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 return ext->u.s1g_beacon.sa; 77 } 78 79 if (ieee80211_is_mgmt(fc)) { 80 if (len < 24) /* drop incorrect hdr len (mgmt) */ 81 return NULL; 82 return hdr->addr3; 83 } 84 85 if (ieee80211_is_ctl(fc)) { 86 if (ieee80211_is_pspoll(fc)) 87 return hdr->addr1; 88 89 if (ieee80211_is_back_req(fc)) { 90 switch (type) { 91 case NL80211_IFTYPE_STATION: 92 return hdr->addr2; 93 case NL80211_IFTYPE_AP: 94 case NL80211_IFTYPE_AP_VLAN: 95 return hdr->addr1; 96 default: 97 break; /* fall through to the return */ 98 } 99 } 100 } 101 102 return NULL; 103 } 104 105 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 106 { 107 struct sk_buff *skb; 108 struct ieee80211_hdr *hdr; 109 110 skb_queue_walk(&tx->skbs, skb) { 111 hdr = (struct ieee80211_hdr *) skb->data; 112 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 113 } 114 } 115 116 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 117 int rate, int erp, int short_preamble) 118 { 119 int dur; 120 121 /* calculate duration (in microseconds, rounded up to next higher 122 * integer if it includes a fractional microsecond) to send frame of 123 * len bytes (does not include FCS) at the given rate. Duration will 124 * also include SIFS. 125 * 126 * rate is in 100 kbps, so divident is multiplied by 10 in the 127 * DIV_ROUND_UP() operations. 128 */ 129 130 if (band == NL80211_BAND_5GHZ || erp) { 131 /* 132 * OFDM: 133 * 134 * N_DBPS = DATARATE x 4 135 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 136 * (16 = SIGNAL time, 6 = tail bits) 137 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 138 * 139 * T_SYM = 4 usec 140 * 802.11a - 18.5.2: aSIFSTime = 16 usec 141 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 142 * signal ext = 6 usec 143 */ 144 dur = 16; /* SIFS + signal ext */ 145 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 146 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 147 148 /* rates should already consider the channel bandwidth, 149 * don't apply divisor again. 150 */ 151 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 152 4 * rate); /* T_SYM x N_SYM */ 153 } else { 154 /* 155 * 802.11b or 802.11g with 802.11b compatibility: 156 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 157 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 158 * 159 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 160 * aSIFSTime = 10 usec 161 * aPreambleLength = 144 usec or 72 usec with short preamble 162 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 163 */ 164 dur = 10; /* aSIFSTime = 10 usec */ 165 dur += short_preamble ? (72 + 24) : (144 + 48); 166 167 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 168 } 169 170 return dur; 171 } 172 173 /* Exported duration function for driver use */ 174 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 175 struct ieee80211_vif *vif, 176 enum nl80211_band band, 177 size_t frame_len, 178 struct ieee80211_rate *rate) 179 { 180 struct ieee80211_sub_if_data *sdata; 181 u16 dur; 182 int erp; 183 bool short_preamble = false; 184 185 erp = 0; 186 if (vif) { 187 sdata = vif_to_sdata(vif); 188 short_preamble = sdata->vif.bss_conf.use_short_preamble; 189 if (sdata->deflink.operating_11g_mode) 190 erp = rate->flags & IEEE80211_RATE_ERP_G; 191 } 192 193 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 194 short_preamble); 195 196 return cpu_to_le16(dur); 197 } 198 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 199 200 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 201 struct ieee80211_vif *vif, size_t frame_len, 202 const struct ieee80211_tx_info *frame_txctl) 203 { 204 struct ieee80211_local *local = hw_to_local(hw); 205 struct ieee80211_rate *rate; 206 struct ieee80211_sub_if_data *sdata; 207 bool short_preamble; 208 int erp, bitrate; 209 u16 dur; 210 struct ieee80211_supported_band *sband; 211 212 sband = local->hw.wiphy->bands[frame_txctl->band]; 213 214 short_preamble = false; 215 216 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 217 218 erp = 0; 219 if (vif) { 220 sdata = vif_to_sdata(vif); 221 short_preamble = sdata->vif.bss_conf.use_short_preamble; 222 if (sdata->deflink.operating_11g_mode) 223 erp = rate->flags & IEEE80211_RATE_ERP_G; 224 } 225 226 bitrate = rate->bitrate; 227 228 /* CTS duration */ 229 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 230 erp, short_preamble); 231 /* Data frame duration */ 232 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 233 erp, short_preamble); 234 /* ACK duration */ 235 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 236 erp, short_preamble); 237 238 return cpu_to_le16(dur); 239 } 240 EXPORT_SYMBOL(ieee80211_rts_duration); 241 242 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 243 struct ieee80211_vif *vif, 244 size_t frame_len, 245 const struct ieee80211_tx_info *frame_txctl) 246 { 247 struct ieee80211_local *local = hw_to_local(hw); 248 struct ieee80211_rate *rate; 249 struct ieee80211_sub_if_data *sdata; 250 bool short_preamble; 251 int erp, bitrate; 252 u16 dur; 253 struct ieee80211_supported_band *sband; 254 255 sband = local->hw.wiphy->bands[frame_txctl->band]; 256 257 short_preamble = false; 258 259 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 260 erp = 0; 261 if (vif) { 262 sdata = vif_to_sdata(vif); 263 short_preamble = sdata->vif.bss_conf.use_short_preamble; 264 if (sdata->deflink.operating_11g_mode) 265 erp = rate->flags & IEEE80211_RATE_ERP_G; 266 } 267 268 bitrate = rate->bitrate; 269 270 /* Data frame duration */ 271 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 272 erp, short_preamble); 273 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 274 /* ACK duration */ 275 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 276 erp, short_preamble); 277 } 278 279 return cpu_to_le16(dur); 280 } 281 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 282 283 static void wake_tx_push_queue(struct ieee80211_local *local, 284 struct ieee80211_sub_if_data *sdata, 285 struct ieee80211_txq *queue) 286 { 287 struct ieee80211_tx_control control = { 288 .sta = queue->sta, 289 }; 290 struct sk_buff *skb; 291 292 while (1) { 293 skb = ieee80211_tx_dequeue(&local->hw, queue); 294 if (!skb) 295 break; 296 297 drv_tx(local, &control, skb); 298 } 299 } 300 301 /* wake_tx_queue handler for driver not implementing a custom one*/ 302 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 303 struct ieee80211_txq *txq) 304 { 305 struct ieee80211_local *local = hw_to_local(hw); 306 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 307 struct ieee80211_txq *queue; 308 309 spin_lock(&local->handle_wake_tx_queue_lock); 310 311 /* Use ieee80211_next_txq() for airtime fairness accounting */ 312 ieee80211_txq_schedule_start(hw, txq->ac); 313 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 314 wake_tx_push_queue(local, sdata, queue); 315 ieee80211_return_txq(hw, queue, false); 316 } 317 ieee80211_txq_schedule_end(hw, txq->ac); 318 spin_unlock(&local->handle_wake_tx_queue_lock); 319 } 320 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 321 322 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 323 { 324 struct ieee80211_local *local = sdata->local; 325 struct ieee80211_vif *vif = &sdata->vif; 326 struct fq *fq = &local->fq; 327 struct ps_data *ps = NULL; 328 struct txq_info *txqi; 329 struct sta_info *sta; 330 int i; 331 332 local_bh_disable(); 333 spin_lock(&fq->lock); 334 335 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 336 goto out; 337 338 if (sdata->vif.type == NL80211_IFTYPE_AP) 339 ps = &sdata->bss->ps; 340 341 list_for_each_entry_rcu(sta, &local->sta_list, list) { 342 if (sdata != sta->sdata) 343 continue; 344 345 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 346 struct ieee80211_txq *txq = sta->sta.txq[i]; 347 348 if (!txq) 349 continue; 350 351 txqi = to_txq_info(txq); 352 353 if (ac != txq->ac) 354 continue; 355 356 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 357 &txqi->flags)) 358 continue; 359 360 spin_unlock(&fq->lock); 361 drv_wake_tx_queue(local, txqi); 362 spin_lock(&fq->lock); 363 } 364 } 365 366 if (!vif->txq) 367 goto out; 368 369 txqi = to_txq_info(vif->txq); 370 371 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 372 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 373 goto out; 374 375 spin_unlock(&fq->lock); 376 377 drv_wake_tx_queue(local, txqi); 378 local_bh_enable(); 379 return; 380 out: 381 spin_unlock(&fq->lock); 382 local_bh_enable(); 383 } 384 385 static void 386 __releases(&local->queue_stop_reason_lock) 387 __acquires(&local->queue_stop_reason_lock) 388 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 389 { 390 struct ieee80211_sub_if_data *sdata; 391 int n_acs = IEEE80211_NUM_ACS; 392 int i; 393 394 rcu_read_lock(); 395 396 if (local->hw.queues < IEEE80211_NUM_ACS) 397 n_acs = 1; 398 399 for (i = 0; i < local->hw.queues; i++) { 400 if (local->queue_stop_reasons[i]) 401 continue; 402 403 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 404 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 405 int ac; 406 407 for (ac = 0; ac < n_acs; ac++) { 408 int ac_queue = sdata->vif.hw_queue[ac]; 409 410 if (ac_queue == i || 411 sdata->vif.cab_queue == i) 412 __ieee80211_wake_txqs(sdata, ac); 413 } 414 } 415 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 416 } 417 418 rcu_read_unlock(); 419 } 420 421 void ieee80211_wake_txqs(struct tasklet_struct *t) 422 { 423 struct ieee80211_local *local = from_tasklet(local, t, 424 wake_txqs_tasklet); 425 unsigned long flags; 426 427 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 428 _ieee80211_wake_txqs(local, &flags); 429 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 430 } 431 432 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 433 enum queue_stop_reason reason, 434 bool refcounted, 435 unsigned long *flags) 436 { 437 struct ieee80211_local *local = hw_to_local(hw); 438 439 if (WARN_ON(queue >= hw->queues)) 440 return; 441 442 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 443 return; 444 445 if (!refcounted) { 446 local->q_stop_reasons[queue][reason] = 0; 447 } else { 448 local->q_stop_reasons[queue][reason]--; 449 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 450 local->q_stop_reasons[queue][reason] = 0; 451 } 452 453 if (local->q_stop_reasons[queue][reason] == 0) 454 __clear_bit(reason, &local->queue_stop_reasons[queue]); 455 456 trace_wake_queue(local, queue, reason, 457 local->q_stop_reasons[queue][reason]); 458 459 if (local->queue_stop_reasons[queue] != 0) 460 /* someone still has this queue stopped */ 461 return; 462 463 if (!skb_queue_empty(&local->pending[queue])) 464 tasklet_schedule(&local->tx_pending_tasklet); 465 466 /* 467 * Calling _ieee80211_wake_txqs here can be a problem because it may 468 * release queue_stop_reason_lock which has been taken by 469 * __ieee80211_wake_queue's caller. It is certainly not very nice to 470 * release someone's lock, but it is fine because all the callers of 471 * __ieee80211_wake_queue call it right before releasing the lock. 472 */ 473 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 474 tasklet_schedule(&local->wake_txqs_tasklet); 475 else 476 _ieee80211_wake_txqs(local, flags); 477 } 478 479 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 480 enum queue_stop_reason reason, 481 bool refcounted) 482 { 483 struct ieee80211_local *local = hw_to_local(hw); 484 unsigned long flags; 485 486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 487 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 489 } 490 491 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 492 { 493 ieee80211_wake_queue_by_reason(hw, queue, 494 IEEE80211_QUEUE_STOP_REASON_DRIVER, 495 false); 496 } 497 EXPORT_SYMBOL(ieee80211_wake_queue); 498 499 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 500 enum queue_stop_reason reason, 501 bool refcounted) 502 { 503 struct ieee80211_local *local = hw_to_local(hw); 504 505 if (WARN_ON(queue >= hw->queues)) 506 return; 507 508 if (!refcounted) 509 local->q_stop_reasons[queue][reason] = 1; 510 else 511 local->q_stop_reasons[queue][reason]++; 512 513 trace_stop_queue(local, queue, reason, 514 local->q_stop_reasons[queue][reason]); 515 516 set_bit(reason, &local->queue_stop_reasons[queue]); 517 } 518 519 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 520 enum queue_stop_reason reason, 521 bool refcounted) 522 { 523 struct ieee80211_local *local = hw_to_local(hw); 524 unsigned long flags; 525 526 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 527 __ieee80211_stop_queue(hw, queue, reason, refcounted); 528 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 529 } 530 531 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 532 { 533 ieee80211_stop_queue_by_reason(hw, queue, 534 IEEE80211_QUEUE_STOP_REASON_DRIVER, 535 false); 536 } 537 EXPORT_SYMBOL(ieee80211_stop_queue); 538 539 void ieee80211_add_pending_skb(struct ieee80211_local *local, 540 struct sk_buff *skb) 541 { 542 struct ieee80211_hw *hw = &local->hw; 543 unsigned long flags; 544 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 545 int queue = info->hw_queue; 546 547 if (WARN_ON(!info->control.vif)) { 548 ieee80211_free_txskb(&local->hw, skb); 549 return; 550 } 551 552 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 553 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 554 false); 555 __skb_queue_tail(&local->pending[queue], skb); 556 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 557 false, &flags); 558 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 559 } 560 561 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 562 struct sk_buff_head *skbs) 563 { 564 struct ieee80211_hw *hw = &local->hw; 565 struct sk_buff *skb; 566 unsigned long flags; 567 int queue, i; 568 569 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 570 while ((skb = skb_dequeue(skbs))) { 571 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 572 573 if (WARN_ON(!info->control.vif)) { 574 ieee80211_free_txskb(&local->hw, skb); 575 continue; 576 } 577 578 queue = info->hw_queue; 579 580 __ieee80211_stop_queue(hw, queue, 581 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 582 false); 583 584 __skb_queue_tail(&local->pending[queue], skb); 585 } 586 587 for (i = 0; i < hw->queues; i++) 588 __ieee80211_wake_queue(hw, i, 589 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 590 false, &flags); 591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 592 } 593 594 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 595 unsigned long queues, 596 enum queue_stop_reason reason, 597 bool refcounted) 598 { 599 struct ieee80211_local *local = hw_to_local(hw); 600 unsigned long flags; 601 int i; 602 603 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 604 605 for_each_set_bit(i, &queues, hw->queues) 606 __ieee80211_stop_queue(hw, i, reason, refcounted); 607 608 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 609 } 610 611 void ieee80211_stop_queues(struct ieee80211_hw *hw) 612 { 613 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 614 IEEE80211_QUEUE_STOP_REASON_DRIVER, 615 false); 616 } 617 EXPORT_SYMBOL(ieee80211_stop_queues); 618 619 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 620 { 621 struct ieee80211_local *local = hw_to_local(hw); 622 unsigned long flags; 623 int ret; 624 625 if (WARN_ON(queue >= hw->queues)) 626 return true; 627 628 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 629 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 630 &local->queue_stop_reasons[queue]); 631 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 632 return ret; 633 } 634 EXPORT_SYMBOL(ieee80211_queue_stopped); 635 636 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 637 unsigned long queues, 638 enum queue_stop_reason reason, 639 bool refcounted) 640 { 641 struct ieee80211_local *local = hw_to_local(hw); 642 unsigned long flags; 643 int i; 644 645 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 646 647 for_each_set_bit(i, &queues, hw->queues) 648 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 649 650 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 651 } 652 653 void ieee80211_wake_queues(struct ieee80211_hw *hw) 654 { 655 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 656 IEEE80211_QUEUE_STOP_REASON_DRIVER, 657 false); 658 } 659 EXPORT_SYMBOL(ieee80211_wake_queues); 660 661 unsigned int 662 ieee80211_get_vif_queues(struct ieee80211_local *local, 663 struct ieee80211_sub_if_data *sdata) 664 { 665 unsigned int queues; 666 667 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 668 int ac; 669 670 queues = 0; 671 672 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 673 if (sdata->vif.hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 674 queues |= BIT(sdata->vif.hw_queue[ac]); 675 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 676 queues |= BIT(sdata->vif.cab_queue); 677 } else { 678 /* all queues */ 679 queues = BIT(local->hw.queues) - 1; 680 } 681 682 return queues; 683 } 684 685 void __ieee80211_flush_queues(struct ieee80211_local *local, 686 struct ieee80211_sub_if_data *sdata, 687 unsigned int queues, bool drop) 688 { 689 if (!local->ops->flush && !drop) 690 return; 691 692 /* 693 * If no queue was set, or if the HW doesn't support 694 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 695 */ 696 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 697 queues = ieee80211_get_vif_queues(local, sdata); 698 699 ieee80211_stop_queues_by_reason(&local->hw, queues, 700 IEEE80211_QUEUE_STOP_REASON_FLUSH, 701 false); 702 703 if (drop) { 704 struct sta_info *sta; 705 706 /* Purge the queues, so the frames on them won't be 707 * sent during __ieee80211_wake_queue() 708 */ 709 list_for_each_entry(sta, &local->sta_list, list) { 710 if (sdata != sta->sdata) 711 continue; 712 ieee80211_purge_sta_txqs(sta); 713 } 714 } 715 716 if (local->ops->flush) 717 drv_flush(local, sdata, queues, drop); 718 719 ieee80211_wake_queues_by_reason(&local->hw, queues, 720 IEEE80211_QUEUE_STOP_REASON_FLUSH, 721 false); 722 } 723 724 void ieee80211_flush_queues(struct ieee80211_local *local, 725 struct ieee80211_sub_if_data *sdata, bool drop) 726 { 727 __ieee80211_flush_queues(local, sdata, 0, drop); 728 } 729 730 static void __iterate_interfaces(struct ieee80211_local *local, 731 u32 iter_flags, 732 void (*iterator)(void *data, u8 *mac, 733 struct ieee80211_vif *vif), 734 void *data) 735 { 736 struct ieee80211_sub_if_data *sdata; 737 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 738 739 list_for_each_entry_rcu(sdata, &local->interfaces, list, 740 lockdep_is_held(&local->iflist_mtx) || 741 lockdep_is_held(&local->hw.wiphy->mtx)) { 742 switch (sdata->vif.type) { 743 case NL80211_IFTYPE_MONITOR: 744 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 745 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 746 continue; 747 break; 748 case NL80211_IFTYPE_AP_VLAN: 749 continue; 750 default: 751 break; 752 } 753 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 754 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 755 continue; 756 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 757 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 758 continue; 759 if (ieee80211_sdata_running(sdata) || !active_only) 760 iterator(data, sdata->vif.addr, 761 &sdata->vif); 762 } 763 764 sdata = rcu_dereference_check(local->monitor_sdata, 765 lockdep_is_held(&local->iflist_mtx) || 766 lockdep_is_held(&local->hw.wiphy->mtx)); 767 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 768 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 769 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 iterator(data, sdata->vif.addr, &sdata->vif); 771 } 772 773 void ieee80211_iterate_interfaces( 774 struct ieee80211_hw *hw, u32 iter_flags, 775 void (*iterator)(void *data, u8 *mac, 776 struct ieee80211_vif *vif), 777 void *data) 778 { 779 struct ieee80211_local *local = hw_to_local(hw); 780 781 mutex_lock(&local->iflist_mtx); 782 __iterate_interfaces(local, iter_flags, iterator, data); 783 mutex_unlock(&local->iflist_mtx); 784 } 785 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 786 787 void ieee80211_iterate_active_interfaces_atomic( 788 struct ieee80211_hw *hw, u32 iter_flags, 789 void (*iterator)(void *data, u8 *mac, 790 struct ieee80211_vif *vif), 791 void *data) 792 { 793 struct ieee80211_local *local = hw_to_local(hw); 794 795 rcu_read_lock(); 796 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 797 iterator, data); 798 rcu_read_unlock(); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 801 802 struct ieee80211_vif * 803 __ieee80211_iterate_interfaces(struct ieee80211_hw *hw, 804 struct ieee80211_vif *prev, 805 u32 iter_flags) 806 { 807 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 808 struct ieee80211_sub_if_data *sdata = NULL, *monitor; 809 struct ieee80211_local *local = hw_to_local(hw); 810 811 lockdep_assert_wiphy(hw->wiphy); 812 813 if (prev) 814 sdata = vif_to_sdata(prev); 815 816 monitor = rcu_dereference_check(local->monitor_sdata, 817 lockdep_is_held(&hw->wiphy->mtx)); 818 if (monitor && monitor == sdata) 819 return NULL; 820 821 sdata = list_prepare_entry(sdata, &local->interfaces, list); 822 list_for_each_entry_continue(sdata, &local->interfaces, list) { 823 switch (sdata->vif.type) { 824 case NL80211_IFTYPE_MONITOR: 825 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 826 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 827 continue; 828 break; 829 case NL80211_IFTYPE_AP_VLAN: 830 continue; 831 default: 832 break; 833 } 834 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 835 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 836 continue; 837 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 838 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 839 continue; 840 if (ieee80211_sdata_running(sdata) || !active_only) 841 return &sdata->vif; 842 } 843 844 if (monitor && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 845 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 846 monitor->flags & IEEE80211_SDATA_IN_DRIVER)) 847 return &monitor->vif; 848 849 return NULL; 850 } 851 EXPORT_SYMBOL_GPL(__ieee80211_iterate_interfaces); 852 853 static void __iterate_stations(struct ieee80211_local *local, 854 void (*iterator)(void *data, 855 struct ieee80211_sta *sta), 856 void *data) 857 { 858 struct sta_info *sta; 859 860 list_for_each_entry_rcu(sta, &local->sta_list, list, 861 lockdep_is_held(&local->hw.wiphy->mtx)) { 862 if (!sta->uploaded) 863 continue; 864 865 iterator(data, &sta->sta); 866 } 867 } 868 869 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 870 void (*iterator)(void *data, 871 struct ieee80211_sta *sta), 872 void *data) 873 { 874 struct ieee80211_local *local = hw_to_local(hw); 875 876 rcu_read_lock(); 877 __iterate_stations(local, iterator, data); 878 rcu_read_unlock(); 879 } 880 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 881 882 struct ieee80211_sta * 883 __ieee80211_iterate_stations(struct ieee80211_hw *hw, 884 struct ieee80211_sta *prev) 885 { 886 struct ieee80211_local *local = hw_to_local(hw); 887 struct sta_info *sta = NULL; 888 889 lockdep_assert_wiphy(local->hw.wiphy); 890 891 if (prev) 892 sta = container_of(prev, struct sta_info, sta); 893 894 sta = list_prepare_entry(sta, &local->sta_list, list); 895 list_for_each_entry_continue(sta, &local->sta_list, list) { 896 if (!sta->uploaded) 897 continue; 898 899 return &sta->sta; 900 } 901 902 return NULL; 903 } 904 EXPORT_SYMBOL_GPL(__ieee80211_iterate_stations); 905 906 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 907 { 908 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 909 910 if (!ieee80211_sdata_running(sdata) || 911 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 912 return NULL; 913 return &sdata->vif; 914 } 915 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 916 917 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 918 { 919 if (!vif) 920 return NULL; 921 922 return &vif_to_sdata(vif)->wdev; 923 } 924 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 925 926 /* 927 * Nothing should have been stuffed into the workqueue during 928 * the suspend->resume cycle. Since we can't check each caller 929 * of this function if we are already quiescing / suspended, 930 * check here and don't WARN since this can actually happen when 931 * the rx path (for example) is racing against __ieee80211_suspend 932 * and suspending / quiescing was set after the rx path checked 933 * them. 934 */ 935 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 936 { 937 if (local->quiescing || (local->suspended && !local->resuming)) { 938 pr_warn("queueing ieee80211 work while going to suspend\n"); 939 return false; 940 } 941 942 return true; 943 } 944 945 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 946 { 947 struct ieee80211_local *local = hw_to_local(hw); 948 949 if (!ieee80211_can_queue_work(local)) 950 return; 951 952 queue_work(local->workqueue, work); 953 } 954 EXPORT_SYMBOL(ieee80211_queue_work); 955 956 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 957 struct delayed_work *dwork, 958 unsigned long delay) 959 { 960 struct ieee80211_local *local = hw_to_local(hw); 961 962 if (!ieee80211_can_queue_work(local)) 963 return; 964 965 queue_delayed_work(local->workqueue, dwork, delay); 966 } 967 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 968 969 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 970 struct ieee80211_tx_queue_params 971 *qparam, int ac) 972 { 973 struct ieee80211_chanctx_conf *chanctx_conf; 974 const struct ieee80211_reg_rule *rrule; 975 const struct ieee80211_wmm_ac *wmm_ac; 976 u16 center_freq = 0; 977 978 if (sdata->vif.type != NL80211_IFTYPE_AP && 979 sdata->vif.type != NL80211_IFTYPE_STATION) 980 return; 981 982 rcu_read_lock(); 983 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 984 if (chanctx_conf) 985 center_freq = chanctx_conf->def.chan->center_freq; 986 987 if (!center_freq) { 988 rcu_read_unlock(); 989 return; 990 } 991 992 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 993 994 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 995 rcu_read_unlock(); 996 return; 997 } 998 999 if (sdata->vif.type == NL80211_IFTYPE_AP) 1000 wmm_ac = &rrule->wmm_rule.ap[ac]; 1001 else 1002 wmm_ac = &rrule->wmm_rule.client[ac]; 1003 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1004 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1005 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1006 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1007 rcu_read_unlock(); 1008 } 1009 1010 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1011 bool bss_notify, bool enable_qos) 1012 { 1013 struct ieee80211_sub_if_data *sdata = link->sdata; 1014 struct ieee80211_local *local = sdata->local; 1015 struct ieee80211_tx_queue_params qparam; 1016 struct ieee80211_chanctx_conf *chanctx_conf; 1017 int ac; 1018 bool use_11b; 1019 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1020 int aCWmin, aCWmax; 1021 1022 if (!local->ops->conf_tx) 1023 return; 1024 1025 if (local->hw.queues < IEEE80211_NUM_ACS) 1026 return; 1027 1028 memset(&qparam, 0, sizeof(qparam)); 1029 1030 rcu_read_lock(); 1031 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1032 use_11b = (chanctx_conf && 1033 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1034 !link->operating_11g_mode; 1035 rcu_read_unlock(); 1036 1037 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1038 1039 /* Set defaults according to 802.11-2007 Table 7-37 */ 1040 aCWmax = 1023; 1041 if (use_11b) 1042 aCWmin = 31; 1043 else 1044 aCWmin = 15; 1045 1046 /* Configure old 802.11b/g medium access rules. */ 1047 qparam.cw_max = aCWmax; 1048 qparam.cw_min = aCWmin; 1049 qparam.txop = 0; 1050 qparam.aifs = 2; 1051 1052 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1053 /* Update if QoS is enabled. */ 1054 if (enable_qos) { 1055 switch (ac) { 1056 case IEEE80211_AC_BK: 1057 qparam.cw_max = aCWmax; 1058 qparam.cw_min = aCWmin; 1059 qparam.txop = 0; 1060 if (is_ocb) 1061 qparam.aifs = 9; 1062 else 1063 qparam.aifs = 7; 1064 break; 1065 /* never happens but let's not leave undefined */ 1066 default: 1067 case IEEE80211_AC_BE: 1068 qparam.cw_max = aCWmax; 1069 qparam.cw_min = aCWmin; 1070 qparam.txop = 0; 1071 if (is_ocb) 1072 qparam.aifs = 6; 1073 else 1074 qparam.aifs = 3; 1075 break; 1076 case IEEE80211_AC_VI: 1077 qparam.cw_max = aCWmin; 1078 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1079 if (is_ocb) 1080 qparam.txop = 0; 1081 else if (use_11b) 1082 qparam.txop = 6016/32; 1083 else 1084 qparam.txop = 3008/32; 1085 1086 if (is_ocb) 1087 qparam.aifs = 3; 1088 else 1089 qparam.aifs = 2; 1090 break; 1091 case IEEE80211_AC_VO: 1092 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1093 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1094 if (is_ocb) 1095 qparam.txop = 0; 1096 else if (use_11b) 1097 qparam.txop = 3264/32; 1098 else 1099 qparam.txop = 1504/32; 1100 qparam.aifs = 2; 1101 break; 1102 } 1103 } 1104 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1105 1106 qparam.uapsd = false; 1107 1108 link->tx_conf[ac] = qparam; 1109 drv_conf_tx(local, link, ac, &qparam); 1110 } 1111 1112 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1113 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1114 sdata->vif.type != NL80211_IFTYPE_NAN) { 1115 link->conf->qos = enable_qos; 1116 if (bss_notify) 1117 ieee80211_link_info_change_notify(sdata, link, 1118 BSS_CHANGED_QOS); 1119 } 1120 } 1121 1122 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1123 u16 transaction, u16 auth_alg, u16 status, 1124 const u8 *extra, size_t extra_len, const u8 *da, 1125 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1126 u32 tx_flags) 1127 { 1128 struct ieee80211_local *local = sdata->local; 1129 struct sk_buff *skb; 1130 struct ieee80211_mgmt *mgmt; 1131 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1132 struct { 1133 u8 id; 1134 u8 len; 1135 u8 ext_id; 1136 struct ieee80211_multi_link_elem ml; 1137 struct ieee80211_mle_basic_common_info basic; 1138 } __packed mle = { 1139 .id = WLAN_EID_EXTENSION, 1140 .len = sizeof(mle) - 2, 1141 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1142 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1143 .basic.len = sizeof(mle.basic), 1144 }; 1145 bool add_mle; 1146 int err; 1147 1148 add_mle = (multi_link && 1149 !cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK, 1150 extra, extra_len)); 1151 1152 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1153 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1154 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1155 add_mle * sizeof(mle)); 1156 if (!skb) 1157 return; 1158 1159 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1160 1161 mgmt = skb_put_zero(skb, 24 + 6); 1162 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1163 IEEE80211_STYPE_AUTH); 1164 memcpy(mgmt->da, da, ETH_ALEN); 1165 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1166 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1167 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1168 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1169 mgmt->u.auth.status_code = cpu_to_le16(status); 1170 if (extra) 1171 skb_put_data(skb, extra, extra_len); 1172 1173 if (add_mle) { 1174 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1175 skb_put_data(skb, &mle, sizeof(mle)); 1176 } 1177 1178 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1179 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1180 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1181 if (WARN_ON(err)) { 1182 kfree_skb(skb); 1183 return; 1184 } 1185 } 1186 1187 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1188 tx_flags; 1189 ieee80211_tx_skb(sdata, skb); 1190 } 1191 1192 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1193 const u8 *da, const u8 *bssid, 1194 u16 stype, u16 reason, 1195 bool send_frame, u8 *frame_buf) 1196 { 1197 struct ieee80211_local *local = sdata->local; 1198 struct sk_buff *skb; 1199 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1200 1201 /* build frame */ 1202 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1203 mgmt->duration = 0; /* initialize only */ 1204 mgmt->seq_ctrl = 0; /* initialize only */ 1205 memcpy(mgmt->da, da, ETH_ALEN); 1206 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1207 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1208 /* u.deauth.reason_code == u.disassoc.reason_code */ 1209 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1210 1211 if (send_frame) { 1212 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1213 IEEE80211_DEAUTH_FRAME_LEN); 1214 if (!skb) 1215 return; 1216 1217 skb_reserve(skb, local->hw.extra_tx_headroom); 1218 1219 /* copy in frame */ 1220 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1221 1222 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1223 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1224 IEEE80211_SKB_CB(skb)->flags |= 1225 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1226 1227 ieee80211_tx_skb(sdata, skb); 1228 } 1229 } 1230 1231 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1232 struct ieee80211_sta_s1g_cap *s1g_cap) 1233 { 1234 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1235 return -ENOBUFS; 1236 1237 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1238 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1239 1240 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1241 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1242 1243 return 0; 1244 } 1245 1246 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1247 struct ieee80211_sub_if_data *sdata, 1248 const u8 *ie, size_t ie_len, 1249 size_t *offset, 1250 enum nl80211_band band, 1251 u32 rate_mask, 