1 // SPDX-License-Identifier: GPL-2.0-only
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) 2018-2021 Intel Corporation
11 * utilities for mac80211
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>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41 struct ieee80211_local *local;
43 local = wiphy_priv(wiphy);
46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
49 enum nl80211_iftype type)
51 __le16 fc = hdr->frame_control;
53 if (ieee80211_is_data(fc)) {
54 if (len < 24) /* drop incorrect hdr len (data) */
57 if (ieee80211_has_a4(fc))
59 if (ieee80211_has_tods(fc))
61 if (ieee80211_has_fromds(fc))
67 if (ieee80211_is_s1g_beacon(fc)) {
68 struct ieee80211_ext *ext = (void *) hdr;
70 return ext->u.s1g_beacon.sa;
73 if (ieee80211_is_mgmt(fc)) {
74 if (len < 24) /* drop incorrect hdr len (mgmt) */
79 if (ieee80211_is_ctl(fc)) {
80 if (ieee80211_is_pspoll(fc))
83 if (ieee80211_is_back_req(fc)) {
85 case NL80211_IFTYPE_STATION:
87 case NL80211_IFTYPE_AP:
88 case NL80211_IFTYPE_AP_VLAN:
91 break; /* fall through to the return */
98 EXPORT_SYMBOL(ieee80211_get_bssid);
100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
103 struct ieee80211_hdr *hdr;
105 skb_queue_walk(&tx->skbs, skb) {
106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
112 int rate, int erp, int short_preamble,
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
129 if (band == NL80211_BAND_5GHZ || erp) {
133 * N_DBPS = DATARATE x 4
134 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
135 * (16 = SIGNAL time, 6 = tail bits)
136 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
143 dur = 16; /* SIFS + signal ext */
144 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
145 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
147 /* IEEE 802.11-2012 18.3.2.4: all values above are:
148 * * times 4 for 5 MHz
149 * * times 2 for 10 MHz
153 /* rates should already consider the channel bandwidth,
154 * don't apply divisor again.
156 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
157 4 * rate); /* T_SYM x N_SYM */
160 * 802.11b or 802.11g with 802.11b compatibility:
161 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
162 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
164 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
165 * aSIFSTime = 10 usec
166 * aPreambleLength = 144 usec or 72 usec with short preamble
167 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
169 dur = 10; /* aSIFSTime = 10 usec */
170 dur += short_preamble ? (72 + 24) : (144 + 48);
172 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
178 /* Exported duration function for driver use */
179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
181 enum nl80211_band band,
183 struct ieee80211_rate *rate)
185 struct ieee80211_sub_if_data *sdata;
188 bool short_preamble = false;
192 sdata = vif_to_sdata(vif);
193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
194 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
196 shift = ieee80211_vif_get_shift(vif);
199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
200 short_preamble, shift);
202 return cpu_to_le16(dur);
204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
208 const struct ieee80211_tx_info *frame_txctl)
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
212 struct ieee80211_sub_if_data *sdata;
214 int erp, shift = 0, bitrate;
216 struct ieee80211_supported_band *sband;
218 sband = local->hw.wiphy->bands[frame_txctl->band];
220 short_preamble = false;
222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
226 sdata = vif_to_sdata(vif);
227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
228 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
230 shift = ieee80211_vif_get_shift(vif);
233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble, shift);
238 /* Data frame duration */
239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
240 erp, short_preamble, shift);
242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
243 erp, short_preamble, shift);
245 return cpu_to_le16(dur);
247 EXPORT_SYMBOL(ieee80211_rts_duration);
249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
252 const struct ieee80211_tx_info *frame_txctl)
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
256 struct ieee80211_sub_if_data *sdata;
258 int erp, shift = 0, bitrate;
260 struct ieee80211_supported_band *sband;
262 sband = local->hw.wiphy->bands[frame_txctl->band];
264 short_preamble = false;
266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
269 sdata = vif_to_sdata(vif);
270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
271 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
273 shift = ieee80211_vif_get_shift(vif);
276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
278 /* Data frame duration */
279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
280 erp, short_preamble, shift);
281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
284 erp, short_preamble, shift);
287 return cpu_to_le16(dur);
289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
293 struct ieee80211_local *local = sdata->local;
294 struct ieee80211_vif *vif = &sdata->vif;
295 struct fq *fq = &local->fq;
296 struct ps_data *ps = NULL;
297 struct txq_info *txqi;
298 struct sta_info *sta;
302 spin_lock(&fq->lock);
304 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
307 if (sdata->vif.type == NL80211_IFTYPE_AP)
308 ps = &sdata->bss->ps;
310 sdata->vif.txqs_stopped[ac] = false;
312 list_for_each_entry_rcu(sta, &local->sta_list, list) {
313 if (sdata != sta->sdata)
316 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
317 struct ieee80211_txq *txq = sta->sta.txq[i];
322 txqi = to_txq_info(txq);
327 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
331 spin_unlock(&fq->lock);
332 drv_wake_tx_queue(local, txqi);
333 spin_lock(&fq->lock);
340 txqi = to_txq_info(vif->txq);
342 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
343 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
346 spin_unlock(&fq->lock);
348 drv_wake_tx_queue(local, txqi);
352 spin_unlock(&fq->lock);
357 __releases(&local->queue_stop_reason_lock)
358 __acquires(&local->queue_stop_reason_lock)
359 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
361 struct ieee80211_sub_if_data *sdata;
362 int n_acs = IEEE80211_NUM_ACS;
367 if (local->hw.queues < IEEE80211_NUM_ACS)
370 for (i = 0; i < local->hw.queues; i++) {
371 if (local->queue_stop_reasons[i])
374 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
375 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
378 for (ac = 0; ac < n_acs; ac++) {
379 int ac_queue = sdata->vif.hw_queue[ac];
382 sdata->vif.cab_queue == i)
383 __ieee80211_wake_txqs(sdata, ac);
386 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
392 void ieee80211_wake_txqs(struct tasklet_struct *t)
394 struct ieee80211_local *local = from_tasklet(local, t,
398 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
399 _ieee80211_wake_txqs(local, &flags);
400 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
403 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
405 struct ieee80211_sub_if_data *sdata;
406 int n_acs = IEEE80211_NUM_ACS;
408 if (local->ops->wake_tx_queue)
411 if (local->hw.queues < IEEE80211_NUM_ACS)
414 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
420 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
421 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
424 for (ac = 0; ac < n_acs; ac++) {
425 int ac_queue = sdata->vif.hw_queue[ac];
427 if (ac_queue == queue ||
428 (sdata->vif.cab_queue == queue &&
429 local->queue_stop_reasons[ac_queue] == 0 &&
430 skb_queue_empty(&local->pending[ac_queue])))
431 netif_wake_subqueue(sdata->dev, ac);
436 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
437 enum queue_stop_reason reason,
439 unsigned long *flags)
441 struct ieee80211_local *local = hw_to_local(hw);
443 trace_wake_queue(local, queue, reason);
445 if (WARN_ON(queue >= hw->queues))
448 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
452 local->q_stop_reasons[queue][reason] = 0;
454 local->q_stop_reasons[queue][reason]--;
455 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
456 local->q_stop_reasons[queue][reason] = 0;
459 if (local->q_stop_reasons[queue][reason] == 0)
460 __clear_bit(reason, &local->queue_stop_reasons[queue]);
462 if (local->queue_stop_reasons[queue] != 0)
463 /* someone still has this queue stopped */
466 if (skb_queue_empty(&local->pending[queue])) {
468 ieee80211_propagate_queue_wake(local, queue);
471 tasklet_schedule(&local->tx_pending_tasklet);
474 * Calling _ieee80211_wake_txqs here can be a problem because it may
475 * release queue_stop_reason_lock which has been taken by
476 * __ieee80211_wake_queue's caller. It is certainly not very nice to
477 * release someone's lock, but it is fine because all the callers of
478 * __ieee80211_wake_queue call it right before releasing the lock.
480 if (local->ops->wake_tx_queue) {
481 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
482 tasklet_schedule(&local->wake_txqs_tasklet);
484 _ieee80211_wake_txqs(local, flags);
488 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
489 enum queue_stop_reason reason,
492 struct ieee80211_local *local = hw_to_local(hw);
495 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
496 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
497 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
500 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
502 ieee80211_wake_queue_by_reason(hw, queue,
503 IEEE80211_QUEUE_STOP_REASON_DRIVER,
506 EXPORT_SYMBOL(ieee80211_wake_queue);
508 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
509 enum queue_stop_reason reason,
512 struct ieee80211_local *local = hw_to_local(hw);
513 struct ieee80211_sub_if_data *sdata;
514 int n_acs = IEEE80211_NUM_ACS;
516 trace_stop_queue(local, queue, reason);
518 if (WARN_ON(queue >= hw->queues))
522 local->q_stop_reasons[queue][reason] = 1;
524 local->q_stop_reasons[queue][reason]++;
526 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
529 if (local->hw.queues < IEEE80211_NUM_ACS)
533 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
539 for (ac = 0; ac < n_acs; ac++) {
540 if (sdata->vif.hw_queue[ac] == queue ||
541 sdata->vif.cab_queue == queue) {
542 if (!local->ops->wake_tx_queue) {
543 netif_stop_subqueue(sdata->dev, ac);
546 spin_lock(&local->fq.lock);
547 sdata->vif.txqs_stopped[ac] = true;
548 spin_unlock(&local->fq.lock);
555 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
556 enum queue_stop_reason reason,
559 struct ieee80211_local *local = hw_to_local(hw);
562 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
563 __ieee80211_stop_queue(hw, queue, reason, refcounted);
564 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
567 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
569 ieee80211_stop_queue_by_reason(hw, queue,
570 IEEE80211_QUEUE_STOP_REASON_DRIVER,
573 EXPORT_SYMBOL(ieee80211_stop_queue);
575 void ieee80211_add_pending_skb(struct ieee80211_local *local,
578 struct ieee80211_hw *hw = &local->hw;
580 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
581 int queue = info->hw_queue;
583 if (WARN_ON(!info->control.vif)) {
584 ieee80211_free_txskb(&local->hw, skb);
588 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
589 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
591 __skb_queue_tail(&local->pending[queue], skb);
592 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
594 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
597 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
598 struct sk_buff_head *skbs)
600 struct ieee80211_hw *hw = &local->hw;
605 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
606 while ((skb = skb_dequeue(skbs))) {
607 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
609 if (WARN_ON(!info->control.vif)) {
610 ieee80211_free_txskb(&local->hw, skb);
614 queue = info->hw_queue;
616 __ieee80211_stop_queue(hw, queue,
617 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
620 __skb_queue_tail(&local->pending[queue], skb);
623 for (i = 0; i < hw->queues; i++)
624 __ieee80211_wake_queue(hw, i,
625 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
627 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
630 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
631 unsigned long queues,
632 enum queue_stop_reason reason,
635 struct ieee80211_local *local = hw_to_local(hw);
639 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
641 for_each_set_bit(i, &queues, hw->queues)
642 __ieee80211_stop_queue(hw, i, reason, refcounted);
644 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
647 void ieee80211_stop_queues(struct ieee80211_hw *hw)
649 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
650 IEEE80211_QUEUE_STOP_REASON_DRIVER,
653 EXPORT_SYMBOL(ieee80211_stop_queues);
655 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
657 struct ieee80211_local *local = hw_to_local(hw);
661 if (WARN_ON(queue >= hw->queues))
664 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
665 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
666 &local->queue_stop_reasons[queue]);
667 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
670 EXPORT_SYMBOL(ieee80211_queue_stopped);
672 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
673 unsigned long queues,
674 enum queue_stop_reason reason,
677 struct ieee80211_local *local = hw_to_local(hw);
681 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
683 for_each_set_bit(i, &queues, hw->queues)
684 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
686 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
689 void ieee80211_wake_queues(struct ieee80211_hw *hw)
691 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
692 IEEE80211_QUEUE_STOP_REASON_DRIVER,
695 EXPORT_SYMBOL(ieee80211_wake_queues);
