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) 2018-2026 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 if (len < offsetofend(struct ieee80211_ext, u.s1g_beacon.sa)) 77 return NULL; 78 79 return ext->u.s1g_beacon.sa; 80 } 81 82 if (ieee80211_is_mgmt(fc)) { 83 if (len < 24) /* drop incorrect hdr len (mgmt) */ 84 return NULL; 85 return hdr->addr3; 86 } 87 88 if (ieee80211_is_ctl(fc)) { 89 if (ieee80211_is_pspoll(fc)) 90 return hdr->addr1; 91 92 if (ieee80211_is_back_req(fc)) { 93 switch (type) { 94 case NL80211_IFTYPE_STATION: 95 return hdr->addr2; 96 case NL80211_IFTYPE_AP: 97 case NL80211_IFTYPE_AP_VLAN: 98 return hdr->addr1; 99 default: 100 break; /* fall through to the return */ 101 } 102 } 103 } 104 105 return NULL; 106 } 107 108 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 109 { 110 struct sk_buff *skb; 111 struct ieee80211_hdr *hdr; 112 113 skb_queue_walk(&tx->skbs, skb) { 114 hdr = (struct ieee80211_hdr *) skb->data; 115 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 116 } 117 } 118 119 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 120 int rate, int erp, int short_preamble) 121 { 122 int dur; 123 124 /* calculate duration (in microseconds, rounded up to next higher 125 * integer if it includes a fractional microsecond) to send frame of 126 * len bytes (does not include FCS) at the given rate. Duration will 127 * also include SIFS. 128 * 129 * rate is in 100 kbps, so divident is multiplied by 10 in the 130 * DIV_ROUND_UP() operations. 131 */ 132 133 if (band == NL80211_BAND_5GHZ || erp) { 134 /* 135 * OFDM: 136 * 137 * N_DBPS = DATARATE x 4 138 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 139 * (16 = SIGNAL time, 6 = tail bits) 140 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 141 * 142 * T_SYM = 4 usec 143 * 802.11a - 18.5.2: aSIFSTime = 16 usec 144 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 145 * signal ext = 6 usec 146 */ 147 dur = 16; /* SIFS + signal ext */ 148 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 149 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 150 151 /* rates should already consider the channel bandwidth, 152 * don't apply divisor again. 153 */ 154 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 155 4 * rate); /* T_SYM x N_SYM */ 156 } else { 157 /* 158 * 802.11b or 802.11g with 802.11b compatibility: 159 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 160 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 161 * 162 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 163 * aSIFSTime = 10 usec 164 * aPreambleLength = 144 usec or 72 usec with short preamble 165 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 166 */ 167 dur = 10; /* aSIFSTime = 10 usec */ 168 dur += short_preamble ? (72 + 24) : (144 + 48); 169 170 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 171 } 172 173 return dur; 174 } 175 176 /* Exported duration function for driver use */ 177 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 178 struct ieee80211_vif *vif, 179 enum nl80211_band band, 180 size_t frame_len, 181 struct ieee80211_rate *rate) 182 { 183 struct ieee80211_sub_if_data *sdata; 184 u16 dur; 185 int erp; 186 bool short_preamble = false; 187 188 erp = 0; 189 if (vif) { 190 sdata = vif_to_sdata(vif); 191 short_preamble = sdata->vif.bss_conf.use_short_preamble; 192 if (sdata->deflink.operating_11g_mode) 193 erp = rate->flags & IEEE80211_RATE_ERP_G; 194 } 195 196 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 197 short_preamble); 198 199 return cpu_to_le16(dur); 200 } 201 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 202 203 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 204 struct ieee80211_vif *vif, size_t frame_len, 205 const struct ieee80211_tx_info *frame_txctl) 206 { 207 struct ieee80211_local *local = hw_to_local(hw); 208 struct ieee80211_rate *rate; 209 struct ieee80211_sub_if_data *sdata; 210 bool short_preamble; 211 int erp, bitrate; 212 u16 dur; 213 struct ieee80211_supported_band *sband; 214 215 sband = local->hw.wiphy->bands[frame_txctl->band]; 216 217 short_preamble = false; 218 219 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 220 221 erp = 0; 222 if (vif) { 223 sdata = vif_to_sdata(vif); 224 short_preamble = sdata->vif.bss_conf.use_short_preamble; 225 if (sdata->deflink.operating_11g_mode) 226 erp = rate->flags & IEEE80211_RATE_ERP_G; 227 } 228 229 bitrate = rate->bitrate; 230 231 /* CTS duration */ 232 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 233 erp, short_preamble); 234 /* Data frame duration */ 235 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 236 erp, short_preamble); 237 /* ACK duration */ 238 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 239 erp, short_preamble); 240 241 return cpu_to_le16(dur); 242 } 243 EXPORT_SYMBOL(ieee80211_rts_duration); 244 245 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 246 struct ieee80211_vif *vif, 247 size_t frame_len, 248 const struct ieee80211_tx_info *frame_txctl) 249 { 250 struct ieee80211_local *local = hw_to_local(hw); 251 struct ieee80211_rate *rate; 252 struct ieee80211_sub_if_data *sdata; 253 bool short_preamble; 254 int erp, bitrate; 255 u16 dur; 256 struct ieee80211_supported_band *sband; 257 258 sband = local->hw.wiphy->bands[frame_txctl->band]; 259 260 short_preamble = false; 261 262 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 263 erp = 0; 264 if (vif) { 265 sdata = vif_to_sdata(vif); 266 short_preamble = sdata->vif.bss_conf.use_short_preamble; 267 if (sdata->deflink.operating_11g_mode) 268 erp = rate->flags & IEEE80211_RATE_ERP_G; 269 } 270 271 bitrate = rate->bitrate; 272 273 /* Data frame duration */ 274 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 275 erp, short_preamble); 276 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 277 /* ACK duration */ 278 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 279 erp, short_preamble); 280 } 281 282 return cpu_to_le16(dur); 283 } 284 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 285 286 static void wake_tx_push_queue(struct ieee80211_local *local, 287 struct ieee80211_sub_if_data *sdata, 288 struct ieee80211_txq *queue) 289 { 290 struct ieee80211_tx_control control = { 291 .sta = queue->sta, 292 }; 293 struct sk_buff *skb; 294 295 while (1) { 296 skb = ieee80211_tx_dequeue(&local->hw, queue); 297 if (!skb) 298 break; 299 300 drv_tx(local, &control, skb); 301 } 302 } 303 304 /* wake_tx_queue handler for driver not implementing a custom one*/ 305 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 306 struct ieee80211_txq *txq) 307 { 308 struct ieee80211_local *local = hw_to_local(hw); 309 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 310 struct ieee80211_txq *queue; 311 312 spin_lock(&local->handle_wake_tx_queue_lock); 313 314 /* Use ieee80211_next_txq() for airtime fairness accounting */ 315 ieee80211_txq_schedule_start(hw, txq->ac); 316 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 317 wake_tx_push_queue(local, sdata, queue); 318 ieee80211_return_txq(hw, queue, false); 319 } 320 ieee80211_txq_schedule_end(hw, txq->ac); 321 spin_unlock(&local->handle_wake_tx_queue_lock); 322 } 323 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 324 325 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 326 { 327 struct ieee80211_local *local = sdata->local; 328 struct ieee80211_vif *vif = &sdata->vif; 329 struct fq *fq = &local->fq; 330 struct ps_data *ps = NULL; 331 struct txq_info *txqi = NULL; 332 struct sta_info *sta; 333 int i; 334 335 local_bh_disable(); 336 spin_lock(&fq->lock); 337 338 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 339 goto out; 340 341 if (sdata->vif.type == NL80211_IFTYPE_AP) 342 ps = &sdata->bss->ps; 343 344 list_for_each_entry_rcu(sta, &local->sta_list, list) { 345 if (sdata != sta->sdata) 346 continue; 347 348 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 349 struct ieee80211_txq *txq = sta->sta.txq[i]; 350 struct txq_info *sta_txqi; 351 352 if (!txq) 353 continue; 354 355 sta_txqi = to_txq_info(txq); 356 357 if (ac != txq->ac) 358 continue; 359 360 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 361 &sta_txqi->flags)) 362 continue; 363 364 spin_unlock(&fq->lock); 365 drv_wake_tx_queue(local, sta_txqi); 366 spin_lock(&fq->lock); 367 } 368 } 369 370 if (vif->txq) { 371 txqi = to_txq_info(vif->txq); 372 373 /* txq and txq_mgmt are mutually exclusive */ 374 WARN_ON_ONCE(vif->txq_mgmt); 375 376 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 377 (ps && atomic_read(&ps->num_sta_ps)) || 378 ac != vif->txq->ac) 379 txqi = NULL; 380 } else if (vif->txq_mgmt) { 381 txqi = to_txq_info(vif->txq_mgmt); 382 383 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 384 ac != vif->txq_mgmt->ac) 385 txqi = NULL; 386 } 387 388 spin_unlock(&fq->lock); 389 390 if (txqi) 391 drv_wake_tx_queue(local, txqi); 392 393 local_bh_enable(); 394 return; 395 out: 396 spin_unlock(&fq->lock); 397 local_bh_enable(); 398 } 399 400 static void 401 __releases(&local->queue_stop_reason_lock) 402 __acquires(&local->queue_stop_reason_lock) 403 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 404 { 405 struct ieee80211_sub_if_data *sdata; 406 int n_acs = IEEE80211_NUM_ACS; 407 int i; 408 409 rcu_read_lock(); 410 411 if (local->hw.queues < IEEE80211_NUM_ACS) 412 n_acs = 1; 413 414 for (i = 0; i < local->hw.queues; i++) { 415 if (local->queue_stop_reasons[i]) 416 continue; 417 418 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 419 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 420 int ac; 421 422 for (ac = 0; ac < n_acs; ac++) { 423 int ac_queue = sdata->vif.hw_queue[ac]; 424 425 if (ac_queue == i || 426 sdata->vif.cab_queue == i) 427 __ieee80211_wake_txqs(sdata, ac); 428 } 429 } 430 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 431 } 432 433 rcu_read_unlock(); 434 } 435 436 void ieee80211_wake_txqs(struct tasklet_struct *t) 437 { 438 struct ieee80211_local *local = from_tasklet(local, t, 439 wake_txqs_tasklet); 440 unsigned long flags; 441 442 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 443 _ieee80211_wake_txqs(local, &flags); 444 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 445 } 446 447 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 448 enum queue_stop_reason reason, 449 bool refcounted, 450 unsigned long *flags) 451 { 452 struct ieee80211_local *local = hw_to_local(hw); 453 454 if (WARN_ON(queue >= hw->queues)) 455 return; 456 457 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 458 return; 459 460 if (!refcounted) { 461 local->q_stop_reasons[queue][reason] = 0; 462 } else { 463 local->q_stop_reasons[queue][reason]--; 464 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 465 local->q_stop_reasons[queue][reason] = 0; 466 } 467 468 if (local->q_stop_reasons[queue][reason] == 0) 469 __clear_bit(reason, &local->queue_stop_reasons[queue]); 470 471 trace_wake_queue(local, queue, reason, 472 local->q_stop_reasons[queue][reason]); 473 474 if (local->queue_stop_reasons[queue] != 0) 475 /* someone still has this queue stopped */ 476 return; 477 478 if (!skb_queue_empty(&local->pending[queue])) 479 tasklet_schedule(&local->tx_pending_tasklet); 480 481 /* 482 * Calling _ieee80211_wake_txqs here can be a problem because it may 483 * release queue_stop_reason_lock which has been taken by 484 * __ieee80211_wake_queue's caller. It is certainly not very nice to 485 * release someone's lock, but it is fine because all the callers of 486 * __ieee80211_wake_queue call it right before releasing the lock. 487 */ 488 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 489 tasklet_schedule(&local->wake_txqs_tasklet); 490 else 491 _ieee80211_wake_txqs(local, flags); 492 } 493 494 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 495 enum queue_stop_reason reason, 496 bool refcounted) 497 { 498 struct ieee80211_local *local = hw_to_local(hw); 499 unsigned long flags; 500 501 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 502 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 503 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 504 } 505 506 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 507 { 508 ieee80211_wake_queue_by_reason(hw, queue, 509 IEEE80211_QUEUE_STOP_REASON_DRIVER, 510 false); 511 } 512 EXPORT_SYMBOL(ieee80211_wake_queue); 513 514 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 515 enum queue_stop_reason reason, 516 bool refcounted) 517 { 518 struct ieee80211_local *local = hw_to_local(hw); 519 520 if (WARN_ON(queue >= hw->queues)) 521 return; 522 523 if (!refcounted) 524 local->q_stop_reasons[queue][reason] = 1; 525 else 526 local->q_stop_reasons[queue][reason]++; 527 528 trace_stop_queue(local, queue, reason, 529 local->q_stop_reasons[queue][reason]); 530 531 set_bit(reason, &local->queue_stop_reasons[queue]); 532 } 533 534 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 535 enum queue_stop_reason reason, 536 bool refcounted) 537 { 538 struct ieee80211_local *local = hw_to_local(hw); 539 unsigned long flags; 540 541 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 542 __ieee80211_stop_queue(hw, queue, reason, refcounted); 543 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 544 } 545 546 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 547 { 548 ieee80211_stop_queue_by_reason(hw, queue, 549 IEEE80211_QUEUE_STOP_REASON_DRIVER, 550 false); 551 } 552 EXPORT_SYMBOL(ieee80211_stop_queue); 553 554 void ieee80211_add_pending_skb(struct ieee80211_local *local, 555 struct sk_buff *skb) 556 { 557 struct ieee80211_hw *hw = &local->hw; 558 unsigned long flags; 559 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 560 int queue = info->hw_queue; 561 562 if (WARN_ON(!info->control.vif)) { 563 ieee80211_free_txskb(&local->hw, skb); 564 return; 565 } 566 567 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 568 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 569 false); 570 __skb_queue_tail(&local->pending[queue], skb); 571 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 572 false, &flags); 573 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 574 } 575 576 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 577 struct sk_buff_head *skbs) 578 { 579 struct ieee80211_hw *hw = &local->hw; 580 struct sk_buff *skb; 581 unsigned long flags; 582 int queue, i; 583 584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 585 while ((skb = skb_dequeue(skbs))) { 586 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 587 588 if (WARN_ON(!info->control.vif)) { 589 ieee80211_free_txskb(&local->hw, skb); 590 continue; 591 } 592 593 queue = info->hw_queue; 594 595 __ieee80211_stop_queue(hw, queue, 596 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 597 false); 598 599 __skb_queue_tail(&local->pending[queue], skb); 600 } 601 602 for (i = 0; i < hw->queues; i++) 603 __ieee80211_wake_queue(hw, i, 604 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 605 false, &flags); 606 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 607 } 608 609 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 610 unsigned long queues, 611 enum queue_stop_reason reason, 612 bool refcounted) 613 { 614 struct ieee80211_local *local = hw_to_local(hw); 615 unsigned long flags; 616 int i; 617 618 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 619 620 for_each_set_bit(i, &queues, hw->queues) 621 __ieee80211_stop_queue(hw, i, reason, refcounted); 622 623 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 624 } 625 626 void ieee80211_stop_queues(struct ieee80211_hw *hw) 627 { 628 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 629 IEEE80211_QUEUE_STOP_REASON_DRIVER, 630 false); 631 } 632 EXPORT_SYMBOL(ieee80211_stop_queues); 633 634 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 635 { 636 struct ieee80211_local *local = hw_to_local(hw); 637 unsigned long flags; 638 int ret; 639 640 if (WARN_ON(queue >= hw->queues)) 641 return true; 642 643 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 644 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 645 &local->queue_stop_reasons[queue]); 646 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 647 return ret; 648 } 649 EXPORT_SYMBOL(ieee80211_queue_stopped); 650 651 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 652 unsigned long queues, 653 enum queue_stop_reason reason, 654 bool refcounted) 655 { 656 struct ieee80211_local *local = hw_to_local(hw); 657 unsigned long flags; 658 int i; 659 660 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 661 662 for_each_set_bit(i, &queues, hw->queues) 663 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 664 665 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 666 } 667 668 void ieee80211_wake_queues(struct ieee80211_hw *hw) 669 { 670 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 671 IEEE80211_QUEUE_STOP_REASON_DRIVER, 672 false); 673 } 674 EXPORT_SYMBOL(ieee80211_wake_queues); 675 676 unsigned int 677 ieee80211_get_vif_queues(struct ieee80211_local *local, 678 struct ieee80211_sub_if_data *sdata) 679 { 680 unsigned int queues; 681 682 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 683 int ac; 684 685 queues = 0; 686 687 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 688 if (sdata->vif.hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 689 queues |= BIT(sdata->vif.hw_queue[ac]); 690 