1252 struct cfg80211_chan_def *chandef, 1253 u32 flags) 1254 { 1255 struct ieee80211_local *local = sdata->local; 1256 struct ieee80211_supported_band *sband; 1257 int i, err; 1258 size_t noffset; 1259 bool have_80mhz = false; 1260 1261 *offset = 0; 1262 1263 sband = local->hw.wiphy->bands[band]; 1264 if (WARN_ON_ONCE(!sband)) 1265 return 0; 1266 1267 /* For direct scan add S1G IE and consider its override bits */ 1268 if (band == NL80211_BAND_S1GHZ) 1269 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1270 1271 err = ieee80211_put_srates_elem(skb, sband, 0, 1272 ~rate_mask, WLAN_EID_SUPP_RATES); 1273 if (err) 1274 return err; 1275 1276 /* insert "request information" if in custom IEs */ 1277 if (ie && ie_len) { 1278 static const u8 before_extrates[] = { 1279 WLAN_EID_SSID, 1280 WLAN_EID_SUPP_RATES, 1281 WLAN_EID_REQUEST, 1282 }; 1283 noffset = ieee80211_ie_split(ie, ie_len, 1284 before_extrates, 1285 ARRAY_SIZE(before_extrates), 1286 *offset); 1287 if (skb_tailroom(skb) < noffset - *offset) 1288 return -ENOBUFS; 1289 skb_put_data(skb, ie + *offset, noffset - *offset); 1290 *offset = noffset; 1291 } 1292 1293 err = ieee80211_put_srates_elem(skb, sband, 0, 1294 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1295 if (err) 1296 return err; 1297 1298 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1299 if (skb_tailroom(skb) < 3) 1300 return -ENOBUFS; 1301 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1302 skb_put_u8(skb, 1); 1303 skb_put_u8(skb, 1304 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1305 } 1306 1307 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1308 return 0; 1309 1310 /* insert custom IEs that go before HT */ 1311 if (ie && ie_len) { 1312 static const u8 before_ht[] = { 1313 /* 1314 * no need to list the ones split off already 1315 * (or generated here) 1316 */ 1317 WLAN_EID_DS_PARAMS, 1318 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1319 }; 1320 noffset = ieee80211_ie_split(ie, ie_len, 1321 before_ht, ARRAY_SIZE(before_ht), 1322 *offset); 1323 if (skb_tailroom(skb) < noffset - *offset) 1324 return -ENOBUFS; 1325 skb_put_data(skb, ie + *offset, noffset - *offset); 1326 *offset = noffset; 1327 } 1328 1329 if (sband->ht_cap.ht_supported) { 1330 u8 *pos; 1331 1332 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1333 return -ENOBUFS; 1334 1335 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1336 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1337 sband->ht_cap.cap); 1338 } 1339 1340 /* insert custom IEs that go before VHT */ 1341 if (ie && ie_len) { 1342 static const u8 before_vht[] = { 1343 /* 1344 * no need to list the ones split off already 1345 * (or generated here) 1346 */ 1347 WLAN_EID_BSS_COEX_2040, 1348 WLAN_EID_EXT_CAPABILITY, 1349 WLAN_EID_SSID_LIST, 1350 WLAN_EID_CHANNEL_USAGE, 1351 WLAN_EID_INTERWORKING, 1352 WLAN_EID_MESH_ID, 1353 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1354 }; 1355 noffset = ieee80211_ie_split(ie, ie_len, 1356 before_vht, ARRAY_SIZE(before_vht), 1357 *offset); 1358 if (skb_tailroom(skb) < noffset - *offset) 1359 return -ENOBUFS; 1360 skb_put_data(skb, ie + *offset, noffset - *offset); 1361 *offset = noffset; 1362 } 1363 1364 /* Check if any channel in this sband supports at least 80 MHz */ 1365 for (i = 0; i < sband->n_channels; i++) { 1366 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1367 IEEE80211_CHAN_NO_80MHZ)) 1368 continue; 1369 1370 have_80mhz = true; 1371 break; 1372 } 1373 1374 if (sband->vht_cap.vht_supported && have_80mhz) { 1375 u8 *pos; 1376 1377 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1378 return -ENOBUFS; 1379 1380 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1381 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1382 sband->vht_cap.cap); 1383 } 1384 1385 /* insert custom IEs that go before HE */ 1386 if (ie && ie_len) { 1387 static const u8 before_he[] = { 1388 /* 1389 * no need to list the ones split off before VHT 1390 * or generated here 1391 */ 1392 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1393 WLAN_EID_AP_CSN, 1394 /* TODO: add 11ah/11aj/11ak elements */ 1395 }; 1396 noffset = ieee80211_ie_split(ie, ie_len, 1397 before_he, ARRAY_SIZE(before_he), 1398 *offset); 1399 if (skb_tailroom(skb) < noffset - *offset) 1400 return -ENOBUFS; 1401 skb_put_data(skb, ie + *offset, noffset - *offset); 1402 *offset = noffset; 1403 } 1404 1405 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1406 IEEE80211_CHAN_NO_HE)) { 1407 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1408 if (err) 1409 return err; 1410 } 1411 1412 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1413 IEEE80211_CHAN_NO_HE | 1414 IEEE80211_CHAN_NO_EHT)) { 1415 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1416 if (err) 1417 return err; 1418 } 1419 1420 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1421 if (err) 1422 return err; 1423 1424 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1425 IEEE80211_CHAN_NO_UHR)) { 1426 err = ieee80211_put_uhr_cap(skb, sdata, sband); 1427 if (err) 1428 return err; 1429 } 1430 1431 /* 1432 * If adding more here, adjust code in main.c 1433 * that calculates local->scan_ies_len. 1434 */ 1435 1436 return 0; 1437 } 1438 1439 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1440 struct ieee80211_sub_if_data *sdata, 1441 struct ieee80211_scan_ies *ie_desc, 1442 const u8 *ie, size_t ie_len, 1443 u8 bands_used, u32 *rate_masks, 1444 struct cfg80211_chan_def *chandef, 1445 u32 flags) 1446 { 1447 size_t custom_ie_offset = 0; 1448 int i, err; 1449 1450 memset(ie_desc, 0, sizeof(*ie_desc)); 1451 1452 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1453 if (bands_used & BIT(i)) { 1454 ie_desc->ies[i] = skb_tail_pointer(skb); 1455 err = ieee80211_put_preq_ies_band(skb, sdata, 1456 ie, ie_len, 1457 &custom_ie_offset, 1458 i, rate_masks[i], 1459 chandef, flags); 1460 if (err) 1461 return err; 1462 ie_desc->len[i] = skb_tail_pointer(skb) - 1463 ie_desc->ies[i]; 1464 } 1465 } 1466 1467 /* add any remaining custom IEs */ 1468 if (ie && ie_len) { 1469 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1470 "not enough space for preq custom IEs\n")) 1471 return -ENOBUFS; 1472 ie_desc->common_ies = skb_tail_pointer(skb); 1473 skb_put_data(skb, ie + custom_ie_offset, 1474 ie_len - custom_ie_offset); 1475 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1476 ie_desc->common_ies; 1477 } 1478 1479 return 0; 1480 }; 1481 1482 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1483 size_t buffer_len, 1484 struct ieee80211_scan_ies *ie_desc, 1485 const u8 *ie, size_t ie_len, 1486 u8 bands_used, u32 *rate_masks, 1487 struct cfg80211_chan_def *chandef, 1488 u32 flags) 1489 { 1490 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1491 uintptr_t offs; 1492 int ret, i; 1493 u8 *start; 1494 1495 if (!skb) 1496 return -ENOMEM; 1497 1498 start = skb_tail_pointer(skb); 1499 memset(start, 0, skb_tailroom(skb)); 1500 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1501 bands_used, rate_masks, chandef, 1502 flags); 1503 if (ret < 0) { 1504 goto out; 1505 } 1506 1507 if (skb->len > buffer_len) { 1508 ret = -ENOBUFS; 1509 goto out; 1510 } 1511 1512 memcpy(buffer, start, skb->len); 1513 1514 /* adjust ie_desc for copy */ 1515 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1516 offs = ie_desc->ies[i] - start; 1517 ie_desc->ies[i] = buffer + offs; 1518 } 1519 offs = ie_desc->common_ies - start; 1520 ie_desc->common_ies = buffer + offs; 1521 1522 ret = skb->len; 1523 out: 1524 consume_skb(skb); 1525 return ret; 1526 } 1527 1528 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1529 const u8 *src, const u8 *dst, 1530 u32 ratemask, 1531 struct ieee80211_channel *chan, 1532 const u8 *ssid, size_t ssid_len, 1533 const u8 *ie, size_t ie_len, 1534 u32 flags) 1535 { 1536 struct ieee80211_local *local = sdata->local; 1537 struct cfg80211_chan_def chandef; 1538 struct sk_buff *skb; 1539 struct ieee80211_mgmt *mgmt; 1540 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1541 struct ieee80211_scan_ies dummy_ie_desc; 1542 1543 /* 1544 * Do not send DS Channel parameter for directed probe requests 1545 * in order to maximize the chance that we get a response. Some 1546 * badly-behaved APs don't respond when this parameter is included. 1547 */ 1548 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1549 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1550 chandef.chan = NULL; 1551 else 1552 chandef.chan = chan; 1553 1554 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1555 local->scan_ies_len + ie_len); 1556 if (!skb) 1557 return NULL; 1558 1559 rate_masks[chan->band] = ratemask; 1560 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1561 ie, ie_len, BIT(chan->band), 1562 rate_masks, &chandef, flags); 1563 1564 if (dst) { 1565 mgmt = (struct ieee80211_mgmt *) skb->data; 1566 memcpy(mgmt->da, dst, ETH_ALEN); 1567 memcpy(mgmt->bssid, dst, ETH_ALEN); 1568 } 1569 1570 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1571 1572 return skb; 1573 } 1574 1575 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1576 struct ieee802_11_elems *elems, 1577 enum nl80211_band band, u32 *basic_rates) 1578 { 1579 struct ieee80211_supported_band *sband; 1580 size_t num_rates; 1581 u32 supp_rates; 1582 int i, j; 1583 1584 sband = sdata->local->hw.wiphy->bands[band]; 1585 if (WARN_ON(!sband)) 1586 return 1; 1587 1588 num_rates = sband->n_bitrates; 1589 supp_rates = 0; 1590 for (i = 0; i < elems->supp_rates_len + 1591 elems->ext_supp_rates_len; i++) { 1592 u8 rate = 0; 1593 int own_rate; 1594 bool is_basic; 1595 if (i < elems->supp_rates_len) 1596 rate = elems->supp_rates[i]; 1597 else if (elems->ext_supp_rates) 1598 rate = elems->ext_supp_rates 1599 [i - elems->supp_rates_len]; 1600 own_rate = 5 * (rate & 0x7f); 1601 is_basic = !!(rate & 0x80); 1602 1603 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1604 continue; 1605 1606 for (j = 0; j < num_rates; j++) { 1607 int brate = sband->bitrates[j].bitrate; 1608 1609 if (brate == own_rate) { 1610 supp_rates |= BIT(j); 1611 if (basic_rates && is_basic) 1612 *basic_rates |= BIT(j); 1613 } 1614 } 1615 } 1616 return supp_rates; 1617 } 1618 1619 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend) 1620 { 1621 local_bh_disable(); 1622 ieee80211_handle_queued_frames(local); 1623 local_bh_enable(); 1624 1625 ieee80211_led_radio(local, false); 1626 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1627 1628 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1629 1630 flush_workqueue(local->workqueue); 1631 wiphy_work_flush(local->hw.wiphy, NULL); 1632 drv_stop(local, suspend); 1633 } 1634 1635 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1636 bool aborted) 1637 { 1638 /* It's possible that we don't handle the scan completion in 1639 * time during suspend, so if it's still marked as completed 1640 * here, queue the work and flush it to clean things up. 1641 * Instead of calling the worker function directly here, we 1642 * really queue it to avoid potential races with other flows 1643 * scheduling the same work. 1644 */ 1645 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1646 /* If coming from reconfiguration failure, abort the scan so 1647 * we don't attempt to continue a partial HW scan - which is 1648 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1649 * completed scan, and a 5 GHz portion is still pending. 1650 */ 1651 if (aborted) 1652 set_bit(SCAN_ABORTED, &local->scanning); 1653 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1654 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1655 } 1656 } 1657 1658 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1659 { 1660 struct ieee80211_sub_if_data *sdata; 1661 struct ieee80211_chanctx *ctx; 1662 1663 lockdep_assert_wiphy(local->hw.wiphy); 1664 1665 /* 1666 * We get here if during resume the device can't be restarted properly. 1667 * We might also get here if this happens during HW reset, which is a 1668 * slightly different situation and we need to drop all connections in 1669 * the latter case. 1670 * 1671 * Ask cfg80211 to turn off all interfaces, this will result in more 1672 * warnings but at least we'll then get into a clean stopped state. 1673 */ 1674 1675 local->resuming = false; 1676 local->suspended = false; 1677 local->in_reconfig = false; 1678 local->reconfig_failure = true; 1679 1680 ieee80211_flush_completed_scan(local, true); 1681 1682 /* scheduled scan clearly can't be running any more, but tell 1683 * cfg80211 and clear local state 1684 */ 1685 ieee80211_sched_scan_end(local); 1686 1687 list_for_each_entry(sdata, &local->interfaces, list) 1688 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1689 1690 /* Mark channel contexts as not being in the driver any more to avoid 1691 * removing them from the driver during the shutdown process... 1692 */ 1693 list_for_each_entry(ctx, &local->chanctx_list, list) 1694 ctx->driver_present = false; 1695 } 1696 1697 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1698 struct ieee80211_sub_if_data *sdata, 1699 struct ieee80211_link_data *link) 1700 { 1701 struct ieee80211_chanctx_conf *conf; 1702 struct ieee80211_chanctx *ctx; 1703 1704 lockdep_assert_wiphy(local->hw.wiphy); 1705 1706 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1707 lockdep_is_held(&local->hw.wiphy->mtx)); 1708 if (conf) { 1709 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1710 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1711 } 1712 } 1713 1714 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1715 { 1716 struct ieee80211_local *local = sdata->local; 1717 struct sta_info *sta; 1718 1719 lockdep_assert_wiphy(local->hw.wiphy); 1720 1721 /* add STAs back */ 1722 list_for_each_entry(sta, &local->sta_list, list) { 1723 enum ieee80211_sta_state state; 1724 1725 if (!sta->uploaded || sta->sdata != sdata) 1726 continue; 1727 1728 for (state = IEEE80211_STA_NOTEXIST; 1729 state < sta->sta_state; state++) 1730 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1731 state + 1)); 1732 } 1733 } 1734 1735 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1736 { 1737 struct cfg80211_nan_func *func, **funcs; 1738 int res, id, i = 0; 1739 1740 res = drv_start_nan(sdata->local, sdata, 1741 &sdata->u.nan.conf); 1742 if (WARN_ON(res)) 1743 return res; 1744 1745 funcs = kzalloc_objs(*funcs, sdata->local->hw.max_nan_de_entries + 1); 1746 if (!funcs) 1747 return -ENOMEM; 1748 1749 /* Add all the functions: 1750 * This is a little bit ugly. We need to call a potentially sleeping 1751 * callback for each NAN function, so we can't hold the spinlock. 1752 */ 1753 spin_lock_bh(&sdata->u.nan.func_lock); 1754 1755 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1756 funcs[i++] = func; 1757 1758 spin_unlock_bh(&sdata->u.nan.func_lock); 1759 1760 for (i = 0; funcs[i]; i++) { 1761 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1762 if (WARN_ON(res)) 1763 ieee80211_nan_func_terminated(&sdata->vif, 1764 funcs[i]->instance_id, 1765 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1766 GFP_KERNEL); 1767 } 1768 1769 kfree(funcs); 1770 1771 return 0; 1772 } 1773 1774 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1775 struct ieee80211_sub_if_data *sdata, 1776 u64 changed) 1777 { 1778 int link_id; 1779 1780 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1781 struct ieee80211_link_data *link; 1782 1783 if (!(sdata->vif.active_links & BIT(link_id))) 1784 continue; 1785 1786 link = sdata_dereference(sdata->link[link_id], sdata); 1787 if (!link) 1788 continue; 1789 1790 if (rcu_access_pointer(link->u.ap.beacon)) 1791 drv_start_ap(local, sdata, link->conf); 1792 1793 if (!link->conf->enable_beacon) 1794 continue; 1795 1796 changed |= BSS_CHANGED_BEACON | 1797 BSS_CHANGED_BEACON_ENABLED; 1798 1799 ieee80211_link_info_change_notify(sdata, link, changed); 1800 } 1801 } 1802 1803 int ieee80211_reconfig(struct ieee80211_local *local) 1804 { 1805 struct ieee80211_hw *hw = &local->hw; 1806 struct ieee80211_sub_if_data *sdata; 1807 struct ieee80211_chanctx *ctx; 1808 struct sta_info *sta; 1809 int res, i; 1810 bool reconfig_due_to_wowlan = false; 1811 struct ieee80211_sub_if_data *sched_scan_sdata; 1812 struct cfg80211_sched_scan_request *sched_scan_req; 1813 bool sched_scan_stopped = false; 1814 bool suspended = local->suspended; 1815 bool in_reconfig = false; 1816 1817 lockdep_assert_wiphy(local->hw.wiphy); 1818 1819 /* nothing to do if HW shouldn't run */ 1820 if (!local->open_count) 1821 goto wake_up; 1822 1823 #ifdef CONFIG_PM 1824 if (suspended) 1825 local->resuming = true; 1826 1827 if (local->wowlan) { 1828 /* 1829 * In the wowlan case, both mac80211 and the device 1830 * are functional when the resume op is called, so 1831 * clear local->suspended so the device could operate 1832 * normally (e.g. pass rx frames). 