698 ieee80211_get_vif_queues(struct ieee80211_local *local,
699 struct ieee80211_sub_if_data *sdata)
703 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
708 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
709 queues |= BIT(sdata->vif.hw_queue[ac]);
710 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
711 queues |= BIT(sdata->vif.cab_queue);
714 queues = BIT(local->hw.queues) - 1;
720 void __ieee80211_flush_queues(struct ieee80211_local *local,
721 struct ieee80211_sub_if_data *sdata,
722 unsigned int queues, bool drop)
724 if (!local->ops->flush)
728 * If no queue was set, or if the HW doesn't support
729 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
731 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
732 queues = ieee80211_get_vif_queues(local, sdata);
734 ieee80211_stop_queues_by_reason(&local->hw, queues,
735 IEEE80211_QUEUE_STOP_REASON_FLUSH,
738 drv_flush(local, sdata, queues, drop);
740 ieee80211_wake_queues_by_reason(&local->hw, queues,
741 IEEE80211_QUEUE_STOP_REASON_FLUSH,
745 void ieee80211_flush_queues(struct ieee80211_local *local,
746 struct ieee80211_sub_if_data *sdata, bool drop)
748 __ieee80211_flush_queues(local, sdata, 0, drop);
751 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
752 struct ieee80211_sub_if_data *sdata,
753 enum queue_stop_reason reason)
755 ieee80211_stop_queues_by_reason(&local->hw,
756 ieee80211_get_vif_queues(local, sdata),
760 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
761 struct ieee80211_sub_if_data *sdata,
762 enum queue_stop_reason reason)
764 ieee80211_wake_queues_by_reason(&local->hw,
765 ieee80211_get_vif_queues(local, sdata),
769 static void __iterate_interfaces(struct ieee80211_local *local,
771 void (*iterator)(void *data, u8 *mac,
772 struct ieee80211_vif *vif),
775 struct ieee80211_sub_if_data *sdata;
776 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
778 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
779 switch (sdata->vif.type) {
780 case NL80211_IFTYPE_MONITOR:
781 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
784 case NL80211_IFTYPE_AP_VLAN:
789 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
790 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
792 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
793 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
795 if (ieee80211_sdata_running(sdata) || !active_only)
796 iterator(data, sdata->vif.addr,
800 sdata = rcu_dereference_check(local->monitor_sdata,
801 lockdep_is_held(&local->iflist_mtx) ||
802 lockdep_is_held(&local->hw.wiphy->mtx));
804 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
805 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
806 iterator(data, sdata->vif.addr, &sdata->vif);
809 void ieee80211_iterate_interfaces(
810 struct ieee80211_hw *hw, u32 iter_flags,
811 void (*iterator)(void *data, u8 *mac,
812 struct ieee80211_vif *vif),
815 struct ieee80211_local *local = hw_to_local(hw);
817 mutex_lock(&local->iflist_mtx);
818 __iterate_interfaces(local, iter_flags, iterator, data);
819 mutex_unlock(&local->iflist_mtx);
821 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
823 void ieee80211_iterate_active_interfaces_atomic(
824 struct ieee80211_hw *hw, u32 iter_flags,
825 void (*iterator)(void *data, u8 *mac,
826 struct ieee80211_vif *vif),
829 struct ieee80211_local *local = hw_to_local(hw);
832 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
836 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
838 void ieee80211_iterate_active_interfaces_mtx(
839 struct ieee80211_hw *hw, u32 iter_flags,
840 void (*iterator)(void *data, u8 *mac,
841 struct ieee80211_vif *vif),
844 struct ieee80211_local *local = hw_to_local(hw);
846 lockdep_assert_wiphy(hw->wiphy);
848 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
851 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
853 static void __iterate_stations(struct ieee80211_local *local,
854 void (*iterator)(void *data,
855 struct ieee80211_sta *sta),
858 struct sta_info *sta;
860 list_for_each_entry_rcu(sta, &local->sta_list, list) {
864 iterator(data, &sta->sta);
868 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
869 void (*iterator)(void *data,
870 struct ieee80211_sta *sta),
873 struct ieee80211_local *local = hw_to_local(hw);
875 mutex_lock(&local->sta_mtx);
876 __iterate_stations(local, iterator, data);
877 mutex_unlock(&local->sta_mtx);
879 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
881 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
882 void (*iterator)(void *data,
883 struct ieee80211_sta *sta),
886 struct ieee80211_local *local = hw_to_local(hw);
889 __iterate_stations(local, iterator, data);
892 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
894 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
896 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
898 if (!ieee80211_sdata_running(sdata) ||
899 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
903 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
905 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
910 return &vif_to_sdata(vif)->wdev;
912 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
915 * Nothing should have been stuffed into the workqueue during
916 * the suspend->resume cycle. Since we can't check each caller
917 * of this function if we are already quiescing / suspended,
918 * check here and don't WARN since this can actually happen when
919 * the rx path (for example) is racing against __ieee80211_suspend
920 * and suspending / quiescing was set after the rx path checked
923 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
925 if (local->quiescing || (local->suspended && !local->resuming)) {
926 pr_warn("queueing ieee80211 work while going to suspend\n");
933 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
935 struct ieee80211_local *local = hw_to_local(hw);
937 if (!ieee80211_can_queue_work(local))
940 queue_work(local->workqueue, work);
942 EXPORT_SYMBOL(ieee80211_queue_work);
944 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
945 struct delayed_work *dwork,
948 struct ieee80211_local *local = hw_to_local(hw);
950 if (!ieee80211_can_queue_work(local))
953 queue_delayed_work(local->workqueue, dwork, delay);
955 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
957 static void ieee80211_parse_extension_element(u32 *crc,
958 const struct element *elem,
959 struct ieee802_11_elems *elems)
961 const void *data = elem->data + 1;
967 len = elem->datalen - 1;
969 switch (elem->data[0]) {
970 case WLAN_EID_EXT_HE_MU_EDCA:
971 if (len >= sizeof(*elems->mu_edca_param_set)) {
972 elems->mu_edca_param_set = data;
974 *crc = crc32_be(*crc, (void *)elem,
978 case WLAN_EID_EXT_HE_CAPABILITY:
979 if (ieee80211_he_capa_size_ok(data, len)) {
980 elems->he_cap = data;
981 elems->he_cap_len = len;
984 case WLAN_EID_EXT_HE_OPERATION:
985 if (len >= sizeof(*elems->he_operation) &&
986 len >= ieee80211_he_oper_size(data) - 1) {
988 *crc = crc32_be(*crc, (void *)elem,
990 elems->he_operation = data;
993 case WLAN_EID_EXT_UORA:
995 elems->uora_element = data;
997 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
999 elems->max_channel_switch_time = data;
1001 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
1002 if (len >= sizeof(*elems->mbssid_config_ie))
1003 elems->mbssid_config_ie = data;
1005 case WLAN_EID_EXT_HE_SPR:
1006 if (len >= sizeof(*elems->he_spr) &&
1007 len >= ieee80211_he_spr_size(data))
1008 elems->he_spr = data;
1010 case WLAN_EID_EXT_HE_6GHZ_CAPA:
1011 if (len >= sizeof(*elems->he_6ghz_capa))
1012 elems->he_6ghz_capa = data;
1014 case WLAN_EID_EXT_EHT_CAPABILITY:
1015 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1017 elems->eht_cap = data;
1018 elems->eht_cap_len = len;
1021 case WLAN_EID_EXT_EHT_OPERATION:
1022 if (ieee80211_eht_oper_size_ok(data, len))
1023 elems->eht_operation = data;
1029 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1030 struct ieee802_11_elems *elems,
1031 u64 filter, u32 crc,
1032 const struct element *check_inherit)
1034 const struct element *elem;
1035 bool calc_crc = filter != 0;
1036 DECLARE_BITMAP(seen_elems, 256);
1039 bitmap_zero(seen_elems, 256);
1041 for_each_element(elem, start, len) {
1042 bool elem_parse_failed;
1044 u8 elen = elem->datalen;
1045 const u8 *pos = elem->data;
1047 if (check_inherit &&
1048 !cfg80211_is_element_inherited(elem,
1054 case WLAN_EID_SUPP_RATES:
1055 case WLAN_EID_FH_PARAMS:
1056 case WLAN_EID_DS_PARAMS:
1057 case WLAN_EID_CF_PARAMS:
1059 case WLAN_EID_IBSS_PARAMS:
1060 case WLAN_EID_CHALLENGE:
1062 case WLAN_EID_ERP_INFO:
1063 case WLAN_EID_EXT_SUPP_RATES:
1064 case WLAN_EID_HT_CAPABILITY:
1065 case WLAN_EID_HT_OPERATION:
1066 case WLAN_EID_VHT_CAPABILITY:
1067 case WLAN_EID_VHT_OPERATION:
1068 case WLAN_EID_MESH_ID:
1069 case WLAN_EID_MESH_CONFIG:
1070 case WLAN_EID_PEER_MGMT:
1075 case WLAN_EID_CHANNEL_SWITCH:
1076 case WLAN_EID_EXT_CHANSWITCH_ANN:
1077 case WLAN_EID_COUNTRY:
1078 case WLAN_EID_PWR_CONSTRAINT:
1079 case WLAN_EID_TIMEOUT_INTERVAL:
1080 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1081 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1082 case WLAN_EID_CHAN_SWITCH_PARAM:
1083 case WLAN_EID_EXT_CAPABILITY:
1084 case WLAN_EID_CHAN_SWITCH_TIMING:
1085 case WLAN_EID_LINK_ID:
1086 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1088 case WLAN_EID_S1G_BCN_COMPAT:
1089 case WLAN_EID_S1G_CAPABILITIES:
1090 case WLAN_EID_S1G_OPERATION:
1091 case WLAN_EID_AID_RESPONSE:
1092 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1094 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1095 * that if the content gets bigger it might be needed more than once
1097 if (test_bit(id, seen_elems)) {
1098 elems->parse_error = true;
1104 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1105 crc = crc32_be(crc, pos - 2, elen + 2);
1107 elem_parse_failed = false;
1110 case WLAN_EID_LINK_ID:
1111 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1112 elem_parse_failed = true;
1115 elems->lnk_id = (void *)(pos - 2);
1117 case WLAN_EID_CHAN_SWITCH_TIMING:
1118 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1119 elem_parse_failed = true;
1122 elems->ch_sw_timing = (void *)pos;
1124 case WLAN_EID_EXT_CAPABILITY:
1125 elems->ext_capab = pos;
1126 elems->ext_capab_len = elen;
1130 elems->ssid_len = elen;
1132 case WLAN_EID_SUPP_RATES:
1133 elems->supp_rates = pos;
1134 elems->supp_rates_len = elen;
1136 case WLAN_EID_DS_PARAMS:
1138 elems->ds_params = pos;
1140 elem_parse_failed = true;
1143 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1144 elems->tim = (void *)pos;
1145 elems->tim_len = elen;
1147 elem_parse_failed = true;
1149 case WLAN_EID_VENDOR_SPECIFIC:
1150 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1152 /* Microsoft OUI (00:50:F2) */
1155 crc = crc32_be(crc, pos - 2, elen + 2);
1157 if (elen >= 5 && pos[3] == 2) {
1158 /* OUI Type 2 - WMM IE */
1160 elems->wmm_info = pos;
1161 elems->wmm_info_len = elen;
1162 } else if (pos[4] == 1) {
1163 elems->wmm_param = pos;
1164 elems->wmm_param_len = elen;
1171 elems->rsn_len = elen;
1173 case WLAN_EID_ERP_INFO:
1175 elems->erp_info = pos;
1177 elem_parse_failed = true;
1179 case WLAN_EID_EXT_SUPP_RATES:
1180 elems->ext_supp_rates = pos;
1181 elems->ext_supp_rates_len = elen;
1183 case WLAN_EID_HT_CAPABILITY:
1184 if (elen >= sizeof(struct ieee80211_ht_cap))
1185 elems->ht_cap_elem = (void *)pos;
1187 elem_parse_failed = true;
1189 case WLAN_EID_HT_OPERATION:
1190 if (elen >= sizeof(struct ieee80211_ht_operation))
1191 elems->ht_operation = (void *)pos;
1193 elem_parse_failed = true;
1195 case WLAN_EID_VHT_CAPABILITY:
1196 if (elen >= sizeof(struct ieee80211_vht_cap))
1197 elems->vht_cap_elem = (void *)pos;
1199 elem_parse_failed = true;
1201 case WLAN_EID_VHT_OPERATION:
1202 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1203 elems->vht_operation = (void *)pos;
1205 crc = crc32_be(crc, pos - 2, elen + 2);
1208 elem_parse_failed = true;
1210 case WLAN_EID_OPMODE_NOTIF:
1212 elems->opmode_notif = pos;
1214 crc = crc32_be(crc, pos - 2, elen + 2);
1217 elem_parse_failed = true;
1219 case WLAN_EID_MESH_ID:
1220 elems->mesh_id = pos;
1221 elems->mesh_id_len = elen;
1223 case WLAN_EID_MESH_CONFIG:
1224 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1225 elems->mesh_config = (void *)pos;
1227 elem_parse_failed = true;
1229 case WLAN_EID_PEER_MGMT:
1230 elems->peering = pos;
1231 elems->peering_len = elen;
1233 case WLAN_EID_MESH_AWAKE_WINDOW:
1235 elems->awake_window = (void *)pos;
1239 elems->preq_len = elen;
1243 elems->prep_len = elen;
1247 elems->perr_len = elen;
1250 if (elen >= sizeof(struct ieee80211_rann_ie))
1251 elems->rann = (void *)pos;
1253 elem_parse_failed = true;
1255 case WLAN_EID_CHANNEL_SWITCH:
1256 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1257 elem_parse_failed = true;
1260 elems->ch_switch_ie = (void *)pos;
1262 case WLAN_EID_EXT_CHANSWITCH_ANN:
1263 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1264 elem_parse_failed = true;
1267 elems->ext_chansw_ie = (void *)pos;
1269 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1270 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1271 elem_parse_failed = true;
1274 elems->sec_chan_offs = (void *)pos;
1276 case WLAN_EID_CHAN_SWITCH_PARAM:
1278 sizeof(*elems->mesh_chansw_params_ie)) {
1279 elem_parse_failed = true;
1282 elems->mesh_chansw_params_ie = (void *)pos;
1284 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1286 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1287 elem_parse_failed = true;
1290 elems->wide_bw_chansw_ie = (void *)pos;
1292 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1294 elem_parse_failed = true;
1298 * This is a bit tricky, but as we only care about
1299 * the wide bandwidth channel switch element, so
1300 * just parse it out manually.
