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 ieee80211_check_fast_rx_iface(sdata); 71 } else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) { 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 } 75 76 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 77 struct ieee80211_local *local = sdata->local; 78 79 if (ieee80211_sdata_running(sdata)) { 80 u32 mask = MONITOR_FLAG_COOK_FRAMES | 81 MONITOR_FLAG_ACTIVE; 82 83 /* 84 * Prohibit MONITOR_FLAG_COOK_FRAMES and 85 * MONITOR_FLAG_ACTIVE to be changed while the 86 * interface is up. 87 * Else we would need to add a lot of cruft 88 * to update everything: 89 * cooked_mntrs, monitor and all fif_* counters 90 * reconfigure hardware 91 */ 92 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 93 return -EBUSY; 94 95 ieee80211_adjust_monitor_flags(sdata, -1); 96 sdata->u.mntr_flags = *flags; 97 ieee80211_adjust_monitor_flags(sdata, 1); 98 99 ieee80211_configure_filter(local); 100 } else { 101 /* 102 * Because the interface is down, ieee80211_do_stop 103 * and ieee80211_do_open take care of "everything" 104 * mentioned in the comment above. 105 */ 106 sdata->u.mntr_flags = *flags; 107 } 108 } 109 110 return 0; 111 } 112 113 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 114 struct wireless_dev *wdev) 115 { 116 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 117 int ret; 118 119 mutex_lock(&sdata->local->chanctx_mtx); 120 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 121 mutex_unlock(&sdata->local->chanctx_mtx); 122 if (ret < 0) 123 return ret; 124 125 return ieee80211_do_open(wdev, true); 126 } 127 128 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 129 struct wireless_dev *wdev) 130 { 131 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 132 } 133 134 static int ieee80211_set_noack_map(struct wiphy *wiphy, 135 struct net_device *dev, 136 u16 noack_map) 137 { 138 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 139 140 sdata->noack_map = noack_map; 141 142 ieee80211_check_fast_xmit_iface(sdata); 143 144 return 0; 145 } 146 147 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 148 u8 key_idx, bool pairwise, const u8 *mac_addr, 149 struct key_params *params) 150 { 151 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 152 struct ieee80211_local *local = sdata->local; 153 struct sta_info *sta = NULL; 154 const struct ieee80211_cipher_scheme *cs = NULL; 155 struct ieee80211_key *key; 156 int err; 157 158 if (!ieee80211_sdata_running(sdata)) 159 return -ENETDOWN; 160 161 /* reject WEP and TKIP keys if WEP failed to initialize */ 162 switch (params->cipher) { 163 case WLAN_CIPHER_SUITE_WEP40: 164 case WLAN_CIPHER_SUITE_TKIP: 165 case WLAN_CIPHER_SUITE_WEP104: 166 if (IS_ERR(local->wep_tx_tfm)) 167 return -EINVAL; 168 break; 169 case WLAN_CIPHER_SUITE_CCMP: 170 case WLAN_CIPHER_SUITE_CCMP_256: 171 case WLAN_CIPHER_SUITE_AES_CMAC: 172 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 173 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 174 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 175 case WLAN_CIPHER_SUITE_GCMP: 176 case WLAN_CIPHER_SUITE_GCMP_256: 177 break; 178 default: 179 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 180 break; 181 } 182 183 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 184 params->key, params->seq_len, params->seq, 185 cs); 186 if (IS_ERR(key)) 187 return PTR_ERR(key); 188 189 if (pairwise) 190 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 191 192 mutex_lock(&local->sta_mtx); 193 194 if (mac_addr) { 195 if (ieee80211_vif_is_mesh(&sdata->vif)) 196 sta = sta_info_get(sdata, mac_addr); 197 else 198 sta = sta_info_get_bss(sdata, mac_addr); 199 /* 200 * The ASSOC test makes sure the driver is ready to 201 * receive the key. When wpa_supplicant has roamed 202 * using FT, it attempts to set the key before 203 * association has completed, this rejects that attempt 204 * so it will set the key again after association. 205 * 206 * TODO: accept the key if we have a station entry and 207 * add it to the device after the station. 208 */ 209 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 210 ieee80211_key_free_unused(key); 211 err = -ENOENT; 212 goto out_unlock; 213 } 214 } 215 216 switch (sdata->vif.type) { 217 case NL80211_IFTYPE_STATION: 218 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 219 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 220 break; 221 case NL80211_IFTYPE_AP: 222 case NL80211_IFTYPE_AP_VLAN: 223 /* Keys without a station are used for TX only */ 224 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 225 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 226 break; 227 case NL80211_IFTYPE_ADHOC: 228 /* no MFP (yet) */ 229 break; 230 case NL80211_IFTYPE_MESH_POINT: 231 #ifdef CONFIG_MAC80211_MESH 232 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 233 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 234 break; 235 #endif 236 case NL80211_IFTYPE_WDS: 237 case NL80211_IFTYPE_MONITOR: 238 case NL80211_IFTYPE_P2P_DEVICE: 239 case NL80211_IFTYPE_UNSPECIFIED: 240 case NUM_NL80211_IFTYPES: 241 case NL80211_IFTYPE_P2P_CLIENT: 242 case NL80211_IFTYPE_P2P_GO: 243 case NL80211_IFTYPE_OCB: 244 /* shouldn't happen */ 245 WARN_ON_ONCE(1); 246 break; 247 } 248 249 if (sta) 250 sta->cipher_scheme = cs; 251 252 err = ieee80211_key_link(key, sdata, sta); 253 254 out_unlock: 255 mutex_unlock(&local->sta_mtx); 256 257 return err; 258 } 259 260 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 261 u8 key_idx, bool pairwise, const u8 *mac_addr) 262 { 263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 264 struct ieee80211_local *local = sdata->local; 265 struct sta_info *sta; 266 struct ieee80211_key *key = NULL; 267 int ret; 268 269 mutex_lock(&local->sta_mtx); 270 mutex_lock(&local->key_mtx); 271 272 if (mac_addr) { 273 ret = -ENOENT; 274 275 sta = sta_info_get_bss(sdata, mac_addr); 276 if (!sta) 277 goto out_unlock; 278 279 if (pairwise) 280 key = key_mtx_dereference(local, sta->ptk[key_idx]); 281 else 282 key = key_mtx_dereference(local, sta->gtk[key_idx]); 283 } else 284 key = key_mtx_dereference(local, sdata->keys[key_idx]); 285 286 if (!key) { 287 ret = -ENOENT; 288 goto out_unlock; 289 } 290 291 ieee80211_key_free(key, true); 292 293 ret = 0; 294 out_unlock: 295 mutex_unlock(&local->key_mtx); 296 mutex_unlock(&local->sta_mtx); 297 298 return ret; 299 } 300 301 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 302 u8 key_idx, bool pairwise, const u8 *mac_addr, 303 void *cookie, 304 void (*callback)(void *cookie, 305 struct key_params *params)) 306 { 307 struct ieee80211_sub_if_data *sdata; 308 struct sta_info *sta = NULL; 309 u8 seq[6] = {0}; 310 struct key_params params; 311 struct ieee80211_key *key = NULL; 312 u64 pn64; 313 u32 iv32; 314 u16 iv16; 315 int err = -ENOENT; 316 struct ieee80211_key_seq kseq = {}; 317 318 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 319 320 rcu_read_lock(); 321 322 if (mac_addr) { 323 sta = sta_info_get_bss(sdata, mac_addr); 324 if (!sta) 325 goto out; 326 327 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 328 key = rcu_dereference(sta->ptk[key_idx]); 329 else if (!pairwise && 330 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 331 key = rcu_dereference(sta->gtk[key_idx]); 332 } else 333 key = rcu_dereference(sdata->keys[key_idx]); 334 335 if (!key) 336 goto out; 337 338 memset(¶ms, 0, sizeof(params)); 339 340 params.cipher = key->conf.cipher; 341 342 switch (key->conf.cipher) { 343 case WLAN_CIPHER_SUITE_TKIP: 344 pn64 = atomic64_read(&key->conf.tx_pn); 345 iv32 = TKIP_PN_TO_IV32(pn64); 346 iv16 = TKIP_PN_TO_IV16(pn64); 347 348 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 349 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 350 drv_get_key_seq(sdata->local, key, &kseq); 351 iv32 = kseq.tkip.iv32; 352 iv16 = kseq.tkip.iv16; 353 } 354 355 seq[0] = iv16 & 0xff; 356 seq[1] = (iv16 >> 8) & 0xff; 357 seq[2] = iv32 & 0xff; 358 seq[3] = (iv32 >> 8) & 0xff; 359 seq[4] = (iv32 >> 16) & 0xff; 360 seq[5] = (iv32 >> 24) & 0xff; 361 params.seq = seq; 362 params.seq_len = 6; 363 break; 364 case WLAN_CIPHER_SUITE_CCMP: 365 case WLAN_CIPHER_SUITE_CCMP_256: 366 case WLAN_CIPHER_SUITE_AES_CMAC: 367 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 368 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 369 offsetof(typeof(kseq), aes_cmac)); 370 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 371 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 372 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 373 offsetof(typeof(kseq), aes_gmac)); 374 case WLAN_CIPHER_SUITE_GCMP: 375 case WLAN_CIPHER_SUITE_GCMP_256: 376 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 377 offsetof(typeof(kseq), gcmp)); 378 379 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 380 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 381 drv_get_key_seq(sdata->local, key, &kseq); 382 memcpy(seq, kseq.ccmp.pn, 6); 383 } else { 384 pn64 = atomic64_read(&key->conf.tx_pn); 385 seq[0] = pn64; 386 seq[1] = pn64 >> 8; 387 seq[2] = pn64 >> 16; 388 seq[3] = pn64 >> 24; 389 seq[4] = pn64 >> 32; 390 seq[5] = pn64 >> 40; 391 } 392 params.seq = seq; 393 params.seq_len = 6; 394 break; 395 default: 396 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 397 break; 398 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 399 break; 400 drv_get_key_seq(sdata->local, key, &kseq); 401 params.seq = kseq.hw.seq; 402 params.seq_len = kseq.hw.seq_len; 403 break; 404 } 405 406 params.key = key->conf.key; 407 params.key_len = key->conf.keylen; 408 409 callback(cookie, ¶ms); 410 err = 0; 411 412 out: 413 rcu_read_unlock(); 414 return err; 415 } 416 417 static int ieee80211_config_default_key(struct wiphy *wiphy, 418 struct net_device *dev, 419 u8 key_idx, bool uni, 420 bool multi) 421 { 422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 423 424 ieee80211_set_default_key(sdata, key_idx, uni, multi); 425 426 return 0; 427 } 428 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 430 struct net_device *dev, 431 u8 key_idx) 432 { 433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 434 435 ieee80211_set_default_mgmt_key(sdata, key_idx); 436 437 return 0; 438 } 439 440 void sta_set_rate_info_tx(struct sta_info *sta, 441 const struct ieee80211_tx_rate *rate, 442 struct rate_info *rinfo) 443 { 444 rinfo->flags = 0; 445 if (rate->flags & IEEE80211_TX_RC_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_MCS; 447 rinfo->mcs = rate->idx; 448 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 449 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 450 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 451 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 452 } else { 453 struct ieee80211_supported_band *sband; 454 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 455 u16 brate; 456 457 sband = sta->local->hw.wiphy->bands[ 458 ieee80211_get_sdata_band(sta->sdata)]; 459 brate = sband->bitrates[rate->idx].bitrate; 460 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 461 } 462 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_40; 464 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_80; 466 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 467 rinfo->bw = RATE_INFO_BW_160; 468 else 469 rinfo->bw = RATE_INFO_BW_20; 470 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 471 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 472 } 473 474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 475 int idx, u8 *mac, struct station_info *sinfo) 476 { 477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 478 struct ieee80211_local *local = sdata->local; 479 struct sta_info *sta; 480 int ret = -ENOENT; 481 482 mutex_lock(&local->sta_mtx); 483 484 sta = sta_info_get_by_idx(sdata, idx); 485 if (sta) { 486 ret = 0; 487 memcpy(mac, sta->sta.addr, ETH_ALEN); 488 sta_set_sinfo(sta, sinfo); 489 } 490 491 mutex_unlock(&local->sta_mtx); 492 493 return ret; 494 } 495 496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 497 int idx, struct survey_info *survey) 498 { 499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 500 501 return drv_get_survey(local, idx, survey); 502 } 503 504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 505 const u8 *mac, struct station_info *sinfo) 506 { 507 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 508 struct ieee80211_local *local = sdata->local; 509 struct sta_info *sta; 510 int ret = -ENOENT; 511 512 mutex_lock(&local->sta_mtx); 513 514 sta = sta_info_get_bss(sdata, mac); 515 if (sta) { 516 ret = 0; 517 sta_set_sinfo(sta, sinfo); 518 } 519 520 mutex_unlock(&local->sta_mtx); 521 522 return ret; 523 } 524 525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 526 struct cfg80211_chan_def *chandef) 527 { 528 struct ieee80211_local *local = wiphy_priv(wiphy); 529 struct ieee80211_sub_if_data *sdata; 530 int ret = 0; 531 532 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 533 return 0; 534 535 mutex_lock(&local->mtx); 536 mutex_lock(&local->iflist_mtx); 537 if (local->use_chanctx) { 538 sdata = rcu_dereference_protected( 539 local->monitor_sdata, 540 lockdep_is_held(&local->iflist_mtx)); 541 if (sdata) { 542 ieee80211_vif_release_channel(sdata); 543 ret = ieee80211_vif_use_channel(sdata, chandef, 544 IEEE80211_CHANCTX_EXCLUSIVE); 545 } 546 } else if (local->open_count == local->monitors) { 547 local->_oper_chandef = *chandef; 548 ieee80211_hw_config(local, 0); 549 } 550 551 if (ret == 0) 552 local->monitor_chandef = *chandef; 553 mutex_unlock(&local->iflist_mtx); 554 mutex_unlock(&local->mtx); 555 556 return ret; 557 } 558 559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 560 const u8 *resp, size_t resp_len, 561 const struct ieee80211_csa_settings *csa) 562 { 563 struct probe_resp *new, *old; 564 565 if (!resp || !resp_len) 566 return 1; 567 568 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 569 570 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 571 if (!new) 572 return -ENOMEM; 573 574 new->len = resp_len; 575 memcpy(new->data, resp, resp_len); 576 577 if (csa) 578 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 579 csa->n_counter_offsets_presp * 580 sizeof(new->csa_counter_offsets[0])); 581 582 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 583 if (old) 584 kfree_rcu(old, rcu_head); 585 586 return 0; 587 } 588 589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 590 struct cfg80211_beacon_data *params, 591 const struct ieee80211_csa_settings *csa) 592 { 593 struct beacon_data *new, *old; 594 int new_head_len, new_tail_len; 595 int size, err; 596 u32 changed = BSS_CHANGED_BEACON; 597 598 old = sdata_dereference(sdata->u.ap.beacon, sdata); 599 600 601 /* Need to have a beacon head if we don't have one yet */ 602 if (!params->head && !old) 603 return -EINVAL; 604 605 /* new or old head? */ 606 if (params->head) 607 new_head_len = params->head_len; 608 else 609 new_head_len = old->head_len; 610 611 /* new or old tail? */ 612 if (params->tail || !old) 613 /* params->tail_len will be zero for !params->tail */ 614 new_tail_len = params->tail_len; 615 else 616 new_tail_len = old->tail_len; 617 618 size = sizeof(*new) + new_head_len + new_tail_len; 619 620 new = kzalloc(size, GFP_KERNEL); 621 if (!new) 622 return -ENOMEM; 623 624 /* start filling the new info now */ 625 626 /* 627 * pointers go into the block we allocated, 628 * memory is | beacon_data | head | tail | 629 */ 630 new->head = ((u8 *) new) + sizeof(*new); 631 new->tail = new->head + new_head_len; 632 new->head_len = new_head_len; 633 new->tail_len = new_tail_len; 634 635 if (csa) { 636 new->csa_current_counter = csa->count; 637 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 638 csa->n_counter_offsets_beacon * 639 sizeof(new->csa_counter_offsets[0])); 640 } 641 642 /* copy in head */ 643 if (params->head) 644 memcpy(new->head, params->head, new_head_len); 645 else 646 memcpy(new->head, old->head, new_head_len); 647 648 /* copy in optional tail */ 649 if (params->tail) 650 memcpy(new->tail, params->tail, new_tail_len); 651 else 652 if (old) 653 memcpy(new->tail, old->tail, new_tail_len); 654 655 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 656 params->probe_resp_len, csa); 657 if (err < 0) 658 return err; 659 if (err == 0) 660 changed |= BSS_CHANGED_AP_PROBE_RESP; 661 662 rcu_assign_pointer(sdata->u.ap.beacon, new); 663 664 if (old) 665 kfree_rcu(old, rcu_head); 666 667 return changed; 668 } 669 670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 671 struct cfg80211_ap_settings *params) 672 { 673 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 674 struct ieee80211_local *local = sdata->local; 675 struct beacon_data *old; 676 struct ieee80211_sub_if_data *vlan; 677 u32 changed = BSS_CHANGED_BEACON_INT | 678 BSS_CHANGED_BEACON_ENABLED | 679 BSS_CHANGED_BEACON | 680 BSS_CHANGED_SSID | 681 BSS_CHANGED_P2P_PS | 682 BSS_CHANGED_TXPOWER; 683 int err; 684 685 old = sdata_dereference(sdata->u.ap.beacon, sdata); 686 if (old) 687 return -EALREADY; 688 689 switch (params->smps_mode) { 690 case NL80211_SMPS_OFF: 691 sdata->smps_mode = IEEE80211_SMPS_OFF; 692 break; 693 case NL80211_SMPS_STATIC: 694 sdata->smps_mode = IEEE80211_SMPS_STATIC; 695 break; 696 case NL80211_SMPS_DYNAMIC: 697 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 698 break; 699 default: 700 return -EINVAL; 701 } 702 sdata->needed_rx_chains = sdata->local->rx_chains; 703 704 mutex_lock(&local->mtx); 705 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 706 IEEE80211_CHANCTX_SHARED); 707 if (!err) 708 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 709 mutex_unlock(&local->mtx); 710 if (err) 711 return err; 712 713 /* 714 * Apply control port protocol, this allows us to 715 * not encrypt dynamic WEP control frames. 716 */ 717 sdata->control_port_protocol = params->crypto.control_port_ethertype; 718 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 719 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 720 ¶ms->crypto, 721 sdata->vif.type); 722 723 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 724 vlan->control_port_protocol = 725 params->crypto.control_port_ethertype; 726 vlan->control_port_no_encrypt = 727 params->crypto.control_port_no_encrypt; 728 vlan->encrypt_headroom = 729 ieee80211_cs_headroom(sdata->local, 730 ¶ms->crypto, 731 vlan->vif.type); 732 } 733 734 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 735 sdata->vif.bss_conf.dtim_period = params->dtim_period; 736 sdata->vif.bss_conf.enable_beacon = true; 737 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 738 739 sdata->vif.bss_conf.ssid_len = params->ssid_len; 740 if (params->ssid_len) 741 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 742 params->ssid_len); 743 sdata->vif.bss_conf.hidden_ssid = 744 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 745 746 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 747 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 749 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 750 if (params->p2p_opp_ps) 751 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 752 IEEE80211_P2P_OPPPS_ENABLE_BIT; 753 754 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 755 if (err < 0) { 756 ieee80211_vif_release_channel(sdata); 757 return err; 758 } 759 changed |= err; 760 761 err = drv_start_ap(sdata->local, sdata); 762 if (err) { 763 old = sdata_dereference(sdata->u.ap.beacon, sdata); 764 765 if (old) 766 kfree_rcu(old, rcu_head); 767 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 768 ieee80211_vif_release_channel(sdata); 769 return err; 770 } 771 772 ieee80211_recalc_dtim(local, sdata); 773 ieee80211_bss_info_change_notify(sdata, changed); 774 775 netif_carrier_on(dev); 776 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 777 netif_carrier_on(vlan->dev); 778 779 return 0; 780 } 781 782 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 783 struct cfg80211_beacon_data *params) 784 { 785 struct ieee80211_sub_if_data *sdata; 786 struct beacon_data *old; 787 int err; 788 789 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 790 sdata_assert_lock(sdata); 791 792 /* don't allow changing the beacon while CSA is in place - offset 793 * of channel switch counter may change 794 */ 795 if (sdata->vif.csa_active) 796 return -EBUSY; 797 798 old = sdata_dereference(sdata->u.ap.beacon, sdata); 799 if (!old) 800 return -ENOENT; 801 802 err = ieee80211_assign_beacon(sdata, params, NULL); 803 if (err < 0) 804 return err; 805 ieee80211_bss_info_change_notify(sdata, err); 806 return 0; 807 } 808 809 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 810 { 811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 812 struct ieee80211_sub_if_data *vlan; 813 struct ieee80211_local *local = sdata->local; 814 struct beacon_data *old_beacon; 815 struct probe_resp *old_probe_resp; 816 struct cfg80211_chan_def chandef; 817 818 sdata_assert_lock(sdata); 819 820 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 821 if (!old_beacon) 822 return -ENOENT; 823 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 824 825 /* abort any running channel switch */ 826 mutex_lock(&local->mtx); 827 sdata->vif.csa_active = false; 828 if (sdata->csa_block_tx) { 829 ieee80211_wake_vif_queues(local, sdata, 830 IEEE80211_QUEUE_STOP_REASON_CSA); 831 sdata->csa_block_tx = false; 832 } 833 834 mutex_unlock(&local->mtx); 835 836 kfree(sdata->u.ap.next_beacon); 837 sdata->u.ap.next_beacon = NULL; 838 839 /* turn off carrier for this interface and dependent VLANs */ 840 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 841 netif_carrier_off(vlan->dev); 842 netif_carrier_off(dev); 843 844 /* remove beacon and probe response */ 845 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 846 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 847 kfree_rcu(old_beacon, rcu_head); 848 if (old_probe_resp) 849 kfree_rcu(old_probe_resp, rcu_head); 850 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 851 852 __sta_info_flush(sdata, true); 853 ieee80211_free_keys(sdata, true); 854 855 sdata->vif.bss_conf.enable_beacon = false; 856 sdata->vif.bss_conf.ssid_len = 0; 857 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 858 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 859 860 if (sdata->wdev.cac_started) { 861 chandef = sdata->vif.bss_conf.chandef; 862 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 863 cfg80211_cac_event(sdata->dev, &chandef, 864 NL80211_RADAR_CAC_ABORTED, 865 GFP_KERNEL); 866 } 867 868 drv_stop_ap(sdata->local, sdata); 869 870 /* free all potentially still buffered bcast frames */ 871 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 872 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); 873 874 mutex_lock(&local->mtx); 875 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 876 ieee80211_vif_release_channel(sdata); 877 mutex_unlock(&local->mtx); 878 879 return 0; 880 } 881 882 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 883 struct iapp_layer2_update { 884 u8 da[ETH_ALEN]; /* broadcast */ 885 u8 sa[ETH_ALEN]; /* STA addr */ 886 __be16 len; /* 6 */ 887 u8 dsap; /* 0 */ 888 u8 ssap; /* 0 */ 889 u8 control; 890 u8 xid_info[3]; 891 } __packed; 892 893 static void ieee80211_send_layer2_update(struct sta_info *sta) 894 { 895 struct iapp_layer2_update *msg; 896 struct sk_buff *skb; 897 898 /* Send Level 2 Update Frame to update forwarding tables in layer 2 899 * bridge devices */ 900 901 skb = dev_alloc_skb(sizeof(*msg)); 902 if (!skb) 903 return; 904 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 905 906 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 907 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 908 909 eth_broadcast_addr(msg->da); 910 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 911 msg->len = htons(6); 912 msg->dsap = 0; 913 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 914 msg->control = 0xaf; /* XID response lsb.1111F101. 915 * F=0 (no poll command; unsolicited frame) */ 916 msg->xid_info[0] = 0x81; /* XID format identifier */ 917 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 918 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 919 920 skb->dev = sta->sdata->dev; 921 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 922 memset(skb->cb, 0, sizeof(skb->cb)); 923 netif_rx_ni(skb); 924 } 925 926 static int sta_apply_auth_flags(struct ieee80211_local *local, 927 struct sta_info *sta, 928 u32 mask, u32 set) 929 { 930 int ret; 931 932 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 933 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 934 !test_sta_flag(sta, WLAN_STA_AUTH)) { 935 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 936 if (ret) 937 return ret; 938 } 939 940 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 941 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 942 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 943 /* 944 * When peer becomes associated, init rate control as 945 * well. Some drivers require rate control initialized 946 * before drv_sta_state() is called. 