1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * mac80211 configuration hooks for cfg80211 4 * 5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2015 Intel Mobile Communications GmbH 7 * Copyright (C) 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2019 Intel Corporation 9 * Copyright (C) 2018 Intel Corporation 10 */ 11 12 #include <linux/ieee80211.h> 13 #include <linux/nl80211.h> 14 #include <linux/rtnetlink.h> 15 #include <linux/slab.h> 16 #include <net/net_namespace.h> 17 #include <linux/rcupdate.h> 18 #include <linux/fips.h> 19 #include <linux/if_ether.h> 20 #include <net/cfg80211.h> 21 #include "ieee80211_i.h" 22 #include "driver-ops.h" 23 #include "rate.h" 24 #include "mesh.h" 25 #include "wme.h" 26 27 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata, 28 struct vif_params *params) 29 { 30 bool mu_mimo_groups = false; 31 bool mu_mimo_follow = false; 32 33 if (params->vht_mumimo_groups) { 34 u64 membership; 35 36 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN); 37 38 memcpy(sdata->vif.bss_conf.mu_group.membership, 39 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); 40 memcpy(sdata->vif.bss_conf.mu_group.position, 41 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, 42 WLAN_USER_POSITION_LEN); 43 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS); 44 /* don't care about endianness - just check for 0 */ 45 memcpy(&membership, params->vht_mumimo_groups, 46 WLAN_MEMBERSHIP_LEN); 47 mu_mimo_groups = membership != 0; 48 } 49 50 if (params->vht_mumimo_follow_addr) { 51 mu_mimo_follow = 52 is_valid_ether_addr(params->vht_mumimo_follow_addr); 53 ether_addr_copy(sdata->u.mntr.mu_follow_addr, 54 params->vht_mumimo_follow_addr); 55 } 56 57 sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow; 58 } 59 60 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, 61 struct vif_params *params) 62 { 63 struct ieee80211_local *local = sdata->local; 64 struct ieee80211_sub_if_data *monitor_sdata; 65 66 /* check flags first */ 67 if (params->flags && ieee80211_sdata_running(sdata)) { 68 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE; 69 70 /* 71 * Prohibit MONITOR_FLAG_COOK_FRAMES and 72 * MONITOR_FLAG_ACTIVE to be changed while the 73 * interface is up. 74 * Else we would need to add a lot of cruft 75 * to update everything: 76 * cooked_mntrs, monitor and all fif_* counters 77 * reconfigure hardware 78 */ 79 if ((params->flags & mask) != (sdata->u.mntr.flags & mask)) 80 return -EBUSY; 81 } 82 83 /* also validate MU-MIMO change */ 84 monitor_sdata = rtnl_dereference(local->monitor_sdata); 85 86 if (!monitor_sdata && 87 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr)) 88 return -EOPNOTSUPP; 89 90 /* apply all changes now - no failures allowed */ 91 92 if (monitor_sdata) 93 ieee80211_set_mu_mimo_follow(monitor_sdata, params); 94 95 if (params->flags) { 96 if (ieee80211_sdata_running(sdata)) { 97 ieee80211_adjust_monitor_flags(sdata, -1); 98 sdata->u.mntr.flags = params->flags; 99 ieee80211_adjust_monitor_flags(sdata, 1); 100 101 ieee80211_configure_filter(local); 102 } else { 103 /* 104 * Because the interface is down, ieee80211_do_stop 105 * and ieee80211_do_open take care of "everything" 106 * mentioned in the comment above. 107 */ 108 sdata->u.mntr.flags = params->flags; 109 } 110 } 111 112 return 0; 113 } 114 115 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 116 const char *name, 117 unsigned char name_assign_type, 118 enum nl80211_iftype type, 119 struct vif_params *params) 120 { 121 struct ieee80211_local *local = wiphy_priv(wiphy); 122 struct wireless_dev *wdev; 123 struct ieee80211_sub_if_data *sdata; 124 int err; 125 126 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 127 if (err) 128 return ERR_PTR(err); 129 130 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 131 132 if (type == NL80211_IFTYPE_MONITOR) { 133 err = ieee80211_set_mon_options(sdata, params); 134 if (err) { 135 ieee80211_if_remove(sdata); 136 return NULL; 137 } 138 } 139 140 return wdev; 141 } 142 143 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 144 { 145 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 146 147 return 0; 148 } 149 150 static int ieee80211_change_iface(struct wiphy *wiphy, 151 struct net_device *dev, 152 enum nl80211_iftype type, 153 struct vif_params *params) 154 { 155 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 156 int ret; 157 158 ret = ieee80211_if_change_type(sdata, type); 159 if (ret) 160 return ret; 161 162 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) { 163 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 164 ieee80211_check_fast_rx_iface(sdata); 165 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { 166 sdata->u.mgd.use_4addr = params->use_4addr; 167 } 168 169 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 170 ret = ieee80211_set_mon_options(sdata, params); 171 if (ret) 172 return ret; 173 } 174 175 return 0; 176 } 177 178 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 179 struct wireless_dev *wdev) 180 { 181 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 182 int ret; 183 184 mutex_lock(&sdata->local->chanctx_mtx); 185 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 186 mutex_unlock(&sdata->local->chanctx_mtx); 187 if (ret < 0) 188 return ret; 189 190 return ieee80211_do_open(wdev, true); 191 } 192 193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 194 struct wireless_dev *wdev) 195 { 196 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 197 } 198 199 static int ieee80211_start_nan(struct wiphy *wiphy, 200 struct wireless_dev *wdev, 201 struct cfg80211_nan_conf *conf) 202 { 203 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 204 int ret; 205 206 mutex_lock(&sdata->local->chanctx_mtx); 207 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 208 mutex_unlock(&sdata->local->chanctx_mtx); 209 if (ret < 0) 210 return ret; 211 212 ret = ieee80211_do_open(wdev, true); 213 if (ret) 214 return ret; 215 216 ret = drv_start_nan(sdata->local, sdata, conf); 217 if (ret) 218 ieee80211_sdata_stop(sdata); 219 220 sdata->u.nan.conf = *conf; 221 222 return ret; 223 } 224 225 static void ieee80211_stop_nan(struct wiphy *wiphy, 226 struct wireless_dev *wdev) 227 { 228 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 229 230 drv_stop_nan(sdata->local, sdata); 231 ieee80211_sdata_stop(sdata); 232 } 233 234 static int ieee80211_nan_change_conf(struct wiphy *wiphy, 235 struct wireless_dev *wdev, 236 struct cfg80211_nan_conf *conf, 237 u32 changes) 238 { 239 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 240 struct cfg80211_nan_conf new_conf; 241 int ret = 0; 242 243 if (sdata->vif.type != NL80211_IFTYPE_NAN) 244 return -EOPNOTSUPP; 245 246 if (!ieee80211_sdata_running(sdata)) 247 return -ENETDOWN; 248 249 new_conf = sdata->u.nan.conf; 250 251 if (changes & CFG80211_NAN_CONF_CHANGED_PREF) 252 new_conf.master_pref = conf->master_pref; 253 254 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS) 255 new_conf.bands = conf->bands; 256 257 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes); 258 if (!ret) 259 sdata->u.nan.conf = new_conf; 260 261 return ret; 262 } 263 264 static int ieee80211_add_nan_func(struct wiphy *wiphy, 265 struct wireless_dev *wdev, 266 struct cfg80211_nan_func *nan_func) 267 { 268 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 269 int ret; 270 271 if (sdata->vif.type != NL80211_IFTYPE_NAN) 272 return -EOPNOTSUPP; 273 274 if (!ieee80211_sdata_running(sdata)) 275 return -ENETDOWN; 276 277 spin_lock_bh(&sdata->u.nan.func_lock); 278 279 ret = idr_alloc(&sdata->u.nan.function_inst_ids, 280 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1, 281 GFP_ATOMIC); 282 spin_unlock_bh(&sdata->u.nan.func_lock); 283 284 if (ret < 0) 285 return ret; 286 287 nan_func->instance_id = ret; 288 289 WARN_ON(nan_func->instance_id == 0); 290 291 ret = drv_add_nan_func(sdata->local, sdata, nan_func); 292 if (ret) { 293 spin_lock_bh(&sdata->u.nan.func_lock); 294 idr_remove(&sdata->u.nan.function_inst_ids, 295 nan_func->instance_id); 296 spin_unlock_bh(&sdata->u.nan.func_lock); 297 } 298 299 return ret; 300 } 301 302 static struct cfg80211_nan_func * 303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata, 304 u64 cookie) 305 { 306 struct cfg80211_nan_func *func; 307 int id; 308 309 lockdep_assert_held(&sdata->u.nan.func_lock); 310 311 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) { 312 if (func->cookie == cookie) 313 return func; 314 } 315 316 return NULL; 317 } 318 319 static void ieee80211_del_nan_func(struct wiphy *wiphy, 320 struct wireless_dev *wdev, u64 cookie) 321 { 322 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 323 struct cfg80211_nan_func *func; 324 u8 instance_id = 0; 325 326 if (sdata->vif.type != NL80211_IFTYPE_NAN || 327 !ieee80211_sdata_running(sdata)) 328 return; 329 330 spin_lock_bh(&sdata->u.nan.func_lock); 331 332 func = ieee80211_find_nan_func_by_cookie(sdata, cookie); 333 if (func) 334 instance_id = func->instance_id; 335 336 spin_unlock_bh(&sdata->u.nan.func_lock); 337 338 if (instance_id) 339 drv_del_nan_func(sdata->local, sdata, instance_id); 340 } 341 342 static int ieee80211_set_noack_map(struct wiphy *wiphy, 343 struct net_device *dev, 344 u16 noack_map) 345 { 346 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 347 348 sdata->noack_map = noack_map; 349 350 ieee80211_check_fast_xmit_iface(sdata); 351 352 return 0; 353 } 354 355 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata, 356 const u8 *mac_addr, u8 key_idx) 357 { 358 struct ieee80211_local *local = sdata->local; 359 struct ieee80211_key *key; 360 struct sta_info *sta; 361 int ret = -EINVAL; 362 363 if (!wiphy_ext_feature_isset(local->hw.wiphy, 364 NL80211_EXT_FEATURE_EXT_KEY_ID)) 365 return -EINVAL; 366 367 sta = sta_info_get_bss(sdata, mac_addr); 368 369 if (!sta) 370 return -EINVAL; 371 372 if (sta->ptk_idx == key_idx) 373 return 0; 374 375 mutex_lock(&local->key_mtx); 376 key = key_mtx_dereference(local, sta->ptk[key_idx]); 377 378 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) 379 ret = ieee80211_set_tx_key(key); 380 381 mutex_unlock(&local->key_mtx); 382 return ret; 383 } 384 385 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 386 u8 key_idx, bool pairwise, const u8 *mac_addr, 387 struct key_params *params) 388 { 389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 390 struct ieee80211_local *local = sdata->local; 391 struct sta_info *sta = NULL; 392 const struct ieee80211_cipher_scheme *cs = NULL; 393 struct ieee80211_key *key; 394 int err; 395 396 if (!ieee80211_sdata_running(sdata)) 397 return -ENETDOWN; 398 399 if (pairwise && params->mode == NL80211_KEY_SET_TX) 400 return ieee80211_set_tx(sdata, mac_addr, key_idx); 401 402 /* reject WEP and TKIP keys if WEP failed to initialize */ 403 switch (params->cipher) { 404 case WLAN_CIPHER_SUITE_WEP40: 405 case WLAN_CIPHER_SUITE_TKIP: 406 case WLAN_CIPHER_SUITE_WEP104: 407 if (WARN_ON_ONCE(fips_enabled)) 408 return -EINVAL; 409 case WLAN_CIPHER_SUITE_CCMP: 410 case WLAN_CIPHER_SUITE_CCMP_256: 411 case WLAN_CIPHER_SUITE_AES_CMAC: 412 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 413 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 414 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 415 case WLAN_CIPHER_SUITE_GCMP: 416 case WLAN_CIPHER_SUITE_GCMP_256: 417 break; 418 default: 419 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 420 break; 421 } 422 423 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 424 params->key, params->seq_len, params->seq, 425 cs); 426 if (IS_ERR(key)) 427 return PTR_ERR(key); 428 429 if (pairwise) 430 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 431 432 if (params->mode == NL80211_KEY_NO_TX) 433 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX; 434 435 mutex_lock(&local->sta_mtx); 436 437 if (mac_addr) { 438 sta = sta_info_get_bss(sdata, mac_addr); 439 /* 440 * The ASSOC test makes sure the driver is ready to 441 * receive the key. When wpa_supplicant has roamed 442 * using FT, it attempts to set the key before 443 * association has completed, this rejects that attempt 444 * so it will set the key again after association. 445 * 446 * TODO: accept the key if we have a station entry and 447 * add it to the device after the station. 448 */ 449 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 450 ieee80211_key_free_unused(key); 451 err = -ENOENT; 452 goto out_unlock; 453 } 454 } 455 456 switch (sdata->vif.type) { 457 case NL80211_IFTYPE_STATION: 458 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 459 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 460 break; 461 case NL80211_IFTYPE_AP: 462 case NL80211_IFTYPE_AP_VLAN: 463 /* Keys without a station are used for TX only */ 464 if (sta && test_sta_flag(sta, WLAN_STA_MFP)) 465 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 466 break; 467 case NL80211_IFTYPE_ADHOC: 468 /* no MFP (yet) */ 469 break; 470 case NL80211_IFTYPE_MESH_POINT: 471 #ifdef CONFIG_MAC80211_MESH 472 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 473 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 474 break; 475 #endif 476 case NL80211_IFTYPE_WDS: 477 case NL80211_IFTYPE_MONITOR: 478 case NL80211_IFTYPE_P2P_DEVICE: 479 case NL80211_IFTYPE_NAN: 480 case NL80211_IFTYPE_UNSPECIFIED: 481 case NUM_NL80211_IFTYPES: 482 case NL80211_IFTYPE_P2P_CLIENT: 483 case NL80211_IFTYPE_P2P_GO: 484 case NL80211_IFTYPE_OCB: 485 /* shouldn't happen */ 486 WARN_ON_ONCE(1); 487 break; 488 } 489 490 if (sta) 491 sta->cipher_scheme = cs; 492 493 err = ieee80211_key_link(key, sdata, sta); 494 495 out_unlock: 496 mutex_unlock(&local->sta_mtx); 497 498 return err; 499 } 500 501 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 502 u8 key_idx, bool pairwise, const u8 *mac_addr) 503 { 504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 505 struct ieee80211_local *local = sdata->local; 506 struct sta_info *sta; 507 struct ieee80211_key *key = NULL; 508 int ret; 509 510 mutex_lock(&local->sta_mtx); 511 mutex_lock(&local->key_mtx); 512 513 if (mac_addr) { 514 ret = -ENOENT; 515 516 sta = sta_info_get_bss(sdata, mac_addr); 517 if (!sta) 518 goto out_unlock; 519 520 if (pairwise) 521 key = key_mtx_dereference(local, sta->ptk[key_idx]); 522 else 523 key = key_mtx_dereference(local, sta->gtk[key_idx]); 524 } else 525 key = key_mtx_dereference(local, sdata->keys[key_idx]); 526 527 if (!key) { 528 ret = -ENOENT; 529 goto out_unlock; 530 } 531 532 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION); 533 534 ret = 0; 535 out_unlock: 536 mutex_unlock(&local->key_mtx); 537 mutex_unlock(&local->sta_mtx); 538 539 return ret; 540 } 541 542 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 543 u8 key_idx, bool pairwise, const u8 *mac_addr, 544 void *cookie, 545 void (*callback)(void *cookie, 546 struct key_params *params)) 547 { 548 struct ieee80211_sub_if_data *sdata; 549 struct sta_info *sta = NULL; 550 u8 seq[6] = {0}; 551 struct key_params params; 552 struct ieee80211_key *key = NULL; 553 u64 pn64; 554 u32 iv32; 555 u16 iv16; 556 