1302 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1305 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1306 elems->wide_bw_chansw_ie =
1309 elem_parse_failed = true;
1312 case WLAN_EID_COUNTRY:
1313 elems->country_elem = pos;
1314 elems->country_elem_len = elen;
1316 case WLAN_EID_PWR_CONSTRAINT:
1318 elem_parse_failed = true;
1321 elems->pwr_constr_elem = pos;
1323 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1324 /* Lots of different options exist, but we only care
1325 * about the Dynamic Transmit Power Control element.
1326 * First check for the Cisco OUI, then for the DTPC
1330 elem_parse_failed = true;
1334 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1335 pos[2] != 0x96 || pos[3] != 0x00)
1339 elem_parse_failed = true;
1344 crc = crc32_be(crc, pos - 2, elen + 2);
1346 elems->cisco_dtpc_elem = pos;
1348 case WLAN_EID_ADDBA_EXT:
1349 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1350 elem_parse_failed = true;
1353 elems->addba_ext_ie = (void *)pos;
1355 case WLAN_EID_TIMEOUT_INTERVAL:
1356 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1357 elems->timeout_int = (void *)pos;
1359 elem_parse_failed = true;
1361 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1362 if (elen >= sizeof(*elems->max_idle_period_ie))
1363 elems->max_idle_period_ie = (void *)pos;
1367 elems->rsnx_len = elen;
1369 case WLAN_EID_TX_POWER_ENVELOPE:
1371 elen > sizeof(struct ieee80211_tx_pwr_env))
1374 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1377 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1378 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1379 elems->tx_pwr_env_num++;
1381 case WLAN_EID_EXTENSION:
1382 ieee80211_parse_extension_element(calc_crc ?
1386 case WLAN_EID_S1G_CAPABILITIES:
1387 if (elen >= sizeof(*elems->s1g_capab))
1388 elems->s1g_capab = (void *)pos;
1390 elem_parse_failed = true;
1392 case WLAN_EID_S1G_OPERATION:
1393 if (elen == sizeof(*elems->s1g_oper))
1394 elems->s1g_oper = (void *)pos;
1396 elem_parse_failed = true;
1398 case WLAN_EID_S1G_BCN_COMPAT:
1399 if (elen == sizeof(*elems->s1g_bcn_compat))
1400 elems->s1g_bcn_compat = (void *)pos;
1402 elem_parse_failed = true;
1404 case WLAN_EID_AID_RESPONSE:
1405 if (elen == sizeof(struct ieee80211_aid_response_ie))
1406 elems->aid_resp = (void *)pos;
1408 elem_parse_failed = true;
1414 if (elem_parse_failed)
1415 elems->parse_error = true;
1417 __set_bit(id, seen_elems);
1420 if (!for_each_element_completed(elem, start, len))
1421 elems->parse_error = true;
1426 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1427 struct ieee802_11_elems *elems,
1428 const u8 *transmitter_bssid,
1429 const u8 *bss_bssid,
1430 u8 *nontransmitted_profile)
1432 const struct element *elem, *sub;
1433 size_t profile_len = 0;
1436 if (!bss_bssid || !transmitter_bssid)
1439 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1440 if (elem->datalen < 2)
1443 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1444 u8 new_bssid[ETH_ALEN];
1447 if (sub->id != 0 || sub->datalen < 4) {
1448 /* not a valid BSS profile */
1452 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1453 sub->data[1] != 2) {
1454 /* The first element of the
1455 * Nontransmitted BSSID Profile is not
1456 * the Nontransmitted BSSID Capability
1462 memset(nontransmitted_profile, 0, len);
1463 profile_len = cfg80211_merge_profile(start, len,
1466 nontransmitted_profile,
1469 /* found a Nontransmitted BSSID Profile */
1470 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1471 nontransmitted_profile,
1473 if (!index || index[1] < 1 || index[2] == 0) {
1474 /* Invalid MBSSID Index element */
1478 cfg80211_gen_new_bssid(transmitter_bssid,
1482 if (ether_addr_equal(new_bssid, bss_bssid)) {
1484 elems->bssid_index_len = index[1];
1485 elems->bssid_index = (void *)&index[2];
1491 return found ? profile_len : 0;
1494 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
1495 bool action, u64 filter,
1497 const u8 *transmitter_bssid,
1498 const u8 *bss_bssid)
1500 struct ieee802_11_elems *elems;
1501 const struct element *non_inherit = NULL;
1502 u8 *nontransmitted_profile;
1503 int nontransmitted_profile_len = 0;
1505 elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
1508 elems->ie_start = start;
1509 elems->total_len = len;
1511 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1512 if (nontransmitted_profile) {
1513 nontransmitted_profile_len =
1514 ieee802_11_find_bssid_profile(start, len, elems,
1517 nontransmitted_profile);
1519 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1520 nontransmitted_profile,
1521 nontransmitted_profile_len);
1524 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1527 /* Override with nontransmitted profile, if found */
1528 if (nontransmitted_profile_len)
1529 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1530 nontransmitted_profile_len,
1531 action, elems, 0, 0, NULL);
1533 if (elems->tim && !elems->parse_error) {
1534 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1536 elems->dtim_period = tim_ie->dtim_period;
1537 elems->dtim_count = tim_ie->dtim_count;
1540 /* Override DTIM period and count if needed */
1541 if (elems->bssid_index &&
1542 elems->bssid_index_len >=
1543 offsetofend(struct ieee80211_bssid_index, dtim_period))
1544 elems->dtim_period = elems->bssid_index->dtim_period;
1546 if (elems->bssid_index &&
1547 elems->bssid_index_len >=
1548 offsetofend(struct ieee80211_bssid_index, dtim_count))
1549 elems->dtim_count = elems->bssid_index->dtim_count;
1551 kfree(nontransmitted_profile);
1558 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1559 struct ieee80211_tx_queue_params
1562 struct ieee80211_chanctx_conf *chanctx_conf;
1563 const struct ieee80211_reg_rule *rrule;
1564 const struct ieee80211_wmm_ac *wmm_ac;
1565 u16 center_freq = 0;
1567 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1568 sdata->vif.type != NL80211_IFTYPE_STATION)
1572 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1574 center_freq = chanctx_conf->def.chan->center_freq;
1581 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1583 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1588 if (sdata->vif.type == NL80211_IFTYPE_AP)
1589 wmm_ac = &rrule->wmm_rule.ap[ac];
1591 wmm_ac = &rrule->wmm_rule.client[ac];
1592 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1593 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1594 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1595 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1599 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1600 bool bss_notify, bool enable_qos)
1602 struct ieee80211_local *local = sdata->local;
1603 struct ieee80211_tx_queue_params qparam;
1604 struct ieee80211_chanctx_conf *chanctx_conf;
1607 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1610 if (!local->ops->conf_tx)
1613 if (local->hw.queues < IEEE80211_NUM_ACS)
1616 memset(&qparam, 0, sizeof(qparam));
1619 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1620 use_11b = (chanctx_conf &&
1621 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1622 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1625 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1627 /* Set defaults according to 802.11-2007 Table 7-37 */
1634 /* Confiure old 802.11b/g medium access rules. */
1635 qparam.cw_max = aCWmax;
1636 qparam.cw_min = aCWmin;
1640 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1641 /* Update if QoS is enabled. */
1644 case IEEE80211_AC_BK:
1645 qparam.cw_max = aCWmax;
1646 qparam.cw_min = aCWmin;
1653 /* never happens but let's not leave undefined */
1655 case IEEE80211_AC_BE:
1656 qparam.cw_max = aCWmax;
1657 qparam.cw_min = aCWmin;
1664 case IEEE80211_AC_VI:
1665 qparam.cw_max = aCWmin;
1666 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1670 qparam.txop = 6016/32;
1672 qparam.txop = 3008/32;
1679 case IEEE80211_AC_VO:
1680 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1681 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1685 qparam.txop = 3264/32;
1687 qparam.txop = 1504/32;
1692 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1694 qparam.uapsd = false;
1696 sdata->tx_conf[ac] = qparam;
1697 drv_conf_tx(local, sdata, ac, &qparam);
1700 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1701 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1702 sdata->vif.type != NL80211_IFTYPE_NAN) {
1703 sdata->vif.bss_conf.qos = enable_qos;
1705 ieee80211_bss_info_change_notify(sdata,
1710 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1711 u16 transaction, u16 auth_alg, u16 status,
1712 const u8 *extra, size_t extra_len, const u8 *da,
1713 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1716 struct ieee80211_local *local = sdata->local;
1717 struct sk_buff *skb;
1718 struct ieee80211_mgmt *mgmt;
1721 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1722 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1723 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1727 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1729 mgmt = skb_put_zero(skb, 24 + 6);
1730 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1731 IEEE80211_STYPE_AUTH);
1732 memcpy(mgmt->da, da, ETH_ALEN);
1733 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1734 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1735 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1736 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1737 mgmt->u.auth.status_code = cpu_to_le16(status);
1739 skb_put_data(skb, extra, extra_len);
1741 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1742 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1743 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1750 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1752 ieee80211_tx_skb(sdata, skb);
1755 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1756 const u8 *da, const u8 *bssid,
1757 u16 stype, u16 reason,
1758 bool send_frame, u8 *frame_buf)
1760 struct ieee80211_local *local = sdata->local;
1761 struct sk_buff *skb;
1762 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1765 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1766 mgmt->duration = 0; /* initialize only */
1767 mgmt->seq_ctrl = 0; /* initialize only */
1768 memcpy(mgmt->da, da, ETH_ALEN);
1769 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1770 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1771 /* u.deauth.reason_code == u.disassoc.reason_code */
1772 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1775 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1776 IEEE80211_DEAUTH_FRAME_LEN);
1780 skb_reserve(skb, local->hw.extra_tx_headroom);
1783 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1785 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1786 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1787 IEEE80211_SKB_CB(skb)->flags |=
1788 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1790 ieee80211_tx_skb(sdata, skb);
1794 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1796 if ((end - pos) < 5)
1799 *pos++ = WLAN_EID_EXTENSION;
1800 *pos++ = 1 + sizeof(cap);
1801 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1802 memcpy(pos, &cap, sizeof(cap));
1807 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1808 u8 *buffer, size_t buffer_len,
1809 const u8 *ie, size_t ie_len,
1810 enum nl80211_band band,
1812 struct cfg80211_chan_def *chandef,
1813 size_t *offset, u32 flags)
1815 struct ieee80211_local *local = sdata->local;
1816 struct ieee80211_supported_band *sband;
1817 const struct ieee80211_sta_he_cap *he_cap;
1818 const struct ieee80211_sta_eht_cap *eht_cap;
1819 u8 *pos = buffer, *end = buffer + buffer_len;
1821 int supp_rates_len, i;
1827 bool have_80mhz = false;
1831 sband = local->hw.wiphy->bands[band];
1832 if (WARN_ON_ONCE(!sband))
1835 rate_flags = ieee80211_chandef_rate_flags(chandef);
1836 shift = ieee80211_chandef_get_shift(chandef);
1839 for (i = 0; i < sband->n_bitrates; i++) {
1840 if ((BIT(i) & rate_mask) == 0)
1841 continue; /* skip rate */
1842 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1845 rates[num_rates++] =
1846 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1850 supp_rates_len = min_t(int, num_rates, 8);
1852 if (end - pos < 2 + supp_rates_len)
1854 *pos++ = WLAN_EID_SUPP_RATES;
1855 *pos++ = supp_rates_len;
1856 memcpy(pos, rates, supp_rates_len);
