1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005-2006, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2014 Intel Mobile Communications GmbH 8 * Copyright (C) 2015-2017 Intel Deutschland GmbH 9 * Copyright (C) 2018-2023 Intel Corporation 10 * 11 * utilities for mac80211 12 */ 13 14 #include <net/mac80211.h> 15 #include <linux/netdevice.h> 16 #include <linux/export.h> 17 #include <linux/types.h> 18 #include <linux/slab.h> 19 #include <linux/skbuff.h> 20 #include <linux/etherdevice.h> 21 #include <linux/if_arp.h> 22 #include <linux/bitmap.h> 23 #include <linux/crc32.h> 24 #include <net/net_namespace.h> 25 #include <net/cfg80211.h> 26 #include <net/rtnetlink.h> 27 #include <kunit/visibility.h> 28 29 #include "ieee80211_i.h" 30 #include "driver-ops.h" 31 #include "rate.h" 32 #include "mesh.h" 33 #include "wme.h" 34 #include "led.h" 35 #include "wep.h" 36 37 /* privid for wiphys to determine whether they belong to us or not */ 38 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; 39 40 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) 41 { 42 struct ieee80211_local *local; 43 44 local = wiphy_priv(wiphy); 45 return &local->hw; 46 } 47 EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 48 49 const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited = { 50 .mode = IEEE80211_CONN_MODE_EHT, 51 .bw_limit = IEEE80211_CONN_BW_LIMIT_320, 52 }; 53 54 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 55 enum nl80211_iftype type) 56 { 57 __le16 fc = hdr->frame_control; 58 59 if (ieee80211_is_data(fc)) { 60 if (len < 24) /* drop incorrect hdr len (data) */ 61 return NULL; 62 63 if (ieee80211_has_a4(fc)) 64 return NULL; 65 if (ieee80211_has_tods(fc)) 66 return hdr->addr1; 67 if (ieee80211_has_fromds(fc)) 68 return hdr->addr2; 69 70 return hdr->addr3; 71 } 72 73 if (ieee80211_is_s1g_beacon(fc)) { 74 struct ieee80211_ext *ext = (void *) hdr; 75 76 return ext->u.s1g_beacon.sa; 77 } 78 79 if (ieee80211_is_mgmt(fc)) { 80 if (len < 24) /* drop incorrect hdr len (mgmt) */ 81 return NULL; 82 return hdr->addr3; 83 } 84 85 if (ieee80211_is_ctl(fc)) { 86 if (ieee80211_is_pspoll(fc)) 87 return hdr->addr1; 88 89 if (ieee80211_is_back_req(fc)) { 90 switch (type) { 91 case NL80211_IFTYPE_STATION: 92 return hdr->addr2; 93 case NL80211_IFTYPE_AP: 94 case NL80211_IFTYPE_AP_VLAN: 95 return hdr->addr1; 96 default: 97 break; /* fall through to the return */ 98 } 99 } 100 } 101 102 return NULL; 103 } 104 EXPORT_SYMBOL(ieee80211_get_bssid); 105 106 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 107 { 108 struct sk_buff *skb; 109 struct ieee80211_hdr *hdr; 110 111 skb_queue_walk(&tx->skbs, skb) { 112 hdr = (struct ieee80211_hdr *) skb->data; 113 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 114 } 115 } 116 117 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 118 int rate, int erp, int short_preamble) 119 { 120 int dur; 121 122 /* calculate duration (in microseconds, rounded up to next higher 123 * integer if it includes a fractional microsecond) to send frame of 124 * len bytes (does not include FCS) at the given rate. Duration will 125 * also include SIFS. 126 * 127 * rate is in 100 kbps, so divident is multiplied by 10 in the 128 * DIV_ROUND_UP() operations. 129 */ 130 131 if (band == NL80211_BAND_5GHZ || erp) { 132 /* 133 * OFDM: 134 * 135 * N_DBPS = DATARATE x 4 136 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 137 * (16 = SIGNAL time, 6 = tail bits) 138 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 139 * 140 * T_SYM = 4 usec 141 * 802.11a - 18.5.2: aSIFSTime = 16 usec 142 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 143 * signal ext = 6 usec 144 */ 145 dur = 16; /* SIFS + signal ext */ 146 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 147 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 148 149 /* rates should already consider the channel bandwidth, 150 * don't apply divisor again. 151 */ 152 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 153 4 * rate); /* T_SYM x N_SYM */ 154 } else { 155 /* 156 * 802.11b or 802.11g with 802.11b compatibility: 157 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 158 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 159 * 160 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 161 * aSIFSTime = 10 usec 162 * aPreambleLength = 144 usec or 72 usec with short preamble 163 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 164 */ 165 dur = 10; /* aSIFSTime = 10 usec */ 166 dur += short_preamble ? (72 + 24) : (144 + 48); 167 168 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 169 } 170 171 return dur; 172 } 173 174 /* Exported duration function for driver use */ 175 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 176 struct ieee80211_vif *vif, 177 enum nl80211_band band, 178 size_t frame_len, 179 struct ieee80211_rate *rate) 180 { 181 struct ieee80211_sub_if_data *sdata; 182 u16 dur; 183 int erp; 184 bool short_preamble = false; 185 186 erp = 0; 187 if (vif) { 188 sdata = vif_to_sdata(vif); 189 short_preamble = sdata->vif.bss_conf.use_short_preamble; 190 if (sdata->deflink.operating_11g_mode) 191 erp = rate->flags & IEEE80211_RATE_ERP_G; 192 } 193 194 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 195 short_preamble); 196 197 return cpu_to_le16(dur); 198 } 199 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 200 201 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 202 struct ieee80211_vif *vif, size_t frame_len, 203 const struct ieee80211_tx_info *frame_txctl) 204 { 205 struct ieee80211_local *local = hw_to_local(hw); 206 struct ieee80211_rate *rate; 207 struct ieee80211_sub_if_data *sdata; 208 bool short_preamble; 209 int erp, bitrate; 210 u16 dur; 211 struct ieee80211_supported_band *sband; 212 213 sband = local->hw.wiphy->bands[frame_txctl->band]; 214 215 short_preamble = false; 216 217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 218 219 erp = 0; 220 if (vif) { 221 sdata = vif_to_sdata(vif); 222 short_preamble = sdata->vif.bss_conf.use_short_preamble; 223 if (sdata->deflink.operating_11g_mode) 224 erp = rate->flags & IEEE80211_RATE_ERP_G; 225 } 226 227 bitrate = rate->bitrate; 228 229 /* CTS duration */ 230 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 231 erp, short_preamble); 232 /* Data frame duration */ 233 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 234 erp, short_preamble); 235 /* ACK duration */ 236 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 237 erp, short_preamble); 238 239 return cpu_to_le16(dur); 240 } 241 EXPORT_SYMBOL(ieee80211_rts_duration); 242 243 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 244 struct ieee80211_vif *vif, 245 size_t frame_len, 246 const struct ieee80211_tx_info *frame_txctl) 247 { 248 struct ieee80211_local *local = hw_to_local(hw); 249 struct ieee80211_rate *rate; 250 struct ieee80211_sub_if_data *sdata; 251 bool short_preamble; 252 int erp, bitrate; 253 u16 dur; 254 struct ieee80211_supported_band *sband; 255 256 sband = local->hw.wiphy->bands[frame_txctl->band]; 257 258 short_preamble = false; 259 260 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 261 erp = 0; 262 if (vif) { 263 sdata = vif_to_sdata(vif); 264 short_preamble = sdata->vif.bss_conf.use_short_preamble; 265 if (sdata->deflink.operating_11g_mode) 266 erp = rate->flags & IEEE80211_RATE_ERP_G; 267 } 268 269 bitrate = rate->bitrate; 270 271 /* Data frame duration */ 272 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 273 erp, short_preamble); 274 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 275 /* ACK duration */ 276 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 277 erp, short_preamble); 278 } 279 280 return cpu_to_le16(dur); 281 } 282 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 283 284 static void wake_tx_push_queue(struct ieee80211_local *local, 285 struct ieee80211_sub_if_data *sdata, 286 struct ieee80211_txq *queue) 287 { 288 struct ieee80211_tx_control control = { 289 .sta = queue->sta, 290 }; 291 struct sk_buff *skb; 292 293 while (1) { 294 skb = ieee80211_tx_dequeue(&local->hw, queue); 295 if (!skb) 296 break; 297 298 drv_tx(local, &control, skb); 299 } 300 } 301 302 /* wake_tx_queue handler for driver not implementing a custom one*/ 303 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 304 struct ieee80211_txq *txq) 305 { 306 struct ieee80211_local *local = hw_to_local(hw); 307 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 308 struct ieee80211_txq *queue; 309 310 spin_lock(&local->handle_wake_tx_queue_lock); 311 312 /* Use ieee80211_next_txq() for airtime fairness accounting */ 313 ieee80211_txq_schedule_start(hw, txq->ac); 314 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 315 wake_tx_push_queue(local, sdata, queue); 316 ieee80211_return_txq(hw, queue, false); 317 } 318 ieee80211_txq_schedule_end(hw, txq->ac); 319 spin_unlock(&local->handle_wake_tx_queue_lock); 320 } 321 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 322 323 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 324 { 325 struct ieee80211_local *local = sdata->local; 326 struct ieee80211_vif *vif = &sdata->vif; 327 struct fq *fq = &local->fq; 328 struct ps_data *ps = NULL; 329 struct txq_info *txqi; 330 struct sta_info *sta; 331 int i; 332 333 local_bh_disable(); 334 spin_lock(&fq->lock); 335 336 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 337 goto out; 338 339 if (sdata->vif.type == NL80211_IFTYPE_AP) 340 ps = &sdata->bss->ps; 341 342 list_for_each_entry_rcu(sta, &local->sta_list, list) { 343 if (sdata != sta->sdata) 344 continue; 345 346 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 347 struct ieee80211_txq *txq = sta->sta.txq[i]; 348 349 if (!txq) 350 continue; 351 352 txqi = to_txq_info(txq); 353 354 if (ac != txq->ac) 355 continue; 356 357 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 358 &txqi->flags)) 359 continue; 360 361 spin_unlock(&fq->lock); 362 drv_wake_tx_queue(local, txqi); 363 spin_lock(&fq->lock); 364 } 365 } 366 367 if (!vif->txq) 368 goto out; 369 370 txqi = to_txq_info(vif->txq); 371 372 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 373 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 374 goto out; 375 376 spin_unlock(&fq->lock); 377 378 drv_wake_tx_queue(local, txqi); 379 local_bh_enable(); 380 return; 381 out: 382 spin_unlock(&fq->lock); 383 local_bh_enable(); 384 } 385 386 static void 387 __releases(&local->queue_stop_reason_lock) 388 __acquires(&local->queue_stop_reason_lock) 389 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 390 { 391 struct ieee80211_sub_if_data *sdata; 392 int n_acs = IEEE80211_NUM_ACS; 393 int i; 394 395 rcu_read_lock(); 396 397 if (local->hw.queues < IEEE80211_NUM_ACS) 398 n_acs = 1; 399 400 for (i = 0; i < local->hw.queues; i++) { 401 if (local->queue_stop_reasons[i]) 402 continue; 403 404 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 405 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 406 int ac; 407 408 for (ac = 0; ac < n_acs; ac++) { 409 int ac_queue = sdata->vif.hw_queue[ac]; 410 411 if (ac_queue == i || 412 sdata->vif.cab_queue == i) 413 __ieee80211_wake_txqs(sdata, ac); 414 } 415 } 416 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 417 } 418 419 rcu_read_unlock(); 420 } 421 422 void ieee80211_wake_txqs(struct tasklet_struct *t) 423 { 424 struct ieee80211_local *local = from_tasklet(local, t, 425 wake_txqs_tasklet); 426 unsigned long flags; 427 428 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 429 _ieee80211_wake_txqs(local, &flags); 430 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 431 } 432 433 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 434 enum queue_stop_reason reason, 435 bool refcounted, 436 unsigned long *flags) 437 { 438 struct ieee80211_local *local = hw_to_local(hw); 439 440 trace_wake_queue(local, queue, reason); 441 442 if (WARN_ON(queue >= hw->queues)) 443 return; 444 445 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 446 return; 447 448 if (!refcounted) { 449 local->q_stop_reasons[queue][reason] = 0; 450 } else { 451 local->q_stop_reasons[queue][reason]--; 452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 453 local->q_stop_reasons[queue][reason] = 0; 454 } 455 456 if (local->q_stop_reasons[queue][reason] == 0) 457 __clear_bit(reason, &local->queue_stop_reasons[queue]); 458 459 if (local->queue_stop_reasons[queue] != 0) 460 /* someone still has this queue stopped */ 461 return; 462 463 if (!skb_queue_empty(&local->pending[queue])) 464 tasklet_schedule(&local->tx_pending_tasklet); 465 466 /* 467 * Calling _ieee80211_wake_txqs here can be a problem because it may 468 * release queue_stop_reason_lock which has been taken by 469 * __ieee80211_wake_queue's caller. It is certainly not very nice to 470 * release someone's lock, but it is fine because all the callers of 471 * __ieee80211_wake_queue call it right before releasing the lock. 472 */ 473 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 474 tasklet_schedule(&local->wake_txqs_tasklet); 475 else 476 _ieee80211_wake_txqs(local, flags); 477 } 478 479 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 480 enum queue_stop_reason reason, 481 bool refcounted) 482 { 483 struct ieee80211_local *local = hw_to_local(hw); 484 unsigned long flags; 485 486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 487 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 489 } 490 491 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 492 { 493 ieee80211_wake_queue_by_reason(hw, queue, 494 IEEE80211_QUEUE_STOP_REASON_DRIVER, 495 false); 496 } 497 EXPORT_SYMBOL(ieee80211_wake_queue); 498 499 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 500 enum queue_stop_reason reason, 501 bool refcounted) 502 { 503 struct ieee80211_local *local = hw_to_local(hw); 504 505 trace_stop_queue(local, queue, reason); 506 507 if (WARN_ON(queue >= hw->queues)) 508 return; 509 510 if (!refcounted) 511 local->q_stop_reasons[queue][reason] = 1; 512 else 513 local->q_stop_reasons[queue][reason]++; 514 515 set_bit(reason, &local->queue_stop_reasons[queue]); 516 } 517 518 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 519 enum queue_stop_reason reason, 520 bool refcounted) 521 { 522 struct ieee80211_local *local = hw_to_local(hw); 523 unsigned long flags; 524 525 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 526 __ieee80211_stop_queue(hw, queue, reason, refcounted); 527 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 528 } 529 530 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 531 { 532 ieee80211_stop_queue_by_reason(hw, queue, 533 IEEE80211_QUEUE_STOP_REASON_DRIVER, 534 false); 535 } 536 EXPORT_SYMBOL(ieee80211_stop_queue); 537 538 void ieee80211_add_pending_skb(struct ieee80211_local *local, 539 struct sk_buff *skb) 540 { 541 struct ieee80211_hw *hw = &local->hw; 542 unsigned long flags; 543 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 544 int queue = info->hw_queue; 545 546 if (WARN_ON(!info->control.vif)) { 547 ieee80211_free_txskb(&local->hw, skb); 548 return; 549 } 550 551 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 552 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 553 false); 554 __skb_queue_tail(&local->pending[queue], skb); 555 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 556 false, &flags); 557 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 558 } 559 560 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 561 struct sk_buff_head *skbs) 562 { 563 struct ieee80211_hw *hw = &local->hw; 564 struct sk_buff *skb; 565 unsigned long flags; 566 int queue, i; 567 568 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 569 while ((skb = skb_dequeue(skbs))) { 570 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 571 572 if (WARN_ON(!info->control.vif)) { 573 ieee80211_free_txskb(&local->hw, skb); 574 continue; 575 } 576 577 queue = info->hw_queue; 578 579 __ieee80211_stop_queue(hw, queue, 580 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 581 false); 582 583 __skb_queue_tail(&local->pending[queue], skb); 584 } 585 586 for (i = 0; i < hw->queues; i++) 587 __ieee80211_wake_queue(hw, i, 588 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 589 false, &flags); 590 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 591 } 592 593 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 594 unsigned long queues, 595 enum queue_stop_reason reason, 596 bool refcounted) 597 { 598 struct ieee80211_local *local = hw_to_local(hw); 599 unsigned long flags; 600 int i; 601 602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 603 604 for_each_set_bit(i, &queues, hw->queues) 605 __ieee80211_stop_queue(hw, i, reason, refcounted); 606 607 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 608 } 609 610 void ieee80211_stop_queues(struct ieee80211_hw *hw) 611 { 612 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 613 IEEE80211_QUEUE_STOP_REASON_DRIVER, 614 false); 615 } 616 EXPORT_SYMBOL(ieee80211_stop_queues); 617 618 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 619 { 620 struct ieee80211_local *local = hw_to_local(hw); 621 unsigned long flags; 622 int ret; 623 624 if (WARN_ON(queue >= hw->queues)) 625 return true; 626 627 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 628 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 629 &local->queue_stop_reasons[queue]); 630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 631 return ret; 632 } 633 EXPORT_SYMBOL(ieee80211_queue_stopped); 634 635 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 636 unsigned long queues, 637 enum queue_stop_reason reason, 638 bool refcounted) 639 { 640 struct ieee80211_local *local = hw_to_local(hw); 641 unsigned long flags; 642 int i; 643 644 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 645 646 for_each_set_bit(i, &queues, hw->queues) 647 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 648 649 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 650 } 651 652 void ieee80211_wake_queues(struct ieee80211_hw *hw) 653 { 654 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 655 IEEE80211_QUEUE_STOP_REASON_DRIVER, 656 false); 657 } 658 EXPORT_SYMBOL(ieee80211_wake_queues); 659 660 static unsigned int 661 ieee80211_get_vif_queues(struct ieee80211_local *local, 662 struct ieee80211_sub_if_data *sdata) 663 { 664 unsigned int queues; 665 666 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 667 int ac; 668 669 queues = 0; 670 671 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 672 queues |= BIT(sdata->vif.hw_queue[ac]); 673 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 674 queues |= BIT(sdata->vif.cab_queue); 675 } else { 676 /* all queues */ 677 queues = BIT(local->hw.queues) - 1; 678 } 679 680 return queues; 681 } 682 683 void __ieee80211_flush_queues(struct ieee80211_local *local, 684 struct ieee80211_sub_if_data *sdata, 685 unsigned int queues, bool drop) 686 { 687 if (!local->ops->flush) 