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) 2018-2020 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 (sdata->vif.type == NL80211_IFTYPE_AP)
305 ps = &sdata->bss->ps;
307 sdata->vif.txqs_stopped[ac] = false;
309 list_for_each_entry_rcu(sta, &local->sta_list, list) {
310 if (sdata != sta->sdata)
313 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
314 struct ieee80211_txq *txq = sta->sta.txq[i];
319 txqi = to_txq_info(txq);
324 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
328 spin_unlock(&fq->lock);
329 drv_wake_tx_queue(local, txqi);
330 spin_lock(&fq->lock);
337 txqi = to_txq_info(vif->txq);
339 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
340 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
343 spin_unlock(&fq->lock);
345 drv_wake_tx_queue(local, txqi);
349 spin_unlock(&fq->lock);
354 __releases(&local->queue_stop_reason_lock)
355 __acquires(&local->queue_stop_reason_lock)
356 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
358 struct ieee80211_sub_if_data *sdata;
359 int n_acs = IEEE80211_NUM_ACS;
364 if (local->hw.queues < IEEE80211_NUM_ACS)
367 for (i = 0; i < local->hw.queues; i++) {
368 if (local->queue_stop_reasons[i])
371 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
372 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
375 for (ac = 0; ac < n_acs; ac++) {
376 int ac_queue = sdata->vif.hw_queue[ac];
379 sdata->vif.cab_queue == i)
380 __ieee80211_wake_txqs(sdata, ac);
383 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
389 void ieee80211_wake_txqs(unsigned long data)
391 struct ieee80211_local *local = (struct ieee80211_local *)data;
394 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
395 _ieee80211_wake_txqs(local, &flags);
396 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
399 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
401 struct ieee80211_sub_if_data *sdata;
402 int n_acs = IEEE80211_NUM_ACS;
404 if (local->ops->wake_tx_queue)
407 if (local->hw.queues < IEEE80211_NUM_ACS)
410 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
416 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
417 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
420 for (ac = 0; ac < n_acs; ac++) {
421 int ac_queue = sdata->vif.hw_queue[ac];
423 if (ac_queue == queue ||
424 (sdata->vif.cab_queue == queue &&
425 local->queue_stop_reasons[ac_queue] == 0 &&
426 skb_queue_empty(&local->pending[ac_queue])))
427 netif_wake_subqueue(sdata->dev, ac);
432 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
433 enum queue_stop_reason reason,
435 unsigned long *flags)
437 struct ieee80211_local *local = hw_to_local(hw);
439 trace_wake_queue(local, queue, reason);
441 if (WARN_ON(queue >= hw->queues))
444 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
448 local->q_stop_reasons[queue][reason] = 0;
450 local->q_stop_reasons[queue][reason]--;
451 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
452 local->q_stop_reasons[queue][reason] = 0;
455 if (local->q_stop_reasons[queue][reason] == 0)
456 __clear_bit(reason, &local->queue_stop_reasons[queue]);
458 if (local->queue_stop_reasons[queue] != 0)
459 /* someone still has this queue stopped */
462 if (skb_queue_empty(&local->pending[queue])) {
464 ieee80211_propagate_queue_wake(local, queue);
467 tasklet_schedule(&local->tx_pending_tasklet);
470 * Calling _ieee80211_wake_txqs here can be a problem because it may
471 * release queue_stop_reason_lock which has been taken by
472 * __ieee80211_wake_queue's caller. It is certainly not very nice to
473 * release someone's lock, but it is fine because all the callers of
474 * __ieee80211_wake_queue call it right before releasing the lock.
476 if (local->ops->wake_tx_queue) {
477 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
478 tasklet_schedule(&local->wake_txqs_tasklet);
480 _ieee80211_wake_txqs(local, flags);
484 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
485 enum queue_stop_reason reason,
488 struct ieee80211_local *local = hw_to_local(hw);
491 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
492 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
493 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
496 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
498 ieee80211_wake_queue_by_reason(hw, queue,
499 IEEE80211_QUEUE_STOP_REASON_DRIVER,
502 EXPORT_SYMBOL(ieee80211_wake_queue);
504 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
505 enum queue_stop_reason reason,
508 struct ieee80211_local *local = hw_to_local(hw);
509 struct ieee80211_sub_if_data *sdata;
510 int n_acs = IEEE80211_NUM_ACS;
512 trace_stop_queue(local, queue, reason);
514 if (WARN_ON(queue >= hw->queues))
518 local->q_stop_reasons[queue][reason] = 1;
520 local->q_stop_reasons[queue][reason]++;
522 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
525 if (local->hw.queues < IEEE80211_NUM_ACS)
529 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
535 for (ac = 0; ac < n_acs; ac++) {
536 if (sdata->vif.hw_queue[ac] == queue ||
537 sdata->vif.cab_queue == queue) {
538 if (!local->ops->wake_tx_queue) {
539 netif_stop_subqueue(sdata->dev, ac);
542 spin_lock(&local->fq.lock);
543 sdata->vif.txqs_stopped[ac] = true;
544 spin_unlock(&local->fq.lock);
551 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
552 enum queue_stop_reason reason,
555 struct ieee80211_local *local = hw_to_local(hw);
558 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
559 __ieee80211_stop_queue(hw, queue, reason, refcounted);
560 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
563 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
565 ieee80211_stop_queue_by_reason(hw, queue,
566 IEEE80211_QUEUE_STOP_REASON_DRIVER,
569 EXPORT_SYMBOL(ieee80211_stop_queue);
571 void ieee80211_add_pending_skb(struct ieee80211_local *local,
574 struct ieee80211_hw *hw = &local->hw;
576 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
577 int queue = info->hw_queue;
579 if (WARN_ON(!info->control.vif)) {
580 ieee80211_free_txskb(&local->hw, skb);
584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
585 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
587 __skb_queue_tail(&local->pending[queue], skb);
588 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
590 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
593 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
594 struct sk_buff_head *skbs)
596 struct ieee80211_hw *hw = &local->hw;
601 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
602 while ((skb = skb_dequeue(skbs))) {
603 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
605 if (WARN_ON(!info->control.vif)) {
606 ieee80211_free_txskb(&local->hw, skb);
610 queue = info->hw_queue;
612 __ieee80211_stop_queue(hw, queue,
613 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
616 __skb_queue_tail(&local->pending[queue], skb);
619 for (i = 0; i < hw->queues; i++)
620 __ieee80211_wake_queue(hw, i,
621 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
623 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
626 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
627 unsigned long queues,
628 enum queue_stop_reason reason,
631 struct ieee80211_local *local = hw_to_local(hw);
635 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
637 for_each_set_bit(i, &queues, hw->queues)
638 __ieee80211_stop_queue(hw, i, reason, refcounted);
640 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
643 void ieee80211_stop_queues(struct ieee80211_hw *hw)
645 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
646 IEEE80211_QUEUE_STOP_REASON_DRIVER,
649 EXPORT_SYMBOL(ieee80211_stop_queues);
651 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
653 struct ieee80211_local *local = hw_to_local(hw);
657 if (WARN_ON(queue >= hw->queues))
660 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
661 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
662 &local->queue_stop_reasons[queue]);
663 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
666 EXPORT_SYMBOL(ieee80211_queue_stopped);
668 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
669 unsigned long queues,
670 enum queue_stop_reason reason,
673 struct ieee80211_local *local = hw_to_local(hw);
677 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
679 for_each_set_bit(i, &queues, hw->queues)
680 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
682 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
685 void ieee80211_wake_queues(struct ieee80211_hw *hw)
687 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
688 IEEE80211_QUEUE_STOP_REASON_DRIVER,
691 EXPORT_SYMBOL(ieee80211_wake_queues);
694 ieee80211_get_vif_queues(struct ieee80211_local *local,
695 struct ieee80211_sub_if_data *sdata)
699 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
704 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
705 queues |= BIT(sdata->vif.hw_queue[ac]);
706 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
707 queues |= BIT(sdata->vif.cab_queue);
710 queues = BIT(local->hw.queues) - 1;
716 void __ieee80211_flush_queues(struct ieee80211_local *local,
717 struct ieee80211_sub_if_data *sdata,
718 unsigned int queues, bool drop)
720 if (!local->ops->flush)
724 * If no queue was set, or if the HW doesn't support
725 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
727 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
728 queues = ieee80211_get_vif_queues(local, sdata);
730 ieee80211_stop_queues_by_reason(&local->hw, queues,
731 IEEE80211_QUEUE_STOP_REASON_FLUSH,
734 drv_flush(local, sdata, queues, drop);
736 ieee80211_wake_queues_by_reason(&local->hw, queues,
737 IEEE80211_QUEUE_STOP_REASON_FLUSH,
741 void ieee80211_flush_queues(struct ieee80211_local *local,
742 struct ieee80211_sub_if_data *sdata, bool drop)
744 __ieee80211_flush_queues(local, sdata, 0, drop);
747 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
748 struct ieee80211_sub_if_data *sdata,
749 enum queue_stop_reason reason)
751 ieee80211_stop_queues_by_reason(&local->hw,
752 ieee80211_get_vif_queues(local, sdata),
756 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
757 struct ieee80211_sub_if_data *sdata,
758 enum queue_stop_reason reason)
760 ieee80211_wake_queues_by_reason(&local->hw,
761 ieee80211_get_vif_queues(local, sdata),
765 static void __iterate_interfaces(struct ieee80211_local *local,
767 void (*iterator)(void *data, u8 *mac,
768 struct ieee80211_vif *vif),
771 struct ieee80211_sub_if_data *sdata;
772 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
774 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
775 switch (sdata->vif.type) {
776 case NL80211_IFTYPE_MONITOR:
777 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
780 case NL80211_IFTYPE_AP_VLAN:
785 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
786 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
788 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
789 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
791 if (ieee80211_sdata_running(sdata) || !active_only)
792 iterator(data, sdata->vif.addr,
796 sdata = rcu_dereference_check(local->monitor_sdata,
797 lockdep_is_held(&local->iflist_mtx) ||
798 lockdep_rtnl_is_held());