1833 */ 1834 local->suspended = false; 1835 res = drv_resume(local); 1836 local->wowlan = false; 1837 if (res < 0) { 1838 local->resuming = false; 1839 return res; 1840 } 1841 if (res == 0) 1842 goto wake_up; 1843 WARN_ON(res > 1); 1844 /* 1845 * res is 1, which means the driver requested 1846 * to go through a regular reset on wakeup. 1847 * restore local->suspended in this case. 1848 */ 1849 reconfig_due_to_wowlan = true; 1850 local->suspended = true; 1851 } 1852 #endif 1853 1854 /* 1855 * In case of hw_restart during suspend (without wowlan), 1856 * cancel restart work, as we are reconfiguring the device 1857 * anyway. 1858 * Note that restart_work is scheduled on a frozen workqueue, 1859 * so we can't deadlock in this case. 1860 */ 1861 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1862 cancel_work_sync(&local->restart_work); 1863 1864 local->started = false; 1865 1866 /* 1867 * Upon resume hardware can sometimes be goofy due to 1868 * various platform / driver / bus issues, so restarting 1869 * the device may at times not work immediately. Propagate 1870 * the error. 1871 */ 1872 res = drv_start(local); 1873 if (res) { 1874 if (suspended) 1875 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1876 else 1877 WARN(1, "Hardware became unavailable during restart.\n"); 1878 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 1879 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1880 false); 1881 ieee80211_handle_reconfig_failure(local); 1882 return res; 1883 } 1884 1885 /* setup fragmentation threshold */ 1886 drv_set_frag_threshold(local, -1, hw->wiphy->frag_threshold); 1887 1888 /* setup RTS threshold */ 1889 if (hw->wiphy->n_radio > 0) { 1890 for (i = 0; i < hw->wiphy->n_radio; i++) { 1891 u32 rts_threshold = 1892 hw->wiphy->radio_cfg[i].rts_threshold; 1893 1894 drv_set_rts_threshold(local, i, rts_threshold); 1895 } 1896 } else { 1897 drv_set_rts_threshold(local, -1, hw->wiphy->rts_threshold); 1898 } 1899 1900 /* reset coverage class */ 1901 drv_set_coverage_class(local, -1, hw->wiphy->coverage_class); 1902 1903 ieee80211_led_radio(local, true); 1904 ieee80211_mod_tpt_led_trig(local, 1905 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1906 1907 /* add interfaces */ 1908 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1909 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { 1910 /* in HW restart it exists already */ 1911 WARN_ON(local->resuming); 1912 res = drv_add_interface(local, sdata); 1913 if (WARN_ON(res)) { 1914 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1915 synchronize_net(); 1916 kfree(sdata); 1917 } 1918 } 1919 1920 list_for_each_entry(sdata, &local->interfaces, list) { 1921 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1922 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1923 continue; 1924 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1925 ieee80211_sdata_running(sdata)) { 1926 res = drv_add_interface(local, sdata); 1927 if (WARN_ON(res)) 1928 break; 1929 } 1930 } 1931 1932 /* If adding any of the interfaces failed above, roll back and 1933 * report failure. 1934 */ 1935 if (res) { 1936 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1937 list) { 1938 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1939 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1940 continue; 1941 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1942 ieee80211_sdata_running(sdata)) 1943 drv_remove_interface(local, sdata); 1944 } 1945 ieee80211_handle_reconfig_failure(local); 1946 return res; 1947 } 1948 1949 /* add channel contexts */ 1950 list_for_each_entry(ctx, &local->chanctx_list, list) 1951 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 1952 WARN_ON(drv_add_chanctx(local, ctx)); 1953 1954 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1955 if (sdata && ieee80211_sdata_running(sdata)) 1956 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 1957 1958 /* reconfigure hardware */ 1959 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 1960 IEEE80211_CONF_CHANGE_MONITOR | 1961 IEEE80211_CONF_CHANGE_PS | 1962 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 1963 IEEE80211_CONF_CHANGE_IDLE); 1964 1965 ieee80211_configure_filter(local); 1966 1967 /* Finally also reconfigure all the BSS information */ 1968 list_for_each_entry(sdata, &local->interfaces, list) { 1969 /* common change flags for all interface types - link only */ 1970 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 1971 BSS_CHANGED_ERP_PREAMBLE | 1972 BSS_CHANGED_ERP_SLOT | 1973 BSS_CHANGED_HT | 1974 BSS_CHANGED_BASIC_RATES | 1975 BSS_CHANGED_BEACON_INT | 1976 BSS_CHANGED_BSSID | 1977 BSS_CHANGED_CQM | 1978 BSS_CHANGED_QOS | 1979 BSS_CHANGED_TXPOWER | 1980 BSS_CHANGED_MCAST_RATE; 1981 struct ieee80211_link_data *link = NULL; 1982 unsigned int link_id; 1983 u32 active_links = 0; 1984 1985 if (!ieee80211_sdata_running(sdata)) 1986 continue; 1987 1988 if (ieee80211_vif_is_mld(&sdata->vif)) { 1989 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 1990 [0] = &sdata->vif.bss_conf, 1991 }; 1992 1993 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 1994 /* start with a single active link */ 1995 active_links = sdata->vif.active_links; 1996 link_id = ffs(active_links) - 1; 1997 sdata->vif.active_links = BIT(link_id); 1998 } 1999 2000 drv_change_vif_links(local, sdata, 0, 2001 sdata->vif.active_links, 2002 old); 2003 } 2004 2005 sdata->restart_active_links = active_links; 2006 2007 for (link_id = 0; 2008 link_id < ARRAY_SIZE(sdata->vif.link_conf); 2009 link_id++) { 2010 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 2011 continue; 2012 2013 link = sdata_dereference(sdata->link[link_id], sdata); 2014 if (!link) 2015 continue; 2016 2017 ieee80211_assign_chanctx(local, sdata, link); 2018 } 2019 2020 switch (sdata->vif.type) { 2021 case NL80211_IFTYPE_AP_VLAN: 2022 case NL80211_IFTYPE_MONITOR: 2023 break; 2024 case NL80211_IFTYPE_ADHOC: 2025 if (sdata->vif.cfg.ibss_joined) 2026 WARN_ON(drv_join_ibss(local, sdata)); 2027 fallthrough; 2028 default: 2029 ieee80211_reconfig_stations(sdata); 2030 fallthrough; 2031 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2032 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2033 drv_conf_tx(local, &sdata->deflink, i, 2034 &sdata->deflink.tx_conf[i]); 2035 break; 2036 } 2037 2038 if (sdata->vif.bss_conf.mu_mimo_owner) 2039 changed |= BSS_CHANGED_MU_GROUPS; 2040 2041 if (!ieee80211_vif_is_mld(&sdata->vif)) 2042 changed |= BSS_CHANGED_IDLE; 2043 2044 switch (sdata->vif.type) { 2045 case NL80211_IFTYPE_STATION: 2046 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2047 changed |= BSS_CHANGED_ASSOC | 2048 BSS_CHANGED_ARP_FILTER | 2049 BSS_CHANGED_PS; 2050 2051 /* Re-send beacon info report to the driver */ 2052 if (sdata->deflink.u.mgd.have_beacon) 2053 changed |= BSS_CHANGED_BEACON_INFO; 2054 2055 if (sdata->vif.bss_conf.max_idle_period || 2056 sdata->vif.bss_conf.protected_keep_alive) 2057 changed |= BSS_CHANGED_KEEP_ALIVE; 2058 2059 ieee80211_bss_info_change_notify(sdata, 2060 changed); 2061 } else if (!WARN_ON(!link)) { 2062 ieee80211_link_info_change_notify(sdata, link, 2063 changed); 2064 changed = BSS_CHANGED_ASSOC | 2065 BSS_CHANGED_IDLE | 2066 BSS_CHANGED_PS | 2067 BSS_CHANGED_ARP_FILTER; 2068 ieee80211_vif_cfg_change_notify(sdata, changed); 2069 } 2070 break; 2071 case NL80211_IFTYPE_OCB: 2072 changed |= BSS_CHANGED_OCB; 2073 ieee80211_bss_info_change_notify(sdata, changed); 2074 break; 2075 case NL80211_IFTYPE_ADHOC: 2076 changed |= BSS_CHANGED_IBSS; 2077 fallthrough; 2078 case NL80211_IFTYPE_AP: 2079 changed |= BSS_CHANGED_P2P_PS; 2080 2081 if (ieee80211_vif_is_mld(&sdata->vif)) 2082 ieee80211_vif_cfg_change_notify(sdata, 2083 BSS_CHANGED_SSID); 2084 else 2085 changed |= BSS_CHANGED_SSID; 2086 2087 if (sdata->vif.bss_conf.ftm_responder == 1 && 2088 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2089 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2090 changed |= BSS_CHANGED_FTM_RESPONDER; 2091 2092 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2093 changed |= BSS_CHANGED_AP_PROBE_RESP; 2094 2095 if (ieee80211_vif_is_mld(&sdata->vif)) { 2096 ieee80211_reconfig_ap_links(local, 2097 sdata, 2098 changed); 2099 break; 2100 } 2101 2102 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2103 drv_start_ap(local, sdata, 2104 sdata->deflink.conf); 2105 } 2106 fallthrough; 2107 case NL80211_IFTYPE_MESH_POINT: 2108 if (sdata->vif.bss_conf.enable_beacon) { 2109 changed |= BSS_CHANGED_BEACON | 2110 BSS_CHANGED_BEACON_ENABLED; 2111 ieee80211_bss_info_change_notify(sdata, changed); 2112 } 2113 break; 2114 case NL80211_IFTYPE_NAN: 2115 res = ieee80211_reconfig_nan(sdata); 2116 if (res < 0) { 2117 ieee80211_handle_reconfig_failure(local); 2118 return res; 2119 } 2120 break; 2121 case NL80211_IFTYPE_AP_VLAN: 2122 case NL80211_IFTYPE_MONITOR: 2123 case NL80211_IFTYPE_P2P_DEVICE: 2124 /* nothing to do */ 2125 break; 2126 case NL80211_IFTYPE_UNSPECIFIED: 2127 case NUM_NL80211_IFTYPES: 2128 case NL80211_IFTYPE_P2P_CLIENT: 2129 case NL80211_IFTYPE_P2P_GO: 2130 case NL80211_IFTYPE_WDS: 2131 WARN_ON(1); 2132 break; 2133 } 2134 } 2135 2136 ieee80211_recalc_ps(local); 2137 2138 /* 2139 * The sta might be in psm against the ap (e.g. because 2140 * this was the state before a hw restart), so we 2141 * explicitly send a null packet in order to make sure 2142 * it'll sync against the ap (and get out of psm). 2143 */ 2144 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2145 list_for_each_entry(sdata, &local->interfaces, list) { 2146 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2147 continue; 2148 if (!sdata->u.mgd.associated) 2149 continue; 2150 2151 ieee80211_send_nullfunc(local, sdata, false); 2152 } 2153 } 2154 2155 /* APs are now beaconing, add back stations */ 2156 list_for_each_entry(sdata, &local->interfaces, list) { 2157 if (!ieee80211_sdata_running(sdata)) 2158 continue; 2159 2160 switch (sdata->vif.type) { 2161 case NL80211_IFTYPE_AP_VLAN: 2162 case NL80211_IFTYPE_AP: 2163 ieee80211_reconfig_stations(sdata); 2164 break; 2165 default: 2166 break; 2167 } 2168 } 2169 2170 /* add back keys */ 2171 list_for_each_entry(sdata, &local->interfaces, list) 2172 ieee80211_reenable_keys(sdata); 2173 2174 /* re-enable multi-link for client interfaces */ 2175 list_for_each_entry(sdata, &local->interfaces, list) { 2176 if (sdata->restart_active_links) 2177 ieee80211_set_active_links(&sdata->vif, 2178 sdata->restart_active_links); 2179 /* 2180 * If a link switch was scheduled before the restart, and ran 2181 * before reconfig, it will do nothing, so re-schedule. 2182 */ 2183 if (sdata->desired_active_links) 2184 wiphy_work_queue(sdata->local->hw.wiphy, 2185 &sdata->activate_links_work); 2186 } 2187 2188 /* Reconfigure sched scan if it was interrupted by FW restart */ 2189 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2190 lockdep_is_held(&local->hw.wiphy->mtx)); 2191 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2192 lockdep_is_held(&local->hw.wiphy->mtx)); 2193 if (sched_scan_sdata && sched_scan_req) 2194 /* 2195 * Sched scan stopped, but we don't want to report it. Instead, 2196 * we're trying to reschedule. However, if more than one scan 2197 * plan was set, we cannot reschedule since we don't know which 2198 * scan plan was currently running (and some scan plans may have 2199 * already finished). 2200 */ 2201 if (sched_scan_req->n_scan_plans > 1 || 2202 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2203 sched_scan_req)) { 2204 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2205 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2206 sched_scan_stopped = true; 2207 } 2208 2209 if (sched_scan_stopped) 2210 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2211 2212 wake_up: 2213 /* 2214 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2215 * sessions can be established after a resume. 2216 * 2217 * Also tear down aggregation sessions since reconfiguring 2218 * them in a hardware restart scenario is not easily done 2219 * right now, and the hardware will have lost information 2220 * about the sessions, but we and the AP still think they 2221 * are active. This is really a workaround though. 2222 */ 2223 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2224 list_for_each_entry(sta, &local->sta_list, list) { 2225 if (!local->resuming) 2226 ieee80211_sta_tear_down_BA_sessions( 2227 sta, AGG_STOP_LOCAL_REQUEST); 2228 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2229 } 2230 } 2231 2232 /* 2233 * If this is for hw restart things are still running. 2234 * We may want to change that later, however. 2235 */ 2236 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2237 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2238 2239 if (local->in_reconfig) { 2240 in_reconfig = local->in_reconfig; 2241 local->in_reconfig = false; 2242 barrier(); 2243 2244 ieee80211_reconfig_roc(local); 2245 2246 /* Requeue all works */ 2247 list_for_each_entry(sdata, &local->interfaces, list) { 2248 if (ieee80211_sdata_running(sdata)) 2249 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2250 } 2251 } 2252 2253 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2254 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2255 false); 2256 2257 if (in_reconfig) { 2258 list_for_each_entry(sdata, &local->interfaces, list) { 2259 if (!ieee80211_sdata_running(sdata)) 2260 continue; 2261 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2262 ieee80211_sta_restart(sdata); 2263 } 2264 } 2265 2266 /* Passing NULL means an interface is picked for configuration */ 2267 if (local->virt_monitors > 0 && 2268 local->virt_monitors == local->open_count) 2269 ieee80211_add_virtual_monitor(local, NULL); 2270 2271 if (!suspended) 2272 return 0; 2273 2274 #ifdef CONFIG_PM 2275 /* first set suspended false, then resuming */ 2276 local->suspended = false; 2277 mb(); 2278 local->resuming = false; 2279 2280 ieee80211_flush_completed_scan(local, false); 2281 2282 if (local->open_count && !reconfig_due_to_wowlan) 2283 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2284 2285 list_for_each_entry(sdata, &local->interfaces, list) { 2286 if (!ieee80211_sdata_running(sdata)) 2287 continue; 2288 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2289 ieee80211_sta_restart(sdata); 2290 } 2291 2292 mod_timer(&local->sta_cleanup, jiffies + 1); 2293 #else 2294 WARN_ON(1); 2295 #endif 2296 2297 return 0; 2298 } 2299 2300 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2301 { 2302 struct ieee80211_sub_if_data *sdata; 2303 struct ieee80211_local *local; 2304 struct ieee80211_key *key; 2305 2306 if (WARN_ON(!vif)) 2307 return; 2308 2309 sdata = vif_to_sdata(vif); 2310 local = sdata->local; 2311 2312 lockdep_assert_wiphy(local->hw.wiphy); 2313 2314 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2315 !local->resuming)) 2316 return; 2317 2318 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2319 !local->in_reconfig)) 2320 return; 2321 2322 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2323 return; 2324 2325 sdata->flags |= flag; 2326 2327 list_for_each_entry(key, &sdata->key_list, list) 2328 key->flags |= KEY_FLAG_TAINTED; 2329 } 2330 2331 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2332 { 2333 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2334 } 2335 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2336 2337 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2338 { 2339 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2340 } 2341 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2342 2343 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2344 struct ieee80211_link_data *link) 2345 { 2346 struct ieee80211_local *local = sdata->local; 2347 struct ieee80211_chanctx_conf *chanctx_conf; 2348 struct ieee80211_chanctx *chanctx; 2349 2350 lockdep_assert_wiphy(local->hw.wiphy); 2351 2352 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2353 lockdep_is_held(&local->hw.wiphy->mtx)); 2354 2355 /* 2356 * This function can be called from a work, thus it may be possible 2357 * that the chanctx_conf is removed (due to a disconnection, for 2358 * example). 2359 * So nothing should be done in such case. 2360 */ 2361 if (!chanctx_conf) 2362 return; 2363 2364 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2365 ieee80211_recalc_smps_chanctx(local, chanctx); 2366 } 2367 2368 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2369 int link_id) 2370 { 2371 struct ieee80211_local *local = sdata->local; 2372 struct ieee80211_chanctx_conf *chanctx_conf; 2373 struct ieee80211_chanctx *chanctx; 2374 int i; 2375 2376 lockdep_assert_wiphy(local->hw.wiphy); 2377 2378 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2379 struct ieee80211_bss_conf *bss_conf; 2380 2381 if (link_id >= 0 && link_id != i) 2382 continue; 2383 2384 rcu_read_lock(); 2385 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2386 if (!bss_conf) { 2387 rcu_read_unlock(); 2388 continue; 2389 } 2390 2391 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2392 lockdep_is_held(&local->hw.wiphy->mtx)); 2393 /* 2394 * Since we hold the wiphy mutex (checked above) 2395 * we can take the chanctx_conf pointer out of the 2396 * RCU critical section, it cannot go away without 2397 * the mutex. Just the way we reached it could - in 2398 * theory - go away, but we don't really care and 2399 * it really shouldn't happen anyway. 