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;
953 u8 len = elem->datalen - 1;
955 switch (elem->data[0]) {
956 case WLAN_EID_EXT_HE_MU_EDCA:
957 if (len == sizeof(*elems->mu_edca_param_set)) {
958 elems->mu_edca_param_set = data;
960 *crc = crc32_be(*crc, (void *)elem,
964 case WLAN_EID_EXT_HE_CAPABILITY:
965 elems->he_cap = data;
966 elems->he_cap_len = len;
968 case WLAN_EID_EXT_HE_OPERATION:
969 if (len >= sizeof(*elems->he_operation) &&
970 len == ieee80211_he_oper_size(data) - 1) {
972 *crc = crc32_be(*crc, (void *)elem,
974 elems->he_operation = data;
977 case WLAN_EID_EXT_UORA:
979 elems->uora_element = data;
981 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
983 elems->max_channel_switch_time = data;
985 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
986 if (len == sizeof(*elems->mbssid_config_ie))
987 elems->mbssid_config_ie = data;
989 case WLAN_EID_EXT_HE_SPR:
990 if (len >= sizeof(*elems->he_spr) &&
991 len >= ieee80211_he_spr_size(data))
992 elems->he_spr = data;
994 case WLAN_EID_EXT_HE_6GHZ_CAPA:
995 if (len == sizeof(*elems->he_6ghz_capa))
996 elems->he_6ghz_capa = data;
1002 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1003 struct ieee802_11_elems *elems,
1004 u64 filter, u32 crc,
1005 const struct element *check_inherit)
1007 const struct element *elem;
1008 bool calc_crc = filter != 0;
1009 DECLARE_BITMAP(seen_elems, 256);
1012 bitmap_zero(seen_elems, 256);
1014 for_each_element(elem, start, len) {
1015 bool elem_parse_failed;
1017 u8 elen = elem->datalen;
1018 const u8 *pos = elem->data;
1020 if (check_inherit &&
1021 !cfg80211_is_element_inherited(elem,
1027 case WLAN_EID_SUPP_RATES:
1028 case WLAN_EID_FH_PARAMS:
1029 case WLAN_EID_DS_PARAMS:
1030 case WLAN_EID_CF_PARAMS:
1032 case WLAN_EID_IBSS_PARAMS:
1033 case WLAN_EID_CHALLENGE:
1035 case WLAN_EID_ERP_INFO:
1036 case WLAN_EID_EXT_SUPP_RATES:
1037 case WLAN_EID_HT_CAPABILITY:
1038 case WLAN_EID_HT_OPERATION:
1039 case WLAN_EID_VHT_CAPABILITY:
1040 case WLAN_EID_VHT_OPERATION:
1041 case WLAN_EID_MESH_ID:
1042 case WLAN_EID_MESH_CONFIG:
1043 case WLAN_EID_PEER_MGMT:
1048 case WLAN_EID_CHANNEL_SWITCH:
1049 case WLAN_EID_EXT_CHANSWITCH_ANN:
1050 case WLAN_EID_COUNTRY:
1051 case WLAN_EID_PWR_CONSTRAINT:
1052 case WLAN_EID_TIMEOUT_INTERVAL:
1053 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1054 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1055 case WLAN_EID_CHAN_SWITCH_PARAM:
1056 case WLAN_EID_EXT_CAPABILITY:
1057 case WLAN_EID_CHAN_SWITCH_TIMING:
1058 case WLAN_EID_LINK_ID:
1059 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1061 case WLAN_EID_S1G_BCN_COMPAT:
1062 case WLAN_EID_S1G_CAPABILITIES:
1063 case WLAN_EID_S1G_OPERATION:
1064 case WLAN_EID_AID_RESPONSE:
1065 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1067 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1068 * that if the content gets bigger it might be needed more than once
1070 if (test_bit(id, seen_elems)) {
1071 elems->parse_error = true;
1077 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1078 crc = crc32_be(crc, pos - 2, elen + 2);
1080 elem_parse_failed = false;
1083 case WLAN_EID_LINK_ID:
1084 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
1085 elem_parse_failed = true;
1088 elems->lnk_id = (void *)(pos - 2);
1090 case WLAN_EID_CHAN_SWITCH_TIMING:
1091 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
1092 elem_parse_failed = true;
1095 elems->ch_sw_timing = (void *)pos;
1097 case WLAN_EID_EXT_CAPABILITY:
1098 elems->ext_capab = pos;
1099 elems->ext_capab_len = elen;
1103 elems->ssid_len = elen;
1105 case WLAN_EID_SUPP_RATES:
1106 elems->supp_rates = pos;
1107 elems->supp_rates_len = elen;
1109 case WLAN_EID_DS_PARAMS:
1111 elems->ds_params = pos;
1113 elem_parse_failed = true;
1116 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1117 elems->tim = (void *)pos;
1118 elems->tim_len = elen;
1120 elem_parse_failed = true;
1122 case WLAN_EID_CHALLENGE:
1123 elems->challenge = pos;
1124 elems->challenge_len = elen;
1126 case WLAN_EID_VENDOR_SPECIFIC:
1127 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1129 /* Microsoft OUI (00:50:F2) */
1132 crc = crc32_be(crc, pos - 2, elen + 2);
1134 if (elen >= 5 && pos[3] == 2) {
1135 /* OUI Type 2 - WMM IE */
1137 elems->wmm_info = pos;
1138 elems->wmm_info_len = elen;
1139 } else if (pos[4] == 1) {
1140 elems->wmm_param = pos;
1141 elems->wmm_param_len = elen;
1148 elems->rsn_len = elen;
1150 case WLAN_EID_ERP_INFO:
1152 elems->erp_info = pos;
1154 elem_parse_failed = true;
1156 case WLAN_EID_EXT_SUPP_RATES:
1157 elems->ext_supp_rates = pos;
1158 elems->ext_supp_rates_len = elen;
1160 case WLAN_EID_HT_CAPABILITY:
1161 if (elen >= sizeof(struct ieee80211_ht_cap))
1162 elems->ht_cap_elem = (void *)pos;
1164 elem_parse_failed = true;
1166 case WLAN_EID_HT_OPERATION:
1167 if (elen >= sizeof(struct ieee80211_ht_operation))
1168 elems->ht_operation = (void *)pos;
1170 elem_parse_failed = true;
1172 case WLAN_EID_VHT_CAPABILITY:
1173 if (elen >= sizeof(struct ieee80211_vht_cap))
1174 elems->vht_cap_elem = (void *)pos;
1176 elem_parse_failed = true;
1178 case WLAN_EID_VHT_OPERATION:
1179 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1180 elems->vht_operation = (void *)pos;
1182 crc = crc32_be(crc, pos - 2, elen + 2);
1185 elem_parse_failed = true;
1187 case WLAN_EID_OPMODE_NOTIF:
1189 elems->opmode_notif = pos;
1191 crc = crc32_be(crc, pos - 2, elen + 2);
1194 elem_parse_failed = true;
1196 case WLAN_EID_MESH_ID:
1197 elems->mesh_id = pos;
1198 elems->mesh_id_len = elen;
1200 case WLAN_EID_MESH_CONFIG:
1201 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1202 elems->mesh_config = (void *)pos;
1204 elem_parse_failed = true;
1206 case WLAN_EID_PEER_MGMT:
1207 elems->peering = pos;
1208 elems->peering_len = elen;
1210 case WLAN_EID_MESH_AWAKE_WINDOW:
1212 elems->awake_window = (void *)pos;
1216 elems->preq_len = elen;
1220 elems->prep_len = elen;
1224 elems->perr_len = elen;
1227 if (elen >= sizeof(struct ieee80211_rann_ie))
1228 elems->rann = (void *)pos;
1230 elem_parse_failed = true;
1232 case WLAN_EID_CHANNEL_SWITCH:
1233 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1234 elem_parse_failed = true;
1237 elems->ch_switch_ie = (void *)pos;
1239 case WLAN_EID_EXT_CHANSWITCH_ANN:
1240 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1241 elem_parse_failed = true;
1244 elems->ext_chansw_ie = (void *)pos;
1246 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1247 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1248 elem_parse_failed = true;
1251 elems->sec_chan_offs = (void *)pos;
1253 case WLAN_EID_CHAN_SWITCH_PARAM:
1255 sizeof(*elems->mesh_chansw_params_ie)) {
1256 elem_parse_failed = true;
1259 elems->mesh_chansw_params_ie = (void *)pos;
1261 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1263 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1264 elem_parse_failed = true;
1267 elems->wide_bw_chansw_ie = (void *)pos;
1269 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1271 elem_parse_failed = true;
1275 * This is a bit tricky, but as we only care about
1276 * the wide bandwidth channel switch element, so
1277 * just parse it out manually.
1279 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1282 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1283 elems->wide_bw_chansw_ie =
1286 elem_parse_failed = true;
1289 case WLAN_EID_COUNTRY:
1290 elems->country_elem = pos;
1291 elems->country_elem_len = elen;
1293 case WLAN_EID_PWR_CONSTRAINT:
1295 elem_parse_failed = true;
1298 elems->pwr_constr_elem = pos;
1300 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1301 /* Lots of different options exist, but we only care
1302 * about the Dynamic Transmit Power Control element.