1857 pos += supp_rates_len;
1859 /* insert "request information" if in custom IEs */
1861 static const u8 before_extrates[] = {
1863 WLAN_EID_SUPP_RATES,
1866 noffset = ieee80211_ie_split(ie, ie_len,
1868 ARRAY_SIZE(before_extrates),
1870 if (end - pos < noffset - *offset)
1872 memcpy(pos, ie + *offset, noffset - *offset);
1873 pos += noffset - *offset;
1877 ext_rates_len = num_rates - supp_rates_len;
1878 if (ext_rates_len > 0) {
1879 if (end - pos < 2 + ext_rates_len)
1881 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1882 *pos++ = ext_rates_len;
1883 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1884 pos += ext_rates_len;
1887 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1890 *pos++ = WLAN_EID_DS_PARAMS;
1892 *pos++ = ieee80211_frequency_to_channel(
1893 chandef->chan->center_freq);
1896 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1899 /* insert custom IEs that go before HT */
1901 static const u8 before_ht[] = {
1903 * no need to list the ones split off already
1904 * (or generated here)
1907 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1909 noffset = ieee80211_ie_split(ie, ie_len,
1910 before_ht, ARRAY_SIZE(before_ht),
1912 if (end - pos < noffset - *offset)
1914 memcpy(pos, ie + *offset, noffset - *offset);
1915 pos += noffset - *offset;
1919 if (sband->ht_cap.ht_supported) {
1920 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1922 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1926 /* insert custom IEs that go before VHT */
1928 static const u8 before_vht[] = {
1930 * no need to list the ones split off already
1931 * (or generated here)
1933 WLAN_EID_BSS_COEX_2040,
1934 WLAN_EID_EXT_CAPABILITY,
1936 WLAN_EID_CHANNEL_USAGE,
1937 WLAN_EID_INTERWORKING,
1939 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1941 noffset = ieee80211_ie_split(ie, ie_len,
1942 before_vht, ARRAY_SIZE(before_vht),
1944 if (end - pos < noffset - *offset)
1946 memcpy(pos, ie + *offset, noffset - *offset);
1947 pos += noffset - *offset;
1951 /* Check if any channel in this sband supports at least 80 MHz */
1952 for (i = 0; i < sband->n_channels; i++) {
1953 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1954 IEEE80211_CHAN_NO_80MHZ))
1961 if (sband->vht_cap.vht_supported && have_80mhz) {
1962 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1964 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1965 sband->vht_cap.cap);
1968 /* insert custom IEs that go before HE */
1970 static const u8 before_he[] = {
1972 * no need to list the ones split off before VHT
1975 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1977 /* TODO: add 11ah/11aj/11ak elements */
1979 noffset = ieee80211_ie_split(ie, ie_len,
1980 before_he, ARRAY_SIZE(before_he),
1982 if (end - pos < noffset - *offset)
1984 memcpy(pos, ie + *offset, noffset - *offset);
1985 pos += noffset - *offset;
1989 he_cap = ieee80211_get_he_iftype_cap(sband,
1990 ieee80211_vif_type_p2p(&sdata->vif));
1992 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1993 IEEE80211_CHAN_NO_HE)) {
1994 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
1999 eht_cap = ieee80211_get_eht_iftype_cap(sband,
2000 ieee80211_vif_type_p2p(&sdata->vif));
2003 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2004 IEEE80211_CHAN_NO_HE |
2005 IEEE80211_CHAN_NO_EHT)) {
2006 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end);
2011 if (cfg80211_any_usable_channels(local->hw.wiphy,
2012 BIT(NL80211_BAND_6GHZ),
2013 IEEE80211_CHAN_NO_HE)) {
2014 struct ieee80211_supported_band *sband6;
2016 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2017 he_cap = ieee80211_get_he_iftype_cap(sband6,
2018 ieee80211_vif_type_p2p(&sdata->vif));
2021 enum nl80211_iftype iftype =
2022 ieee80211_vif_type_p2p(&sdata->vif);
2023 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
2025 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2030 * If adding more here, adjust code in main.c
2031 * that calculates local->scan_ies_len.
2034 return pos - buffer;
2036 WARN_ONCE(1, "not enough space for preq IEs\n");
2038 return pos - buffer;
2041 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2043 struct ieee80211_scan_ies *ie_desc,
2044 const u8 *ie, size_t ie_len,
2045 u8 bands_used, u32 *rate_masks,
2046 struct cfg80211_chan_def *chandef,
2049 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2052 memset(ie_desc, 0, sizeof(*ie_desc));
2054 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2055 if (bands_used & BIT(i)) {
2056 pos += ieee80211_build_preq_ies_band(sdata,
2064 ie_desc->ies[i] = buffer + old_pos;
2065 ie_desc->len[i] = pos - old_pos;
2070 /* add any remaining custom IEs */
2072 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2073 "not enough space for preq custom IEs\n"))
2075 memcpy(buffer + pos, ie + custom_ie_offset,
2076 ie_len - custom_ie_offset);
2077 ie_desc->common_ies = buffer + pos;
2078 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2079 pos += ie_len - custom_ie_offset;
2085 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2086 const u8 *src, const u8 *dst,
2088 struct ieee80211_channel *chan,
2089 const u8 *ssid, size_t ssid_len,
2090 const u8 *ie, size_t ie_len,
2093 struct ieee80211_local *local = sdata->local;
2094 struct cfg80211_chan_def chandef;
2095 struct sk_buff *skb;
2096 struct ieee80211_mgmt *mgmt;
2098 u32 rate_masks[NUM_NL80211_BANDS] = {};
2099 struct ieee80211_scan_ies dummy_ie_desc;
2102 * Do not send DS Channel parameter for directed probe requests
2103 * in order to maximize the chance that we get a response. Some
2104 * badly-behaved APs don't respond when this parameter is included.
2106 chandef.width = sdata->vif.bss_conf.chandef.width;
2107 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2108 chandef.chan = NULL;
2110 chandef.chan = chan;
2112 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2113 local->scan_ies_len + ie_len);
2117 rate_masks[chan->band] = ratemask;
2118 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2119 skb_tailroom(skb), &dummy_ie_desc,
2120 ie, ie_len, BIT(chan->band),
2121 rate_masks, &chandef, flags);
2122 skb_put(skb, ies_len);
2125 mgmt = (struct ieee80211_mgmt *) skb->data;
2126 memcpy(mgmt->da, dst, ETH_ALEN);
2127 memcpy(mgmt->bssid, dst, ETH_ALEN);
2130 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2135 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2136 struct ieee802_11_elems *elems,
2137 enum nl80211_band band, u32 *basic_rates)
2139 struct ieee80211_supported_band *sband;
2141 u32 supp_rates, rate_flags;
2144 sband = sdata->local->hw.wiphy->bands[band];
2145 if (WARN_ON(!sband))
2148 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2149 shift = ieee80211_vif_get_shift(&sdata->vif);
2151 num_rates = sband->n_bitrates;
2153 for (i = 0; i < elems->supp_rates_len +
2154 elems->ext_supp_rates_len; i++) {
2158 if (i < elems->supp_rates_len)
2159 rate = elems->supp_rates[i];
2160 else if (elems->ext_supp_rates)
2161 rate = elems->ext_supp_rates
2162 [i - elems->supp_rates_len];
2163 own_rate = 5 * (rate & 0x7f);
2164 is_basic = !!(rate & 0x80);
2166 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2169 for (j = 0; j < num_rates; j++) {
2171 if ((rate_flags & sband->bitrates[j].flags)
2175 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2178 if (brate == own_rate) {
2179 supp_rates |= BIT(j);
2180 if (basic_rates && is_basic)
2181 *basic_rates |= BIT(j);
2188 void ieee80211_stop_device(struct ieee80211_local *local)
2190 ieee80211_led_radio(local, false);
2191 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2193 cancel_work_sync(&local->reconfig_filter);
2195 flush_workqueue(local->workqueue);
2199 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2202 /* It's possible that we don't handle the scan completion in
2203 * time during suspend, so if it's still marked as completed
2204 * here, queue the work and flush it to clean things up.
2205 * Instead of calling the worker function directly here, we
2206 * really queue it to avoid potential races with other flows
2207 * scheduling the same work.
2209 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2210 /* If coming from reconfiguration failure, abort the scan so
2211 * we don't attempt to continue a partial HW scan - which is
2212 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2213 * completed scan, and a 5 GHz portion is still pending.
2216 set_bit(SCAN_ABORTED, &local->scanning);
2217 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2218 flush_delayed_work(&local->scan_work);
2222 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2224 struct ieee80211_sub_if_data *sdata;
2225 struct ieee80211_chanctx *ctx;
2228 * We get here if during resume the device can't be restarted properly.
2229 * We might also get here if this happens during HW reset, which is a
2230 * slightly different situation and we need to drop all connections in
2233 * Ask cfg80211 to turn off all interfaces, this will result in more
2234 * warnings but at least we'll then get into a clean stopped state.
2237 local->resuming = false;
2238 local->suspended = false;
2239 local->in_reconfig = false;
2241 ieee80211_flush_completed_scan(local, true);
2243 /* scheduled scan clearly can't be running any more, but tell
2244 * cfg80211 and clear local state
2246 ieee80211_sched_scan_end(local);
2248 list_for_each_entry(sdata, &local->interfaces, list)
2249 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2251 /* Mark channel contexts as not being in the driver any more to avoid
2252 * removing them from the driver during the shutdown process...
2254 mutex_lock(&local->chanctx_mtx);
2255 list_for_each_entry(ctx, &local->chanctx_list, list)
2256 ctx->driver_present = false;
2257 mutex_unlock(&local->chanctx_mtx);
2260 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2261 struct ieee80211_sub_if_data *sdata)
2263 struct ieee80211_chanctx_conf *conf;
2264 struct ieee80211_chanctx *ctx;
2266 if (!local->use_chanctx)
2269 mutex_lock(&local->chanctx_mtx);
2270 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2271 lockdep_is_held(&local->chanctx_mtx));
2273 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2274 drv_assign_vif_chanctx(local, sdata, ctx);
2276 mutex_unlock(&local->chanctx_mtx);
2279 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2281 struct ieee80211_local *local = sdata->local;
2282 struct sta_info *sta;
2285 mutex_lock(&local->sta_mtx);
2286 list_for_each_entry(sta, &local->sta_list, list) {
2287 enum ieee80211_sta_state state;
2289 if (!sta->uploaded || sta->sdata != sdata)
2292 for (state = IEEE80211_STA_NOTEXIST;
2293 state < sta->sta_state; state++)
2294 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2297 mutex_unlock(&local->sta_mtx);
2300 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2302 struct cfg80211_nan_func *func, **funcs;
2305 res = drv_start_nan(sdata->local, sdata,
2306 &sdata->u.nan.conf);
2310 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2316 /* Add all the functions:
2317 * This is a little bit ugly. We need to call a potentially sleeping
2318 * callback for each NAN function, so we can't hold the spinlock.
2320 spin_lock_bh(&sdata->u.nan.func_lock);
2322 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2325 spin_unlock_bh(&sdata->u.nan.func_lock);
2327 for (i = 0; funcs[i]; i++) {
2328 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2330 ieee80211_nan_func_terminated(&sdata->vif,
2331 funcs[i]->instance_id,
2332 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2341 int ieee80211_reconfig(struct ieee80211_local *local)
2343 struct ieee80211_hw *hw = &local->hw;
2344 struct ieee80211_sub_if_data *sdata;
2345 struct ieee80211_chanctx *ctx;
2346 struct sta_info *sta;
2348 bool reconfig_due_to_wowlan = false;
2349 struct ieee80211_sub_if_data *sched_scan_sdata;
2350 struct cfg80211_sched_scan_request *sched_scan_req;
2351 bool sched_scan_stopped = false;
2352 bool suspended = local->suspended;
2353 bool in_reconfig = false;
2355 /* nothing to do if HW shouldn't run */
2356 if (!local->open_count)
2361 local->resuming = true;
2363 if (local->wowlan) {
2365 * In the wowlan case, both mac80211 and the device
2366 * are functional when the resume op is called, so
2367 * clear local->suspended so the device could operate
2368 * normally (e.g. pass rx frames).
