1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * BSS client mode implementation 4 * Copyright 2003-2008, Jouni Malinen <j@w1.fi> 5 * Copyright 2004, Instant802 Networks, Inc. 6 * Copyright 2005, Devicescape Software, Inc. 7 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 8 * Copyright 2007, Michael Wu <flamingice@sourmilk.net> 9 * Copyright 2013-2014 Intel Mobile Communications GmbH 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright (C) 2018 - 2025 Intel Corporation 12 */ 13 14 #include <linux/delay.h> 15 #include <linux/fips.h> 16 #include <linux/if_ether.h> 17 #include <linux/skbuff.h> 18 #include <linux/if_arp.h> 19 #include <linux/etherdevice.h> 20 #include <linux/moduleparam.h> 21 #include <linux/rtnetlink.h> 22 #include <linux/crc32.h> 23 #include <linux/slab.h> 24 #include <linux/export.h> 25 #include <net/mac80211.h> 26 #include <linux/unaligned.h> 27 28 #include "ieee80211_i.h" 29 #include "driver-ops.h" 30 #include "rate.h" 31 #include "led.h" 32 #include "fils_aead.h" 33 34 #include <kunit/static_stub.h> 35 36 #define IEEE80211_AUTH_TIMEOUT (HZ / 5) 37 #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) 38 #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) 39 #define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2) 40 #define IEEE80211_AUTH_MAX_TRIES 3 41 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) 42 #define IEEE80211_AUTH_WAIT_SAE_RETRY (HZ * 2) 43 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) 44 #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) 45 #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) 46 #define IEEE80211_ASSOC_MAX_TRIES 3 47 48 #define IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS msecs_to_jiffies(100) 49 #define IEEE80211_ADV_TTLM_ST_UNDERFLOW 0xff00 50 51 #define IEEE80211_NEG_TTLM_REQ_TIMEOUT (HZ / 5) 52 53 static int max_nullfunc_tries = 2; 54 module_param(max_nullfunc_tries, int, 0644); 55 MODULE_PARM_DESC(max_nullfunc_tries, 56 "Maximum nullfunc tx tries before disconnecting (reason 4)."); 57 58 static int max_probe_tries = 5; 59 module_param(max_probe_tries, int, 0644); 60 MODULE_PARM_DESC(max_probe_tries, 61 "Maximum probe tries before disconnecting (reason 4)."); 62 63 /* 64 * Beacon loss timeout is calculated as N frames times the 65 * advertised beacon interval. This may need to be somewhat 66 * higher than what hardware might detect to account for 67 * delays in the host processing frames. But since we also 68 * probe on beacon miss before declaring the connection lost 69 * default to what we want. 70 */ 71 static int beacon_loss_count = 7; 72 module_param(beacon_loss_count, int, 0644); 73 MODULE_PARM_DESC(beacon_loss_count, 74 "Number of beacon intervals before we decide beacon was lost."); 75 76 /* 77 * Time the connection can be idle before we probe 78 * it to see if we can still talk to the AP. 79 */ 80 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) 81 /* 82 * Time we wait for a probe response after sending 83 * a probe request because of beacon loss or for 84 * checking the connection still works. 85 */ 86 static int probe_wait_ms = 500; 87 module_param(probe_wait_ms, int, 0644); 88 MODULE_PARM_DESC(probe_wait_ms, 89 "Maximum time(ms) to wait for probe response" 90 " before disconnecting (reason 4)."); 91 92 /* 93 * How many Beacon frames need to have been used in average signal strength 94 * before starting to indicate signal change events. 95 */ 96 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 97 98 /* 99 * We can have multiple work items (and connection probing) 100 * scheduling this timer, but we need to take care to only 101 * reschedule it when it should fire _earlier_ than it was 102 * asked for before, or if it's not pending right now. This 103 * function ensures that. Note that it then is required to 104 * run this function for all timeouts after the first one 105 * has happened -- the work that runs from this timer will 106 * do that. 107 */ 108 static void run_again(struct ieee80211_sub_if_data *sdata, 109 unsigned long timeout) 110 { 111 lockdep_assert_wiphy(sdata->local->hw.wiphy); 112 113 if (!timer_pending(&sdata->u.mgd.timer) || 114 time_before(timeout, sdata->u.mgd.timer.expires)) 115 mod_timer(&sdata->u.mgd.timer, timeout); 116 } 117 118 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) 119 { 120 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) 121 return; 122 123 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) 124 return; 125 126 mod_timer(&sdata->u.mgd.bcn_mon_timer, 127 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); 128 } 129 130 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) 131 { 132 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 133 134 if (unlikely(!ifmgd->associated)) 135 return; 136 137 if (ifmgd->probe_send_count) 138 ifmgd->probe_send_count = 0; 139 140 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) 141 return; 142 143 mod_timer(&ifmgd->conn_mon_timer, 144 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); 145 } 146 147 static int ecw2cw(int ecw) 148 { 149 return (1 << ecw) - 1; 150 } 151 152 static enum ieee80211_conn_mode 153 ieee80211_determine_ap_chan(struct ieee80211_sub_if_data *sdata, 154 struct ieee80211_channel *channel, 155 u32 vht_cap_info, 156 const struct ieee802_11_elems *elems, 157 bool ignore_ht_channel_mismatch, 158 const struct ieee80211_conn_settings *conn, 159 struct cfg80211_chan_def *chandef) 160 { 161 const struct ieee80211_ht_operation *ht_oper = elems->ht_operation; 162 const struct ieee80211_vht_operation *vht_oper = elems->vht_operation; 163 const struct ieee80211_he_operation *he_oper = elems->he_operation; 164 const struct ieee80211_eht_operation *eht_oper = elems->eht_operation; 165 struct ieee80211_supported_band *sband = 166 sdata->local->hw.wiphy->bands[channel->band]; 167 struct cfg80211_chan_def vht_chandef; 168 bool no_vht = false; 169 u32 ht_cfreq; 170 171 if (ieee80211_hw_check(&sdata->local->hw, STRICT)) 172 ignore_ht_channel_mismatch = false; 173 174 *chandef = (struct cfg80211_chan_def) { 175 .chan = channel, 176 .width = NL80211_CHAN_WIDTH_20_NOHT, 177 .center_freq1 = channel->center_freq, 178 .freq1_offset = channel->freq_offset, 179 }; 180 181 /* get special S1G case out of the way */ 182 if (sband->band == NL80211_BAND_S1GHZ) { 183 if (!ieee80211_chandef_s1g_oper(elems->s1g_oper, chandef)) { 184 sdata_info(sdata, 185 "Missing S1G Operation Element? Trying operating == primary\n"); 186 chandef->width = ieee80211_s1g_channel_width(channel); 187 } 188 189 return IEEE80211_CONN_MODE_S1G; 190 } 191 192 /* get special 6 GHz case out of the way */ 193 if (sband->band == NL80211_BAND_6GHZ) { 194 enum ieee80211_conn_mode mode = IEEE80211_CONN_MODE_EHT; 195 196 /* this is an error */ 197 if (conn->mode < IEEE80211_CONN_MODE_HE) 198 return IEEE80211_CONN_MODE_LEGACY; 199 200 if (!elems->he_6ghz_capa || !elems->he_cap) { 201 sdata_info(sdata, 202 "HE 6 GHz AP is missing HE/HE 6 GHz band capability\n"); 203 return IEEE80211_CONN_MODE_LEGACY; 204 } 205 206 if (!eht_oper || !elems->eht_cap) { 207 eht_oper = NULL; 208 mode = IEEE80211_CONN_MODE_HE; 209 } 210 211 if (!ieee80211_chandef_he_6ghz_oper(sdata->local, he_oper, 212 eht_oper, chandef)) { 213 sdata_info(sdata, "bad HE/EHT 6 GHz operation\n"); 214 return IEEE80211_CONN_MODE_LEGACY; 215 } 216 217 return mode; 218 } 219 220 /* now we have the progression HT, VHT, ... */ 221 if (conn->mode < IEEE80211_CONN_MODE_HT) 222 return IEEE80211_CONN_MODE_LEGACY; 223 224 if (!ht_oper || !elems->ht_cap_elem) 225 return IEEE80211_CONN_MODE_LEGACY; 226 227 chandef->width = NL80211_CHAN_WIDTH_20; 228 229 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, 230 channel->band); 231 /* check that channel matches the right operating channel */ 232 if (!ignore_ht_channel_mismatch && channel->center_freq != ht_cfreq) { 233 /* 234 * It's possible that some APs are confused here; 235 * Netgear WNDR3700 sometimes reports 4 higher than 236 * the actual channel in association responses, but 237 * since we look at probe response/beacon data here 238 * it should be OK. 239 */ 240 sdata_info(sdata, 241 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", 242 channel->center_freq, ht_cfreq, 243 ht_oper->primary_chan, channel->band); 244 return IEEE80211_CONN_MODE_LEGACY; 245 } 246 247 ieee80211_chandef_ht_oper(ht_oper, chandef); 248 249 if (conn->mode < IEEE80211_CONN_MODE_VHT) 250 return IEEE80211_CONN_MODE_HT; 251 252 vht_chandef = *chandef; 253 254 /* 255 * having he_cap/he_oper parsed out implies we're at 256 * least operating as HE STA 257 */ 258 if (elems->he_cap && he_oper && 259 he_oper->he_oper_params & cpu_to_le32(IEEE80211_HE_OPERATION_VHT_OPER_INFO)) { 260 struct ieee80211_vht_operation he_oper_vht_cap; 261 262 /* 263 * Set only first 3 bytes (other 2 aren't used in 264 * ieee80211_chandef_vht_oper() anyway) 265 */ 266 memcpy(&he_oper_vht_cap, he_oper->optional, 3); 267 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0); 268 269 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info, 270 &he_oper_vht_cap, ht_oper, 271 &vht_chandef)) { 272 sdata_info(sdata, 273 "HE AP VHT information is invalid, disabling HE\n"); 274 /* this will cause us to re-parse as VHT STA */ 275 return IEEE80211_CONN_MODE_VHT; 276 } 277 } else if (!vht_oper || !elems->vht_cap_elem) { 278 if (sband->band == NL80211_BAND_5GHZ) { 279 sdata_info(sdata, 280 "VHT information is missing, disabling VHT\n"); 281 return IEEE80211_CONN_MODE_HT; 282 } 283 no_vht = true; 284 } else if (sband->band == NL80211_BAND_2GHZ) { 285 no_vht = true; 286 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw, 287 vht_cap_info, 288 vht_oper, ht_oper, 289 &vht_chandef)) { 290 sdata_info(sdata, 291 "AP VHT information is invalid, disabling VHT\n"); 292 return IEEE80211_CONN_MODE_HT; 293 } 294 295 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { 296 sdata_info(sdata, 297 "AP VHT information doesn't match HT, disabling VHT\n"); 298 return IEEE80211_CONN_MODE_HT; 299 } 300 301 *chandef = vht_chandef; 302 303 /* stick to current max mode if we or the AP don't have HE */ 304 if (conn->mode < IEEE80211_CONN_MODE_HE || 305 !elems->he_operation || !elems->he_cap) { 306 if (no_vht) 307 return IEEE80211_CONN_MODE_HT; 308 return IEEE80211_CONN_MODE_VHT; 309 } 310 311 /* stick to HE if we or the AP don't have EHT */ 312 if (conn->mode < IEEE80211_CONN_MODE_EHT || 313 !eht_oper || !elems->eht_cap) 314 return IEEE80211_CONN_MODE_HE; 315 316 /* 317 * handle the case that the EHT operation indicates that it holds EHT 318 * operation information (in case that the channel width differs from 319 * the channel width reported in HT/VHT/HE). 320 */ 321 if (eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT) { 322 struct cfg80211_chan_def eht_chandef = *chandef; 323 324 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 325 &eht_chandef); 326 327 eht_chandef.punctured = 328 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 329 330 if (!cfg80211_chandef_valid(&eht_chandef)) { 331 sdata_info(sdata, 332 "AP EHT information is invalid, disabling EHT\n"); 333 return IEEE80211_CONN_MODE_HE; 334 } 335 336 if (!cfg80211_chandef_compatible(chandef, &eht_chandef)) { 337 sdata_info(sdata, 338 "AP EHT information doesn't match HT/VHT/HE, disabling EHT\n"); 339 return IEEE80211_CONN_MODE_HE; 340 } 341 342 *chandef = eht_chandef; 343 } 344 345 return IEEE80211_CONN_MODE_EHT; 346 } 347 348 static bool 349 ieee80211_verify_sta_ht_mcs_support(struct ieee80211_sub_if_data *sdata, 350 struct ieee80211_supported_band *sband, 351 const struct ieee80211_ht_operation *ht_op) 352 { 353 struct ieee80211_sta_ht_cap sta_ht_cap; 354 int i; 355 356 if (sband->band == NL80211_BAND_6GHZ) 357 return true; 358 359 if (!ht_op) 360 return false; 361 362 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); 363 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); 364 365 /* 366 * P802.11REVme/D7.0 - 6.5.4.2.4 367 * ... 368 * If the MLME of an HT STA receives an MLME-JOIN.request primitive 369 * with the SelectedBSS parameter containing a Basic HT-MCS Set field 370 * in the HT Operation parameter that contains any unsupported MCSs, 371 * the MLME response in the resulting MLME-JOIN.confirm primitive shall 372 * contain a ResultCode parameter that is not set to the value SUCCESS. 373 * ... 374 */ 375 376 /* Simply check that all basic rates are in the STA RX mask */ 377 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 378 if ((ht_op->basic_set[i] & sta_ht_cap.mcs.rx_mask[i]) != 379 ht_op->basic_set[i]) 380 return false; 381 } 382 383 return true; 384 } 385 386 static bool 387 ieee80211_verify_sta_vht_mcs_support(struct ieee80211_sub_if_data *sdata, 388 int link_id, 389 struct ieee80211_supported_band *sband, 390 const struct ieee80211_vht_operation *vht_op) 391 { 392 struct ieee80211_sta_vht_cap sta_vht_cap; 393 u16 ap_min_req_set, sta_rx_mcs_map, sta_tx_mcs_map; 394 int nss; 395 396 if (sband->band != NL80211_BAND_5GHZ) 397 return true; 398 399 if (!vht_op) 400 return false; 401 402 memcpy(&sta_vht_cap, &sband->vht_cap, sizeof(sta_vht_cap)); 403 ieee80211_apply_vhtcap_overrides(sdata, &sta_vht_cap); 404 405 ap_min_req_set = le16_to_cpu(vht_op->basic_mcs_set); 406 sta_rx_mcs_map = le16_to_cpu(sta_vht_cap.vht_mcs.rx_mcs_map); 407 sta_tx_mcs_map = le16_to_cpu(sta_vht_cap.vht_mcs.tx_mcs_map); 408 409 /* 410 * Many APs are incorrectly advertising an all-zero value here, 411 * which really means MCS 0-7 are required for 1-8 streams, but 412 * they don't really mean it that way. 413 * Some other APs are incorrectly advertising 3 spatial streams 414 * with MCS 0-7 are required, but don't really mean it that way 415 * and we'll connect only with HT, rather than even HE. 416 * As a result, unfortunately the VHT basic MCS/NSS set cannot 417 * be used at all, so check it only in strict mode. 418 */ 419 if (!ieee80211_hw_check(&sdata->local->hw, STRICT)) 420 return true; 421 422 /* 423 * P802.11REVme/D7.0 - 6.5.4.2.4 424 * ... 425 * If the MLME of a VHT STA receives an MLME-JOIN.request primitive 426 * with a SelectedBSS parameter containing a Basic VHT-MCS And NSS Set 427 * field in the VHT Operation parameter that contains any unsupported 428 * <VHT-MCS, NSS> tuple, the MLME response in the resulting 429 * MLME-JOIN.confirm primitive shall contain a ResultCode parameter 430 * that is not set to the value SUCCESS. 431 * ... 432 */ 433 for (nss = 8; nss > 0; nss--) { 434 u8 ap_op_val = (ap_min_req_set >> (2 * (nss - 1))) & 3; 435 u8 sta_rx_val; 436 u8 sta_tx_val; 437 438 if (ap_op_val == IEEE80211_HE_MCS_NOT_SUPPORTED) 439 continue; 440 441 sta_rx_val = (sta_rx_mcs_map >> (2 * (nss - 1))) & 3; 442 sta_tx_val = (sta_tx_mcs_map >> (2 * (nss - 1))) & 3; 443 444 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 445 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 446 sta_rx_val < ap_op_val || sta_tx_val < ap_op_val) { 447 link_id_info(sdata, link_id, 448 "Missing mandatory rates for %d Nss, rx %d, tx %d oper %d, disable VHT\n", 449 nss, sta_rx_val, sta_tx_val, ap_op_val); 450 return false; 451 } 452 } 453 454 return true; 455 } 456 457 static bool 458 ieee80211_verify_peer_he_mcs_support(struct ieee80211_sub_if_data *sdata, 459 int link_id, 460 const struct ieee80211_he_cap_elem *he_cap, 461 const struct ieee80211_he_operation *he_op) 462 { 463 struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp; 464 u16 mcs_80_map_tx, mcs_80_map_rx; 465 u16 ap_min_req_set; 466 int nss; 467 468 if (!he_cap) 469 return false; 470 471 /* mcs_nss is right after he_cap info */ 472 he_mcs_nss_supp = (void *)(he_cap + 1); 473 474 mcs_80_map_tx = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80); 475 mcs_80_map_rx = le16_to_cpu(he_mcs_nss_supp->rx_mcs_80); 476 477 /* P802.11-REVme/D0.3 478 * 27.1.1 Introduction to the HE PHY 479 * ... 480 * An HE STA shall support the following features: 481 * ... 482 * Single spatial stream HE-MCSs 0 to 7 (transmit and receive) in all 483 * supported channel widths for HE SU PPDUs 484 */ 485 if ((mcs_80_map_tx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED || 486 (mcs_80_map_rx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED) { 487 link_id_info(sdata, link_id, 488 "Missing mandatory rates for 1 Nss, rx 0x%x, tx 0x%x, disable HE\n", 489 mcs_80_map_tx, mcs_80_map_rx); 490 return false; 491 } 492 493 if (!he_op) 494 return true; 495 496 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set); 497 498 /* 499 * Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all 500 * zeroes, which is nonsense, and completely inconsistent with itself 501 * (it doesn't have 8 streams). Accept the settings in this case anyway. 502 */ 503 if (!ieee80211_hw_check(&sdata->local->hw, STRICT) && !ap_min_req_set) 504 return true; 505 506 /* make sure the AP is consistent with itself 507 * 508 * P802.11-REVme/D0.3 509 * 26.17.1 Basic HE BSS operation 510 * 511 * A STA that is operating in an HE BSS shall be able to receive and 512 * transmit at each of the <HE-MCS, NSS> tuple values indicated by the 513 * Basic HE-MCS And NSS Set field of the HE Operation parameter of the 514 * MLME-START.request primitive and shall be able to receive at each of 515 * the <HE-MCS, NSS> tuple values indicated by the Supported HE-MCS and 516 * NSS Set field in the HE Capabilities parameter of the MLMESTART.request 517 * primitive 518 */ 519 for (nss = 8; nss > 0; nss--) { 520 u8 ap_op_val = (ap_min_req_set >> (2 * (nss - 1))) & 3; 521 u8 ap_rx_val; 522 u8 ap_tx_val; 523 524 if (ap_op_val == IEEE80211_HE_MCS_NOT_SUPPORTED) 525 continue; 526 527 ap_rx_val = (mcs_80_map_rx >> (2 * (nss - 1))) & 3; 528 ap_tx_val = (mcs_80_map_tx >> (2 * (nss - 1))) & 3; 529 530 if (ap_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 531 ap_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 532 ap_rx_val < ap_op_val || ap_tx_val < ap_op_val) { 533 link_id_info(sdata, link_id, 534 "Invalid rates for %d Nss, rx %d, tx %d oper %d, disable HE\n", 535 nss, ap_rx_val, ap_tx_val, ap_op_val); 536 return false; 537 } 538 } 539 540 return true; 541 } 542 543 static bool 544 ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata, 545 struct ieee80211_supported_band *sband, 546 const struct ieee80211_he_operation *he_op) 547 { 548 const struct ieee80211_sta_he_cap *sta_he_cap = 549 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 550 u16 ap_min_req_set; 551 int i; 552 553 if (!sta_he_cap || !he_op) 554 return false; 555 556 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set); 557 558 /* 559 * Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all 560 * zeroes, which is nonsense, and completely inconsistent with itself 561 * (it doesn't have 8 streams). Accept the settings in this case anyway. 562 */ 563 if (!ieee80211_hw_check(&sdata->local->hw, STRICT) && !ap_min_req_set) 564 return true; 565 566 /* Need to go over for 80MHz, 160MHz and for 80+80 */ 567 for (i = 0; i < 3; i++) { 568 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp = 569 &sta_he_cap->he_mcs_nss_supp; 570 u16 sta_mcs_map_rx = 571 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]); 572 u16 sta_mcs_map_tx = 573 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]); 574 u8 nss; 575 bool verified = true; 576 577 /* 578 * For each band there is a maximum of 8 spatial streams 579 * possible. Each of the sta_mcs_map_* is a 16-bit struct built 580 * of 2 bits per NSS (1-8), with the values defined in enum 581 * ieee80211_he_mcs_support. Need to make sure STA TX and RX 582 * capabilities aren't less than the AP's minimum requirements 583 * for this HE BSS per SS. 584 * It is enough to find one such band that meets the reqs. 585 */ 586 for (nss = 8; nss > 0; nss--) { 587 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3; 588 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3; 589 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3; 590 591 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED) 592 continue; 593 594 /* 595 * Make sure the HE AP doesn't require MCSs that aren't 596 * supported by the client as required by spec 597 * 598 * P802.11-REVme/D0.3 599 * 26.17.1 Basic HE BSS operation 600 * 601 * An HE STA shall not attempt to join * (MLME-JOIN.request primitive) 602 * a BSS, unless it supports (i.e., is able to both transmit and 603 * receive using) all of the <HE-MCS, NSS> tuples in the basic 604 * HE-MCS and NSS set. 605 */ 606 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 607 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || 608 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) { 609 verified = false; 610 break; 611 } 612 } 613 614 if (verified) 615 return true; 616 } 617 618 /* If here, STA doesn't meet AP's HE min requirements */ 619 return false; 620 } 621 622 static u8 623 ieee80211_get_eht_cap_mcs_nss(const struct ieee80211_sta_he_cap *sta_he_cap, 624 const struct ieee80211_sta_eht_cap *sta_eht_cap, 625 unsigned int idx, int bw) 626 { 627 u8 he_phy_cap0 = sta_he_cap->he_cap_elem.phy_cap_info[0]; 628 u8 eht_phy_cap0 = sta_eht_cap->eht_cap_elem.phy_cap_info[0]; 629 630 /* handle us being a 20 MHz-only EHT STA - with four values 631 * for MCS 0-7, 8-9, 10-11, 12-13. 632 */ 633 if (!(he_phy_cap0 & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) 634 return sta_eht_cap->eht_mcs_nss_supp.only_20mhz.rx_tx_max_nss[idx]; 635 636 /* the others have MCS 0-9 together, rather than separately from 0-7 */ 637 if (idx > 0) 638 idx--; 639 640 switch (bw) { 641 case 0: 642 return sta_eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_max_nss[idx]; 643 case 1: 644 if (!(he_phy_cap0 & 645 (IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 646 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G))) 647 return 0xff; /* pass check */ 648 return sta_eht_cap->eht_mcs_nss_supp.bw._160.rx_tx_max_nss[idx]; 649 case 2: 650 if (!(eht_phy_cap0 & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)) 651 return 0xff; /* pass check */ 652 return sta_eht_cap->eht_mcs_nss_supp.bw._320.rx_tx_max_nss[idx]; 653 } 654 655 WARN_ON(1); 656 return 0; 657 } 658 659 static bool 660 ieee80211_verify_sta_eht_mcs_support(struct ieee80211_sub_if_data *sdata, 661 struct ieee80211_supported_band *sband, 662 const struct ieee80211_eht_operation *eht_op) 663 { 664 const struct ieee80211_sta_he_cap *sta_he_cap = 665 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 666 const struct ieee80211_sta_eht_cap *sta_eht_cap = 667 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 668 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *req; 669 unsigned int i; 670 671 if (!sta_he_cap || !sta_eht_cap || !eht_op) 672 return false; 673 674 req = &eht_op->basic_mcs_nss; 675 676 for (i = 0; i < ARRAY_SIZE(req->rx_tx_max_nss); i++) { 677 u8 req_rx_nss, req_tx_nss; 678 unsigned int bw; 679 680 req_rx_nss = u8_get_bits(req->rx_tx_max_nss[i], 681 IEEE80211_EHT_MCS_NSS_RX); 682 req_tx_nss = u8_get_bits(req->rx_tx_max_nss[i], 683 IEEE80211_EHT_MCS_NSS_TX); 684 685 for (bw = 0; bw < 3; bw++) { 686 u8 have, have_rx_nss, have_tx_nss; 687 688 have = ieee80211_get_eht_cap_mcs_nss(sta_he_cap, 689 sta_eht_cap, 690 i, bw); 691 have_rx_nss = u8_get_bits(have, 692 IEEE80211_EHT_MCS_NSS_RX); 693 have_tx_nss = u8_get_bits(have, 694 IEEE80211_EHT_MCS_NSS_TX); 695 696 if (req_rx_nss > have_rx_nss || 697 req_tx_nss > have_tx_nss) 698 return false; 699 } 700 } 701 702 return true; 703 } 704 705 static void ieee80211_get_rates(struct ieee80211_supported_band *sband, 706 const u8 *supp_rates, 707 unsigned int supp_rates_len, 708 const u8 *ext_supp_rates, 709 unsigned int ext_supp_rates_len, 710 u32 *rates, u32 *basic_rates, 711 unsigned long *unknown_rates_selectors, 712 bool *have_higher_than_11mbit, 713 int *min_rate, int *min_rate_index) 714 { 715 int i, j; 716 717 for (i = 0; i < supp_rates_len + ext_supp_rates_len; i++) { 718 u8 supp_rate = i < supp_rates_len ? 719 supp_rates[i] : 720 ext_supp_rates[i - supp_rates_len]; 721 int rate = supp_rate & 0x7f; 722 bool is_basic = !!(supp_rate & 0x80); 723 724 if ((rate * 5) > 110 && have_higher_than_11mbit) 725 *have_higher_than_11mbit = true; 726 727 /* 728 * Skip membership selectors since they're not rates. 729 * 730 * Note: Even though the membership selector and the basic 731 * rate flag share the same bit, they are not exactly 732 * the same. 733 */ 734 if (is_basic && rate >= BSS_MEMBERSHIP_SELECTOR_MIN) { 735 if (unknown_rates_selectors) 736 set_bit(rate, unknown_rates_selectors); 737 continue; 738 } 739 740 for (j = 0; j < sband->n_bitrates; j++) { 741 struct ieee80211_rate *br; 742 int brate; 743 744 br = &sband->bitrates[j]; 745 746 brate = DIV_ROUND_UP(br->bitrate, 5); 747 if (brate == rate) { 748 if (rates) 749 *rates |= BIT(j); 750 if (is_basic && basic_rates) 751 *basic_rates |= BIT(j); 752 if (min_rate && (rate * 5) < *min_rate) { 753 *min_rate = rate * 5; 754 if (min_rate_index) 755 *min_rate_index = j; 756 } 757 break; 758 } 759 } 760 761 /* Handle an unknown entry as if it is an unknown selector */ 762 if (is_basic && unknown_rates_selectors && j == sband->n_bitrates) 763 set_bit(rate, unknown_rates_selectors); 764 } 765 } 766 767 static bool ieee80211_chandef_usable(struct ieee80211_sub_if_data *sdata, 768 const struct cfg80211_chan_def *chandef, 769 u32 prohibited_flags) 770 { 771 if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, 772 chandef, prohibited_flags)) 773 return false; 774 775 if (chandef->punctured && 776 ieee80211_hw_check(&sdata->local->hw, DISALLOW_PUNCTURING)) 777 return false; 778 779 return true; 780 } 781 782 static int ieee80211_chandef_num_subchans(const struct cfg80211_chan_def *c) 783 { 784 if (c->width == NL80211_CHAN_WIDTH_80P80) 785 return 4 + 4; 786 787 return cfg80211_chandef_get_width(c) / 20; 788 } 789 790 static int ieee80211_chandef_num_widths(const struct cfg80211_chan_def *c) 791 { 792 switch (c->width) { 793 case NL80211_CHAN_WIDTH_20: 794 case NL80211_CHAN_WIDTH_20_NOHT: 795 return 1; 796 case NL80211_CHAN_WIDTH_40: 797 return 2; 798 case NL80211_CHAN_WIDTH_80P80: 799 case NL80211_CHAN_WIDTH_80: 800 return 3; 801 case NL80211_CHAN_WIDTH_160: 802 return 4; 803 case NL80211_CHAN_WIDTH_320: 804 return 5; 805 default: 806 WARN_ON(1); 807 return 0; 808 } 809 } 810 811 VISIBLE_IF_MAC80211_KUNIT int 812 ieee80211_calc_chandef_subchan_offset(const struct cfg80211_chan_def *ap, 813 u8 n_partial_subchans) 814 { 815 int n = ieee80211_chandef_num_subchans(ap); 816 struct cfg80211_chan_def tmp = *ap; 817 int offset = 0; 818 819 /* 820 * Given a chandef (in this context, it's the AP's) and a number 821 * of subchannels that we want to look at ('n_partial_subchans'), 822 * calculate the offset in number of subchannels between the full 823 * and the subset with the desired width. 824 */ 825 826 /* same number of subchannels means no offset, obviously */ 827 if (n == n_partial_subchans) 828 return 0; 829 830 /* don't WARN - misconfigured APs could cause this if their N > width */ 831 if (n < n_partial_subchans) 832 return 0; 833 834 while (ieee80211_chandef_num_subchans(&tmp) > n_partial_subchans) { 835 u32 prev = tmp.center_freq1; 836 837 ieee80211_chandef_downgrade(&tmp, NULL); 838 839 /* 840 * if center_freq moved up, half the original channels 841 * are gone now but were below, so increase offset 842 */ 843 if (prev < tmp.center_freq1) 844 offset += ieee80211_chandef_num_subchans(&tmp); 845 } 846 847 /* 848 * 80+80 with secondary 80 below primary - four subchannels for it 849 * (we cannot downgrade *to* 80+80, so no need to consider 'tmp') 850 */ 851 if (ap->width == NL80211_CHAN_WIDTH_80P80 && 852 ap->center_freq2 < ap->center_freq1) 853 offset += 4; 854 855 return offset; 856 } 857 EXPORT_SYMBOL_IF_MAC80211_KUNIT(ieee80211_calc_chandef_subchan_offset); 858 859 VISIBLE_IF_MAC80211_KUNIT void 860 ieee80211_rearrange_tpe_psd(struct ieee80211_parsed_tpe_psd *psd, 861 const struct cfg80211_chan_def *ap, 862 const struct cfg80211_chan_def *used) 863 { 864 u8 needed = ieee80211_chandef_num_subchans(used); 865 u8 have = ieee80211_chandef_num_subchans(ap); 866 u8 tmp[IEEE80211_TPE_PSD_ENTRIES_320MHZ]; 867 u8 offset; 868 869 if (!psd->valid) 870 return; 871 872 /* if N is zero, all defaults were used, no point in rearranging */ 873 if (!psd->n) 874 goto out; 875 876 BUILD_BUG_ON(sizeof(tmp) != sizeof(psd->power)); 877 878 /* 879 * This assumes that 'N' is consistent with the HE channel, as 880 * it should be (otherwise the AP is broken). 881 * 882 * In psd->power we have values in the order 0..N, 0..K, where 883 * N+K should cover the entire channel per 'ap', but even if it 884 * doesn't then we've pre-filled 'unlimited' as defaults. 885 * 886 * But this is all the wrong order, we want to have them in the 887 * order of the 'used' channel. 888 * 889 * So for example, we could have a 320 MHz EHT AP, which has the 890 * HE channel as 80 MHz (e.g. due to puncturing, which doesn't 891 * seem to be considered for the TPE), as follows: 892 * 893 * EHT 320: | | | | | | | | | | | | | | | | | 894 * HE 80: | | | | | 895 * used 160: | | | | | | | | | 896 * 897 * N entries: |--|--|--|--| 898 * K entries: |--|--|--|--|--|--|--|--| |--|--|--|--| 899 * power idx: 4 5 6 7 8 9 10 11 0 1 2 3 12 13 14 15 900 * full chan: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 901 * used chan: 0 1 2 3 4 5 6 7 902 * 903 * The idx in the power array ('power idx') is like this since it 904 * comes directly from the element's N and K entries in their 905 * element order, and those are this way for HE compatibility. 906 * 907 * Rearrange them as desired here, first by putting them into the 908 * 'full chan' order, and then selecting the necessary subset for 909 * the 'used chan'. 910 */ 911 912 /* first reorder according to AP channel */ 913 offset = ieee80211_calc_chandef_subchan_offset(ap, psd->n); 914 for (int i = 0; i < have; i++) { 915 if (i < offset) 916 tmp[i] = psd->power[i + psd->n]; 917 else if (i < offset + psd->n) 918 tmp[i] = psd->power[i - offset]; 919 else 920 tmp[i] = psd->power[i]; 921 } 922 923 /* 924 * and then select the subset for the used channel 925 * (set everything to defaults first in case a driver is confused) 926 */ 927 memset(psd->power, IEEE80211_TPE_PSD_NO_LIMIT, sizeof(psd->power)); 928 offset = ieee80211_calc_chandef_subchan_offset(ap, needed); 929 for (int i = 0; i < needed; i++) 930 psd->power[i] = tmp[offset + i]; 931 932 out: 933 /* limit, but don't lie if there are defaults in the data */ 934 if (needed < psd->count) 935 psd->count = needed; 936 } 937 EXPORT_SYMBOL_IF_MAC80211_KUNIT(ieee80211_rearrange_tpe_psd); 938 939 static void ieee80211_rearrange_tpe(struct ieee80211_parsed_tpe *tpe, 940 const struct cfg80211_chan_def *ap, 941 const struct cfg80211_chan_def *used) 942 { 943 /* ignore this completely for narrow/invalid channels */ 944 if (!ieee80211_chandef_num_subchans(ap) || 945 !ieee80211_chandef_num_subchans(used)) { 946 ieee80211_clear_tpe(tpe); 947 return; 948 } 949 950 for (int i = 0; i < 2; i++) { 951 int needed_pwr_count; 952 953 ieee80211_rearrange_tpe_psd(&tpe->psd_local[i], ap, used); 954 ieee80211_rearrange_tpe_psd(&tpe->psd_reg_client[i], ap, used); 955 956 /* limit this to the widths we actually need */ 957 needed_pwr_count = ieee80211_chandef_num_widths(used); 958 if (needed_pwr_count < tpe->max_local[i].count) 959 tpe->max_local[i].count = needed_pwr_count; 960 if (needed_pwr_count < tpe->max_reg_client[i].count) 961 tpe->max_reg_client[i].count = needed_pwr_count; 962 } 963 } 964 965 /* 966 * The AP part of the channel request is used to distinguish settings 967 * to the device used for wider bandwidth OFDMA. This is used in the 968 * channel context code to assign two channel contexts even if they're 969 * both for the same channel, if the AP bandwidths are incompatible. 970 * If not EHT (or driver override) then ap.chan == NULL indicates that 971 * there's no wider BW OFDMA used. 972 */ 973 static void ieee80211_set_chanreq_ap(struct ieee80211_sub_if_data *sdata, 974 struct ieee80211_chan_req *chanreq, 975 struct ieee80211_conn_settings *conn, 976 struct cfg80211_chan_def *ap_chandef) 977 { 978 chanreq->ap.chan = NULL; 979 980 if (conn->mode < IEEE80211_CONN_MODE_EHT) 981 return; 982 if (sdata->vif.driver_flags & IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW) 983 return; 984 985 chanreq->ap = *ap_chandef; 986 } 987 988 VISIBLE_IF_MAC80211_KUNIT struct ieee802_11_elems * 989 ieee80211_determine_chan_mode(struct ieee80211_sub_if_data *sdata, 990 struct ieee80211_conn_settings *conn, 991 struct cfg80211_bss *cbss, int link_id, 992 struct ieee80211_chan_req *chanreq, 993 struct cfg80211_chan_def *ap_chandef, 994 unsigned long *userspace_selectors) 995 { 996 const struct cfg80211_bss_ies *ies = rcu_dereference(cbss->ies); 997 struct ieee80211_bss *bss = (void *)cbss->priv; 998 struct ieee80211_channel *channel = cbss->channel; 999 struct ieee80211_elems_parse_params parse_params = { 1000 .link_id = -1, 1001 .from_ap = true, 1002 .start = ies->data, 1003 .len = ies->len, 1004 }; 1005 struct ieee802_11_elems *elems; 1006 struct ieee80211_supported_band *sband; 1007 enum ieee80211_conn_mode ap_mode; 1008 unsigned long unknown_rates_selectors[BITS_TO_LONGS(128)] = {}; 1009 unsigned long sta_selectors[BITS_TO_LONGS(128)] = {}; 1010 int ret; 1011 1012 again: 1013 parse_params.mode = conn->mode; 1014 elems = ieee802_11_parse_elems_full(&parse_params); 1015 if (!elems) 1016 return ERR_PTR(-ENOMEM); 1017 1018 ap_mode = ieee80211_determine_ap_chan(sdata, channel, bss->vht_cap_info, 1019 elems, false, conn, ap_chandef); 1020 1021 /* this should be impossible since parsing depends on our mode */ 1022 if (WARN_ON(ap_mode > conn->mode)) { 1023 ret = -EINVAL; 1024 goto free; 1025 } 1026 1027 if (conn->mode != ap_mode) { 1028 conn->mode = ap_mode; 1029 kfree(elems); 1030 goto again; 1031 } 1032 1033 mlme_link_id_dbg(sdata, link_id, "determined AP %pM to be %s\n", 1034 cbss->bssid, ieee80211_conn_mode_str(ap_mode)); 1035 1036 sband = sdata->local->hw.wiphy->bands[channel->band]; 1037 1038 ieee80211_get_rates(sband, elems->supp_rates, elems->supp_rates_len, 1039 elems->ext_supp_rates, elems->ext_supp_rates_len, 1040 NULL, NULL, unknown_rates_selectors, NULL, NULL, 1041 NULL); 1042 1043 switch (channel->band) { 1044 case NL80211_BAND_S1GHZ: 1045 if (WARN_ON(ap_mode != IEEE80211_CONN_MODE_S1G)) { 1046 ret = -EINVAL; 1047 goto free; 1048 } 1049 return elems; 1050 case NL80211_BAND_6GHZ: 1051 if (ap_mode < IEEE80211_CONN_MODE_HE) { 1052 link_id_info(sdata, link_id, 1053 "Rejecting non-HE 6/7 GHz connection"); 1054 ret = -EINVAL; 1055 goto free; 1056 } 1057 break; 1058 default: 1059 if (WARN_ON(ap_mode == IEEE80211_CONN_MODE_S1G)) { 1060 ret = -EINVAL; 1061 goto free; 1062 } 1063 } 1064 1065 switch (ap_mode) { 1066 case IEEE80211_CONN_MODE_S1G: 1067 WARN_ON(1); 1068 ret = -EINVAL; 1069 goto free; 1070 case IEEE80211_CONN_MODE_LEGACY: 1071 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 1072 break; 1073 case IEEE80211_CONN_MODE_HT: 1074 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1075 conn->bw_limit, 1076 IEEE80211_CONN_BW_LIMIT_40); 1077 break; 1078 case IEEE80211_CONN_MODE_VHT: 1079 case IEEE80211_CONN_MODE_HE: 1080 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1081 conn->bw_limit, 1082 IEEE80211_CONN_BW_LIMIT_160); 1083 break; 1084 case IEEE80211_CONN_MODE_EHT: 1085 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1086 conn->bw_limit, 1087 IEEE80211_CONN_BW_LIMIT_320); 1088 break; 1089 } 1090 1091 chanreq->oper = *ap_chandef; 1092 1093 bitmap_copy(sta_selectors, userspace_selectors, 128); 1094 if (conn->mode >= IEEE80211_CONN_MODE_HT) 1095 set_bit(BSS_MEMBERSHIP_SELECTOR_HT_PHY, sta_selectors); 1096 if (conn->mode >= IEEE80211_CONN_MODE_VHT) 1097 set_bit(BSS_MEMBERSHIP_SELECTOR_VHT_PHY, sta_selectors); 1098 if (conn->mode >= IEEE80211_CONN_MODE_HE) 1099 set_bit(BSS_MEMBERSHIP_SELECTOR_HE_PHY, sta_selectors); 1100 if (conn->mode >= IEEE80211_CONN_MODE_EHT) 1101 set_bit(BSS_MEMBERSHIP_SELECTOR_EHT_PHY, sta_selectors); 1102 1103 /* 1104 * We do not support EPD or GLK so never add them. 1105 * SAE_H2E is handled through userspace_selectors. 1106 */ 1107 1108 /* Check if we support all required features */ 1109 if (!bitmap_subset(unknown_rates_selectors, sta_selectors, 128)) { 1110 link_id_info(sdata, link_id, 1111 "required basic rate or BSS membership selectors not supported or disabled, rejecting connection\n"); 1112 ret = -EINVAL; 1113 goto free; 1114 } 1115 1116 ieee80211_set_chanreq_ap(sdata, chanreq, conn, ap_chandef); 1117 1118 while (!ieee80211_chandef_usable(sdata, &chanreq->oper, 1119 IEEE80211_CHAN_DISABLED)) { 1120 if (WARN_ON(chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT)) { 1121 ret = -EINVAL; 1122 goto free; 1123 } 1124 1125 ieee80211_chanreq_downgrade(chanreq, conn); 1126 } 1127 1128 if (conn->mode >= IEEE80211_CONN_MODE_HE && 1129 !cfg80211_chandef_usable(sdata->wdev.wiphy, &chanreq->oper, 1130 IEEE80211_CHAN_NO_HE)) { 1131 conn->mode = IEEE80211_CONN_MODE_VHT; 1132 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1133 conn->bw_limit, 1134 IEEE80211_CONN_BW_LIMIT_160); 1135 } 1136 1137 if (conn->mode >= IEEE80211_CONN_MODE_EHT && 1138 !cfg80211_chandef_usable(sdata->wdev.wiphy, &chanreq->oper, 1139 IEEE80211_CHAN_NO_EHT)) { 1140 conn->mode = IEEE80211_CONN_MODE_HE; 1141 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1142 conn->bw_limit, 1143 IEEE80211_CONN_BW_LIMIT_160); 1144 } 1145 1146 if (chanreq->oper.width != ap_chandef->width || ap_mode != conn->mode) 1147 link_id_info(sdata, link_id, 1148 "regulatory prevented using AP config, downgraded\n"); 1149 1150 if (conn->mode >= IEEE80211_CONN_MODE_HT && 1151 !ieee80211_verify_sta_ht_mcs_support(sdata, sband, 1152 elems->ht_operation)) { 1153 conn->mode = IEEE80211_CONN_MODE_LEGACY; 1154 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 1155 link_id_info(sdata, link_id, 1156 "required MCSes not supported, disabling HT\n"); 1157 } 1158 1159 if (conn->mode >= IEEE80211_CONN_MODE_VHT && 1160 !ieee80211_verify_sta_vht_mcs_support(sdata, link_id, sband, 1161 elems->vht_operation)) { 1162 conn->mode = IEEE80211_CONN_MODE_HT; 1163 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1164 conn->bw_limit, 1165 IEEE80211_CONN_BW_LIMIT_40); 1166 link_id_info(sdata, link_id, 1167 "required MCSes not supported, disabling VHT\n"); 1168 } 1169 1170 if (conn->mode >= IEEE80211_CONN_MODE_HE && 1171 (!ieee80211_verify_peer_he_mcs_support(sdata, link_id, 1172 (void *)elems->he_cap, 1173 elems->he_operation) || 1174 !ieee80211_verify_sta_he_mcs_support(sdata, sband, 1175 elems->he_operation))) { 1176 conn->mode = IEEE80211_CONN_MODE_VHT; 1177 link_id_info(sdata, link_id, 1178 "required MCSes not supported, disabling HE\n"); 1179 } 1180 1181 if (conn->mode >= IEEE80211_CONN_MODE_EHT && 1182 !ieee80211_verify_sta_eht_mcs_support(sdata, sband, 1183 elems->eht_operation)) { 1184 conn->mode = IEEE80211_CONN_MODE_HE; 1185 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 1186 conn->bw_limit, 1187 IEEE80211_CONN_BW_LIMIT_160); 1188 link_id_info(sdata, link_id, 1189 "required MCSes not supported, disabling EHT\n"); 1190 } 1191 1192 /* the mode can only decrease, so this must terminate */ 1193 if (ap_mode != conn->mode) { 1194 kfree(elems); 1195 goto again; 1196 } 1197 1198 mlme_link_id_dbg(sdata, link_id, 1199 "connecting with %s mode, max bandwidth %d MHz\n", 1200 ieee80211_conn_mode_str(conn->mode), 1201 20 * (1 << conn->bw_limit)); 1202 1203 if (WARN_ON_ONCE(!cfg80211_chandef_valid(&chanreq->oper))) { 1204 ret = -EINVAL; 1205 goto free; 1206 } 1207 1208 return elems; 1209 free: 1210 kfree(elems); 1211 return ERR_PTR(ret); 1212 } 1213 EXPORT_SYMBOL_IF_MAC80211_KUNIT(ieee80211_determine_chan_mode); 1214 1215 static int ieee80211_config_bw(struct ieee80211_link_data *link, 1216 struct ieee802_11_elems *elems, 1217 bool update, u64 *changed, u16 stype) 1218 { 1219 struct ieee80211_channel *channel = link->conf->chanreq.oper.chan; 1220 struct ieee80211_sub_if_data *sdata = link->sdata; 1221 struct ieee80211_chan_req chanreq = {}; 1222 struct cfg80211_chan_def ap_chandef; 1223 enum ieee80211_conn_mode ap_mode; 1224 const char *frame; 1225 u32 vht_cap_info = 0; 1226 u16 ht_opmode; 1227 int ret; 1228 1229 switch (stype) { 1230 case IEEE80211_STYPE_BEACON: 1231 frame = "beacon"; 1232 break; 1233 case IEEE80211_STYPE_ASSOC_RESP: 1234 frame = "assoc response"; 1235 break; 1236 case IEEE80211_STYPE_REASSOC_RESP: 1237 frame = "reassoc response"; 1238 break; 1239 case IEEE80211_STYPE_ACTION: 1240 /* the only action frame that gets here */ 1241 frame = "ML reconf response"; 1242 break; 1243 default: 1244 return -EINVAL; 1245 } 1246 1247 /* don't track any bandwidth changes in legacy/S1G modes */ 1248 if (link->u.mgd.conn.mode == IEEE80211_CONN_MODE_LEGACY || 1249 link->u.mgd.conn.mode == IEEE80211_CONN_MODE_S1G) 1250 return 0; 1251 1252 if (elems->vht_cap_elem) 1253 vht_cap_info = le32_to_cpu(elems->vht_cap_elem->vht_cap_info); 1254 1255 ap_mode = ieee80211_determine_ap_chan(sdata, channel, vht_cap_info, 1256 elems, true, &link->u.mgd.conn, 1257 &ap_chandef); 1258 1259 if (ap_mode != link->u.mgd.conn.mode) { 1260 link_info(link, 1261 "AP %pM appears to change mode (expected %s, found %s) in %s, disconnect\n", 1262 link->u.mgd.bssid, 1263 ieee80211_conn_mode_str(link->u.mgd.conn.mode), 1264 ieee80211_conn_mode_str(ap_mode), frame); 1265 return -EINVAL; 1266 } 1267 1268 chanreq.oper = ap_chandef; 1269 ieee80211_set_chanreq_ap(sdata, &chanreq, &link->u.mgd.conn, 1270 &ap_chandef); 1271 1272 /* 1273 * if HT operation mode changed store the new one - 1274 * this may be applicable even if channel is identical 1275 */ 1276 if (elems->ht_operation) { 1277 ht_opmode = le16_to_cpu(elems->ht_operation->operation_mode); 1278 if (link->conf->ht_operation_mode != ht_opmode) { 1279 *changed |= BSS_CHANGED_HT; 1280 link->conf->ht_operation_mode = ht_opmode; 1281 } 1282 } 1283 1284 /* 1285 * Downgrade the new channel if we associated with restricted 1286 * bandwidth capabilities. For example, if we associated as a 1287 * 20 MHz STA to a 40 MHz AP (due to regulatory, capabilities 1288 * or config reasons) then switching to a 40 MHz channel now 1289 * won't do us any good -- we couldn't use it with the AP. 1290 */ 1291 while (link->u.mgd.conn.bw_limit < 1292 ieee80211_min_bw_limit_from_chandef(&chanreq.oper)) 1293 ieee80211_chandef_downgrade(&chanreq.oper, NULL); 1294 1295 /* TPE element is not present in (re)assoc/ML reconfig response */ 1296 if (stype == IEEE80211_STYPE_BEACON && 1297 ap_chandef.chan->band == NL80211_BAND_6GHZ && 1298 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HE) { 1299 ieee80211_rearrange_tpe(&elems->tpe, &ap_chandef, 1300 &chanreq.oper); 1301 if (memcmp(&link->conf->tpe, &elems->tpe, sizeof(elems->tpe))) { 1302 link->conf->tpe = elems->tpe; 1303 *changed |= BSS_CHANGED_TPE; 1304 } 1305 } 1306 1307 if (ieee80211_chanreq_identical(&chanreq, &link->conf->chanreq)) 1308 return 0; 1309 1310 link_info(link, 1311 "AP %pM changed bandwidth in %s, new used config is %d.%03d MHz, width %d (%d.