800 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
801 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
802 iterator(data, sdata->vif.addr, &sdata->vif);
805 void ieee80211_iterate_interfaces(
806 struct ieee80211_hw *hw, u32 iter_flags,
807 void (*iterator)(void *data, u8 *mac,
808 struct ieee80211_vif *vif),
811 struct ieee80211_local *local = hw_to_local(hw);
813 mutex_lock(&local->iflist_mtx);
814 __iterate_interfaces(local, iter_flags, iterator, data);
815 mutex_unlock(&local->iflist_mtx);
817 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
819 void ieee80211_iterate_active_interfaces_atomic(
820 struct ieee80211_hw *hw, u32 iter_flags,
821 void (*iterator)(void *data, u8 *mac,
822 struct ieee80211_vif *vif),
825 struct ieee80211_local *local = hw_to_local(hw);
828 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
832 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
834 void ieee80211_iterate_active_interfaces_rtnl(
835 struct ieee80211_hw *hw, u32 iter_flags,
836 void (*iterator)(void *data, u8 *mac,
837 struct ieee80211_vif *vif),
840 struct ieee80211_local *local = hw_to_local(hw);
844 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
847 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
849 static void __iterate_stations(struct ieee80211_local *local,
850 void (*iterator)(void *data,
851 struct ieee80211_sta *sta),
854 struct sta_info *sta;
856 list_for_each_entry_rcu(sta, &local->sta_list, list) {
860 iterator(data, &sta->sta);
864 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
865 void (*iterator)(void *data,
866 struct ieee80211_sta *sta),
869 struct ieee80211_local *local = hw_to_local(hw);
872 __iterate_stations(local, iterator, data);
875 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
877 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
879 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
881 if (!ieee80211_sdata_running(sdata) ||
882 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
886 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
888 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
890 struct ieee80211_sub_if_data *sdata;
895 sdata = vif_to_sdata(vif);
897 if (!ieee80211_sdata_running(sdata) ||
898 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
903 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
906 * Nothing should have been stuffed into the workqueue during
907 * the suspend->resume cycle. Since we can't check each caller
908 * of this function if we are already quiescing / suspended,
909 * check here and don't WARN since this can actually happen when
910 * the rx path (for example) is racing against __ieee80211_suspend
911 * and suspending / quiescing was set after the rx path checked
914 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
916 if (local->quiescing || (local->suspended && !local->resuming)) {
917 pr_warn("queueing ieee80211 work while going to suspend\n");
924 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
926 struct ieee80211_local *local = hw_to_local(hw);
928 if (!ieee80211_can_queue_work(local))
931 queue_work(local->workqueue, work);
933 EXPORT_SYMBOL(ieee80211_queue_work);
935 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
936 struct delayed_work *dwork,
939 struct ieee80211_local *local = hw_to_local(hw);
941 if (!ieee80211_can_queue_work(local))
944 queue_delayed_work(local->workqueue, dwork, delay);
946 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
948 static void ieee80211_parse_extension_element(u32 *crc,
949 const struct element *elem,
950 struct ieee802_11_elems *elems)
952 const void *data = elem->data + 1;
958 len = elem->datalen - 1;
960 switch (elem->data[0]) {
961 case WLAN_EID_EXT_HE_MU_EDCA:
962 if (len >= sizeof(*elems->mu_edca_param_set)) {
963 elems->mu_edca_param_set = data;
965 *crc = crc32_be(*crc, (void *)elem,
969 case WLAN_EID_EXT_HE_CAPABILITY:
970 elems->he_cap = data;
971 elems->he_cap_len = len;
973 case WLAN_EID_EXT_HE_OPERATION:
974 if (len >= sizeof(*elems->he_operation) &&
975 len >= ieee80211_he_oper_size(data) - 1) {
977 *crc = crc32_be(*crc, (void *)elem,
979 elems->he_operation = data;
982 case WLAN_EID_EXT_UORA:
984 elems->uora_element = data;
986 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
988 elems->max_channel_switch_time = data;
990 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
991 if (len >= sizeof(*elems->mbssid_config_ie))
992 elems->mbssid_config_ie = data;
994 case WLAN_EID_EXT_HE_SPR:
995 if (len >= sizeof(*elems->he_spr) &&
996 len >= ieee80211_he_spr_size(data))
997 elems->he_spr = data;
999 case WLAN_EID_EXT_HE_6GHZ_CAPA:
1000 if (len >= sizeof(*elems->he_6ghz_capa))
1001 elems->he_6ghz_capa = data;
1007 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1008 struct ieee802_11_elems *elems,
1009 u64 filter, u32 crc,
1010 const struct element *check_inherit)
1012 const struct element *elem;
1013 bool calc_crc = filter != 0;
1014 DECLARE_BITMAP(seen_elems, 256);
1017 bitmap_zero(seen_elems, 256);
1019 for_each_element(elem, start, len) {
1020 bool elem_parse_failed;
1022 u8 elen = elem->datalen;
1023 const u8 *pos = elem->data;
1025 if (check_inherit &&
1026 !cfg80211_is_element_inherited(elem,
1032 case WLAN_EID_SUPP_RATES:
1033 case WLAN_EID_FH_PARAMS:
1034 case WLAN_EID_DS_PARAMS:
1035 case WLAN_EID_CF_PARAMS:
1037 case WLAN_EID_IBSS_PARAMS:
1038 case WLAN_EID_CHALLENGE:
1040 case WLAN_EID_ERP_INFO:
1041 case WLAN_EID_EXT_SUPP_RATES:
1042 case WLAN_EID_HT_CAPABILITY:
1043 case WLAN_EID_HT_OPERATION:
1044 case WLAN_EID_VHT_CAPABILITY:
1045 case WLAN_EID_VHT_OPERATION:
1046 case WLAN_EID_MESH_ID:
1047 case WLAN_EID_MESH_CONFIG:
1048 case WLAN_EID_PEER_MGMT:
1053 case WLAN_EID_CHANNEL_SWITCH:
1054 case WLAN_EID_EXT_CHANSWITCH_ANN:
1055 case WLAN_EID_COUNTRY:
1056 case WLAN_EID_PWR_CONSTRAINT:
1057 case WLAN_EID_TIMEOUT_INTERVAL:
1058 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1059 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1060 case WLAN_EID_CHAN_SWITCH_PARAM:
1061 case WLAN_EID_EXT_CAPABILITY:
1062 case WLAN_EID_CHAN_SWITCH_TIMING:
1063 case WLAN_EID_LINK_ID:
1064 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1066 case WLAN_EID_S1G_BCN_COMPAT:
1067 case WLAN_EID_S1G_CAPABILITIES:
1068 case WLAN_EID_S1G_OPERATION:
1069 case WLAN_EID_AID_RESPONSE:
1070 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1072 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1073 * that if the content gets bigger it might be needed more than once
1075 if (test_bit(id, seen_elems)) {
1076 elems->parse_error = true;
1082 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1083 crc = crc32_be(crc, pos - 2, elen + 2);
1085 elem_parse_failed = false;
1088 case WLAN_EID_LINK_ID:
1089 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1090 elem_parse_failed = true;
1093 elems->lnk_id = (void *)(pos - 2);
1095 case WLAN_EID_CHAN_SWITCH_TIMING:
1096 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1097 elem_parse_failed = true;
1100 elems->ch_sw_timing = (void *)pos;
1102 case WLAN_EID_EXT_CAPABILITY:
1103 elems->ext_capab = pos;
1104 elems->ext_capab_len = elen;
1108 elems->ssid_len = elen;
1110 case WLAN_EID_SUPP_RATES:
1111 elems->supp_rates = pos;
1112 elems->supp_rates_len = elen;
1114 case WLAN_EID_DS_PARAMS:
1116 elems->ds_params = pos;
1118 elem_parse_failed = true;
1121 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1122 elems->tim = (void *)pos;
1123 elems->tim_len = elen;
1125 elem_parse_failed = true;
1127 case WLAN_EID_VENDOR_SPECIFIC:
1128 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1130 /* Microsoft OUI (00:50:F2) */
1133 crc = crc32_be(crc, pos - 2, elen + 2);
1135 if (elen >= 5 && pos[3] == 2) {
1136 /* OUI Type 2 - WMM IE */
1138 elems->wmm_info = pos;
1139 elems->wmm_info_len = elen;
1140 } else if (pos[4] == 1) {
1141 elems->wmm_param = pos;
1142 elems->wmm_param_len = elen;
1149 elems->rsn_len = elen;
1151 case WLAN_EID_ERP_INFO:
1153 elems->erp_info = pos;
1155 elem_parse_failed = true;
1157 case WLAN_EID_EXT_SUPP_RATES:
1158 elems->ext_supp_rates = pos;
1159 elems->ext_supp_rates_len = elen;
1161 case WLAN_EID_HT_CAPABILITY:
1162 if (elen >= sizeof(struct ieee80211_ht_cap))
1163 elems->ht_cap_elem = (void *)pos;
1165 elem_parse_failed = true;
1167 case WLAN_EID_HT_OPERATION:
1168 if (elen >= sizeof(struct ieee80211_ht_operation))
1169 elems->ht_operation = (void *)pos;
1171 elem_parse_failed = true;
1173 case WLAN_EID_VHT_CAPABILITY:
1174 if (elen >= sizeof(struct ieee80211_vht_cap))
1175 elems->vht_cap_elem = (void *)pos;
1177 elem_parse_failed = true;
1179 case WLAN_EID_VHT_OPERATION:
1180 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1181 elems->vht_operation = (void *)pos;
1183 crc = crc32_be(crc, pos - 2, elen + 2);
1186 elem_parse_failed = true;
1188 case WLAN_EID_OPMODE_NOTIF:
1190 elems->opmode_notif = pos;
1192 crc = crc32_be(crc, pos - 2, elen + 2);
1195 elem_parse_failed = true;
1197 case WLAN_EID_MESH_ID:
1198 elems->mesh_id = pos;
1199 elems->mesh_id_len = elen;
1201 case WLAN_EID_MESH_CONFIG:
1202 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1203 elems->mesh_config = (void *)pos;
1205 elem_parse_failed = true;
1207 case WLAN_EID_PEER_MGMT:
1208 elems->peering = pos;
1209 elems->peering_len = elen;
1211 case WLAN_EID_MESH_AWAKE_WINDOW:
1213 elems->awake_window = (void *)pos;
1217 elems->preq_len = elen;
1221 elems->prep_len = elen;
1225 elems->perr_len = elen;
1228 if (elen >= sizeof(struct ieee80211_rann_ie))
1229 elems->rann = (void *)pos;
1231 elem_parse_failed = true;
1233 case WLAN_EID_CHANNEL_SWITCH:
1234 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1235 elem_parse_failed = true;
1238 elems->ch_switch_ie = (void *)pos;
1240 case WLAN_EID_EXT_CHANSWITCH_ANN:
1241 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1242 elem_parse_failed = true;
1245 elems->ext_chansw_ie = (void *)pos;
1247 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1248 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1249 elem_parse_failed = true;
1252 elems->sec_chan_offs = (void *)pos;
1254 case WLAN_EID_CHAN_SWITCH_PARAM:
1256 sizeof(*elems->mesh_chansw_params_ie)) {
1257 elem_parse_failed = true;
1260 elems->mesh_chansw_params_ie = (void *)pos;
1262 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1264 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1265 elem_parse_failed = true;
1268 elems->wide_bw_chansw_ie = (void *)pos;
1270 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1272 elem_parse_failed = true;
1276 * This is a bit tricky, but as we only care about
1277 * the wide bandwidth channel switch element, so
1278 * just parse it out manually.
1280 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1283 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1284 elems->wide_bw_chansw_ie =
1287 elem_parse_failed = true;
1290 case WLAN_EID_COUNTRY:
1291 elems->country_elem = pos;
1292 elems->country_elem_len = elen;
1294 case WLAN_EID_PWR_CONSTRAINT:
1296 elem_parse_failed = true;
1299 elems->pwr_constr_elem = pos;
1301 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1302 /* Lots of different options exist, but we only care
1303 * about the Dynamic Transmit Power Control element.