2400 */ 2401 rcu_read_unlock(); 2402 2403 if (!chanctx_conf) 2404 return; 2405 2406 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2407 conf); 2408 ieee80211_recalc_chanctx_min_def(local, chanctx); 2409 } 2410 } 2411 2412 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2413 { 2414 size_t pos = offset; 2415 2416 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2417 pos += 2 + ies[pos + 1]; 2418 2419 return pos; 2420 } 2421 2422 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2423 u16 cap) 2424 { 2425 __le16 tmp; 2426 2427 *pos++ = WLAN_EID_HT_CAPABILITY; 2428 *pos++ = sizeof(struct ieee80211_ht_cap); 2429 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2430 2431 /* capability flags */ 2432 tmp = cpu_to_le16(cap); 2433 memcpy(pos, &tmp, sizeof(u16)); 2434 pos += sizeof(u16); 2435 2436 /* AMPDU parameters */ 2437 *pos++ = ht_cap->ampdu_factor | 2438 (ht_cap->ampdu_density << 2439 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2440 2441 /* MCS set */ 2442 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2443 pos += sizeof(ht_cap->mcs); 2444 2445 /* extended capabilities */ 2446 pos += sizeof(__le16); 2447 2448 /* BF capabilities */ 2449 pos += sizeof(__le32); 2450 2451 /* antenna selection */ 2452 pos += sizeof(u8); 2453 2454 return pos; 2455 } 2456 2457 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2458 u32 cap) 2459 { 2460 __le32 tmp; 2461 2462 *pos++ = WLAN_EID_VHT_CAPABILITY; 2463 *pos++ = sizeof(struct ieee80211_vht_cap); 2464 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2465 2466 /* capability flags */ 2467 tmp = cpu_to_le32(cap); 2468 memcpy(pos, &tmp, sizeof(u32)); 2469 pos += sizeof(u32); 2470 2471 /* VHT MCS set */ 2472 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2473 pos += sizeof(vht_cap->vht_mcs); 2474 2475 return pos; 2476 } 2477 2478 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2479 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2480 { 2481 const struct ieee80211_sta_he_cap *he_cap; 2482 struct ieee80211_supported_band *sband; 2483 u8 n; 2484 2485 sband = ieee80211_get_sband(sdata); 2486 if (!sband) 2487 return 0; 2488 2489 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2490 if (!he_cap) 2491 return 0; 2492 2493 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2494 return 2 + 1 + 2495 sizeof(he_cap->he_cap_elem) + n + 2496 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2497 he_cap->he_cap_elem.phy_cap_info); 2498 } 2499 2500 static void 2501 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2502 const struct ieee80211_sta_he_cap *he_cap, 2503 struct ieee80211_he_cap_elem *elem) 2504 { 2505 u8 ru_limit, max_ru; 2506 2507 *elem = he_cap->he_cap_elem; 2508 2509 switch (conn->bw_limit) { 2510 case IEEE80211_CONN_BW_LIMIT_20: 2511 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2512 break; 2513 case IEEE80211_CONN_BW_LIMIT_40: 2514 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2515 break; 2516 case IEEE80211_CONN_BW_LIMIT_80: 2517 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2518 break; 2519 default: 2520 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2521 break; 2522 } 2523 2524 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2525 max_ru = min(max_ru, ru_limit); 2526 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2527 elem->phy_cap_info[8] |= max_ru; 2528 2529 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2530 elem->phy_cap_info[0] &= 2531 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2532 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2533 elem->phy_cap_info[9] &= 2534 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2535 } 2536 2537 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2538 elem->phy_cap_info[0] &= 2539 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2540 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2541 elem->phy_cap_info[5] &= 2542 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2543 elem->phy_cap_info[7] &= 2544 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2545 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2546 } 2547 } 2548 2549 int ieee80211_put_he_cap(struct sk_buff *skb, 2550 struct ieee80211_sub_if_data *sdata, 2551 const struct ieee80211_supported_band *sband, 2552 const struct ieee80211_conn_settings *conn) 2553 { 2554 const struct ieee80211_sta_he_cap *he_cap; 2555 struct ieee80211_he_cap_elem elem; 2556 u8 *len; 2557 u8 n; 2558 u8 ie_len; 2559 2560 if (!conn) 2561 conn = &ieee80211_conn_settings_unlimited; 2562 2563 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2564 if (!he_cap) 2565 return 0; 2566 2567 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2568 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2569 2570 n = ieee80211_he_mcs_nss_size(&elem); 2571 ie_len = 2 + 1 + 2572 sizeof(he_cap->he_cap_elem) + n + 2573 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2574 he_cap->he_cap_elem.phy_cap_info); 2575 2576 if (skb_tailroom(skb) < ie_len) 2577 return -ENOBUFS; 2578 2579 skb_put_u8(skb, WLAN_EID_EXTENSION); 2580 len = skb_put(skb, 1); /* We'll set the size later below */ 2581 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2582 2583 /* Fixed data */ 2584 skb_put_data(skb, &elem, sizeof(elem)); 2585 2586 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2587 2588 /* Check if PPE Threshold should be present */ 2589 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2590 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2591 goto end; 2592 2593 /* 2594 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2595 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2596 */ 2597 n = hweight8(he_cap->ppe_thres[0] & 2598 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2599 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2600 IEEE80211_PPE_THRES_NSS_POS)); 2601 2602 /* 2603 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2604 * total size. 2605 */ 2606 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2607 n = DIV_ROUND_UP(n, 8); 2608 2609 /* Copy PPE Thresholds */ 2610 skb_put_data(skb, &he_cap->ppe_thres, n); 2611 2612 end: 2613 *len = skb_tail_pointer(skb) - len - 1; 2614 return 0; 2615 } 2616 2617 int ieee80211_put_reg_conn(struct sk_buff *skb, 2618 enum ieee80211_channel_flags flags) 2619 { 2620 u8 reg_conn = IEEE80211_REG_CONN_LPI_VALID | 2621 IEEE80211_REG_CONN_LPI_VALUE | 2622 IEEE80211_REG_CONN_SP_VALID; 2623 2624 if (!(flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT)) 2625 reg_conn |= IEEE80211_REG_CONN_SP_VALUE; 2626 2627 skb_put_u8(skb, WLAN_EID_EXTENSION); 2628 skb_put_u8(skb, 1 + sizeof(reg_conn)); 2629 skb_put_u8(skb, WLAN_EID_EXT_NON_AP_STA_REG_CON); 2630 skb_put_u8(skb, reg_conn); 2631 return 0; 2632 } 2633 2634 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2635 struct ieee80211_sub_if_data *sdata, 2636 enum ieee80211_smps_mode smps_mode) 2637 { 2638 struct ieee80211_supported_band *sband; 2639 const struct ieee80211_sband_iftype_data *iftd; 2640 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2641 __le16 cap; 2642 2643 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2644 BIT(NL80211_BAND_6GHZ), 2645 IEEE80211_CHAN_NO_HE)) 2646 return 0; 2647 2648 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2649 2650 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2651 if (!iftd) 2652 return 0; 2653 2654 /* Check for device HE 6 GHz capability before adding element */ 2655 if (!iftd->he_6ghz_capa.capa) 2656 return 0; 2657 2658 cap = iftd->he_6ghz_capa.capa; 2659 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2660 2661 switch (smps_mode) { 2662 case IEEE80211_SMPS_AUTOMATIC: 2663 case IEEE80211_SMPS_NUM_MODES: 2664 WARN_ON(1); 2665 fallthrough; 2666 case IEEE80211_SMPS_OFF: 2667 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2668 IEEE80211_HE_6GHZ_CAP_SM_PS); 2669 break; 2670 case IEEE80211_SMPS_STATIC: 2671 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2672 IEEE80211_HE_6GHZ_CAP_SM_PS); 2673 break; 2674 case IEEE80211_SMPS_DYNAMIC: 2675 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2676 IEEE80211_HE_6GHZ_CAP_SM_PS); 2677 break; 2678 } 2679 2680 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2681 return -ENOBUFS; 2682 2683 skb_put_u8(skb, WLAN_EID_EXTENSION); 2684 skb_put_u8(skb, 1 + sizeof(cap)); 2685 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2686 skb_put_data(skb, &cap, sizeof(cap)); 2687 return 0; 2688 } 2689 2690 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2691 const struct cfg80211_chan_def *chandef, 2692 u16 prot_mode, bool rifs_mode) 2693 { 2694 struct ieee80211_ht_operation *ht_oper; 2695 /* Build HT Information */ 2696 *pos++ = WLAN_EID_HT_OPERATION; 2697 *pos++ = sizeof(struct ieee80211_ht_operation); 2698 ht_oper = (struct ieee80211_ht_operation *)pos; 2699 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2700 chandef->chan->center_freq); 2701 switch (chandef->width) { 2702 case NL80211_CHAN_WIDTH_160: 2703 case NL80211_CHAN_WIDTH_80P80: 2704 case NL80211_CHAN_WIDTH_80: 2705 case NL80211_CHAN_WIDTH_40: 2706 if (chandef->center_freq1 > chandef->chan->center_freq) 2707 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2708 else 2709 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2710 break; 2711 case NL80211_CHAN_WIDTH_320: 2712 /* HT information element should not be included on 6GHz */ 2713 WARN_ON(1); 2714 return pos; 2715 default: 2716 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2717 break; 2718 } 2719 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2720 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2721 chandef->width != NL80211_CHAN_WIDTH_20) 2722 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2723 2724 if (rifs_mode) 2725 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2726 2727 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2728 ht_oper->stbc_param = 0x0000; 2729 2730 /* It seems that Basic MCS set and Supported MCS set 2731 are identical for the first 10 bytes */ 2732 memset(&ht_oper->basic_set, 0, 16); 2733 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2734 2735 return pos + sizeof(struct ieee80211_ht_operation); 2736 } 2737 2738 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2739 const struct cfg80211_chan_def *chandef) 2740 { 2741 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2742 *pos++ = 3; /* IE length */ 2743 /* New channel width */ 2744 switch (chandef->width) { 2745 case NL80211_CHAN_WIDTH_80: 2746 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2747 break; 2748 case NL80211_CHAN_WIDTH_160: 2749 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2750 break; 2751 case NL80211_CHAN_WIDTH_80P80: 2752 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2753 break; 2754 case NL80211_CHAN_WIDTH_320: 2755 /* The behavior is not defined for 320 MHz channels */ 2756 WARN_ON(1); 2757 fallthrough; 2758 default: 2759 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2760 } 2761 2762 /* new center frequency segment 0 */ 2763 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2764 /* new center frequency segment 1 */ 2765 if (chandef->center_freq2) 2766 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2767 else 2768 *pos++ = 0; 2769 } 2770 2771 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2772 const struct cfg80211_chan_def *chandef) 2773 { 2774 struct ieee80211_vht_operation *vht_oper; 2775 2776 *pos++ = WLAN_EID_VHT_OPERATION; 2777 *pos++ = sizeof(struct ieee80211_vht_operation); 2778 vht_oper = (struct ieee80211_vht_operation *)pos; 2779 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2780 chandef->center_freq1); 2781 if (chandef->center_freq2) 2782 vht_oper->center_freq_seg1_idx = 2783 ieee80211_frequency_to_channel(chandef->center_freq2); 2784 else 2785 vht_oper->center_freq_seg1_idx = 0x00; 2786 2787 switch (chandef->width) { 2788 case NL80211_CHAN_WIDTH_160: 2789 /* 2790 * Convert 160 MHz channel width to new style as interop 2791 * workaround. 2792 */ 2793 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2794 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2795 if (chandef->chan->center_freq < chandef->center_freq1) 2796 vht_oper->center_freq_seg0_idx -= 8; 2797 else 2798 vht_oper->center_freq_seg0_idx += 8; 2799 break; 2800 case NL80211_CHAN_WIDTH_80P80: 2801 /* 2802 * Convert 80+80 MHz channel width to new style as interop 2803 * workaround. 2804 */ 2805 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2806 break; 2807 case NL80211_CHAN_WIDTH_80: 2808 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2809 break; 2810 case NL80211_CHAN_WIDTH_320: 2811 /* VHT information element should not be included on 6GHz */ 2812 WARN_ON(1); 2813 return pos; 2814 default: 2815 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2816 break; 2817 } 2818 2819 /* don't require special VHT peer rates */ 2820 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2821 2822 return pos + sizeof(struct ieee80211_vht_operation); 2823 } 2824 2825 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef) 2826 { 2827 struct ieee80211_he_operation *he_oper; 2828 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2829 struct cfg80211_chan_def he_chandef; 2830 u32 he_oper_params; 2831 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2832 2833 if (chandef->chan->band == NL80211_BAND_6GHZ) 2834 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2835 2836 *pos++ = WLAN_EID_EXTENSION; 2837 *pos++ = ie_len; 2838 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2839 2840 he_oper_params = 0; 2841 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2842 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2843 he_oper_params |= u32_encode_bits(1, 2844 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2845 he_oper_params |= u32_encode_bits(1, 2846 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2847 if (chandef->chan->band == NL80211_BAND_6GHZ) 2848 he_oper_params |= u32_encode_bits(1, 2849 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2850 2851 he_oper = (struct ieee80211_he_operation *)pos; 2852 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2853 2854 /* don't require special HE peer rates */ 2855 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2856 pos += sizeof(struct ieee80211_he_operation); 2857 2858 if (chandef->chan->band != NL80211_BAND_6GHZ) 2859 goto out; 2860 2861 cfg80211_chandef_create(&he_chandef, chandef->chan, NL80211_CHAN_NO_HT); 2862 he_chandef.center_freq1 = chandef->center_freq1; 2863 he_chandef.center_freq2 = chandef->center_freq2; 2864 he_chandef.width = chandef->width; 2865 2866 /* TODO add VHT operational */ 2867 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2868 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2869 he_6ghz_op->primary = 2870 ieee80211_frequency_to_channel(he_chandef.chan->center_freq); 2871 he_6ghz_op->ccfs0 = 2872 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2873 if (he_chandef.center_freq2) 2874 he_6ghz_op->ccfs1 = 2875 ieee80211_frequency_to_channel(he_chandef.center_freq2); 2876 else 2877 he_6ghz_op->ccfs1 = 0; 2878 2879 switch (he_chandef.width) { 2880 case NL80211_CHAN_WIDTH_320: 2881 /* Downgrade EHT 320 MHz BW to 160 MHz for HE and set new 2882 * center_freq1 2883 */ 2884 ieee80211_chandef_downgrade(&he_chandef, NULL); 2885 he_6ghz_op->ccfs0 = 2886 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2887 fallthrough; 2888 case NL80211_CHAN_WIDTH_160: 2889 /* Convert 160 MHz channel width to new style as interop 2890 * workaround. 