1303 * First check for the Cisco OUI, then for the DTPC
1307 elem_parse_failed = true;
1311 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1312 pos[2] != 0x96 || pos[3] != 0x00)
1316 elem_parse_failed = true;
1321 crc = crc32_be(crc, pos - 2, elen + 2);
1323 elems->cisco_dtpc_elem = pos;
1325 case WLAN_EID_ADDBA_EXT:
1326 if (elen != sizeof(struct ieee80211_addba_ext_ie)) {
1327 elem_parse_failed = true;
1330 elems->addba_ext_ie = (void *)pos;
1332 case WLAN_EID_TIMEOUT_INTERVAL:
1333 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1334 elems->timeout_int = (void *)pos;
1336 elem_parse_failed = true;
1338 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1339 if (elen >= sizeof(*elems->max_idle_period_ie))
1340 elems->max_idle_period_ie = (void *)pos;
1344 elems->rsnx_len = elen;
1346 case WLAN_EID_EXTENSION:
1347 ieee80211_parse_extension_element(calc_crc ?
1351 case WLAN_EID_S1G_CAPABILITIES:
1352 if (elen == sizeof(*elems->s1g_capab))
1353 elems->s1g_capab = (void *)pos;
1355 elem_parse_failed = true;
1357 case WLAN_EID_S1G_OPERATION:
1358 if (elen == sizeof(*elems->s1g_oper))
1359 elems->s1g_oper = (void *)pos;
1361 elem_parse_failed = true;
1363 case WLAN_EID_S1G_BCN_COMPAT:
1364 if (elen == sizeof(*elems->s1g_bcn_compat))
1365 elems->s1g_bcn_compat = (void *)pos;
1367 elem_parse_failed = true;
1369 case WLAN_EID_AID_RESPONSE:
1370 if (elen == sizeof(struct ieee80211_aid_response_ie))
1371 elems->aid_resp = (void *)pos;
1373 elem_parse_failed = true;
1379 if (elem_parse_failed)
1380 elems->parse_error = true;
1382 __set_bit(id, seen_elems);
1385 if (!for_each_element_completed(elem, start, len))
1386 elems->parse_error = true;
1391 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1392 struct ieee802_11_elems *elems,
1393 u8 *transmitter_bssid,
1395 u8 *nontransmitted_profile)
1397 const struct element *elem, *sub;
1398 size_t profile_len = 0;
1401 if (!bss_bssid || !transmitter_bssid)
1404 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1405 if (elem->datalen < 2)
1408 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1409 u8 new_bssid[ETH_ALEN];
1412 if (sub->id != 0 || sub->datalen < 4) {
1413 /* not a valid BSS profile */
1417 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1418 sub->data[1] != 2) {
1419 /* The first element of the
1420 * Nontransmitted BSSID Profile is not
1421 * the Nontransmitted BSSID Capability
1427 memset(nontransmitted_profile, 0, len);
1428 profile_len = cfg80211_merge_profile(start, len,
1431 nontransmitted_profile,
1434 /* found a Nontransmitted BSSID Profile */
1435 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1436 nontransmitted_profile,
1438 if (!index || index[1] < 1 || index[2] == 0) {
1439 /* Invalid MBSSID Index element */
1443 cfg80211_gen_new_bssid(transmitter_bssid,
1447 if (ether_addr_equal(new_bssid, bss_bssid)) {
1449 elems->bssid_index_len = index[1];
1450 elems->bssid_index = (void *)&index[2];
1456 return found ? profile_len : 0;
1459 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1460 struct ieee802_11_elems *elems,
1461 u64 filter, u32 crc, u8 *transmitter_bssid,
1464 const struct element *non_inherit = NULL;
1465 u8 *nontransmitted_profile;
1466 int nontransmitted_profile_len = 0;
1468 memset(elems, 0, sizeof(*elems));
1469 elems->ie_start = start;
1470 elems->total_len = len;
1472 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1473 if (nontransmitted_profile) {
1474 nontransmitted_profile_len =
1475 ieee802_11_find_bssid_profile(start, len, elems,
1478 nontransmitted_profile);
1480 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1481 nontransmitted_profile,
1482 nontransmitted_profile_len);
1485 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1488 /* Override with nontransmitted profile, if found */
1489 if (nontransmitted_profile_len)
1490 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1491 nontransmitted_profile_len,
1492 action, elems, 0, 0, NULL);
1494 if (elems->tim && !elems->parse_error) {
1495 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1497 elems->dtim_period = tim_ie->dtim_period;
1498 elems->dtim_count = tim_ie->dtim_count;
1501 /* Override DTIM period and count if needed */
1502 if (elems->bssid_index &&
1503 elems->bssid_index_len >=
1504 offsetofend(struct ieee80211_bssid_index, dtim_period))
1505 elems->dtim_period = elems->bssid_index->dtim_period;
1507 if (elems->bssid_index &&
1508 elems->bssid_index_len >=
1509 offsetofend(struct ieee80211_bssid_index, dtim_count))
1510 elems->dtim_count = elems->bssid_index->dtim_count;
1512 kfree(nontransmitted_profile);
1517 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1518 struct ieee80211_tx_queue_params
1521 struct ieee80211_chanctx_conf *chanctx_conf;
1522 const struct ieee80211_reg_rule *rrule;
1523 const struct ieee80211_wmm_ac *wmm_ac;
1524 u16 center_freq = 0;
1526 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1527 sdata->vif.type != NL80211_IFTYPE_STATION)
1531 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1533 center_freq = chanctx_conf->def.chan->center_freq;
1540 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1542 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1547 if (sdata->vif.type == NL80211_IFTYPE_AP)
1548 wmm_ac = &rrule->wmm_rule.ap[ac];
1550 wmm_ac = &rrule->wmm_rule.client[ac];
1551 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1552 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1553 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1554 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1558 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1559 bool bss_notify, bool enable_qos)
1561 struct ieee80211_local *local = sdata->local;
1562 struct ieee80211_tx_queue_params qparam;
1563 struct ieee80211_chanctx_conf *chanctx_conf;
1566 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1569 if (!local->ops->conf_tx)
1572 if (local->hw.queues < IEEE80211_NUM_ACS)
1575 memset(&qparam, 0, sizeof(qparam));
1578 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1579 use_11b = (chanctx_conf &&
1580 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1581 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1584 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1586 /* Set defaults according to 802.11-2007 Table 7-37 */
1593 /* Confiure old 802.11b/g medium access rules. */
1594 qparam.cw_max = aCWmax;
1595 qparam.cw_min = aCWmin;
1599 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1600 /* Update if QoS is enabled. */
1603 case IEEE80211_AC_BK:
1604 qparam.cw_max = aCWmax;
1605 qparam.cw_min = aCWmin;
1612 /* never happens but let's not leave undefined */
1614 case IEEE80211_AC_BE:
1615 qparam.cw_max = aCWmax;
1616 qparam.cw_min = aCWmin;
1623 case IEEE80211_AC_VI:
1624 qparam.cw_max = aCWmin;
1625 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1629 qparam.txop = 6016/32;
1631 qparam.txop = 3008/32;
1638 case IEEE80211_AC_VO:
1639 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1640 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1644 qparam.txop = 3264/32;
1646 qparam.txop = 1504/32;
1651 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1653 qparam.uapsd = false;
1655 sdata->tx_conf[ac] = qparam;
1656 drv_conf_tx(local, sdata, ac, &qparam);
1659 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1660 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1661 sdata->vif.type != NL80211_IFTYPE_NAN) {
1662 sdata->vif.bss_conf.qos = enable_qos;
1664 ieee80211_bss_info_change_notify(sdata,
1669 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1670 u16 transaction, u16 auth_alg, u16 status,
1671 const u8 *extra, size_t extra_len, const u8 *da,
1672 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1675 struct ieee80211_local *local = sdata->local;
1676 struct sk_buff *skb;
1677 struct ieee80211_mgmt *mgmt;
1680 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1681 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1682 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1686 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1688 mgmt = skb_put_zero(skb, 24 + 6);
1689 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1690 IEEE80211_STYPE_AUTH);
1691 memcpy(mgmt->da, da, ETH_ALEN);
1692 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1693 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1694 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1695 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1696 mgmt->u.auth.status_code = cpu_to_le16(status);
1698 skb_put_data(skb, extra, extra_len);
1700 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1701 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1702 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1706 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1708 ieee80211_tx_skb(sdata, skb);
1711 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1712 const u8 *da, const u8 *bssid,
1713 u16 stype, u16 reason,
1714 bool send_frame, u8 *frame_buf)
1716 struct ieee80211_local *local = sdata->local;
1717 struct sk_buff *skb;
1718 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1721 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1722 mgmt->duration = 0; /* initialize only */
1723 mgmt->seq_ctrl = 0; /* initialize only */
1724 memcpy(mgmt->da, da, ETH_ALEN);
1725 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1726 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1727 /* u.deauth.reason_code == u.disassoc.reason_code */
1728 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1731 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1732 IEEE80211_DEAUTH_FRAME_LEN);
1736 skb_reserve(skb, local->hw.extra_tx_headroom);
1739 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1741 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1742 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1743 IEEE80211_SKB_CB(skb)->flags |=
1744 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1746 ieee80211_tx_skb(sdata, skb);
1750 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1752 if ((end - pos) < 5)
1755 *pos++ = WLAN_EID_EXTENSION;