688 return; 689 690 /* 691 * If no queue was set, or if the HW doesn't support 692 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 693 */ 694 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 695 queues = ieee80211_get_vif_queues(local, sdata); 696 697 ieee80211_stop_queues_by_reason(&local->hw, queues, 698 IEEE80211_QUEUE_STOP_REASON_FLUSH, 699 false); 700 701 if (drop) { 702 struct sta_info *sta; 703 704 /* Purge the queues, so the frames on them won't be 705 * sent during __ieee80211_wake_queue() 706 */ 707 list_for_each_entry(sta, &local->sta_list, list) { 708 if (sdata != sta->sdata) 709 continue; 710 ieee80211_purge_sta_txqs(sta); 711 } 712 } 713 714 drv_flush(local, sdata, queues, drop); 715 716 ieee80211_wake_queues_by_reason(&local->hw, queues, 717 IEEE80211_QUEUE_STOP_REASON_FLUSH, 718 false); 719 } 720 721 void ieee80211_flush_queues(struct ieee80211_local *local, 722 struct ieee80211_sub_if_data *sdata, bool drop) 723 { 724 __ieee80211_flush_queues(local, sdata, 0, drop); 725 } 726 727 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 728 struct ieee80211_sub_if_data *sdata, 729 enum queue_stop_reason reason) 730 { 731 ieee80211_stop_queues_by_reason(&local->hw, 732 ieee80211_get_vif_queues(local, sdata), 733 reason, true); 734 } 735 736 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 737 struct ieee80211_sub_if_data *sdata, 738 enum queue_stop_reason reason) 739 { 740 ieee80211_wake_queues_by_reason(&local->hw, 741 ieee80211_get_vif_queues(local, sdata), 742 reason, true); 743 } 744 745 static void __iterate_interfaces(struct ieee80211_local *local, 746 u32 iter_flags, 747 void (*iterator)(void *data, u8 *mac, 748 struct ieee80211_vif *vif), 749 void *data) 750 { 751 struct ieee80211_sub_if_data *sdata; 752 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 753 754 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 755 switch (sdata->vif.type) { 756 case NL80211_IFTYPE_MONITOR: 757 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) 758 continue; 759 break; 760 case NL80211_IFTYPE_AP_VLAN: 761 continue; 762 default: 763 break; 764 } 765 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 766 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 767 continue; 768 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 769 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 continue; 771 if (ieee80211_sdata_running(sdata) || !active_only) 772 iterator(data, sdata->vif.addr, 773 &sdata->vif); 774 } 775 776 sdata = rcu_dereference_check(local->monitor_sdata, 777 lockdep_is_held(&local->iflist_mtx) || 778 lockdep_is_held(&local->hw.wiphy->mtx)); 779 if (sdata && 780 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 781 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 782 iterator(data, sdata->vif.addr, &sdata->vif); 783 } 784 785 void ieee80211_iterate_interfaces( 786 struct ieee80211_hw *hw, u32 iter_flags, 787 void (*iterator)(void *data, u8 *mac, 788 struct ieee80211_vif *vif), 789 void *data) 790 { 791 struct ieee80211_local *local = hw_to_local(hw); 792 793 mutex_lock(&local->iflist_mtx); 794 __iterate_interfaces(local, iter_flags, iterator, data); 795 mutex_unlock(&local->iflist_mtx); 796 } 797 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 798 799 void ieee80211_iterate_active_interfaces_atomic( 800 struct ieee80211_hw *hw, u32 iter_flags, 801 void (*iterator)(void *data, u8 *mac, 802 struct ieee80211_vif *vif), 803 void *data) 804 { 805 struct ieee80211_local *local = hw_to_local(hw); 806 807 rcu_read_lock(); 808 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 809 iterator, data); 810 rcu_read_unlock(); 811 } 812 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 813 814 void ieee80211_iterate_active_interfaces_mtx( 815 struct ieee80211_hw *hw, u32 iter_flags, 816 void (*iterator)(void *data, u8 *mac, 817 struct ieee80211_vif *vif), 818 void *data) 819 { 820 struct ieee80211_local *local = hw_to_local(hw); 821 822 lockdep_assert_wiphy(hw->wiphy); 823 824 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 825 iterator, data); 826 } 827 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx); 828 829 static void __iterate_stations(struct ieee80211_local *local, 830 void (*iterator)(void *data, 831 struct ieee80211_sta *sta), 832 void *data) 833 { 834 struct sta_info *sta; 835 836 list_for_each_entry_rcu(sta, &local->sta_list, list) { 837 if (!sta->uploaded) 838 continue; 839 840 iterator(data, &sta->sta); 841 } 842 } 843 844 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 845 void (*iterator)(void *data, 846 struct ieee80211_sta *sta), 847 void *data) 848 { 849 struct ieee80211_local *local = hw_to_local(hw); 850 851 rcu_read_lock(); 852 __iterate_stations(local, iterator, data); 853 rcu_read_unlock(); 854 } 855 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 856 857 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 858 { 859 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 860 861 if (!ieee80211_sdata_running(sdata) || 862 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 863 return NULL; 864 return &sdata->vif; 865 } 866 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 867 868 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 869 { 870 if (!vif) 871 return NULL; 872 873 return &vif_to_sdata(vif)->wdev; 874 } 875 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 876 877 /* 878 * Nothing should have been stuffed into the workqueue during 879 * the suspend->resume cycle. Since we can't check each caller 880 * of this function if we are already quiescing / suspended, 881 * check here and don't WARN since this can actually happen when 882 * the rx path (for example) is racing against __ieee80211_suspend 883 * and suspending / quiescing was set after the rx path checked 884 * them. 885 */ 886 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 887 { 888 if (local->quiescing || (local->suspended && !local->resuming)) { 889 pr_warn("queueing ieee80211 work while going to suspend\n"); 890 return false; 891 } 892 893 return true; 894 } 895 896 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 897 { 898 struct ieee80211_local *local = hw_to_local(hw); 899 900 if (!ieee80211_can_queue_work(local)) 901 return; 902 903 queue_work(local->workqueue, work); 904 } 905 EXPORT_SYMBOL(ieee80211_queue_work); 906 907 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 908 struct delayed_work *dwork, 909 unsigned long delay) 910 { 911 struct ieee80211_local *local = hw_to_local(hw); 912 913 if (!ieee80211_can_queue_work(local)) 914 return; 915 916 queue_delayed_work(local->workqueue, dwork, delay); 917 } 918 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 919 920 static void 921 ieee80211_parse_extension_element(u32 *crc, 922 const struct element *elem, 923 struct ieee802_11_elems *elems, 924 struct ieee80211_elems_parse_params *params) 925 { 926 const void *data = elem->data + 1; 927 bool calc_crc = false; 928 u8 len; 929 930 if (!elem->datalen) 931 return; 932 933 len = elem->datalen - 1; 934 935 switch (elem->data[0]) { 936 case WLAN_EID_EXT_HE_MU_EDCA: 937 if (params->mode < IEEE80211_CONN_MODE_HE) 938 break; 939 calc_crc = true; 940 if (len >= sizeof(*elems->mu_edca_param_set)) 941 elems->mu_edca_param_set = data; 942 break; 943 case WLAN_EID_EXT_HE_CAPABILITY: 944 if (params->mode < IEEE80211_CONN_MODE_HE) 945 break; 946 if (ieee80211_he_capa_size_ok(data, len)) { 947 elems->he_cap = data; 948 elems->he_cap_len = len; 949 } 950 break; 951 case WLAN_EID_EXT_HE_OPERATION: 952 if (params->mode < IEEE80211_CONN_MODE_HE) 953 break; 954 calc_crc = true; 955 if (len >= sizeof(*elems->he_operation) && 956 len >= ieee80211_he_oper_size(data) - 1) 957 elems->he_operation = data; 958 break; 959 case WLAN_EID_EXT_UORA: 960 if (params->mode < IEEE80211_CONN_MODE_HE) 961 break; 962 if (len >= 1) 963 elems->uora_element = data; 964 break; 965 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME: 966 if (len == 3) 967 elems->max_channel_switch_time = data; 968 break; 969 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION: 970 if (len >= sizeof(*elems->mbssid_config_ie)) 971 elems->mbssid_config_ie = data; 972 break; 973 case WLAN_EID_EXT_HE_SPR: 974 if (params->mode < IEEE80211_CONN_MODE_HE) 975 break; 976 if (len >= sizeof(*elems->he_spr) && 977 len >= ieee80211_he_spr_size(data)) 978 elems->he_spr = data; 979 break; 980 case WLAN_EID_EXT_HE_6GHZ_CAPA: 981 if (params->mode < IEEE80211_CONN_MODE_HE) 982 break; 983 if (len >= sizeof(*elems->he_6ghz_capa)) 984 elems->he_6ghz_capa = data; 985 break; 986 case WLAN_EID_EXT_EHT_CAPABILITY: 987 if (params->mode < IEEE80211_CONN_MODE_EHT) 988 break; 989 if (ieee80211_eht_capa_size_ok(elems->he_cap, 990 data, len, 991 params->from_ap)) { 992 elems->eht_cap = data; 993 elems->eht_cap_len = len; 994 } 995 break; 996 case WLAN_EID_EXT_EHT_OPERATION: 997 if (params->mode < IEEE80211_CONN_MODE_EHT) 998 break; 999 if (ieee80211_eht_oper_size_ok(data, len)) 1000 elems->eht_operation = data; 1001 calc_crc = true; 1002 break; 1003 case WLAN_EID_EXT_EHT_MULTI_LINK: 1004 if (params->mode < IEEE80211_CONN_MODE_EHT) 1005 break; 1006 calc_crc = true; 1007 1008 if (ieee80211_mle_size_ok(data, len)) { 1009 const struct ieee80211_multi_link_elem *mle = 1010 (void *)data; 1011 1012 switch (le16_get_bits(mle->control, 1013 IEEE80211_ML_CONTROL_TYPE)) { 1014 case IEEE80211_ML_CONTROL_TYPE_BASIC: 1015 elems->ml_basic_elem = (void *)elem; 1016 elems->ml_basic = data; 1017 elems->ml_basic_len = len; 1018 break; 1019 case IEEE80211_ML_CONTROL_TYPE_RECONF: 1020 elems->ml_reconf_elem = (void *)elem; 1021 elems->ml_reconf = data; 1022 elems->ml_reconf_len = len; 1023 break; 1024 default: 1025 break; 1026 } 1027 } 1028 break; 1029 case WLAN_EID_EXT_BANDWIDTH_INDICATION: 1030 if (params->mode < IEEE80211_CONN_MODE_EHT) 1031 break; 1032 if (ieee80211_bandwidth_indication_size_ok(data, len)) 1033 elems->bandwidth_indication = data; 1034 calc_crc = true; 1035 break; 1036 case WLAN_EID_EXT_TID_TO_LINK_MAPPING: 1037 if (params->mode < IEEE80211_CONN_MODE_EHT) 1038 break; 1039 calc_crc = true; 1040 if (ieee80211_tid_to_link_map_size_ok(data, len) && 1041 elems->ttlm_num < ARRAY_SIZE(elems->ttlm)) { 1042 elems->ttlm[elems->ttlm_num] = (void *)data; 1043 elems->ttlm_num++; 1044 } 1045 break; 1046 } 1047 1048 if (crc && calc_crc) 1049 *crc = crc32_be(*crc, (void *)elem, elem->datalen + 2); 1050 } 1051 1052 static u32 1053 _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params, 1054 struct ieee802_11_elems *elems, 1055 const struct element *check_inherit) 1056 { 1057 const struct element *elem; 1058 bool calc_crc = params->filter != 0; 1059 DECLARE_BITMAP(seen_elems, 256); 1060 u32 crc = params->crc; 1061 1062 bitmap_zero(seen_elems, 256); 1063 1064 for_each_element(elem, params->start, params->len) { 1065 const struct element *subelem; 1066 bool elem_parse_failed; 1067 u8 id = elem->id; 1068 u8 elen = elem->datalen; 1069 const u8 *pos = elem->data; 1070 1071 if (check_inherit && 1072 !cfg80211_is_element_inherited(elem, 1073 check_inherit)) 1074 continue; 1075 1076 switch (id) { 1077 case WLAN_EID_SSID: 1078 case WLAN_EID_SUPP_RATES: 1079 case WLAN_EID_FH_PARAMS: 1080 case WLAN_EID_DS_PARAMS: 1081 case WLAN_EID_CF_PARAMS: 1082 case WLAN_EID_TIM: 1083 case WLAN_EID_IBSS_PARAMS: 1084 case WLAN_EID_CHALLENGE: 1085 case WLAN_EID_RSN: 1086 case WLAN_EID_ERP_INFO: 1087 case WLAN_EID_EXT_SUPP_RATES: 1088 case WLAN_EID_HT_CAPABILITY: 1089 case WLAN_EID_HT_OPERATION: 1090 case WLAN_EID_VHT_CAPABILITY: 1091 case WLAN_EID_VHT_OPERATION: 1092 case WLAN_EID_MESH_ID: 1093 case WLAN_EID_MESH_CONFIG: 1094 case WLAN_EID_PEER_MGMT: 1095 case WLAN_EID_PREQ: 1096 case WLAN_EID_PREP: 1097 case WLAN_EID_PERR: 1098 case WLAN_EID_RANN: 1099 case WLAN_EID_CHANNEL_SWITCH: 1100 case WLAN_EID_EXT_CHANSWITCH_ANN: 1101 case WLAN_EID_COUNTRY: 1102 case WLAN_EID_PWR_CONSTRAINT: 1103 case WLAN_EID_TIMEOUT_INTERVAL: 1104 case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 1105 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1106 case WLAN_EID_CHAN_SWITCH_PARAM: 1107 case WLAN_EID_EXT_CAPABILITY: 1108 case WLAN_EID_CHAN_SWITCH_TIMING: 1109 case WLAN_EID_LINK_ID: 1110 case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1111 case WLAN_EID_RSNX: 1112 case WLAN_EID_S1G_BCN_COMPAT: 1113 case WLAN_EID_S1G_CAPABILITIES: 1114 case WLAN_EID_S1G_OPERATION: 1115 case WLAN_EID_AID_RESPONSE: 1116 case WLAN_EID_S1G_SHORT_BCN_INTERVAL: 1117 /* 1118 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 1119 * that if the content gets bigger it might be needed more than once 1120 */ 1121 if (test_bit(id, seen_elems)) { 1122 elems->parse_error = true; 1123 continue; 1124 } 1125 break; 1126 } 1127 1128 if (calc_crc && id < 64 && (params->filter & (1ULL << id))) 1129 crc = crc32_be(crc, pos - 2, elen + 2); 1130 1131 elem_parse_failed = false; 1132 1133 switch (id) { 1134 case WLAN_EID_LINK_ID: 1135 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) { 1136 elem_parse_failed = true; 1137 break; 1138 } 1139 elems->lnk_id = (void *)(pos - 2); 1140 break; 1141 case WLAN_EID_CHAN_SWITCH_TIMING: 1142 if (elen < sizeof(struct ieee80211_ch_switch_timing)) { 1143 elem_parse_failed = true; 1144 break; 1145 } 1146 elems->ch_sw_timing = (void *)pos; 1147 break; 1148 case WLAN_EID_EXT_CAPABILITY: 1149 elems->ext_capab = pos; 1150 elems->ext_capab_len = elen; 1151 break; 1152 case WLAN_EID_SSID: 1153 elems->ssid = pos; 1154 elems->ssid_len = elen; 1155 break; 1156 case WLAN_EID_SUPP_RATES: 1157 elems->supp_rates = pos; 1158 elems->supp_rates_len = elen; 1159 break; 1160 case WLAN_EID_DS_PARAMS: 1161 if (elen >= 1) 1162 elems->ds_params = pos; 1163 else 1164 elem_parse_failed = true; 1165 break; 1166 case WLAN_EID_TIM: 1167 if (elen >= sizeof(struct ieee80211_tim_ie)) { 1168 elems->tim = (void *)pos; 1169 elems->tim_len = elen; 1170 } else 1171 elem_parse_failed = true; 1172 break; 1173 case WLAN_EID_VENDOR_SPECIFIC: 1174 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 1175 pos[2] == 0xf2) { 1176 /* Microsoft OUI (00:50:F2) */ 1177 1178 if (calc_crc) 1179 crc = crc32_be(crc, pos - 2, elen + 2); 1180 1181 if (elen >= 5 && pos[3] == 2) { 1182 /* OUI Type 2 - WMM IE */ 1183 if (pos[4] == 0) { 1184 elems->wmm_info = pos; 1185 elems->wmm_info_len = elen; 1186 } else if (pos[4] == 1) { 1187 elems->wmm_param = pos; 1188 elems->wmm_param_len = elen; 1189 } 1190 } 1191 } 1192 break; 1193 case WLAN_EID_RSN: 1194 elems->rsn = pos; 1195 elems->rsn_len = elen; 1196 break; 1197 case WLAN_EID_ERP_INFO: 1198 if (elen >= 1) 1199 elems->erp_info = pos; 1200 else 1201 elem_parse_failed = true; 1202 break; 1203 case WLAN_EID_EXT_SUPP_RATES: 1204 elems->ext_supp_rates = pos; 1205 elems->ext_supp_rates_len = elen; 1206 break; 1207 case WLAN_EID_HT_CAPABILITY: 1208 if (params->mode < IEEE80211_CONN_MODE_HT) 1209 break; 1210 if (elen >= sizeof(struct ieee80211_ht_cap)) 1211 elems->ht_cap_elem = (void *)pos; 1212 else 1213 elem_parse_failed = true; 1214 break; 1215 case WLAN_EID_HT_OPERATION: 1216 if (params->mode < IEEE80211_CONN_MODE_HT) 1217 break; 1218 if (elen >= sizeof(struct ieee80211_ht_operation)) 1219 elems->ht_operation = (void *)pos; 1220 else 1221 elem_parse_failed = true; 1222 break; 1223 case WLAN_EID_VHT_CAPABILITY: 1224 if (params->mode < IEEE80211_CONN_MODE_VHT) 1225 break; 1226 if (elen >= sizeof(struct ieee80211_vht_cap)) 1227 elems->vht_cap_elem = (void *)pos; 1228 else 1229 elem_parse_failed = true; 1230 break; 1231 case WLAN_EID_VHT_OPERATION: 1232 if (params->mode < IEEE80211_CONN_MODE_VHT) 1233 break; 1234 if (elen >= sizeof(struct ieee80211_vht_operation)) { 1235 elems->vht_operation = (void *)pos; 1236 if (calc_crc) 1237 crc = crc32_be(crc, pos - 2, elen + 2); 1238 break; 1239 } 1240 elem_parse_failed = true; 1241 break; 1242 case WLAN_EID_OPMODE_NOTIF: 1243 if (params->mode < IEEE80211_CONN_MODE_VHT) 1244 break; 1245 if (elen > 0) { 1246 elems->opmode_notif = pos; 1247 if (calc_crc) 1248 crc = crc32_be(crc, pos - 2, elen + 2); 1249 break; 1250 } 1251 elem_parse_failed = true; 1252 break; 1253 case WLAN_EID_MESH_ID: 1254 elems->mesh_id = pos; 1255 elems->mesh_id_len = elen; 1256 break; 1257 case WLAN_EID_MESH_CONFIG: 1258 if (elen >= sizeof(struct ieee80211_meshconf_ie)) 1259 elems->mesh_config = (void *)pos; 1260 else 1261 elem_parse_failed = true; 1262 break; 1263 case WLAN_EID_PEER_MGMT: 1264 elems->peering = pos; 1265 elems->peering_len = elen; 1266 break; 1267 case WLAN_EID_MESH_AWAKE_WINDOW: 1268 if (elen >= 2) 1269 elems->awake_window = (void *)pos; 1270 break; 1271 case WLAN_EID_PREQ: 1272 elems->preq = pos; 1273 elems->preq_len = elen; 1274 break; 1275 case WLAN_EID_PREP: 1276 elems->prep = pos; 1277 elems->prep_len = elen; 1278 break; 1279 case WLAN_EID_PERR: 1280 elems->perr = pos; 1281 elems->perr_len = elen; 1282 break; 1283 case WLAN_EID_RANN: 1284 if (elen >= sizeof(struct ieee80211_rann_ie)) 1285 elems->rann = (void *)pos; 1286 else 1287 elem_parse_failed = true; 1288 break; 1289 case WLAN_EID_CHANNEL_SWITCH: 1290 if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 1291 elem_parse_failed = true; 1292 break; 1293 } 1294 elems->ch_switch_ie = (void *)pos; 1295 break; 1296 case WLAN_EID_EXT_CHANSWITCH_ANN: 1297 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 1298 elem_parse_failed = true; 1299 break; 1300 } 1301 elems->ext_chansw_ie = (void *)pos; 1302 break; 1303 case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 1304 if (params->mode < IEEE80211_CONN_MODE_HT) 1305 break; 1306 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 1307 elem_parse_failed = true; 1308 break; 1309 } 1310 elems->sec_chan_offs = (void *)pos; 1311 break; 1312 case WLAN_EID_CHAN_SWITCH_PARAM: 1313 if (elen < 1314 sizeof(*elems->mesh_chansw_params_ie)) { 1315 elem_parse_failed = true; 1316 break; 1317 } 1318 elems->mesh_chansw_params_ie = (void *)pos; 1319 break; 1320 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1321 if (params->mode < IEEE80211_CONN_MODE_VHT) 1322 break; 1323 if (!params->action || 1324 elen < sizeof(*elems->wide_bw_chansw_ie)) { 1325 elem_parse_failed = true; 1326 break; 1327 } 1328 elems->wide_bw_chansw_ie = (void *)pos; 1329 break; 1330 case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 1331 if (params->mode < IEEE80211_CONN_MODE_VHT) 1332 break; 1333 if (params->action) { 1334 elem_parse_failed = true; 1335 break; 1336 } 1337 /* 1338 * This is a bit tricky, but as we only care about 1339 * a few elements, parse them out manually. 