1304 * First check for the Cisco OUI, then for the DTPC
1308 elem_parse_failed = true;
1312 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1313 pos[2] != 0x96 || pos[3] != 0x00)
1317 elem_parse_failed = true;
1322 crc = crc32_be(crc, pos - 2, elen + 2);
1324 elems->cisco_dtpc_elem = pos;
1326 case WLAN_EID_ADDBA_EXT:
1327 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1328 elem_parse_failed = true;
1331 elems->addba_ext_ie = (void *)pos;
1333 case WLAN_EID_TIMEOUT_INTERVAL:
1334 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1335 elems->timeout_int = (void *)pos;
1337 elem_parse_failed = true;
1339 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1340 if (elen >= sizeof(*elems->max_idle_period_ie))
1341 elems->max_idle_period_ie = (void *)pos;
1345 elems->rsnx_len = elen;
1347 case WLAN_EID_EXTENSION:
1348 ieee80211_parse_extension_element(calc_crc ?
1352 case WLAN_EID_S1G_CAPABILITIES:
1353 if (elen >= sizeof(*elems->s1g_capab))
1354 elems->s1g_capab = (void *)pos;
1356 elem_parse_failed = true;
1358 case WLAN_EID_S1G_OPERATION:
1359 if (elen == sizeof(*elems->s1g_oper))
1360 elems->s1g_oper = (void *)pos;
1362 elem_parse_failed = true;
1364 case WLAN_EID_S1G_BCN_COMPAT:
1365 if (elen == sizeof(*elems->s1g_bcn_compat))
1366 elems->s1g_bcn_compat = (void *)pos;
1368 elem_parse_failed = true;
1370 case WLAN_EID_AID_RESPONSE:
1371 if (elen == sizeof(struct ieee80211_aid_response_ie))
1372 elems->aid_resp = (void *)pos;
1374 elem_parse_failed = true;
1380 if (elem_parse_failed)
1381 elems->parse_error = true;
1383 __set_bit(id, seen_elems);
1386 if (!for_each_element_completed(elem, start, len))
1387 elems->parse_error = true;
1392 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1393 struct ieee802_11_elems *elems,
1394 u8 *transmitter_bssid,
1396 u8 *nontransmitted_profile)
1398 const struct element *elem, *sub;
1399 size_t profile_len = 0;
1402 if (!bss_bssid || !transmitter_bssid)
1405 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1406 if (elem->datalen < 2)
1408 if (elem->data[0] < 1 || elem->data[0] > 8)
1411 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1412 u8 new_bssid[ETH_ALEN];
1415 if (sub->id != 0 || sub->datalen < 4) {
1416 /* not a valid BSS profile */
1420 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1421 sub->data[1] != 2) {
1422 /* The first element of the
1423 * Nontransmitted BSSID Profile is not
1424 * the Nontransmitted BSSID Capability
1430 memset(nontransmitted_profile, 0, len);
1431 profile_len = cfg80211_merge_profile(start, len,
1434 nontransmitted_profile,
1437 /* found a Nontransmitted BSSID Profile */
1438 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1439 nontransmitted_profile,
1441 if (!index || index[1] < 1 || index[2] == 0) {
1442 /* Invalid MBSSID Index element */
1446 cfg80211_gen_new_bssid(transmitter_bssid,
1450 if (ether_addr_equal(new_bssid, bss_bssid)) {
1452 elems->bssid_index_len = index[1];
1453 elems->bssid_index = (void *)&index[2];
1459 return found ? profile_len : 0;
1462 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1463 struct ieee802_11_elems *elems,
1464 u64 filter, u32 crc, u8 *transmitter_bssid,
1467 const struct element *non_inherit = NULL;
1468 u8 *nontransmitted_profile;
1469 int nontransmitted_profile_len = 0;
1471 memset(elems, 0, sizeof(*elems));
1472 elems->ie_start = start;
1473 elems->total_len = len;
1475 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1476 if (nontransmitted_profile) {
1477 nontransmitted_profile_len =
1478 ieee802_11_find_bssid_profile(start, len, elems,
1481 nontransmitted_profile);
1483 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1484 nontransmitted_profile,
1485 nontransmitted_profile_len);
1486 if (!nontransmitted_profile_len) {
1487 nontransmitted_profile_len = 0;
1488 kfree(nontransmitted_profile);
1489 nontransmitted_profile = NULL;
1493 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1496 /* Override with nontransmitted profile, if found */
1497 if (nontransmitted_profile_len)
1498 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1499 nontransmitted_profile_len,
1500 action, elems, 0, 0, NULL);
1502 if (elems->tim && !elems->parse_error) {
1503 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1505 elems->dtim_period = tim_ie->dtim_period;
1506 elems->dtim_count = tim_ie->dtim_count;
1509 /* Override DTIM period and count if needed */
1510 if (elems->bssid_index &&
1511 elems->bssid_index_len >=
1512 offsetofend(struct ieee80211_bssid_index, dtim_period))
1513 elems->dtim_period = elems->bssid_index->dtim_period;
1515 if (elems->bssid_index &&
1516 elems->bssid_index_len >=
1517 offsetofend(struct ieee80211_bssid_index, dtim_count))
1518 elems->dtim_count = elems->bssid_index->dtim_count;
1520 elems->nontx_profile = nontransmitted_profile;
1525 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1526 struct ieee80211_tx_queue_params
1529 struct ieee80211_chanctx_conf *chanctx_conf;
1530 const struct ieee80211_reg_rule *rrule;
1531 const struct ieee80211_wmm_ac *wmm_ac;
1532 u16 center_freq = 0;
1534 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1535 sdata->vif.type != NL80211_IFTYPE_STATION)
1539 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1541 center_freq = chanctx_conf->def.chan->center_freq;
1548 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1550 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1555 if (sdata->vif.type == NL80211_IFTYPE_AP)
1556 wmm_ac = &rrule->wmm_rule.ap[ac];
1558 wmm_ac = &rrule->wmm_rule.client[ac];
1559 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1560 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1561 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1562 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1566 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1567 bool bss_notify, bool enable_qos)
1569 struct ieee80211_local *local = sdata->local;
1570 struct ieee80211_tx_queue_params qparam;
1571 struct ieee80211_chanctx_conf *chanctx_conf;
1574 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1577 if (!local->ops->conf_tx)
1580 if (local->hw.queues < IEEE80211_NUM_ACS)
1583 memset(&qparam, 0, sizeof(qparam));
1586 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1587 use_11b = (chanctx_conf &&
1588 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1589 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1592 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1594 /* Set defaults according to 802.11-2007 Table 7-37 */
1601 /* Confiure old 802.11b/g medium access rules. */
1602 qparam.cw_max = aCWmax;
1603 qparam.cw_min = aCWmin;
1607 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1608 /* Update if QoS is enabled. */
1611 case IEEE80211_AC_BK:
1612 qparam.cw_max = aCWmax;
1613 qparam.cw_min = aCWmin;
1620 /* never happens but let's not leave undefined */
1622 case IEEE80211_AC_BE:
1623 qparam.cw_max = aCWmax;
1624 qparam.cw_min = aCWmin;
1631 case IEEE80211_AC_VI:
1632 qparam.cw_max = aCWmin;
1633 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1637 qparam.txop = 6016/32;
1639 qparam.txop = 3008/32;
1646 case IEEE80211_AC_VO:
1647 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1648 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1652 qparam.txop = 3264/32;
1654 qparam.txop = 1504/32;
1659 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1661 qparam.uapsd = false;
1663 sdata->tx_conf[ac] = qparam;
1664 drv_conf_tx(local, sdata, ac, &qparam);
1667 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1668 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1669 sdata->vif.type != NL80211_IFTYPE_NAN) {
1670 sdata->vif.bss_conf.qos = enable_qos;
1672 ieee80211_bss_info_change_notify(sdata,
1677 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1678 u16 transaction, u16 auth_alg, u16 status,
1679 const u8 *extra, size_t extra_len, const u8 *da,
1680 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1683 struct ieee80211_local *local = sdata->local;
1684 struct sk_buff *skb;
1685 struct ieee80211_mgmt *mgmt;
1688 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1689 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1690 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1694 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1696 mgmt = skb_put_zero(skb, 24 + 6);
1697 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1698 IEEE80211_STYPE_AUTH);
1699 memcpy(mgmt->da, da, ETH_ALEN);
1700 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1701 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1702 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1703 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1704 mgmt->u.auth.status_code = cpu_to_le16(status);
1706 skb_put_data(skb, extra, extra_len);
1708 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1709 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1710 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1714 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1716 ieee80211_tx_skb(sdata, skb);
1719 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1720 const u8 *da, const u8 *bssid,
1721 u16 stype, u16 reason,
1722 bool send_frame, u8 *frame_buf)
1724 struct ieee80211_local *local = sdata->local;
1725 struct sk_buff *skb;
1726 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1729 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1730 mgmt->duration = 0; /* initialize only */
1731 mgmt->seq_ctrl = 0; /* initialize only */
1732 memcpy(mgmt->da, da, ETH_ALEN);
1733 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1734 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1735 /* u.deauth.reason_code == u.disassoc.reason_code */
1736 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1739 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1740 IEEE80211_DEAUTH_FRAME_LEN);
1744 skb_reserve(skb, local->hw.extra_tx_headroom);
1747 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1749 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1750 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1751 IEEE80211_SKB_CB(skb)->flags |=
1752 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1754 ieee80211_tx_skb(sdata, skb);
1758 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1760 if ((end - pos) < 5)
1763 *pos++ = WLAN_EID_EXTENSION;
1764 *pos++ = 1 + sizeof(cap);
1765 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1766 memcpy(pos, &cap, sizeof(cap));
1771 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1772 u8 *buffer, size_t buffer_len,
1773 const u8 *ie, size_t ie_len,
1774 enum nl80211_band band,
1776 struct cfg80211_chan_def *chandef,
1777 size_t *offset, u32 flags)
1779 struct ieee80211_local *local = sdata->local;
1780 struct ieee80211_supported_band *sband;
1781 const struct ieee80211_sta_he_cap *he_cap;
1782 u8 *pos = buffer, *end = buffer + buffer_len;
1784 int supp_rates_len, i;
1790 bool have_80mhz = false;
1794 sband = local->hw.wiphy->bands[band];
1795 if (WARN_ON_ONCE(!sband))
1798 rate_flags = ieee80211_chandef_rate_flags(chandef);
1799 shift = ieee80211_chandef_get_shift(chandef);
1802 for (i = 0; i < sband->n_bitrates; i++) {
1803 if ((BIT(i) & rate_mask) == 0)
1804 continue; /* skip rate */
1805 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1808 rates[num_rates++] =
1809 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1813 supp_rates_len = min_t(int, num_rates, 8);
1815 if (end - pos < 2 + supp_rates_len)
1817 *pos++ = WLAN_EID_SUPP_RATES;
1818 *pos++ = supp_rates_len;
1819 memcpy(pos, rates, supp_rates_len);
1820 pos += supp_rates_len;
1822 /* insert "request information" if in custom IEs */
1824 static const u8 before_extrates[] = {
1826 WLAN_EID_SUPP_RATES,
1829 noffset = ieee80211_ie_split(ie, ie_len,
1831 ARRAY_SIZE(before_extrates),
1833 if (end - pos < noffset - *offset)
1835 memcpy(pos, ie + *offset, noffset - *offset);
1836 pos += noffset - *offset;
1840 ext_rates_len = num_rates - supp_rates_len;
1841 if (ext_rates_len > 0) {
1842 if (end - pos < 2 + ext_rates_len)
1844 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1845 *pos++ = ext_rates_len;
1846 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1847 pos += ext_rates_len;
1850 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1853 *pos++ = WLAN_EID_DS_PARAMS;
1855 *pos++ = ieee80211_frequency_to_channel(
1856 chandef->chan->center_freq);
1859 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1862 /* insert custom IEs that go before HT */
1864 static const u8 before_ht[] = {
1866 * no need to list the ones split off already
1867 * (or generated here)
1870 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1872 noffset = ieee80211_ie_split(ie, ie_len,
1873 before_ht, ARRAY_SIZE(before_ht),
1875 if (end - pos < noffset - *offset)
1877 memcpy(pos, ie + *offset, noffset - *offset);
1878 pos += noffset - *offset;
1882 if (sband->ht_cap.ht_supported) {
1883 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1885 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1889 /* insert custom IEs that go before VHT */
1891 static const u8 before_vht[] = {
1893 * no need to list the ones split off already
1894 * (or generated here)
1896 WLAN_EID_BSS_COEX_2040,
1897 WLAN_EID_EXT_CAPABILITY,
1899 WLAN_EID_CHANNEL_USAGE,
1900 WLAN_EID_INTERWORKING,
1902 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1904 noffset = ieee80211_ie_split(ie, ie_len,
1905 before_vht, ARRAY_SIZE(before_vht),
1907 if (end - pos < noffset - *offset)
1909 memcpy(pos, ie + *offset, noffset - *offset);
1910 pos += noffset - *offset;
1914 /* Check if any channel in this sband supports at least 80 MHz */
1915 for (i = 0; i < sband->n_channels; i++) {
1916 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1917 IEEE80211_CHAN_NO_80MHZ))
1924 if (sband->vht_cap.vht_supported && have_80mhz) {
1925 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1927 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1928 sband->vht_cap.cap);
1931 /* insert custom IEs that go before HE */
1933 static const u8 before_he[] = {
1935 * no need to list the ones split off before VHT
1938 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1940 /* TODO: add 11ah/11aj/11ak elements */
1942 noffset = ieee80211_ie_split(ie, ie_len,
1943 before_he, ARRAY_SIZE(before_he),
1945 if (end - pos < noffset - *offset)
1947 memcpy(pos, ie + *offset, noffset - *offset);
1948 pos += noffset - *offset;
1952 he_cap = ieee80211_get_he_sta_cap(sband);
1954 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1958 if (sband->band == NL80211_BAND_6GHZ) {
1959 enum nl80211_iftype iftype =
1960 ieee80211_vif_type_p2p(&sdata->vif);
1961 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1963 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1968 * If adding more here, adjust code in main.c
1969 * that calculates local->scan_ies_len.
