1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2014 Intel Mobile Communications GmbH
8 * Copyright (C) 2015-2017 Intel Deutschland GmbH
9 * Copyright (C) 2018-2021 Intel Corporation
11 * utilities for mac80211
14 #include <net/mac80211.h>
15 #include <linux/netdevice.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/slab.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22 #include <linux/bitmap.h>
23 #include <linux/crc32.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/rtnetlink.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41 struct ieee80211_local *local;
43 local = wiphy_priv(wiphy);
46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
49 enum nl80211_iftype type)
51 __le16 fc = hdr->frame_control;
53 if (ieee80211_is_data(fc)) {
54 if (len < 24) /* drop incorrect hdr len (data) */
57 if (ieee80211_has_a4(fc))
59 if (ieee80211_has_tods(fc))
61 if (ieee80211_has_fromds(fc))
67 if (ieee80211_is_s1g_beacon(fc)) {
68 struct ieee80211_ext *ext = (void *) hdr;
70 return ext->u.s1g_beacon.sa;
73 if (ieee80211_is_mgmt(fc)) {
74 if (len < 24) /* drop incorrect hdr len (mgmt) */
79 if (ieee80211_is_ctl(fc)) {
80 if (ieee80211_is_pspoll(fc))
83 if (ieee80211_is_back_req(fc)) {
85 case NL80211_IFTYPE_STATION:
87 case NL80211_IFTYPE_AP:
88 case NL80211_IFTYPE_AP_VLAN:
91 break; /* fall through to the return */
98 EXPORT_SYMBOL(ieee80211_get_bssid);
100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
103 struct ieee80211_hdr *hdr;
105 skb_queue_walk(&tx->skbs, skb) {
106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
112 int rate, int erp, int short_preamble,
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
129 if (band == NL80211_BAND_5GHZ || erp) {
133 * N_DBPS = DATARATE x 4
134 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
135 * (16 = SIGNAL time, 6 = tail bits)
136 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
143 dur = 16; /* SIFS + signal ext */
144 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
145 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
147 /* IEEE 802.11-2012 18.3.2.4: all values above are:
148 * * times 4 for 5 MHz
149 * * times 2 for 10 MHz
153 /* rates should already consider the channel bandwidth,
154 * don't apply divisor again.
156 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
157 4 * rate); /* T_SYM x N_SYM */
160 * 802.11b or 802.11g with 802.11b compatibility:
161 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
162 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
164 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
165 * aSIFSTime = 10 usec
166 * aPreambleLength = 144 usec or 72 usec with short preamble
167 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
169 dur = 10; /* aSIFSTime = 10 usec */
170 dur += short_preamble ? (72 + 24) : (144 + 48);
172 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
178 /* Exported duration function for driver use */
179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
181 enum nl80211_band band,
183 struct ieee80211_rate *rate)
185 struct ieee80211_sub_if_data *sdata;
188 bool short_preamble = false;
192 sdata = vif_to_sdata(vif);
193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
194 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
196 shift = ieee80211_vif_get_shift(vif);
199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
200 short_preamble, shift);
202 return cpu_to_le16(dur);
204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
208 const struct ieee80211_tx_info *frame_txctl)
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
212 struct ieee80211_sub_if_data *sdata;
214 int erp, shift = 0, bitrate;
216 struct ieee80211_supported_band *sband;
218 sband = local->hw.wiphy->bands[frame_txctl->band];
220 short_preamble = false;
222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
226 sdata = vif_to_sdata(vif);
227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
228 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
230 shift = ieee80211_vif_get_shift(vif);
233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble, shift);
238 /* Data frame duration */
239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
240 erp, short_preamble, shift);
242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
243 erp, short_preamble, shift);
245 return cpu_to_le16(dur);
247 EXPORT_SYMBOL(ieee80211_rts_duration);
249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
252 const struct ieee80211_tx_info *frame_txctl)
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
256 struct ieee80211_sub_if_data *sdata;
258 int erp, shift = 0, bitrate;
260 struct ieee80211_supported_band *sband;
262 sband = local->hw.wiphy->bands[frame_txctl->band];
264 short_preamble = false;
266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
269 sdata = vif_to_sdata(vif);
270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
271 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
273 shift = ieee80211_vif_get_shift(vif);
276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
278 /* Data frame duration */
279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
280 erp, short_preamble, shift);
281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
284 erp, short_preamble, shift);
287 return cpu_to_le16(dur);
289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
293 struct ieee80211_local *local = sdata->local;
294 struct ieee80211_vif *vif = &sdata->vif;
295 struct fq *fq = &local->fq;
296 struct ps_data *ps = NULL;
297 struct txq_info *txqi;
298 struct sta_info *sta;
302 spin_lock(&fq->lock);
304 if (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(struct tasklet_struct *t)
391 struct ieee80211_local *local = from_tasklet(local, t,
395 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
396 _ieee80211_wake_txqs(local, &flags);
397 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
400 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
402 struct ieee80211_sub_if_data *sdata;
403 int n_acs = IEEE80211_NUM_ACS;
405 if (local->ops->wake_tx_queue)
408 if (local->hw.queues < IEEE80211_NUM_ACS)
411 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
417 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
418 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
421 for (ac = 0; ac < n_acs; ac++) {
422 int ac_queue = sdata->vif.hw_queue[ac];
424 if (ac_queue == queue ||
425 (sdata->vif.cab_queue == queue &&
426 local->queue_stop_reasons[ac_queue] == 0 &&
427 skb_queue_empty(&local->pending[ac_queue])))
428 netif_wake_subqueue(sdata->dev, ac);
433 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
434 enum queue_stop_reason reason,
436 unsigned long *flags)
438 struct ieee80211_local *local = hw_to_local(hw);
440 trace_wake_queue(local, queue, reason);
442 if (WARN_ON(queue >= hw->queues))
445 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
449 local->q_stop_reasons[queue][reason] = 0;
451 local->q_stop_reasons[queue][reason]--;
452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
453 local->q_stop_reasons[queue][reason] = 0;
456 if (local->q_stop_reasons[queue][reason] == 0)
457 __clear_bit(reason, &local->queue_stop_reasons[queue]);
459 if (local->queue_stop_reasons[queue] != 0)
460 /* someone still has this queue stopped */
463 if (skb_queue_empty(&local->pending[queue])) {
465 ieee80211_propagate_queue_wake(local, queue);
468 tasklet_schedule(&local->tx_pending_tasklet);
471 * Calling _ieee80211_wake_txqs here can be a problem because it may
472 * release queue_stop_reason_lock which has been taken by
473 * __ieee80211_wake_queue's caller. It is certainly not very nice to
474 * release someone's lock, but it is fine because all the callers of
475 * __ieee80211_wake_queue call it right before releasing the lock.
477 if (local->ops->wake_tx_queue) {
478 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
479 tasklet_schedule(&local->wake_txqs_tasklet);
481 _ieee80211_wake_txqs(local, flags);
485 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
486 enum queue_stop_reason reason,
489 struct ieee80211_local *local = hw_to_local(hw);
492 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
493 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
494 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
497 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
499 ieee80211_wake_queue_by_reason(hw, queue,
500 IEEE80211_QUEUE_STOP_REASON_DRIVER,
503 EXPORT_SYMBOL(ieee80211_wake_queue);
505 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
506 enum queue_stop_reason reason,
509 struct ieee80211_local *local = hw_to_local(hw);
510 struct ieee80211_sub_if_data *sdata;
511 int n_acs = IEEE80211_NUM_ACS;
513 trace_stop_queue(local, queue, reason);
515 if (WARN_ON(queue >= hw->queues))
519 local->q_stop_reasons[queue][reason] = 1;
521 local->q_stop_reasons[queue][reason]++;
523 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
526 if (local->hw.queues < IEEE80211_NUM_ACS)
530 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
536 for (ac = 0; ac < n_acs; ac++) {
537 if (sdata->vif.hw_queue[ac] == queue ||
538 sdata->vif.cab_queue == queue) {
539 if (!local->ops->wake_tx_queue) {
540 netif_stop_subqueue(sdata->dev, ac);
543 spin_lock(&local->fq.lock);
544 sdata->vif.txqs_stopped[ac] = true;
545 spin_unlock(&local->fq.lock);
552 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
553 enum queue_stop_reason reason,
556 struct ieee80211_local *local = hw_to_local(hw);
559 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
560 __ieee80211_stop_queue(hw, queue, reason, refcounted);
561 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
564 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
566 ieee80211_stop_queue_by_reason(hw, queue,
567 IEEE80211_QUEUE_STOP_REASON_DRIVER,
570 EXPORT_SYMBOL(ieee80211_stop_queue);
572 void ieee80211_add_pending_skb(struct ieee80211_local *local,
575 struct ieee80211_hw *hw = &local->hw;
577 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
578 int queue = info->hw_queue;
580 if (WARN_ON(!info->control.vif)) {
581 ieee80211_free_txskb(&local->hw, skb);
585 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
586 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
588 __skb_queue_tail(&local->pending[queue], skb);
589 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
594 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
595 struct sk_buff_head *skbs)
597 struct ieee80211_hw *hw = &local->hw;
602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
603 while ((skb = skb_dequeue(skbs))) {
604 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
606 if (WARN_ON(!info->control.vif)) {
607 ieee80211_free_txskb(&local->hw, skb);
611 queue = info->hw_queue;
613 __ieee80211_stop_queue(hw, queue,
614 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
617 __skb_queue_tail(&local->pending[queue], skb);
620 for (i = 0; i < hw->queues; i++)
621 __ieee80211_wake_queue(hw, i,
622 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
624 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
627 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
628 unsigned long queues,
629 enum queue_stop_reason reason,
632 struct ieee80211_local *local = hw_to_local(hw);
636 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
638 for_each_set_bit(i, &queues, hw->queues)
639 __ieee80211_stop_queue(hw, i, reason, refcounted);
641 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
644 void ieee80211_stop_queues(struct ieee80211_hw *hw)
646 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
647 IEEE80211_QUEUE_STOP_REASON_DRIVER,
650 EXPORT_SYMBOL(ieee80211_stop_queues);
652 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
654 struct ieee80211_local *local = hw_to_local(hw);
658 if (WARN_ON(queue >= hw->queues))
661 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
662 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
663 &local->queue_stop_reasons[queue]);
664 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
667 EXPORT_SYMBOL(ieee80211_queue_stopped);
669 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
670 unsigned long queues,
671 enum queue_stop_reason reason,
674 struct ieee80211_local *local = hw_to_local(hw);
678 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
680 for_each_set_bit(i, &queues, hw->queues)
681 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
683 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
686 void ieee80211_wake_queues(struct ieee80211_hw *hw)
688 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
689 IEEE80211_QUEUE_STOP_REASON_DRIVER,
692 EXPORT_SYMBOL(ieee80211_wake_queues);
695 ieee80211_get_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata)
700 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
705 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
706 queues |= BIT(sdata->vif.hw_queue[ac]);
707 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
708 queues |= BIT(sdata->vif.cab_queue);
711 queues = BIT(local->hw.queues) - 1;
717 void __ieee80211_flush_queues(struct ieee80211_local *local,
718 struct ieee80211_sub_if_data *sdata,
719 unsigned int queues, bool drop)
721 if (!local->ops->flush)
725 * If no queue was set, or if the HW doesn't support