1340 */ 1341 subelem = cfg80211_find_elem(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 1342 pos, elen); 1343 if (subelem) { 1344 if (subelem->datalen >= sizeof(*elems->wide_bw_chansw_ie)) 1345 elems->wide_bw_chansw_ie = 1346 (void *)subelem->data; 1347 else 1348 elem_parse_failed = true; 1349 } 1350 1351 if (params->mode < IEEE80211_CONN_MODE_EHT) 1352 break; 1353 1354 subelem = cfg80211_find_ext_elem(WLAN_EID_EXT_BANDWIDTH_INDICATION, 1355 pos, elen); 1356 if (subelem) { 1357 const void *edata = subelem->data + 1; 1358 u8 edatalen = subelem->datalen - 1; 1359 1360 if (ieee80211_bandwidth_indication_size_ok(edata, 1361 edatalen)) 1362 elems->bandwidth_indication = edata; 1363 else 1364 elem_parse_failed = true; 1365 } 1366 break; 1367 case WLAN_EID_COUNTRY: 1368 elems->country_elem = pos; 1369 elems->country_elem_len = elen; 1370 break; 1371 case WLAN_EID_PWR_CONSTRAINT: 1372 if (elen != 1) { 1373 elem_parse_failed = true; 1374 break; 1375 } 1376 elems->pwr_constr_elem = pos; 1377 break; 1378 case WLAN_EID_CISCO_VENDOR_SPECIFIC: 1379 /* Lots of different options exist, but we only care 1380 * about the Dynamic Transmit Power Control element. 1381 * First check for the Cisco OUI, then for the DTPC 1382 * tag (0x00). 1383 */ 1384 if (elen < 4) { 1385 elem_parse_failed = true; 1386 break; 1387 } 1388 1389 if (pos[0] != 0x00 || pos[1] != 0x40 || 1390 pos[2] != 0x96 || pos[3] != 0x00) 1391 break; 1392 1393 if (elen != 6) { 1394 elem_parse_failed = true; 1395 break; 1396 } 1397 1398 if (calc_crc) 1399 crc = crc32_be(crc, pos - 2, elen + 2); 1400 1401 elems->cisco_dtpc_elem = pos; 1402 break; 1403 case WLAN_EID_ADDBA_EXT: 1404 if (elen < sizeof(struct ieee80211_addba_ext_ie)) { 1405 elem_parse_failed = true; 1406 break; 1407 } 1408 elems->addba_ext_ie = (void *)pos; 1409 break; 1410 case WLAN_EID_TIMEOUT_INTERVAL: 1411 if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 1412 elems->timeout_int = (void *)pos; 1413 else 1414 elem_parse_failed = true; 1415 break; 1416 case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1417 if (elen >= sizeof(*elems->max_idle_period_ie)) 1418 elems->max_idle_period_ie = (void *)pos; 1419 break; 1420 case WLAN_EID_RSNX: 1421 elems->rsnx = pos; 1422 elems->rsnx_len = elen; 1423 break; 1424 case WLAN_EID_TX_POWER_ENVELOPE: 1425 if (elen < 1 || 1426 elen > sizeof(struct ieee80211_tx_pwr_env)) 1427 break; 1428 1429 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env)) 1430 break; 1431 1432 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos; 1433 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen; 1434 elems->tx_pwr_env_num++; 1435 break; 1436 case WLAN_EID_EXTENSION: 1437 ieee80211_parse_extension_element(calc_crc ? 1438 &crc : NULL, 1439 elem, elems, params); 1440 break; 1441 case WLAN_EID_S1G_CAPABILITIES: 1442 if (params->mode != IEEE80211_CONN_MODE_S1G) 1443 break; 1444 if (elen >= sizeof(*elems->s1g_capab)) 1445 elems->s1g_capab = (void *)pos; 1446 else 1447 elem_parse_failed = true; 1448 break; 1449 case WLAN_EID_S1G_OPERATION: 1450 if (params->mode != IEEE80211_CONN_MODE_S1G) 1451 break; 1452 if (elen == sizeof(*elems->s1g_oper)) 1453 elems->s1g_oper = (void *)pos; 1454 else 1455 elem_parse_failed = true; 1456 break; 1457 case WLAN_EID_S1G_BCN_COMPAT: 1458 if (params->mode != IEEE80211_CONN_MODE_S1G) 1459 break; 1460 if (elen == sizeof(*elems->s1g_bcn_compat)) 1461 elems->s1g_bcn_compat = (void *)pos; 1462 else 1463 elem_parse_failed = true; 1464 break; 1465 case WLAN_EID_AID_RESPONSE: 1466 if (params->mode != IEEE80211_CONN_MODE_S1G) 1467 break; 1468 if (elen == sizeof(struct ieee80211_aid_response_ie)) 1469 elems->aid_resp = (void *)pos; 1470 else 1471 elem_parse_failed = true; 1472 break; 1473 default: 1474 break; 1475 } 1476 1477 if (elem_parse_failed) 1478 elems->parse_error = true; 1479 else 1480 __set_bit(id, seen_elems); 1481 } 1482 1483 if (!for_each_element_completed(elem, params->start, params->len)) 1484 elems->parse_error = true; 1485 1486 return crc; 1487 } 1488 1489 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len, 1490 struct ieee802_11_elems *elems, 1491 struct cfg80211_bss *bss, 1492 u8 *nontransmitted_profile) 1493 { 1494 const struct element *elem, *sub; 1495 size_t profile_len = 0; 1496 bool found = false; 1497 1498 if (!bss || !bss->transmitted_bss) 1499 return profile_len; 1500 1501 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) { 1502 if (elem->datalen < 2) 1503 continue; 1504 if (elem->data[0] < 1 || elem->data[0] > 8) 1505 continue; 1506 1507 for_each_element(sub, elem->data + 1, elem->datalen - 1) { 1508 u8 new_bssid[ETH_ALEN]; 1509 const u8 *index; 1510 1511 if (sub->id != 0 || sub->datalen < 4) { 1512 /* not a valid BSS profile */ 1513 continue; 1514 } 1515 1516 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP || 1517 sub->data[1] != 2) { 1518 /* The first element of the 1519 * Nontransmitted BSSID Profile is not 1520 * the Nontransmitted BSSID Capability 1521 * element. 1522 */ 1523 continue; 1524 } 1525 1526 memset(nontransmitted_profile, 0, len); 1527 profile_len = cfg80211_merge_profile(start, len, 1528 elem, 1529 sub, 1530 nontransmitted_profile, 1531 len); 1532 1533 /* found a Nontransmitted BSSID Profile */ 1534 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, 1535 nontransmitted_profile, 1536 profile_len); 1537 if (!index || index[1] < 1 || index[2] == 0) { 1538 /* Invalid MBSSID Index element */ 1539 continue; 1540 } 1541 1542 cfg80211_gen_new_bssid(bss->transmitted_bss->bssid, 1543 elem->data[0], 1544 index[2], 1545 new_bssid); 1546 if (ether_addr_equal(new_bssid, bss->bssid)) { 1547 found = true; 1548 elems->bssid_index_len = index[1]; 1549 elems->bssid_index = (void *)&index[2]; 1550 break; 1551 } 1552 } 1553 } 1554 1555 return found ? profile_len : 0; 1556 } 1557 1558 static void ieee80211_mle_get_sta_prof(struct ieee802_11_elems *elems, 1559 u8 link_id) 1560 { 1561 const struct ieee80211_multi_link_elem *ml = elems->ml_basic; 1562 ssize_t ml_len = elems->ml_basic_len; 1563 const struct element *sub; 1564 1565 if (!ml || !ml_len) 1566 return; 1567 1568 if (le16_get_bits(ml->control, IEEE80211_ML_CONTROL_TYPE) != 1569 IEEE80211_ML_CONTROL_TYPE_BASIC) 1570 return; 1571 1572 for_each_mle_subelement(sub, (u8 *)ml, ml_len) { 1573 struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data; 1574 ssize_t sta_prof_len; 1575 u16 control; 1576 1577 if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE) 1578 continue; 1579 1580 if (!ieee80211_mle_basic_sta_prof_size_ok(sub->data, 1581 sub->datalen)) 1582 return; 1583 1584 control = le16_to_cpu(prof->control); 1585 1586 if (link_id != u16_get_bits(control, 1587 IEEE80211_MLE_STA_CONTROL_LINK_ID)) 1588 continue; 1589 1590 if (!(control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE)) 1591 return; 1592 1593 /* the sub element can be fragmented */ 1594 sta_prof_len = 1595 cfg80211_defragment_element(sub, 1596 (u8 *)ml, ml_len, 1597 elems->scratch_pos, 1598 elems->scratch + 1599 elems->scratch_len - 1600 elems->scratch_pos, 1601 IEEE80211_MLE_SUBELEM_FRAGMENT); 1602 1603 if (sta_prof_len < 0) 1604 return; 1605 1606 elems->prof = (void *)elems->scratch_pos; 1607 elems->sta_prof_len = sta_prof_len; 1608 elems->scratch_pos += sta_prof_len; 1609 1610 return; 1611 } 1612 } 1613 1614 static void ieee80211_mle_parse_link(struct ieee802_11_elems *elems, 1615 struct ieee80211_elems_parse_params *params) 1616 { 1617 struct ieee80211_mle_per_sta_profile *prof; 1618 struct ieee80211_elems_parse_params sub = { 1619 .mode = params->mode, 1620 .action = params->action, 1621 .from_ap = params->from_ap, 1622 .link_id = -1, 1623 }; 1624 ssize_t ml_len = elems->ml_basic_len; 1625 const struct element *non_inherit = NULL; 1626 const u8 *end; 1627 1628 if (params->link_id == -1) 1629 return; 1630 1631 ml_len = cfg80211_defragment_element(elems->ml_basic_elem, 1632 elems->ie_start, 1633 elems->total_len, 1634 elems->scratch_pos, 1635 elems->scratch + 1636 elems->scratch_len - 1637 elems->scratch_pos, 1638 WLAN_EID_FRAGMENT); 1639 1640 if (ml_len < 0) 1641 return; 1642 1643 elems->ml_basic = (const void *)elems->scratch_pos; 1644 elems->ml_basic_len = ml_len; 1645 1646 ieee80211_mle_get_sta_prof(elems, params->link_id); 1647 prof = elems->prof; 1648 1649 if (!prof) 1650 return; 1651 1652 /* check if we have the 4 bytes for the fixed part in assoc response */ 1653 if (elems->sta_prof_len < sizeof(*prof) + prof->sta_info_len - 1 + 4) { 1654 elems->prof = NULL; 1655 elems->sta_prof_len = 0; 1656 return; 1657 } 1658 1659 /* 1660 * Skip the capability information and the status code that are expected 1661 * as part of the station profile in association response frames. Note 1662 * the -1 is because the 'sta_info_len' is accounted to as part of the 1663 * per-STA profile, but not part of the 'u8 variable[]' portion. 1664 */ 1665 sub.start = prof->variable + prof->sta_info_len - 1 + 4; 1666 end = (const u8 *)prof + elems->sta_prof_len; 1667 sub.len = end - sub.start; 1668 1669 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, 1670 sub.start, sub.len); 1671 _ieee802_11_parse_elems_full(&sub, elems, non_inherit); 1672 } 1673 1674 struct ieee802_11_elems * 1675 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params) 1676 { 1677 struct ieee802_11_elems *elems; 1678 const struct element *non_inherit = NULL; 1679 u8 *nontransmitted_profile; 1680 int nontransmitted_profile_len = 0; 1681 size_t scratch_len = 3 * params->len; 1682 1683 elems = kzalloc(struct_size(elems, scratch, scratch_len), GFP_ATOMIC); 1684 if (!elems) 1685 return NULL; 1686 elems->ie_start = params->start; 1687 elems->total_len = params->len; 1688 elems->scratch_len = scratch_len; 1689 elems->scratch_pos = elems->scratch; 1690 1691 nontransmitted_profile = elems->scratch_pos; 1692 nontransmitted_profile_len = 1693 ieee802_11_find_bssid_profile(params->start, params->len, 1694 elems, params->bss, 1695 nontransmitted_profile); 1696 elems->scratch_pos += nontransmitted_profile_len; 1697 elems->scratch_len -= nontransmitted_profile_len; 1698 non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, 1699 nontransmitted_profile, 1700 nontransmitted_profile_len); 1701 1702 elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit); 1703 1704 /* Override with nontransmitted profile, if found */ 1705 if (nontransmitted_profile_len) { 1706 struct ieee80211_elems_parse_params sub = { 1707 .mode = params->mode, 1708 .start = nontransmitted_profile, 1709 .len = nontransmitted_profile_len, 1710 .action = params->action, 1711 .link_id = params->link_id, 1712 }; 1713 1714 _ieee802_11_parse_elems_full(&sub, elems, NULL); 1715 } 1716 1717 ieee80211_mle_parse_link(elems, params); 1718 1719 if (elems->tim && !elems->parse_error) { 1720 const struct ieee80211_tim_ie *tim_ie = elems->tim; 1721 1722 elems->dtim_period = tim_ie->dtim_period; 1723 elems->dtim_count = tim_ie->dtim_count; 1724 } 1725 1726 /* Override DTIM period and count if needed */ 1727 if (elems->bssid_index && 1728 elems->bssid_index_len >= 1729 offsetofend(struct ieee80211_bssid_index, dtim_period)) 1730 elems->dtim_period = elems->bssid_index->dtim_period; 1731 1732 if (elems->bssid_index && 1733 elems->bssid_index_len >= 1734 offsetofend(struct ieee80211_bssid_index, dtim_count)) 1735 elems->dtim_count = elems->bssid_index->dtim_count; 1736 1737 return elems; 1738 } 1739 EXPORT_SYMBOL_IF_KUNIT(ieee802_11_parse_elems_full); 1740 1741 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1742 struct ieee80211_tx_queue_params 1743 *qparam, int ac) 1744 { 1745 struct ieee80211_chanctx_conf *chanctx_conf; 1746 const struct ieee80211_reg_rule *rrule; 1747 const struct ieee80211_wmm_ac *wmm_ac; 1748 u16 center_freq = 0; 1749 1750 if (sdata->vif.type != NL80211_IFTYPE_AP && 1751 sdata->vif.type != NL80211_IFTYPE_STATION) 1752 return; 1753 1754 rcu_read_lock(); 1755 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 1756 if (chanctx_conf) 1757 center_freq = chanctx_conf->def.chan->center_freq; 1758 1759 if (!center_freq) { 1760 rcu_read_unlock(); 1761 return; 1762 } 1763 1764 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 1765 1766 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 1767 rcu_read_unlock(); 1768 return; 1769 } 1770 1771 if (sdata->vif.type == NL80211_IFTYPE_AP) 1772 wmm_ac = &rrule->wmm_rule.ap[ac]; 1773 else 1774 wmm_ac = &rrule->wmm_rule.client[ac]; 1775 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1776 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1777 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1778 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1779 rcu_read_unlock(); 1780 } 1781 1782 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1783 bool bss_notify, bool enable_qos) 1784 { 1785 struct ieee80211_sub_if_data *sdata = link->sdata; 1786 struct ieee80211_local *local = sdata->local; 1787 struct ieee80211_tx_queue_params qparam; 1788 struct ieee80211_chanctx_conf *chanctx_conf; 1789 int ac; 1790 bool use_11b; 1791 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1792 int aCWmin, aCWmax; 1793 1794 if (!local->ops->conf_tx) 1795 return; 1796 1797 if (local->hw.queues < IEEE80211_NUM_ACS) 1798 return; 1799 1800 memset(&qparam, 0, sizeof(qparam)); 1801 1802 rcu_read_lock(); 1803 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1804 use_11b = (chanctx_conf && 1805 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1806 !link->operating_11g_mode; 1807 rcu_read_unlock(); 1808 1809 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1810 1811 /* Set defaults according to 802.11-2007 Table 7-37 */ 1812 aCWmax = 1023; 1813 if (use_11b) 1814 aCWmin = 31; 1815 else 1816 aCWmin = 15; 1817 1818 /* Confiure old 802.11b/g medium access rules. */ 1819 qparam.cw_max = aCWmax; 1820 qparam.cw_min = aCWmin; 1821 qparam.txop = 0; 1822 qparam.aifs = 2; 1823 1824 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1825 /* Update if QoS is enabled. */ 1826 if (enable_qos) { 1827 switch (ac) { 1828 case IEEE80211_AC_BK: 1829 qparam.cw_max = aCWmax; 1830 qparam.cw_min = aCWmin; 1831 qparam.txop = 0; 1832 if (is_ocb) 1833 qparam.aifs = 9; 1834 else 1835 qparam.aifs = 7; 1836 break; 1837 /* never happens but let's not leave undefined */ 1838 default: 1839 case IEEE80211_AC_BE: 1840 qparam.cw_max = aCWmax; 1841 qparam.cw_min = aCWmin; 1842 qparam.txop = 0; 1843 if (is_ocb) 1844 qparam.aifs = 6; 1845 else 1846 qparam.aifs = 3; 1847 break; 1848 case IEEE80211_AC_VI: 1849 qparam.cw_max = aCWmin; 1850 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1851 if (is_ocb) 1852 qparam.txop = 0; 1853 else if (use_11b) 1854 qparam.txop = 6016/32; 1855 else 1856 qparam.txop = 3008/32; 1857 1858 if (is_ocb) 1859 qparam.aifs = 3; 1860 else 1861 qparam.aifs = 2; 1862 break; 1863 case IEEE80211_AC_VO: 1864 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1865 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1866 if (is_ocb) 1867 qparam.txop = 0; 1868 else if (use_11b) 1869 qparam.txop = 3264/32; 1870 else 1871 qparam.txop = 1504/32; 1872 qparam.aifs = 2; 1873 break; 1874 } 1875 } 1876 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1877 1878 qparam.uapsd = false; 1879 1880 link->tx_conf[ac] = qparam; 1881 drv_conf_tx(local, link, ac, &qparam); 1882 } 1883 1884 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1885 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1886 sdata->vif.type != NL80211_IFTYPE_NAN) { 1887 link->conf->qos = enable_qos; 1888 if (bss_notify) 1889 ieee80211_link_info_change_notify(sdata, link, 1890 BSS_CHANGED_QOS); 1891 } 1892 } 1893 1894 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1895 u16 transaction, u16 auth_alg, u16 status, 1896 const u8 *extra, size_t extra_len, const u8 *da, 1897 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1898 u32 tx_flags) 1899 { 1900 struct ieee80211_local *local = sdata->local; 1901 struct sk_buff *skb; 1902 struct ieee80211_mgmt *mgmt; 1903 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1904 struct { 1905 u8 id; 1906 u8 len; 1907 u8 ext_id; 1908 struct ieee80211_multi_link_elem ml; 1909 struct ieee80211_mle_basic_common_info basic; 1910 } __packed mle = { 1911 .id = WLAN_EID_EXTENSION, 1912 .len = sizeof(mle) - 2, 1913 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1914 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1915 .basic.len = sizeof(mle.basic), 1916 }; 1917 int err; 1918 1919 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1920 1921 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1922 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1923 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1924 multi_link * sizeof(mle)); 1925 if (!skb) 1926 return; 1927 1928 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1929 1930 mgmt = skb_put_zero(skb, 24 + 6); 1931 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1932 IEEE80211_STYPE_AUTH); 1933 memcpy(mgmt->da, da, ETH_ALEN); 1934 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1935 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1936 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1937 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1938 mgmt->u.auth.status_code = cpu_to_le16(status); 1939 if (extra) 1940 skb_put_data(skb, extra, extra_len); 1941 if (multi_link) 1942 skb_put_data(skb, &mle, sizeof(mle)); 1943 1944 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1945 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1946 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1947 if (WARN_ON(err)) { 1948 kfree_skb(skb); 1949 return; 1950 } 1951 } 1952 1953 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1954 tx_flags; 1955 ieee80211_tx_skb(sdata, skb); 1956 } 1957 1958 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1959 const u8 *da, const u8 *bssid, 1960 u16 stype, u16 reason, 1961 bool send_frame, u8 *frame_buf) 1962 { 1963 struct ieee80211_local *local = sdata->local; 1964 struct sk_buff *skb; 1965 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1966 1967 /* build frame */ 1968 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1969 mgmt->duration = 0; /* initialize only */ 1970 mgmt->seq_ctrl = 0; /* initialize only */ 1971 memcpy(mgmt->da, da, ETH_ALEN); 1972 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1973 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1974 /* u.deauth.reason_code == u.disassoc.reason_code */ 1975 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1976 1977 if (send_frame) { 1978 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1979 IEEE80211_DEAUTH_FRAME_LEN); 1980 if (!skb) 1981 return; 1982 1983 skb_reserve(skb, local->hw.extra_tx_headroom); 1984 1985 /* copy in frame */ 1986 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1987 1988 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1989 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1990 IEEE80211_SKB_CB(skb)->flags |= 1991 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1992 1993 ieee80211_tx_skb(sdata, skb); 1994 } 1995 } 1996 1997 u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end) 1998 { 1999 if ((end - pos) < 5) 2000 return pos; 2001 2002 *pos++ = WLAN_EID_EXTENSION; 2003 *pos++ = 1 + sizeof(cap); 2004 