieee80211_tx_skb(sdata, skb); 3466 ret = 0; 3467 goto out_unlock; 3468 } 3469 3470 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3471 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3472 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 3473 IEEE80211_SKB_CB(skb)->hw_queue = 3474 local->hw.offchannel_tx_hw_queue; 3475 3476 /* This will handle all kinds of coalescing and immediate TX */ 3477 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3478 params->wait, cookie, skb, 3479 IEEE80211_ROC_TYPE_MGMT_TX); 3480 if (ret) 3481 kfree_skb(skb); 3482 out_unlock: 3483 mutex_unlock(&local->mtx); 3484 return ret; 3485 } 3486 3487 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3488 struct wireless_dev *wdev, 3489 u64 cookie) 3490 { 3491 struct ieee80211_local *local = wiphy_priv(wiphy); 3492 3493 return ieee80211_cancel_roc(local, cookie, true); 3494 } 3495 3496 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3497 struct wireless_dev *wdev, 3498 u16 frame_type, bool reg) 3499 { 3500 struct ieee80211_local *local = wiphy_priv(wiphy); 3501 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3502 3503 switch (frame_type) { 3504 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3505 if (reg) { 3506 local->probe_req_reg++; 3507 sdata->vif.probe_req_reg++; 3508 } else { 3509 if (local->probe_req_reg) 3510 local->probe_req_reg--; 3511 3512 if (sdata->vif.probe_req_reg) 3513 sdata->vif.probe_req_reg--; 3514 } 3515 3516 if (!local->open_count) 3517 break; 3518 3519 if (sdata->vif.probe_req_reg == 1) 3520 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3521 FIF_PROBE_REQ); 3522 else if (sdata->vif.probe_req_reg == 0) 3523 drv_config_iface_filter(local, sdata, 0, 3524 FIF_PROBE_REQ); 3525 3526 ieee80211_configure_filter(local); 3527 break; 3528 default: 3529 break; 3530 } 3531 } 3532 3533 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3534 { 3535 struct ieee80211_local *local = wiphy_priv(wiphy); 3536 3537 if (local->started) 3538 return -EOPNOTSUPP; 3539 3540 return drv_set_antenna(local, tx_ant, rx_ant); 3541 } 3542 3543 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3544 { 3545 struct ieee80211_local *local = wiphy_priv(wiphy); 3546 3547 return drv_get_antenna(local, tx_ant, rx_ant); 3548 } 3549 3550 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3551 struct net_device *dev, 3552 struct cfg80211_gtk_rekey_data *data) 3553 { 3554 struct ieee80211_local *local = wiphy_priv(wiphy); 3555 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3556 3557 if (!local->ops->set_rekey_data) 3558 return -EOPNOTSUPP; 3559 3560 drv_set_rekey_data(local, sdata, data); 3561 3562 return 0; 3563 } 3564 3565 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3566 const u8 *peer, u64 *cookie) 3567 { 3568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3569 struct ieee80211_local *local = sdata->local; 3570 struct ieee80211_qos_hdr *nullfunc; 3571 struct sk_buff *skb, *ack_skb; 3572 int size = sizeof(*nullfunc); 3573 __le16 fc; 3574 bool qos; 3575 struct ieee80211_tx_info *info; 3576 struct sta_info *sta; 3577 struct ieee80211_chanctx_conf *chanctx_conf; 3578 enum ieee80211_band band; 3579 int ret; 3580 3581 /* the lock is needed to assign the cookie later */ 3582 mutex_lock(&local->mtx); 3583 3584 rcu_read_lock(); 3585 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3586 if (WARN_ON(!chanctx_conf)) { 3587 ret = -EINVAL; 3588 goto unlock; 3589 } 3590 band = chanctx_conf->def.chan->band; 3591 sta = sta_info_get_bss(sdata, peer); 3592 if (sta) { 3593 qos = sta->sta.wme; 3594 } else { 3595 ret = -ENOLINK; 3596 goto unlock; 3597 } 3598 3599 if (qos) { 3600 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3601 IEEE80211_STYPE_QOS_NULLFUNC | 3602 IEEE80211_FCTL_FROMDS); 3603 } else { 3604 size -= 2; 3605 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3606 IEEE80211_STYPE_NULLFUNC | 3607 IEEE80211_FCTL_FROMDS); 3608 } 3609 3610 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3611 if (!skb) { 3612 ret = -ENOMEM; 3613 goto unlock; 3614 } 3615 3616 skb->dev = dev; 3617 3618 skb_reserve(skb, local->hw.extra_tx_headroom); 3619 3620 nullfunc = (void *) skb_put(skb, size); 3621 nullfunc->frame_control = fc; 3622 nullfunc->duration_id = 0; 3623 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3624 