726 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
728 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
729 queues = ieee80211_get_vif_queues(local, sdata);
731 ieee80211_stop_queues_by_reason(&local->hw, queues,
732 IEEE80211_QUEUE_STOP_REASON_FLUSH,
735 drv_flush(local, sdata, queues, drop);
737 ieee80211_wake_queues_by_reason(&local->hw, queues,
738 IEEE80211_QUEUE_STOP_REASON_FLUSH,
742 void ieee80211_flush_queues(struct ieee80211_local *local,
743 struct ieee80211_sub_if_data *sdata, bool drop)
745 __ieee80211_flush_queues(local, sdata, 0, drop);
748 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
749 struct ieee80211_sub_if_data *sdata,
750 enum queue_stop_reason reason)
752 ieee80211_stop_queues_by_reason(&local->hw,
753 ieee80211_get_vif_queues(local, sdata),
757 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
758 struct ieee80211_sub_if_data *sdata,
759 enum queue_stop_reason reason)
761 ieee80211_wake_queues_by_reason(&local->hw,
762 ieee80211_get_vif_queues(local, sdata),
766 static void __iterate_interfaces(struct ieee80211_local *local,
768 void (*iterator)(void *data, u8 *mac,
769 struct ieee80211_vif *vif),
772 struct ieee80211_sub_if_data *sdata;
773 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
775 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
776 switch (sdata->vif.type) {
777 case NL80211_IFTYPE_MONITOR:
778 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
781 case NL80211_IFTYPE_AP_VLAN:
786 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
787 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
789 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
790 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
792 if (ieee80211_sdata_running(sdata) || !active_only)
793 iterator(data, sdata->vif.addr,
797 sdata = rcu_dereference_check(local->monitor_sdata,
798 lockdep_is_held(&local->iflist_mtx) ||
799 lockdep_is_held(&local->hw.wiphy->mtx));
801 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
802 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
803 iterator(data, sdata->vif.addr, &sdata->vif);
806 void ieee80211_iterate_interfaces(
807 struct ieee80211_hw *hw, u32 iter_flags,
808 void (*iterator)(void *data, u8 *mac,
809 struct ieee80211_vif *vif),
812 struct ieee80211_local *local = hw_to_local(hw);
814 mutex_lock(&local->iflist_mtx);
815 __iterate_interfaces(local, iter_flags, iterator, data);
816 mutex_unlock(&local->iflist_mtx);
818 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
820 void ieee80211_iterate_active_interfaces_atomic(
821 struct ieee80211_hw *hw, u32 iter_flags,
822 void (*iterator)(void *data, u8 *mac,
823 struct ieee80211_vif *vif),
826 struct ieee80211_local *local = hw_to_local(hw);
829 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
833 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
835 void ieee80211_iterate_active_interfaces_mtx(
836 struct ieee80211_hw *hw, u32 iter_flags,
837 void (*iterator)(void *data, u8 *mac,
838 struct ieee80211_vif *vif),
841 struct ieee80211_local *local = hw_to_local(hw);
843 lockdep_assert_wiphy(hw->wiphy);
845 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
848 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
850 static void __iterate_stations(struct ieee80211_local *local,
851 void (*iterator)(void *data,
852 struct ieee80211_sta *sta),
855 struct sta_info *sta;
857 list_for_each_entry_rcu(sta, &local->sta_list, list) {
861 iterator(data, &sta->sta);
865 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
866 void (*iterator)(void *data,
867 struct ieee80211_sta *sta),
870 struct ieee80211_local *local = hw_to_local(hw);
872 mutex_lock(&local->sta_mtx);
873 __iterate_stations(local, iterator, data);
874 mutex_unlock(&local->sta_mtx);
876 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
878 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
879 void (*iterator)(void *data,
880 struct ieee80211_sta *sta),
883 struct ieee80211_local *local = hw_to_local(hw);
886 __iterate_stations(local, iterator, data);
889 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
891 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
893 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
895 if (!ieee80211_sdata_running(sdata) ||
896 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
900 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
902 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
907 return &vif_to_sdata(vif)->wdev;
909 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
912 * Nothing should have been stuffed into the workqueue during
913 * the suspend->resume cycle. Since we can't check each caller
914 * of this function if we are already quiescing / suspended,
915 * check here and don't WARN since this can actually happen when
916 * the rx path (for example) is racing against __ieee80211_suspend
917 * and suspending / quiescing was set after the rx path checked
920 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
922 if (local->quiescing || (local->suspended && !local->resuming)) {
923 pr_warn("queueing ieee80211 work while going to suspend\n");
930 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
932 struct ieee80211_local *local = hw_to_local(hw);
934 if (!ieee80211_can_queue_work(local))
937 queue_work(local->workqueue, work);
939 EXPORT_SYMBOL(ieee80211_queue_work);
941 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
942 struct delayed_work *dwork,
945 struct ieee80211_local *local = hw_to_local(hw);
947 if (!ieee80211_can_queue_work(local))
950 queue_delayed_work(local->workqueue, dwork, delay);
952 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
954 static void ieee80211_parse_extension_element(u32 *crc,
955 const struct element *elem,
956 struct ieee802_11_elems *elems)
958 const void *data = elem->data + 1;
964 len = elem->datalen - 1;
966 switch (elem->data[0]) {
967 case WLAN_EID_EXT_HE_MU_EDCA:
968 if (len >= sizeof(*elems->mu_edca_param_set)) {
969 elems->mu_edca_param_set = data;
971 *crc = crc32_be(*crc, (void *)elem,
975 case WLAN_EID_EXT_HE_CAPABILITY:
976 if (ieee80211_he_capa_size_ok(data, len)) {
977 elems->he_cap = data;
978 elems->he_cap_len = len;
981 case WLAN_EID_EXT_HE_OPERATION:
982 if (len >= sizeof(*elems->he_operation) &&
983 len >= ieee80211_he_oper_size(data) - 1) {
985 *crc = crc32_be(*crc, (void *)elem,
987 elems->he_operation = data;
990 case WLAN_EID_EXT_UORA:
992 elems->uora_element = data;
994 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
996 elems->max_channel_switch_time = data;
998 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
999 if (len >= sizeof(*elems->mbssid_config_ie))
1000 elems->mbssid_config_ie = data;
1002 case WLAN_EID_EXT_HE_SPR:
1003 if (len >= sizeof(*elems->he_spr) &&
1004 len >= ieee80211_he_spr_size(data))
1005 elems->he_spr = data;
1007 case WLAN_EID_EXT_HE_6GHZ_CAPA:
1008 if (len >= sizeof(*elems->he_6ghz_capa))
1009 elems->he_6ghz_capa = data;
1011 case WLAN_EID_EXT_EHT_CAPABILITY:
1012 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1014 elems->eht_cap = data;
1015 elems->eht_cap_len = len;
1018 case WLAN_EID_EXT_EHT_OPERATION:
1019 if (ieee80211_eht_oper_size_ok(data, len))
1020 elems->eht_operation = data;
1026 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1027 struct ieee802_11_elems *elems,
1028 u64 filter, u32 crc,
1029 const struct element *check_inherit)
1031 const struct element *elem;
1032 bool calc_crc = filter != 0;
1033 DECLARE_BITMAP(seen_elems, 256);
1036 bitmap_zero(seen_elems, 256);
1038 for_each_element(elem, start, len) {
1039 bool elem_parse_failed;
1041 u8 elen = elem->datalen;
1042 const u8 *pos = elem->data;
1044 if (check_inherit &&
1045 !cfg80211_is_element_inherited(elem,
1051 case WLAN_EID_SUPP_RATES:
1052 case WLAN_EID_FH_PARAMS:
1053 case WLAN_EID_DS_PARAMS:
1054 case WLAN_EID_CF_PARAMS:
1056 case WLAN_EID_IBSS_PARAMS:
1057 case WLAN_EID_CHALLENGE:
1059 case WLAN_EID_ERP_INFO:
1060 case WLAN_EID_EXT_SUPP_RATES:
1061 case WLAN_EID_HT_CAPABILITY:
1062 case WLAN_EID_HT_OPERATION:
1063 case WLAN_EID_VHT_CAPABILITY:
1064 case WLAN_EID_VHT_OPERATION:
1065 case WLAN_EID_MESH_ID:
1066 case WLAN_EID_MESH_CONFIG:
1067 case WLAN_EID_PEER_MGMT:
1072 case WLAN_EID_CHANNEL_SWITCH:
1073 case WLAN_EID_EXT_CHANSWITCH_ANN:
1074 case WLAN_EID_COUNTRY:
1075 case WLAN_EID_PWR_CONSTRAINT:
1076 case WLAN_EID_TIMEOUT_INTERVAL:
1077 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1078 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1079 case WLAN_EID_CHAN_SWITCH_PARAM:
1080 case WLAN_EID_EXT_CAPABILITY:
1081 case WLAN_EID_CHAN_SWITCH_TIMING:
1082 case WLAN_EID_LINK_ID:
1083 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1085 case WLAN_EID_S1G_BCN_COMPAT:
1086 case WLAN_EID_S1G_CAPABILITIES:
1087 case WLAN_EID_S1G_OPERATION:
1088 case WLAN_EID_AID_RESPONSE:
1089 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1091 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1092 * that if the content gets bigger it might be needed more than once
1094 if (test_bit(id, seen_elems)) {
1095 elems->parse_error = true;
1101 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1102 crc = crc32_be(crc, pos - 2, elen + 2);
1104 elem_parse_failed = false;
1107 case WLAN_EID_LINK_ID:
1108 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1109 elem_parse_failed = true;
1112 elems->lnk_id = (void *)(pos - 2);
1114 case WLAN_EID_CHAN_SWITCH_TIMING:
1115 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1116 elem_parse_failed = true;
1119 elems->ch_sw_timing = (void *)pos;
1121 case WLAN_EID_EXT_CAPABILITY:
1122 elems->ext_capab = pos;
1123 elems->ext_capab_len = elen;
1127 elems->ssid_len = elen;
1129 case WLAN_EID_SUPP_RATES:
1130 elems->supp_rates = pos;
1131 elems->supp_rates_len = elen;
1133 case WLAN_EID_DS_PARAMS:
1135 elems->ds_params = pos;
1137 elem_parse_failed = true;
1140 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1141 elems->tim = (void *)pos;
1142 elems->tim_len = elen;
1144 elem_parse_failed = true;
1146 case WLAN_EID_VENDOR_SPECIFIC:
1147 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1149 /* Microsoft OUI (00:50:F2) */
1152 crc = crc32_be(crc, pos - 2, elen + 2);
1154 if (elen >= 5 && pos[3] == 2) {
1155 /* OUI Type 2 - WMM IE */
1157 elems->wmm_info = pos;
1158 elems->wmm_info_len = elen;
1159 } else if (pos[4] == 1) {
1160 elems->wmm_param = pos;
1161 elems->wmm_param_len = elen;
1168 elems->rsn_len = elen;
1170 case WLAN_EID_ERP_INFO:
1172 elems->erp_info = pos;
1174 elem_parse_failed = true;
1176 case WLAN_EID_EXT_SUPP_RATES:
1177 elems->ext_supp_rates = pos;
1178 elems->ext_supp_rates_len = elen;
1180 case WLAN_EID_HT_CAPABILITY:
1181 if (elen >= sizeof(struct ieee80211_ht_cap))
1182 elems->ht_cap_elem = (void *)pos;
1184 elem_parse_failed = true;
1186 case WLAN_EID_HT_OPERATION:
1187 if (elen >= sizeof(struct ieee80211_ht_operation))
1188 elems->ht_operation = (void *)pos;
1190 elem_parse_failed = true;
1192 case WLAN_EID_VHT_CAPABILITY:
1193 if (elen >= sizeof(struct ieee80211_vht_cap))
1194 elems->vht_cap_elem = (void *)pos;
1196 elem_parse_failed = true;
1198 case WLAN_EID_VHT_OPERATION:
1199 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1200 elems->vht_operation = (void *)pos;
1202 crc = crc32_be(crc, pos - 2, elen + 2);
1205 elem_parse_failed = true;
1207 case WLAN_EID_OPMODE_NOTIF:
1209 elems->opmode_notif = pos;
1211 crc = crc32_be(crc, pos - 2, elen + 2);
1214 elem_parse_failed = true;
1216 case WLAN_EID_MESH_ID:
1217 elems->mesh_id = pos;
1218 elems->mesh_id_len = elen;
1220 case WLAN_EID_MESH_CONFIG:
1221 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1222 elems->mesh_config = (void *)pos;
1224 elem_parse_failed = true;
1226 case WLAN_EID_PEER_MGMT:
1227 elems->peering = pos;
1228 elems->peering_len = elen;
1230 case WLAN_EID_MESH_AWAKE_WINDOW:
1232 elems->awake_window = (void *)pos;
1236 elems->preq_len = elen;
1240 elems->prep_len = elen;
1244 elems->perr_len = elen;
1247 if (elen >= sizeof(struct ieee80211_rann_ie))
1248 elems->rann = (void *)pos;
1250 elem_parse_failed = true;
1252 case WLAN_EID_CHANNEL_SWITCH:
1253 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1254 elem_parse_failed = true;
1257 elems->ch_switch_ie = (void *)pos;
1259 case WLAN_EID_EXT_CHANSWITCH_ANN:
1260 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1261 elem_parse_failed = true;
1264 elems->ext_chansw_ie = (void *)pos;
1266 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1267 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1268 elem_parse_failed = true;
1271 elems->sec_chan_offs = (void *)pos;
1273 case WLAN_EID_CHAN_SWITCH_PARAM:
1275 sizeof(*elems->mesh_chansw_params_ie)) {
1276 elem_parse_failed = true;
1279 elems->mesh_chansw_params_ie = (void *)pos;
1281 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1283 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1284 elem_parse_failed = true;
1287 elems->wide_bw_chansw_ie = (void *)pos;
1289 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1291 elem_parse_failed = true;
1295 * This is a bit tricky, but as we only care about
1296 * the wide bandwidth channel switch element, so
1297 * just parse it out manually.