1756 *pos++ = 1 + sizeof(cap);
1757 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1758 memcpy(pos, &cap, sizeof(cap));
1763 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1764 u8 *buffer, size_t buffer_len,
1765 const u8 *ie, size_t ie_len,
1766 enum nl80211_band band,
1768 struct cfg80211_chan_def *chandef,
1769 size_t *offset, u32 flags)
1771 struct ieee80211_local *local = sdata->local;
1772 struct ieee80211_supported_band *sband;
1773 const struct ieee80211_sta_he_cap *he_cap;
1774 u8 *pos = buffer, *end = buffer + buffer_len;
1776 int supp_rates_len, i;
1782 bool have_80mhz = false;
1786 sband = local->hw.wiphy->bands[band];
1787 if (WARN_ON_ONCE(!sband))
1790 rate_flags = ieee80211_chandef_rate_flags(chandef);
1791 shift = ieee80211_chandef_get_shift(chandef);
1794 for (i = 0; i < sband->n_bitrates; i++) {
1795 if ((BIT(i) & rate_mask) == 0)
1796 continue; /* skip rate */
1797 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1800 rates[num_rates++] =
1801 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1805 supp_rates_len = min_t(int, num_rates, 8);
1807 if (end - pos < 2 + supp_rates_len)
1809 *pos++ = WLAN_EID_SUPP_RATES;
1810 *pos++ = supp_rates_len;
1811 memcpy(pos, rates, supp_rates_len);
1812 pos += supp_rates_len;
1814 /* insert "request information" if in custom IEs */
1816 static const u8 before_extrates[] = {
1818 WLAN_EID_SUPP_RATES,
1821 noffset = ieee80211_ie_split(ie, ie_len,
1823 ARRAY_SIZE(before_extrates),
1825 if (end - pos < noffset - *offset)
1827 memcpy(pos, ie + *offset, noffset - *offset);
1828 pos += noffset - *offset;
1832 ext_rates_len = num_rates - supp_rates_len;
1833 if (ext_rates_len > 0) {
1834 if (end - pos < 2 + ext_rates_len)
1836 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1837 *pos++ = ext_rates_len;
1838 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1839 pos += ext_rates_len;
1842 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1845 *pos++ = WLAN_EID_DS_PARAMS;
1847 *pos++ = ieee80211_frequency_to_channel(
1848 chandef->chan->center_freq);
1851 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1854 /* insert custom IEs that go before HT */
1856 static const u8 before_ht[] = {
1858 * no need to list the ones split off already
1859 * (or generated here)
1862 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1864 noffset = ieee80211_ie_split(ie, ie_len,
1865 before_ht, ARRAY_SIZE(before_ht),
1867 if (end - pos < noffset - *offset)
1869 memcpy(pos, ie + *offset, noffset - *offset);
1870 pos += noffset - *offset;
1874 if (sband->ht_cap.ht_supported) {
1875 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1877 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1881 /* insert custom IEs that go before VHT */
1883 static const u8 before_vht[] = {
1885 * no need to list the ones split off already
1886 * (or generated here)
1888 WLAN_EID_BSS_COEX_2040,
1889 WLAN_EID_EXT_CAPABILITY,
1891 WLAN_EID_CHANNEL_USAGE,
1892 WLAN_EID_INTERWORKING,
1894 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1896 noffset = ieee80211_ie_split(ie, ie_len,
1897 before_vht, ARRAY_SIZE(before_vht),
1899 if (end - pos < noffset - *offset)
1901 memcpy(pos, ie + *offset, noffset - *offset);
1902 pos += noffset - *offset;
1906 /* Check if any channel in this sband supports at least 80 MHz */
1907 for (i = 0; i < sband->n_channels; i++) {
1908 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1909 IEEE80211_CHAN_NO_80MHZ))
1916 if (sband->vht_cap.vht_supported && have_80mhz) {
1917 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1919 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1920 sband->vht_cap.cap);
1923 /* insert custom IEs that go before HE */
1925 static const u8 before_he[] = {
1927 * no need to list the ones split off before VHT
1930 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1932 /* TODO: add 11ah/11aj/11ak elements */
1934 noffset = ieee80211_ie_split(ie, ie_len,
1935 before_he, ARRAY_SIZE(before_he),
1937 if (end - pos < noffset - *offset)
1939 memcpy(pos, ie + *offset, noffset - *offset);
1940 pos += noffset - *offset;
1944 he_cap = ieee80211_get_he_sta_cap(sband);
1946 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1950 if (sband->band == NL80211_BAND_6GHZ) {
1951 enum nl80211_iftype iftype =
1952 ieee80211_vif_type_p2p(&sdata->vif);
1953 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1955 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1960 * If adding more here, adjust code in main.c
1961 * that calculates local->scan_ies_len.
1964 return pos - buffer;
1966 WARN_ONCE(1, "not enough space for preq IEs\n");
1968 return pos - buffer;
1971 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1973 struct ieee80211_scan_ies *ie_desc,
1974 const u8 *ie, size_t ie_len,
1975 u8 bands_used, u32 *rate_masks,
1976 struct cfg80211_chan_def *chandef,
1979 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1982 memset(ie_desc, 0, sizeof(*ie_desc));
1984 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1985 if (bands_used & BIT(i)) {
1986 pos += ieee80211_build_preq_ies_band(sdata,
1994 ie_desc->ies[i] = buffer + old_pos;
1995 ie_desc->len[i] = pos - old_pos;
2000 /* add any remaining custom IEs */
2002 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2003 "not enough space for preq custom IEs\n"))
2005 memcpy(buffer + pos, ie + custom_ie_offset,
2006 ie_len - custom_ie_offset);
2007 ie_desc->common_ies = buffer + pos;
2008 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2009 pos += ie_len - custom_ie_offset;
2015 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2016 const u8 *src, const u8 *dst,
2018 struct ieee80211_channel *chan,
2019 const u8 *ssid, size_t ssid_len,
2020 const u8 *ie, size_t ie_len,
2023 struct ieee80211_local *local = sdata->local;
2024 struct cfg80211_chan_def chandef;
2025 struct sk_buff *skb;
2026 struct ieee80211_mgmt *mgmt;
2028 u32 rate_masks[NUM_NL80211_BANDS] = {};
2029 struct ieee80211_scan_ies dummy_ie_desc;
2032 * Do not send DS Channel parameter for directed probe requests
2033 * in order to maximize the chance that we get a response. Some
2034 * badly-behaved APs don't respond when this parameter is included.
2036 chandef.width = sdata->vif.bss_conf.chandef.width;
2037 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2038 chandef.chan = NULL;
2040 chandef.chan = chan;
2042 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2047 rate_masks[chan->band] = ratemask;
2048 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2049 skb_tailroom(skb), &dummy_ie_desc,
2050 ie, ie_len, BIT(chan->band),
2051 rate_masks, &chandef, flags);
2052 skb_put(skb, ies_len);
2055 mgmt = (struct ieee80211_mgmt *) skb->data;
2056 memcpy(mgmt->da, dst, ETH_ALEN);
2057 memcpy(mgmt->bssid, dst, ETH_ALEN);
2060 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2065 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2066 struct ieee802_11_elems *elems,
2067 enum nl80211_band band, u32 *basic_rates)
2069 struct ieee80211_supported_band *sband;
2071 u32 supp_rates, rate_flags;
2074 sband = sdata->local->hw.wiphy->bands[band];
2075 if (WARN_ON(!sband))
2078 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2079 shift = ieee80211_vif_get_shift(&sdata->vif);
2081 num_rates = sband->n_bitrates;
2083 for (i = 0; i < elems->supp_rates_len +
2084 elems->ext_supp_rates_len; i++) {
2088 if (i < elems->supp_rates_len)
2089 rate = elems->supp_rates[i];
2090 else if (elems->ext_supp_rates)
2091 rate = elems->ext_supp_rates
2092 [i - elems->supp_rates_len];
2093 own_rate = 5 * (rate & 0x7f);
2094 is_basic = !!(rate & 0x80);
2096 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2099 for (j = 0; j < num_rates; j++) {
2101 if ((rate_flags & sband->bitrates[j].flags)
2105 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2108 if (brate == own_rate) {
2109 supp_rates |= BIT(j);
2110 if (basic_rates && is_basic)
2111 *basic_rates |= BIT(j);
2118 void ieee80211_stop_device(struct ieee80211_local *local)
2120 ieee80211_led_radio(local, false);
2121 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2123 cancel_work_sync(&local->reconfig_filter);
2125 flush_workqueue(local->workqueue);
2129 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2132 /* It's possible that we don't handle the scan completion in
2133 * time during suspend, so if it's still marked as completed
2134 * here, queue the work and flush it to clean things up.
2135 * Instead of calling the worker function directly here, we
2136 * really queue it to avoid potential races with other flows
2137 * scheduling the same work.
2139 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2140 /* If coming from reconfiguration failure, abort the scan so
2141 * we don't attempt to continue a partial HW scan - which is
2142 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2143 * completed scan, and a 5 GHz portion is still pending.
2146 set_bit(SCAN_ABORTED, &local->scanning);
2147 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2148 flush_delayed_work(&local->scan_work);
2152 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2154 struct ieee80211_sub_if_data *sdata;
2155 struct ieee80211_chanctx *ctx;
2158 * We get here if during resume the device can't be restarted properly.
2159 * We might also get here if this happens during HW reset, which is a
2160 * slightly different situation and we need to drop all connections in
2163 * Ask cfg80211 to turn off all interfaces, this will result in more
2164 * warnings but at least we'll then get into a clean stopped state.
2167 local->resuming = false;
2168 local->suspended = false;
2169 local->in_reconfig = false;
2171 ieee80211_flush_completed_scan(local, true);
2173 /* scheduled scan clearly can't be running any more, but tell
2174 * cfg80211 and clear local state
2176 ieee80211_sched_scan_end(local);
2178 list_for_each_entry(sdata, &local->interfaces, list)
2179 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2181 /* Mark channel contexts as not being in the driver any more to avoid
2182 * removing them from the driver during the shutdown process...