1972 return pos - buffer;
1974 WARN_ONCE(1, "not enough space for preq IEs\n");
1976 return pos - buffer;
1979 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1981 struct ieee80211_scan_ies *ie_desc,
1982 const u8 *ie, size_t ie_len,
1983 u8 bands_used, u32 *rate_masks,
1984 struct cfg80211_chan_def *chandef,
1987 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1990 memset(ie_desc, 0, sizeof(*ie_desc));
1992 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1993 if (bands_used & BIT(i)) {
1994 pos += ieee80211_build_preq_ies_band(sdata,
2002 ie_desc->ies[i] = buffer + old_pos;
2003 ie_desc->len[i] = pos - old_pos;
2008 /* add any remaining custom IEs */
2010 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2011 "not enough space for preq custom IEs\n"))
2013 memcpy(buffer + pos, ie + custom_ie_offset,
2014 ie_len - custom_ie_offset);
2015 ie_desc->common_ies = buffer + pos;
2016 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2017 pos += ie_len - custom_ie_offset;
2023 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2024 const u8 *src, const u8 *dst,
2026 struct ieee80211_channel *chan,
2027 const u8 *ssid, size_t ssid_len,
2028 const u8 *ie, size_t ie_len,
2031 struct ieee80211_local *local = sdata->local;
2032 struct cfg80211_chan_def chandef;
2033 struct sk_buff *skb;
2034 struct ieee80211_mgmt *mgmt;
2036 u32 rate_masks[NUM_NL80211_BANDS] = {};
2037 struct ieee80211_scan_ies dummy_ie_desc;
2040 * Do not send DS Channel parameter for directed probe requests
2041 * in order to maximize the chance that we get a response. Some
2042 * badly-behaved APs don't respond when this parameter is included.
2044 chandef.width = sdata->vif.bss_conf.chandef.width;
2045 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2046 chandef.chan = NULL;
2048 chandef.chan = chan;
2050 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2055 rate_masks[chan->band] = ratemask;
2056 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2057 skb_tailroom(skb), &dummy_ie_desc,
2058 ie, ie_len, BIT(chan->band),
2059 rate_masks, &chandef, flags);
2060 skb_put(skb, ies_len);
2063 mgmt = (struct ieee80211_mgmt *) skb->data;
2064 memcpy(mgmt->da, dst, ETH_ALEN);
2065 memcpy(mgmt->bssid, dst, ETH_ALEN);
2068 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2073 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2074 struct ieee802_11_elems *elems,
2075 enum nl80211_band band, u32 *basic_rates)
2077 struct ieee80211_supported_band *sband;
2079 u32 supp_rates, rate_flags;
2082 sband = sdata->local->hw.wiphy->bands[band];
2083 if (WARN_ON(!sband))
2086 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2087 shift = ieee80211_vif_get_shift(&sdata->vif);
2089 num_rates = sband->n_bitrates;
2091 for (i = 0; i < elems->supp_rates_len +
2092 elems->ext_supp_rates_len; i++) {
2096 if (i < elems->supp_rates_len)
2097 rate = elems->supp_rates[i];
2098 else if (elems->ext_supp_rates)
2099 rate = elems->ext_supp_rates
2100 [i - elems->supp_rates_len];
2101 own_rate = 5 * (rate & 0x7f);
2102 is_basic = !!(rate & 0x80);
2104 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2107 for (j = 0; j < num_rates; j++) {
2109 if ((rate_flags & sband->bitrates[j].flags)
2113 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2116 if (brate == own_rate) {
2117 supp_rates |= BIT(j);
2118 if (basic_rates && is_basic)
2119 *basic_rates |= BIT(j);
2126 void ieee80211_stop_device(struct ieee80211_local *local)
2128 ieee80211_led_radio(local, false);
2129 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2131 cancel_work_sync(&local->reconfig_filter);
2133 flush_workqueue(local->workqueue);
2137 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2140 /* It's possible that we don't handle the scan completion in
2141 * time during suspend, so if it's still marked as completed
2142 * here, queue the work and flush it to clean things up.
2143 * Instead of calling the worker function directly here, we
2144 * really queue it to avoid potential races with other flows
2145 * scheduling the same work.
2147 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2148 /* If coming from reconfiguration failure, abort the scan so
2149 * we don't attempt to continue a partial HW scan - which is
2150 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2151 * completed scan, and a 5 GHz portion is still pending.
2154 set_bit(SCAN_ABORTED, &local->scanning);
2155 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2156 flush_delayed_work(&local->scan_work);
2160 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2162 struct ieee80211_sub_if_data *sdata;
2163 struct ieee80211_chanctx *ctx;
2166 * We get here if during resume the device can't be restarted properly.
2167 * We might also get here if this happens during HW reset, which is a
2168 * slightly different situation and we need to drop all connections in
2171 * Ask cfg80211 to turn off all interfaces, this will result in more
2172 * warnings but at least we'll then get into a clean stopped state.
2175 local->resuming = false;
2176 local->suspended = false;
2177 local->in_reconfig = false;
2179 ieee80211_flush_completed_scan(local, true);
2181 /* scheduled scan clearly can't be running any more, but tell
2182 * cfg80211 and clear local state
2184 ieee80211_sched_scan_end(local);
2186 list_for_each_entry(sdata, &local->interfaces, list)
2187 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2189 /* Mark channel contexts as not being in the driver any more to avoid
2190 * removing them from the driver during the shutdown process...
2192 mutex_lock(&local->chanctx_mtx);
2193 list_for_each_entry(ctx, &local->chanctx_list, list)
2194 ctx->driver_present = false;
2195 mutex_unlock(&local->chanctx_mtx);
2197 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2200 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2201 struct ieee80211_sub_if_data *sdata)
2203 struct ieee80211_chanctx_conf *conf;
2204 struct ieee80211_chanctx *ctx;
2206 if (!local->use_chanctx)
2209 mutex_lock(&local->chanctx_mtx);
2210 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2211 lockdep_is_held(&local->chanctx_mtx));
2213 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2214 drv_assign_vif_chanctx(local, sdata, ctx);
2216 mutex_unlock(&local->chanctx_mtx);
2219 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2221 struct ieee80211_local *local = sdata->local;
2222 struct sta_info *sta;
2225 mutex_lock(&local->sta_mtx);
2226 list_for_each_entry(sta, &local->sta_list, list) {
2227 enum ieee80211_sta_state state;
2229 if (!sta->uploaded || sta->sdata != sdata)
2232 for (state = IEEE80211_STA_NOTEXIST;
2233 state < sta->sta_state; state++)
2234 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2237 mutex_unlock(&local->sta_mtx);
2240 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2242 struct cfg80211_nan_func *func, **funcs;
2245 res = drv_start_nan(sdata->local, sdata,
2246 &sdata->u.nan.conf);
2250 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2256 /* Add all the functions:
2257 * This is a little bit ugly. We need to call a potentially sleeping
2258 * callback for each NAN function, so we can't hold the spinlock.
2260 spin_lock_bh(&sdata->u.nan.func_lock);
2262 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2265 spin_unlock_bh(&sdata->u.nan.func_lock);
2267 for (i = 0; funcs[i]; i++) {
2268 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2270 ieee80211_nan_func_terminated(&sdata->vif,
2271 funcs[i]->instance_id,
2272 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2281 int ieee80211_reconfig(struct ieee80211_local *local)
2283 struct ieee80211_hw *hw = &local->hw;
2284 struct ieee80211_sub_if_data *sdata;
2285 struct ieee80211_chanctx *ctx;
2286 struct sta_info *sta;
2288 bool reconfig_due_to_wowlan = false;
2289 struct ieee80211_sub_if_data *sched_scan_sdata;
2290 struct cfg80211_sched_scan_request *sched_scan_req;
2291 bool sched_scan_stopped = false;
2292 bool suspended = local->suspended;
2294 /* nothing to do if HW shouldn't run */
2295 if (!local->open_count)
2300 local->resuming = true;
2302 if (local->wowlan) {
2304 * In the wowlan case, both mac80211 and the device
2305 * are functional when the resume op is called, so
2306 * clear local->suspended so the device could operate
2307 * normally (e.g. pass rx frames).
2309 local->suspended = false;
2310 res = drv_resume(local);
2311 local->wowlan = false;
2313 local->resuming = false;
2320 * res is 1, which means the driver requested
2321 * to go through a regular reset on wakeup.