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA; 2005 memcpy(pos, &cap, sizeof(cap)); 2006 2007 return pos + 2; 2008 } 2009 2010 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata, 2011 u8 *buffer, size_t buffer_len, 2012 const u8 *ie, size_t ie_len, 2013 enum nl80211_band band, 2014 u32 rate_mask, 2015 struct cfg80211_chan_def *chandef, 2016 size_t *offset, u32 flags) 2017 { 2018 struct ieee80211_local *local = sdata->local; 2019 struct ieee80211_supported_band *sband; 2020 const struct ieee80211_sta_he_cap *he_cap; 2021 const struct ieee80211_sta_eht_cap *eht_cap; 2022 u8 *pos = buffer, *end = buffer + buffer_len; 2023 size_t noffset; 2024 int supp_rates_len, i; 2025 u8 rates[32]; 2026 int num_rates; 2027 int ext_rates_len; 2028 u32 rate_flags; 2029 bool have_80mhz = false; 2030 2031 *offset = 0; 2032 2033 sband = local->hw.wiphy->bands[band]; 2034 if (WARN_ON_ONCE(!sband)) 2035 return 0; 2036 2037 rate_flags = ieee80211_chandef_rate_flags(chandef); 2038 2039 /* For direct scan add S1G IE and consider its override bits */ 2040 if (band == NL80211_BAND_S1GHZ) { 2041 if (end - pos < 2 + sizeof(struct ieee80211_s1g_cap)) 2042 goto out_err; 2043 pos = ieee80211_ie_build_s1g_cap(pos, &sband->s1g_cap); 2044 goto done; 2045 } 2046 2047 num_rates = 0; 2048 for (i = 0; i < sband->n_bitrates; i++) { 2049 if ((BIT(i) & rate_mask) == 0) 2050 continue; /* skip rate */ 2051 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 2052 continue; 2053 2054 rates[num_rates++] = 2055 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 2056 } 2057 2058 supp_rates_len = min_t(int, num_rates, 8); 2059 2060 if (end - pos < 2 + supp_rates_len) 2061 goto out_err; 2062 *pos++ = WLAN_EID_SUPP_RATES; 2063 *pos++ = supp_rates_len; 2064 memcpy(pos, rates, supp_rates_len); 2065 pos += supp_rates_len; 2066 2067 /* insert "request information" if in custom IEs */ 2068 if (ie && ie_len) { 2069 static const u8 before_extrates[] = { 2070 WLAN_EID_SSID, 2071 WLAN_EID_SUPP_RATES, 2072 WLAN_EID_REQUEST, 2073 }; 2074 noffset = ieee80211_ie_split(ie, ie_len, 2075 before_extrates, 2076 ARRAY_SIZE(before_extrates), 2077 *offset); 2078 if (end - pos < noffset - *offset) 2079 goto out_err; 2080 memcpy(pos, ie + *offset, noffset - *offset); 2081 pos += noffset - *offset; 2082 *offset = noffset; 2083 } 2084 2085 ext_rates_len = num_rates - supp_rates_len; 2086 if (ext_rates_len > 0) { 2087 if (end - pos < 2 + ext_rates_len) 2088 goto out_err; 2089 *pos++ = WLAN_EID_EXT_SUPP_RATES; 2090 *pos++ = ext_rates_len; 2091 memcpy(pos, rates + supp_rates_len, ext_rates_len); 2092 pos += ext_rates_len; 2093 } 2094 2095 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 2096 if (end - pos < 3) 2097 goto out_err; 2098 *pos++ = WLAN_EID_DS_PARAMS; 2099 *pos++ = 1; 2100 *pos++ = ieee80211_frequency_to_channel( 2101 chandef->chan->center_freq); 2102 } 2103 2104 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 2105 goto done; 2106 2107 /* insert custom IEs that go before HT */ 2108 if (ie && ie_len) { 2109 static const u8 before_ht[] = { 2110 /* 2111 * no need to list the ones split off already 2112 * (or generated here) 2113 */ 2114 WLAN_EID_DS_PARAMS, 2115 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 2116 }; 2117 noffset = ieee80211_ie_split(ie, ie_len, 2118 before_ht, ARRAY_SIZE(before_ht), 2119 *offset); 2120 if (end - pos < noffset - *offset) 2121 goto out_err; 2122 memcpy(pos, ie + *offset, noffset - *offset); 2123 pos += noffset - *offset; 2124 *offset = noffset; 2125 } 2126 2127 if (sband->ht_cap.ht_supported) { 2128 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 2129 goto out_err; 2130 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 2131 sband->ht_cap.cap); 2132 } 2133 2134 /* insert custom IEs that go before VHT */ 2135 if (ie && ie_len) { 2136 static const u8 before_vht[] = { 2137 /* 2138 * no need to list the ones split off already 2139 * (or generated here) 2140 */ 2141 WLAN_EID_BSS_COEX_2040, 2142 WLAN_EID_EXT_CAPABILITY, 2143 WLAN_EID_SSID_LIST, 2144 WLAN_EID_CHANNEL_USAGE, 2145 WLAN_EID_INTERWORKING, 2146 WLAN_EID_MESH_ID, 2147 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 2148 }; 2149 noffset = ieee80211_ie_split(ie, ie_len, 2150 before_vht, ARRAY_SIZE(before_vht), 2151 *offset); 2152 if (end - pos < noffset - *offset) 2153 goto out_err; 2154 memcpy(pos, ie + *offset, noffset - *offset); 2155 pos += noffset - *offset; 2156 *offset = noffset; 2157 } 2158 2159 /* Check if any channel in this sband supports at least 80 MHz */ 2160 for (i = 0; i < sband->n_channels; i++) { 2161 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 2162 IEEE80211_CHAN_NO_80MHZ)) 2163 continue; 2164 2165 have_80mhz = true; 2166 break; 2167 } 2168 2169 if (sband->vht_cap.vht_supported && have_80mhz) { 2170 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 2171 goto out_err; 2172 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 2173 sband->vht_cap.cap); 2174 } 2175 2176 /* insert custom IEs that go before HE */ 2177 if (ie && ie_len) { 2178 static const u8 before_he[] = { 2179 /* 2180 * no need to list the ones split off before VHT 2181 * or generated here 2182 */ 2183 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 2184 WLAN_EID_AP_CSN, 2185 /* TODO: add 11ah/11aj/11ak elements */ 2186 }; 2187 noffset = ieee80211_ie_split(ie, ie_len, 2188 before_he, ARRAY_SIZE(before_he), 2189 *offset); 2190 if (end - pos < noffset - *offset) 2191 goto out_err; 2192 memcpy(pos, ie + *offset, noffset - *offset); 2193 pos += noffset - *offset; 2194 *offset = noffset; 2195 } 2196 2197 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2198 if (he_cap && 2199 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 2200 IEEE80211_CHAN_NO_HE)) { 2201 pos = ieee80211_ie_build_he_cap(NULL, he_cap, pos, end); 2202 if (!pos) 2203 goto out_err; 2204 } 2205 2206 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 2207 2208 if (eht_cap && 2209 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 2210 IEEE80211_CHAN_NO_HE | 2211 IEEE80211_CHAN_NO_EHT)) { 2212 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end, 2213 sdata->vif.type == NL80211_IFTYPE_AP); 2214 if (!pos) 2215 goto out_err; 2216 } 2217 2218 if (cfg80211_any_usable_channels(local->hw.wiphy, 2219 BIT(NL80211_BAND_6GHZ), 2220 IEEE80211_CHAN_NO_HE)) { 2221 struct ieee80211_supported_band *sband6; 2222 2223 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2224 he_cap = ieee80211_get_he_iftype_cap_vif(sband6, &sdata->vif); 2225 2226 if (he_cap) { 2227 enum nl80211_iftype iftype = 2228 ieee80211_vif_type_p2p(&sdata->vif); 2229 __le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype); 2230 2231 pos = ieee80211_write_he_6ghz_cap(pos, cap, end); 2232 } 2233 } 2234 2235 /* 2236 * If adding more here, adjust code in main.c 2237 * that calculates local->scan_ies_len. 2238 */ 2239 2240 return pos - buffer; 2241 out_err: 2242 WARN_ONCE(1, "not enough space for preq IEs\n"); 2243 done: 2244 return pos - buffer; 2245 } 2246 2247 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2248 size_t buffer_len, 2249 struct ieee80211_scan_ies *ie_desc, 2250 const u8 *ie, size_t ie_len, 2251 u8 bands_used, u32 *rate_masks, 2252 struct cfg80211_chan_def *chandef, 2253 u32 flags) 2254 { 2255 size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 2256 int i; 2257 2258 memset(ie_desc, 0, sizeof(*ie_desc)); 2259 2260 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2261 if (bands_used & BIT(i)) { 2262 pos += ieee80211_build_preq_ies_band(sdata, 2263 buffer + pos, 2264 buffer_len - pos, 2265 ie, ie_len, i, 2266 rate_masks[i], 2267 chandef, 2268 &custom_ie_offset, 2269 flags); 2270 ie_desc->ies[i] = buffer + old_pos; 2271 ie_desc->len[i] = pos - old_pos; 2272 old_pos = pos; 2273 } 2274 } 2275 2276 /* add any remaining custom IEs */ 2277 if (ie && ie_len) { 2278 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 2279 "not enough space for preq custom IEs\n")) 2280 return pos; 2281 memcpy(buffer + pos, ie + custom_ie_offset, 2282 ie_len - custom_ie_offset); 2283 ie_desc->common_ies = buffer + pos; 2284 ie_desc->common_ie_len = ie_len - custom_ie_offset; 2285 pos += ie_len - custom_ie_offset; 2286 } 2287 2288 return pos; 2289 }; 2290 2291 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2292 const u8 *src, const u8 *dst, 2293 u32 ratemask, 2294 struct ieee80211_channel *chan, 2295 const u8 *ssid, size_t ssid_len, 2296 const u8 *ie, size_t ie_len, 2297 u32 flags) 2298 { 2299 struct ieee80211_local *local = sdata->local; 2300 struct cfg80211_chan_def chandef; 2301 struct sk_buff *skb; 2302 struct ieee80211_mgmt *mgmt; 2303 int ies_len; 2304 u32 rate_masks[NUM_NL80211_BANDS] = {}; 2305 struct ieee80211_scan_ies dummy_ie_desc; 2306 2307 /* 2308 * Do not send DS Channel parameter for directed probe requests 2309 * in order to maximize the chance that we get a response. Some 2310 * badly-behaved APs don't respond when this parameter is included. 2311 */ 2312 chandef.width = sdata->vif.bss_conf.chandef.width; 2313 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 2314 chandef.chan = NULL; 2315 else 2316 chandef.chan = chan; 2317 2318 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 2319 local->scan_ies_len + ie_len); 2320 if (!skb) 2321 return NULL; 2322 2323 rate_masks[chan->band] = ratemask; 2324 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb), 2325 skb_tailroom(skb), &dummy_ie_desc, 2326 ie, ie_len, BIT(chan->band), 2327 rate_masks, &chandef, flags); 2328 skb_put(skb, ies_len); 2329 2330 if (dst) { 2331 mgmt = (struct ieee80211_mgmt *) skb->data; 2332 memcpy(mgmt->da, dst, ETH_ALEN); 2333 memcpy(mgmt->bssid, dst, ETH_ALEN); 2334 } 2335 2336 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 2337 2338 return skb; 2339 } 2340 2341 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2342 struct ieee802_11_elems *elems, 2343 enum nl80211_band band, u32 *basic_rates) 2344 { 2345 struct ieee80211_supported_band *sband; 2346 size_t num_rates; 2347 u32 supp_rates, rate_flags; 2348 int i, j; 2349 2350 sband = sdata->local->hw.wiphy->bands[band]; 2351 if (WARN_ON(!sband)) 2352 return 1; 2353 2354 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 2355 2356 num_rates = sband->n_bitrates; 2357 supp_rates = 0; 2358 for (i = 0; i < elems->supp_rates_len + 2359 elems->ext_supp_rates_len; i++) { 2360 u8 rate = 0; 2361 int own_rate; 2362 bool is_basic; 2363 if (i < elems->supp_rates_len) 2364 rate = elems->supp_rates[i]; 2365 else if (elems->ext_supp_rates) 2366 rate = elems->ext_supp_rates 2367 [i - elems->supp_rates_len]; 2368 own_rate = 5 * (rate & 0x7f); 2369 is_basic = !!(rate & 0x80); 2370 2371 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 2372 continue; 2373 2374 for (j = 0; j < num_rates; j++) { 2375 int brate; 2376 if ((rate_flags & sband->bitrates[j].flags) 2377 != rate_flags) 2378 continue; 2379 2380 brate = sband->bitrates[j].bitrate; 2381 2382 if (brate == own_rate) { 2383 supp_rates |= BIT(j); 2384 if (basic_rates && is_basic) 2385 *basic_rates |= BIT(j); 2386 } 2387 } 2388 } 2389 return supp_rates; 2390 } 2391 2392 void ieee80211_stop_device(struct ieee80211_local *local) 2393 { 2394 ieee80211_led_radio(local, false); 2395 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 2396 2397 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 2398 2399 flush_workqueue(local->workqueue); 2400 wiphy_work_flush(local->hw.wiphy, NULL); 2401 drv_stop(local); 2402 } 2403 2404 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 2405 bool aborted) 2406 { 2407 /* It's possible that we don't handle the scan completion in 2408 * time during suspend, so if it's still marked as completed 2409 * here, queue the work and flush it to clean things up. 2410 * Instead of calling the worker function directly here, we 2411 * really queue it to avoid potential races with other flows 2412 * scheduling the same work. 2413 */ 2414 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 2415 /* If coming from reconfiguration failure, abort the scan so 2416 * we don't attempt to continue a partial HW scan - which is 2417 * possible otherwise if (e.g.) the 2.4 GHz portion was the 2418 * completed scan, and a 5 GHz portion is still pending. 2419 */ 2420 if (aborted) 2421 set_bit(SCAN_ABORTED, &local->scanning); 2422 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 2423 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 2424 } 2425 } 2426 2427 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 2428 { 2429 struct ieee80211_sub_if_data *sdata; 2430 struct ieee80211_chanctx *ctx; 2431 2432 lockdep_assert_wiphy(local->hw.wiphy); 2433 2434 /* 2435 * We get here if during resume the device can't be restarted properly. 2436 * We might also get here if this happens during HW reset, which is a 2437 * slightly different situation and we need to drop all connections in 2438 * the latter case. 2439 * 2440 * Ask cfg80211 to turn off all interfaces, this will result in more 2441 * warnings but at least we'll then get into a clean stopped state. 2442 */ 2443 2444 local->resuming = false; 2445 local->suspended = false; 2446 local->in_reconfig = false; 2447 local->reconfig_failure = true; 2448 2449 ieee80211_flush_completed_scan(local, true); 2450 2451 /* scheduled scan clearly can't be running any more, but tell 2452 * cfg80211 and clear local state 2453 */ 2454 ieee80211_sched_scan_end(local); 2455 2456 list_for_each_entry(sdata, &local->interfaces, list) 2457 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 2458 2459 /* Mark channel contexts as not being in the driver any more to avoid 2460 * removing them from the driver during the shutdown process... 2461 */ 2462 list_for_each_entry(ctx, &local->chanctx_list, list) 2463 ctx->driver_present = false; 2464 } 2465 2466 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 2467 struct ieee80211_sub_if_data *sdata, 2468 struct ieee80211_link_data *link) 2469 { 2470 struct ieee80211_chanctx_conf *conf; 2471 struct ieee80211_chanctx *ctx; 2472 2473 lockdep_assert_wiphy(local->hw.wiphy); 2474 2475 if (!local->use_chanctx) 2476 return; 2477 2478 conf = rcu_dereference_protected(link->conf->chanctx_conf, 2479 lockdep_is_held(&local->hw.wiphy->mtx)); 2480 if (conf) { 2481 ctx = container_of(conf, struct ieee80211_chanctx, conf); 2482 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 2483 } 2484 } 2485 2486 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 2487 { 2488 struct ieee80211_local *local = sdata->local; 2489 struct sta_info *sta; 2490 2491 lockdep_assert_wiphy(local->hw.wiphy); 2492 2493 /* add STAs back */ 2494 list_for_each_entry(sta, &local->sta_list, list) { 2495 enum ieee80211_sta_state state; 2496 2497 if (!sta->uploaded || sta->sdata != sdata) 2498 continue; 2499 2500 for (state = IEEE80211_STA_NOTEXIST; 2501 state < sta->sta_state; state++) 2502 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 2503 state + 1)); 2504 } 2505 } 2506 2507 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 2508 { 2509 struct cfg80211_nan_func *func, **funcs; 2510 int res, id, i = 0; 2511 2512 res = drv_start_nan(sdata->local, sdata, 2513 &sdata->u.nan.conf); 2514 if (WARN_ON(res)) 2515 return res; 2516 2517 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 2518 sizeof(*funcs), 2519 GFP_KERNEL); 2520 if (!funcs) 2521 return -ENOMEM; 2522 2523 /* Add all the functions: 2524 * This is a little bit ugly. We need to call a potentially sleeping 2525 * callback for each NAN function, so we can't hold the spinlock. 2526 */ 2527 spin_lock_bh(&sdata->u.nan.func_lock); 2528 2529 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 2530 funcs[i++] = func; 2531 2532 spin_unlock_bh(&sdata->u.nan.func_lock); 2533 2534 for (i = 0; funcs[i]; i++) { 2535 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 2536 if (WARN_ON(res)) 2537 ieee80211_nan_func_terminated(&sdata->vif, 2538 funcs[i]->instance_id, 2539 NL80211_NAN_FUNC_TERM_REASON_ERROR, 2540 GFP_KERNEL); 2541 } 2542 2543 kfree(funcs); 2544 2545 return 0; 2546 } 2547 2548 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 2549 struct ieee80211_sub_if_data *sdata, 2550 u64 changed) 2551 { 2552 int link_id; 2553 2554 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 2555 struct ieee80211_link_data *link; 2556 2557 if (!(sdata->vif.active_links & BIT(link_id))) 2558 continue; 2559 2560 link = sdata_dereference(sdata->link[link_id], sdata); 2561 if (!link) 2562 continue; 2563 2564 if (rcu_access_pointer(link->u.ap.beacon)) 2565 drv_start_ap(local, sdata, link->conf); 2566 2567 if (!link->conf->enable_beacon) 2568 continue; 2569 2570 changed |= BSS_CHANGED_BEACON | 2571 BSS_CHANGED_BEACON_ENABLED; 2572 2573 ieee80211_link_info_change_notify(sdata, link, changed); 2574 } 2575 } 2576 2577 int ieee80211_reconfig(struct ieee80211_local *local) 2578 { 2579 struct ieee80211_hw *hw = &local->hw; 2580 struct ieee80211_sub_if_data *sdata; 2581 struct ieee80211_chanctx *ctx; 2582 struct sta_info *sta; 2583 int res, i; 2584 bool reconfig_due_to_wowlan = false; 2585 struct ieee80211_sub_if_data *sched_scan_sdata; 2586 struct cfg80211_sched_scan_request *sched_scan_req; 2587 bool sched_scan_stopped = false; 2588 bool suspended = local->suspended; 2589 bool in_reconfig = false; 2590 2591 lockdep_assert_wiphy(local->hw.wiphy); 2592 2593 /* nothing to do if HW shouldn't run */ 2594 if (!local->open_count) 2595 goto wake_up; 2596 2597 #ifdef CONFIG_PM 2598 if (suspended) 2599 local->resuming = true; 2600 2601 if (local->wowlan) { 2602 /* 2603 * In the wowlan case, both mac80211 and the device 2604 * are functional when the resume op is called, so 2605 * clear local->suspended so the device could operate 2606 * normally (e.g. pass rx frames). 2607 */ 2608 local->suspended = false; 2609 res = drv_resume(local); 2610 local->wowlan = false; 2611 if (res < 0) { 2612 local->resuming = false; 2613 return res; 2614 } 2615 if (res == 0) 2616 goto wake_up; 2617 WARN_ON(res > 1); 2618 /* 2619 * res is 1, which means the driver requested 2620 * to go through a regular reset on wakeup. 2621 * restore local->suspended in this case. 2622 */ 2623 reconfig_due_to_wowlan = true; 2624 local->suspended = true; 2625 } 2626 #endif 2627 2628 /* 2629 * In case of hw_restart during suspend (without wowlan), 2630 * cancel restart work, as we are reconfiguring the device 2631 * anyway. 2632 * Note that restart_work is scheduled on a frozen workqueue, 2633 * so we can't deadlock in this case. 2634 */ 2635 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 2636 cancel_work_sync(&local->restart_work); 2637 2638 local->started = false; 2639 2640 /* 2641 * Upon resume hardware can sometimes be goofy due to 2642 * various platform / driver / bus issues, so restarting 2643 * the device may at times not work immediately. Propagate 2644 * the error. 2645 */ 2646 res = drv_start(local); 2647 if (res) { 2648 if (suspended) 2649 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 2650 else 2651 WARN(1, "Hardware became unavailable during restart.