1299 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1302 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1303 elems->wide_bw_chansw_ie =
1306 elem_parse_failed = true;
1309 case WLAN_EID_COUNTRY:
1310 elems->country_elem = pos;
1311 elems->country_elem_len = elen;
1313 case WLAN_EID_PWR_CONSTRAINT:
1315 elem_parse_failed = true;
1318 elems->pwr_constr_elem = pos;
1320 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1321 /* Lots of different options exist, but we only care
1322 * about the Dynamic Transmit Power Control element.
1323 * First check for the Cisco OUI, then for the DTPC
1327 elem_parse_failed = true;
1331 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1332 pos[2] != 0x96 || pos[3] != 0x00)
1336 elem_parse_failed = true;
1341 crc = crc32_be(crc, pos - 2, elen + 2);
1343 elems->cisco_dtpc_elem = pos;
1345 case WLAN_EID_ADDBA_EXT:
1346 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1347 elem_parse_failed = true;
1350 elems->addba_ext_ie = (void *)pos;
1352 case WLAN_EID_TIMEOUT_INTERVAL:
1353 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1354 elems->timeout_int = (void *)pos;
1356 elem_parse_failed = true;
1358 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1359 if (elen >= sizeof(*elems->max_idle_period_ie))
1360 elems->max_idle_period_ie = (void *)pos;
1364 elems->rsnx_len = elen;
1366 case WLAN_EID_TX_POWER_ENVELOPE:
1368 elen > sizeof(struct ieee80211_tx_pwr_env))
1371 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1374 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1375 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1376 elems->tx_pwr_env_num++;
1378 case WLAN_EID_EXTENSION:
1379 ieee80211_parse_extension_element(calc_crc ?
1383 case WLAN_EID_S1G_CAPABILITIES:
1384 if (elen >= sizeof(*elems->s1g_capab))
1385 elems->s1g_capab = (void *)pos;
1387 elem_parse_failed = true;
1389 case WLAN_EID_S1G_OPERATION:
1390 if (elen == sizeof(*elems->s1g_oper))
1391 elems->s1g_oper = (void *)pos;
1393 elem_parse_failed = true;
1395 case WLAN_EID_S1G_BCN_COMPAT:
1396 if (elen == sizeof(*elems->s1g_bcn_compat))
1397 elems->s1g_bcn_compat = (void *)pos;
1399 elem_parse_failed = true;
1401 case WLAN_EID_AID_RESPONSE:
1402 if (elen == sizeof(struct ieee80211_aid_response_ie))
1403 elems->aid_resp = (void *)pos;
1405 elem_parse_failed = true;
1411 if (elem_parse_failed)
1412 elems->parse_error = true;
1414 __set_bit(id, seen_elems);
1417 if (!for_each_element_completed(elem, start, len))
1418 elems->parse_error = true;
1423 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1424 struct ieee802_11_elems *elems,
1425 const u8 *transmitter_bssid,
1426 const u8 *bss_bssid,
1427 u8 *nontransmitted_profile)
1429 const struct element *elem, *sub;
1430 size_t profile_len = 0;
1433 if (!bss_bssid || !transmitter_bssid)
1436 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1437 if (elem->datalen < 2)
1440 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1441 u8 new_bssid[ETH_ALEN];
1444 if (sub->id != 0 || sub->datalen < 4) {
1445 /* not a valid BSS profile */
1449 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1450 sub->data[1] != 2) {
1451 /* The first element of the
1452 * Nontransmitted BSSID Profile is not
1453 * the Nontransmitted BSSID Capability
1459 memset(nontransmitted_profile, 0, len);
1460 profile_len = cfg80211_merge_profile(start, len,
1463 nontransmitted_profile,
1466 /* found a Nontransmitted BSSID Profile */
1467 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1468 nontransmitted_profile,
1470 if (!index || index[1] < 1 || index[2] == 0) {
1471 /* Invalid MBSSID Index element */
1475 cfg80211_gen_new_bssid(transmitter_bssid,
1479 if (ether_addr_equal(new_bssid, bss_bssid)) {
1481 elems->bssid_index_len = index[1];
1482 elems->bssid_index = (void *)&index[2];
1488 return found ? profile_len : 0;
1491 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
1492 bool action, u64 filter,
1494 const u8 *transmitter_bssid,
1495 const u8 *bss_bssid)
1497 struct ieee802_11_elems *elems;
1498 const struct element *non_inherit = NULL;
1499 u8 *nontransmitted_profile;
1500 int nontransmitted_profile_len = 0;
1502 elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
1505 elems->ie_start = start;
1506 elems->total_len = len;
1508 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1509 if (nontransmitted_profile) {
1510 nontransmitted_profile_len =
1511 ieee802_11_find_bssid_profile(start, len, elems,
1514 nontransmitted_profile);
1516 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1517 nontransmitted_profile,
1518 nontransmitted_profile_len);
1521 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1524 /* Override with nontransmitted profile, if found */
1525 if (nontransmitted_profile_len)
1526 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1527 nontransmitted_profile_len,
1528 action, elems, 0, 0, NULL);
1530 if (elems->tim && !elems->parse_error) {
1531 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1533 elems->dtim_period = tim_ie->dtim_period;
1534 elems->dtim_count = tim_ie->dtim_count;
1537 /* Override DTIM period and count if needed */
1538 if (elems->bssid_index &&
1539 elems->bssid_index_len >=
1540 offsetofend(struct ieee80211_bssid_index, dtim_period))
1541 elems->dtim_period = elems->bssid_index->dtim_period;
1543 if (elems->bssid_index &&
1544 elems->bssid_index_len >=
1545 offsetofend(struct ieee80211_bssid_index, dtim_count))
1546 elems->dtim_count = elems->bssid_index->dtim_count;
1548 kfree(nontransmitted_profile);
1555 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1556 struct ieee80211_tx_queue_params
1559 struct ieee80211_chanctx_conf *chanctx_conf;
1560 const struct ieee80211_reg_rule *rrule;
1561 const struct ieee80211_wmm_ac *wmm_ac;
1562 u16 center_freq = 0;
1564 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1565 sdata->vif.type != NL80211_IFTYPE_STATION)
1569 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1571 center_freq = chanctx_conf->def.chan->center_freq;
1578 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1580 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1585 if (sdata->vif.type == NL80211_IFTYPE_AP)
1586 wmm_ac = &rrule->wmm_rule.ap[ac];
1588 wmm_ac = &rrule->wmm_rule.client[ac];
1589 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1590 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1591 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1592 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1596 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1597 bool bss_notify, bool enable_qos)
1599 struct ieee80211_local *local = sdata->local;
1600 struct ieee80211_tx_queue_params qparam;
1601 struct ieee80211_chanctx_conf *chanctx_conf;
1604 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1607 if (!local->ops->conf_tx)
1610 if (local->hw.queues < IEEE80211_NUM_ACS)
1613 memset(&qparam, 0, sizeof(qparam));
1616 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1617 use_11b = (chanctx_conf &&
1618 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1619 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1622 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1624 /* Set defaults according to 802.11-2007 Table 7-37 */
1631 /* Confiure old 802.11b/g medium access rules. */
1632 qparam.cw_max = aCWmax;
1633 qparam.cw_min = aCWmin;
1637 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1638 /* Update if QoS is enabled. */
1641 case IEEE80211_AC_BK:
1642 qparam.cw_max = aCWmax;
1643 qparam.cw_min = aCWmin;
1650 /* never happens but let's not leave undefined */
1652 case IEEE80211_AC_BE:
1653 qparam.cw_max = aCWmax;
1654 qparam.cw_min = aCWmin;
1661 case IEEE80211_AC_VI:
1662 qparam.cw_max = aCWmin;
1663 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1667 qparam.txop = 6016/32;
1669 qparam.txop = 3008/32;
1676 case IEEE80211_AC_VO:
1677 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1678 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1682 qparam.txop = 3264/32;
1684 qparam.txop = 1504/32;
1689 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1691 qparam.uapsd = false;
1693 sdata->tx_conf[ac] = qparam;
1694 drv_conf_tx(local, sdata, ac, &qparam);
1697 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1698 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1699 sdata->vif.type != NL80211_IFTYPE_NAN) {
1700 sdata->vif.bss_conf.qos = enable_qos;
1702 ieee80211_bss_info_change_notify(sdata,
1707 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1708 u16 transaction, u16 auth_alg, u16 status,
1709 const u8 *extra, size_t extra_len, const u8 *da,
1710 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1713 struct ieee80211_local *local = sdata->local;
1714 struct sk_buff *skb;
1715 struct ieee80211_mgmt *mgmt;
1718 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1719 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1720 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1724 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1726 mgmt = skb_put_zero(skb, 24 + 6);
1727 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1728 IEEE80211_STYPE_AUTH);
1729 memcpy(mgmt->da, da, ETH_ALEN);
1730 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1731 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1732 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1733 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1734 mgmt->u.auth.status_code = cpu_to_le16(status);
1736 skb_put_data(skb, extra, extra_len);
1738 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1739 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1740 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1747 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1749 ieee80211_tx_skb(sdata, skb);
1752 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1753 const u8 *da, const u8 *bssid,
1754 u16 stype, u16 reason,
1755 bool send_frame, u8 *frame_buf)
1757 struct ieee80211_local *local = sdata->local;
1758 struct sk_buff *skb;
1759 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1762 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1763 mgmt->duration = 0; /* initialize only */