%03d/%d MHz)\n", 1312 link->u.mgd.bssid, frame, chanreq.oper.chan->center_freq, 1313 chanreq.oper.chan->freq_offset, chanreq.oper.width, 1314 chanreq.oper.center_freq1, chanreq.oper.freq1_offset, 1315 chanreq.oper.center_freq2); 1316 1317 if (!cfg80211_chandef_valid(&chanreq.oper)) { 1318 sdata_info(sdata, 1319 "AP %pM changed caps/bw in %s in a way we can't support - disconnect\n", 1320 link->u.mgd.bssid, frame); 1321 return -EINVAL; 1322 } 1323 1324 if (!update) { 1325 link->conf->chanreq = chanreq; 1326 return 0; 1327 } 1328 1329 /* 1330 * We're tracking the current AP here, so don't do any further checks 1331 * here. This keeps us from playing ping-pong with regulatory, without 1332 * it the following can happen (for example): 1333 * - connect to an AP with 80 MHz, world regdom allows 80 MHz 1334 * - AP advertises regdom US 1335 * - CRDA loads regdom US with 80 MHz prohibited (old database) 1336 * - we detect an unsupported channel and disconnect 1337 * - disconnect causes CRDA to reload world regdomain and the game 1338 * starts anew. 1339 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) 1340 * 1341 * It seems possible that there are still scenarios with CSA or real 1342 * bandwidth changes where a this could happen, but those cases are 1343 * less common and wouldn't completely prevent using the AP. 1344 */ 1345 1346 ret = ieee80211_link_change_chanreq(link, &chanreq, changed); 1347 if (ret) { 1348 sdata_info(sdata, 1349 "AP %pM changed bandwidth in %s to incompatible one - disconnect\n", 1350 link->u.mgd.bssid, frame); 1351 return ret; 1352 } 1353 1354 cfg80211_schedule_channels_check(&sdata->wdev); 1355 return 0; 1356 } 1357 1358 /* frame sending functions */ 1359 1360 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, 1361 struct sk_buff *skb, u8 ap_ht_param, 1362 struct ieee80211_supported_band *sband, 1363 struct ieee80211_channel *channel, 1364 enum ieee80211_smps_mode smps, 1365 const struct ieee80211_conn_settings *conn) 1366 { 1367 u8 *pos; 1368 u32 flags = channel->flags; 1369 u16 cap; 1370 struct ieee80211_sta_ht_cap ht_cap; 1371 1372 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); 1373 1374 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); 1375 ieee80211_apply_htcap_overrides(sdata, &ht_cap); 1376 1377 /* determine capability flags */ 1378 cap = ht_cap.cap; 1379 1380 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 1381 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 1382 if (flags & IEEE80211_CHAN_NO_HT40PLUS) { 1383 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 1384 cap &= ~IEEE80211_HT_CAP_SGI_40; 1385 } 1386 break; 1387 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 1388 if (flags & IEEE80211_CHAN_NO_HT40MINUS) { 1389 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 1390 cap &= ~IEEE80211_HT_CAP_SGI_40; 1391 } 1392 break; 1393 } 1394 1395 /* 1396 * If 40 MHz was disabled associate as though we weren't 1397 * capable of 40 MHz -- some broken APs will never fall 1398 * back to trying to transmit in 20 MHz. 1399 */ 1400 if (conn->bw_limit <= IEEE80211_CONN_BW_LIMIT_20) { 1401 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 1402 cap &= ~IEEE80211_HT_CAP_SGI_40; 1403 } 1404 1405 /* set SM PS mode properly */ 1406 cap &= ~IEEE80211_HT_CAP_SM_PS; 1407 switch (smps) { 1408 case IEEE80211_SMPS_AUTOMATIC: 1409 case IEEE80211_SMPS_NUM_MODES: 1410 WARN_ON(1); 1411 fallthrough; 1412 case IEEE80211_SMPS_OFF: 1413 cap |= WLAN_HT_CAP_SM_PS_DISABLED << 1414 IEEE80211_HT_CAP_SM_PS_SHIFT; 1415 break; 1416 case IEEE80211_SMPS_STATIC: 1417 cap |= WLAN_HT_CAP_SM_PS_STATIC << 1418 IEEE80211_HT_CAP_SM_PS_SHIFT; 1419 break; 1420 case IEEE80211_SMPS_DYNAMIC: 1421 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << 1422 IEEE80211_HT_CAP_SM_PS_SHIFT; 1423 break; 1424 } 1425 1426 /* reserve and fill IE */ 1427 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); 1428 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); 1429 } 1430 1431 /* This function determines vht capability flags for the association 1432 * and builds the IE. 1433 * Note - the function returns true to own the MU-MIMO capability 1434 */ 1435 static bool ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, 1436 struct sk_buff *skb, 1437 struct ieee80211_supported_band *sband, 1438 struct ieee80211_vht_cap *ap_vht_cap, 1439 const struct ieee80211_conn_settings *conn) 1440 { 1441 struct ieee80211_local *local = sdata->local; 1442 u8 *pos; 1443 u32 cap; 1444 struct ieee80211_sta_vht_cap vht_cap; 1445 u32 mask, ap_bf_sts, our_bf_sts; 1446 bool mu_mimo_owner = false; 1447 1448 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); 1449 1450 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); 1451 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); 1452 1453 /* determine capability flags */ 1454 cap = vht_cap.cap; 1455 1456 if (conn->bw_limit <= IEEE80211_CONN_BW_LIMIT_80) { 1457 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; 1458 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; 1459 } 1460 1461 /* 1462 * Some APs apparently get confused if our capabilities are better 1463 * than theirs, so restrict what we advertise in the assoc request. 1464 */ 1465 if (!ieee80211_hw_check(&local->hw, STRICT)) { 1466 if (!(ap_vht_cap->vht_cap_info & 1467 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) 1468 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 1469 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); 1470 else if (!(ap_vht_cap->vht_cap_info & 1471 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))) 1472 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; 1473 } 1474 1475 /* 1476 * If some other vif is using the MU-MIMO capability we cannot associate 1477 * using MU-MIMO - this will lead to contradictions in the group-id 1478 * mechanism. 1479 * Ownership is defined since association request, in order to avoid 1480 * simultaneous associations with MU-MIMO. 1481 */ 1482 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) { 1483 bool disable_mu_mimo = false; 1484 struct ieee80211_sub_if_data *other; 1485 1486 list_for_each_entry(other, &local->interfaces, list) { 1487 if (other->vif.bss_conf.mu_mimo_owner) { 1488 disable_mu_mimo = true; 1489 break; 1490 } 1491 } 1492 if (disable_mu_mimo) 1493 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; 1494 else 1495 mu_mimo_owner = true; 1496 } 1497 1498 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; 1499 1500 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; 1501 our_bf_sts = cap & mask; 1502 1503 if (ap_bf_sts < our_bf_sts) { 1504 cap &= ~mask; 1505 cap |= ap_bf_sts; 1506 } 1507 1508 /* reserve and fill IE */ 1509 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); 1510 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); 1511 1512 return mu_mimo_owner; 1513 } 1514 1515 static void ieee80211_assoc_add_rates(struct ieee80211_local *local, 1516 struct sk_buff *skb, 1517 enum nl80211_chan_width width, 1518 struct ieee80211_supported_band *sband, 1519 struct ieee80211_mgd_assoc_data *assoc_data) 1520 { 1521 u32 rates; 1522 1523 if (assoc_data->supp_rates_len && 1524 !ieee80211_hw_check(&local->hw, STRICT)) { 1525 /* 1526 * Get all rates supported by the device and the AP as 1527 * some APs don't like getting a superset of their rates 1528 * in the association request (e.g. D-Link DAP 1353 in 1529 * b-only mode)... 1530 */ 1531 ieee80211_parse_bitrates(width, sband, 1532 assoc_data->supp_rates, 1533 assoc_data->supp_rates_len, 1534 &rates); 1535 } else { 1536 /* 1537 * In case AP not provide any supported rates information 1538 * before association, we send information element(s) with 1539 * all rates that we support. 1540 */ 1541 rates = ~0; 1542 } 1543 1544 ieee80211_put_srates_elem(skb, sband, 0, ~rates, 1545 WLAN_EID_SUPP_RATES); 1546 ieee80211_put_srates_elem(skb, sband, 0, ~rates, 1547 WLAN_EID_EXT_SUPP_RATES); 1548 } 1549 1550 static size_t ieee80211_add_before_ht_elems(struct sk_buff *skb, 1551 const u8 *elems, 1552 size_t elems_len, 1553 size_t offset) 1554 { 1555 size_t noffset; 1556 1557 static const u8 before_ht[] = { 1558 WLAN_EID_SSID, 1559 WLAN_EID_SUPP_RATES, 1560 WLAN_EID_EXT_SUPP_RATES, 1561 WLAN_EID_PWR_CAPABILITY, 1562 WLAN_EID_SUPPORTED_CHANNELS, 1563 WLAN_EID_RSN, 1564 WLAN_EID_QOS_CAPA, 1565 WLAN_EID_RRM_ENABLED_CAPABILITIES, 1566 WLAN_EID_MOBILITY_DOMAIN, 1567 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ 1568 WLAN_EID_RIC_DATA, /* reassoc only */ 1569 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1570 }; 1571 static const u8 after_ric[] = { 1572 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1573 WLAN_EID_HT_CAPABILITY, 1574 WLAN_EID_BSS_COEX_2040, 1575 /* luckily this is almost always there */ 1576 WLAN_EID_EXT_CAPABILITY, 1577 WLAN_EID_QOS_TRAFFIC_CAPA, 1578 WLAN_EID_TIM_BCAST_REQ, 1579 WLAN_EID_INTERWORKING, 1580 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1581 WLAN_EID_VHT_CAPABILITY, 1582 WLAN_EID_OPMODE_NOTIF, 1583 }; 1584 1585 if (!elems_len) 1586 return offset; 1587 1588 noffset = ieee80211_ie_split_ric(elems, elems_len, 1589 before_ht, 1590 ARRAY_SIZE(before_ht), 1591 after_ric, 1592 ARRAY_SIZE(after_ric), 1593 offset); 1594 skb_put_data(skb, elems + offset, noffset - offset); 1595 1596 return noffset; 1597 } 1598 1599 static size_t ieee80211_add_before_vht_elems(struct sk_buff *skb, 1600 const u8 *elems, 1601 size_t elems_len, 1602 size_t offset) 1603 { 1604 static const u8 before_vht[] = { 1605 /* 1606 * no need to list the ones split off before HT 1607 * or generated here 1608 */ 1609 WLAN_EID_BSS_COEX_2040, 1610 WLAN_EID_EXT_CAPABILITY, 1611 WLAN_EID_QOS_TRAFFIC_CAPA, 1612 WLAN_EID_TIM_BCAST_REQ, 1613 WLAN_EID_INTERWORKING, 1614 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1615 }; 1616 size_t noffset; 1617 1618 if (!elems_len) 1619 return offset; 1620 1621 /* RIC already taken care of in ieee80211_add_before_ht_elems() */ 1622 noffset = ieee80211_ie_split(elems, elems_len, 1623 before_vht, ARRAY_SIZE(before_vht), 1624 offset); 1625 skb_put_data(skb, elems + offset, noffset - offset); 1626 1627 return noffset; 1628 } 1629 1630 static size_t ieee80211_add_before_he_elems(struct sk_buff *skb, 1631 const u8 *elems, 1632 size_t elems_len, 1633 size_t offset) 1634 { 1635 static const u8 before_he[] = { 1636 /* 1637 * no need to list the ones split off before VHT 1638 * or generated here 1639 */ 1640 WLAN_EID_OPMODE_NOTIF, 1641 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE, 1642 /* 11ai elements */ 1643 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION, 1644 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY, 1645 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM, 1646 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER, 1647 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN, 1648 /* TODO: add 11ah/11aj/11ak elements */ 1649 }; 1650 size_t noffset; 1651 1652 if (!elems_len) 1653 return offset; 1654 1655 /* RIC already taken care of in ieee80211_add_before_ht_elems() */ 1656 noffset = ieee80211_ie_split(elems, elems_len, 1657 before_he, ARRAY_SIZE(before_he), 1658 offset); 1659 skb_put_data(skb, elems + offset, noffset - offset); 1660 1661 return noffset; 1662 } 1663 1664 static size_t ieee80211_add_before_reg_conn(struct sk_buff *skb, 1665 const u8 *elems, size_t elems_len, 1666 size_t offset) 1667 { 1668 static const u8 before_reg_conn[] = { 1669 /* 1670 * no need to list the ones split off before HE 1671 * or generated here 1672 */ 1673 WLAN_EID_EXTENSION, WLAN_EID_EXT_DH_PARAMETER, 1674 WLAN_EID_EXTENSION, WLAN_EID_EXT_KNOWN_STA_IDENTIFCATION, 1675 }; 1676 size_t noffset; 1677 1678 if (!elems_len) 1679 return offset; 1680 1681 noffset = ieee80211_ie_split(elems, elems_len, before_reg_conn, 1682 ARRAY_SIZE(before_reg_conn), offset); 1683 skb_put_data(skb, elems + offset, noffset - offset); 1684 1685 return noffset; 1686 } 1687 1688 #define PRESENT_ELEMS_MAX 8 1689 #define PRESENT_ELEM_EXT_OFFS 0x100 1690 1691 static void 1692 ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata, 1693 struct sk_buff *skb, u16 capab, 1694 const struct element *ext_capa, 1695 const u16 *present_elems, 1696 struct ieee80211_mgd_assoc_data *assoc_data); 1697 1698 static size_t 1699 ieee80211_add_link_elems(struct ieee80211_sub_if_data *sdata, 1700 struct sk_buff *skb, u16 *capab, 1701 const struct element *ext_capa, 1702 const u8 *extra_elems, 1703 size_t extra_elems_len, 1704 unsigned int link_id, 1705 struct ieee80211_link_data *link, 1706 u16 *present_elems, 1707 struct ieee80211_mgd_assoc_data *assoc_data) 1708 { 1709 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 1710 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 1711 struct ieee80211_channel *chan = cbss->channel; 1712 const struct ieee80211_sband_iftype_data *iftd; 1713 struct ieee80211_local *local = sdata->local; 1714 struct ieee80211_supported_band *sband; 1715 enum nl80211_chan_width width = NL80211_CHAN_WIDTH_20; 1716 struct ieee80211_chanctx_conf *chanctx_conf; 1717 enum ieee80211_smps_mode smps_mode; 1718 u16 orig_capab = *capab; 1719 size_t offset = 0; 1720 int present_elems_len = 0; 1721 u8 *pos; 1722 int i; 1723 1724 #define ADD_PRESENT_ELEM(id) do { \ 1725 /* need a last for termination - we use 0 == SSID */ \ 1726 if (!WARN_ON(present_elems_len >= PRESENT_ELEMS_MAX - 1)) \ 1727 present_elems[present_elems_len++] = (id); \ 1728 } while (0) 1729 #define ADD_PRESENT_EXT_ELEM(id) ADD_PRESENT_ELEM(PRESENT_ELEM_EXT_OFFS | (id)) 1730 1731 if (link) 1732 smps_mode = link->smps_mode; 1733 else if (sdata->u.mgd.powersave) 1734 smps_mode = IEEE80211_SMPS_DYNAMIC; 1735 else 1736 smps_mode = IEEE80211_SMPS_OFF; 1737 1738 if (link) { 1739 /* 1740 * 5/10 MHz scenarios are only viable without MLO, in which 1741 * case this pointer should be used ... All of this is a bit 1742 * unclear though, not sure this even works at all. 1743 */ 1744 rcu_read_lock(); 1745 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1746 if (chanctx_conf) 1747 width = chanctx_conf->def.width; 1748 rcu_read_unlock(); 1749 } 1750 1751 sband = local->hw.wiphy->bands[chan->band]; 1752 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 1753 1754 if (sband->band == NL80211_BAND_2GHZ) { 1755 *capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 1756 *capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 1757 } 1758 1759 if ((cbss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && 1760 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT)) 1761 *capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; 1762 1763 if (sband->band != NL80211_BAND_S1GHZ) 1764 ieee80211_assoc_add_rates(local, skb, width, sband, assoc_data); 1765 1766 if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT || 1767 *capab & WLAN_CAPABILITY_RADIO_MEASURE) { 1768 struct cfg80211_chan_def chandef = { 1769 .width = width, 1770 .chan = chan, 1771 }; 1772 1773 pos = skb_put(skb, 4); 1774 *pos++ = WLAN_EID_PWR_CAPABILITY; 1775 *pos++ = 2; 1776 *pos++ = 0; /* min tx power */ 1777 /* max tx power */ 1778 *pos++ = ieee80211_chandef_max_power(&chandef); 1779 ADD_PRESENT_ELEM(WLAN_EID_PWR_CAPABILITY); 1780 } 1781 1782 /* 1783 * Per spec, we shouldn't include the list of channels if we advertise 1784 * support for extended channel switching, but we've always done that; 1785 * (for now?) apply this restriction only on the (new) 6 GHz band. 1786 */ 1787 if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT && 1788 (sband->band != NL80211_BAND_6GHZ || 1789 !ext_capa || ext_capa->datalen < 1 || 1790 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) { 1791 /* TODO: get this in reg domain format */ 1792 pos = skb_put(skb, 2 * sband->n_channels + 2); 1793 *pos++ = WLAN_EID_SUPPORTED_CHANNELS; 1794 *pos++ = 2 * sband->n_channels; 1795 for (i = 0; i < sband->n_channels; i++) { 1796 int cf = sband->channels[i].center_freq; 1797 1798 *pos++ = ieee80211_frequency_to_channel(cf); 1799 *pos++ = 1; /* one channel in the subband*/ 1800 } 1801 ADD_PRESENT_ELEM(WLAN_EID_SUPPORTED_CHANNELS); 1802 } 1803 1804 /* if present, add any custom IEs that go before HT */ 1805 offset = ieee80211_add_before_ht_elems(skb, extra_elems, 1806 extra_elems_len, 1807 offset); 1808 1809 if (sband->band != NL80211_BAND_6GHZ && 1810 assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_HT) { 1811 ieee80211_add_ht_ie(sdata, skb, 1812 assoc_data->link[link_id].ap_ht_param, 1813 sband, chan, smps_mode, 1814 &assoc_data->link[link_id].conn); 1815 ADD_PRESENT_ELEM(WLAN_EID_HT_CAPABILITY); 1816 } 1817 1818 /* if present, add any custom IEs that go before VHT */ 1819 offset = ieee80211_add_before_vht_elems(skb, extra_elems, 1820 extra_elems_len, 1821 offset); 1822 1823 if (sband->band != NL80211_BAND_6GHZ && 1824 assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_VHT && 1825 sband->vht_cap.vht_supported) { 1826 bool mu_mimo_owner = 1827 ieee80211_add_vht_ie(sdata, skb, sband, 1828 &assoc_data->link[link_id].ap_vht_cap, 1829 &assoc_data->link[link_id].conn); 1830 1831 if (link) 1832 link->conf->mu_mimo_owner = mu_mimo_owner; 1833 ADD_PRESENT_ELEM(WLAN_EID_VHT_CAPABILITY); 1834 } 1835 1836 /* if present, add any custom IEs that go before HE */ 1837 offset = ieee80211_add_before_he_elems(skb, extra_elems, 1838 extra_elems_len, 1839 offset); 1840 1841 if (assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_HE) { 1842 ieee80211_put_he_cap(skb, sdata, sband, 1843 &assoc_data->link[link_id].conn); 1844 ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_HE_CAPABILITY); 1845 ieee80211_put_he_6ghz_cap(skb, sdata, smps_mode); 1846 } 1847 1848 /* 1849 * if present, add any custom IEs that go before regulatory 1850 * connectivity element 1851 */ 1852 offset = ieee80211_add_before_reg_conn(skb, extra_elems, 1853 extra_elems_len, offset); 1854 1855 if (sband->band == NL80211_BAND_6GHZ) { 1856 /* 1857 * as per Section E.2.7 of IEEE 802.11 REVme D7.0, non-AP STA 1858 * capable of operating on the 6 GHz band shall transmit 1859 * regulatory connectivity element. 1860 */ 1861 ieee80211_put_reg_conn(skb, chan->flags); 1862 } 1863 1864 /* 1865 * careful - need to know about all the present elems before 1866 * calling ieee80211_assoc_add_ml_elem(), so add this one if 1867 * we're going to put it after the ML element 1868 */ 1869 if (assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_EHT) 1870 ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_EHT_CAPABILITY); 1871 1872 if (link_id == assoc_data->assoc_link_id) 1873 ieee80211_assoc_add_ml_elem(sdata, skb, orig_capab, ext_capa, 1874 present_elems, assoc_data); 1875 1876 /* crash if somebody gets it wrong */ 1877 present_elems = NULL; 1878 1879 if (assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_EHT) 1880 ieee80211_put_eht_cap(skb, sdata, sband, 1881 &assoc_data->link[link_id].conn); 1882 1883 if (sband->band == NL80211_BAND_S1GHZ) { 1884 ieee80211_add_aid_request_ie(sdata, skb); 1885 ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb); 1886 } 1887 1888 if (iftd && iftd->vendor_elems.data && iftd->vendor_elems.len) 1889 skb_put_data(skb, iftd->vendor_elems.data, iftd->vendor_elems.len); 1890 1891 return offset; 1892 } 1893 1894 static void ieee80211_add_non_inheritance_elem(struct sk_buff *skb, 1895 const u16 *outer, 1896 const u16 *inner) 1897 { 1898 unsigned int skb_len = skb->len; 1899 bool at_extension = false; 1900 bool added = false; 1901 int i, j; 1902 u8 *len, *list_len = NULL; 1903 1904 skb_put_u8(skb, WLAN_EID_EXTENSION); 1905 len = skb_put(skb, 1); 1906 skb_put_u8(skb, WLAN_EID_EXT_NON_INHERITANCE); 1907 1908 for (i = 0; i < PRESENT_ELEMS_MAX && outer[i]; i++) { 1909 u16 elem = outer[i]; 1910 bool have_inner = false; 1911 1912 /* should at least be sorted in the sense of normal -> ext */ 1913 WARN_ON(at_extension && elem < PRESENT_ELEM_EXT_OFFS); 1914 1915 /* switch to extension list */ 1916 if (!at_extension && elem >= PRESENT_ELEM_EXT_OFFS) { 1917 at_extension = true; 1918 if (!list_len) 1919 skb_put_u8(skb, 0); 1920 list_len = NULL; 1921 } 1922 1923 for (j = 0; j < PRESENT_ELEMS_MAX && inner[j]; j++) { 1924 if (elem == inner[j]) { 1925 have_inner = true; 1926 break; 1927 } 1928 } 1929 1930 if (have_inner) 1931 continue; 1932 1933 if (!list_len) { 1934 list_len = skb_put(skb, 1); 1935 *list_len = 0; 1936 } 1937 *list_len += 1; 1938 skb_put_u8(skb, (u8)elem); 1939 added = true; 1940 } 1941 1942 /* if we added a list but no extension list, make a zero-len one */ 1943 if (added && (!at_extension || !list_len)) 1944 skb_put_u8(skb, 0); 1945 1946 /* if nothing added remove extension element completely */ 1947 if (!added) 1948 skb_trim(skb, skb_len); 1949 else 1950 *len = skb->len - skb_len - 2; 1951 } 1952 1953 static void 1954 ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata, 1955 struct sk_buff *skb, u16 capab, 1956 const struct element *ext_capa, 1957 const u16 *outer_present_elems, 1958 struct ieee80211_mgd_assoc_data *assoc_data) 1959 { 1960 struct ieee80211_local *local = sdata->local; 1961 struct ieee80211_multi_link_elem *ml_elem; 1962 struct ieee80211_mle_basic_common_info *common; 1963 const struct wiphy_iftype_ext_capab *ift_ext_capa; 1964 __le16 eml_capa = 0, mld_capa_ops = 0; 1965 unsigned int link_id; 1966 u8 *ml_elem_len; 1967 void *capab_pos; 1968 1969 if (!ieee80211_vif_is_mld(&sdata->vif)) 1970 return; 1971 1972 ift_ext_capa = cfg80211_get_iftype_ext_capa(local->hw.wiphy, 1973 ieee80211_vif_type_p2p(&sdata->vif)); 1974 if (ift_ext_capa) { 1975 eml_capa = cpu_to_le16(ift_ext_capa->eml_capabilities); 1976 mld_capa_ops = cpu_to_le16(ift_ext_capa->mld_capa_and_ops); 1977 } 1978 1979 skb_put_u8(skb, WLAN_EID_EXTENSION); 1980 ml_elem_len = skb_put(skb, 1); 1981 skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK); 1982 ml_elem = skb_put(skb, sizeof(*ml_elem)); 1983 ml_elem->control = 1984 cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC | 1985 IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP); 1986 common = skb_put(skb, sizeof(*common)); 1987 common->len = sizeof(*common) + 1988 2; /* MLD capa/ops */ 1989 memcpy(common->mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1990 1991 /* add EML_CAPA only if needed, see Draft P802.11be_D2.1, 35.3.17 */ 1992 if (eml_capa & 1993 cpu_to_le16((IEEE80211_EML_CAP_EMLSR_SUPP | 1994 IEEE80211_EML_CAP_EMLMR_SUPPORT))) { 1995 common->len += 2; /* EML capabilities */ 1996 ml_elem->control |= 1997 cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EML_CAPA); 1998 skb_put_data(skb, &eml_capa, sizeof(eml_capa)); 1999 } 2000 skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops)); 2001 2002 if (assoc_data->ext_mld_capa_ops) { 2003 ml_elem->control |= 2004 cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP); 2005 common->len += 2; 2006 skb_put_data(skb, &assoc_data->ext_mld_capa_ops, 2007 sizeof(assoc_data->ext_mld_capa_ops)); 2008 } 2009 2010 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 2011 u16 link_present_elems[PRESENT_ELEMS_MAX] = {}; 2012 const u8 *extra_elems; 2013 size_t extra_elems_len; 2014 size_t extra_used; 2015 u8 *subelem_len = NULL; 2016 __le16 ctrl; 2017 2018 if (!assoc_data->link[link_id].bss || 2019 link_id == assoc_data->assoc_link_id) 2020 continue; 2021 2022 extra_elems = assoc_data->link[link_id].elems; 2023 extra_elems_len = assoc_data->link[link_id].elems_len; 2024 2025 skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE); 2026 subelem_len = skb_put(skb, 1); 2027 2028 ctrl = cpu_to_le16(link_id | 2029 IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE | 2030 IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT); 2031 skb_put_data(skb, &ctrl, sizeof(ctrl)); 2032 skb_put_u8(skb, 1 + ETH_ALEN); /* STA Info Length */ 2033 skb_put_data(skb, assoc_data->link[link_id].addr, 2034 ETH_ALEN); 2035 /* 2036 * Now add the contents of the (re)association request, 2037 * but the "listen interval" and "current AP address" 2038 * (if applicable) are skipped. So we only have 2039 * the capability field (remember the position and fill 2040 * later), followed by the elements added below by 2041 * calling ieee80211_add_link_elems(). 2042 */ 2043 capab_pos = skb_put(skb, 2); 2044 2045 extra_used = ieee80211_add_link_elems(sdata, skb, &capab, 2046 ext_capa, 2047 extra_elems, 2048 extra_elems_len, 2049 link_id, NULL, 2050 link_present_elems, 2051 assoc_data); 2052 if (extra_elems) 2053 skb_put_data(skb, extra_elems + extra_used, 2054 extra_elems_len - extra_used); 2055 2056 put_unaligned_le16(capab, capab_pos); 2057 2058 ieee80211_add_non_inheritance_elem(skb, outer_present_elems, 2059 link_present_elems); 2060 2061 ieee80211_fragment_element(skb, subelem_len, 2062 IEEE80211_MLE_SUBELEM_FRAGMENT); 2063 } 2064 2065 ieee80211_fragment_element(skb, ml_elem_len, WLAN_EID_FRAGMENT); 2066 } 2067 2068 static int 2069 ieee80211_link_common_elems_size(struct ieee80211_sub_if_data *sdata, 2070 enum nl80211_iftype iftype, 2071 struct cfg80211_bss *cbss, 2072 size_t elems_len) 2073 { 2074 struct ieee80211_local *local = sdata->local; 2075 const struct ieee80211_sband_iftype_data *iftd; 2076 struct ieee80211_supported_band *sband; 2077 size_t size = 0; 2078 2079 if (!cbss) 2080 return size; 2081 2082 sband = local->hw.wiphy->bands[cbss->channel->band]; 2083 2084 /* add STA profile elements length */ 2085 size += elems_len; 2086 2087 /* and supported rates length */ 2088 size += 4 + sband->n_bitrates; 2089 2090 /* supported channels */ 2091 size += 2 + 2 * sband->n_channels; 2092 2093 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2094 if (iftd) 2095 size += iftd->vendor_elems.len; 2096 2097 /* power capability */ 2098 size += 4; 2099 2100 /* HT, VHT, HE, EHT */ 2101 size += 2 + sizeof(struct ieee80211_ht_cap); 2102 size += 2 + sizeof(struct ieee80211_vht_cap); 2103 size += 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + 2104 sizeof(struct ieee80211_he_mcs_nss_supp) + 2105 IEEE80211_HE_PPE_THRES_MAX_LEN; 2106 2107 if (sband->band == NL80211_BAND_6GHZ) 2108 size += 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa); 2109 2110 size += 2 + 1 + sizeof(struct ieee80211_eht_cap_elem) + 2111 sizeof(struct ieee80211_eht_mcs_nss_supp) + 2112 IEEE80211_EHT_PPE_THRES_MAX_LEN; 2113 2114 return size; 2115 } 2116 2117 static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) 2118 { 2119 struct ieee80211_local *local = sdata->local; 2120 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2121 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; 2122 struct ieee80211_link_data *link; 2123 struct sk_buff *skb; 2124 struct ieee80211_mgmt *mgmt; 2125 u8 *pos, qos_info, *ie_start; 2126 size_t offset, noffset; 2127 u16 capab = 0, link_capab; 2128 __le16 listen_int; 2129 struct element *ext_capa = NULL; 2130 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2131 struct ieee80211_prep_tx_info info = {}; 2132 unsigned int link_id, n_links = 0; 2133 u16 present_elems[PRESENT_ELEMS_MAX] = {}; 2134 void *capab_pos; 2135 size_t size; 2136 int ret; 2137 2138 /* we know it's writable, cast away the const */ 2139 if (assoc_data->ie_len) 2140 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, 2141 assoc_data->ie, 2142 assoc_data->ie_len); 2143 2144 lockdep_assert_wiphy(sdata->local->hw.wiphy); 2145 2146 size = local->hw.extra_tx_headroom + 2147 sizeof(*mgmt) + /* bit too much but doesn't matter */ 2148 2 + assoc_data->ssid_len + /* SSID */ 2149 assoc_data->ie_len + /* extra IEs */ 2150 (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) + 2151 9; /* WMM */ 2152 2153 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 2154 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 2155 size_t elems_len = assoc_data->link[link_id].elems_len; 2156 2157 if (!cbss) 2158 continue; 2159 2160 n_links++; 2161 2162 size += ieee80211_link_common_elems_size(sdata, iftype, cbss, 2163 elems_len); 2164 2165 /* non-inheritance element */ 2166 size += 2 + 2 + PRESENT_ELEMS_MAX; 2167 2168 /* should be the same across all BSSes */ 2169 if (cbss->capability & WLAN_CAPABILITY_PRIVACY) 2170 capab |= WLAN_CAPABILITY_PRIVACY; 2171 } 2172 2173 if (ieee80211_vif_is_mld(&sdata->vif)) { 2174 /* consider the multi-link element with STA profile */ 2175 size += sizeof(struct ieee80211_multi_link_elem); 2176 /* max common info field in basic multi-link element */ 2177 size += sizeof(struct ieee80211_mle_basic_common_info) + 2178 2 + /* capa & op */ 2179 2 + /* ext capa & op */ 2180 2; /* EML capa */ 2181 2182 /* 2183 * The capability elements were already considered above; 2184 * note this over-estimates a bit because there's no 2185 * STA profile for the assoc link. 2186 */ 2187 size += (n_links - 1) * 2188 (1 + 1 + /* subelement ID/length */ 2189 2 + /* STA control */ 2190 1 + ETH_ALEN + 2 /* STA Info field */); 2191 } 2192 2193 link = sdata_dereference(sdata->link[assoc_data->assoc_link_id], sdata); 2194 if (WARN_ON(!link)) 2195 return -EINVAL; 2196 2197 if (WARN_ON(!assoc_data->link[assoc_data->assoc_link_id].bss)) 2198 return -EINVAL; 2199 2200 skb = alloc_skb(size, GFP_KERNEL); 2201 if (!skb) 2202 return -ENOMEM; 2203 2204 skb_reserve(skb, local->hw.extra_tx_headroom); 2205 2206 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) 2207 capab |= WLAN_CAPABILITY_RADIO_MEASURE; 2208 2209 /* Set MBSSID support for HE AP if needed */ 2210 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) && 2211 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HE && 2212 ext_capa && ext_capa->datalen >= 3) 2213 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; 2214 2215 mgmt = skb_put_zero(skb, 24); 2216 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 2217 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2218 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 2219 2220 listen_int = cpu_to_le16(assoc_data->s1g ? 2221 ieee80211_encode_usf(local->hw.conf.listen_interval) : 2222 local->hw.conf.listen_interval); 2223 if (!is_zero_ether_addr(assoc_data->prev_ap_addr)) { 2224 skb_put(skb, 10); 2225 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2226 IEEE80211_STYPE_REASSOC_REQ); 2227 capab_pos = &mgmt->u.reassoc_req.capab_info; 2228 mgmt->u.reassoc_req.listen_interval = listen_int; 2229 memcpy(mgmt->u.reassoc_req.current_ap, 2230 assoc_data->prev_ap_addr, ETH_ALEN); 2231 info.subtype = IEEE80211_STYPE_REASSOC_REQ; 2232 } else { 2233 skb_put(skb, 4); 2234 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2235 IEEE80211_STYPE_ASSOC_REQ); 2236 capab_pos = &mgmt->u.assoc_req.capab_info; 2237 mgmt->u.assoc_req.listen_interval = listen_int; 2238 info.subtype = IEEE80211_STYPE_ASSOC_REQ; 2239 } 2240 2241 /* SSID */ 2242 pos = skb_put(skb, 2 + assoc_data->ssid_len); 2243 ie_start = pos; 2244 *pos++ = WLAN_EID_SSID; 2245 *pos++ = assoc_data->ssid_len; 2246 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); 2247 2248 /* 2249 * This bit is technically reserved, so it shouldn't matter for either 2250 * the AP or us, but it also means we shouldn't set it. However, we've 2251 * always set it in the past, and apparently some EHT APs check that 2252 * we don't set it. To avoid interoperability issues with old APs that 2253 * for some reason check it and want it to be set, set the bit for all 2254 * pre-EHT connections as we used to do. 2255 */ 2256 if (link->u.mgd.conn.mode < IEEE80211_CONN_MODE_EHT && 2257 !ieee80211_hw_check(&local->hw, STRICT)) 2258 capab |= WLAN_CAPABILITY_ESS; 2259 2260 /* add the elements for the assoc (main) link */ 2261 link_capab = capab; 2262 offset = ieee80211_add_link_elems(sdata, skb, &link_capab, 2263 ext_capa, 2264 assoc_data->ie, 2265 assoc_data->ie_len, 2266 assoc_data->assoc_link_id, link, 2267 present_elems, assoc_data); 2268 put_unaligned_le16(link_capab, capab_pos); 2269 2270 /* if present, add any custom non-vendor IEs */ 2271 if (assoc_data->ie_len) { 2272 noffset = ieee80211_ie_split_vendor(assoc_data->ie, 2273 assoc_data->ie_len, 2274 offset); 2275 skb_put_data(skb, assoc_data->ie + offset, noffset - offset); 2276 offset = noffset; 2277 } 2278 2279 if (assoc_data->wmm) { 2280 if (assoc_data->uapsd) { 2281 qos_info = ifmgd->uapsd_queues; 2282 qos_info |= (ifmgd->uapsd_max_sp_len << 2283 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); 2284 } else { 2285 qos_info = 0; 2286 } 2287 2288 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); 2289 } 2290 2291 /* add any remaining custom (i.e. vendor specific here) IEs */ 2292 if (assoc_data->ie_len) { 2293 noffset = assoc_data->ie_len; 2294 skb_put_data(skb, assoc_data->ie + offset, noffset - offset); 2295 } 2296 2297 if (assoc_data->fils_kek_len) { 2298 ret = fils_encrypt_assoc_req(skb, assoc_data); 2299 if (ret < 0) { 2300 dev_kfree_skb(skb); 2301 return ret; 2302 } 2303 } 2304 2305 pos = skb_tail_pointer(skb); 2306 kfree(ifmgd->assoc_req_ies); 2307 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC); 2308 if (!ifmgd->assoc_req_ies) { 2309 dev_kfree_skb(skb); 2310 return -ENOMEM; 2311 } 2312 2313 ifmgd->assoc_req_ies_len = pos - ie_start; 2314 2315 info.link_id = assoc_data->assoc_link_id; 2316 drv_mgd_prepare_tx(local, sdata, &info); 2317 2318 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 2319 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 2320 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 2321 IEEE80211_TX_INTFL_MLME_CONN_TX; 2322 ieee80211_tx_skb(sdata, skb); 2323 2324 return 0; 2325 } 2326 2327 void ieee80211_send_pspoll(struct ieee80211_local *local, 2328 struct ieee80211_sub_if_data *sdata) 2329 { 2330 struct ieee80211_pspoll *pspoll; 2331 struct sk_buff *skb; 2332 2333 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); 2334 if (!skb) 2335 return; 2336 2337 pspoll = (struct ieee80211_pspoll *) skb->data; 2338 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 2339 2340 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 2341 ieee80211_tx_skb(sdata, skb); 2342 } 2343 2344 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2345 struct ieee80211_sub_if_data *sdata, 2346 bool powersave) 2347 { 2348 struct sk_buff *skb; 2349 struct ieee80211_hdr_3addr *nullfunc; 2350 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2351 2352 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, -1, 2353 !ieee80211_hw_check(&local->hw, 2354 DOESNT_SUPPORT_QOS_NDP)); 2355 if (!skb) 2356 return; 2357 2358 nullfunc = (struct ieee80211_hdr_3addr *) skb->data; 2359 if (powersave) 2360 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 2361 2362 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 2363 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2364 2365 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 2366 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 2367 2368 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) 2369 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; 2370 2371 ieee80211_tx_skb(sdata, skb); 2372 } 2373 2374 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2375 struct ieee80211_sub_if_data *sdata) 2376 { 2377 struct sk_buff *skb; 2378 struct ieee80211_hdr *nullfunc; 2379 __le16 fc; 2380 2381 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 2382 return; 2383 2384 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); 2385 if (!skb) 2386 return; 2387 2388 skb_reserve(skb, local->hw.extra_tx_headroom); 2389 2390 nullfunc = skb_put_zero(skb, 30); 2391 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | 2392 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); 2393 nullfunc->frame_control = fc; 2394 memcpy(nullfunc->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 2395 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 2396 memcpy(nullfunc->addr3, sdata->deflink.u.mgd.bssid, ETH_ALEN); 2397 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); 2398 2399 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 2400 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; 2401 ieee80211_tx_skb(sdata, skb); 2402 } 2403 2404 /* spectrum management related things */ 2405 static void ieee80211_csa_switch_work(struct wiphy *wiphy, 2406 struct wiphy_work *work) 2407 { 2408 struct ieee80211_link_data *link = 2409 container_of(work, struct ieee80211_link_data, 2410 u.mgd.csa.switch_work.work); 2411 struct ieee80211_sub_if_data *sdata = link->sdata; 2412 struct ieee80211_local *local = sdata->local; 2413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2414 int ret; 2415 2416 if (!ieee80211_sdata_running(sdata)) 2417 return; 2418 2419 lockdep_assert_wiphy(local->hw.wiphy); 2420 2421 if (!ifmgd->associated) 2422 return; 2423 2424 if (!link->conf->csa_active) 2425 return; 2426 2427 /* 2428 * If the link isn't active (now), we cannot wait for beacons, won't 2429 * have a reserved chanctx, etc. Just switch over the chandef and 2430 * update cfg80211 directly. 2431 */ 2432 if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) { 2433 struct link_sta_info *link_sta; 2434 struct sta_info *ap_sta; 2435 2436 link->conf->chanreq = link->csa.chanreq; 2437 cfg80211_ch_switch_notify(sdata->dev, &link->csa.chanreq.oper, 2438 link->link_id); 2439 link->conf->csa_active = false; 2440 2441 ap_sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 2442 if (WARN_ON(!ap_sta)) 2443 return; 2444 2445 link_sta = wiphy_dereference(wiphy, 2446 ap_sta->link[link->link_id]); 2447 if (WARN_ON(!link_sta)) 2448 return; 2449 2450 link_sta->pub->bandwidth = 2451 _ieee80211_sta_cur_vht_bw(link_sta, 2452 &link->csa.chanreq.oper); 2453 return; 2454 } 2455 2456 /* 2457 * using reservation isn't immediate as it may be deferred until later 2458 * with multi-vif. once reservation is complete it will re-schedule the 2459 * work with no reserved_chanctx so verify chandef to check if it 2460 * completed successfully 2461 */ 2462 2463 if (link->reserved_chanctx) { 2464 /* 2465 * with multi-vif csa driver may call ieee80211_csa_finish() 2466 * many times while waiting for other interfaces to use their 2467 * reservations 2468 */ 2469 if (link->reserved_ready) 2470 return; 2471 2472 ret = ieee80211_link_use_reserved_context(link); 2473 if (ret) { 2474 link_info(link, 2475 "failed to use reserved channel context, disconnecting (err=%d)\n", 2476 ret); 2477 wiphy_work_queue(sdata->local->hw.wiphy, 2478 &ifmgd->csa_connection_drop_work); 2479 } 2480 return; 2481 } 2482 2483 if (!ieee80211_chanreq_identical(&link->conf->chanreq, 2484 &link->csa.chanreq)) { 2485 link_info(link, 2486 "failed to finalize channel switch, disconnecting\n"); 2487 wiphy_work_queue(sdata->local->hw.wiphy, 2488 &ifmgd->csa_connection_drop_work); 2489 return; 2490 } 2491 2492 link->u.mgd.csa.waiting_bcn = true; 2493 2494 /* apply new TPE restrictions immediately on the new channel */ 2495 if (link->u.mgd.csa.ap_chandef.chan->band == NL80211_BAND_6GHZ && 2496 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HE) { 2497 ieee80211_rearrange_tpe(&link->u.mgd.csa.tpe, 2498 &link->u.mgd.csa.ap_chandef, 2499 &link->conf->chanreq.oper); 2500 if (memcmp(&link->conf->tpe, &link->u.mgd.csa.tpe, 2501 sizeof(link->u.mgd.csa.tpe))) { 2502 link->conf->tpe = link->u.mgd.csa.tpe; 2503 ieee80211_link_info_change_notify(sdata, link, 2504 BSS_CHANGED_TPE); 2505 } 2506 } 2507 2508 /* 2509 * It is not necessary to reset these timers if any link does not 2510 * have an active CSA and that link still receives the beacons 2511 * when other links have active CSA. 2512 */ 2513 for_each_link_data(sdata, link) { 2514 if (!link->conf->csa_active) 2515 return; 2516 } 2517 2518 /* 2519 * Reset the beacon monitor and connection monitor timers when CSA 2520 * is active for all links in MLO when channel switch occurs in all 2521 * the links. 2522 */ 2523 ieee80211_sta_reset_beacon_monitor(sdata); 2524 ieee80211_sta_reset_conn_monitor(sdata); 2525 } 2526 2527 static void ieee80211_chswitch_post_beacon(struct ieee80211_link_data *link) 2528 { 2529 struct ieee80211_sub_if_data *sdata = link->sdata; 2530 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2531 int ret; 2532 2533 lockdep_assert_wiphy(sdata->local->hw.wiphy); 2534 2535 WARN_ON(!link->conf->csa_active); 2536 2537 ieee80211_vif_unblock_queues_csa(sdata); 2538 2539 link->conf->csa_active = false; 2540 link->u.mgd.csa.blocked_tx = false; 2541 link->u.mgd.csa.waiting_bcn = false; 2542 2543 ret = drv_post_channel_switch(link); 2544 if (ret) { 2545 link_info(link, 2546 "driver post channel switch failed, disconnecting\n"); 2547 wiphy_work_queue(sdata->local->hw.wiphy, 2548 &ifmgd->csa_connection_drop_work); 2549 return; 2550 } 2551 2552 cfg80211_ch_switch_notify(sdata->dev, &link->conf->chanreq.oper, 2553 link->link_id); 2554 } 2555 2556 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success, 2557 unsigned int link_id) 2558 { 2559 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2560 2561 trace_api_chswitch_done(sdata, success, link_id); 2562 2563 rcu_read_lock(); 2564 2565 if (!success) { 2566 sdata_info(sdata, 2567 "driver channel switch failed (link %d), disconnecting\n", 2568 link_id); 2569 wiphy_work_queue(sdata->local->hw.wiphy, 2570 &sdata->u.mgd.csa_connection_drop_work); 2571 } else { 2572 struct ieee80211_link_data *link = 2573 rcu_dereference(sdata->link[link_id]); 2574 2575 if (WARN_ON(!link)) { 2576 rcu_read_unlock(); 2577 return; 2578 } 2579 2580 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 2581 &link->u.mgd.csa.switch_work, 0); 2582 } 2583 2584 rcu_read_unlock(); 2585 } 2586 EXPORT_SYMBOL(ieee80211_chswitch_done); 2587 2588 static void 2589 ieee80211_sta_abort_chanswitch(struct ieee80211_link_data *link) 2590 { 2591 struct ieee80211_sub_if_data *sdata = link->sdata; 2592 struct ieee80211_local *local = sdata->local; 2593 2594 lockdep_assert_wiphy(local->hw.wiphy); 2595 2596 if (!local->ops->abort_channel_switch) 2597 return; 2598 2599 if (rcu_access_pointer(link->conf->chanctx_conf)) 2600 ieee80211_link_unreserve_chanctx(link); 2601 2602 ieee80211_vif_unblock_queues_csa(sdata); 2603 2604 link->conf->csa_active = false; 2605 link->u.mgd.csa.blocked_tx = false; 2606 2607 drv_abort_channel_switch(link); 2608 } 2609 2610 struct sta_csa_rnr_iter_data { 2611 struct ieee80211_link_data *link; 2612 struct ieee80211_channel *chan; 2613 u8 mld_id; 2614 }; 2615 2616 static enum cfg80211_rnr_iter_ret 2617 ieee80211_sta_csa_rnr_iter(void *_data, u8 type, 2618 const struct ieee80211_neighbor_ap_info *info, 2619 const u8 *tbtt_info, u8 tbtt_info_len) 2620 { 2621 struct sta_csa_rnr_iter_data *data = _data; 2622 struct ieee80211_link_data *link = data->link; 2623 struct ieee80211_sub_if_data *sdata = link->sdata; 2624 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2625 const struct ieee80211_tbtt_info_ge_11 *ti; 2626 enum nl80211_band band; 2627 unsigned int center_freq; 2628 int link_id; 2629 2630 if (type != IEEE80211_TBTT_INFO_TYPE_TBTT) 2631 return RNR_ITER_CONTINUE; 2632 2633 if (tbtt_info_len < sizeof(*ti)) 2634 return RNR_ITER_CONTINUE; 2635 2636 ti = (const void *)tbtt_info; 2637 2638 if (ti->mld_params.mld_id != data->mld_id) 2639 return RNR_ITER_CONTINUE; 2640 2641 link_id = le16_get_bits(ti->mld_params.params, 2642 IEEE80211_RNR_MLD_PARAMS_LINK_ID); 2643 if (link_id != data->link->link_id) 2644 return RNR_ITER_CONTINUE; 2645 2646 /* we found the entry for our link! */ 2647 2648 /* this AP is confused, it had this right before ... just disconnect */ 2649 if (!ieee80211_operating_class_to_band(info->op_class, &band)) { 2650 link_info(link, 2651 "AP now has invalid operating class in RNR, disconnect\n"); 2652 wiphy_work_queue(sdata->local->hw.wiphy, 2653 &ifmgd->csa_connection_drop_work); 2654 return RNR_ITER_BREAK; 2655 } 2656 2657 center_freq = ieee80211_channel_to_frequency(info->channel, band); 2658 data->chan = ieee80211_get_channel(sdata->local->hw.wiphy, center_freq); 2659 2660 return RNR_ITER_BREAK; 2661 } 2662 2663 static void 2664 ieee80211_sta_other_link_csa_disappeared(struct ieee80211_link_data *link, 2665 struct ieee802_11_elems *elems) 2666 { 2667 struct ieee80211_sub_if_data *sdata = link->sdata; 2668 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2669 struct sta_csa_rnr_iter_data data = { 2670 .link = link, 2671 }; 2672 2673 /* 2674 * If we get here, we see a beacon from another link without 2675 * CSA still being reported for it, so now we have to check 2676 * if the CSA was aborted or completed. This may not even be 2677 * perfectly possible if the CSA was only done for changing 2678 * the puncturing, but in that case if the link in inactive 2679 * we don't really care, and if it's an active link (or when 2680 * it's activated later) we'll get a beacon and adjust. 