\n"); 2652 ieee80211_handle_reconfig_failure(local); 2653 return res; 2654 } 2655 2656 /* setup fragmentation threshold */ 2657 drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 2658 2659 /* setup RTS threshold */ 2660 drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 2661 2662 /* reset coverage class */ 2663 drv_set_coverage_class(local, hw->wiphy->coverage_class); 2664 2665 ieee80211_led_radio(local, true); 2666 ieee80211_mod_tpt_led_trig(local, 2667 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 2668 2669 /* add interfaces */ 2670 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 2671 if (sdata) { 2672 /* in HW restart it exists already */ 2673 WARN_ON(local->resuming); 2674 res = drv_add_interface(local, sdata); 2675 if (WARN_ON(res)) { 2676 RCU_INIT_POINTER(local->monitor_sdata, NULL); 2677 synchronize_net(); 2678 kfree(sdata); 2679 } 2680 } 2681 2682 list_for_each_entry(sdata, &local->interfaces, list) { 2683 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2684 sdata->vif.type != NL80211_IFTYPE_MONITOR && 2685 ieee80211_sdata_running(sdata)) { 2686 res = drv_add_interface(local, sdata); 2687 if (WARN_ON(res)) 2688 break; 2689 } 2690 } 2691 2692 /* If adding any of the interfaces failed above, roll back and 2693 * report failure. 2694 */ 2695 if (res) { 2696 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 2697 list) 2698 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2699 sdata->vif.type != NL80211_IFTYPE_MONITOR && 2700 ieee80211_sdata_running(sdata)) 2701 drv_remove_interface(local, sdata); 2702 ieee80211_handle_reconfig_failure(local); 2703 return res; 2704 } 2705 2706 /* add channel contexts */ 2707 if (local->use_chanctx) { 2708 list_for_each_entry(ctx, &local->chanctx_list, list) 2709 if (ctx->replace_state != 2710 IEEE80211_CHANCTX_REPLACES_OTHER) 2711 WARN_ON(drv_add_chanctx(local, ctx)); 2712 2713 sdata = wiphy_dereference(local->hw.wiphy, 2714 local->monitor_sdata); 2715 if (sdata && ieee80211_sdata_running(sdata)) 2716 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 2717 } 2718 2719 /* reconfigure hardware */ 2720 ieee80211_hw_config(local, ~0); 2721 2722 ieee80211_configure_filter(local); 2723 2724 /* Finally also reconfigure all the BSS information */ 2725 list_for_each_entry(sdata, &local->interfaces, list) { 2726 /* common change flags for all interface types - link only */ 2727 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 2728 BSS_CHANGED_ERP_PREAMBLE | 2729 BSS_CHANGED_ERP_SLOT | 2730 BSS_CHANGED_HT | 2731 BSS_CHANGED_BASIC_RATES | 2732 BSS_CHANGED_BEACON_INT | 2733 BSS_CHANGED_BSSID | 2734 BSS_CHANGED_CQM | 2735 BSS_CHANGED_QOS | 2736 BSS_CHANGED_TXPOWER | 2737 BSS_CHANGED_MCAST_RATE; 2738 struct ieee80211_link_data *link = NULL; 2739 unsigned int link_id; 2740 u32 active_links = 0; 2741 2742 if (!ieee80211_sdata_running(sdata)) 2743 continue; 2744 2745 if (ieee80211_vif_is_mld(&sdata->vif)) { 2746 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 2747 [0] = &sdata->vif.bss_conf, 2748 }; 2749 2750 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 2751 /* start with a single active link */ 2752 active_links = sdata->vif.active_links; 2753 link_id = ffs(active_links) - 1; 2754 sdata->vif.active_links = BIT(link_id); 2755 } 2756 2757 drv_change_vif_links(local, sdata, 0, 2758 sdata->vif.active_links, 2759 old); 2760 } 2761 2762 for (link_id = 0; 2763 link_id < ARRAY_SIZE(sdata->vif.link_conf); 2764 link_id++) { 2765 if (ieee80211_vif_is_mld(&sdata->vif) && 2766 !(sdata->vif.active_links & BIT(link_id))) 2767 continue; 2768 2769 link = sdata_dereference(sdata->link[link_id], sdata); 2770 if (!link) 2771 continue; 2772 2773 ieee80211_assign_chanctx(local, sdata, link); 2774 } 2775 2776 switch (sdata->vif.type) { 2777 case NL80211_IFTYPE_AP_VLAN: 2778 case NL80211_IFTYPE_MONITOR: 2779 break; 2780 case NL80211_IFTYPE_ADHOC: 2781 if (sdata->vif.cfg.ibss_joined) 2782 WARN_ON(drv_join_ibss(local, sdata)); 2783 fallthrough; 2784 default: 2785 ieee80211_reconfig_stations(sdata); 2786 fallthrough; 2787 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2788 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2789 drv_conf_tx(local, &sdata->deflink, i, 2790 &sdata->deflink.tx_conf[i]); 2791 break; 2792 } 2793 2794 if (sdata->vif.bss_conf.mu_mimo_owner) 2795 changed |= BSS_CHANGED_MU_GROUPS; 2796 2797 if (!ieee80211_vif_is_mld(&sdata->vif)) 2798 changed |= BSS_CHANGED_IDLE; 2799 2800 switch (sdata->vif.type) { 2801 case NL80211_IFTYPE_STATION: 2802 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2803 changed |= BSS_CHANGED_ASSOC | 2804 BSS_CHANGED_ARP_FILTER | 2805 BSS_CHANGED_PS; 2806 2807 /* Re-send beacon info report to the driver */ 2808 if (sdata->deflink.u.mgd.have_beacon) 2809 changed |= BSS_CHANGED_BEACON_INFO; 2810 2811 if (sdata->vif.bss_conf.max_idle_period || 2812 sdata->vif.bss_conf.protected_keep_alive) 2813 changed |= BSS_CHANGED_KEEP_ALIVE; 2814 2815 if (sdata->vif.bss_conf.eht_puncturing) 2816 changed |= BSS_CHANGED_EHT_PUNCTURING; 2817 2818 ieee80211_bss_info_change_notify(sdata, 2819 changed); 2820 } else if (!WARN_ON(!link)) { 2821 ieee80211_link_info_change_notify(sdata, link, 2822 changed); 2823 changed = BSS_CHANGED_ASSOC | 2824 BSS_CHANGED_IDLE | 2825 BSS_CHANGED_PS | 2826 BSS_CHANGED_ARP_FILTER; 2827 ieee80211_vif_cfg_change_notify(sdata, changed); 2828 } 2829 break; 2830 case NL80211_IFTYPE_OCB: 2831 changed |= BSS_CHANGED_OCB; 2832 ieee80211_bss_info_change_notify(sdata, changed); 2833 break; 2834 case NL80211_IFTYPE_ADHOC: 2835 changed |= BSS_CHANGED_IBSS; 2836 fallthrough; 2837 case NL80211_IFTYPE_AP: 2838 changed |= BSS_CHANGED_P2P_PS; 2839 2840 if (ieee80211_vif_is_mld(&sdata->vif)) 2841 ieee80211_vif_cfg_change_notify(sdata, 2842 BSS_CHANGED_SSID); 2843 else 2844 changed |= BSS_CHANGED_SSID; 2845 2846 if (sdata->vif.bss_conf.ftm_responder == 1 && 2847 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2848 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2849 changed |= BSS_CHANGED_FTM_RESPONDER; 2850 2851 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2852 changed |= BSS_CHANGED_AP_PROBE_RESP; 2853 2854 if (ieee80211_vif_is_mld(&sdata->vif)) { 2855 ieee80211_reconfig_ap_links(local, 2856 sdata, 2857 changed); 2858 break; 2859 } 2860 2861 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2862 drv_start_ap(local, sdata, 2863 sdata->deflink.conf); 2864 } 2865 fallthrough; 2866 case NL80211_IFTYPE_MESH_POINT: 2867 if (sdata->vif.bss_conf.enable_beacon) { 2868 changed |= BSS_CHANGED_BEACON | 2869 BSS_CHANGED_BEACON_ENABLED; 2870 ieee80211_bss_info_change_notify(sdata, changed); 2871 } 2872 break; 2873 case NL80211_IFTYPE_NAN: 2874 res = ieee80211_reconfig_nan(sdata); 2875 if (res < 0) { 2876 ieee80211_handle_reconfig_failure(local); 2877 return res; 2878 } 2879 break; 2880 case NL80211_IFTYPE_AP_VLAN: 2881 case NL80211_IFTYPE_MONITOR: 2882 case NL80211_IFTYPE_P2P_DEVICE: 2883 /* nothing to do */ 2884 break; 2885 case NL80211_IFTYPE_UNSPECIFIED: 2886 case NUM_NL80211_IFTYPES: 2887 case NL80211_IFTYPE_P2P_CLIENT: 2888 case NL80211_IFTYPE_P2P_GO: 2889 case NL80211_IFTYPE_WDS: 2890 WARN_ON(1); 2891 break; 2892 } 2893 2894 if (active_links) 2895 ieee80211_set_active_links(&sdata->vif, active_links); 2896 } 2897 2898 ieee80211_recalc_ps(local); 2899 2900 /* 2901 * The sta might be in psm against the ap (e.g. because 2902 * this was the state before a hw restart), so we 2903 * explicitly send a null packet in order to make sure 2904 * it'll sync against the ap (and get out of psm). 2905 */ 2906 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2907 list_for_each_entry(sdata, &local->interfaces, list) { 2908 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2909 continue; 2910 if (!sdata->u.mgd.associated) 2911 continue; 2912 2913 ieee80211_send_nullfunc(local, sdata, false); 2914 } 2915 } 2916 2917 /* APs are now beaconing, add back stations */ 2918 list_for_each_entry(sdata, &local->interfaces, list) { 2919 if (!ieee80211_sdata_running(sdata)) 2920 continue; 2921 2922 switch (sdata->vif.type) { 2923 case NL80211_IFTYPE_AP_VLAN: 2924 case NL80211_IFTYPE_AP: 2925 ieee80211_reconfig_stations(sdata); 2926 break; 2927 default: 2928 break; 2929 } 2930 } 2931 2932 /* add back keys */ 2933 list_for_each_entry(sdata, &local->interfaces, list) 2934 ieee80211_reenable_keys(sdata); 2935 2936 /* Reconfigure sched scan if it was interrupted by FW restart */ 2937 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2938 lockdep_is_held(&local->hw.wiphy->mtx)); 2939 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2940 lockdep_is_held(&local->hw.wiphy->mtx)); 2941 if (sched_scan_sdata && sched_scan_req) 2942 /* 2943 * Sched scan stopped, but we don't want to report it. Instead, 2944 * we're trying to reschedule. However, if more than one scan 2945 * plan was set, we cannot reschedule since we don't know which 2946 * scan plan was currently running (and some scan plans may have 2947 * already finished). 2948 */ 2949 if (sched_scan_req->n_scan_plans > 1 || 2950 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2951 sched_scan_req)) { 2952 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2953 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2954 sched_scan_stopped = true; 2955 } 2956 2957 if (sched_scan_stopped) 2958 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2959 2960 wake_up: 2961 2962 if (local->monitors == local->open_count && local->monitors > 0) 2963 ieee80211_add_virtual_monitor(local); 2964 2965 /* 2966 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2967 * sessions can be established after a resume. 2968 * 2969 * Also tear down aggregation sessions since reconfiguring 2970 * them in a hardware restart scenario is not easily done 2971 * right now, and the hardware will have lost information 2972 * about the sessions, but we and the AP still think they 2973 * are active. This is really a workaround though. 2974 */ 2975 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2976 list_for_each_entry(sta, &local->sta_list, list) { 2977 if (!local->resuming) 2978 ieee80211_sta_tear_down_BA_sessions( 2979 sta, AGG_STOP_LOCAL_REQUEST); 2980 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2981 } 2982 } 2983 2984 /* 2985 * If this is for hw restart things are still running. 2986 * We may want to change that later, however. 2987 */ 2988 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2989 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2990 2991 if (local->in_reconfig) { 2992 in_reconfig = local->in_reconfig; 2993 local->in_reconfig = false; 2994 barrier(); 2995 2996 /* Restart deferred ROCs */ 2997 ieee80211_start_next_roc(local); 2998 2999 /* Requeue all works */ 3000 list_for_each_entry(sdata, &local->interfaces, list) 3001 wiphy_work_queue(local->hw.wiphy, &sdata->work); 3002 } 3003 3004 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 3005 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 3006 false); 3007 3008 if (in_reconfig) { 3009 list_for_each_entry(sdata, &local->interfaces, list) { 3010 if (!ieee80211_sdata_running(sdata)) 3011 continue; 3012 if (sdata->vif.type == NL80211_IFTYPE_STATION) 3013 ieee80211_sta_restart(sdata); 3014 } 3015 } 3016 3017 if (!suspended) 3018 return 0; 3019 3020 #ifdef CONFIG_PM 3021 /* first set suspended false, then resuming */ 3022 local->suspended = false; 3023 mb(); 3024 local->resuming = false; 3025 3026 ieee80211_flush_completed_scan(local, false); 3027 3028 if (local->open_count && !reconfig_due_to_wowlan) 3029 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 3030 3031 list_for_each_entry(sdata, &local->interfaces, list) { 3032 if (!ieee80211_sdata_running(sdata)) 3033 continue; 3034 if (sdata->vif.type == NL80211_IFTYPE_STATION) 3035 ieee80211_sta_restart(sdata); 3036 } 3037 3038 mod_timer(&local->sta_cleanup, jiffies + 1); 3039 #else 3040 WARN_ON(1); 3041 #endif 3042 3043 return 0; 3044 } 3045 3046 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 3047 { 3048 struct ieee80211_sub_if_data *sdata; 3049 struct ieee80211_local *local; 3050 struct ieee80211_key *key; 3051 3052 if (WARN_ON(!vif)) 3053 return; 3054 3055 sdata = vif_to_sdata(vif); 3056 local = sdata->local; 3057 3058 lockdep_assert_wiphy(local->hw.wiphy); 3059 3060 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 3061 !local->resuming)) 3062 return; 3063 3064 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 3065 !local->in_reconfig)) 3066 return; 3067 3068 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 3069 return; 3070 3071 sdata->flags |= flag; 3072 3073 list_for_each_entry(key, &sdata->key_list, list) 3074 key->flags |= KEY_FLAG_TAINTED; 3075 } 3076 3077 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 3078 { 3079 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 3080 } 3081 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 3082 3083 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 3084 { 3085 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 3086 } 3087 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 3088 3089 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 3090 struct ieee80211_link_data *link) 3091 { 3092 struct ieee80211_local *local = sdata->local; 3093 struct ieee80211_chanctx_conf *chanctx_conf; 3094 struct ieee80211_chanctx *chanctx; 3095 3096 lockdep_assert_wiphy(local->hw.wiphy); 3097 3098 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 3099 lockdep_is_held(&local->hw.wiphy->mtx)); 3100 3101 /* 3102 * This function can be called from a work, thus it may be possible 3103 * that the chanctx_conf is removed (due to a disconnection, for 3104 * example). 3105 * So nothing should be done in such case. 3106 */ 3107 if (!chanctx_conf) 3108 return; 3109 3110 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 3111 ieee80211_recalc_smps_chanctx(local, chanctx); 3112 } 3113 3114 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 3115 int link_id) 3116 { 3117 struct ieee80211_local *local = sdata->local; 3118 struct ieee80211_chanctx_conf *chanctx_conf; 3119 struct ieee80211_chanctx *chanctx; 3120 int i; 3121 3122 lockdep_assert_wiphy(local->hw.wiphy); 3123 3124 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 3125 struct ieee80211_bss_conf *bss_conf; 3126 3127 if (link_id >= 0 && link_id != i) 3128 continue; 3129 3130 rcu_read_lock(); 3131 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 3132 if (!bss_conf) { 3133 rcu_read_unlock(); 3134 continue; 3135 } 3136 3137 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 3138 lockdep_is_held(&local->hw.wiphy->mtx)); 3139 /* 3140 * Since we hold the wiphy mutex (checked above) 3141 * we can take the chanctx_conf pointer out of the 3142 * RCU critical section, it cannot go away without 3143 * the mutex. Just the way we reached it could - in 3144 * theory - go away, but we don't really care and 3145 * it really shouldn't happen anyway. 3146 */ 3147 rcu_read_unlock(); 3148 3149 if (!chanctx_conf) 3150 return; 3151 3152 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 3153 conf); 3154 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL); 3155 } 3156 } 3157 3158 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 3159 { 3160 size_t pos = offset; 3161 3162 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 3163 pos += 2 + ies[pos + 1]; 3164 3165 return pos; 3166 } 3167 3168 u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap) 3169 { 3170 *pos++ = WLAN_EID_S1G_CAPABILITIES; 3171 *pos++ = sizeof(struct ieee80211_s1g_cap); 3172 memset(pos, 0, sizeof(struct ieee80211_s1g_cap)); 3173 3174 memcpy(pos, &s1g_cap->cap, sizeof(s1g_cap->cap)); 3175 pos += sizeof(s1g_cap->cap); 3176 3177 memcpy(pos, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 3178 pos += sizeof(s1g_cap->nss_mcs); 3179 3180 return pos; 3181 } 3182 3183 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 3184 u16 cap) 3185 { 3186 __le16 tmp; 3187 3188 *pos++ = WLAN_EID_HT_CAPABILITY; 3189 *pos++ = sizeof(struct ieee80211_ht_cap); 3190 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 3191 3192 /* capability flags */ 3193 tmp = cpu_to_le16(cap); 3194 memcpy(pos, &tmp, sizeof(u16)); 3195 pos += sizeof(u16); 3196 3197 /* AMPDU parameters */ 3198 *pos++ = ht_cap->ampdu_factor | 3199 (ht_cap->ampdu_density << 3200 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 3201 3202 /* MCS set */ 3203 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 3204 pos += sizeof(ht_cap->mcs); 3205 3206 /* extended capabilities */ 3207 pos += sizeof(__le16); 3208 3209 /* BF capabilities */ 3210 pos += sizeof(__le32); 3211 3212 /* antenna selection */ 3213 pos += sizeof(u8); 3214 3215 return pos; 3216 } 3217 3218 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 3219 u32 cap) 3220 { 3221 __le32 tmp; 3222 3223 *pos++ = WLAN_EID_VHT_CAPABILITY; 3224 *pos++ = sizeof(struct ieee80211_vht_cap); 3225 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 3226 3227 /* capability flags */ 3228 tmp = cpu_to_le32(cap); 3229 memcpy(pos, &tmp, sizeof(u32)); 3230 pos += sizeof(u32); 3231 3232 /* VHT MCS set */ 3233 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 3234 pos += sizeof(vht_cap->vht_mcs); 3235 3236 return pos; 3237 } 3238 3239 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) 3240 { 3241 const struct ieee80211_sta_he_cap *he_cap; 3242 struct ieee80211_supported_band *sband; 3243 u8 n; 3244 3245 sband = ieee80211_get_sband(sdata); 3246 if (!sband) 3247 return 0; 3248 3249 he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 3250 if (!he_cap) 3251 return 0; 3252 3253 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 3254 return 2 + 1 + 3255 sizeof(he_cap->he_cap_elem) + n + 3256 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 3257 he_cap->he_cap_elem.phy_cap_info); 3258 } 3259 3260 u8 *ieee80211_ie_build_he_cap(const struct ieee80211_conn_settings *conn, 3261 const struct ieee80211_sta_he_cap *he_cap, 3262 u8 *pos, u8 *end) 3263 { 3264 struct ieee80211_he_cap_elem elem; 3265 u8 n; 3266 u8 ie_len; 3267 u8 *orig_pos = pos; 3268 3269 if (!conn) 3270 conn = &ieee80211_conn_settings_unlimited; 3271 3272 /* Make sure we have place for the IE */ 3273 /* 3274 * TODO: the 1 added is because this temporarily is under the EXTENSION 3275 * IE. Get rid of it when it moves. 