2322 * restore local->suspended in this case.
2324 reconfig_due_to_wowlan = true;
2325 local->suspended = true;
2330 * In case of hw_restart during suspend (without wowlan),
2331 * cancel restart work, as we are reconfiguring the device
2333 * Note that restart_work is scheduled on a frozen workqueue,
2334 * so we can't deadlock in this case.
2336 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2337 cancel_work_sync(&local->restart_work);
2339 local->started = false;
2342 * Upon resume hardware can sometimes be goofy due to
2343 * various platform / driver / bus issues, so restarting
2344 * the device may at times not work immediately. Propagate
2347 res = drv_start(local);
2350 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2352 WARN(1, "Hardware became unavailable during restart.\n");
2353 ieee80211_handle_reconfig_failure(local);
2357 /* setup fragmentation threshold */
2358 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2360 /* setup RTS threshold */
2361 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2363 /* reset coverage class */
2364 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2366 ieee80211_led_radio(local, true);
2367 ieee80211_mod_tpt_led_trig(local,
2368 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2370 /* add interfaces */
2371 sdata = rtnl_dereference(local->monitor_sdata);
2373 /* in HW restart it exists already */
2374 WARN_ON(local->resuming);
2375 res = drv_add_interface(local, sdata);
2377 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2383 list_for_each_entry(sdata, &local->interfaces, list) {
2384 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2385 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2386 ieee80211_sdata_running(sdata)) {
2387 res = drv_add_interface(local, sdata);
2393 /* If adding any of the interfaces failed above, roll back and
2397 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2399 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2400 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2401 ieee80211_sdata_running(sdata))
2402 drv_remove_interface(local, sdata);
2403 ieee80211_handle_reconfig_failure(local);
2407 /* add channel contexts */
2408 if (local->use_chanctx) {
2409 mutex_lock(&local->chanctx_mtx);
2410 list_for_each_entry(ctx, &local->chanctx_list, list)
2411 if (ctx->replace_state !=
2412 IEEE80211_CHANCTX_REPLACES_OTHER)
2413 WARN_ON(drv_add_chanctx(local, ctx));
2414 mutex_unlock(&local->chanctx_mtx);
2416 sdata = rtnl_dereference(local->monitor_sdata);
2417 if (sdata && ieee80211_sdata_running(sdata))
2418 ieee80211_assign_chanctx(local, sdata);
2421 /* reconfigure hardware */
2422 ieee80211_hw_config(local, ~0);
2424 ieee80211_configure_filter(local);
2426 /* Finally also reconfigure all the BSS information */
2427 list_for_each_entry(sdata, &local->interfaces, list) {
2430 if (!ieee80211_sdata_running(sdata))
2433 ieee80211_assign_chanctx(local, sdata);
2435 switch (sdata->vif.type) {
2436 case NL80211_IFTYPE_AP_VLAN:
2437 case NL80211_IFTYPE_MONITOR:
2439 case NL80211_IFTYPE_ADHOC:
2440 if (sdata->vif.bss_conf.ibss_joined)
2441 WARN_ON(drv_join_ibss(local, sdata));
2444 ieee80211_reconfig_stations(sdata);
2446 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2447 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2448 drv_conf_tx(local, sdata, i,
2449 &sdata->tx_conf[i]);
2453 /* common change flags for all interface types */
2454 changed = BSS_CHANGED_ERP_CTS_PROT |
2455 BSS_CHANGED_ERP_PREAMBLE |
2456 BSS_CHANGED_ERP_SLOT |
2458 BSS_CHANGED_BASIC_RATES |
2459 BSS_CHANGED_BEACON_INT |
2464 BSS_CHANGED_TXPOWER |
2465 BSS_CHANGED_MCAST_RATE;
2467 if (sdata->vif.mu_mimo_owner)
2468 changed |= BSS_CHANGED_MU_GROUPS;
2470 switch (sdata->vif.type) {
2471 case NL80211_IFTYPE_STATION:
2472 changed |= BSS_CHANGED_ASSOC |
2473 BSS_CHANGED_ARP_FILTER |
2476 /* Re-send beacon info report to the driver */
2477 if (sdata->u.mgd.have_beacon)
2478 changed |= BSS_CHANGED_BEACON_INFO;
2480 if (sdata->vif.bss_conf.max_idle_period ||
2481 sdata->vif.bss_conf.protected_keep_alive)
2482 changed |= BSS_CHANGED_KEEP_ALIVE;
2485 ieee80211_bss_info_change_notify(sdata, changed);
2486 sdata_unlock(sdata);
2488 case NL80211_IFTYPE_OCB:
2489 changed |= BSS_CHANGED_OCB;
2490 ieee80211_bss_info_change_notify(sdata, changed);
2492 case NL80211_IFTYPE_ADHOC:
2493 changed |= BSS_CHANGED_IBSS;
2495 case NL80211_IFTYPE_AP:
2496 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2498 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2499 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2500 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2501 changed |= BSS_CHANGED_FTM_RESPONDER;
2503 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2504 changed |= BSS_CHANGED_AP_PROBE_RESP;
2506 if (rcu_access_pointer(sdata->u.ap.beacon))
2507 drv_start_ap(local, sdata);
2510 case NL80211_IFTYPE_MESH_POINT:
2511 if (sdata->vif.bss_conf.enable_beacon) {
2512 changed |= BSS_CHANGED_BEACON |
2513 BSS_CHANGED_BEACON_ENABLED;
2514 ieee80211_bss_info_change_notify(sdata, changed);
2517 case NL80211_IFTYPE_NAN:
2518 res = ieee80211_reconfig_nan(sdata);
2520 ieee80211_handle_reconfig_failure(local);
2524 case NL80211_IFTYPE_WDS:
2525 case NL80211_IFTYPE_AP_VLAN:
2526 case NL80211_IFTYPE_MONITOR:
2527 case NL80211_IFTYPE_P2P_DEVICE:
2530 case NL80211_IFTYPE_UNSPECIFIED:
2531 case NUM_NL80211_IFTYPES:
2532 case NL80211_IFTYPE_P2P_CLIENT:
2533 case NL80211_IFTYPE_P2P_GO:
2539 ieee80211_recalc_ps(local);
2542 * The sta might be in psm against the ap (e.g. because
2543 * this was the state before a hw restart), so we
2544 * explicitly send a null packet in order to make sure
2545 * it'll sync against the ap (and get out of psm).
2547 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2548 list_for_each_entry(sdata, &local->interfaces, list) {
2549 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2551 if (!sdata->u.mgd.associated)
2554 ieee80211_send_nullfunc(local, sdata, false);
2558 /* APs are now beaconing, add back stations */
2559 mutex_lock(&local->sta_mtx);
2560 list_for_each_entry(sta, &local->sta_list, list) {
2561 enum ieee80211_sta_state state;
2566 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2567 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2570 for (state = IEEE80211_STA_NOTEXIST;
2571 state < sta->sta_state; state++)
2572 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2575 mutex_unlock(&local->sta_mtx);
2578 list_for_each_entry(sdata, &local->interfaces, list)
2579 ieee80211_reenable_keys(sdata);
2581 /* Reconfigure sched scan if it was interrupted by FW restart */
2582 mutex_lock(&local->mtx);
2583 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2584 lockdep_is_held(&local->mtx));
2585 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2586 lockdep_is_held(&local->mtx));
2587 if (sched_scan_sdata && sched_scan_req)
2589 * Sched scan stopped, but we don't want to report it. Instead,
2590 * we're trying to reschedule. However, if more than one scan
2591 * plan was set, we cannot reschedule since we don't know which
2592 * scan plan was currently running (and some scan plans may have
2593 * already finished).
2595 if (sched_scan_req->n_scan_plans > 1 ||
2596 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2598 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2599 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2600 sched_scan_stopped = true;
2602 mutex_unlock(&local->mtx);
2604 if (sched_scan_stopped)
2605 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
2609 if (local->monitors == local->open_count && local->monitors > 0)
2610 ieee80211_add_virtual_monitor(local);
2613 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2614 * sessions can be established after a resume.
2616 * Also tear down aggregation sessions since reconfiguring
2617 * them in a hardware restart scenario is not easily done
2618 * right now, and the hardware will have lost information
2619 * about the sessions, but we and the AP still think they
2620 * are active. This is really a workaround though.
2622 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2623 mutex_lock(&local->sta_mtx);
2625 list_for_each_entry(sta, &local->sta_list, list) {
2626 if (!local->resuming)
2627 ieee80211_sta_tear_down_BA_sessions(
2628 sta, AGG_STOP_LOCAL_REQUEST);
2629 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2632 mutex_unlock(&local->sta_mtx);
2635 if (local->in_reconfig) {
2636 local->in_reconfig = false;
2639 /* Restart deferred ROCs */
2640 mutex_lock(&local->mtx);
2641 ieee80211_start_next_roc(local);
2642 mutex_unlock(&local->mtx);
2644 /* Requeue all works */
2645 list_for_each_entry(sdata, &local->interfaces, list)
2646 ieee80211_queue_work(&local->hw, &sdata->work);
2649 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2650 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2654 * If this is for hw restart things are still running.
2655 * We may want to change that later, however.
2657 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2658 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2664 /* first set suspended false, then resuming */
2665 local->suspended = false;
2667 local->resuming = false;
2669 ieee80211_flush_completed_scan(local, false);
2671 if (local->open_count && !reconfig_due_to_wowlan)
2672 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2674 list_for_each_entry(sdata, &local->interfaces, list) {
2675 if (!ieee80211_sdata_running(sdata))
2677 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2678 ieee80211_sta_restart(sdata);
2681 mod_timer(&local->sta_cleanup, jiffies + 1);
2689 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2691 struct ieee80211_sub_if_data *sdata;
2692 struct ieee80211_local *local;
2693 struct ieee80211_key *key;
2698 sdata = vif_to_sdata(vif);
2699 local = sdata->local;
2701 if (WARN_ON(!local->resuming))
2704 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2707 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2709 mutex_lock(&local->key_mtx);
2710 list_for_each_entry(key, &sdata->key_list, list)
2711 key->flags |= KEY_FLAG_TAINTED;
2712 mutex_unlock(&local->key_mtx);
2714 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2716 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2718 struct ieee80211_local *local = sdata->local;
2719 struct ieee80211_chanctx_conf *chanctx_conf;
2720 struct ieee80211_chanctx *chanctx;
2722 mutex_lock(&local->chanctx_mtx);
2724 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2725 lockdep_is_held(&local->chanctx_mtx));
2728 * This function can be called from a work, thus it may be possible
2729 * that the chanctx_conf is removed (due to a disconnection, for
2731 * So nothing should be done in such case.