2891 */ 2892 he_6ghz_op->control = 2893 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2894 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 2895 if (he_chandef.chan->center_freq < he_chandef.center_freq1) 2896 he_6ghz_op->ccfs0 -= 8; 2897 else 2898 he_6ghz_op->ccfs0 += 8; 2899 fallthrough; 2900 case NL80211_CHAN_WIDTH_80P80: 2901 he_6ghz_op->control = 2902 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2903 break; 2904 case NL80211_CHAN_WIDTH_80: 2905 he_6ghz_op->control = 2906 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 2907 break; 2908 case NL80211_CHAN_WIDTH_40: 2909 he_6ghz_op->control = 2910 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 2911 break; 2912 default: 2913 he_6ghz_op->control = 2914 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 2915 break; 2916 } 2917 2918 pos += sizeof(struct ieee80211_he_6ghz_oper); 2919 2920 out: 2921 return pos; 2922 } 2923 2924 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef, 2925 const struct ieee80211_sta_eht_cap *eht_cap) 2926 2927 { 2928 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 2929 &eht_cap->eht_mcs_nss_supp.only_20mhz; 2930 struct ieee80211_eht_operation *eht_oper; 2931 struct ieee80211_eht_operation_info *eht_oper_info; 2932 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 2933 u8 eht_oper_info_len = 2934 offsetof(struct ieee80211_eht_operation_info, optional); 2935 u8 chan_width = 0; 2936 2937 *pos++ = WLAN_EID_EXTENSION; 2938 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 2939 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 2940 2941 eht_oper = (struct ieee80211_eht_operation *)pos; 2942 2943 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 2944 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 2945 pos += eht_oper_len; 2946 2947 eht_oper_info = 2948 (struct ieee80211_eht_operation_info *)eht_oper->optional; 2949 2950 eht_oper_info->ccfs0 = 2951 ieee80211_frequency_to_channel(chandef->center_freq1); 2952 if (chandef->center_freq2) 2953 eht_oper_info->ccfs1 = 2954 ieee80211_frequency_to_channel(chandef->center_freq2); 2955 else 2956 eht_oper_info->ccfs1 = 0; 2957 2958 switch (chandef->width) { 2959 case NL80211_CHAN_WIDTH_320: 2960 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 2961 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2962 if (chandef->chan->center_freq < chandef->center_freq1) 2963 eht_oper_info->ccfs0 -= 16; 2964 else 2965 eht_oper_info->ccfs0 += 16; 2966 break; 2967 case NL80211_CHAN_WIDTH_160: 2968 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2969 if (chandef->chan->center_freq < chandef->center_freq1) 2970 eht_oper_info->ccfs0 -= 8; 2971 else 2972 eht_oper_info->ccfs0 += 8; 2973 fallthrough; 2974 case NL80211_CHAN_WIDTH_80P80: 2975 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 2976 break; 2977 case NL80211_CHAN_WIDTH_80: 2978 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 2979 break; 2980 case NL80211_CHAN_WIDTH_40: 2981 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 2982 break; 2983 default: 2984 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 2985 break; 2986 } 2987 eht_oper_info->control = chan_width; 2988 pos += eht_oper_info_len; 2989 2990 /* TODO: eht_oper_info->optional */ 2991 2992 return pos; 2993 } 2994 2995 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2996 struct cfg80211_chan_def *chandef) 2997 { 2998 enum nl80211_channel_type channel_type; 2999 3000 if (!ht_oper) 3001 return false; 3002 3003 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 3004 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 3005 channel_type = NL80211_CHAN_HT20; 3006 break; 3007 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 3008 channel_type = NL80211_CHAN_HT40PLUS; 3009 break; 3010 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 3011 channel_type = NL80211_CHAN_HT40MINUS; 3012 break; 3013 default: 3014 return false; 3015 } 3016 3017 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 3018 return true; 3019 } 3020 3021 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 3022 const struct ieee80211_vht_operation *oper, 3023 const struct ieee80211_ht_operation *htop, 3024 struct cfg80211_chan_def *chandef) 3025 { 3026 struct cfg80211_chan_def new = *chandef; 3027 int cf0, cf1; 3028 int ccfs0, ccfs1, ccfs2; 3029 int ccf0, ccf1; 3030 u32 vht_cap; 3031 bool support_80_80 = false; 3032 bool support_160 = false; 3033 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 3034 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 3035 u8 supp_chwidth = u32_get_bits(vht_cap_info, 3036 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3037 3038 if (!oper || !htop) 3039 return false; 3040 3041 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 3042 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 3043 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 3044 support_80_80 = ((vht_cap & 3045 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 3046 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 3047 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 3048 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 3049 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 3050 ccfs0 = oper->center_freq_seg0_idx; 3051 ccfs1 = oper->center_freq_seg1_idx; 3052 ccfs2 = (le16_to_cpu(htop->operation_mode) & 3053 IEEE80211_HT_OP_MODE_CCFS2_MASK) 3054 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 3055 3056 ccf0 = ccfs0; 3057 3058 /* if not supported, parse as though we didn't understand it */ 3059 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 3060 ext_nss_bw_supp = 0; 3061 3062 /* 3063 * Cf. IEEE 802.11 Table 9-250 3064 * 3065 * We really just consider that because it's inefficient to connect 3066 * at a higher bandwidth than we'll actually be able to use. 3067 */ 3068 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 3069 default: 3070 case 0x00: 3071 ccf1 = 0; 3072 support_160 = false; 3073 support_80_80 = false; 3074 break; 3075 case 0x01: 3076 support_80_80 = false; 3077 fallthrough; 3078 case 0x02: 3079 case 0x03: 3080 ccf1 = ccfs2; 3081 break; 3082 case 0x10: 3083 ccf1 = ccfs1; 3084 break; 3085 case 0x11: 3086 case 0x12: 3087 if (!ccfs1) 3088 ccf1 = ccfs2; 3089 else 3090 ccf1 = ccfs1; 3091 break; 3092 case 0x13: 3093 case 0x20: 3094 case 0x23: 3095 ccf1 = ccfs1; 3096 break; 3097 } 3098 3099 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3100 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3101 3102 switch (oper->chan_width) { 3103 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3104 /* just use HT information directly */ 3105 break; 3106 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3107 new.width = NL80211_CHAN_WIDTH_80; 3108 new.center_freq1 = cf0; 3109 /* If needed, adjust based on the newer interop workaround. */ 3110 if (ccf1) { 3111 unsigned int diff; 3112 3113 diff = abs(ccf1 - ccf0); 3114 if ((diff == 8) && support_160) { 3115 new.width = NL80211_CHAN_WIDTH_160; 3116 new.center_freq1 = cf1; 3117 } else if ((diff > 8) && support_80_80) { 3118 new.width = NL80211_CHAN_WIDTH_80P80; 3119 new.center_freq2 = cf1; 3120 } 3121 } 3122 break; 3123 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3124 /* deprecated encoding */ 3125 new.width = NL80211_CHAN_WIDTH_160; 3126 new.center_freq1 = cf0; 3127 break; 3128 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3129 /* deprecated encoding */ 3130 new.width = NL80211_CHAN_WIDTH_80P80; 3131 new.center_freq1 = cf0; 3132 new.center_freq2 = cf1; 3133 break; 3134 default: 3135 return false; 3136 } 3137 3138 if (!cfg80211_chandef_valid(&new)) 3139 return false; 3140 3141 *chandef = new; 3142 return true; 3143 } 3144 3145 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3146 struct cfg80211_chan_def *chandef) 3147 { 3148 chandef->center_freq1 = 3149 ieee80211_channel_to_frequency(info->ccfs0, 3150 chandef->chan->band); 3151 3152 switch (u8_get_bits(info->control, 3153 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3154 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3155 chandef->width = NL80211_CHAN_WIDTH_20; 3156 break; 3157 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3158 chandef->width = NL80211_CHAN_WIDTH_40; 3159 break; 3160 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3161 chandef->width = NL80211_CHAN_WIDTH_80; 3162 break; 3163 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3164 chandef->width = NL80211_CHAN_WIDTH_160; 3165 chandef->center_freq1 = 3166 ieee80211_channel_to_frequency(info->ccfs1, 3167 chandef->chan->band); 3168 break; 3169 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3170 chandef->width = NL80211_CHAN_WIDTH_320; 3171 chandef->center_freq1 = 3172 ieee80211_channel_to_frequency(info->ccfs1, 3173 chandef->chan->band); 3174 break; 3175 } 3176 } 3177 3178 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3179 const struct ieee80211_he_operation *he_oper, 3180 const struct ieee80211_eht_operation *eht_oper, 3181 struct cfg80211_chan_def *chandef) 3182 { 3183 struct cfg80211_chan_def he_chandef = *chandef; 3184 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3185 u32 freq; 3186 3187 if (chandef->chan->band != NL80211_BAND_6GHZ) 3188 return true; 3189 3190 if (!he_oper) 3191 return false; 3192 3193 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3194 if (!he_6ghz_oper) 3195 return false; 3196 3197 /* 3198 * The EHT operation IE does not contain the primary channel so the 3199 * primary channel frequency should be taken from the 6 GHz operation 3200 * information. 3201 */ 3202 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3203 NL80211_BAND_6GHZ); 3204 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3205 3206 if (!he_chandef.chan) 3207 return false; 3208 3209 if (!eht_oper || 3210 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3211 switch (u8_get_bits(he_6ghz_oper->control, 3212 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3213 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3214 he_chandef.width = NL80211_CHAN_WIDTH_20; 3215 break; 3216 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3217 he_chandef.width = NL80211_CHAN_WIDTH_40; 3218 break; 3219 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3220 he_chandef.width = NL80211_CHAN_WIDTH_80; 3221 break; 3222 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3223 he_chandef.width = NL80211_CHAN_WIDTH_80; 3224 if (!he_6ghz_oper->ccfs1) 3225 break; 3226 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3227 he_chandef.width = NL80211_CHAN_WIDTH_160; 3228 else 3229 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3230 break; 3231 } 3232 3233 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3234 he_chandef.center_freq1 = 3235 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3236 NL80211_BAND_6GHZ); 3237 } else { 3238 he_chandef.center_freq1 = 3239 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3240 NL80211_BAND_6GHZ); 3241 he_chandef.center_freq2 = 3242 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3243 NL80211_BAND_6GHZ); 3244 } 3245 } else { 3246 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3247 &he_chandef); 3248 he_chandef.punctured = 3249 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 3250 } 3251 3252 if (!cfg80211_chandef_valid(&he_chandef)) 3253 return false; 3254 3255 *chandef = he_chandef; 3256 3257 return true; 3258 } 3259 3260 bool ieee80211_chandef_s1g_oper(struct ieee80211_local *local, 3261 const struct ieee80211_s1g_oper_ie *oper, 3262 struct cfg80211_chan_def *chandef) 3263 { 3264 u32 oper_khz, pri_1mhz_khz, pri_2mhz_khz; 3265 3266 if (!oper) 3267 return false; 3268 3269 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3270 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3271 chandef->width = NL80211_CHAN_WIDTH_1; 3272 break; 3273 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3274 chandef->width = NL80211_CHAN_WIDTH_2; 3275 break; 3276 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3277 chandef->width = NL80211_CHAN_WIDTH_4; 3278 break; 3279 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3280 chandef->width = NL80211_CHAN_WIDTH_8; 3281 break; 3282 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3283 chandef->width = NL80211_CHAN_WIDTH_16; 3284 break; 3285 default: 3286 return false; 3287 } 3288 3289 chandef->s1g_primary_2mhz = false; 3290 3291 switch (u8_get_bits(oper->ch_width, S1G_OPER_CH_WIDTH_PRIMARY)) { 3292 case IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 3293 pri_1mhz_khz = ieee80211_channel_to_freq_khz( 3294 oper->primary_ch, NL80211_BAND_S1GHZ); 3295 break; 3296 case IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 3297 chandef->s1g_primary_2mhz = true; 3298 pri_2mhz_khz = ieee80211_channel_to_freq_khz( 3299 oper->primary_ch, NL80211_BAND_S1GHZ); 3300 3301 if (u8_get_bits(oper->ch_width, S1G_OPER_CH_PRIMARY_LOCATION) == 3302 S1G_2M_PRIMARY_LOCATION_LOWER) 3303 pri_1mhz_khz = pri_2mhz_khz - 500; 3304 else 3305 pri_1mhz_khz = pri_2mhz_khz + 500; 3306 break; 3307 default: 3308 return false; 3309 } 3310 3311 oper_khz = ieee80211_channel_to_freq_khz(oper->oper_ch, 3312 NL80211_BAND_S1GHZ); 3313 chandef->center_freq1 = KHZ_TO_MHZ(oper_khz); 3314 chandef->freq1_offset = oper_khz % 1000; 3315 chandef->chan = 3316 ieee80211_get_channel_khz(local->hw.wiphy, pri_1mhz_khz); 3317 3318 return chandef->chan; 3319 } 3320 3321 int ieee80211_put_srates_elem(struct sk_buff *skb, 3322 const struct ieee80211_supported_band *sband, 3323 u32 basic_rates, u32 masked_rates, 3324 u8 element_id) 3325 { 3326 u8 i, rates, skip; 3327 3328 rates = 0; 3329 for (i = 0; i < sband->n_bitrates; i++) { 3330 if (masked_rates & BIT(i)) 3331 continue; 3332 rates++; 3333 } 3334 3335 if (element_id == WLAN_EID_SUPP_RATES) { 3336 rates = min_t(u8, rates, 8); 3337 skip = 0; 3338 } else { 3339 skip = 8; 3340 if (rates <= skip) 3341 return 0; 3342 rates -= skip; 3343 } 3344 3345 if (skb_tailroom(skb) < rates + 2) 3346 return -ENOBUFS; 3347 3348 skb_put_u8(skb, element_id); 3349 skb_put_u8(skb, rates); 3350 3351 for (i = 0; i < sband->n_bitrates && rates; i++) { 3352 int rate; 3353 u8 basic; 3354 3355 if (masked_rates & BIT(i)) 3356 continue; 3357 3358 if (skip > 0) { 3359 skip--; 3360 continue; 3361 } 3362 3363 basic = basic_rates & BIT(i) ? 0x80 : 0; 3364 3365 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3366 skb_put_u8(skb, basic | (u8)rate); 3367 rates--; 3368 } 3369 3370 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3371 rates, element_id); 3372 3373 return 0; 3374 } 3375 3376 int ieee80211_ave_rssi(struct ieee80211_vif *vif, int link_id) 3377 { 3378 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3379 struct ieee80211_link_data *link_data; 3380 3381 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3382 return 0; 3383 3384 if (link_id < 0) 3385 link_data = &sdata->deflink; 3386 else 3387 link_data = wiphy_dereference(sdata->local->hw.wiphy, 3388 sdata->link[link_id]); 3389 3390 if (WARN_ON_ONCE(!link_data)) 3391 return -99; 3392 3393 return -ewma_beacon_signal_read(&link_data->u.mgd.ave_beacon_signal); 3394 } 3395 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3396 3397 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3398 { 3399 if (!mcs) 3400 return 1; 3401 3402 /* TODO: consider rx_highest */ 3403 3404 if (mcs->rx_mask[3]) 3405 return 4; 3406 if (mcs->rx_mask[2]) 3407 return 3; 3408 if (mcs->rx_mask[1]) 3409 return 2; 3410 return 1; 3411 } 3412 3413 /** 3414 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 3415 * @local: mac80211 hw info struct 3416 * @status: RX status 3417 * @mpdu_len: total MPDU length (including FCS) 3418 * @mpdu_offset: offset into MPDU to calculate timestamp at 3419 * 3420 * This function calculates the RX timestamp at the given MPDU offset, taking 3421 * into account what the RX timestamp was. An offset of 0 will just normalize 3422 * the timestamp to TSF at beginning of MPDU reception. 3423 * 3424 * Returns: the calculated timestamp 3425 */ 3426 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3427 struct ieee80211_rx_status *status, 3428 unsigned int mpdu_len, 3429 unsigned int mpdu_offset) 3430 { 3431 u64 ts = status->mactime; 3432 bool mactime_plcp_start; 3433 struct rate_info ri; 3434 u16 rate; 3435 u8 n_ltf; 3436 3437 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3438 return 0; 3439 3440 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3441 RX_FLAG_MACTIME_PLCP_START; 3442 3443 memset(&ri, 0, sizeof(ri)); 3444 3445 ri.bw = status->bw; 3446 3447 /* Fill cfg80211 rate info */ 3448 switch (status->encoding) { 3449 case RX_ENC_EHT: 3450 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3451 ri.mcs = status->rate_idx; 3452 ri.nss = status->nss; 3453 ri.eht_ru_alloc = status->eht.ru; 3454 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3455 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3456 /* TODO/FIXME: is this right? handle other PPDUs */ 3457 if (mactime_plcp_start) { 3458 mpdu_offset += 2; 3459 ts += 36; 3460 } 3461 break; 3462 case RX_ENC_HE: 3463 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3464 ri.mcs = status->rate_idx; 3465 ri.nss = status->nss; 3466 ri.he_ru_alloc = status->he_ru; 3467 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3468 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3469 3470 /* 3471 * See P802.11ax_D6.0, section 27.3.4 for 3472 * VHT PPDU format. 3473 */ 3474 if (mactime_plcp_start) { 3475 mpdu_offset += 2; 3476 ts += 36; 3477 3478 /* 3479 * TODO: 3480 * For HE MU PPDU, add the HE-SIG-B. 3481 * For HE ER PPDU, add 8us for the HE-SIG-A. 3482 * For HE TB PPDU, add 4us for the HE-STF. 3483 * Add the HE-LTF durations - variable. 3484 */ 3485 } 3486 3487 break; 3488 case RX_ENC_HT: 3489 ri.mcs = status->rate_idx; 3490 ri.flags |= RATE_INFO_FLAGS_MCS; 3491 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3492 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3493 3494 /* 3495 * See P802.11REVmd_D3.0, section 19.3.2 for 3496 * HT PPDU format. 