2370 local->suspended = false;
2371 res = drv_resume(local);
2372 local->wowlan = false;
2374 local->resuming = false;
2381 * res is 1, which means the driver requested
2382 * to go through a regular reset on wakeup.
2383 * restore local->suspended in this case.
2385 reconfig_due_to_wowlan = true;
2386 local->suspended = true;
2391 * In case of hw_restart during suspend (without wowlan),
2392 * cancel restart work, as we are reconfiguring the device
2394 * Note that restart_work is scheduled on a frozen workqueue,
2395 * so we can't deadlock in this case.
2397 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2398 cancel_work_sync(&local->restart_work);
2400 local->started = false;
2403 * Upon resume hardware can sometimes be goofy due to
2404 * various platform / driver / bus issues, so restarting
2405 * the device may at times not work immediately. Propagate
2408 res = drv_start(local);
2411 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2413 WARN(1, "Hardware became unavailable during restart.\n");
2414 ieee80211_handle_reconfig_failure(local);
2418 /* setup fragmentation threshold */
2419 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2421 /* setup RTS threshold */
2422 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2424 /* reset coverage class */
2425 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2427 ieee80211_led_radio(local, true);
2428 ieee80211_mod_tpt_led_trig(local,
2429 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2431 /* add interfaces */
2432 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2434 /* in HW restart it exists already */
2435 WARN_ON(local->resuming);
2436 res = drv_add_interface(local, sdata);
2438 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2444 list_for_each_entry(sdata, &local->interfaces, list) {
2445 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2446 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2447 ieee80211_sdata_running(sdata)) {
2448 res = drv_add_interface(local, sdata);
2454 /* If adding any of the interfaces failed above, roll back and
2458 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2460 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2461 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2462 ieee80211_sdata_running(sdata))
2463 drv_remove_interface(local, sdata);
2464 ieee80211_handle_reconfig_failure(local);
2468 /* add channel contexts */
2469 if (local->use_chanctx) {
2470 mutex_lock(&local->chanctx_mtx);
2471 list_for_each_entry(ctx, &local->chanctx_list, list)
2472 if (ctx->replace_state !=
2473 IEEE80211_CHANCTX_REPLACES_OTHER)
2474 WARN_ON(drv_add_chanctx(local, ctx));
2475 mutex_unlock(&local->chanctx_mtx);
2477 sdata = wiphy_dereference(local->hw.wiphy,
2478 local->monitor_sdata);
2479 if (sdata && ieee80211_sdata_running(sdata))
2480 ieee80211_assign_chanctx(local, sdata);
2483 /* reconfigure hardware */
2484 ieee80211_hw_config(local, ~0);
2486 ieee80211_configure_filter(local);
2488 /* Finally also reconfigure all the BSS information */
2489 list_for_each_entry(sdata, &local->interfaces, list) {
2492 if (!ieee80211_sdata_running(sdata))
2495 ieee80211_assign_chanctx(local, sdata);
2497 switch (sdata->vif.type) {
2498 case NL80211_IFTYPE_AP_VLAN:
2499 case NL80211_IFTYPE_MONITOR:
2501 case NL80211_IFTYPE_ADHOC:
2502 if (sdata->vif.bss_conf.ibss_joined)
2503 WARN_ON(drv_join_ibss(local, sdata));
2506 ieee80211_reconfig_stations(sdata);
2508 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2509 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2510 drv_conf_tx(local, sdata, i,
2511 &sdata->tx_conf[i]);
2515 /* common change flags for all interface types */
2516 changed = BSS_CHANGED_ERP_CTS_PROT |
2517 BSS_CHANGED_ERP_PREAMBLE |
2518 BSS_CHANGED_ERP_SLOT |
2520 BSS_CHANGED_BASIC_RATES |
2521 BSS_CHANGED_BEACON_INT |
2526 BSS_CHANGED_TXPOWER |
2527 BSS_CHANGED_MCAST_RATE;
2529 if (sdata->vif.mu_mimo_owner)
2530 changed |= BSS_CHANGED_MU_GROUPS;
2532 switch (sdata->vif.type) {
2533 case NL80211_IFTYPE_STATION:
2534 changed |= BSS_CHANGED_ASSOC |
2535 BSS_CHANGED_ARP_FILTER |
2538 /* Re-send beacon info report to the driver */
2539 if (sdata->u.mgd.have_beacon)
2540 changed |= BSS_CHANGED_BEACON_INFO;
2542 if (sdata->vif.bss_conf.max_idle_period ||
2543 sdata->vif.bss_conf.protected_keep_alive)
2544 changed |= BSS_CHANGED_KEEP_ALIVE;
2547 ieee80211_bss_info_change_notify(sdata, changed);
2548 sdata_unlock(sdata);
2550 case NL80211_IFTYPE_OCB:
2551 changed |= BSS_CHANGED_OCB;
2552 ieee80211_bss_info_change_notify(sdata, changed);
2554 case NL80211_IFTYPE_ADHOC:
2555 changed |= BSS_CHANGED_IBSS;
2557 case NL80211_IFTYPE_AP:
2558 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2560 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2561 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2562 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2563 changed |= BSS_CHANGED_FTM_RESPONDER;
2565 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2566 changed |= BSS_CHANGED_AP_PROBE_RESP;
2568 if (rcu_access_pointer(sdata->u.ap.beacon))
2569 drv_start_ap(local, sdata);
2572 case NL80211_IFTYPE_MESH_POINT:
2573 if (sdata->vif.bss_conf.enable_beacon) {
2574 changed |= BSS_CHANGED_BEACON |
2575 BSS_CHANGED_BEACON_ENABLED;
2576 ieee80211_bss_info_change_notify(sdata, changed);
2579 case NL80211_IFTYPE_NAN:
2580 res = ieee80211_reconfig_nan(sdata);
2582 ieee80211_handle_reconfig_failure(local);
2586 case NL80211_IFTYPE_AP_VLAN:
2587 case NL80211_IFTYPE_MONITOR:
2588 case NL80211_IFTYPE_P2P_DEVICE:
2591 case NL80211_IFTYPE_UNSPECIFIED:
2592 case NUM_NL80211_IFTYPES:
2593 case NL80211_IFTYPE_P2P_CLIENT:
2594 case NL80211_IFTYPE_P2P_GO:
2595 case NL80211_IFTYPE_WDS:
2601 ieee80211_recalc_ps(local);
2604 * The sta might be in psm against the ap (e.g. because
2605 * this was the state before a hw restart), so we
2606 * explicitly send a null packet in order to make sure
2607 * it'll sync against the ap (and get out of psm).
2609 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2610 list_for_each_entry(sdata, &local->interfaces, list) {
2611 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2613 if (!sdata->u.mgd.associated)
2616 ieee80211_send_nullfunc(local, sdata, false);
2620 /* APs are now beaconing, add back stations */
2621 mutex_lock(&local->sta_mtx);
2622 list_for_each_entry(sta, &local->sta_list, list) {
2623 enum ieee80211_sta_state state;
2628 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2629 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2632 for (state = IEEE80211_STA_NOTEXIST;
2633 state < sta->sta_state; state++)
2634 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2637 mutex_unlock(&local->sta_mtx);
2640 list_for_each_entry(sdata, &local->interfaces, list)
2641 ieee80211_reenable_keys(sdata);
2643 /* Reconfigure sched scan if it was interrupted by FW restart */
2644 mutex_lock(&local->mtx);
2645 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2646 lockdep_is_held(&local->mtx));
2647 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2648 lockdep_is_held(&local->mtx));
2649 if (sched_scan_sdata && sched_scan_req)
2651 * Sched scan stopped, but we don't want to report it. Instead,
2652 * we're trying to reschedule. However, if more than one scan
2653 * plan was set, we cannot reschedule since we don't know which
2654 * scan plan was currently running (and some scan plans may have
2655 * already finished).
2657 if (sched_scan_req->n_scan_plans > 1 ||
2658 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2660 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2661 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2662 sched_scan_stopped = true;
2664 mutex_unlock(&local->mtx);
2666 if (sched_scan_stopped)
2667 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2671 if (local->monitors == local->open_count && local->monitors > 0)
2672 ieee80211_add_virtual_monitor(local);
2675 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2676 * sessions can be established after a resume.
2678 * Also tear down aggregation sessions since reconfiguring
2679 * them in a hardware restart scenario is not easily done
2680 * right now, and the hardware will have lost information
2681 * about the sessions, but we and the AP still think they
2682 * are active. This is really a workaround though.
2684 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2685 mutex_lock(&local->sta_mtx);
2687 list_for_each_entry(sta, &local->sta_list, list) {
2688 if (!local->resuming)
2689 ieee80211_sta_tear_down_BA_sessions(
2690 sta, AGG_STOP_LOCAL_REQUEST);
2691 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2694 mutex_unlock(&local->sta_mtx);
2698 * If this is for hw restart things are still running.
2699 * We may want to change that later, however.
2701 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2702 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2704 if (local->in_reconfig) {
2705 in_reconfig = local->in_reconfig;
2706 local->in_reconfig = false;
2709 /* Restart deferred ROCs */
2710 mutex_lock(&local->mtx);
2711 ieee80211_start_next_roc(local);
2712 mutex_unlock(&local->mtx);
2714 /* Requeue all works */
2715 list_for_each_entry(sdata, &local->interfaces, list)
2716 ieee80211_queue_work(&local->hw, &sdata->work);
2719 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2720 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2724 list_for_each_entry(sdata, &local->interfaces, list) {
2725 if (!ieee80211_sdata_running(sdata))
2727 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2728 ieee80211_sta_restart(sdata);
2736 /* first set suspended false, then resuming */
2737 local->suspended = false;
2739 local->resuming = false;
2741 ieee80211_flush_completed_scan(local, false);
2743 if (local->open_count && !reconfig_due_to_wowlan)
2744 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2746 list_for_each_entry(sdata, &local->interfaces, list) {
2747 if (!ieee80211_sdata_running(sdata))
2749 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2750 ieee80211_sta_restart(sdata);
2753 mod_timer(&local->sta_cleanup, jiffies + 1);
2761 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2763 struct ieee80211_sub_if_data *sdata;
2764 struct ieee80211_local *local;
2765 struct ieee80211_key *key;
2770 sdata = vif_to_sdata(vif);
2771 local = sdata->local;
2773 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2777 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2778 !local->in_reconfig))
2781 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2784 sdata->flags |= flag;
2786 mutex_lock(&local->key_mtx);
2787 list_for_each_entry(key, &sdata->key_list, list)
2788 key->flags |= KEY_FLAG_TAINTED;
2789 mutex_unlock(&local->key_mtx);
2792 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2794 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2796 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2798 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2800 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2802 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2804 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2806 struct ieee80211_local *local = sdata->local;
2807 struct ieee80211_chanctx_conf *chanctx_conf;
2808 struct ieee80211_chanctx *chanctx;
2810 mutex_lock(&local->chanctx_mtx);
2812 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2813 lockdep_is_held(&local->chanctx_mtx));
2816 * This function can be called from a work, thus it may be possible
2817 * that the chanctx_conf is removed (due to a disconnection, for
2819 * So nothing should be done in such case.