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 691 queues |= BIT(sdata->vif.cab_queue); 692 } else { 693 /* all queues */ 694 queues = BIT(local->hw.queues) - 1; 695 } 696 697 return queues; 698 } 699 700 void __ieee80211_flush_queues(struct ieee80211_local *local, 701 struct ieee80211_sub_if_data *sdata, 702 unsigned int queues, bool drop) 703 { 704 if (!local->ops->flush && !drop) 705 return; 706 707 /* 708 * If no queue was set, or if the HW doesn't support 709 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 710 */ 711 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 712 queues = ieee80211_get_vif_queues(local, sdata); 713 714 ieee80211_stop_queues_by_reason(&local->hw, queues, 715 IEEE80211_QUEUE_STOP_REASON_FLUSH, 716 false); 717 718 if (drop) { 719 struct sta_info *sta; 720 721 /* Purge the queues, so the frames on them won't be 722 * sent during __ieee80211_wake_queue() 723 */ 724 list_for_each_entry(sta, &local->sta_list, list) { 725 if (sdata != sta->sdata) 726 continue; 727 ieee80211_purge_sta_txqs(sta); 728 } 729 } 730 731 if (local->ops->flush) 732 drv_flush(local, sdata, queues, drop); 733 734 ieee80211_wake_queues_by_reason(&local->hw, queues, 735 IEEE80211_QUEUE_STOP_REASON_FLUSH, 736 false); 737 } 738 739 void ieee80211_flush_queues(struct ieee80211_local *local, 740 struct ieee80211_sub_if_data *sdata, bool drop) 741 { 742 __ieee80211_flush_queues(local, sdata, 0, drop); 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 lockdep_is_held(&local->iflist_mtx) || 756 lockdep_is_held(&local->hw.wiphy->mtx)) { 757 switch (sdata->vif.type) { 758 case NL80211_IFTYPE_MONITOR: 759 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 760 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 761 continue; 762 break; 763 case NL80211_IFTYPE_AP_VLAN: 764 continue; 765 default: 766 break; 767 } 768 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 769 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 continue; 771 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 772 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 773 continue; 774 if (ieee80211_sdata_running(sdata) || !active_only) 775 iterator(data, sdata->vif.addr, 776 &sdata->vif); 777 } 778 779 sdata = rcu_dereference_check(local->monitor_sdata, 780 lockdep_is_held(&local->iflist_mtx) || 781 lockdep_is_held(&local->hw.wiphy->mtx)); 782 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 783 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 784 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 785 iterator(data, sdata->vif.addr, &sdata->vif); 786 } 787 788 void ieee80211_iterate_interfaces( 789 struct ieee80211_hw *hw, u32 iter_flags, 790 void (*iterator)(void *data, u8 *mac, 791 struct ieee80211_vif *vif), 792 void *data) 793 { 794 struct ieee80211_local *local = hw_to_local(hw); 795 796 mutex_lock(&local->iflist_mtx); 797 __iterate_interfaces(local, iter_flags, iterator, data); 798 mutex_unlock(&local->iflist_mtx); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 801 802 void ieee80211_iterate_active_interfaces_atomic( 803 struct ieee80211_hw *hw, u32 iter_flags, 804 void (*iterator)(void *data, u8 *mac, 805 struct ieee80211_vif *vif), 806 void *data) 807 { 808 struct ieee80211_local *local = hw_to_local(hw); 809 810 rcu_read_lock(); 811 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 812 iterator, data); 813 rcu_read_unlock(); 814 } 815 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 816 817 struct ieee80211_vif * 818 __ieee80211_iterate_interfaces(struct ieee80211_hw *hw, 819 struct ieee80211_vif *prev, 820 u32 iter_flags) 821 { 822 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 823 struct ieee80211_sub_if_data *sdata = NULL, *monitor; 824 struct ieee80211_local *local = hw_to_local(hw); 825 826 lockdep_assert_wiphy(hw->wiphy); 827 828 if (prev) 829 sdata = vif_to_sdata(prev); 830 831 monitor = rcu_dereference_check(local->monitor_sdata, 832 lockdep_is_held(&hw->wiphy->mtx)); 833 if (monitor && monitor == sdata) 834 return NULL; 835 836 sdata = list_prepare_entry(sdata, &local->interfaces, list); 837 list_for_each_entry_continue(sdata, &local->interfaces, list) { 838 switch (sdata->vif.type) { 839 case NL80211_IFTYPE_MONITOR: 840 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 841 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 842 continue; 843 break; 844 case NL80211_IFTYPE_AP_VLAN: 845 continue; 846 default: 847 break; 848 } 849 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 850 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 851 continue; 852 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 853 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 854 continue; 855 if (ieee80211_sdata_running(sdata) || !active_only) 856 return &sdata->vif; 857 } 858 859 if (monitor && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 860 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 861 monitor->flags & IEEE80211_SDATA_IN_DRIVER)) 862 return &monitor->vif; 863 864 return NULL; 865 } 866 EXPORT_SYMBOL_GPL(__ieee80211_iterate_interfaces); 867 868 static void __iterate_stations(struct ieee80211_local *local, 869 void (*iterator)(void *data, 870 struct ieee80211_sta *sta), 871 void *data) 872 { 873 struct sta_info *sta; 874 875 list_for_each_entry_rcu(sta, &local->sta_list, list, 876 lockdep_is_held(&local->hw.wiphy->mtx)) { 877 if (!sta->uploaded) 878 continue; 879 880 iterator(data, &sta->sta); 881 } 882 } 883 884 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 885 void (*iterator)(void *data, 886 struct ieee80211_sta *sta), 887 void *data) 888 { 889 struct ieee80211_local *local = hw_to_local(hw); 890 891 rcu_read_lock(); 892 __iterate_stations(local, iterator, data); 893 rcu_read_unlock(); 894 } 895 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 896 897 struct ieee80211_sta * 898 __ieee80211_iterate_stations(struct ieee80211_hw *hw, 899 struct ieee80211_sta *prev) 900 { 901 struct ieee80211_local *local = hw_to_local(hw); 902 struct sta_info *sta = NULL; 903 904 lockdep_assert_wiphy(local->hw.wiphy); 905 906 if (prev) 907 sta = container_of(prev, struct sta_info, sta); 908 909 sta = list_prepare_entry(sta, &local->sta_list, list); 910 list_for_each_entry_continue(sta, &local->sta_list, list) { 911 if (!sta->uploaded) 912 continue; 913 914 return &sta->sta; 915 } 916 917 return NULL; 918 } 919 EXPORT_SYMBOL_GPL(__ieee80211_iterate_stations); 920 921 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 922 { 923 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 924 925 if (!ieee80211_sdata_running(sdata) || 926 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 927 return NULL; 928 return &sdata->vif; 929 } 930 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 931 932 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 933 { 934 if (!vif) 935 return NULL; 936 937 return &vif_to_sdata(vif)->wdev; 938 } 939 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 940 941 /* 942 * Nothing should have been stuffed into the workqueue during 943 * the suspend->resume cycle. Since we can't check each caller 944 * of this function if we are already quiescing / suspended, 945 * check here and don't WARN since this can actually happen when 946 * the rx path (for example) is racing against __ieee80211_suspend 947 * and suspending / quiescing was set after the rx path checked 948 * them. 949 */ 950 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 951 { 952 if (local->quiescing || (local->suspended && !local->resuming)) { 953 pr_warn("queueing ieee80211 work while going to suspend\n"); 954 return false; 955 } 956 957 return true; 958 } 959 960 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 961 { 962 struct ieee80211_local *local = hw_to_local(hw); 963 964 if (!ieee80211_can_queue_work(local)) 965 return; 966 967 queue_work(local->workqueue, work); 968 } 969 EXPORT_SYMBOL(ieee80211_queue_work); 970 971 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 972 struct delayed_work *dwork, 973 unsigned long delay) 974 { 975 struct ieee80211_local *local = hw_to_local(hw); 976 977 if (!ieee80211_can_queue_work(local)) 978 return; 979 980 queue_delayed_work(local->workqueue, dwork, delay); 981 } 982 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 983 984 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 985 struct ieee80211_tx_queue_params 986 *qparam, int ac) 987 { 988 struct ieee80211_chanctx_conf *chanctx_conf; 989 const struct ieee80211_reg_rule *rrule; 990 const struct ieee80211_wmm_ac *wmm_ac; 991 u16 center_freq = 0; 992 993 if (sdata->vif.type != NL80211_IFTYPE_AP && 994 sdata->vif.type != NL80211_IFTYPE_STATION) 995 return; 996 997 rcu_read_lock(); 998 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 999 if (chanctx_conf) 1000 center_freq = chanctx_conf->def.chan->center_freq; 1001 1002 if (!center_freq) { 1003 rcu_read_unlock(); 1004 return; 1005 } 1006 1007 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 1008 1009 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 1010 rcu_read_unlock(); 1011 return; 1012 } 1013 1014 if (sdata->vif.type == NL80211_IFTYPE_AP) 1015 wmm_ac = &rrule->wmm_rule.ap[ac]; 1016 else 1017 wmm_ac = &rrule->wmm_rule.client[ac]; 1018 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1019 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1020 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1021 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1022 rcu_read_unlock(); 1023 } 1024 1025 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1026 bool bss_notify, bool enable_qos) 1027 { 1028 struct ieee80211_sub_if_data *sdata = link->sdata; 1029 struct ieee80211_local *local = sdata->local; 1030 struct ieee80211_tx_queue_params qparam; 1031 struct ieee80211_chanctx_conf *chanctx_conf; 1032 int ac; 1033 bool use_11b; 1034 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1035 int aCWmin, aCWmax; 1036 1037 if (!local->ops->conf_tx) 1038 return; 1039 1040 if (local->hw.queues < IEEE80211_NUM_ACS) 1041 return; 1042 1043 memset(&qparam, 0, sizeof(qparam)); 1044 1045 rcu_read_lock(); 1046 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1047 use_11b = (chanctx_conf && 1048 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1049 !link->operating_11g_mode; 1050 rcu_read_unlock(); 1051 1052 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1053 1054 /* Set defaults according to 802.11-2007 Table 7-37 */ 1055 aCWmax = 1023; 1056 if (use_11b) 1057 aCWmin = 31; 1058 else 1059 aCWmin = 15; 1060 1061 /* Configure old 802.11b/g medium access rules. */ 1062 qparam.cw_max = aCWmax; 1063 qparam.cw_min = aCWmin; 1064 qparam.txop = 0; 1065 qparam.aifs = 2; 1066 1067 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1068 /* Update if QoS is enabled. */ 1069 if (enable_qos) { 1070 switch (ac) { 1071 case IEEE80211_AC_BK: 1072 qparam.cw_max = aCWmax; 1073 qparam.cw_min = aCWmin; 1074 qparam.txop = 0; 1075 if (is_ocb) 1076 qparam.aifs = 9; 1077 else 1078 qparam.aifs = 7; 1079 break; 1080 /* never happens but let's not leave undefined */ 1081 default: 1082 case IEEE80211_AC_BE: 1083 qparam.cw_max = aCWmax; 1084 qparam.cw_min = aCWmin; 1085 qparam.txop = 0; 1086 if (is_ocb) 1087 qparam.aifs = 6; 1088 else 1089 qparam.aifs = 3; 1090 break; 1091 case IEEE80211_AC_VI: 1092 qparam.cw_max = aCWmin; 1093 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1094 if (is_ocb) 1095 qparam.txop = 0; 1096 else if (use_11b) 1097 qparam.txop = 6016/32; 1098 else 1099 qparam.txop = 3008/32; 1100 1101 if (is_ocb) 1102 qparam.aifs = 3; 1103 else 1104 qparam.aifs = 2; 1105 break; 1106 case IEEE80211_AC_VO: 1107 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1108 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1109 if (is_ocb) 1110 qparam.txop = 0; 1111 else if (use_11b) 1112 qparam.txop = 3264/32; 1113 else 1114 qparam.txop = 1504/32; 1115 qparam.aifs = 2; 1116 break; 1117 } 1118 } 1119 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1120 1121 qparam.uapsd = false; 1122 1123 link->tx_conf[ac] = qparam; 1124 drv_conf_tx(local, link, ac, &qparam); 1125 } 1126 1127 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1128 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1129 sdata->vif.type != NL80211_IFTYPE_NAN) { 1130 link->conf->qos = enable_qos; 1131 if (bss_notify) 1132 ieee80211_link_info_change_notify(sdata, link, 1133 BSS_CHANGED_QOS); 1134 } 1135 } 1136 1137 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1138 u16 transaction, u16 auth_alg, u16 status, 1139 const u8 *extra, size_t extra_len, const u8 *da, 1140 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1141 u32 tx_flags) 1142 { 1143 struct ieee80211_local *local = sdata->local; 1144 struct sk_buff *skb; 1145 struct ieee80211_mgmt *mgmt; 1146 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1147 struct { 1148 u8 id; 1149 u8 len; 1150 u8 ext_id; 1151 struct ieee80211_multi_link_elem ml; 1152 struct ieee80211_mle_basic_common_info basic; 1153 } __packed mle = { 1154 .id = WLAN_EID_EXTENSION, 1155 .len = sizeof(mle) - 2, 1156 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1157 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1158 .basic.len = sizeof(mle.basic), 1159 }; 1160 bool add_mle; 1161 int err; 1162 1163 add_mle = (multi_link && 1164 !cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK, 1165 extra, extra_len)); 1166 1167 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1168 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1169 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1170 add_mle * sizeof(mle)); 1171 if (!skb) 1172 return; 1173 1174 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1175 1176 mgmt = skb_put_zero(skb, 24 + 6); 1177 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1178 IEEE80211_STYPE_AUTH); 1179 memcpy(mgmt->da, da, ETH_ALEN); 1180 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1181 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1182 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1183 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1184 mgmt->u.auth.status_code = cpu_to_le16(status); 1185 if (extra) 1186 skb_put_data(skb, extra, extra_len); 1187 1188 if (add_mle) { 1189 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1190 skb_put_data(skb, &mle, sizeof(mle)); 1191 } 1192 1193 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1194 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1195 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1196 if (WARN_ON(err)) { 1197 kfree_skb(skb); 1198 return; 1199 } 1200 } 1201 1202 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1203 tx_flags; 1204 ieee80211_tx_skb(sdata, skb); 1205 } 1206 1207 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1208 const u8 *da, const u8 *bssid, 1209 u16 stype, u16 reason, 1210 bool send_frame, u8 *frame_buf) 1211 { 1212 struct ieee80211_local *local = sdata->local; 1213 struct sk_buff *skb; 1214 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1215 1216 /* build frame */ 1217 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1218 mgmt->duration = 0; /* initialize only */ 1219 mgmt->seq_ctrl = 0; /* initialize only */ 1220 memcpy(mgmt->da, da, ETH_ALEN); 1221 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1222 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1223 /* u.deauth.reason_code == u.disassoc.reason_code */ 1224 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1225 1226 if (send_frame) { 1227 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1228 IEEE80211_DEAUTH_FRAME_LEN); 1229 if (!skb) 1230 return; 1231 1232 skb_reserve(skb, local->hw.extra_tx_headroom); 1233 1234 /* copy in frame */ 1235 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1236 1237 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1238 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1239 IEEE80211_SKB_CB(skb)->flags |= 1240 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1241 1242 ieee80211_tx_skb(sdata, skb); 1243 } 1244 } 1245 1246 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1247 struct ieee80211_sta_s1g_cap *s1g_cap) 1248 { 1249 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1250 return -ENOBUFS; 1251 1252 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1253 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1254 1255 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1256 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1257 1258 return 0; 1259 } 1260 1261 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1262 struct ieee80211_sub_if_data *sdata, 1263 const u8 *ie, size_t ie_len, 1264 size_t *offset, 1265 enum nl80211_band band, 1266 u32 rate_mask, 1267 struct cfg80211_chan_def *chandef, 1268 u32 flags) 1269 { 1270 struct ieee80211_local *local = sdata->local; 1271 struct ieee80211_supported_band *sband; 1272 int i, err; 1273 size_t noffset; 1274 bool have_80mhz = false; 1275 1276 *offset = 0; 1277 1278 sband = local->hw.wiphy->bands[band]; 1279 if (WARN_ON_ONCE(!sband)) 1280 return 0; 1281 1282 /* For direct scan add S1G IE and consider its override bits */ 1283 if (band == NL80211_BAND_S1GHZ) 1284 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1285 1286 err = ieee80211_put_srates_elem(skb, sband, 0, 1287 ~rate_mask, WLAN_EID_SUPP_RATES); 1288 