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3625 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3626 nullfunc->seq_ctrl = 0; 3627 3628 info = IEEE80211_SKB_CB(skb); 3629 3630 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3631 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3632 info->band = band; 3633 3634 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3635 skb->priority = 7; 3636 if (qos) 3637 nullfunc->qos_ctrl = cpu_to_le16(7); 3638 3639 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC); 3640 if (IS_ERR(ack_skb)) { 3641 kfree_skb(skb); 3642 ret = PTR_ERR(ack_skb); 3643 goto unlock; 3644 } 3645 3646 local_bh_disable(); 3647 ieee80211_xmit(sdata, sta, skb); 3648 local_bh_enable(); 3649 3650 ret = 0; 3651 unlock: 3652 rcu_read_unlock(); 3653 mutex_unlock(&local->mtx); 3654 3655 return ret; 3656 } 3657 3658 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3659 struct wireless_dev *wdev, 3660 struct cfg80211_chan_def *chandef) 3661 { 3662 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3663 struct ieee80211_local *local = wiphy_priv(wiphy); 3664 struct ieee80211_chanctx_conf *chanctx_conf; 3665 int ret = -ENODATA; 3666 3667 rcu_read_lock(); 3668 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3669 if (chanctx_conf) { 3670 *chandef = sdata->vif.bss_conf.chandef; 3671 ret = 0; 3672 } else if (local->open_count > 0 && 3673 local->open_count == local->monitors && 3674 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3675 if (local->use_chanctx) 3676 *chandef = local->monitor_chandef; 3677 else 3678 *chandef = local->_oper_chandef; 3679 ret = 0; 3680 } 3681 rcu_read_unlock(); 3682 3683 return ret; 3684 } 3685 3686 #ifdef CONFIG_PM 3687 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3688 { 3689 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3690 } 3691 #endif 3692 3693 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3694 struct net_device *dev, 3695 struct cfg80211_qos_map *qos_map) 3696 { 3697 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3698 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3699 3700 if (qos_map) { 3701 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3702 if (!new_qos_map) 3703 return -ENOMEM; 3704 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3705 } else { 3706 /* A NULL qos_map was passed to disable QoS mapping */ 3707 new_qos_map = NULL; 3708 } 3709 3710 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3711 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3712 if (old_qos_map) 3713 kfree_rcu(old_qos_map, rcu_head); 3714 3715 return 0; 3716 } 3717 3718 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3719 struct net_device *dev, 3720 struct cfg80211_chan_def *chandef) 3721 { 3722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3723 int ret; 3724 u32 changed = 0; 3725 3726 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3727 if (ret == 0) 3728 ieee80211_bss_info_change_notify(sdata, changed); 3729 3730 return ret; 3731 } 3732 3733 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3734 u8 tsid, const u8 *peer, u8 up, 3735 u16 admitted_time) 3736 { 3737 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3738 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3739 int ac = ieee802_1d_to_ac[up]; 3740 3741 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3742 return -EOPNOTSUPP; 3743 3744 if (!(sdata->wmm_acm & BIT(up))) 3745 return -EINVAL; 3746 3747 if (ifmgd->tx_tspec[ac].admitted_time) 3748 return -EBUSY; 3749 3750 if (admitted_time) { 3751 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3752 ifmgd->tx_tspec[ac].tsid = tsid; 3753 ifmgd->tx_tspec[ac].up = up; 3754 } 3755 3756 return 0; 3757 } 3758 3759 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3760 u8 tsid, const u8 *peer) 3761 { 3762 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3763 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3764 struct ieee80211_local *local = wiphy_priv(wiphy); 3765 int ac; 3766 3767 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3768 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3769 3770 /* skip unused entries */ 3771 if (!tx_tspec->admitted_time) 3772 continue; 3773 3774 if (tx_tspec->tsid != tsid) 3775 continue; 3776 3777 /* due to this new packets will be reassigned to non-ACM ACs */ 3778 tx_tspec->up = -1; 3779 3780 /* Make sure that all packets have been sent to avoid to 3781 * restore the QoS params on packets that are still on the 3782 * queues. 