2824 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2825 ieee80211_recalc_smps_chanctx(local, chanctx);
2827 mutex_unlock(&local->chanctx_mtx);
2830 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2832 struct ieee80211_local *local = sdata->local;
2833 struct ieee80211_chanctx_conf *chanctx_conf;
2834 struct ieee80211_chanctx *chanctx;
2836 mutex_lock(&local->chanctx_mtx);
2838 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2839 lockdep_is_held(&local->chanctx_mtx));
2841 if (WARN_ON_ONCE(!chanctx_conf))
2844 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2845 ieee80211_recalc_chanctx_min_def(local, chanctx);
2847 mutex_unlock(&local->chanctx_mtx);
2850 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2852 size_t pos = offset;
2854 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2855 pos += 2 + ies[pos + 1];
2860 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2865 *pos++ = WLAN_EID_HT_CAPABILITY;
2866 *pos++ = sizeof(struct ieee80211_ht_cap);
2867 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2869 /* capability flags */
2870 tmp = cpu_to_le16(cap);
2871 memcpy(pos, &tmp, sizeof(u16));
2874 /* AMPDU parameters */
2875 *pos++ = ht_cap->ampdu_factor |
2876 (ht_cap->ampdu_density <<
2877 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2880 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2881 pos += sizeof(ht_cap->mcs);
2883 /* extended capabilities */
2884 pos += sizeof(__le16);
2886 /* BF capabilities */
2887 pos += sizeof(__le32);
2889 /* antenna selection */
2895 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2900 *pos++ = WLAN_EID_VHT_CAPABILITY;
2901 *pos++ = sizeof(struct ieee80211_vht_cap);
2902 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2904 /* capability flags */
2905 tmp = cpu_to_le32(cap);
2906 memcpy(pos, &tmp, sizeof(u32));
2910 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2911 pos += sizeof(vht_cap->vht_mcs);
2916 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2918 const struct ieee80211_sta_he_cap *he_cap;
2919 struct ieee80211_supported_band *sband;
2922 sband = ieee80211_get_sband(sdata);
2926 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2930 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2932 sizeof(he_cap->he_cap_elem) + n +
2933 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2934 he_cap->he_cap_elem.phy_cap_info);
2937 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos,
2938 const struct ieee80211_sta_he_cap *he_cap,
2941 struct ieee80211_he_cap_elem elem;
2946 /* Make sure we have place for the IE */
2948 * TODO: the 1 added is because this temporarily is under the EXTENSION
2949 * IE. Get rid of it when it moves.
2954 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
2955 elem = he_cap->he_cap_elem;
2957 if (disable_flags & IEEE80211_STA_DISABLE_40MHZ)
2958 elem.phy_cap_info[0] &=
2959 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2960 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
2962 if (disable_flags & IEEE80211_STA_DISABLE_160MHZ)
2963 elem.phy_cap_info[0] &=
2964 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
2966 if (disable_flags & IEEE80211_STA_DISABLE_80P80MHZ)
2967 elem.phy_cap_info[0] &=
2968 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
2970 n = ieee80211_he_mcs_nss_size(&elem);
2972 sizeof(he_cap->he_cap_elem) + n +
2973 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2974 he_cap->he_cap_elem.phy_cap_info);
2976 if ((end - pos) < ie_len)
2979 *pos++ = WLAN_EID_EXTENSION;
2980 pos++; /* We'll set the size later below */
2981 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2984 memcpy(pos, &elem, sizeof(elem));
2985 pos += sizeof(elem);
2987 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2990 /* Check if PPE Threshold should be present */
2991 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2992 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2996 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2997 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2999 n = hweight8(he_cap->ppe_thres[0] &
3000 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3001 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3002 IEEE80211_PPE_THRES_NSS_POS));
3005 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3008 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3009 n = DIV_ROUND_UP(n, 8);
3011 /* Copy PPE Thresholds */
3012 memcpy(pos, &he_cap->ppe_thres, n);
3016 orig_pos[1] = (pos - orig_pos) - 2;
3020 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3021 struct sk_buff *skb)
3023 struct ieee80211_supported_band *sband;
3024 const struct ieee80211_sband_iftype_data *iftd;
3025 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3029 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3030 BIT(NL80211_BAND_6GHZ),
3031 IEEE80211_CHAN_NO_HE))
3034 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3036 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3040 /* Check for device HE 6 GHz capability before adding element */
3041 if (!iftd->he_6ghz_capa.capa)
3044 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3045 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3047 switch (sdata->smps_mode) {
3048 case IEEE80211_SMPS_AUTOMATIC:
3049 case IEEE80211_SMPS_NUM_MODES:
3052 case IEEE80211_SMPS_OFF:
3053 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3054 IEEE80211_HE_6GHZ_CAP_SM_PS);
3056 case IEEE80211_SMPS_STATIC:
3057 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3058 IEEE80211_HE_6GHZ_CAP_SM_PS);
3060 case IEEE80211_SMPS_DYNAMIC:
3061 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3062 IEEE80211_HE_6GHZ_CAP_SM_PS);
3066 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3067 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3068 pos + 2 + 1 + sizeof(cap));
3071 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3072 const struct cfg80211_chan_def *chandef,
3073 u16 prot_mode, bool rifs_mode)
3075 struct ieee80211_ht_operation *ht_oper;
3076 /* Build HT Information */
3077 *pos++ = WLAN_EID_HT_OPERATION;
3078 *pos++ = sizeof(struct ieee80211_ht_operation);
3079 ht_oper = (struct ieee80211_ht_operation *)pos;
3080 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3081 chandef->chan->center_freq);
3082 switch (chandef->width) {
3083 case NL80211_CHAN_WIDTH_160:
3084 case NL80211_CHAN_WIDTH_80P80:
3085 case NL80211_CHAN_WIDTH_80:
3086 case NL80211_CHAN_WIDTH_40:
3087 if (chandef->center_freq1 > chandef->chan->center_freq)
3088 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3090 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3092 case NL80211_CHAN_WIDTH_320:
3093 /* HT information element should not be included on 6GHz */
3097 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3100 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3101 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3102 chandef->width != NL80211_CHAN_WIDTH_20)
3103 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3106 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3108 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3109 ht_oper->stbc_param = 0x0000;
3111 /* It seems that Basic MCS set and Supported MCS set
3112 are identical for the first 10 bytes */
3113 memset(&ht_oper->basic_set, 0, 16);
3114 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3116 return pos + sizeof(struct ieee80211_ht_operation);
3119 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3120 const struct cfg80211_chan_def *chandef)
3122 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3123 *pos++ = 3; /* IE length */
3124 /* New channel width */
3125 switch (chandef->width) {
3126 case NL80211_CHAN_WIDTH_80:
3127 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3129 case NL80211_CHAN_WIDTH_160:
3130 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3132 case NL80211_CHAN_WIDTH_80P80:
3133 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3135 case NL80211_CHAN_WIDTH_320:
3136 /* The behavior is not defined for 320 MHz channels */
3140 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3143 /* new center frequency segment 0 */
3144 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3145 /* new center frequency segment 1 */
3146 if (chandef->center_freq2)
3147 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3152 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3153 const struct cfg80211_chan_def *chandef)
3155 struct ieee80211_vht_operation *vht_oper;
3157 *pos++ = WLAN_EID_VHT_OPERATION;
3158 *pos++ = sizeof(struct ieee80211_vht_operation);
3159 vht_oper = (struct ieee80211_vht_operation *)pos;
3160 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3161 chandef->center_freq1);
3162 if (chandef->center_freq2)
3163 vht_oper->center_freq_seg1_idx =
3164 ieee80211_frequency_to_channel(chandef->center_freq2);
3166 vht_oper->center_freq_seg1_idx = 0x00;
3168 switch (chandef->width) {
3169 case NL80211_CHAN_WIDTH_160:
3171 * Convert 160 MHz channel width to new style as interop
3174 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3175 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3176 if (chandef->chan->center_freq < chandef->center_freq1)
3177 vht_oper->center_freq_seg0_idx -= 8;
3179 vht_oper->center_freq_seg0_idx += 8;
3181 case NL80211_CHAN_WIDTH_80P80:
3183 * Convert 80+80 MHz channel width to new style as interop
3186 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3188 case NL80211_CHAN_WIDTH_80:
3189 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3191 case NL80211_CHAN_WIDTH_320:
3192 /* VHT information element should not be included on 6GHz */
3196 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3200 /* don't require special VHT peer rates */
3201 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3203 return pos + sizeof(struct ieee80211_vht_operation);
3206 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3208 struct ieee80211_he_operation *he_oper;
3209 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3211 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3213 if (chandef->chan->band == NL80211_BAND_6GHZ)
3214 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3216 *pos++ = WLAN_EID_EXTENSION;
3218 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3221 he_oper_params |= u32_encode_bits(1023, /* disabled */
3222 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3223 he_oper_params |= u32_encode_bits(1,
3224 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3225 he_oper_params |= u32_encode_bits(1,
3226 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3227 if (chandef->chan->band == NL80211_BAND_6GHZ)
3228 he_oper_params |= u32_encode_bits(1,
3229 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3231 he_oper = (struct ieee80211_he_operation *)pos;
3232 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3234 /* don't require special HE peer rates */
3235 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3236 pos += sizeof(struct ieee80211_he_operation);
3238 if (chandef->chan->band != NL80211_BAND_6GHZ)
3241 /* TODO add VHT operational */
3242 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3243 he_6ghz_op->minrate = 6; /* 6 Mbps */
3244 he_6ghz_op->primary =
3245 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3247 ieee80211_frequency_to_channel(chandef->center_freq1);
3248 if (chandef->center_freq2)
3250 ieee80211_frequency_to_channel(chandef->center_freq2);
3252 he_6ghz_op->ccfs1 = 0;
3254 switch (chandef->width) {
3255 case NL80211_CHAN_WIDTH_320:
3257 * TODO: mesh operation is not defined over 6GHz 320 MHz
3262 case NL80211_CHAN_WIDTH_160:
3263 /* Convert 160 MHz channel width to new style as interop
3266 he_6ghz_op->control =
3267 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3268 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3269 if (chandef->chan->center_freq < chandef->center_freq1)
3270 he_6ghz_op->ccfs0 -= 8;
3272 he_6ghz_op->ccfs0 += 8;
3274 case NL80211_CHAN_WIDTH_80P80:
3275 he_6ghz_op->control =
3276 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3278 case NL80211_CHAN_WIDTH_80:
3279 he_6ghz_op->control =
3280 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3282 case NL80211_CHAN_WIDTH_40:
3283 he_6ghz_op->control =
3284 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3287 he_6ghz_op->control =
3288 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3292 pos += sizeof(struct ieee80211_he_6ghz_oper);
3298 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3299 struct cfg80211_chan_def *chandef)
3301 enum nl80211_channel_type channel_type;
3306 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3307 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3308 channel_type = NL80211_CHAN_HT20;
3310 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3311 channel_type = NL80211_CHAN_HT40PLUS;
3313 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3314 channel_type = NL80211_CHAN_HT40MINUS;
3320 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3324 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3325 const struct ieee80211_vht_operation *oper,
3326 const struct ieee80211_ht_operation *htop,
3327 struct cfg80211_chan_def *chandef)
3329 struct cfg80211_chan_def new = *chandef;
3331 int ccfs0, ccfs1, ccfs2;
3334 bool support_80_80 = false;
3335 bool support_160 = false;
3336 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3337 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3338 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3339 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3344 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3345 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3346 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3347 support_80_80 = ((vht_cap &
3348 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3349 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3350 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3351 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3352 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3353 ccfs0 = oper->center_freq_seg0_idx;
3354 ccfs1 = oper->center_freq_seg1_idx;
3355 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3356 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3357 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3361 /* if not supported, parse as though we didn't understand it */
3362 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3363 ext_nss_bw_supp = 0;
3366 * Cf. IEEE 802.11 Table 9-250
3368 * We really just consider that because it's inefficient to connect
3369 * at a higher bandwidth than we'll actually be able to use.