1764 mgmt->seq_ctrl = 0; /* initialize only */
1765 memcpy(mgmt->da, da, ETH_ALEN);
1766 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1767 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1768 /* u.deauth.reason_code == u.disassoc.reason_code */
1769 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1772 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1773 IEEE80211_DEAUTH_FRAME_LEN);
1777 skb_reserve(skb, local->hw.extra_tx_headroom);
1780 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1782 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1783 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1784 IEEE80211_SKB_CB(skb)->flags |=
1785 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1787 ieee80211_tx_skb(sdata, skb);
1791 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1793 if ((end - pos) < 5)
1796 *pos++ = WLAN_EID_EXTENSION;
1797 *pos++ = 1 + sizeof(cap);
1798 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1799 memcpy(pos, &cap, sizeof(cap));
1804 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1805 u8 *buffer, size_t buffer_len,
1806 const u8 *ie, size_t ie_len,
1807 enum nl80211_band band,
1809 struct cfg80211_chan_def *chandef,
1810 size_t *offset, u32 flags)
1812 struct ieee80211_local *local = sdata->local;
1813 struct ieee80211_supported_band *sband;
1814 const struct ieee80211_sta_he_cap *he_cap;
1815 const struct ieee80211_sta_eht_cap *eht_cap;
1816 u8 *pos = buffer, *end = buffer + buffer_len;
1818 int supp_rates_len, i;
1824 bool have_80mhz = false;
1828 sband = local->hw.wiphy->bands[band];
1829 if (WARN_ON_ONCE(!sband))
1832 rate_flags = ieee80211_chandef_rate_flags(chandef);
1833 shift = ieee80211_chandef_get_shift(chandef);
1836 for (i = 0; i < sband->n_bitrates; i++) {
1837 if ((BIT(i) & rate_mask) == 0)
1838 continue; /* skip rate */
1839 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1842 rates[num_rates++] =
1843 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1847 supp_rates_len = min_t(int, num_rates, 8);
1849 if (end - pos < 2 + supp_rates_len)
1851 *pos++ = WLAN_EID_SUPP_RATES;
1852 *pos++ = supp_rates_len;
1853 memcpy(pos, rates, supp_rates_len);
1854 pos += supp_rates_len;
1856 /* insert "request information" if in custom IEs */
1858 static const u8 before_extrates[] = {
1860 WLAN_EID_SUPP_RATES,
1863 noffset = ieee80211_ie_split(ie, ie_len,
1865 ARRAY_SIZE(before_extrates),
1867 if (end - pos < noffset - *offset)
1869 memcpy(pos, ie + *offset, noffset - *offset);
1870 pos += noffset - *offset;
1874 ext_rates_len = num_rates - supp_rates_len;
1875 if (ext_rates_len > 0) {
1876 if (end - pos < 2 + ext_rates_len)
1878 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1879 *pos++ = ext_rates_len;
1880 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1881 pos += ext_rates_len;
1884 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1887 *pos++ = WLAN_EID_DS_PARAMS;
1889 *pos++ = ieee80211_frequency_to_channel(
1890 chandef->chan->center_freq);
1893 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1896 /* insert custom IEs that go before HT */
1898 static const u8 before_ht[] = {
1900 * no need to list the ones split off already
1901 * (or generated here)
1904 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1906 noffset = ieee80211_ie_split(ie, ie_len,
1907 before_ht, ARRAY_SIZE(before_ht),
1909 if (end - pos < noffset - *offset)
1911 memcpy(pos, ie + *offset, noffset - *offset);
1912 pos += noffset - *offset;
1916 if (sband->ht_cap.ht_supported) {
1917 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1919 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1923 /* insert custom IEs that go before VHT */
1925 static const u8 before_vht[] = {
1927 * no need to list the ones split off already
1928 * (or generated here)
1930 WLAN_EID_BSS_COEX_2040,
1931 WLAN_EID_EXT_CAPABILITY,
1933 WLAN_EID_CHANNEL_USAGE,
1934 WLAN_EID_INTERWORKING,
1936 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1938 noffset = ieee80211_ie_split(ie, ie_len,
1939 before_vht, ARRAY_SIZE(before_vht),
1941 if (end - pos < noffset - *offset)
1943 memcpy(pos, ie + *offset, noffset - *offset);
1944 pos += noffset - *offset;
1948 /* Check if any channel in this sband supports at least 80 MHz */
1949 for (i = 0; i < sband->n_channels; i++) {
1950 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1951 IEEE80211_CHAN_NO_80MHZ))
1958 if (sband->vht_cap.vht_supported && have_80mhz) {
1959 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1961 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1962 sband->vht_cap.cap);
1965 /* insert custom IEs that go before HE */
1967 static const u8 before_he[] = {
1969 * no need to list the ones split off before VHT
1972 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1974 /* TODO: add 11ah/11aj/11ak elements */
1976 noffset = ieee80211_ie_split(ie, ie_len,
1977 before_he, ARRAY_SIZE(before_he),
1979 if (end - pos < noffset - *offset)
1981 memcpy(pos, ie + *offset, noffset - *offset);
1982 pos += noffset - *offset;
1986 he_cap = ieee80211_get_he_iftype_cap(sband,
1987 ieee80211_vif_type_p2p(&sdata->vif));
1989 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1990 IEEE80211_CHAN_NO_HE)) {
1991 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
1996 eht_cap = ieee80211_get_eht_iftype_cap(sband,
1997 ieee80211_vif_type_p2p(&sdata->vif));
2000 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2001 IEEE80211_CHAN_NO_HE |
2002 IEEE80211_CHAN_NO_EHT)) {
2003 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end);
2008 if (cfg80211_any_usable_channels(local->hw.wiphy,
2009 BIT(NL80211_BAND_6GHZ),
2010 IEEE80211_CHAN_NO_HE)) {
2011 struct ieee80211_supported_band *sband6;
2013 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2014 he_cap = ieee80211_get_he_iftype_cap(sband6,
2015 ieee80211_vif_type_p2p(&sdata->vif));
2018 enum nl80211_iftype iftype =
2019 ieee80211_vif_type_p2p(&sdata->vif);
2020 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
2022 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2027 * If adding more here, adjust code in main.c
2028 * that calculates local->scan_ies_len.
2031 return pos - buffer;
2033 WARN_ONCE(1, "not enough space for preq IEs\n");
2035 return pos - buffer;
2038 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2040 struct ieee80211_scan_ies *ie_desc,
2041 const u8 *ie, size_t ie_len,
2042 u8 bands_used, u32 *rate_masks,
2043 struct cfg80211_chan_def *chandef,
2046 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2049 memset(ie_desc, 0, sizeof(*ie_desc));
2051 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2052 if (bands_used & BIT(i)) {
2053 pos += ieee80211_build_preq_ies_band(sdata,
2061 ie_desc->ies[i] = buffer + old_pos;
2062 ie_desc->len[i] = pos - old_pos;
2067 /* add any remaining custom IEs */
2069 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2070 "not enough space for preq custom IEs\n"))
2072 memcpy(buffer + pos, ie + custom_ie_offset,
2073 ie_len - custom_ie_offset);
2074 ie_desc->common_ies = buffer + pos;
2075 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2076 pos += ie_len - custom_ie_offset;
2082 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2083 const u8 *src, const u8 *dst,
2085 struct ieee80211_channel *chan,
2086 const u8 *ssid, size_t ssid_len,
2087 const u8 *ie, size_t ie_len,
2090 struct ieee80211_local *local = sdata->local;
2091 struct cfg80211_chan_def chandef;
2092 struct sk_buff *skb;
2093 struct ieee80211_mgmt *mgmt;
2095 u32 rate_masks[NUM_NL80211_BANDS] = {};
2096 struct ieee80211_scan_ies dummy_ie_desc;
2099 * Do not send DS Channel parameter for directed probe requests
2100 * in order to maximize the chance that we get a response. Some
2101 * badly-behaved APs don't respond when this parameter is included.
2103 chandef.width = sdata->vif.bss_conf.chandef.width;
2104 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2105 chandef.chan = NULL;
2107 chandef.chan = chan;
2109 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2110 local->scan_ies_len + ie_len);
2114 rate_masks[chan->band] = ratemask;
2115 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2116 skb_tailroom(skb), &dummy_ie_desc,
2117 ie, ie_len, BIT(chan->band),
2118 rate_masks, &chandef, flags);
2119 skb_put(skb, ies_len);
2122 mgmt = (struct ieee80211_mgmt *) skb->data;
2123 memcpy(mgmt->da, dst, ETH_ALEN);
2124 memcpy(mgmt->bssid, dst, ETH_ALEN);
2127 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2132 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2133 struct ieee802_11_elems *elems,
2134 enum nl80211_band band, u32 *basic_rates)
2136 struct ieee80211_supported_band *sband;
2138 u32 supp_rates, rate_flags;
2141 sband = sdata->local->hw.wiphy->bands[band];
2142 if (WARN_ON(!sband))
2145 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2146 shift = ieee80211_vif_get_shift(&sdata->vif);
2148 num_rates = sband->n_bitrates;
2150 for (i = 0; i < elems->supp_rates_len +
2151 elems->ext_supp_rates_len; i++) {
2155 if (i < elems->supp_rates_len)
2156 rate = elems->supp_rates[i];
2157 else if (elems->ext_supp_rates)
2158 rate = elems->ext_supp_rates
2159 [i - elems->supp_rates_len];
2160 own_rate = 5 * (rate & 0x7f);
2161 is_basic = !!(rate & 0x80);
2163 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2166 for (j = 0; j < num_rates; j++) {
2168 if ((rate_flags & sband->bitrates[j].flags)
2172 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2175 if (brate == own_rate) {
2176 supp_rates |= BIT(j);
2177 if (basic_rates && is_basic)
2178 *basic_rates |= BIT(j);
2185 void ieee80211_stop_device(struct ieee80211_local *local)
2187 ieee80211_led_radio(local, false);
2188 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2190 cancel_work_sync(&local->reconfig_filter);
2192 flush_workqueue(local->workqueue);
2196 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2199 /* It's possible that we don't handle the scan completion in
2200 * time during suspend, so if it's still marked as completed
2201 * here, queue the work and flush it to clean things up.