3497 */ 3498 if (mactime_plcp_start) { 3499 mpdu_offset += 2; 3500 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3501 ts += 24; 3502 else 3503 ts += 32; 3504 3505 /* 3506 * Add Data HT-LTFs per streams 3507 * TODO: add Extension HT-LTFs, 4us per LTF 3508 */ 3509 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3510 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3511 ts += n_ltf * 4; 3512 } 3513 3514 break; 3515 case RX_ENC_VHT: 3516 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3517 ri.mcs = status->rate_idx; 3518 ri.nss = status->nss; 3519 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3520 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3521 3522 /* 3523 * See P802.11REVmd_D3.0, section 21.3.2 for 3524 * VHT PPDU format. 3525 */ 3526 if (mactime_plcp_start) { 3527 mpdu_offset += 2; 3528 ts += 36; 3529 3530 /* 3531 * Add VHT-LTFs per streams 3532 */ 3533 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3534 ri.nss + 1 : ri.nss; 3535 ts += 4 * n_ltf; 3536 } 3537 3538 break; 3539 default: 3540 WARN_ON(1); 3541 fallthrough; 3542 case RX_ENC_LEGACY: { 3543 struct ieee80211_supported_band *sband; 3544 3545 sband = local->hw.wiphy->bands[status->band]; 3546 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3547 3548 if (mactime_plcp_start) { 3549 if (status->band == NL80211_BAND_5GHZ) { 3550 ts += 20; 3551 mpdu_offset += 2; 3552 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3553 ts += 96; 3554 } else { 3555 ts += 192; 3556 } 3557 } 3558 break; 3559 } 3560 } 3561 3562 rate = cfg80211_calculate_bitrate(&ri); 3563 if (WARN_ONCE(!rate, 3564 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3565 (unsigned long long)status->flag, status->rate_idx, 3566 status->nss)) 3567 return 0; 3568 3569 /* rewind from end of MPDU */ 3570 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3571 ts -= mpdu_len * 8 * 10 / rate; 3572 3573 ts += mpdu_offset * 8 * 10 / rate; 3574 3575 return ts; 3576 } 3577 3578 /* Cancel CAC for the interfaces under the specified @local. If @ctx is 3579 * also provided, only the interfaces using that ctx will be canceled. 3580 */ 3581 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local, 3582 struct ieee80211_chanctx *ctx) 3583 { 3584 struct ieee80211_sub_if_data *sdata; 3585 struct cfg80211_chan_def chandef; 3586 struct ieee80211_link_data *link; 3587 struct ieee80211_chanctx_conf *chanctx_conf; 3588 unsigned int link_id; 3589 3590 lockdep_assert_wiphy(local->hw.wiphy); 3591 3592 list_for_each_entry(sdata, &local->interfaces, list) { 3593 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3594 link_id++) { 3595 link = sdata_dereference(sdata->link[link_id], 3596 sdata); 3597 if (!link) 3598 continue; 3599 3600 chanctx_conf = sdata_dereference(link->conf->chanctx_conf, 3601 sdata); 3602 if (ctx && &ctx->conf != chanctx_conf) 3603 continue; 3604 3605 wiphy_hrtimer_work_cancel(local->hw.wiphy, 3606 &link->dfs_cac_timer_work); 3607 3608 if (!sdata->wdev.links[link_id].cac_started) 3609 continue; 3610 3611 chandef = link->conf->chanreq.oper; 3612 ieee80211_link_release_channel(link); 3613 cfg80211_cac_event(sdata->dev, &chandef, 3614 NL80211_RADAR_CAC_ABORTED, 3615 GFP_KERNEL, link_id); 3616 } 3617 } 3618 } 3619 3620 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3621 struct wiphy_work *work) 3622 { 3623 struct ieee80211_local *local = 3624 container_of(work, struct ieee80211_local, radar_detected_work); 3625 struct cfg80211_chan_def chandef; 3626 struct ieee80211_chanctx *ctx; 3627 3628 lockdep_assert_wiphy(local->hw.wiphy); 3629 3630 list_for_each_entry(ctx, &local->chanctx_list, list) { 3631 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3632 continue; 3633 3634 if (!ctx->radar_detected) 3635 continue; 3636 3637 ctx->radar_detected = false; 3638 3639 chandef = ctx->conf.def; 3640 3641 ieee80211_dfs_cac_cancel(local, ctx); 3642 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3643 } 3644 } 3645 3646 static void 3647 ieee80211_radar_mark_chan_ctx_iterator(struct ieee80211_hw *hw, 3648 struct ieee80211_chanctx_conf *chanctx_conf, 3649 void *data) 3650 { 3651 struct ieee80211_chanctx *ctx = 3652 container_of(chanctx_conf, struct ieee80211_chanctx, 3653 conf); 3654 3655 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3656 return; 3657 3658 if (data && data != chanctx_conf) 3659 return; 3660 3661 ctx->radar_detected = true; 3662 } 3663 3664 void ieee80211_radar_detected(struct ieee80211_hw *hw, 3665 struct ieee80211_chanctx_conf *chanctx_conf) 3666 { 3667 struct ieee80211_local *local = hw_to_local(hw); 3668 3669 trace_api_radar_detected(local); 3670 3671 ieee80211_iter_chan_contexts_atomic(hw, ieee80211_radar_mark_chan_ctx_iterator, 3672 chanctx_conf); 3673 3674 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3675 } 3676 EXPORT_SYMBOL(ieee80211_radar_detected); 3677 3678 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3679 struct ieee80211_conn_settings *conn) 3680 { 3681 enum nl80211_chan_width new_primary_width; 3682 struct ieee80211_conn_settings _ignored = {}; 3683 3684 /* allow passing NULL if caller doesn't care */ 3685 if (!conn) 3686 conn = &_ignored; 3687 3688 again: 3689 /* no-HT indicates nothing to do */ 3690 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3691 3692 switch (c->width) { 3693 default: 3694 case NL80211_CHAN_WIDTH_20_NOHT: 3695 WARN_ON_ONCE(1); 3696 fallthrough; 3697 case NL80211_CHAN_WIDTH_20: 3698 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3699 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3700 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3701 c->punctured = 0; 3702 break; 3703 case NL80211_CHAN_WIDTH_40: 3704 c->width = NL80211_CHAN_WIDTH_20; 3705 c->center_freq1 = c->chan->center_freq; 3706 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3707 conn->mode = IEEE80211_CONN_MODE_HT; 3708 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3709 c->punctured = 0; 3710 break; 3711 case NL80211_CHAN_WIDTH_80: 3712 new_primary_width = NL80211_CHAN_WIDTH_40; 3713 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3714 conn->mode = IEEE80211_CONN_MODE_HT; 3715 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3716 break; 3717 case NL80211_CHAN_WIDTH_80P80: 3718 c->center_freq2 = 0; 3719 c->width = NL80211_CHAN_WIDTH_80; 3720 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3721 break; 3722 case NL80211_CHAN_WIDTH_160: 3723 new_primary_width = NL80211_CHAN_WIDTH_80; 3724 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3725 break; 3726 case NL80211_CHAN_WIDTH_320: 3727 new_primary_width = NL80211_CHAN_WIDTH_160; 3728 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3729 break; 3730 case NL80211_CHAN_WIDTH_1: 3731 case NL80211_CHAN_WIDTH_2: 3732 case NL80211_CHAN_WIDTH_4: 3733 case NL80211_CHAN_WIDTH_8: 3734 case NL80211_CHAN_WIDTH_16: 3735 WARN_ON_ONCE(1); 3736 /* keep c->width */ 3737 conn->mode = IEEE80211_CONN_MODE_S1G; 3738 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3739 break; 3740 case NL80211_CHAN_WIDTH_5: 3741 case NL80211_CHAN_WIDTH_10: 3742 WARN_ON_ONCE(1); 3743 /* keep c->width */ 3744 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3745 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3746 break; 3747 } 3748 3749 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3750 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3751 &c->punctured); 3752 c->width = new_primary_width; 3753 } 3754 3755 /* 3756 * With an 80 MHz channel, we might have the puncturing in the primary 3757 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3758 * In that case, downgrade again. 3759 */ 3760 if (!cfg80211_chandef_valid(c) && c->punctured) 3761 goto again; 3762 3763 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3764 } 3765 3766 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3767 struct cfg80211_csa_settings *csa_settings) 3768 { 3769 struct sk_buff *skb; 3770 struct ieee80211_mgmt *mgmt; 3771 struct ieee80211_local *local = sdata->local; 3772 int freq; 3773 int hdr_len = offsetofend(struct ieee80211_mgmt, 3774 u.action.u.chan_switch); 3775 u8 *pos; 3776 3777 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3778 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3779 return -EOPNOTSUPP; 3780 3781 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3782 5 + /* channel switch announcement element */ 3783 3 + /* secondary channel offset element */ 3784 5 + /* wide bandwidth channel switch announcement */ 3785 8); /* mesh channel switch parameters element */ 3786 if (!skb) 3787 return -ENOMEM; 3788 3789 skb_reserve(skb, local->tx_headroom); 3790 mgmt = skb_put_zero(skb, hdr_len); 3791 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3792 IEEE80211_STYPE_ACTION); 3793 3794 eth_broadcast_addr(mgmt->da); 3795 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3796 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3797 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3798 } else { 3799 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3800 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3801 } 3802 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3803 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3804 pos = skb_put(skb, 5); 3805 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3806 *pos++ = 3; /* IE length */ 3807 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3808 freq = csa_settings->chandef.chan->center_freq; 3809 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3810 *pos++ = csa_settings->count; /* count */ 3811 3812 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3813 enum nl80211_channel_type ch_type; 3814 3815 skb_put(skb, 3); 3816 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3817 *pos++ = 1; /* IE length */ 3818 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3819 if (ch_type == NL80211_CHAN_HT40PLUS) 3820 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3821 else 3822 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3823 } 3824 3825 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3826 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3827 3828 skb_put(skb, 8); 3829 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3830 *pos++ = 6; /* IE length */ 3831 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3832 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3833 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3834 *pos++ |= csa_settings->block_tx ? 3835 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3836 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3837 pos += 2; 3838 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3839 pos += 2; 3840 } 3841 3842 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3843 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3844 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3845 skb_put(skb, 5); 3846 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3847 } 3848 3849 ieee80211_tx_skb(sdata, skb); 3850 return 0; 3851 } 3852 3853 static bool 3854 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3855 { 3856 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3857 int skip; 3858 3859 if (end > 0) 3860 return false; 3861 3862 /* One shot NOA */ 3863 if (data->count[i] == 1) 3864 return false; 3865 3866 if (data->desc[i].interval == 0) 3867 return false; 3868 3869 /* End time is in the past, check for repetitions */ 3870 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3871 if (data->count[i] < 255) { 3872 if (data->count[i] <= skip) { 3873 data->count[i] = 0; 3874 return false; 3875 } 3876 3877 data->count[i] -= skip; 3878 } 3879 3880 data->desc[i].start += skip * data->desc[i].interval; 3881 3882 return true; 3883 } 3884 3885 static bool 3886 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3887 s32 *offset) 3888 { 3889 bool ret = false; 3890 int i; 3891 3892 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3893 s32 cur; 3894 3895 if (!data->count[i]) 3896 continue; 3897 3898 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3899 ret = true; 3900 3901 cur = data->desc[i].start - tsf; 3902 if (cur > *offset) 3903 continue; 3904 3905 cur = data->desc[i].start + data->desc[i].duration - tsf; 3906 if (cur > *offset) 3907 *offset = cur; 3908 } 3909 3910 return ret; 3911 } 3912 3913 static u32 3914 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3915 { 3916 s32 offset = 0; 3917 int tries = 0; 3918 /* 3919 * arbitrary limit, used to avoid infinite loops when combined NoA 3920 * descriptors cover the full time period. 3921 */ 3922 int max_tries = 5; 3923 3924 ieee80211_extend_absent_time(data, tsf, &offset); 3925 do { 3926 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3927 break; 3928 3929 tries++; 3930 } while (tries < max_tries); 3931 3932 return offset; 3933 } 3934 3935 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3936 { 3937 u32 next_offset = BIT(31) - 1; 3938 int i; 3939 3940 data->absent = 0; 3941 data->has_next_tsf = false; 3942 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3943 s32 start; 3944 3945 if (!data->count[i]) 3946 continue; 3947 3948 ieee80211_extend_noa_desc(data, tsf, i); 3949 start = data->desc[i].start - tsf; 3950 if (start <= 0) 3951 data->absent |= BIT(i); 3952 3953 if (next_offset > start) 3954 next_offset = start; 3955 3956 data->has_next_tsf = true; 3957 } 3958 3959 if (data->absent) 3960 next_offset = ieee80211_get_noa_absent_time(data, tsf); 3961 3962 data->next_tsf = tsf + next_offset; 3963 } 3964 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3965 3966 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3967 struct ieee80211_noa_data *data, u32 tsf) 3968 { 3969 int ret = 0; 3970 int i; 3971 3972 memset(data, 0, sizeof(*data)); 3973 3974 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3975 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3976 3977 if (!desc->count || !desc->duration) 3978 continue; 3979 3980 data->count[i] = desc->count; 3981 data->desc[i].start = le32_to_cpu(desc->start_time); 3982 data->desc[i].duration = le32_to_cpu(desc->duration); 3983 data->desc[i].interval = le32_to_cpu(desc->interval); 3984 3985 if (data->count[i] > 1 && 3986 data->desc[i].interval < data->desc[i].duration) 3987 continue; 3988 3989 ieee80211_extend_noa_desc(data, tsf, i); 3990 ret++; 3991 } 3992 3993 if (ret) 3994 ieee80211_update_p2p_noa(data, tsf); 3995 3996 return ret; 3997 } 3998 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3999 4000 void ieee80211_recalc_dtim(struct ieee80211_sub_if_data *sdata, u64 tsf) 4001 { 4002 u64 dtim_count = 0; 4003 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4004 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4005 struct ps_data *ps; 4006 u8 bcns_from_dtim; 4007 4008 if (tsf == -1ULL || !beacon_int || !dtim_period) 4009 return; 4010 4011 if (sdata->vif.type == NL80211_IFTYPE_AP || 4012 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4013 if (!sdata->bss) 4014 return; 4015 4016 ps = &sdata->bss->ps; 4017 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4018 ps = &sdata->u.mesh.ps; 4019 } else { 4020 return; 4021 } 4022 4023 /* 4024 * actually finds last dtim_count, mac80211 will update in 4025 * __beacon_add_tim(). 4026 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4027 */ 4028 do_div(tsf, beacon_int); 4029 bcns_from_dtim = do_div(tsf, dtim_period); 4030 /* just had a DTIM */ 4031 if (!bcns_from_dtim) 4032 dtim_count = 0; 4033 else 4034 dtim_count = dtim_period - bcns_from_dtim; 4035 4036 ps->dtim_count = dtim_count; 4037 } 4038 4039 /* 4040 * Given a long beacon period, calculate the current index into 4041 * that period to determine the number of TSBTTs until the next TBTT. 4042 * It is completely valid to have a short beacon period that differs 4043 * from the dtim period (i.e a TBTT thats not a DTIM). 4044 */ 4045 void ieee80211_recalc_sb_count(struct ieee80211_sub_if_data *sdata, u64 tsf) 4046 { 4047 u32 sb_idx; 4048 struct ps_data *ps = &sdata->bss->ps; 4049 u8 lb_period = sdata->vif.bss_conf.s1g_long_beacon_period; 4050 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4051 4052 /* No mesh / IBSS support for short beaconing */ 4053 if (tsf == -1ULL || !lb_period || 4054 (sdata->vif.type != NL80211_IFTYPE_AP && 4055 sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) 4056 return; 4057 4058 /* find the current TSBTT index in our lb_period */ 4059 do_div(tsf, beacon_int); 4060 sb_idx = do_div(tsf, lb_period); 4061 4062 /* num TSBTTs until the next TBTT */ 4063 ps->sb_count = sb_idx ? lb_period - sb_idx : 0; 4064 } 4065 4066 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 4067 struct ieee80211_chanctx *ctx) 4068 { 4069 struct ieee80211_link_data *link; 4070 u8 radar_detect = 0; 4071 4072 lockdep_assert_wiphy(local->hw.wiphy); 4073 4074 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 4075 return 0; 4076 4077 for_each_sdata_link(local, link) { 4078 if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { 4079 /* 4080 * An in-place reservation context should not have any 4081 * assigned links until it replaces the other context. 