3276 */ 3277 if (!he_cap) 3278 return orig_pos; 3279 3280 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 3281 elem = he_cap->he_cap_elem; 3282 3283 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) 3284 elem.phy_cap_info[0] &= 3285 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 3286 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 3287 3288 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) 3289 elem.phy_cap_info[0] &= 3290 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 3291 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 3292 3293 n = ieee80211_he_mcs_nss_size(&elem); 3294 ie_len = 2 + 1 + 3295 sizeof(he_cap->he_cap_elem) + n + 3296 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 3297 he_cap->he_cap_elem.phy_cap_info); 3298 3299 if ((end - pos) < ie_len) 3300 return orig_pos; 3301 3302 *pos++ = WLAN_EID_EXTENSION; 3303 pos++; /* We'll set the size later below */ 3304 *pos++ = WLAN_EID_EXT_HE_CAPABILITY; 3305 3306 /* Fixed data */ 3307 memcpy(pos, &elem, sizeof(elem)); 3308 pos += sizeof(elem); 3309 3310 memcpy(pos, &he_cap->he_mcs_nss_supp, n); 3311 pos += n; 3312 3313 /* Check if PPE Threshold should be present */ 3314 if ((he_cap->he_cap_elem.phy_cap_info[6] & 3315 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 3316 goto end; 3317 3318 /* 3319 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 3320 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 3321 */ 3322 n = hweight8(he_cap->ppe_thres[0] & 3323 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 3324 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 3325 IEEE80211_PPE_THRES_NSS_POS)); 3326 3327 /* 3328 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 3329 * total size. 3330 */ 3331 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 3332 n = DIV_ROUND_UP(n, 8); 3333 3334 /* Copy PPE Thresholds */ 3335 memcpy(pos, &he_cap->ppe_thres, n); 3336 pos += n; 3337 3338 end: 3339 orig_pos[1] = (pos - orig_pos) - 2; 3340 return pos; 3341 } 3342 3343 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 3344 enum ieee80211_smps_mode smps_mode, 3345 struct sk_buff *skb) 3346 { 3347 struct ieee80211_supported_band *sband; 3348 const struct ieee80211_sband_iftype_data *iftd; 3349 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 3350 u8 *pos; 3351 u16 cap; 3352 3353 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 3354 BIT(NL80211_BAND_6GHZ), 3355 IEEE80211_CHAN_NO_HE)) 3356 return; 3357 3358 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 3359 3360 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 3361 if (!iftd) 3362 return; 3363 3364 /* Check for device HE 6 GHz capability before adding element */ 3365 if (!iftd->he_6ghz_capa.capa) 3366 return; 3367 3368 cap = le16_to_cpu(iftd->he_6ghz_capa.capa); 3369 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS; 3370 3371 switch (smps_mode) { 3372 case IEEE80211_SMPS_AUTOMATIC: 3373 case IEEE80211_SMPS_NUM_MODES: 3374 WARN_ON(1); 3375 fallthrough; 3376 case IEEE80211_SMPS_OFF: 3377 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 3378 IEEE80211_HE_6GHZ_CAP_SM_PS); 3379 break; 3380 case IEEE80211_SMPS_STATIC: 3381 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 3382 IEEE80211_HE_6GHZ_CAP_SM_PS); 3383 break; 3384 case IEEE80211_SMPS_DYNAMIC: 3385 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 3386 IEEE80211_HE_6GHZ_CAP_SM_PS); 3387 break; 3388 } 3389 3390 pos = skb_put(skb, 2 + 1 + sizeof(cap)); 3391 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap), 3392 pos + 2 + 1 + sizeof(cap)); 3393 } 3394 3395 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 3396 const struct cfg80211_chan_def *chandef, 3397 u16 prot_mode, bool rifs_mode) 3398 { 3399 struct ieee80211_ht_operation *ht_oper; 3400 /* Build HT Information */ 3401 *pos++ = WLAN_EID_HT_OPERATION; 3402 *pos++ = sizeof(struct ieee80211_ht_operation); 3403 ht_oper = (struct ieee80211_ht_operation *)pos; 3404 ht_oper->primary_chan = ieee80211_frequency_to_channel( 3405 chandef->chan->center_freq); 3406 switch (chandef->width) { 3407 case NL80211_CHAN_WIDTH_160: 3408 case NL80211_CHAN_WIDTH_80P80: 3409 case NL80211_CHAN_WIDTH_80: 3410 case NL80211_CHAN_WIDTH_40: 3411 if (chandef->center_freq1 > chandef->chan->center_freq) 3412 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3413 else 3414 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3415 break; 3416 case NL80211_CHAN_WIDTH_320: 3417 /* HT information element should not be included on 6GHz */ 3418 WARN_ON(1); 3419 return pos; 3420 default: 3421 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 3422 break; 3423 } 3424 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 3425 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 3426 chandef->width != NL80211_CHAN_WIDTH_20) 3427 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 3428 3429 if (rifs_mode) 3430 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 3431 3432 ht_oper->operation_mode = cpu_to_le16(prot_mode); 3433 ht_oper->stbc_param = 0x0000; 3434 3435 /* It seems that Basic MCS set and Supported MCS set 3436 are identical for the first 10 bytes */ 3437 memset(&ht_oper->basic_set, 0, 16); 3438 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 3439 3440 return pos + sizeof(struct ieee80211_ht_operation); 3441 } 3442 3443 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 3444 const struct cfg80211_chan_def *chandef) 3445 { 3446 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 3447 *pos++ = 3; /* IE length */ 3448 /* New channel width */ 3449 switch (chandef->width) { 3450 case NL80211_CHAN_WIDTH_80: 3451 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 3452 break; 3453 case NL80211_CHAN_WIDTH_160: 3454 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 3455 break; 3456 case NL80211_CHAN_WIDTH_80P80: 3457 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 3458 break; 3459 case NL80211_CHAN_WIDTH_320: 3460 /* The behavior is not defined for 320 MHz channels */ 3461 WARN_ON(1); 3462 fallthrough; 3463 default: 3464 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 3465 } 3466 3467 /* new center frequency segment 0 */ 3468 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 3469 /* new center frequency segment 1 */ 3470 if (chandef->center_freq2) 3471 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 3472 else 3473 *pos++ = 0; 3474 } 3475 3476 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 3477 const struct cfg80211_chan_def *chandef) 3478 { 3479 struct ieee80211_vht_operation *vht_oper; 3480 3481 *pos++ = WLAN_EID_VHT_OPERATION; 3482 *pos++ = sizeof(struct ieee80211_vht_operation); 3483 vht_oper = (struct ieee80211_vht_operation *)pos; 3484 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 3485 chandef->center_freq1); 3486 if (chandef->center_freq2) 3487 vht_oper->center_freq_seg1_idx = 3488 ieee80211_frequency_to_channel(chandef->center_freq2); 3489 else 3490 vht_oper->center_freq_seg1_idx = 0x00; 3491 3492 switch (chandef->width) { 3493 case NL80211_CHAN_WIDTH_160: 3494 /* 3495 * Convert 160 MHz channel width to new style as interop 3496 * workaround. 3497 */ 3498 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 3499 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 3500 if (chandef->chan->center_freq < chandef->center_freq1) 3501 vht_oper->center_freq_seg0_idx -= 8; 3502 else 3503 vht_oper->center_freq_seg0_idx += 8; 3504 break; 3505 case NL80211_CHAN_WIDTH_80P80: 3506 /* 3507 * Convert 80+80 MHz channel width to new style as interop 3508 * workaround. 3509 */ 3510 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 3511 break; 3512 case NL80211_CHAN_WIDTH_80: 3513 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 3514 break; 3515 case NL80211_CHAN_WIDTH_320: 3516 /* VHT information element should not be included on 6GHz */ 3517 WARN_ON(1); 3518 return pos; 3519 default: 3520 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 3521 break; 3522 } 3523 3524 /* don't require special VHT peer rates */ 3525 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 3526 3527 return pos + sizeof(struct ieee80211_vht_operation); 3528 } 3529 3530 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef) 3531 { 3532 struct ieee80211_he_operation *he_oper; 3533 struct ieee80211_he_6ghz_oper *he_6ghz_op; 3534 u32 he_oper_params; 3535 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 3536 3537 if (chandef->chan->band == NL80211_BAND_6GHZ) 3538 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 3539 3540 *pos++ = WLAN_EID_EXTENSION; 3541 *pos++ = ie_len; 3542 *pos++ = WLAN_EID_EXT_HE_OPERATION; 3543 3544 he_oper_params = 0; 3545 he_oper_params |= u32_encode_bits(1023, /* disabled */ 3546 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 3547 he_oper_params |= u32_encode_bits(1, 3548 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 3549 he_oper_params |= u32_encode_bits(1, 3550 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 3551 if (chandef->chan->band == NL80211_BAND_6GHZ) 3552 he_oper_params |= u32_encode_bits(1, 3553 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 3554 3555 he_oper = (struct ieee80211_he_operation *)pos; 3556 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 3557 3558 /* don't require special HE peer rates */ 3559 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 3560 pos += sizeof(struct ieee80211_he_operation); 3561 3562 if (chandef->chan->band != NL80211_BAND_6GHZ) 3563 goto out; 3564 3565 /* TODO add VHT operational */ 3566 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 3567 he_6ghz_op->minrate = 6; /* 6 Mbps */ 3568 he_6ghz_op->primary = 3569 ieee80211_frequency_to_channel(chandef->chan->center_freq); 3570 he_6ghz_op->ccfs0 = 3571 ieee80211_frequency_to_channel(chandef->center_freq1); 3572 if (chandef->center_freq2) 3573 he_6ghz_op->ccfs1 = 3574 ieee80211_frequency_to_channel(chandef->center_freq2); 3575 else 3576 he_6ghz_op->ccfs1 = 0; 3577 3578 switch (chandef->width) { 3579 case NL80211_CHAN_WIDTH_320: 3580 /* 3581 * TODO: mesh operation is not defined over 6GHz 320 MHz 3582 * channels. 3583 */ 3584 WARN_ON(1); 3585 break; 3586 case NL80211_CHAN_WIDTH_160: 3587 /* Convert 160 MHz channel width to new style as interop 3588 * workaround. 3589 */ 3590 he_6ghz_op->control = 3591 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3592 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 3593 if (chandef->chan->center_freq < chandef->center_freq1) 3594 he_6ghz_op->ccfs0 -= 8; 3595 else 3596 he_6ghz_op->ccfs0 += 8; 3597 fallthrough; 3598 case NL80211_CHAN_WIDTH_80P80: 3599 he_6ghz_op->control = 3600 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3601 break; 3602 case NL80211_CHAN_WIDTH_80: 3603 he_6ghz_op->control = 3604 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 3605 break; 3606 case NL80211_CHAN_WIDTH_40: 3607 he_6ghz_op->control = 3608 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 3609 break; 3610 default: 3611 he_6ghz_op->control = 3612 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 3613 break; 3614 } 3615 3616 pos += sizeof(struct ieee80211_he_6ghz_oper); 3617 3618 out: 3619 return pos; 3620 } 3621 3622 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 3623 const struct ieee80211_sta_eht_cap *eht_cap) 3624 3625 { 3626 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 3627 &eht_cap->eht_mcs_nss_supp.only_20mhz; 3628 struct ieee80211_eht_operation *eht_oper; 3629 struct ieee80211_eht_operation_info *eht_oper_info; 3630 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 3631 u8 eht_oper_info_len = 3632 offsetof(struct ieee80211_eht_operation_info, optional); 3633 u8 chan_width = 0; 3634 3635 *pos++ = WLAN_EID_EXTENSION; 3636 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 3637 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 3638 3639 eht_oper = (struct ieee80211_eht_operation *)pos; 3640 3641 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 3642 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 3643 pos += eht_oper_len; 3644 3645 eht_oper_info = 3646 (struct ieee80211_eht_operation_info *)eht_oper->optional; 3647 3648 eht_oper_info->ccfs0 = 3649 ieee80211_frequency_to_channel(chandef->center_freq1); 3650 if (chandef->center_freq2) 3651 eht_oper_info->ccfs1 = 3652 ieee80211_frequency_to_channel(chandef->center_freq2); 3653 else 3654 eht_oper_info->ccfs1 = 0; 3655 3656 switch (chandef->width) { 3657 case NL80211_CHAN_WIDTH_320: 3658 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 3659 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3660 if (chandef->chan->center_freq < chandef->center_freq1) 3661 eht_oper_info->ccfs0 -= 16; 3662 else 3663 eht_oper_info->ccfs0 += 16; 3664 break; 3665 case NL80211_CHAN_WIDTH_160: 3666 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3667 if (chandef->chan->center_freq < chandef->center_freq1) 3668 eht_oper_info->ccfs0 -= 8; 3669 else 3670 eht_oper_info->ccfs0 += 8; 3671 fallthrough; 3672 case NL80211_CHAN_WIDTH_80P80: 3673 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 3674 break; 3675 case NL80211_CHAN_WIDTH_80: 3676 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 3677 break; 3678 case NL80211_CHAN_WIDTH_40: 3679 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 3680 break; 3681 default: 3682 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 3683 break; 3684 } 3685 eht_oper_info->control = chan_width; 3686 pos += eht_oper_info_len; 3687 3688 /* TODO: eht_oper_info->optional */ 3689 3690 return pos; 3691 } 3692 3693 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 3694 struct cfg80211_chan_def *chandef) 3695 { 3696 enum nl80211_channel_type channel_type; 3697 3698 if (!ht_oper) 3699 return false; 3700 3701 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 3702 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 3703 channel_type = NL80211_CHAN_HT20; 3704 break; 3705 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 3706 channel_type = NL80211_CHAN_HT40PLUS; 3707 break; 3708 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 3709 channel_type = NL80211_CHAN_HT40MINUS; 3710 break; 3711 default: 3712 return false; 3713 } 3714 3715 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 3716 return true; 3717 } 3718 3719 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 3720 const struct ieee80211_vht_operation *oper, 3721 const struct ieee80211_ht_operation *htop, 3722 struct cfg80211_chan_def *chandef) 3723 { 3724 struct cfg80211_chan_def new = *chandef; 3725 int cf0, cf1; 3726 int ccfs0, ccfs1, ccfs2; 3727 int ccf0, ccf1; 3728 u32 vht_cap; 3729 bool support_80_80 = false; 3730 bool support_160 = false; 3731 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 3732 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 3733 u8 supp_chwidth = u32_get_bits(vht_cap_info, 3734 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3735 3736 if (!oper || !htop) 3737 return false; 3738 3739 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 3740 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 3741 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 3742 support_80_80 = ((vht_cap & 3743 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 3744 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 3745 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 3746 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 3747 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 3748 ccfs0 = oper->center_freq_seg0_idx; 3749 ccfs1 = oper->center_freq_seg1_idx; 3750 ccfs2 = (le16_to_cpu(htop->operation_mode) & 3751 IEEE80211_HT_OP_MODE_CCFS2_MASK) 3752 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 3753 3754 ccf0 = ccfs0; 3755 3756 /* if not supported, parse as though we didn't understand it */ 3757 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 3758 ext_nss_bw_supp = 0; 3759 3760 /* 3761 * Cf. IEEE 802.11 Table 9-250 3762 * 3763 * We really just consider that because it's inefficient to connect 3764 * at a higher bandwidth than we'll actually be able to use. 3765 */ 3766 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 3767 default: 3768 case 0x00: 3769 ccf1 = 0; 3770 support_160 = false; 3771 support_80_80 = false; 3772 break; 3773 case 0x01: 3774 support_80_80 = false; 3775 fallthrough; 3776 case 0x02: 3777 case 0x03: 3778 ccf1 = ccfs2; 3779 break; 3780 case 0x10: 3781 ccf1 = ccfs1; 3782 break; 3783 case 0x11: 3784 case 0x12: 3785 if (!ccfs1) 3786 ccf1 = ccfs2; 3787 else 3788 ccf1 = ccfs1; 3789 break; 3790 case 0x13: 3791 case 0x20: 3792 case 0x23: 3793 ccf1 = ccfs1; 3794 break; 3795 } 3796 3797 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3798 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3799 3800 switch (oper->chan_width) { 3801 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3802 /* just use HT information directly */ 3803 break; 3804 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3805 new.width = NL80211_CHAN_WIDTH_80; 3806 new.center_freq1 = cf0; 3807 /* If needed, adjust based on the newer interop workaround. */ 3808 if (ccf1) { 3809 unsigned int diff; 3810 3811 diff = abs(ccf1 - ccf0); 3812 if ((diff == 8) && support_160) { 3813 new.width = NL80211_CHAN_WIDTH_160; 3814 new.center_freq1 = cf1; 3815 } else if ((diff > 8) && support_80_80) { 3816 new.width = NL80211_CHAN_WIDTH_80P80; 3817 new.center_freq2 = cf1; 3818 } 3819 } 3820 break; 3821 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3822 /* deprecated encoding */ 3823 new.width = NL80211_CHAN_WIDTH_160; 3824 new.center_freq1 = cf0; 3825 break; 3826 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3827 /* deprecated encoding */ 3828 new.width = NL80211_CHAN_WIDTH_80P80; 3829 new.center_freq1 = cf0; 3830 new.center_freq2 = cf1; 3831 break; 3832 default: 3833 return false; 3834 } 3835 3836 if (!cfg80211_chandef_valid(&new)) 3837 return false; 3838 3839 *chandef = new; 3840 return true; 3841 } 3842 3843 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3844 bool support_160, bool support_320, 3845 struct cfg80211_chan_def *chandef) 3846 { 3847 chandef->center_freq1 = 3848 ieee80211_channel_to_frequency(info->ccfs0, 3849 chandef->chan->band); 3850 3851 switch (u8_get_bits(info->control, 3852 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3853 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3854 chandef->width = NL80211_CHAN_WIDTH_20; 3855 break; 3856 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3857 chandef->width = NL80211_CHAN_WIDTH_40; 3858 break; 3859 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3860 chandef->width = NL80211_CHAN_WIDTH_80; 3861 break; 3862 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3863 if (support_160) { 3864 chandef->width = NL80211_CHAN_WIDTH_160; 3865 chandef->center_freq1 = 3866 ieee80211_channel_to_frequency(info->ccfs1, 3867 chandef->chan->band); 3868 } else { 3869 chandef->width = NL80211_CHAN_WIDTH_80; 3870 } 3871 break; 3872 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3873 if (support_320) { 3874 chandef->width = NL80211_CHAN_WIDTH_320; 3875 chandef->center_freq1 = 3876 ieee80211_channel_to_frequency(info->ccfs1, 3877 chandef->chan->band); 3878 } else if (support_160) { 3879 chandef->width = NL80211_CHAN_WIDTH_160; 3880 } else { 3881 chandef->width = NL80211_CHAN_WIDTH_80; 3882 3883 if (chandef->center_freq1 > chandef->chan->center_freq) 3884 chandef->center_freq1 -= 40; 3885 else 3886 chandef->center_freq1 += 40; 3887 } 3888 break; 3889 } 3890 } 3891 3892 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 3893 const struct ieee80211_he_operation *he_oper, 3894 const struct ieee80211_eht_operation *eht_oper, 3895 struct cfg80211_chan_def *chandef) 3896 { 3897 struct ieee80211_local *local = sdata->local; 3898 struct ieee80211_supported_band *sband; 3899 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 3900 const struct ieee80211_sta_he_cap *he_cap; 3901 const struct ieee80211_sta_eht_cap *eht_cap; 3902 struct cfg80211_chan_def he_chandef = *chandef; 3903 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3904 bool support_80_80, support_160, support_320; 3905 u8 he_phy_cap, eht_phy_cap; 3906 u32 freq; 3907 3908 if (chandef->chan->band != NL80211_BAND_6GHZ) 3909 return true; 3910 3911 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 3912 3913 he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 3914 if (!he_cap) { 3915 sdata_info(sdata, "Missing iftype sband data/HE cap"); 3916 return false; 3917 } 3918 3919 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0]; 3920 support_160 = 3921 he_phy_cap & 3922 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 3923 support_80_80 = 3924 he_phy_cap & 3925 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 3926 3927 if (!he_oper) { 3928 sdata_info(sdata, 3929 "HE is not advertised on (on %d MHz), expect issues\n", 3930 chandef->chan->center_freq); 3931 return false; 3932 } 3933 3934 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); 3935 if (!eht_cap) 3936 eht_oper = NULL; 3937 3938 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3939 if (!he_6ghz_oper) 3940 return false; 3941 3942 /* 3943 * The EHT operation IE does not contain the primary channel so the 3944 * primary channel frequency should be taken from the 6 GHz operation 3945 * information. 