2681 */ 2682 2683 if (WARN_ON(!elems->ml_basic)) 2684 return; 2685 2686 data.mld_id = ieee80211_mle_get_mld_id((const void *)elems->ml_basic); 2687 2688 /* 2689 * So in order to do this, iterate the RNR element(s) and see 2690 * what channel is reported now. 2691 */ 2692 cfg80211_iter_rnr(elems->ie_start, elems->total_len, 2693 ieee80211_sta_csa_rnr_iter, &data); 2694 2695 if (!data.chan) { 2696 link_info(link, 2697 "couldn't find (valid) channel in RNR for CSA, disconnect\n"); 2698 wiphy_work_queue(sdata->local->hw.wiphy, 2699 &ifmgd->csa_connection_drop_work); 2700 return; 2701 } 2702 2703 /* 2704 * If it doesn't match the CSA, then assume it aborted. This 2705 * may erroneously detect that it was _not_ aborted when it 2706 * was in fact aborted, but only changed the bandwidth or the 2707 * puncturing configuration, but we don't have enough data to 2708 * detect that. 2709 */ 2710 if (data.chan != link->csa.chanreq.oper.chan) 2711 ieee80211_sta_abort_chanswitch(link); 2712 } 2713 2714 enum ieee80211_csa_source { 2715 IEEE80211_CSA_SOURCE_BEACON, 2716 IEEE80211_CSA_SOURCE_OTHER_LINK, 2717 IEEE80211_CSA_SOURCE_PROT_ACTION, 2718 IEEE80211_CSA_SOURCE_UNPROT_ACTION, 2719 }; 2720 2721 static void 2722 ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, 2723 u64 timestamp, u32 device_timestamp, 2724 struct ieee802_11_elems *full_elems, 2725 struct ieee802_11_elems *csa_elems, 2726 enum ieee80211_csa_source source) 2727 { 2728 struct ieee80211_sub_if_data *sdata = link->sdata; 2729 struct ieee80211_local *local = sdata->local; 2730 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2731 struct ieee80211_chanctx *chanctx = NULL; 2732 struct ieee80211_chanctx_conf *conf; 2733 struct ieee80211_csa_ie csa_ie = {}; 2734 struct ieee80211_channel_switch ch_switch = { 2735 .link_id = link->link_id, 2736 .timestamp = timestamp, 2737 .device_timestamp = device_timestamp, 2738 }; 2739 unsigned long now; 2740 int res; 2741 2742 lockdep_assert_wiphy(local->hw.wiphy); 2743 2744 if (csa_elems) { 2745 struct cfg80211_bss *cbss = link->conf->bss; 2746 enum nl80211_band current_band; 2747 struct ieee80211_bss *bss; 2748 2749 if (WARN_ON(!cbss)) 2750 return; 2751 2752 current_band = cbss->channel->band; 2753 bss = (void *)cbss->priv; 2754 2755 res = ieee80211_parse_ch_switch_ie(sdata, csa_elems, 2756 current_band, 2757 bss->vht_cap_info, 2758 &link->u.mgd.conn, 2759 link->u.mgd.bssid, 2760 source == IEEE80211_CSA_SOURCE_UNPROT_ACTION, 2761 &csa_ie); 2762 if (res == 0) { 2763 ch_switch.block_tx = csa_ie.mode; 2764 ch_switch.chandef = csa_ie.chanreq.oper; 2765 ch_switch.count = csa_ie.count; 2766 ch_switch.delay = csa_ie.max_switch_time; 2767 } 2768 2769 link->u.mgd.csa.tpe = csa_elems->csa_tpe; 2770 } else { 2771 /* 2772 * If there was no per-STA profile for this link, we 2773 * get called with csa_elems == NULL. This of course means 2774 * there are no CSA elements, so set res=1 indicating 2775 * no more CSA. 2776 */ 2777 res = 1; 2778 } 2779 2780 if (res < 0) { 2781 /* ignore this case, not a protected frame */ 2782 if (source == IEEE80211_CSA_SOURCE_UNPROT_ACTION) 2783 return; 2784 goto drop_connection; 2785 } 2786 2787 if (link->conf->csa_active) { 2788 switch (source) { 2789 case IEEE80211_CSA_SOURCE_PROT_ACTION: 2790 case IEEE80211_CSA_SOURCE_UNPROT_ACTION: 2791 /* already processing - disregard action frames */ 2792 return; 2793 case IEEE80211_CSA_SOURCE_BEACON: 2794 if (link->u.mgd.csa.waiting_bcn) { 2795 ieee80211_chswitch_post_beacon(link); 2796 /* 2797 * If the CSA is still present after the switch 2798 * we need to consider it as a new CSA (possibly 2799 * to self). This happens by not returning here 2800 * so we'll get to the check below. 2801 */ 2802 } else if (res) { 2803 ieee80211_sta_abort_chanswitch(link); 2804 return; 2805 } else { 2806 drv_channel_switch_rx_beacon(sdata, &ch_switch); 2807 return; 2808 } 2809 break; 2810 case IEEE80211_CSA_SOURCE_OTHER_LINK: 2811 /* active link: we want to see the beacon to continue */ 2812 if (ieee80211_vif_link_active(&sdata->vif, 2813 link->link_id)) 2814 return; 2815 2816 /* switch work ran, so just complete the process */ 2817 if (link->u.mgd.csa.waiting_bcn) { 2818 ieee80211_chswitch_post_beacon(link); 2819 /* 2820 * If the CSA is still present after the switch 2821 * we need to consider it as a new CSA (possibly 2822 * to self). This happens by not returning here 2823 * so we'll get to the check below. 2824 */ 2825 break; 2826 } 2827 2828 /* link still has CSA but we already know, do nothing */ 2829 if (!res) 2830 return; 2831 2832 /* check in the RNR if the CSA aborted */ 2833 ieee80211_sta_other_link_csa_disappeared(link, 2834 full_elems); 2835 return; 2836 } 2837 } 2838 2839 /* no active CSA nor a new one */ 2840 if (res) { 2841 /* 2842 * However, we may have stopped queues when receiving a public 2843 * action frame that couldn't be protected, if it had the quiet 2844 * bit set. This is a trade-off, we want to be quiet as soon as 2845 * possible, but also don't trust the public action frame much, 2846 * as it can't be protected. 2847 */ 2848 if (unlikely(link->u.mgd.csa.blocked_tx)) { 2849 link->u.mgd.csa.blocked_tx = false; 2850 ieee80211_vif_unblock_queues_csa(sdata); 2851 } 2852 return; 2853 } 2854 2855 /* 2856 * We don't really trust public action frames, but block queues (go to 2857 * quiet mode) for them anyway, we should get a beacon soon to either 2858 * know what the CSA really is, or figure out the public action frame 2859 * was actually an attack. 2860 */ 2861 if (source == IEEE80211_CSA_SOURCE_UNPROT_ACTION) { 2862 if (csa_ie.mode) { 2863 link->u.mgd.csa.blocked_tx = true; 2864 ieee80211_vif_block_queues_csa(sdata); 2865 } 2866 return; 2867 } 2868 2869 if (link->conf->chanreq.oper.chan->band != 2870 csa_ie.chanreq.oper.chan->band) { 2871 link_info(link, 2872 "AP %pM switches to different band (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", 2873 link->u.mgd.bssid, 2874 csa_ie.chanreq.oper.chan->center_freq, 2875 csa_ie.chanreq.oper.width, 2876 csa_ie.chanreq.oper.center_freq1, 2877 csa_ie.chanreq.oper.center_freq2); 2878 goto drop_connection; 2879 } 2880 2881 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chanreq.oper, 2882 IEEE80211_CHAN_DISABLED)) { 2883 link_info(link, 2884 "AP %pM switches to unsupported channel (%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), disconnecting\n", 2885 link->u.mgd.bssid, 2886 csa_ie.chanreq.oper.chan->center_freq, 2887 csa_ie.chanreq.oper.chan->freq_offset, 2888 csa_ie.chanreq.oper.width, 2889 csa_ie.chanreq.oper.center_freq1, 2890 csa_ie.chanreq.oper.freq1_offset, 2891 csa_ie.chanreq.oper.center_freq2); 2892 goto drop_connection; 2893 } 2894 2895 if (cfg80211_chandef_identical(&csa_ie.chanreq.oper, 2896 &link->conf->chanreq.oper) && 2897 (!csa_ie.mode || source != IEEE80211_CSA_SOURCE_BEACON)) { 2898 if (link->u.mgd.csa.ignored_same_chan) 2899 return; 2900 link_info(link, 2901 "AP %pM tries to chanswitch to same channel, ignore\n", 2902 link->u.mgd.bssid); 2903 link->u.mgd.csa.ignored_same_chan = true; 2904 return; 2905 } 2906 2907 /* 2908 * Drop all TDLS peers on the affected link - either we disconnect or 2909 * move to a different channel from this point on. There's no telling 2910 * what our peer will do. 2911 * The TDLS WIDER_BW scenario is also problematic, as peers might now 2912 * have an incompatible wider chandef. 2913 */ 2914 ieee80211_teardown_tdls_peers(link); 2915 2916 conf = rcu_dereference_protected(link->conf->chanctx_conf, 2917 lockdep_is_held(&local->hw.wiphy->mtx)); 2918 if (ieee80211_vif_link_active(&sdata->vif, link->link_id) && !conf) { 2919 link_info(link, 2920 "no channel context assigned to vif?, disconnecting\n"); 2921 goto drop_connection; 2922 } 2923 2924 if (conf) 2925 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2926 2927 if (!ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) { 2928 link_info(link, 2929 "driver doesn't support chan-switch with channel contexts\n"); 2930 goto drop_connection; 2931 } 2932 2933 if (drv_pre_channel_switch(sdata, &ch_switch)) { 2934 link_info(link, 2935 "preparing for channel switch failed, disconnecting\n"); 2936 goto drop_connection; 2937 } 2938 2939 link->u.mgd.csa.ap_chandef = csa_ie.chanreq.ap; 2940 2941 link->csa.chanreq.oper = csa_ie.chanreq.oper; 2942 ieee80211_set_chanreq_ap(sdata, &link->csa.chanreq, &link->u.mgd.conn, 2943 &csa_ie.chanreq.ap); 2944 2945 if (chanctx) { 2946 res = ieee80211_link_reserve_chanctx(link, &link->csa.chanreq, 2947 chanctx->mode, false); 2948 if (res) { 2949 link_info(link, 2950 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", 2951 res); 2952 goto drop_connection; 2953 } 2954 } 2955 2956 link->conf->csa_active = true; 2957 link->u.mgd.csa.ignored_same_chan = false; 2958 link->u.mgd.beacon_crc_valid = false; 2959 link->u.mgd.csa.blocked_tx = csa_ie.mode; 2960 2961 if (csa_ie.mode) 2962 ieee80211_vif_block_queues_csa(sdata); 2963 2964 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chanreq.oper, 2965 link->link_id, csa_ie.count, 2966 csa_ie.mode); 2967 2968 /* we may have to handle timeout for deactivated link in software */ 2969 now = jiffies; 2970 link->u.mgd.csa.time = now + 2971 TU_TO_JIFFIES((max_t(int, csa_ie.count, 1) - 1) * 2972 link->conf->beacon_int); 2973 2974 if (ieee80211_vif_link_active(&sdata->vif, link->link_id) && 2975 local->ops->channel_switch) { 2976 /* 2977 * Use driver's channel switch callback, the driver will 2978 * later call ieee80211_chswitch_done(). It may deactivate 2979 * the link as well, we handle that elsewhere and queue 2980 * the csa.switch_work for the calculated time then. 2981 */ 2982 drv_channel_switch(local, sdata, &ch_switch); 2983 return; 2984 } 2985 2986 /* channel switch handled in software */ 2987 wiphy_delayed_work_queue(local->hw.wiphy, 2988 &link->u.mgd.csa.switch_work, 2989 link->u.mgd.csa.time - now); 2990 return; 2991 drop_connection: 2992 /* 2993 * This is just so that the disconnect flow will know that 2994 * we were trying to switch channel and failed. In case the 2995 * mode is 1 (we are not allowed to Tx), we will know not to 2996 * send a deauthentication frame. Those two fields will be 2997 * reset when the disconnection worker runs. 2998 */ 2999 link->conf->csa_active = true; 3000 link->u.mgd.csa.blocked_tx = csa_ie.mode; 3001 3002 wiphy_work_queue(sdata->local->hw.wiphy, 3003 &ifmgd->csa_connection_drop_work); 3004 } 3005 3006 struct sta_bss_param_ch_cnt_data { 3007 struct ieee80211_sub_if_data *sdata; 3008 u8 reporting_link_id; 3009 u8 mld_id; 3010 }; 3011 3012 static enum cfg80211_rnr_iter_ret 3013 ieee80211_sta_bss_param_ch_cnt_iter(void *_data, u8 type, 3014 const struct ieee80211_neighbor_ap_info *info, 3015 const u8 *tbtt_info, u8 tbtt_info_len) 3016 { 3017 struct sta_bss_param_ch_cnt_data *data = _data; 3018 struct ieee80211_sub_if_data *sdata = data->sdata; 3019 const struct ieee80211_tbtt_info_ge_11 *ti; 3020 u8 bss_param_ch_cnt; 3021 int link_id; 3022 3023 if (type != IEEE80211_TBTT_INFO_TYPE_TBTT) 3024 return RNR_ITER_CONTINUE; 3025 3026 if (tbtt_info_len < sizeof(*ti)) 3027 return RNR_ITER_CONTINUE; 3028 3029 ti = (const void *)tbtt_info; 3030 3031 if (ti->mld_params.mld_id != data->mld_id) 3032 return RNR_ITER_CONTINUE; 3033 3034 link_id = le16_get_bits(ti->mld_params.params, 3035 IEEE80211_RNR_MLD_PARAMS_LINK_ID); 3036 bss_param_ch_cnt = 3037 le16_get_bits(ti->mld_params.params, 3038 IEEE80211_RNR_MLD_PARAMS_BSS_CHANGE_COUNT); 3039 3040 if (bss_param_ch_cnt != 255 && 3041 link_id < ARRAY_SIZE(sdata->link)) { 3042 struct ieee80211_link_data *link = 3043 sdata_dereference(sdata->link[link_id], sdata); 3044 3045 if (link && link->conf->bss_param_ch_cnt != bss_param_ch_cnt) { 3046 link->conf->bss_param_ch_cnt = bss_param_ch_cnt; 3047 link->conf->bss_param_ch_cnt_link_id = 3048 data->reporting_link_id; 3049 } 3050 } 3051 3052 return RNR_ITER_CONTINUE; 3053 } 3054 3055 static void 3056 ieee80211_mgd_update_bss_param_ch_cnt(struct ieee80211_sub_if_data *sdata, 3057 struct ieee80211_bss_conf *bss_conf, 3058 struct ieee802_11_elems *elems) 3059 { 3060 struct sta_bss_param_ch_cnt_data data = { 3061 .reporting_link_id = bss_conf->link_id, 3062 .sdata = sdata, 3063 }; 3064 int bss_param_ch_cnt; 3065 3066 if (!elems->ml_basic) 3067 return; 3068 3069 data.mld_id = ieee80211_mle_get_mld_id((const void *)elems->ml_basic); 3070 3071 cfg80211_iter_rnr(elems->ie_start, elems->total_len, 3072 ieee80211_sta_bss_param_ch_cnt_iter, &data); 3073 3074 bss_param_ch_cnt = 3075 ieee80211_mle_get_bss_param_ch_cnt((const void *)elems->ml_basic); 3076 3077 /* 3078 * Update bss_param_ch_cnt_link_id even if bss_param_ch_cnt 3079 * didn't change to indicate that we got a beacon on our own 3080 * link. 3081 */ 3082 if (bss_param_ch_cnt >= 0 && bss_param_ch_cnt != 255) { 3083 bss_conf->bss_param_ch_cnt = bss_param_ch_cnt; 3084 bss_conf->bss_param_ch_cnt_link_id = 3085 bss_conf->link_id; 3086 } 3087 } 3088 3089 static bool 3090 ieee80211_find_80211h_pwr_constr(struct ieee80211_channel *channel, 3091 const u8 *country_ie, u8 country_ie_len, 3092 const u8 *pwr_constr_elem, 3093 int *chan_pwr, int *pwr_reduction) 3094 { 3095 struct ieee80211_country_ie_triplet *triplet; 3096 int chan = ieee80211_frequency_to_channel(channel->center_freq); 3097 int i, chan_increment; 3098 bool have_chan_pwr = false; 3099 3100 /* Invalid IE */ 3101 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) 3102 return false; 3103 3104 triplet = (void *)(country_ie + 3); 3105 country_ie_len -= 3; 3106 3107 switch (channel->band) { 3108 default: 3109 WARN_ON_ONCE(1); 3110 fallthrough; 3111 case NL80211_BAND_2GHZ: 3112 case NL80211_BAND_60GHZ: 3113 case NL80211_BAND_LC: 3114 chan_increment = 1; 3115 break; 3116 case NL80211_BAND_5GHZ: 3117 chan_increment = 4; 3118 break; 3119 case NL80211_BAND_6GHZ: 3120 /* 3121 * In the 6 GHz band, the "maximum transmit power level" 3122 * field in the triplets is reserved, and thus will be 3123 * zero and we shouldn't use it to control TX power. 3124 * The actual TX power will be given in the transmit 3125 * power envelope element instead. 3126 */ 3127 return false; 3128 } 3129 3130 /* find channel */ 3131 while (country_ie_len >= 3) { 3132 u8 first_channel = triplet->chans.first_channel; 3133 3134 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) 3135 goto next; 3136 3137 for (i = 0; i < triplet->chans.num_channels; i++) { 3138 if (first_channel + i * chan_increment == chan) { 3139 have_chan_pwr = true; 3140 *chan_pwr = triplet->chans.max_power; 3141 break; 3142 } 3143 } 3144 if (have_chan_pwr) 3145 break; 3146 3147 next: 3148 triplet++; 3149 country_ie_len -= 3; 3150 } 3151 3152 if (have_chan_pwr && pwr_constr_elem) 3153 *pwr_reduction = *pwr_constr_elem; 3154 else 3155 *pwr_reduction = 0; 3156 3157 return have_chan_pwr; 3158 } 3159 3160 static void ieee80211_find_cisco_dtpc(struct ieee80211_channel *channel, 3161 const u8 *cisco_dtpc_ie, 3162 int *pwr_level) 3163 { 3164 /* From practical testing, the first data byte of the DTPC element 3165 * seems to contain the requested dBm level, and the CLI on Cisco 3166 * APs clearly state the range is -127 to 127 dBm, which indicates 3167 * a signed byte, although it seemingly never actually goes negative. 3168 * The other byte seems to always be zero. 3169 */ 3170 *pwr_level = (__s8)cisco_dtpc_ie[4]; 3171 } 3172 3173 static u64 ieee80211_handle_pwr_constr(struct ieee80211_link_data *link, 3174 struct ieee80211_channel *channel, 3175 struct ieee80211_mgmt *mgmt, 3176 const u8 *country_ie, u8 country_ie_len, 3177 const u8 *pwr_constr_ie, 3178 const u8 *cisco_dtpc_ie) 3179 { 3180 struct ieee80211_sub_if_data *sdata = link->sdata; 3181 bool has_80211h_pwr = false, has_cisco_pwr = false; 3182 int chan_pwr = 0, pwr_reduction_80211h = 0; 3183 int pwr_level_cisco, pwr_level_80211h; 3184 int new_ap_level; 3185 __le16 capab = mgmt->u.probe_resp.capab_info; 3186 3187 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) 3188 return 0; /* TODO */ 3189 3190 if (country_ie && 3191 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || 3192 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { 3193 has_80211h_pwr = ieee80211_find_80211h_pwr_constr( 3194 channel, country_ie, country_ie_len, 3195 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); 3196 pwr_level_80211h = 3197 max_t(int, 0, chan_pwr - pwr_reduction_80211h); 3198 } 3199 3200 if (cisco_dtpc_ie) { 3201 ieee80211_find_cisco_dtpc( 3202 channel, cisco_dtpc_ie, &pwr_level_cisco); 3203 has_cisco_pwr = true; 3204 } 3205 3206 if (!has_80211h_pwr && !has_cisco_pwr) 3207 return 0; 3208 3209 /* If we have both 802.11h and Cisco DTPC, apply both limits 3210 * by picking the smallest of the two power levels advertised. 3211 */ 3212 if (has_80211h_pwr && 3213 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { 3214 new_ap_level = pwr_level_80211h; 3215 3216 if (link->ap_power_level == new_ap_level) 3217 return 0; 3218 3219 sdata_dbg(sdata, 3220 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", 3221 pwr_level_80211h, chan_pwr, pwr_reduction_80211h, 3222 link->u.mgd.bssid); 3223 } else { /* has_cisco_pwr is always true here. */ 3224 new_ap_level = pwr_level_cisco; 3225 3226 if (link->ap_power_level == new_ap_level) 3227 return 0; 3228 3229 sdata_dbg(sdata, 3230 "Limiting TX power to %d dBm as advertised by %pM\n", 3231 pwr_level_cisco, link->u.mgd.bssid); 3232 } 3233 3234 link->ap_power_level = new_ap_level; 3235 if (__ieee80211_recalc_txpower(link)) 3236 return BSS_CHANGED_TXPOWER; 3237 return 0; 3238 } 3239 3240 /* powersave */ 3241 static void ieee80211_enable_ps(struct ieee80211_local *local, 3242 struct ieee80211_sub_if_data *sdata) 3243 { 3244 struct ieee80211_conf *conf = &local->hw.conf; 3245 3246 /* 3247 * If we are scanning right now then the parameters will 3248 * take effect when scan finishes. 3249 */ 3250 if (local->scanning) 3251 return; 3252 3253 if (conf->dynamic_ps_timeout > 0 && 3254 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { 3255 mod_timer(&local->dynamic_ps_timer, jiffies + 3256 msecs_to_jiffies(conf->dynamic_ps_timeout)); 3257 } else { 3258 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) 3259 ieee80211_send_nullfunc(local, sdata, true); 3260 3261 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && 3262 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 3263 return; 3264 3265 conf->flags |= IEEE80211_CONF_PS; 3266 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); 3267 } 3268 } 3269 3270 static void ieee80211_change_ps(struct ieee80211_local *local) 3271 { 3272 struct ieee80211_conf *conf = &local->hw.conf; 3273 3274 if (local->ps_sdata) { 3275 ieee80211_enable_ps(local, local->ps_sdata); 3276 } else if (conf->flags & IEEE80211_CONF_PS) { 3277 conf->flags &= ~IEEE80211_CONF_PS; 3278 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); 3279 timer_delete_sync(&local->dynamic_ps_timer); 3280 wiphy_work_cancel(local->hw.wiphy, 3281 &local->dynamic_ps_enable_work); 3282 } 3283 } 3284 3285 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) 3286 { 3287 struct ieee80211_local *local = sdata->local; 3288 struct ieee80211_if_managed *mgd = &sdata->u.mgd; 3289 struct sta_info *sta = NULL; 3290 bool authorized = false; 3291 3292 if (!mgd->powersave) 3293 return false; 3294 3295 if (mgd->broken_ap) 3296 return false; 3297 3298 if (!mgd->associated) 3299 return false; 3300 3301 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) 3302 return false; 3303 3304 if (!(local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) && 3305 !sdata->deflink.u.mgd.have_beacon) 3306 return false; 3307 3308 rcu_read_lock(); 3309 sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 3310 if (sta) 3311 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); 3312 rcu_read_unlock(); 3313 3314 return authorized; 3315 } 3316 3317 /* need to hold RTNL or interface lock */ 3318 void ieee80211_recalc_ps(struct ieee80211_local *local) 3319 { 3320 struct ieee80211_sub_if_data *sdata, *found = NULL; 3321 int count = 0; 3322 int timeout; 3323 3324 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS) || 3325 ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { 3326 local->ps_sdata = NULL; 3327 return; 3328 } 3329 3330 list_for_each_entry(sdata, &local->interfaces, list) { 3331 if (!ieee80211_sdata_running(sdata)) 3332 continue; 3333 if (sdata->vif.type == NL80211_IFTYPE_AP) { 3334 /* If an AP vif is found, then disable PS 3335 * by setting the count to zero thereby setting 3336 * ps_sdata to NULL. 3337 */ 3338 count = 0; 3339 break; 3340 } 3341 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3342 continue; 3343 found = sdata; 3344 count++; 3345 } 3346 3347 if (count == 1 && ieee80211_powersave_allowed(found)) { 3348 u8 dtimper = found->deflink.u.mgd.dtim_period; 3349 3350 timeout = local->dynamic_ps_forced_timeout; 3351 if (timeout < 0) 3352 timeout = 100; 3353 local->hw.conf.dynamic_ps_timeout = timeout; 3354 3355 /* If the TIM IE is invalid, pretend the value is 1 */ 3356 if (!dtimper) 3357 dtimper = 1; 3358 3359 local->hw.conf.ps_dtim_period = dtimper; 3360 local->ps_sdata = found; 3361 } else { 3362 local->ps_sdata = NULL; 3363 } 3364 3365 ieee80211_change_ps(local); 3366 } 3367 3368 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) 3369 { 3370 bool ps_allowed = ieee80211_powersave_allowed(sdata); 3371 3372 if (sdata->vif.cfg.ps != ps_allowed) { 3373 sdata->vif.cfg.ps = ps_allowed; 3374 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_PS); 3375 } 3376 } 3377 3378 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy, 3379 struct wiphy_work *work) 3380 { 3381 struct ieee80211_local *local = 3382 container_of(work, struct ieee80211_local, 3383 dynamic_ps_disable_work); 3384 3385 if (local->hw.conf.flags & IEEE80211_CONF_PS) { 3386 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 3387 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); 3388 } 3389 3390 ieee80211_wake_queues_by_reason(&local->hw, 3391 IEEE80211_MAX_QUEUE_MAP, 3392 IEEE80211_QUEUE_STOP_REASON_PS, 3393 false); 3394 } 3395 3396 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy, 3397 struct wiphy_work *work) 3398 { 3399 struct ieee80211_local *local = 3400 container_of(work, struct ieee80211_local, 3401 dynamic_ps_enable_work); 3402 struct ieee80211_sub_if_data *sdata = local->ps_sdata; 3403 struct ieee80211_if_managed *ifmgd; 3404 unsigned long flags; 3405 int q; 3406 3407 /* can only happen when PS was just disabled anyway */ 3408 if (!sdata) 3409 return; 3410 3411 ifmgd = &sdata->u.mgd; 3412 3413 if (local->hw.conf.flags & IEEE80211_CONF_PS) 3414 return; 3415 3416 if (local->hw.conf.dynamic_ps_timeout > 0) { 3417 /* don't enter PS if TX frames are pending */ 3418 if (drv_tx_frames_pending(local)) { 3419 mod_timer(&local->dynamic_ps_timer, jiffies + 3420 msecs_to_jiffies( 3421 local->hw.conf.dynamic_ps_timeout)); 3422 return; 3423 } 3424 3425 /* 3426 * transmission can be stopped by others which leads to 3427 * dynamic_ps_timer expiry. Postpone the ps timer if it 3428 * is not the actual idle state. 3429 */ 3430 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 3431 for (q = 0; q < local->hw.queues; q++) { 3432 if (local->queue_stop_reasons[q]) { 3433 spin_unlock_irqrestore(&local->queue_stop_reason_lock, 3434 flags); 3435 mod_timer(&local->dynamic_ps_timer, jiffies + 3436 msecs_to_jiffies( 3437 local->hw.conf.dynamic_ps_timeout)); 3438 return; 3439 } 3440 } 3441 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 3442 } 3443 3444 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && 3445 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { 3446 if (drv_tx_frames_pending(local)) { 3447 mod_timer(&local->dynamic_ps_timer, jiffies + 3448 msecs_to_jiffies( 3449 local->hw.conf.dynamic_ps_timeout)); 3450 } else { 3451 ieee80211_send_nullfunc(local, sdata, true); 3452 /* Flush to get the tx status of nullfunc frame */ 3453 ieee80211_flush_queues(local, sdata, false); 3454 } 3455 } 3456 3457 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && 3458 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) || 3459 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { 3460 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; 3461 local->hw.conf.flags |= IEEE80211_CONF_PS; 3462 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); 3463 } 3464 } 3465 3466 void ieee80211_dynamic_ps_timer(struct timer_list *t) 3467 { 3468 struct ieee80211_local *local = timer_container_of(local, t, 3469 dynamic_ps_timer); 3470 3471 wiphy_work_queue(local->hw.wiphy, &local->dynamic_ps_enable_work); 3472 } 3473 3474 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work) 3475 { 3476 struct ieee80211_link_data *link = 3477 container_of(work, struct ieee80211_link_data, 3478 dfs_cac_timer_work.work); 3479 struct cfg80211_chan_def chandef = link->conf->chanreq.oper; 3480 struct ieee80211_sub_if_data *sdata = link->sdata; 3481 3482 lockdep_assert_wiphy(sdata->local->hw.wiphy); 3483 3484 if (sdata->wdev.links[link->link_id].cac_started) { 3485 ieee80211_link_release_channel(link); 3486 cfg80211_cac_event(sdata->dev, &chandef, 3487 NL80211_RADAR_CAC_FINISHED, 3488 GFP_KERNEL, link->link_id); 3489 } 3490 } 3491 3492 static bool 3493 __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) 3494 { 3495 struct ieee80211_local *local = sdata->local; 3496 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3497 bool ret = false; 3498 int ac; 3499 3500 if (local->hw.queues < IEEE80211_NUM_ACS) 3501 return false; 3502 3503 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3504 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3505 int non_acm_ac; 3506 unsigned long now = jiffies; 3507 3508 if (tx_tspec->action == TX_TSPEC_ACTION_NONE && 3509 tx_tspec->admitted_time && 3510 time_after(now, tx_tspec->time_slice_start + HZ)) { 3511 tx_tspec->consumed_tx_time = 0; 3512 tx_tspec->time_slice_start = now; 3513 3514 if (tx_tspec->downgraded) 3515 tx_tspec->action = 3516 TX_TSPEC_ACTION_STOP_DOWNGRADE; 3517 } 3518 3519 switch (tx_tspec->action) { 3520 case TX_TSPEC_ACTION_STOP_DOWNGRADE: 3521 /* take the original parameters */ 3522 if (drv_conf_tx(local, &sdata->deflink, ac, 3523 &sdata->deflink.tx_conf[ac])) 3524 link_err(&sdata->deflink, 3525 "failed to set TX queue parameters for queue %d\n", 3526 ac); 3527 tx_tspec->action = TX_TSPEC_ACTION_NONE; 3528 tx_tspec->downgraded = false; 3529 ret = true; 3530 break; 3531 case TX_TSPEC_ACTION_DOWNGRADE: 3532 if (time_after(now, tx_tspec->time_slice_start + HZ)) { 3533 tx_tspec->action = TX_TSPEC_ACTION_NONE; 3534 ret = true; 3535 break; 3536 } 3537 /* downgrade next lower non-ACM AC */ 3538 for (non_acm_ac = ac + 1; 3539 non_acm_ac < IEEE80211_NUM_ACS; 3540 non_acm_ac++) 3541 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) 3542 break; 3543 /* Usually the loop will result in using BK even if it 3544 * requires admission control, but such a configuration 3545 * makes no sense and we have to transmit somehow - the 3546 * AC selection does the same thing. 3547 * If we started out trying to downgrade from BK, then 3548 * the extra condition here might be needed. 3549 */ 3550 if (non_acm_ac >= IEEE80211_NUM_ACS) 3551 non_acm_ac = IEEE80211_AC_BK; 3552 if (drv_conf_tx(local, &sdata->deflink, ac, 3553 &sdata->deflink.tx_conf[non_acm_ac])) 3554 link_err(&sdata->deflink, 3555 "failed to set TX queue parameters for queue %d\n", 3556 ac); 3557 tx_tspec->action = TX_TSPEC_ACTION_NONE; 3558 ret = true; 3559 wiphy_delayed_work_queue(local->hw.wiphy, 3560 &ifmgd->tx_tspec_wk, 3561 tx_tspec->time_slice_start + 3562 HZ - now + 1); 3563 break; 3564 case TX_TSPEC_ACTION_NONE: 3565 /* nothing now */ 3566 break; 3567 } 3568 } 3569 3570 return ret; 3571 } 3572 3573 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) 3574 { 3575 if (__ieee80211_sta_handle_tspec_ac_params(sdata)) 3576 ieee80211_link_info_change_notify(sdata, &sdata->deflink, 3577 BSS_CHANGED_QOS); 3578 } 3579 3580 static void ieee80211_sta_handle_tspec_ac_params_wk(struct wiphy *wiphy, 3581 struct wiphy_work *work) 3582 { 3583 struct ieee80211_sub_if_data *sdata; 3584 3585 sdata = container_of(work, struct ieee80211_sub_if_data, 3586 u.mgd.tx_tspec_wk.work); 3587 ieee80211_sta_handle_tspec_ac_params(sdata); 3588 } 3589 3590 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link) 3591 { 3592 struct ieee80211_sub_if_data *sdata = link->sdata; 3593 struct ieee80211_local *local = sdata->local; 3594 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3595 struct ieee80211_tx_queue_params *params = link->tx_conf; 3596 u8 ac; 3597 3598 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3599 mlme_dbg(sdata, 3600 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", 3601 ac, params[ac].acm, 3602 params[ac].aifs, params[ac].cw_min, params[ac].cw_max, 3603 params[ac].txop, params[ac].uapsd, 3604 ifmgd->tx_tspec[ac].downgraded); 3605 if (!ifmgd->tx_tspec[ac].downgraded && 3606 drv_conf_tx(local, link, ac, ¶ms[ac])) 3607 link_err(link, 3608 "failed to set TX queue parameters for AC %d\n", 3609 ac); 3610 } 3611 } 3612 3613 /* MLME */ 3614 static bool 3615 _ieee80211_sta_wmm_params(struct ieee80211_local *local, 3616 struct ieee80211_link_data *link, 3617 const u8 *wmm_param, size_t wmm_param_len, 3618 const struct ieee80211_mu_edca_param_set *mu_edca) 3619 { 3620 struct ieee80211_sub_if_data *sdata = link->sdata; 3621 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS]; 3622 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3623 size_t left; 3624 int count, mu_edca_count, ac; 3625 const u8 *pos; 3626 u8 uapsd_queues = 0; 3627 3628 if (!local->ops->conf_tx) 3629 return false; 3630 3631 if (local->hw.queues < IEEE80211_NUM_ACS) 3632 return false; 3633 3634 if (!wmm_param) 3635 return false; 3636 3637 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) 3638 return false; 3639 3640 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) 3641 uapsd_queues = ifmgd->uapsd_queues; 3642 3643 count = wmm_param[6] & 0x0f; 3644 /* -1 is the initial value of ifmgd->mu_edca_last_param_set. 3645 * if mu_edca was preset before and now it disappeared tell 3646 * the driver about it. 3647 */ 3648 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1; 3649 if (count == link->u.mgd.wmm_last_param_set && 3650 mu_edca_count == link->u.mgd.mu_edca_last_param_set) 3651 return false; 3652 link->u.mgd.wmm_last_param_set = count; 3653 link->u.mgd.mu_edca_last_param_set = mu_edca_count; 3654 3655 pos = wmm_param + 8; 3656 left = wmm_param_len - 8; 3657 3658 memset(¶ms, 0, sizeof(params)); 3659 3660 sdata->wmm_acm = 0; 3661 for (; left >= 4; left -= 4, pos += 4) { 3662 int aci = (pos[0] >> 5) & 0x03; 3663 int acm = (pos[0] >> 4) & 0x01; 3664 bool uapsd = false; 3665 3666 switch (aci) { 3667 case 1: /* AC_BK */ 3668 ac = IEEE80211_AC_BK; 3669 if (acm) 3670 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ 3671 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 3672 uapsd = true; 3673 params[ac].mu_edca = !!mu_edca; 3674 if (mu_edca) 3675 params[ac].mu_edca_param_rec = mu_edca->ac_bk; 3676 break; 3677 case 2: /* AC_VI */ 3678 ac = IEEE80211_AC_VI; 3679 if (acm) 3680 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ 3681 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 3682 uapsd = true; 3683 params[ac].mu_edca = !!mu_edca; 3684 if (mu_edca) 3685 params[ac].mu_edca_param_rec = mu_edca->ac_vi; 3686 break; 3687 case 3: /* AC_VO */ 3688 ac = IEEE80211_AC_VO; 3689 if (acm) 3690 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ 3691 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 3692 uapsd = true; 3693 params[ac].mu_edca = !!mu_edca; 3694 if (mu_edca) 3695 params[ac].mu_edca_param_rec = mu_edca->ac_vo; 3696 break; 3697 case 0: /* AC_BE */ 3698 default: 3699 ac = IEEE80211_AC_BE; 3700 if (acm) 3701 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ 3702 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 3703 uapsd = true; 3704 params[ac].mu_edca = !!mu_edca; 3705 if (mu_edca) 3706 params[ac].mu_edca_param_rec = mu_edca->ac_be; 3707 break; 3708 } 3709 3710 params[ac].aifs = pos[0] & 0x0f; 3711 3712 if (params[ac].aifs < 2) { 3713 link_info(link, 3714 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n", 3715 params[ac].aifs, aci); 3716 params[ac].aifs = 2; 3717 } 3718 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4); 3719 params[ac].cw_min = ecw2cw(pos[1] & 0x0f); 3720 params[ac].txop = get_unaligned_le16(pos + 2); 3721 params[ac].acm = acm; 3722 params[ac].uapsd = uapsd; 3723 3724 if (params[ac].cw_min == 0 || 3725 params[ac].cw_min > params[ac].cw_max) { 3726 link_info(link, 3727 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n", 3728 params[ac].cw_min, params[ac].cw_max, aci); 3729 return false; 3730 } 3731 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac); 3732 } 3733 3734 /* WMM specification requires all 4 ACIs. */ 3735 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3736 if (params[ac].cw_min == 0) { 3737 link_info(link, 3738 "AP has invalid WMM params (missing AC %d), using defaults\n", 3739 ac); 3740 return false; 3741 } 3742 } 3743 3744 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 3745 link->tx_conf[ac] = params[ac]; 3746 3747 return true; 3748 } 3749 3750 static bool 3751 ieee80211_sta_wmm_params(struct ieee80211_local *local, 3752 struct ieee80211_link_data *link, 3753 const u8 *wmm_param, size_t wmm_param_len, 3754 const struct ieee80211_mu_edca_param_set *mu_edca) 3755 { 3756 if (!_ieee80211_sta_wmm_params(local, link, wmm_param, wmm_param_len, 3757 mu_edca)) 3758 return false; 3759 3760 ieee80211_mgd_set_link_qos_params(link); 3761 3762 /* enable WMM or activate new settings */ 3763 link->conf->qos = true; 3764 return true; 3765 } 3766 3767 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) 3768 { 3769 lockdep_assert_wiphy(sdata->local->hw.wiphy); 3770 3771 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; 3772 ieee80211_run_deferred_scan(sdata->local); 3773 } 3774 3775 static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) 3776 { 3777 lockdep_assert_wiphy(sdata->local->hw.wiphy); 3778 3779 __ieee80211_stop_poll(sdata); 3780 } 3781 3782 static u64 ieee80211_handle_bss_capability(struct ieee80211_link_data *link, 3783 u16 capab, bool erp_valid, u8 erp) 3784 { 3785 struct ieee80211_bss_conf *bss_conf = link->conf; 3786 struct ieee80211_supported_band *sband; 3787 u64 changed = 0; 3788 bool use_protection; 3789 bool use_short_preamble; 3790 bool use_short_slot; 3791 3792 sband = ieee80211_get_link_sband(link); 3793 if (!sband) 3794 return changed; 3795 3796 if (erp_valid) { 3797 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; 3798 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; 3799 } else { 3800 use_protection = false; 3801 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); 3802 } 3803 3804 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); 3805 if (sband->band == NL80211_BAND_5GHZ || 3806 sband->band == NL80211_BAND_6GHZ) 3807 use_short_slot = true; 3808 3809 if (use_protection != bss_conf->use_cts_prot) { 3810 bss_conf->use_cts_prot = use_protection; 3811 changed |= BSS_CHANGED_ERP_CTS_PROT; 3812 } 3813 3814 if (use_short_preamble != bss_conf->use_short_preamble) { 3815 bss_conf->use_short_preamble = use_short_preamble; 3816 changed |= BSS_CHANGED_ERP_PREAMBLE; 3817 } 3818 3819 if (use_short_slot != bss_conf->use_short_slot) { 3820 bss_conf->use_short_slot = use_short_slot; 3821 changed |= BSS_CHANGED_ERP_SLOT; 3822 } 3823 3824 return changed; 3825 } 3826 3827 static u64 ieee80211_link_set_associated(struct ieee80211_link_data *link, 3828 struct cfg80211_bss *cbss) 3829 { 3830 struct ieee80211_sub_if_data *sdata = link->sdata; 3831 struct ieee80211_bss_conf *bss_conf = link->conf; 3832 struct ieee80211_bss *bss = (void *)cbss->priv; 3833 u64 changed = BSS_CHANGED_QOS; 3834 3835 /* not really used in MLO */ 3836 sdata->u.mgd.beacon_timeout = 3837 usecs_to_jiffies(ieee80211_tu_to_usec(beacon_loss_count * 3838 bss_conf->beacon_int)); 3839 3840 changed |= ieee80211_handle_bss_capability(link, 3841 bss_conf->assoc_capability, 3842 bss->has_erp_value, 3843 bss->erp_value); 3844 3845 ieee80211_check_rate_mask(link); 3846 3847 link->conf->bss = cbss; 3848 memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN); 3849 3850 if (sdata->vif.p2p || 3851 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { 3852 const struct cfg80211_bss_ies *ies; 3853 3854 rcu_read_lock(); 3855 ies = rcu_dereference(cbss->ies); 3856 if (ies) { 3857 int ret; 3858 3859 ret = cfg80211_get_p2p_attr( 3860 ies->data, ies->len, 3861 IEEE80211_P2P_ATTR_ABSENCE_NOTICE, 3862 (u8 *) &bss_conf->p2p_noa_attr, 3863 sizeof(bss_conf->p2p_noa_attr)); 3864 if (ret >= 2) { 3865 link->u.mgd.p2p_noa_index = 3866 bss_conf->p2p_noa_attr.index; 3867 changed |= BSS_CHANGED_P2P_PS; 3868 } 3869 } 3870 rcu_read_unlock(); 3871 } 3872 3873 if (link->u.mgd.have_beacon) { 3874 bss_conf->beacon_rate = bss->beacon_rate; 3875 changed |= BSS_CHANGED_BEACON_INFO; 3876 } else { 3877 bss_conf->beacon_rate = NULL; 3878 } 3879 3880 /* Tell the driver to monitor connection quality (if supported) */ 3881 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && 3882 bss_conf->cqm_rssi_thold) 3883 changed |= BSS_CHANGED_CQM; 3884 3885 return changed; 3886 } 3887 3888 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, 3889 struct ieee80211_mgd_assoc_data *assoc_data, 3890 u64 changed[IEEE80211_MLD_MAX_NUM_LINKS]) 3891 { 3892 struct ieee80211_local *local = sdata->local; 3893 struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg; 3894 u64 vif_changed = BSS_CHANGED_ASSOC; 3895 unsigned int link_id; 3896 3897 lockdep_assert_wiphy(local->hw.wiphy); 3898 3899 sdata->u.mgd.associated = true; 3900 3901 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 3902 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 3903 struct ieee80211_link_data *link; 3904 3905 if (!cbss || 3906 assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) 3907 continue; 3908 3909 if (ieee80211_vif_is_mld(&sdata->vif) && 3910 !(ieee80211_vif_usable_links(&sdata->vif) & BIT(link_id))) 3911 continue; 3912 3913 link = sdata_dereference(sdata->link[link_id], sdata); 3914 if (WARN_ON(!link)) 3915 return; 3916 3917 changed[link_id] |= ieee80211_link_set_associated(link, cbss); 3918 } 3919 3920 /* just to be sure */ 3921 ieee80211_stop_poll(sdata); 3922 3923 ieee80211_led_assoc(local, 1); 3924 3925 vif_cfg->assoc = 1; 3926 3927 /* Enable ARP filtering */ 3928 if (vif_cfg->arp_addr_cnt) 3929 vif_changed |= BSS_CHANGED_ARP_FILTER; 3930 3931 if (ieee80211_vif_is_mld(&sdata->vif)) { 3932 for (link_id = 0; 3933 link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3934 link_id++) { 3935 struct ieee80211_link_data *link; 3936 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 3937 3938 if (!cbss || 3939 !(BIT(link_id) & 3940 ieee80211_vif_usable_links(&sdata->vif)) || 3941 assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) 3942 continue; 3943 3944 link = sdata_dereference(sdata->link[link_id], sdata); 3945 if (WARN_ON(!link)) 3946 return; 3947 3948 ieee80211_link_info_change_notify(sdata, link, 3949 changed[link_id]); 3950 3951 ieee80211_recalc_smps(sdata, link); 3952 } 3953 3954 ieee80211_vif_cfg_change_notify(sdata, vif_changed); 3955 } else { 3956 ieee80211_bss_info_change_notify(sdata, 3957 vif_changed | changed[0]); 3958 } 3959 3960 ieee80211_recalc_ps(local); 3961 3962 /* leave this here to not change ordering in non-MLO cases */ 3963 if (!ieee80211_vif_is_mld(&sdata->vif)) 3964 ieee80211_recalc_smps(sdata, &sdata->deflink); 3965 ieee80211_recalc_ps_vif(sdata); 3966 3967 netif_carrier_on(sdata->dev); 3968 } 3969 3970 static void ieee80211_ml_reconf_reset(struct ieee80211_sub_if_data *sdata) 3971 { 3972 struct ieee80211_mgd_assoc_data *add_links_data = 3973 sdata->u.mgd.reconf.add_links_data; 3974 3975 if (!ieee80211_vif_is_mld(&sdata->vif) || 3976 !(sdata->u.mgd.reconf.added_links | 3977 sdata->u.mgd.reconf.removed_links)) 3978 return; 3979 3980 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 3981 &sdata->u.mgd.reconf.wk); 3982 sdata->u.mgd.reconf.added_links = 0; 3983 sdata->u.mgd.reconf.removed_links = 0; 3984 sdata->u.mgd.reconf.dialog_token = 0; 3985 3986 if (add_links_data) { 3987 struct cfg80211_mlo_reconf_done_data done_data = {}; 3988 u8 link_id; 3989 3990 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3991 link_id++) 3992 done_data.links[link_id].bss = 3993 add_links_data->link[link_id].bss; 3994 3995 cfg80211_mlo_reconf_add_done(sdata->dev, &done_data); 3996 3997 kfree(sdata->u.mgd.reconf.add_links_data); 3998 sdata->u.mgd.reconf.add_links_data = NULL; 3999 } 4000 } 4001 4002 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, 4003 u16 stype, u16 reason, bool tx, 4004 u8 *frame_buf) 4005 { 4006 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4007 struct ieee80211_local *local = sdata->local; 4008 struct sta_info *ap_sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 4009 unsigned int link_id; 4010 u64 changed = 0; 4011 struct ieee80211_prep_tx_info info = { 4012 .subtype = stype, 4013 .was_assoc = true, 4014 .link_id = ffs(sdata->vif.active_links) - 1, 4015 }; 4016 4017 lockdep_assert_wiphy(local->hw.wiphy); 4018 4019 if (frame_buf) 4020 memset(frame_buf, 0, IEEE80211_DEAUTH_FRAME_LEN); 4021 4022 if (WARN_ON(!ap_sta)) 4023 return; 4024 4025 if (WARN_ON_ONCE(tx && !frame_buf)) 4026 return; 4027 4028 if (WARN_ON(!ifmgd->associated)) 4029 return; 4030 4031 ieee80211_stop_poll(sdata); 4032 4033 ifmgd->associated = false; 4034 4035 if (tx) { 4036 bool tx_link_found = false; 4037 4038 for (link_id = 0; 4039 link_id < ARRAY_SIZE(sdata->link); 4040 link_id++) { 4041 struct ieee80211_link_data *link; 4042 4043 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 4044 continue; 4045 4046 link = sdata_dereference(sdata->link[link_id], sdata); 4047 if (WARN_ON_ONCE(!link)) 4048 continue; 4049 4050 if (link->u.mgd.csa.blocked_tx) 4051 continue; 4052 4053 tx_link_found = true; 4054 break; 4055 } 4056 4057 tx = tx_link_found; 4058 } 4059 4060 /* other links will be destroyed */ 4061 sdata->deflink.conf->bss = NULL; 4062 sdata->deflink.conf->epcs_support = false; 4063 sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; 4064 4065 netif_carrier_off(sdata->dev); 4066 4067 /* 4068 * if we want to get out of ps before disassoc (why?) we have 4069 * to do it before sending disassoc, as otherwise the null-packet 4070 * won't be valid. 4071 */ 4072 if (local->hw.conf.flags & IEEE80211_CONF_PS) { 4073 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 4074 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); 4075 } 4076 local->ps_sdata = NULL; 4077 4078 /* disable per-vif ps */ 4079 ieee80211_recalc_ps_vif(sdata); 4080 4081 /* make sure ongoing transmission finishes */ 4082 synchronize_net(); 4083 4084 /* 4085 * drop any frame before deauth/disassoc, this can be data or 4086 * management frame. Since we are disconnecting, we should not 4087 * insist sending these frames which can take time and delay 4088 * the disconnection and possible the roaming. 