2736 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2737 ieee80211_recalc_smps_chanctx(local, chanctx);
2739 mutex_unlock(&local->chanctx_mtx);
2742 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2744 struct ieee80211_local *local = sdata->local;
2745 struct ieee80211_chanctx_conf *chanctx_conf;
2746 struct ieee80211_chanctx *chanctx;
2748 mutex_lock(&local->chanctx_mtx);
2750 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2751 lockdep_is_held(&local->chanctx_mtx));
2753 if (WARN_ON_ONCE(!chanctx_conf))
2756 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2757 ieee80211_recalc_chanctx_min_def(local, chanctx);
2759 mutex_unlock(&local->chanctx_mtx);
2762 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2764 size_t pos = offset;
2766 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2767 pos += 2 + ies[pos + 1];
2772 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2776 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2778 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2782 * Scale up threshold values before storing it, as the RSSI averaging
2783 * algorithm uses a scaled up value as well. Change this scaling
2784 * factor if the RSSI averaging algorithm changes.
2786 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2787 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2790 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2794 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2796 WARN_ON(rssi_min_thold == rssi_max_thold ||
2797 rssi_min_thold > rssi_max_thold);
2799 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2802 EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2804 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2806 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2808 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2810 EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2812 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2817 *pos++ = WLAN_EID_HT_CAPABILITY;
2818 *pos++ = sizeof(struct ieee80211_ht_cap);
2819 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2821 /* capability flags */
2822 tmp = cpu_to_le16(cap);
2823 memcpy(pos, &tmp, sizeof(u16));
2826 /* AMPDU parameters */
2827 *pos++ = ht_cap->ampdu_factor |
2828 (ht_cap->ampdu_density <<
2829 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2832 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2833 pos += sizeof(ht_cap->mcs);
2835 /* extended capabilities */
2836 pos += sizeof(__le16);
2838 /* BF capabilities */
2839 pos += sizeof(__le32);
2841 /* antenna selection */
2847 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2852 *pos++ = WLAN_EID_VHT_CAPABILITY;
2853 *pos++ = sizeof(struct ieee80211_vht_cap);
2854 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2856 /* capability flags */
2857 tmp = cpu_to_le32(cap);
2858 memcpy(pos, &tmp, sizeof(u32));
2862 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2863 pos += sizeof(vht_cap->vht_mcs);
2868 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2870 const struct ieee80211_sta_he_cap *he_cap;
2871 struct ieee80211_supported_band *sband;
2874 sband = ieee80211_get_sband(sdata);
2878 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2882 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2884 sizeof(he_cap->he_cap_elem) + n +
2885 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2886 he_cap->he_cap_elem.phy_cap_info);
2889 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2890 const struct ieee80211_sta_he_cap *he_cap,
2897 /* Make sure we have place for the IE */
2899 * TODO: the 1 added is because this temporarily is under the EXTENSION
2900 * IE. Get rid of it when it moves.
2905 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2907 sizeof(he_cap->he_cap_elem) + n +
2908 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2909 he_cap->he_cap_elem.phy_cap_info);
2911 if ((end - pos) < ie_len)
2914 *pos++ = WLAN_EID_EXTENSION;
2915 pos++; /* We'll set the size later below */
2916 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2919 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2920 pos += sizeof(he_cap->he_cap_elem);
2922 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2925 /* Check if PPE Threshold should be present */
2926 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2927 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2931 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2932 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2934 n = hweight8(he_cap->ppe_thres[0] &
2935 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2936 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2937 IEEE80211_PPE_THRES_NSS_POS));
2940 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2943 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2944 n = DIV_ROUND_UP(n, 8);
2946 /* Copy PPE Thresholds */
2947 memcpy(pos, &he_cap->ppe_thres, n);
2951 orig_pos[1] = (pos - orig_pos) - 2;
2955 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2956 struct sk_buff *skb)
2958 struct ieee80211_supported_band *sband;
2959 const struct ieee80211_sband_iftype_data *iftd;
2960 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2964 sband = ieee80211_get_sband(sdata);
2968 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2972 /* Check for device HE 6 GHz capability before adding element */
2973 if (!iftd->he_6ghz_capa.capa)
2976 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2977 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2979 switch (sdata->smps_mode) {
2980 case IEEE80211_SMPS_AUTOMATIC:
2981 case IEEE80211_SMPS_NUM_MODES:
2984 case IEEE80211_SMPS_OFF:
2985 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2986 IEEE80211_HE_6GHZ_CAP_SM_PS);
2988 case IEEE80211_SMPS_STATIC:
2989 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2990 IEEE80211_HE_6GHZ_CAP_SM_PS);
2992 case IEEE80211_SMPS_DYNAMIC:
2993 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2994 IEEE80211_HE_6GHZ_CAP_SM_PS);
2998 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2999 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3000 pos + 2 + 1 + sizeof(cap));
3003 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3004 const struct cfg80211_chan_def *chandef,
3005 u16 prot_mode, bool rifs_mode)
3007 struct ieee80211_ht_operation *ht_oper;
3008 /* Build HT Information */
3009 *pos++ = WLAN_EID_HT_OPERATION;
3010 *pos++ = sizeof(struct ieee80211_ht_operation);
3011 ht_oper = (struct ieee80211_ht_operation *)pos;
3012 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3013 chandef->chan->center_freq);
3014 switch (chandef->width) {
3015 case NL80211_CHAN_WIDTH_160:
3016 case NL80211_CHAN_WIDTH_80P80:
3017 case NL80211_CHAN_WIDTH_80:
3018 case NL80211_CHAN_WIDTH_40:
3019 if (chandef->center_freq1 > chandef->chan->center_freq)
3020 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3022 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3025 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3028 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3029 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3030 chandef->width != NL80211_CHAN_WIDTH_20)
3031 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3034 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3036 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3037 ht_oper->stbc_param = 0x0000;
3039 /* It seems that Basic MCS set and Supported MCS set
3040 are identical for the first 10 bytes */
3041 memset(&ht_oper->basic_set, 0, 16);
3042 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3044 return pos + sizeof(struct ieee80211_ht_operation);
3047 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3048 const struct cfg80211_chan_def *chandef)
3050 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3051 *pos++ = 3; /* IE length */
3052 /* New channel width */
3053 switch (chandef->width) {
3054 case NL80211_CHAN_WIDTH_80:
3055 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3057 case NL80211_CHAN_WIDTH_160:
3058 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3060 case NL80211_CHAN_WIDTH_80P80:
3061 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3064 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3067 /* new center frequency segment 0 */
3068 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3069 /* new center frequency segment 1 */
3070 if (chandef->center_freq2)
3071 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3076 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3077 const struct cfg80211_chan_def *chandef)
3079 struct ieee80211_vht_operation *vht_oper;
3081 *pos++ = WLAN_EID_VHT_OPERATION;
3082 *pos++ = sizeof(struct ieee80211_vht_operation);
3083 vht_oper = (struct ieee80211_vht_operation *)pos;
3084 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3085 chandef->center_freq1);
3086 if (chandef->center_freq2)
3087 vht_oper->center_freq_seg1_idx =
3088 ieee80211_frequency_to_channel(chandef->center_freq2);
3090 vht_oper->center_freq_seg1_idx = 0x00;
3092 switch (chandef->width) {
3093 case NL80211_CHAN_WIDTH_160:
3095 * Convert 160 MHz channel width to new style as interop
3098 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3099 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3100 if (chandef->chan->center_freq < chandef->center_freq1)
3101 vht_oper->center_freq_seg0_idx -= 8;
3103 vht_oper->center_freq_seg0_idx += 8;
3105 case NL80211_CHAN_WIDTH_80P80:
3107 * Convert 80+80 MHz channel width to new style as interop
3110 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3112 case NL80211_CHAN_WIDTH_80:
3113 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3116 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3120 /* don't require special VHT peer rates */
3121 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3123 return pos + sizeof(struct ieee80211_vht_operation);
3126 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3128 struct ieee80211_he_operation *he_oper;
3129 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3131 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3133 if (chandef->chan->band == NL80211_BAND_6GHZ)
3134 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3136 *pos++ = WLAN_EID_EXTENSION;
3138 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3141 he_oper_params |= u32_encode_bits(1023, /* disabled */
3142 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3143 he_oper_params |= u32_encode_bits(1,
3144 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3145 he_oper_params |= u32_encode_bits(1,
3146 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3147 if (chandef->chan->band == NL80211_BAND_6GHZ)
3148 he_oper_params |= u32_encode_bits(1,
3149 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3151 he_oper = (struct ieee80211_he_operation *)pos;
3152 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3154 /* don't require special HE peer rates */
3155 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3156 pos += sizeof(struct ieee80211_he_operation);
3158 if (chandef->chan->band != NL80211_BAND_6GHZ)
3161 /* TODO add VHT operational */
3162 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3163 he_6ghz_op->minrate = 6; /* 6 Mbps */
3164 he_6ghz_op->primary =
3165 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3167 ieee80211_frequency_to_channel(chandef->center_freq1);
3168 if (chandef->center_freq2)
3170 ieee80211_frequency_to_channel(chandef->center_freq2);
3172 he_6ghz_op->ccfs1 = 0;
3174 switch (chandef->width) {
3175 case NL80211_CHAN_WIDTH_160:
3176 /* Convert 160 MHz channel width to new style as interop
3179 he_6ghz_op->control =
3180 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3181 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3182 if (chandef->chan->center_freq < chandef->center_freq1)
3183 he_6ghz_op->ccfs0 -= 8;
3185 he_6ghz_op->ccfs0 += 8;
3187 case NL80211_CHAN_WIDTH_80P80:
3188 he_6ghz_op->control =
3189 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3191 case NL80211_CHAN_WIDTH_80:
3192 he_6ghz_op->control =
3193 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3195 case NL80211_CHAN_WIDTH_40:
3196 he_6ghz_op->control =
3197 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3200 he_6ghz_op->control =
3201 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3205 pos += sizeof(struct ieee80211_he_6ghz_oper);
3211 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3212 struct cfg80211_chan_def *chandef)
3214 enum nl80211_channel_type channel_type;
3219 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3220 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3221 channel_type = NL80211_CHAN_HT20;
3223 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3224 channel_type = NL80211_CHAN_HT40PLUS;
3226 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3227 channel_type = NL80211_CHAN_HT40MINUS;
3230 channel_type = NL80211_CHAN_NO_HT;
3234 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3238 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3239 const struct ieee80211_vht_operation *oper,
3240 const struct ieee80211_ht_operation *htop,
3241 struct cfg80211_chan_def *chandef)
3243 struct cfg80211_chan_def new = *chandef;
3245 int ccfs0, ccfs1, ccfs2;
3248 bool support_80_80 = false;
3249 bool support_160 = false;
3250 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3251 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3252 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3253 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3258 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3259 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3260 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3261 support_80_80 = ((vht_cap &
3262 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3263 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3264 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3265 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3266 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3267 ccfs0 = oper->center_freq_seg0_idx;
3268 ccfs1 = oper->center_freq_seg1_idx;
3269 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3270 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3271 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3275 /* if not supported, parse as though we didn't understand it */
3276 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3277 ext_nss_bw_supp = 0;
3280 * Cf. IEEE 802.11 Table 9-250
3282 * We really just consider that because it's inefficient to connect
3283 * at a higher bandwidth than we'll actually be able to use.