if (err) 1289 return err; 1290 1291 /* insert "request information" if in custom IEs */ 1292 if (ie && ie_len) { 1293 static const u8 before_extrates[] = { 1294 WLAN_EID_SSID, 1295 WLAN_EID_SUPP_RATES, 1296 WLAN_EID_REQUEST, 1297 }; 1298 noffset = ieee80211_ie_split(ie, ie_len, 1299 before_extrates, 1300 ARRAY_SIZE(before_extrates), 1301 *offset); 1302 if (skb_tailroom(skb) < noffset - *offset) 1303 return -ENOBUFS; 1304 skb_put_data(skb, ie + *offset, noffset - *offset); 1305 *offset = noffset; 1306 } 1307 1308 err = ieee80211_put_srates_elem(skb, sband, 0, 1309 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1310 if (err) 1311 return err; 1312 1313 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1314 if (skb_tailroom(skb) < 3) 1315 return -ENOBUFS; 1316 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1317 skb_put_u8(skb, 1); 1318 skb_put_u8(skb, 1319 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1320 } 1321 1322 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1323 return 0; 1324 1325 /* insert custom IEs that go before HT */ 1326 if (ie && ie_len) { 1327 static const u8 before_ht[] = { 1328 /* 1329 * no need to list the ones split off already 1330 * (or generated here) 1331 */ 1332 WLAN_EID_DS_PARAMS, 1333 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1334 }; 1335 noffset = ieee80211_ie_split(ie, ie_len, 1336 before_ht, ARRAY_SIZE(before_ht), 1337 *offset); 1338 if (skb_tailroom(skb) < noffset - *offset) 1339 return -ENOBUFS; 1340 skb_put_data(skb, ie + *offset, noffset - *offset); 1341 *offset = noffset; 1342 } 1343 1344 if (sband->ht_cap.ht_supported) { 1345 u8 *pos; 1346 1347 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1348 return -ENOBUFS; 1349 1350 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1351 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1352 sband->ht_cap.cap); 1353 } 1354 1355 /* insert custom IEs that go before VHT */ 1356 if (ie && ie_len) { 1357 static const u8 before_vht[] = { 1358 /* 1359 * no need to list the ones split off already 1360 * (or generated here) 1361 */ 1362 WLAN_EID_BSS_COEX_2040, 1363 WLAN_EID_EXT_CAPABILITY, 1364 WLAN_EID_SSID_LIST, 1365 WLAN_EID_CHANNEL_USAGE, 1366 WLAN_EID_INTERWORKING, 1367 WLAN_EID_MESH_ID, 1368 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1369 }; 1370 noffset = ieee80211_ie_split(ie, ie_len, 1371 before_vht, ARRAY_SIZE(before_vht), 1372 *offset); 1373 if (skb_tailroom(skb) < noffset - *offset) 1374 return -ENOBUFS; 1375 skb_put_data(skb, ie + *offset, noffset - *offset); 1376 *offset = noffset; 1377 } 1378 1379 /* Check if any channel in this sband supports at least 80 MHz */ 1380 for (i = 0; i < sband->n_channels; i++) { 1381 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1382 IEEE80211_CHAN_NO_80MHZ)) 1383 continue; 1384 1385 have_80mhz = true; 1386 break; 1387 } 1388 1389 if (sband->vht_cap.vht_supported && have_80mhz) { 1390 u8 *pos; 1391 1392 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1393 return -ENOBUFS; 1394 1395 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1396 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1397 sband->vht_cap.cap); 1398 } 1399 1400 /* insert custom IEs that go before HE */ 1401 if (ie && ie_len) { 1402 static const u8 before_he[] = { 1403 /* 1404 * no need to list the ones split off before VHT 1405 * or generated here 1406 */ 1407 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1408 WLAN_EID_AP_CSN, 1409 /* TODO: add 11ah/11aj/11ak elements */ 1410 }; 1411 noffset = ieee80211_ie_split(ie, ie_len, 1412 before_he, ARRAY_SIZE(before_he), 1413 *offset); 1414 if (skb_tailroom(skb) < noffset - *offset) 1415 return -ENOBUFS; 1416 skb_put_data(skb, ie + *offset, noffset - *offset); 1417 *offset = noffset; 1418 } 1419 1420 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1421 IEEE80211_CHAN_NO_HE)) { 1422 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1423 if (err) 1424 return err; 1425 } 1426 1427 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1428 IEEE80211_CHAN_NO_HE | 1429 IEEE80211_CHAN_NO_EHT)) { 1430 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1431 if (err) 1432 return err; 1433 } 1434 1435 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1436 if (err) 1437 return err; 1438 1439 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1440 IEEE80211_CHAN_NO_UHR)) { 1441 err = ieee80211_put_uhr_cap(skb, sdata, sband); 1442 if (err) 1443 return err; 1444 } 1445 1446 /* 1447 * If adding more here, adjust code in main.c 1448 * that calculates local->scan_ies_len. 1449 */ 1450 1451 return 0; 1452 } 1453 1454 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1455 struct ieee80211_sub_if_data *sdata, 1456 struct ieee80211_scan_ies *ie_desc, 1457 const u8 *ie, size_t ie_len, 1458 u8 bands_used, u32 *rate_masks, 1459 struct cfg80211_chan_def *chandef, 1460 u32 flags) 1461 { 1462 size_t custom_ie_offset = 0; 1463 int i, err; 1464 1465 memset(ie_desc, 0, sizeof(*ie_desc)); 1466 1467 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1468 if (bands_used & BIT(i)) { 1469 ie_desc->ies[i] = skb_tail_pointer(skb); 1470 err = ieee80211_put_preq_ies_band(skb, sdata, 1471 ie, ie_len, 1472 &custom_ie_offset, 1473 i, rate_masks[i], 1474 chandef, flags); 1475 if (err) 1476 return err; 1477 ie_desc->len[i] = skb_tail_pointer(skb) - 1478 ie_desc->ies[i]; 1479 } 1480 } 1481 1482 /* add any remaining custom IEs */ 1483 if (ie && ie_len) { 1484 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1485 "not enough space for preq custom IEs\n")) 1486 return -ENOBUFS; 1487 ie_desc->common_ies = skb_tail_pointer(skb); 1488 skb_put_data(skb, ie + custom_ie_offset, 1489 ie_len - custom_ie_offset); 1490 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1491 ie_desc->common_ies; 1492 } 1493 1494 return 0; 1495 }; 1496 1497 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1498 size_t buffer_len, 1499 struct ieee80211_scan_ies *ie_desc, 1500 const u8 *ie, size_t ie_len, 1501 u8 bands_used, u32 *rate_masks, 1502 struct cfg80211_chan_def *chandef, 1503 u32 flags) 1504 { 1505 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1506 uintptr_t offs; 1507 int ret, i; 1508 u8 *start; 1509 1510 if (!skb) 1511 return -ENOMEM; 1512 1513 start = skb_tail_pointer(skb); 1514 memset(start, 0, skb_tailroom(skb)); 1515 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1516 bands_used, rate_masks, chandef, 1517 flags); 1518 if (ret < 0) { 1519 goto out; 1520 } 1521 1522 if (skb->len > buffer_len) { 1523 ret = -ENOBUFS; 1524 goto out; 1525 } 1526 1527 memcpy(buffer, start, skb->len); 1528 1529 /* adjust ie_desc for copy */ 1530 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1531 offs = ie_desc->ies[i] - start; 1532 ie_desc->ies[i] = buffer + offs; 1533 } 1534 offs = ie_desc->common_ies - start; 1535 ie_desc->common_ies = buffer + offs; 1536 1537 ret = skb->len; 1538 out: 1539 consume_skb(skb); 1540 return ret; 1541 } 1542 1543 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1544 const u8 *src, const u8 *dst, 1545 u32 ratemask, 1546 struct ieee80211_channel *chan, 1547 const u8 *ssid, size_t ssid_len, 1548 const u8 *ie, size_t ie_len, 1549 u32 flags) 1550 { 1551 struct ieee80211_local *local = sdata->local; 1552 struct cfg80211_chan_def chandef; 1553 struct sk_buff *skb; 1554 struct ieee80211_mgmt *mgmt; 1555 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1556 struct ieee80211_scan_ies dummy_ie_desc; 1557 1558 /* 1559 * Do not send DS Channel parameter for directed probe requests 1560 * in order to maximize the chance that we get a response. Some 1561 * badly-behaved APs don't respond when this parameter is included. 1562 */ 1563 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1564 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1565 chandef.chan = NULL; 1566 else 1567 chandef.chan = chan; 1568 1569 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1570 local->scan_ies_len + ie_len); 1571 if (!skb) 1572 return NULL; 1573 1574 rate_masks[chan->band] = ratemask; 1575 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1576 ie, ie_len, BIT(chan->band), 1577 rate_masks, &chandef, flags); 1578 1579 if (dst) { 1580 mgmt = (struct ieee80211_mgmt *) skb->data; 1581 memcpy(mgmt->da, dst, ETH_ALEN); 1582 memcpy(mgmt->bssid, dst, ETH_ALEN); 1583 } 1584 1585 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1586 1587 return skb; 1588 } 1589 1590 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1591 struct ieee802_11_elems *elems, 1592 enum nl80211_band band, u32 *basic_rates) 1593 { 1594 struct ieee80211_supported_band *sband; 1595 size_t num_rates; 1596 u32 supp_rates; 1597 int i, j; 1598 1599 sband = sdata->local->hw.wiphy->bands[band]; 1600 if (WARN_ON(!sband)) 1601 return 1; 1602 1603 num_rates = sband->n_bitrates; 1604 supp_rates = 0; 1605 for (i = 0; i < elems->supp_rates_len + 1606 elems->ext_supp_rates_len; i++) { 1607 u8 rate = 0; 1608 int own_rate; 1609 bool is_basic; 1610 if (i < elems->supp_rates_len) 1611 rate = elems->supp_rates[i]; 1612 else if (elems->ext_supp_rates) 1613 rate = elems->ext_supp_rates 1614 [i - elems->supp_rates_len]; 1615 own_rate = 5 * (rate & 0x7f); 1616 is_basic = !!(rate & 0x80); 1617 1618 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1619 continue; 1620 1621 for (j = 0; j < num_rates; j++) { 1622 int brate = sband->bitrates[j].bitrate; 1623 1624 if (brate == own_rate) { 1625 supp_rates |= BIT(j); 1626 if (basic_rates && is_basic) 1627 *basic_rates |= BIT(j); 1628 } 1629 } 1630 } 1631 return supp_rates; 1632 } 1633 1634 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend) 1635 { 1636 local_bh_disable(); 1637 ieee80211_handle_queued_frames(local); 1638 local_bh_enable(); 1639 1640 ieee80211_led_radio(local, false); 1641 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1642 1643 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1644 1645 flush_workqueue(local->workqueue); 1646 wiphy_work_flush(local->hw.wiphy, NULL); 1647 drv_stop(local, suspend); 1648 } 1649 1650 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1651 bool aborted) 1652 { 1653 /* It's possible that we don't handle the scan completion in 1654 * time during suspend, so if it's still marked as completed 1655 * here, queue the work and flush it to clean things up. 1656 * Instead of calling the worker function directly here, we 1657 * really queue it to avoid potential races with other flows 1658 * scheduling the same work. 1659 */ 1660 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1661 /* If coming from reconfiguration failure, abort the scan so 1662 * we don't attempt to continue a partial HW scan - which is 1663 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1664 * completed scan, and a 5 GHz portion is still pending. 1665 */ 1666 if (aborted) 1667 set_bit(SCAN_ABORTED, &local->scanning); 1668 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1669 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1670 } 1671 } 1672 1673 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1674 { 1675 struct ieee80211_sub_if_data *sdata; 1676 struct ieee80211_chanctx *ctx; 1677 1678 lockdep_assert_wiphy(local->hw.wiphy); 1679 1680 /* 1681 * We get here if during resume the device can't be restarted properly. 1682 * We might also get here if this happens during HW reset, which is a 1683 * slightly different situation and we need to drop all connections in 1684 * the latter case. 1685 * 1686 * Ask cfg80211 to turn off all interfaces, this will result in more 1687 * warnings but at least we'll then get into a clean stopped state. 1688 */ 1689 1690 local->resuming = false; 1691 local->suspended = false; 1692 local->in_reconfig = false; 1693 local->reconfig_failure = true; 1694 1695 ieee80211_flush_completed_scan(local, true); 1696 1697 /* scheduled scan clearly can't be running any more, but tell 1698 * cfg80211 and clear local state 1699 */ 1700 ieee80211_sched_scan_end(local); 1701 1702 list_for_each_entry(sdata, &local->interfaces, list) 1703 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1704 1705 /* Mark channel contexts as not being in the driver any more to avoid 1706 * removing them from the driver during the shutdown process... 1707 */ 1708 list_for_each_entry(ctx, &local->chanctx_list, list) 1709 ctx->driver_present = false; 1710 } 1711 1712 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1713 struct ieee80211_sub_if_data *sdata, 1714 struct ieee80211_link_data *link) 1715 { 1716 struct ieee80211_chanctx_conf *conf; 1717 struct ieee80211_chanctx *ctx; 1718 1719 lockdep_assert_wiphy(local->hw.wiphy); 1720 1721 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1722 lockdep_is_held(&local->hw.wiphy->mtx)); 1723 if (conf) { 1724 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1725 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1726 } 1727 } 1728 1729 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1730 { 1731 struct ieee80211_local *local = sdata->local; 1732 struct sta_info *sta; 1733 1734 lockdep_assert_wiphy(local->hw.wiphy); 1735 1736 /* add STAs back */ 1737 list_for_each_entry(sta, &local->sta_list, list) { 1738 enum ieee80211_sta_state state; 1739 1740 if (!sta->uploaded || sta->sdata != sdata) 1741 continue; 1742 1743 for (state = IEEE80211_STA_NOTEXIST; 1744 state < sta->sta_state; state++) 1745 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1746 state + 1)); 1747 } 1748 } 1749 1750 static int 1751 ieee80211_reconfig_nan_offload_de(struct ieee80211_sub_if_data *sdata) 1752 { 1753 struct cfg80211_nan_func *func, **funcs; 1754 int res, id, i = 0; 1755 1756 funcs = kzalloc_objs(*funcs, sdata->local->hw.max_nan_de_entries + 1); 1757 if (!funcs) 1758 return -ENOMEM; 1759 1760 /* Add all the functions: 1761 * This is a little bit ugly. We need to call a potentially sleeping 1762 * callback for each NAN function, so we can't hold the spinlock. 1763 */ 1764 spin_lock_bh(&sdata->u.nan.de.func_lock); 1765 1766 idr_for_each_entry(&sdata->u.nan.de.function_inst_ids, func, id) 1767 funcs[i++] = func; 1768 1769 spin_unlock_bh(&sdata->u.nan.de.func_lock); 1770 1771 for (i = 0; funcs[i]; i++) { 1772 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1773 if (WARN_ON(res)) 1774 ieee80211_nan_func_terminated(&sdata->vif, 1775 funcs[i]->instance_id, 1776 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1777 GFP_KERNEL); 1778 } 1779 1780 kfree(funcs); 1781 return res; 1782 } 1783 1784 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1785 { 1786 struct ieee80211_local *local = sdata->local; 1787 struct ieee80211_sub_if_data *ndi_sdata; 1788 struct sta_info *sta; 1789 int res; 1790 1791 res = drv_start_nan(local, sdata, &sdata->u.nan.conf); 1792 if (WARN_ON(res)) 1793 return res; 1794 1795 if (!(sdata->local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) 1796 return ieee80211_reconfig_nan_offload_de(sdata); 1797 1798 drv_vif_cfg_changed(sdata->local, sdata, BSS_CHANGED_NAN_LOCAL_SCHED); 1799 1800 /* Now we can add all the NDIs to the driver */ 1801 list_for_each_entry(ndi_sdata, &local->interfaces, list) { 1802 if (ndi_sdata->vif.type == NL80211_IFTYPE_NAN_DATA) { 1803 res = drv_add_interface(local, ndi_sdata); 1804 if (WARN_ON(res)) 1805 return res; 1806 } 1807 } 1808 1809 /* Add NMI stations (stations on the NAN interface) */ 1810 list_for_each_entry(sta, &local->sta_list, list) { 1811 enum ieee80211_sta_state state; 1812 1813 if (!sta->uploaded || sta->sdata != sdata) 1814 continue; 1815 1816 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; 1817 state++) { 1818 res = drv_sta_state(local, sdata, sta, state, 1819 state + 1); 1820 if (WARN_ON(res)) 1821 return res; 1822 } 1823 1824 /* Add peer schedules for NMI stations that have them */ 1825 if (!sta->sta.nan_sched) 1826 continue; 1827 1828 res = drv_nan_peer_sched_changed(local, sdata, sta); 1829 if (WARN_ON(res)) 1830 return res; 1831 } 1832 1833 /* Add NDI stations (stations on NAN_DATA interfaces) */ 1834 list_for_each_entry(sta, &local->sta_list, list) { 1835 enum ieee80211_sta_state state; 1836 1837 if (!sta->uploaded || 1838 sta->sdata->vif.type != NL80211_IFTYPE_NAN_DATA) 1839 continue; 1840 1841 if (WARN_ON(!sta->sta.nmi)) 1842 continue; 1843 1844 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; 1845 state++) { 1846 res = drv_sta_state(local, sta->sdata, sta, state, 1847 state + 1); 1848 if (WARN_ON(res)) 1849 return res; 1850 } 1851 } 1852 1853 return 0; 1854 } 1855 1856 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1857 struct ieee80211_sub_if_data *sdata, 1858 u64 changed) 1859 { 1860 int link_id; 1861 1862 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1863 struct ieee80211_link_data *link; 1864 1865 if (!