4089 */ 4090 ieee80211_flush_queues(local, sdata, true); 4091 4092 if (tx) { 4093 drv_mgd_prepare_tx(sdata->local, sdata, &info); 4094 4095 ieee80211_send_deauth_disassoc(sdata, sdata->vif.cfg.ap_addr, 4096 sdata->vif.cfg.ap_addr, stype, 4097 reason, true, frame_buf); 4098 4099 /* flush out frame - make sure the deauth was actually sent */ 4100 ieee80211_flush_queues(local, sdata, false); 4101 4102 drv_mgd_complete_tx(sdata->local, sdata, &info); 4103 } else if (frame_buf) { 4104 ieee80211_send_deauth_disassoc(sdata, sdata->vif.cfg.ap_addr, 4105 sdata->vif.cfg.ap_addr, stype, 4106 reason, false, frame_buf); 4107 } 4108 4109 /* clear AP addr only after building the needed mgmt frames */ 4110 eth_zero_addr(sdata->deflink.u.mgd.bssid); 4111 eth_zero_addr(sdata->vif.cfg.ap_addr); 4112 4113 sdata->vif.cfg.ssid_len = 0; 4114 4115 /* Remove TDLS peers */ 4116 __sta_info_flush(sdata, false, -1, ap_sta); 4117 4118 if (sdata->vif.driver_flags & IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC) { 4119 /* Only move the AP state */ 4120 sta_info_move_state(ap_sta, IEEE80211_STA_NONE); 4121 } else { 4122 /* Remove AP peer */ 4123 sta_info_flush(sdata, -1); 4124 } 4125 4126 /* finally reset all BSS / config parameters */ 4127 if (!ieee80211_vif_is_mld(&sdata->vif)) 4128 changed |= ieee80211_reset_erp_info(sdata); 4129 4130 ieee80211_led_assoc(local, 0); 4131 changed |= BSS_CHANGED_ASSOC; 4132 sdata->vif.cfg.assoc = false; 4133 4134 sdata->deflink.u.mgd.p2p_noa_index = -1; 4135 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 4136 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 4137 4138 /* on the next assoc, re-program HT/VHT parameters */ 4139 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); 4140 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); 4141 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); 4142 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); 4143 4144 /* 4145 * reset MU-MIMO ownership and group data in default link, 4146 * if used, other links are destroyed 4147 */ 4148 memset(sdata->vif.bss_conf.mu_group.membership, 0, 4149 sizeof(sdata->vif.bss_conf.mu_group.membership)); 4150 memset(sdata->vif.bss_conf.mu_group.position, 0, 4151 sizeof(sdata->vif.bss_conf.mu_group.position)); 4152 if (!ieee80211_vif_is_mld(&sdata->vif)) 4153 changed |= BSS_CHANGED_MU_GROUPS; 4154 sdata->vif.bss_conf.mu_mimo_owner = false; 4155 4156 sdata->deflink.ap_power_level = IEEE80211_UNSET_POWER_LEVEL; 4157 4158 timer_delete_sync(&local->dynamic_ps_timer); 4159 wiphy_work_cancel(local->hw.wiphy, &local->dynamic_ps_enable_work); 4160 4161 /* Disable ARP filtering */ 4162 if (sdata->vif.cfg.arp_addr_cnt) 4163 changed |= BSS_CHANGED_ARP_FILTER; 4164 4165 sdata->vif.bss_conf.qos = false; 4166 if (!ieee80211_vif_is_mld(&sdata->vif)) { 4167 changed |= BSS_CHANGED_QOS; 4168 /* The BSSID (not really interesting) and HT changed */ 4169 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; 4170 ieee80211_bss_info_change_notify(sdata, changed); 4171 } else { 4172 ieee80211_vif_cfg_change_notify(sdata, changed); 4173 } 4174 4175 if (sdata->vif.driver_flags & IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC) { 4176 /* 4177 * After notifying the driver about the disassoc, 4178 * remove the ap sta. 4179 */ 4180 sta_info_flush(sdata, -1); 4181 } 4182 4183 /* disassociated - set to defaults now */ 4184 ieee80211_set_wmm_default(&sdata->deflink, false, false); 4185 4186 timer_delete_sync(&sdata->u.mgd.conn_mon_timer); 4187 timer_delete_sync(&sdata->u.mgd.bcn_mon_timer); 4188 timer_delete_sync(&sdata->u.mgd.timer); 4189 4190 sdata->vif.bss_conf.dtim_period = 0; 4191 sdata->vif.bss_conf.beacon_rate = NULL; 4192 4193 sdata->deflink.u.mgd.have_beacon = false; 4194 sdata->deflink.u.mgd.tracking_signal_avg = false; 4195 sdata->deflink.u.mgd.disable_wmm_tracking = false; 4196 4197 ifmgd->flags = 0; 4198 4199 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 4200 struct ieee80211_link_data *link; 4201 4202 link = sdata_dereference(sdata->link[link_id], sdata); 4203 if (!link) 4204 continue; 4205 ieee80211_link_release_channel(link); 4206 } 4207 4208 sdata->vif.bss_conf.csa_active = false; 4209 sdata->deflink.u.mgd.csa.blocked_tx = false; 4210 sdata->deflink.u.mgd.csa.waiting_bcn = false; 4211 sdata->deflink.u.mgd.csa.ignored_same_chan = false; 4212 ieee80211_vif_unblock_queues_csa(sdata); 4213 4214 /* existing TX TSPEC sessions no longer exist */ 4215 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); 4216 wiphy_delayed_work_cancel(local->hw.wiphy, &ifmgd->tx_tspec_wk); 4217 4218 sdata->vif.bss_conf.power_type = IEEE80211_REG_UNSET_AP; 4219 sdata->vif.bss_conf.pwr_reduction = 0; 4220 ieee80211_clear_tpe(&sdata->vif.bss_conf.tpe); 4221 4222 sdata->vif.cfg.eml_cap = 0; 4223 sdata->vif.cfg.eml_med_sync_delay = 0; 4224 sdata->vif.cfg.mld_capa_op = 0; 4225 4226 memset(&sdata->u.mgd.ttlm_info, 0, 4227 sizeof(sdata->u.mgd.ttlm_info)); 4228 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, &ifmgd->ttlm_work); 4229 4230 memset(&sdata->vif.neg_ttlm, 0, sizeof(sdata->vif.neg_ttlm)); 4231 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 4232 &ifmgd->neg_ttlm_timeout_work); 4233 4234 sdata->u.mgd.removed_links = 0; 4235 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 4236 &sdata->u.mgd.ml_reconf_work); 4237 4238 wiphy_work_cancel(sdata->local->hw.wiphy, 4239 &ifmgd->teardown_ttlm_work); 4240 4241 /* if disconnection happens in the middle of the ML reconfiguration 4242 * flow, cfg80211 must called to release the BSS references obtained 4243 * when the flow started. 4244 */ 4245 ieee80211_ml_reconf_reset(sdata); 4246 4247 ieee80211_vif_set_links(sdata, 0, 0); 4248 4249 ifmgd->mcast_seq_last = IEEE80211_SN_MODULO; 4250 4251 ifmgd->epcs.enabled = false; 4252 ifmgd->epcs.dialog_token = 0; 4253 4254 memset(ifmgd->userspace_selectors, 0, 4255 sizeof(ifmgd->userspace_selectors)); 4256 } 4257 4258 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) 4259 { 4260 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4261 struct ieee80211_local *local = sdata->local; 4262 4263 lockdep_assert_wiphy(local->hw.wiphy); 4264 4265 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) 4266 return; 4267 4268 __ieee80211_stop_poll(sdata); 4269 4270 ieee80211_recalc_ps(local); 4271 4272 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) 4273 return; 4274 4275 /* 4276 * We've received a probe response, but are not sure whether 4277 * we have or will be receiving any beacons or data, so let's 4278 * schedule the timers again, just in case. 4279 */ 4280 ieee80211_sta_reset_beacon_monitor(sdata); 4281 4282 mod_timer(&ifmgd->conn_mon_timer, 4283 round_jiffies_up(jiffies + 4284 IEEE80211_CONNECTION_IDLE_TIME)); 4285 } 4286 4287 static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, 4288 struct ieee80211_hdr *hdr, 4289 u16 tx_time) 4290 { 4291 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4292 u16 tid; 4293 int ac; 4294 struct ieee80211_sta_tx_tspec *tx_tspec; 4295 unsigned long now = jiffies; 4296 4297 if (!ieee80211_is_data_qos(hdr->frame_control)) 4298 return; 4299 4300 tid = ieee80211_get_tid(hdr); 4301 ac = ieee80211_ac_from_tid(tid); 4302 tx_tspec = &ifmgd->tx_tspec[ac]; 4303 4304 if (likely(!tx_tspec->admitted_time)) 4305 return; 4306 4307 if (time_after(now, tx_tspec->time_slice_start + HZ)) { 4308 tx_tspec->consumed_tx_time = 0; 4309 tx_tspec->time_slice_start = now; 4310 4311 if (tx_tspec->downgraded) { 4312 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 4313 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 4314 &ifmgd->tx_tspec_wk, 0); 4315 } 4316 } 4317 4318 if (tx_tspec->downgraded) 4319 return; 4320 4321 tx_tspec->consumed_tx_time += tx_time; 4322 4323 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { 4324 tx_tspec->downgraded = true; 4325 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; 4326 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 4327 &ifmgd->tx_tspec_wk, 0); 4328 } 4329 } 4330 4331 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 4332 struct ieee80211_hdr *hdr, bool ack, u16 tx_time) 4333 { 4334 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); 4335 4336 if (!ieee80211_is_any_nullfunc(hdr->frame_control) || 4337 !sdata->u.mgd.probe_send_count) 4338 return; 4339 4340 if (ack) 4341 sdata->u.mgd.probe_send_count = 0; 4342 else 4343 sdata->u.mgd.nullfunc_failed = true; 4344 wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work); 4345 } 4346 4347 static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata, 4348 const u8 *src, const u8 *dst, 4349 const u8 *ssid, size_t ssid_len, 4350 struct ieee80211_channel *channel) 4351 { 4352 struct sk_buff *skb; 4353 4354 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel, 4355 ssid, ssid_len, NULL, 0, 4356 IEEE80211_PROBE_FLAG_DIRECTED); 4357 if (skb) 4358 ieee80211_tx_skb(sdata, skb); 4359 } 4360 4361 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) 4362 { 4363 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4364 u8 *dst = sdata->vif.cfg.ap_addr; 4365 u8 unicast_limit = max(1, max_probe_tries - 3); 4366 struct sta_info *sta; 4367 4368 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4369 4370 /* 4371 * Try sending broadcast probe requests for the last three 4372 * probe requests after the first ones failed since some 4373 * buggy APs only support broadcast probe requests. 4374 */ 4375 if (ifmgd->probe_send_count >= unicast_limit) 4376 dst = NULL; 4377 4378 /* 4379 * When the hardware reports an accurate Tx ACK status, it's 4380 * better to send a nullfunc frame instead of a probe request, 4381 * as it will kick us off the AP quickly if we aren't associated 4382 * anymore. The timeout will be reset if the frame is ACKed by 4383 * the AP. 4384 */ 4385 ifmgd->probe_send_count++; 4386 4387 if (dst) { 4388 sta = sta_info_get(sdata, dst); 4389 if (!WARN_ON(!sta)) 4390 ieee80211_check_fast_rx(sta); 4391 } 4392 4393 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) { 4394 ifmgd->nullfunc_failed = false; 4395 ieee80211_send_nullfunc(sdata->local, sdata, false); 4396 } else { 4397 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst, 4398 sdata->vif.cfg.ssid, 4399 sdata->vif.cfg.ssid_len, 4400 sdata->deflink.conf->bss->channel); 4401 } 4402 4403 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); 4404 run_again(sdata, ifmgd->probe_timeout); 4405 } 4406 4407 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, 4408 bool beacon) 4409 { 4410 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4411 bool already = false; 4412 4413 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4414 4415 if (!ieee80211_sdata_running(sdata)) 4416 return; 4417 4418 if (!ifmgd->associated) 4419 return; 4420 4421 if (sdata->local->tmp_channel || sdata->local->scanning) 4422 return; 4423 4424 if (sdata->local->suspending) { 4425 /* reschedule after resume */ 4426 ieee80211_reset_ap_probe(sdata); 4427 return; 4428 } 4429 4430 if (beacon) { 4431 mlme_dbg_ratelimited(sdata, 4432 "detected beacon loss from AP (missed %d beacons) - probing\n", 4433 beacon_loss_count); 4434 4435 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); 4436 } 4437 4438 /* 4439 * The driver/our work has already reported this event or the 4440 * connection monitoring has kicked in and we have already sent 4441 * a probe request. Or maybe the AP died and the driver keeps 4442 * reporting until we disassociate... 4443 * 4444 * In either case we have to ignore the current call to this 4445 * function (except for setting the correct probe reason bit) 4446 * because otherwise we would reset the timer every time and 4447 * never check whether we received a probe response! 4448 */ 4449 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) 4450 already = true; 4451 4452 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; 4453 4454 if (already) 4455 return; 4456 4457 ieee80211_recalc_ps(sdata->local); 4458 4459 ifmgd->probe_send_count = 0; 4460 ieee80211_mgd_probe_ap_send(sdata); 4461 } 4462 4463 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 4464 struct ieee80211_vif *vif) 4465 { 4466 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4467 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4468 struct cfg80211_bss *cbss; 4469 struct sk_buff *skb; 4470 const struct element *ssid; 4471 int ssid_len; 4472 4473 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4474 4475 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || 4476 ieee80211_vif_is_mld(&sdata->vif))) 4477 return NULL; 4478 4479 if (ifmgd->associated) 4480 cbss = sdata->deflink.conf->bss; 4481 else if (ifmgd->auth_data) 4482 cbss = ifmgd->auth_data->bss; 4483 else if (ifmgd->assoc_data && ifmgd->assoc_data->link[0].bss) 4484 cbss = ifmgd->assoc_data->link[0].bss; 4485 else 4486 return NULL; 4487 4488 rcu_read_lock(); 4489 ssid = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID); 4490 if (WARN_ONCE(!ssid || ssid->datalen > IEEE80211_MAX_SSID_LEN, 4491 "invalid SSID element (len=%d)", 4492 ssid ? ssid->datalen : -1)) 4493 ssid_len = 0; 4494 else 4495 ssid_len = ssid->datalen; 4496 4497 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, 4498 (u32) -1, cbss->channel, 4499 ssid->data, ssid_len, 4500 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED); 4501 rcu_read_unlock(); 4502 4503 return skb; 4504 } 4505 EXPORT_SYMBOL(ieee80211_ap_probereq_get); 4506 4507 static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, 4508 const u8 *buf, size_t len, bool tx, 4509 u16 reason, bool reconnect) 4510 { 4511 struct ieee80211_event event = { 4512 .type = MLME_EVENT, 4513 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, 4514 .u.mlme.reason = reason, 4515 }; 4516 4517 if (tx) 4518 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len, reconnect); 4519 else 4520 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); 4521 4522 drv_event_callback(sdata->local, sdata, &event); 4523 } 4524 4525 static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) 4526 { 4527 struct ieee80211_local *local = sdata->local; 4528 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4529 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 4530 4531 lockdep_assert_wiphy(local->hw.wiphy); 4532 4533 if (!ifmgd->associated) 4534 return; 4535 4536 if (!ifmgd->driver_disconnect) { 4537 unsigned int link_id; 4538 4539 /* 4540 * AP is probably out of range (or not reachable for another 4541 * reason) so remove the bss structs for that AP. In the case 4542 * of multi-link, it's not clear that all of them really are 4543 * out of range, but if they weren't the driver likely would 4544 * have switched to just have a single link active? 4545 */ 4546 for (link_id = 0; 4547 link_id < ARRAY_SIZE(sdata->link); 4548 link_id++) { 4549 struct ieee80211_link_data *link; 4550 4551 link = sdata_dereference(sdata->link[link_id], sdata); 4552 if (!link || !link->conf->bss) 4553 continue; 4554 cfg80211_unlink_bss(local->hw.wiphy, link->conf->bss); 4555 link->conf->bss = NULL; 4556 } 4557 } 4558 4559 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, 4560 ifmgd->driver_disconnect ? 4561 WLAN_REASON_DEAUTH_LEAVING : 4562 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, 4563 true, frame_buf); 4564 /* the other links will be destroyed */ 4565 sdata->vif.bss_conf.csa_active = false; 4566 sdata->deflink.u.mgd.csa.waiting_bcn = false; 4567 sdata->deflink.u.mgd.csa.blocked_tx = false; 4568 ieee80211_vif_unblock_queues_csa(sdata); 4569 4570 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, 4571 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, 4572 ifmgd->reconnect); 4573 ifmgd->reconnect = false; 4574 } 4575 4576 static void ieee80211_beacon_connection_loss_work(struct wiphy *wiphy, 4577 struct wiphy_work *work) 4578 { 4579 struct ieee80211_sub_if_data *sdata = 4580 container_of(work, struct ieee80211_sub_if_data, 4581 u.mgd.beacon_connection_loss_work); 4582 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4583 4584 if (ifmgd->connection_loss) { 4585 sdata_info(sdata, "Connection to AP %pM lost\n", 4586 sdata->vif.cfg.ap_addr); 4587 __ieee80211_disconnect(sdata); 4588 ifmgd->connection_loss = false; 4589 } else if (ifmgd->driver_disconnect) { 4590 sdata_info(sdata, 4591 "Driver requested disconnection from AP %pM\n", 4592 sdata->vif.cfg.ap_addr); 4593 __ieee80211_disconnect(sdata); 4594 ifmgd->driver_disconnect = false; 4595 } else { 4596 if (ifmgd->associated) 4597 sdata->deflink.u.mgd.beacon_loss_count++; 4598 ieee80211_mgd_probe_ap(sdata, true); 4599 } 4600 } 4601 4602 static void ieee80211_csa_connection_drop_work(struct wiphy *wiphy, 4603 struct wiphy_work *work) 4604 { 4605 struct ieee80211_sub_if_data *sdata = 4606 container_of(work, struct ieee80211_sub_if_data, 4607 u.mgd.csa_connection_drop_work); 4608 4609 __ieee80211_disconnect(sdata); 4610 } 4611 4612 void ieee80211_beacon_loss(struct ieee80211_vif *vif) 4613 { 4614 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4615 struct ieee80211_hw *hw = &sdata->local->hw; 4616 4617 trace_api_beacon_loss(sdata); 4618 4619 sdata->u.mgd.connection_loss = false; 4620 wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work); 4621 } 4622 EXPORT_SYMBOL(ieee80211_beacon_loss); 4623 4624 void ieee80211_connection_loss(struct ieee80211_vif *vif) 4625 { 4626 struct ieee80211_sub_if_data *sdata; 4627 struct ieee80211_hw *hw; 4628 4629 KUNIT_STATIC_STUB_REDIRECT(ieee80211_connection_loss, vif); 4630 4631 sdata = vif_to_sdata(vif); 4632 hw = &sdata->local->hw; 4633 4634 trace_api_connection_loss(sdata); 4635 4636 sdata->u.mgd.connection_loss = true; 4637 wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work); 4638 } 4639 EXPORT_SYMBOL(ieee80211_connection_loss); 4640 4641 void ieee80211_disconnect(struct ieee80211_vif *vif, bool reconnect) 4642 { 4643 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4644 struct ieee80211_hw *hw = &sdata->local->hw; 4645 4646 trace_api_disconnect(sdata, reconnect); 4647 4648 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4649 return; 4650 4651 sdata->u.mgd.driver_disconnect = true; 4652 sdata->u.mgd.reconnect = reconnect; 4653 wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work); 4654 } 4655 EXPORT_SYMBOL(ieee80211_disconnect); 4656 4657 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, 4658 bool assoc) 4659 { 4660 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; 4661 4662 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4663 4664 sdata->u.mgd.auth_data = NULL; 4665 4666 if (!assoc) { 4667 /* 4668 * we are not authenticated yet, the only timer that could be 4669 * running is the timeout for the authentication response which 4670 * which is not relevant anymore. 4671 */ 4672 timer_delete_sync(&sdata->u.mgd.timer); 4673 sta_info_destroy_addr(sdata, auth_data->ap_addr); 4674 4675 /* other links are destroyed */ 4676 eth_zero_addr(sdata->deflink.u.mgd.bssid); 4677 ieee80211_link_info_change_notify(sdata, &sdata->deflink, 4678 BSS_CHANGED_BSSID); 4679 sdata->u.mgd.flags = 0; 4680 4681 ieee80211_link_release_channel(&sdata->deflink); 4682 ieee80211_vif_set_links(sdata, 0, 0); 4683 } 4684 4685 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); 4686 kfree(auth_data); 4687 } 4688 4689 enum assoc_status { 4690 ASSOC_SUCCESS, 4691 ASSOC_REJECTED, 4692 ASSOC_TIMEOUT, 4693 ASSOC_ABANDON, 4694 }; 4695 4696 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, 4697 enum assoc_status status) 4698 { 4699 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; 4700 4701 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4702 4703 sdata->u.mgd.assoc_data = NULL; 4704 4705 if (status != ASSOC_SUCCESS) { 4706 /* 4707 * we are not associated yet, the only timer that could be 4708 * running is the timeout for the association response which 4709 * which is not relevant anymore. 4710 */ 4711 timer_delete_sync(&sdata->u.mgd.timer); 4712 sta_info_destroy_addr(sdata, assoc_data->ap_addr); 4713 4714 eth_zero_addr(sdata->deflink.u.mgd.bssid); 4715 ieee80211_link_info_change_notify(sdata, &sdata->deflink, 4716 BSS_CHANGED_BSSID); 4717 sdata->u.mgd.flags = 0; 4718 sdata->vif.bss_conf.mu_mimo_owner = false; 4719 4720 if (status != ASSOC_REJECTED) { 4721 struct cfg80211_assoc_failure data = { 4722 .timeout = status == ASSOC_TIMEOUT, 4723 }; 4724 int i; 4725 4726 BUILD_BUG_ON(ARRAY_SIZE(data.bss) != 4727 ARRAY_SIZE(assoc_data->link)); 4728 4729 for (i = 0; i < ARRAY_SIZE(data.bss); i++) 4730 data.bss[i] = assoc_data->link[i].bss; 4731 4732 if (ieee80211_vif_is_mld(&sdata->vif)) 4733 data.ap_mld_addr = assoc_data->ap_addr; 4734 4735 cfg80211_assoc_failure(sdata->dev, &data); 4736 } 4737 4738 ieee80211_link_release_channel(&sdata->deflink); 4739 ieee80211_vif_set_links(sdata, 0, 0); 4740 } 4741 4742 kfree(assoc_data); 4743 } 4744 4745 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, 4746 struct ieee80211_mgmt *mgmt, size_t len) 4747 { 4748 struct ieee80211_local *local = sdata->local; 4749 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; 4750 const struct element *challenge; 4751 u8 *pos; 4752 u32 tx_flags = 0; 4753 struct ieee80211_prep_tx_info info = { 4754 .subtype = IEEE80211_STYPE_AUTH, 4755 .link_id = auth_data->link_id, 4756 }; 4757 4758 pos = mgmt->u.auth.variable; 4759 challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos, 4760 len - (pos - (u8 *)mgmt)); 4761 if (!challenge) 4762 return; 4763 auth_data->expected_transaction = 4; 4764 drv_mgd_prepare_tx(sdata->local, sdata, &info); 4765 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 4766 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | 4767 IEEE80211_TX_INTFL_MLME_CONN_TX; 4768 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, 4769 (void *)challenge, 4770 challenge->datalen + sizeof(*challenge), 4771 auth_data->ap_addr, auth_data->ap_addr, 4772 auth_data->key, auth_data->key_len, 4773 auth_data->key_idx, tx_flags); 4774 } 4775 4776 static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata) 4777 { 4778 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4779 const u8 *ap_addr = ifmgd->auth_data->ap_addr; 4780 struct sta_info *sta; 4781 4782 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4783 4784 sdata_info(sdata, "authenticated\n"); 4785 ifmgd->auth_data->done = true; 4786 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; 4787 ifmgd->auth_data->timeout_started = true; 4788 run_again(sdata, ifmgd->auth_data->timeout); 4789 4790 /* move station state to auth */ 4791 sta = sta_info_get(sdata, ap_addr); 4792 if (!sta) { 4793 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, ap_addr); 4794 return false; 4795 } 4796 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { 4797 sdata_info(sdata, "failed moving %pM to auth\n", ap_addr); 4798 return false; 4799 } 4800 4801 return true; 4802 } 4803 4804 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, 4805 struct ieee80211_mgmt *mgmt, size_t len) 4806 { 4807 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4808 u16 auth_alg, auth_transaction, status_code; 4809 struct ieee80211_event event = { 4810 .type = MLME_EVENT, 4811 .u.mlme.data = AUTH_EVENT, 4812 }; 4813 struct ieee80211_prep_tx_info info = { 4814 .subtype = IEEE80211_STYPE_AUTH, 4815 }; 4816 bool sae_need_confirm = false; 4817 4818 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4819 4820 if (len < 24 + 6) 4821 return; 4822 4823 if (!ifmgd->auth_data || ifmgd->auth_data->done) 4824 return; 4825 4826 if (!ether_addr_equal(ifmgd->auth_data->ap_addr, mgmt->bssid)) 4827 return; 4828 4829 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 4830 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 4831 status_code = le16_to_cpu(mgmt->u.auth.status_code); 4832 4833 info.link_id = ifmgd->auth_data->link_id; 4834 4835 if (auth_alg != ifmgd->auth_data->algorithm || 4836 (auth_alg != WLAN_AUTH_SAE && 4837 auth_transaction != ifmgd->auth_data->expected_transaction) || 4838 (auth_alg == WLAN_AUTH_SAE && 4839 (auth_transaction < ifmgd->auth_data->expected_transaction || 4840 auth_transaction > 2))) { 4841 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", 4842 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, 4843 auth_transaction, 4844 ifmgd->auth_data->expected_transaction); 4845 goto notify_driver; 4846 } 4847 4848 if (status_code != WLAN_STATUS_SUCCESS) { 4849 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); 4850 4851 if (auth_alg == WLAN_AUTH_SAE && 4852 (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED || 4853 (auth_transaction == 1 && 4854 (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT || 4855 status_code == WLAN_STATUS_SAE_PK)))) { 4856 /* waiting for userspace now */ 4857 ifmgd->auth_data->waiting = true; 4858 ifmgd->auth_data->timeout = 4859 jiffies + IEEE80211_AUTH_WAIT_SAE_RETRY; 4860 ifmgd->auth_data->timeout_started = true; 4861 run_again(sdata, ifmgd->auth_data->timeout); 4862 if (auth_transaction == 1) 4863 sae_need_confirm = true; 4864 goto notify_driver; 4865 } 4866 4867 sdata_info(sdata, "%pM denied authentication (status %d)\n", 4868 mgmt->sa, status_code); 4869 ieee80211_destroy_auth_data(sdata, false); 4870 event.u.mlme.status = MLME_DENIED; 4871 event.u.mlme.reason = status_code; 4872 drv_event_callback(sdata->local, sdata, &event); 4873 goto notify_driver; 4874 } 4875 4876 switch (ifmgd->auth_data->algorithm) { 4877 case WLAN_AUTH_OPEN: 4878 case WLAN_AUTH_LEAP: 4879 case WLAN_AUTH_FT: 4880 case WLAN_AUTH_SAE: 4881 case WLAN_AUTH_FILS_SK: 4882 case WLAN_AUTH_FILS_SK_PFS: 4883 case WLAN_AUTH_FILS_PK: 4884 break; 4885 case WLAN_AUTH_SHARED_KEY: 4886 if (ifmgd->auth_data->expected_transaction != 4) { 4887 ieee80211_auth_challenge(sdata, mgmt, len); 4888 /* need another frame */ 4889 return; 4890 } 4891 break; 4892 default: 4893 WARN_ONCE(1, "invalid auth alg %d", 4894 ifmgd->auth_data->algorithm); 4895 goto notify_driver; 4896 } 4897 4898 event.u.mlme.status = MLME_SUCCESS; 4899 info.success = 1; 4900 drv_event_callback(sdata->local, sdata, &event); 4901 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE || 4902 (auth_transaction == 2 && 4903 ifmgd->auth_data->expected_transaction == 2)) { 4904 if (!ieee80211_mark_sta_auth(sdata)) 4905 return; /* ignore frame -- wait for timeout */ 4906 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && 4907 auth_transaction == 1) { 4908 sae_need_confirm = true; 4909 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && 4910 auth_transaction == 2) { 4911 sdata_info(sdata, "SAE peer confirmed\n"); 4912 ifmgd->auth_data->peer_confirmed = true; 4913 } 4914 4915 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); 4916 notify_driver: 4917 if (!sae_need_confirm) 4918 drv_mgd_complete_tx(sdata->local, sdata, &info); 4919 } 4920 4921 #define case_WLAN(type) \ 4922 case WLAN_REASON_##type: return #type 4923 4924 const char *ieee80211_get_reason_code_string(u16 reason_code) 4925 { 4926 switch (reason_code) { 4927 case_WLAN(UNSPECIFIED); 4928 case_WLAN(PREV_AUTH_NOT_VALID); 4929 case_WLAN(DEAUTH_LEAVING); 4930 case_WLAN(DISASSOC_DUE_TO_INACTIVITY); 4931 case_WLAN(DISASSOC_AP_BUSY); 4932 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); 4933 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); 4934 case_WLAN(DISASSOC_STA_HAS_LEFT); 4935 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); 4936 case_WLAN(DISASSOC_BAD_POWER); 4937 case_WLAN(DISASSOC_BAD_SUPP_CHAN); 4938 case_WLAN(INVALID_IE); 4939 case_WLAN(MIC_FAILURE); 4940 case_WLAN(4WAY_HANDSHAKE_TIMEOUT); 4941 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); 4942 case_WLAN(IE_DIFFERENT); 4943 case_WLAN(INVALID_GROUP_CIPHER); 4944 case_WLAN(INVALID_PAIRWISE_CIPHER); 4945 case_WLAN(INVALID_AKMP); 4946 case_WLAN(UNSUPP_RSN_VERSION); 4947 case_WLAN(INVALID_RSN_IE_CAP); 4948 case_WLAN(IEEE8021X_FAILED); 4949 case_WLAN(CIPHER_SUITE_REJECTED); 4950 case_WLAN(DISASSOC_UNSPECIFIED_QOS); 4951 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); 4952 case_WLAN(DISASSOC_LOW_ACK); 4953 case_WLAN(DISASSOC_QAP_EXCEED_TXOP); 4954 case_WLAN(QSTA_LEAVE_QBSS); 4955 case_WLAN(QSTA_NOT_USE); 4956 case_WLAN(QSTA_REQUIRE_SETUP); 4957 case_WLAN(QSTA_TIMEOUT); 4958 case_WLAN(QSTA_CIPHER_NOT_SUPP); 4959 case_WLAN(MESH_PEER_CANCELED); 4960 case_WLAN(MESH_MAX_PEERS); 4961 case_WLAN(MESH_CONFIG); 4962 case_WLAN(MESH_CLOSE); 4963 case_WLAN(MESH_MAX_RETRIES); 4964 case_WLAN(MESH_CONFIRM_TIMEOUT); 4965 case_WLAN(MESH_INVALID_GTK); 4966 case_WLAN(MESH_INCONSISTENT_PARAM); 4967 case_WLAN(MESH_INVALID_SECURITY); 4968 case_WLAN(MESH_PATH_ERROR); 4969 case_WLAN(MESH_PATH_NOFORWARD); 4970 case_WLAN(MESH_PATH_DEST_UNREACHABLE); 4971 case_WLAN(MAC_EXISTS_IN_MBSS); 4972 case_WLAN(MESH_CHAN_REGULATORY); 4973 case_WLAN(MESH_CHAN); 4974 default: return "<unknown>"; 4975 } 4976 } 4977 4978 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, 4979 struct ieee80211_mgmt *mgmt, size_t len) 4980 { 4981 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4982 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); 4983 4984 lockdep_assert_wiphy(sdata->local->hw.wiphy); 4985 4986 if (len < 24 + 2) 4987 return; 4988 4989 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) { 4990 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code); 4991 return; 4992 } 4993 4994 if (ifmgd->associated && 4995 ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr)) { 4996 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", 4997 sdata->vif.cfg.ap_addr, reason_code, 4998 ieee80211_get_reason_code_string(reason_code)); 4999 5000 ieee80211_set_disassoc(sdata, 0, 0, false, NULL); 5001 5002 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, 5003 reason_code, false); 5004 return; 5005 } 5006 5007 if (ifmgd->assoc_data && 5008 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->ap_addr)) { 5009 sdata_info(sdata, 5010 "deauthenticated from %pM while associating (Reason: %u=%s)\n", 5011 ifmgd->assoc_data->ap_addr, reason_code, 5012 ieee80211_get_reason_code_string(reason_code)); 5013 5014 ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON); 5015 5016 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); 5017 return; 5018 } 5019 } 5020 5021 5022 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, 5023 struct ieee80211_mgmt *mgmt, size_t len) 5024 { 5025 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 5026 u16 reason_code; 5027 5028 lockdep_assert_wiphy(sdata->local->hw.wiphy); 5029 5030 if (len < 24 + 2) 5031 return; 5032 5033 if (!ifmgd->associated || 5034 !ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr)) 5035 return; 5036 5037 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); 5038 5039 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) { 5040 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code); 5041 return; 5042 } 5043 5044 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n", 5045 sdata->vif.cfg.ap_addr, reason_code, 5046 ieee80211_get_reason_code_string(reason_code)); 5047 5048 ieee80211_set_disassoc(sdata, 0, 0, false, NULL); 5049 5050 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code, 5051 false); 5052 } 5053 5054 static bool ieee80211_twt_req_supported(struct ieee80211_sub_if_data *sdata, 5055 struct ieee80211_supported_band *sband, 5056 const struct link_sta_info *link_sta, 5057 const struct ieee802_11_elems *elems) 5058 { 5059 const struct ieee80211_sta_he_cap *own_he_cap = 5060 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 5061 5062 if (elems->ext_capab_len < 10) 5063 return false; 5064 5065 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT)) 5066 return false; 5067 5068 return link_sta->pub->he_cap.he_cap_elem.mac_cap_info[0] & 5069 IEEE80211_HE_MAC_CAP0_TWT_RES && 5070 own_he_cap && 5071 (own_he_cap->he_cap_elem.mac_cap_info[0] & 5072 IEEE80211_HE_MAC_CAP0_TWT_REQ); 5073 } 5074 5075 static u64 ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata, 5076 struct ieee80211_supported_band *sband, 5077 struct ieee80211_link_data *link, 5078 struct link_sta_info *link_sta, 5079 struct ieee802_11_elems *elems) 5080 { 5081 bool twt = ieee80211_twt_req_supported(sdata, sband, link_sta, elems); 5082 5083 if (link->conf->twt_requester != twt) { 5084 link->conf->twt_requester = twt; 5085 return BSS_CHANGED_TWT; 5086 } 5087 return 0; 5088 } 5089 5090 static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata, 5091 struct ieee80211_bss_conf *bss_conf, 5092 struct ieee80211_supported_band *sband, 5093 struct link_sta_info *link_sta) 5094 { 5095 const struct ieee80211_sta_he_cap *own_he_cap = 5096 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 5097 5098 return bss_conf->he_support && 5099 (link_sta->pub->he_cap.he_cap_elem.mac_cap_info[2] & 5100 IEEE80211_HE_MAC_CAP2_BCAST_TWT) && 5101 own_he_cap && 5102 (own_he_cap->he_cap_elem.mac_cap_info[2] & 5103 IEEE80211_HE_MAC_CAP2_BCAST_TWT); 5104 } 5105 5106 static void ieee80211_epcs_changed(struct ieee80211_sub_if_data *sdata, 5107 bool enabled) 5108 { 5109 /* in any case this is called, dialog token should be reset */ 5110 sdata->u.mgd.epcs.dialog_token = 0; 5111 5112 if (sdata->u.mgd.epcs.enabled == enabled) 5113 return; 5114 5115 sdata->u.mgd.epcs.enabled = enabled; 5116 cfg80211_epcs_changed(sdata->dev, enabled); 5117 } 5118 5119 static void ieee80211_epcs_teardown(struct ieee80211_sub_if_data *sdata) 5120 { 5121 struct ieee80211_local *local = sdata->local; 5122 u8 link_id; 5123 5124 if (!sdata->u.mgd.epcs.enabled) 5125 return; 5126 5127 lockdep_assert_wiphy(local->hw.wiphy); 5128 5129 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 5130 struct ieee802_11_elems *elems; 5131 struct ieee80211_link_data *link; 5132 const struct cfg80211_bss_ies *ies; 5133 bool ret; 5134 5135 rcu_read_lock(); 5136 5137 link = sdata_dereference(sdata->link[link_id], sdata); 5138 if (!link || !link->conf || !link->conf->bss) { 5139 rcu_read_unlock(); 5140 continue; 5141 } 5142 5143 if (link->u.mgd.disable_wmm_tracking) { 5144 rcu_read_unlock(); 5145 ieee80211_set_wmm_default(link, false, false); 5146 continue; 5147 } 5148 5149 ies = rcu_dereference(link->conf->bss->beacon_ies); 5150 if (!ies) { 5151 rcu_read_unlock(); 5152 ieee80211_set_wmm_default(link, false, false); 5153 continue; 5154 } 5155 5156 elems = ieee802_11_parse_elems(ies->data, ies->len, false, 5157 NULL); 5158 if (!elems) { 5159 rcu_read_unlock(); 5160 ieee80211_set_wmm_default(link, false, false); 5161 continue; 5162 } 5163 5164 ret = _ieee80211_sta_wmm_params(local, link, 5165 elems->wmm_param, 5166 elems->wmm_param_len, 5167 elems->mu_edca_param_set); 5168 5169 kfree(elems); 5170 rcu_read_unlock(); 5171 5172 if (!ret) { 5173 ieee80211_set_wmm_default(link, false, false); 5174 continue; 5175 } 5176 5177 ieee80211_mgd_set_link_qos_params(link); 5178 ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_QOS); 5179 } 5180 } 5181 5182 static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link, 5183 struct link_sta_info *link_sta, 5184 struct cfg80211_bss *cbss, 5185 struct ieee80211_mgmt *mgmt, 5186 const u8 *elem_start, 5187 unsigned int elem_len, 5188 u64 *changed) 5189 { 5190 struct ieee80211_sub_if_data *sdata = link->sdata; 5191 struct ieee80211_mgd_assoc_data *assoc_data = 5192 sdata->u.mgd.assoc_data ?: sdata->u.mgd.reconf.add_links_data; 5193 struct ieee80211_bss_conf *bss_conf = link->conf; 5194 struct ieee80211_local *local = sdata->local; 5195 unsigned int link_id = link->link_id; 5196 struct ieee80211_elems_parse_params parse_params = { 5197 .mode = link->u.mgd.conn.mode, 5198 .start = elem_start, 5199 .len = elem_len, 5200 .link_id = link_id == assoc_data->assoc_link_id ? -1 : link_id, 5201 .from_ap = true, 5202 }; 5203 bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ; 5204 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ; 5205 bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ; 5206 const struct cfg80211_bss_ies *bss_ies = NULL; 5207 struct ieee80211_supported_band *sband; 5208 struct ieee802_11_elems *elems; 5209 const __le16 prof_bss_param_ch_present = 5210 cpu_to_le16(IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT); 5211 u16 capab_info; 5212 bool ret; 5213 5214 elems = ieee802_11_parse_elems_full(&parse_params); 5215 if (!elems) 5216 return false; 5217 5218 if (link_id == assoc_data->assoc_link_id) { 5219 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); 5220 5221 /* 5222 * we should not get to this flow unless the association was 5223 * successful, so set the status directly to success 5224 */ 5225 assoc_data->link[link_id].status = WLAN_STATUS_SUCCESS; 5226 if (elems->ml_basic) { 5227 int bss_param_ch_cnt = 5228 ieee80211_mle_get_bss_param_ch_cnt((const void *)elems->ml_basic); 5229 5230 if (bss_param_ch_cnt < 0) { 5231 ret = false; 5232 goto out; 5233 } 5234 bss_conf->bss_param_ch_cnt = bss_param_ch_cnt; 5235 bss_conf->bss_param_ch_cnt_link_id = link_id; 5236 } 5237 } else if (elems->parse_error & IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC || 5238 !elems->prof || 5239 !(elems->prof->control & prof_bss_param_ch_present)) { 5240 ret = false; 5241 goto out; 5242 } else { 5243 const u8 *ptr = elems->prof->variable + 5244 elems->prof->sta_info_len - 1; 5245 int bss_param_ch_cnt; 5246 5247 /* 5248 * During parsing, we validated that these fields exist, 5249 * otherwise elems->prof would have been set to NULL. 5250 */ 5251 capab_info = get_unaligned_le16(ptr); 5252 assoc_data->link[link_id].status = get_unaligned_le16(ptr + 2); 5253 bss_param_ch_cnt = 5254 ieee80211_mle_basic_sta_prof_bss_param_ch_cnt(elems->prof); 5255 bss_conf->bss_param_ch_cnt = bss_param_ch_cnt; 5256 bss_conf->bss_param_ch_cnt_link_id = link_id; 5257 5258 if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) { 5259 link_info(link, "association response status code=%u\n", 5260 assoc_data->link[link_id].status); 5261 ret = true; 5262 goto out; 5263 } 5264 } 5265 5266 if (!is_s1g && !elems->supp_rates) { 5267 sdata_info(sdata, "no SuppRates element in AssocResp\n"); 5268 ret = false; 5269 goto out; 5270 } 5271 5272 link->u.mgd.tdls_chan_switch_prohibited = 5273 elems->ext_capab && elems->ext_capab_len >= 5 && 5274 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); 5275 5276 /* 5277 * Some APs are erroneously not including some information in their 5278 * (re)association response frames. Try to recover by using the data 5279 * from the beacon or probe response. This seems to afflict mobile 5280 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", 5281 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. 5282 */ 5283 if (!ieee80211_hw_check(&local->hw, STRICT) && !is_6ghz && 5284 ((assoc_data->wmm && !elems->wmm_param) || 5285 (link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT && 5286 (!elems->ht_cap_elem || !elems->ht_operation)) || 5287 (is_5ghz && link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT && 5288 (!elems->vht_cap_elem || !elems->vht_operation)))) { 5289 const struct cfg80211_bss_ies *ies; 5290 struct ieee802_11_elems *bss_elems; 5291 5292 rcu_read_lock(); 5293 ies = rcu_dereference(cbss->ies); 5294 if (ies) 5295 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, 5296 GFP_ATOMIC); 5297 rcu_read_unlock(); 5298 if (!bss_ies) { 5299 ret = false; 5300 goto out; 5301 } 5302 5303 parse_params.start = bss_ies->data; 5304 parse_params.len = bss_ies->len; 5305 parse_params.bss = cbss; 5306 parse_params.link_id = -1; 5307 bss_elems = ieee802_11_parse_elems_full(&parse_params); 5308 if (!bss_elems) { 5309 ret = false; 5310 goto out; 5311 } 5312 5313 if (assoc_data->wmm && 5314 !elems->wmm_param && bss_elems->wmm_param) { 5315 elems->wmm_param = bss_elems->wmm_param; 5316 sdata_info(sdata, 5317 "AP bug: WMM param missing from AssocResp\n"); 5318 } 5319 5320 /* 5321 * Also check if we requested HT/VHT, otherwise the AP doesn't 5322 * have to include the IEs in the (re)association response. 5323 */ 5324 if (!elems->ht_cap_elem && bss_elems->ht_cap_elem && 5325 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT) { 5326 elems->ht_cap_elem = bss_elems->ht_cap_elem; 5327 sdata_info(sdata, 5328 "AP bug: HT capability missing from AssocResp\n"); 5329 } 5330 if (!elems->ht_operation && bss_elems->ht_operation && 5331 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT) { 5332 elems->ht_operation = bss_elems->ht_operation; 5333 sdata_info(sdata, 5334 "AP bug: HT operation missing from AssocResp\n"); 5335 } 5336 5337 if (is_5ghz) { 5338 if (!elems->vht_cap_elem && bss_elems->vht_cap_elem && 5339 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) { 5340 elems->vht_cap_elem = bss_elems->vht_cap_elem; 5341 sdata_info(sdata, 5342 "AP bug: VHT capa missing from AssocResp\n"); 5343 } 5344 5345 if (!elems->vht_operation && bss_elems->vht_operation && 5346 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) { 5347 elems->vht_operation = bss_elems->vht_operation; 5348 sdata_info(sdata, 5349 "AP bug: VHT operation missing from AssocResp\n"); 5350 } 5351 } 5352 kfree(bss_elems); 5353 } 5354 5355 /* 5356 * We previously checked these in the beacon/probe response, so 5357 * they should be present here. This is just a safety net. 5358 * Note that the ieee80211_config_bw() below would also check 5359 * for this (and more), but this has better error reporting. 5360 */ 5361 if (!is_6ghz && link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT && 5362 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) { 5363 sdata_info(sdata, 5364 "HT AP is missing WMM params or HT capability/operation\n"); 5365 ret = false; 5366 goto out; 5367 } 5368 5369 if (is_5ghz && link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT && 5370 (!elems->vht_cap_elem || !elems->vht_operation)) { 5371 sdata_info(sdata, 5372 "VHT AP is missing VHT capability/operation\n"); 5373 ret = false; 5374 goto out; 5375 } 5376 5377 /* check/update if AP changed anything in assoc response vs. scan */ 5378 if (ieee80211_config_bw(link, elems, 5379 link_id == assoc_data->assoc_link_id, 5380 changed, 5381 le16_to_cpu(mgmt->frame_control) & 5382 IEEE80211_FCTL_STYPE)) { 5383 ret = false; 5384 goto out; 5385 } 5386 5387 if (WARN_ON(!link->conf->chanreq.oper.chan)) { 5388 ret = false; 5389 goto out; 5390 } 5391 sband = local->hw.wiphy->bands[link->conf->chanreq.oper.chan->band]; 5392 5393 /* Set up internal HT/VHT capabilities */ 5394 if (elems->ht_cap_elem && link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT) 5395 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 5396 elems->ht_cap_elem, 5397 link_sta); 5398 5399 if (elems->vht_cap_elem && 5400 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) { 5401 const struct ieee80211_vht_cap *bss_vht_cap = NULL; 5402 const struct cfg80211_bss_ies *ies; 5403 5404 /* 5405 * Cisco AP module 9115 with FW 17.3 has a bug and sends a 5406 * too large maximum MPDU length in the association response 5407 * (indicating 12k) that it cannot actually process ... 5408 * Work around that. 5409 */ 5410 rcu_read_lock(); 5411 ies = rcu_dereference(cbss->ies); 5412 if (ies) { 5413 const struct element *elem; 5414 5415 elem = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, 5416 ies->data, ies->len); 5417 if (elem && elem->datalen >= sizeof(*bss_vht_cap)) 5418 bss_vht_cap = (const void *)elem->data; 5419 } 5420 5421 if (ieee80211_hw_check(&local->hw, STRICT) && 5422 (!bss_vht_cap || memcmp(bss_vht_cap, elems->vht_cap_elem, 5423 sizeof(*bss_vht_cap)))) { 5424 rcu_read_unlock(); 5425 ret = false; 5426 link_info(link, "VHT capabilities mismatch\n"); 5427 goto out; 5428 } 5429 5430 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 5431 elems->vht_cap_elem, 5432 bss_vht_cap, link_sta); 5433 rcu_read_unlock(); 5434 } 5435 5436 if (elems->he_operation && 5437 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HE && 5438 elems->he_cap) { 5439 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, 5440 elems->he_cap, 5441 elems->he_cap_len, 5442 elems->he_6ghz_capa, 5443 link_sta); 5444 5445 bss_conf->he_support = link_sta->pub->he_cap.has_he; 5446 if (elems->rsnx && elems->rsnx_len && 5447 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) && 5448 wiphy_ext_feature_isset(local->hw.wiphy, 5449 NL80211_EXT_FEATURE_PROTECTED_TWT)) 5450 bss_conf->twt_protected = true; 5451 else 5452 bss_conf->twt_protected = false; 5453 5454 *changed |= ieee80211_recalc_twt_req(sdata, sband, link, 5455 link_sta, elems); 5456 5457 if (elems->eht_operation && elems->eht_cap && 5458 link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_EHT) { 5459 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband, 5460 elems->he_cap, 5461 elems->he_cap_len, 5462 elems->eht_cap, 5463 elems->eht_cap_len, 5464 link_sta); 5465 5466 bss_conf->eht_support = link_sta->pub->eht_cap.has_eht; 5467 bss_conf->epcs_support = bss_conf->eht_support && 5468 !!