947 */ 948 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 949 rate_control_rate_init(sta); 950 951 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 952 if (ret) 953 return ret; 954 } 955 956 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 957 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 958 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 959 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 960 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 961 else 962 ret = 0; 963 if (ret) 964 return ret; 965 } 966 967 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 968 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 969 test_sta_flag(sta, WLAN_STA_ASSOC)) { 970 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 971 if (ret) 972 return ret; 973 } 974 975 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 976 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 977 test_sta_flag(sta, WLAN_STA_AUTH)) { 978 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 979 if (ret) 980 return ret; 981 } 982 983 return 0; 984 } 985 986 static void sta_apply_mesh_params(struct ieee80211_local *local, 987 struct sta_info *sta, 988 struct station_parameters *params) 989 { 990 #ifdef CONFIG_MAC80211_MESH 991 struct ieee80211_sub_if_data *sdata = sta->sdata; 992 u32 changed = 0; 993 994 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 995 switch (params->plink_state) { 996 case NL80211_PLINK_ESTAB: 997 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 998 changed = mesh_plink_inc_estab_count(sdata); 999 sta->mesh->plink_state = params->plink_state; 1000 sta->mesh->aid = params->peer_aid; 1001 1002 ieee80211_mps_sta_status_update(sta); 1003 changed |= ieee80211_mps_set_sta_local_pm(sta, 1004 sdata->u.mesh.mshcfg.power_mode); 1005 break; 1006 case NL80211_PLINK_LISTEN: 1007 case NL80211_PLINK_BLOCKED: 1008 case NL80211_PLINK_OPN_SNT: 1009 case NL80211_PLINK_OPN_RCVD: 1010 case NL80211_PLINK_CNF_RCVD: 1011 case NL80211_PLINK_HOLDING: 1012 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1013 changed = mesh_plink_dec_estab_count(sdata); 1014 sta->mesh->plink_state = params->plink_state; 1015 1016 ieee80211_mps_sta_status_update(sta); 1017 changed |= ieee80211_mps_set_sta_local_pm(sta, 1018 NL80211_MESH_POWER_UNKNOWN); 1019 break; 1020 default: 1021 /* nothing */ 1022 break; 1023 } 1024 } 1025 1026 switch (params->plink_action) { 1027 case NL80211_PLINK_ACTION_NO_ACTION: 1028 /* nothing */ 1029 break; 1030 case NL80211_PLINK_ACTION_OPEN: 1031 changed |= mesh_plink_open(sta); 1032 break; 1033 case NL80211_PLINK_ACTION_BLOCK: 1034 changed |= mesh_plink_block(sta); 1035 break; 1036 } 1037 1038 if (params->local_pm) 1039 changed |= ieee80211_mps_set_sta_local_pm(sta, 1040 params->local_pm); 1041 1042 ieee80211_mbss_info_change_notify(sdata, changed); 1043 #endif 1044 } 1045 1046 static int sta_apply_parameters(struct ieee80211_local *local, 1047 struct sta_info *sta, 1048 struct station_parameters *params) 1049 { 1050 int ret = 0; 1051 struct ieee80211_supported_band *sband; 1052 struct ieee80211_sub_if_data *sdata = sta->sdata; 1053 enum nl80211_band band = ieee80211_get_sdata_band(sdata); 1054 u32 mask, set; 1055 1056 sband = local->hw.wiphy->bands[band]; 1057 1058 mask = params->sta_flags_mask; 1059 set = params->sta_flags_set; 1060 1061 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1062 /* 1063 * In mesh mode, ASSOCIATED isn't part of the nl80211 1064 * API but must follow AUTHENTICATED for driver state. 1065 */ 1066 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1067 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1068 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1069 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1070 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1071 /* 1072 * TDLS -- everything follows authorized, but 1073 * only becoming authorized is possible, not 1074 * going back 1075 */ 1076 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1077 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1078 BIT(NL80211_STA_FLAG_ASSOCIATED); 1079 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1080 BIT(NL80211_STA_FLAG_ASSOCIATED); 1081 } 1082 } 1083 1084 if (mask & BIT(NL80211_STA_FLAG_WME) && 1085 local->hw.queues >= IEEE80211_NUM_ACS) 1086 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1087 1088 /* auth flags will be set later for TDLS, 1089 * and for unassociated stations that move to assocaited */ 1090 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1091 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1092 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1093 ret = sta_apply_auth_flags(local, sta, mask, set); 1094 if (ret) 1095 return ret; 1096 } 1097 1098 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1099 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1100 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1101 else 1102 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1103 } 1104 1105 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1106 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1107 if (set & BIT(NL80211_STA_FLAG_MFP)) 1108 set_sta_flag(sta, WLAN_STA_MFP); 1109 else 1110 clear_sta_flag(sta, WLAN_STA_MFP); 1111 } 1112 1113 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1114 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1115 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1116 else 1117 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1118 } 1119 1120 /* mark TDLS channel switch support, if the AP allows it */ 1121 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1122 !sdata->u.mgd.tdls_chan_switch_prohibited && 1123 params->ext_capab_len >= 4 && 1124 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1125 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1126 1127 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1128 !sdata->u.mgd.tdls_wider_bw_prohibited && 1129 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1130 params->ext_capab_len >= 8 && 1131 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1132 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1133 1134 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1135 sta->sta.uapsd_queues = params->uapsd_queues; 1136 sta->sta.max_sp = params->max_sp; 1137 } 1138 1139 /* The sender might not have sent the last bit, consider it to be 0 */ 1140 if (params->ext_capab_len >= 8) { 1141 u8 val = (params->ext_capab[7] & 1142 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1143 1144 /* we did get all the bits, take the MSB as well */ 1145 if (params->ext_capab_len >= 9) { 1146 u8 val_msb = params->ext_capab[8] & 1147 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1148 val_msb <<= 1; 1149 val |= val_msb; 1150 } 1151 1152 switch (val) { 1153 case 1: 1154 sta->sta.max_amsdu_subframes = 32; 1155 break; 1156 case 2: 1157 sta->sta.max_amsdu_subframes = 16; 1158 break; 1159 case 3: 1160 sta->sta.max_amsdu_subframes = 8; 1161 break; 1162 default: 1163 sta->sta.max_amsdu_subframes = 0; 1164 } 1165 } 1166 1167 /* 1168 * cfg80211 validates this (1-2007) and allows setting the AID 1169 * only when creating a new station entry 1170 */ 1171 if (params->aid) 1172 sta->sta.aid = params->aid; 1173 1174 /* 1175 * Some of the following updates would be racy if called on an 1176 * existing station, via ieee80211_change_station(). However, 1177 * all such changes are rejected by cfg80211 except for updates 1178 * changing the supported rates on an existing but not yet used 1179 * TDLS peer. 1180 */ 1181 1182 if (params->listen_interval >= 0) 1183 sta->listen_interval = params->listen_interval; 1184 1185 if (params->supported_rates) { 1186 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1187 sband, params->supported_rates, 1188 params->supported_rates_len, 1189 &sta->sta.supp_rates[band]); 1190 } 1191 1192 if (params->ht_capa) 1193 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1194 params->ht_capa, sta); 1195 1196 /* VHT can override some HT caps such as the A-MSDU max length */ 1197 if (params->vht_capa) 1198 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1199 params->vht_capa, sta); 1200 1201 if (params->opmode_notif_used) { 1202 /* returned value is only needed for rc update, but the 1203 * rc isn't initialized here yet, so ignore it 1204 */ 1205 __ieee80211_vht_handle_opmode(sdata, sta, 1206 params->opmode_notif, band); 1207 } 1208 1209 if (params->support_p2p_ps >= 0) 1210 sta->sta.support_p2p_ps = params->support_p2p_ps; 1211 1212 if (ieee80211_vif_is_mesh(&sdata->vif)) 1213 sta_apply_mesh_params(local, sta, params); 1214 1215 /* set the STA state after all sta info from usermode has been set */ 1216 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1217 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1218 ret = sta_apply_auth_flags(local, sta, mask, set); 1219 if (ret) 1220 return ret; 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1227 const u8 *mac, 1228 struct station_parameters *params) 1229 { 1230 struct ieee80211_local *local = wiphy_priv(wiphy); 1231 struct sta_info *sta; 1232 struct ieee80211_sub_if_data *sdata; 1233 int err; 1234 int layer2_update; 1235 1236 if (params->vlan) { 1237 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1238 1239 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1240 sdata->vif.type != NL80211_IFTYPE_AP) 1241 return -EINVAL; 1242 } else 1243 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1244 1245 if (ether_addr_equal(mac, sdata->vif.addr)) 1246 return -EINVAL; 1247 1248 if (is_multicast_ether_addr(mac)) 1249 return -EINVAL; 1250 1251 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1252 if (!sta) 1253 return -ENOMEM; 1254 1255 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1256 sta->sta.tdls = true; 1257 1258 err = sta_apply_parameters(local, sta, params); 1259 if (err) { 1260 sta_info_free(local, sta); 1261 return err; 1262 } 1263 1264 /* 1265 * for TDLS and for unassociated station, rate control should be 1266 * initialized only when rates are known and station is marked 1267 * authorized/associated 1268 */ 1269 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1270 test_sta_flag(sta, WLAN_STA_ASSOC)) 1271 rate_control_rate_init(sta); 1272 1273 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1274 sdata->vif.type == NL80211_IFTYPE_AP; 1275 1276 err = sta_info_insert_rcu(sta); 1277 if (err) { 1278 rcu_read_unlock(); 1279 return err; 1280 } 1281 1282 if (layer2_update) 1283 ieee80211_send_layer2_update(sta); 1284 1285 rcu_read_unlock(); 1286 1287 return 0; 1288 } 1289 1290 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1291 struct station_del_parameters *params) 1292 { 1293 struct ieee80211_sub_if_data *sdata; 1294 1295 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1296 1297 if (params->mac) 1298 return sta_info_destroy_addr_bss(sdata, params->mac); 1299 1300 sta_info_flush(sdata); 1301 return 0; 1302 } 1303 1304 static int ieee80211_change_station(struct wiphy *wiphy, 1305 struct net_device *dev, const u8 *mac, 1306 struct station_parameters *params) 1307 { 1308 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1309 struct ieee80211_local *local = wiphy_priv(wiphy); 1310 struct sta_info *sta; 1311 struct ieee80211_sub_if_data *vlansdata; 1312 enum cfg80211_station_type statype; 1313 int err; 1314 1315 mutex_lock(&local->sta_mtx); 1316 1317 sta = sta_info_get_bss(sdata, mac); 1318 if (!sta) { 1319 err = -ENOENT; 1320 goto out_err; 1321 } 1322 1323 switch (sdata->vif.type) { 1324 case NL80211_IFTYPE_MESH_POINT: 1325 if (sdata->u.mesh.user_mpm) 1326 statype = CFG80211_STA_MESH_PEER_USER; 1327 else 1328 statype = CFG80211_STA_MESH_PEER_KERNEL; 1329 break; 1330 case NL80211_IFTYPE_ADHOC: 1331 statype = CFG80211_STA_IBSS; 1332 break; 1333 case NL80211_IFTYPE_STATION: 1334 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1335 statype = CFG80211_STA_AP_STA; 1336 break; 1337 } 1338 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1339 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1340 else 1341 statype = CFG80211_STA_TDLS_PEER_SETUP; 1342 break; 1343 case NL80211_IFTYPE_AP: 1344 case NL80211_IFTYPE_AP_VLAN: 1345 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1346 statype = CFG80211_STA_AP_CLIENT; 1347 else 1348 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1349 break; 1350 default: 1351 err = -EOPNOTSUPP; 1352 goto out_err; 1353 } 1354 1355 err = cfg80211_check_station_change(wiphy, params, statype); 1356 if (err) 1357 goto out_err; 1358 1359 if (params->vlan && params->vlan != sta->sdata->dev) { 1360 bool prev_4addr = false; 1361 bool new_4addr = false; 1362 1363 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1364 1365 if (params->vlan->ieee80211_ptr->use_4addr) { 1366 if (vlansdata->u.vlan.sta) { 1367 err = -EBUSY; 1368 goto out_err; 1369 } 1370 1371 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1372 new_4addr = true; 1373 __ieee80211_check_fast_rx_iface(vlansdata); 1374 } 1375 1376 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1377 sta->sdata->u.vlan.sta) { 1378 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1379 prev_4addr = true; 1380 } 1381 1382 sta->sdata = vlansdata; 1383 ieee80211_check_fast_xmit(sta); 1384 1385 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1386 prev_4addr != new_4addr) { 1387 if (new_4addr) 1388 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1389 else 1390 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1391 } 1392 1393 ieee80211_send_layer2_update(sta); 1394 } 1395 1396 err = sta_apply_parameters(local, sta, params); 1397 if (err) 1398 goto out_err; 1399 1400 mutex_unlock(&local->sta_mtx); 1401 1402 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1403 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1404 sta->known_smps_mode != sta->sdata->bss->req_smps && 1405 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1406 sta_info_tx_streams(sta) != 1) { 1407 ht_dbg(sta->sdata, 1408 "%pM just authorized and MIMO capable - update SMPS\n", 1409 sta->sta.addr); 1410 ieee80211_send_smps_action(sta->sdata, 1411 sta->sdata->bss->req_smps, 1412 sta->sta.addr, 1413 sta->sdata->vif.bss_conf.bssid); 1414 } 1415 1416 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1417 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1418 ieee80211_recalc_ps(local); 1419 ieee80211_recalc_ps_vif(sdata); 1420 } 1421 1422 return 0; 1423 out_err: 1424 mutex_unlock(&local->sta_mtx); 1425 return err; 1426 } 1427 1428 #ifdef CONFIG_MAC80211_MESH 1429 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1430 const u8 *dst, const u8 *next_hop) 1431 { 1432 struct ieee80211_sub_if_data *sdata; 1433 struct mesh_path *mpath; 1434 struct sta_info *sta; 1435 1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1437 1438 rcu_read_lock(); 1439 sta = sta_info_get(sdata, next_hop); 1440 if (!sta) { 1441 rcu_read_unlock(); 1442 return -ENOENT; 1443 } 1444 1445 mpath = mesh_path_add(sdata, dst); 1446 if (IS_ERR(mpath)) { 1447 rcu_read_unlock(); 1448 return PTR_ERR(mpath); 1449 } 1450 1451 mesh_path_fix_nexthop(mpath, sta); 1452 1453 rcu_read_unlock(); 1454 return 0; 1455 } 1456 1457 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1458 const u8 *dst) 1459 { 1460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1461 1462 if (dst) 1463 return mesh_path_del(sdata, dst); 1464 1465 mesh_path_flush_by_iface(sdata); 1466 return 0; 1467 } 1468 1469 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1470 const u8 *dst, const u8 *next_hop) 1471 { 1472 struct ieee80211_sub_if_data *sdata; 1473 struct mesh_path *mpath; 1474 struct sta_info *sta; 1475 1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1477 1478 rcu_read_lock(); 1479 1480 sta = sta_info_get(sdata, next_hop); 1481 if (!sta) { 1482 rcu_read_unlock(); 1483 return -ENOENT; 1484 } 1485 1486 mpath = mesh_path_lookup(sdata, dst); 1487 if (!mpath) { 1488 rcu_read_unlock(); 1489 return -ENOENT; 1490 } 1491 1492 mesh_path_fix_nexthop(mpath, sta); 1493 1494 rcu_read_unlock(); 1495 return 0; 1496 } 1497 1498 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1499 struct mpath_info *pinfo) 1500 { 1501 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1502 1503 if (next_hop_sta) 1504 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1505 else 1506 eth_zero_addr(next_hop); 1507 1508 memset(pinfo, 0, sizeof(*pinfo)); 1509 1510 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 1511 1512 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1513 MPATH_INFO_SN | 1514 MPATH_INFO_METRIC | 1515 MPATH_INFO_EXPTIME | 1516 MPATH_INFO_DISCOVERY_TIMEOUT | 1517 MPATH_INFO_DISCOVERY_RETRIES | 1518 MPATH_INFO_FLAGS; 1519 1520 pinfo->frame_qlen = mpath->frame_queue.qlen; 1521 pinfo->sn = mpath->sn; 1522 pinfo->metric = mpath->metric; 1523 if (time_before(jiffies, mpath->exp_time)) 1524 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1525 pinfo->discovery_timeout = 1526 jiffies_to_msecs(mpath->discovery_timeout); 1527 pinfo->discovery_retries = mpath->discovery_retries; 1528 if (mpath->flags & MESH_PATH_ACTIVE) 1529 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1530 if (mpath->flags & MESH_PATH_RESOLVING) 1531 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1532 if (mpath->flags & MESH_PATH_SN_VALID) 1533 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1534 if (mpath->flags & MESH_PATH_FIXED) 1535 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1536 if (mpath->flags & MESH_PATH_RESOLVED) 1537 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1538 } 1539 1540 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1541 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1542 1543 { 1544 struct ieee80211_sub_if_data *sdata; 1545 struct mesh_path *mpath; 1546 1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1548 1549 rcu_read_lock(); 1550 mpath = mesh_path_lookup(sdata, dst); 1551 if (!mpath) { 1552 rcu_read_unlock(); 1553 return -ENOENT; 1554 } 1555 memcpy(dst, mpath->dst, ETH_ALEN); 1556 mpath_set_pinfo(mpath, next_hop, pinfo); 1557 rcu_read_unlock(); 1558 return 0; 1559 } 1560 1561 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1562 int idx, u8 *dst, u8 *next_hop, 1563 struct mpath_info *pinfo) 1564 { 1565 struct ieee80211_sub_if_data *sdata; 1566 struct mesh_path *mpath; 1567 1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1569 1570 rcu_read_lock(); 1571 mpath = mesh_path_lookup_by_idx(sdata, idx); 1572 if (!mpath) { 1573 rcu_read_unlock(); 1574 return -ENOENT; 1575 } 1576 memcpy(dst, mpath->dst, ETH_ALEN); 1577 mpath_set_pinfo(mpath, next_hop, pinfo); 1578 rcu_read_unlock(); 1579 return 0; 1580 } 1581 1582 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1583 struct mpath_info *pinfo) 1584 { 1585 memset(pinfo, 0, sizeof(*pinfo)); 1586 memcpy(mpp, mpath->mpp, ETH_ALEN); 1587 1588 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 1589 } 1590 1591 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1592 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1593 1594 { 1595 struct ieee80211_sub_if_data *sdata; 1596 struct mesh_path *mpath; 1597 1598 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1599 1600 rcu_read_lock(); 1601 mpath = mpp_path_lookup(sdata, dst); 1602 if (!mpath) { 1603 rcu_read_unlock(); 1604 return -ENOENT; 1605 } 1606 memcpy(dst, mpath->dst, ETH_ALEN); 1607 mpp_set_pinfo(mpath, mpp, pinfo); 1608 rcu_read_unlock(); 1609 return 0; 1610 } 1611 1612 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1613 int idx, u8 *dst, u8 *mpp, 1614 struct mpath_info *pinfo) 1615 { 1616 struct ieee80211_sub_if_data *sdata; 1617 struct mesh_path *mpath; 1618 1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1620 1621 rcu_read_lock(); 1622 mpath = mpp_path_lookup_by_idx(sdata, idx); 1623 if (!mpath) { 1624 rcu_read_unlock(); 1625 return -ENOENT; 1626 } 1627 memcpy(dst, mpath->dst, ETH_ALEN); 1628 mpp_set_pinfo(mpath, mpp, pinfo); 1629 rcu_read_unlock(); 1630 return 0; 1631 } 1632 1633 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1634 struct net_device *dev, 1635 struct mesh_config *conf) 1636 { 1637 struct ieee80211_sub_if_data *sdata; 1638 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1639 1640 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1641 return 0; 1642 } 1643 1644 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1645 { 1646 return (mask >> (parm-1)) & 0x1; 1647 } 1648 1649 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1650 const struct mesh_setup *setup) 1651 { 1652 u8 *new_ie; 1653 const u8 *old_ie; 1654 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1655 struct ieee80211_sub_if_data, u.mesh); 1656 1657 /* allocate information elements */ 1658 new_ie = NULL; 1659 old_ie = ifmsh->ie; 1660 1661 if (setup->ie_len) { 1662 new_ie = kmemdup(setup->ie, setup->ie_len, 1663 GFP_KERNEL); 1664 if (!new_ie) 1665 return -ENOMEM; 1666 } 1667 ifmsh->ie_len = setup->ie_len; 1668 ifmsh->ie = new_ie; 1669 kfree(old_ie); 1670 1671 /* now copy the rest of the setup parameters */ 1672 ifmsh->mesh_id_len = setup->mesh_id_len; 1673 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1674 ifmsh->mesh_sp_id = setup->sync_method; 1675 ifmsh->mesh_pp_id = setup->path_sel_proto; 1676 ifmsh->mesh_pm_id = setup->path_metric; 1677 ifmsh->user_mpm = setup->user_mpm; 1678 ifmsh->mesh_auth_id = setup->auth_id; 1679 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1680 if (setup->is_authenticated) 1681 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1682 if (setup->is_secure) 1683 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1684 1685 /* mcast rate setting in Mesh Node */ 1686 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1687 sizeof(setup->mcast_rate)); 1688 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1689 1690 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1691 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1692 1693 return 0; 1694 } 1695 1696 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1697 struct net_device *dev, u32 mask, 1698 const struct mesh_config *nconf) 1699 { 1700 struct mesh_config *conf; 1701 struct ieee80211_sub_if_data *sdata; 1702 struct ieee80211_if_mesh *ifmsh; 1703 1704 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1705 ifmsh = &sdata->u.mesh; 1706 1707 /* Set the config options which we are interested in setting */ 1708 conf = &(sdata->u.mesh.mshcfg); 1709 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1710 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1711 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1712 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1714 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1715 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1716 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1717 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1718 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1719 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1720 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1721 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1722 conf->element_ttl = nconf->element_ttl; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1724 if (ifmsh->user_mpm) 1725 return -EBUSY; 1726 conf->auto_open_plinks = nconf->auto_open_plinks; 1727 } 1728 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1729 conf->dot11MeshNbrOffsetMaxNeighbor = 1730 nconf->dot11MeshNbrOffsetMaxNeighbor; 1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1732 conf->dot11MeshHWMPmaxPREQretries = 1733 nconf->dot11MeshHWMPmaxPREQretries; 1734 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1735 conf->path_refresh_time = nconf->path_refresh_time; 1736 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1737 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1739 conf->dot11MeshHWMPactivePathTimeout = 1740 nconf->dot11MeshHWMPactivePathTimeout; 1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1742 conf->dot11MeshHWMPpreqMinInterval = 1743 nconf->dot11MeshHWMPpreqMinInterval; 1744 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1745 conf->dot11MeshHWMPperrMinInterval = 1746 nconf->dot11MeshHWMPperrMinInterval; 1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1748 mask)) 1749 conf->dot11MeshHWMPnetDiameterTraversalTime = 1750 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1752 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1753 ieee80211_mesh_root_setup(ifmsh); 1754 } 1755 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1756 /* our current gate announcement implementation rides on root 1757 * announcements, so require this ifmsh to also be a root node 1758 * */ 1759 if (nconf->dot11MeshGateAnnouncementProtocol && 1760 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1761 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1762 ieee80211_mesh_root_setup(ifmsh); 1763 } 1764 conf->dot11MeshGateAnnouncementProtocol = 1765 nconf->dot11MeshGateAnnouncementProtocol; 1766 } 1767 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1768 conf->dot11MeshHWMPRannInterval = 1769 nconf->dot11MeshHWMPRannInterval; 1770 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1771 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1772 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1773 /* our RSSI threshold implementation is supported only for 1774 * devices that report signal in dBm. 1775 */ 1776 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1777 return -ENOTSUPP; 1778 conf->rssi_threshold = nconf->rssi_threshold; 1779 } 1780 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1781 conf->ht_opmode = nconf->ht_opmode; 1782 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1783 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1784 } 1785 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1786 conf->dot11MeshHWMPactivePathToRootTimeout = 1787 nconf->dot11MeshHWMPactivePathToRootTimeout; 1788 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1789 conf->dot11MeshHWMProotInterval = 1790 nconf->dot11MeshHWMProotInterval; 1791 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1792 conf->dot11MeshHWMPconfirmationInterval = 1793 nconf->dot11MeshHWMPconfirmationInterval; 1794 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1795 conf->power_mode = nconf->power_mode; 1796 ieee80211_mps_local_status_update(sdata); 1797 } 1798 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1799 conf->dot11MeshAwakeWindowDuration = 1800 nconf->dot11MeshAwakeWindowDuration; 1801 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1802 conf->plink_timeout = nconf->plink_timeout; 1803 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1804 return 0; 1805 } 1806 1807 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1808 const struct mesh_config *conf, 1809 const struct mesh_setup *setup) 1810 { 1811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1812 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1813 int err; 1814 1815 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1816 err = copy_mesh_setup(ifmsh, setup); 1817 if (err) 1818 return err; 1819 1820 /* can mesh use other SMPS modes? */ 1821 sdata->smps_mode = IEEE80211_SMPS_OFF; 1822 sdata->needed_rx_chains = sdata->local->rx_chains; 1823 1824 mutex_lock(&sdata->local->mtx); 1825 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1826 IEEE80211_CHANCTX_SHARED); 1827 mutex_unlock(&sdata->local->mtx); 1828 if (err) 1829 return err; 1830 1831 return ieee80211_start_mesh(sdata); 1832 } 1833 1834 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1835 { 1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1837 1838 ieee80211_stop_mesh(sdata); 1839 mutex_lock(&sdata->local->mtx); 1840 ieee80211_vif_release_channel(sdata); 1841 mutex_unlock(&sdata->local->mtx); 1842 1843 return 0; 1844 } 1845 #endif 1846 1847 static int ieee80211_change_bss(struct wiphy *wiphy, 1848 struct net_device *dev, 1849 struct bss_parameters *params) 1850 { 1851 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1852 enum nl80211_band band; 1853 u32 changed = 0; 1854 1855 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1856 return -ENOENT; 1857 1858 band = ieee80211_get_sdata_band(sdata); 1859 1860 if (params->use_cts_prot >= 0) { 1861 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1862 changed |= BSS_CHANGED_ERP_CTS_PROT; 1863 } 1864 if (params->use_short_preamble >= 0) { 1865 sdata->vif.bss_conf.use_short_preamble = 1866 params->use_short_preamble; 1867 changed |= BSS_CHANGED_ERP_PREAMBLE; 1868 } 1869 1870 if (!sdata->vif.bss_conf.use_short_slot && 1871 band == NL80211_BAND_5GHZ) { 1872 sdata->vif.bss_conf.use_short_slot = true; 1873 changed |= BSS_CHANGED_ERP_SLOT; 1874 } 1875 1876 if (params->use_short_slot_time >= 0) { 1877 sdata->vif.bss_conf.use_short_slot = 1878 params->use_short_slot_time; 1879 changed |= BSS_CHANGED_ERP_SLOT; 1880 } 1881 1882 if (params->basic_rates) { 1883 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1884 wiphy->bands[band], 1885 params->basic_rates, 1886 params->basic_rates_len, 1887 &sdata->vif.bss_conf.basic_rates); 1888 changed |= BSS_CHANGED_BASIC_RATES; 1889 } 1890 1891 if (params->ap_isolate >= 0) { 1892 if (params->ap_isolate) 1893 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1894 else 1895 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1896 ieee80211_check_fast_rx_iface(sdata); 1897 } 1898 1899 if (params->ht_opmode >= 0) { 1900 sdata->vif.bss_conf.ht_operation_mode = 1901 (u16) params->ht_opmode; 1902 changed |= BSS_CHANGED_HT; 1903 } 1904 1905 if (params->p2p_ctwindow >= 0) { 1906 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1907 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1908 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1909 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1910 changed |= BSS_CHANGED_P2P_PS; 1911 } 1912 1913 if (params->p2p_opp_ps > 0) { 1914 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1915 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1916 changed |= BSS_CHANGED_P2P_PS; 1917 } else if (params->p2p_opp_ps == 0) { 1918 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1919 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1920 changed |= BSS_CHANGED_P2P_PS; 1921 } 1922 1923 ieee80211_bss_info_change_notify(sdata, changed); 1924 1925 return 0; 1926 } 1927 1928 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1929 struct net_device *dev, 1930 struct ieee80211_txq_params *params) 1931 { 1932 struct ieee80211_local *local = wiphy_priv(wiphy); 1933 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1934 struct ieee80211_tx_queue_params p; 1935 1936 if (!local->ops->conf_tx) 1937 return -EOPNOTSUPP; 1938 1939 if (local->hw.queues < IEEE80211_NUM_ACS) 1940 return -EOPNOTSUPP; 1941 1942 memset(&p, 0, sizeof(p)); 1943 p.aifs = params->aifs; 1944 p.cw_max = params->cwmax; 1945 p.cw_min = params->cwmin; 1946 p.txop = params->txop; 1947 1948 /* 1949 * Setting tx queue params disables u-apsd because it's only 1950 * called in master mode. 1951 */ 1952 p.uapsd = false; 1953 1954 sdata->tx_conf[params->ac] = p; 1955 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1956 wiphy_debug(local->hw.wiphy, 1957 "failed to set TX queue parameters for AC %d\n", 1958 params->ac); 1959 return -EINVAL; 1960 } 1961 1962 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1963 1964 return 0; 1965 } 1966 1967 #ifdef CONFIG_PM 1968 static int ieee80211_suspend(struct wiphy *wiphy, 1969 struct cfg80211_wowlan *wowlan) 1970 { 1971 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1972 } 1973 1974 static int ieee80211_resume(struct wiphy *wiphy) 1975 { 1976 return __ieee80211_resume(wiphy_priv(wiphy)); 1977 } 1978 #else 1979 #define ieee80211_suspend NULL 1980 #define ieee80211_resume NULL 1981 #endif 1982 1983 static int ieee80211_scan(struct wiphy *wiphy, 1984 struct cfg80211_scan_request *req) 1985 { 1986 struct ieee80211_sub_if_data *sdata; 1987 1988 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1989 1990 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1991 case NL80211_IFTYPE_STATION: 1992 case NL80211_IFTYPE_ADHOC: 1993 case NL80211_IFTYPE_MESH_POINT: 1994 case NL80211_IFTYPE_P2P_CLIENT: 1995 case NL80211_IFTYPE_P2P_DEVICE: 1996 break; 1997 case NL80211_IFTYPE_P2P_GO: 1998 if (sdata->local->ops->hw_scan) 1999 break; 2000 /* 2001 * FIXME: implement NoA while scanning in software, 2002 * for now fall through to allow scanning only when 2003 * beaconing hasn't been configured yet 2004 */ 2005 case NL80211_IFTYPE_AP: 2006 /* 2007 * If the scan has been forced (and the driver supports 2008 * forcing), don't care about being beaconing already. 2009 * This will create problems to the attached stations (e.g. all 2010 * the frames sent while scanning on other channel will be 2011 * lost) 2012 */ 2013 if (sdata->u.ap.beacon && 2014 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2015 !(req->flags & NL80211_SCAN_FLAG_AP))) 2016 return -EOPNOTSUPP; 2017 break; 2018 default: 2019 return -EOPNOTSUPP; 2020 } 2021 2022 return ieee80211_request_scan(sdata, req); 2023 } 2024 2025 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2026 { 2027 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2028 } 2029 2030 static int 2031 ieee80211_sched_scan_start(struct wiphy *wiphy, 2032 struct net_device *dev, 2033 struct cfg80211_sched_scan_request *req) 2034 { 2035 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2036 2037 if (!sdata->local->ops->sched_scan_start) 2038 return -EOPNOTSUPP; 2039 2040 return ieee80211_request_sched_scan_start(sdata, req); 2041 } 2042 2043 static int 2044 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2045 { 2046 struct ieee80211_local *local = wiphy_priv(wiphy); 2047 2048 if (!local->ops->sched_scan_stop) 2049 return -EOPNOTSUPP; 2050 2051 return ieee80211_request_sched_scan_stop(local); 2052 } 2053 2054 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2055 struct cfg80211_auth_request *req) 2056 { 2057 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2058 } 2059 2060 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2061 struct cfg80211_assoc_request *req) 2062 { 2063 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2064 } 2065 2066 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2067 struct cfg80211_deauth_request *req) 2068 { 2069 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2070 } 2071 2072 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2073 struct cfg80211_disassoc_request *req) 2074 { 2075 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2076 } 2077 2078 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2079 struct cfg80211_ibss_params *params) 2080 { 2081 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2082 } 2083 2084 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2085 { 2086 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2087 } 2088 2089 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2090 struct ocb_setup *setup) 2091 { 2092 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2093 } 2094 2095 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2096 { 2097 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2098 } 2099 2100 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2101 int rate[NUM_NL80211_BANDS]) 2102 { 2103 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2104 2105 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2106 sizeof(int) * NUM_NL80211_BANDS); 2107 2108 return 0; 2109 } 2110 2111 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2112 { 2113 struct ieee80211_local *local = wiphy_priv(wiphy); 2114 int err; 2115 2116 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2117 ieee80211_check_fast_xmit_all(local); 2118 2119 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2120 2121 if (err) { 2122 ieee80211_check_fast_xmit_all(local); 2123 return err; 2124 } 2125 } 2126 2127 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2128 (changed & WIPHY_PARAM_DYN_ACK)) { 2129 s16 coverage_class; 2130 2131 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2132 wiphy->coverage_class : -1; 2133 err = drv_set_coverage_class(local, coverage_class); 2134 2135 if (err) 2136 return err; 2137 } 2138 2139 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2140 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2141 2142 if (err) 2143 return err; 2144 } 2145 2146 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2147 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2148 return -EINVAL; 2149 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2150 } 2151 if (changed & WIPHY_PARAM_RETRY_LONG) { 2152 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2153 return -EINVAL; 2154 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2155 } 2156 if (changed & 2157 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2158 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2159 2160 return 0; 2161 } 2162 2163 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2164 struct wireless_dev *wdev, 2165 enum nl80211_tx_power_setting type, int mbm) 2166 { 2167 struct ieee80211_local *local = wiphy_priv(wiphy); 2168 struct ieee80211_sub_if_data *sdata; 2169 enum nl80211_tx_power_setting txp_type = type; 2170 bool update_txp_type = false; 2171 2172 if (wdev) { 2173 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2174 2175 switch (type) { 2176 case NL80211_TX_POWER_AUTOMATIC: 2177 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2178 txp_type = NL80211_TX_POWER_LIMITED; 2179 break; 2180 case NL80211_TX_POWER_LIMITED: 2181 case NL80211_TX_POWER_FIXED: 2182 if (mbm < 0 || (mbm % 100)) 2183 return -EOPNOTSUPP; 2184 sdata->user_power_level = MBM_TO_DBM(mbm); 2185 break; 2186 } 2187 2188 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2189 update_txp_type = true; 2190 sdata->vif.bss_conf.txpower_type = txp_type; 2191 } 2192 2193 ieee80211_recalc_txpower(sdata, update_txp_type); 2194 2195 return 0; 2196 } 2197 2198 switch (type) { 2199 case NL80211_TX_POWER_AUTOMATIC: 2200 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2201 txp_type = NL80211_TX_POWER_LIMITED; 2202 break; 2203 case NL80211_TX_POWER_LIMITED: 2204 case NL80211_TX_POWER_FIXED: 2205 if (mbm < 0 || (mbm % 100)) 2206 return -EOPNOTSUPP; 2207 local->user_power_level = MBM_TO_DBM(mbm); 2208 break; 2209 } 2210 2211 mutex_lock(&local->iflist_mtx); 2212 list_for_each_entry(sdata, &local->interfaces, list) { 2213 sdata->user_power_level = local->user_power_level; 2214 if (txp_type != sdata->vif.bss_conf.txpower_type) 2215 update_txp_type = true; 2216 sdata->vif.bss_conf.txpower_type = txp_type; 2217 } 2218 list_for_each_entry(sdata, &local->interfaces, list) 2219 ieee80211_recalc_txpower(sdata, update_txp_type); 2220 mutex_unlock(&local->iflist_mtx); 2221 2222 return 0; 2223 } 2224 2225 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2226 struct wireless_dev *wdev, 2227 int *dbm) 2228 { 2229 struct ieee80211_local *local = wiphy_priv(wiphy); 2230 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2231 2232 if (local->ops->get_txpower) 2233 return drv_get_txpower(local, sdata, dbm); 2234 2235 if (!local->use_chanctx) 2236 *dbm = local->hw.conf.power_level; 2237 else 2238 *dbm = sdata->vif.bss_conf.txpower; 2239 2240 return 0; 2241 } 2242 2243 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2244 const u8 *addr) 2245 { 2246 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2247 2248 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2249 2250 return 0; 2251 } 2252 2253 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2254 { 2255 struct ieee80211_local *local = wiphy_priv(wiphy); 2256 2257 drv_rfkill_poll(local); 2258 } 2259 2260 #ifdef CONFIG_NL80211_TESTMODE 2261 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2262 struct wireless_dev *wdev, 2263 void *data, int len) 2264 { 2265 struct ieee80211_local *local = wiphy_priv(wiphy); 2266 struct ieee80211_vif *vif = NULL; 2267 2268 if (!local->ops->testmode_cmd) 2269 return -EOPNOTSUPP; 2270 2271 if (wdev) { 2272 struct ieee80211_sub_if_data *sdata; 2273 2274 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2275 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2276 vif = &sdata->vif; 2277 } 2278 2279 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2280 } 2281 2282 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2283 struct sk_buff *skb, 2284 struct netlink_callback *cb, 2285 void *data, int len) 2286 { 2287 struct ieee80211_local *local = wiphy_priv(wiphy); 2288 2289 if (!local->ops->testmode_dump) 2290 return -EOPNOTSUPP; 2291 2292 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2293 } 2294 #endif 2295 2296 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2297 enum ieee80211_smps_mode smps_mode) 2298 { 2299 struct sta_info *sta; 2300 enum ieee80211_smps_mode old_req; 2301 2302 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2303 return -EINVAL; 2304 2305 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2306 return 0; 2307 2308 old_req = sdata->u.ap.req_smps; 2309 sdata->u.ap.req_smps = smps_mode; 2310 2311 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2312 if (old_req == smps_mode || 2313 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2314 return 0; 2315 2316 /* If no associated stations, there's no need to do anything */ 2317 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2318 sdata->smps_mode = smps_mode; 2319 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2320 return 0; 2321 } 2322 2323 ht_dbg(sdata, 2324 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2325 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2326 2327 mutex_lock(&sdata->local->sta_mtx); 2328 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2329 /* 2330 * Only stations associated to our AP and 2331 * associated VLANs 2332 */ 2333 if (sta->sdata->bss != &sdata->u.ap) 2334 continue; 2335 2336 /* This station doesn't support MIMO - skip it */ 2337 if (sta_info_tx_streams(sta) == 1) 2338 continue; 2339 2340 /* 2341 * Don't wake up a STA just to send the action frame 2342 * unless we are getting more restrictive. 2343 */ 2344 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2345 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2346 smps_mode)) { 2347 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2348 sta->sta.addr); 2349 continue; 2350 } 2351 2352 /* 2353 * If the STA is not authorized, wait until it gets 2354 * authorized and the action frame will be sent then. 2355 */ 2356 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2357 continue; 2358 2359 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2360 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2361 sdata->vif.bss_conf.bssid); 2362 } 2363 mutex_unlock(&sdata->local->sta_mtx); 2364 2365 sdata->smps_mode = smps_mode; 2366 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2367 2368 return 0; 2369 } 2370 2371 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2372 enum ieee80211_smps_mode smps_mode) 2373 { 2374 const u8 *ap; 2375 enum ieee80211_smps_mode old_req; 2376 int err; 2377 struct sta_info *sta; 2378 bool tdls_peer_found = false; 2379 2380 lockdep_assert_held(&sdata->wdev.mtx); 2381 2382 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2383 return -EINVAL; 2384 2385 old_req = sdata->u.mgd.req_smps; 2386 sdata->u.mgd.req_smps = smps_mode; 2387 2388 if (old_req == smps_mode && 2389 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2390 return 0; 2391 2392 /* 2393 * If not associated, or current association is not an HT 2394 * association, there's no need to do anything, just store 2395 * the new value until we associate. 2396 */ 2397 if (!sdata->u.mgd.associated || 2398 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2399 return 0; 2400 2401 ap = sdata->u.mgd.associated->bssid; 2402 2403 rcu_read_lock(); 2404 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2405 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2406 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2407 continue; 2408 2409 tdls_peer_found = true; 2410 break; 2411 } 2412 rcu_read_unlock(); 2413 2414 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2415 if (tdls_peer_found || !sdata->u.mgd.powersave) 2416 smps_mode = IEEE80211_SMPS_OFF; 2417 else 2418 smps_mode = IEEE80211_SMPS_DYNAMIC; 2419 } 2420 2421 /* send SM PS frame to AP */ 2422 err = ieee80211_send_smps_action(sdata, smps_mode, 2423 ap, ap); 2424 if (err) 2425 sdata->u.mgd.req_smps = old_req; 2426 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2427 ieee80211_teardown_tdls_peers(sdata); 2428 2429 return err; 2430 } 2431 2432 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2433 bool enabled, int timeout) 2434 { 2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2436 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2437 2438 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2439 return -EOPNOTSUPP; 2440 2441 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2442 return -EOPNOTSUPP; 2443 2444 if (enabled == sdata->u.mgd.powersave && 2445 timeout == local->dynamic_ps_forced_timeout) 2446 return 0; 2447 2448 sdata->u.mgd.powersave = enabled; 2449 local->dynamic_ps_forced_timeout = timeout; 2450 2451 /* no change, but if automatic follow powersave */ 2452 sdata_lock(sdata); 2453 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2454 sdata_unlock(sdata); 2455 2456 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2457 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2458 2459 ieee80211_recalc_ps(local); 2460 ieee80211_recalc_ps_vif(sdata); 2461 2462 return 0; 2463 } 2464 2465 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2466 struct net_device *dev, 2467 s32 rssi_thold, u32 rssi_hyst) 2468 { 2469 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2470 struct ieee80211_vif *vif = &sdata->vif; 2471 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2472 2473 if (rssi_thold == bss_conf->cqm_rssi_thold && 2474 rssi_hyst == bss_conf->cqm_rssi_hyst) 2475 return 0; 2476 2477 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2478 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2479 return -EOPNOTSUPP; 2480 2481 bss_conf->cqm_rssi_thold = rssi_thold; 2482 bss_conf->cqm_rssi_hyst = rssi_hyst; 2483 sdata->u.mgd.last_cqm_event_signal = 0; 2484 2485 /* tell the driver upon association, unless already associated */ 2486 if (sdata->u.mgd.associated && 2487 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2488 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2489 2490 return 0; 2491 } 2492 2493 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2494 struct net_device *dev, 2495 const u8 *addr, 2496 const struct cfg80211_bitrate_mask *mask) 2497 { 2498 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2500 int i, ret; 2501 2502 if (!ieee80211_sdata_running(sdata)) 2503 return -ENETDOWN; 2504 2505 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2506 ret = drv_set_bitrate_mask(local, sdata, mask); 2507 if (ret) 2508 return ret; 2509 } 2510 2511 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2512 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2513 int j; 2514 2515 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2516 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2517 sizeof(mask->control[i].ht_mcs)); 2518 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2519 mask->control[i].vht_mcs, 2520 sizeof(mask->control[i].vht_mcs)); 2521 2522 sdata->rc_has_mcs_mask[i] = false; 2523 sdata->rc_has_vht_mcs_mask[i] = false; 2524 if (!sband) 2525 continue; 2526 2527 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2528 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2529 sdata->rc_has_mcs_mask[i] = true; 2530 break; 2531 } 2532 } 2533 2534 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2535 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2536 sdata->rc_has_vht_mcs_mask[i] = true; 2537 break; 2538 } 2539 } 2540 } 2541 2542 return 0; 2543 } 2544 2545 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2546 struct net_device *dev, 2547 struct cfg80211_chan_def *chandef, 2548 u32 cac_time_ms) 2549 { 2550 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2551 struct ieee80211_local *local = sdata->local; 2552 int err; 2553 2554 mutex_lock(&local->mtx); 2555 if (!list_empty(&local->roc_list) || local->scanning) { 2556 err = -EBUSY; 2557 goto out_unlock; 2558 } 2559 2560 /* whatever, but channel contexts should not complain about that one */ 2561 sdata->smps_mode = IEEE80211_SMPS_OFF; 2562 sdata->needed_rx_chains = local->rx_chains; 2563 2564 err = ieee80211_vif_use_channel(sdata, chandef, 2565 IEEE80211_CHANCTX_SHARED); 2566 if (err) 2567 goto out_unlock; 2568 2569 ieee80211_queue_delayed_work(&sdata->local->hw, 2570 &sdata->dfs_cac_timer_work, 2571 msecs_to_jiffies(cac_time_ms)); 2572 2573 out_unlock: 2574 mutex_unlock(&local->mtx); 2575 return err; 2576 } 2577 2578 static struct cfg80211_beacon_data * 2579 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2580 { 2581 struct cfg80211_beacon_data *new_beacon; 2582 u8 *pos; 2583 int len; 2584 2585 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2586 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2587 beacon->probe_resp_len; 2588 2589 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2590 if (!new_beacon) 2591 return NULL; 2592 2593 pos = (u8 *)(new_beacon + 1); 2594 if (beacon->head_len) { 2595 new_beacon->head_len = beacon->head_len; 2596 new_beacon->head = pos; 2597 memcpy(pos, beacon->head, beacon->head_len); 2598 pos += beacon->head_len; 2599 } 2600 if (beacon->tail_len) { 2601 new_beacon->tail_len = beacon->tail_len; 2602 new_beacon->tail = pos; 2603 memcpy(pos, beacon->tail, beacon->tail_len); 2604 pos += beacon->tail_len; 2605 } 2606 if (beacon->beacon_ies_len) { 2607 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2608 new_beacon->beacon_ies = pos; 2609 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2610 pos += beacon->beacon_ies_len; 2611 } 2612 if (beacon->proberesp_ies_len) { 2613 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2614 new_beacon->proberesp_ies = pos; 2615 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2616 pos += beacon->proberesp_ies_len; 2617 } 2618 if (beacon->assocresp_ies_len) { 2619 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2620 new_beacon->assocresp_ies = pos; 2621 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2622 pos += beacon->assocresp_ies_len; 2623 } 2624 if (beacon->probe_resp_len) { 2625 new_beacon->probe_resp_len = beacon->probe_resp_len; 2626 beacon->probe_resp = pos; 2627 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2628 pos += beacon->probe_resp_len; 2629 } 2630 2631 return new_beacon; 2632 } 2633 2634 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2635 { 2636 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2637 2638 ieee80211_queue_work(&sdata->local->hw, 2639 &sdata->csa_finalize_work); 2640 } 2641 EXPORT_SYMBOL(ieee80211_csa_finish); 2642 2643 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2644 u32 *changed) 2645 { 2646 int err; 2647 2648 switch (sdata->vif.type) { 2649 case NL80211_IFTYPE_AP: 2650 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2651 NULL); 2652 kfree(sdata->u.ap.next_beacon); 2653 sdata->u.ap.next_beacon = NULL; 2654 2655 if (err < 0) 2656 return err; 2657 *changed |= err; 2658 break; 2659 case NL80211_IFTYPE_ADHOC: 2660 err = ieee80211_ibss_finish_csa(sdata); 2661 if (err < 0) 2662 return err; 2663 *changed |= err; 2664 break; 2665 #ifdef CONFIG_MAC80211_MESH 2666 case NL80211_IFTYPE_MESH_POINT: 2667 err = ieee80211_mesh_finish_csa(sdata); 2668 if (err < 0) 2669 return err; 2670 *changed |= err; 2671 break; 2672 #endif 2673 default: 2674 WARN_ON(1); 2675 return -EINVAL; 2676 } 2677 2678 return 0; 2679 } 2680 2681 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2682 { 2683 struct ieee80211_local *local = sdata->local; 2684 u32 changed = 0; 2685 int err; 2686 2687 sdata_assert_lock(sdata); 2688 lockdep_assert_held(&local->mtx); 2689 lockdep_assert_held(&local->chanctx_mtx); 2690 2691 /* 2692 * using reservation isn't immediate as it may be deferred until later 2693 * with multi-vif. once reservation is complete it will re-schedule the 2694 * work with no reserved_chanctx so verify chandef to check if it 2695 * completed successfully 2696 */ 2697 2698 if (sdata->reserved_chanctx) { 2699 /* 2700 * with multi-vif csa driver may call ieee80211_csa_finish() 2701 * many times while waiting for other interfaces to use their 2702 * reservations 2703 */ 2704 if (sdata->reserved_ready) 2705 return 0; 2706 2707 return ieee80211_vif_use_reserved_context(sdata); 2708 } 2709 2710 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2711 &sdata->csa_chandef)) 2712 return -EINVAL; 2713 2714 sdata->vif.csa_active = false; 2715 2716 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2717 if (err) 2718 return err; 2719 2720 ieee80211_bss_info_change_notify(sdata, changed); 2721 2722 if (sdata->csa_block_tx) { 2723 ieee80211_wake_vif_queues(local, sdata, 2724 IEEE80211_QUEUE_STOP_REASON_CSA); 2725 sdata->csa_block_tx = false; 2726 } 2727 2728 err = drv_post_channel_switch(sdata); 2729 if (err) 2730 return err; 2731 2732 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2733 2734 return 0; 2735 } 2736 2737 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2738 { 2739 if (__ieee80211_csa_finalize(sdata)) { 2740 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2741 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2742 GFP_KERNEL); 2743 } 2744 } 2745 2746 void ieee80211_csa_finalize_work(struct work_struct *work) 2747 { 2748 struct ieee80211_sub_if_data *sdata = 2749 container_of(work, struct ieee80211_sub_if_data, 2750 csa_finalize_work); 2751 struct ieee80211_local *local = sdata->local; 2752 2753 sdata_lock(sdata); 2754 mutex_lock(&local->mtx); 2755 mutex_lock(&local->chanctx_mtx); 2756 2757 /* AP might have been stopped while waiting for the lock. */ 2758 if (!sdata->vif.csa_active) 2759 goto unlock; 2760 2761 if (!ieee80211_sdata_running(sdata)) 2762 goto unlock; 2763 2764 ieee80211_csa_finalize(sdata); 2765 2766 unlock: 2767 mutex_unlock(&local->chanctx_mtx); 2768 mutex_unlock(&local->mtx); 2769 sdata_unlock(sdata); 2770 } 2771 2772 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 2773 struct cfg80211_csa_settings *params, 2774 u32 *changed) 2775 { 2776 struct ieee80211_csa_settings csa = {}; 2777 int err; 2778 2779 switch (sdata->vif.type) { 2780 case NL80211_IFTYPE_AP: 2781 sdata->u.ap.next_beacon = 2782 cfg80211_beacon_dup(¶ms->beacon_after); 2783 if (!sdata->u.ap.next_beacon) 2784 return -ENOMEM; 2785 2786 /* 2787 * With a count of 0, we don't have to wait for any 2788 * TBTT before switching, so complete the CSA 2789 * immediately. In theory, with a count == 1 we 2790 * should delay the switch until just before the next 2791 * TBTT, but that would complicate things so we switch 2792 * immediately too. If we would delay the switch 2793 * until the next TBTT, we would have to set the probe 2794 * response here. 2795 * 2796 * TODO: A channel switch with count <= 1 without 2797 * sending a CSA action frame is kind of useless, 2798 * because the clients won't know we're changing 2799 * channels. The action frame must be implemented 2800 * either here or in the userspace. 2801 */ 2802 if (params->count <= 1) 2803 break; 2804 2805 if ((params->n_counter_offsets_beacon > 2806 IEEE80211_MAX_CSA_COUNTERS_NUM) || 2807 (params->n_counter_offsets_presp > 2808 IEEE80211_MAX_CSA_COUNTERS_NUM)) 2809 return -EINVAL; 2810 2811 csa.counter_offsets_beacon = params->counter_offsets_beacon; 2812 csa.counter_offsets_presp = params->counter_offsets_presp; 2813 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 2814 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 2815 csa.count = params->count; 2816 2817 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 2818 if (err < 0) { 2819 kfree(sdata->u.ap.next_beacon); 2820 return err; 2821 } 2822 *changed |= err; 2823 2824 break; 2825 case NL80211_IFTYPE_ADHOC: 2826 if (!sdata->vif.bss_conf.ibss_joined) 2827 return -EINVAL; 2828 2829 if (params->chandef.width != sdata->u.ibss.chandef.width) 2830 return -EINVAL; 2831 2832 switch (params->chandef.width) { 2833 case NL80211_CHAN_WIDTH_40: 2834 if (cfg80211_get_chandef_type(¶ms->chandef) != 2835 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 2836 return -EINVAL; 2837 case NL80211_CHAN_WIDTH_5: 2838 case NL80211_CHAN_WIDTH_10: 2839 case NL80211_CHAN_WIDTH_20_NOHT: 2840 case NL80211_CHAN_WIDTH_20: 2841 break; 2842 default: 2843 return -EINVAL; 2844 } 2845 2846 /* changes into another band are not supported */ 2847 if (sdata->u.ibss.chandef.chan->band != 2848 params->chandef.chan->band) 2849 return -EINVAL; 2850 2851 /* see comments in the NL80211_IFTYPE_AP block */ 2852 if (params->count > 1) { 2853 err = ieee80211_ibss_csa_beacon(sdata, params); 2854 if (err < 0) 2855 return err; 2856 *changed |= err; 2857 } 2858 2859 ieee80211_send_action_csa(sdata, params); 2860 2861 break; 2862 #ifdef CONFIG_MAC80211_MESH 2863 case NL80211_IFTYPE_MESH_POINT: { 2864 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2865 2866 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 2867 return -EINVAL; 2868 2869 /* changes into another band are not supported */ 2870 if (sdata->vif.bss_conf.chandef.chan->band != 2871 params->chandef.chan->band) 2872 return -EINVAL; 2873 2874 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 2875 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 2876 if (!ifmsh->pre_value) 2877 ifmsh->pre_value = 1; 2878 else 2879 ifmsh->pre_value++; 2880 } 2881 2882 /* see comments in the NL80211_IFTYPE_AP block */ 2883 if (params->count > 1) { 2884 err = ieee80211_mesh_csa_beacon(sdata, params); 2885 if (err < 0) { 2886 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 2887 return err; 2888 } 2889 *changed |= err; 2890 } 2891 2892 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 2893 ieee80211_send_action_csa(sdata, params); 2894 2895 break; 2896 } 2897 #endif 2898 default: 2899 return -EOPNOTSUPP; 2900 } 2901 2902 return 0; 2903 } 2904 2905 static int 2906 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2907 struct cfg80211_csa_settings *params) 2908 { 2909 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2910 struct ieee80211_local *local = sdata->local; 2911 struct ieee80211_channel_switch ch_switch; 2912 struct ieee80211_chanctx_conf *conf; 2913 struct ieee80211_chanctx *chanctx; 2914 u32 changed = 0; 2915 int err; 2916 2917 sdata_assert_lock(sdata); 2918 lockdep_assert_held(&local->mtx); 2919 2920 if (!list_empty(&local->roc_list) || local->scanning) 2921 return -EBUSY; 2922 2923 if (sdata->wdev.cac_started) 2924 return -EBUSY; 2925 2926 if (cfg80211_chandef_identical(¶ms->chandef, 2927 &sdata->vif.bss_conf.chandef)) 2928 return -EINVAL; 2929 2930 /* don't allow another channel switch if one is already active. */ 2931 if (sdata->vif.csa_active) 2932 return -EBUSY; 2933 2934 mutex_lock(&local->chanctx_mtx); 2935 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2936 lockdep_is_held(&local->chanctx_mtx)); 2937 if (!conf) { 2938 err = -EBUSY; 2939 goto out; 2940 } 2941 2942 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2943 if (!chanctx) { 2944 err = -EBUSY; 2945 goto out; 2946 } 2947 2948 ch_switch.timestamp = 0; 2949 ch_switch.device_timestamp = 0; 2950 ch_switch.block_tx = params->block_tx; 2951 ch_switch.chandef = params->chandef; 2952 ch_switch.count = params->count; 2953 2954 err = drv_pre_channel_switch(sdata, &ch_switch); 2955 if (err) 2956 goto out; 2957 2958 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 2959 chanctx->mode, 2960 params->radar_required); 2961 if (err) 2962 goto out; 2963 2964 /* if reservation is invalid then this will fail */ 2965 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 2966 if (err) { 2967 ieee80211_vif_unreserve_chanctx(sdata); 2968 goto out; 2969 } 2970 2971 err = ieee80211_set_csa_beacon(sdata, params, &changed); 2972 if (err) { 2973 ieee80211_vif_unreserve_chanctx(sdata); 2974 goto out; 2975 } 2976 2977 sdata->csa_chandef = params->chandef; 2978 sdata->csa_block_tx = params->block_tx; 2979 sdata->vif.csa_active = true; 2980 2981 if (sdata->csa_block_tx) 2982 ieee80211_stop_vif_queues(local, sdata, 2983 IEEE80211_QUEUE_STOP_REASON_CSA); 2984 2985 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 2986 params->count); 2987 2988 if (changed) { 2989 ieee80211_bss_info_change_notify(sdata, changed); 2990 drv_channel_switch_beacon(sdata, ¶ms->chandef); 2991 } else { 2992 /* if the beacon didn't change, we can finalize immediately */ 2993 ieee80211_csa_finalize(sdata); 2994 } 2995 2996 out: 2997 mutex_unlock(&local->chanctx_mtx); 2998 return err; 2999 } 3000 3001 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3002 struct cfg80211_csa_settings *params) 3003 { 3004 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3005 struct ieee80211_local *local = sdata->local; 3006 int err; 3007 3008 mutex_lock(&local->mtx); 3009 err = __ieee80211_channel_switch(wiphy, dev, params); 3010 mutex_unlock(&local->mtx); 3011 3012 return err; 3013 } 3014 3015 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3016 { 3017 lockdep_assert_held(&local->mtx); 3018 3019 local->roc_cookie_counter++; 3020 3021 /* wow, you wrapped 64 bits ... more likely a bug */ 3022 if (WARN_ON(local->roc_cookie_counter == 0)) 3023 local->roc_cookie_counter++; 3024 3025 return local->roc_cookie_counter; 3026 } 3027 3028 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3029 u64 *cookie, gfp_t gfp) 3030 { 3031 unsigned long spin_flags; 3032 struct sk_buff *ack_skb; 3033 int id; 3034 3035 ack_skb = skb_copy(skb, gfp); 3036 if (!ack_skb) 3037 return -ENOMEM; 3038 3039 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3040 id = idr_alloc(&local->ack_status_frames, ack_skb, 3041 1, 0x10000, GFP_ATOMIC); 3042 