3946 */ 3947 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3948 NL80211_BAND_6GHZ); 3949 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq); 3950 3951 if (!eht_oper || 3952 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3953 switch (u8_get_bits(he_6ghz_oper->control, 3954 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3955 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3956 he_chandef.width = NL80211_CHAN_WIDTH_20; 3957 break; 3958 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3959 he_chandef.width = NL80211_CHAN_WIDTH_40; 3960 break; 3961 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3962 he_chandef.width = NL80211_CHAN_WIDTH_80; 3963 break; 3964 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3965 he_chandef.width = NL80211_CHAN_WIDTH_80; 3966 if (!he_6ghz_oper->ccfs1) 3967 break; 3968 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) { 3969 if (support_160) 3970 he_chandef.width = NL80211_CHAN_WIDTH_160; 3971 } else { 3972 if (support_80_80) 3973 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3974 } 3975 break; 3976 } 3977 3978 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3979 he_chandef.center_freq1 = 3980 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3981 NL80211_BAND_6GHZ); 3982 } else { 3983 he_chandef.center_freq1 = 3984 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3985 NL80211_BAND_6GHZ); 3986 if (support_80_80 || support_160) 3987 he_chandef.center_freq2 = 3988 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3989 NL80211_BAND_6GHZ); 3990 } 3991 } else { 3992 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0]; 3993 support_320 = 3994 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 3995 3996 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3997 support_160, support_320, 3998 &he_chandef); 3999 } 4000 4001 if (!cfg80211_chandef_valid(&he_chandef)) { 4002 sdata_info(sdata, 4003 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n", 4004 he_chandef.chan ? he_chandef.chan->center_freq : 0, 4005 he_chandef.width, 4006 he_chandef.center_freq1, 4007 he_chandef.center_freq2); 4008 return false; 4009 } 4010 4011 *chandef = he_chandef; 4012 4013 return true; 4014 } 4015 4016 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 4017 struct cfg80211_chan_def *chandef) 4018 { 4019 u32 oper_freq; 4020 4021 if (!oper) 4022 return false; 4023 4024 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 4025 case IEEE80211_S1G_CHANWIDTH_1MHZ: 4026 chandef->width = NL80211_CHAN_WIDTH_1; 4027 break; 4028 case IEEE80211_S1G_CHANWIDTH_2MHZ: 4029 chandef->width = NL80211_CHAN_WIDTH_2; 4030 break; 4031 case IEEE80211_S1G_CHANWIDTH_4MHZ: 4032 chandef->width = NL80211_CHAN_WIDTH_4; 4033 break; 4034 case IEEE80211_S1G_CHANWIDTH_8MHZ: 4035 chandef->width = NL80211_CHAN_WIDTH_8; 4036 break; 4037 case IEEE80211_S1G_CHANWIDTH_16MHZ: 4038 chandef->width = NL80211_CHAN_WIDTH_16; 4039 break; 4040 default: 4041 return false; 4042 } 4043 4044 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch, 4045 NL80211_BAND_S1GHZ); 4046 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq); 4047 chandef->freq1_offset = oper_freq % 1000; 4048 4049 return true; 4050 } 4051 4052 int ieee80211_parse_bitrates(enum nl80211_chan_width width, 4053 const struct ieee80211_supported_band *sband, 4054 const u8 *srates, int srates_len, u32 *rates) 4055 { 4056 u32 rate_flags = ieee80211_chanwidth_rate_flags(width); 4057 struct ieee80211_rate *br; 4058 int brate, rate, i, j, count = 0; 4059 4060 *rates = 0; 4061 4062 for (i = 0; i < srates_len; i++) { 4063 rate = srates[i] & 0x7f; 4064 4065 for (j = 0; j < sband->n_bitrates; j++) { 4066 br = &sband->bitrates[j]; 4067 if ((rate_flags & br->flags) != rate_flags) 4068 continue; 4069 4070 brate = DIV_ROUND_UP(br->bitrate, 5); 4071 if (brate == rate) { 4072 *rates |= BIT(j); 4073 count++; 4074 break; 4075 } 4076 } 4077 } 4078 return count; 4079 } 4080 4081 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 4082 struct sk_buff *skb, bool need_basic, 4083 enum nl80211_band band) 4084 { 4085 struct ieee80211_local *local = sdata->local; 4086 struct ieee80211_supported_band *sband; 4087 int rate; 4088 u8 i, rates, *pos; 4089 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 4090 u32 rate_flags; 4091 4092 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 4093 sband = local->hw.wiphy->bands[band]; 4094 rates = 0; 4095 for (i = 0; i < sband->n_bitrates; i++) { 4096 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 4097 continue; 4098 rates++; 4099 } 4100 if (rates > 8) 4101 rates = 8; 4102 4103 if (skb_tailroom(skb) < rates + 2) 4104 return -ENOMEM; 4105 4106 pos = skb_put(skb, rates + 2); 4107 *pos++ = WLAN_EID_SUPP_RATES; 4108 *pos++ = rates; 4109 for (i = 0; i < rates; i++) { 4110 u8 basic = 0; 4111 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 4112 continue; 4113 4114 if (need_basic && basic_rates & BIT(i)) 4115 basic = 0x80; 4116 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 4117 *pos++ = basic | (u8) rate; 4118 } 4119 4120 return 0; 4121 } 4122 4123 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 4124 struct sk_buff *skb, bool need_basic, 4125 enum nl80211_band band) 4126 { 4127 struct ieee80211_local *local = sdata->local; 4128 struct ieee80211_supported_band *sband; 4129 int rate; 4130 u8 i, exrates, *pos; 4131 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 4132 u32 rate_flags; 4133 4134 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 4135 4136 sband = local->hw.wiphy->bands[band]; 4137 exrates = 0; 4138 for (i = 0; i < sband->n_bitrates; i++) { 4139 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 4140 continue; 4141 exrates++; 4142 } 4143 4144 if (exrates > 8) 4145 exrates -= 8; 4146 else 4147 exrates = 0; 4148 4149 if (skb_tailroom(skb) < exrates + 2) 4150 return -ENOMEM; 4151 4152 if (exrates) { 4153 pos = skb_put(skb, exrates + 2); 4154 *pos++ = WLAN_EID_EXT_SUPP_RATES; 4155 *pos++ = exrates; 4156 for (i = 8; i < sband->n_bitrates; i++) { 4157 u8 basic = 0; 4158 if ((rate_flags & sband->bitrates[i].flags) 4159 != rate_flags) 4160 continue; 4161 if (need_basic && basic_rates & BIT(i)) 4162 basic = 0x80; 4163 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 4164 *pos++ = basic | (u8) rate; 4165 } 4166 } 4167 return 0; 4168 } 4169 4170 int ieee80211_ave_rssi(struct ieee80211_vif *vif) 4171 { 4172 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4173 4174 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 4175 return 0; 4176 4177 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal); 4178 } 4179 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 4180 4181 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 4182 { 4183 if (!mcs) 4184 return 1; 4185 4186 /* TODO: consider rx_highest */ 4187 4188 if (mcs->rx_mask[3]) 4189 return 4; 4190 if (mcs->rx_mask[2]) 4191 return 3; 4192 if (mcs->rx_mask[1]) 4193 return 2; 4194 return 1; 4195 } 4196 4197 /** 4198 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 4199 * @local: mac80211 hw info struct 4200 * @status: RX status 4201 * @mpdu_len: total MPDU length (including FCS) 4202 * @mpdu_offset: offset into MPDU to calculate timestamp at 4203 * 4204 * This function calculates the RX timestamp at the given MPDU offset, taking 4205 * into account what the RX timestamp was. An offset of 0 will just normalize 4206 * the timestamp to TSF at beginning of MPDU reception. 4207 * 4208 * Returns: the calculated timestamp 4209 */ 4210 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 4211 struct ieee80211_rx_status *status, 4212 unsigned int mpdu_len, 4213 unsigned int mpdu_offset) 4214 { 4215 u64 ts = status->mactime; 4216 bool mactime_plcp_start; 4217 struct rate_info ri; 4218 u16 rate; 4219 u8 n_ltf; 4220 4221 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 4222 return 0; 4223 4224 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 4225 RX_FLAG_MACTIME_PLCP_START; 4226 4227 memset(&ri, 0, sizeof(ri)); 4228 4229 ri.bw = status->bw; 4230 4231 /* Fill cfg80211 rate info */ 4232 switch (status->encoding) { 4233 case RX_ENC_EHT: 4234 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 4235 ri.mcs = status->rate_idx; 4236 ri.nss = status->nss; 4237 ri.eht_ru_alloc = status->eht.ru; 4238 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 4239 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 4240 /* TODO/FIXME: is this right? handle other PPDUs */ 4241 if (mactime_plcp_start) { 4242 mpdu_offset += 2; 4243 ts += 36; 4244 } 4245 break; 4246 case RX_ENC_HE: 4247 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 4248 ri.mcs = status->rate_idx; 4249 ri.nss = status->nss; 4250 ri.he_ru_alloc = status->he_ru; 4251 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 4252 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 4253 4254 /* 4255 * See P802.11ax_D6.0, section 27.3.4 for 4256 * VHT PPDU format. 4257 */ 4258 if (mactime_plcp_start) { 4259 mpdu_offset += 2; 4260 ts += 36; 4261 4262 /* 4263 * TODO: 4264 * For HE MU PPDU, add the HE-SIG-B. 4265 * For HE ER PPDU, add 8us for the HE-SIG-A. 4266 * For HE TB PPDU, add 4us for the HE-STF. 4267 * Add the HE-LTF durations - variable. 4268 */ 4269 } 4270 4271 break; 4272 case RX_ENC_HT: 4273 ri.mcs = status->rate_idx; 4274 ri.flags |= RATE_INFO_FLAGS_MCS; 4275 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 4276 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 4277 4278 /* 4279 * See P802.11REVmd_D3.0, section 19.3.2 for 4280 * HT PPDU format. 4281 */ 4282 if (mactime_plcp_start) { 4283 mpdu_offset += 2; 4284 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 4285 ts += 24; 4286 else 4287 ts += 32; 4288 4289 /* 4290 * Add Data HT-LTFs per streams 4291 * TODO: add Extension HT-LTFs, 4us per LTF 4292 */ 4293 n_ltf = ((ri.mcs >> 3) & 3) + 1; 4294 n_ltf = n_ltf == 3 ? 4 : n_ltf; 4295 ts += n_ltf * 4; 4296 } 4297 4298 break; 4299 case RX_ENC_VHT: 4300 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 4301 ri.mcs = status->rate_idx; 4302 ri.nss = status->nss; 4303 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 4304 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 4305 4306 /* 4307 * See P802.11REVmd_D3.0, section 21.3.2 for 4308 * VHT PPDU format. 4309 */ 4310 if (mactime_plcp_start) { 4311 mpdu_offset += 2; 4312 ts += 36; 4313 4314 /* 4315 * Add VHT-LTFs per streams 4316 */ 4317 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 4318 ri.nss + 1 : ri.nss; 4319 ts += 4 * n_ltf; 4320 } 4321 4322 break; 4323 default: 4324 WARN_ON(1); 4325 fallthrough; 4326 case RX_ENC_LEGACY: { 4327 struct ieee80211_supported_band *sband; 4328 4329 sband = local->hw.wiphy->bands[status->band]; 4330 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 4331 4332 if (mactime_plcp_start) { 4333 if (status->band == NL80211_BAND_5GHZ) { 4334 ts += 20; 4335 mpdu_offset += 2; 4336 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 4337 ts += 96; 4338 } else { 4339 ts += 192; 4340 } 4341 } 4342 break; 4343 } 4344 } 4345 4346 rate = cfg80211_calculate_bitrate(&ri); 4347 if (WARN_ONCE(!rate, 4348 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 4349 (unsigned long long)status->flag, status->rate_idx, 4350 status->nss)) 4351 return 0; 4352 4353 /* rewind from end of MPDU */ 4354 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 4355 ts -= mpdu_len * 8 * 10 / rate; 4356 4357 ts += mpdu_offset * 8 * 10 / rate; 4358 4359 return ts; 4360 } 4361 4362 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 4363 { 4364 struct ieee80211_sub_if_data *sdata; 4365 struct cfg80211_chan_def chandef; 4366 4367 lockdep_assert_wiphy(local->hw.wiphy); 4368 4369 list_for_each_entry(sdata, &local->interfaces, list) { 4370 /* it might be waiting for the local->mtx, but then 4371 * by the time it gets it, sdata->wdev.cac_started 4372 * will no longer be true 4373 */ 4374 wiphy_delayed_work_cancel(local->hw.wiphy, 4375 &sdata->deflink.dfs_cac_timer_work); 4376 4377 if (sdata->wdev.cac_started) { 4378 chandef = sdata->vif.bss_conf.chandef; 4379 ieee80211_link_release_channel(&sdata->deflink); 4380 cfg80211_cac_event(sdata->dev, 4381 &chandef, 4382 NL80211_RADAR_CAC_ABORTED, 4383 GFP_KERNEL); 4384 } 4385 } 4386 } 4387 4388 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 4389 struct wiphy_work *work) 4390 { 4391 struct ieee80211_local *local = 4392 container_of(work, struct ieee80211_local, radar_detected_work); 4393 struct cfg80211_chan_def chandef = local->hw.conf.chandef; 4394 struct ieee80211_chanctx *ctx; 4395 int num_chanctx = 0; 4396 4397 lockdep_assert_wiphy(local->hw.wiphy); 4398 4399 list_for_each_entry(ctx, &local->chanctx_list, list) { 4400 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 4401 continue; 4402 4403 num_chanctx++; 4404 chandef = ctx->conf.def; 4405 } 4406 4407 ieee80211_dfs_cac_cancel(local); 4408 4409 if (num_chanctx > 1) 4410 /* XXX: multi-channel is not supported yet */ 4411 WARN_ON(1); 4412 else 4413 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 4414 } 4415 4416 void ieee80211_radar_detected(struct ieee80211_hw *hw) 4417 { 4418 struct ieee80211_local *local = hw_to_local(hw); 4419 4420 trace_api_radar_detected(local); 4421 4422 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 4423 } 4424 EXPORT_SYMBOL(ieee80211_radar_detected); 4425 4426 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 4427 struct ieee80211_conn_settings *conn) 4428 { 4429 struct ieee80211_conn_settings _ignored = {}; 4430 int tmp; 4431 4432 /* allow passing NULL if caller doesn't care */ 4433 if (!conn) 4434 conn = &_ignored; 4435 4436 switch (c->width) { 4437 default: 4438 case NL80211_CHAN_WIDTH_20_NOHT: 4439 WARN_ON_ONCE(1); 4440 fallthrough; 4441 case NL80211_CHAN_WIDTH_20: 4442 c->width = NL80211_CHAN_WIDTH_20_NOHT; 4443 conn->mode = IEEE80211_CONN_MODE_LEGACY; 4444 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 4445 break; 4446 case NL80211_CHAN_WIDTH_40: 4447 c->width = NL80211_CHAN_WIDTH_20; 4448 c->center_freq1 = c->chan->center_freq; 4449 if (conn->mode == IEEE80211_CONN_MODE_VHT) 4450 conn->mode = IEEE80211_CONN_MODE_HT; 4451 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 4452 break; 4453 case NL80211_CHAN_WIDTH_80: 4454 tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 4455 /* n_P40 */ 4456 tmp /= 2; 4457 /* freq_P40 */ 4458 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 4459 c->width = NL80211_CHAN_WIDTH_40; 4460 if (conn->mode == IEEE80211_CONN_MODE_VHT) 4461 conn->mode = IEEE80211_CONN_MODE_HT; 4462 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 4463 break; 4464 case NL80211_CHAN_WIDTH_80P80: 4465 c->center_freq2 = 0; 4466 c->width = NL80211_CHAN_WIDTH_80; 4467 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 4468 break; 4469 case NL80211_CHAN_WIDTH_160: 4470 /* n_P20 */ 4471 tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 4472 /* n_P80 */ 4473 tmp /= 4; 4474 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 4475 c->width = NL80211_CHAN_WIDTH_80; 4476 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 4477 break; 4478 case NL80211_CHAN_WIDTH_320: 4479 /* n_P20 */ 4480 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20; 4481 /* n_P160 */ 4482 tmp /= 8; 4483 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp; 4484 c->width = NL80211_CHAN_WIDTH_160; 4485 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 4486 break; 4487 case NL80211_CHAN_WIDTH_1: 4488 case NL80211_CHAN_WIDTH_2: 4489 case NL80211_CHAN_WIDTH_4: 4490 case NL80211_CHAN_WIDTH_8: 4491 case NL80211_CHAN_WIDTH_16: 4492 WARN_ON_ONCE(1); 4493 /* keep c->width */ 4494 conn->mode = IEEE80211_CONN_MODE_S1G; 4495 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 4496 break; 4497 case NL80211_CHAN_WIDTH_5: 4498 case NL80211_CHAN_WIDTH_10: 4499 WARN_ON_ONCE(1); 4500 /* keep c->width */ 4501 conn->mode = IEEE80211_CONN_MODE_LEGACY; 4502 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 4503 break; 4504 } 4505 4506 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 4507 } 4508 4509 /* 4510 * Returns true if smps_mode_new is strictly more restrictive than 4511 * smps_mode_old. 4512 */ 4513 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 4514 enum ieee80211_smps_mode smps_mode_new) 4515 { 4516 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 4517 smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 4518 return false; 4519 4520 switch (smps_mode_old) { 4521 case IEEE80211_SMPS_STATIC: 4522 return false; 4523 case IEEE80211_SMPS_DYNAMIC: 4524 return smps_mode_new == IEEE80211_SMPS_STATIC; 4525 case IEEE80211_SMPS_OFF: 4526 return smps_mode_new != IEEE80211_SMPS_OFF; 4527 default: 4528 WARN_ON(1); 4529 } 4530 4531 return false; 4532 } 4533 4534 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 4535 struct cfg80211_csa_settings *csa_settings) 4536 { 4537 struct sk_buff *skb; 4538 struct ieee80211_mgmt *mgmt; 4539 struct ieee80211_local *local = sdata->local; 4540 int freq; 4541 int hdr_len = offsetofend(struct ieee80211_mgmt, 4542 u.action.u.chan_switch); 4543 u8 *pos; 4544 4545 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 4546 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 4547 return -EOPNOTSUPP; 4548 4549 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 4550 5 + /* channel switch announcement element */ 4551 3 + /* secondary channel offset element */ 4552 5 + /* wide bandwidth channel switch announcement */ 4553 8); /* mesh channel switch parameters element */ 4554 if (!skb) 4555 return -ENOMEM; 4556 4557 skb_reserve(skb, local->tx_headroom); 4558 mgmt = skb_put_zero(skb, hdr_len); 4559 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 4560 IEEE80211_STYPE_ACTION); 4561 4562 eth_broadcast_addr(mgmt->da); 4563 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 4564 if (ieee80211_vif_is_mesh(&sdata->vif)) { 4565 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 4566 } else { 4567 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 4568 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 4569 } 4570 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 4571 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 4572 pos = skb_put(skb, 5); 4573 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 4574 *pos++ = 3; /* IE length */ 4575 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 4576 freq = csa_settings->chandef.chan->center_freq; 4577 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 4578 *pos++ = csa_settings->count; /* count */ 4579 4580 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 4581 enum nl80211_channel_type ch_type; 4582 4583 skb_put(skb, 3); 4584 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 4585 *pos++ = 1; /* IE length */ 4586 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 4587 if (ch_type == NL80211_CHAN_HT40PLUS) 4588 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 4589 else 4590 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 4591 } 4592 4593 if (ieee80211_vif_is_mesh(&sdata->vif)) { 4594 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 4595 4596 skb_put(skb, 8); 4597 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 4598 *pos++ = 6; /* IE length */ 4599 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 4600 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 4601 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 4602 *pos++ |= csa_settings->block_tx ? 