2184 mutex_lock(&local->chanctx_mtx);
2185 list_for_each_entry(ctx, &local->chanctx_list, list)
2186 ctx->driver_present = false;
2187 mutex_unlock(&local->chanctx_mtx);
2189 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2192 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2193 struct ieee80211_sub_if_data *sdata)
2195 struct ieee80211_chanctx_conf *conf;
2196 struct ieee80211_chanctx *ctx;
2198 if (!local->use_chanctx)
2201 mutex_lock(&local->chanctx_mtx);
2202 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2203 lockdep_is_held(&local->chanctx_mtx));
2205 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2206 drv_assign_vif_chanctx(local, sdata, ctx);
2208 mutex_unlock(&local->chanctx_mtx);
2211 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2213 struct ieee80211_local *local = sdata->local;
2214 struct sta_info *sta;
2217 mutex_lock(&local->sta_mtx);
2218 list_for_each_entry(sta, &local->sta_list, list) {
2219 enum ieee80211_sta_state state;
2221 if (!sta->uploaded || sta->sdata != sdata)
2224 for (state = IEEE80211_STA_NOTEXIST;
2225 state < sta->sta_state; state++)
2226 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2229 mutex_unlock(&local->sta_mtx);
2232 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2234 struct cfg80211_nan_func *func, **funcs;
2237 res = drv_start_nan(sdata->local, sdata,
2238 &sdata->u.nan.conf);
2242 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2248 /* Add all the functions:
2249 * This is a little bit ugly. We need to call a potentially sleeping
2250 * callback for each NAN function, so we can't hold the spinlock.
2252 spin_lock_bh(&sdata->u.nan.func_lock);
2254 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2257 spin_unlock_bh(&sdata->u.nan.func_lock);
2259 for (i = 0; funcs[i]; i++) {
2260 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2262 ieee80211_nan_func_terminated(&sdata->vif,
2263 funcs[i]->instance_id,
2264 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2273 int ieee80211_reconfig(struct ieee80211_local *local)
2275 struct ieee80211_hw *hw = &local->hw;
2276 struct ieee80211_sub_if_data *sdata;
2277 struct ieee80211_chanctx *ctx;
2278 struct sta_info *sta;
2280 bool reconfig_due_to_wowlan = false;
2281 struct ieee80211_sub_if_data *sched_scan_sdata;
2282 struct cfg80211_sched_scan_request *sched_scan_req;
2283 bool sched_scan_stopped = false;
2284 bool suspended = local->suspended;
2286 /* nothing to do if HW shouldn't run */
2287 if (!local->open_count)
2292 local->resuming = true;
2294 if (local->wowlan) {
2296 * In the wowlan case, both mac80211 and the device
2297 * are functional when the resume op is called, so
2298 * clear local->suspended so the device could operate
2299 * normally (e.g. pass rx frames).
2301 local->suspended = false;
2302 res = drv_resume(local);
2303 local->wowlan = false;
2305 local->resuming = false;
2312 * res is 1, which means the driver requested
2313 * to go through a regular reset on wakeup.
2314 * restore local->suspended in this case.
2316 reconfig_due_to_wowlan = true;
2317 local->suspended = true;
2322 * In case of hw_restart during suspend (without wowlan),
2323 * cancel restart work, as we are reconfiguring the device
2325 * Note that restart_work is scheduled on a frozen workqueue,
2326 * so we can't deadlock in this case.
2328 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2329 cancel_work_sync(&local->restart_work);
2331 local->started = false;
2334 * Upon resume hardware can sometimes be goofy due to
2335 * various platform / driver / bus issues, so restarting
2336 * the device may at times not work immediately. Propagate
2339 res = drv_start(local);
2342 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2344 WARN(1, "Hardware became unavailable during restart.\n");
2345 ieee80211_handle_reconfig_failure(local);
2349 /* setup fragmentation threshold */
2350 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2352 /* setup RTS threshold */
2353 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2355 /* reset coverage class */
2356 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2358 ieee80211_led_radio(local, true);
2359 ieee80211_mod_tpt_led_trig(local,
2360 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2362 /* add interfaces */
2363 sdata = rtnl_dereference(local->monitor_sdata);
2365 /* in HW restart it exists already */
2366 WARN_ON(local->resuming);
2367 res = drv_add_interface(local, sdata);
2369 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2375 list_for_each_entry(sdata, &local->interfaces, list) {
2376 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2377 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2378 ieee80211_sdata_running(sdata)) {
2379 res = drv_add_interface(local, sdata);
2385 /* If adding any of the interfaces failed above, roll back and
2389 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2391 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2392 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2393 ieee80211_sdata_running(sdata))
2394 drv_remove_interface(local, sdata);
2395 ieee80211_handle_reconfig_failure(local);
2399 /* add channel contexts */
2400 if (local->use_chanctx) {
2401 mutex_lock(&local->chanctx_mtx);
2402 list_for_each_entry(ctx, &local->chanctx_list, list)
2403 if (ctx->replace_state !=
2404 IEEE80211_CHANCTX_REPLACES_OTHER)
2405 WARN_ON(drv_add_chanctx(local, ctx));
2406 mutex_unlock(&local->chanctx_mtx);
2408 sdata = rtnl_dereference(local->monitor_sdata);
2409 if (sdata && ieee80211_sdata_running(sdata))
2410 ieee80211_assign_chanctx(local, sdata);
2413 /* reconfigure hardware */
2414 ieee80211_hw_config(local, ~0);
2416 ieee80211_configure_filter(local);
2418 /* Finally also reconfigure all the BSS information */
2419 list_for_each_entry(sdata, &local->interfaces, list) {
2422 if (!ieee80211_sdata_running(sdata))
2425 ieee80211_assign_chanctx(local, sdata);
2427 switch (sdata->vif.type) {
2428 case NL80211_IFTYPE_AP_VLAN:
2429 case NL80211_IFTYPE_MONITOR:
2431 case NL80211_IFTYPE_ADHOC:
2432 if (sdata->vif.bss_conf.ibss_joined)
2433 WARN_ON(drv_join_ibss(local, sdata));
2436 ieee80211_reconfig_stations(sdata);
2438 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2439 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2440 drv_conf_tx(local, sdata, i,
2441 &sdata->tx_conf[i]);
2445 /* common change flags for all interface types */
2446 changed = BSS_CHANGED_ERP_CTS_PROT |
2447 BSS_CHANGED_ERP_PREAMBLE |
2448 BSS_CHANGED_ERP_SLOT |
2450 BSS_CHANGED_BASIC_RATES |
2451 BSS_CHANGED_BEACON_INT |
2456 BSS_CHANGED_TXPOWER |
2457 BSS_CHANGED_MCAST_RATE;
2459 if (sdata->vif.mu_mimo_owner)
2460 changed |= BSS_CHANGED_MU_GROUPS;
2462 switch (sdata->vif.type) {
2463 case NL80211_IFTYPE_STATION:
2464 changed |= BSS_CHANGED_ASSOC |
2465 BSS_CHANGED_ARP_FILTER |
2468 /* Re-send beacon info report to the driver */
2469 if (sdata->u.mgd.have_beacon)
2470 changed |= BSS_CHANGED_BEACON_INFO;
2472 if (sdata->vif.bss_conf.max_idle_period ||
2473 sdata->vif.bss_conf.protected_keep_alive)
2474 changed |= BSS_CHANGED_KEEP_ALIVE;
2477 ieee80211_bss_info_change_notify(sdata, changed);
2478 sdata_unlock(sdata);
2480 case NL80211_IFTYPE_OCB:
2481 changed |= BSS_CHANGED_OCB;
2482 ieee80211_bss_info_change_notify(sdata, changed);
2484 case NL80211_IFTYPE_ADHOC:
2485 changed |= BSS_CHANGED_IBSS;
2487 case NL80211_IFTYPE_AP:
2488 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2490 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2491 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2492 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2493 changed |= BSS_CHANGED_FTM_RESPONDER;
2495 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2496 changed |= BSS_CHANGED_AP_PROBE_RESP;
2498 if (rcu_access_pointer(sdata->u.ap.beacon))
2499 drv_start_ap(local, sdata);
2502 case NL80211_IFTYPE_MESH_POINT:
2503 if (sdata->vif.bss_conf.enable_beacon) {
2504 changed |= BSS_CHANGED_BEACON |
2505 BSS_CHANGED_BEACON_ENABLED;
2506 ieee80211_bss_info_change_notify(sdata, changed);
2509 case NL80211_IFTYPE_NAN:
2510 res = ieee80211_reconfig_nan(sdata);
2512 ieee80211_handle_reconfig_failure(local);
2516 case NL80211_IFTYPE_WDS:
2517 case NL80211_IFTYPE_AP_VLAN:
2518 case NL80211_IFTYPE_MONITOR:
2519 case NL80211_IFTYPE_P2P_DEVICE:
2522 case NL80211_IFTYPE_UNSPECIFIED:
2523 case NUM_NL80211_IFTYPES:
2524 case NL80211_IFTYPE_P2P_CLIENT:
2525 case NL80211_IFTYPE_P2P_GO:
2531 ieee80211_recalc_ps(local);
2534 * The sta might be in psm against the ap (e.g. because
2535 * this was the state before a hw restart), so we
2536 * explicitly send a null packet in order to make sure
2537 * it'll sync against the ap (and get out of psm).