int err = -ENOENT; 557 struct ieee80211_key_seq kseq = {}; 558 559 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 560 561 rcu_read_lock(); 562 563 if (mac_addr) { 564 sta = sta_info_get_bss(sdata, mac_addr); 565 if (!sta) 566 goto out; 567 568 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 569 key = rcu_dereference(sta->ptk[key_idx]); 570 else if (!pairwise && 571 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 572 key = rcu_dereference(sta->gtk[key_idx]); 573 } else 574 key = rcu_dereference(sdata->keys[key_idx]); 575 576 if (!key) 577 goto out; 578 579 memset(¶ms, 0, sizeof(params)); 580 581 params.cipher = key->conf.cipher; 582 583 switch (key->conf.cipher) { 584 case WLAN_CIPHER_SUITE_TKIP: 585 pn64 = atomic64_read(&key->conf.tx_pn); 586 iv32 = TKIP_PN_TO_IV32(pn64); 587 iv16 = TKIP_PN_TO_IV16(pn64); 588 589 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 590 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 591 drv_get_key_seq(sdata->local, key, &kseq); 592 iv32 = kseq.tkip.iv32; 593 iv16 = kseq.tkip.iv16; 594 } 595 596 seq[0] = iv16 & 0xff; 597 seq[1] = (iv16 >> 8) & 0xff; 598 seq[2] = iv32 & 0xff; 599 seq[3] = (iv32 >> 8) & 0xff; 600 seq[4] = (iv32 >> 16) & 0xff; 601 seq[5] = (iv32 >> 24) & 0xff; 602 params.seq = seq; 603 params.seq_len = 6; 604 break; 605 case WLAN_CIPHER_SUITE_CCMP: 606 case WLAN_CIPHER_SUITE_CCMP_256: 607 case WLAN_CIPHER_SUITE_AES_CMAC: 608 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 609 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 610 offsetof(typeof(kseq), aes_cmac)); 611 /* fall through */ 612 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 613 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 614 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 615 offsetof(typeof(kseq), aes_gmac)); 616 /* fall through */ 617 case WLAN_CIPHER_SUITE_GCMP: 618 case WLAN_CIPHER_SUITE_GCMP_256: 619 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 620 offsetof(typeof(kseq), gcmp)); 621 622 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 623 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 624 drv_get_key_seq(sdata->local, key, &kseq); 625 memcpy(seq, kseq.ccmp.pn, 6); 626 } else { 627 pn64 = atomic64_read(&key->conf.tx_pn); 628 seq[0] = pn64; 629 seq[1] = pn64 >> 8; 630 seq[2] = pn64 >> 16; 631 seq[3] = pn64 >> 24; 632 seq[4] = pn64 >> 32; 633 seq[5] = pn64 >> 40; 634 } 635 params.seq = seq; 636 params.seq_len = 6; 637 break; 638 default: 639 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 640 break; 641 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 642 break; 643 drv_get_key_seq(sdata->local, key, &kseq); 644 params.seq = kseq.hw.seq; 645 params.seq_len = kseq.hw.seq_len; 646 break; 647 } 648 649 params.key = key->conf.key; 650 params.key_len = key->conf.keylen; 651 652 callback(cookie, ¶ms); 653 err = 0; 654 655 out: 656 rcu_read_unlock(); 657 return err; 658 } 659 660 static int ieee80211_config_default_key(struct wiphy *wiphy, 661 struct net_device *dev, 662 u8 key_idx, bool uni, 663 bool multi) 664 { 665 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 666 667 ieee80211_set_default_key(sdata, key_idx, uni, multi); 668 669 return 0; 670 } 671 672 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 673 struct net_device *dev, 674 u8 key_idx) 675 { 676 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 677 678 ieee80211_set_default_mgmt_key(sdata, key_idx); 679 680 return 0; 681 } 682 683 void sta_set_rate_info_tx(struct sta_info *sta, 684 const struct ieee80211_tx_rate *rate, 685 struct rate_info *rinfo) 686 { 687 rinfo->flags = 0; 688 if (rate->flags & IEEE80211_TX_RC_MCS) { 689 rinfo->flags |= RATE_INFO_FLAGS_MCS; 690 rinfo->mcs = rate->idx; 691 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 692 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 693 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 694 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 695 } else { 696 struct ieee80211_supported_band *sband; 697 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 698 u16 brate; 699 700 sband = ieee80211_get_sband(sta->sdata); 701 if (sband) { 702 brate = sband->bitrates[rate->idx].bitrate; 703 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 704 } 705 } 706 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 707 rinfo->bw = RATE_INFO_BW_40; 708 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 709 rinfo->bw = RATE_INFO_BW_80; 710 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 711 rinfo->bw = RATE_INFO_BW_160; 712 else 713 rinfo->bw = RATE_INFO_BW_20; 714 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 715 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 716 } 717 718 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 719 int idx, u8 *mac, struct station_info *sinfo) 720 { 721 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 722 struct ieee80211_local *local = sdata->local; 723 struct sta_info *sta; 724 int ret = -ENOENT; 725 726 mutex_lock(&local->sta_mtx); 727 728 sta = sta_info_get_by_idx(sdata, idx); 729 if (sta) { 730 ret = 0; 731 memcpy(mac, sta->sta.addr, ETH_ALEN); 732 sta_set_sinfo(sta, sinfo, true); 733 } 734 735 mutex_unlock(&local->sta_mtx); 736 737 return ret; 738 } 739 740 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 741 int idx, struct survey_info *survey) 742 { 743 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 744 745 return drv_get_survey(local, idx, survey); 746 } 747 748 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 749 const u8 *mac, struct station_info *sinfo) 750 { 751 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 752 struct ieee80211_local *local = sdata->local; 753 struct sta_info *sta; 754 int ret = -ENOENT; 755 756 mutex_lock(&local->sta_mtx); 757 758 sta = sta_info_get_bss(sdata, mac); 759 if (sta) { 760 ret = 0; 761 sta_set_sinfo(sta, sinfo, true); 762 } 763 764 mutex_unlock(&local->sta_mtx); 765 766 return ret; 767 } 768 769 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 770 struct cfg80211_chan_def *chandef) 771 { 772 struct ieee80211_local *local = wiphy_priv(wiphy); 773 struct ieee80211_sub_if_data *sdata; 774 int ret = 0; 775 776 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 777 return 0; 778 779 mutex_lock(&local->mtx); 780 if (local->use_chanctx) { 781 sdata = rtnl_dereference(local->monitor_sdata); 782 if (sdata) { 783 ieee80211_vif_release_channel(sdata); 784 ret = ieee80211_vif_use_channel(sdata, chandef, 785 IEEE80211_CHANCTX_EXCLUSIVE); 786 } 787 } else if (local->open_count == local->monitors) { 788 local->_oper_chandef = *chandef; 789 ieee80211_hw_config(local, 0); 790 } 791 792 if (ret == 0) 793 local->monitor_chandef = *chandef; 794 mutex_unlock(&local->mtx); 795 796 return ret; 797 } 798 799 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 800 const u8 *resp, size_t resp_len, 801 const struct ieee80211_csa_settings *csa) 802 { 803 struct probe_resp *new, *old; 804 805 if (!resp || !resp_len) 806 return 1; 807 808 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 809 810 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 811 if (!new) 812 return -ENOMEM; 813 814 new->len = resp_len; 815 memcpy(new->data, resp, resp_len); 816 817 if (csa) 818 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 819 csa->n_counter_offsets_presp * 820 sizeof(new->csa_counter_offsets[0])); 821 822 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 823 if (old) 824 kfree_rcu(old, rcu_head); 825 826 return 0; 827 } 828 829 static int ieee80211_set_ftm_responder_params( 830 struct ieee80211_sub_if_data *sdata, 831 const u8 *lci, size_t lci_len, 832 const u8 *civicloc, size_t civicloc_len) 833 { 834 struct ieee80211_ftm_responder_params *new, *old; 835 struct ieee80211_bss_conf *bss_conf; 836 u8 *pos; 837 int len; 838 839 if (!lci_len && !civicloc_len) 840 return 0; 841 842 bss_conf = &sdata->vif.bss_conf; 843 old = bss_conf->ftmr_params; 844 len = lci_len + civicloc_len; 845 846 new = kzalloc(sizeof(*new) + len, GFP_KERNEL); 847 if (!new) 848 return -ENOMEM; 849 850 pos = (u8 *)(new + 1); 851 if (lci_len) { 852 new->lci_len = lci_len; 853 new->lci = pos; 854 memcpy(pos, lci, lci_len); 855 pos += lci_len; 856 } 857 858 if (civicloc_len) { 859 new->civicloc_len = civicloc_len; 860 new->civicloc = pos; 861 memcpy(pos, civicloc, civicloc_len); 862 pos += civicloc_len; 863 } 864 865 bss_conf->ftmr_params = new; 866 kfree(old); 867 868 return 0; 869 } 870 871 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 872 struct cfg80211_beacon_data *params, 873 const struct ieee80211_csa_settings *csa) 874 { 875 struct beacon_data *new, *old; 876 int new_head_len, new_tail_len; 877 int size, err; 878 u32 changed = BSS_CHANGED_BEACON; 879 880 old = sdata_dereference(sdata->u.ap.beacon, sdata); 881 882 883 /* Need to have a beacon head if we don't have one yet */ 884 if (!params->head && !old) 885 return -EINVAL; 886 887 /* new or old head? */ 888 if (params->head) 889 new_head_len = params->head_len; 890 else 891 new_head_len = old->head_len; 892 893 /* new or old tail? */ 894 if (params->tail || !old) 895 /* params->tail_len will be zero for !params->tail */ 896 new_tail_len = params->tail_len; 897 else 898 new_tail_len = old->tail_len; 899 900 size = sizeof(*new) + new_head_len + new_tail_len; 901 902 new = kzalloc(size, GFP_KERNEL); 903 if (!new) 904 return -ENOMEM; 905 906 /* start filling the new info now */ 907 908 /* 909 * pointers go into the block we allocated, 910 * memory is | beacon_data | head | tail | 911 */ 912 new->head = ((u8 *) new) + sizeof(*new); 913 new->tail = new->head + new_head_len; 914 new->head_len = new_head_len; 915 new->tail_len = new_tail_len; 916 917 if (csa) { 918 new->csa_current_counter = csa->count; 919 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 920 csa->n_counter_offsets_beacon * 921 sizeof(new->csa_counter_offsets[0])); 922 } 923 924 /* copy in head */ 925 if (params->head) 926 memcpy(new->head, params->head, new_head_len); 927 else 928 memcpy(new->head, old->head, new_head_len); 929 930 /* copy in optional tail */ 931 if (params->tail) 932 memcpy(new->tail, params->tail, new_tail_len); 933 else 934 if (old) 935 memcpy(new->tail, old->tail, new_tail_len); 936 937 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 938 params->probe_resp_len, csa); 939 if (err < 0) { 940 kfree(new); 941 return err; 942 } 943 if (err == 0) 944 changed |= BSS_CHANGED_AP_PROBE_RESP; 945 946 if (params->ftm_responder != -1) { 947 sdata->vif.bss_conf.ftm_responder = params->ftm_responder; 948 err = ieee80211_set_ftm_responder_params(sdata, 949 params->lci, 950 params->lci_len, 951 params->civicloc, 952 params->civicloc_len); 953 954 if (err < 0) { 955 kfree(new); 956 return err; 957 } 958 959 changed |= BSS_CHANGED_FTM_RESPONDER; 960 } 961 962 rcu_assign_pointer(sdata->u.ap.beacon, new); 963 964 if (old) 965 kfree_rcu(old, rcu_head); 966 967 return changed; 968 } 969 970 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 971 struct cfg80211_ap_settings *params) 972 { 973 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 974 struct ieee80211_local *local = sdata->local; 975 struct beacon_data *old; 976 struct ieee80211_sub_if_data *vlan; 977 u32 changed = BSS_CHANGED_BEACON_INT | 978 BSS_CHANGED_BEACON_ENABLED | 979 BSS_CHANGED_BEACON | 980 BSS_CHANGED_SSID | 981 BSS_CHANGED_P2P_PS | 982 BSS_CHANGED_TXPOWER | 983 BSS_CHANGED_TWT | 984 BSS_CHANGED_HE_OBSS_PD; 985 int err; 986 int prev_beacon_int; 987 988 old = sdata_dereference(sdata->u.ap.beacon, sdata); 989 if (old) 990 return -EALREADY; 991 992 switch (params->smps_mode) { 993 case NL80211_SMPS_OFF: 994 sdata->smps_mode = IEEE80211_SMPS_OFF; 995 break; 996 case NL80211_SMPS_STATIC: 997 sdata->smps_mode = IEEE80211_SMPS_STATIC; 998 break; 999 case NL80211_SMPS_DYNAMIC: 1000 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 1001 break; 1002 default: 1003 return -EINVAL; 1004 } 1005 sdata->u.ap.req_smps = sdata->smps_mode; 1006 1007 sdata->needed_rx_chains = sdata->local->rx_chains; 1008 1009 prev_beacon_int = sdata->vif.bss_conf.beacon_int; 1010 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1011 1012 if (params->he_cap) 1013 sdata->vif.bss_conf.he_support = true; 1014 1015 mutex_lock(&local->mtx); 1016 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 1017 IEEE80211_CHANCTX_SHARED); 1018 if (!err) 1019 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 1020 mutex_unlock(&local->mtx); 1021 if (err) { 1022 sdata->vif.bss_conf.beacon_int = prev_beacon_int; 1023 return err; 1024 } 1025 1026 /* 1027 * Apply control port protocol, this allows us to 1028 * not encrypt dynamic WEP control frames. 1029 */ 1030 sdata->control_port_protocol = params->crypto.control_port_ethertype; 1031 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 1032 sdata->control_port_over_nl80211 = 1033 params->crypto.control_port_over_nl80211; 1034 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 1035 ¶ms->crypto, 1036 sdata->vif.type); 1037 1038 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1039 vlan->control_port_protocol = 1040 params->crypto.control_port_ethertype; 1041 vlan->control_port_no_encrypt = 1042 params->crypto.control_port_no_encrypt; 1043 vlan->control_port_over_nl80211 = 1044 params->crypto.control_port_over_nl80211; 1045 vlan->encrypt_headroom = 1046 ieee80211_cs_headroom(sdata->local, 1047 ¶ms->crypto, 1048 vlan->vif.type); 1049 } 1050 1051 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1052 sdata->vif.bss_conf.enable_beacon = true; 1053 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 1054 sdata->vif.bss_conf.twt_responder = params->twt_responder; 1055 memcpy(&sdata->vif.bss_conf.he_obss_pd, ¶ms->he_obss_pd, 1056 sizeof(struct ieee80211_he_obss_pd)); 1057 1058 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1059 if (params->ssid_len) 1060 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1061 params->ssid_len); 1062 sdata->vif.bss_conf.hidden_ssid = 1063 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1064 1065 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1066 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1067 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1068 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1069 if (params->p2p_opp_ps) 1070 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1071 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1072 1073 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 1074 if (err < 0) { 1075 ieee80211_vif_release_channel(sdata); 1076 return err; 1077 } 1078 changed |= err; 1079 1080 err = drv_start_ap(sdata->local, sdata); 1081 if (err) { 1082 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1083 1084 if (old) 1085 kfree_rcu(old, rcu_head); 1086 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1087 ieee80211_vif_release_channel(sdata); 1088 return err; 1089 } 1090 1091 ieee80211_recalc_dtim(local, sdata); 1092 ieee80211_bss_info_change_notify(sdata, changed); 1093 1094 netif_carrier_on(dev); 1095 