3371 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3375 support_160 = false;
3376 support_80_80 = false;
3379 support_80_80 = false;
3402 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3403 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3405 switch (oper->chan_width) {
3406 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3407 /* just use HT information directly */
3409 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3410 new.width = NL80211_CHAN_WIDTH_80;
3411 new.center_freq1 = cf0;
3412 /* If needed, adjust based on the newer interop workaround. */
3416 diff = abs(ccf1 - ccf0);
3417 if ((diff == 8) && support_160) {
3418 new.width = NL80211_CHAN_WIDTH_160;
3419 new.center_freq1 = cf1;
3420 } else if ((diff > 8) && support_80_80) {
3421 new.width = NL80211_CHAN_WIDTH_80P80;
3422 new.center_freq2 = cf1;
3426 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3427 /* deprecated encoding */
3428 new.width = NL80211_CHAN_WIDTH_160;
3429 new.center_freq1 = cf0;
3431 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3432 /* deprecated encoding */
3433 new.width = NL80211_CHAN_WIDTH_80P80;
3434 new.center_freq1 = cf0;
3435 new.center_freq2 = cf1;
3441 if (!cfg80211_chandef_valid(&new))
3448 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3449 const struct ieee80211_he_operation *he_oper,
3450 const struct ieee80211_eht_operation *eht_oper,
3451 struct cfg80211_chan_def *chandef)
3453 struct ieee80211_local *local = sdata->local;
3454 struct ieee80211_supported_band *sband;
3455 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3456 const struct ieee80211_sta_he_cap *he_cap;
3457 const struct ieee80211_sta_eht_cap *eht_cap;
3458 struct cfg80211_chan_def he_chandef = *chandef;
3459 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3460 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3461 bool support_80_80, support_160, support_320;
3462 u8 he_phy_cap, eht_phy_cap;
3465 if (chandef->chan->band != NL80211_BAND_6GHZ)
3468 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3470 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3472 sdata_info(sdata, "Missing iftype sband data/HE cap");
3476 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3479 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3482 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3486 "HE is not advertised on (on %d MHz), expect issues\n",
3487 chandef->chan->center_freq);
3491 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3493 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3497 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3499 if (!he_6ghz_oper) {
3501 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3502 chandef->chan->center_freq);
3507 * The EHT operation IE does not contain the primary channel so the
3508 * primary channel frequency should be taken from the 6 GHz operation
3511 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3513 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3515 switch (u8_get_bits(he_6ghz_oper->control,
3516 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3517 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3518 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3520 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3521 bss_conf->power_type = IEEE80211_REG_SP_AP;
3524 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3529 switch (u8_get_bits(he_6ghz_oper->control,
3530 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3531 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3532 he_chandef.width = NL80211_CHAN_WIDTH_20;
3534 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3535 he_chandef.width = NL80211_CHAN_WIDTH_40;
3537 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3538 he_chandef.width = NL80211_CHAN_WIDTH_80;
3540 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3541 he_chandef.width = NL80211_CHAN_WIDTH_80;
3542 if (!he_6ghz_oper->ccfs1)
3544 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3546 he_chandef.width = NL80211_CHAN_WIDTH_160;
3549 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3554 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3555 he_chandef.center_freq1 =
3556 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3559 he_chandef.center_freq1 =
3560 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3562 if (support_80_80 || support_160)
3563 he_chandef.center_freq2 =
3564 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3568 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3570 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3572 switch (u8_get_bits(eht_oper->chan_width,
3573 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3574 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3575 he_chandef.width = NL80211_CHAN_WIDTH_20;
3577 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3578 he_chandef.width = NL80211_CHAN_WIDTH_40;
3580 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3581 he_chandef.width = NL80211_CHAN_WIDTH_80;
3583 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3585 he_chandef.width = NL80211_CHAN_WIDTH_160;
3587 he_chandef.width = NL80211_CHAN_WIDTH_80;
3589 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3591 he_chandef.width = NL80211_CHAN_WIDTH_320;
3592 else if (support_160)
3593 he_chandef.width = NL80211_CHAN_WIDTH_160;
3595 he_chandef.width = NL80211_CHAN_WIDTH_80;
3599 he_chandef.center_freq1 =
3600 ieee80211_channel_to_frequency(eht_oper->ccfs,
3604 if (!cfg80211_chandef_valid(&he_chandef)) {
3606 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3607 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3609 he_chandef.center_freq1,
3610 he_chandef.center_freq2);
3614 *chandef = he_chandef;
3619 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3620 struct cfg80211_chan_def *chandef)
3627 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3628 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3629 chandef->width = NL80211_CHAN_WIDTH_1;
3631 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3632 chandef->width = NL80211_CHAN_WIDTH_2;
3634 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3635 chandef->width = NL80211_CHAN_WIDTH_4;
3637 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3638 chandef->width = NL80211_CHAN_WIDTH_8;
3640 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3641 chandef->width = NL80211_CHAN_WIDTH_16;
3647 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3648 NL80211_BAND_S1GHZ);
3649 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3650 chandef->freq1_offset = oper_freq % 1000;
3655 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3656 const struct ieee80211_supported_band *sband,
3657 const u8 *srates, int srates_len, u32 *rates)
3659 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3660 int shift = ieee80211_chandef_get_shift(chandef);
3661 struct ieee80211_rate *br;
3662 int brate, rate, i, j, count = 0;
3666 for (i = 0; i < srates_len; i++) {
3667 rate = srates[i] & 0x7f;
3669 for (j = 0; j < sband->n_bitrates; j++) {
3670 br = &sband->bitrates[j];
3671 if ((rate_flags & br->flags) != rate_flags)
3674 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3675 if (brate == rate) {
3685 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3686 struct sk_buff *skb, bool need_basic,
3687 enum nl80211_band band)
3689 struct ieee80211_local *local = sdata->local;
3690 struct ieee80211_supported_band *sband;
3693 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3696 shift = ieee80211_vif_get_shift(&sdata->vif);
3697 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3698 sband = local->hw.wiphy->bands[band];
3700 for (i = 0; i < sband->n_bitrates; i++) {
3701 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3708 if (skb_tailroom(skb) < rates + 2)
3711 pos = skb_put(skb, rates + 2);
3712 *pos++ = WLAN_EID_SUPP_RATES;
3714 for (i = 0; i < rates; i++) {
3716 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3719 if (need_basic && basic_rates & BIT(i))
3721 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3723 *pos++ = basic | (u8) rate;
3729 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3730 struct sk_buff *skb, bool need_basic,
3731 enum nl80211_band band)
3733 struct ieee80211_local *local = sdata->local;
3734 struct ieee80211_supported_band *sband;
3736 u8 i, exrates, *pos;
3737 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3740 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3741 shift = ieee80211_vif_get_shift(&sdata->vif);
3743 sband = local->hw.wiphy->bands[band];
3745 for (i = 0; i < sband->n_bitrates; i++) {
3746 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3756 if (skb_tailroom(skb) < exrates + 2)
3760 pos = skb_put(skb, exrates + 2);
3761 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3763 for (i = 8; i < sband->n_bitrates; i++) {
3765 if ((rate_flags & sband->bitrates[i].flags)
3768 if (need_basic && basic_rates & BIT(i))
3770 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3772 *pos++ = basic | (u8) rate;
3778 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3780 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3781 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3783 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3784 /* non-managed type inferfaces */
3787 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3789 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3791 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3796 /* TODO: consider rx_highest */
3798 if (mcs->rx_mask[3])
3800 if (mcs->rx_mask[2])
3802 if (mcs->rx_mask[1])
3808 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3809 * @local: mac80211 hw info struct
3810 * @status: RX status
3811 * @mpdu_len: total MPDU length (including FCS)
3812 * @mpdu_offset: offset into MPDU to calculate timestamp at
3814 * This function calculates the RX timestamp at the given MPDU offset, taking
3815 * into account what the RX timestamp was. An offset of 0 will just normalize
3816 * the timestamp to TSF at beginning of MPDU reception.
3818 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3819 struct ieee80211_rx_status *status,
3820 unsigned int mpdu_len,
3821 unsigned int mpdu_offset)
3823 u64 ts = status->mactime;
3824 struct rate_info ri;
3828 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3831 memset(&ri, 0, sizeof(ri));
3835 /* Fill cfg80211 rate info */
3836 switch (status->encoding) {
3838 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3839 ri.mcs = status->rate_idx;
3840 ri.nss = status->nss;
3841 ri.he_ru_alloc = status->he_ru;
3842 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3843 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3846 * See P802.11ax_D6.0, section 27.3.4 for
3849 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3855 * For HE MU PPDU, add the HE-SIG-B.
3856 * For HE ER PPDU, add 8us for the HE-SIG-A.
3857 * For HE TB PPDU, add 4us for the HE-STF.
3858 * Add the HE-LTF durations - variable.
3864 ri.mcs = status->rate_idx;
3865 ri.flags |= RATE_INFO_FLAGS_MCS;
3866 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3867 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3870 * See P802.11REVmd_D3.0, section 19.3.2 for
3873 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3875 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3881 * Add Data HT-LTFs per streams
3882 * TODO: add Extension HT-LTFs, 4us per LTF
3884 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3885 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3891 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3892 ri.mcs = status->rate_idx;
3893 ri.nss = status->nss;
3894 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3895 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3898 * See P802.11REVmd_D3.0, section 21.3.2 for
3901 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3906 * Add VHT-LTFs per streams
3908 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3909 ri.nss + 1 : ri.nss;
3917 case RX_ENC_LEGACY: {
3918 struct ieee80211_supported_band *sband;
3922 switch (status->bw) {
3923 case RATE_INFO_BW_10:
3926 case RATE_INFO_BW_5:
3931 sband = local->hw.wiphy->bands[status->band];
3932 bitrate = sband->bitrates[status->rate_idx].bitrate;
3933 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3935 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3936 if (status->band == NL80211_BAND_5GHZ) {
3939 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3949 rate = cfg80211_calculate_bitrate(&ri);
3950 if (WARN_ONCE(!rate,
3951 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3952 (unsigned long long)status->flag, status->rate_idx,
3956 /* rewind from end of MPDU */
3957 if (status->flag & RX_FLAG_MACTIME_END)
3958 ts -= mpdu_len * 8 * 10 / rate;
3960 ts += mpdu_offset * 8 * 10 / rate;
3965 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3967 struct ieee80211_sub_if_data *sdata;
3968 struct cfg80211_chan_def chandef;
3970 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3971 lockdep_assert_wiphy(local->hw.wiphy);
3973 mutex_lock(&local->mtx);
3974 list_for_each_entry(sdata, &local->interfaces, list) {
3975 /* it might be waiting for the local->mtx, but then
3976 * by the time it gets it, sdata->wdev.cac_started
3977 * will no longer be true
3979 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3981 if (sdata->wdev.cac_started) {
3982 chandef = sdata->vif.bss_conf.chandef;
3983 ieee80211_vif_release_channel(sdata);
3984 cfg80211_cac_event(sdata->dev,
3986 NL80211_RADAR_CAC_ABORTED,
3990 mutex_unlock(&local->mtx);
3993 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3995 struct ieee80211_local *local =
3996 container_of(work, struct ieee80211_local, radar_detected_work);
3997 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3998 struct ieee80211_chanctx *ctx;
3999 int num_chanctx = 0;
4001 mutex_lock(&local->chanctx_mtx);
4002 list_for_each_entry(ctx, &local->chanctx_list, list) {
4003 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4007 chandef = ctx->conf.def;
4009 mutex_unlock(&local->chanctx_mtx);
4011 wiphy_lock(local->hw.wiphy);
4012 ieee80211_dfs_cac_cancel(local);
4013 wiphy_unlock(local->hw.wiphy);
4015 if (num_chanctx > 1)
4016 /* XXX: multi-channel is not supported yet */
4019 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4022 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4024 struct ieee80211_local *local = hw_to_local(hw);
4026 trace_api_radar_detected(local);
4028 schedule_work(&local->radar_detected_work);
4030 EXPORT_SYMBOL(ieee80211_radar_detected);
4032 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4038 case NL80211_CHAN_WIDTH_20:
4039 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4040 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4042 case NL80211_CHAN_WIDTH_40:
4043 c->width = NL80211_CHAN_WIDTH_20;
4044 c->center_freq1 = c->chan->center_freq;
4045 ret = IEEE80211_STA_DISABLE_40MHZ |
4046 IEEE80211_STA_DISABLE_VHT;
4048 case NL80211_CHAN_WIDTH_80:
4049 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4053 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4054 c->width = NL80211_CHAN_WIDTH_40;
4055 ret = IEEE80211_STA_DISABLE_VHT;
4057 case NL80211_CHAN_WIDTH_80P80:
4058 c->center_freq2 = 0;
4059 c->width = NL80211_CHAN_WIDTH_80;
4060 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4061 IEEE80211_STA_DISABLE_160MHZ;
4063 case NL80211_CHAN_WIDTH_160:
4065 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4068 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4069 c->width = NL80211_CHAN_WIDTH_80;
4070 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4071 IEEE80211_STA_DISABLE_160MHZ;
4073 case NL80211_CHAN_WIDTH_320:
4075 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4078 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4079 c->width = NL80211_CHAN_WIDTH_160;
4080 ret = IEEE80211_STA_DISABLE_320MHZ;
4083 case NL80211_CHAN_WIDTH_20_NOHT:
4085 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4086 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4088 case NL80211_CHAN_WIDTH_1:
4089 case NL80211_CHAN_WIDTH_2:
4090 case NL80211_CHAN_WIDTH_4:
4091 case NL80211_CHAN_WIDTH_8:
4092 case NL80211_CHAN_WIDTH_16:
4093 case NL80211_CHAN_WIDTH_5:
4094 case NL80211_CHAN_WIDTH_10:
4097 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4101 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4107 * Returns true if smps_mode_new is strictly more restrictive than
4110 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4111 enum ieee80211_smps_mode smps_mode_new)
4113 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4114 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4117 switch (smps_mode_old) {
4118 case IEEE80211_SMPS_STATIC:
4120 case IEEE80211_SMPS_DYNAMIC:
4121 return smps_mode_new == IEEE80211_SMPS_STATIC;
4122 case IEEE80211_SMPS_OFF:
4123 return smps_mode_new != IEEE80211_SMPS_OFF;
4131 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4132 struct cfg80211_csa_settings *csa_settings)
4134 struct sk_buff *skb;
4135 struct ieee80211_mgmt *mgmt;
4136 struct ieee80211_local *local = sdata->local;
4138 int hdr_len = offsetofend(struct ieee80211_mgmt,
4139 u.action.u.chan_switch);
4142 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4143 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4146 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4147 5 + /* channel switch announcement element */
4148 3 + /* secondary channel offset element */
4149 5 + /* wide bandwidth channel switch announcement */
4150 8); /* mesh channel switch parameters element */
4154 skb_reserve(skb, local->tx_headroom);
4155 mgmt = skb_put_zero(skb, hdr_len);
4156 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4157 IEEE80211_STYPE_ACTION);
4159 eth_broadcast_addr(mgmt->da);
4160 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4161 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4162 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4164 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4165 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4167 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4168 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4169 pos = skb_put(skb, 5);
4170 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4171 *pos++ = 3; /* IE length */
4172 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4173 freq = csa_settings->chandef.chan->center_freq;
4174 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4175 *pos++ = csa_settings->count; /* count */
4177 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4178 enum nl80211_channel_type ch_type;
4181 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4182 *pos++ = 1; /* IE length */
4183 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4184 if (ch_type == NL80211_CHAN_HT40PLUS)
4185 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4187 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4190 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4191 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4194 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4195 *pos++ = 6; /* IE length */
4196 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4197 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4198 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4199 *pos++ |= csa_settings->block_tx ?