3285 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3289 support_160 = false;
3290 support_80_80 = false;
3293 support_80_80 = false;
3316 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3317 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3319 switch (oper->chan_width) {
3320 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3321 /* just use HT information directly */
3323 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3324 new.width = NL80211_CHAN_WIDTH_80;
3325 new.center_freq1 = cf0;
3326 /* If needed, adjust based on the newer interop workaround. */
3330 diff = abs(ccf1 - ccf0);
3331 if ((diff == 8) && support_160) {
3332 new.width = NL80211_CHAN_WIDTH_160;
3333 new.center_freq1 = cf1;
3334 } else if ((diff > 8) && support_80_80) {
3335 new.width = NL80211_CHAN_WIDTH_80P80;
3336 new.center_freq2 = cf1;
3340 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3341 /* deprecated encoding */
3342 new.width = NL80211_CHAN_WIDTH_160;
3343 new.center_freq1 = cf0;
3345 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3346 /* deprecated encoding */
3347 new.width = NL80211_CHAN_WIDTH_80P80;
3348 new.center_freq1 = cf0;
3349 new.center_freq2 = cf1;
3355 if (!cfg80211_chandef_valid(&new))
3362 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3363 const struct ieee80211_he_operation *he_oper,
3364 struct cfg80211_chan_def *chandef)
3366 struct ieee80211_local *local = sdata->local;
3367 struct ieee80211_supported_band *sband;
3368 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3369 const struct ieee80211_sta_he_cap *he_cap;
3370 struct cfg80211_chan_def he_chandef = *chandef;
3371 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3372 bool support_80_80, support_160;
3376 if (chandef->chan->band != NL80211_BAND_6GHZ)
3379 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3381 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3383 sdata_info(sdata, "Missing iftype sband data/HE cap");
3387 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3390 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3393 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3397 "HE is not advertised on (on %d MHz), expect issues\n",
3398 chandef->chan->center_freq);
3402 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3404 if (!he_6ghz_oper) {
3406 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3407 chandef->chan->center_freq);
3411 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3413 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3415 switch (u8_get_bits(he_6ghz_oper->control,
3416 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3417 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3418 he_chandef.width = NL80211_CHAN_WIDTH_20;
3420 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3421 he_chandef.width = NL80211_CHAN_WIDTH_40;
3423 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3424 he_chandef.width = NL80211_CHAN_WIDTH_80;
3426 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3427 he_chandef.width = NL80211_CHAN_WIDTH_80;
3428 if (!he_6ghz_oper->ccfs1)
3430 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3432 he_chandef.width = NL80211_CHAN_WIDTH_160;
3435 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3440 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3441 he_chandef.center_freq1 =
3442 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3445 he_chandef.center_freq1 =
3446 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3448 if (support_80_80 || support_160)
3449 he_chandef.center_freq2 =
3450 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3454 if (!cfg80211_chandef_valid(&he_chandef)) {
3456 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3457 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3459 he_chandef.center_freq1,
3460 he_chandef.center_freq2);
3464 *chandef = he_chandef;
3469 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3470 struct cfg80211_chan_def *chandef)
3477 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3478 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3479 chandef->width = NL80211_CHAN_WIDTH_1;
3481 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3482 chandef->width = NL80211_CHAN_WIDTH_2;
3484 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3485 chandef->width = NL80211_CHAN_WIDTH_4;
3487 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3488 chandef->width = NL80211_CHAN_WIDTH_8;
3490 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3491 chandef->width = NL80211_CHAN_WIDTH_16;
3497 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3498 NL80211_BAND_S1GHZ);
3499 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3500 chandef->freq1_offset = oper_freq % 1000;
3505 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3506 const struct ieee80211_supported_band *sband,
3507 const u8 *srates, int srates_len, u32 *rates)
3509 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3510 int shift = ieee80211_chandef_get_shift(chandef);
3511 struct ieee80211_rate *br;
3512 int brate, rate, i, j, count = 0;
3516 for (i = 0; i < srates_len; i++) {
3517 rate = srates[i] & 0x7f;
3519 for (j = 0; j < sband->n_bitrates; j++) {
3520 br = &sband->bitrates[j];
3521 if ((rate_flags & br->flags) != rate_flags)
3524 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3525 if (brate == rate) {
3535 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3536 struct sk_buff *skb, bool need_basic,
3537 enum nl80211_band band)
3539 struct ieee80211_local *local = sdata->local;
3540 struct ieee80211_supported_band *sband;
3543 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3546 shift = ieee80211_vif_get_shift(&sdata->vif);
3547 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3548 sband = local->hw.wiphy->bands[band];
3550 for (i = 0; i < sband->n_bitrates; i++) {
3551 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3558 if (skb_tailroom(skb) < rates + 2)
3561 pos = skb_put(skb, rates + 2);
3562 *pos++ = WLAN_EID_SUPP_RATES;
3564 for (i = 0; i < rates; i++) {
3566 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3569 if (need_basic && basic_rates & BIT(i))
3571 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3573 *pos++ = basic | (u8) rate;
3579 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3580 struct sk_buff *skb, bool need_basic,
3581 enum nl80211_band band)
3583 struct ieee80211_local *local = sdata->local;
3584 struct ieee80211_supported_band *sband;
3586 u8 i, exrates, *pos;
3587 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3590 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3591 shift = ieee80211_vif_get_shift(&sdata->vif);
3593 sband = local->hw.wiphy->bands[band];
3595 for (i = 0; i < sband->n_bitrates; i++) {
3596 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3606 if (skb_tailroom(skb) < exrates + 2)
3610 pos = skb_put(skb, exrates + 2);
3611 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3613 for (i = 8; i < sband->n_bitrates; i++) {
3615 if ((rate_flags & sband->bitrates[i].flags)
3618 if (need_basic && basic_rates & BIT(i))
3620 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3622 *pos++ = basic | (u8) rate;
3628 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3630 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3631 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3633 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3634 /* non-managed type inferfaces */
3637 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3639 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3641 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3646 /* TODO: consider rx_highest */
3648 if (mcs->rx_mask[3])
3650 if (mcs->rx_mask[2])
3652 if (mcs->rx_mask[1])
3658 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3659 * @local: mac80211 hw info struct
3660 * @status: RX status
3661 * @mpdu_len: total MPDU length (including FCS)
3662 * @mpdu_offset: offset into MPDU to calculate timestamp at
3664 * This function calculates the RX timestamp at the given MPDU offset, taking
3665 * into account what the RX timestamp was. An offset of 0 will just normalize
3666 * the timestamp to TSF at beginning of MPDU reception.
3668 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3669 struct ieee80211_rx_status *status,
3670 unsigned int mpdu_len,
3671 unsigned int mpdu_offset)
3673 u64 ts = status->mactime;
3674 struct rate_info ri;
3677 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3680 memset(&ri, 0, sizeof(ri));
3684 /* Fill cfg80211 rate info */
3685 switch (status->encoding) {
3687 ri.mcs = status->rate_idx;
3688 ri.flags |= RATE_INFO_FLAGS_MCS;
3689 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3690 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3693 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3694 ri.mcs = status->rate_idx;
3695 ri.nss = status->nss;
3696 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3697 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3702 case RX_ENC_LEGACY: {
3703 struct ieee80211_supported_band *sband;
3707 switch (status->bw) {
3708 case RATE_INFO_BW_10:
3711 case RATE_INFO_BW_5:
3716 sband = local->hw.wiphy->bands[status->band];
3717 bitrate = sband->bitrates[status->rate_idx].bitrate;
3718 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3720 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3721 /* TODO: handle HT/VHT preambles */
3722 if (status->band == NL80211_BAND_5GHZ) {
3725 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3735 rate = cfg80211_calculate_bitrate(&ri);
3736 if (WARN_ONCE(!rate,
3737 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3738 (unsigned long long)status->flag, status->rate_idx,
3742 /* rewind from end of MPDU */
3743 if (status->flag & RX_FLAG_MACTIME_END)
3744 ts -= mpdu_len * 8 * 10 / rate;
3746 ts += mpdu_offset * 8 * 10 / rate;
3751 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3753 struct ieee80211_sub_if_data *sdata;
3754 struct cfg80211_chan_def chandef;
3756 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3759 mutex_lock(&local->mtx);
3760 list_for_each_entry(sdata, &local->interfaces, list) {
3761 /* it might be waiting for the local->mtx, but then
3762 * by the time it gets it, sdata->wdev.cac_started
3763 * will no longer be true
3765 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3767 if (sdata->wdev.cac_started) {
3768 chandef = sdata->vif.bss_conf.chandef;
3769 ieee80211_vif_release_channel(sdata);
3770 cfg80211_cac_event(sdata->dev,
3772 NL80211_RADAR_CAC_ABORTED,
3776 mutex_unlock(&local->mtx);
3779 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3781 struct ieee80211_local *local =
3782 container_of(work, struct ieee80211_local, radar_detected_work);
3783 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3784 struct ieee80211_chanctx *ctx;
3785 int num_chanctx = 0;
3787 mutex_lock(&local->chanctx_mtx);
3788 list_for_each_entry(ctx, &local->chanctx_list, list) {
3789 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3793 chandef = ctx->conf.def;
3795 mutex_unlock(&local->chanctx_mtx);
3798 ieee80211_dfs_cac_cancel(local);
3801 if (num_chanctx > 1)
3802 /* XXX: multi-channel is not supported yet */
3805 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3808 void ieee80211_radar_detected(struct ieee80211_hw *hw)
3810 struct ieee80211_local *local = hw_to_local(hw);
3812 trace_api_radar_detected(local);
3814 schedule_work(&local->radar_detected_work);
3816 EXPORT_SYMBOL(ieee80211_radar_detected);
3818 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3824 case NL80211_CHAN_WIDTH_20:
3825 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3826 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3828 case NL80211_CHAN_WIDTH_40:
3829 c->width = NL80211_CHAN_WIDTH_20;
3830 c->center_freq1 = c->chan->center_freq;
3831 ret = IEEE80211_STA_DISABLE_40MHZ |
3832 IEEE80211_STA_DISABLE_VHT;
3834 case NL80211_CHAN_WIDTH_80:
3835 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3839 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3840 c->width = NL80211_CHAN_WIDTH_40;
3841 ret = IEEE80211_STA_DISABLE_VHT;
3843 case NL80211_CHAN_WIDTH_80P80:
3844 c->center_freq2 = 0;
3845 c->width = NL80211_CHAN_WIDTH_80;
3846 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3847 IEEE80211_STA_DISABLE_160MHZ;
3849 case NL80211_CHAN_WIDTH_160:
3851 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3854 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3855 c->width = NL80211_CHAN_WIDTH_80;
3856 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3857 IEEE80211_STA_DISABLE_160MHZ;
3860 case NL80211_CHAN_WIDTH_20_NOHT:
3862 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3863 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3865 case NL80211_CHAN_WIDTH_1:
3866 case NL80211_CHAN_WIDTH_2:
3867 case NL80211_CHAN_WIDTH_4:
3868 case NL80211_CHAN_WIDTH_8:
3869 case NL80211_CHAN_WIDTH_16:
3870 case NL80211_CHAN_WIDTH_5:
3871 case NL80211_CHAN_WIDTH_10:
3874 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3878 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3884 * Returns true if smps_mode_new is strictly more restrictive than
3887 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3888 enum ieee80211_smps_mode smps_mode_new)
3890 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3891 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3894 switch (smps_mode_old) {
3895 case IEEE80211_SMPS_STATIC:
3897 case IEEE80211_SMPS_DYNAMIC:
3898 return smps_mode_new == IEEE80211_SMPS_STATIC;
3899 case IEEE80211_SMPS_OFF:
3900 return smps_mode_new != IEEE80211_SMPS_OFF;
3908 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3909 struct cfg80211_csa_settings *csa_settings)
3911 struct sk_buff *skb;
3912 struct ieee80211_mgmt *mgmt;
3913 struct ieee80211_local *local = sdata->local;
3915 int hdr_len = offsetofend(struct ieee80211_mgmt,
3916 u.action.u.chan_switch);
3919 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3920 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3923 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3924 5 + /* channel switch announcement element */
3925 3 + /* secondary channel offset element */
3926 5 + /* wide bandwidth channel switch announcement */
3927 8); /* mesh channel switch parameters element */
3931 skb_reserve(skb, local->tx_headroom);
3932 mgmt = skb_put_zero(skb, hdr_len);
3933 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3934 IEEE80211_STYPE_ACTION);
3936 eth_broadcast_addr(mgmt->da);
3937 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3938 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3939 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3941 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3942 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3944 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3945 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3946 pos = skb_put(skb, 5);
3947 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3948 *pos++ = 3; /* IE length */
3949 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3950 freq = csa_settings->chandef.chan->center_freq;
3951 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3952 *pos++ = csa_settings->count; /* count */
3954 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3955 enum nl80211_channel_type ch_type;
3958 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3959 *pos++ = 1; /* IE length */
3960 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3961 if (ch_type == NL80211_CHAN_HT40PLUS)
3962 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3964 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3967 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3968 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3971 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3972 *pos++ = 6; /* IE length */
3973 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3974 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3975 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3976 *pos++ |= csa_settings->block_tx ?