2202 * Instead of calling the worker function directly here, we
2203 * really queue it to avoid potential races with other flows
2204 * scheduling the same work.
2206 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2207 /* If coming from reconfiguration failure, abort the scan so
2208 * we don't attempt to continue a partial HW scan - which is
2209 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2210 * completed scan, and a 5 GHz portion is still pending.
2213 set_bit(SCAN_ABORTED, &local->scanning);
2214 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2215 flush_delayed_work(&local->scan_work);
2219 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2221 struct ieee80211_sub_if_data *sdata;
2222 struct ieee80211_chanctx *ctx;
2225 * We get here if during resume the device can't be restarted properly.
2226 * We might also get here if this happens during HW reset, which is a
2227 * slightly different situation and we need to drop all connections in
2230 * Ask cfg80211 to turn off all interfaces, this will result in more
2231 * warnings but at least we'll then get into a clean stopped state.
2234 local->resuming = false;
2235 local->suspended = false;
2236 local->in_reconfig = false;
2238 ieee80211_flush_completed_scan(local, true);
2240 /* scheduled scan clearly can't be running any more, but tell
2241 * cfg80211 and clear local state
2243 ieee80211_sched_scan_end(local);
2245 list_for_each_entry(sdata, &local->interfaces, list)
2246 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2248 /* Mark channel contexts as not being in the driver any more to avoid
2249 * removing them from the driver during the shutdown process...
2251 mutex_lock(&local->chanctx_mtx);
2252 list_for_each_entry(ctx, &local->chanctx_list, list)
2253 ctx->driver_present = false;
2254 mutex_unlock(&local->chanctx_mtx);
2257 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2258 struct ieee80211_sub_if_data *sdata)
2260 struct ieee80211_chanctx_conf *conf;
2261 struct ieee80211_chanctx *ctx;
2263 if (!local->use_chanctx)
2266 mutex_lock(&local->chanctx_mtx);
2267 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2268 lockdep_is_held(&local->chanctx_mtx));
2270 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2271 drv_assign_vif_chanctx(local, sdata, ctx);
2273 mutex_unlock(&local->chanctx_mtx);
2276 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2278 struct ieee80211_local *local = sdata->local;
2279 struct sta_info *sta;
2282 mutex_lock(&local->sta_mtx);
2283 list_for_each_entry(sta, &local->sta_list, list) {
2284 enum ieee80211_sta_state state;
2286 if (!sta->uploaded || sta->sdata != sdata)
2289 for (state = IEEE80211_STA_NOTEXIST;
2290 state < sta->sta_state; state++)
2291 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2294 mutex_unlock(&local->sta_mtx);
2297 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2299 struct cfg80211_nan_func *func, **funcs;
2302 res = drv_start_nan(sdata->local, sdata,
2303 &sdata->u.nan.conf);
2307 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2313 /* Add all the functions:
2314 * This is a little bit ugly. We need to call a potentially sleeping
2315 * callback for each NAN function, so we can't hold the spinlock.
2317 spin_lock_bh(&sdata->u.nan.func_lock);
2319 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2322 spin_unlock_bh(&sdata->u.nan.func_lock);
2324 for (i = 0; funcs[i]; i++) {
2325 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2327 ieee80211_nan_func_terminated(&sdata->vif,
2328 funcs[i]->instance_id,
2329 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2338 int ieee80211_reconfig(struct ieee80211_local *local)
2340 struct ieee80211_hw *hw = &local->hw;
2341 struct ieee80211_sub_if_data *sdata;
2342 struct ieee80211_chanctx *ctx;
2343 struct sta_info *sta;
2345 bool reconfig_due_to_wowlan = false;
2346 struct ieee80211_sub_if_data *sched_scan_sdata;
2347 struct cfg80211_sched_scan_request *sched_scan_req;
2348 bool sched_scan_stopped = false;
2349 bool suspended = local->suspended;
2350 bool in_reconfig = false;
2352 /* nothing to do if HW shouldn't run */
2353 if (!local->open_count)
2358 local->resuming = true;
2360 if (local->wowlan) {
2362 * In the wowlan case, both mac80211 and the device
2363 * are functional when the resume op is called, so
2364 * clear local->suspended so the device could operate
2365 * normally (e.g. pass rx frames).
2367 local->suspended = false;
2368 res = drv_resume(local);
2369 local->wowlan = false;
2371 local->resuming = false;
2378 * res is 1, which means the driver requested
2379 * to go through a regular reset on wakeup.
2380 * restore local->suspended in this case.
2382 reconfig_due_to_wowlan = true;
2383 local->suspended = true;
2388 * In case of hw_restart during suspend (without wowlan),
2389 * cancel restart work, as we are reconfiguring the device
2391 * Note that restart_work is scheduled on a frozen workqueue,
2392 * so we can't deadlock in this case.
2394 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2395 cancel_work_sync(&local->restart_work);
2397 local->started = false;
2400 * Upon resume hardware can sometimes be goofy due to
2401 * various platform / driver / bus issues, so restarting
2402 * the device may at times not work immediately. Propagate
2405 res = drv_start(local);
2408 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2410 WARN(1, "Hardware became unavailable during restart.\n");
2411 ieee80211_handle_reconfig_failure(local);
2415 /* setup fragmentation threshold */
2416 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2418 /* setup RTS threshold */
2419 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2421 /* reset coverage class */
2422 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2424 ieee80211_led_radio(local, true);
2425 ieee80211_mod_tpt_led_trig(local,
2426 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2428 /* add interfaces */
2429 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2431 /* in HW restart it exists already */
2432 WARN_ON(local->resuming);
2433 res = drv_add_interface(local, sdata);
2435 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2441 list_for_each_entry(sdata, &local->interfaces, list) {
2442 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2443 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2444 ieee80211_sdata_running(sdata)) {
2445 res = drv_add_interface(local, sdata);
2451 /* If adding any of the interfaces failed above, roll back and
2455 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2457 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2458 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2459 ieee80211_sdata_running(sdata))
2460 drv_remove_interface(local, sdata);
2461 ieee80211_handle_reconfig_failure(local);
2465 /* add channel contexts */
2466 if (local->use_chanctx) {
2467 mutex_lock(&local->chanctx_mtx);
2468 list_for_each_entry(ctx, &local->chanctx_list, list)
2469 if (ctx->replace_state !=
2470 IEEE80211_CHANCTX_REPLACES_OTHER)
2471 WARN_ON(drv_add_chanctx(local, ctx));
2472 mutex_unlock(&local->chanctx_mtx);
2474 sdata = wiphy_dereference(local->hw.wiphy,
2475 local->monitor_sdata);
2476 if (sdata && ieee80211_sdata_running(sdata))
2477 ieee80211_assign_chanctx(local, sdata);
2480 /* reconfigure hardware */
2481 ieee80211_hw_config(local, ~0);
2483 ieee80211_configure_filter(local);
2485 /* Finally also reconfigure all the BSS information */
2486 list_for_each_entry(sdata, &local->interfaces, list) {
2489 if (!ieee80211_sdata_running(sdata))
2492 ieee80211_assign_chanctx(local, sdata);
2494 switch (sdata->vif.type) {
2495 case NL80211_IFTYPE_AP_VLAN:
2496 case NL80211_IFTYPE_MONITOR:
2498 case NL80211_IFTYPE_ADHOC:
2499 if (sdata->vif.bss_conf.ibss_joined)
2500 WARN_ON(drv_join_ibss(local, sdata));
2503 ieee80211_reconfig_stations(sdata);
2505 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2506 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2507 drv_conf_tx(local, sdata, i,
2508 &sdata->tx_conf[i]);
2512 /* common change flags for all interface types */
2513 changed = BSS_CHANGED_ERP_CTS_PROT |
2514 BSS_CHANGED_ERP_PREAMBLE |
2515 BSS_CHANGED_ERP_SLOT |
2517 BSS_CHANGED_BASIC_RATES |
2518 BSS_CHANGED_BEACON_INT |
2523 BSS_CHANGED_TXPOWER |
2524 BSS_CHANGED_MCAST_RATE;
2526 if (sdata->vif.mu_mimo_owner)
2527 changed |= BSS_CHANGED_MU_GROUPS;
2529 switch (sdata->vif.type) {
2530 case NL80211_IFTYPE_STATION:
2531 changed |= BSS_CHANGED_ASSOC |
2532 BSS_CHANGED_ARP_FILTER |
2535 /* Re-send beacon info report to the driver */
2536 if (sdata->u.mgd.have_beacon)
2537 changed |= BSS_CHANGED_BEACON_INFO;
2539 if (sdata->vif.bss_conf.max_idle_period ||
2540 sdata->vif.bss_conf.protected_keep_alive)
2541 changed |= BSS_CHANGED_KEEP_ALIVE;
2544 ieee80211_bss_info_change_notify(sdata, changed);
2545 sdata_unlock(sdata);
2547 case NL80211_IFTYPE_OCB:
2548 changed |= BSS_CHANGED_OCB;
2549 ieee80211_bss_info_change_notify(sdata, changed);
2551 case NL80211_IFTYPE_ADHOC:
2552 changed |= BSS_CHANGED_IBSS;
2554 case NL80211_IFTYPE_AP:
2555 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2557 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2558 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2559 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2560 changed |= BSS_CHANGED_FTM_RESPONDER;
2562 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2563 changed |= BSS_CHANGED_AP_PROBE_RESP;
2565 if (rcu_access_pointer(sdata->u.ap.beacon))
2566 drv_start_ap(local, sdata);
2569 case NL80211_IFTYPE_MESH_POINT:
2570 if (sdata->vif.bss_conf.enable_beacon) {
2571 changed |= BSS_CHANGED_BEACON |
2572 BSS_CHANGED_BEACON_ENABLED;
2573 ieee80211_bss_info_change_notify(sdata, changed);
2576 case NL80211_IFTYPE_NAN:
2577 res = ieee80211_reconfig_nan(sdata);
2579 ieee80211_handle_reconfig_failure(local);
2583 case NL80211_IFTYPE_AP_VLAN:
2584 case NL80211_IFTYPE_MONITOR:
2585 case NL80211_IFTYPE_P2P_DEVICE:
2588 case NL80211_IFTYPE_UNSPECIFIED:
2589 case NUM_NL80211_IFTYPES:
2590 case NL80211_IFTYPE_P2P_CLIENT:
2591 case NL80211_IFTYPE_P2P_GO:
2592 case NL80211_IFTYPE_WDS:
2598 ieee80211_recalc_ps(local);
2601 * The sta might be in psm against the ap (e.g. because
2602 * this was the state before a hw restart), so we
2603 * explicitly send a null packet in order to make sure
2604 * it'll sync against the ap (and get out of psm).