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1096 netif_carrier_on(vlan->dev); 1097 1098 return 0; 1099 } 1100 1101 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1102 struct cfg80211_beacon_data *params) 1103 { 1104 struct ieee80211_sub_if_data *sdata; 1105 struct beacon_data *old; 1106 int err; 1107 1108 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1109 sdata_assert_lock(sdata); 1110 1111 /* don't allow changing the beacon while CSA is in place - offset 1112 * of channel switch counter may change 1113 */ 1114 if (sdata->vif.csa_active) 1115 return -EBUSY; 1116 1117 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1118 if (!old) 1119 return -ENOENT; 1120 1121 err = ieee80211_assign_beacon(sdata, params, NULL); 1122 if (err < 0) 1123 return err; 1124 ieee80211_bss_info_change_notify(sdata, err); 1125 return 0; 1126 } 1127 1128 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1129 { 1130 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1131 struct ieee80211_sub_if_data *vlan; 1132 struct ieee80211_local *local = sdata->local; 1133 struct beacon_data *old_beacon; 1134 struct probe_resp *old_probe_resp; 1135 struct cfg80211_chan_def chandef; 1136 1137 sdata_assert_lock(sdata); 1138 1139 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1140 if (!old_beacon) 1141 return -ENOENT; 1142 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1143 1144 /* abort any running channel switch */ 1145 mutex_lock(&local->mtx); 1146 sdata->vif.csa_active = false; 1147 if (sdata->csa_block_tx) { 1148 ieee80211_wake_vif_queues(local, sdata, 1149 IEEE80211_QUEUE_STOP_REASON_CSA); 1150 sdata->csa_block_tx = false; 1151 } 1152 1153 mutex_unlock(&local->mtx); 1154 1155 kfree(sdata->u.ap.next_beacon); 1156 sdata->u.ap.next_beacon = NULL; 1157 1158 /* turn off carrier for this interface and dependent VLANs */ 1159 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1160 netif_carrier_off(vlan->dev); 1161 netif_carrier_off(dev); 1162 1163 /* remove beacon and probe response */ 1164 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1165 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1166 kfree_rcu(old_beacon, rcu_head); 1167 if (old_probe_resp) 1168 kfree_rcu(old_probe_resp, rcu_head); 1169 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 1170 1171 kfree(sdata->vif.bss_conf.ftmr_params); 1172 sdata->vif.bss_conf.ftmr_params = NULL; 1173 1174 __sta_info_flush(sdata, true); 1175 ieee80211_free_keys(sdata, true); 1176 1177 sdata->vif.bss_conf.enable_beacon = false; 1178 sdata->vif.bss_conf.ssid_len = 0; 1179 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1180 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1181 1182 if (sdata->wdev.cac_started) { 1183 chandef = sdata->vif.bss_conf.chandef; 1184 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1185 cfg80211_cac_event(sdata->dev, &chandef, 1186 NL80211_RADAR_CAC_ABORTED, 1187 GFP_KERNEL); 1188 } 1189 1190 drv_stop_ap(sdata->local, sdata); 1191 1192 /* free all potentially still buffered bcast frames */ 1193 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1194 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); 1195 1196 mutex_lock(&local->mtx); 1197 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1198 ieee80211_vif_release_channel(sdata); 1199 mutex_unlock(&local->mtx); 1200 1201 return 0; 1202 } 1203 1204 static int sta_apply_auth_flags(struct ieee80211_local *local, 1205 struct sta_info *sta, 1206 u32 mask, u32 set) 1207 { 1208 int ret; 1209 1210 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1211 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1212 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1213 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1214 if (ret) 1215 return ret; 1216 } 1217 1218 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1219 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1220 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1221 /* 1222 * When peer becomes associated, init rate control as 1223 * well. Some drivers require rate control initialized 1224 * before drv_sta_state() is called. 1225 */ 1226 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 1227 rate_control_rate_init(sta); 1228 1229 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1230 if (ret) 1231 return ret; 1232 } 1233 1234 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1235 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1236 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1237 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1238 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1239 else 1240 ret = 0; 1241 if (ret) 1242 return ret; 1243 } 1244 1245 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1246 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1247 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1248 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1249 if (ret) 1250 return ret; 1251 } 1252 1253 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1254 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1255 test_sta_flag(sta, WLAN_STA_AUTH)) { 1256 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1257 if (ret) 1258 return ret; 1259 } 1260 1261 return 0; 1262 } 1263 1264 static void sta_apply_mesh_params(struct ieee80211_local *local, 1265 struct sta_info *sta, 1266 struct station_parameters *params) 1267 { 1268 #ifdef CONFIG_MAC80211_MESH 1269 struct ieee80211_sub_if_data *sdata = sta->sdata; 1270 u32 changed = 0; 1271 1272 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1273 switch (params->plink_state) { 1274 case NL80211_PLINK_ESTAB: 1275 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 1276 changed = mesh_plink_inc_estab_count(sdata); 1277 sta->mesh->plink_state = params->plink_state; 1278 sta->mesh->aid = params->peer_aid; 1279 1280 ieee80211_mps_sta_status_update(sta); 1281 changed |= ieee80211_mps_set_sta_local_pm(sta, 1282 sdata->u.mesh.mshcfg.power_mode); 1283 1284 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg); 1285 /* init at low value */ 1286 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10); 1287 1288 break; 1289 case NL80211_PLINK_LISTEN: 1290 case NL80211_PLINK_BLOCKED: 1291 case NL80211_PLINK_OPN_SNT: 1292 case NL80211_PLINK_OPN_RCVD: 1293 case NL80211_PLINK_CNF_RCVD: 1294 case NL80211_PLINK_HOLDING: 1295 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1296 changed = mesh_plink_dec_estab_count(sdata); 1297 sta->mesh->plink_state = params->plink_state; 1298 1299 ieee80211_mps_sta_status_update(sta); 1300 changed |= ieee80211_mps_set_sta_local_pm(sta, 1301 NL80211_MESH_POWER_UNKNOWN); 1302 break; 1303 default: 1304 /* nothing */ 1305 break; 1306 } 1307 } 1308 1309 switch (params->plink_action) { 1310 case NL80211_PLINK_ACTION_NO_ACTION: 1311 /* nothing */ 1312 break; 1313 case NL80211_PLINK_ACTION_OPEN: 1314 changed |= mesh_plink_open(sta); 1315 break; 1316 case NL80211_PLINK_ACTION_BLOCK: 1317 changed |= mesh_plink_block(sta); 1318 break; 1319 } 1320 1321 if (params->local_pm) 1322 changed |= ieee80211_mps_set_sta_local_pm(sta, 1323 params->local_pm); 1324 1325 ieee80211_mbss_info_change_notify(sdata, changed); 1326 #endif 1327 } 1328 1329 static int sta_apply_parameters(struct ieee80211_local *local, 1330 struct sta_info *sta, 1331 struct station_parameters *params) 1332 { 1333 int ret = 0; 1334 struct ieee80211_supported_band *sband; 1335 struct ieee80211_sub_if_data *sdata = sta->sdata; 1336 u32 mask, set; 1337 1338 sband = ieee80211_get_sband(sdata); 1339 if (!sband) 1340 return -EINVAL; 1341 1342 mask = params->sta_flags_mask; 1343 set = params->sta_flags_set; 1344 1345 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1346 /* 1347 * In mesh mode, ASSOCIATED isn't part of the nl80211 1348 * API but must follow AUTHENTICATED for driver state. 1349 */ 1350 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1351 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1352 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1353 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1354 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1355 /* 1356 * TDLS -- everything follows authorized, but 1357 * only becoming authorized is possible, not 1358 * going back 1359 */ 1360 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1361 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1362 BIT(NL80211_STA_FLAG_ASSOCIATED); 1363 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1364 BIT(NL80211_STA_FLAG_ASSOCIATED); 1365 } 1366 } 1367 1368 if (mask & BIT(NL80211_STA_FLAG_WME) && 1369 local->hw.queues >= IEEE80211_NUM_ACS) 1370 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1371 1372 /* auth flags will be set later for TDLS, 1373 * and for unassociated stations that move to assocaited */ 1374 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1375 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1376 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1377 ret = sta_apply_auth_flags(local, sta, mask, set); 1378 if (ret) 1379 return ret; 1380 } 1381 1382 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1383 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1384 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1385 else 1386 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1387 } 1388 1389 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1390 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1391 if (set & BIT(NL80211_STA_FLAG_MFP)) 1392 set_sta_flag(sta, WLAN_STA_MFP); 1393 else 1394 clear_sta_flag(sta, WLAN_STA_MFP); 1395 } 1396 1397 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1398 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1399 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1400 else 1401 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1402 } 1403 1404 /* mark TDLS channel switch support, if the AP allows it */ 1405 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1406 !sdata->u.mgd.tdls_chan_switch_prohibited && 1407 params->ext_capab_len >= 4 && 1408 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1409 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1410 1411 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1412 !sdata->u.mgd.tdls_wider_bw_prohibited && 1413 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1414 params->ext_capab_len >= 8 && 1415 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1416 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1417 1418 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1419 sta->sta.uapsd_queues = params->uapsd_queues; 1420 sta->sta.max_sp = params->max_sp; 1421 } 1422 1423 /* The sender might not have sent the last bit, consider it to be 0 */ 1424 if (params->ext_capab_len >= 8) { 1425 u8 val = (params->ext_capab[7] & 1426 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1427 1428 /* we did get all the bits, take the MSB as well */ 1429 if (params->ext_capab_len >= 9) { 1430 u8 val_msb = params->ext_capab[8] & 1431 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1432 val_msb <<= 1; 1433 val |= val_msb; 1434 } 1435 1436 switch (val) { 1437 case 1: 1438 sta->sta.max_amsdu_subframes = 32; 1439 break; 1440 case 2: 1441 sta->sta.max_amsdu_subframes = 16; 1442 break; 1443 case 3: 1444 sta->sta.max_amsdu_subframes = 8; 1445 break; 1446 default: 1447 sta->sta.max_amsdu_subframes = 0; 1448 } 1449 } 1450 1451 /* 1452 * cfg80211 validates this (1-2007) and allows setting the AID 1453 * only when creating a new station entry 1454 */ 1455 if (params->aid) 1456 sta->sta.aid = params->aid; 1457 1458 /* 1459 * Some of the following updates would be racy if called on an 1460 * existing station, via ieee80211_change_station(). However, 1461 * all such changes are rejected by cfg80211 except for updates 1462 * changing the supported rates on an existing but not yet used 1463 * TDLS peer. 1464 */ 1465 1466 if (params->listen_interval >= 0) 1467 sta->listen_interval = params->listen_interval; 1468 1469 if (params->sta_modify_mask & STATION_PARAM_APPLY_STA_TXPOWER) { 1470 sta->sta.txpwr.type = params->txpwr.type; 1471 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) 1472 sta->sta.txpwr.power = params->txpwr.power; 1473 ret = drv_sta_set_txpwr(local, sdata, sta); 1474 if (ret) 1475 return ret; 1476 } 1477 1478 if (params->supported_rates && params->supported_rates_len) { 1479 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1480 sband, params->supported_rates, 1481 params->supported_rates_len, 1482 &sta->sta.supp_rates[sband->band]); 1483 } 1484 1485 if (params->ht_capa) 1486 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1487 params->ht_capa, sta); 1488 1489 /* VHT can override some HT caps such as the A-MSDU max length */ 1490 if (params->vht_capa) 1491 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1492 params->vht_capa, sta); 1493 1494 if (params->he_capa) 1495 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, 1496 (void *)params->he_capa, 1497 params->he_capa_len, sta); 1498 1499 if (params->opmode_notif_used) { 1500 /* returned value is only needed for rc update, but the 1501 * rc isn't initialized here yet, so ignore it 1502 */ 1503 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif, 1504 sband->band); 1505 } 1506 1507 if (params->support_p2p_ps >= 0) 1508 sta->sta.support_p2p_ps = params->support_p2p_ps; 1509 1510 if (ieee80211_vif_is_mesh(&sdata->vif)) 1511 sta_apply_mesh_params(local, sta, params); 1512 1513 if (params->airtime_weight) 1514 sta->airtime_weight = params->airtime_weight; 1515 1516 /* set the STA state after all sta info from usermode has been set */ 1517 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1518 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1519 ret = sta_apply_auth_flags(local, sta, mask, set); 1520 if (ret) 1521 return ret; 1522 } 1523 1524 return 0; 1525 } 1526 1527 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1528 const u8 *mac, 1529 struct station_parameters *params) 1530 { 1531 struct ieee80211_local *local = wiphy_priv(wiphy); 1532 struct sta_info *sta; 1533 struct ieee80211_sub_if_data *sdata; 1534 int err; 1535 1536 if (params->vlan) { 1537 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1538 1539 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1540 sdata->vif.type != NL80211_IFTYPE_AP) 1541 return -EINVAL; 1542 } else 1543 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1544 1545 if (ether_addr_equal(mac, sdata->vif.addr)) 1546 return -EINVAL; 1547 1548 if (!is_valid_ether_addr(mac)) 1549 return -EINVAL; 1550 1551 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) && 1552 sdata->vif.type == NL80211_IFTYPE_STATION && 1553 !sdata->u.mgd.associated) 1554 return -EINVAL; 1555 1556 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1557 if (!sta) 1558 return -ENOMEM; 1559 1560 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1561 sta->sta.tdls = true; 1562 1563 err = sta_apply_parameters(local, sta, params); 1564 if (err) { 1565 sta_info_free(local, sta); 1566 return err; 1567 } 1568 1569 /* 1570 * for TDLS and for unassociated station, rate control should be 1571 * initialized only when rates are known and station is marked 1572 * authorized/associated 1573 */ 1574 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1575 test_sta_flag(sta, WLAN_STA_ASSOC)) 1576 rate_control_rate_init(sta); 1577 1578 err = sta_info_insert_rcu(sta); 1579 if (err) { 1580 rcu_read_unlock(); 1581 return err; 1582 } 1583 1584 rcu_read_unlock(); 1585 1586 return 0; 1587 } 1588 1589 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1590 struct station_del_parameters *params) 1591 { 1592 struct ieee80211_sub_if_data *sdata; 1593 1594 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1595 1596 if (params->mac) 1597 return sta_info_destroy_addr_bss(sdata, params->mac); 1598 1599 sta_info_flush(sdata); 1600 return 0; 1601 } 1602 1603 static int ieee80211_change_station(struct wiphy *wiphy, 1604 struct net_device *dev, const u8 *mac, 1605 struct station_parameters *params) 1606 { 1607 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1608 struct ieee80211_local *local = wiphy_priv(wiphy); 1609 struct sta_info *sta; 1610 struct ieee80211_sub_if_data *vlansdata; 1611 enum cfg80211_station_type statype; 1612 int err; 1613 1614 mutex_lock(&local->sta_mtx); 1615 1616 sta = sta_info_get_bss(sdata, mac); 1617 if (!sta) { 1618 err = -ENOENT; 1619 goto out_err; 1620 } 1621 1622 switch (sdata->vif.type) { 1623 case NL80211_IFTYPE_MESH_POINT: 1624 if (sdata->u.mesh.user_mpm) 1625 statype = CFG80211_STA_MESH_PEER_USER; 1626 else 1627 statype = CFG80211_STA_MESH_PEER_KERNEL; 1628 break; 1629 case NL80211_IFTYPE_ADHOC: 1630 statype = CFG80211_STA_IBSS; 1631 break; 1632 case NL80211_IFTYPE_STATION: 1633 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1634 statype = CFG80211_STA_AP_STA; 1635 break; 1636 } 1637 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1638 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1639 else 1640 statype = CFG80211_STA_TDLS_PEER_SETUP; 1641 break; 1642 case NL80211_IFTYPE_AP: 1643 case NL80211_IFTYPE_AP_VLAN: 1644 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1645 statype = CFG80211_STA_AP_CLIENT; 1646 else 1647 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1648 break; 1649 default: 1650 err = -EOPNOTSUPP; 1651 goto out_err; 1652 } 1653 1654 err = cfg80211_check_station_change(wiphy, params, statype); 1655 if (err) 1656 goto out_err; 1657 1658 if (params->vlan && params->vlan != sta->sdata->dev) { 1659 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1660 1661 if (params->vlan->ieee80211_ptr->use_4addr) { 1662 if (vlansdata->u.vlan.sta) { 1663 err = -EBUSY; 1664 goto out_err; 1665 } 1666 1667 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1668 __ieee80211_check_fast_rx_iface(vlansdata); 1669 } 1670 1671 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1672 sta->sdata->u.vlan.sta) 1673 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1674 1675 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1676 ieee80211_vif_dec_num_mcast(sta->sdata); 1677 1678 sta->sdata = vlansdata; 1679 ieee80211_check_fast_xmit(sta); 1680 1681 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { 1682 ieee80211_vif_inc_num_mcast(sta->sdata); 1683 cfg80211_send_layer2_update(sta->sdata->dev, 1684 sta->sta.addr); 1685 } 1686 } 1687 1688 err = sta_apply_parameters(local, sta, params); 1689 if (err) 1690 goto out_err; 1691 1692 mutex_unlock(&local->sta_mtx); 1693 1694 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1695 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1696 sta->known_smps_mode != sta->sdata->bss->req_smps && 1697 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1698 sta_info_tx_streams(sta) != 1) { 1699 ht_dbg(sta->sdata, 1700 "%pM just authorized and MIMO capable - update SMPS\n", 1701 sta->sta.addr); 1702 ieee80211_send_smps_action(sta->sdata, 1703 sta->sdata->bss->req_smps, 1704 sta->sta.addr, 1705 sta->sdata->vif.bss_conf.bssid); 1706 } 1707 1708 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1709 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1710 ieee80211_recalc_ps(local); 1711 ieee80211_recalc_ps_vif(sdata); 1712 } 1713 1714 return 0; 1715 out_err: 1716 mutex_unlock(&local->sta_mtx); 1717 return err; 1718 } 1719 1720 #ifdef CONFIG_MAC80211_MESH 1721 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1722 const u8 *dst, const u8 *next_hop) 1723 { 1724 struct ieee80211_sub_if_data *sdata; 1725 struct mesh_path *mpath; 1726 struct sta_info *sta; 1727 1728 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1729 1730 rcu_read_lock(); 1731 sta = sta_info_get(sdata, next_hop); 1732 if (!sta) { 1733 rcu_read_unlock(); 1734 return -ENOENT; 1735 } 1736 1737 mpath = mesh_path_add(sdata, dst); 1738 if (IS_ERR(mpath)) { 1739 rcu_read_unlock(); 1740 return PTR_ERR(mpath); 1741 } 1742 1743 mesh_path_fix_nexthop(mpath, sta); 1744 1745 rcu_read_unlock(); 1746 return 0; 1747 } 1748 1749 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1750 const u8 *dst) 1751 { 1752 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1753 1754 if (dst) 1755 return mesh_path_del(sdata, dst); 1756 1757 mesh_path_flush_by_iface(sdata); 1758 return 0; 1759 } 1760 1761 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1762 const u8 *dst, const u8 *next_hop) 1763 { 1764 struct ieee80211_sub_if_data *sdata; 1765 struct mesh_path *mpath; 1766 struct sta_info *sta; 1767 1768 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1769 1770 rcu_read_lock(); 1771 1772 sta = sta_info_get(sdata, next_hop); 1773 if (!sta) { 1774 rcu_read_unlock(); 1775 return -ENOENT; 1776 } 1777 1778 mpath = mesh_path_lookup(sdata, dst); 1779 if (!mpath) { 1780 rcu_read_unlock(); 1781 return -ENOENT; 1782 } 1783 1784 mesh_path_fix_nexthop(mpath, sta); 1785 1786 rcu_read_unlock(); 1787 return 0; 1788 } 1789 1790 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1791 struct mpath_info *pinfo) 1792 { 1793 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1794 1795 if (next_hop_sta) 1796 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1797 else 1798 eth_zero_addr(next_hop); 1799 1800 memset(pinfo, 0, sizeof(*pinfo)); 1801 1802 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 1803 1804 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1805 MPATH_INFO_SN | 1806 MPATH_INFO_METRIC | 1807 MPATH_INFO_EXPTIME | 1808 MPATH_INFO_DISCOVERY_TIMEOUT | 1809 MPATH_INFO_DISCOVERY_RETRIES | 1810 MPATH_INFO_FLAGS | 1811 MPATH_INFO_HOP_COUNT | 1812 MPATH_INFO_PATH_CHANGE; 1813 1814 pinfo->frame_qlen = mpath->frame_queue.qlen; 1815 pinfo->sn = mpath->sn; 1816 pinfo->metric = mpath->metric; 1817 if (time_before(jiffies, mpath->exp_time)) 1818 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1819 pinfo->discovery_timeout = 1820 jiffies_to_msecs(mpath->discovery_timeout); 1821 pinfo->discovery_retries = mpath->discovery_retries; 1822 if (mpath->flags & MESH_PATH_ACTIVE) 1823 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1824 if (mpath->flags & MESH_PATH_RESOLVING) 1825 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1826 if (mpath->flags & MESH_PATH_SN_VALID) 1827 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1828 if (mpath->flags & MESH_PATH_FIXED) 1829 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1830 if (mpath->flags & MESH_PATH_RESOLVED) 1831 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1832 pinfo->hop_count = mpath->hop_count; 1833 pinfo->path_change_count = mpath->path_change_count; 1834 } 1835 1836 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1837 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1838 1839 { 1840 struct ieee80211_sub_if_data *sdata; 1841 struct mesh_path *mpath; 1842 1843 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1844 1845 rcu_read_lock(); 1846 mpath = mesh_path_lookup(sdata, dst); 1847 if (!mpath) { 1848 rcu_read_unlock(); 1849 return -ENOENT; 1850 } 1851 memcpy(dst, mpath->dst, ETH_ALEN); 1852 mpath_set_pinfo(mpath, next_hop, pinfo); 1853 rcu_read_unlock(); 1854 return 0; 1855 } 1856 1857 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1858 int idx, u8 *dst, u8 *next_hop, 1859 struct mpath_info *pinfo) 1860 { 1861 struct ieee80211_sub_if_data *sdata; 1862 struct mesh_path *mpath; 1863 1864 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1865 1866 rcu_read_lock(); 1867 mpath = mesh_path_lookup_by_idx(sdata, idx); 1868 if (!mpath) { 1869 rcu_read_unlock(); 1870 return -ENOENT; 1871 } 1872 memcpy(dst, mpath->dst, ETH_ALEN); 1873 mpath_set_pinfo(mpath, next_hop, pinfo); 1874 rcu_read_unlock(); 1875 return 0; 1876 } 1877 1878 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1879 struct mpath_info *pinfo) 1880 { 1881 memset(pinfo, 0, sizeof(*pinfo)); 1882 memcpy(mpp, mpath->mpp, ETH_ALEN); 1883 1884 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 1885 } 1886 1887 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1888 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1889 1890 { 1891 struct ieee80211_sub_if_data *sdata; 1892 struct mesh_path *mpath; 1893 1894 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1895 1896 rcu_read_lock(); 1897 mpath = mpp_path_lookup(sdata, dst); 1898 if (!mpath) { 1899 rcu_read_unlock(); 1900 return -ENOENT; 1901 } 1902 memcpy(dst, mpath->dst, ETH_ALEN); 1903 mpp_set_pinfo(mpath, mpp, pinfo); 1904 rcu_read_unlock(); 1905 return 0; 1906 } 1907 1908 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1909 int idx, u8 *dst, u8 *mpp, 1910 struct mpath_info *pinfo) 1911 { 1912 struct ieee80211_sub_if_data *sdata; 1913 struct mesh_path *mpath; 1914 1915 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1916 1917 rcu_read_lock(); 1918 mpath = mpp_path_lookup_by_idx(sdata, idx); 1919 if (!mpath) { 1920 rcu_read_unlock(); 1921 return -ENOENT; 1922 } 1923 memcpy(dst, mpath->dst, ETH_ALEN); 1924 mpp_set_pinfo(mpath, mpp, pinfo); 1925 rcu_read_unlock(); 1926 return 0; 1927 } 1928 1929 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1930 struct net_device *dev, 1931 struct mesh_config *conf) 1932 { 1933 struct ieee80211_sub_if_data *sdata; 1934 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1935 1936 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1937 return 0; 1938 } 1939 1940 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1941 { 1942 return (mask >> (parm-1)) & 0x1; 1943 } 1944 1945 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1946 const struct mesh_setup *setup) 1947 { 1948 u8 *new_ie; 1949 const u8 *old_ie; 1950 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1951 struct ieee80211_sub_if_data, u.mesh); 1952 1953 /* allocate information elements */ 1954 new_ie = NULL; 1955 old_ie = ifmsh->ie; 1956 1957 if (setup->ie_len) { 1958 new_ie = kmemdup(setup->ie, setup->ie_len, 1959 GFP_KERNEL); 1960 if (!new_ie) 1961 return -ENOMEM; 1962 } 1963 ifmsh->ie_len = setup->ie_len; 1964 ifmsh->ie = new_ie; 1965 kfree(old_ie); 1966 1967 /* now copy the rest of the setup parameters */ 1968 ifmsh->mesh_id_len = setup->mesh_id_len; 1969 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1970 ifmsh->mesh_sp_id = setup->sync_method; 1971 ifmsh->mesh_pp_id = setup->path_sel_proto; 1972 ifmsh->mesh_pm_id = setup->path_metric; 1973 ifmsh->user_mpm = setup->user_mpm; 1974 ifmsh->mesh_auth_id = setup->auth_id; 1975 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1976 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs; 1977 if (setup->is_authenticated) 1978 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1979 if (setup->is_secure) 1980 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1981 1982 /* mcast rate setting in Mesh Node */ 1983 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1984 sizeof(setup->mcast_rate)); 1985 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1986 1987 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1988 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1989 1990 return 0; 1991 } 1992 1993 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1994 struct net_device *dev, u32 mask, 1995 const struct mesh_config *nconf) 1996 { 1997 struct mesh_config *conf; 1998 struct ieee80211_sub_if_data *sdata; 1999 struct ieee80211_if_mesh *ifmsh; 2000 2001 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2002 ifmsh = &sdata->u.mesh; 2003 2004 /* Set the config options which we are interested in setting */ 2005 conf = &(sdata->u.mesh.mshcfg); 2006 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 2007 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 2008 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 2009 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 2010 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 2011 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 2012 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 2013 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 2014 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 2015 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 2016 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 2017 conf->dot11MeshTTL = nconf->dot11MeshTTL; 2018 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 2019 conf->element_ttl = nconf->element_ttl; 2020 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 2021 if (ifmsh->user_mpm) 2022 return -EBUSY; 2023 conf->auto_open_plinks = nconf->auto_open_plinks; 2024 } 2025 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 2026 conf->dot11MeshNbrOffsetMaxNeighbor = 2027 nconf->dot11MeshNbrOffsetMaxNeighbor; 2028 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 2029 conf->dot11MeshHWMPmaxPREQretries = 2030 nconf->dot11MeshHWMPmaxPREQretries; 2031 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 2032 conf->path_refresh_time = nconf->path_refresh_time; 2033 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 2034 conf->min_discovery_timeout = nconf->min_discovery_timeout; 2035 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 2036 conf->dot11MeshHWMPactivePathTimeout = 2037 nconf->dot11MeshHWMPactivePathTimeout; 2038 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 2039 conf->dot11MeshHWMPpreqMinInterval = 2040 nconf->dot11MeshHWMPpreqMinInterval; 2041 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 2042 conf->dot11MeshHWMPperrMinInterval = 2043 nconf->dot11MeshHWMPperrMinInterval; 2044 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 2045 mask)) 2046 conf->dot11MeshHWMPnetDiameterTraversalTime = 2047 nconf->dot11MeshHWMPnetDiameterTraversalTime; 2048 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 2049 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 2050 ieee80211_mesh_root_setup(ifmsh); 2051 } 2052 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 2053 /* our current gate announcement implementation rides on root 2054 * announcements, so require this ifmsh to also be a root node 2055 * */ 2056 if (nconf->dot11MeshGateAnnouncementProtocol && 2057 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 2058 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 2059 ieee80211_mesh_root_setup(ifmsh); 