(sdata->vif.active_links & BIT(link_id))) 1866 continue; 1867 1868 link = sdata_dereference(sdata->link[link_id], sdata); 1869 if (!link) 1870 continue; 1871 1872 if (rcu_access_pointer(link->u.ap.beacon)) 1873 drv_start_ap(local, sdata, link->conf); 1874 1875 if (!link->conf->enable_beacon) 1876 continue; 1877 1878 changed |= BSS_CHANGED_BEACON | 1879 BSS_CHANGED_BEACON_ENABLED; 1880 1881 ieee80211_link_info_change_notify(sdata, link, changed); 1882 } 1883 } 1884 1885 int ieee80211_reconfig(struct ieee80211_local *local) 1886 { 1887 struct ieee80211_hw *hw = &local->hw; 1888 struct ieee80211_sub_if_data *sdata; 1889 struct ieee80211_chanctx *ctx; 1890 struct sta_info *sta; 1891 int res, i; 1892 bool reconfig_due_to_wowlan = false; 1893 struct ieee80211_sub_if_data *sched_scan_sdata; 1894 struct cfg80211_sched_scan_request *sched_scan_req; 1895 bool sched_scan_stopped = false; 1896 bool suspended = local->suspended; 1897 bool in_reconfig = false; 1898 1899 lockdep_assert_wiphy(local->hw.wiphy); 1900 1901 /* nothing to do if HW shouldn't run */ 1902 if (!local->open_count) 1903 goto wake_up; 1904 1905 #ifdef CONFIG_PM 1906 if (suspended) 1907 local->resuming = true; 1908 1909 if (local->wowlan) { 1910 /* 1911 * In the wowlan case, both mac80211 and the device 1912 * are functional when the resume op is called, so 1913 * clear local->suspended so the device could operate 1914 * normally (e.g. pass rx frames). 1915 */ 1916 local->suspended = false; 1917 res = drv_resume(local); 1918 local->wowlan = false; 1919 if (res < 0) { 1920 local->resuming = false; 1921 return res; 1922 } 1923 if (res == 0) 1924 goto wake_up; 1925 WARN_ON(res > 1); 1926 /* 1927 * res is 1, which means the driver requested 1928 * to go through a regular reset on wakeup. 1929 * restore local->suspended in this case. 1930 */ 1931 reconfig_due_to_wowlan = true; 1932 local->suspended = true; 1933 } 1934 #endif 1935 1936 /* 1937 * In case of hw_restart during suspend (without wowlan), 1938 * cancel restart work, as we are reconfiguring the device 1939 * anyway. 1940 * Note that restart_work is scheduled on a frozen workqueue, 1941 * so we can't deadlock in this case. 1942 */ 1943 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1944 cancel_work_sync(&local->restart_work); 1945 1946 local->started = false; 1947 1948 /* 1949 * Upon resume hardware can sometimes be goofy due to 1950 * various platform / driver / bus issues, so restarting 1951 * the device may at times not work immediately. Propagate 1952 * the error. 1953 */ 1954 res = drv_start(local); 1955 if (res) { 1956 if (suspended) 1957 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1958 else 1959 WARN(1, "Hardware became unavailable during restart.\n"); 1960 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 1961 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1962 false); 1963 ieee80211_handle_reconfig_failure(local); 1964 return res; 1965 } 1966 1967 /* setup fragmentation threshold */ 1968 drv_set_frag_threshold(local, -1, hw->wiphy->frag_threshold); 1969 1970 /* setup RTS threshold */ 1971 if (hw->wiphy->n_radio > 0) { 1972 for (i = 0; i < hw->wiphy->n_radio; i++) { 1973 u32 rts_threshold = 1974 hw->wiphy->radio_cfg[i].rts_threshold; 1975 1976 drv_set_rts_threshold(local, i, rts_threshold); 1977 } 1978 } else { 1979 drv_set_rts_threshold(local, -1, hw->wiphy->rts_threshold); 1980 } 1981 1982 /* reset coverage class */ 1983 drv_set_coverage_class(local, -1, hw->wiphy->coverage_class); 1984 1985 ieee80211_led_radio(local, true); 1986 ieee80211_mod_tpt_led_trig(local, 1987 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1988 1989 /* add interfaces */ 1990 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1991 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { 1992 /* in HW restart it exists already */ 1993 WARN_ON(local->resuming); 1994 res = drv_add_interface(local, sdata); 1995 if (WARN_ON(res)) { 1996 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1997 synchronize_net(); 1998 kfree(sdata); 1999 } 2000 } 2001 2002 list_for_each_entry(sdata, &local->interfaces, list) { 2003 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 2004 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 2005 continue; 2006 /* These vifs can't be added before NAN was started */ 2007 if (sdata->vif.type == NL80211_IFTYPE_NAN_DATA) 2008 continue; 2009 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2010 ieee80211_sdata_running(sdata)) { 2011 res = drv_add_interface(local, sdata); 2012 if (WARN_ON(res)) 2013 break; 2014 } 2015 } 2016 2017 /* If adding any of the interfaces failed above, roll back and 2018 * report failure. 2019 */ 2020 if (res) { 2021 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 2022 list) { 2023 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 2024 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 2025 continue; 2026 if (sdata->vif.type == NL80211_IFTYPE_NAN_DATA) 2027 continue; 2028 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2029 ieee80211_sdata_running(sdata)) 2030 drv_remove_interface(local, sdata); 2031 } 2032 ieee80211_handle_reconfig_failure(local); 2033 return res; 2034 } 2035 2036 /* add channel contexts */ 2037 list_for_each_entry(ctx, &local->chanctx_list, list) 2038 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 2039 WARN_ON(drv_add_chanctx(local, ctx)); 2040 2041 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 2042 if (sdata && ieee80211_sdata_running(sdata)) 2043 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 2044 2045 /* reconfigure hardware */ 2046 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 2047 IEEE80211_CONF_CHANGE_MONITOR | 2048 IEEE80211_CONF_CHANGE_PS | 2049 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 2050 IEEE80211_CONF_CHANGE_IDLE); 2051 2052 ieee80211_configure_filter(local); 2053 2054 /* Finally also reconfigure all the BSS information */ 2055 list_for_each_entry(sdata, &local->interfaces, list) { 2056 /* common change flags for all interface types - link only */ 2057 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 2058 BSS_CHANGED_ERP_PREAMBLE | 2059 BSS_CHANGED_ERP_SLOT | 2060 BSS_CHANGED_HT | 2061 BSS_CHANGED_BASIC_RATES | 2062 BSS_CHANGED_BEACON_INT | 2063 BSS_CHANGED_BSSID | 2064 BSS_CHANGED_CQM | 2065 BSS_CHANGED_QOS | 2066 BSS_CHANGED_TXPOWER | 2067 BSS_CHANGED_MCAST_RATE; 2068 struct ieee80211_link_data *link = NULL; 2069 unsigned int link_id; 2070 u32 active_links = 0; 2071 2072 if (!ieee80211_sdata_running(sdata)) 2073 continue; 2074 2075 if (ieee80211_vif_is_mld(&sdata->vif)) { 2076 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 2077 [0] = &sdata->vif.bss_conf, 2078 }; 2079 2080 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 2081 /* start with a single active link */ 2082 active_links = sdata->vif.active_links; 2083 link_id = ffs(active_links) - 1; 2084 sdata->vif.active_links = BIT(link_id); 2085 } 2086 2087 drv_change_vif_links(local, sdata, 0, 2088 sdata->vif.active_links, 2089 old); 2090 } 2091 2092 sdata->restart_active_links = active_links; 2093 2094 for (link_id = 0; 2095 link_id < ARRAY_SIZE(sdata->vif.link_conf); 2096 link_id++) { 2097 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 2098 continue; 2099 2100 link = sdata_dereference(sdata->link[link_id], sdata); 2101 if (!link) 2102 continue; 2103 2104 ieee80211_assign_chanctx(local, sdata, link); 2105 } 2106 2107 switch (sdata->vif.type) { 2108 case NL80211_IFTYPE_AP_VLAN: 2109 case NL80211_IFTYPE_MONITOR: 2110 break; 2111 case NL80211_IFTYPE_NAN: 2112 case NL80211_IFTYPE_NAN_DATA: 2113 /* NAN stations are handled later */ 2114 break; 2115 case NL80211_IFTYPE_ADHOC: 2116 if (sdata->vif.cfg.ibss_joined) 2117 WARN_ON(drv_join_ibss(local, sdata)); 2118 fallthrough; 2119 default: 2120 ieee80211_reconfig_stations(sdata); 2121 fallthrough; 2122 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2123 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2124 drv_conf_tx(local, &sdata->deflink, i, 2125 &sdata->deflink.tx_conf[i]); 2126 break; 2127 } 2128 2129 if (sdata->vif.bss_conf.mu_mimo_owner) 2130 changed |= BSS_CHANGED_MU_GROUPS; 2131 2132 if (!ieee80211_vif_is_mld(&sdata->vif)) 2133 changed |= BSS_CHANGED_IDLE; 2134 2135 switch (sdata->vif.type) { 2136 case NL80211_IFTYPE_STATION: 2137 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2138 changed |= BSS_CHANGED_ASSOC | 2139 BSS_CHANGED_ARP_FILTER | 2140 BSS_CHANGED_PS; 2141 2142 /* Re-send beacon info report to the driver */ 2143 if (sdata->deflink.u.mgd.have_beacon) 2144 changed |= BSS_CHANGED_BEACON_INFO; 2145 2146 if (sdata->vif.bss_conf.max_idle_period || 2147 sdata->vif.bss_conf.protected_keep_alive) 2148 changed |= BSS_CHANGED_KEEP_ALIVE; 2149 2150 ieee80211_bss_info_change_notify(sdata, 2151 changed); 2152 } else if (!WARN_ON(!link)) { 2153 if (link->conf->npca.enabled) 2154 changed |= BSS_CHANGED_NPCA; 2155 2156 ieee80211_link_info_change_notify(sdata, link, 2157 changed); 2158 changed = BSS_CHANGED_ASSOC | 2159 BSS_CHANGED_IDLE | 2160 BSS_CHANGED_PS | 2161 BSS_CHANGED_ARP_FILTER; 2162 ieee80211_vif_cfg_change_notify(sdata, changed); 2163 } 2164 break; 2165 case NL80211_IFTYPE_OCB: 2166 changed |= BSS_CHANGED_OCB; 2167 ieee80211_bss_info_change_notify(sdata, changed); 2168 break; 2169 case NL80211_IFTYPE_ADHOC: 2170 changed |= BSS_CHANGED_IBSS; 2171 fallthrough; 2172 case NL80211_IFTYPE_AP: 2173 changed |= BSS_CHANGED_P2P_PS; 2174 2175 if (ieee80211_vif_is_mld(&sdata->vif)) 2176 ieee80211_vif_cfg_change_notify(sdata, 2177 BSS_CHANGED_SSID); 2178 else 2179 changed |= BSS_CHANGED_SSID; 2180 2181 if (sdata->vif.bss_conf.ftm_responder == 1 && 2182 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2183 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2184 changed |= BSS_CHANGED_FTM_RESPONDER; 2185 2186 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2187 changed |= BSS_CHANGED_AP_PROBE_RESP; 2188 2189 if (ieee80211_vif_is_mld(&sdata->vif)) { 2190 ieee80211_reconfig_ap_links(local, 2191 sdata, 2192 changed); 2193 break; 2194 } 2195 2196 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2197 drv_start_ap(local, sdata, 2198 sdata->deflink.conf); 2199 } 2200 fallthrough; 2201 case NL80211_IFTYPE_MESH_POINT: 2202 if (sdata->vif.bss_conf.enable_beacon) { 2203 changed |= BSS_CHANGED_BEACON | 2204 BSS_CHANGED_BEACON_ENABLED; 2205 ieee80211_bss_info_change_notify(sdata, changed); 2206 } 2207 break; 2208 case NL80211_IFTYPE_NAN: 2209 WARN_ON(ieee80211_reconfig_nan(sdata)); 2210 break; 2211 case NL80211_IFTYPE_NAN_DATA: 2212 case NL80211_IFTYPE_AP_VLAN: 2213 case NL80211_IFTYPE_MONITOR: 2214 case NL80211_IFTYPE_P2P_DEVICE: 2215 case NL80211_IFTYPE_PD: 2216 /* nothing to do */ 2217 break; 2218 case NL80211_IFTYPE_UNSPECIFIED: 2219 case NUM_NL80211_IFTYPES: 2220 case NL80211_IFTYPE_P2P_CLIENT: 2221 case NL80211_IFTYPE_P2P_GO: 2222 case NL80211_IFTYPE_WDS: 2223 WARN_ON(1); 2224 break; 2225 } 2226 } 2227 2228 ieee80211_recalc_ps(local); 2229 2230 /* 2231 * The sta might be in psm against the ap (e.g. because 2232 * this was the state before a hw restart), so we 2233 * explicitly send a null packet in order to make sure 2234 * it'll sync against the ap (and get out of psm). 2235 */ 2236 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2237 list_for_each_entry(sdata, &local->interfaces, list) { 2238 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2239 continue; 2240 if (!sdata->u.mgd.associated) 2241 continue; 2242 2243 ieee80211_send_nullfunc(local, sdata, false); 2244 } 2245 } 2246 2247 /* APs are now beaconing, add back stations */ 2248 list_for_each_entry(sdata, &local->interfaces, list) { 2249 if (!ieee80211_sdata_running(sdata)) 2250 continue; 2251 2252 switch (sdata->vif.type) { 2253 case NL80211_IFTYPE_AP_VLAN: 2254 case NL80211_IFTYPE_AP: 2255 ieee80211_reconfig_stations(sdata); 2256 break; 2257 default: 2258 break; 2259 } 2260 } 2261 2262 /* add back keys */ 2263 list_for_each_entry(sdata, &local->interfaces, list) 2264 ieee80211_reenable_keys(sdata); 2265 2266 /* re-enable multi-link for client interfaces */ 2267 list_for_each_entry(sdata, &local->interfaces, list) { 2268 if (sdata->restart_active_links) 2269 ieee80211_set_active_links(&sdata->vif, 2270 sdata->restart_active_links); 2271 /* 2272 * If a link switch was scheduled before the restart, and ran 2273 * before reconfig, it will do nothing, so re-schedule. 2274 */ 2275 if (sdata->desired_active_links) 2276 wiphy_work_queue(sdata->local->hw.wiphy, 2277 &sdata->activate_links_work); 2278 } 2279 2280 /* Reconfigure sched scan if it was interrupted by FW restart */ 2281 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2282 lockdep_is_held(&local->hw.wiphy->mtx)); 2283 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2284 lockdep_is_held(&local->hw.wiphy->mtx)); 2285 if (sched_scan_sdata && sched_scan_req) 2286 /* 2287 * Sched scan stopped, but we don't want to report it. Instead, 2288 * we're trying to reschedule. However, if more than one scan 2289 * plan was set, we cannot reschedule since we don't know which 2290 * scan plan was currently running (and some scan plans may have 2291 * already finished). 2292 */ 2293 if (sched_scan_req->n_scan_plans > 1 || 2294 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2295 sched_scan_req)) { 2296 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2297 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2298 sched_scan_stopped = true; 2299 } 2300 2301 if (sched_scan_stopped) 2302 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2303 2304 wake_up: 2305 /* 2306 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2307 * sessions can be established after a resume. 2308 * 2309 * Also tear down aggregation sessions since reconfiguring 2310 * them in a hardware restart scenario is not easily done 2311 * right now, and the hardware will have lost information 2312 * about the sessions, but we and the AP still think they 2313 * are active. This is really a workaround though. 2314 */ 2315 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2316 list_for_each_entry(sta, &local->sta_list, list) { 2317 if (!local->resuming) 2318 ieee80211_sta_tear_down_BA_sessions( 2319 sta, AGG_STOP_LOCAL_REQUEST); 2320 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2321 } 2322 } 2323 2324 /* 2325 * If this is for hw restart things are still running. 2326 * We may want to change that later, however. 2327 */ 2328 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2329 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2330 2331 if (local->in_reconfig) { 2332 in_reconfig = local->in_reconfig; 2333 local->in_reconfig = false; 2334 barrier(); 2335 2336 ieee80211_reconfig_roc(local); 2337 2338 /* Requeue all works */ 2339 list_for_each_entry(sdata, &local->interfaces, list) { 2340 if (ieee80211_sdata_running(sdata)) 2341 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2342 } 2343 } 2344 2345 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2346 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2347 false); 2348 2349 if (in_reconfig) { 2350 list_for_each_entry(sdata, &local->interfaces, list) { 2351 if (!ieee80211_sdata_running(sdata)) 2352 continue; 2353 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2354 ieee80211_sta_restart(sdata); 2355 } 2356 } 2357 2358 /* Passing NULL means an interface is picked for configuration */ 2359 if (local->virt_monitors > 0 && 2360 local->virt_monitors == local->open_count) 2361 ieee80211_add_virtual_monitor(local, NULL); 2362 2363 if (!suspended) 2364 return 0; 2365 2366 #ifdef CONFIG_PM 2367 /* first set suspended false, then resuming */ 2368 local->suspended = false; 2369 mb(); 2370 local->resuming = false; 2371 2372 ieee80211_flush_completed_scan(local, false); 2373 2374 if (local->open_count && !reconfig_due_to_wowlan) 2375 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2376 2377 list_for_each_entry(sdata, &local->interfaces, list) { 2378 if (!ieee80211_sdata_running(sdata)) 2379 continue; 2380 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2381 ieee80211_sta_restart(sdata); 2382 } 2383 2384 mod_timer(&local->sta_cleanup, jiffies + 1); 2385 #else 2386 WARN_ON(1); 2387 #endif 2388 2389 return 0; 2390 } 2391 2392 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2393 { 2394 struct ieee80211_sub_if_data *sdata; 2395 struct ieee80211_local *local; 2396 struct ieee80211_key *key; 2397 2398 if (WARN_ON(!vif)) 2399 return; 2400 2401 sdata = vif_to_sdata(vif); 2402 local = sdata->local; 2403 2404 lockdep_assert_wiphy(local->hw.wiphy); 2405 2406 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2407 !local->resuming)) 2408 return; 2409 2410 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2411 !local->in_reconfig)) 2412 return; 2413 2414 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2415 return; 2416 2417 sdata->flags |= flag; 2418 2419 list_for_each_entry(key, &sdata->key_list, list) 2420 key->flags |= KEY_FLAG_TAINTED; 2421 } 2422 2423 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2424 { 2425 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2426 } 2427 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2428 2429 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2430 { 2431 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2432 } 2433 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2434 2435 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2436 struct ieee80211_link_data *link) 2437 { 2438 struct ieee80211_local *local = sdata->local; 2439 struct ieee80211_chanctx_conf *chanctx_conf; 2440 struct ieee80211_chanctx *chanctx; 2441 2442 lockdep_assert_wiphy(local->hw.wiphy); 2443 2444 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2445 lockdep_is_held(&local->hw.wiphy->mtx)); 2446 2447 /* 2448 * This function can be called from a work, thus it may be possible 2449 * that the chanctx_conf is removed (due to a disconnection, for 2450 * example). 