(elems->eht_cap->fixed.mac_cap_info[0] & 5469 IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS); 5470 5471 /* EPCS might be already enabled but a new added link 5472 * does not support EPCS. This should not really happen 5473 * in practice. 5474 */ 5475 if (sdata->u.mgd.epcs.enabled && 5476 !bss_conf->epcs_support) 5477 ieee80211_epcs_teardown(sdata); 5478 } else { 5479 bss_conf->eht_support = false; 5480 bss_conf->epcs_support = false; 5481 } 5482 } else { 5483 bss_conf->he_support = false; 5484 bss_conf->twt_requester = false; 5485 bss_conf->twt_protected = false; 5486 bss_conf->eht_support = false; 5487 bss_conf->epcs_support = false; 5488 } 5489 5490 if (elems->s1g_oper && 5491 link->u.mgd.conn.mode == IEEE80211_CONN_MODE_S1G && 5492 elems->s1g_capab) 5493 ieee80211_s1g_cap_to_sta_s1g_cap(sdata, elems->s1g_capab, 5494 link_sta); 5495 5496 bss_conf->twt_broadcast = 5497 ieee80211_twt_bcast_support(sdata, bss_conf, sband, link_sta); 5498 5499 if (bss_conf->he_support) { 5500 bss_conf->he_bss_color.color = 5501 le32_get_bits(elems->he_operation->he_oper_params, 5502 IEEE80211_HE_OPERATION_BSS_COLOR_MASK); 5503 bss_conf->he_bss_color.partial = 5504 le32_get_bits(elems->he_operation->he_oper_params, 5505 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR); 5506 bss_conf->he_bss_color.enabled = 5507 !le32_get_bits(elems->he_operation->he_oper_params, 5508 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 5509 5510 if (bss_conf->he_bss_color.enabled) 5511 *changed |= BSS_CHANGED_HE_BSS_COLOR; 5512 5513 bss_conf->htc_trig_based_pkt_ext = 5514 le32_get_bits(elems->he_operation->he_oper_params, 5515 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); 5516 bss_conf->frame_time_rts_th = 5517 le32_get_bits(elems->he_operation->he_oper_params, 5518 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 5519 5520 bss_conf->uora_exists = !!elems->uora_element; 5521 if (elems->uora_element) 5522 bss_conf->uora_ocw_range = elems->uora_element[0]; 5523 5524 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation); 5525 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr); 5526 /* TODO: OPEN: what happens if BSS color disable is set? */ 5527 } 5528 5529 if (cbss->transmitted_bss) { 5530 bss_conf->nontransmitted = true; 5531 ether_addr_copy(bss_conf->transmitter_bssid, 5532 cbss->transmitted_bss->bssid); 5533 bss_conf->bssid_indicator = cbss->max_bssid_indicator; 5534 bss_conf->bssid_index = cbss->bssid_index; 5535 } 5536 5537 /* 5538 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data 5539 * in their association response, so ignore that data for our own 5540 * configuration. If it changed since the last beacon, we'll get the 5541 * next beacon and update then. 5542 */ 5543 5544 /* 5545 * If an operating mode notification IE is present, override the 5546 * NSS calculation (that would be done in rate_control_rate_init()) 5547 * and use the # of streams from that element. 5548 */ 5549 if (elems->opmode_notif && 5550 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { 5551 u8 nss; 5552 5553 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; 5554 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; 5555 nss += 1; 5556 link_sta->pub->rx_nss = nss; 5557 } 5558 5559 /* 5560 * Always handle WMM once after association regardless 5561 * of the first value the AP uses. Setting -1 here has 5562 * that effect because the AP values is an unsigned 5563 * 4-bit value. 5564 */ 5565 link->u.mgd.wmm_last_param_set = -1; 5566 link->u.mgd.mu_edca_last_param_set = -1; 5567 5568 if (link->u.mgd.disable_wmm_tracking) { 5569 ieee80211_set_wmm_default(link, false, false); 5570 } else if (!ieee80211_sta_wmm_params(local, link, elems->wmm_param, 5571 elems->wmm_param_len, 5572 elems->mu_edca_param_set)) { 5573 /* still enable QoS since we might have HT/VHT */ 5574 ieee80211_set_wmm_default(link, false, true); 5575 /* disable WMM tracking in this case to disable 5576 * tracking WMM parameter changes in the beacon if 5577 * the parameters weren't actually valid. Doing so 5578 * avoids changing parameters very strangely when 5579 * the AP is going back and forth between valid and 5580 * invalid parameters. 5581 */ 5582 link->u.mgd.disable_wmm_tracking = true; 5583 } 5584 5585 if (elems->max_idle_period_ie) { 5586 bss_conf->max_idle_period = 5587 le16_to_cpu(elems->max_idle_period_ie->max_idle_period); 5588 bss_conf->protected_keep_alive = 5589 !!(elems->max_idle_period_ie->idle_options & 5590 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE); 5591 *changed |= BSS_CHANGED_KEEP_ALIVE; 5592 } else { 5593 bss_conf->max_idle_period = 0; 5594 bss_conf->protected_keep_alive = false; 5595 } 5596 5597 /* set assoc capability (AID was already set earlier), 5598 * ieee80211_set_associated() will tell the driver */ 5599 bss_conf->assoc_capability = capab_info; 5600 5601 ret = true; 5602 out: 5603 kfree(elems); 5604 kfree(bss_ies); 5605 return ret; 5606 } 5607 5608 static int ieee80211_mgd_setup_link_sta(struct ieee80211_link_data *link, 5609 struct sta_info *sta, 5610 struct link_sta_info *link_sta, 5611 struct cfg80211_bss *cbss) 5612 { 5613 struct ieee80211_sub_if_data *sdata = link->sdata; 5614 struct ieee80211_local *local = sdata->local; 5615 struct ieee80211_bss *bss = (void *)cbss->priv; 5616 u32 rates = 0, basic_rates = 0; 5617 bool have_higher_than_11mbit = false; 5618 int min_rate = INT_MAX, min_rate_index = -1; 5619 struct ieee80211_supported_band *sband; 5620 5621 memcpy(link_sta->addr, cbss->bssid, ETH_ALEN); 5622 memcpy(link_sta->pub->addr, cbss->bssid, ETH_ALEN); 5623 5624 /* TODO: S1G Basic Rate Set is expressed elsewhere */ 5625 if (cbss->channel->band == NL80211_BAND_S1GHZ) { 5626 ieee80211_s1g_sta_rate_init(sta); 5627 return 0; 5628 } 5629 5630 sband = local->hw.wiphy->bands[cbss->channel->band]; 5631 5632 ieee80211_get_rates(sband, bss->supp_rates, bss->supp_rates_len, 5633 NULL, 0, 5634 &rates, &basic_rates, NULL, 5635 &have_higher_than_11mbit, 5636 &min_rate, &min_rate_index); 5637 5638 /* 5639 * This used to be a workaround for basic rates missing 5640 * in the association response frame. Now that we no 5641 * longer use the basic rates from there, it probably 5642 * doesn't happen any more, but keep the workaround so 5643 * in case some *other* APs are buggy in different ways 5644 * we can connect -- with a warning. 5645 * Allow this workaround only in case the AP provided at least 5646 * one rate. 5647 */ 5648 if (min_rate_index < 0) { 5649 link_info(link, "No legacy rates in association response\n"); 5650 return -EINVAL; 5651 } else if (!basic_rates) { 5652 link_info(link, "No basic rates, using min rate instead\n"); 5653 basic_rates = BIT(min_rate_index); 5654 } 5655 5656 if (rates) 5657 link_sta->pub->supp_rates[cbss->channel->band] = rates; 5658 else 5659 link_info(link, "No rates found, keeping mandatory only\n"); 5660 5661 link->conf->basic_rates = basic_rates; 5662 5663 /* cf. IEEE 802.11 9.2.12 */ 5664 link->operating_11g_mode = sband->band == NL80211_BAND_2GHZ && 5665 have_higher_than_11mbit; 5666 5667 return 0; 5668 } 5669 5670 static u8 ieee80211_max_rx_chains(struct ieee80211_link_data *link, 5671 struct cfg80211_bss *cbss) 5672 { 5673 struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp; 5674 const struct element *ht_cap_elem, *vht_cap_elem; 5675 const struct cfg80211_bss_ies *ies; 5676 const struct ieee80211_ht_cap *ht_cap; 5677 const struct ieee80211_vht_cap *vht_cap; 5678 const struct ieee80211_he_cap_elem *he_cap; 5679 const struct element *he_cap_elem; 5680 u16 mcs_80_map, mcs_160_map; 5681 int i, mcs_nss_size; 5682 bool support_160; 5683 u8 chains = 1; 5684 5685 if (link->u.mgd.conn.mode < IEEE80211_CONN_MODE_HT) 5686 return chains; 5687 5688 ht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_CAPABILITY); 5689 if (ht_cap_elem && ht_cap_elem->datalen >= sizeof(*ht_cap)) { 5690 ht_cap = (void *)ht_cap_elem->data; 5691 chains = ieee80211_mcs_to_chains(&ht_cap->mcs); 5692 /* 5693 * TODO: use "Tx Maximum Number Spatial Streams Supported" and 5694 * "Tx Unequal Modulation Supported" fields. 5695 */ 5696 } 5697 5698 if (link->u.mgd.conn.mode < IEEE80211_CONN_MODE_VHT) 5699 return chains; 5700 5701 vht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY); 5702 if (vht_cap_elem && vht_cap_elem->datalen >= sizeof(*vht_cap)) { 5703 u8 nss; 5704 u16 tx_mcs_map; 5705 5706 vht_cap = (void *)vht_cap_elem->data; 5707 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); 5708 for (nss = 8; nss > 0; nss--) { 5709 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != 5710 IEEE80211_VHT_MCS_NOT_SUPPORTED) 5711 break; 5712 } 5713 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ 5714 chains = max(chains, nss); 5715 } 5716 5717 if (link->u.mgd.conn.mode < IEEE80211_CONN_MODE_HE) 5718 return chains; 5719 5720 ies = rcu_dereference(cbss->ies); 5721 he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, 5722 ies->data, ies->len); 5723 5724 if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap)) 5725 return chains; 5726 5727 /* skip one byte ext_tag_id */ 5728 he_cap = (void *)(he_cap_elem->data + 1); 5729 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap); 5730 5731 /* invalid HE IE */ 5732 if (he_cap_elem->datalen < 1 + mcs_nss_size + sizeof(*he_cap)) 5733 return chains; 5734 5735 /* mcs_nss is right after he_cap info */ 5736 he_mcs_nss_supp = (void *)(he_cap + 1); 5737 5738 mcs_80_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80); 5739 5740 for (i = 7; i >= 0; i--) { 5741 u8 mcs_80 = mcs_80_map >> (2 * i) & 3; 5742 5743 if (mcs_80 != IEEE80211_VHT_MCS_NOT_SUPPORTED) { 5744 chains = max_t(u8, chains, i + 1); 5745 break; 5746 } 5747 } 5748 5749 support_160 = he_cap->phy_cap_info[0] & 5750 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 5751 5752 if (!support_160) 5753 return chains; 5754 5755 mcs_160_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_160); 5756 for (i = 7; i >= 0; i--) { 5757 u8 mcs_160 = mcs_160_map >> (2 * i) & 3; 5758 5759 if (mcs_160 != IEEE80211_VHT_MCS_NOT_SUPPORTED) { 5760 chains = max_t(u8, chains, i + 1); 5761 break; 5762 } 5763 } 5764 5765 return chains; 5766 } 5767 5768 static void 5769 ieee80211_determine_our_sta_mode(struct ieee80211_sub_if_data *sdata, 5770 struct ieee80211_supported_band *sband, 5771 struct cfg80211_assoc_request *req, 5772 bool wmm_used, int link_id, 5773 struct ieee80211_conn_settings *conn) 5774 { 5775 struct ieee80211_sta_ht_cap sta_ht_cap = sband->ht_cap; 5776 bool is_5ghz = sband->band == NL80211_BAND_5GHZ; 5777 bool is_6ghz = sband->band == NL80211_BAND_6GHZ; 5778 const struct ieee80211_sta_he_cap *he_cap; 5779 const struct ieee80211_sta_eht_cap *eht_cap; 5780 struct ieee80211_sta_vht_cap vht_cap; 5781 5782 if (sband->band == NL80211_BAND_S1GHZ) { 5783 conn->mode = IEEE80211_CONN_MODE_S1G; 5784 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 5785 mlme_dbg(sdata, "operating as S1G STA\n"); 5786 return; 5787 } 5788 5789 conn->mode = IEEE80211_CONN_MODE_LEGACY; 5790 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 5791 5792 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); 5793 5794 if (req && req->flags & ASSOC_REQ_DISABLE_HT) { 5795 mlme_link_id_dbg(sdata, link_id, 5796 "HT disabled by flag, limiting to legacy\n"); 5797 goto out; 5798 } 5799 5800 if (!wmm_used) { 5801 mlme_link_id_dbg(sdata, link_id, 5802 "WMM/QoS not supported, limiting to legacy\n"); 5803 goto out; 5804 } 5805 5806 if (req) { 5807 unsigned int i; 5808 5809 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { 5810 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || 5811 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || 5812 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { 5813 netdev_info(sdata->dev, 5814 "WEP/TKIP use, limiting to legacy\n"); 5815 goto out; 5816 } 5817 } 5818 } 5819 5820 if (!sta_ht_cap.ht_supported && !is_6ghz) { 5821 mlme_link_id_dbg(sdata, link_id, 5822 "HT not supported (and not on 6 GHz), limiting to legacy\n"); 5823 goto out; 5824 } 5825 5826 /* HT is fine */ 5827 conn->mode = IEEE80211_CONN_MODE_HT; 5828 conn->bw_limit = sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? 5829 IEEE80211_CONN_BW_LIMIT_40 : 5830 IEEE80211_CONN_BW_LIMIT_20; 5831 5832 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); 5833 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); 5834 5835 if (req && req->flags & ASSOC_REQ_DISABLE_VHT) { 5836 mlme_link_id_dbg(sdata, link_id, 5837 "VHT disabled by flag, limiting to HT\n"); 5838 goto out; 5839 } 5840 5841 if (vht_cap.vht_supported && is_5ghz) { 5842 bool have_80mhz = false; 5843 unsigned int i; 5844 5845 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) { 5846 mlme_link_id_dbg(sdata, link_id, 5847 "no 40 MHz support on 5 GHz, limiting to HT\n"); 5848 goto out; 5849 } 5850 5851 /* Allow VHT if at least one channel on the sband supports 80 MHz */ 5852 for (i = 0; i < sband->n_channels; i++) { 5853 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 5854 IEEE80211_CHAN_NO_80MHZ)) 5855 continue; 5856 5857 have_80mhz = true; 5858 break; 5859 } 5860 5861 if (!have_80mhz) { 5862 mlme_link_id_dbg(sdata, link_id, 5863 "no 80 MHz channel support on 5 GHz, limiting to HT\n"); 5864 goto out; 5865 } 5866 } else if (is_5ghz) { /* !vht_supported but on 5 GHz */ 5867 mlme_link_id_dbg(sdata, link_id, 5868 "no VHT support on 5 GHz, limiting to HT\n"); 5869 goto out; 5870 } 5871 5872 /* VHT - if we have - is fine, including 80 MHz, check 160 below again */ 5873 if (sband->band != NL80211_BAND_2GHZ) { 5874 conn->mode = IEEE80211_CONN_MODE_VHT; 5875 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 5876 } 5877 5878 if (is_5ghz && 5879 !(vht_cap.cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 5880 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ))) { 5881 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 5882 mlme_link_id_dbg(sdata, link_id, 5883 "no VHT 160 MHz capability on 5 GHz, limiting to 80 MHz"); 5884 } 5885 5886 if (req && req->flags & ASSOC_REQ_DISABLE_HE) { 5887 mlme_link_id_dbg(sdata, link_id, 5888 "HE disabled by flag, limiting to HT/VHT\n"); 5889 goto out; 5890 } 5891 5892 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 5893 if (!he_cap) { 5894 WARN_ON(is_6ghz); 5895 mlme_link_id_dbg(sdata, link_id, 5896 "no HE support, limiting to HT/VHT\n"); 5897 goto out; 5898 } 5899 5900 /* so we have HE */ 5901 conn->mode = IEEE80211_CONN_MODE_HE; 5902 5903 /* check bandwidth */ 5904 switch (sband->band) { 5905 default: 5906 case NL80211_BAND_2GHZ: 5907 if (he_cap->he_cap_elem.phy_cap_info[0] & 5908 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G) 5909 break; 5910 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 5911 mlme_link_id_dbg(sdata, link_id, 5912 "no 40 MHz HE cap in 2.4 GHz, limiting to 20 MHz\n"); 5913 break; 5914 case NL80211_BAND_5GHZ: 5915 if (!(he_cap->he_cap_elem.phy_cap_info[0] & 5916 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)) { 5917 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 5918 mlme_link_id_dbg(sdata, link_id, 5919 "no 40/80 MHz HE cap in 5 GHz, limiting to 20 MHz\n"); 5920 break; 5921 } 5922 if (!(he_cap->he_cap_elem.phy_cap_info[0] & 5923 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)) { 5924 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 5925 conn->bw_limit, 5926 IEEE80211_CONN_BW_LIMIT_80); 5927 mlme_link_id_dbg(sdata, link_id, 5928 "no 160 MHz HE cap in 5 GHz, limiting to 80 MHz\n"); 5929 } 5930 break; 5931 case NL80211_BAND_6GHZ: 5932 if (he_cap->he_cap_elem.phy_cap_info[0] & 5933 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) 5934 break; 5935 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 5936 conn->bw_limit, 5937 IEEE80211_CONN_BW_LIMIT_80); 5938 mlme_link_id_dbg(sdata, link_id, 5939 "no 160 MHz HE cap in 6 GHz, limiting to 80 MHz\n"); 5940 break; 5941 } 5942 5943 if (req && req->flags & ASSOC_REQ_DISABLE_EHT) { 5944 mlme_link_id_dbg(sdata, link_id, 5945 "EHT disabled by flag, limiting to HE\n"); 5946 goto out; 5947 } 5948 5949 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 5950 if (!eht_cap) { 5951 mlme_link_id_dbg(sdata, link_id, 5952 "no EHT support, limiting to HE\n"); 5953 goto out; 5954 } 5955 5956 /* we have EHT */ 5957 5958 conn->mode = IEEE80211_CONN_MODE_EHT; 5959 5960 /* check bandwidth */ 5961 if (is_6ghz && 5962 eht_cap->eht_cap_elem.phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ) 5963 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_320; 5964 else if (is_6ghz) 5965 mlme_link_id_dbg(sdata, link_id, 5966 "no EHT 320 MHz cap in 6 GHz, limiting to 160 MHz\n"); 5967 5968 out: 5969 mlme_link_id_dbg(sdata, link_id, 5970 "determined local STA to be %s, BW limited to %d MHz\n", 5971 ieee80211_conn_mode_str(conn->mode), 5972 20 * (1 << conn->bw_limit)); 5973 } 5974 5975 static void 5976 ieee80211_determine_our_sta_mode_auth(struct ieee80211_sub_if_data *sdata, 5977 struct ieee80211_supported_band *sband, 5978 struct cfg80211_auth_request *req, 5979 bool wmm_used, 5980 struct ieee80211_conn_settings *conn) 5981 { 5982 ieee80211_determine_our_sta_mode(sdata, sband, NULL, wmm_used, 5983 req->link_id > 0 ? req->link_id : 0, 5984 conn); 5985 } 5986 5987 static void 5988 ieee80211_determine_our_sta_mode_assoc(struct ieee80211_sub_if_data *sdata, 5989 struct ieee80211_supported_band *sband, 5990 struct cfg80211_assoc_request *req, 5991 bool wmm_used, int link_id, 5992 struct ieee80211_conn_settings *conn) 5993 { 5994 struct ieee80211_conn_settings tmp; 5995 5996 WARN_ON(!req); 5997 5998 ieee80211_determine_our_sta_mode(sdata, sband, req, wmm_used, link_id, 5999 &tmp); 6000 6001 conn->mode = min_t(enum ieee80211_conn_mode, 6002 conn->mode, tmp.mode); 6003 conn->bw_limit = min_t(enum ieee80211_conn_bw_limit, 6004 conn->bw_limit, tmp.bw_limit); 6005 } 6006 6007 static enum ieee80211_ap_reg_power 6008 ieee80211_ap_power_type(u8 control) 6009 { 6010 switch (u8_get_bits(control, IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) { 6011 case IEEE80211_6GHZ_CTRL_REG_LPI_AP: 6012 case IEEE80211_6GHZ_CTRL_REG_INDOOR_LPI_AP: 6013 return IEEE80211_REG_LPI_AP; 6014 case IEEE80211_6GHZ_CTRL_REG_SP_AP: 6015 case IEEE80211_6GHZ_CTRL_REG_INDOOR_SP_AP: 6016 case IEEE80211_6GHZ_CTRL_REG_INDOOR_SP_AP_OLD: 6017 return IEEE80211_REG_SP_AP; 6018 case IEEE80211_6GHZ_CTRL_REG_VLP_AP: 6019 return IEEE80211_REG_VLP_AP; 6020 default: 6021 return IEEE80211_REG_UNSET_AP; 6022 } 6023 } 6024 6025 static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, 6026 struct ieee80211_link_data *link, 6027 int link_id, 6028 struct cfg80211_bss *cbss, bool mlo, 6029 struct ieee80211_conn_settings *conn, 6030 unsigned long *userspace_selectors) 6031 { 6032 struct ieee80211_local *local = sdata->local; 6033 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ; 6034 struct ieee80211_chan_req chanreq = {}; 6035 struct cfg80211_chan_def ap_chandef; 6036 struct ieee802_11_elems *elems; 6037 int ret; 6038 6039 lockdep_assert_wiphy(local->hw.wiphy); 6040 6041 rcu_read_lock(); 6042 elems = ieee80211_determine_chan_mode(sdata, conn, cbss, link_id, 6043 &chanreq, &ap_chandef, 6044 userspace_selectors); 6045 6046 if (IS_ERR(elems)) { 6047 rcu_read_unlock(); 6048 return PTR_ERR(elems); 6049 } 6050 6051 if (mlo && !elems->ml_basic) { 6052 sdata_info(sdata, "Rejecting MLO as it is not supported by AP\n"); 6053 rcu_read_unlock(); 6054 kfree(elems); 6055 return -EINVAL; 6056 } 6057 6058 if (link && is_6ghz && conn->mode >= IEEE80211_CONN_MODE_HE) { 6059 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 6060 6061 if (elems->pwr_constr_elem) 6062 link->conf->pwr_reduction = *elems->pwr_constr_elem; 6063 6064 he_6ghz_oper = ieee80211_he_6ghz_oper(elems->he_operation); 6065 if (he_6ghz_oper) 6066 link->conf->power_type = 6067 ieee80211_ap_power_type(he_6ghz_oper->control); 6068 else 6069 link_info(link, 6070 "HE 6 GHz operation missing (on %d MHz), expect issues\n", 6071 cbss->channel->center_freq); 6072 6073 link->conf->tpe = elems->tpe; 6074 ieee80211_rearrange_tpe(&link->conf->tpe, &ap_chandef, 6075 &chanreq.oper); 6076 } 6077 rcu_read_unlock(); 6078 /* the element data was RCU protected so no longer valid anyway */ 6079 kfree(elems); 6080 elems = NULL; 6081 6082 if (!link) 6083 return 0; 6084 6085 rcu_read_lock(); 6086 link->needed_rx_chains = min(ieee80211_max_rx_chains(link, cbss), 6087 local->rx_chains); 6088 rcu_read_unlock(); 6089 6090 /* 6091 * If this fails (possibly due to channel context sharing 6092 * on incompatible channels, e.g. 80+80 and 160 sharing the 6093 * same control channel) try to use a smaller bandwidth. 6094 */ 6095 ret = ieee80211_link_use_channel(link, &chanreq, 6096 IEEE80211_CHANCTX_SHARED); 6097 6098 /* don't downgrade for 5 and 10 MHz channels, though. */ 6099 if (chanreq.oper.width == NL80211_CHAN_WIDTH_5 || 6100 chanreq.oper.width == NL80211_CHAN_WIDTH_10) 6101 return ret; 6102 6103 while (ret && chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT) { 6104 ieee80211_chanreq_downgrade(&chanreq, conn); 6105 6106 ret = ieee80211_link_use_channel(link, &chanreq, 6107 IEEE80211_CHANCTX_SHARED); 6108 } 6109 6110 return ret; 6111 } 6112 6113 static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies, 6114 u8 *dtim_count, u8 *dtim_period) 6115 { 6116 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len); 6117 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data, 6118 ies->len); 6119 const struct ieee80211_tim_ie *tim = NULL; 6120 const struct ieee80211_bssid_index *idx; 6121 bool valid = tim_ie && tim_ie[1] >= 2; 6122 6123 if (valid) 6124 tim = (void *)(tim_ie + 2); 6125 6126 if (dtim_count) 6127 *dtim_count = valid ? tim->dtim_count : 0; 6128 6129 if (dtim_period) 6130 *dtim_period = valid ? tim->dtim_period : 0; 6131 6132 /* Check if value is overridden by non-transmitted profile */ 6133 if (!idx_ie || idx_ie[1] < 3) 6134 return valid; 6135 6136 idx = (void *)(idx_ie + 2); 6137 6138 if (dtim_count) 6139 *dtim_count = idx->dtim_count; 6140 6141 if (dtim_period) 6142 *dtim_period = idx->dtim_period; 6143 6144 return true; 6145 } 6146 6147 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, 6148 struct ieee80211_mgmt *mgmt, 6149 struct ieee802_11_elems *elems, 6150 const u8 *elem_start, unsigned int elem_len) 6151 { 6152 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 6153 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; 6154 struct ieee80211_local *local = sdata->local; 6155 unsigned int link_id; 6156 struct sta_info *sta; 6157 u64 changed[IEEE80211_MLD_MAX_NUM_LINKS] = {}; 6158 u16 valid_links = 0, dormant_links = 0; 6159 int err; 6160 6161 lockdep_assert_wiphy(sdata->local->hw.wiphy); 6162 /* 6163 * station info was already allocated and inserted before 6164 * the association and should be available to us 6165 */ 6166 sta = sta_info_get(sdata, assoc_data->ap_addr); 6167 if (WARN_ON(!sta)) 6168 goto out_err; 6169 6170 sta->sta.spp_amsdu = assoc_data->spp_amsdu; 6171 6172 if (ieee80211_vif_is_mld(&sdata->vif)) { 6173 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 6174 if (!assoc_data->link[link_id].bss) 6175 continue; 6176 6177 valid_links |= BIT(link_id); 6178 if (assoc_data->link[link_id].disabled) 6179 dormant_links |= BIT(link_id); 6180 6181 if (link_id != assoc_data->assoc_link_id) { 6182 err = ieee80211_sta_allocate_link(sta, link_id); 6183 if (err) 6184 goto out_err; 6185 } 6186 } 6187 6188 ieee80211_vif_set_links(sdata, valid_links, dormant_links); 6189 } 6190 6191 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 6192 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 6193 struct ieee80211_link_data *link; 6194 struct link_sta_info *link_sta; 6195 6196 if (!cbss) 6197 continue; 6198 6199 link = sdata_dereference(sdata->link[link_id], sdata); 6200 if (WARN_ON(!link)) 6201 goto out_err; 6202 6203 if (ieee80211_vif_is_mld(&sdata->vif)) 6204 link_info(link, 6205 "local address %pM, AP link address %pM%s\n", 6206 link->conf->addr, 6207 assoc_data->link[link_id].bss->bssid, 6208 link_id == assoc_data->assoc_link_id ? 6209 " (assoc)" : ""); 6210 6211 link_sta = rcu_dereference_protected(sta->link[link_id], 6212 lockdep_is_held(&local->hw.wiphy->mtx)); 6213 if (WARN_ON(!link_sta)) 6214 goto out_err; 6215 6216 if (!link->u.mgd.have_beacon) { 6217 const struct cfg80211_bss_ies *ies; 6218 6219 rcu_read_lock(); 6220 ies = rcu_dereference(cbss->beacon_ies); 6221 if (ies) 6222 link->u.mgd.have_beacon = true; 6223 else 6224 ies = rcu_dereference(cbss->ies); 6225 ieee80211_get_dtim(ies, 6226 &link->conf->sync_dtim_count, 6227 &link->u.mgd.dtim_period); 6228 link->conf->beacon_int = cbss->beacon_interval; 6229 rcu_read_unlock(); 6230 } 6231 6232 link->conf->dtim_period = link->u.mgd.dtim_period ?: 1; 6233 6234 if (link_id != assoc_data->assoc_link_id) { 6235 link->u.mgd.conn = assoc_data->link[link_id].conn; 6236 6237 err = ieee80211_prep_channel(sdata, link, link_id, cbss, 6238 true, &link->u.mgd.conn, 6239 sdata->u.mgd.userspace_selectors); 6240 if (err) { 6241 link_info(link, "prep_channel failed\n"); 6242 goto out_err; 6243 } 6244 } 6245 6246 err = ieee80211_mgd_setup_link_sta(link, sta, link_sta, 6247 assoc_data->link[link_id].bss); 6248 if (err) 6249 goto out_err; 6250 6251 if (!ieee80211_assoc_config_link(link, link_sta, 6252 assoc_data->link[link_id].bss, 6253 mgmt, elem_start, elem_len, 6254 &changed[link_id])) 6255 goto out_err; 6256 6257 if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) { 6258 valid_links &= ~BIT(link_id); 6259 ieee80211_sta_remove_link(sta, link_id); 6260 continue; 6261 } 6262 6263 if (link_id != assoc_data->assoc_link_id) { 6264 err = ieee80211_sta_activate_link(sta, link_id); 6265 if (err) 6266 goto out_err; 6267 } 6268 } 6269 6270 /* links might have changed due to rejected ones, set them again */ 6271 ieee80211_vif_set_links(sdata, valid_links, dormant_links); 6272 6273 rate_control_rate_init_all_links(sta); 6274 6275 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { 6276 set_sta_flag(sta, WLAN_STA_MFP); 6277 sta->sta.mfp = true; 6278 } else { 6279 sta->sta.mfp = false; 6280 } 6281 6282 ieee80211_sta_set_max_amsdu_subframes(sta, elems->ext_capab, 6283 elems->ext_capab_len); 6284 6285 sta->sta.wme = (elems->wmm_param || elems->s1g_capab) && 6286 local->hw.queues >= IEEE80211_NUM_ACS; 6287 6288 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 6289 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) 6290 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 6291 if (err) { 6292 sdata_info(sdata, 6293 "failed to move station %pM to desired state\n", 6294 sta->sta.addr); 6295 WARN_ON(__sta_info_destroy(sta)); 6296 goto out_err; 6297 } 6298 6299 if (sdata->wdev.use_4addr) 6300 drv_sta_set_4addr(local, sdata, &sta->sta, true); 6301 6302 ieee80211_set_associated(sdata, assoc_data, changed); 6303 6304 /* 6305 * If we're using 4-addr mode, let the AP know that we're 6306 * doing so, so that it can create the STA VLAN on its side 6307 */ 6308 if (ifmgd->use_4addr) 6309 ieee80211_send_4addr_nullfunc(local, sdata); 6310 6311 /* 6312 * Start timer to probe the connection to the AP now. 6313 * Also start the timer that will detect beacon loss. 6314 */ 6315 ieee80211_sta_reset_beacon_monitor(sdata); 6316 ieee80211_sta_reset_conn_monitor(sdata); 6317 6318 return true; 6319 out_err: 6320 eth_zero_addr(sdata->vif.cfg.ap_addr); 6321 return false; 6322 } 6323 6324 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, 6325 struct ieee80211_mgmt *mgmt, 6326 size_t len) 6327 { 6328 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 6329 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; 6330 u16 capab_info, status_code, aid; 6331 struct ieee80211_elems_parse_params parse_params = { 6332 .bss = NULL, 6333 .link_id = -1, 6334 .from_ap = true, 6335 }; 6336 struct ieee802_11_elems *elems; 6337 int ac; 6338 const u8 *elem_start; 6339 unsigned int elem_len; 6340 bool reassoc; 6341 struct ieee80211_event event = { 6342 .type = MLME_EVENT, 6343 .u.mlme.data = ASSOC_EVENT, 6344 }; 6345 struct ieee80211_prep_tx_info info = {}; 6346 struct cfg80211_rx_assoc_resp_data resp = { 6347 .uapsd_queues = -1, 6348 }; 6349 u8 ap_mld_addr[ETH_ALEN] __aligned(2); 6350 unsigned int link_id; 6351 6352 lockdep_assert_wiphy(sdata->local->hw.wiphy); 6353 6354 if (!assoc_data) 6355 return; 6356 6357 info.link_id = assoc_data->assoc_link_id; 6358 6359 parse_params.mode = 6360 assoc_data->link[assoc_data->assoc_link_id].conn.mode; 6361 6362 if (!ether_addr_equal(assoc_data->ap_addr, mgmt->bssid) || 6363 !ether_addr_equal(assoc_data->ap_addr, mgmt->sa)) 6364 return; 6365 6366 /* 6367 * AssocResp and ReassocResp have identical structure, so process both 6368 * of them in this function. 6369 */ 6370 6371 if (len < 24 + 6) 6372 return; 6373 6374 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control); 6375 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); 6376 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); 6377 if (assoc_data->s1g) 6378 elem_start = mgmt->u.s1g_assoc_resp.variable; 6379 else 6380 elem_start = mgmt->u.assoc_resp.variable; 6381 6382 /* 6383 * Note: this may not be perfect, AP might misbehave - if 6384 * anyone needs to rely on perfect complete notification 6385 * with the exact right subtype, then we need to track what 6386 * we actually transmitted. 6387 */ 6388 info.subtype = reassoc ? IEEE80211_STYPE_REASSOC_REQ : 6389 IEEE80211_STYPE_ASSOC_REQ; 6390 6391 if (assoc_data->fils_kek_len && 6392 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0) 6393 return; 6394 6395 elem_len = len - (elem_start - (u8 *)mgmt); 6396 parse_params.start = elem_start; 6397 parse_params.len = elem_len; 6398 elems = ieee802_11_parse_elems_full(&parse_params); 6399 if (!elems) 6400 goto notify_driver; 6401 6402 if (elems->aid_resp) 6403 aid = le16_to_cpu(elems->aid_resp->aid); 6404 else if (assoc_data->s1g) 6405 aid = 0; /* TODO */ 6406 else 6407 aid = le16_to_cpu(mgmt->u.assoc_resp.aid); 6408 6409 /* 6410 * The 5 MSB of the AID field are reserved 6411 * (802.11-2016 9.4.1.8 AID field) 6412 */ 6413 aid &= 0x7ff; 6414 6415 sdata_info(sdata, 6416 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", 6417 reassoc ? "Rea" : "A", assoc_data->ap_addr, 6418 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); 6419 6420 ifmgd->broken_ap = false; 6421 6422 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && 6423 elems->timeout_int && 6424 elems->timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { 6425 u32 tu, ms; 6426 6427 cfg80211_assoc_comeback(sdata->dev, assoc_data->ap_addr, 6428 le32_to_cpu(elems->timeout_int->value)); 6429 6430 tu = le32_to_cpu(elems->timeout_int->value); 6431 ms = tu * 1024 / 1000; 6432 sdata_info(sdata, 6433 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", 6434 assoc_data->ap_addr, tu, ms); 6435 assoc_data->timeout = jiffies + msecs_to_jiffies(ms); 6436 assoc_data->timeout_started = true; 6437 assoc_data->comeback = true; 6438 if (ms > IEEE80211_ASSOC_TIMEOUT) 6439 run_again(sdata, assoc_data->timeout); 6440 goto notify_driver; 6441 } 6442 6443 if (status_code != WLAN_STATUS_SUCCESS) { 6444 sdata_info(sdata, "%pM denied association (code=%d)\n", 6445 assoc_data->ap_addr, status_code); 6446 event.u.mlme.status = MLME_DENIED; 6447 event.u.mlme.reason = status_code; 6448 drv_event_callback(sdata->local, sdata, &event); 6449 } else { 6450 if (aid == 0 || aid > IEEE80211_MAX_AID) { 6451 sdata_info(sdata, 6452 "invalid AID value %d (out of range), turn off PS\n", 6453 aid); 6454 aid = 0; 6455 ifmgd->broken_ap = true; 6456 } 6457 6458 if (ieee80211_vif_is_mld(&sdata->vif)) { 6459 struct ieee80211_mle_basic_common_info *common; 6460 6461 if (!elems->ml_basic) { 6462 sdata_info(sdata, 6463 "MLO association with %pM but no (basic) multi-link element in response!\n", 6464 assoc_data->ap_addr); 6465 goto abandon_assoc; 6466 } 6467 6468 common = (void *)elems->ml_basic->variable; 6469 6470 if (memcmp(assoc_data->ap_addr, 6471 common->mld_mac_addr, ETH_ALEN)) { 6472 sdata_info(sdata, 6473 "AP MLD MAC address mismatch: got %pM expected %pM\n", 6474 common->mld_mac_addr, 6475 assoc_data->ap_addr); 6476 goto abandon_assoc; 6477 } 6478 6479 sdata->vif.cfg.eml_cap = 6480 ieee80211_mle_get_eml_cap((const void *)elems->ml_basic); 6481 sdata->vif.cfg.eml_med_sync_delay = 6482 ieee80211_mle_get_eml_med_sync_delay((const void *)elems->ml_basic); 6483 sdata->vif.cfg.mld_capa_op = 6484 ieee80211_mle_get_mld_capa_op((const void *)elems->ml_basic); 6485 } 6486 6487 sdata->vif.cfg.aid = aid; 6488 6489 if (!ieee80211_assoc_success(sdata, mgmt, elems, 6490 elem_start, elem_len)) { 6491 /* oops -- internal error -- send timeout for now */ 6492 ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT); 6493 goto notify_driver; 6494 } 6495 event.u.mlme.status = MLME_SUCCESS; 6496 drv_event_callback(sdata->local, sdata, &event); 6497 sdata_info(sdata, "associated\n"); 6498 6499 info.success = 1; 6500 } 6501 6502 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 6503 struct ieee80211_link_data *link; 6504 6505 if (!assoc_data->link[link_id].bss) 6506 continue; 6507 6508 resp.links[link_id].bss = assoc_data->link[link_id].bss; 6509 ether_addr_copy(resp.links[link_id].addr, 6510 assoc_data->link[link_id].addr); 6511 resp.links[link_id].status = assoc_data->link[link_id].status; 6512 6513 link = sdata_dereference(sdata->link[link_id], sdata); 6514 if (!link) 6515 continue; 6516 6517 /* get uapsd queues configuration - same for all links */ 6518 resp.uapsd_queues = 0; 6519 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 6520 if (link->tx_conf[ac].uapsd) 6521 resp.uapsd_queues |= ieee80211_ac_to_qos_mask[ac]; 6522 } 6523 6524 if (ieee80211_vif_is_mld(&sdata->vif)) { 6525 ether_addr_copy(ap_mld_addr, sdata->vif.cfg.ap_addr); 6526 resp.ap_mld_addr = ap_mld_addr; 6527 } 6528 6529 ieee80211_destroy_assoc_data(sdata, 6530 status_code == WLAN_STATUS_SUCCESS ? 6531 ASSOC_SUCCESS : 6532 ASSOC_REJECTED); 6533 6534 resp.buf = (u8 *)mgmt; 6535 resp.len = len; 6536 resp.req_ies = ifmgd->assoc_req_ies; 6537 resp.req_ies_len = ifmgd->assoc_req_ies_len; 6538 cfg80211_rx_assoc_resp(sdata->dev, &resp); 6539 notify_driver: 6540 drv_mgd_complete_tx(sdata->local, sdata, &info); 6541 kfree(elems); 6542 return; 6543 abandon_assoc: 6544 ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON); 6545 goto notify_driver; 6546 } 6547 6548 static void ieee80211_rx_bss_info(struct ieee80211_link_data *link, 6549 struct ieee80211_mgmt *mgmt, size_t len, 6550 struct ieee80211_rx_status *rx_status) 6551 { 6552 struct ieee80211_sub_if_data *sdata = link->sdata; 6553 struct ieee80211_local *local = sdata->local; 6554 struct ieee80211_bss *bss; 6555 struct ieee80211_channel *channel; 6556 6557 lockdep_assert_wiphy(sdata->local->hw.wiphy); 6558 6559 channel = ieee80211_get_channel_khz(local->hw.wiphy, 6560 ieee80211_rx_status_to_khz(rx_status)); 6561 if (!channel) 6562 return; 6563 6564 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel); 6565 if (bss) { 6566 link->conf->beacon_rate = bss->beacon_rate; 6567 ieee80211_rx_bss_put(local, bss); 6568 } 6569 } 6570 6571 6572 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_link_data *link, 6573 struct sk_buff *skb) 6574 { 6575 struct ieee80211_sub_if_data *sdata = link->sdata; 6576 struct ieee80211_mgmt *mgmt = (void *)skb->data; 6577 struct ieee80211_if_managed *ifmgd; 6578 struct ieee80211_rx_status *rx_status = (void *) skb->cb; 6579 struct ieee80211_channel *channel; 6580 size_t baselen, len = skb->len; 6581 6582 ifmgd = &sdata->u.mgd; 6583 6584 lockdep_assert_wiphy(sdata->local->hw.wiphy); 6585 6586 /* 6587 * According to Draft P802.11ax D6.0 clause 26.17.2.3.2: 6588 * "If a 6 GHz AP receives a Probe Request frame and responds with 6589 * a Probe Response frame [..], the Address 1 field of the Probe 6590 * Response frame shall be set to the broadcast address [..]" 6591 * So, on 6GHz band we should also accept broadcast responses. 6592 */ 6593 channel = ieee80211_get_channel(sdata->local->hw.wiphy, 6594 rx_status->freq); 6595 if (!channel) 6596 return; 6597 6598 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) && 6599 (channel->band != NL80211_BAND_6GHZ || 6600 !is_broadcast_ether_addr(mgmt->da))) 6601 return; /* ignore ProbeResp to foreign address */ 6602 6603 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 6604 if (baselen > len) 6605 return; 6606 6607 ieee80211_rx_bss_info(link, mgmt, len, rx_status); 6608 6609 if (ifmgd->associated && 6610 ether_addr_equal(mgmt->bssid, link->u.mgd.bssid)) 6611 ieee80211_reset_ap_probe(sdata); 6612 } 6613 6614 /* 6615 * This is the canonical list of information elements we care about, 6616 * the filter code also gives us all changes to the Microsoft OUI 6617 * (00:50:F2) vendor IE which is used for WMM which we need to track, 6618 * as well as the DTPC IE (part of the Cisco OUI) used for signaling 6619 * changes to requested client power. 6620 * 6621 * We implement beacon filtering in software since that means we can 6622 * avoid processing the frame here and in cfg80211, and userspace 6623 * will not be able to tell whether the hardware supports it or not. 6624 * 6625 * XXX: This list needs to be dynamic -- userspace needs to be able to 6626 * add items it requires. It also needs to be able to tell us to 6627 * look out for other vendor IEs. 6628 */ 6629 static const u64 care_about_ies = 6630 (1ULL << WLAN_EID_COUNTRY) | 6631 (1ULL << WLAN_EID_ERP_INFO) | 6632 (1ULL << WLAN_EID_CHANNEL_SWITCH) | 6633 (1ULL << WLAN_EID_PWR_CONSTRAINT) | 6634 (1ULL << WLAN_EID_HT_CAPABILITY) | 6635 (1ULL << WLAN_EID_HT_OPERATION) | 6636 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN); 6637 6638 static void ieee80211_handle_beacon_sig(struct ieee80211_link_data *link, 6639 struct ieee80211_if_managed *ifmgd, 6640 struct ieee80211_bss_conf *bss_conf, 6641 struct ieee80211_local *local, 6642 struct ieee80211_rx_status *rx_status) 6643 { 6644 struct ieee80211_sub_if_data *sdata = link->sdata; 6645 6646 /* Track average RSSI from the Beacon frames of the current AP */ 6647 6648 if (!link->u.mgd.tracking_signal_avg) { 6649 link->u.mgd.tracking_signal_avg = true; 6650 ewma_beacon_signal_init(&link->u.mgd.ave_beacon_signal); 6651 link->u.mgd.last_cqm_event_signal = 0; 6652 link->u.mgd.count_beacon_signal = 1; 6653 link->u.mgd.last_ave_beacon_signal = 0; 6654 } else { 6655 link->u.mgd.count_beacon_signal++; 6656 } 6657 6658 ewma_beacon_signal_add(&link->u.mgd.ave_beacon_signal, 6659 -rx_status->signal); 6660 6661 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && 6662 link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { 6663 int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal); 6664 int last_sig = link->u.mgd.last_ave_beacon_signal; 6665 struct ieee80211_event event = { 6666 .type = RSSI_EVENT, 6667 }; 6668 6669 /* 6670 * if signal crosses either of the boundaries, invoke callback 6671 * with appropriate parameters 6672 */ 6673 if (sig > ifmgd->rssi_max_thold && 6674 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { 6675 link->u.mgd.last_ave_beacon_signal = sig; 6676 event.u.rssi.data = RSSI_EVENT_HIGH; 6677 drv_event_callback(local, sdata, &event); 6678 } else if (sig < ifmgd->rssi_min_thold && 6679 (last_sig >= ifmgd->rssi_max_thold || 6680 last_sig == 0)) { 6681 link->u.mgd.last_ave_beacon_signal = sig; 6682 event.u.rssi.data = RSSI_EVENT_LOW; 6683 drv_event_callback(local, sdata, &event); 6684 } 6685 } 6686 6687 if (bss_conf->cqm_rssi_thold && 6688 link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && 6689 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { 6690 int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal); 6691 int last_event = link->u.mgd.last_cqm_event_signal; 6692 int thold = bss_conf->cqm_rssi_thold; 6693 int hyst = bss_conf->cqm_rssi_hyst; 6694 6695 if (sig < thold && 6696 (last_event == 0 || sig < last_event - hyst)) { 6697 link->u.mgd.last_cqm_event_signal = sig; 6698 ieee80211_cqm_rssi_notify( 6699 &sdata->vif, 6700 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 6701 sig, GFP_KERNEL); 6702 } else if (sig > thold && 6703 (last_event == 0 || sig > last_event + hyst)) { 6704 link->u.mgd.last_cqm_event_signal = sig; 6705 ieee80211_cqm_rssi_notify( 6706 &sdata->vif, 6707 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 6708 sig, GFP_KERNEL); 6709 } 6710 } 6711 6712 if (bss_conf->cqm_rssi_low && 6713 link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { 6714 int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal); 6715 int last_event = link->u.mgd.last_cqm_event_signal; 6716 int low = bss_conf->cqm_rssi_low; 6717 int high = bss_conf->cqm_rssi_high; 6718 6719 if (sig < low && 6720 (last_event == 0 || last_event >= low)) { 6721 link->u.mgd.last_cqm_event_signal = sig; 6722 ieee80211_cqm_rssi_notify( 6723 &sdata->vif, 6724 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 6725 sig, GFP_KERNEL); 6726 } else if (sig > high && 6727 (last_event == 0 || last_event <= high)) { 6728 link->u.mgd.last_cqm_event_signal = sig; 6729 ieee80211_cqm_rssi_notify( 6730 &sdata->vif, 6731 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 6732 sig, GFP_KERNEL); 6733 } 6734 } 6735 } 6736 6737 static bool ieee80211_rx_our_beacon(const u8 *tx_bssid, 6738 struct cfg80211_bss *bss) 6739 { 6740 if (ether_addr_equal(tx_bssid, bss->bssid)) 6741 return true; 6742 if (!bss->transmitted_bss) 6743 return false; 6744 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid); 6745 } 6746 6747 static void ieee80211_ml_reconf_work(struct wiphy *wiphy, 6748 struct wiphy_work *work) 6749 { 6750 struct ieee80211_sub_if_data *sdata = 6751 container_of(work, struct ieee80211_sub_if_data, 6752 u.mgd.ml_reconf_work.work); 6753 u16 new_valid_links, new_active_links, new_dormant_links; 6754 int ret; 6755 6756 if (!sdata->u.mgd.removed_links) 6757 return; 6758 6759 sdata_info(sdata, 6760 "MLO Reconfiguration: work: valid=0x%x, removed=0x%x\n", 6761 sdata->vif.valid_links, sdata->u.mgd.removed_links); 6762 6763 new_valid_links = sdata->vif.valid_links & ~sdata->u.mgd.removed_links; 6764 if (new_valid_links == sdata->vif.valid_links) 6765 return; 6766 6767 if (!new_valid_links || 6768 !(new_valid_links & ~sdata->vif.dormant_links)) { 6769 sdata_info(sdata, "No valid links after reconfiguration\n"); 6770 ret = -EINVAL; 6771 goto out; 6772 } 6773 6774 new_active_links = sdata->vif.active_links & ~sdata->u.mgd.removed_links; 6775 if (new_active_links != sdata->vif.active_links) { 6776 if (!new_active_links) 6777 new_active_links = 6778 BIT(ffs(new_valid_links & 6779 ~sdata->vif.dormant_links) - 1); 6780 6781 ret = ieee80211_set_active_links(&sdata->vif, new_active_links); 6782 if (ret) { 6783 sdata_info(sdata, 6784 "Failed setting active links\n"); 6785 goto out; 6786 } 6787 } 6788 6789 new_dormant_links = sdata->vif.dormant_links & ~sdata->u.mgd.removed_links; 6790 6791 ret = ieee80211_vif_set_links(sdata, new_valid_links, 6792 new_dormant_links); 6793 if (ret) 6794 sdata_info(sdata, "Failed setting valid links\n"); 6795 6796 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_VALID_LINKS); 6797 6798 out: 6799 if (!ret) 6800 cfg80211_links_removed(sdata->dev, sdata->u.mgd.removed_links); 6801 else 6802 __ieee80211_disconnect(sdata); 6803 6804 sdata->u.mgd.removed_links = 0; 6805 } 6806 6807 static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, 6808 struct ieee802_11_elems *elems) 6809 { 6810 const struct element *sub; 6811 unsigned long removed_links = 0; 6812 u16 link_removal_timeout[IEEE80211_MLD_MAX_NUM_LINKS] = {}; 6813 u8 link_id; 6814 u32 delay; 6815 6816 if (!ieee80211_vif_is_mld(&sdata->vif) || !elems->ml_reconf) 6817 return; 6818 6819 /* Directly parse the sub elements as the common information doesn't 6820 * hold any useful information. 