3977 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3978 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3980 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
3984 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3985 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3986 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3988 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3991 ieee80211_tx_skb(sdata, skb);
3995 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3997 return !(cs == NULL || cs->cipher == 0 ||
3998 cs->hdr_len < cs->pn_len + cs->pn_off ||
3999 cs->hdr_len <= cs->key_idx_off ||
4000 cs->key_idx_shift > 7 ||
4001 cs->key_idx_mask == 0);
4004 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4008 /* Ensure we have enough iftype bitmap space for all iftype values */
4009 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4011 for (i = 0; i < n; i++)
4012 if (!ieee80211_cs_valid(&cs[i]))
4018 const struct ieee80211_cipher_scheme *
4019 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4020 enum nl80211_iftype iftype)
4022 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4023 int n = local->hw.n_cipher_schemes;
4025 const struct ieee80211_cipher_scheme *cs = NULL;
4027 for (i = 0; i < n; i++) {
4028 if (l[i].cipher == cipher) {
4034 if (!cs || !(cs->iftype & BIT(iftype)))
4040 int ieee80211_cs_headroom(struct ieee80211_local *local,
4041 struct cfg80211_crypto_settings *crypto,
4042 enum nl80211_iftype iftype)
4044 const struct ieee80211_cipher_scheme *cs;
4045 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4048 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4049 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4052 if (cs && headroom < cs->hdr_len)
4053 headroom = cs->hdr_len;
4056 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4057 if (cs && headroom < cs->hdr_len)
4058 headroom = cs->hdr_len;
4064 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4066 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4073 if (data->count[i] == 1)
4076 if (data->desc[i].interval == 0)
4079 /* End time is in the past, check for repetitions */
4080 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4081 if (data->count[i] < 255) {
4082 if (data->count[i] <= skip) {
4087 data->count[i] -= skip;
4090 data->desc[i].start += skip * data->desc[i].interval;
4096 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4102 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4105 if (!data->count[i])
4108 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4111 cur = data->desc[i].start - tsf;
4115 cur = data->desc[i].start + data->desc[i].duration - tsf;
4124 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4129 * arbitrary limit, used to avoid infinite loops when combined NoA
4130 * descriptors cover the full time period.
4134 ieee80211_extend_absent_time(data, tsf, &offset);
4136 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4140 } while (tries < max_tries);
4145 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4147 u32 next_offset = BIT(31) - 1;
4151 data->has_next_tsf = false;
4152 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4155 if (!data->count[i])
4158 ieee80211_extend_noa_desc(data, tsf, i);
4159 start = data->desc[i].start - tsf;
4161 data->absent |= BIT(i);
4163 if (next_offset > start)
4164 next_offset = start;
4166 data->has_next_tsf = true;
4170 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4172 data->next_tsf = tsf + next_offset;
4174 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4176 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4177 struct ieee80211_noa_data *data, u32 tsf)
4182 memset(data, 0, sizeof(*data));
4184 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4185 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4187 if (!desc->count || !desc->duration)
4190 data->count[i] = desc->count;
4191 data->desc[i].start = le32_to_cpu(desc->start_time);
4192 data->desc[i].duration = le32_to_cpu(desc->duration);
4193 data->desc[i].interval = le32_to_cpu(desc->interval);
4195 if (data->count[i] > 1 &&
4196 data->desc[i].interval < data->desc[i].duration)
4199 ieee80211_extend_noa_desc(data, tsf, i);
4204 ieee80211_update_p2p_noa(data, tsf);
4208 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4210 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4211 struct ieee80211_sub_if_data *sdata)
4213 u64 tsf = drv_get_tsf(local, sdata);
4215 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4216 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4220 if (tsf == -1ULL || !beacon_int || !dtim_period)
4223 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4224 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4228 ps = &sdata->bss->ps;
4229 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4230 ps = &sdata->u.mesh.ps;
4236 * actually finds last dtim_count, mac80211 will update in
4237 * __beacon_add_tim().
4238 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4240 do_div(tsf, beacon_int);
4241 bcns_from_dtim = do_div(tsf, dtim_period);
4242 /* just had a DTIM */
4243 if (!bcns_from_dtim)
4246 dtim_count = dtim_period - bcns_from_dtim;
4248 ps->dtim_count = dtim_count;
4251 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4252 struct ieee80211_chanctx *ctx)
4254 struct ieee80211_sub_if_data *sdata;
4255 u8 radar_detect = 0;
4257 lockdep_assert_held(&local->chanctx_mtx);
4259 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4262 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4263 if (sdata->reserved_radar_required)
4264 radar_detect |= BIT(sdata->reserved_chandef.width);
4267 * An in-place reservation context should not have any assigned vifs
4268 * until it replaces the other context.
4270 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4271 !list_empty(&ctx->assigned_vifs));
4273 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4274 if (sdata->radar_required)
4275 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4277 return radar_detect;
4280 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4281 const struct cfg80211_chan_def *chandef,
4282 enum ieee80211_chanctx_mode chanmode,
4285 struct ieee80211_local *local = sdata->local;
4286 struct ieee80211_sub_if_data *sdata_iter;
4287 enum nl80211_iftype iftype = sdata->wdev.iftype;
4288 struct ieee80211_chanctx *ctx;
4290 struct iface_combination_params params = {
4291 .radar_detect = radar_detect,
4294 lockdep_assert_held(&local->chanctx_mtx);
4296 if (WARN_ON(hweight32(radar_detect) > 1))
4299 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4303 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4306 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4307 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4309 * always passing this is harmless, since it'll be the
4310 * same value that cfg80211 finds if it finds the same
4311 * interface ... and that's always allowed
4313 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4316 /* Always allow software iftypes */
4317 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4324 params.num_different_channels = 1;
4326 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4327 params.iftype_num[iftype] = 1;
4329 list_for_each_entry(ctx, &local->chanctx_list, list) {
4330 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4332 params.radar_detect |=
4333 ieee80211_chanctx_radar_detect(local, ctx);
4334 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4335 params.num_different_channels++;
4338 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4339 cfg80211_chandef_compatible(chandef,
4342 params.num_different_channels++;
4345 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4346 struct wireless_dev *wdev_iter;
4348 wdev_iter = &sdata_iter->wdev;
4350 if (sdata_iter == sdata ||
4351 !ieee80211_sdata_running(sdata_iter) ||
4352 cfg80211_iftype_allowed(local->hw.wiphy,
4353 wdev_iter->iftype, 0, 1))
4356 params.iftype_num[wdev_iter->iftype]++;
4360 if (total == 1 && !params.radar_detect)
4363 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4367 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4370 u32 *max_num_different_channels = data;
4372 *max_num_different_channels = max(*max_num_different_channels,
4373 c->num_different_channels);
4376 int ieee80211_max_num_channels(struct ieee80211_local *local)
4378 struct ieee80211_sub_if_data *sdata;
4379 struct ieee80211_chanctx *ctx;
4380 u32 max_num_different_channels = 1;
4382 struct iface_combination_params params = {0};
4384 lockdep_assert_held(&local->chanctx_mtx);
4386 list_for_each_entry(ctx, &local->chanctx_list, list) {
4387 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4390 params.num_different_channels++;
4392 params.radar_detect |=
4393 ieee80211_chanctx_radar_detect(local, ctx);
4396 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4397 params.iftype_num[sdata->wdev.iftype]++;
4399 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4400 ieee80211_iter_max_chans,
4401 &max_num_different_channels);
4405 return max_num_different_channels;
4408 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4409 struct ieee80211_sta_s1g_cap *caps,
4410 struct sk_buff *skb)
4412 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4413 struct ieee80211_s1g_cap s1g_capab;
4417 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4423 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4424 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4426 /* override the capability info */
4427 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4428 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4430 s1g_capab.capab_info[i] &= ~mask;
4431 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4434 /* then MCS and NSS set */
4435 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4436 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4438 s1g_capab.supp_mcs_nss[i] &= ~mask;
4439 s1g_capab.supp_mcs_nss[i] |=
4440 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4443 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4444 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4445 *pos++ = sizeof(s1g_capab);
4447 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4450 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4451 struct sk_buff *skb)
4453 u8 *pos = skb_put(skb, 3);
4455 *pos++ = WLAN_EID_AID_REQUEST;
4460 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4462 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4463 *buf++ = 7; /* len */
4464 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4467 *buf++ = 2; /* WME */
4468 *buf++ = 0; /* WME info */
4469 *buf++ = 1; /* WME ver */
4470 *buf++ = qosinfo; /* U-APSD no in use */
4475 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4476 unsigned long *frame_cnt,
4477 unsigned long *byte_cnt)
4479 struct txq_info *txqi = to_txq_info(txq);
4480 u32 frag_cnt = 0, frag_bytes = 0;
4481 struct sk_buff *skb;
4483 skb_queue_walk(&txqi->frags, skb) {
4485 frag_bytes += skb->len;
4489 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4492 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4494 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4496 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4497 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4498 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4499 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4500 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4503 u16 ieee80211_encode_usf(int listen_interval)
4505 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4508 /* find greatest USF */
4509 while (usf < IEEE80211_MAX_USF) {
4510 if (listen_interval % listen_int_usf[usf + 1])
4514 ui = listen_interval / listen_int_usf[usf];
4516 /* error if there is a remainder. Should've been checked by user */
4517 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4518 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4519 FIELD_PREP(LISTEN_INT_UI, ui);
4521 return (u16) listen_interval;