4603 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 4604 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 4605 pos += 2; 4606 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 4607 pos += 2; 4608 } 4609 4610 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 4611 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 4612 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 4613 skb_put(skb, 5); 4614 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 4615 } 4616 4617 ieee80211_tx_skb(sdata, skb); 4618 return 0; 4619 } 4620 4621 static bool 4622 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 4623 { 4624 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 4625 int skip; 4626 4627 if (end > 0) 4628 return false; 4629 4630 /* One shot NOA */ 4631 if (data->count[i] == 1) 4632 return false; 4633 4634 if (data->desc[i].interval == 0) 4635 return false; 4636 4637 /* End time is in the past, check for repetitions */ 4638 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 4639 if (data->count[i] < 255) { 4640 if (data->count[i] <= skip) { 4641 data->count[i] = 0; 4642 return false; 4643 } 4644 4645 data->count[i] -= skip; 4646 } 4647 4648 data->desc[i].start += skip * data->desc[i].interval; 4649 4650 return true; 4651 } 4652 4653 static bool 4654 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 4655 s32 *offset) 4656 { 4657 bool ret = false; 4658 int i; 4659 4660 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4661 s32 cur; 4662 4663 if (!data->count[i]) 4664 continue; 4665 4666 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 4667 ret = true; 4668 4669 cur = data->desc[i].start - tsf; 4670 if (cur > *offset) 4671 continue; 4672 4673 cur = data->desc[i].start + data->desc[i].duration - tsf; 4674 if (cur > *offset) 4675 *offset = cur; 4676 } 4677 4678 return ret; 4679 } 4680 4681 static u32 4682 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 4683 { 4684 s32 offset = 0; 4685 int tries = 0; 4686 /* 4687 * arbitrary limit, used to avoid infinite loops when combined NoA 4688 * descriptors cover the full time period. 4689 */ 4690 int max_tries = 5; 4691 4692 ieee80211_extend_absent_time(data, tsf, &offset); 4693 do { 4694 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 4695 break; 4696 4697 tries++; 4698 } while (tries < max_tries); 4699 4700 return offset; 4701 } 4702 4703 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 4704 { 4705 u32 next_offset = BIT(31) - 1; 4706 int i; 4707 4708 data->absent = 0; 4709 data->has_next_tsf = false; 4710 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4711 s32 start; 4712 4713 if (!data->count[i]) 4714 continue; 4715 4716 ieee80211_extend_noa_desc(data, tsf, i); 4717 start = data->desc[i].start - tsf; 4718 if (start <= 0) 4719 data->absent |= BIT(i); 4720 4721 if (next_offset > start) 4722 next_offset = start; 4723 4724 data->has_next_tsf = true; 4725 } 4726 4727 if (data->absent) 4728 next_offset = ieee80211_get_noa_absent_time(data, tsf); 4729 4730 data->next_tsf = tsf + next_offset; 4731 } 4732 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 4733 4734 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 4735 struct ieee80211_noa_data *data, u32 tsf) 4736 { 4737 int ret = 0; 4738 int i; 4739 4740 memset(data, 0, sizeof(*data)); 4741 4742 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4743 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 4744 4745 if (!desc->count || !desc->duration) 4746 continue; 4747 4748 data->count[i] = desc->count; 4749 data->desc[i].start = le32_to_cpu(desc->start_time); 4750 data->desc[i].duration = le32_to_cpu(desc->duration); 4751 data->desc[i].interval = le32_to_cpu(desc->interval); 4752 4753 if (data->count[i] > 1 && 4754 data->desc[i].interval < data->desc[i].duration) 4755 continue; 4756 4757 ieee80211_extend_noa_desc(data, tsf, i); 4758 ret++; 4759 } 4760 4761 if (ret) 4762 ieee80211_update_p2p_noa(data, tsf); 4763 4764 return ret; 4765 } 4766 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 4767 4768 void ieee80211_recalc_dtim(struct ieee80211_local *local, 4769 struct ieee80211_sub_if_data *sdata) 4770 { 4771 u64 tsf = drv_get_tsf(local, sdata); 4772 u64 dtim_count = 0; 4773 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4774 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4775 struct ps_data *ps; 4776 u8 bcns_from_dtim; 4777 4778 if (tsf == -1ULL || !beacon_int || !dtim_period) 4779 return; 4780 4781 if (sdata->vif.type == NL80211_IFTYPE_AP || 4782 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4783 if (!sdata->bss) 4784 return; 4785 4786 ps = &sdata->bss->ps; 4787 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4788 ps = &sdata->u.mesh.ps; 4789 } else { 4790 return; 4791 } 4792 4793 /* 4794 * actually finds last dtim_count, mac80211 will update in 4795 * __beacon_add_tim(). 4796 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4797 */ 4798 do_div(tsf, beacon_int); 4799 bcns_from_dtim = do_div(tsf, dtim_period); 4800 /* just had a DTIM */ 4801 if (!bcns_from_dtim) 4802 dtim_count = 0; 4803 else 4804 dtim_count = dtim_period - bcns_from_dtim; 4805 4806 ps->dtim_count = dtim_count; 4807 } 4808 4809 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 4810 struct ieee80211_chanctx *ctx) 4811 { 4812 struct ieee80211_link_data *link; 4813 u8 radar_detect = 0; 4814 4815 lockdep_assert_wiphy(local->hw.wiphy); 4816 4817 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 4818 return 0; 4819 4820 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) 4821 if (link->reserved_radar_required) 4822 radar_detect |= BIT(link->reserved_chandef.width); 4823 4824 /* 4825 * An in-place reservation context should not have any assigned vifs 4826 * until it replaces the other context. 4827 */ 4828 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 4829 !list_empty(&ctx->assigned_links)); 4830 4831 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { 4832 if (!link->radar_required) 4833 continue; 4834 4835 radar_detect |= 4836 BIT(link->conf->chandef.width); 4837 } 4838 4839 return radar_detect; 4840 } 4841 4842 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 4843 const struct cfg80211_chan_def *chandef, 4844 enum ieee80211_chanctx_mode chanmode, 4845 u8 radar_detect) 4846 { 4847 struct ieee80211_local *local = sdata->local; 4848 struct ieee80211_sub_if_data *sdata_iter; 4849 enum nl80211_iftype iftype = sdata->wdev.iftype; 4850 struct ieee80211_chanctx *ctx; 4851 int total = 1; 4852 struct iface_combination_params params = { 4853 .radar_detect = radar_detect, 4854 }; 4855 4856 lockdep_assert_wiphy(local->hw.wiphy); 4857 4858 if (WARN_ON(hweight32(radar_detect) > 1)) 4859 return -EINVAL; 4860 4861 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4862 !chandef->chan)) 4863 return -EINVAL; 4864 4865 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4866 return -EINVAL; 4867 4868 if (sdata->vif.type == NL80211_IFTYPE_AP || 4869 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4870 /* 4871 * always passing this is harmless, since it'll be the 4872 * same value that cfg80211 finds if it finds the same 4873 * interface ... and that's always allowed 4874 */ 4875 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4876 } 4877 4878 /* Always allow software iftypes */ 4879 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4880 if (radar_detect) 4881 return -EINVAL; 4882 return 0; 4883 } 4884 4885 if (chandef) 4886 params.num_different_channels = 1; 4887 4888 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4889 params.iftype_num[iftype] = 1; 4890 4891 list_for_each_entry(ctx, &local->chanctx_list, list) { 4892 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4893 continue; 4894 params.radar_detect |= 4895 ieee80211_chanctx_radar_detect(local, ctx); 4896 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 4897 params.num_different_channels++; 4898 continue; 4899 } 4900 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4901 cfg80211_chandef_compatible(chandef, 4902 &ctx->conf.def)) 4903 continue; 4904 params.num_different_channels++; 4905 } 4906 4907 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 4908 struct wireless_dev *wdev_iter; 4909 4910 wdev_iter = &sdata_iter->wdev; 4911 4912 if (sdata_iter == sdata || 4913 !ieee80211_sdata_running(sdata_iter) || 4914 cfg80211_iftype_allowed(local->hw.wiphy, 4915 wdev_iter->iftype, 0, 1)) 4916 continue; 4917 4918 params.iftype_num[wdev_iter->iftype]++; 4919 total++; 4920 } 4921 4922 if (total == 1 && !params.radar_detect) 4923 return 0; 4924 4925 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4926 } 4927 4928 static void 4929 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4930 void *data) 4931 { 4932 u32 *max_num_different_channels = data; 4933 4934 *max_num_different_channels = max(*max_num_different_channels, 4935 c->num_different_channels); 4936 } 4937 4938 int ieee80211_max_num_channels(struct ieee80211_local *local) 4939 { 4940 struct ieee80211_sub_if_data *sdata; 4941 struct ieee80211_chanctx *ctx; 4942 u32 max_num_different_channels = 1; 4943 int err; 4944 struct iface_combination_params params = {0}; 4945 4946 lockdep_assert_wiphy(local->hw.wiphy); 4947 4948 list_for_each_entry(ctx, &local->chanctx_list, list) { 4949 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4950 continue; 4951 4952 params.num_different_channels++; 4953 4954 params.radar_detect |= 4955 ieee80211_chanctx_radar_detect(local, ctx); 4956 } 4957 4958 list_for_each_entry_rcu(sdata, &local->interfaces, list) 4959 params.iftype_num[sdata->wdev.iftype]++; 4960 4961 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4962 ieee80211_iter_max_chans, 4963 &max_num_different_channels); 4964 if (err < 0) 4965 return err; 4966 4967 return max_num_different_channels; 4968 } 4969 4970 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4971 struct ieee80211_sta_s1g_cap *caps, 4972 struct sk_buff *skb) 4973 { 4974 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4975 struct ieee80211_s1g_cap s1g_capab; 4976 u8 *pos; 4977 int i; 4978 4979 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4980 return; 4981 4982 if (!caps->s1g) 4983 return; 4984 4985 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4986 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4987 4988 /* override the capability info */ 4989 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4990 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4991 4992 s1g_capab.capab_info[i] &= ~mask; 4993 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4994 } 4995 4996 /* then MCS and NSS set */ 4997 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4998 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4999 5000 s1g_capab.supp_mcs_nss[i] &= ~mask; 5001 s1g_capab.supp_mcs_nss[i] |= 5002 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 5003 } 5004 5005 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 5006 *pos++ = WLAN_EID_S1G_CAPABILITIES; 5007 *pos++ = sizeof(s1g_capab); 5008 5009 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 5010 } 5011 5012 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 5013 struct sk_buff *skb) 5014 { 5015 u8 *pos = skb_put(skb, 3); 5016 5017 *pos++ = WLAN_EID_AID_REQUEST; 5018 *pos++ = 1; 5019 *pos++ = 0; 5020 } 5021 5022 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 5023 { 5024 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 5025 *buf++ = 7; /* len */ 5026 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 5027 *buf++ = 0x50; 5028 *buf++ = 0xf2; 5029 *buf++ = 2; /* WME */ 5030 *buf++ = 0; /* WME info */ 5031 *buf++ = 1; /* WME ver */ 5032 *buf++ = qosinfo; /* U-APSD no in use */ 5033 5034 return buf; 5035 } 5036 5037 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 5038 unsigned long *frame_cnt, 5039 unsigned long *byte_cnt) 5040 { 5041 struct txq_info *txqi = to_txq_info(txq); 5042 u32 frag_cnt = 0, frag_bytes = 0; 5043 struct sk_buff *skb; 5044 5045 skb_queue_walk(&txqi->frags, skb) { 5046 frag_cnt++; 5047 frag_bytes += skb->len; 5048 } 5049 5050 if (frame_cnt) 5051 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 5052 5053 if (byte_cnt) 5054 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 5055 } 5056 EXPORT_SYMBOL(ieee80211_txq_get_depth); 5057 5058 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 5059 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 5060 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 5061 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 5062 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 5063 }; 5064 5065 u16 ieee80211_encode_usf(int listen_interval) 5066 { 5067 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 5068 u16 ui, usf = 0; 5069 5070 /* find greatest USF */ 5071 while (usf < IEEE80211_MAX_USF) { 5072 if (listen_interval % listen_int_usf[usf + 1]) 5073 break; 5074 usf += 1; 5075 } 5076 ui = listen_interval / listen_int_usf[usf]; 5077 5078 /* error if there is a remainder. Should've been checked by user */ 5079 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 5080 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 5081 FIELD_PREP(LISTEN_INT_UI, ui); 5082 5083 return (u16) listen_interval; 5084 } 5085 5086 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) 5087 { 5088 const struct ieee80211_sta_he_cap *he_cap; 5089 const struct ieee80211_sta_eht_cap *eht_cap; 5090 struct ieee80211_supported_band *sband; 5091 bool is_ap; 5092 u8 n; 5093 5094 sband = ieee80211_get_sband(sdata); 5095 if (!sband) 5096 return 0; 5097 5098 he_cap = ieee80211_get_he_iftype_cap(sband, iftype); 5099 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); 5100 if (!he_cap || !eht_cap) 5101 return 0; 5102 5103 is_ap = iftype == NL80211_IFTYPE_AP || 5104 iftype == NL80211_IFTYPE_P2P_GO; 5105 5106 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 5107 &eht_cap->eht_cap_elem, 5108 is_ap); 5109 return 2 + 1 + 5110 sizeof(eht_cap->eht_cap_elem) + n + 5111 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 5112 eht_cap->eht_cap_elem.phy_cap_info); 5113 return 0; 5114 } 5115 5116 u8 *ieee80211_ie_build_eht_cap(u8 *pos, 5117 const struct ieee80211_sta_he_cap *he_cap, 5118 const struct ieee80211_sta_eht_cap *eht_cap, 5119 u8 *end, 5120 bool for_ap) 5121 { 5122 u8 mcs_nss_len, ppet_len; 5123 u8 ie_len; 5124 u8 *orig_pos = pos; 5125 5126 /* Make sure we have place for the IE */ 5127 if (!he_cap || !eht_cap) 5128 return orig_pos; 5129 5130 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 5131 &eht_cap->eht_cap_elem, 5132 for_ap); 5133 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 5134 eht_cap->eht_cap_elem.phy_cap_info); 5135 5136 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 5137 if ((end - pos) < ie_len) 5138 return orig_pos; 5139 5140 *pos++ = WLAN_EID_EXTENSION; 5141 *pos++ = ie_len - 2; 5142 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY; 5143 5144 /* Fixed data */ 5145 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem)); 5146 pos += sizeof(eht_cap->eht_cap_elem); 5147 5148 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 5149 pos += mcs_nss_len; 5150 5151 if (ppet_len) { 5152 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len); 5153 pos += ppet_len; 5154 } 5155 5156 return pos; 5157 } 5158 5159 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 5160 { 5161 static const char * const modes[] = { 5162 [IEEE80211_CONN_MODE_S1G] = "S1G", 5163 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 5164 [IEEE80211_CONN_MODE_HT] = "HT", 5165 [IEEE80211_CONN_MODE_VHT] = "VHT", 5166 [IEEE80211_CONN_MODE_HE] = "HE", 5167 [IEEE80211_CONN_MODE_EHT] = "EHT", 5168 }; 5169 5170 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 5171 return "<out of range>"; 5172 5173 return modes[mode] ?: "<missing string>"; 5174 } 5175 5176 enum ieee80211_conn_bw_limit 5177 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 5178 { 5179 switch (chandef->width) { 5180 case NL80211_CHAN_WIDTH_20_NOHT: 5181 case NL80211_CHAN_WIDTH_20: 5182 return IEEE80211_CONN_BW_LIMIT_20; 5183 case NL80211_CHAN_WIDTH_40: 5184 return IEEE80211_CONN_BW_LIMIT_40; 5185 case NL80211_CHAN_WIDTH_80: 5186 return IEEE80211_CONN_BW_LIMIT_80; 5187 case NL80211_CHAN_WIDTH_80P80: 5188 case NL80211_CHAN_WIDTH_160: 5189 return IEEE80211_CONN_BW_LIMIT_160; 5190 case NL80211_CHAN_WIDTH_320: 5191 return IEEE80211_CONN_BW_LIMIT_320; 5192 default: 5193 WARN(1, "unhandled chandef width %d\n", chandef->width); 5194 return IEEE80211_CONN_BW_LIMIT_20; 5195 } 5196 } 5197