3783 */ 3784 synchronize_net(); 3785 ieee80211_flush_queues(local, sdata, false); 3786 3787 /* restore the normal QoS parameters 3788 * (unconditionally to avoid races) 3789 */ 3790 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3791 tx_tspec->downgraded = false; 3792 ieee80211_sta_handle_tspec_ac_params(sdata); 3793 3794 /* finally clear all the data */ 3795 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3796 3797 return 0; 3798 } 3799 3800 return -ENOENT; 3801 } 3802 3803 const struct cfg80211_ops mac80211_config_ops = { 3804 .add_virtual_intf = ieee80211_add_iface, 3805 .del_virtual_intf = ieee80211_del_iface, 3806 .change_virtual_intf = ieee80211_change_iface, 3807 .start_p2p_device = ieee80211_start_p2p_device, 3808 .stop_p2p_device = ieee80211_stop_p2p_device, 3809 .add_key = ieee80211_add_key, 3810 .del_key = ieee80211_del_key, 3811 .get_key = ieee80211_get_key, 3812 .set_default_key = ieee80211_config_default_key, 3813 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3814 .start_ap = ieee80211_start_ap, 3815 .change_beacon = ieee80211_change_beacon, 3816 .stop_ap = ieee80211_stop_ap, 3817 .add_station = ieee80211_add_station, 3818 .del_station = ieee80211_del_station, 3819 .change_station = ieee80211_change_station, 3820 .get_station = ieee80211_get_station, 3821 .dump_station = ieee80211_dump_station, 3822 .dump_survey = ieee80211_dump_survey, 3823 #ifdef CONFIG_MAC80211_MESH 3824 .add_mpath = ieee80211_add_mpath, 3825 .del_mpath = ieee80211_del_mpath, 3826 .change_mpath = ieee80211_change_mpath, 3827 .get_mpath = ieee80211_get_mpath, 3828 .dump_mpath = ieee80211_dump_mpath, 3829 .get_mpp = ieee80211_get_mpp, 3830 .dump_mpp = ieee80211_dump_mpp, 3831 .update_mesh_config = ieee80211_update_mesh_config, 3832 .get_mesh_config = ieee80211_get_mesh_config, 3833 .join_mesh = ieee80211_join_mesh, 3834 .leave_mesh = ieee80211_leave_mesh, 3835 #endif 3836 .join_ocb = ieee80211_join_ocb, 3837 .leave_ocb = ieee80211_leave_ocb, 3838 .change_bss = ieee80211_change_bss, 3839 .set_txq_params = ieee80211_set_txq_params, 3840 .set_monitor_channel = ieee80211_set_monitor_channel, 3841 .suspend = ieee80211_suspend, 3842 .resume = ieee80211_resume, 3843 .scan = ieee80211_scan, 3844 .sched_scan_start = ieee80211_sched_scan_start, 3845 .sched_scan_stop = ieee80211_sched_scan_stop, 3846 .auth = ieee80211_auth, 3847 .assoc = ieee80211_assoc, 3848 .deauth = ieee80211_deauth, 3849 .disassoc = ieee80211_disassoc, 3850 .join_ibss = ieee80211_join_ibss, 3851 .leave_ibss = ieee80211_leave_ibss, 3852 .set_mcast_rate = ieee80211_set_mcast_rate, 3853 .set_wiphy_params = ieee80211_set_wiphy_params, 3854 .set_tx_power = ieee80211_set_tx_power, 3855 .get_tx_power = ieee80211_get_tx_power, 3856 .set_wds_peer = ieee80211_set_wds_peer, 3857 .rfkill_poll = ieee80211_rfkill_poll, 3858 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3859 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3860 .set_power_mgmt = ieee80211_set_power_mgmt, 3861 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3862 .remain_on_channel = ieee80211_remain_on_channel, 3863 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3864 .mgmt_tx = ieee80211_mgmt_tx, 3865 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3866 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3867 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3868 .set_antenna = ieee80211_set_antenna, 3869 .get_antenna = ieee80211_get_antenna, 3870 .set_rekey_data = ieee80211_set_rekey_data, 3871 .tdls_oper = ieee80211_tdls_oper, 3872 .tdls_mgmt = ieee80211_tdls_mgmt, 3873 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3874 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3875 .probe_client = ieee80211_probe_client, 3876 .set_noack_map = ieee80211_set_noack_map, 3877 #ifdef CONFIG_PM 3878 .set_wakeup = ieee80211_set_wakeup, 3879 #endif 3880 .get_channel = ieee80211_cfg_get_channel, 3881 .start_radar_detection = ieee80211_start_radar_detection, 3882 .channel_switch = ieee80211_channel_switch, 3883 .set_qos_map = ieee80211_set_qos_map, 3884 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3885 .add_tx_ts = ieee80211_add_tx_ts, 3886 .del_tx_ts = ieee80211_del_tx_ts, 3887 }; 3888