2060 } 2061 conf->dot11MeshGateAnnouncementProtocol = 2062 nconf->dot11MeshGateAnnouncementProtocol; 2063 } 2064 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 2065 conf->dot11MeshHWMPRannInterval = 2066 nconf->dot11MeshHWMPRannInterval; 2067 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 2068 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 2069 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 2070 /* our RSSI threshold implementation is supported only for 2071 * devices that report signal in dBm. 2072 */ 2073 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 2074 return -ENOTSUPP; 2075 conf->rssi_threshold = nconf->rssi_threshold; 2076 } 2077 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 2078 conf->ht_opmode = nconf->ht_opmode; 2079 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 2080 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 2081 } 2082 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 2083 conf->dot11MeshHWMPactivePathToRootTimeout = 2084 nconf->dot11MeshHWMPactivePathToRootTimeout; 2085 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 2086 conf->dot11MeshHWMProotInterval = 2087 nconf->dot11MeshHWMProotInterval; 2088 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 2089 conf->dot11MeshHWMPconfirmationInterval = 2090 nconf->dot11MeshHWMPconfirmationInterval; 2091 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 2092 conf->power_mode = nconf->power_mode; 2093 ieee80211_mps_local_status_update(sdata); 2094 } 2095 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 2096 conf->dot11MeshAwakeWindowDuration = 2097 nconf->dot11MeshAwakeWindowDuration; 2098 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 2099 conf->plink_timeout = nconf->plink_timeout; 2100 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) 2101 conf->dot11MeshConnectedToMeshGate = 2102 nconf->dot11MeshConnectedToMeshGate; 2103 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 2104 return 0; 2105 } 2106 2107 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 2108 const struct mesh_config *conf, 2109 const struct mesh_setup *setup) 2110 { 2111 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2112 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2113 int err; 2114 2115 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 2116 err = copy_mesh_setup(ifmsh, setup); 2117 if (err) 2118 return err; 2119 2120 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211; 2121 2122 /* can mesh use other SMPS modes? */ 2123 sdata->smps_mode = IEEE80211_SMPS_OFF; 2124 sdata->needed_rx_chains = sdata->local->rx_chains; 2125 2126 mutex_lock(&sdata->local->mtx); 2127 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 2128 IEEE80211_CHANCTX_SHARED); 2129 mutex_unlock(&sdata->local->mtx); 2130 if (err) 2131 return err; 2132 2133 return ieee80211_start_mesh(sdata); 2134 } 2135 2136 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 2137 { 2138 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2139 2140 ieee80211_stop_mesh(sdata); 2141 mutex_lock(&sdata->local->mtx); 2142 ieee80211_vif_release_channel(sdata); 2143 mutex_unlock(&sdata->local->mtx); 2144 2145 return 0; 2146 } 2147 #endif 2148 2149 static int ieee80211_change_bss(struct wiphy *wiphy, 2150 struct net_device *dev, 2151 struct bss_parameters *params) 2152 { 2153 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2154 struct ieee80211_supported_band *sband; 2155 u32 changed = 0; 2156 2157 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 2158 return -ENOENT; 2159 2160 sband = ieee80211_get_sband(sdata); 2161 if (!sband) 2162 return -EINVAL; 2163 2164 if (params->use_cts_prot >= 0) { 2165 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 2166 changed |= BSS_CHANGED_ERP_CTS_PROT; 2167 } 2168 if (params->use_short_preamble >= 0) { 2169 sdata->vif.bss_conf.use_short_preamble = 2170 params->use_short_preamble; 2171 changed |= BSS_CHANGED_ERP_PREAMBLE; 2172 } 2173 2174 if (!sdata->vif.bss_conf.use_short_slot && 2175 sband->band == NL80211_BAND_5GHZ) { 2176 sdata->vif.bss_conf.use_short_slot = true; 2177 changed |= BSS_CHANGED_ERP_SLOT; 2178 } 2179 2180 if (params->use_short_slot_time >= 0) { 2181 sdata->vif.bss_conf.use_short_slot = 2182 params->use_short_slot_time; 2183 changed |= BSS_CHANGED_ERP_SLOT; 2184 } 2185 2186 if (params->basic_rates) { 2187 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2188 wiphy->bands[sband->band], 2189 params->basic_rates, 2190 params->basic_rates_len, 2191 &sdata->vif.bss_conf.basic_rates); 2192 changed |= BSS_CHANGED_BASIC_RATES; 2193 ieee80211_check_rate_mask(sdata); 2194 } 2195 2196 if (params->ap_isolate >= 0) { 2197 if (params->ap_isolate) 2198 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2199 else 2200 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2201 ieee80211_check_fast_rx_iface(sdata); 2202 } 2203 2204 if (params->ht_opmode >= 0) { 2205 sdata->vif.bss_conf.ht_operation_mode = 2206 (u16) params->ht_opmode; 2207 changed |= BSS_CHANGED_HT; 2208 } 2209 2210 if (params->p2p_ctwindow >= 0) { 2211 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2212 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2213 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2214 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2215 changed |= BSS_CHANGED_P2P_PS; 2216 } 2217 2218 if (params->p2p_opp_ps > 0) { 2219 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2220 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2221 changed |= BSS_CHANGED_P2P_PS; 2222 } else if (params->p2p_opp_ps == 0) { 2223 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2224 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2225 changed |= BSS_CHANGED_P2P_PS; 2226 } 2227 2228 ieee80211_bss_info_change_notify(sdata, changed); 2229 2230 return 0; 2231 } 2232 2233 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2234 struct net_device *dev, 2235 struct ieee80211_txq_params *params) 2236 { 2237 struct ieee80211_local *local = wiphy_priv(wiphy); 2238 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2239 struct ieee80211_tx_queue_params p; 2240 2241 if (!local->ops->conf_tx) 2242 return -EOPNOTSUPP; 2243 2244 if (local->hw.queues < IEEE80211_NUM_ACS) 2245 return -EOPNOTSUPP; 2246 2247 memset(&p, 0, sizeof(p)); 2248 p.aifs = params->aifs; 2249 p.cw_max = params->cwmax; 2250 p.cw_min = params->cwmin; 2251 p.txop = params->txop; 2252 2253 /* 2254 * Setting tx queue params disables u-apsd because it's only 2255 * called in master mode. 2256 */ 2257 p.uapsd = false; 2258 2259 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac); 2260 2261 sdata->tx_conf[params->ac] = p; 2262 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2263 wiphy_debug(local->hw.wiphy, 2264 "failed to set TX queue parameters for AC %d\n", 2265 params->ac); 2266 return -EINVAL; 2267 } 2268 2269 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2270 2271 return 0; 2272 } 2273 2274 #ifdef CONFIG_PM 2275 static int ieee80211_suspend(struct wiphy *wiphy, 2276 struct cfg80211_wowlan *wowlan) 2277 { 2278 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2279 } 2280 2281 static int ieee80211_resume(struct wiphy *wiphy) 2282 { 2283 return __ieee80211_resume(wiphy_priv(wiphy)); 2284 } 2285 #else 2286 #define ieee80211_suspend NULL 2287 #define ieee80211_resume NULL 2288 #endif 2289 2290 static int ieee80211_scan(struct wiphy *wiphy, 2291 struct cfg80211_scan_request *req) 2292 { 2293 struct ieee80211_sub_if_data *sdata; 2294 2295 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2296 2297 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2298 case NL80211_IFTYPE_STATION: 2299 case NL80211_IFTYPE_ADHOC: 2300 case NL80211_IFTYPE_MESH_POINT: 2301 case NL80211_IFTYPE_P2P_CLIENT: 2302 case NL80211_IFTYPE_P2P_DEVICE: 2303 break; 2304 case NL80211_IFTYPE_P2P_GO: 2305 if (sdata->local->ops->hw_scan) 2306 break; 2307 /* 2308 * FIXME: implement NoA while scanning in software, 2309 * for now fall through to allow scanning only when 2310 * beaconing hasn't been configured yet 2311 */ 2312 /* fall through */ 2313 case NL80211_IFTYPE_AP: 2314 /* 2315 * If the scan has been forced (and the driver supports 2316 * forcing), don't care about being beaconing already. 2317 * This will create problems to the attached stations (e.g. all 2318 * the frames sent while scanning on other channel will be 2319 * lost) 2320 */ 2321 if (sdata->u.ap.beacon && 2322 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2323 !(req->flags & NL80211_SCAN_FLAG_AP))) 2324 return -EOPNOTSUPP; 2325 break; 2326 case NL80211_IFTYPE_NAN: 2327 default: 2328 return -EOPNOTSUPP; 2329 } 2330 2331 return ieee80211_request_scan(sdata, req); 2332 } 2333 2334 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2335 { 2336 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2337 } 2338 2339 static int 2340 ieee80211_sched_scan_start(struct wiphy *wiphy, 2341 struct net_device *dev, 2342 struct cfg80211_sched_scan_request *req) 2343 { 2344 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2345 2346 if (!sdata->local->ops->sched_scan_start) 2347 return -EOPNOTSUPP; 2348 2349 return ieee80211_request_sched_scan_start(sdata, req); 2350 } 2351 2352 static int 2353 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, 2354 u64 reqid) 2355 { 2356 struct ieee80211_local *local = wiphy_priv(wiphy); 2357 2358 if (!local->ops->sched_scan_stop) 2359 return -EOPNOTSUPP; 2360 2361 return ieee80211_request_sched_scan_stop(local); 2362 } 2363 2364 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2365 struct cfg80211_auth_request *req) 2366 { 2367 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2368 } 2369 2370 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2371 struct cfg80211_assoc_request *req) 2372 { 2373 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2374 } 2375 2376 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2377 struct cfg80211_deauth_request *req) 2378 { 2379 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2380 } 2381 2382 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2383 struct cfg80211_disassoc_request *req) 2384 { 2385 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2386 } 2387 2388 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2389 struct cfg80211_ibss_params *params) 2390 { 2391 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2392 } 2393 2394 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2395 { 2396 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2397 } 2398 2399 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2400 struct ocb_setup *setup) 2401 { 2402 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2403 } 2404 2405 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2406 { 2407 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2408 } 2409 2410 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2411 int rate[NUM_NL80211_BANDS]) 2412 { 2413 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2414 2415 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2416 sizeof(int) * NUM_NL80211_BANDS); 2417 2418 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE); 2419 2420 return 0; 2421 } 2422 2423 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2424 { 2425 struct ieee80211_local *local = wiphy_priv(wiphy); 2426 int err; 2427 2428 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2429 ieee80211_check_fast_xmit_all(local); 2430 2431 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2432 2433 if (err) { 2434 ieee80211_check_fast_xmit_all(local); 2435 return err; 2436 } 2437 } 2438 2439 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2440 (changed & WIPHY_PARAM_DYN_ACK)) { 2441 s16 coverage_class; 2442 2443 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2444 wiphy->coverage_class : -1; 2445 err = drv_set_coverage_class(local, coverage_class); 2446 2447 if (err) 2448 return err; 2449 } 2450 2451 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2452 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2453 2454 if (err) 2455 return err; 2456 } 2457 2458 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2459 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2460 return -EINVAL; 2461 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2462 } 2463 if (changed & WIPHY_PARAM_RETRY_LONG) { 2464 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2465 return -EINVAL; 2466 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2467 } 2468 if (changed & 2469 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2470 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2471 2472 if (changed & (WIPHY_PARAM_TXQ_LIMIT | 2473 WIPHY_PARAM_TXQ_MEMORY_LIMIT | 2474 WIPHY_PARAM_TXQ_QUANTUM)) 2475 ieee80211_txq_set_params(local); 2476 2477 return 0; 2478 } 2479 2480 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2481 struct wireless_dev *wdev, 2482 enum nl80211_tx_power_setting type, int mbm) 2483 { 2484 struct ieee80211_local *local = wiphy_priv(wiphy); 2485 struct ieee80211_sub_if_data *sdata; 2486 enum nl80211_tx_power_setting txp_type = type; 2487 bool update_txp_type = false; 2488 bool has_monitor = false; 2489 2490 if (wdev) { 2491 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2492 2493 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2494 sdata = rtnl_dereference(local->monitor_sdata); 2495 if (!sdata) 2496 return -EOPNOTSUPP; 2497 } 2498 2499 switch (type) { 2500 case NL80211_TX_POWER_AUTOMATIC: 2501 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2502 txp_type = NL80211_TX_POWER_LIMITED; 2503 break; 2504 case NL80211_TX_POWER_LIMITED: 2505 case NL80211_TX_POWER_FIXED: 2506 if (mbm < 0 || (mbm % 100)) 2507 return -EOPNOTSUPP; 2508 sdata->user_power_level = MBM_TO_DBM(mbm); 2509 break; 2510 } 2511 2512 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2513 update_txp_type = true; 2514 sdata->vif.bss_conf.txpower_type = txp_type; 2515 } 2516 2517 ieee80211_recalc_txpower(sdata, update_txp_type); 2518 2519 return 0; 2520 } 2521 2522 switch (type) { 2523 case NL80211_TX_POWER_AUTOMATIC: 2524 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2525 txp_type = NL80211_TX_POWER_LIMITED; 2526 break; 2527 case NL80211_TX_POWER_LIMITED: 2528 case NL80211_TX_POWER_FIXED: 2529 if (mbm < 0 || (mbm % 100)) 2530 return -EOPNOTSUPP; 2531 local->user_power_level = MBM_TO_DBM(mbm); 2532 break; 2533 } 2534 2535 mutex_lock(&local->iflist_mtx); 2536 list_for_each_entry(sdata, &local->interfaces, list) { 2537 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2538 has_monitor = true; 2539 continue; 2540 } 2541 sdata->user_power_level = local->user_power_level; 2542 if (txp_type != sdata->vif.bss_conf.txpower_type) 2543 update_txp_type = true; 2544 sdata->vif.bss_conf.txpower_type = txp_type; 2545 } 2546 list_for_each_entry(sdata, &local->interfaces, list) { 2547 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) 2548 continue; 2549 ieee80211_recalc_txpower(sdata, update_txp_type); 2550 } 2551 mutex_unlock(&local->iflist_mtx); 2552 2553 if (has_monitor) { 