6821 */ 6822 for_each_mle_subelement(sub, (const u8 *)elems->ml_reconf, 6823 elems->ml_reconf_len) { 6824 struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data; 6825 u8 *pos = prof->variable; 6826 u16 control; 6827 6828 if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE) 6829 continue; 6830 6831 if (!ieee80211_mle_reconf_sta_prof_size_ok(sub->data, 6832 sub->datalen)) 6833 return; 6834 6835 control = le16_to_cpu(prof->control); 6836 link_id = control & IEEE80211_MLE_STA_RECONF_CONTROL_LINK_ID; 6837 6838 removed_links |= BIT(link_id); 6839 6840 /* the MAC address should not be included, but handle it */ 6841 if (control & 6842 IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT) 6843 pos += 6; 6844 6845 /* According to Draft P802.11be_D3.0, the control should 6846 * include the AP Removal Timer present. If the AP Removal Timer 6847 * is not present assume immediate removal. 6848 */ 6849 if (control & 6850 IEEE80211_MLE_STA_RECONF_CONTROL_AP_REM_TIMER_PRESENT) 6851 link_removal_timeout[link_id] = get_unaligned_le16(pos); 6852 } 6853 6854 removed_links &= sdata->vif.valid_links; 6855 if (!removed_links) { 6856 /* In case the removal was cancelled, abort it */ 6857 if (sdata->u.mgd.removed_links) { 6858 sdata->u.mgd.removed_links = 0; 6859 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 6860 &sdata->u.mgd.ml_reconf_work); 6861 } 6862 return; 6863 } 6864 6865 delay = 0; 6866 for_each_set_bit(link_id, &removed_links, IEEE80211_MLD_MAX_NUM_LINKS) { 6867 struct ieee80211_bss_conf *link_conf = 6868 sdata_dereference(sdata->vif.link_conf[link_id], sdata); 6869 u32 link_delay; 6870 6871 if (!link_conf) { 6872 removed_links &= ~BIT(link_id); 6873 continue; 6874 } 6875 6876 if (link_removal_timeout[link_id] < 1) 6877 link_delay = 0; 6878 else 6879 link_delay = link_conf->beacon_int * 6880 (link_removal_timeout[link_id] - 1); 6881 6882 if (!delay) 6883 delay = link_delay; 6884 else 6885 delay = min(delay, link_delay); 6886 } 6887 6888 sdata->u.mgd.removed_links = removed_links; 6889 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 6890 &sdata->u.mgd.ml_reconf_work, 6891 TU_TO_JIFFIES(delay)); 6892 } 6893 6894 static int ieee80211_ttlm_set_links(struct ieee80211_sub_if_data *sdata, 6895 u16 active_links, u16 dormant_links, 6896 u16 suspended_links) 6897 { 6898 u64 changed = 0; 6899 int ret; 6900 6901 if (!active_links) { 6902 ret = -EINVAL; 6903 goto out; 6904 } 6905 6906 /* If there is an active negotiated TTLM, it should be discarded by 6907 * the new negotiated/advertised TTLM. 6908 */ 6909 if (sdata->vif.neg_ttlm.valid) { 6910 memset(&sdata->vif.neg_ttlm, 0, sizeof(sdata->vif.neg_ttlm)); 6911 sdata->vif.suspended_links = 0; 6912 changed = BSS_CHANGED_MLD_TTLM; 6913 } 6914 6915 if (sdata->vif.active_links != active_links) { 6916 /* usable links are affected when active_links are changed, 6917 * so notify the driver about the status change 6918 */ 6919 changed |= BSS_CHANGED_MLD_VALID_LINKS; 6920 active_links &= sdata->vif.active_links; 6921 if (!active_links) 6922 active_links = 6923 BIT(__ffs(sdata->vif.valid_links & 6924 ~dormant_links)); 6925 ret = ieee80211_set_active_links(&sdata->vif, active_links); 6926 if (ret) { 6927 sdata_info(sdata, "Failed to set TTLM active links\n"); 6928 goto out; 6929 } 6930 } 6931 6932 ret = ieee80211_vif_set_links(sdata, sdata->vif.valid_links, 6933 dormant_links); 6934 if (ret) { 6935 sdata_info(sdata, "Failed to set TTLM dormant links\n"); 6936 goto out; 6937 } 6938 6939 sdata->vif.suspended_links = suspended_links; 6940 if (sdata->vif.suspended_links) 6941 changed |= BSS_CHANGED_MLD_TTLM; 6942 6943 ieee80211_vif_cfg_change_notify(sdata, changed); 6944 6945 out: 6946 if (ret) 6947 ieee80211_disconnect(&sdata->vif, false); 6948 6949 return ret; 6950 } 6951 6952 static void ieee80211_tid_to_link_map_work(struct wiphy *wiphy, 6953 struct wiphy_work *work) 6954 { 6955 u16 new_active_links, new_dormant_links; 6956 struct ieee80211_sub_if_data *sdata = 6957 container_of(work, struct ieee80211_sub_if_data, 6958 u.mgd.ttlm_work.work); 6959 6960 new_active_links = sdata->u.mgd.ttlm_info.map & 6961 sdata->vif.valid_links; 6962 new_dormant_links = ~sdata->u.mgd.ttlm_info.map & 6963 sdata->vif.valid_links; 6964 6965 ieee80211_vif_set_links(sdata, sdata->vif.valid_links, 0); 6966 if (ieee80211_ttlm_set_links(sdata, new_active_links, new_dormant_links, 6967 0)) 6968 return; 6969 6970 sdata->u.mgd.ttlm_info.active = true; 6971 sdata->u.mgd.ttlm_info.switch_time = 0; 6972 } 6973 6974 static u16 ieee80211_get_ttlm(u8 bm_size, u8 *data) 6975 { 6976 if (bm_size == 1) 6977 return *data; 6978 else 6979 return get_unaligned_le16(data); 6980 } 6981 6982 static int 6983 ieee80211_parse_adv_t2l(struct ieee80211_sub_if_data *sdata, 6984 const struct ieee80211_ttlm_elem *ttlm, 6985 struct ieee80211_adv_ttlm_info *ttlm_info) 6986 { 6987 /* The element size was already validated in 6988 * ieee80211_tid_to_link_map_size_ok() 6989 */ 6990 u8 control, link_map_presence, map_size, tid; 6991 u8 *pos; 6992 6993 memset(ttlm_info, 0, sizeof(*ttlm_info)); 6994 pos = (void *)ttlm->optional; 6995 control = ttlm->control; 6996 6997 if ((control & IEEE80211_TTLM_CONTROL_DEF_LINK_MAP) || 6998 !(control & IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT)) 6999 return 0; 7000 7001 if ((control & IEEE80211_TTLM_CONTROL_DIRECTION) != 7002 IEEE80211_TTLM_DIRECTION_BOTH) { 7003 sdata_info(sdata, "Invalid advertised T2L map direction\n"); 7004 return -EINVAL; 7005 } 7006 7007 link_map_presence = *pos; 7008 pos++; 7009 7010 ttlm_info->switch_time = get_unaligned_le16(pos); 7011 7012 /* Since ttlm_info->switch_time == 0 means no switch time, bump it 7013 * by 1. 7014 */ 7015 if (!ttlm_info->switch_time) 7016 ttlm_info->switch_time = 1; 7017 7018 pos += 2; 7019 7020 if (control & IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT) { 7021 ttlm_info->duration = pos[0] | pos[1] << 8 | pos[2] << 16; 7022 pos += 3; 7023 } 7024 7025 if (control & IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE) 7026 map_size = 1; 7027 else 7028 map_size = 2; 7029 7030 /* According to Draft P802.11be_D3.0 clause 35.3.7.1.7, an AP MLD shall 7031 * not advertise a TID-to-link mapping that does not map all TIDs to the 7032 * same link set, reject frame if not all links have mapping 7033 */ 7034 if (link_map_presence != 0xff) { 7035 sdata_info(sdata, 7036 "Invalid advertised T2L mapping presence indicator\n"); 7037 return -EINVAL; 7038 } 7039 7040 ttlm_info->map = ieee80211_get_ttlm(map_size, pos); 7041 if (!ttlm_info->map) { 7042 sdata_info(sdata, 7043 "Invalid advertised T2L map for TID 0\n"); 7044 return -EINVAL; 7045 } 7046 7047 pos += map_size; 7048 7049 for (tid = 1; tid < 8; tid++) { 7050 u16 map = ieee80211_get_ttlm(map_size, pos); 7051 7052 if (map != ttlm_info->map) { 7053 sdata_info(sdata, "Invalid advertised T2L map for tid %d\n", 7054 tid); 7055 return -EINVAL; 7056 } 7057 7058 pos += map_size; 7059 } 7060 return 0; 7061 } 7062 7063 static void ieee80211_process_adv_ttlm(struct ieee80211_sub_if_data *sdata, 7064 struct ieee802_11_elems *elems, 7065 u64 beacon_ts) 7066 { 7067 u8 i; 7068 int ret; 7069 7070 if (!ieee80211_vif_is_mld(&sdata->vif)) 7071 return; 7072 7073 if (!elems->ttlm_num) { 7074 if (sdata->u.mgd.ttlm_info.switch_time) { 7075 /* if a planned TID-to-link mapping was cancelled - 7076 * abort it 7077 */ 7078 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 7079 &sdata->u.mgd.ttlm_work); 7080 } else if (sdata->u.mgd.ttlm_info.active) { 7081 /* if no TID-to-link element, set to default mapping in 7082 * which all TIDs are mapped to all setup links 7083 */ 7084 ret = ieee80211_vif_set_links(sdata, 7085 sdata->vif.valid_links, 7086 0); 7087 if (ret) { 7088 sdata_info(sdata, "Failed setting valid/dormant links\n"); 7089 return; 7090 } 7091 ieee80211_vif_cfg_change_notify(sdata, 7092 BSS_CHANGED_MLD_VALID_LINKS); 7093 } 7094 memset(&sdata->u.mgd.ttlm_info, 0, 7095 sizeof(sdata->u.mgd.ttlm_info)); 7096 return; 7097 } 7098 7099 for (i = 0; i < elems->ttlm_num; i++) { 7100 struct ieee80211_adv_ttlm_info ttlm_info; 7101 u32 res; 7102 7103 res = ieee80211_parse_adv_t2l(sdata, elems->ttlm[i], 7104 &ttlm_info); 7105 7106 if (res) { 7107 __ieee80211_disconnect(sdata); 7108 return; 7109 } 7110 7111 if (ttlm_info.switch_time) { 7112 u16 beacon_ts_tu, st_tu, delay; 7113 u32 delay_jiffies; 7114 u64 mask; 7115 7116 /* The t2l map switch time is indicated with a partial 7117 * TSF value (bits 10 to 25), get the partial beacon TS 7118 * as well, and calc the delay to the start time. 7119 */ 7120 mask = GENMASK_ULL(25, 10); 7121 beacon_ts_tu = (beacon_ts & mask) >> 10; 7122 st_tu = ttlm_info.switch_time; 7123 delay = st_tu - beacon_ts_tu; 7124 7125 /* 7126 * If the switch time is far in the future, then it 7127 * could also be the previous switch still being 7128 * announced. 7129 * We can simply ignore it for now, if it is a future 7130 * switch the AP will continue to announce it anyway. 7131 */ 7132 if (delay > IEEE80211_ADV_TTLM_ST_UNDERFLOW) 7133 return; 7134 7135 delay_jiffies = TU_TO_JIFFIES(delay); 7136 7137 /* Link switching can take time, so schedule it 7138 * 100ms before to be ready on time 7139 */ 7140 if (delay_jiffies > IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS) 7141 delay_jiffies -= 7142 IEEE80211_ADV_TTLM_SAFETY_BUFFER_MS; 7143 else 7144 delay_jiffies = 0; 7145 7146 sdata->u.mgd.ttlm_info = ttlm_info; 7147 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 7148 &sdata->u.mgd.ttlm_work); 7149 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 7150 &sdata->u.mgd.ttlm_work, 7151 delay_jiffies); 7152 return; 7153 } 7154 } 7155 } 7156 7157 static void 7158 ieee80211_mgd_check_cross_link_csa(struct ieee80211_sub_if_data *sdata, 7159 int reporting_link_id, 7160 struct ieee802_11_elems *elems) 7161 { 7162 const struct element *sta_profiles[IEEE80211_MLD_MAX_NUM_LINKS] = {}; 7163 ssize_t sta_profiles_len[IEEE80211_MLD_MAX_NUM_LINKS] = {}; 7164 const struct element *sub; 7165 const u8 *subelems; 7166 size_t subelems_len; 7167 u8 common_size; 7168 int link_id; 7169 7170 if (!ieee80211_mle_size_ok((u8 *)elems->ml_basic, elems->ml_basic_len)) 7171 return; 7172 7173 common_size = ieee80211_mle_common_size((u8 *)elems->ml_basic); 7174 subelems = (u8 *)elems->ml_basic + common_size; 7175 subelems_len = elems->ml_basic_len - common_size; 7176 7177 for_each_element_id(sub, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE, 7178 subelems, subelems_len) { 7179 struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data; 7180 struct ieee80211_link_data *link; 7181 ssize_t len; 7182 7183 if (!ieee80211_mle_basic_sta_prof_size_ok(sub->data, 7184 sub->datalen)) 7185 continue; 7186 7187 link_id = le16_get_bits(prof->control, 7188 IEEE80211_MLE_STA_CONTROL_LINK_ID); 7189 /* need a valid link ID, but also not our own, both AP bugs */ 7190 if (link_id == reporting_link_id || 7191 link_id >= IEEE80211_MLD_MAX_NUM_LINKS) 7192 continue; 7193 7194 link = sdata_dereference(sdata->link[link_id], sdata); 7195 if (!link) 7196 continue; 7197 7198 len = cfg80211_defragment_element(sub, subelems, subelems_len, 7199 NULL, 0, 7200 IEEE80211_MLE_SUBELEM_FRAGMENT); 7201 if (WARN_ON(len < 0)) 7202 continue; 7203 7204 sta_profiles[link_id] = sub; 7205 sta_profiles_len[link_id] = len; 7206 } 7207 7208 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 7209 struct ieee80211_mle_per_sta_profile *prof; 7210 struct ieee802_11_elems *prof_elems; 7211 struct ieee80211_link_data *link; 7212 ssize_t len; 7213 7214 if (link_id == reporting_link_id) 7215 continue; 7216 7217 link = sdata_dereference(sdata->link[link_id], sdata); 7218 if (!link) 7219 continue; 7220 7221 if (!sta_profiles[link_id]) { 7222 prof_elems = NULL; 7223 goto handle; 7224 } 7225 7226 /* we can defragment in-place, won't use the buffer again */ 7227 len = cfg80211_defragment_element(sta_profiles[link_id], 7228 subelems, subelems_len, 7229 (void *)sta_profiles[link_id], 7230 sta_profiles_len[link_id], 7231 IEEE80211_MLE_SUBELEM_FRAGMENT); 7232 if (WARN_ON(len != sta_profiles_len[link_id])) 7233 continue; 7234 7235 prof = (void *)sta_profiles[link_id]; 7236 prof_elems = ieee802_11_parse_elems(prof->variable + 7237 (prof->sta_info_len - 1), 7238 len - 7239 (prof->sta_info_len - 1), 7240 false, NULL); 7241 7242 /* memory allocation failed - let's hope that's transient */ 7243 if (!prof_elems) 7244 continue; 7245 7246 handle: 7247 /* 7248 * FIXME: the timings here are obviously incorrect, 7249 * but only older Intel drivers seem to care, and 7250 * those don't have MLO. If you really need this, 7251 * the problem is having to calculate it with the 7252 * TSF offset etc. The device_timestamp is still 7253 * correct, of course. 7254 */ 7255 ieee80211_sta_process_chanswitch(link, 0, 0, elems, prof_elems, 7256 IEEE80211_CSA_SOURCE_OTHER_LINK); 7257 kfree(prof_elems); 7258 } 7259 } 7260 7261 static bool ieee80211_mgd_ssid_mismatch(struct ieee80211_sub_if_data *sdata, 7262 const struct ieee802_11_elems *elems) 7263 { 7264 struct ieee80211_vif_cfg *cfg = &sdata->vif.cfg; 7265 static u8 zero_ssid[IEEE80211_MAX_SSID_LEN]; 7266 7267 if (!elems->ssid) 7268 return false; 7269 7270 /* hidden SSID: zero length */ 7271 if (elems->ssid_len == 0) 7272 return false; 7273 7274 if (elems->ssid_len != cfg->ssid_len) 7275 return true; 7276 7277 /* hidden SSID: zeroed out */ 7278 if (!memcmp(elems->ssid, zero_ssid, elems->ssid_len)) 7279 return false; 7280 7281 return memcmp(elems->ssid, cfg->ssid, cfg->ssid_len); 7282 } 7283 7284 static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link, 7285 struct ieee80211_hdr *hdr, size_t len, 7286 struct ieee80211_rx_status *rx_status) 7287 { 7288 struct ieee80211_sub_if_data *sdata = link->sdata; 7289 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 7290 struct ieee80211_bss_conf *bss_conf = link->conf; 7291 struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg; 7292 struct ieee80211_mgmt *mgmt = (void *) hdr; 7293 struct ieee80211_ext *ext = NULL; 7294 size_t baselen; 7295 struct ieee802_11_elems *elems; 7296 struct ieee80211_local *local = sdata->local; 7297 struct ieee80211_chanctx_conf *chanctx_conf; 7298 struct ieee80211_supported_band *sband; 7299 struct ieee80211_channel *chan; 7300 struct link_sta_info *link_sta; 7301 struct sta_info *sta; 7302 u64 changed = 0; 7303 bool erp_valid; 7304 u8 erp_value = 0; 7305 u32 ncrc = 0; 7306 u8 *bssid, *variable = mgmt->u.beacon.variable; 7307 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; 7308 struct ieee80211_elems_parse_params parse_params = { 7309 .mode = link->u.mgd.conn.mode, 7310 .link_id = -1, 7311 .from_ap = true, 7312 }; 7313 7314 lockdep_assert_wiphy(local->hw.wiphy); 7315 7316 /* Process beacon from the current BSS */ 7317 bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type); 7318 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) { 7319 ext = (void *)mgmt; 7320 variable = ext->u.s1g_beacon.variable + 7321 ieee80211_s1g_optional_len(ext->frame_control); 7322 } 7323 7324 baselen = (u8 *) variable - (u8 *) mgmt; 7325 if (baselen > len) 7326 return; 7327 7328 parse_params.start = variable; 7329 parse_params.len = len - baselen; 7330 7331 rcu_read_lock(); 7332 chanctx_conf = rcu_dereference(bss_conf->chanctx_conf); 7333 if (!chanctx_conf) { 7334 rcu_read_unlock(); 7335 return; 7336 } 7337 7338 if (ieee80211_rx_status_to_khz(rx_status) != 7339 ieee80211_channel_to_khz(chanctx_conf->def.chan)) { 7340 rcu_read_unlock(); 7341 return; 7342 } 7343 chan = chanctx_conf->def.chan; 7344 rcu_read_unlock(); 7345 7346 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && 7347 !WARN_ON(ieee80211_vif_is_mld(&sdata->vif)) && 7348 ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->link[0].bss)) { 7349 parse_params.bss = ifmgd->assoc_data->link[0].bss; 7350 elems = ieee802_11_parse_elems_full(&parse_params); 7351 if (!elems) 7352 return; 7353 7354 ieee80211_rx_bss_info(link, mgmt, len, rx_status); 7355 7356 if (elems->dtim_period) 7357 link->u.mgd.dtim_period = elems->dtim_period; 7358 link->u.mgd.have_beacon = true; 7359 ifmgd->assoc_data->need_beacon = false; 7360 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) && 7361 !ieee80211_is_s1g_beacon(hdr->frame_control)) { 7362 bss_conf->sync_tsf = 7363 le64_to_cpu(mgmt->u.beacon.timestamp); 7364 bss_conf->sync_device_ts = 7365 rx_status->device_timestamp; 7366 bss_conf->sync_dtim_count = elems->dtim_count; 7367 } 7368 7369 if (elems->mbssid_config_ie) 7370 bss_conf->profile_periodicity = 7371 elems->mbssid_config_ie->profile_periodicity; 7372 else 7373 bss_conf->profile_periodicity = 0; 7374 7375 if (elems->ext_capab_len >= 11 && 7376 (elems->ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT)) 7377 bss_conf->ema_ap = true; 7378 else 7379 bss_conf->ema_ap = false; 7380 7381 /* continue assoc process */ 7382 ifmgd->assoc_data->timeout = jiffies; 7383 ifmgd->assoc_data->timeout_started = true; 7384 run_again(sdata, ifmgd->assoc_data->timeout); 7385 kfree(elems); 7386 return; 7387 } 7388 7389 if (!ifmgd->associated || 7390 !ieee80211_rx_our_beacon(bssid, bss_conf->bss)) 7391 return; 7392 bssid = link->u.mgd.bssid; 7393 7394 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL)) 7395 ieee80211_handle_beacon_sig(link, ifmgd, bss_conf, 7396 local, rx_status); 7397 7398 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { 7399 mlme_dbg_ratelimited(sdata, 7400 "cancelling AP probe due to a received beacon\n"); 7401 ieee80211_reset_ap_probe(sdata); 7402 } 7403 7404 /* 7405 * Push the beacon loss detection into the future since 7406 * we are processing a beacon from the AP just now. 7407 */ 7408 ieee80211_sta_reset_beacon_monitor(sdata); 7409 7410 /* TODO: CRC urrently not calculated on S1G Beacon Compatibility 7411 * element (which carries the beacon interval). Don't forget to add a 7412 * bit to care_about_ies[] above if mac80211 is interested in a 7413 * changing S1G element. 7414 */ 7415 if (!ieee80211_is_s1g_beacon(hdr->frame_control)) 7416 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); 7417 parse_params.bss = bss_conf->bss; 7418 parse_params.filter = care_about_ies; 7419 parse_params.crc = ncrc; 7420 elems = ieee802_11_parse_elems_full(&parse_params); 7421 if (!elems) 7422 return; 7423 7424 if (rx_status->flag & RX_FLAG_DECRYPTED && 7425 ieee80211_mgd_ssid_mismatch(sdata, elems)) { 7426 sdata_info(sdata, "SSID mismatch for AP %pM, disconnect\n", 7427 sdata->vif.cfg.ap_addr); 7428 __ieee80211_disconnect(sdata); 7429 return; 7430 } 7431 7432 ncrc = elems->crc; 7433 7434 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && 7435 ieee80211_check_tim(elems->tim, elems->tim_len, vif_cfg->aid)) { 7436 if (local->hw.conf.dynamic_ps_timeout > 0) { 7437 if (local->hw.conf.flags & IEEE80211_CONF_PS) { 7438 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 7439 ieee80211_hw_config(local, -1, 7440 IEEE80211_CONF_CHANGE_PS); 7441 } 7442 ieee80211_send_nullfunc(local, sdata, false); 7443 } else if (!local->pspolling && sdata->u.mgd.powersave) { 7444 local->pspolling = true; 7445 7446 /* 7447 * Here is assumed that the driver will be 7448 * able to send ps-poll frame and receive a 7449 * response even though power save mode is 7450 * enabled, but some drivers might require 7451 * to disable power save here. This needs 7452 * to be investigated. 7453 */ 7454 ieee80211_send_pspoll(local, sdata); 7455 } 7456 } 7457 7458 if (sdata->vif.p2p || 7459 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { 7460 struct ieee80211_p2p_noa_attr noa = {}; 7461 int ret; 7462 7463 ret = cfg80211_get_p2p_attr(variable, 7464 len - baselen, 7465 IEEE80211_P2P_ATTR_ABSENCE_NOTICE, 7466 (u8 *) &noa, sizeof(noa)); 7467 if (ret >= 2) { 7468 if (link->u.mgd.p2p_noa_index != noa.index) { 7469 /* valid noa_attr and index changed */ 7470 link->u.mgd.p2p_noa_index = noa.index; 7471 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); 7472 changed |= BSS_CHANGED_P2P_PS; 7473 /* 7474 * make sure we update all information, the CRC 7475 * mechanism doesn't look at P2P attributes. 7476 */ 7477 link->u.mgd.beacon_crc_valid = false; 7478 } 7479 } else if (link->u.mgd.p2p_noa_index != -1) { 7480 /* noa_attr not found and we had valid noa_attr before */ 7481 link->u.mgd.p2p_noa_index = -1; 7482 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); 7483 changed |= BSS_CHANGED_P2P_PS; 7484 link->u.mgd.beacon_crc_valid = false; 7485 } 7486 } 7487 7488 /* 7489 * Update beacon timing and dtim count on every beacon appearance. This 7490 * will allow the driver to use the most updated values. Do it before 7491 * comparing this one with last received beacon. 7492 * IMPORTANT: These parameters would possibly be out of sync by the time 7493 * the driver will use them. The synchronized view is currently 7494 * guaranteed only in certain callbacks. 7495 */ 7496 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) && 7497 !ieee80211_is_s1g_beacon(hdr->frame_control)) { 7498 bss_conf->sync_tsf = 7499 le64_to_cpu(mgmt->u.beacon.timestamp); 7500 bss_conf->sync_device_ts = 7501 rx_status->device_timestamp; 7502 bss_conf->sync_dtim_count = elems->dtim_count; 7503 } 7504 7505 if ((ncrc == link->u.mgd.beacon_crc && link->u.mgd.beacon_crc_valid) || 7506 (ext && ieee80211_is_s1g_short_beacon(ext->frame_control, 7507 parse_params.start, 7508 parse_params.len))) 7509 goto free; 7510 link->u.mgd.beacon_crc = ncrc; 7511 link->u.mgd.beacon_crc_valid = true; 7512 7513 ieee80211_rx_bss_info(link, mgmt, len, rx_status); 7514 7515 ieee80211_sta_process_chanswitch(link, rx_status->mactime, 7516 rx_status->device_timestamp, 7517 elems, elems, 7518 IEEE80211_CSA_SOURCE_BEACON); 7519 7520 /* note that after this elems->ml_basic can no longer be used fully */ 7521 ieee80211_mgd_check_cross_link_csa(sdata, rx_status->link_id, elems); 7522 7523 ieee80211_mgd_update_bss_param_ch_cnt(sdata, bss_conf, elems); 7524 7525 if (!sdata->u.mgd.epcs.enabled && 7526 !link->u.mgd.disable_wmm_tracking && 7527 ieee80211_sta_wmm_params(local, link, elems->wmm_param, 7528 elems->wmm_param_len, 7529 elems->mu_edca_param_set)) 7530 changed |= BSS_CHANGED_QOS; 7531 7532 /* 7533 * If we haven't had a beacon before, tell the driver about the 7534 * DTIM period (and beacon timing if desired) now. 7535 */ 7536 if (!link->u.mgd.have_beacon) { 7537 /* a few bogus AP send dtim_period = 0 or no TIM IE */ 7538 bss_conf->dtim_period = elems->dtim_period ?: 1; 7539 7540 changed |= BSS_CHANGED_BEACON_INFO; 7541 link->u.mgd.have_beacon = true; 7542 7543 ieee80211_recalc_ps(local); 7544 7545 ieee80211_recalc_ps_vif(sdata); 7546 } 7547 7548 if (elems->erp_info) { 7549 erp_valid = true; 7550 erp_value = elems->erp_info[0]; 7551 } else { 7552 erp_valid = false; 7553 } 7554 7555 if (!ieee80211_is_s1g_beacon(hdr->frame_control)) 7556 changed |= ieee80211_handle_bss_capability(link, 7557 le16_to_cpu(mgmt->u.beacon.capab_info), 7558 erp_valid, erp_value); 7559 7560 sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 7561 if (WARN_ON(!sta)) { 7562 goto free; 7563 } 7564 link_sta = rcu_dereference_protected(sta->link[link->link_id], 7565 lockdep_is_held(&local->hw.wiphy->mtx)); 7566 if (WARN_ON(!link_sta)) { 7567 goto free; 7568 } 7569 7570 if (WARN_ON(!bss_conf->chanreq.oper.chan)) 7571 goto free; 7572 7573 sband = local->hw.wiphy->bands[bss_conf->chanreq.oper.chan->band]; 7574 7575 changed |= ieee80211_recalc_twt_req(sdata, sband, link, link_sta, elems); 7576 7577 if (ieee80211_config_bw(link, elems, true, &changed, 7578 IEEE80211_STYPE_BEACON)) { 7579 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, 7580 WLAN_REASON_DEAUTH_LEAVING, 7581 true, deauth_buf); 7582 ieee80211_report_disconnect(sdata, deauth_buf, 7583 sizeof(deauth_buf), true, 7584 WLAN_REASON_DEAUTH_LEAVING, 7585 false); 7586 goto free; 7587 } 7588 7589 if (elems->opmode_notif) 7590 ieee80211_vht_handle_opmode(sdata, link_sta, 7591 *elems->opmode_notif, 7592 rx_status->band); 7593 7594 changed |= ieee80211_handle_pwr_constr(link, chan, mgmt, 7595 elems->country_elem, 7596 elems->country_elem_len, 7597 elems->pwr_constr_elem, 7598 elems->cisco_dtpc_elem); 7599 7600 ieee80211_ml_reconfiguration(sdata, elems); 7601 ieee80211_process_adv_ttlm(sdata, elems, 7602 le64_to_cpu(mgmt->u.beacon.timestamp)); 7603 7604 ieee80211_link_info_change_notify(sdata, link, changed); 7605 free: 7606 kfree(elems); 7607 } 7608 7609 static void ieee80211_apply_neg_ttlm(struct ieee80211_sub_if_data *sdata, 7610 struct ieee80211_neg_ttlm neg_ttlm) 7611 { 7612 u16 new_active_links, new_dormant_links, new_suspended_links, map = 0; 7613 u8 i; 7614 7615 for (i = 0; i < IEEE80211_TTLM_NUM_TIDS; i++) 7616 map |= neg_ttlm.downlink[i] | neg_ttlm.uplink[i]; 7617 7618 /* If there is an active TTLM, unset previously suspended links */ 7619 if (sdata->vif.neg_ttlm.valid) 7620 sdata->vif.dormant_links &= ~sdata->vif.suspended_links; 7621 7622 /* exclude links that are already disabled by advertised TTLM */ 7623 new_active_links = 7624 map & sdata->vif.valid_links & ~sdata->vif.dormant_links; 7625 new_suspended_links = 7626 (~map & sdata->vif.valid_links) & ~sdata->vif.dormant_links; 7627 new_dormant_links = sdata->vif.dormant_links | new_suspended_links; 7628 if (ieee80211_ttlm_set_links(sdata, new_active_links, 7629 new_dormant_links, new_suspended_links)) 7630 return; 7631 7632 sdata->vif.neg_ttlm = neg_ttlm; 7633 sdata->vif.neg_ttlm.valid = true; 7634 } 7635 7636 static void ieee80211_neg_ttlm_timeout_work(struct wiphy *wiphy, 7637 struct wiphy_work *work) 7638 { 7639 struct ieee80211_sub_if_data *sdata = 7640 container_of(work, struct ieee80211_sub_if_data, 7641 u.mgd.neg_ttlm_timeout_work.work); 7642 7643 sdata_info(sdata, 7644 "No negotiated TTLM response from AP, disconnecting.\n"); 7645 7646 __ieee80211_disconnect(sdata); 7647 } 7648 7649 static void 7650 ieee80211_neg_ttlm_add_suggested_map(struct sk_buff *skb, 7651 struct ieee80211_neg_ttlm *neg_ttlm) 7652 { 7653 u8 i, direction[IEEE80211_TTLM_MAX_CNT]; 7654 7655 if (memcmp(neg_ttlm->downlink, neg_ttlm->uplink, 7656 sizeof(neg_ttlm->downlink))) { 7657 direction[0] = IEEE80211_TTLM_DIRECTION_DOWN; 7658 direction[1] = IEEE80211_TTLM_DIRECTION_UP; 7659 } else { 7660 direction[0] = IEEE80211_TTLM_DIRECTION_BOTH; 7661 } 7662 7663 for (i = 0; i < ARRAY_SIZE(direction); i++) { 7664 u8 tid, len, map_ind = 0, *len_pos, *map_ind_pos, *pos; 7665 __le16 map; 7666 7667 len = sizeof(struct ieee80211_ttlm_elem) + 1 + 1; 7668 7669 pos = skb_put(skb, len + 2); 7670 *pos++ = WLAN_EID_EXTENSION; 7671 len_pos = pos++; 7672 *pos++ = WLAN_EID_EXT_TID_TO_LINK_MAPPING; 7673 *pos++ = direction[i]; 7674 map_ind_pos = pos++; 7675 for (tid = 0; tid < IEEE80211_TTLM_NUM_TIDS; tid++) { 7676 map = direction[i] == IEEE80211_TTLM_DIRECTION_UP ? 7677 cpu_to_le16(neg_ttlm->uplink[tid]) : 7678 cpu_to_le16(neg_ttlm->downlink[tid]); 7679 if (!map) 7680 continue; 7681 7682 len += 2; 7683 map_ind |= BIT(tid); 7684 skb_put_data(skb, &map, sizeof(map)); 7685 } 7686 7687 *map_ind_pos = map_ind; 7688 *len_pos = len; 7689 7690 if (direction[i] == IEEE80211_TTLM_DIRECTION_BOTH) 7691 break; 7692 } 7693 } 7694 7695 static void 7696 ieee80211_send_neg_ttlm_req(struct ieee80211_sub_if_data *sdata, 7697 struct ieee80211_neg_ttlm *neg_ttlm, 7698 u8 dialog_token) 7699 { 7700 struct ieee80211_local *local = sdata->local; 7701 struct ieee80211_mgmt *mgmt; 7702 struct sk_buff *skb; 7703 int hdr_len = offsetofend(struct ieee80211_mgmt, u.action.u.ttlm_req); 7704 int ttlm_max_len = 2 + 1 + sizeof(struct ieee80211_ttlm_elem) + 1 + 7705 2 * 2 * IEEE80211_TTLM_NUM_TIDS; 7706 7707 skb = dev_alloc_skb(local->tx_headroom + hdr_len + ttlm_max_len); 7708 if (!skb) 7709 return; 7710 7711 skb_reserve(skb, local->tx_headroom); 7712 mgmt = skb_put_zero(skb, hdr_len); 7713 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 7714 IEEE80211_STYPE_ACTION); 7715 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 7716 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 7717 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 7718 7719 mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT; 7720 mgmt->u.action.u.ttlm_req.action_code = 7721 WLAN_PROTECTED_EHT_ACTION_TTLM_REQ; 7722 mgmt->u.action.u.ttlm_req.dialog_token = dialog_token; 7723 ieee80211_neg_ttlm_add_suggested_map(skb, neg_ttlm); 7724 ieee80211_tx_skb(sdata, skb); 7725 } 7726 7727 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata, 7728 struct cfg80211_ttlm_params *params) 7729 { 7730 struct ieee80211_neg_ttlm neg_ttlm = {}; 7731 u8 i; 7732 7733 if (!ieee80211_vif_is_mld(&sdata->vif) || 7734 !(sdata->vif.cfg.mld_capa_op & 7735 IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP)) 7736 return -EINVAL; 7737 7738 for (i = 0; i < IEEE80211_TTLM_NUM_TIDS; i++) { 7739 if ((params->dlink[i] & ~sdata->vif.valid_links) || 7740 (params->ulink[i] & ~sdata->vif.valid_links)) 7741 return -EINVAL; 7742 7743 neg_ttlm.downlink[i] = params->dlink[i]; 7744 neg_ttlm.uplink[i] = params->ulink[i]; 7745 } 7746 7747 if (drv_can_neg_ttlm(sdata->local, sdata, &neg_ttlm) != 7748 NEG_TTLM_RES_ACCEPT) 7749 return -EINVAL; 7750 7751 ieee80211_apply_neg_ttlm(sdata, neg_ttlm); 7752 sdata->u.mgd.dialog_token_alloc++; 7753 ieee80211_send_neg_ttlm_req(sdata, &sdata->vif.neg_ttlm, 7754 sdata->u.mgd.dialog_token_alloc); 7755 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 7756 &sdata->u.mgd.neg_ttlm_timeout_work); 7757 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 7758 &sdata->u.mgd.neg_ttlm_timeout_work, 7759 IEEE80211_NEG_TTLM_REQ_TIMEOUT); 7760 return 0; 7761 } 7762 7763 static void 7764 ieee80211_send_neg_ttlm_res(struct ieee80211_sub_if_data *sdata, 7765 enum ieee80211_neg_ttlm_res ttlm_res, 7766 u8 dialog_token, 7767 struct ieee80211_neg_ttlm *neg_ttlm) 7768 { 7769 struct ieee80211_local *local = sdata->local; 7770 struct ieee80211_mgmt *mgmt; 7771 struct sk_buff *skb; 7772 int hdr_len = offsetofend(struct ieee80211_mgmt, u.action.u.ttlm_res); 7773 int ttlm_max_len = 2 + 1 + sizeof(struct ieee80211_ttlm_elem) + 1 + 7774 2 * 2 * IEEE80211_TTLM_NUM_TIDS; 7775 u16 status_code; 7776 7777 skb = dev_alloc_skb(local->tx_headroom + hdr_len + ttlm_max_len); 7778 if (!skb) 7779 return; 7780 7781 skb_reserve(skb, local->tx_headroom); 7782 mgmt = skb_put_zero(skb, hdr_len); 7783 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 7784 IEEE80211_STYPE_ACTION); 7785 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 7786 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 7787 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 7788 7789 mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT; 7790 mgmt->u.action.u.ttlm_res.action_code = 7791 WLAN_PROTECTED_EHT_ACTION_TTLM_RES; 7792 mgmt->u.action.u.ttlm_res.dialog_token = dialog_token; 7793 switch (ttlm_res) { 7794 default: 7795 WARN_ON(1); 7796 fallthrough; 7797 case NEG_TTLM_RES_REJECT: 7798 status_code = WLAN_STATUS_DENIED_TID_TO_LINK_MAPPING; 7799 break; 7800 case NEG_TTLM_RES_ACCEPT: 7801 status_code = WLAN_STATUS_SUCCESS; 7802 break; 7803 case NEG_TTLM_RES_SUGGEST_PREFERRED: 7804 status_code = WLAN_STATUS_PREF_TID_TO_LINK_MAPPING_SUGGESTED; 7805 ieee80211_neg_ttlm_add_suggested_map(skb, neg_ttlm); 7806 break; 7807 } 7808 7809 mgmt->u.action.u.ttlm_res.status_code = cpu_to_le16(status_code); 7810 ieee80211_tx_skb(sdata, skb); 7811 } 7812 7813 static int 7814 ieee80211_parse_neg_ttlm(struct ieee80211_sub_if_data *sdata, 7815 const struct ieee80211_ttlm_elem *ttlm, 7816 struct ieee80211_neg_ttlm *neg_ttlm, 7817 u8 *direction) 7818 { 7819 u8 control, link_map_presence, map_size, tid; 7820 u8 *pos; 7821 7822 /* The element size was already validated in 7823 * ieee80211_tid_to_link_map_size_ok() 7824 */ 7825 pos = (void *)ttlm->optional; 7826 7827 control = ttlm->control; 7828 7829 /* mapping switch time and expected duration fields are not expected 7830 * in case of negotiated TTLM 7831 */ 7832 if (control & (IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT | 7833 IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT)) { 7834 mlme_dbg(sdata, 7835 "Invalid TTLM element in negotiated TTLM request\n"); 7836 return -EINVAL; 7837 } 7838 7839 if (control & IEEE80211_TTLM_CONTROL_DEF_LINK_MAP) { 7840 for (tid = 0; tid < IEEE80211_TTLM_NUM_TIDS; tid++) { 7841 neg_ttlm->downlink[tid] = sdata->vif.valid_links; 7842 neg_ttlm->uplink[tid] = sdata->vif.valid_links; 7843 } 7844 *direction = IEEE80211_TTLM_DIRECTION_BOTH; 7845 return 0; 7846 } 7847 7848 *direction = u8_get_bits(control, IEEE80211_TTLM_CONTROL_DIRECTION); 7849 if (*direction != IEEE80211_TTLM_DIRECTION_DOWN && 7850 *direction != IEEE80211_TTLM_DIRECTION_UP && 7851 *direction != IEEE80211_TTLM_DIRECTION_BOTH) 7852 return -EINVAL; 7853 7854 link_map_presence = *pos; 7855 pos++; 7856 7857 if (control & IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE) 7858 map_size = 1; 7859 else 7860 map_size = 2; 7861 7862 for (tid = 0; tid < IEEE80211_TTLM_NUM_TIDS; tid++) { 7863 u16 map; 7864 7865 if (link_map_presence & BIT(tid)) { 7866 map = ieee80211_get_ttlm(map_size, pos); 7867 if (!map) { 7868 mlme_dbg(sdata, 7869 "No active links for TID %d", tid); 7870 return -EINVAL; 7871 } 7872 } else { 7873 map = 0; 7874 } 7875 7876 switch (*direction) { 7877 case IEEE80211_TTLM_DIRECTION_BOTH: 7878 neg_ttlm->downlink[tid] = map; 7879 neg_ttlm->uplink[tid] = map; 7880 break; 7881 case IEEE80211_TTLM_DIRECTION_DOWN: 7882 neg_ttlm->downlink[tid] = map; 7883 break; 7884 case IEEE80211_TTLM_DIRECTION_UP: 7885 neg_ttlm->uplink[tid] = map; 7886 break; 7887 default: 7888 return -EINVAL; 7889 } 7890 pos += map_size; 7891 } 7892 return 0; 7893 } 7894 7895 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata, 7896 struct ieee80211_mgmt *mgmt, size_t len) 7897 { 7898 u8 dialog_token, direction[IEEE80211_TTLM_MAX_CNT] = {}, i; 7899 size_t ies_len; 7900 enum ieee80211_neg_ttlm_res ttlm_res = NEG_TTLM_RES_ACCEPT; 7901 struct ieee802_11_elems *elems = NULL; 7902 struct ieee80211_neg_ttlm neg_ttlm = {}; 7903 7904 BUILD_BUG_ON(ARRAY_SIZE(direction) != ARRAY_SIZE(elems->ttlm)); 7905 7906 if (!ieee80211_vif_is_mld(&sdata->vif)) 7907 return; 7908 7909 dialog_token = mgmt->u.action.u.ttlm_req.dialog_token; 7910 ies_len = len - offsetof(struct ieee80211_mgmt, 7911 u.action.u.ttlm_req.variable); 7912 elems = ieee802_11_parse_elems(mgmt->u.action.u.ttlm_req.variable, 7913 ies_len, true, NULL); 7914 if (!elems) { 7915 ttlm_res = NEG_TTLM_RES_REJECT; 7916 goto out; 7917 } 7918 7919 for (i = 0; i < elems->ttlm_num; i++) { 7920 if (ieee80211_parse_neg_ttlm(sdata, elems->ttlm[i], 7921 &neg_ttlm, &direction[i]) || 7922 (direction[i] == IEEE80211_TTLM_DIRECTION_BOTH && 7923 elems->ttlm_num != 1)) { 7924 ttlm_res = NEG_TTLM_RES_REJECT; 7925 goto out; 7926 } 7927 } 7928 7929 if (!elems->ttlm_num || 7930 (elems->ttlm_num == 2 && direction[0] == direction[1])) { 7931 ttlm_res = NEG_TTLM_RES_REJECT; 7932 goto out; 7933 } 7934 7935 for (i = 0; i < IEEE80211_TTLM_NUM_TIDS; i++) { 7936 if ((neg_ttlm.downlink[i] && 7937 (neg_ttlm.downlink[i] & ~sdata->vif.valid_links)) || 7938 (neg_ttlm.uplink[i] && 7939 (neg_ttlm.uplink[i] & ~sdata->vif.valid_links))) { 7940 ttlm_res = NEG_TTLM_RES_REJECT; 7941 goto out; 7942 } 7943 } 7944 7945 ttlm_res = drv_can_neg_ttlm(sdata->local, sdata, &neg_ttlm); 7946 7947 if (ttlm_res != NEG_TTLM_RES_ACCEPT) 7948 goto out; 7949 7950 ieee80211_apply_neg_ttlm(sdata, neg_ttlm); 7951 out: 7952 kfree(elems); 7953 ieee80211_send_neg_ttlm_res(sdata, ttlm_res, dialog_token, &neg_ttlm); 7954 } 7955 7956 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata, 7957 struct ieee80211_mgmt *mgmt, size_t len) 7958 { 7959 if (!ieee80211_vif_is_mld(&sdata->vif) || 7960 mgmt->u.action.u.ttlm_req.dialog_token != 7961 sdata->u.mgd.dialog_token_alloc) 7962 return; 7963 7964 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 7965 &sdata->u.mgd.neg_ttlm_timeout_work); 7966 7967 /* MLD station sends a TID to link mapping request, mainly to handle 7968 * BTM (BSS transition management) request, in which case it needs to 7969 * restrict the active links set. 7970 * In this case it's not expected that the MLD AP will reject the 7971 * negotiated TTLM request. 7972 * This can be better implemented in the future, to handle request 7973 * rejections. 7974 */ 7975 if (le16_to_cpu(mgmt->u.action.u.ttlm_res.status_code) != WLAN_STATUS_SUCCESS) 7976 __ieee80211_disconnect(sdata); 7977 } 7978 7979 void ieee80211_process_ttlm_teardown(struct ieee80211_sub_if_data *sdata) 7980 { 7981 u16 new_dormant_links; 7982 7983 if (!sdata->vif.neg_ttlm.valid) 7984 return; 7985 7986 memset(&sdata->vif.neg_ttlm, 0, sizeof(sdata->vif.neg_ttlm)); 7987 new_dormant_links = 7988 sdata->vif.dormant_links & ~sdata->vif.suspended_links; 7989 sdata->vif.suspended_links = 0; 7990 ieee80211_vif_set_links(sdata, sdata->vif.valid_links, 7991 new_dormant_links); 7992 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_TTLM | 7993 BSS_CHANGED_MLD_VALID_LINKS); 7994 } 7995 7996 static void ieee80211_teardown_ttlm_work(struct wiphy *wiphy, 7997 struct wiphy_work *work) 7998 { 7999 struct ieee80211_sub_if_data *sdata = 8000 container_of(work, struct ieee80211_sub_if_data, 8001 u.mgd.teardown_ttlm_work); 8002 8003 ieee80211_process_ttlm_teardown(sdata); 8004 } 8005 8006 void ieee80211_send_teardown_neg_ttlm(struct ieee80211_vif *vif) 8007 { 8008 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 8009 struct ieee80211_local *local = sdata->local; 8010 struct ieee80211_mgmt *mgmt; 8011 struct sk_buff *skb; 8012 int frame_len = offsetofend(struct ieee80211_mgmt, 8013 u.action.u.ttlm_tear_down); 8014 struct ieee80211_tx_info *info; 8015 8016 skb = dev_alloc_skb(local->hw.extra_tx_headroom + frame_len); 8017 if (!skb) 8018 return; 8019 8020 skb_reserve(skb, local->hw.extra_tx_headroom); 8021 mgmt = skb_put_zero(skb, frame_len); 8022 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 8023 IEEE80211_STYPE_ACTION); 8024 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 8025 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 8026 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 8027 8028 mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT; 8029 mgmt->u.action.u.ttlm_tear_down.action_code = 8030 WLAN_PROTECTED_EHT_ACTION_TTLM_TEARDOWN; 8031 8032 info = IEEE80211_SKB_CB(skb); 8033 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 8034 info->status_data = IEEE80211_STATUS_TYPE_NEG_TTLM; 8035 ieee80211_tx_skb(sdata, skb); 8036 } 8037 EXPORT_SYMBOL(ieee80211_send_teardown_neg_ttlm); 8038 8039 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 8040 struct sk_buff *skb) 8041 { 8042 struct ieee80211_link_data *link = &sdata->deflink; 8043 struct ieee80211_rx_status *rx_status; 8044 struct ieee80211_hdr *hdr; 8045 u16 fc; 8046 8047 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8048 8049 rx_status = (struct ieee80211_rx_status *) skb->cb; 8050 hdr = (struct ieee80211_hdr *) skb->data; 8051 fc = le16_to_cpu(hdr->frame_control); 8052 8053 switch (fc & IEEE80211_FCTL_STYPE) { 8054 case IEEE80211_STYPE_S1G_BEACON: 8055 ieee80211_rx_mgmt_beacon(link, hdr, skb->len, rx_status); 8056 break; 8057 } 8058 } 8059 8060 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 8061 struct sk_buff *skb) 8062 { 8063 struct ieee80211_link_data *link = &sdata->deflink; 8064 struct ieee80211_rx_status *rx_status; 8065 struct ieee802_11_elems *elems; 8066 struct ieee80211_mgmt *mgmt; 8067 u16 fc; 8068 int ies_len; 8069 8070 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8071 8072 rx_status = (struct ieee80211_rx_status *) skb->cb; 8073 mgmt = (struct ieee80211_mgmt *) skb->data; 8074 fc = le16_to_cpu(mgmt->frame_control); 8075 8076 if (rx_status->link_valid) { 8077 link = sdata_dereference(sdata->link[rx_status->link_id], 8078 sdata); 8079 if (!link) 8080 return; 8081 } 8082 8083 switch (fc & IEEE80211_FCTL_STYPE) { 8084 case IEEE80211_STYPE_BEACON: 8085 ieee80211_rx_mgmt_beacon(link, (void *)mgmt, 8086 skb->len, rx_status); 8087 break; 8088 case IEEE80211_STYPE_PROBE_RESP: 8089 ieee80211_rx_mgmt_probe_resp(link, skb); 8090 break; 8091 case IEEE80211_STYPE_AUTH: 8092 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); 8093 break; 8094 case IEEE80211_STYPE_DEAUTH: 8095 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); 8096 break; 8097 case IEEE80211_STYPE_DISASSOC: 8098 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); 8099 break; 8100 case IEEE80211_STYPE_ASSOC_RESP: 8101 case IEEE80211_STYPE_REASSOC_RESP: 8102 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); 8103 break; 8104 case IEEE80211_STYPE_ACTION: 8105 if (!sdata->u.mgd.associated || 8106 !ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr)) 8107 break; 8108 8109 switch (mgmt->u.action.category) { 8110 case WLAN_CATEGORY_SPECTRUM_MGMT: 8111 ies_len = skb->len - 8112 offsetof(struct ieee80211_mgmt, 8113 u.action.u.chan_switch.variable); 8114 8115 if (ies_len < 0) 8116 break; 8117 8118 /* CSA IE cannot be overridden, no need for BSSID */ 8119 elems = ieee802_11_parse_elems( 8120 mgmt->u.action.u.chan_switch.variable, 8121 ies_len, true, NULL); 8122 8123 if (elems && !elems->parse_error) { 8124 enum ieee80211_csa_source src = 8125 IEEE80211_CSA_SOURCE_PROT_ACTION; 8126 8127 ieee80211_sta_process_chanswitch(link, 8128 rx_status->mactime, 8129 rx_status->device_timestamp, 8130 elems, elems, 8131 src); 8132 } 8133 kfree(elems); 8134 break; 8135 case WLAN_CATEGORY_PUBLIC: 8136 case WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION: 8137 ies_len = skb->len - 8138 offsetof(struct ieee80211_mgmt, 8139 u.action.u.ext_chan_switch.variable); 8140 8141 if (ies_len < 0) 8142 break; 8143 8144 /* 8145 * extended CSA IE can't be overridden, no need for 8146 * BSSID 8147 */ 8148 elems = ieee802_11_parse_elems( 8149 mgmt->u.action.u.ext_chan_switch.variable, 8150 ies_len, true, NULL); 8151 8152 if (elems && !elems->parse_error) { 8153 enum ieee80211_csa_source src; 8154 8155 if (mgmt->u.action.category == 8156 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION) 8157 src = IEEE80211_CSA_SOURCE_PROT_ACTION; 8158 else 8159 src = IEEE80211_CSA_SOURCE_UNPROT_ACTION; 8160 8161 /* for the handling code pretend it was an IE */ 8162 elems->ext_chansw_ie = 8163 &mgmt->u.action.u.ext_chan_switch.data; 8164 8165 ieee80211_sta_process_chanswitch(link, 8166 rx_status->mactime, 8167 rx_status->device_timestamp, 8168 elems, elems, 8169 src); 8170 } 8171 8172 kfree(elems); 8173 break; 8174 } 8175 break; 8176 } 8177 } 8178 8179 static void ieee80211_sta_timer(struct timer_list *t) 8180 { 8181 struct ieee80211_sub_if_data *sdata = 8182 timer_container_of(sdata, t, u.mgd.timer); 8183 8184 wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work); 8185 } 8186 8187 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 8188 u8 reason, bool tx) 8189 { 8190 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 8191 8192 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, 8193 tx, frame_buf); 8194 8195 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, 8196 reason, false); 8197 } 8198 8199 static int ieee80211_auth(struct ieee80211_sub_if_data *sdata) 8200 { 8201 struct ieee80211_local *local = sdata->local; 8202 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8203 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; 8204 u32 tx_flags = 0; 8205 u16 trans = 1; 8206 u16 status = 0; 8207 struct ieee80211_prep_tx_info info = { 8208 .subtype = IEEE80211_STYPE_AUTH, 8209 }; 8210 8211 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8212 8213 if (WARN_ON_ONCE(!auth_data)) 8214 return -EINVAL; 8215 8216 auth_data->tries++; 8217 8218 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { 8219 sdata_info(sdata, "authentication with %pM timed out\n", 8220 auth_data->ap_addr); 8221 8222 /* 8223 * Most likely AP is not in the range so remove the 8224 * bss struct for that AP. 8225 */ 8226 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); 8227 8228 return -ETIMEDOUT; 8229 } 8230 8231 if (auth_data->algorithm == WLAN_AUTH_SAE) 8232 info.duration = jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE); 8233 8234 info.link_id = auth_data->link_id; 8235 drv_mgd_prepare_tx(local, sdata, &info); 8236 8237 sdata_info(sdata, "send auth to %pM (try %d/%d)\n", 8238 auth_data->ap_addr, auth_data->tries, 8239 IEEE80211_AUTH_MAX_TRIES); 8240 8241 auth_data->expected_transaction = 2; 8242 8243 if (auth_data->algorithm == WLAN_AUTH_SAE) { 8244 trans = auth_data->sae_trans; 8245 status = auth_data->sae_status; 8246 auth_data->expected_transaction = trans; 8247 } 8248 8249 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 8250 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | 8251 IEEE80211_TX_INTFL_MLME_CONN_TX; 8252 8253 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, 8254 auth_data->data, auth_data->data_len, 8255 auth_data->ap_addr, auth_data->ap_addr, 8256 NULL, 0, 0, tx_flags); 8257 8258 if (tx_flags == 0) { 8259 if (auth_data->algorithm == WLAN_AUTH_SAE) 8260 auth_data->timeout = jiffies + 8261 IEEE80211_AUTH_TIMEOUT_SAE; 8262 else 8263 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; 8264 } else { 8265 auth_data->timeout = 8266 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); 8267 } 8268 8269 auth_data->timeout_started = true; 8270 run_again(sdata, auth_data->timeout); 8271 8272 return 0; 8273 } 8274 8275 static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) 8276 { 8277 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; 8278 struct ieee80211_local *local = sdata->local; 8279 int ret; 8280 8281 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8282 8283 assoc_data->tries++; 8284 assoc_data->comeback = false; 8285 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { 8286 sdata_info(sdata, "association with %pM timed out\n", 8287 assoc_data->ap_addr); 8288 8289 /* 8290 * Most likely AP is not in the range so remove the 8291 * bss struct for that AP. 8292 */ 8293 cfg80211_unlink_bss(local->hw.wiphy, 8294 assoc_data->link[assoc_data->assoc_link_id].bss); 8295 8296 return -ETIMEDOUT; 8297 } 8298 8299 sdata_info(sdata, "associate with %pM (try %d/%d)\n", 8300 assoc_data->ap_addr, assoc_data->tries, 8301 IEEE80211_ASSOC_MAX_TRIES); 8302 ret = ieee80211_send_assoc(sdata); 8303 if (ret) 8304 return ret; 8305 8306 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { 8307 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; 8308 assoc_data->timeout_started = true; 8309 run_again(sdata, assoc_data->timeout); 8310 } else { 8311 assoc_data->timeout = 8312 round_jiffies_up(jiffies + 8313 IEEE80211_ASSOC_TIMEOUT_LONG); 8314 assoc_data->timeout_started = true; 8315 run_again(sdata, assoc_data->timeout); 8316 } 8317 8318 return 0; 8319 } 8320 8321 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 8322 __le16 fc, bool acked) 8323 { 8324 struct ieee80211_local *local = sdata->local; 8325 8326 sdata->u.mgd.status_fc = fc; 8327 sdata->u.mgd.status_acked = acked; 8328 sdata->u.mgd.status_received = true; 8329 8330 wiphy_work_queue(local->hw.wiphy, &sdata->work); 8331 } 8332 8333 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) 8334 { 8335 struct ieee80211_local *local = sdata->local; 8336 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8337 8338 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8339 8340 if (ifmgd->status_received) { 8341 __le16 fc = ifmgd->status_fc; 8342 bool status_acked = ifmgd->status_acked; 8343 8344 ifmgd->status_received = false; 8345 if (ifmgd->auth_data && ieee80211_is_auth(fc)) { 8346 if (status_acked) { 8347 if (ifmgd->auth_data->algorithm == 8348 WLAN_AUTH_SAE) 8349 ifmgd->auth_data->timeout = 8350 jiffies + 8351 IEEE80211_AUTH_TIMEOUT_SAE; 8352 else 8353 ifmgd->auth_data->timeout = 8354 jiffies + 8355 IEEE80211_AUTH_TIMEOUT_SHORT; 8356 run_again(sdata, ifmgd->auth_data->timeout); 8357 } else { 8358 ifmgd->auth_data->timeout = jiffies - 1; 8359 } 8360 ifmgd->auth_data->timeout_started = true; 8361 } else if (ifmgd->assoc_data && 8362 !ifmgd->assoc_data->comeback && 8363 (ieee80211_is_assoc_req(fc) || 8364 ieee80211_is_reassoc_req(fc))) { 8365 /* 8366 * Update association timeout based on the TX status 8367 * for the (Re)Association Request frame. Skip this if 8368 * we have already processed a (Re)Association Response 8369 * frame that indicated need for association comeback 8370 * at a specific time in the future. This could happen 8371 * if the TX status information is delayed enough for 8372 * the response to be received and processed first. 8373 */ 8374 if (status_acked) { 8375 ifmgd->assoc_data->timeout = 8376 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; 8377 run_again(sdata, ifmgd->assoc_data->timeout); 8378 } else { 8379 ifmgd->assoc_data->timeout = jiffies - 1; 8380 } 8381 ifmgd->assoc_data->timeout_started = true; 8382 } 8383 } 8384 8385 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && 8386 time_after(jiffies, ifmgd->auth_data->timeout)) { 8387 if (ifmgd->auth_data->done || ifmgd->auth_data->waiting) { 8388 /* 8389 * ok ... we waited for assoc or continuation but 8390 * userspace didn't do it, so kill the auth data 8391 */ 8392 ieee80211_destroy_auth_data(sdata, false); 8393 } else if (ieee80211_auth(sdata)) { 8394 u8 ap_addr[ETH_ALEN]; 8395 struct ieee80211_event event = { 8396 .type = MLME_EVENT, 8397 .u.mlme.data = AUTH_EVENT, 8398 .u.mlme.status = MLME_TIMEOUT, 8399 }; 8400 8401 memcpy(ap_addr, ifmgd->auth_data->ap_addr, ETH_ALEN); 8402 8403 ieee80211_destroy_auth_data(sdata, false); 8404 8405 cfg80211_auth_timeout(sdata->dev, ap_addr); 8406 drv_event_callback(sdata->local, sdata, &event); 8407 } 8408 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) 8409 run_again(sdata, ifmgd->auth_data->timeout); 8410 8411 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && 8412 time_after(jiffies, ifmgd->assoc_data->timeout)) { 8413 if ((ifmgd->assoc_data->need_beacon && 8414 !sdata->deflink.u.mgd.have_beacon) || 8415 ieee80211_do_assoc(sdata)) { 8416 struct ieee80211_event event = { 8417 .type = MLME_EVENT, 8418 .u.mlme.data = ASSOC_EVENT, 8419 .u.mlme.status = MLME_TIMEOUT, 8420 }; 8421 8422 ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT); 8423 drv_event_callback(sdata->local, sdata, &event); 8424 } 8425 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) 8426 run_again(sdata, ifmgd->assoc_data->timeout); 8427 8428 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && 8429 ifmgd->associated) { 8430 u8 *bssid = sdata->deflink.u.mgd.bssid; 8431 int max_tries; 8432 8433 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) 8434 max_tries = max_nullfunc_tries; 8435 else 8436 max_tries = max_probe_tries; 8437 8438 /* ACK received for nullfunc probing frame */ 8439 if (!ifmgd->probe_send_count) 8440 ieee80211_reset_ap_probe(sdata); 8441 else if (ifmgd->nullfunc_failed) { 8442 if (ifmgd->probe_send_count < max_tries) { 8443 mlme_dbg(sdata, 8444 "No ack for nullfunc frame to AP %pM, try %d/%i\n", 8445 bssid, ifmgd->probe_send_count, 8446 max_tries); 8447 ieee80211_mgd_probe_ap_send(sdata); 8448 } else { 8449 mlme_dbg(sdata, 8450 "No ack for nullfunc frame to AP %pM, disconnecting.\n", 8451 bssid); 8452 ieee80211_sta_connection_lost(sdata, 8453 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, 8454 false); 8455 } 8456 } else if (time_is_after_jiffies(ifmgd->probe_timeout)) 8457 run_again(sdata, ifmgd->probe_timeout); 8458 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { 8459 mlme_dbg(sdata, 8460 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", 8461 bssid, probe_wait_ms); 8462 ieee80211_sta_connection_lost(sdata, 8463 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); 8464 } else if (ifmgd->probe_send_count < max_tries) { 8465 mlme_dbg(sdata, 8466 "No probe response from AP %pM after %dms, try %d/%i\n", 8467 bssid, probe_wait_ms, 8468 ifmgd->probe_send_count, max_tries); 8469 ieee80211_mgd_probe_ap_send(sdata); 8470 } else { 8471 /* 8472 * We actually lost the connection ... or did we? 8473 * Let's make sure! 8474 */ 8475 mlme_dbg(sdata, 8476 "No probe response from AP %pM after %dms, disconnecting.\n", 8477 bssid, probe_wait_ms); 8478 8479 ieee80211_sta_connection_lost(sdata, 8480 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); 8481 } 8482 } 8483 } 8484 8485 static bool 8486 ieee80211_is_csa_in_progress(struct ieee80211_sub_if_data *sdata) 8487 { 8488 /* 8489 * In MLO, check the CSA flags 'active' and 'waiting_bcn' for all 8490 * the links. 8491 */ 8492 struct ieee80211_link_data *link; 8493 8494 guard(rcu)(); 8495 8496 for_each_link_data_rcu(sdata, link) { 8497 if (!(link->conf->csa_active && 8498 !link->u.mgd.csa.waiting_bcn)) 8499 return false; 8500 } 8501 8502 return true; 8503 } 8504 8505 static void ieee80211_sta_bcn_mon_timer(struct timer_list *t) 8506 { 8507 struct ieee80211_sub_if_data *sdata = 8508 timer_container_of(sdata, t, u.mgd.bcn_mon_timer); 8509 8510 if (ieee80211_is_csa_in_progress(sdata)) 8511 return; 8512 8513 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) 8514 return; 8515 8516 sdata->u.mgd.connection_loss = false; 8517 wiphy_work_queue(sdata->local->hw.wiphy, 8518 &sdata->u.mgd.beacon_connection_loss_work); 8519 } 8520 8521 static unsigned long 8522 ieee80211_latest_active_link_conn_timeout(struct ieee80211_sub_if_data *sdata) 8523 { 8524 unsigned long latest_timeout = jiffies; 8525 unsigned int link_id; 8526 struct sta_info *sta; 8527 8528 guard(rcu)(); 8529 8530 sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 8531 if (!sta) 8532 return 0; 8533 8534 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); 8535 link_id++) { 8536 struct link_sta_info *link_sta; 8537 unsigned long timeout; 8538 8539 link_sta = rcu_dereference(sta->link[link_id]); 8540 if (!link_sta) 8541 continue; 8542 8543 timeout = link_sta->status_stats.last_ack; 8544 if (time_before(timeout, link_sta->rx_stats.last_rx)) 8545 timeout = link_sta->rx_stats.last_rx; 8546 8547 timeout += IEEE80211_CONNECTION_IDLE_TIME; 8548 8549 /* 8550 * latest_timeout holds the timeout of the link 8551 * that will expire last among all links in an 8552 * non-AP MLD STA. This ensures that the connection 8553 * monitor timer is only reset if at least one link 8554 * is still active, and it is scheduled to fire at 8555 * the latest possible timeout. 8556 */ 8557 if (time_after(timeout, latest_timeout)) 8558 latest_timeout = timeout; 8559 } 8560 8561 return latest_timeout; 8562 } 8563 8564 static void ieee80211_sta_conn_mon_timer(struct timer_list *t) 8565 { 8566 struct ieee80211_sub_if_data *sdata = 8567 timer_container_of(sdata, t, u.mgd.conn_mon_timer); 8568 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8569 struct ieee80211_local *local = sdata->local; 8570 unsigned long latest_timeout; 8571 8572 if (ieee80211_is_csa_in_progress(sdata)) 8573 return; 8574 8575 latest_timeout = ieee80211_latest_active_link_conn_timeout(sdata); 8576 8577 /* 8578 * If latest timeout is after now, then update timer to fire at 8579 * the later date, but do not actually probe at this time. 8580 */ 8581 if (time_is_after_jiffies(latest_timeout)) { 8582 mod_timer(&ifmgd->conn_mon_timer, 8583 round_jiffies_up(latest_timeout)); 8584 return; 8585 } 8586 8587 wiphy_work_queue(local->hw.wiphy, &sdata->u.mgd.monitor_work); 8588 } 8589 8590 static void ieee80211_sta_monitor_work(struct wiphy *wiphy, 8591 struct wiphy_work *work) 8592 { 8593 struct ieee80211_sub_if_data *sdata = 8594 container_of(work, struct ieee80211_sub_if_data, 8595 u.mgd.monitor_work); 8596 8597 ieee80211_mgd_probe_ap(sdata, false); 8598 } 8599 8600 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) 8601 { 8602 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 8603 __ieee80211_stop_poll(sdata); 8604 8605 /* let's probe the connection once */ 8606 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) 8607 wiphy_work_queue(sdata->local->hw.wiphy, 8608 &sdata->u.mgd.monitor_work); 8609 } 8610 } 8611 8612 #ifdef CONFIG_PM 8613 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) 8614 { 8615 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8616 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 8617 8618 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8619 8620 if (ifmgd->auth_data || ifmgd->assoc_data) { 8621 const u8 *ap_addr = ifmgd->auth_data ? 8622 ifmgd->auth_data->ap_addr : 8623 ifmgd->assoc_data->ap_addr; 8624 8625 /* 8626 * If we are trying to authenticate / associate while suspending, 8627 * cfg80211 won't know and won't actually abort those attempts, 8628 * thus we need to do that ourselves. 8629 */ 8630 ieee80211_send_deauth_disassoc(sdata, ap_addr, ap_addr, 8631 IEEE80211_STYPE_DEAUTH, 8632 WLAN_REASON_DEAUTH_LEAVING, 8633 false, frame_buf); 8634 if (ifmgd->assoc_data) 8635 ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON); 8636 if (ifmgd->auth_data) 8637 ieee80211_destroy_auth_data(sdata, false); 8638 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, 8639 IEEE80211_DEAUTH_FRAME_LEN, 8640 false); 8641 } 8642 8643 /* This is a bit of a hack - we should find a better and more generic 8644 * solution to this. Normally when suspending, cfg80211 will in fact 8645 * deauthenticate. However, it doesn't (and cannot) stop an ongoing 8646 * auth (not so important) or assoc (this is the problem) process. 8647 * 8648 * As a consequence, it can happen that we are in the process of both 8649 * associating and suspending, and receive an association response 8650 * after cfg80211 has checked if it needs to disconnect, but before 8651 * we actually set the flag to drop incoming frames. This will then 8652 * cause the workqueue flush to process the association response in 8653 * the suspend, resulting in a successful association just before it 8654 * tries to remove the interface from the driver, which now though 8655 * has a channel context assigned ... this results in issues. 8656 * 8657 * To work around this (for now) simply deauth here again if we're 8658 * now connected. 8659 */ 8660 if (ifmgd->associated && !sdata->local->wowlan) { 8661 u8 bssid[ETH_ALEN]; 8662 struct cfg80211_deauth_request req = { 8663 .reason_code = WLAN_REASON_DEAUTH_LEAVING, 8664 .bssid = bssid, 8665 }; 8666 8667 memcpy(bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 8668 ieee80211_mgd_deauth(sdata, &req); 8669 } 8670 } 8671 #endif 8672 8673 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) 8674 { 8675 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8676 8677 lockdep_assert_wiphy(sdata->local->hw.wiphy); 8678 8679 if (!ifmgd->associated) 8680 return; 8681 8682 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { 8683 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; 8684 mlme_dbg(sdata, "driver requested disconnect after resume\n"); 8685 ieee80211_sta_connection_lost(sdata, 8686 WLAN_REASON_UNSPECIFIED, 8687 true); 8688 return; 8689 } 8690 8691 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_HW_RESTART) { 8692 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_HW_RESTART; 8693 mlme_dbg(sdata, "driver requested disconnect after hardware restart\n"); 8694 ieee80211_sta_connection_lost(sdata, 8695 WLAN_REASON_UNSPECIFIED, 8696 true); 8697 return; 8698 } 8699 } 8700 8701 static void ieee80211_request_smps_mgd_work(struct wiphy *wiphy, 8702 struct wiphy_work *work) 8703 { 8704 struct ieee80211_link_data *link = 8705 container_of(work, struct ieee80211_link_data, 8706 u.mgd.request_smps_work); 8707 8708 __ieee80211_request_smps_mgd(link->sdata, link, 8709 link->u.mgd.driver_smps_mode); 8710 } 8711 8712 static void ieee80211_ml_sta_reconf_timeout(struct wiphy *wiphy, 8713 struct wiphy_work *work) 8714 { 8715 struct ieee80211_sub_if_data *sdata = 8716 container_of(work, struct ieee80211_sub_if_data, 8717 u.mgd.reconf.wk.work); 8718 8719 if (!sdata->u.mgd.reconf.added_links && 8720 !sdata->u.mgd.reconf.removed_links) 8721 return; 8722 8723 sdata_info(sdata, 8724 "mlo: reconf: timeout: added=0x%x, removed=0x%x\n", 8725 sdata->u.mgd.reconf.added_links, 8726 sdata->u.mgd.reconf.removed_links); 8727 8728 __ieee80211_disconnect(sdata); 8729 } 8730 8731 /* interface setup */ 8732 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) 8733 { 8734 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8735 8736 wiphy_work_init(&ifmgd->monitor_work, ieee80211_sta_monitor_work); 8737 wiphy_work_init(&ifmgd->beacon_connection_loss_work, 8738 ieee80211_beacon_connection_loss_work); 8739 wiphy_work_init(&ifmgd->csa_connection_drop_work, 8740 ieee80211_csa_connection_drop_work); 8741 wiphy_delayed_work_init(&ifmgd->tdls_peer_del_work, 8742 ieee80211_tdls_peer_del_work); 8743 wiphy_delayed_work_init(&ifmgd->ml_reconf_work, 8744 ieee80211_ml_reconf_work); 8745 wiphy_delayed_work_init(&ifmgd->reconf.wk, 8746 ieee80211_ml_sta_reconf_timeout); 8747 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0); 8748 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0); 8749 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0); 8750 wiphy_delayed_work_init(&ifmgd->tx_tspec_wk, 8751 ieee80211_sta_handle_tspec_ac_params_wk); 8752 wiphy_delayed_work_init(&ifmgd->ttlm_work, 8753 ieee80211_tid_to_link_map_work); 8754 wiphy_delayed_work_init(&ifmgd->neg_ttlm_timeout_work, 8755 ieee80211_neg_ttlm_timeout_work); 8756 wiphy_work_init(&ifmgd->teardown_ttlm_work, 8757 ieee80211_teardown_ttlm_work); 8758 8759 ifmgd->flags = 0; 8760 ifmgd->powersave = sdata->wdev.ps; 8761 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; 8762 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; 8763 /* Setup TDLS data */ 8764 spin_lock_init(&ifmgd->teardown_lock); 8765 ifmgd->teardown_skb = NULL; 8766 ifmgd->orig_teardown_skb = NULL; 8767 ifmgd->mcast_seq_last = IEEE80211_SN_MODULO; 8768 } 8769 8770 static void ieee80211_recalc_smps_work(struct wiphy *wiphy, 8771 struct wiphy_work *work) 8772 { 8773 struct ieee80211_link_data *link = 8774 container_of(work, struct ieee80211_link_data, 8775 u.mgd.recalc_smps); 8776 8777 ieee80211_recalc_smps(link->sdata, link); 8778 } 8779 8780 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link) 8781 { 8782 struct ieee80211_sub_if_data *sdata = link->sdata; 8783 struct ieee80211_local *local = sdata->local; 8784 unsigned int link_id = link->link_id; 8785 8786 link->u.mgd.p2p_noa_index = -1; 8787 link->conf->bssid = link->u.mgd.bssid; 8788 link->smps_mode = IEEE80211_SMPS_OFF; 8789 8790 wiphy_work_init(&link->u.mgd.request_smps_work, 8791 ieee80211_request_smps_mgd_work); 8792 wiphy_work_init(&link->u.mgd.recalc_smps, 8793 ieee80211_recalc_smps_work); 8794 if (local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) 8795 link->u.mgd.req_smps = IEEE80211_SMPS_AUTOMATIC; 8796 else 8797 link->u.mgd.req_smps = IEEE80211_SMPS_OFF; 8798 8799 wiphy_delayed_work_init(&link->u.mgd.csa.switch_work, 8800 ieee80211_csa_switch_work); 8801 8802 ieee80211_clear_tpe(&link->conf->tpe); 8803 8804 if (sdata->u.mgd.assoc_data) 8805 ether_addr_copy(link->conf->addr, 8806 sdata->u.mgd.assoc_data->link[link_id].addr); 8807 else if (sdata->u.mgd.reconf.add_links_data) 8808 ether_addr_copy(link->conf->addr, 8809 sdata->u.mgd.reconf.add_links_data->link[link_id].addr); 8810 else if (!is_valid_ether_addr(link->conf->addr)) 8811 eth_random_addr(link->conf->addr); 8812 } 8813 8814 /* scan finished notification */ 8815 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) 8816 { 8817 struct ieee80211_sub_if_data *sdata; 8818 8819 /* Restart STA timers */ 8820 rcu_read_lock(); 8821 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 8822 if (ieee80211_sdata_running(sdata)) 8823 ieee80211_restart_sta_timer(sdata); 8824 } 8825 rcu_read_unlock(); 8826 } 8827 8828 static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, 8829 struct cfg80211_bss *cbss, s8 link_id, 8830 const u8 *ap_mld_addr, bool assoc, 8831 struct ieee80211_conn_settings *conn, 8832 bool override, 8833 unsigned long *userspace_selectors) 8834 { 8835 struct ieee80211_local *local = sdata->local; 8836 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 8837 struct ieee80211_bss *bss = (void *)cbss->priv; 8838 struct sta_info *new_sta = NULL; 8839 struct ieee80211_link_data *link; 8840 bool have_sta = false; 8841 bool mlo; 8842 int err; 8843 u16 new_links; 8844 8845 if (link_id >= 0) { 8846 mlo = true; 8847 if (WARN_ON(!ap_mld_addr)) 8848 return -EINVAL; 8849 new_links = BIT(link_id); 8850 } else { 8851 if (WARN_ON(ap_mld_addr)) 8852 return -EINVAL; 8853 ap_mld_addr = cbss->bssid; 8854 new_links = 0; 8855 link_id = 0; 8856 mlo = false; 8857 } 8858 8859 if (assoc) { 8860 rcu_read_lock(); 8861 have_sta = sta_info_get(sdata, ap_mld_addr); 8862 rcu_read_unlock(); 8863 } 8864 8865 if (mlo && !have_sta && 8866 WARN_ON(sdata->vif.valid_links || sdata->vif.active_links)) 8867 return -EINVAL; 8868 8869 err = ieee80211_vif_set_links(sdata, new_links, 0); 8870 if (err) 8871 return err; 8872 8873 link = sdata_dereference(sdata->link[link_id], sdata); 8874 if (WARN_ON(!link)) { 8875 err = -ENOLINK; 8876 goto out_err; 8877 } 8878 8879 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) { 8880 err = -EINVAL; 8881 goto out_err; 8882 } 8883 8884 /* If a reconfig is happening, bail out */ 8885 if (local->in_reconfig) { 8886 err = -EBUSY; 8887 goto out_err; 8888 } 8889 8890 if (!have_sta) { 8891 if (mlo) 8892 new_sta = sta_info_alloc_with_link(sdata, ap_mld_addr, 8893 link_id, cbss->bssid, 8894 GFP_KERNEL); 8895 else 8896 new_sta = sta_info_alloc(sdata, ap_mld_addr, GFP_KERNEL); 8897 8898 if (!new_sta) { 8899 err = -ENOMEM; 8900 goto out_err; 8901 } 8902 8903 new_sta->sta.mlo = mlo; 8904 } 8905 8906 /* 8907 * Set up the information for the new channel before setting the 8908 * new channel. We can't - completely race-free - change the basic 8909 * rates bitmap and the channel (sband) that it refers to, but if 8910 * we set it up before we at least avoid calling into the driver's 8911 * bss_info_changed() method with invalid information (since we do 8912 * call that from changing the channel - only for IDLE and perhaps 8913 * some others, but ...). 8914 * 8915 * So to avoid that, just set up all the new information before the 8916 * channel, but tell the driver to apply it only afterwards, since 8917 * it might need the new channel for that. 8918 */ 8919 if (new_sta) { 8920 const struct cfg80211_bss_ies *ies; 8921 struct link_sta_info *link_sta; 8922 8923 rcu_read_lock(); 8924 link_sta = rcu_dereference(new_sta->link[link_id]); 8925 if (WARN_ON(!link_sta)) { 8926 rcu_read_unlock(); 8927 sta_info_free(local, new_sta); 8928 err = -EINVAL; 8929 goto out_err; 8930 } 8931 8932 err = ieee80211_mgd_setup_link_sta(link, new_sta, 8933 link_sta, cbss); 8934 if (err) { 8935 rcu_read_unlock(); 8936 sta_info_free(local, new_sta); 8937 goto out_err; 8938 } 8939 8940 memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN); 8941 8942 /* set timing information */ 8943 link->conf->beacon_int = cbss->beacon_interval; 8944 ies = rcu_dereference(cbss->beacon_ies); 8945 if (ies) { 8946 link->conf->sync_tsf = ies->tsf; 8947 link->conf->sync_device_ts = 8948 bss->device_ts_beacon; 8949 8950 ieee80211_get_dtim(ies, 8951 &link->conf->sync_dtim_count, 8952 NULL); 8953 } else if (!ieee80211_hw_check(&sdata->local->hw, 8954 TIMING_BEACON_ONLY)) { 8955 ies = rcu_dereference(cbss->proberesp_ies); 8956 /* must be non-NULL since beacon IEs were NULL */ 8957 link->conf->sync_tsf = ies->tsf; 8958 link->conf->sync_device_ts = 8959 bss->device_ts_presp; 8960 link->conf->sync_dtim_count = 0; 8961 } else { 8962 link->conf->sync_tsf = 0; 8963 link->conf->sync_device_ts = 0; 8964 link->conf->sync_dtim_count = 0; 8965 } 8966 rcu_read_unlock(); 8967 } 8968 8969 if (new_sta || override) { 8970 /* 8971 * Only set this if we're also going to calculate the AP 8972 * settings etc., otherwise this was set before in a 8973 * previous call. Note override is set to %true in assoc 8974 * if the settings were changed. 8975 */ 8976 link->u.mgd.conn = *conn; 8977 err = ieee80211_prep_channel(sdata, link, link->link_id, cbss, 8978 mlo, &link->u.mgd.conn, 8979 userspace_selectors); 8980 if (err) { 8981 if (new_sta) 8982 sta_info_free(local, new_sta); 8983 goto out_err; 8984 } 8985 /* pass out for use in assoc */ 8986 *conn = link->u.mgd.conn; 8987 } 8988 8989 if (new_sta) { 8990 /* 8991 * tell driver about BSSID, basic rates and timing 8992 * this was set up above, before setting the channel 8993 */ 8994 ieee80211_link_info_change_notify(sdata, link, 8995 BSS_CHANGED_BSSID | 8996 BSS_CHANGED_BASIC_RATES | 8997 BSS_CHANGED_BEACON_INT); 8998 8999 if (assoc) 9000 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); 9001 9002 err = sta_info_insert(new_sta); 9003 new_sta = NULL; 9004 if (err) { 9005 sdata_info(sdata, 9006 "failed to insert STA entry for the AP (error %d)\n", 9007 err); 9008 goto out_release_chan; 9009 } 9010 } else 9011 WARN_ON_ONCE(!ether_addr_equal(link->u.mgd.bssid, cbss->bssid)); 9012 9013 /* Cancel scan to ensure that nothing interferes with connection */ 9014 if (local->scanning) 9015 ieee80211_scan_cancel(local); 9016 9017 return 0; 9018 9019 out_release_chan: 9020 ieee80211_link_release_channel(link); 9021 out_err: 9022 ieee80211_vif_set_links(sdata, 0, 0); 9023 return err; 9024 } 9025 9026 static bool ieee80211_mgd_csa_present(struct ieee80211_sub_if_data *sdata, 9027 const struct cfg80211_bss_ies *ies, 9028 u8 cur_channel, bool ignore_ecsa) 9029 { 9030 const struct element *csa_elem, *ecsa_elem; 9031 struct ieee80211_channel_sw_ie *csa = NULL; 9032 struct ieee80211_ext_chansw_ie *ecsa = NULL; 9033 9034 if (!ies) 9035 return false; 9036 9037 csa_elem = cfg80211_find_elem(WLAN_EID_CHANNEL_SWITCH, 9038 ies->data, ies->len); 9039 if (csa_elem && csa_elem->datalen == sizeof(*csa)) 9040 csa = (void *)csa_elem->data; 9041 9042 ecsa_elem = cfg80211_find_elem(WLAN_EID_EXT_CHANSWITCH_ANN, 9043 ies->data, ies->len); 9044 if (ecsa_elem && ecsa_elem->datalen == sizeof(*ecsa)) 9045 ecsa = (void *)ecsa_elem->data; 9046 9047 if (csa && csa->count == 0) 9048 csa = NULL; 9049 if (csa && !csa->mode && csa->new_ch_num == cur_channel) 9050 csa = NULL; 9051 9052 if (ecsa && ecsa->count == 0) 9053 ecsa = NULL; 9054 if (ecsa && !ecsa->mode && ecsa->new_ch_num == cur_channel) 9055 ecsa = NULL; 9056 9057 if (ignore_ecsa && ecsa) { 9058 sdata_info(sdata, 9059 "Ignoring ECSA in probe response - was considered stuck!\n"); 9060 return csa; 9061 } 9062 9063 return csa || ecsa; 9064 } 9065 9066 static bool ieee80211_mgd_csa_in_process(struct ieee80211_sub_if_data *sdata, 9067 struct cfg80211_bss *bss) 9068 { 9069 u8 cur_channel; 9070 bool ret; 9071 9072 cur_channel = ieee80211_frequency_to_channel(bss->channel->center_freq); 9073 9074 rcu_read_lock(); 9075 if (ieee80211_mgd_csa_present(sdata, 9076 rcu_dereference(bss->beacon_ies), 9077 cur_channel, false)) { 9078 ret = true; 9079 goto out; 9080 } 9081 9082 if (ieee80211_mgd_csa_present(sdata, 9083 rcu_dereference(bss->proberesp_ies), 9084 cur_channel, bss->proberesp_ecsa_stuck)) { 9085 ret = true; 9086 goto out; 9087 } 9088 9089 ret = false; 9090 out: 9091 rcu_read_unlock(); 9092 return ret; 9093 } 9094 9095 static void ieee80211_parse_cfg_selectors(unsigned long *userspace_selectors, 9096 const u8 *supported_selectors, 9097 u8 supported_selectors_len) 9098 { 9099 if (supported_selectors) { 9100 for (int i = 0; i < supported_selectors_len; i++) { 9101 set_bit(supported_selectors[i], 9102 userspace_selectors); 9103 } 9104 } else { 9105 /* Assume SAE_H2E support for backward compatibility. */ 9106 set_bit(BSS_MEMBERSHIP_SELECTOR_SAE_H2E, 9107 userspace_selectors); 9108 } 9109 } 9110 9111 /* config hooks */ 9112 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 9113 struct cfg80211_auth_request *req) 9114 { 9115 struct ieee80211_local *local = sdata->local; 9116 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 9117 struct ieee80211_mgd_auth_data *auth_data; 9118 struct ieee80211_conn_settings conn; 9119 struct ieee80211_link_data *link; 9120 struct ieee80211_supported_band *sband; 9121 struct ieee80211_bss *bss; 9122 u16 auth_alg; 9123 int err; 9124 bool cont_auth, wmm_used; 9125 9126 lockdep_assert_wiphy(sdata->local->hw.wiphy); 9127 9128 /* prepare auth data structure */ 9129 9130 switch (req->auth_type) { 9131 case NL80211_AUTHTYPE_OPEN_SYSTEM: 9132 auth_alg = WLAN_AUTH_OPEN; 9133 break; 9134 case NL80211_AUTHTYPE_SHARED_KEY: 9135 if (fips_enabled) 9136 return -EOPNOTSUPP; 9137 auth_alg = WLAN_AUTH_SHARED_KEY; 9138 break; 9139 case NL80211_AUTHTYPE_FT: 9140 auth_alg = WLAN_AUTH_FT; 9141 break; 9142 case NL80211_AUTHTYPE_NETWORK_EAP: 9143 auth_alg = WLAN_AUTH_LEAP; 9144 break; 9145 case NL80211_AUTHTYPE_SAE: 9146 auth_alg = WLAN_AUTH_SAE; 9147 break; 9148 case NL80211_AUTHTYPE_FILS_SK: 9149 auth_alg = WLAN_AUTH_FILS_SK; 9150 break; 9151 case NL80211_AUTHTYPE_FILS_SK_PFS: 9152 auth_alg = WLAN_AUTH_FILS_SK_PFS; 9153 break; 9154 case NL80211_AUTHTYPE_FILS_PK: 9155 auth_alg = WLAN_AUTH_FILS_PK; 9156 break; 9157 default: 9158 return -EOPNOTSUPP; 9159 } 9160 9161 if (ifmgd->assoc_data) 9162 return -EBUSY; 9163 9164 if (ieee80211_mgd_csa_in_process(sdata, req->bss)) { 9165 sdata_info(sdata, "AP is in CSA process, reject auth\n"); 9166 return -EINVAL; 9167 } 9168 9169 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len + 9170 req->ie_len, GFP_KERNEL); 9171 if (!auth_data) 9172 return -ENOMEM; 9173 9174 memcpy(auth_data->ap_addr, 9175 req->ap_mld_addr ?: req->bss->bssid, 9176 ETH_ALEN); 9177 auth_data->bss = req->bss; 9178 auth_data->link_id = req->link_id; 9179 9180 if (req->auth_data_len >= 4) { 9181 if (req->auth_type == NL80211_AUTHTYPE_SAE) { 9182 __le16 *pos = (__le16 *) req->auth_data; 9183 9184 auth_data->sae_trans = le16_to_cpu(pos[0]); 9185 auth_data->sae_status = le16_to_cpu(pos[1]); 9186 } 9187 memcpy(auth_data->data, req->auth_data + 4, 9188 req->auth_data_len - 4); 9189 auth_data->data_len += req->auth_data_len - 4; 9190 } 9191 9192 /* Check if continuing authentication or trying to authenticate with the 9193 * same BSS that we were in the process of authenticating with and avoid 9194 * removal and re-addition of the STA entry in 9195 * ieee80211_prep_connection(). 9196 */ 9197 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss && 9198 ifmgd->auth_data->link_id == req->link_id; 9199 9200 if (req->ie && req->ie_len) { 9201 memcpy(&auth_data->data[auth_data->data_len], 9202 req->ie, req->ie_len); 9203 auth_data->data_len += req->ie_len; 9204 } 9205 9206 if (req->key && req->key_len) { 9207 auth_data->key_len = req->key_len; 9208 auth_data->key_idx = req->key_idx; 9209 memcpy(auth_data->key, req->key, req->key_len); 9210 } 9211 9212 ieee80211_parse_cfg_selectors(auth_data->userspace_selectors, 9213 req->supported_selectors, 9214 req->supported_selectors_len); 9215 9216 auth_data->algorithm = auth_alg; 9217 9218 /* try to authenticate/probe */ 9219 9220 if (ifmgd->auth_data) { 9221 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) { 9222 auth_data->peer_confirmed = 9223 ifmgd->auth_data->peer_confirmed; 9224 } 9225 ieee80211_destroy_auth_data(sdata, cont_auth); 9226 } 9227 9228 /* prep auth_data so we don't go into idle on disassoc */ 9229 ifmgd->auth_data = auth_data; 9230 9231 /* If this is continuation of an ongoing SAE authentication exchange 9232 * (i.e., request to send SAE Confirm) and the peer has already 9233 * confirmed, mark authentication completed since we are about to send 9234 * out SAE Confirm. 9235 */ 9236 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE && 9237 auth_data->peer_confirmed && auth_data->sae_trans == 2) 9238 ieee80211_mark_sta_auth(sdata); 9239 9240 if (ifmgd->associated) { 9241 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 9242 9243 sdata_info(sdata, 9244 "disconnect from AP %pM for new auth to %pM\n", 9245 sdata->vif.cfg.ap_addr, auth_data->ap_addr); 9246 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, 9247 WLAN_REASON_UNSPECIFIED, 9248 false, frame_buf); 9249 9250 ieee80211_report_disconnect(sdata, frame_buf, 9251 sizeof(frame_buf), true, 9252 WLAN_REASON_UNSPECIFIED, 9253 false); 9254 } 9255 9256 /* needed for transmitting the auth frame(s) properly */ 9257 memcpy(sdata->vif.cfg.ap_addr, auth_data->ap_addr, ETH_ALEN); 9258 9259 bss = (void *)req->bss->priv; 9260 wmm_used = bss->wmm_used && (local->hw.queues >= IEEE80211_NUM_ACS); 9261 9262 sband = local->hw.wiphy->bands[req->bss->channel->band]; 9263 9264 ieee80211_determine_our_sta_mode_auth(sdata, sband, req, wmm_used, 9265 &conn); 9266 9267 err = ieee80211_prep_connection(sdata, req->bss, req->link_id, 9268 req->ap_mld_addr, cont_auth, 9269 &conn, false, 9270 auth_data->userspace_selectors); 9271 if (err) 9272 goto err_clear; 9273 9274 if (req->link_id >= 0) 9275 link = sdata_dereference(sdata->link[req->link_id], sdata); 9276 else 9277 link = &sdata->deflink; 9278 9279 if (WARN_ON(!link)) { 9280 err = -ENOLINK; 9281 goto err_clear; 9282 } 9283 9284 sdata_info(sdata, "authenticate with %pM (local address=%pM)\n", 9285 auth_data->ap_addr, link->conf->addr); 9286 9287 err = ieee80211_auth(sdata); 9288 if (err) { 9289 sta_info_destroy_addr(sdata, auth_data->ap_addr); 9290 goto err_clear; 9291 } 9292 9293 /* hold our own reference */ 9294 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); 9295 return 0; 9296 9297 err_clear: 9298 if (!ieee80211_vif_is_mld(&sdata->vif)) { 9299 eth_zero_addr(sdata->deflink.u.mgd.bssid); 9300 ieee80211_link_info_change_notify(sdata, &sdata->deflink, 9301 BSS_CHANGED_BSSID); 9302 ieee80211_link_release_channel(&sdata->deflink); 9303 } 9304 ifmgd->auth_data = NULL; 9305 kfree(auth_data); 9306 return err; 9307 } 9308 9309 static void 9310 ieee80211_setup_assoc_link(struct ieee80211_sub_if_data *sdata, 9311 struct ieee80211_mgd_assoc_data *assoc_data, 9312 struct cfg80211_assoc_request *req, 9313 struct ieee80211_conn_settings *conn, 9314 unsigned int link_id) 9315 { 9316 struct ieee80211_local *local = sdata->local; 9317 const struct cfg80211_bss_ies *bss_ies; 9318 struct ieee80211_supported_band *sband; 9319 struct ieee80211_link_data *link; 9320 struct cfg80211_bss *cbss; 9321 struct ieee80211_bss *bss; 9322 9323 cbss = assoc_data->link[link_id].bss; 9324 if (WARN_ON(!cbss)) 9325 return; 9326 9327 bss = (void *)cbss->priv; 9328 9329 sband = local->hw.wiphy->bands[cbss->channel->band]; 9330 if (WARN_ON(!sband)) 9331 return; 9332 9333 link = sdata_dereference(sdata->link[link_id], sdata); 9334 if (WARN_ON(!link)) 9335 return; 9336 9337 /* for MLO connections assume advertising all rates is OK */ 9338 if (!req->ap_mld_addr) { 9339 assoc_data->supp_rates = bss->supp_rates; 9340 assoc_data->supp_rates_len = bss->supp_rates_len; 9341 } 9342 9343 /* copy and link elems for the STA profile */ 9344 if (req->links[link_id].elems_len) { 9345 memcpy(assoc_data->ie_pos, req->links[link_id].elems, 9346 req->links[link_id].elems_len); 9347 assoc_data->link[link_id].elems = assoc_data->ie_pos; 9348 assoc_data->link[link_id].elems_len = req->links[link_id].elems_len; 9349 assoc_data->ie_pos += req->links[link_id].elems_len; 9350 } 9351 9352 link->u.mgd.beacon_crc_valid = false; 9353 link->u.mgd.dtim_period = 0; 9354 link->u.mgd.have_beacon = false; 9355 9356 /* override HT configuration only if the AP and we support it */ 9357 if (conn->mode >= IEEE80211_CONN_MODE_HT) { 9358 struct ieee80211_sta_ht_cap sta_ht_cap; 9359 9360 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); 9361 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); 9362 } 9363 9364 rcu_read_lock(); 9365 bss_ies = rcu_dereference(cbss->beacon_ies); 9366 if (bss_ies) { 9367 u8 dtim_count = 0; 9368 9369 ieee80211_get_dtim(bss_ies, &dtim_count, 9370 &link->u.mgd.dtim_period); 9371 9372 sdata->deflink.u.mgd.have_beacon = true; 9373 9374 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { 9375 link->conf->sync_tsf = bss_ies->tsf; 9376 link->conf->sync_device_ts = bss->device_ts_beacon; 9377 link->conf->sync_dtim_count = dtim_count; 9378 } 9379 } else { 9380 bss_ies = rcu_dereference(cbss->ies); 9381 } 9382 9383 if (bss_ies) { 9384 const struct element *elem; 9385 9386 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION, 9387 bss_ies->data, bss_ies->len); 9388 if (elem && elem->datalen >= 3) 9389 link->conf->profile_periodicity = elem->data[2]; 9390 else 9391 link->conf->profile_periodicity = 0; 9392 9393 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, 9394 bss_ies->data, bss_ies->len); 9395 if (elem && elem->datalen >= 11 && 9396 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT)) 9397 link->conf->ema_ap = true; 9398 else 9399 link->conf->ema_ap = false; 9400 } 9401 rcu_read_unlock(); 9402 9403 if (bss->corrupt_data) { 9404 char *corrupt_type = "data"; 9405 9406 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { 9407 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) 9408 corrupt_type = "beacon and probe response"; 9409 else 9410 corrupt_type = "beacon"; 9411 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) { 9412 corrupt_type = "probe response"; 9413 } 9414 sdata_info(sdata, "associating to AP %pM with corrupt %s\n", 9415 cbss->bssid, corrupt_type); 9416 } 9417 9418 if (link->u.mgd.req_smps == IEEE80211_SMPS_AUTOMATIC) { 9419 if (sdata->u.mgd.powersave) 9420 link->smps_mode = IEEE80211_SMPS_DYNAMIC; 9421 else 9422 link->smps_mode = IEEE80211_SMPS_OFF; 9423 } else { 9424 link->smps_mode = link->u.mgd.req_smps; 9425 } 9426 } 9427 9428 static int 9429 ieee80211_mgd_get_ap_ht_vht_capa(struct ieee80211_sub_if_data *sdata, 9430 struct ieee80211_mgd_assoc_data *assoc_data, 9431 int link_id) 9432 { 9433 struct cfg80211_bss *cbss = assoc_data->link[link_id].bss; 9434 enum nl80211_band band = cbss->channel->band; 9435 struct ieee80211_supported_band *sband; 9436 const struct element *elem; 9437 int err; 9438 9439 /* neither HT nor VHT elements used on 6 GHz */ 9440 if (band == NL80211_BAND_6GHZ) 9441 return 0; 9442 9443 if (assoc_data->link[link_id].conn.mode < IEEE80211_CONN_MODE_HT) 9444 return 0; 9445 9446 rcu_read_lock(); 9447 elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_OPERATION); 9448 if (!elem || elem->datalen < sizeof(struct ieee80211_ht_operation)) { 9449 mlme_link_id_dbg(sdata, link_id, "no HT operation on BSS %pM\n", 9450 cbss->bssid); 9451 err = -EINVAL; 9452 goto out_rcu; 9453 } 9454 assoc_data->link[link_id].ap_ht_param = 9455 ((struct ieee80211_ht_operation *)(elem->data))->ht_param; 9456 rcu_read_unlock(); 9457 9458 if (assoc_data->link[link_id].conn.mode < IEEE80211_CONN_MODE_VHT) 9459 return 0; 9460 9461 /* some drivers want to support VHT on 2.4 GHz even */ 9462 sband = sdata->local->hw.wiphy->bands[band]; 9463 if (!sband->vht_cap.vht_supported) 9464 return 0; 9465 9466 rcu_read_lock(); 9467 elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY); 9468 /* but even then accept it not being present on the AP */ 9469 if (!elem && band == NL80211_BAND_2GHZ) { 9470 err = 0; 9471 goto out_rcu; 9472 } 9473 if (!elem || elem->datalen < sizeof(struct ieee80211_vht_cap)) { 9474 mlme_link_id_dbg(sdata, link_id, "no VHT capa on BSS %pM\n", 9475 cbss->bssid); 9476 err = -EINVAL; 9477 goto out_rcu; 9478 } 9479 memcpy(&assoc_data->link[link_id].ap_vht_cap, elem->data, 9480 sizeof(struct ieee80211_vht_cap)); 9481 rcu_read_unlock(); 9482 9483 return 0; 9484 out_rcu: 9485 rcu_read_unlock(); 9486 return err; 9487 } 9488 9489 static bool 9490 ieee80211_mgd_assoc_bss_has_mld_ext_capa_ops(struct cfg80211_assoc_request *req) 9491 { 9492 const struct cfg80211_bss_ies *ies; 9493 struct cfg80211_bss *bss; 9494 const struct element *ml; 9495 9496 /* not an MLO connection if link_id < 0, so irrelevant */ 9497 if (req->link_id < 0) 9498 return false; 9499 9500 bss = req->links[req->link_id].bss; 9501 9502 guard(rcu)(); 9503 ies = rcu_dereference(bss->ies); 9504 for_each_element_extid(ml, WLAN_EID_EXT_EHT_MULTI_LINK, 9505 ies->data, ies->len) { 9506 const struct ieee80211_multi_link_elem *mle; 9507 9508 if (!ieee80211_mle_type_ok(ml->data + 1, 9509 IEEE80211_ML_CONTROL_TYPE_BASIC, 9510 ml->datalen - 1)) 9511 continue; 9512 9513 mle = (void *)(ml->data + 1); 9514 if (mle->control & cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP)) 9515 return true; 9516 } 9517 9518 return false; 9519 9520 } 9521 9522 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 9523 struct cfg80211_assoc_request *req) 9524 { 9525 unsigned int assoc_link_id = req->link_id < 0 ? 0 : req->link_id; 9526 struct ieee80211_local *local = sdata->local; 9527 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 9528 struct ieee80211_mgd_assoc_data *assoc_data; 9529 const struct element *ssid_elem; 9530 struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg; 9531 struct ieee80211_link_data *link; 9532 struct cfg80211_bss *cbss; 9533 bool override, uapsd_supported; 9534 bool match_auth; 9535 int i, err; 9536 size_t size = sizeof(*assoc_data) + req->ie_len; 9537 9538 for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) 9539 size += req->links[i].elems_len; 9540 9541 /* FIXME: no support for 4-addr MLO yet */ 9542 if (sdata->u.mgd.use_4addr && req->link_id >= 0) 9543 return -EOPNOTSUPP; 9544 9545 assoc_data = kzalloc(size, GFP_KERNEL); 9546 if (!assoc_data) 9547 return -ENOMEM; 9548 9549 cbss = req->link_id < 0 ? req->bss : req->links[req->link_id].bss; 9550 9551 if (ieee80211_mgd_csa_in_process(sdata, cbss)) { 9552 sdata_info(sdata, "AP is in CSA process, reject assoc\n"); 9553 err = -EINVAL; 9554 goto err_free; 9555 } 9556 9557 rcu_read_lock(); 9558 ssid_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID); 9559 if (!ssid_elem || ssid_elem->datalen > sizeof(assoc_data->ssid)) { 9560 rcu_read_unlock(); 9561 err = -EINVAL; 9562 goto err_free; 9563 } 9564 9565 memcpy(assoc_data->ssid, ssid_elem->data, ssid_elem->datalen); 9566 assoc_data->ssid_len = ssid_elem->datalen; 9567 rcu_read_unlock(); 9568 9569 if (req->ap_mld_addr) 9570 memcpy(assoc_data->ap_addr, req->ap_mld_addr, ETH_ALEN); 9571 else 9572 memcpy(assoc_data->ap_addr, cbss->bssid, ETH_ALEN); 9573 9574 /* 9575 * Many APs have broken parsing of the extended MLD capa/ops field, 9576 * dropping (re-)association request frames or replying with association 9577 * response with a failure status if it's present. 9578 * Set our value from the userspace request only in strict mode or if 9579 * the AP also had that field present. 