2606 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2607 list_for_each_entry(sdata, &local->interfaces, list) {
2608 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2610 if (!sdata->u.mgd.associated)
2613 ieee80211_send_nullfunc(local, sdata, false);
2617 /* APs are now beaconing, add back stations */
2618 mutex_lock(&local->sta_mtx);
2619 list_for_each_entry(sta, &local->sta_list, list) {
2620 enum ieee80211_sta_state state;
2625 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2626 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2629 for (state = IEEE80211_STA_NOTEXIST;
2630 state < sta->sta_state; state++)
2631 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2634 mutex_unlock(&local->sta_mtx);
2637 list_for_each_entry(sdata, &local->interfaces, list)
2638 ieee80211_reenable_keys(sdata);
2640 /* Reconfigure sched scan if it was interrupted by FW restart */
2641 mutex_lock(&local->mtx);
2642 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2643 lockdep_is_held(&local->mtx));
2644 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2645 lockdep_is_held(&local->mtx));
2646 if (sched_scan_sdata && sched_scan_req)
2648 * Sched scan stopped, but we don't want to report it. Instead,
2649 * we're trying to reschedule. However, if more than one scan
2650 * plan was set, we cannot reschedule since we don't know which
2651 * scan plan was currently running (and some scan plans may have
2652 * already finished).
2654 if (sched_scan_req->n_scan_plans > 1 ||
2655 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2657 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2658 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2659 sched_scan_stopped = true;
2661 mutex_unlock(&local->mtx);
2663 if (sched_scan_stopped)
2664 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2668 if (local->monitors == local->open_count && local->monitors > 0)
2669 ieee80211_add_virtual_monitor(local);
2672 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2673 * sessions can be established after a resume.
2675 * Also tear down aggregation sessions since reconfiguring
2676 * them in a hardware restart scenario is not easily done
2677 * right now, and the hardware will have lost information
2678 * about the sessions, but we and the AP still think they
2679 * are active. This is really a workaround though.
2681 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2682 mutex_lock(&local->sta_mtx);
2684 list_for_each_entry(sta, &local->sta_list, list) {
2685 if (!local->resuming)
2686 ieee80211_sta_tear_down_BA_sessions(
2687 sta, AGG_STOP_LOCAL_REQUEST);
2688 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2691 mutex_unlock(&local->sta_mtx);
2695 * If this is for hw restart things are still running.
2696 * We may want to change that later, however.
2698 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2699 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2701 if (local->in_reconfig) {
2702 in_reconfig = local->in_reconfig;
2703 local->in_reconfig = false;
2706 /* Restart deferred ROCs */
2707 mutex_lock(&local->mtx);
2708 ieee80211_start_next_roc(local);
2709 mutex_unlock(&local->mtx);
2711 /* Requeue all works */
2712 list_for_each_entry(sdata, &local->interfaces, list)
2713 ieee80211_queue_work(&local->hw, &sdata->work);
2716 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2717 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2721 list_for_each_entry(sdata, &local->interfaces, list) {
2722 if (!ieee80211_sdata_running(sdata))
2724 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2725 ieee80211_sta_restart(sdata);
2733 /* first set suspended false, then resuming */
2734 local->suspended = false;
2736 local->resuming = false;
2738 ieee80211_flush_completed_scan(local, false);
2740 if (local->open_count && !reconfig_due_to_wowlan)
2741 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2743 list_for_each_entry(sdata, &local->interfaces, list) {
2744 if (!ieee80211_sdata_running(sdata))
2746 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2747 ieee80211_sta_restart(sdata);
2750 mod_timer(&local->sta_cleanup, jiffies + 1);
2758 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2760 struct ieee80211_sub_if_data *sdata;
2761 struct ieee80211_local *local;
2762 struct ieee80211_key *key;
2767 sdata = vif_to_sdata(vif);
2768 local = sdata->local;
2770 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2774 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2775 !local->in_reconfig))
2778 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2781 sdata->flags |= flag;
2783 mutex_lock(&local->key_mtx);
2784 list_for_each_entry(key, &sdata->key_list, list)
2785 key->flags |= KEY_FLAG_TAINTED;
2786 mutex_unlock(&local->key_mtx);
2789 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2791 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2793 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2795 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2797 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2799 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2801 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2803 struct ieee80211_local *local = sdata->local;
2804 struct ieee80211_chanctx_conf *chanctx_conf;
2805 struct ieee80211_chanctx *chanctx;
2807 mutex_lock(&local->chanctx_mtx);
2809 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2810 lockdep_is_held(&local->chanctx_mtx));
2813 * This function can be called from a work, thus it may be possible
2814 * that the chanctx_conf is removed (due to a disconnection, for
2816 * So nothing should be done in such case.
2821 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2822 ieee80211_recalc_smps_chanctx(local, chanctx);
2824 mutex_unlock(&local->chanctx_mtx);
2827 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2829 struct ieee80211_local *local = sdata->local;
2830 struct ieee80211_chanctx_conf *chanctx_conf;
2831 struct ieee80211_chanctx *chanctx;
2833 mutex_lock(&local->chanctx_mtx);
2835 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2836 lockdep_is_held(&local->chanctx_mtx));
2838 if (WARN_ON_ONCE(!chanctx_conf))
2841 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2842 ieee80211_recalc_chanctx_min_def(local, chanctx);
2844 mutex_unlock(&local->chanctx_mtx);
2847 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2849 size_t pos = offset;
2851 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2852 pos += 2 + ies[pos + 1];
2857 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2862 *pos++ = WLAN_EID_HT_CAPABILITY;
2863 *pos++ = sizeof(struct ieee80211_ht_cap);
2864 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2866 /* capability flags */
2867 tmp = cpu_to_le16(cap);
2868 memcpy(pos, &tmp, sizeof(u16));
2871 /* AMPDU parameters */
2872 *pos++ = ht_cap->ampdu_factor |
2873 (ht_cap->ampdu_density <<
2874 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2877 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2878 pos += sizeof(ht_cap->mcs);
2880 /* extended capabilities */
2881 pos += sizeof(__le16);
2883 /* BF capabilities */
2884 pos += sizeof(__le32);
2886 /* antenna selection */
2892 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2897 *pos++ = WLAN_EID_VHT_CAPABILITY;
2898 *pos++ = sizeof(struct ieee80211_vht_cap);
2899 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2901 /* capability flags */
2902 tmp = cpu_to_le32(cap);
2903 memcpy(pos, &tmp, sizeof(u32));
2907 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2908 pos += sizeof(vht_cap->vht_mcs);
2913 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2915 const struct ieee80211_sta_he_cap *he_cap;
2916 struct ieee80211_supported_band *sband;
2919 sband = ieee80211_get_sband(sdata);
2923 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2927 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2929 sizeof(he_cap->he_cap_elem) + n +
2930 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2931 he_cap->he_cap_elem.phy_cap_info);
2934 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos,
2935 const struct ieee80211_sta_he_cap *he_cap,
2938 struct ieee80211_he_cap_elem elem;
2943 /* Make sure we have place for the IE */
2945 * TODO: the 1 added is because this temporarily is under the EXTENSION
2946 * IE. Get rid of it when it moves.
2951 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
2952 elem = he_cap->he_cap_elem;
2954 if (disable_flags & IEEE80211_STA_DISABLE_40MHZ)
2955 elem.phy_cap_info[0] &=
2956 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2957 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
2959 if (disable_flags & IEEE80211_STA_DISABLE_160MHZ)
2960 elem.phy_cap_info[0] &=
2961 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
2963 if (disable_flags & IEEE80211_STA_DISABLE_80P80MHZ)
2964 elem.phy_cap_info[0] &=
2965 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
2967 n = ieee80211_he_mcs_nss_size(&elem);
2969 sizeof(he_cap->he_cap_elem) + n +
2970 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2971 he_cap->he_cap_elem.phy_cap_info);
2973 if ((end - pos) < ie_len)
2976 *pos++ = WLAN_EID_EXTENSION;
2977 pos++; /* We'll set the size later below */
2978 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2981 memcpy(pos, &elem, sizeof(elem));
2982 pos += sizeof(elem);
2984 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2987 /* Check if PPE Threshold should be present */
2988 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2989 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2993 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2994 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2996 n = hweight8(he_cap->ppe_thres[0] &
2997 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2998 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2999 IEEE80211_PPE_THRES_NSS_POS));
3002 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3005 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3006 n = DIV_ROUND_UP(n, 8);
3008 /* Copy PPE Thresholds */
3009 memcpy(pos, &he_cap->ppe_thres, n);
3013 orig_pos[1] = (pos - orig_pos) - 2;
3017 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3018 struct sk_buff *skb)
3020 struct ieee80211_supported_band *sband;
3021 const struct ieee80211_sband_iftype_data *iftd;
3022 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3026 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3027 BIT(NL80211_BAND_6GHZ),
3028 IEEE80211_CHAN_NO_HE))
3031 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3033 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3037 /* Check for device HE 6 GHz capability before adding element */
3038 if (!iftd->he_6ghz_capa.capa)
3041 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3042 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3044 switch (sdata->smps_mode) {
3045 case IEEE80211_SMPS_AUTOMATIC:
3046 case IEEE80211_SMPS_NUM_MODES:
3049 case IEEE80211_SMPS_OFF:
3050 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3051 IEEE80211_HE_6GHZ_CAP_SM_PS);
3053 case IEEE80211_SMPS_STATIC:
3054 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3055 IEEE80211_HE_6GHZ_CAP_SM_PS);
3057 case IEEE80211_SMPS_DYNAMIC:
3058 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3059 IEEE80211_HE_6GHZ_CAP_SM_PS);
3063 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3064 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3065 pos + 2 + 1 + sizeof(cap));
3068 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3069 const struct cfg80211_chan_def *chandef,
3070 u16 prot_mode, bool rifs_mode)
3072 struct ieee80211_ht_operation *ht_oper;
3073 /* Build HT Information */
3074 *pos++ = WLAN_EID_HT_OPERATION;
3075 *pos++ = sizeof(struct ieee80211_ht_operation);
3076 ht_oper = (struct ieee80211_ht_operation *)pos;
3077 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3078 chandef->chan->center_freq);
3079 switch (chandef->width) {
3080 case NL80211_CHAN_WIDTH_160:
3081 case NL80211_CHAN_WIDTH_80P80:
3082 case NL80211_CHAN_WIDTH_80:
3083 case NL80211_CHAN_WIDTH_40:
3084 if (chandef->center_freq1 > chandef->chan->center_freq)
3085 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3087 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3089 case NL80211_CHAN_WIDTH_320:
3090 /* HT information element should not be included on 6GHz */
3094 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3097 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3098 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3099 chandef->width != NL80211_CHAN_WIDTH_20)
3100 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3103 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3105 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3106 ht_oper->stbc_param = 0x0000;
3108 /* It seems that Basic MCS set and Supported MCS set
3109 are identical for the first 10 bytes */
3110 memset(&ht_oper->basic_set, 0, 16);
3111 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3113 return pos + sizeof(struct ieee80211_ht_operation);
3116 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3117 const struct cfg80211_chan_def *chandef)
3119 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3120 *pos++ = 3; /* IE length */
3121 /* New channel width */
3122 switch (chandef->width) {
3123 case NL80211_CHAN_WIDTH_80:
3124 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3126 case NL80211_CHAN_WIDTH_160:
3127 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3129 case NL80211_CHAN_WIDTH_80P80:
3130 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3132 case NL80211_CHAN_WIDTH_320:
3133 /* The behavior is not defined for 320 MHz channels */
3137 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3140 /* new center frequency segment 0 */
3141 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3142 /* new center frequency segment 1 */
3143 if (chandef->center_freq2)
3144 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3149 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3150 const struct cfg80211_chan_def *chandef)
3152 struct ieee80211_vht_operation *vht_oper;
3154 *pos++ = WLAN_EID_VHT_OPERATION;
3155 *pos++ = sizeof(struct ieee80211_vht_operation);
3156 vht_oper = (struct ieee80211_vht_operation *)pos;
3157 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3158 chandef->center_freq1);
3159 if (chandef->center_freq2)
3160 vht_oper->center_freq_seg1_idx =
3161 ieee80211_frequency_to_channel(chandef->center_freq2);
3163 vht_oper->center_freq_seg1_idx = 0x00;
3165 switch (chandef->width) {
3166 case NL80211_CHAN_WIDTH_160:
3168 * Convert 160 MHz channel width to new style as interop
3171 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3172 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3173 if (chandef->chan->center_freq < chandef->center_freq1)
3174 vht_oper->center_freq_seg0_idx -= 8;
3176 vht_oper->center_freq_seg0_idx += 8;
3178 case NL80211_CHAN_WIDTH_80P80:
3180 * Convert 80+80 MHz channel width to new style as interop
3183 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3185 case NL80211_CHAN_WIDTH_80:
3186 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3188 case NL80211_CHAN_WIDTH_320:
3189 /* VHT information element should not be included on 6GHz */
3193 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3197 /* don't require special VHT peer rates */
3198 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3200 return pos + sizeof(struct ieee80211_vht_operation);
3203 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3205 struct ieee80211_he_operation *he_oper;
3206 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3208 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3210 if (chandef->chan->band == NL80211_BAND_6GHZ)
3211 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3213 *pos++ = WLAN_EID_EXTENSION;
3215 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3218 he_oper_params |= u32_encode_bits(1023, /* disabled */
3219 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3220 he_oper_params |= u32_encode_bits(1,
3221 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3222 he_oper_params |= u32_encode_bits(1,
3223 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3224 if (chandef->chan->band == NL80211_BAND_6GHZ)
3225 he_oper_params |= u32_encode_bits(1,
3226 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3228 he_oper = (struct ieee80211_he_operation *)pos;
3229 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3231 /* don't require special HE peer rates */
3232 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3233 pos += sizeof(struct ieee80211_he_operation);
3235 if (chandef->chan->band != NL80211_BAND_6GHZ)
3238 /* TODO add VHT operational */
3239 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3240 he_6ghz_op->minrate = 6; /* 6 Mbps */
3241 he_6ghz_op->primary =
3242 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3244 ieee80211_frequency_to_channel(chandef->center_freq1);
3245 if (chandef->center_freq2)
3247 ieee80211_frequency_to_channel(chandef->center_freq2);
3249 he_6ghz_op->ccfs1 = 0;
3251 switch (chandef->width) {
3252 case NL80211_CHAN_WIDTH_320:
3254 * TODO: mesh operation is not defined over 6GHz 320 MHz
3259 case NL80211_CHAN_WIDTH_160:
3260 /* Convert 160 MHz channel width to new style as interop
3263 he_6ghz_op->control =
3264 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3265 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3266 if (chandef->chan->center_freq < chandef->center_freq1)
3267 he_6ghz_op->ccfs0 -= 8;
3269 he_6ghz_op->ccfs0 += 8;
3271 case NL80211_CHAN_WIDTH_80P80:
3272 he_6ghz_op->control =
3273 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3275 case NL80211_CHAN_WIDTH_80:
3276 he_6ghz_op->control =
3277 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3279 case NL80211_CHAN_WIDTH_40:
3280 he_6ghz_op->control =
3281 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3284 he_6ghz_op->control =
3285 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3289 pos += sizeof(struct ieee80211_he_6ghz_oper);
3295 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3296 struct cfg80211_chan_def *chandef)
3298 enum nl80211_channel_type channel_type;
3303 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3304 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3305 channel_type = NL80211_CHAN_HT20;
3307 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3308 channel_type = NL80211_CHAN_HT40PLUS;
3310 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3311 channel_type = NL80211_CHAN_HT40MINUS;
3317 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3321 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3322 const struct ieee80211_vht_operation *oper,
3323 const struct ieee80211_ht_operation *htop,
3324 struct cfg80211_chan_def *chandef)
3326 struct cfg80211_chan_def new = *chandef;
3328 int ccfs0, ccfs1, ccfs2;
3331 bool support_80_80 = false;
3332 bool support_160 = false;
3333 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3334 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3335 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3336 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3341 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3342 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3343 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3344 support_80_80 = ((vht_cap &
3345 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3346 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3347 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3348 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3349 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3350 ccfs0 = oper->center_freq_seg0_idx;
3351 ccfs1 = oper->center_freq_seg1_idx;
3352 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3353 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3354 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3358 /* if not supported, parse as though we didn't understand it */
3359 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3360 ext_nss_bw_supp = 0;
3363 * Cf. IEEE 802.11 Table 9-250
3365 * We really just consider that because it's inefficient to connect
3366 * at a higher bandwidth than we'll actually be able to use.
3368 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3372 support_160 = false;
3373 support_80_80 = false;
3376 support_80_80 = false;
3399 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3400 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3402 switch (oper->chan_width) {
3403 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3404 /* just use HT information directly */
3406 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3407 new.width = NL80211_CHAN_WIDTH_80;
3408 new.center_freq1 = cf0;
3409 /* If needed, adjust based on the newer interop workaround. */
3413 diff = abs(ccf1 - ccf0);
3414 if ((diff == 8) && support_160) {
3415 new.width = NL80211_CHAN_WIDTH_160;
3416 new.center_freq1 = cf1;
3417 } else if ((diff > 8) && support_80_80) {
3418 new.width = NL80211_CHAN_WIDTH_80P80;
3419 new.center_freq2 = cf1;
3423 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3424 /* deprecated encoding */
3425 new.width = NL80211_CHAN_WIDTH_160;
3426 new.center_freq1 = cf0;
3428 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3429 /* deprecated encoding */
3430 new.width = NL80211_CHAN_WIDTH_80P80;
3431 new.center_freq1 = cf0;
3432 new.center_freq2 = cf1;
3438 if (!cfg80211_chandef_valid(&new))
3445 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3446 const struct ieee80211_he_operation *he_oper,
3447 const struct ieee80211_eht_operation *eht_oper,
3448 struct cfg80211_chan_def *chandef)
3450 struct ieee80211_local *local = sdata->local;
3451 struct ieee80211_supported_band *sband;
3452 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3453 const struct ieee80211_sta_he_cap *he_cap;
3454 const struct ieee80211_sta_eht_cap *eht_cap;
3455 struct cfg80211_chan_def he_chandef = *chandef;
3456 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3457 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3458 bool support_80_80, support_160, support_320;
3459 u8 he_phy_cap, eht_phy_cap;
3462 if (chandef->chan->band != NL80211_BAND_6GHZ)
3465 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3467 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3469 sdata_info(sdata, "Missing iftype sband data/HE cap");
3473 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3476 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3479 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3483 "HE is not advertised on (on %d MHz), expect issues\n",
3484 chandef->chan->center_freq);
3488 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3490 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3494 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3496 if (!he_6ghz_oper) {
3498 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3499 chandef->chan->center_freq);
3504 * The EHT operation IE does not contain the primary channel so the
3505 * primary channel frequency should be taken from the 6 GHz operation
3508 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3510 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3512 switch (u8_get_bits(he_6ghz_oper->control,
3513 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3514 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3515 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3517 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3518 bss_conf->power_type = IEEE80211_REG_SP_AP;
3521 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3526 switch (u8_get_bits(he_6ghz_oper->control,
3527 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3528 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3529 he_chandef.width = NL80211_CHAN_WIDTH_20;
3531 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3532 he_chandef.width = NL80211_CHAN_WIDTH_40;
3534 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3535 he_chandef.width = NL80211_CHAN_WIDTH_80;
3537 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3538 he_chandef.width = NL80211_CHAN_WIDTH_80;
3539 if (!he_6ghz_oper->ccfs1)
3541 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3543 he_chandef.width = NL80211_CHAN_WIDTH_160;
3546 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3551 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3552 he_chandef.center_freq1 =
3553 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3556 he_chandef.center_freq1 =
3557 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3559 if (support_80_80 || support_160)
3560 he_chandef.center_freq2 =
3561 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3565 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3567 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3569 switch (u8_get_bits(eht_oper->chan_width,
3570 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3571 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3572 he_chandef.width = NL80211_CHAN_WIDTH_20;
3574 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3575 he_chandef.width = NL80211_CHAN_WIDTH_40;
3577 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3578 he_chandef.width = NL80211_CHAN_WIDTH_80;
3580 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3582 he_chandef.width = NL80211_CHAN_WIDTH_160;
3584 he_chandef.width = NL80211_CHAN_WIDTH_80;
3586 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3588 he_chandef.width = NL80211_CHAN_WIDTH_320;
3589 else if (support_160)
3590 he_chandef.width = NL80211_CHAN_WIDTH_160;
3592 he_chandef.width = NL80211_CHAN_WIDTH_80;
3596 he_chandef.center_freq1 =
3597 ieee80211_channel_to_frequency(eht_oper->ccfs,
3601 if (!cfg80211_chandef_valid(&he_chandef)) {
3603 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3604 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3606 he_chandef.center_freq1,
3607 he_chandef.center_freq2);
3611 *chandef = he_chandef;
3616 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3617 struct cfg80211_chan_def *chandef)
3624 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3625 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3626 chandef->width = NL80211_CHAN_WIDTH_1;
3628 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3629 chandef->width = NL80211_CHAN_WIDTH_2;
3631 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3632 chandef->width = NL80211_CHAN_WIDTH_4;
3634 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3635 chandef->width = NL80211_CHAN_WIDTH_8;
3637 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3638 chandef->width = NL80211_CHAN_WIDTH_16;
3644 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3645 NL80211_BAND_S1GHZ);
3646 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3647 chandef->freq1_offset = oper_freq % 1000;
3652 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3653 const struct ieee80211_supported_band *sband,
3654 const u8 *srates, int srates_len, u32 *rates)
3656 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3657 int shift = ieee80211_chandef_get_shift(chandef);
3658 struct ieee80211_rate *br;
3659 int brate, rate, i, j, count = 0;
3663 for (i = 0; i < srates_len; i++) {
3664 rate = srates[i] & 0x7f;
3666 for (j = 0; j < sband->n_bitrates; j++) {
3667 br = &sband->bitrates[j];
3668 if ((rate_flags & br->flags) != rate_flags)
3671 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3672 if (brate == rate) {
3682 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3683 struct sk_buff *skb, bool need_basic,
3684 enum nl80211_band band)
3686 struct ieee80211_local *local = sdata->local;
3687 struct ieee80211_supported_band *sband;
3690 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3693 shift = ieee80211_vif_get_shift(&sdata->vif);
3694 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3695 sband = local->hw.wiphy->bands[band];
3697 for (i = 0; i < sband->n_bitrates; i++) {
3698 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3705 if (skb_tailroom(skb) < rates + 2)
3708 pos = skb_put(skb, rates + 2);
3709 *pos++ = WLAN_EID_SUPP_RATES;
3711 for (i = 0; i < rates; i++) {
3713 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3716 if (need_basic && basic_rates & BIT(i))
3718 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3720 *pos++ = basic | (u8) rate;
3726 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3727 struct sk_buff *skb, bool need_basic,
3728 enum nl80211_band band)
3730 struct ieee80211_local *local = sdata->local;
3731 struct ieee80211_supported_band *sband;
3733 u8 i, exrates, *pos;
3734 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3737 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3738 shift = ieee80211_vif_get_shift(&sdata->vif);
3740 sband = local->hw.wiphy->bands[band];
3742 for (i = 0; i < sband->n_bitrates; i++) {
3743 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3753 if (skb_tailroom(skb) < exrates + 2)
3757 pos = skb_put(skb, exrates + 2);
3758 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3760 for (i = 8; i < sband->n_bitrates; i++) {
3762 if ((rate_flags & sband->bitrates[i].flags)
3765 if (need_basic && basic_rates & BIT(i))
3767 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3769 *pos++ = basic | (u8) rate;
3775 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3777 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3778 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3780 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3781 /* non-managed type inferfaces */
3784 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3786 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3788 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3793 /* TODO: consider rx_highest */
3795 if (mcs->rx_mask[3])
3797 if (mcs->rx_mask[2])
3799 if (mcs->rx_mask[1])
3805 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3806 * @local: mac80211 hw info struct
3807 * @status: RX status
3808 * @mpdu_len: total MPDU length (including FCS)
3809 * @mpdu_offset: offset into MPDU to calculate timestamp at
3811 * This function calculates the RX timestamp at the given MPDU offset, taking
3812 * into account what the RX timestamp was. An offset of 0 will just normalize
3813 * the timestamp to TSF at beginning of MPDU reception.