2451 * So nothing should be done in such case. 2452 */ 2453 if (!chanctx_conf) 2454 return; 2455 2456 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2457 ieee80211_recalc_smps_chanctx(local, chanctx); 2458 } 2459 2460 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2461 int link_id) 2462 { 2463 struct ieee80211_local *local = sdata->local; 2464 struct ieee80211_chanctx_conf *chanctx_conf; 2465 struct ieee80211_chanctx *chanctx; 2466 int i; 2467 2468 lockdep_assert_wiphy(local->hw.wiphy); 2469 2470 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2471 struct ieee80211_bss_conf *bss_conf; 2472 2473 if (link_id >= 0 && link_id != i) 2474 continue; 2475 2476 rcu_read_lock(); 2477 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2478 if (!bss_conf) { 2479 rcu_read_unlock(); 2480 continue; 2481 } 2482 2483 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2484 lockdep_is_held(&local->hw.wiphy->mtx)); 2485 /* 2486 * Since we hold the wiphy mutex (checked above) 2487 * we can take the chanctx_conf pointer out of the 2488 * RCU critical section, it cannot go away without 2489 * the mutex. Just the way we reached it could - in 2490 * theory - go away, but we don't really care and 2491 * it really shouldn't happen anyway. 2492 */ 2493 rcu_read_unlock(); 2494 2495 if (!chanctx_conf) 2496 return; 2497 2498 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2499 conf); 2500 ieee80211_recalc_chanctx_min_def(local, chanctx); 2501 } 2502 } 2503 2504 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2505 { 2506 size_t pos = offset; 2507 2508 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2509 pos += 2 + ies[pos + 1]; 2510 2511 return pos; 2512 } 2513 2514 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2515 u16 cap) 2516 { 2517 __le16 tmp; 2518 2519 *pos++ = WLAN_EID_HT_CAPABILITY; 2520 *pos++ = sizeof(struct ieee80211_ht_cap); 2521 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2522 2523 /* capability flags */ 2524 tmp = cpu_to_le16(cap); 2525 memcpy(pos, &tmp, sizeof(u16)); 2526 pos += sizeof(u16); 2527 2528 /* AMPDU parameters */ 2529 *pos++ = ht_cap->ampdu_factor | 2530 (ht_cap->ampdu_density << 2531 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2532 2533 /* MCS set */ 2534 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2535 pos += sizeof(ht_cap->mcs); 2536 2537 /* extended capabilities */ 2538 pos += sizeof(__le16); 2539 2540 /* BF capabilities */ 2541 pos += sizeof(__le32); 2542 2543 /* antenna selection */ 2544 pos += sizeof(u8); 2545 2546 return pos; 2547 } 2548 2549 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2550 u32 cap) 2551 { 2552 __le32 tmp; 2553 2554 *pos++ = WLAN_EID_VHT_CAPABILITY; 2555 *pos++ = sizeof(struct ieee80211_vht_cap); 2556 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2557 2558 /* capability flags */ 2559 tmp = cpu_to_le32(cap); 2560 memcpy(pos, &tmp, sizeof(u32)); 2561 pos += sizeof(u32); 2562 2563 /* VHT MCS set */ 2564 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2565 pos += sizeof(vht_cap->vht_mcs); 2566 2567 return pos; 2568 } 2569 2570 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2571 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2572 { 2573 const struct ieee80211_sta_he_cap *he_cap; 2574 struct ieee80211_supported_band *sband; 2575 u8 n; 2576 2577 sband = ieee80211_get_sband(sdata); 2578 if (!sband) 2579 return 0; 2580 2581 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2582 if (!he_cap) 2583 return 0; 2584 2585 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2586 return 2 + 1 + 2587 sizeof(he_cap->he_cap_elem) + n + 2588 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2589 he_cap->he_cap_elem.phy_cap_info); 2590 } 2591 2592 static void 2593 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2594 const struct ieee80211_sta_he_cap *he_cap, 2595 struct ieee80211_he_cap_elem *elem) 2596 { 2597 u8 ru_limit, max_ru; 2598 2599 *elem = he_cap->he_cap_elem; 2600 2601 switch (conn->bw_limit) { 2602 case IEEE80211_CONN_BW_LIMIT_20: 2603 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2604 break; 2605 case IEEE80211_CONN_BW_LIMIT_40: 2606 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2607 break; 2608 case IEEE80211_CONN_BW_LIMIT_80: 2609 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2610 break; 2611 default: 2612 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2613 break; 2614 } 2615 2616 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2617 max_ru = min(max_ru, ru_limit); 2618 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2619 elem->phy_cap_info[8] |= max_ru; 2620 2621 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2622 elem->phy_cap_info[0] &= 2623 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2624 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2625 elem->phy_cap_info[9] &= 2626 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2627 } 2628 2629 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2630 elem->phy_cap_info[0] &= 2631 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2632 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2633 elem->phy_cap_info[5] &= 2634 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2635 elem->phy_cap_info[7] &= 2636 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2637 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2638 } 2639 } 2640 2641 int ieee80211_put_he_cap(struct sk_buff *skb, 2642 struct ieee80211_sub_if_data *sdata, 2643 const struct ieee80211_supported_band *sband, 2644 const struct ieee80211_conn_settings *conn) 2645 { 2646 const struct ieee80211_sta_he_cap *he_cap; 2647 struct ieee80211_he_cap_elem elem; 2648 u8 *len; 2649 u8 n; 2650 u8 ie_len; 2651 2652 if (!conn) 2653 conn = &ieee80211_conn_settings_unlimited; 2654 2655 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2656 if (!he_cap) 2657 return 0; 2658 2659 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2660 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2661 2662 n = ieee80211_he_mcs_nss_size(&elem); 2663 ie_len = 2 + 1 + 2664 sizeof(he_cap->he_cap_elem) + n + 2665 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2666 he_cap->he_cap_elem.phy_cap_info); 2667 2668 if (skb_tailroom(skb) < ie_len) 2669 return -ENOBUFS; 2670 2671 skb_put_u8(skb, WLAN_EID_EXTENSION); 2672 len = skb_put(skb, 1); /* We'll set the size later below */ 2673 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2674 2675 /* Fixed data */ 2676 skb_put_data(skb, &elem, sizeof(elem)); 2677 2678 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2679 2680 /* Check if PPE Threshold should be present */ 2681 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2682 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2683 goto end; 2684 2685 /* 2686 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2687 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2688 */ 2689 n = hweight8(he_cap->ppe_thres[0] & 2690 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2691 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2692 IEEE80211_PPE_THRES_NSS_POS)); 2693 2694 /* 2695 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2696 * total size. 2697 */ 2698 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2699 n = DIV_ROUND_UP(n, 8); 2700 2701 /* Copy PPE Thresholds */ 2702 skb_put_data(skb, &he_cap->ppe_thres, n); 2703 2704 end: 2705 *len = skb_tail_pointer(skb) - len - 1; 2706 return 0; 2707 } 2708 2709 void ieee80211_put_reg_conn(struct ieee80211_sub_if_data *sdata, 2710 struct sk_buff *skb) 2711 { 2712 struct ieee80211_local *local = sdata->local; 2713 u8 reg_conn = IEEE80211_REG_CONN_LPI_VALID | 2714 IEEE80211_REG_CONN_LPI_VALUE | 2715 IEEE80211_REG_CONN_SP_VALID; 2716 struct ieee80211_supported_band *sband; 2717 bool available_channels = false; 2718 u32 flags = 0; 2719 int i; 2720 2721 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2722 if (!sband) 2723 return; 2724 2725 for (i = 0; i < sband->n_channels; i++) { 2726 if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED) 2727 continue; 2728 flags |= sband->channels[i].flags; 2729 available_channels = true; 2730 } 2731 2732 if (!available_channels) 2733 return; 2734 2735 if (!(flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT)) 2736 reg_conn |= IEEE80211_REG_CONN_SP_VALUE; 2737 2738 skb_put_u8(skb, WLAN_EID_EXTENSION); 2739 skb_put_u8(skb, 1 + sizeof(reg_conn)); 2740 skb_put_u8(skb, WLAN_EID_EXT_NON_AP_STA_REG_CON); 2741 skb_put_u8(skb, reg_conn); 2742 } 2743 2744 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2745 struct ieee80211_sub_if_data *sdata, 2746 enum ieee80211_smps_mode smps_mode) 2747 { 2748 struct ieee80211_supported_band *sband; 2749 const struct ieee80211_sband_iftype_data *iftd; 2750 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2751 __le16 cap; 2752 2753 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2754 BIT(NL80211_BAND_6GHZ), 2755 IEEE80211_CHAN_NO_HE)) 2756 return 0; 2757 2758 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2759 2760 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2761 if (!iftd) 2762 return 0; 2763 2764 /* Check for device HE 6 GHz capability before adding element */ 2765 if (!iftd->he_6ghz_capa.capa) 2766 return 0; 2767 2768 cap = iftd->he_6ghz_capa.capa; 2769 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2770 2771 switch (smps_mode) { 2772 case IEEE80211_SMPS_AUTOMATIC: 2773 case IEEE80211_SMPS_NUM_MODES: 2774 WARN_ON(1); 2775 fallthrough; 2776 case IEEE80211_SMPS_OFF: 2777 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2778 IEEE80211_HE_6GHZ_CAP_SM_PS); 2779 break; 2780 case IEEE80211_SMPS_STATIC: 2781 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2782 IEEE80211_HE_6GHZ_CAP_SM_PS); 2783 break; 2784 case IEEE80211_SMPS_DYNAMIC: 2785 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2786 IEEE80211_HE_6GHZ_CAP_SM_PS); 2787 break; 2788 } 2789 2790 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2791 return -ENOBUFS; 2792 2793 skb_put_u8(skb, WLAN_EID_EXTENSION); 2794 skb_put_u8(skb, 1 + sizeof(cap)); 2795 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2796 skb_put_data(skb, &cap, sizeof(cap)); 2797 return 0; 2798 } 2799 2800 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2801 const struct cfg80211_chan_def *chandef, 2802 u16 prot_mode, bool rifs_mode) 2803 { 2804 struct ieee80211_ht_operation *ht_oper; 2805 /* Build HT Information */ 2806 *pos++ = WLAN_EID_HT_OPERATION; 2807 *pos++ = sizeof(struct ieee80211_ht_operation); 2808 ht_oper = (struct ieee80211_ht_operation *)pos; 2809 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2810 chandef->chan->center_freq); 2811 switch (chandef->width) { 2812 case NL80211_CHAN_WIDTH_160: 2813 case NL80211_CHAN_WIDTH_80P80: 2814 case NL80211_CHAN_WIDTH_80: 2815 case NL80211_CHAN_WIDTH_40: 2816 if (chandef->center_freq1 > chandef->chan->center_freq) 2817 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2818 else 2819 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2820 break; 2821 case NL80211_CHAN_WIDTH_320: 2822 /* HT information element should not be included on 6GHz */ 2823 WARN_ON(1); 2824 return pos; 2825 default: 2826 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2827 break; 2828 } 2829 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2830 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2831 chandef->width != NL80211_CHAN_WIDTH_20) 2832 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2833 2834 if (rifs_mode) 2835 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2836 2837 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2838 ht_oper->stbc_param = 0x0000; 2839 2840 /* It seems that Basic MCS set and Supported MCS set 2841 are identical for the first 10 bytes */ 2842 memset(&ht_oper->basic_set, 0, 16); 2843 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2844 2845 return pos + sizeof(struct ieee80211_ht_operation); 2846 } 2847 2848 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2849 const struct cfg80211_chan_def *chandef) 2850 { 2851 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2852 *pos++ = 3; /* IE length */ 2853 /* New channel width */ 2854 switch (chandef->width) { 2855 case NL80211_CHAN_WIDTH_80: 2856 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2857 break; 2858 case NL80211_CHAN_WIDTH_160: 2859 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2860 break; 2861 case NL80211_CHAN_WIDTH_80P80: 2862 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2863 break; 2864 case NL80211_CHAN_WIDTH_320: 2865 /* The behavior is not defined for 320 MHz channels */ 2866 WARN_ON(1); 2867 fallthrough; 2868 default: 2869 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2870 } 2871 2872 /* new center frequency segment 0 */ 2873 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2874 /* new center frequency segment 1 */ 2875 if (chandef->center_freq2) 2876 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2877 else 2878 *pos++ = 0; 2879 } 2880 2881 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2882 const struct cfg80211_chan_def *chandef) 2883 { 2884 struct ieee80211_vht_operation *vht_oper; 2885 2886 *pos++ = WLAN_EID_VHT_OPERATION; 2887 *pos++ = sizeof(struct ieee80211_vht_operation); 2888 vht_oper = (struct ieee80211_vht_operation *)pos; 2889 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2890 chandef->center_freq1); 2891 if (chandef->center_freq2) 2892 vht_oper->center_freq_seg1_idx = 2893 ieee80211_frequency_to_channel(chandef->center_freq2); 2894 else 2895 vht_oper->center_freq_seg1_idx = 0x00; 2896 2897 switch (chandef->width) { 2898 case NL80211_CHAN_WIDTH_160: 2899 /* 2900 * Convert 160 MHz channel width to new style as interop 2901 * workaround. 2902 */ 2903 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2904 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2905 if (chandef->chan->center_freq < chandef->center_freq1) 2906 vht_oper->center_freq_seg0_idx -= 8; 2907 else 2908 vht_oper->center_freq_seg0_idx += 8; 2909 break; 2910 case NL80211_CHAN_WIDTH_80P80: 2911 /* 2912 * Convert 80+80 MHz channel width to new style as interop 2913 * workaround. 2914 */ 2915 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2916 break; 2917 case NL80211_CHAN_WIDTH_80: 2918 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2919 break; 2920 case NL80211_CHAN_WIDTH_320: 2921 /* VHT information element should not be included on 6GHz */ 2922 WARN_ON(1); 2923 return pos; 2924 default: 2925 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2926 break; 2927 } 2928 2929 /* don't require special VHT peer rates */ 2930 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2931 2932 return pos + sizeof(struct ieee80211_vht_operation); 2933 } 2934 2935 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef) 2936 { 2937 struct ieee80211_he_operation *he_oper; 2938 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2939 struct cfg80211_chan_def he_chandef; 2940 u32 he_oper_params; 2941 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2942 2943 if (chandef->chan->band == NL80211_BAND_6GHZ) 2944 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2945 2946 *pos++ = WLAN_EID_EXTENSION; 2947 *pos++ = ie_len; 2948 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2949 2950 he_oper_params = 0; 2951 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2952 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2953 he_oper_params |= u32_encode_bits(1, 2954 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2955 he_oper_params |= u32_encode_bits(1, 2956 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2957 if (chandef->chan->band == NL80211_BAND_6GHZ) 2958 he_oper_params |= u32_encode_bits(1, 2959 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2960 2961 he_oper = (struct ieee80211_he_operation *)pos; 2962 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2963 2964 /* don't require special HE peer rates */ 2965 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2966 pos += sizeof(struct ieee80211_he_operation); 2967 2968 if (chandef->chan->band != NL80211_BAND_6GHZ) 2969 goto out; 2970 2971 cfg80211_chandef_create(&he_chandef, chandef->chan, NL80211_CHAN_NO_HT); 2972 he_chandef.center_freq1 = chandef->center_freq1; 2973 he_chandef.center_freq2 = chandef->center_freq2; 2974 he_chandef.width = chandef->width; 2975 2976 /* TODO add VHT operational */ 2977 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2978 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2979 he_6ghz_op->primary = 2980 ieee80211_frequency_to_channel(he_chandef.chan->center_freq); 2981 he_6ghz_op->ccfs0 = 2982 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2983 if (he_chandef.center_freq2) 2984 he_6ghz_op->ccfs1 = 2985 ieee80211_frequency_to_channel(he_chandef.center_freq2); 2986 else 2987 he_6ghz_op->ccfs1 = 0; 2988 2989 switch (he_chandef.width) { 2990 case NL80211_CHAN_WIDTH_320: 2991 /* Downgrade EHT 320 MHz BW to 160 MHz for HE and set new 2992 * center_freq1 2993 */ 2994 ieee80211_chandef_downgrade(&he_chandef, NULL); 2995 he_6ghz_op->ccfs0 = 2996 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2997 fallthrough; 2998 case NL80211_CHAN_WIDTH_160: 2999 /* Convert 160 MHz channel width to new style as interop 3000 * workaround. 