2539 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2540 list_for_each_entry(sdata, &local->interfaces, list) {
2541 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2543 if (!sdata->u.mgd.associated)
2546 ieee80211_send_nullfunc(local, sdata, false);
2550 /* APs are now beaconing, add back stations */
2551 mutex_lock(&local->sta_mtx);
2552 list_for_each_entry(sta, &local->sta_list, list) {
2553 enum ieee80211_sta_state state;
2558 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2559 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2562 for (state = IEEE80211_STA_NOTEXIST;
2563 state < sta->sta_state; state++)
2564 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2567 mutex_unlock(&local->sta_mtx);
2570 list_for_each_entry(sdata, &local->interfaces, list)
2571 ieee80211_reenable_keys(sdata);
2573 /* Reconfigure sched scan if it was interrupted by FW restart */
2574 mutex_lock(&local->mtx);
2575 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2576 lockdep_is_held(&local->mtx));
2577 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2578 lockdep_is_held(&local->mtx));
2579 if (sched_scan_sdata && sched_scan_req)
2581 * Sched scan stopped, but we don't want to report it. Instead,
2582 * we're trying to reschedule. However, if more than one scan
2583 * plan was set, we cannot reschedule since we don't know which
2584 * scan plan was currently running (and some scan plans may have
2585 * already finished).
2587 if (sched_scan_req->n_scan_plans > 1 ||
2588 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2590 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2591 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2592 sched_scan_stopped = true;
2594 mutex_unlock(&local->mtx);
2596 if (sched_scan_stopped)
2597 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
2601 if (local->monitors == local->open_count && local->monitors > 0)
2602 ieee80211_add_virtual_monitor(local);
2605 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2606 * sessions can be established after a resume.
2608 * Also tear down aggregation sessions since reconfiguring
2609 * them in a hardware restart scenario is not easily done
2610 * right now, and the hardware will have lost information
2611 * about the sessions, but we and the AP still think they
2612 * are active. This is really a workaround though.
2614 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2615 mutex_lock(&local->sta_mtx);
2617 list_for_each_entry(sta, &local->sta_list, list) {
2618 if (!local->resuming)
2619 ieee80211_sta_tear_down_BA_sessions(
2620 sta, AGG_STOP_LOCAL_REQUEST);
2621 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2624 mutex_unlock(&local->sta_mtx);
2627 if (local->in_reconfig) {
2628 local->in_reconfig = false;
2631 /* Restart deferred ROCs */
2632 mutex_lock(&local->mtx);
2633 ieee80211_start_next_roc(local);
2634 mutex_unlock(&local->mtx);
2636 /* Requeue all works */
2637 list_for_each_entry(sdata, &local->interfaces, list)
2638 ieee80211_queue_work(&local->hw, &sdata->work);
2641 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2642 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2646 * If this is for hw restart things are still running.
2647 * We may want to change that later, however.
2649 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2650 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2656 /* first set suspended false, then resuming */
2657 local->suspended = false;
2659 local->resuming = false;
2661 ieee80211_flush_completed_scan(local, false);
2663 if (local->open_count && !reconfig_due_to_wowlan)
2664 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2666 list_for_each_entry(sdata, &local->interfaces, list) {
2667 if (!ieee80211_sdata_running(sdata))
2669 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2670 ieee80211_sta_restart(sdata);
2673 mod_timer(&local->sta_cleanup, jiffies + 1);
2681 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2683 struct ieee80211_sub_if_data *sdata;
2684 struct ieee80211_local *local;
2685 struct ieee80211_key *key;
2690 sdata = vif_to_sdata(vif);
2691 local = sdata->local;
2693 if (WARN_ON(!local->resuming))
2696 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2699 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2701 mutex_lock(&local->key_mtx);
2702 list_for_each_entry(key, &sdata->key_list, list)
2703 key->flags |= KEY_FLAG_TAINTED;
2704 mutex_unlock(&local->key_mtx);
2706 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2708 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2710 struct ieee80211_local *local = sdata->local;
2711 struct ieee80211_chanctx_conf *chanctx_conf;
2712 struct ieee80211_chanctx *chanctx;
2714 mutex_lock(&local->chanctx_mtx);
2716 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2717 lockdep_is_held(&local->chanctx_mtx));
2720 * This function can be called from a work, thus it may be possible
2721 * that the chanctx_conf is removed (due to a disconnection, for
2723 * So nothing should be done in such case.
2728 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2729 ieee80211_recalc_smps_chanctx(local, chanctx);
2731 mutex_unlock(&local->chanctx_mtx);
2734 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2736 struct ieee80211_local *local = sdata->local;
2737 struct ieee80211_chanctx_conf *chanctx_conf;
2738 struct ieee80211_chanctx *chanctx;
2740 mutex_lock(&local->chanctx_mtx);
2742 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2743 lockdep_is_held(&local->chanctx_mtx));
2745 if (WARN_ON_ONCE(!chanctx_conf))
2748 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2749 ieee80211_recalc_chanctx_min_def(local, chanctx);
2751 mutex_unlock(&local->chanctx_mtx);
2754 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2756 size_t pos = offset;
2758 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2759 pos += 2 + ies[pos + 1];
2764 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2768 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2770 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2774 * Scale up threshold values before storing it, as the RSSI averaging
2775 * algorithm uses a scaled up value as well. Change this scaling
2776 * factor if the RSSI averaging algorithm changes.
2778 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2779 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2782 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2786 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2788 WARN_ON(rssi_min_thold == rssi_max_thold ||
2789 rssi_min_thold > rssi_max_thold);
2791 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2794 EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2796 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2798 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2800 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2802 EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2804 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2809 *pos++ = WLAN_EID_HT_CAPABILITY;
2810 *pos++ = sizeof(struct ieee80211_ht_cap);
2811 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2813 /* capability flags */
2814 tmp = cpu_to_le16(cap);
2815 memcpy(pos, &tmp, sizeof(u16));
2818 /* AMPDU parameters */
2819 *pos++ = ht_cap->ampdu_factor |
2820 (ht_cap->ampdu_density <<
2821 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2824 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2825 pos += sizeof(ht_cap->mcs);
2827 /* extended capabilities */
2828 pos += sizeof(__le16);
2830 /* BF capabilities */
2831 pos += sizeof(__le32);
2833 /* antenna selection */
2839 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2844 *pos++ = WLAN_EID_VHT_CAPABILITY;
2845 *pos++ = sizeof(struct ieee80211_vht_cap);
2846 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2848 /* capability flags */
2849 tmp = cpu_to_le32(cap);
2850 memcpy(pos, &tmp, sizeof(u32));
2854 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2855 pos += sizeof(vht_cap->vht_mcs);
2860 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2862 const struct ieee80211_sta_he_cap *he_cap;
2863 struct ieee80211_supported_band *sband;
2866 sband = ieee80211_get_sband(sdata);
2870 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2874 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2876 sizeof(he_cap->he_cap_elem) + n +
2877 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2878 he_cap->he_cap_elem.phy_cap_info);
2881 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2882 const struct ieee80211_sta_he_cap *he_cap,
2889 /* Make sure we have place for the IE */
2891 * TODO: the 1 added is because this temporarily is under the EXTENSION
2892 * IE. Get rid of it when it moves.