2554 sdata = rtnl_dereference(local->monitor_sdata); 2555 if (sdata) { 2556 sdata->user_power_level = local->user_power_level; 2557 if (txp_type != sdata->vif.bss_conf.txpower_type) 2558 update_txp_type = true; 2559 sdata->vif.bss_conf.txpower_type = txp_type; 2560 2561 ieee80211_recalc_txpower(sdata, update_txp_type); 2562 } 2563 } 2564 2565 return 0; 2566 } 2567 2568 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2569 struct wireless_dev *wdev, 2570 int *dbm) 2571 { 2572 struct ieee80211_local *local = wiphy_priv(wiphy); 2573 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2574 2575 if (local->ops->get_txpower) 2576 return drv_get_txpower(local, sdata, dbm); 2577 2578 if (!local->use_chanctx) 2579 *dbm = local->hw.conf.power_level; 2580 else 2581 *dbm = sdata->vif.bss_conf.txpower; 2582 2583 return 0; 2584 } 2585 2586 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2587 const u8 *addr) 2588 { 2589 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2590 2591 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2592 2593 return 0; 2594 } 2595 2596 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2597 { 2598 struct ieee80211_local *local = wiphy_priv(wiphy); 2599 2600 drv_rfkill_poll(local); 2601 } 2602 2603 #ifdef CONFIG_NL80211_TESTMODE 2604 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2605 struct wireless_dev *wdev, 2606 void *data, int len) 2607 { 2608 struct ieee80211_local *local = wiphy_priv(wiphy); 2609 struct ieee80211_vif *vif = NULL; 2610 2611 if (!local->ops->testmode_cmd) 2612 return -EOPNOTSUPP; 2613 2614 if (wdev) { 2615 struct ieee80211_sub_if_data *sdata; 2616 2617 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2618 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2619 vif = &sdata->vif; 2620 } 2621 2622 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2623 } 2624 2625 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2626 struct sk_buff *skb, 2627 struct netlink_callback *cb, 2628 void *data, int len) 2629 { 2630 struct ieee80211_local *local = wiphy_priv(wiphy); 2631 2632 if (!local->ops->testmode_dump) 2633 return -EOPNOTSUPP; 2634 2635 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2636 } 2637 #endif 2638 2639 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2640 enum ieee80211_smps_mode smps_mode) 2641 { 2642 struct sta_info *sta; 2643 enum ieee80211_smps_mode old_req; 2644 2645 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2646 return -EINVAL; 2647 2648 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2649 return 0; 2650 2651 old_req = sdata->u.ap.req_smps; 2652 sdata->u.ap.req_smps = smps_mode; 2653 2654 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2655 if (old_req == smps_mode || 2656 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2657 return 0; 2658 2659 ht_dbg(sdata, 2660 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2661 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2662 2663 mutex_lock(&sdata->local->sta_mtx); 2664 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2665 /* 2666 * Only stations associated to our AP and 2667 * associated VLANs 2668 */ 2669 if (sta->sdata->bss != &sdata->u.ap) 2670 continue; 2671 2672 /* This station doesn't support MIMO - skip it */ 2673 if (sta_info_tx_streams(sta) == 1) 2674 continue; 2675 2676 /* 2677 * Don't wake up a STA just to send the action frame 2678 * unless we are getting more restrictive. 2679 */ 2680 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2681 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2682 smps_mode)) { 2683 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2684 sta->sta.addr); 2685 continue; 2686 } 2687 2688 /* 2689 * If the STA is not authorized, wait until it gets 2690 * authorized and the action frame will be sent then. 2691 */ 2692 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2693 continue; 2694 2695 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2696 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2697 sdata->vif.bss_conf.bssid); 2698 } 2699 mutex_unlock(&sdata->local->sta_mtx); 2700 2701 sdata->smps_mode = smps_mode; 2702 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2703 2704 return 0; 2705 } 2706 2707 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2708 enum ieee80211_smps_mode smps_mode) 2709 { 2710 const u8 *ap; 2711 enum ieee80211_smps_mode old_req; 2712 int err; 2713 struct sta_info *sta; 2714 bool tdls_peer_found = false; 2715 2716 lockdep_assert_held(&sdata->wdev.mtx); 2717 2718 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2719 return -EINVAL; 2720 2721 old_req = sdata->u.mgd.req_smps; 2722 sdata->u.mgd.req_smps = smps_mode; 2723 2724 if (old_req == smps_mode && 2725 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2726 return 0; 2727 2728 /* 2729 * If not associated, or current association is not an HT 2730 * association, there's no need to do anything, just store 2731 * the new value until we associate. 2732 */ 2733 if (!sdata->u.mgd.associated || 2734 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2735 return 0; 2736 2737 ap = sdata->u.mgd.associated->bssid; 2738 2739 rcu_read_lock(); 2740 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2741 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2742 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2743 continue; 2744 2745 tdls_peer_found = true; 2746 break; 2747 } 2748 rcu_read_unlock(); 2749 2750 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2751 if (tdls_peer_found || !sdata->u.mgd.powersave) 2752 smps_mode = IEEE80211_SMPS_OFF; 2753 else 2754 smps_mode = IEEE80211_SMPS_DYNAMIC; 2755 } 2756 2757 /* send SM PS frame to AP */ 2758 err = ieee80211_send_smps_action(sdata, smps_mode, 2759 ap, ap); 2760 if (err) 2761 sdata->u.mgd.req_smps = old_req; 2762 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2763 ieee80211_teardown_tdls_peers(sdata); 2764 2765 return err; 2766 } 2767 2768 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2769 bool enabled, int timeout) 2770 { 2771 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2772 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2773 2774 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2775 return -EOPNOTSUPP; 2776 2777 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2778 return -EOPNOTSUPP; 2779 2780 if (enabled == sdata->u.mgd.powersave && 2781 timeout == local->dynamic_ps_forced_timeout) 2782 return 0; 2783 2784 sdata->u.mgd.powersave = enabled; 2785 local->dynamic_ps_forced_timeout = timeout; 2786 2787 /* no change, but if automatic follow powersave */ 2788 sdata_lock(sdata); 2789 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2790 sdata_unlock(sdata); 2791 2792 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2793 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2794 2795 ieee80211_recalc_ps(local); 2796 ieee80211_recalc_ps_vif(sdata); 2797 ieee80211_check_fast_rx_iface(sdata); 2798 2799 return 0; 2800 } 2801 2802 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2803 struct net_device *dev, 2804 s32 rssi_thold, u32 rssi_hyst) 2805 { 2806 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2807 struct ieee80211_vif *vif = &sdata->vif; 2808 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2809 2810 if (rssi_thold == bss_conf->cqm_rssi_thold && 2811 rssi_hyst == bss_conf->cqm_rssi_hyst) 2812 return 0; 2813 2814 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2815 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2816 return -EOPNOTSUPP; 2817 2818 bss_conf->cqm_rssi_thold = rssi_thold; 2819 bss_conf->cqm_rssi_hyst = rssi_hyst; 2820 bss_conf->cqm_rssi_low = 0; 2821 bss_conf->cqm_rssi_high = 0; 2822 sdata->u.mgd.last_cqm_event_signal = 0; 2823 2824 /* tell the driver upon association, unless already associated */ 2825 if (sdata->u.mgd.associated && 2826 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2827 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2828 2829 return 0; 2830 } 2831 2832 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, 2833 struct net_device *dev, 2834 s32 rssi_low, s32 rssi_high) 2835 { 2836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2837 struct ieee80211_vif *vif = &sdata->vif; 2838 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2839 2840 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) 2841 return -EOPNOTSUPP; 2842 2843 bss_conf->cqm_rssi_low = rssi_low; 2844 bss_conf->cqm_rssi_high = rssi_high; 2845 bss_conf->cqm_rssi_thold = 0; 2846 bss_conf->cqm_rssi_hyst = 0; 2847 sdata->u.mgd.last_cqm_event_signal = 0; 2848 2849 /* tell the driver upon association, unless already associated */ 2850 if (sdata->u.mgd.associated && 2851 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2852 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2853 2854 return 0; 2855 } 2856 2857 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2858 struct net_device *dev, 2859 const u8 *addr, 2860 const struct cfg80211_bitrate_mask *mask) 2861 { 2862 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2863 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2864 int i, ret; 2865 2866 if (!ieee80211_sdata_running(sdata)) 2867 return -ENETDOWN; 2868 2869 /* 2870 * If active validate the setting and reject it if it doesn't leave 2871 * at least one basic rate usable, since we really have to be able 2872 * to send something, and if we're an AP we have to be able to do 2873 * so at a basic rate so that all clients can receive it. 2874 */ 2875 if (rcu_access_pointer(sdata->vif.chanctx_conf) && 2876 sdata->vif.bss_conf.chandef.chan) { 2877 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 2878 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band; 2879 2880 if (!(mask->control[band].legacy & basic_rates)) 2881 return -EINVAL; 2882 } 2883 2884 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2885 ret = drv_set_bitrate_mask(local, sdata, mask); 2886 if (ret) 2887 return ret; 2888 } 2889 2890 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2891 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2892 int j; 2893 2894 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2895 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2896 sizeof(mask->control[i].ht_mcs)); 2897 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2898 mask->control[i].vht_mcs, 2899 sizeof(mask->control[i].vht_mcs)); 2900 2901 sdata->rc_has_mcs_mask[i] = false; 2902 sdata->rc_has_vht_mcs_mask[i] = false; 2903 if (!sband) 2904 continue; 2905 2906 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2907 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2908 sdata->rc_has_mcs_mask[i] = true; 2909 break; 2910 } 2911 } 2912 2913 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2914 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2915 sdata->rc_has_vht_mcs_mask[i] = true; 2916 break; 2917 } 2918 } 2919 } 2920 2921 return 0; 2922 } 2923 2924 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2925 struct net_device *dev, 2926 struct cfg80211_chan_def *chandef, 2927 u32 cac_time_ms) 2928 { 2929 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2930 struct ieee80211_local *local = sdata->local; 2931 int err; 2932 2933 mutex_lock(&local->mtx); 2934 if (!list_empty(&local->roc_list) || local->scanning) { 2935 err = -EBUSY; 2936 goto out_unlock; 2937 } 2938 2939 /* whatever, but channel contexts should not complain about that one */ 2940 sdata->smps_mode = IEEE80211_SMPS_OFF; 2941 sdata->needed_rx_chains = local->rx_chains; 2942 2943 err = ieee80211_vif_use_channel(sdata, chandef, 2944 IEEE80211_CHANCTX_SHARED); 2945 if (err) 2946 goto out_unlock; 2947 2948 ieee80211_queue_delayed_work(&sdata->local->hw, 2949 &sdata->dfs_cac_timer_work, 2950 msecs_to_jiffies(cac_time_ms)); 2951 2952 out_unlock: 2953 mutex_unlock(&local->mtx); 2954 return err; 2955 } 2956 2957 static void ieee80211_end_cac(struct wiphy *wiphy, 2958 struct net_device *dev) 2959 { 2960 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2961 struct ieee80211_local *local = sdata->local; 2962 2963 mutex_lock(&local->mtx); 2964 list_for_each_entry(sdata, &local->interfaces, list) { 2965 /* it might be waiting for the local->mtx, but then 2966 * by the time it gets it, sdata->wdev.cac_started 2967 * will no longer be true 2968 */ 2969 cancel_delayed_work(&sdata->dfs_cac_timer_work); 2970 2971 if (sdata->wdev.cac_started) { 2972 ieee80211_vif_release_channel(sdata); 2973 sdata->wdev.cac_started = false; 2974 } 2975 } 2976 mutex_unlock(&local->mtx); 2977 } 2978 2979 static struct cfg80211_beacon_data * 2980 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2981 { 2982 struct cfg80211_beacon_data *new_beacon; 2983 u8 *pos; 2984 int len; 2985 2986 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2987 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2988 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len; 2989 2990 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2991 if (!new_beacon) 2992 return NULL; 2993 2994 pos = (u8 *)(new_beacon + 1); 2995 if (beacon->head_len) { 2996 new_beacon->head_len = beacon->head_len; 2997 new_beacon->head = pos; 2998 memcpy(pos, beacon->head, beacon->head_len); 2999 pos += beacon->head_len; 3000 } 3001 if (beacon->tail_len) { 3002 new_beacon->tail_len = beacon->tail_len; 3003 new_beacon->tail = pos; 3004 memcpy(pos, beacon->tail, beacon->tail_len); 3005 pos += beacon->tail_len; 3006 } 3007 if (beacon->beacon_ies_len) { 3008 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 3009 new_beacon->beacon_ies = pos; 3010 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 3011 pos += beacon->beacon_ies_len; 3012 } 3013 if (beacon->proberesp_ies_len) { 3014 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 3015 new_beacon->proberesp_ies = pos; 3016 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 3017 pos += beacon->proberesp_ies_len; 3018 } 3019 if (beacon->assocresp_ies_len) { 3020 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 3021 new_beacon->assocresp_ies = pos; 3022 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 3023 pos += beacon->assocresp_ies_len; 3024 } 3025 if (beacon->probe_resp_len) { 3026 new_beacon->probe_resp_len = beacon->probe_resp_len; 3027 new_beacon->probe_resp = pos; 3028 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 3029 pos += beacon->probe_resp_len; 3030 } 3031 3032 /* might copy -1, meaning no changes requested */ 3033 new_beacon->ftm_responder = beacon->ftm_responder; 3034 if (beacon->lci) { 3035 new_beacon->lci_len = beacon->lci_len; 3036 new_beacon->lci = pos; 3037 memcpy(pos, beacon->lci, beacon->lci_len); 3038 pos += beacon->lci_len; 3039 } 3040 if (beacon->civicloc) { 3041 new_beacon->civicloc_len = beacon->civicloc_len; 3042 new_beacon->civicloc = pos; 3043 memcpy(pos, beacon->civicloc, beacon->civicloc_len); 3044 pos += beacon->civicloc_len; 3045 } 3046 3047 return new_beacon; 3048 } 3049 3050 void ieee80211_csa_finish(struct ieee80211_vif *vif) 3051 { 3052 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3053 3054 ieee80211_queue_work(&sdata->local->hw, 