3001 */ 3002 he_6ghz_op->control = 3003 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3004 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 3005 if (he_chandef.chan->center_freq < he_chandef.center_freq1) 3006 he_6ghz_op->ccfs0 -= 8; 3007 else 3008 he_6ghz_op->ccfs0 += 8; 3009 fallthrough; 3010 case NL80211_CHAN_WIDTH_80P80: 3011 he_6ghz_op->control = 3012 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 3013 break; 3014 case NL80211_CHAN_WIDTH_80: 3015 he_6ghz_op->control = 3016 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 3017 break; 3018 case NL80211_CHAN_WIDTH_40: 3019 he_6ghz_op->control = 3020 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 3021 break; 3022 default: 3023 he_6ghz_op->control = 3024 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 3025 break; 3026 } 3027 3028 pos += sizeof(struct ieee80211_he_6ghz_oper); 3029 3030 out: 3031 return pos; 3032 } 3033 3034 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef, 3035 const struct ieee80211_sta_eht_cap *eht_cap) 3036 3037 { 3038 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 3039 &eht_cap->eht_mcs_nss_supp.only_20mhz; 3040 struct ieee80211_eht_operation *eht_oper; 3041 struct ieee80211_eht_operation_info *eht_oper_info; 3042 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 3043 u8 eht_oper_info_len = 3044 offsetof(struct ieee80211_eht_operation_info, optional); 3045 u8 chan_width = 0; 3046 3047 *pos++ = WLAN_EID_EXTENSION; 3048 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 3049 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 3050 3051 eht_oper = (struct ieee80211_eht_operation *)pos; 3052 3053 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 3054 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 3055 pos += eht_oper_len; 3056 3057 eht_oper_info = 3058 (struct ieee80211_eht_operation_info *)eht_oper->optional; 3059 3060 eht_oper_info->ccfs0 = 3061 ieee80211_frequency_to_channel(chandef->center_freq1); 3062 if (chandef->center_freq2) 3063 eht_oper_info->ccfs1 = 3064 ieee80211_frequency_to_channel(chandef->center_freq2); 3065 else 3066 eht_oper_info->ccfs1 = 0; 3067 3068 switch (chandef->width) { 3069 case NL80211_CHAN_WIDTH_320: 3070 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 3071 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3072 if (chandef->chan->center_freq < chandef->center_freq1) 3073 eht_oper_info->ccfs0 -= 16; 3074 else 3075 eht_oper_info->ccfs0 += 16; 3076 break; 3077 case NL80211_CHAN_WIDTH_160: 3078 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3079 if (chandef->chan->center_freq < chandef->center_freq1) 3080 eht_oper_info->ccfs0 -= 8; 3081 else 3082 eht_oper_info->ccfs0 += 8; 3083 fallthrough; 3084 case NL80211_CHAN_WIDTH_80P80: 3085 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 3086 break; 3087 case NL80211_CHAN_WIDTH_80: 3088 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 3089 break; 3090 case NL80211_CHAN_WIDTH_40: 3091 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 3092 break; 3093 default: 3094 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 3095 break; 3096 } 3097 eht_oper_info->control = chan_width; 3098 pos += eht_oper_info_len; 3099 3100 /* TODO: eht_oper_info->optional */ 3101 3102 return pos; 3103 } 3104 3105 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 3106 struct cfg80211_chan_def *chandef) 3107 { 3108 enum nl80211_channel_type channel_type; 3109 3110 if (!ht_oper) 3111 return false; 3112 3113 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 3114 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 3115 channel_type = NL80211_CHAN_HT20; 3116 break; 3117 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 3118 channel_type = NL80211_CHAN_HT40PLUS; 3119 break; 3120 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 3121 channel_type = NL80211_CHAN_HT40MINUS; 3122 break; 3123 default: 3124 return false; 3125 } 3126 3127 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 3128 return true; 3129 } 3130 3131 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 3132 const struct ieee80211_vht_operation *oper, 3133 const struct ieee80211_ht_operation *htop, 3134 struct cfg80211_chan_def *chandef) 3135 { 3136 struct cfg80211_chan_def new = *chandef; 3137 int cf0, cf1; 3138 int ccfs0, ccfs1, ccfs2; 3139 int ccf0, ccf1; 3140 u32 vht_cap; 3141 bool support_80_80 = false; 3142 bool support_160 = false; 3143 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 3144 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 3145 u8 supp_chwidth = u32_get_bits(vht_cap_info, 3146 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3147 3148 if (!oper || !htop) 3149 return false; 3150 3151 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 3152 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 3153 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 3154 support_80_80 = ((vht_cap & 3155 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 3156 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 3157 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 3158 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 3159 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 3160 ccfs0 = oper->center_freq_seg0_idx; 3161 ccfs1 = oper->center_freq_seg1_idx; 3162 ccfs2 = (le16_to_cpu(htop->operation_mode) & 3163 IEEE80211_HT_OP_MODE_CCFS2_MASK) 3164 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 3165 3166 ccf0 = ccfs0; 3167 3168 /* if not supported, parse as though we didn't understand it */ 3169 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 3170 ext_nss_bw_supp = 0; 3171 3172 /* 3173 * Cf. IEEE 802.11-2020 Table 9-272 - Setting of the Supported Channel 3174 * Width Set subfield and Extended NSS BW Support subfield at a STA 3175 * transmitting the VHT Capabilities Information field 3176 * 3177 * We really just consider that because it's inefficient to connect 3178 * at a higher bandwidth than we'll actually be able to use. 3179 */ 3180 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 3181 default: 3182 case 0x00: 3183 ccf1 = 0; 3184 support_160 = false; 3185 support_80_80 = false; 3186 break; 3187 case 0x01: 3188 support_80_80 = false; 3189 fallthrough; 3190 case 0x02: 3191 case 0x03: 3192 ccf1 = ccfs2; 3193 break; 3194 case 0x10: 3195 ccf1 = ccfs1; 3196 break; 3197 case 0x11: 3198 case 0x12: 3199 if (!ccfs1) 3200 ccf1 = ccfs2; 3201 else 3202 ccf1 = ccfs1; 3203 break; 3204 case 0x13: 3205 case 0x20: 3206 case 0x23: 3207 ccf1 = ccfs1; 3208 break; 3209 } 3210 3211 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3212 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3213 3214 switch (oper->chan_width) { 3215 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3216 /* just use HT information directly */ 3217 break; 3218 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3219 new.width = NL80211_CHAN_WIDTH_80; 3220 new.center_freq1 = cf0; 3221 /* If needed, adjust based on the newer interop workaround. */ 3222 if (ccf1) { 3223 unsigned int diff; 3224 3225 diff = abs(ccf1 - ccf0); 3226 if ((diff == 8) && support_160) { 3227 new.width = NL80211_CHAN_WIDTH_160; 3228 new.center_freq1 = cf1; 3229 } else if ((diff > 8) && support_80_80) { 3230 new.width = NL80211_CHAN_WIDTH_80P80; 3231 new.center_freq2 = cf1; 3232 } 3233 } 3234 break; 3235 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3236 /* deprecated encoding */ 3237 new.width = NL80211_CHAN_WIDTH_160; 3238 new.center_freq1 = cf0; 3239 break; 3240 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3241 /* deprecated encoding */ 3242 new.width = NL80211_CHAN_WIDTH_80P80; 3243 new.center_freq1 = cf0; 3244 new.center_freq2 = cf1; 3245 break; 3246 default: 3247 return false; 3248 } 3249 3250 if (!cfg80211_chandef_valid(&new)) 3251 return false; 3252 3253 *chandef = new; 3254 return true; 3255 } 3256 3257 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3258 struct cfg80211_chan_def *chandef) 3259 { 3260 chandef->center_freq1 = 3261 ieee80211_channel_to_frequency(info->ccfs0, 3262 chandef->chan->band); 3263 3264 switch (u8_get_bits(info->control, 3265 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3266 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3267 chandef->width = NL80211_CHAN_WIDTH_20; 3268 break; 3269 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3270 chandef->width = NL80211_CHAN_WIDTH_40; 3271 break; 3272 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3273 chandef->width = NL80211_CHAN_WIDTH_80; 3274 break; 3275 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3276 chandef->width = NL80211_CHAN_WIDTH_160; 3277 chandef->center_freq1 = 3278 ieee80211_channel_to_frequency(info->ccfs1, 3279 chandef->chan->band); 3280 break; 3281 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3282 chandef->width = NL80211_CHAN_WIDTH_320; 3283 chandef->center_freq1 = 3284 ieee80211_channel_to_frequency(info->ccfs1, 3285 chandef->chan->band); 3286 break; 3287 } 3288 } 3289 3290 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3291 const struct ieee80211_he_operation *he_oper, 3292 const struct ieee80211_eht_operation *eht_oper, 3293 struct cfg80211_chan_def *chandef) 3294 { 3295 struct cfg80211_chan_def he_chandef = *chandef; 3296 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3297 u32 freq; 3298 3299 if (chandef->chan->band != NL80211_BAND_6GHZ) 3300 return true; 3301 3302 if (!he_oper) 3303 return false; 3304 3305 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3306 if (!he_6ghz_oper) 3307 return false; 3308 3309 /* 3310 * The EHT operation IE does not contain the primary channel so the 3311 * primary channel frequency should be taken from the 6 GHz operation 3312 * information. 3313 */ 3314 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3315 NL80211_BAND_6GHZ); 3316 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3317 3318 if (!he_chandef.chan) 3319 return false; 3320 3321 if (!eht_oper || 3322 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3323 switch (u8_get_bits(he_6ghz_oper->control, 3324 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3325 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3326 he_chandef.width = NL80211_CHAN_WIDTH_20; 3327 break; 3328 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3329 he_chandef.width = NL80211_CHAN_WIDTH_40; 3330 break; 3331 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3332 he_chandef.width = NL80211_CHAN_WIDTH_80; 3333 break; 3334 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3335 he_chandef.width = NL80211_CHAN_WIDTH_80; 3336 if (!he_6ghz_oper->ccfs1) 3337 break; 3338 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3339 he_chandef.width = NL80211_CHAN_WIDTH_160; 3340 else 3341 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3342 break; 3343 } 3344 3345 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3346 he_chandef.center_freq1 = 3347 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3348 NL80211_BAND_6GHZ); 3349 } else { 3350 he_chandef.center_freq1 = 3351 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3352 NL80211_BAND_6GHZ); 3353 he_chandef.center_freq2 = 3354 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3355 NL80211_BAND_6GHZ); 3356 } 3357 } else { 3358 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3359 &he_chandef); 3360 he_chandef.punctured = 3361 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 3362 } 3363 3364 if (!cfg80211_chandef_valid(&he_chandef)) 3365 return false; 3366 3367 *chandef = he_chandef; 3368 3369 return true; 3370 } 3371 3372 bool ieee80211_chandef_s1g_oper(struct ieee80211_local *local, 3373 const struct ieee80211_s1g_oper_ie *oper, 3374 struct cfg80211_chan_def *chandef) 3375 { 3376 u32 oper_khz, pri_1mhz_khz, pri_2mhz_khz; 3377 3378 if (!oper) 3379 return false; 3380 3381 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3382 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3383 chandef->width = NL80211_CHAN_WIDTH_1; 3384 break; 3385 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3386 chandef->width = NL80211_CHAN_WIDTH_2; 3387 break; 3388 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3389 chandef->width = NL80211_CHAN_WIDTH_4; 3390 break; 3391 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3392 chandef->width = NL80211_CHAN_WIDTH_8; 3393 break; 3394 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3395 chandef->width = NL80211_CHAN_WIDTH_16; 3396 break; 3397 default: 3398 return false; 3399 } 3400 3401 chandef->s1g_primary_2mhz = false; 3402 3403 switch (u8_get_bits(oper->ch_width, S1G_OPER_CH_WIDTH_PRIMARY)) { 3404 case IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 3405 pri_1mhz_khz = ieee80211_channel_to_freq_khz( 3406 oper->primary_ch, NL80211_BAND_S1GHZ); 3407 break; 3408 case IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 3409 chandef->s1g_primary_2mhz = true; 3410 pri_2mhz_khz = ieee80211_channel_to_freq_khz( 3411 oper->primary_ch, NL80211_BAND_S1GHZ); 3412 3413 if (u8_get_bits(oper->ch_width, S1G_OPER_CH_PRIMARY_LOCATION) == 3414 S1G_2M_PRIMARY_LOCATION_LOWER) 3415 pri_1mhz_khz = pri_2mhz_khz - 500; 3416 else 3417 pri_1mhz_khz = pri_2mhz_khz + 500; 3418 break; 3419 default: 3420 return false; 3421 } 3422 3423 oper_khz = ieee80211_channel_to_freq_khz(oper->oper_ch, 3424 NL80211_BAND_S1GHZ); 3425 chandef->center_freq1 = KHZ_TO_MHZ(oper_khz); 3426 chandef->freq1_offset = oper_khz % 1000; 3427 chandef->chan = 3428 ieee80211_get_channel_khz(local->hw.wiphy, pri_1mhz_khz); 3429 3430 return chandef->chan; 3431 } 3432 3433 int ieee80211_put_srates_elem(struct sk_buff *skb, 3434 const struct ieee80211_supported_band *sband, 3435 u32 basic_rates, u32 masked_rates, 3436 u8 element_id) 3437 { 3438 u8 i, rates, skip; 3439 3440 rates = 0; 3441 for (i = 0; i < sband->n_bitrates; i++) { 3442 if (masked_rates & BIT(i)) 3443 continue; 3444 rates++; 3445 } 3446 3447 if (element_id == WLAN_EID_SUPP_RATES) { 3448 rates = min_t(u8, rates, 8); 3449 skip = 0; 3450 } else { 3451 skip = 8; 3452 if (rates <= skip) 3453 return 0; 3454 rates -= skip; 3455 } 3456 3457 if (skb_tailroom(skb) < rates + 2) 3458 return -ENOBUFS; 3459 3460 skb_put_u8(skb, element_id); 3461 skb_put_u8(skb, rates); 3462 3463 for (i = 0; i < sband->n_bitrates && rates; i++) { 3464 int rate; 3465 u8 basic; 3466 3467 if (masked_rates & BIT(i)) 3468 continue; 3469 3470 if (skip > 0) { 3471 skip--; 3472 continue; 3473 } 3474 3475 basic = basic_rates & BIT(i) ? 0x80 : 0; 3476 3477 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3478 skb_put_u8(skb, basic | (u8)rate); 3479 rates--; 3480 } 3481 3482 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3483 rates, element_id); 3484 3485 return 0; 3486 } 3487 3488 int ieee80211_ave_rssi(struct ieee80211_vif *vif, int link_id) 3489 { 3490 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3491 struct ieee80211_link_data *link_data; 3492 3493 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3494 return 0; 3495 3496 if (link_id < 0) 3497 link_data = &sdata->deflink; 3498 else 3499 link_data = wiphy_dereference(sdata->local->hw.wiphy, 3500 sdata->link[link_id]); 3501 3502 if (WARN_ON_ONCE(!link_data)) 3503 return -99; 3504 3505 return -ewma_beacon_signal_read(&link_data->u.mgd.ave_beacon_signal); 3506 } 3507 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3508 3509 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3510 { 3511 if (!mcs) 3512 return 1; 3513 3514 /* TODO: consider rx_highest */ 3515 3516 if (mcs->rx_mask[3]) 3517 return 4; 3518 if (mcs->rx_mask[2]) 3519 return 3; 3520 if (mcs->rx_mask[1]) 3521 return 2; 3522 return 1; 3523 } 3524 3525 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_hw *hw, 3526 struct ieee80211_rx_status *status, 3527 unsigned int mpdu_len, 3528 unsigned int mpdu_offset) 3529 { 3530 u64 ts = status->mactime; 3531 bool mactime_plcp_start; 3532 struct rate_info ri; 3533 u16 rate; 3534 u8 n_ltf; 3535 3536 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3537 return 0; 3538 3539 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3540 RX_FLAG_MACTIME_PLCP_START; 3541 3542 memset(&ri, 0, sizeof(ri)); 3543 3544 ri.bw = status->bw; 3545 3546 /* Fill cfg80211 rate info */ 3547 switch (status->encoding) { 3548 case RX_ENC_EHT: 3549 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3550 ri.mcs = status->rate_idx; 3551 ri.nss = status->nss; 3552 ri.eht_ru_alloc = status->eht.ru; 3553 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3554 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3555 /* TODO/FIXME: is this right? handle other PPDUs */ 3556 if (mactime_plcp_start) { 3557 mpdu_offset += 2; 3558 ts += 36; 3559 } 3560 break; 3561 case RX_ENC_HE: 3562 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3563 ri.mcs = status->rate_idx; 3564 ri.nss = status->nss; 3565 ri.he_ru_alloc = status->he_ru; 3566 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3567 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3568 3569 /* 3570 * See P802.11ax_D6.0, section 27.3.4 for 3571 * VHT PPDU format. 3572 */ 3573 if (mactime_plcp_start) { 3574 mpdu_offset += 2; 3575 ts += 36; 3576 3577 /* 3578 * TODO: 3579 * For HE MU PPDU, add the HE-SIG-B. 3580 * For HE ER PPDU, add 8us for the HE-SIG-A. 3581 * For HE TB PPDU, add 4us for the HE-STF. 3582 * Add the HE-LTF durations - variable. 