2897 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2899 sizeof(he_cap->he_cap_elem) + n +
2900 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2901 he_cap->he_cap_elem.phy_cap_info);
2903 if ((end - pos) < ie_len)
2906 *pos++ = WLAN_EID_EXTENSION;
2907 pos++; /* We'll set the size later below */
2908 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2911 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2912 pos += sizeof(he_cap->he_cap_elem);
2914 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2917 /* Check if PPE Threshold should be present */
2918 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2919 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2923 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2924 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2926 n = hweight8(he_cap->ppe_thres[0] &
2927 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2928 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2929 IEEE80211_PPE_THRES_NSS_POS));
2932 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2935 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2936 n = DIV_ROUND_UP(n, 8);
2938 /* Copy PPE Thresholds */
2939 memcpy(pos, &he_cap->ppe_thres, n);
2943 orig_pos[1] = (pos - orig_pos) - 2;
2947 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2948 struct sk_buff *skb)
2950 struct ieee80211_supported_band *sband;
2951 const struct ieee80211_sband_iftype_data *iftd;
2952 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2956 sband = ieee80211_get_sband(sdata);
2960 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2964 /* Check for device HE 6 GHz capability before adding element */
2965 if (!iftd->he_6ghz_capa.capa)
2968 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2969 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2971 switch (sdata->smps_mode) {
2972 case IEEE80211_SMPS_AUTOMATIC:
2973 case IEEE80211_SMPS_NUM_MODES:
2976 case IEEE80211_SMPS_OFF:
2977 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2978 IEEE80211_HE_6GHZ_CAP_SM_PS);
2980 case IEEE80211_SMPS_STATIC:
2981 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2982 IEEE80211_HE_6GHZ_CAP_SM_PS);
2984 case IEEE80211_SMPS_DYNAMIC:
2985 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2986 IEEE80211_HE_6GHZ_CAP_SM_PS);
2990 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2991 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
2992 pos + 2 + 1 + sizeof(cap));
2995 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2996 const struct cfg80211_chan_def *chandef,
2997 u16 prot_mode, bool rifs_mode)
2999 struct ieee80211_ht_operation *ht_oper;
3000 /* Build HT Information */
3001 *pos++ = WLAN_EID_HT_OPERATION;
3002 *pos++ = sizeof(struct ieee80211_ht_operation);
3003 ht_oper = (struct ieee80211_ht_operation *)pos;
3004 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3005 chandef->chan->center_freq);
3006 switch (chandef->width) {
3007 case NL80211_CHAN_WIDTH_160:
3008 case NL80211_CHAN_WIDTH_80P80:
3009 case NL80211_CHAN_WIDTH_80:
3010 case NL80211_CHAN_WIDTH_40:
3011 if (chandef->center_freq1 > chandef->chan->center_freq)
3012 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3014 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3017 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3020 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3021 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3022 chandef->width != NL80211_CHAN_WIDTH_20)
3023 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3026 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3028 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3029 ht_oper->stbc_param = 0x0000;
3031 /* It seems that Basic MCS set and Supported MCS set
3032 are identical for the first 10 bytes */
3033 memset(&ht_oper->basic_set, 0, 16);
3034 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3036 return pos + sizeof(struct ieee80211_ht_operation);
3039 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3040 const struct cfg80211_chan_def *chandef)
3042 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3043 *pos++ = 3; /* IE length */
3044 /* New channel width */
3045 switch (chandef->width) {
3046 case NL80211_CHAN_WIDTH_80:
3047 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3049 case NL80211_CHAN_WIDTH_160:
3050 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3052 case NL80211_CHAN_WIDTH_80P80:
3053 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3056 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3059 /* new center frequency segment 0 */
3060 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3061 /* new center frequency segment 1 */
3062 if (chandef->center_freq2)
3063 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3068 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3069 const struct cfg80211_chan_def *chandef)
3071 struct ieee80211_vht_operation *vht_oper;
3073 *pos++ = WLAN_EID_VHT_OPERATION;
3074 *pos++ = sizeof(struct ieee80211_vht_operation);
3075 vht_oper = (struct ieee80211_vht_operation *)pos;
3076 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3077 chandef->center_freq1);
3078 if (chandef->center_freq2)
3079 vht_oper->center_freq_seg1_idx =
3080 ieee80211_frequency_to_channel(chandef->center_freq2);
3082 vht_oper->center_freq_seg1_idx = 0x00;
3084 switch (chandef->width) {
3085 case NL80211_CHAN_WIDTH_160:
3087 * Convert 160 MHz channel width to new style as interop
3090 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3091 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3092 if (chandef->chan->center_freq < chandef->center_freq1)
3093 vht_oper->center_freq_seg0_idx -= 8;
3095 vht_oper->center_freq_seg0_idx += 8;
3097 case NL80211_CHAN_WIDTH_80P80:
3099 * Convert 80+80 MHz channel width to new style as interop
3102 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3104 case NL80211_CHAN_WIDTH_80:
3105 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3108 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3112 /* don't require special VHT peer rates */
3113 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3115 return pos + sizeof(struct ieee80211_vht_operation);
3118 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3120 struct ieee80211_he_operation *he_oper;
3121 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3123 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3125 if (chandef->chan->band == NL80211_BAND_6GHZ)
3126 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3128 *pos++ = WLAN_EID_EXTENSION;
3130 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3133 he_oper_params |= u32_encode_bits(1023, /* disabled */
3134 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3135 he_oper_params |= u32_encode_bits(1,
3136 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3137 he_oper_params |= u32_encode_bits(1,
3138 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3139 if (chandef->chan->band == NL80211_BAND_6GHZ)
3140 he_oper_params |= u32_encode_bits(1,
3141 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3143 he_oper = (struct ieee80211_he_operation *)pos;
3144 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3146 /* don't require special HE peer rates */
3147 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3148 pos += sizeof(struct ieee80211_he_operation);
3150 if (chandef->chan->band != NL80211_BAND_6GHZ)
3153 /* TODO add VHT operational */
3154 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3155 he_6ghz_op->minrate = 6; /* 6 Mbps */
3156 he_6ghz_op->primary =
3157 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3159 ieee80211_frequency_to_channel(chandef->center_freq1);
3160 if (chandef->center_freq2)
3162 ieee80211_frequency_to_channel(chandef->center_freq2);
3164 he_6ghz_op->ccfs1 = 0;
3166 switch (chandef->width) {
3167 case NL80211_CHAN_WIDTH_160:
3168 /* Convert 160 MHz channel width to new style as interop
3171 he_6ghz_op->control =
3172 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3173 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3174 if (chandef->chan->center_freq < chandef->center_freq1)
3175 he_6ghz_op->ccfs0 -= 8;
3177 he_6ghz_op->ccfs0 += 8;
3179 case NL80211_CHAN_WIDTH_80P80:
3180 he_6ghz_op->control =
3181 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3183 case NL80211_CHAN_WIDTH_80:
3184 he_6ghz_op->control =
3185 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3187 case NL80211_CHAN_WIDTH_40:
3188 he_6ghz_op->control =
3189 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3192 he_6ghz_op->control =
3193 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3197 pos += sizeof(struct ieee80211_he_6ghz_oper);
3203 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3204 struct cfg80211_chan_def *chandef)
3206 enum nl80211_channel_type channel_type;
3211 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3212 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3213 channel_type = NL80211_CHAN_HT20;
3215 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3216 channel_type = NL80211_CHAN_HT40PLUS;
3218 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3219 channel_type = NL80211_CHAN_HT40MINUS;
3222 channel_type = NL80211_CHAN_NO_HT;
3226 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3230 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3231 const struct ieee80211_vht_operation *oper,
3232 const struct ieee80211_ht_operation *htop,
3233 struct cfg80211_chan_def *chandef)
3235 struct cfg80211_chan_def new = *chandef;
3237 int ccfs0, ccfs1, ccfs2;
3240 bool support_80_80 = false;
3241 bool support_160 = false;
3242 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3243 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3244 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3245 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3250 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3251 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3252 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3253 support_80_80 = ((vht_cap &
3254 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3255 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3256 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3257 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3258 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3259 ccfs0 = oper->center_freq_seg0_idx;
3260 ccfs1 = oper->center_freq_seg1_idx;
3261 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3262 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3263 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3267 /* if not supported, parse as though we didn't understand it */
3268 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3269 ext_nss_bw_supp = 0;
3272 * Cf. IEEE 802.11 Table 9-250
3274 * We really just consider that because it's inefficient to connect
3275 * at a higher bandwidth than we'll actually be able to use.
3277 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3281 support_160 = false;
3282 support_80_80 = false;
3285 support_80_80 = false;
3308 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3309 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3311 switch (oper->chan_width) {
3312 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3313 /* just use HT information directly */
3315 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3316 new.width = NL80211_CHAN_WIDTH_80;
3317 new.center_freq1 = cf0;
3318 /* If needed, adjust based on the newer interop workaround. */
3322 diff = abs(ccf1 - ccf0);
3323 if ((diff == 8) && support_160) {
3324 new.width = NL80211_CHAN_WIDTH_160;
3325 new.center_freq1 = cf1;
3326 } else if ((diff > 8) && support_80_80) {
3327 new.width = NL80211_CHAN_WIDTH_80P80;
3328 new.center_freq2 = cf1;
3332 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3333 /* deprecated encoding */
3334 new.width = NL80211_CHAN_WIDTH_160;
3335 new.center_freq1 = cf0;
3337 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3338 /* deprecated encoding */
3339 new.width = NL80211_CHAN_WIDTH_80P80;
3340 new.center_freq1 = cf0;
3341 new.center_freq2 = cf1;
3347 if (!cfg80211_chandef_valid(&new))
3354 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3355 const struct ieee80211_he_operation *he_oper,
3356 struct cfg80211_chan_def *chandef)
3358 struct ieee80211_local *local = sdata->local;
3359 struct ieee80211_supported_band *sband;
3360 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3361 const struct ieee80211_sta_he_cap *he_cap;
3362 struct cfg80211_chan_def he_chandef = *chandef;
3363 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3364 bool support_80_80, support_160;
3368 if (chandef->chan->band != NL80211_BAND_6GHZ)
3371 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3373 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3375 sdata_info(sdata, "Missing iftype sband data/HE cap");
3379 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3382 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3385 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3389 "HE is not advertised on (on %d MHz), expect issues\n",
3390 chandef->chan->center_freq);
3394 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3396 if (!he_6ghz_oper) {
3398 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3399 chandef->chan->center_freq);
3403 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3405 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3407 switch (u8_get_bits(he_6ghz_oper->control,