3055 &sdata->csa_finalize_work); 3056 } 3057 EXPORT_SYMBOL(ieee80211_csa_finish); 3058 3059 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 3060 u32 *changed) 3061 { 3062 int err; 3063 3064 switch (sdata->vif.type) { 3065 case NL80211_IFTYPE_AP: 3066 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 3067 NULL); 3068 kfree(sdata->u.ap.next_beacon); 3069 sdata->u.ap.next_beacon = NULL; 3070 3071 if (err < 0) 3072 return err; 3073 *changed |= err; 3074 break; 3075 case NL80211_IFTYPE_ADHOC: 3076 err = ieee80211_ibss_finish_csa(sdata); 3077 if (err < 0) 3078 return err; 3079 *changed |= err; 3080 break; 3081 #ifdef CONFIG_MAC80211_MESH 3082 case NL80211_IFTYPE_MESH_POINT: 3083 err = ieee80211_mesh_finish_csa(sdata); 3084 if (err < 0) 3085 return err; 3086 *changed |= err; 3087 break; 3088 #endif 3089 default: 3090 WARN_ON(1); 3091 return -EINVAL; 3092 } 3093 3094 return 0; 3095 } 3096 3097 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3098 { 3099 struct ieee80211_local *local = sdata->local; 3100 u32 changed = 0; 3101 int err; 3102 3103 sdata_assert_lock(sdata); 3104 lockdep_assert_held(&local->mtx); 3105 lockdep_assert_held(&local->chanctx_mtx); 3106 3107 /* 3108 * using reservation isn't immediate as it may be deferred until later 3109 * with multi-vif. once reservation is complete it will re-schedule the 3110 * work with no reserved_chanctx so verify chandef to check if it 3111 * completed successfully 3112 */ 3113 3114 if (sdata->reserved_chanctx) { 3115 /* 3116 * with multi-vif csa driver may call ieee80211_csa_finish() 3117 * many times while waiting for other interfaces to use their 3118 * reservations 3119 */ 3120 if (sdata->reserved_ready) 3121 return 0; 3122 3123 return ieee80211_vif_use_reserved_context(sdata); 3124 } 3125 3126 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 3127 &sdata->csa_chandef)) 3128 return -EINVAL; 3129 3130 sdata->vif.csa_active = false; 3131 3132 err = ieee80211_set_after_csa_beacon(sdata, &changed); 3133 if (err) 3134 return err; 3135 3136 ieee80211_bss_info_change_notify(sdata, changed); 3137 3138 if (sdata->csa_block_tx) { 3139 ieee80211_wake_vif_queues(local, sdata, 3140 IEEE80211_QUEUE_STOP_REASON_CSA); 3141 sdata->csa_block_tx = false; 3142 } 3143 3144 err = drv_post_channel_switch(sdata); 3145 if (err) 3146 return err; 3147 3148 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3149 3150 return 0; 3151 } 3152 3153 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3154 { 3155 if (__ieee80211_csa_finalize(sdata)) { 3156 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3157 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3158 GFP_KERNEL); 3159 } 3160 } 3161 3162 void ieee80211_csa_finalize_work(struct work_struct *work) 3163 { 3164 struct ieee80211_sub_if_data *sdata = 3165 container_of(work, struct ieee80211_sub_if_data, 3166 csa_finalize_work); 3167 struct ieee80211_local *local = sdata->local; 3168 3169 sdata_lock(sdata); 3170 mutex_lock(&local->mtx); 3171 mutex_lock(&local->chanctx_mtx); 3172 3173 /* AP might have been stopped while waiting for the lock. */ 3174 if (!sdata->vif.csa_active) 3175 goto unlock; 3176 3177 if (!ieee80211_sdata_running(sdata)) 3178 goto unlock; 3179 3180 ieee80211_csa_finalize(sdata); 3181 3182 unlock: 3183 mutex_unlock(&local->chanctx_mtx); 3184 mutex_unlock(&local->mtx); 3185 sdata_unlock(sdata); 3186 } 3187 3188 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3189 struct cfg80211_csa_settings *params, 3190 u32 *changed) 3191 { 3192 struct ieee80211_csa_settings csa = {}; 3193 int err; 3194 3195 switch (sdata->vif.type) { 3196 case NL80211_IFTYPE_AP: 3197 sdata->u.ap.next_beacon = 3198 cfg80211_beacon_dup(¶ms->beacon_after); 3199 if (!sdata->u.ap.next_beacon) 3200 return -ENOMEM; 3201 3202 /* 3203 * With a count of 0, we don't have to wait for any 3204 * TBTT before switching, so complete the CSA 3205 * immediately. In theory, with a count == 1 we 3206 * should delay the switch until just before the next 3207 * TBTT, but that would complicate things so we switch 3208 * immediately too. If we would delay the switch 3209 * until the next TBTT, we would have to set the probe 3210 * response here. 3211 * 3212 * TODO: A channel switch with count <= 1 without 3213 * sending a CSA action frame is kind of useless, 3214 * because the clients won't know we're changing 3215 * channels. The action frame must be implemented 3216 * either here or in the userspace. 3217 */ 3218 if (params->count <= 1) 3219 break; 3220 3221 if ((params->n_counter_offsets_beacon > 3222 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3223 (params->n_counter_offsets_presp > 3224 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3225 return -EINVAL; 3226 3227 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3228 csa.counter_offsets_presp = params->counter_offsets_presp; 3229 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3230 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3231 csa.count = params->count; 3232 3233 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3234 if (err < 0) { 3235 kfree(sdata->u.ap.next_beacon); 3236 return err; 3237 } 3238 *changed |= err; 3239 3240 break; 3241 case NL80211_IFTYPE_ADHOC: 3242 if (!sdata->vif.bss_conf.ibss_joined) 3243 return -EINVAL; 3244 3245 if (params->chandef.width != sdata->u.ibss.chandef.width) 3246 return -EINVAL; 3247 3248 switch (params->chandef.width) { 3249 case NL80211_CHAN_WIDTH_40: 3250 if (cfg80211_get_chandef_type(¶ms->chandef) != 3251 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3252 return -EINVAL; 3253 case NL80211_CHAN_WIDTH_5: 3254 case NL80211_CHAN_WIDTH_10: 3255 case NL80211_CHAN_WIDTH_20_NOHT: 3256 case NL80211_CHAN_WIDTH_20: 3257 break; 3258 default: 3259 return -EINVAL; 3260 } 3261 3262 /* changes into another band are not supported */ 3263 if (sdata->u.ibss.chandef.chan->band != 3264 params->chandef.chan->band) 3265 return -EINVAL; 3266 3267 /* see comments in the NL80211_IFTYPE_AP block */ 3268 if (params->count > 1) { 3269 err = ieee80211_ibss_csa_beacon(sdata, params); 3270 if (err < 0) 3271 return err; 3272 *changed |= err; 3273 } 3274 3275 ieee80211_send_action_csa(sdata, params); 3276 3277 break; 3278 #ifdef CONFIG_MAC80211_MESH 3279 case NL80211_IFTYPE_MESH_POINT: { 3280 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3281 3282 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3283 return -EINVAL; 3284 3285 /* changes into another band are not supported */ 3286 if (sdata->vif.bss_conf.chandef.chan->band != 3287 params->chandef.chan->band) 3288 return -EINVAL; 3289 3290 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3291 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3292 if (!ifmsh->pre_value) 3293 ifmsh->pre_value = 1; 3294 else 3295 ifmsh->pre_value++; 3296 } 3297 3298 /* see comments in the NL80211_IFTYPE_AP block */ 3299 if (params->count > 1) { 3300 err = ieee80211_mesh_csa_beacon(sdata, params); 3301 if (err < 0) { 3302 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3303 return err; 3304 } 3305 *changed |= err; 3306 } 3307 3308 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3309 ieee80211_send_action_csa(sdata, params); 3310 3311 break; 3312 } 3313 #endif 3314 default: 3315 return -EOPNOTSUPP; 3316 } 3317 3318 return 0; 3319 } 3320 3321 static int 3322 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3323 struct cfg80211_csa_settings *params) 3324 { 3325 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3326 struct ieee80211_local *local = sdata->local; 3327 struct ieee80211_channel_switch ch_switch; 3328 struct ieee80211_chanctx_conf *conf; 3329 struct ieee80211_chanctx *chanctx; 3330 u32 changed = 0; 3331 int err; 3332 3333 sdata_assert_lock(sdata); 3334 lockdep_assert_held(&local->mtx); 3335 3336 if (!list_empty(&local->roc_list) || local->scanning) 3337 return -EBUSY; 3338 3339 if (sdata->wdev.cac_started) 3340 return -EBUSY; 3341 3342 if (cfg80211_chandef_identical(¶ms->chandef, 3343 &sdata->vif.bss_conf.chandef)) 3344 return -EINVAL; 3345 3346 /* don't allow another channel switch if one is already active. */ 3347 if (sdata->vif.csa_active) 3348 return -EBUSY; 3349 3350 mutex_lock(&local->chanctx_mtx); 3351 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3352 lockdep_is_held(&local->chanctx_mtx)); 3353 if (!conf) { 3354 err = -EBUSY; 3355 goto out; 3356 } 3357 3358 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3359 3360 ch_switch.timestamp = 0; 3361 ch_switch.device_timestamp = 0; 3362 ch_switch.block_tx = params->block_tx; 3363 ch_switch.chandef = params->chandef; 3364 ch_switch.count = params->count; 3365 3366 err = drv_pre_channel_switch(sdata, &ch_switch); 3367 if (err) 3368 goto out; 3369 3370 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3371 chanctx->mode, 3372 params->radar_required); 3373 if (err) 3374 goto out; 3375 3376 /* if reservation is invalid then this will fail */ 3377 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3378 if (err) { 3379 ieee80211_vif_unreserve_chanctx(sdata); 3380 goto out; 3381 } 3382 3383 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3384 if (err) { 3385 ieee80211_vif_unreserve_chanctx(sdata); 3386 goto out; 3387 } 3388 3389 sdata->csa_chandef = params->chandef; 3390 sdata->csa_block_tx = params->block_tx; 3391 sdata->vif.csa_active = true; 3392 3393 if (sdata->csa_block_tx) 3394 ieee80211_stop_vif_queues(local, sdata, 3395 IEEE80211_QUEUE_STOP_REASON_CSA); 3396 3397 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3398 params->count); 3399 3400 if (changed) { 3401 ieee80211_bss_info_change_notify(sdata, changed); 3402 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3403 } else { 3404 /* if the beacon didn't change, we can finalize immediately */ 3405 ieee80211_csa_finalize(sdata); 3406 } 3407 3408 out: 3409 mutex_unlock(&local->chanctx_mtx); 3410 return err; 3411 } 3412 3413 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3414 struct cfg80211_csa_settings *params) 3415 { 3416 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3417 struct ieee80211_local *local = sdata->local; 3418 int err; 3419 3420 mutex_lock(&local->mtx); 3421 err = __ieee80211_channel_switch(wiphy, dev, params); 3422 mutex_unlock(&local->mtx); 3423 3424 return err; 3425 } 3426 3427 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3428 { 3429 lockdep_assert_held(&local->mtx); 3430 3431 local->roc_cookie_counter++; 3432 3433 /* wow, you wrapped 64 bits ... more likely a bug */ 3434 if (WARN_ON(local->roc_cookie_counter == 0)) 3435 local->roc_cookie_counter++; 3436 3437 return local->roc_cookie_counter; 3438 } 3439 3440 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3441 u64 *cookie, gfp_t gfp) 3442 { 3443 unsigned long spin_flags; 3444 struct sk_buff *ack_skb; 3445 int id; 3446 3447 ack_skb = skb_copy(skb, gfp); 3448 if (!ack_skb) 3449 return -ENOMEM; 3450 3451 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3452 id = idr_alloc(&local->ack_status_frames, ack_skb, 3453 1, 0x40, GFP_ATOMIC); 3454 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3455 3456 if (id < 0) { 3457 kfree_skb(ack_skb); 3458 return -ENOMEM; 3459 } 3460 3461 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3462 3463 *cookie = ieee80211_mgmt_tx_cookie(local); 3464 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3465 3466 return 0; 3467 } 3468 3469 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3470 struct wireless_dev *wdev, 3471 u16 frame_type, bool reg) 3472 { 3473 struct ieee80211_local *local = wiphy_priv(wiphy); 3474 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3475 3476 switch (frame_type) { 3477 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3478 if (reg) { 3479 local->probe_req_reg++; 3480 sdata->vif.probe_req_reg++; 3481 } else { 3482 if (local->probe_req_reg) 3483 local->probe_req_reg--; 3484 3485 if (sdata->vif.probe_req_reg) 3486 sdata->vif.probe_req_reg--; 3487 } 3488 3489 if (!local->open_count) 3490 break; 3491 3492 if (sdata->vif.probe_req_reg == 1) 3493 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3494 FIF_PROBE_REQ); 3495 else if (sdata->vif.probe_req_reg == 0) 3496 drv_config_iface_filter(local, sdata, 0, 3497 FIF_PROBE_REQ); 3498 3499 ieee80211_configure_filter(local); 3500 break; 3501 default: 3502 break; 3503 } 3504 } 3505 3506 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3507 { 3508 struct ieee80211_local *local = wiphy_priv(wiphy); 3509 3510 if (local->started) 3511 return -EOPNOTSUPP; 3512 3513 return drv_set_antenna(local, tx_ant, rx_ant); 3514 } 3515 3516 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3517 { 3518 struct ieee80211_local *local = wiphy_priv(wiphy); 3519 3520 return drv_get_antenna(local, tx_ant, rx_ant); 3521 } 3522 3523 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3524 struct net_device *dev, 3525 struct cfg80211_gtk_rekey_data *data) 3526 { 3527 struct ieee80211_local *local = wiphy_priv(wiphy); 3528 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3529 3530 if (!local->ops->set_rekey_data) 3531 return -EOPNOTSUPP; 3532 3533 drv_set_rekey_data(local, sdata, data); 3534 3535 return 0; 3536 } 3537 3538 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3539 const u8 *peer, u64 *cookie) 3540 { 3541 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3542 struct ieee80211_local *local = sdata->local; 3543 struct ieee80211_qos_hdr *nullfunc; 3544 struct sk_buff *skb; 3545 int size = sizeof(*nullfunc); 3546 __le16 fc; 3547 bool qos; 3548 struct ieee80211_tx_info *info; 3549 struct sta_info *sta; 3550 struct ieee80211_chanctx_conf *chanctx_conf; 3551 enum nl80211_band band; 3552 int ret; 3553 3554 /* the lock is needed to assign the cookie later */ 3555 mutex_lock(&local->mtx); 3556 3557 rcu_read_lock(); 3558 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3559 if (WARN_ON(!chanctx_conf)) { 3560 ret = -EINVAL; 3561 goto unlock; 3562 } 3563 band = chanctx_conf->def.chan->band; 3564 sta = sta_info_get_bss(sdata, peer); 3565 if (sta) { 3566 qos = sta->sta.wme; 3567 } else { 3568 ret = -ENOLINK; 3569 goto unlock; 3570 } 3571 3572 if (qos) { 3573 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3574 IEEE80211_STYPE_QOS_NULLFUNC | 3575 IEEE80211_FCTL_FROMDS); 3576 } else { 3577 size -= 2; 3578 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3579 IEEE80211_STYPE_NULLFUNC | 3580 IEEE80211_FCTL_FROMDS); 3581 } 3582 3583 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3584 if (!skb) { 3585 ret = -ENOMEM; 3586 goto unlock; 3587 } 3588 3589 skb->dev = dev; 3590 3591 skb_reserve(skb, local->hw.extra_tx_headroom); 3592 3593 nullfunc = skb_put(skb, size); 3594 nullfunc->frame_control = fc; 3595 nullfunc->duration_id = 0; 3596 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3597 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3598 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3599 nullfunc->seq_ctrl = 0; 3600 3601 info = IEEE80211_SKB_CB(skb); 3602 3603 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3604 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3605 