3583 */ 3584 } 3585 3586 break; 3587 case RX_ENC_HT: 3588 ri.mcs = status->rate_idx; 3589 ri.flags |= RATE_INFO_FLAGS_MCS; 3590 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3591 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3592 3593 /* 3594 * See P802.11REVmd_D3.0, section 19.3.2 for 3595 * HT PPDU format. 3596 */ 3597 if (mactime_plcp_start) { 3598 mpdu_offset += 2; 3599 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3600 ts += 24; 3601 else 3602 ts += 32; 3603 3604 /* 3605 * Add Data HT-LTFs per streams 3606 * TODO: add Extension HT-LTFs, 4us per LTF 3607 */ 3608 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3609 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3610 ts += n_ltf * 4; 3611 } 3612 3613 break; 3614 case RX_ENC_VHT: 3615 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3616 ri.mcs = status->rate_idx; 3617 ri.nss = status->nss; 3618 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3619 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3620 3621 /* 3622 * See P802.11REVmd_D3.0, section 21.3.2 for 3623 * VHT PPDU format. 3624 */ 3625 if (mactime_plcp_start) { 3626 mpdu_offset += 2; 3627 ts += 36; 3628 3629 /* 3630 * Add VHT-LTFs per streams 3631 */ 3632 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3633 ri.nss + 1 : ri.nss; 3634 ts += 4 * n_ltf; 3635 } 3636 3637 break; 3638 default: 3639 WARN_ON(1); 3640 fallthrough; 3641 case RX_ENC_LEGACY: { 3642 struct ieee80211_supported_band *sband; 3643 3644 sband = hw->wiphy->bands[status->band]; 3645 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3646 3647 if (mactime_plcp_start) { 3648 if (status->band == NL80211_BAND_5GHZ) { 3649 ts += 20; 3650 mpdu_offset += 2; 3651 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3652 ts += 96; 3653 } else { 3654 ts += 192; 3655 } 3656 } 3657 break; 3658 } 3659 } 3660 3661 rate = cfg80211_calculate_bitrate(&ri); 3662 if (WARN_ONCE(!rate, 3663 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3664 (unsigned long long)status->flag, status->rate_idx, 3665 status->nss)) 3666 return 0; 3667 3668 /* rewind from end of MPDU */ 3669 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3670 ts -= mpdu_len * 8 * 10 / rate; 3671 3672 ts += mpdu_offset * 8 * 10 / rate; 3673 3674 return ts; 3675 } 3676 EXPORT_SYMBOL_GPL(ieee80211_calculate_rx_timestamp); 3677 3678 /* Cancel CAC for the interfaces under the specified @local. If @ctx is 3679 * also provided, only the interfaces using that ctx will be canceled. 3680 */ 3681 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local, 3682 struct ieee80211_chanctx *ctx) 3683 { 3684 struct ieee80211_sub_if_data *sdata; 3685 struct cfg80211_chan_def chandef; 3686 struct ieee80211_link_data *link; 3687 struct ieee80211_chanctx_conf *chanctx_conf; 3688 unsigned int link_id; 3689 3690 lockdep_assert_wiphy(local->hw.wiphy); 3691 3692 list_for_each_entry(sdata, &local->interfaces, list) { 3693 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3694 link_id++) { 3695 link = sdata_dereference(sdata->link[link_id], 3696 sdata); 3697 if (!link) 3698 continue; 3699 3700 chanctx_conf = sdata_dereference(link->conf->chanctx_conf, 3701 sdata); 3702 if (ctx && &ctx->conf != chanctx_conf) 3703 continue; 3704 3705 wiphy_hrtimer_work_cancel(local->hw.wiphy, 3706 &link->dfs_cac_timer_work); 3707 3708 if (!sdata->wdev.links[link_id].cac_started) 3709 continue; 3710 3711 chandef = link->conf->chanreq.oper; 3712 ieee80211_link_release_channel(link); 3713 cfg80211_cac_event(sdata->dev, &chandef, 3714 NL80211_RADAR_CAC_ABORTED, 3715 GFP_KERNEL, link_id); 3716 } 3717 } 3718 } 3719 3720 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3721 struct wiphy_work *work) 3722 { 3723 struct ieee80211_local *local = 3724 container_of(work, struct ieee80211_local, radar_detected_work); 3725 struct cfg80211_chan_def chandef; 3726 struct ieee80211_chanctx *ctx, *tmp; 3727 3728 lockdep_assert_wiphy(local->hw.wiphy); 3729 3730 list_for_each_entry_safe(ctx, tmp, &local->chanctx_list, list) { 3731 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3732 continue; 3733 3734 if (!ctx->radar_detected) 3735 continue; 3736 3737 ctx->radar_detected = false; 3738 3739 chandef = ctx->conf.def; 3740 3741 ieee80211_dfs_cac_cancel(local, ctx); 3742 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3743 } 3744 } 3745 3746 static void 3747 ieee80211_radar_mark_chan_ctx_iterator(struct ieee80211_hw *hw, 3748 struct ieee80211_chanctx_conf *chanctx_conf, 3749 void *data) 3750 { 3751 struct ieee80211_chanctx *ctx = 3752 container_of(chanctx_conf, struct ieee80211_chanctx, 3753 conf); 3754 3755 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3756 return; 3757 3758 if (data && data != chanctx_conf) 3759 return; 3760 3761 ctx->radar_detected = true; 3762 } 3763 3764 void ieee80211_radar_detected(struct ieee80211_hw *hw, 3765 struct ieee80211_chanctx_conf *chanctx_conf) 3766 { 3767 struct ieee80211_local *local = hw_to_local(hw); 3768 3769 trace_api_radar_detected(local); 3770 3771 ieee80211_iter_chan_contexts_atomic(hw, ieee80211_radar_mark_chan_ctx_iterator, 3772 chanctx_conf); 3773 3774 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3775 } 3776 EXPORT_SYMBOL(ieee80211_radar_detected); 3777 3778 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3779 struct ieee80211_conn_settings *conn) 3780 { 3781 enum nl80211_chan_width new_primary_width; 3782 struct ieee80211_conn_settings _ignored = {}; 3783 3784 /* allow passing NULL if caller doesn't care */ 3785 if (!conn) 3786 conn = &_ignored; 3787 3788 again: 3789 /* no-HT indicates nothing to do */ 3790 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3791 3792 switch (c->width) { 3793 default: 3794 case NL80211_CHAN_WIDTH_20_NOHT: 3795 WARN_ON_ONCE(1); 3796 fallthrough; 3797 case NL80211_CHAN_WIDTH_20: 3798 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3799 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3800 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3801 c->punctured = 0; 3802 break; 3803 case NL80211_CHAN_WIDTH_40: 3804 c->width = NL80211_CHAN_WIDTH_20; 3805 c->center_freq1 = c->chan->center_freq; 3806 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3807 conn->mode = IEEE80211_CONN_MODE_HT; 3808 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3809 c->punctured = 0; 3810 break; 3811 case NL80211_CHAN_WIDTH_80: 3812 new_primary_width = NL80211_CHAN_WIDTH_40; 3813 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3814 conn->mode = IEEE80211_CONN_MODE_HT; 3815 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3816 break; 3817 case NL80211_CHAN_WIDTH_80P80: 3818 c->center_freq2 = 0; 3819 c->width = NL80211_CHAN_WIDTH_80; 3820 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3821 break; 3822 case NL80211_CHAN_WIDTH_160: 3823 new_primary_width = NL80211_CHAN_WIDTH_80; 3824 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3825 break; 3826 case NL80211_CHAN_WIDTH_320: 3827 new_primary_width = NL80211_CHAN_WIDTH_160; 3828 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3829 break; 3830 case NL80211_CHAN_WIDTH_1: 3831 case NL80211_CHAN_WIDTH_2: 3832 case NL80211_CHAN_WIDTH_4: 3833 case NL80211_CHAN_WIDTH_8: 3834 case NL80211_CHAN_WIDTH_16: 3835 WARN_ON_ONCE(1); 3836 /* keep c->width */ 3837 conn->mode = IEEE80211_CONN_MODE_S1G; 3838 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3839 break; 3840 } 3841 3842 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3843 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3844 &c->punctured); 3845 c->width = new_primary_width; 3846 } 3847 3848 /* whatever we do, downgrading removes NPCA */ 3849 c->npca_chan = NULL; 3850 c->npca_punctured = 0; 3851 3852 /* 3853 * With an 80 MHz channel, we might have the puncturing in the primary 3854 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3855 * In that case, downgrade again. 3856 */ 3857 if (!cfg80211_chandef_valid(c) && c->punctured) 3858 goto again; 3859 3860 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3861 } 3862 3863 enum nl80211_chan_width 3864 ieee80211_sta_rx_bw_to_chan_width(enum ieee80211_sta_rx_bandwidth bw) 3865 { 3866 switch (bw) { 3867 case IEEE80211_STA_RX_BW_20: 3868 return NL80211_CHAN_WIDTH_20; 3869 case IEEE80211_STA_RX_BW_40: 3870 return NL80211_CHAN_WIDTH_40; 3871 case IEEE80211_STA_RX_BW_80: 3872 return NL80211_CHAN_WIDTH_80; 3873 case IEEE80211_STA_RX_BW_160: 3874 return NL80211_CHAN_WIDTH_160; 3875 case IEEE80211_STA_RX_BW_320: 3876 return NL80211_CHAN_WIDTH_320; 3877 default: 3878 return NL80211_CHAN_WIDTH_20; 3879 } 3880 } 3881 3882 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3883 struct cfg80211_csa_settings *csa_settings) 3884 { 3885 int hdr_len = IEEE80211_MIN_ACTION_SIZE(chan_switch); 3886 struct sk_buff *skb; 3887 struct ieee80211_mgmt *mgmt; 3888 struct ieee80211_local *local = sdata->local; 3889 int freq; 3890 u8 *pos; 3891 3892 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3893 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3894 return -EOPNOTSUPP; 3895 3896 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3897 5 + /* channel switch announcement element */ 3898 3 + /* secondary channel offset element */ 3899 5 + /* wide bandwidth channel switch announcement */ 3900 8); /* mesh channel switch parameters element */ 3901 if (!skb) 3902 return -ENOMEM; 3903 3904 skb_reserve(skb, local->tx_headroom); 3905 mgmt = skb_put_zero(skb, hdr_len); 3906 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3907 IEEE80211_STYPE_ACTION); 3908 3909 eth_broadcast_addr(mgmt->da); 3910 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3911 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3912 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3913 } else { 3914 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3915 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3916 } 3917 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3918 mgmt->u.action.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3919 pos = skb_put(skb, 5); 3920 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3921 *pos++ = 3; /* IE length */ 3922 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3923 freq = csa_settings->chandef.chan->center_freq; 3924 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3925 *pos++ = csa_settings->count; /* count */ 3926 3927 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3928 enum nl80211_channel_type ch_type; 3929 3930 skb_put(skb, 3); 3931 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3932 *pos++ = 1; /* IE length */ 3933 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3934 if (ch_type == NL80211_CHAN_HT40PLUS) 3935 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3936 else 3937 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3938 } 3939 3940 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3941 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3942 3943 skb_put(skb, 8); 3944 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3945 *pos++ = 6; /* IE length */ 3946 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3947 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3948 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3949 *pos++ |= csa_settings->block_tx ? 3950 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3951 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3952 pos += 2; 3953 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3954 pos += 2; 3955 } 3956 3957 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3958 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3959 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3960 skb_put(skb, 5); 3961 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3962 } 3963 3964 ieee80211_tx_skb(sdata, skb); 3965 return 0; 3966 } 3967 3968 static bool 3969 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3970 { 3971 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3972 int skip; 3973 3974 if (end > 0) 3975 return false; 3976 3977 /* One shot NOA */ 3978 if (data->count[i] == 1) 3979 return false; 3980 3981 if (data->desc[i].interval == 0) 3982 return false; 3983 3984 /* End time is in the past, check for repetitions */ 3985 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3986 if (data->count[i] < 255) { 3987 if (data->count[i] <= skip) { 3988 data->count[i] = 0; 3989 return false; 3990 } 3991 3992 data->count[i] -= skip; 3993 } 3994 3995 data->desc[i].start += skip * data->desc[i].interval; 3996 3997 return true; 3998 } 3999 4000 static bool 4001 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 4002 s32 *offset) 4003 { 4004 bool ret = false; 4005 int i; 4006 4007 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4008 s32 cur; 4009 4010 if (!data->count[i]) 4011 continue; 4012 4013 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 4014 ret = true; 4015 4016 cur = data->desc[i].start - tsf; 4017 if (cur > *offset) 4018 continue; 4019 4020 cur = data->desc[i].start + data->desc[i].duration - tsf; 4021 if (cur > *offset) 4022 *offset = cur; 4023 } 4024 4025 return ret; 4026 } 4027 4028 static u32 4029 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 4030 { 4031 s32 offset = 0; 4032 int tries = 0; 4033 /* 4034 * arbitrary limit, used to avoid infinite loops when combined NoA 4035 * descriptors cover the full time period. 4036 */ 4037 int max_tries = 5; 4038 4039 ieee80211_extend_absent_time(data, tsf, &offset); 4040 do { 4041 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 4042 break; 4043 4044 tries++; 4045 } while (tries < max_tries); 4046 4047 return offset; 4048 } 4049 4050 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 4051 { 4052 u32 next_offset = BIT(31) - 1; 4053 int i; 4054 4055 data->absent = 0; 4056 data->has_next_tsf = false; 4057 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4058 s32 start; 4059 4060 if (!data->count[i]) 4061 continue; 4062 4063 ieee80211_extend_noa_desc(data, tsf, i); 4064 start = data->desc[i].start - tsf; 4065 if (start <= 0) 4066 data->absent |= BIT(i); 4067 4068 if (next_offset > start) 4069 next_offset = start; 4070 4071 data->has_next_tsf = true; 4072 } 4073 4074 if (data->absent) 4075 next_offset = ieee80211_get_noa_absent_time(data, tsf); 4076 4077 data->next_tsf = tsf + next_offset; 4078 } 4079 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 4080 4081 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 4082 struct ieee80211_noa_data *data, u32 tsf) 4083 { 4084 int ret = 0; 4085 int i; 4086 4087 memset(data, 0, sizeof(*data)); 4088 4089 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4090 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 4091 4092 if (!desc->count || !desc->duration) 4093 continue; 4094 4095 data->count[i] = desc->count; 4096 data->desc[i].start = le32_to_cpu(desc->start_time); 4097 data->desc[i].duration = le32_to_cpu(desc->duration); 4098 data->desc[i].interval = le32_to_cpu(desc->interval); 4099 4100 if (data->count[i] > 1 && 4101 data->desc[i].interval < data->desc[i].duration) 4102 continue; 4103 4104 ieee80211_extend_noa_desc(data, tsf, i); 4105 ret++; 4106 } 4107 4108 if (ret) 4109 ieee80211_update_p2p_noa(data, tsf); 4110 4111 return ret; 4112 } 4113 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 4114 4115 void ieee80211_recalc_dtim(struct ieee80211_sub_if_data *sdata, u64 tsf) 4116 { 4117 u64 dtim_count = 0; 4118 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4119 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4120 struct ps_data *ps; 4121 u8 bcns_from_dtim; 4122 4123 if (tsf == -1ULL || !beacon_int || !dtim_period) 4124 return; 4125 4126 if (sdata->vif.type == NL80211_IFTYPE_AP || 4127 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4128 if (!sdata->bss) 4129 return; 4130 4131 ps = &sdata->bss->ps; 4132 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4133 ps = &sdata->u.mesh.ps; 4134 } else { 4135 return; 4136 } 4137 4138 /* 4139 * actually finds last dtim_count, mac80211 will update in 4140 * __beacon_add_tim(). 4141 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4142 */ 4143 do_div(tsf, beacon_int); 4144 bcns_from_dtim = do_div(tsf, dtim_period); 4145 /* just had a DTIM */ 4146 if (!bcns_from_dtim) 4147 dtim_count = 0; 4148 else 4149 dtim_count = dtim_period - bcns_from_dtim; 4150 4151 ps->dtim_count = dtim_count; 4152 } 4153 4154 /* 4155 * Given a long beacon period, calculate the current index into 4156 * that period to determine the number of TSBTTs until the next TBTT. 4157 * It is completely valid to have a short beacon period that differs 4158 * from the dtim period (i.e a TBTT thats not a DTIM). 4159 */ 4160 void ieee80211_recalc_sb_count(struct ieee80211_sub_if_data *sdata, u64 tsf) 4161 { 4162 u32 sb_idx; 4163 struct ps_data *ps = &sdata->bss->ps; 4164 u8 lb_period = sdata->vif.bss_conf.s1g_long_beacon_period; 4165 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4166 4167 /* No mesh / IBSS support for short beaconing */ 4168 if (tsf == -1ULL || !lb_period || 4169 (sdata->vif.type != NL80211_IFTYPE_AP && 4170 sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) 4171 return; 4172 4173 /* find the current TSBTT index in our lb_period */ 4174 do_div(tsf, beacon_int); 4175 sb_idx = do_div(tsf, lb_period); 4176 4177 /* num TSBTTs until the next TBTT */ 4178 ps->sb_count = sb_idx ? lb_period - sb_idx : 0; 4179 } 4180 4181 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 4182 struct ieee80211_chanctx *ctx) 4183 { 4184 struct ieee80211_link_data *link; 4185 u8 radar_detect = 0; 4186 4187 lockdep_assert_wiphy(local->hw.wiphy); 4188 4189 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 4190 return 0; 4191 4192 for_each_sdata_link(local, link) { 4193 if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { 4194 /* 4195 * An in-place reservation context should not have any 4196 * assigned links until it replaces the other context. 