3408 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3409 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3410 he_chandef.width = NL80211_CHAN_WIDTH_20;
3412 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3413 he_chandef.width = NL80211_CHAN_WIDTH_40;
3415 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3416 he_chandef.width = NL80211_CHAN_WIDTH_80;
3418 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3419 he_chandef.width = NL80211_CHAN_WIDTH_80;
3420 if (!he_6ghz_oper->ccfs1)
3422 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3424 he_chandef.width = NL80211_CHAN_WIDTH_160;
3427 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3432 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3433 he_chandef.center_freq1 =
3434 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3437 he_chandef.center_freq1 =
3438 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3440 if (support_80_80 || support_160)
3441 he_chandef.center_freq2 =
3442 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3446 if (!cfg80211_chandef_valid(&he_chandef)) {
3448 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3449 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3451 he_chandef.center_freq1,
3452 he_chandef.center_freq2);
3456 *chandef = he_chandef;
3461 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3462 struct cfg80211_chan_def *chandef)
3469 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3470 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3471 chandef->width = NL80211_CHAN_WIDTH_1;
3473 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3474 chandef->width = NL80211_CHAN_WIDTH_2;
3476 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3477 chandef->width = NL80211_CHAN_WIDTH_4;
3479 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3480 chandef->width = NL80211_CHAN_WIDTH_8;
3482 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3483 chandef->width = NL80211_CHAN_WIDTH_16;
3489 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3490 NL80211_BAND_S1GHZ);
3491 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3492 chandef->freq1_offset = oper_freq % 1000;
3497 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3498 const struct ieee80211_supported_band *sband,
3499 const u8 *srates, int srates_len, u32 *rates)
3501 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3502 int shift = ieee80211_chandef_get_shift(chandef);
3503 struct ieee80211_rate *br;
3504 int brate, rate, i, j, count = 0;
3508 for (i = 0; i < srates_len; i++) {
3509 rate = srates[i] & 0x7f;
3511 for (j = 0; j < sband->n_bitrates; j++) {
3512 br = &sband->bitrates[j];
3513 if ((rate_flags & br->flags) != rate_flags)
3516 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3517 if (brate == rate) {
3527 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3528 struct sk_buff *skb, bool need_basic,
3529 enum nl80211_band band)
3531 struct ieee80211_local *local = sdata->local;
3532 struct ieee80211_supported_band *sband;
3535 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3538 shift = ieee80211_vif_get_shift(&sdata->vif);
3539 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3540 sband = local->hw.wiphy->bands[band];
3542 for (i = 0; i < sband->n_bitrates; i++) {
3543 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3550 if (skb_tailroom(skb) < rates + 2)
3553 pos = skb_put(skb, rates + 2);
3554 *pos++ = WLAN_EID_SUPP_RATES;
3556 for (i = 0; i < rates; i++) {
3558 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3561 if (need_basic && basic_rates & BIT(i))
3563 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3565 *pos++ = basic | (u8) rate;
3571 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3572 struct sk_buff *skb, bool need_basic,
3573 enum nl80211_band band)
3575 struct ieee80211_local *local = sdata->local;
3576 struct ieee80211_supported_band *sband;
3578 u8 i, exrates, *pos;
3579 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3582 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3583 shift = ieee80211_vif_get_shift(&sdata->vif);
3585 sband = local->hw.wiphy->bands[band];
3587 for (i = 0; i < sband->n_bitrates; i++) {
3588 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3598 if (skb_tailroom(skb) < exrates + 2)
3602 pos = skb_put(skb, exrates + 2);
3603 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3605 for (i = 8; i < sband->n_bitrates; i++) {
3607 if ((rate_flags & sband->bitrates[i].flags)
3610 if (need_basic && basic_rates & BIT(i))
3612 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3614 *pos++ = basic | (u8) rate;
3620 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3622 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3623 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3625 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3626 /* non-managed type inferfaces */
3629 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3631 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3633 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3638 /* TODO: consider rx_highest */
3640 if (mcs->rx_mask[3])
3642 if (mcs->rx_mask[2])
3644 if (mcs->rx_mask[1])
3650 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3651 * @local: mac80211 hw info struct
3652 * @status: RX status
3653 * @mpdu_len: total MPDU length (including FCS)
3654 * @mpdu_offset: offset into MPDU to calculate timestamp at
3656 * This function calculates the RX timestamp at the given MPDU offset, taking
3657 * into account what the RX timestamp was. An offset of 0 will just normalize
3658 * the timestamp to TSF at beginning of MPDU reception.
3660 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3661 struct ieee80211_rx_status *status,
3662 unsigned int mpdu_len,
3663 unsigned int mpdu_offset)
3665 u64 ts = status->mactime;
3666 struct rate_info ri;
3669 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3672 memset(&ri, 0, sizeof(ri));
3676 /* Fill cfg80211 rate info */
3677 switch (status->encoding) {
3679 ri.mcs = status->rate_idx;
3680 ri.flags |= RATE_INFO_FLAGS_MCS;
3681 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3682 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3685 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3686 ri.mcs = status->rate_idx;
3687 ri.nss = status->nss;
3688 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3689 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3694 case RX_ENC_LEGACY: {
3695 struct ieee80211_supported_band *sband;
3699 switch (status->bw) {
3700 case RATE_INFO_BW_10:
3703 case RATE_INFO_BW_5:
3708 sband = local->hw.wiphy->bands[status->band];
3709 bitrate = sband->bitrates[status->rate_idx].bitrate;
3710 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3712 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3713 /* TODO: handle HT/VHT preambles */
3714 if (status->band == NL80211_BAND_5GHZ) {
3717 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3727 rate = cfg80211_calculate_bitrate(&ri);
3728 if (WARN_ONCE(!rate,
3729 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3730 (unsigned long long)status->flag, status->rate_idx,
3734 /* rewind from end of MPDU */
3735 if (status->flag & RX_FLAG_MACTIME_END)
3736 ts -= mpdu_len * 8 * 10 / rate;
3738 ts += mpdu_offset * 8 * 10 / rate;
3743 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3745 struct ieee80211_sub_if_data *sdata;
3746 struct cfg80211_chan_def chandef;
3748 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3751 mutex_lock(&local->mtx);
3752 list_for_each_entry(sdata, &local->interfaces, list) {
3753 /* it might be waiting for the local->mtx, but then
3754 * by the time it gets it, sdata->wdev.cac_started
3755 * will no longer be true
3757 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3759 if (sdata->wdev.cac_started) {
3760 chandef = sdata->vif.bss_conf.chandef;
3761 ieee80211_vif_release_channel(sdata);
3762 cfg80211_cac_event(sdata->dev,
3764 NL80211_RADAR_CAC_ABORTED,
3768 mutex_unlock(&local->mtx);
3771 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3773 struct ieee80211_local *local =
3774 container_of(work, struct ieee80211_local, radar_detected_work);
3775 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3776 struct ieee80211_chanctx *ctx;
3777 int num_chanctx = 0;
3779 mutex_lock(&local->chanctx_mtx);
3780 list_for_each_entry(ctx, &local->chanctx_list, list) {
3781 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3785 chandef = ctx->conf.def;
3787 mutex_unlock(&local->chanctx_mtx);
3790 ieee80211_dfs_cac_cancel(local);
3793 if (num_chanctx > 1)
3794 /* XXX: multi-channel is not supported yet */
3797 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3800 void ieee80211_radar_detected(struct ieee80211_hw *hw)
3802 struct ieee80211_local *local = hw_to_local(hw);
3804 trace_api_radar_detected(local);
3806 schedule_work(&local->radar_detected_work);
3808 EXPORT_SYMBOL(ieee80211_radar_detected);
3810 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3816 case NL80211_CHAN_WIDTH_20:
3817 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3818 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3820 case NL80211_CHAN_WIDTH_40:
3821 c->width = NL80211_CHAN_WIDTH_20;
3822 c->center_freq1 = c->chan->center_freq;
3823 ret = IEEE80211_STA_DISABLE_40MHZ |
3824 IEEE80211_STA_DISABLE_VHT;
3826 case NL80211_CHAN_WIDTH_80:
3827 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3831 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3832 c->width = NL80211_CHAN_WIDTH_40;
3833 ret = IEEE80211_STA_DISABLE_VHT;
3835 case NL80211_CHAN_WIDTH_80P80:
3836 c->center_freq2 = 0;
3837 c->width = NL80211_CHAN_WIDTH_80;
3838 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3839 IEEE80211_STA_DISABLE_160MHZ;
3841 case NL80211_CHAN_WIDTH_160:
3843 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3846 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3847 c->width = NL80211_CHAN_WIDTH_80;
3848 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3849 IEEE80211_STA_DISABLE_160MHZ;
3852 case NL80211_CHAN_WIDTH_20_NOHT:
3854 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3855 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3857 case NL80211_CHAN_WIDTH_1:
3858 case NL80211_CHAN_WIDTH_2:
3859 case NL80211_CHAN_WIDTH_4:
3860 case NL80211_CHAN_WIDTH_8:
3861 case NL80211_CHAN_WIDTH_16:
3862 case NL80211_CHAN_WIDTH_5:
3863 case NL80211_CHAN_WIDTH_10:
3866 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3870 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3876 * Returns true if smps_mode_new is strictly more restrictive than
3879 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3880 enum ieee80211_smps_mode smps_mode_new)
3882 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3883 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3886 switch (smps_mode_old) {
3887 case IEEE80211_SMPS_STATIC:
3889 case IEEE80211_SMPS_DYNAMIC:
3890 return smps_mode_new == IEEE80211_SMPS_STATIC;
3891 case IEEE80211_SMPS_OFF:
3892 return smps_mode_new != IEEE80211_SMPS_OFF;
3900 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3901 struct cfg80211_csa_settings *csa_settings)
3903 struct sk_buff *skb;
3904 struct ieee80211_mgmt *mgmt;
3905 struct ieee80211_local *local = sdata->local;
3907 int hdr_len = offsetofend(struct ieee80211_mgmt,
3908 u.action.u.chan_switch);
3911 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3912 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3915 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3916 5 + /* channel switch announcement element */
3917 3 + /* secondary channel offset element */
3918 5 + /* wide bandwidth channel switch announcement */
3919 8); /* mesh channel switch parameters element */
3923 skb_reserve(skb, local->tx_headroom);
3924 mgmt = skb_put_zero(skb, hdr_len);
3925 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3926 IEEE80211_STYPE_ACTION);
3928 eth_broadcast_addr(mgmt->da);
3929 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3930 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3931 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3933 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3934 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3936 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3937 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3938 pos = skb_put(skb, 5);
3939 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3940 *pos++ = 3; /* IE length */
3941 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3942 freq = csa_settings->chandef.chan->center_freq;
3943 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3944 *pos++ = csa_settings->count; /* count */
3946 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3947 enum nl80211_channel_type ch_type;
3950 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3951 *pos++ = 1; /* IE length */
3952 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3953 if (ch_type == NL80211_CHAN_HT40PLUS)
3954 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3956 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3959 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3960 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3963 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3964 *pos++ = 6; /* IE length */
3965 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3966 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3967 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3968 *pos++ |= csa_settings->block_tx ?