4200 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4201 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4203 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4207 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4208 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4209 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4211 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4214 ieee80211_tx_skb(sdata, skb);
4218 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4220 return !(cs == NULL || cs->cipher == 0 ||
4221 cs->hdr_len < cs->pn_len + cs->pn_off ||
4222 cs->hdr_len <= cs->key_idx_off ||
4223 cs->key_idx_shift > 7 ||
4224 cs->key_idx_mask == 0);
4227 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4231 /* Ensure we have enough iftype bitmap space for all iftype values */
4232 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4234 for (i = 0; i < n; i++)
4235 if (!ieee80211_cs_valid(&cs[i]))
4241 const struct ieee80211_cipher_scheme *
4242 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4243 enum nl80211_iftype iftype)
4245 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4246 int n = local->hw.n_cipher_schemes;
4248 const struct ieee80211_cipher_scheme *cs = NULL;
4250 for (i = 0; i < n; i++) {
4251 if (l[i].cipher == cipher) {
4257 if (!cs || !(cs->iftype & BIT(iftype)))
4263 int ieee80211_cs_headroom(struct ieee80211_local *local,
4264 struct cfg80211_crypto_settings *crypto,
4265 enum nl80211_iftype iftype)
4267 const struct ieee80211_cipher_scheme *cs;
4268 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4271 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4272 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4275 if (cs && headroom < cs->hdr_len)
4276 headroom = cs->hdr_len;
4279 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4280 if (cs && headroom < cs->hdr_len)
4281 headroom = cs->hdr_len;
4287 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4289 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4296 if (data->count[i] == 1)
4299 if (data->desc[i].interval == 0)
4302 /* End time is in the past, check for repetitions */
4303 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4304 if (data->count[i] < 255) {
4305 if (data->count[i] <= skip) {
4310 data->count[i] -= skip;
4313 data->desc[i].start += skip * data->desc[i].interval;
4319 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4325 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4328 if (!data->count[i])
4331 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4334 cur = data->desc[i].start - tsf;
4338 cur = data->desc[i].start + data->desc[i].duration - tsf;
4347 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4352 * arbitrary limit, used to avoid infinite loops when combined NoA
4353 * descriptors cover the full time period.
4357 ieee80211_extend_absent_time(data, tsf, &offset);
4359 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4363 } while (tries < max_tries);
4368 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4370 u32 next_offset = BIT(31) - 1;
4374 data->has_next_tsf = false;
4375 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4378 if (!data->count[i])
4381 ieee80211_extend_noa_desc(data, tsf, i);
4382 start = data->desc[i].start - tsf;
4384 data->absent |= BIT(i);
4386 if (next_offset > start)
4387 next_offset = start;
4389 data->has_next_tsf = true;
4393 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4395 data->next_tsf = tsf + next_offset;
4397 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4399 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4400 struct ieee80211_noa_data *data, u32 tsf)
4405 memset(data, 0, sizeof(*data));
4407 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4408 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4410 if (!desc->count || !desc->duration)
4413 data->count[i] = desc->count;
4414 data->desc[i].start = le32_to_cpu(desc->start_time);
4415 data->desc[i].duration = le32_to_cpu(desc->duration);
4416 data->desc[i].interval = le32_to_cpu(desc->interval);
4418 if (data->count[i] > 1 &&
4419 data->desc[i].interval < data->desc[i].duration)
4422 ieee80211_extend_noa_desc(data, tsf, i);
4427 ieee80211_update_p2p_noa(data, tsf);
4431 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4433 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4434 struct ieee80211_sub_if_data *sdata)
4436 u64 tsf = drv_get_tsf(local, sdata);
4438 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4439 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4443 if (tsf == -1ULL || !beacon_int || !dtim_period)
4446 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4447 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4451 ps = &sdata->bss->ps;
4452 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4453 ps = &sdata->u.mesh.ps;
4459 * actually finds last dtim_count, mac80211 will update in
4460 * __beacon_add_tim().
4461 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4463 do_div(tsf, beacon_int);
4464 bcns_from_dtim = do_div(tsf, dtim_period);
4465 /* just had a DTIM */
4466 if (!bcns_from_dtim)
4469 dtim_count = dtim_period - bcns_from_dtim;
4471 ps->dtim_count = dtim_count;
4474 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4475 struct ieee80211_chanctx *ctx)
4477 struct ieee80211_sub_if_data *sdata;
4478 u8 radar_detect = 0;
4480 lockdep_assert_held(&local->chanctx_mtx);
4482 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4485 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4486 if (sdata->reserved_radar_required)
4487 radar_detect |= BIT(sdata->reserved_chandef.width);
4490 * An in-place reservation context should not have any assigned vifs
4491 * until it replaces the other context.
4493 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4494 !list_empty(&ctx->assigned_vifs));
4496 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4497 if (sdata->radar_required)
4498 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4500 return radar_detect;
4503 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4504 const struct cfg80211_chan_def *chandef,
4505 enum ieee80211_chanctx_mode chanmode,
4508 struct ieee80211_local *local = sdata->local;
4509 struct ieee80211_sub_if_data *sdata_iter;
4510 enum nl80211_iftype iftype = sdata->wdev.iftype;
4511 struct ieee80211_chanctx *ctx;
4513 struct iface_combination_params params = {
4514 .radar_detect = radar_detect,
4517 lockdep_assert_held(&local->chanctx_mtx);
4519 if (WARN_ON(hweight32(radar_detect) > 1))
4522 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4526 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4529 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4530 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4532 * always passing this is harmless, since it'll be the
4533 * same value that cfg80211 finds if it finds the same
4534 * interface ... and that's always allowed
4536 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4539 /* Always allow software iftypes */
4540 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4547 params.num_different_channels = 1;
4549 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4550 params.iftype_num[iftype] = 1;
4552 list_for_each_entry(ctx, &local->chanctx_list, list) {
4553 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4555 params.radar_detect |=
4556 ieee80211_chanctx_radar_detect(local, ctx);
4557 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4558 params.num_different_channels++;
4561 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4562 cfg80211_chandef_compatible(chandef,
4565 params.num_different_channels++;
4568 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4569 struct wireless_dev *wdev_iter;
4571 wdev_iter = &sdata_iter->wdev;
4573 if (sdata_iter == sdata ||
4574 !ieee80211_sdata_running(sdata_iter) ||
4575 cfg80211_iftype_allowed(local->hw.wiphy,
4576 wdev_iter->iftype, 0, 1))
4579 params.iftype_num[wdev_iter->iftype]++;
4583 if (total == 1 && !params.radar_detect)
4586 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4590 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4593 u32 *max_num_different_channels = data;
4595 *max_num_different_channels = max(*max_num_different_channels,
4596 c->num_different_channels);
4599 int ieee80211_max_num_channels(struct ieee80211_local *local)
4601 struct ieee80211_sub_if_data *sdata;
4602 struct ieee80211_chanctx *ctx;
4603 u32 max_num_different_channels = 1;
4605 struct iface_combination_params params = {0};
4607 lockdep_assert_held(&local->chanctx_mtx);
4609 list_for_each_entry(ctx, &local->chanctx_list, list) {
4610 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4613 params.num_different_channels++;
4615 params.radar_detect |=
4616 ieee80211_chanctx_radar_detect(local, ctx);
4619 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4620 params.iftype_num[sdata->wdev.iftype]++;
4622 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4623 ieee80211_iter_max_chans,
4624 &max_num_different_channels);
4628 return max_num_different_channels;
4631 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4632 struct ieee80211_sta_s1g_cap *caps,
4633 struct sk_buff *skb)
4635 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4636 struct ieee80211_s1g_cap s1g_capab;
4640 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4646 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4647 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4649 /* override the capability info */
4650 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4651 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4653 s1g_capab.capab_info[i] &= ~mask;
4654 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4657 /* then MCS and NSS set */
4658 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4659 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4661 s1g_capab.supp_mcs_nss[i] &= ~mask;
4662 s1g_capab.supp_mcs_nss[i] |=
4663 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4666 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4667 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4668 *pos++ = sizeof(s1g_capab);
4670 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4673 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4674 struct sk_buff *skb)
4676 u8 *pos = skb_put(skb, 3);
4678 *pos++ = WLAN_EID_AID_REQUEST;
4683 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4685 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4686 *buf++ = 7; /* len */
4687 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4690 *buf++ = 2; /* WME */
4691 *buf++ = 0; /* WME info */
4692 *buf++ = 1; /* WME ver */
4693 *buf++ = qosinfo; /* U-APSD no in use */
4698 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4699 unsigned long *frame_cnt,
4700 unsigned long *byte_cnt)
4702 struct txq_info *txqi = to_txq_info(txq);
4703 u32 frag_cnt = 0, frag_bytes = 0;
4704 struct sk_buff *skb;
4706 skb_queue_walk(&txqi->frags, skb) {
4708 frag_bytes += skb->len;
4712 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4715 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4717 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4719 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4720 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4721 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4722 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4723 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4726 u16 ieee80211_encode_usf(int listen_interval)
4728 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4731 /* find greatest USF */
4732 while (usf < IEEE80211_MAX_USF) {
4733 if (listen_interval % listen_int_usf[usf + 1])
4737 ui = listen_interval / listen_int_usf[usf];
4739 /* error if there is a remainder. Should've been checked by user */
4740 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4741 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4742 FIELD_PREP(LISTEN_INT_UI, ui);
4744 return (u16) listen_interval;
4747 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4749 const struct ieee80211_sta_he_cap *he_cap;
4750 const struct ieee80211_sta_eht_cap *eht_cap;
4751 struct ieee80211_supported_band *sband;
4754 sband = ieee80211_get_sband(sdata);
4758 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4759 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4760 if (!he_cap || !eht_cap)
4763 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4764 &eht_cap->eht_cap_elem);
4766 sizeof(he_cap->he_cap_elem) + n +
4767 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4768 eht_cap->eht_cap_elem.phy_cap_info);
4772 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4773 const struct ieee80211_sta_he_cap *he_cap,
4774 const struct ieee80211_sta_eht_cap *eht_cap,
4777 u8 mcs_nss_len, ppet_len;
4781 /* Make sure we have place for the IE */
4782 if (!he_cap || !eht_cap)
4785 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4786 &eht_cap->eht_cap_elem);
4787 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4788 eht_cap->eht_cap_elem.phy_cap_info);
4790 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4791 if ((end - pos) < ie_len)
4794 *pos++ = WLAN_EID_EXTENSION;
4795 *pos++ = ie_len - 2;
4796 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4799 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4800 pos += sizeof(eht_cap->eht_cap_elem);
4802 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4806 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);