4197 */ 4198 WARN_ON(ctx->replace_state == 4199 IEEE80211_CHANCTX_REPLACES_OTHER); 4200 4201 if (link->radar_required) 4202 radar_detect |= 4203 BIT(link->conf->chanreq.oper.width); 4204 } 4205 4206 if (link->reserved_chanctx == ctx && 4207 link->reserved_radar_required) 4208 radar_detect |= BIT(link->reserved.oper.width); 4209 } 4210 4211 return radar_detect; 4212 } 4213 4214 bool ieee80211_is_radio_idx_in_scan_req(struct wiphy *wiphy, 4215 struct cfg80211_scan_request *scan_req, 4216 int radio_idx) 4217 { 4218 struct ieee80211_channel *chan; 4219 int i, chan_radio_idx; 4220 4221 for (i = 0; i < scan_req->n_channels; i++) { 4222 chan = scan_req->channels[i]; 4223 chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); 4224 4225 /* The radio index either matched successfully, or an error 4226 * occurred. For example, if radio-level information is 4227 * missing, the same error value is returned. This 4228 * typically implies a single-radio setup, in which case 4229 * the operation should not be allowed. 4230 */ 4231 if (chan_radio_idx == radio_idx) 4232 return true; 4233 } 4234 4235 return false; 4236 } 4237 4238 static u32 4239 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) 4240 { 4241 struct ieee80211_bss_conf *link_conf; 4242 struct ieee80211_chanctx_conf *conf; 4243 unsigned int link_id; 4244 u32 mask = 0; 4245 4246 for_each_vif_active_link(&sdata->vif, link_conf, link_id) { 4247 conf = sdata_dereference(link_conf->chanctx_conf, sdata); 4248 if (!conf || conf->radio_idx < 0) 4249 continue; 4250 4251 mask |= BIT(conf->radio_idx); 4252 } 4253 4254 return mask; 4255 } 4256 4257 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) 4258 { 4259 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4260 4261 return __ieee80211_get_radio_mask(sdata); 4262 } 4263 4264 static bool 4265 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) 4266 { 4267 if (radio_idx < 0) 4268 return true; 4269 4270 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); 4271 } 4272 4273 static int 4274 ieee80211_fill_ifcomb_params(struct ieee80211_local *local, 4275 struct iface_combination_params *params, 4276 const struct cfg80211_chan_def *chandef, 4277 struct ieee80211_sub_if_data *sdata, 4278 bool (*chanctx_filter)(struct ieee80211_chanctx *ctx, 4279 void *filter_data), 4280 void *filter_data) 4281 { 4282 struct ieee80211_sub_if_data *sdata_iter; 4283 struct ieee80211_chanctx *ctx; 4284 int total = !!sdata; 4285 4286 list_for_each_entry(ctx, &local->chanctx_list, list) { 4287 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4288 continue; 4289 4290 if (params->radio_idx >= 0 && 4291 ctx->conf.radio_idx != params->radio_idx) 4292 continue; 4293 4294 params->radar_detect |= 4295 ieee80211_chanctx_radar_detect(local, ctx); 4296 4297 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE && 4298 cfg80211_chandef_compatible(chandef, &ctx->conf.def)) 4299 continue; 4300 4301 if (chanctx_filter && 4302 chanctx_filter(ctx, filter_data)) 4303 continue; 4304 4305 params->num_different_channels++; 4306 } 4307 4308 list_for_each_entry(sdata_iter, &local->interfaces, list) { 4309 struct wireless_dev *wdev_iter; 4310 4311 wdev_iter = &sdata_iter->wdev; 4312 4313 if (sdata_iter == sdata || 4314 !ieee80211_sdata_running(sdata_iter) || 4315 cfg80211_iftype_allowed(local->hw.wiphy, 4316 wdev_iter->iftype, 0, 1)) 4317 continue; 4318 4319 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) 4320 continue; 4321 4322 params->iftype_num[wdev_iter->iftype]++; 4323 total++; 4324 } 4325 4326 return total; 4327 } 4328 4329 int ieee80211_check_combinations_ext(struct ieee80211_sub_if_data *sdata, 4330 struct ieee80211_check_combinations_data *data) 4331 { 4332 const struct cfg80211_chan_def *chandef = data->chandef; 4333 bool shared = data->chanmode == IEEE80211_CHANCTX_SHARED; 4334 struct ieee80211_local *local = sdata->local; 4335 enum nl80211_iftype iftype = sdata->wdev.iftype; 4336 struct iface_combination_params params = { 4337 .radar_detect = data->radar_detect, 4338 .radio_idx = data->radio_idx, 4339 }; 4340 int total; 4341 4342 lockdep_assert_wiphy(local->hw.wiphy); 4343 4344 if (WARN_ON(hweight32(data->radar_detect) > 1)) 4345 return -EINVAL; 4346 4347 if (WARN_ON(chandef && data->chanmode == IEEE80211_CHANCTX_SHARED && 4348 !chandef->chan)) 4349 return -EINVAL; 4350 4351 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4352 return -EINVAL; 4353 4354 if (sdata->vif.type == NL80211_IFTYPE_AP || 4355 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4356 /* 4357 * always passing this is harmless, since it'll be the 4358 * same value that cfg80211 finds if it finds the same 4359 * interface ... and that's always allowed 4360 */ 4361 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4362 } 4363 4364 /* Always allow software iftypes */ 4365 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4366 if (data->radar_detect) 4367 return -EINVAL; 4368 return 0; 4369 } 4370 4371 if (chandef) 4372 params.num_different_channels = 1; 4373 4374 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4375 params.iftype_num[iftype] = 1; 4376 4377 total = ieee80211_fill_ifcomb_params(local, ¶ms, 4378 shared ? chandef : NULL, 4379 sdata, 4380 data->chanctx_filter, 4381 data->filter_data); 4382 if (total == 1 && !params.radar_detect) 4383 return 0; 4384 4385 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4386 } 4387 4388 static void 4389 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4390 void *data) 4391 { 4392 u32 *max_num_different_channels = data; 4393 4394 *max_num_different_channels = max(*max_num_different_channels, 4395 c->num_different_channels); 4396 } 4397 4398 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) 4399 { 4400 u32 max_num_different_channels = 1; 4401 int err; 4402 struct iface_combination_params params = { 4403 .radio_idx = radio_idx, 4404 }; 4405 4406 lockdep_assert_wiphy(local->hw.wiphy); 4407 4408 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL, NULL, NULL); 4409 4410 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4411 ieee80211_iter_max_chans, 4412 &max_num_different_channels); 4413 if (err < 0) 4414 return err; 4415 4416 return max_num_different_channels; 4417 } 4418 4419 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4420 struct ieee80211_sta_s1g_cap *caps, 4421 struct sk_buff *skb) 4422 { 4423 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4424 struct ieee80211_s1g_cap s1g_capab; 4425 u8 *pos; 4426 int i; 4427 4428 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4429 return; 4430 4431 if (!caps->s1g) 4432 return; 4433 4434 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4435 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4436 4437 /* override the capability info */ 4438 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4439 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4440 4441 s1g_capab.capab_info[i] &= ~mask; 4442 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4443 } 4444 4445 /* then MCS and NSS set */ 4446 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4447 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4448 4449 s1g_capab.supp_mcs_nss[i] &= ~mask; 4450 s1g_capab.supp_mcs_nss[i] |= 4451 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4452 } 4453 4454 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4455 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4456 *pos++ = sizeof(s1g_capab); 4457 4458 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4459 } 4460 4461 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4462 struct sk_buff *skb) 4463 { 4464 u8 *pos = skb_put(skb, 3); 4465 4466 *pos++ = WLAN_EID_AID_REQUEST; 4467 *pos++ = 1; 4468 *pos++ = 0; 4469 } 4470 4471 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4472 { 4473 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4474 *buf++ = 7; /* len */ 4475 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4476 *buf++ = 0x50; 4477 *buf++ = 0xf2; 4478 *buf++ = 2; /* WME */ 4479 *buf++ = 0; /* WME info */ 4480 *buf++ = 1; /* WME ver */ 4481 *buf++ = qosinfo; /* U-APSD no in use */ 4482 4483 return buf; 4484 } 4485 4486 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4487 unsigned long *frame_cnt, 4488 unsigned long *byte_cnt) 4489 { 4490 struct txq_info *txqi = to_txq_info(txq); 4491 u32 frag_cnt = 0, frag_bytes = 0; 4492 struct sk_buff *skb; 4493 4494 skb_queue_walk(&txqi->frags, skb) { 4495 frag_cnt++; 4496 frag_bytes += skb->len; 4497 } 4498 4499 if (frame_cnt) 4500 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4501 4502 if (byte_cnt) 4503 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4504 } 4505 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4506 4507 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4508 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4509 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4510 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4511 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4512 }; 4513 4514 u16 ieee80211_encode_usf(int listen_interval) 4515 { 4516 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4517 u16 ui, usf = 0; 4518 4519 /* find greatest USF */ 4520 while (usf < IEEE80211_MAX_USF) { 4521 if (listen_interval % listen_int_usf[usf + 1]) 4522 break; 4523 usf += 1; 4524 } 4525 ui = listen_interval / listen_int_usf[usf]; 4526 4527 /* error if there is a remainder. Should've been checked by user */ 4528 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4529 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4530 FIELD_PREP(LISTEN_INT_UI, ui); 4531 4532 return (u16) listen_interval; 4533 } 4534 4535 /* this may return more than ieee80211_put_eht_cap() will need */ 4536 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4537 { 4538 const struct ieee80211_sta_he_cap *he_cap; 4539 const struct ieee80211_sta_eht_cap *eht_cap; 4540 struct ieee80211_supported_band *sband; 4541 bool is_ap; 4542 u8 n; 4543 4544 sband = ieee80211_get_sband(sdata); 4545 if (!sband) 4546 return 0; 4547 4548 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4549 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4550 if (!he_cap || !eht_cap) 4551 return 0; 4552 4553 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4554 4555 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4556 &eht_cap->eht_cap_elem, 4557 is_ap); 4558 return 2 + 1 + 4559 sizeof(eht_cap->eht_cap_elem) + n + 4560 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4561 eht_cap->eht_cap_elem.phy_cap_info); 4562 return 0; 4563 } 4564 4565 int ieee80211_put_eht_cap(struct sk_buff *skb, 4566 struct ieee80211_sub_if_data *sdata, 4567 const struct ieee80211_supported_band *sband, 4568 const struct ieee80211_conn_settings *conn) 4569 { 4570 const struct ieee80211_sta_he_cap *he_cap = 4571 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4572 const struct ieee80211_sta_eht_cap *eht_cap = 4573 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4574 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4575 struct ieee80211_eht_cap_elem_fixed fixed; 4576 struct ieee80211_he_cap_elem he; 4577 u8 mcs_nss_len, ppet_len; 4578 u8 orig_mcs_nss_len; 4579 u8 ie_len; 4580 4581 if (!conn) 4582 conn = &ieee80211_conn_settings_unlimited; 4583 4584 /* Make sure we have place for the IE */ 4585 if (!he_cap || !eht_cap) 4586 return 0; 4587 4588 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4589 &eht_cap->eht_cap_elem, 4590 for_ap); 4591 4592 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4593 4594 fixed = eht_cap->eht_cap_elem; 4595 4596 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4597 fixed.phy_cap_info[6] &= 4598 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4599 4600 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4601 fixed.phy_cap_info[1] &= 4602 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4603 fixed.phy_cap_info[2] &= 4604 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4605 fixed.phy_cap_info[6] &= 4606 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4607 } 4608 4609 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4610 fixed.phy_cap_info[0] &= 4611 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4612 fixed.phy_cap_info[1] &= 4613 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4614 fixed.phy_cap_info[2] &= 4615 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4616 fixed.phy_cap_info[6] &= 4617 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4618 } 4619 4620 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4621 fixed.phy_cap_info[0] &= 4622 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4623 4624 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4625 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4626 fixed.phy_cap_info); 4627 4628 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4629 if (skb_tailroom(skb) < ie_len) 4630 return -ENOBUFS; 4631 4632 skb_put_u8(skb, WLAN_EID_EXTENSION); 4633 skb_put_u8(skb, ie_len - 2); 4634 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4635 skb_put_data(skb, &fixed, sizeof(fixed)); 4636 4637 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4638 /* 4639 * If the (non-AP) STA became 20 MHz only, then convert from 4640 * <=80 to 20-MHz-only format, where MCSes are indicated in 4641 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4642 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4643 */ 4644 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4645 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4646 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4647 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4648 } else { 4649 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4650 } 4651 4652 if (ppet_len) 4653 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4654 4655 return 0; 4656 } 4657 4658 int ieee80211_put_uhr_cap(struct sk_buff *skb, 4659 struct ieee80211_sub_if_data *sdata, 4660 const struct ieee80211_supported_band *sband) 4661 { 4662 const struct ieee80211_sta_uhr_cap *uhr_cap = 4663 ieee80211_get_uhr_iftype_cap_vif(sband, &sdata->vif); 4664 int len; 4665 4666 if (!uhr_cap) 4667 return 0; 4668 4669 len = 2 + 1 + sizeof(struct ieee80211_uhr_cap); 4670 4671 if (skb_tailroom(skb) < len) 4672 return -ENOBUFS; 4673 4674 skb_put_u8(skb, WLAN_EID_EXTENSION); 4675 skb_put_u8(skb, len - 2); 4676 skb_put_u8(skb, WLAN_EID_EXT_UHR_CAPA); 4677 skb_put_data(skb, &uhr_cap->mac, sizeof(uhr_cap->mac)); 4678 skb_put_data(skb, &uhr_cap->phy, sizeof(uhr_cap->phy)); 4679 4680 return 0; 4681 } 4682 4683 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4684 { 4685 static const char * const modes[] = { 4686 [IEEE80211_CONN_MODE_S1G] = "S1G", 4687 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4688 [IEEE80211_CONN_MODE_HT] = "HT", 4689 [IEEE80211_CONN_MODE_VHT] = "VHT", 4690 [IEEE80211_CONN_MODE_HE] = "HE", 4691 [IEEE80211_CONN_MODE_EHT] = "EHT", 4692 [IEEE80211_CONN_MODE_UHR] = "UHR", 4693 }; 4694 4695 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4696 return "<out of range>"; 4697 4698 return modes[mode] ?: "<missing string>"; 4699 } 4700 4701 enum ieee80211_conn_bw_limit 4702 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4703 { 4704 switch (chandef->width) { 4705 case NL80211_CHAN_WIDTH_20_NOHT: 4706 case NL80211_CHAN_WIDTH_20: 4707 return IEEE80211_CONN_BW_LIMIT_20; 4708 case NL80211_CHAN_WIDTH_40: 4709 return IEEE80211_CONN_BW_LIMIT_40; 4710 case NL80211_CHAN_WIDTH_80: 4711 return IEEE80211_CONN_BW_LIMIT_80; 4712 case NL80211_CHAN_WIDTH_80P80: 4713 case NL80211_CHAN_WIDTH_160: 4714 return IEEE80211_CONN_BW_LIMIT_160; 4715 case NL80211_CHAN_WIDTH_320: 4716 return IEEE80211_CONN_BW_LIMIT_320; 4717 default: 4718 WARN(1, "unhandled chandef width %d\n", chandef->width); 4719 return IEEE80211_CONN_BW_LIMIT_20; 4720 } 4721 } 4722 4723 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe) 4724 { 4725 for (int i = 0; i < 2; i++) { 4726 tpe->max_local[i].valid = false; 4727 memset(tpe->max_local[i].power, 4728 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4729 sizeof(tpe->max_local[i].power)); 4730 4731 tpe->max_reg_client[i].valid = false; 4732 memset(tpe->max_reg_client[i].power, 4733 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4734 sizeof(tpe->max_reg_client[i].power)); 4735 4736 tpe->psd_local[i].valid = false; 4737 memset(tpe->psd_local[i].power, 4738 IEEE80211_TPE_PSD_NO_LIMIT, 4739 sizeof(tpe->psd_local[i].power)); 4740 4741 tpe->psd_reg_client[i].valid = false; 4742 memset(tpe->psd_reg_client[i].power, 4743 IEEE80211_TPE_PSD_NO_LIMIT, 4744 sizeof(tpe->psd_reg_client[i].power)); 4745 } 4746 } 4747 4748 bool ieee80211_vif_nan_started(struct ieee80211_vif *vif) 4749 { 4750 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4751 4752 return vif->type == NL80211_IFTYPE_NAN && sdata->u.nan.started; 4753 } 4754 EXPORT_SYMBOL_GPL(ieee80211_vif_nan_started); 4755