3969 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3970 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3972 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
3976 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3977 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3978 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3980 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3983 ieee80211_tx_skb(sdata, skb);
3987 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3989 return !(cs == NULL || cs->cipher == 0 ||
3990 cs->hdr_len < cs->pn_len + cs->pn_off ||
3991 cs->hdr_len <= cs->key_idx_off ||
3992 cs->key_idx_shift > 7 ||
3993 cs->key_idx_mask == 0);
3996 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4000 /* Ensure we have enough iftype bitmap space for all iftype values */
4001 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4003 for (i = 0; i < n; i++)
4004 if (!ieee80211_cs_valid(&cs[i]))
4010 const struct ieee80211_cipher_scheme *
4011 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4012 enum nl80211_iftype iftype)
4014 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4015 int n = local->hw.n_cipher_schemes;
4017 const struct ieee80211_cipher_scheme *cs = NULL;
4019 for (i = 0; i < n; i++) {
4020 if (l[i].cipher == cipher) {
4026 if (!cs || !(cs->iftype & BIT(iftype)))
4032 int ieee80211_cs_headroom(struct ieee80211_local *local,
4033 struct cfg80211_crypto_settings *crypto,
4034 enum nl80211_iftype iftype)
4036 const struct ieee80211_cipher_scheme *cs;
4037 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4040 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4041 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4044 if (cs && headroom < cs->hdr_len)
4045 headroom = cs->hdr_len;
4048 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4049 if (cs && headroom < cs->hdr_len)
4050 headroom = cs->hdr_len;
4056 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4058 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4065 if (data->count[i] == 1)
4068 if (data->desc[i].interval == 0)
4071 /* End time is in the past, check for repetitions */
4072 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4073 if (data->count[i] < 255) {
4074 if (data->count[i] <= skip) {
4079 data->count[i] -= skip;
4082 data->desc[i].start += skip * data->desc[i].interval;
4088 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4094 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4097 if (!data->count[i])
4100 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4103 cur = data->desc[i].start - tsf;
4107 cur = data->desc[i].start + data->desc[i].duration - tsf;
4116 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4121 * arbitrary limit, used to avoid infinite loops when combined NoA
4122 * descriptors cover the full time period.
4126 ieee80211_extend_absent_time(data, tsf, &offset);
4128 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4132 } while (tries < max_tries);
4137 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4139 u32 next_offset = BIT(31) - 1;
4143 data->has_next_tsf = false;
4144 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4147 if (!data->count[i])
4150 ieee80211_extend_noa_desc(data, tsf, i);
4151 start = data->desc[i].start - tsf;
4153 data->absent |= BIT(i);
4155 if (next_offset > start)
4156 next_offset = start;
4158 data->has_next_tsf = true;
4162 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4164 data->next_tsf = tsf + next_offset;
4166 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4168 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4169 struct ieee80211_noa_data *data, u32 tsf)
4174 memset(data, 0, sizeof(*data));
4176 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4177 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4179 if (!desc->count || !desc->duration)
4182 data->count[i] = desc->count;
4183 data->desc[i].start = le32_to_cpu(desc->start_time);
4184 data->desc[i].duration = le32_to_cpu(desc->duration);
4185 data->desc[i].interval = le32_to_cpu(desc->interval);
4187 if (data->count[i] > 1 &&
4188 data->desc[i].interval < data->desc[i].duration)
4191 ieee80211_extend_noa_desc(data, tsf, i);
4196 ieee80211_update_p2p_noa(data, tsf);
4200 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4202 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4203 struct ieee80211_sub_if_data *sdata)
4205 u64 tsf = drv_get_tsf(local, sdata);
4207 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4208 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4212 if (tsf == -1ULL || !beacon_int || !dtim_period)
4215 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4216 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4220 ps = &sdata->bss->ps;
4221 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4222 ps = &sdata->u.mesh.ps;
4228 * actually finds last dtim_count, mac80211 will update in
4229 * __beacon_add_tim().
4230 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4232 do_div(tsf, beacon_int);
4233 bcns_from_dtim = do_div(tsf, dtim_period);
4234 /* just had a DTIM */
4235 if (!bcns_from_dtim)
4238 dtim_count = dtim_period - bcns_from_dtim;
4240 ps->dtim_count = dtim_count;
4243 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4244 struct ieee80211_chanctx *ctx)
4246 struct ieee80211_sub_if_data *sdata;
4247 u8 radar_detect = 0;
4249 lockdep_assert_held(&local->chanctx_mtx);
4251 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4254 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4255 if (sdata->reserved_radar_required)
4256 radar_detect |= BIT(sdata->reserved_chandef.width);
4259 * An in-place reservation context should not have any assigned vifs
4260 * until it replaces the other context.
4262 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4263 !list_empty(&ctx->assigned_vifs));
4265 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4266 if (sdata->radar_required)
4267 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4269 return radar_detect;
4272 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4273 const struct cfg80211_chan_def *chandef,
4274 enum ieee80211_chanctx_mode chanmode,
4277 struct ieee80211_local *local = sdata->local;
4278 struct ieee80211_sub_if_data *sdata_iter;
4279 enum nl80211_iftype iftype = sdata->wdev.iftype;
4280 struct ieee80211_chanctx *ctx;
4282 struct iface_combination_params params = {
4283 .radar_detect = radar_detect,
4286 lockdep_assert_held(&local->chanctx_mtx);
4288 if (WARN_ON(hweight32(radar_detect) > 1))
4291 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4295 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4298 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4299 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4301 * always passing this is harmless, since it'll be the
4302 * same value that cfg80211 finds if it finds the same
4303 * interface ... and that's always allowed
4305 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4308 /* Always allow software iftypes */
4309 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4316 params.num_different_channels = 1;
4318 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4319 params.iftype_num[iftype] = 1;
4321 list_for_each_entry(ctx, &local->chanctx_list, list) {
4322 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4324 params.radar_detect |=
4325 ieee80211_chanctx_radar_detect(local, ctx);
4326 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4327 params.num_different_channels++;
4330 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4331 cfg80211_chandef_compatible(chandef,
4334 params.num_different_channels++;
4337 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4338 struct wireless_dev *wdev_iter;
4340 wdev_iter = &sdata_iter->wdev;
4342 if (sdata_iter == sdata ||
4343 !ieee80211_sdata_running(sdata_iter) ||
4344 cfg80211_iftype_allowed(local->hw.wiphy,
4345 wdev_iter->iftype, 0, 1))
4348 params.iftype_num[wdev_iter->iftype]++;
4352 if (total == 1 && !params.radar_detect)
4355 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4359 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4362 u32 *max_num_different_channels = data;
4364 *max_num_different_channels = max(*max_num_different_channels,
4365 c->num_different_channels);
4368 int ieee80211_max_num_channels(struct ieee80211_local *local)
4370 struct ieee80211_sub_if_data *sdata;
4371 struct ieee80211_chanctx *ctx;
4372 u32 max_num_different_channels = 1;
4374 struct iface_combination_params params = {0};
4376 lockdep_assert_held(&local->chanctx_mtx);
4378 list_for_each_entry(ctx, &local->chanctx_list, list) {
4379 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4382 params.num_different_channels++;
4384 params.radar_detect |=
4385 ieee80211_chanctx_radar_detect(local, ctx);
4388 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4389 params.iftype_num[sdata->wdev.iftype]++;
4391 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4392 ieee80211_iter_max_chans,
4393 &max_num_different_channels);
4397 return max_num_different_channels;
4400 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4401 struct ieee80211_sta_s1g_cap *caps,
4402 struct sk_buff *skb)
4404 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4405 struct ieee80211_s1g_cap s1g_capab;
4409 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4415 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4416 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4418 /* override the capability info */
4419 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4420 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4422 s1g_capab.capab_info[i] &= ~mask;
4423 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4426 /* then MCS and NSS set */
4427 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4428 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4430 s1g_capab.supp_mcs_nss[i] &= ~mask;
4431 s1g_capab.supp_mcs_nss[i] |=
4432 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4435 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4436 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4437 *pos++ = sizeof(s1g_capab);
4439 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4442 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4443 struct sk_buff *skb)
4445 u8 *pos = skb_put(skb, 3);
4447 *pos++ = WLAN_EID_AID_REQUEST;
4452 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4454 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4455 *buf++ = 7; /* len */
4456 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4459 *buf++ = 2; /* WME */
4460 *buf++ = 0; /* WME info */
4461 *buf++ = 1; /* WME ver */
4462 *buf++ = qosinfo; /* U-APSD no in use */
4467 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4468 unsigned long *frame_cnt,
4469 unsigned long *byte_cnt)
4471 struct txq_info *txqi = to_txq_info(txq);
4472 u32 frag_cnt = 0, frag_bytes = 0;
4473 struct sk_buff *skb;
4475 skb_queue_walk(&txqi->frags, skb) {
4477 frag_bytes += skb->len;
4481 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4484 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4486 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4488 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4489 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4490 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4491 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4492 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4495 u16 ieee80211_encode_usf(int listen_interval)
4497 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4500 /* find greatest USF */
4501 while (usf < IEEE80211_MAX_USF) {
4502 if (listen_interval % listen_int_usf[usf + 1])
4506 ui = listen_interval / listen_int_usf[usf];
4508 /* error if there is a remainder. Should've been checked by user */
4509 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4510 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4511 FIELD_PREP(LISTEN_INT_UI, ui);
4513 return (u16) listen_interval;