9580 */ 9581 if (ieee80211_hw_check(&local->hw, STRICT) || 9582 ieee80211_mgd_assoc_bss_has_mld_ext_capa_ops(req)) 9583 assoc_data->ext_mld_capa_ops = 9584 cpu_to_le16(req->ext_mld_capa_ops); 9585 9586 if (ifmgd->associated) { 9587 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 9588 9589 sdata_info(sdata, 9590 "disconnect from AP %pM for new assoc to %pM\n", 9591 sdata->vif.cfg.ap_addr, assoc_data->ap_addr); 9592 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, 9593 WLAN_REASON_UNSPECIFIED, 9594 false, frame_buf); 9595 9596 ieee80211_report_disconnect(sdata, frame_buf, 9597 sizeof(frame_buf), true, 9598 WLAN_REASON_UNSPECIFIED, 9599 false); 9600 } 9601 9602 memset(sdata->u.mgd.userspace_selectors, 0, 9603 sizeof(sdata->u.mgd.userspace_selectors)); 9604 ieee80211_parse_cfg_selectors(sdata->u.mgd.userspace_selectors, 9605 req->supported_selectors, 9606 req->supported_selectors_len); 9607 9608 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); 9609 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, 9610 sizeof(ifmgd->ht_capa_mask)); 9611 9612 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); 9613 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, 9614 sizeof(ifmgd->vht_capa_mask)); 9615 9616 memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa)); 9617 memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask, 9618 sizeof(ifmgd->s1g_capa_mask)); 9619 9620 /* keep some setup (AP STA, channel, ...) if matching */ 9621 match_auth = ifmgd->auth_data && 9622 ether_addr_equal(ifmgd->auth_data->ap_addr, 9623 assoc_data->ap_addr) && 9624 ifmgd->auth_data->link_id == req->link_id; 9625 9626 if (req->ap_mld_addr) { 9627 uapsd_supported = true; 9628 9629 if (req->flags & (ASSOC_REQ_DISABLE_HT | 9630 ASSOC_REQ_DISABLE_VHT | 9631 ASSOC_REQ_DISABLE_HE | 9632 ASSOC_REQ_DISABLE_EHT)) { 9633 err = -EINVAL; 9634 goto err_free; 9635 } 9636 9637 for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 9638 struct ieee80211_supported_band *sband; 9639 struct cfg80211_bss *link_cbss = req->links[i].bss; 9640 struct ieee80211_bss *bss; 9641 9642 if (!link_cbss) 9643 continue; 9644 9645 bss = (void *)link_cbss->priv; 9646 9647 if (!bss->wmm_used) { 9648 err = -EINVAL; 9649 req->links[i].error = err; 9650 goto err_free; 9651 } 9652 9653 if (link_cbss->channel->band == NL80211_BAND_S1GHZ) { 9654 err = -EINVAL; 9655 req->links[i].error = err; 9656 goto err_free; 9657 } 9658 9659 link = sdata_dereference(sdata->link[i], sdata); 9660 if (link) 9661 ether_addr_copy(assoc_data->link[i].addr, 9662 link->conf->addr); 9663 else 9664 eth_random_addr(assoc_data->link[i].addr); 9665 sband = local->hw.wiphy->bands[link_cbss->channel->band]; 9666 9667 if (match_auth && i == assoc_link_id && link) 9668 assoc_data->link[i].conn = link->u.mgd.conn; 9669 else 9670 assoc_data->link[i].conn = 9671 ieee80211_conn_settings_unlimited; 9672 ieee80211_determine_our_sta_mode_assoc(sdata, sband, 9673 req, true, i, 9674 &assoc_data->link[i].conn); 9675 assoc_data->link[i].bss = link_cbss; 9676 assoc_data->link[i].disabled = req->links[i].disabled; 9677 9678 if (!bss->uapsd_supported) 9679 uapsd_supported = false; 9680 9681 if (assoc_data->link[i].conn.mode < IEEE80211_CONN_MODE_EHT) { 9682 err = -EINVAL; 9683 req->links[i].error = err; 9684 goto err_free; 9685 } 9686 9687 err = ieee80211_mgd_get_ap_ht_vht_capa(sdata, 9688 assoc_data, i); 9689 if (err) { 9690 err = -EINVAL; 9691 req->links[i].error = err; 9692 goto err_free; 9693 } 9694 } 9695 9696 assoc_data->wmm = true; 9697 } else { 9698 struct ieee80211_supported_band *sband; 9699 struct ieee80211_bss *bss = (void *)cbss->priv; 9700 9701 memcpy(assoc_data->link[0].addr, sdata->vif.addr, ETH_ALEN); 9702 assoc_data->s1g = cbss->channel->band == NL80211_BAND_S1GHZ; 9703 9704 assoc_data->wmm = bss->wmm_used && 9705 (local->hw.queues >= IEEE80211_NUM_ACS); 9706 9707 if (cbss->channel->band == NL80211_BAND_6GHZ && 9708 req->flags & (ASSOC_REQ_DISABLE_HT | 9709 ASSOC_REQ_DISABLE_VHT | 9710 ASSOC_REQ_DISABLE_HE)) { 9711 err = -EINVAL; 9712 goto err_free; 9713 } 9714 9715 sband = local->hw.wiphy->bands[cbss->channel->band]; 9716 9717 assoc_data->link[0].bss = cbss; 9718 9719 if (match_auth) 9720 assoc_data->link[0].conn = sdata->deflink.u.mgd.conn; 9721 else 9722 assoc_data->link[0].conn = 9723 ieee80211_conn_settings_unlimited; 9724 ieee80211_determine_our_sta_mode_assoc(sdata, sband, req, 9725 assoc_data->wmm, 0, 9726 &assoc_data->link[0].conn); 9727 9728 uapsd_supported = bss->uapsd_supported; 9729 9730 err = ieee80211_mgd_get_ap_ht_vht_capa(sdata, assoc_data, 0); 9731 if (err) 9732 goto err_free; 9733 } 9734 9735 assoc_data->spp_amsdu = req->flags & ASSOC_REQ_SPP_AMSDU; 9736 9737 if (ifmgd->auth_data && !ifmgd->auth_data->done) { 9738 err = -EBUSY; 9739 goto err_free; 9740 } 9741 9742 if (ifmgd->assoc_data) { 9743 err = -EBUSY; 9744 goto err_free; 9745 } 9746 9747 /* Cleanup is delayed if auth_data matches */ 9748 if (ifmgd->auth_data && !match_auth) 9749 ieee80211_destroy_auth_data(sdata, false); 9750 9751 if (req->ie && req->ie_len) { 9752 memcpy(assoc_data->ie, req->ie, req->ie_len); 9753 assoc_data->ie_len = req->ie_len; 9754 assoc_data->ie_pos = assoc_data->ie + assoc_data->ie_len; 9755 } else { 9756 assoc_data->ie_pos = assoc_data->ie; 9757 } 9758 9759 if (req->fils_kek) { 9760 /* should already be checked in cfg80211 - so warn */ 9761 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) { 9762 err = -EINVAL; 9763 goto err_free; 9764 } 9765 memcpy(assoc_data->fils_kek, req->fils_kek, 9766 req->fils_kek_len); 9767 assoc_data->fils_kek_len = req->fils_kek_len; 9768 } 9769 9770 if (req->fils_nonces) 9771 memcpy(assoc_data->fils_nonces, req->fils_nonces, 9772 2 * FILS_NONCE_LEN); 9773 9774 /* default timeout */ 9775 assoc_data->timeout = jiffies; 9776 assoc_data->timeout_started = true; 9777 9778 assoc_data->assoc_link_id = assoc_link_id; 9779 9780 if (req->ap_mld_addr) { 9781 /* if there was no authentication, set up the link */ 9782 err = ieee80211_vif_set_links(sdata, BIT(assoc_link_id), 0); 9783 if (err) 9784 goto err_clear; 9785 } 9786 9787 link = sdata_dereference(sdata->link[assoc_link_id], sdata); 9788 if (WARN_ON(!link)) { 9789 err = -EINVAL; 9790 goto err_clear; 9791 } 9792 9793 override = link->u.mgd.conn.mode != 9794 assoc_data->link[assoc_link_id].conn.mode || 9795 link->u.mgd.conn.bw_limit != 9796 assoc_data->link[assoc_link_id].conn.bw_limit; 9797 link->u.mgd.conn = assoc_data->link[assoc_link_id].conn; 9798 9799 ieee80211_setup_assoc_link(sdata, assoc_data, req, &link->u.mgd.conn, 9800 assoc_link_id); 9801 9802 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && 9803 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK), 9804 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) 9805 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 9806 9807 if (assoc_data->wmm && uapsd_supported && 9808 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { 9809 assoc_data->uapsd = true; 9810 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; 9811 } else { 9812 assoc_data->uapsd = false; 9813 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; 9814 } 9815 9816 if (req->prev_bssid) 9817 memcpy(assoc_data->prev_ap_addr, req->prev_bssid, ETH_ALEN); 9818 9819 if (req->use_mfp) { 9820 ifmgd->mfp = IEEE80211_MFP_REQUIRED; 9821 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; 9822 } else { 9823 ifmgd->mfp = IEEE80211_MFP_DISABLED; 9824 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; 9825 } 9826 9827 if (req->flags & ASSOC_REQ_USE_RRM) 9828 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; 9829 else 9830 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; 9831 9832 if (req->crypto.control_port) 9833 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; 9834 else 9835 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; 9836 9837 sdata->control_port_protocol = req->crypto.control_port_ethertype; 9838 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; 9839 sdata->control_port_over_nl80211 = 9840 req->crypto.control_port_over_nl80211; 9841 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth; 9842 9843 /* kick off associate process */ 9844 ifmgd->assoc_data = assoc_data; 9845 9846 for (i = 0; i < ARRAY_SIZE(assoc_data->link); i++) { 9847 if (!assoc_data->link[i].bss) 9848 continue; 9849 if (i == assoc_data->assoc_link_id) 9850 continue; 9851 /* only calculate the mode, hence link == NULL */ 9852 err = ieee80211_prep_channel(sdata, NULL, i, 9853 assoc_data->link[i].bss, true, 9854 &assoc_data->link[i].conn, 9855 sdata->u.mgd.userspace_selectors); 9856 if (err) { 9857 req->links[i].error = err; 9858 goto err_clear; 9859 } 9860 } 9861 9862 memcpy(vif_cfg->ssid, assoc_data->ssid, assoc_data->ssid_len); 9863 vif_cfg->ssid_len = assoc_data->ssid_len; 9864 9865 /* needed for transmitting the assoc frames properly */ 9866 memcpy(sdata->vif.cfg.ap_addr, assoc_data->ap_addr, ETH_ALEN); 9867 9868 err = ieee80211_prep_connection(sdata, cbss, req->link_id, 9869 req->ap_mld_addr, true, 9870 &assoc_data->link[assoc_link_id].conn, 9871 override, 9872 sdata->u.mgd.userspace_selectors); 9873 if (err) 9874 goto err_clear; 9875 9876 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC)) { 9877 const struct cfg80211_bss_ies *beacon_ies; 9878 9879 rcu_read_lock(); 9880 beacon_ies = rcu_dereference(req->bss->beacon_ies); 9881 if (!beacon_ies) { 9882 /* 9883 * Wait up to one beacon interval ... 9884 * should this be more if we miss one? 9885 */ 9886 sdata_info(sdata, "waiting for beacon from %pM\n", 9887 link->u.mgd.bssid); 9888 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); 9889 assoc_data->timeout_started = true; 9890 assoc_data->need_beacon = true; 9891 } 9892 rcu_read_unlock(); 9893 } 9894 9895 run_again(sdata, assoc_data->timeout); 9896 9897 /* We are associating, clean up auth_data */ 9898 if (ifmgd->auth_data) 9899 ieee80211_destroy_auth_data(sdata, true); 9900 9901 return 0; 9902 err_clear: 9903 if (!ifmgd->auth_data) { 9904 eth_zero_addr(sdata->deflink.u.mgd.bssid); 9905 ieee80211_link_info_change_notify(sdata, &sdata->deflink, 9906 BSS_CHANGED_BSSID); 9907 } 9908 ifmgd->assoc_data = NULL; 9909 err_free: 9910 kfree(assoc_data); 9911 return err; 9912 } 9913 9914 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 9915 struct cfg80211_deauth_request *req) 9916 { 9917 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 9918 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 9919 bool tx = !req->local_state_change; 9920 struct ieee80211_prep_tx_info info = { 9921 .subtype = IEEE80211_STYPE_DEAUTH, 9922 }; 9923 9924 if (ifmgd->auth_data && 9925 ether_addr_equal(ifmgd->auth_data->ap_addr, req->bssid)) { 9926 sdata_info(sdata, 9927 "aborting authentication with %pM by local choice (Reason: %u=%s)\n", 9928 req->bssid, req->reason_code, 9929 ieee80211_get_reason_code_string(req->reason_code)); 9930 9931 info.link_id = ifmgd->auth_data->link_id; 9932 drv_mgd_prepare_tx(sdata->local, sdata, &info); 9933 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid, 9934 IEEE80211_STYPE_DEAUTH, 9935 req->reason_code, tx, 9936 frame_buf); 9937 ieee80211_destroy_auth_data(sdata, false); 9938 ieee80211_report_disconnect(sdata, frame_buf, 9939 sizeof(frame_buf), true, 9940 req->reason_code, false); 9941 drv_mgd_complete_tx(sdata->local, sdata, &info); 9942 return 0; 9943 } 9944 9945 if (ifmgd->assoc_data && 9946 ether_addr_equal(ifmgd->assoc_data->ap_addr, req->bssid)) { 9947 sdata_info(sdata, 9948 "aborting association with %pM by local choice (Reason: %u=%s)\n", 9949 req->bssid, req->reason_code, 9950 ieee80211_get_reason_code_string(req->reason_code)); 9951 9952 info.link_id = ifmgd->assoc_data->assoc_link_id; 9953 drv_mgd_prepare_tx(sdata->local, sdata, &info); 9954 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid, 9955 IEEE80211_STYPE_DEAUTH, 9956 req->reason_code, tx, 9957 frame_buf); 9958 ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON); 9959 ieee80211_report_disconnect(sdata, frame_buf, 9960 sizeof(frame_buf), true, 9961 req->reason_code, false); 9962 drv_mgd_complete_tx(sdata->local, sdata, &info); 9963 return 0; 9964 } 9965 9966 if (ifmgd->associated && 9967 ether_addr_equal(sdata->vif.cfg.ap_addr, req->bssid)) { 9968 sdata_info(sdata, 9969 "deauthenticating from %pM by local choice (Reason: %u=%s)\n", 9970 req->bssid, req->reason_code, 9971 ieee80211_get_reason_code_string(req->reason_code)); 9972 9973 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, 9974 req->reason_code, tx, frame_buf); 9975 ieee80211_report_disconnect(sdata, frame_buf, 9976 sizeof(frame_buf), true, 9977 req->reason_code, false); 9978 return 0; 9979 } 9980 9981 return -ENOTCONN; 9982 } 9983 9984 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 9985 struct cfg80211_disassoc_request *req) 9986 { 9987 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 9988 9989 if (!sdata->u.mgd.associated || 9990 memcmp(sdata->vif.cfg.ap_addr, req->ap_addr, ETH_ALEN)) 9991 return -ENOTCONN; 9992 9993 sdata_info(sdata, 9994 "disassociating from %pM by local choice (Reason: %u=%s)\n", 9995 req->ap_addr, req->reason_code, 9996 ieee80211_get_reason_code_string(req->reason_code)); 9997 9998 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, 9999 req->reason_code, !req->local_state_change, 10000 frame_buf); 10001 10002 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, 10003 req->reason_code, false); 10004 10005 return 0; 10006 } 10007 10008 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link) 10009 { 10010 wiphy_work_cancel(link->sdata->local->hw.wiphy, 10011 &link->u.mgd.request_smps_work); 10012 wiphy_work_cancel(link->sdata->local->hw.wiphy, 10013 &link->u.mgd.recalc_smps); 10014 wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy, 10015 &link->u.mgd.csa.switch_work); 10016 } 10017 10018 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) 10019 { 10020 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 10021 10022 /* 10023 * Make sure some work items will not run after this, 10024 * they will not do anything but might not have been 10025 * cancelled when disconnecting. 10026 */ 10027 wiphy_work_cancel(sdata->local->hw.wiphy, 10028 &ifmgd->monitor_work); 10029 wiphy_work_cancel(sdata->local->hw.wiphy, 10030 &ifmgd->beacon_connection_loss_work); 10031 wiphy_work_cancel(sdata->local->hw.wiphy, 10032 &ifmgd->csa_connection_drop_work); 10033 wiphy_delayed_work_cancel(sdata->local->hw.wiphy, 10034 &ifmgd->tdls_peer_del_work); 10035 10036 if (ifmgd->assoc_data) 10037 ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT); 10038 if (ifmgd->auth_data) 10039 ieee80211_destroy_auth_data(sdata, false); 10040 spin_lock_bh(&ifmgd->teardown_lock); 10041 if (ifmgd->teardown_skb) { 10042 kfree_skb(ifmgd->teardown_skb); 10043 ifmgd->teardown_skb = NULL; 10044 ifmgd->orig_teardown_skb = NULL; 10045 } 10046 kfree(ifmgd->assoc_req_ies); 10047 ifmgd->assoc_req_ies = NULL; 10048 ifmgd->assoc_req_ies_len = 0; 10049 spin_unlock_bh(&ifmgd->teardown_lock); 10050 timer_delete_sync(&ifmgd->timer); 10051 } 10052 10053 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 10054 enum nl80211_cqm_rssi_threshold_event rssi_event, 10055 s32 rssi_level, 10056 gfp_t gfp) 10057 { 10058 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 10059 10060 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level); 10061 10062 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp); 10063 } 10064 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); 10065 10066 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) 10067 { 10068 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 10069 10070 trace_api_cqm_beacon_loss_notify(sdata->local, sdata); 10071 10072 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); 10073 } 10074 EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); 10075 10076 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, 10077 int rssi_min_thold, 10078 int rssi_max_thold) 10079 { 10080 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); 10081 10082 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 10083 return; 10084 10085 /* 10086 * Scale up threshold values before storing it, as the RSSI averaging 10087 * algorithm uses a scaled up value as well. Change this scaling 10088 * factor if the RSSI averaging algorithm changes. 10089 */ 10090 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; 10091 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; 10092 } 10093 10094 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 10095 int rssi_min_thold, 10096 int rssi_max_thold) 10097 { 10098 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 10099 10100 WARN_ON(rssi_min_thold == rssi_max_thold || 10101 rssi_min_thold > rssi_max_thold); 10102 10103 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, 10104 rssi_max_thold); 10105 } 10106 EXPORT_SYMBOL(ieee80211_enable_rssi_reports); 10107 10108 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) 10109 { 10110 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 10111 10112 _ieee80211_enable_rssi_reports(sdata, 0, 0); 10113 } 10114 EXPORT_SYMBOL(ieee80211_disable_rssi_reports); 10115 10116 void ieee80211_process_ml_reconf_resp(struct ieee80211_sub_if_data *sdata, 10117 struct ieee80211_mgmt *mgmt, size_t len) 10118 { 10119 struct ieee80211_local *local = sdata->local; 10120 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 10121 struct ieee80211_mgd_assoc_data *add_links_data = 10122 ifmgd->reconf.add_links_data; 10123 struct sta_info *sta; 10124 struct cfg80211_mlo_reconf_done_data done_data = {}; 10125 u16 sta_changed_links = sdata->u.mgd.reconf.added_links | 10126 sdata->u.mgd.reconf.removed_links; 10127 u16 link_mask, valid_links; 10128 unsigned int link_id; 10129 size_t orig_len = len; 10130 u8 i, group_key_data_len; 10131 u8 *pos; 10132 10133 if (!ieee80211_vif_is_mld(&sdata->vif) || 10134 len < offsetofend(typeof(*mgmt), u.action.u.ml_reconf_resp) || 10135 mgmt->u.action.u.ml_reconf_resp.dialog_token != 10136 sdata->u.mgd.reconf.dialog_token || 10137 !sta_changed_links) 10138 return; 10139 10140 pos = mgmt->u.action.u.ml_reconf_resp.variable; 10141 len -= offsetofend(typeof(*mgmt), u.action.u.ml_reconf_resp); 10142 10143 /* each status duple is 3 octets */ 10144 if (len < mgmt->u.action.u.ml_reconf_resp.count * 3) { 10145 sdata_info(sdata, 10146 "mlo: reconf: unexpected len=%zu, count=%u\n", 10147 len, mgmt->u.action.u.ml_reconf_resp.count); 10148 goto disconnect; 10149 } 10150 10151 link_mask = sta_changed_links; 10152 for (i = 0; i < mgmt->u.action.u.ml_reconf_resp.count; i++) { 10153 u16 status = get_unaligned_le16(pos + 1); 10154 10155 link_id = *pos; 10156 10157 if (!(link_mask & BIT(link_id))) { 10158 sdata_info(sdata, 10159 "mlo: reconf: unexpected link: %u, changed=0x%x\n", 10160 link_id, sta_changed_links); 10161 goto disconnect; 10162 } 10163 10164 /* clear the corresponding link, to detect the case that 10165 * the same link was included more than one time 10166 */ 10167 link_mask &= ~BIT(link_id); 10168 10169 /* Handle failure to remove links here. Failure to remove added 10170 * links will be done later in the flow. 10171 */ 10172 if (status != WLAN_STATUS_SUCCESS) { 10173 sdata_info(sdata, 10174 "mlo: reconf: failed on link=%u, status=%u\n", 10175 link_id, status); 10176 10177 /* The AP MLD failed to remove a link that was already 10178 * removed locally. As this is not expected behavior, 10179 * disconnect 10180 */ 10181 if (sdata->u.mgd.reconf.removed_links & BIT(link_id)) 10182 goto disconnect; 10183 10184 /* The AP MLD failed to add a link. Remove it from the 10185 * added links. 10186 */ 10187 sdata->u.mgd.reconf.added_links &= ~BIT(link_id); 10188 } 10189 10190 pos += 3; 10191 len -= 3; 10192 } 10193 10194 if (link_mask) { 10195 sdata_info(sdata, 10196 "mlo: reconf: no response for links=0x%x\n", 10197 link_mask); 10198 goto disconnect; 10199 } 10200 10201 if (!sdata->u.mgd.reconf.added_links) 10202 goto out; 10203 10204 if (len < 1 || len < 1 + *pos) { 10205 sdata_info(sdata, 10206 "mlo: reconf: invalid group key data length"); 10207 goto disconnect; 10208 } 10209 10210 /* The Group Key Data field must be present when links are added. This 10211 * field should be processed by userland. 10212 */ 10213 group_key_data_len = *pos++; 10214 10215 pos += group_key_data_len; 10216 len -= group_key_data_len + 1; 10217 10218 /* Process the information for the added links */ 10219 sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 10220 if (WARN_ON(!sta)) 10221 goto disconnect; 10222 10223 valid_links = sdata->vif.valid_links; 10224 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10225 if (!add_links_data->link[link_id].bss || 10226 !(sdata->u.mgd.reconf.added_links & BIT(link_id))) 10227 continue; 10228 10229 valid_links |= BIT(link_id); 10230 if (ieee80211_sta_allocate_link(sta, link_id)) 10231 goto disconnect; 10232 } 10233 10234 ieee80211_vif_set_links(sdata, valid_links, sdata->vif.dormant_links); 10235 link_mask = 0; 10236 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10237 struct cfg80211_bss *cbss = add_links_data->link[link_id].bss; 10238 struct ieee80211_link_data *link; 10239 struct link_sta_info *link_sta; 10240 u64 changed = 0; 10241 10242 if (!cbss) 10243 continue; 10244 10245 link = sdata_dereference(sdata->link[link_id], sdata); 10246 if (WARN_ON(!link)) 10247 goto disconnect; 10248 10249 link_info(link, 10250 "mlo: reconf: local address %pM, AP link address %pM\n", 10251 add_links_data->link[link_id].addr, 10252 add_links_data->link[link_id].bss->bssid); 10253 10254 link_sta = rcu_dereference_protected(sta->link[link_id], 10255 lockdep_is_held(&local->hw.wiphy->mtx)); 10256 if (WARN_ON(!link_sta)) 10257 goto disconnect; 10258 10259 if (!link->u.mgd.have_beacon) { 10260 const struct cfg80211_bss_ies *ies; 10261 10262 rcu_read_lock(); 10263 ies = rcu_dereference(cbss->beacon_ies); 10264 if (ies) 10265 link->u.mgd.have_beacon = true; 10266 else 10267 ies = rcu_dereference(cbss->ies); 10268 ieee80211_get_dtim(ies, 10269 &link->conf->sync_dtim_count, 10270 &link->u.mgd.dtim_period); 10271 link->conf->beacon_int = cbss->beacon_interval; 10272 rcu_read_unlock(); 10273 } 10274 10275 link->conf->dtim_period = link->u.mgd.dtim_period ?: 1; 10276 10277 link->u.mgd.conn = add_links_data->link[link_id].conn; 10278 if (ieee80211_prep_channel(sdata, link, link_id, cbss, 10279 true, &link->u.mgd.conn, 10280 sdata->u.mgd.userspace_selectors)) { 10281 link_info(link, "mlo: reconf: prep_channel failed\n"); 10282 goto disconnect; 10283 } 10284 10285 if (ieee80211_mgd_setup_link_sta(link, sta, link_sta, 10286 add_links_data->link[link_id].bss)) 10287 goto disconnect; 10288 10289 if (!ieee80211_assoc_config_link(link, link_sta, 10290 add_links_data->link[link_id].bss, 10291 mgmt, pos, len, 10292 &changed)) 10293 goto disconnect; 10294 10295 /* The AP MLD indicated success for this link, but the station 10296 * profile status indicated otherwise. Since there is an 10297 * inconsistency in the ML reconfiguration response, disconnect 10298 */ 10299 if (add_links_data->link[link_id].status != WLAN_STATUS_SUCCESS) 10300 goto disconnect; 10301 10302 ieee80211_sta_init_nss(link_sta); 10303 if (ieee80211_sta_activate_link(sta, link_id)) 10304 goto disconnect; 10305 10306 changed |= ieee80211_link_set_associated(link, cbss); 10307 ieee80211_link_info_change_notify(sdata, link, changed); 10308 10309 ieee80211_recalc_smps(sdata, link); 10310 link_mask |= BIT(link_id); 10311 } 10312 10313 sdata_info(sdata, 10314 "mlo: reconf: current valid_links=0x%x, added=0x%x\n", 10315 valid_links, link_mask); 10316 10317 /* links might have changed due to rejected ones, set them again */ 10318 ieee80211_vif_set_links(sdata, valid_links, sdata->vif.dormant_links); 10319 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_VALID_LINKS); 10320 10321 ieee80211_recalc_ps(local); 10322 ieee80211_recalc_ps_vif(sdata); 10323 10324 done_data.buf = (const u8 *)mgmt; 10325 done_data.len = orig_len; 10326 done_data.added_links = link_mask; 10327 10328 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10329 done_data.links[link_id].bss = add_links_data->link[link_id].bss; 10330 done_data.links[link_id].addr = 10331 add_links_data->link[link_id].addr; 10332 } 10333 10334 cfg80211_mlo_reconf_add_done(sdata->dev, &done_data); 10335 kfree(sdata->u.mgd.reconf.add_links_data); 10336 sdata->u.mgd.reconf.add_links_data = NULL; 10337 out: 10338 ieee80211_ml_reconf_reset(sdata); 10339 return; 10340 10341 disconnect: 10342 __ieee80211_disconnect(sdata); 10343 } 10344 10345 static struct sk_buff * 10346 ieee80211_build_ml_reconf_req(struct ieee80211_sub_if_data *sdata, 10347 struct ieee80211_mgd_assoc_data *add_links_data, 10348 u16 removed_links, __le16 ext_mld_capa_ops) 10349 { 10350 struct ieee80211_local *local = sdata->local; 10351 struct ieee80211_mgmt *mgmt; 10352 struct ieee80211_multi_link_elem *ml_elem; 10353 struct ieee80211_mle_basic_common_info *common; 10354 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 10355 struct sk_buff *skb; 10356 size_t size; 10357 unsigned int link_id; 10358 __le16 eml_capa = 0, mld_capa_ops = 0; 10359 struct ieee80211_tx_info *info; 10360 u8 common_size, var_common_size; 10361 u8 *ml_elem_len; 10362 u16 capab = 0; 10363 10364 size = local->hw.extra_tx_headroom + sizeof(*mgmt); 10365 10366 /* Consider the maximal length of the reconfiguration ML element */ 10367 size += sizeof(struct ieee80211_multi_link_elem); 10368 10369 /* The Basic ML element and the Reconfiguration ML element have the same 10370 * fixed common information fields in the context of ML reconfiguration 10371 * action frame. The AP MLD MAC address must always be present 10372 */ 10373 common_size = sizeof(*common); 10374 10375 /* when adding links, the MLD capabilities must be present */ 10376 var_common_size = 0; 10377 if (add_links_data) { 10378 const struct wiphy_iftype_ext_capab *ift_ext_capa = 10379 cfg80211_get_iftype_ext_capa(local->hw.wiphy, 10380 ieee80211_vif_type_p2p(&sdata->vif)); 10381 10382 if (ift_ext_capa) { 10383 eml_capa = cpu_to_le16(ift_ext_capa->eml_capabilities); 10384 mld_capa_ops = 10385 cpu_to_le16(ift_ext_capa->mld_capa_and_ops); 10386 } 10387 10388 /* MLD capabilities and operation */ 10389 var_common_size += 2; 10390 10391 /* EML capabilities */ 10392 if (eml_capa & cpu_to_le16((IEEE80211_EML_CAP_EMLSR_SUPP | 10393 IEEE80211_EML_CAP_EMLMR_SUPPORT))) 10394 var_common_size += 2; 10395 } 10396 10397 if (ext_mld_capa_ops) 10398 var_common_size += 2; 10399 10400 /* Add the common information length */ 10401 size += common_size + var_common_size; 10402 10403 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10404 struct cfg80211_bss *cbss; 10405 size_t elems_len; 10406 10407 if (removed_links & BIT(link_id)) { 10408 size += sizeof(struct ieee80211_mle_per_sta_profile) + 10409 ETH_ALEN; 10410 continue; 10411 } 10412 10413 if (!add_links_data || !add_links_data->link[link_id].bss) 10414 continue; 10415 10416 elems_len = add_links_data->link[link_id].elems_len; 10417 cbss = add_links_data->link[link_id].bss; 10418 10419 /* should be the same across all BSSes */ 10420 if (cbss->capability & WLAN_CAPABILITY_PRIVACY) 10421 capab |= WLAN_CAPABILITY_PRIVACY; 10422 10423 size += 2 + sizeof(struct ieee80211_mle_per_sta_profile) + 10424 ETH_ALEN; 10425 10426 /* WMM */ 10427 size += 9; 10428 size += ieee80211_link_common_elems_size(sdata, iftype, cbss, 10429 elems_len); 10430 } 10431 10432 skb = alloc_skb(size, GFP_KERNEL); 10433 if (!skb) 10434 return NULL; 10435 10436 skb_reserve(skb, local->hw.extra_tx_headroom); 10437 mgmt = skb_put_zero(skb, offsetofend(struct ieee80211_mgmt, 10438 u.action.u.ml_reconf_req)); 10439 10440 /* Add the MAC header */ 10441 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 10442 IEEE80211_STYPE_ACTION); 10443 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 10444 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 10445 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 10446 10447 /* Add the action frame fixed fields */ 10448 mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT; 10449 mgmt->u.action.u.ml_reconf_req.action_code = 10450 WLAN_PROTECTED_EHT_ACTION_LINK_RECONFIG_REQ; 10451 10452 /* allocate a dialog token and store it */ 10453 sdata->u.mgd.reconf.dialog_token = ++sdata->u.mgd.dialog_token_alloc; 10454 mgmt->u.action.u.ml_reconf_req.dialog_token = 10455 sdata->u.mgd.reconf.dialog_token; 10456 10457 /* Add the ML reconfiguration element and the common information */ 10458 skb_put_u8(skb, WLAN_EID_EXTENSION); 10459 ml_elem_len = skb_put(skb, 1); 10460 skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK); 10461 ml_elem = skb_put(skb, sizeof(*ml_elem)); 10462 ml_elem->control = 10463 cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_RECONF | 10464 IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR); 10465 common = skb_put(skb, common_size); 10466 common->len = common_size + var_common_size; 10467 memcpy(common->mld_mac_addr, sdata->vif.addr, ETH_ALEN); 10468 10469 if (add_links_data) { 10470 if (eml_capa & 10471 cpu_to_le16((IEEE80211_EML_CAP_EMLSR_SUPP | 10472 IEEE80211_EML_CAP_EMLMR_SUPPORT))) { 10473 ml_elem->control |= 10474 cpu_to_le16(IEEE80211_MLC_RECONF_PRES_EML_CAPA); 10475 skb_put_data(skb, &eml_capa, sizeof(eml_capa)); 10476 } 10477 10478 ml_elem->control |= 10479 cpu_to_le16(IEEE80211_MLC_RECONF_PRES_MLD_CAPA_OP); 10480 10481 skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops)); 10482 } 10483 10484 if (ext_mld_capa_ops) { 10485 ml_elem->control |= 10486 cpu_to_le16(IEEE80211_MLC_RECONF_PRES_EXT_MLD_CAPA_OP); 10487 skb_put_data(skb, &ext_mld_capa_ops, sizeof(ext_mld_capa_ops)); 10488 } 10489 10490 if (sdata->u.mgd.flags & IEEE80211_STA_ENABLE_RRM) 10491 capab |= WLAN_CAPABILITY_RADIO_MEASURE; 10492 10493 /* Add the per station profile */ 10494 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10495 u8 *subelem_len = NULL; 10496 u16 ctrl; 10497 const u8 *addr; 10498 10499 /* Skip links that are not changing */ 10500 if (!(removed_links & BIT(link_id)) && 10501 (!add_links_data || !add_links_data->link[link_id].bss)) 10502 continue; 10503 10504 ctrl = link_id | 10505 IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT; 10506 10507 if (removed_links & BIT(link_id)) { 10508 struct ieee80211_bss_conf *conf = 10509 sdata_dereference(sdata->vif.link_conf[link_id], 10510 sdata); 10511 if (!conf) 10512 continue; 10513 10514 addr = conf->addr; 10515 ctrl |= u16_encode_bits(IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_DEL_LINK, 10516 IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE); 10517 } else { 10518 addr = add_links_data->link[link_id].addr; 10519 ctrl |= IEEE80211_MLE_STA_RECONF_CONTROL_COMPLETE_PROFILE | 10520 u16_encode_bits(IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_ADD_LINK, 10521 IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE); 10522 } 10523 10524 skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE); 10525 subelem_len = skb_put(skb, 1); 10526 10527 put_unaligned_le16(ctrl, skb_put(skb, sizeof(ctrl))); 10528 skb_put_u8(skb, 1 + ETH_ALEN); 10529 skb_put_data(skb, addr, ETH_ALEN); 10530 10531 if (!(removed_links & BIT(link_id))) { 10532 u16 link_present_elems[PRESENT_ELEMS_MAX] = {}; 10533 size_t extra_used; 10534 void *capab_pos; 10535 u8 qos_info; 10536 10537 capab_pos = skb_put(skb, 2); 10538 10539 extra_used = 10540 ieee80211_add_link_elems(sdata, skb, &capab, NULL, 10541 add_links_data->link[link_id].elems, 10542 add_links_data->link[link_id].elems_len, 10543 link_id, NULL, 10544 link_present_elems, 10545 add_links_data); 10546 10547 if (add_links_data->link[link_id].elems) 10548 skb_put_data(skb, 10549 add_links_data->link[link_id].elems + 10550 extra_used, 10551 add_links_data->link[link_id].elems_len - 10552 extra_used); 10553 if (sdata->u.mgd.flags & IEEE80211_STA_UAPSD_ENABLED) { 10554 qos_info = sdata->u.mgd.uapsd_queues; 10555 qos_info |= (sdata->u.mgd.uapsd_max_sp_len << 10556 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); 10557 } else { 10558 qos_info = 0; 10559 } 10560 10561 ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); 10562 put_unaligned_le16(capab, capab_pos); 10563 } 10564 10565 ieee80211_fragment_element(skb, subelem_len, 10566 IEEE80211_MLE_SUBELEM_FRAGMENT); 10567 } 10568 10569 ieee80211_fragment_element(skb, ml_elem_len, WLAN_EID_FRAGMENT); 10570 10571 info = IEEE80211_SKB_CB(skb); 10572 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 10573 10574 return skb; 10575 } 10576 10577 int ieee80211_mgd_assoc_ml_reconf(struct ieee80211_sub_if_data *sdata, 10578 struct cfg80211_ml_reconf_req *req) 10579 { 10580 struct ieee80211_local *local = sdata->local; 10581 struct ieee80211_mgd_assoc_data *data = NULL; 10582 struct sta_info *sta; 10583 struct sk_buff *skb; 10584 u16 added_links, new_valid_links; 10585 int link_id, err; 10586 10587 if (!ieee80211_vif_is_mld(&sdata->vif) || 10588 !(sdata->vif.cfg.mld_capa_op & 10589 IEEE80211_MLD_CAP_OP_LINK_RECONF_SUPPORT)) 10590 return -EINVAL; 10591 10592 /* No support for concurrent ML reconfiguration operation */ 10593 if (sdata->u.mgd.reconf.added_links || 10594 sdata->u.mgd.reconf.removed_links) 10595 return -EBUSY; 10596 10597 added_links = 0; 10598 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { 10599 if (!req->add_links[link_id].bss) 10600 continue; 10601 10602 added_links |= BIT(link_id); 10603 } 10604 10605 sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr); 10606 if (WARN_ON(!sta)) 10607 return -ENOLINK; 10608 10609 /* Adding links to the set of valid link is done only after a successful 10610 * ML reconfiguration frame exchange. Here prepare the data for the ML 10611 * reconfiguration frame construction and allocate the required 10612 * resources 10613 */ 10614 if (added_links) { 10615 bool uapsd_supported; 10616 10617 data = kzalloc(sizeof(*data), GFP_KERNEL); 10618 if (!data) 10619 return -ENOMEM; 10620 10621 data->assoc_link_id = -1; 10622 data->wmm = true; 10623 10624 uapsd_supported = true; 10625 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 10626 link_id++) { 10627 struct ieee80211_supported_band *sband; 10628 struct cfg80211_bss *link_cbss = 10629 req->add_links[link_id].bss; 10630 struct ieee80211_bss *bss; 10631 10632 if (!link_cbss) 10633 continue; 10634 10635 bss = (void *)link_cbss->priv; 10636 10637 if (!bss->wmm_used) { 10638 err = -EINVAL; 10639 goto err_free; 10640 } 10641 10642 if (link_cbss->channel->band == NL80211_BAND_S1GHZ) { 10643 err = -EINVAL; 10644 goto err_free; 10645 } 10646 10647 eth_random_addr(data->link[link_id].addr); 10648 data->link[link_id].conn = 10649 ieee80211_conn_settings_unlimited; 10650 sband = 10651 local->hw.wiphy->bands[link_cbss->channel->band]; 10652 10653 ieee80211_determine_our_sta_mode(sdata, sband, 10654 NULL, true, link_id, 10655 &data->link[link_id].conn); 10656 10657 data->link[link_id].bss = link_cbss; 10658 data->link[link_id].disabled = 10659 req->add_links[link_id].disabled; 10660 data->link[link_id].elems = 10661 (u8 *)req->add_links[link_id].elems; 10662 data->link[link_id].elems_len = 10663 req->add_links[link_id].elems_len; 10664 10665 if (!bss->uapsd_supported) 10666 uapsd_supported = false; 10667 10668 if (data->link[link_id].conn.mode < 10669 IEEE80211_CONN_MODE_EHT) { 10670 err = -EINVAL; 10671 goto err_free; 10672 } 10673 10674 err = ieee80211_mgd_get_ap_ht_vht_capa(sdata, data, 10675 link_id); 10676 if (err) { 10677 err = -EINVAL; 10678 goto err_free; 10679 } 10680 } 10681 10682 /* Require U-APSD support if we enabled it */ 10683 if (sdata->u.mgd.flags & IEEE80211_STA_UAPSD_ENABLED && 10684 !uapsd_supported) { 10685 err = -EINVAL; 10686 sdata_info(sdata, "U-APSD on but not available on (all) new links\n"); 10687 goto err_free; 10688 } 10689 10690 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 10691 link_id++) { 10692 if (!data->link[link_id].bss) 10693 continue; 10694 10695 /* only used to verify the mode, nothing is allocated */ 10696 err = ieee80211_prep_channel(sdata, NULL, link_id, 10697 data->link[link_id].bss, 10698 true, 10699 &data->link[link_id].conn, 10700 sdata->u.mgd.userspace_selectors); 10701 if (err) 10702 goto err_free; 10703 } 10704 } 10705 10706 /* link removal is done before the ML reconfiguration frame exchange so 10707 * that these links will not be used between their removal by the AP MLD 10708 * and before the station got the ML reconfiguration response. Based on 10709 * Section 35.3.6.4 in Draft P802.11be_D7.0 the AP MLD should accept the 10710 * link removal request. 10711 */ 10712 if (req->rem_links) { 10713 u16 new_active_links = 10714 sdata->vif.active_links & ~req->rem_links; 10715 10716 new_valid_links = sdata->vif.valid_links & ~req->rem_links; 10717 10718 /* Should not be left with no valid links to perform the 10719 * ML reconfiguration 10720 */ 10721 if (!new_valid_links || 10722 !(new_valid_links & ~sdata->vif.dormant_links)) { 10723 sdata_info(sdata, "mlo: reconf: no valid links\n"); 10724 err = -EINVAL; 10725 goto err_free; 10726 } 10727 10728 if (new_active_links != sdata->vif.active_links) { 10729 if (!new_active_links) 10730 new_active_links = 10731 BIT(__ffs(new_valid_links & 10732 ~sdata->vif.dormant_links)); 10733 10734 err = ieee80211_set_active_links(&sdata->vif, 10735 new_active_links); 10736 if (err) { 10737 sdata_info(sdata, 10738 "mlo: reconf: failed set active links\n"); 10739 goto err_free; 10740 } 10741 } 10742 } 10743 10744 /* Build the SKB before the link removal as the construction of the 10745 * station info for removed links requires the local address. 10746 * Invalidate the removed links, so that the transmission of the ML 10747 * reconfiguration request frame would not be done using them, as the AP 10748 * is expected to send the ML reconfiguration response frame on the link 10749 * on which the request was received. 10750 */ 10751 skb = ieee80211_build_ml_reconf_req(sdata, data, req->rem_links, 10752 cpu_to_le16(req->ext_mld_capa_ops)); 10753 if (!skb) { 10754 err = -ENOMEM; 10755 goto err_free; 10756 } 10757 10758 if (req->rem_links) { 10759 u16 new_dormant_links = 10760 sdata->vif.dormant_links & ~req->rem_links; 10761 10762 err = ieee80211_vif_set_links(sdata, new_valid_links, 10763 new_dormant_links); 10764 if (err) { 10765 sdata_info(sdata, 10766 "mlo: reconf: failed set valid links\n"); 10767 kfree_skb(skb); 10768 goto err_free; 10769 } 10770 10771 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 10772 link_id++) { 10773 if (!(req->rem_links & BIT(link_id))) 10774 continue; 10775 10776 ieee80211_sta_remove_link(sta, link_id); 10777 } 10778 10779 /* notify the driver and upper layers */ 10780 ieee80211_vif_cfg_change_notify(sdata, 10781 BSS_CHANGED_MLD_VALID_LINKS); 10782 cfg80211_links_removed(sdata->dev, req->rem_links); 10783 } 10784 10785 sdata_info(sdata, "mlo: reconf: adding=0x%x, removed=0x%x\n", 10786 added_links, req->rem_links); 10787 10788 ieee80211_tx_skb(sdata, skb); 10789 10790 sdata->u.mgd.reconf.added_links = added_links; 10791 sdata->u.mgd.reconf.add_links_data = data; 10792 sdata->u.mgd.reconf.removed_links = req->rem_links; 10793 wiphy_delayed_work_queue(sdata->local->hw.wiphy, 10794 &sdata->u.mgd.reconf.wk, 10795 IEEE80211_ASSOC_TIMEOUT_SHORT); 10796 return 0; 10797 10798 err_free: 10799 kfree(data); 10800 return err; 10801 } 10802 10803 static bool ieee80211_mgd_epcs_supp(struct ieee80211_sub_if_data *sdata) 10804 { 10805 unsigned long valid_links = sdata->vif.valid_links; 10806 u8 link_id; 10807 10808 lockdep_assert_wiphy(sdata->local->hw.wiphy); 10809 10810 if (!ieee80211_vif_is_mld(&sdata->vif)) 10811 return false; 10812 10813 for_each_set_bit(link_id, &valid_links, IEEE80211_MLD_MAX_NUM_LINKS) { 10814 struct ieee80211_bss_conf *bss_conf = 10815 sdata_dereference(sdata->vif.link_conf[link_id], sdata); 10816 10817 if (WARN_ON(!bss_conf) || !bss_conf->epcs_support) 10818 return false; 10819 } 10820 10821 return true; 10822 } 10823 10824 int ieee80211_mgd_set_epcs(struct ieee80211_sub_if_data *sdata, bool enable) 10825 { 10826 struct ieee80211_local *local = sdata->local; 10827 struct ieee80211_mgmt *mgmt; 10828 struct sk_buff *skb; 10829 int frame_len = offsetofend(struct ieee80211_mgmt, 10830 u.action.u.epcs) + (enable ? 1 : 0); 10831 10832 if (!ieee80211_mgd_epcs_supp(sdata)) 10833 return -EINVAL; 10834 10835 if (sdata->u.mgd.epcs.enabled == enable && 10836 !sdata->u.mgd.epcs.dialog_token) 10837 return 0; 10838 10839 /* Do not allow enabling EPCS if the AP didn't respond yet. 10840 * However, allow disabling EPCS in such a case. 10841 */ 10842 if (sdata->u.mgd.epcs.dialog_token && enable) 10843 return -EALREADY; 10844 10845 skb = dev_alloc_skb(local->hw.extra_tx_headroom + frame_len); 10846 if (!skb) 10847 return -ENOBUFS; 10848 10849 skb_reserve(skb, local->hw.extra_tx_headroom); 10850 mgmt = skb_put_zero(skb, frame_len); 10851 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 10852 IEEE80211_STYPE_ACTION); 10853 memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN); 10854 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 10855 memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN); 10856 10857 mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT; 10858 if (enable) { 10859 u8 *pos = mgmt->u.action.u.epcs.variable; 10860 10861 mgmt->u.action.u.epcs.action_code = 10862 WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_REQ; 10863 10864 *pos = ++sdata->u.mgd.dialog_token_alloc; 10865 sdata->u.mgd.epcs.dialog_token = *pos; 10866 } else { 10867 mgmt->u.action.u.epcs.action_code = 10868 WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_TEARDOWN; 10869 10870 ieee80211_epcs_teardown(sdata); 10871 ieee80211_epcs_changed(sdata, false); 10872 } 10873 10874 ieee80211_tx_skb(sdata, skb); 10875 return 0; 10876 } 10877 10878 static void ieee80211_ml_epcs(struct ieee80211_sub_if_data *sdata, 10879 struct ieee802_11_elems *elems) 10880 { 10881 const struct element *sub; 10882 size_t scratch_len = elems->ml_epcs_len; 10883 u8 *scratch __free(kfree) = kzalloc(scratch_len, GFP_KERNEL); 10884 10885 lockdep_assert_wiphy(sdata->local->hw.wiphy); 10886 10887 if (!ieee80211_vif_is_mld(&sdata->vif) || !elems->ml_epcs) 10888 return; 10889 10890 if (WARN_ON(!scratch)) 10891 return; 10892 10893 /* Directly parse the sub elements as the common information doesn't 10894 * hold any useful information. 10895 */ 10896 for_each_mle_subelement(sub, (const u8 *)elems->ml_epcs, 10897 elems->ml_epcs_len) { 10898 struct ieee802_11_elems *link_elems __free(kfree) = NULL; 10899 struct ieee80211_link_data *link; 10900 u8 *pos = (void *)sub->data; 10901 u16 control; 10902 ssize_t len; 10903 u8 link_id; 10904 10905 if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE) 10906 continue; 10907 10908 if (sub->datalen < sizeof(control)) 10909 break; 10910 10911 control = get_unaligned_le16(pos); 10912 link_id = control & IEEE80211_MLE_STA_EPCS_CONTROL_LINK_ID; 10913 10914 link = sdata_dereference(sdata->link[link_id], sdata); 10915 if (!link) 10916 continue; 10917 10918 len = cfg80211_defragment_element(sub, (u8 *)elems->ml_epcs, 10919 elems->ml_epcs_len, 10920 scratch, scratch_len, 10921 IEEE80211_MLE_SUBELEM_FRAGMENT); 10922 if (len < (ssize_t)sizeof(control)) 10923 continue; 10924 10925 pos = scratch + sizeof(control); 10926 len -= sizeof(control); 10927 10928 link_elems = ieee802_11_parse_elems(pos, len, false, NULL); 10929 if (!link_elems) 10930 continue; 10931 10932 if (ieee80211_sta_wmm_params(sdata->local, link, 10933 link_elems->wmm_param, 10934 link_elems->wmm_param_len, 10935 link_elems->mu_edca_param_set)) 10936 ieee80211_link_info_change_notify(sdata, link, 10937 BSS_CHANGED_QOS); 10938 } 10939 } 10940 10941 void ieee80211_process_epcs_ena_resp(struct ieee80211_sub_if_data *sdata, 10942 struct ieee80211_mgmt *mgmt, size_t len) 10943 { 10944 struct ieee802_11_elems *elems __free(kfree) = NULL; 10945 size_t ies_len; 10946 u16 status_code; 10947 u8 *pos, dialog_token; 10948 10949 if (!ieee80211_mgd_epcs_supp(sdata)) 10950 return; 10951 10952 /* Handle dialog token and status code */ 10953 pos = mgmt->u.action.u.epcs.variable; 10954 dialog_token = *pos; 10955 status_code = get_unaligned_le16(pos + 1); 10956 10957 /* An EPCS enable response with dialog token == 0 is an unsolicited 10958 * notification from the AP MLD. In such a case, EPCS should already be 10959 * enabled and status must be success 10960 */ 10961 if (!dialog_token && 10962 (!sdata->u.mgd.epcs.enabled || 10963 status_code != WLAN_STATUS_SUCCESS)) 10964 return; 10965 10966 if (sdata->u.mgd.epcs.dialog_token != dialog_token) 10967 return; 10968 10969 sdata->u.mgd.epcs.dialog_token = 0; 10970 10971 if (status_code != WLAN_STATUS_SUCCESS) 10972 return; 10973 10974 pos += IEEE80211_EPCS_ENA_RESP_BODY_LEN; 10975 ies_len = len - offsetof(struct ieee80211_mgmt, 10976 u.action.u.epcs.variable) - 10977 IEEE80211_EPCS_ENA_RESP_BODY_LEN; 10978 10979 elems = ieee802_11_parse_elems(pos, ies_len, true, NULL); 10980 if (!elems) 10981 return; 10982 10983 ieee80211_ml_epcs(sdata, elems); 10984 ieee80211_epcs_changed(sdata, true); 10985 } 10986 10987 void ieee80211_process_epcs_teardown(struct ieee80211_sub_if_data *sdata, 10988 struct ieee80211_mgmt *mgmt, size_t len) 10989 { 10990 if (!ieee80211_vif_is_mld(&sdata->vif) || 10991 !sdata->u.mgd.epcs.enabled) 10992 return; 10993 10994 ieee80211_epcs_teardown(sdata); 10995 ieee80211_epcs_changed(sdata, false); 10996 } 10997