info->band = band; 3606 3607 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3608 skb->priority = 7; 3609 if (qos) 3610 nullfunc->qos_ctrl = cpu_to_le16(7); 3611 3612 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3613 if (ret) { 3614 kfree_skb(skb); 3615 goto unlock; 3616 } 3617 3618 local_bh_disable(); 3619 ieee80211_xmit(sdata, sta, skb, 0); 3620 local_bh_enable(); 3621 3622 ret = 0; 3623 unlock: 3624 rcu_read_unlock(); 3625 mutex_unlock(&local->mtx); 3626 3627 return ret; 3628 } 3629 3630 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3631 struct wireless_dev *wdev, 3632 struct cfg80211_chan_def *chandef) 3633 { 3634 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3635 struct ieee80211_local *local = wiphy_priv(wiphy); 3636 struct ieee80211_chanctx_conf *chanctx_conf; 3637 int ret = -ENODATA; 3638 3639 rcu_read_lock(); 3640 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3641 if (chanctx_conf) { 3642 *chandef = sdata->vif.bss_conf.chandef; 3643 ret = 0; 3644 } else if (local->open_count > 0 && 3645 local->open_count == local->monitors && 3646 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3647 if (local->use_chanctx) 3648 *chandef = local->monitor_chandef; 3649 else 3650 *chandef = local->_oper_chandef; 3651 ret = 0; 3652 } 3653 rcu_read_unlock(); 3654 3655 return ret; 3656 } 3657 3658 #ifdef CONFIG_PM 3659 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3660 { 3661 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3662 } 3663 #endif 3664 3665 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3666 struct net_device *dev, 3667 struct cfg80211_qos_map *qos_map) 3668 { 3669 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3670 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3671 3672 if (qos_map) { 3673 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3674 if (!new_qos_map) 3675 return -ENOMEM; 3676 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3677 } else { 3678 /* A NULL qos_map was passed to disable QoS mapping */ 3679 new_qos_map = NULL; 3680 } 3681 3682 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3683 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3684 if (old_qos_map) 3685 kfree_rcu(old_qos_map, rcu_head); 3686 3687 return 0; 3688 } 3689 3690 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3691 struct net_device *dev, 3692 struct cfg80211_chan_def *chandef) 3693 { 3694 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3695 int ret; 3696 u32 changed = 0; 3697 3698 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3699 if (ret == 0) 3700 ieee80211_bss_info_change_notify(sdata, changed); 3701 3702 return ret; 3703 } 3704 3705 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3706 u8 tsid, const u8 *peer, u8 up, 3707 u16 admitted_time) 3708 { 3709 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3710 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3711 int ac = ieee802_1d_to_ac[up]; 3712 3713 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3714 return -EOPNOTSUPP; 3715 3716 if (!(sdata->wmm_acm & BIT(up))) 3717 return -EINVAL; 3718 3719 if (ifmgd->tx_tspec[ac].admitted_time) 3720 return -EBUSY; 3721 3722 if (admitted_time) { 3723 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3724 ifmgd->tx_tspec[ac].tsid = tsid; 3725 ifmgd->tx_tspec[ac].up = up; 3726 } 3727 3728 return 0; 3729 } 3730 3731 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3732 u8 tsid, const u8 *peer) 3733 { 3734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3735 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3736 struct ieee80211_local *local = wiphy_priv(wiphy); 3737 int ac; 3738 3739 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3740 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3741 3742 /* skip unused entries */ 3743 if (!tx_tspec->admitted_time) 3744 continue; 3745 3746 if (tx_tspec->tsid != tsid) 3747 continue; 3748 3749 /* due to this new packets will be reassigned to non-ACM ACs */ 3750 tx_tspec->up = -1; 3751 3752 /* Make sure that all packets have been sent to avoid to 3753 * restore the QoS params on packets that are still on the 3754 * queues. 3755 */ 3756 synchronize_net(); 3757 ieee80211_flush_queues(local, sdata, false); 3758 3759 /* restore the normal QoS parameters 3760 * (unconditionally to avoid races) 3761 */ 3762 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3763 tx_tspec->downgraded = false; 3764 ieee80211_sta_handle_tspec_ac_params(sdata); 3765 3766 /* finally clear all the data */ 3767 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3768 3769 return 0; 3770 } 3771 3772 return -ENOENT; 3773 } 3774 3775 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, 3776 u8 inst_id, 3777 enum nl80211_nan_func_term_reason reason, 3778 gfp_t gfp) 3779 { 3780 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3781 struct cfg80211_nan_func *func; 3782 u64 cookie; 3783 3784 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 3785 return; 3786 3787 spin_lock_bh(&sdata->u.nan.func_lock); 3788 3789 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id); 3790 if (WARN_ON(!func)) { 3791 spin_unlock_bh(&sdata->u.nan.func_lock); 3792 return; 3793 } 3794 3795 cookie = func->cookie; 3796 idr_remove(&sdata->u.nan.function_inst_ids, inst_id); 3797 3798 spin_unlock_bh(&sdata->u.nan.func_lock); 3799 3800 cfg80211_free_nan_func(func); 3801 3802 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id, 3803 reason, cookie, gfp); 3804 } 3805 EXPORT_SYMBOL(ieee80211_nan_func_terminated); 3806 3807 void ieee80211_nan_func_match(struct ieee80211_vif *vif, 3808 struct cfg80211_nan_match_params *match, 3809 gfp_t gfp) 3810 { 3811 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3812 struct cfg80211_nan_func *func; 3813 3814 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 3815 return; 3816 3817 spin_lock_bh(&sdata->u.nan.func_lock); 3818 3819 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id); 3820 if (WARN_ON(!func)) { 3821 spin_unlock_bh(&sdata->u.nan.func_lock); 3822 return; 3823 } 3824 match->cookie = func->cookie; 3825 3826 spin_unlock_bh(&sdata->u.nan.func_lock); 3827 3828 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp); 3829 } 3830 EXPORT_SYMBOL(ieee80211_nan_func_match); 3831 3832 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy, 3833 struct net_device *dev, 3834 const bool enabled) 3835 { 3836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3837 3838 sdata->u.ap.multicast_to_unicast = enabled; 3839 3840 return 0; 3841 } 3842 3843 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 3844 struct txq_info *txqi) 3845 { 3846 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) { 3847 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES); 3848 txqstats->backlog_bytes = txqi->tin.backlog_bytes; 3849 } 3850 3851 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) { 3852 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS); 3853 txqstats->backlog_packets = txqi->tin.backlog_packets; 3854 } 3855 3856 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) { 3857 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS); 3858 txqstats->flows = txqi->tin.flows; 3859 } 3860 3861 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) { 3862 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS); 3863 txqstats->drops = txqi->cstats.drop_count; 3864 } 3865 3866 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) { 3867 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS); 3868 txqstats->ecn_marks = txqi->cstats.ecn_mark; 3869 } 3870 3871 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) { 3872 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT); 3873 txqstats->overlimit = txqi->tin.overlimit; 3874 } 3875 3876 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) { 3877 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS); 3878 txqstats->collisions = txqi->tin.collisions; 3879 } 3880 3881 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) { 3882 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES); 3883 txqstats->tx_bytes = txqi->tin.tx_bytes; 3884 } 3885 3886 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) { 3887 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS); 3888 txqstats->tx_packets = txqi->tin.tx_packets; 3889 } 3890 } 3891 3892 static int ieee80211_get_txq_stats(struct wiphy *wiphy, 3893 struct wireless_dev *wdev, 3894 struct cfg80211_txq_stats *txqstats) 3895 { 3896 struct ieee80211_local *local = wiphy_priv(wiphy); 3897 struct ieee80211_sub_if_data *sdata; 3898 int ret = 0; 3899 3900 if (!local->ops->wake_tx_queue) 3901 return 1; 3902 3903 spin_lock_bh(&local->fq.lock); 3904 rcu_read_lock(); 3905 3906 if (wdev) { 3907 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3908 if (!sdata->vif.txq) { 3909 ret = 1; 3910 goto out; 3911 } 3912 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq)); 3913 } else { 3914 /* phy stats */ 3915 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) | 3916 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) | 3917 BIT(NL80211_TXQ_STATS_OVERLIMIT) | 3918 BIT(NL80211_TXQ_STATS_OVERMEMORY) | 3919 BIT(NL80211_TXQ_STATS_COLLISIONS) | 3920 BIT(NL80211_TXQ_STATS_MAX_FLOWS); 3921 txqstats->backlog_packets = local->fq.backlog; 3922 txqstats->backlog_bytes = local->fq.memory_usage; 3923 txqstats->overlimit = local->fq.overlimit; 3924 txqstats->overmemory = local->fq.overmemory; 3925 txqstats->collisions = local->fq.collisions; 3926 txqstats->max_flows = local->fq.flows_cnt; 3927 } 3928 3929 out: 3930 rcu_read_unlock(); 3931 spin_unlock_bh(&local->fq.lock); 3932 3933 return ret; 3934 } 3935 3936 static int 3937 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy, 3938 struct net_device *dev, 3939 struct cfg80211_ftm_responder_stats *ftm_stats) 3940 { 3941 struct ieee80211_local *local = wiphy_priv(wiphy); 3942 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3943 3944 return drv_get_ftm_responder_stats(local, sdata, ftm_stats); 3945 } 3946 3947 static int 3948 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 3949 struct cfg80211_pmsr_request *request) 3950 { 3951 struct ieee80211_local *local = wiphy_priv(wiphy); 3952 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 3953 3954 return drv_start_pmsr(local, sdata, request); 3955 } 3956 3957 static void 3958 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 3959 struct cfg80211_pmsr_request *request) 3960 { 3961 struct ieee80211_local *local = wiphy_priv(wiphy); 3962 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 3963 3964 return drv_abort_pmsr(local, sdata, request); 3965 } 3966 3967 const struct cfg80211_ops mac80211_config_ops = { 3968 .add_virtual_intf = ieee80211_add_iface, 3969 .del_virtual_intf = ieee80211_del_iface, 3970 .change_virtual_intf = ieee80211_change_iface, 3971 .start_p2p_device = ieee80211_start_p2p_device, 3972 .stop_p2p_device = ieee80211_stop_p2p_device, 3973 .add_key = ieee80211_add_key, 3974 .del_key = ieee80211_del_key, 3975 .get_key = ieee80211_get_key, 3976 .set_default_key = ieee80211_config_default_key, 3977 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3978 .start_ap = ieee80211_start_ap, 3979 .change_beacon = ieee80211_change_beacon, 3980 .stop_ap = ieee80211_stop_ap, 3981 .add_station = ieee80211_add_station, 3982 .del_station = ieee80211_del_station, 3983 .change_station = ieee80211_change_station, 3984 .get_station = ieee80211_get_station, 3985 .dump_station = ieee80211_dump_station, 3986 .dump_survey = ieee80211_dump_survey, 3987 #ifdef CONFIG_MAC80211_MESH 3988 .add_mpath = ieee80211_add_mpath, 3989 .del_mpath = ieee80211_del_mpath, 3990 .change_mpath = ieee80211_change_mpath, 3991 .get_mpath = ieee80211_get_mpath, 3992 .dump_mpath = ieee80211_dump_mpath, 3993 .get_mpp = ieee80211_get_mpp, 3994 .dump_mpp = ieee80211_dump_mpp, 3995 .update_mesh_config = ieee80211_update_mesh_config, 3996 .get_mesh_config = ieee80211_get_mesh_config, 3997 .join_mesh = ieee80211_join_mesh, 3998 .leave_mesh = ieee80211_leave_mesh, 3999 #endif 4000 .join_ocb = ieee80211_join_ocb, 4001 .leave_ocb = ieee80211_leave_ocb, 4002 .change_bss = ieee80211_change_bss, 4003 .set_txq_params = ieee80211_set_txq_params, 4004 .set_monitor_channel = ieee80211_set_monitor_channel, 4005 .suspend = ieee80211_suspend, 4006 .resume = ieee80211_resume, 4007 .scan = ieee80211_scan, 4008 .abort_scan = ieee80211_abort_scan, 4009 .sched_scan_start = ieee80211_sched_scan_start, 4010 .sched_scan_stop = ieee80211_sched_scan_stop, 4011 .auth = ieee80211_auth, 4012 .assoc = ieee80211_assoc, 4013 .deauth = ieee80211_deauth, 4014 .disassoc = ieee80211_disassoc, 4015 .join_ibss = ieee80211_join_ibss, 4016 .leave_ibss = ieee80211_leave_ibss, 4017 .set_mcast_rate = ieee80211_set_mcast_rate, 4018 .set_wiphy_params = ieee80211_set_wiphy_params, 4019 .set_tx_power = ieee80211_set_tx_power, 4020 .get_tx_power = ieee80211_get_tx_power, 4021 .set_wds_peer = ieee80211_set_wds_peer, 4022 .rfkill_poll = ieee80211_rfkill_poll, 4023 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 4024 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 4025 .set_power_mgmt = ieee80211_set_power_mgmt, 4026 .set_bitrate_mask = ieee80211_set_bitrate_mask, 4027 .remain_on_channel = ieee80211_remain_on_channel, 4028 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 4029 .mgmt_tx = ieee80211_mgmt_tx, 4030 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 4031 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 4032 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, 4033 .mgmt_frame_register = ieee80211_mgmt_frame_register, 4034 .set_antenna = ieee80211_set_antenna, 4035 .get_antenna = ieee80211_get_antenna, 4036 .set_rekey_data = ieee80211_set_rekey_data, 4037 .tdls_oper = ieee80211_tdls_oper, 4038 .tdls_mgmt = ieee80211_tdls_mgmt, 4039 .tdls_channel_switch = ieee80211_tdls_channel_switch, 4040 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 4041 .probe_client = ieee80211_probe_client, 4042 .set_noack_map = ieee80211_set_noack_map, 4043 #ifdef CONFIG_PM 4044 .set_wakeup = ieee80211_set_wakeup, 4045 #endif 4046 .get_channel = ieee80211_cfg_get_channel, 4047 .start_radar_detection = ieee80211_start_radar_detection, 4048 .end_cac = ieee80211_end_cac, 4049 .channel_switch = ieee80211_channel_switch, 4050 .set_qos_map = ieee80211_set_qos_map, 4051 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 4052 .add_tx_ts = ieee80211_add_tx_ts, 4053 .del_tx_ts = ieee80211_del_tx_ts, 4054 .start_nan = ieee80211_start_nan, 4055 .stop_nan = ieee80211_stop_nan, 4056 .nan_change_conf = ieee80211_nan_change_conf, 4057 .add_nan_func = ieee80211_add_nan_func, 4058 .del_nan_func = ieee80211_del_nan_func, 4059 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, 4060 .tx_control_port = ieee80211_tx_control_port, 4061 .get_txq_stats = ieee80211_get_txq_stats, 4062 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats, 4063 .start_pmsr = ieee80211_start_pmsr, 4064 .abort_pmsr = ieee80211_abort_pmsr, 4065 .probe_mesh_link = ieee80211_probe_mesh_link, 4066 }; 4067