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3043 3044 if (id < 0) { 3045 kfree_skb(ack_skb); 3046 return -ENOMEM; 3047 } 3048 3049 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3050 3051 *cookie = ieee80211_mgmt_tx_cookie(local); 3052 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3053 3054 return 0; 3055 } 3056 3057 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3058 struct wireless_dev *wdev, 3059 u16 frame_type, bool reg) 3060 { 3061 struct ieee80211_local *local = wiphy_priv(wiphy); 3062 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3063 3064 switch (frame_type) { 3065 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3066 if (reg) { 3067 local->probe_req_reg++; 3068 sdata->vif.probe_req_reg++; 3069 } else { 3070 if (local->probe_req_reg) 3071 local->probe_req_reg--; 3072 3073 if (sdata->vif.probe_req_reg) 3074 sdata->vif.probe_req_reg--; 3075 } 3076 3077 if (!local->open_count) 3078 break; 3079 3080 if (sdata->vif.probe_req_reg == 1) 3081 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3082 FIF_PROBE_REQ); 3083 else if (sdata->vif.probe_req_reg == 0) 3084 drv_config_iface_filter(local, sdata, 0, 3085 FIF_PROBE_REQ); 3086 3087 ieee80211_configure_filter(local); 3088 break; 3089 default: 3090 break; 3091 } 3092 } 3093 3094 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3095 { 3096 struct ieee80211_local *local = wiphy_priv(wiphy); 3097 3098 if (local->started) 3099 return -EOPNOTSUPP; 3100 3101 return drv_set_antenna(local, tx_ant, rx_ant); 3102 } 3103 3104 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3105 { 3106 struct ieee80211_local *local = wiphy_priv(wiphy); 3107 3108 return drv_get_antenna(local, tx_ant, rx_ant); 3109 } 3110 3111 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3112 struct net_device *dev, 3113 struct cfg80211_gtk_rekey_data *data) 3114 { 3115 struct ieee80211_local *local = wiphy_priv(wiphy); 3116 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3117 3118 if (!local->ops->set_rekey_data) 3119 return -EOPNOTSUPP; 3120 3121 drv_set_rekey_data(local, sdata, data); 3122 3123 return 0; 3124 } 3125 3126 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3127 const u8 *peer, u64 *cookie) 3128 { 3129 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3130 struct ieee80211_local *local = sdata->local; 3131 struct ieee80211_qos_hdr *nullfunc; 3132 struct sk_buff *skb; 3133 int size = sizeof(*nullfunc); 3134 __le16 fc; 3135 bool qos; 3136 struct ieee80211_tx_info *info; 3137 struct sta_info *sta; 3138 struct ieee80211_chanctx_conf *chanctx_conf; 3139 enum nl80211_band band; 3140 int ret; 3141 3142 /* the lock is needed to assign the cookie later */ 3143 mutex_lock(&local->mtx); 3144 3145 rcu_read_lock(); 3146 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3147 if (WARN_ON(!chanctx_conf)) { 3148 ret = -EINVAL; 3149 goto unlock; 3150 } 3151 band = chanctx_conf->def.chan->band; 3152 sta = sta_info_get_bss(sdata, peer); 3153 if (sta) { 3154 qos = sta->sta.wme; 3155 } else { 3156 ret = -ENOLINK; 3157 goto unlock; 3158 } 3159 3160 if (qos) { 3161 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3162 IEEE80211_STYPE_QOS_NULLFUNC | 3163 IEEE80211_FCTL_FROMDS); 3164 } else { 3165 size -= 2; 3166 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3167 IEEE80211_STYPE_NULLFUNC | 3168 IEEE80211_FCTL_FROMDS); 3169 } 3170 3171 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3172 if (!skb) { 3173 ret = -ENOMEM; 3174 goto unlock; 3175 } 3176 3177 skb->dev = dev; 3178 3179 skb_reserve(skb, local->hw.extra_tx_headroom); 3180 3181 nullfunc = (void *) skb_put(skb, size); 3182 nullfunc->frame_control = fc; 3183 nullfunc->duration_id = 0; 3184 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3185 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3186 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3187 nullfunc->seq_ctrl = 0; 3188 3189 info = IEEE80211_SKB_CB(skb); 3190 3191 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3192 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3193 info->band = band; 3194 3195 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3196 skb->priority = 7; 3197 if (qos) 3198 nullfunc->qos_ctrl = cpu_to_le16(7); 3199 3200 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3201 if (ret) { 3202 kfree_skb(skb); 3203 goto unlock; 3204 } 3205 3206 local_bh_disable(); 3207 ieee80211_xmit(sdata, sta, skb); 3208 local_bh_enable(); 3209 3210 ret = 0; 3211 unlock: 3212 rcu_read_unlock(); 3213 mutex_unlock(&local->mtx); 3214 3215 return ret; 3216 } 3217 3218 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3219 struct wireless_dev *wdev, 3220 struct cfg80211_chan_def *chandef) 3221 { 3222 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3223 struct ieee80211_local *local = wiphy_priv(wiphy); 3224 struct ieee80211_chanctx_conf *chanctx_conf; 3225 int ret = -ENODATA; 3226 3227 rcu_read_lock(); 3228 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3229 if (chanctx_conf) { 3230 *chandef = sdata->vif.bss_conf.chandef; 3231 ret = 0; 3232 } else if (local->open_count > 0 && 3233 local->open_count == local->monitors && 3234 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3235 if (local->use_chanctx) 3236 *chandef = local->monitor_chandef; 3237 else 3238 *chandef = local->_oper_chandef; 3239 ret = 0; 3240 } 3241 rcu_read_unlock(); 3242 3243 return ret; 3244 } 3245 3246 #ifdef CONFIG_PM 3247 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3248 { 3249 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3250 } 3251 #endif 3252 3253 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3254 struct net_device *dev, 3255 struct cfg80211_qos_map *qos_map) 3256 { 3257 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3258 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3259 3260 if (qos_map) { 3261 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3262 if (!new_qos_map) 3263 return -ENOMEM; 3264 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3265 } else { 3266 /* A NULL qos_map was passed to disable QoS mapping */ 3267 new_qos_map = NULL; 3268 } 3269 3270 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3271 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3272 if (old_qos_map) 3273 kfree_rcu(old_qos_map, rcu_head); 3274 3275 return 0; 3276 } 3277 3278 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3279 struct net_device *dev, 3280 struct cfg80211_chan_def *chandef) 3281 { 3282 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3283 int ret; 3284 u32 changed = 0; 3285 3286 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3287 if (ret == 0) 3288 ieee80211_bss_info_change_notify(sdata, changed); 3289 3290 return ret; 3291 } 3292 3293 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3294 u8 tsid, const u8 *peer, u8 up, 3295 u16 admitted_time) 3296 { 3297 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3298 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3299 int ac = ieee802_1d_to_ac[up]; 3300 3301 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3302 return -EOPNOTSUPP; 3303 3304 if (!(sdata->wmm_acm & BIT(up))) 3305 return -EINVAL; 3306 3307 if (ifmgd->tx_tspec[ac].admitted_time) 3308 return -EBUSY; 3309 3310 if (admitted_time) { 3311 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3312 ifmgd->tx_tspec[ac].tsid = tsid; 3313 ifmgd->tx_tspec[ac].up = up; 3314 } 3315 3316 return 0; 3317 } 3318 3319 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3320 u8 tsid, const u8 *peer) 3321 { 3322 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3323 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3324 struct ieee80211_local *local = wiphy_priv(wiphy); 3325 int ac; 3326 3327 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3328 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3329 3330 /* skip unused entries */ 3331 if (!tx_tspec->admitted_time) 3332 continue; 3333 3334 if (tx_tspec->tsid != tsid) 3335 continue; 3336 3337 /* due to this new packets will be reassigned to non-ACM ACs */ 3338 tx_tspec->up = -1; 3339 3340 /* Make sure that all packets have been sent to avoid to 3341 * restore the QoS params on packets that are still on the 3342 * queues. 3343 */ 3344 synchronize_net(); 3345 ieee80211_flush_queues(local, sdata, false); 3346 3347 /* restore the normal QoS parameters 3348 * (unconditionally to avoid races) 3349 */ 3350 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3351 tx_tspec->downgraded = false; 3352 ieee80211_sta_handle_tspec_ac_params(sdata); 3353 3354 /* finally clear all the data */ 3355 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3356 3357 return 0; 3358 } 3359 3360 return -ENOENT; 3361 } 3362 3363 const struct cfg80211_ops mac80211_config_ops = { 3364 .add_virtual_intf = ieee80211_add_iface, 3365 .del_virtual_intf = ieee80211_del_iface, 3366 .change_virtual_intf = ieee80211_change_iface, 3367 .start_p2p_device = ieee80211_start_p2p_device, 3368 .stop_p2p_device = ieee80211_stop_p2p_device, 3369 .add_key = ieee80211_add_key, 3370 .del_key = ieee80211_del_key, 3371 .get_key = ieee80211_get_key, 3372 .set_default_key = ieee80211_config_default_key, 3373 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3374 .start_ap = ieee80211_start_ap, 3375 .change_beacon = ieee80211_change_beacon, 3376 .stop_ap = ieee80211_stop_ap, 3377 .add_station = ieee80211_add_station, 3378 .del_station = ieee80211_del_station, 3379 .change_station = ieee80211_change_station, 3380 .get_station = ieee80211_get_station, 3381 .dump_station = ieee80211_dump_station, 3382 .dump_survey = ieee80211_dump_survey, 3383 #ifdef CONFIG_MAC80211_MESH 3384 .add_mpath = ieee80211_add_mpath, 3385 .del_mpath = ieee80211_del_mpath, 3386 .change_mpath = ieee80211_change_mpath, 3387 .get_mpath = ieee80211_get_mpath, 3388 .dump_mpath = ieee80211_dump_mpath, 3389 .get_mpp = ieee80211_get_mpp, 3390 .dump_mpp = ieee80211_dump_mpp, 3391 .update_mesh_config = ieee80211_update_mesh_config, 3392 .get_mesh_config = ieee80211_get_mesh_config, 3393 .join_mesh = ieee80211_join_mesh, 3394 .leave_mesh = ieee80211_leave_mesh, 3395 #endif 3396 .join_ocb = ieee80211_join_ocb, 3397 .leave_ocb = ieee80211_leave_ocb, 3398 .change_bss = ieee80211_change_bss, 3399 .set_txq_params = ieee80211_set_txq_params, 3400 .set_monitor_channel = ieee80211_set_monitor_channel, 3401 .suspend = ieee80211_suspend, 3402 .resume = ieee80211_resume, 3403 .scan = ieee80211_scan, 3404 .abort_scan = ieee80211_abort_scan, 3405 .sched_scan_start = ieee80211_sched_scan_start, 3406 .sched_scan_stop = ieee80211_sched_scan_stop, 3407 .auth = ieee80211_auth, 3408 .assoc = ieee80211_assoc, 3409 .deauth = ieee80211_deauth, 3410 .disassoc = ieee80211_disassoc, 3411 .join_ibss = ieee80211_join_ibss, 3412 .leave_ibss = ieee80211_leave_ibss, 3413 .set_mcast_rate = ieee80211_set_mcast_rate, 3414 .set_wiphy_params = ieee80211_set_wiphy_params, 3415 .set_tx_power = ieee80211_set_tx_power, 3416 .get_tx_power = ieee80211_get_tx_power, 3417 .set_wds_peer = ieee80211_set_wds_peer, 3418 .rfkill_poll = ieee80211_rfkill_poll, 3419 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3420 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3421 .set_power_mgmt = ieee80211_set_power_mgmt, 3422 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3423 .remain_on_channel = ieee80211_remain_on_channel, 3424 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3425 .mgmt_tx = ieee80211_mgmt_tx, 3426 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3427 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3428 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3429 .set_antenna = ieee80211_set_antenna, 3430 .get_antenna = ieee80211_get_antenna, 3431 .set_rekey_data = ieee80211_set_rekey_data, 3432 .tdls_oper = ieee80211_tdls_oper, 3433 .tdls_mgmt = ieee80211_tdls_mgmt, 3434 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3435 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3436 .probe_client = ieee80211_probe_client, 3437 .set_noack_map = ieee80211_set_noack_map, 3438 #ifdef CONFIG_PM 3439 .set_wakeup = ieee80211_set_wakeup, 3440 #endif 3441 .get_channel = ieee80211_cfg_get_channel, 3442 .start_radar_detection = ieee80211_start_radar_detection, 3443 .channel_switch = ieee80211_channel_switch, 3444 .set_qos_map = ieee80211_set_qos_map, 3445 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3446 .add_tx_ts = ieee80211_add_tx_ts, 3447 .del_tx_ts = ieee80211_del_tx_ts, 3448 }; 3449