4082 */ 4083 WARN_ON(ctx->replace_state == 4084 IEEE80211_CHANCTX_REPLACES_OTHER); 4085 4086 if (link->radar_required) 4087 radar_detect |= 4088 BIT(link->conf->chanreq.oper.width); 4089 } 4090 4091 if (link->reserved_chanctx == ctx && 4092 link->reserved_radar_required) 4093 radar_detect |= BIT(link->reserved.oper.width); 4094 } 4095 4096 return radar_detect; 4097 } 4098 4099 bool ieee80211_is_radio_idx_in_scan_req(struct wiphy *wiphy, 4100 struct cfg80211_scan_request *scan_req, 4101 int radio_idx) 4102 { 4103 struct ieee80211_channel *chan; 4104 int i, chan_radio_idx; 4105 4106 for (i = 0; i < scan_req->n_channels; i++) { 4107 chan = scan_req->channels[i]; 4108 chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); 4109 4110 /* The radio index either matched successfully, or an error 4111 * occurred. For example, if radio-level information is 4112 * missing, the same error value is returned. This 4113 * typically implies a single-radio setup, in which case 4114 * the operation should not be allowed. 4115 */ 4116 if (chan_radio_idx == radio_idx) 4117 return true; 4118 } 4119 4120 return false; 4121 } 4122 4123 static u32 4124 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) 4125 { 4126 struct ieee80211_bss_conf *link_conf; 4127 struct ieee80211_chanctx_conf *conf; 4128 unsigned int link_id; 4129 u32 mask = 0; 4130 4131 for_each_vif_active_link(&sdata->vif, link_conf, link_id) { 4132 conf = sdata_dereference(link_conf->chanctx_conf, sdata); 4133 if (!conf || conf->radio_idx < 0) 4134 continue; 4135 4136 mask |= BIT(conf->radio_idx); 4137 } 4138 4139 return mask; 4140 } 4141 4142 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) 4143 { 4144 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4145 4146 return __ieee80211_get_radio_mask(sdata); 4147 } 4148 4149 static bool 4150 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) 4151 { 4152 if (radio_idx < 0) 4153 return true; 4154 4155 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); 4156 } 4157 4158 static int 4159 ieee80211_fill_ifcomb_params(struct ieee80211_local *local, 4160 struct iface_combination_params *params, 4161 const struct cfg80211_chan_def *chandef, 4162 struct ieee80211_sub_if_data *sdata) 4163 { 4164 struct ieee80211_sub_if_data *sdata_iter; 4165 struct ieee80211_chanctx *ctx; 4166 int total = !!sdata; 4167 4168 list_for_each_entry(ctx, &local->chanctx_list, list) { 4169 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4170 continue; 4171 4172 if (params->radio_idx >= 0 && 4173 ctx->conf.radio_idx != params->radio_idx) 4174 continue; 4175 4176 params->radar_detect |= 4177 ieee80211_chanctx_radar_detect(local, ctx); 4178 4179 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE && 4180 cfg80211_chandef_compatible(chandef, &ctx->conf.def)) 4181 continue; 4182 4183 params->num_different_channels++; 4184 } 4185 4186 list_for_each_entry(sdata_iter, &local->interfaces, list) { 4187 struct wireless_dev *wdev_iter; 4188 4189 wdev_iter = &sdata_iter->wdev; 4190 4191 if (sdata_iter == sdata || 4192 !ieee80211_sdata_running(sdata_iter) || 4193 cfg80211_iftype_allowed(local->hw.wiphy, 4194 wdev_iter->iftype, 0, 1)) 4195 continue; 4196 4197 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) 4198 continue; 4199 4200 params->iftype_num[wdev_iter->iftype]++; 4201 total++; 4202 } 4203 4204 return total; 4205 } 4206 4207 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 4208 const struct cfg80211_chan_def *chandef, 4209 enum ieee80211_chanctx_mode chanmode, 4210 u8 radar_detect, int radio_idx) 4211 { 4212 bool shared = chanmode == IEEE80211_CHANCTX_SHARED; 4213 struct ieee80211_local *local = sdata->local; 4214 enum nl80211_iftype iftype = sdata->wdev.iftype; 4215 struct iface_combination_params params = { 4216 .radar_detect = radar_detect, 4217 .radio_idx = radio_idx, 4218 }; 4219 int total; 4220 4221 lockdep_assert_wiphy(local->hw.wiphy); 4222 4223 if (WARN_ON(hweight32(radar_detect) > 1)) 4224 return -EINVAL; 4225 4226 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4227 !chandef->chan)) 4228 return -EINVAL; 4229 4230 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4231 return -EINVAL; 4232 4233 if (sdata->vif.type == NL80211_IFTYPE_AP || 4234 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4235 /* 4236 * always passing this is harmless, since it'll be the 4237 * same value that cfg80211 finds if it finds the same 4238 * interface ... and that's always allowed 4239 */ 4240 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4241 } 4242 4243 /* Always allow software iftypes */ 4244 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4245 if (radar_detect) 4246 return -EINVAL; 4247 return 0; 4248 } 4249 4250 if (chandef) 4251 params.num_different_channels = 1; 4252 4253 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4254 params.iftype_num[iftype] = 1; 4255 4256 total = ieee80211_fill_ifcomb_params(local, ¶ms, 4257 shared ? chandef : NULL, 4258 sdata); 4259 if (total == 1 && !params.radar_detect) 4260 return 0; 4261 4262 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4263 } 4264 4265 static void 4266 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4267 void *data) 4268 { 4269 u32 *max_num_different_channels = data; 4270 4271 *max_num_different_channels = max(*max_num_different_channels, 4272 c->num_different_channels); 4273 } 4274 4275 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) 4276 { 4277 u32 max_num_different_channels = 1; 4278 int err; 4279 struct iface_combination_params params = { 4280 .radio_idx = radio_idx, 4281 }; 4282 4283 lockdep_assert_wiphy(local->hw.wiphy); 4284 4285 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL); 4286 4287 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4288 ieee80211_iter_max_chans, 4289 &max_num_different_channels); 4290 if (err < 0) 4291 return err; 4292 4293 return max_num_different_channels; 4294 } 4295 4296 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4297 struct ieee80211_sta_s1g_cap *caps, 4298 struct sk_buff *skb) 4299 { 4300 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4301 struct ieee80211_s1g_cap s1g_capab; 4302 u8 *pos; 4303 int i; 4304 4305 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4306 return; 4307 4308 if (!caps->s1g) 4309 return; 4310 4311 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4312 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4313 4314 /* override the capability info */ 4315 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4316 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4317 4318 s1g_capab.capab_info[i] &= ~mask; 4319 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4320 } 4321 4322 /* then MCS and NSS set */ 4323 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4324 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4325 4326 s1g_capab.supp_mcs_nss[i] &= ~mask; 4327 s1g_capab.supp_mcs_nss[i] |= 4328 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4329 } 4330 4331 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4332 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4333 *pos++ = sizeof(s1g_capab); 4334 4335 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4336 } 4337 4338 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4339 struct sk_buff *skb) 4340 { 4341 u8 *pos = skb_put(skb, 3); 4342 4343 *pos++ = WLAN_EID_AID_REQUEST; 4344 *pos++ = 1; 4345 *pos++ = 0; 4346 } 4347 4348 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4349 { 4350 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4351 *buf++ = 7; /* len */ 4352 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4353 *buf++ = 0x50; 4354 *buf++ = 0xf2; 4355 *buf++ = 2; /* WME */ 4356 *buf++ = 0; /* WME info */ 4357 *buf++ = 1; /* WME ver */ 4358 *buf++ = qosinfo; /* U-APSD no in use */ 4359 4360 return buf; 4361 } 4362 4363 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4364 unsigned long *frame_cnt, 4365 unsigned long *byte_cnt) 4366 { 4367 struct txq_info *txqi = to_txq_info(txq); 4368 u32 frag_cnt = 0, frag_bytes = 0; 4369 struct sk_buff *skb; 4370 4371 skb_queue_walk(&txqi->frags, skb) { 4372 frag_cnt++; 4373 frag_bytes += skb->len; 4374 } 4375 4376 if (frame_cnt) 4377 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4378 4379 if (byte_cnt) 4380 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4381 } 4382 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4383 4384 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4385 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4386 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4387 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4388 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4389 }; 4390 4391 u16 ieee80211_encode_usf(int listen_interval) 4392 { 4393 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4394 u16 ui, usf = 0; 4395 4396 /* find greatest USF */ 4397 while (usf < IEEE80211_MAX_USF) { 4398 if (listen_interval % listen_int_usf[usf + 1]) 4399 break; 4400 usf += 1; 4401 } 4402 ui = listen_interval / listen_int_usf[usf]; 4403 4404 /* error if there is a remainder. Should've been checked by user */ 4405 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4406 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4407 FIELD_PREP(LISTEN_INT_UI, ui); 4408 4409 return (u16) listen_interval; 4410 } 4411 4412 /* this may return more than ieee80211_put_eht_cap() will need */ 4413 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4414 { 4415 const struct ieee80211_sta_he_cap *he_cap; 4416 const struct ieee80211_sta_eht_cap *eht_cap; 4417 struct ieee80211_supported_band *sband; 4418 bool is_ap; 4419 u8 n; 4420 4421 sband = ieee80211_get_sband(sdata); 4422 if (!sband) 4423 return 0; 4424 4425 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4426 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4427 if (!he_cap || !eht_cap) 4428 return 0; 4429 4430 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4431 4432 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4433 &eht_cap->eht_cap_elem, 4434 is_ap); 4435 return 2 + 1 + 4436 sizeof(eht_cap->eht_cap_elem) + n + 4437 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4438 eht_cap->eht_cap_elem.phy_cap_info); 4439 return 0; 4440 } 4441 4442 int ieee80211_put_eht_cap(struct sk_buff *skb, 4443 struct ieee80211_sub_if_data *sdata, 4444 const struct ieee80211_supported_band *sband, 4445 const struct ieee80211_conn_settings *conn) 4446 { 4447 const struct ieee80211_sta_he_cap *he_cap = 4448 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4449 const struct ieee80211_sta_eht_cap *eht_cap = 4450 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4451 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4452 struct ieee80211_eht_cap_elem_fixed fixed; 4453 struct ieee80211_he_cap_elem he; 4454 u8 mcs_nss_len, ppet_len; 4455 u8 orig_mcs_nss_len; 4456 u8 ie_len; 4457 4458 if (!conn) 4459 conn = &ieee80211_conn_settings_unlimited; 4460 4461 /* Make sure we have place for the IE */ 4462 if (!he_cap || !eht_cap) 4463 return 0; 4464 4465 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4466 &eht_cap->eht_cap_elem, 4467 for_ap); 4468 4469 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4470 4471 fixed = eht_cap->eht_cap_elem; 4472 4473 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4474 fixed.phy_cap_info[6] &= 4475 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4476 4477 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4478 fixed.phy_cap_info[1] &= 4479 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4480 fixed.phy_cap_info[2] &= 4481 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4482 fixed.phy_cap_info[6] &= 4483 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4484 } 4485 4486 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4487 fixed.phy_cap_info[0] &= 4488 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4489 fixed.phy_cap_info[1] &= 4490 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4491 fixed.phy_cap_info[2] &= 4492 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4493 fixed.phy_cap_info[6] &= 4494 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4495 } 4496 4497 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4498 fixed.phy_cap_info[0] &= 4499 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4500 4501 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4502 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4503 fixed.phy_cap_info); 4504 4505 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4506 if (skb_tailroom(skb) < ie_len) 4507 return -ENOBUFS; 4508 4509 skb_put_u8(skb, WLAN_EID_EXTENSION); 4510 skb_put_u8(skb, ie_len - 2); 4511 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4512 skb_put_data(skb, &fixed, sizeof(fixed)); 4513 4514 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4515 /* 4516 * If the (non-AP) STA became 20 MHz only, then convert from 4517 * <=80 to 20-MHz-only format, where MCSes are indicated in 4518 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4519 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4520 */ 4521 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4522 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4523 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4524 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4525 } else { 4526 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4527 } 4528 4529 if (ppet_len) 4530 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4531 4532 return 0; 4533 } 4534 4535 int ieee80211_put_uhr_cap(struct sk_buff *skb, 4536 struct ieee80211_sub_if_data *sdata, 4537 const struct ieee80211_supported_band *sband) 4538 { 4539 const struct ieee80211_sta_uhr_cap *uhr_cap = 4540 ieee80211_get_uhr_iftype_cap_vif(sband, &sdata->vif); 4541 int len; 4542 4543 if (!uhr_cap) 4544 return 0; 4545 4546 len = 2 + 1 + sizeof(struct ieee80211_uhr_cap) + 4547 sizeof(struct ieee80211_uhr_cap_phy); 4548 4549 if (skb_tailroom(skb) < len) 4550 return -ENOBUFS; 4551 4552 skb_put_u8(skb, WLAN_EID_EXTENSION); 4553 skb_put_u8(skb, len - 2); 4554 skb_put_u8(skb, WLAN_EID_EXT_UHR_CAPA); 4555 skb_put_data(skb, &uhr_cap->mac, sizeof(uhr_cap->mac)); 4556 skb_put_data(skb, &uhr_cap->phy, sizeof(uhr_cap->phy)); 4557 4558 return 0; 4559 } 4560 4561 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4562 { 4563 static const char * const modes[] = { 4564 [IEEE80211_CONN_MODE_S1G] = "S1G", 4565 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4566 [IEEE80211_CONN_MODE_HT] = "HT", 4567 [IEEE80211_CONN_MODE_VHT] = "VHT", 4568 [IEEE80211_CONN_MODE_HE] = "HE", 4569 [IEEE80211_CONN_MODE_EHT] = "EHT", 4570 [IEEE80211_CONN_MODE_UHR] = "UHR", 4571 }; 4572 4573 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4574 return "<out of range>"; 4575 4576 return modes[mode] ?: "<missing string>"; 4577 } 4578 4579 enum ieee80211_conn_bw_limit 4580 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4581 { 4582 switch (chandef->width) { 4583 case NL80211_CHAN_WIDTH_20_NOHT: 4584 case NL80211_CHAN_WIDTH_20: 4585 return IEEE80211_CONN_BW_LIMIT_20; 4586 case NL80211_CHAN_WIDTH_40: 4587 return IEEE80211_CONN_BW_LIMIT_40; 4588 case NL80211_CHAN_WIDTH_80: 4589 return IEEE80211_CONN_BW_LIMIT_80; 4590 case NL80211_CHAN_WIDTH_80P80: 4591 case NL80211_CHAN_WIDTH_160: 4592 return IEEE80211_CONN_BW_LIMIT_160; 4593 case NL80211_CHAN_WIDTH_320: 4594 return IEEE80211_CONN_BW_LIMIT_320; 4595 default: 4596 WARN(1, "unhandled chandef width %d\n", chandef->width); 4597 return IEEE80211_CONN_BW_LIMIT_20; 4598 } 4599 } 4600 4601 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe) 4602 { 4603 for (int i = 0; i < 2; i++) { 4604 tpe->max_local[i].valid = false; 4605 memset(tpe->max_local[i].power, 4606 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4607 sizeof(tpe->max_local[i].power)); 4608 4609 tpe->max_reg_client[i].valid = false; 4610 memset(tpe->max_reg_client[i].power, 4611 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4612 sizeof(tpe->max_reg_client[i].power)); 4613 4614 tpe->psd_local[i].valid = false; 4615 memset(tpe->psd_local[i].power, 4616 IEEE80211_TPE_PSD_NO_LIMIT, 4617 sizeof(tpe->psd_local[i].power)); 4618 4619 tpe->psd_reg_client[i].valid = false; 4620 memset(tpe->psd_reg_client[i].power, 4621 IEEE80211_TPE_PSD_NO_LIMIT, 4622 sizeof(tpe->psd_reg_client[i].power)); 4623 } 4624 } 4625 4626 bool ieee80211_vif_nan_started(struct ieee80211_vif *vif) 4627 { 4628 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4629 4630 return vif->type == NL80211_IFTYPE_NAN && sdata->u.nan.started; 4631 } 4632 EXPORT_SYMBOL_GPL(ieee80211_vif_nan_started); 4633