3815 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3816 struct ieee80211_rx_status *status,
3817 unsigned int mpdu_len,
3818 unsigned int mpdu_offset)
3820 u64 ts = status->mactime;
3821 struct rate_info ri;
3825 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3828 memset(&ri, 0, sizeof(ri));
3832 /* Fill cfg80211 rate info */
3833 switch (status->encoding) {
3835 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3836 ri.mcs = status->rate_idx;
3837 ri.nss = status->nss;
3838 ri.he_ru_alloc = status->he_ru;
3839 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3840 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3843 * See P802.11ax_D6.0, section 27.3.4 for
3846 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3852 * For HE MU PPDU, add the HE-SIG-B.
3853 * For HE ER PPDU, add 8us for the HE-SIG-A.
3854 * For HE TB PPDU, add 4us for the HE-STF.
3855 * Add the HE-LTF durations - variable.
3861 ri.mcs = status->rate_idx;
3862 ri.flags |= RATE_INFO_FLAGS_MCS;
3863 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3864 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3867 * See P802.11REVmd_D3.0, section 19.3.2 for
3870 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3872 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3878 * Add Data HT-LTFs per streams
3879 * TODO: add Extension HT-LTFs, 4us per LTF
3881 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3882 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3888 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3889 ri.mcs = status->rate_idx;
3890 ri.nss = status->nss;
3891 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3892 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3895 * See P802.11REVmd_D3.0, section 21.3.2 for
3898 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3903 * Add VHT-LTFs per streams
3905 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3906 ri.nss + 1 : ri.nss;
3914 case RX_ENC_LEGACY: {
3915 struct ieee80211_supported_band *sband;
3919 switch (status->bw) {
3920 case RATE_INFO_BW_10:
3923 case RATE_INFO_BW_5:
3928 sband = local->hw.wiphy->bands[status->band];
3929 bitrate = sband->bitrates[status->rate_idx].bitrate;
3930 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3932 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3933 if (status->band == NL80211_BAND_5GHZ) {
3936 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3946 rate = cfg80211_calculate_bitrate(&ri);
3947 if (WARN_ONCE(!rate,
3948 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3949 (unsigned long long)status->flag, status->rate_idx,
3953 /* rewind from end of MPDU */
3954 if (status->flag & RX_FLAG_MACTIME_END)
3955 ts -= mpdu_len * 8 * 10 / rate;
3957 ts += mpdu_offset * 8 * 10 / rate;
3962 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3964 struct ieee80211_sub_if_data *sdata;
3965 struct cfg80211_chan_def chandef;
3967 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3968 lockdep_assert_wiphy(local->hw.wiphy);
3970 mutex_lock(&local->mtx);
3971 list_for_each_entry(sdata, &local->interfaces, list) {
3972 /* it might be waiting for the local->mtx, but then
3973 * by the time it gets it, sdata->wdev.cac_started
3974 * will no longer be true
3976 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3978 if (sdata->wdev.cac_started) {
3979 chandef = sdata->vif.bss_conf.chandef;
3980 ieee80211_vif_release_channel(sdata);
3981 cfg80211_cac_event(sdata->dev,
3983 NL80211_RADAR_CAC_ABORTED,
3987 mutex_unlock(&local->mtx);
3990 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3992 struct ieee80211_local *local =
3993 container_of(work, struct ieee80211_local, radar_detected_work);
3994 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3995 struct ieee80211_chanctx *ctx;
3996 int num_chanctx = 0;
3998 mutex_lock(&local->chanctx_mtx);
3999 list_for_each_entry(ctx, &local->chanctx_list, list) {
4000 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4004 chandef = ctx->conf.def;
4006 mutex_unlock(&local->chanctx_mtx);
4008 wiphy_lock(local->hw.wiphy);
4009 ieee80211_dfs_cac_cancel(local);
4010 wiphy_unlock(local->hw.wiphy);
4012 if (num_chanctx > 1)
4013 /* XXX: multi-channel is not supported yet */
4016 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4019 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4021 struct ieee80211_local *local = hw_to_local(hw);
4023 trace_api_radar_detected(local);
4025 schedule_work(&local->radar_detected_work);
4027 EXPORT_SYMBOL(ieee80211_radar_detected);
4029 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4035 case NL80211_CHAN_WIDTH_20:
4036 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4037 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4039 case NL80211_CHAN_WIDTH_40:
4040 c->width = NL80211_CHAN_WIDTH_20;
4041 c->center_freq1 = c->chan->center_freq;
4042 ret = IEEE80211_STA_DISABLE_40MHZ |
4043 IEEE80211_STA_DISABLE_VHT;
4045 case NL80211_CHAN_WIDTH_80:
4046 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4050 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4051 c->width = NL80211_CHAN_WIDTH_40;
4052 ret = IEEE80211_STA_DISABLE_VHT;
4054 case NL80211_CHAN_WIDTH_80P80:
4055 c->center_freq2 = 0;
4056 c->width = NL80211_CHAN_WIDTH_80;
4057 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4058 IEEE80211_STA_DISABLE_160MHZ;
4060 case NL80211_CHAN_WIDTH_160:
4062 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4065 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4066 c->width = NL80211_CHAN_WIDTH_80;
4067 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4068 IEEE80211_STA_DISABLE_160MHZ;
4070 case NL80211_CHAN_WIDTH_320:
4072 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4075 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4076 c->width = NL80211_CHAN_WIDTH_160;
4077 ret = IEEE80211_STA_DISABLE_320MHZ;
4080 case NL80211_CHAN_WIDTH_20_NOHT:
4082 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4083 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4085 case NL80211_CHAN_WIDTH_1:
4086 case NL80211_CHAN_WIDTH_2:
4087 case NL80211_CHAN_WIDTH_4:
4088 case NL80211_CHAN_WIDTH_8:
4089 case NL80211_CHAN_WIDTH_16:
4090 case NL80211_CHAN_WIDTH_5:
4091 case NL80211_CHAN_WIDTH_10:
4094 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4098 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4104 * Returns true if smps_mode_new is strictly more restrictive than
4107 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4108 enum ieee80211_smps_mode smps_mode_new)
4110 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4111 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4114 switch (smps_mode_old) {
4115 case IEEE80211_SMPS_STATIC:
4117 case IEEE80211_SMPS_DYNAMIC:
4118 return smps_mode_new == IEEE80211_SMPS_STATIC;
4119 case IEEE80211_SMPS_OFF:
4120 return smps_mode_new != IEEE80211_SMPS_OFF;
4128 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4129 struct cfg80211_csa_settings *csa_settings)
4131 struct sk_buff *skb;
4132 struct ieee80211_mgmt *mgmt;
4133 struct ieee80211_local *local = sdata->local;
4135 int hdr_len = offsetofend(struct ieee80211_mgmt,
4136 u.action.u.chan_switch);
4139 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4140 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4143 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4144 5 + /* channel switch announcement element */
4145 3 + /* secondary channel offset element */
4146 5 + /* wide bandwidth channel switch announcement */
4147 8); /* mesh channel switch parameters element */
4151 skb_reserve(skb, local->tx_headroom);
4152 mgmt = skb_put_zero(skb, hdr_len);
4153 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4154 IEEE80211_STYPE_ACTION);
4156 eth_broadcast_addr(mgmt->da);
4157 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4158 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4159 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4161 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4162 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4164 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4165 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4166 pos = skb_put(skb, 5);
4167 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4168 *pos++ = 3; /* IE length */
4169 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4170 freq = csa_settings->chandef.chan->center_freq;
4171 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4172 *pos++ = csa_settings->count; /* count */
4174 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4175 enum nl80211_channel_type ch_type;
4178 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4179 *pos++ = 1; /* IE length */
4180 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4181 if (ch_type == NL80211_CHAN_HT40PLUS)
4182 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4184 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4187 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4188 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4191 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4192 *pos++ = 6; /* IE length */
4193 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4194 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4195 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4196 *pos++ |= csa_settings->block_tx ?
4197 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4198 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4200 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4204 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4205 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4206 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4208 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4211 ieee80211_tx_skb(sdata, skb);
4215 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4217 return !(cs == NULL || cs->cipher == 0 ||
4218 cs->hdr_len < cs->pn_len + cs->pn_off ||
4219 cs->hdr_len <= cs->key_idx_off ||
4220 cs->key_idx_shift > 7 ||
4221 cs->key_idx_mask == 0);
4224 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4228 /* Ensure we have enough iftype bitmap space for all iftype values */
4229 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4231 for (i = 0; i < n; i++)
4232 if (!ieee80211_cs_valid(&cs[i]))
4238 const struct ieee80211_cipher_scheme *
4239 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4240 enum nl80211_iftype iftype)
4242 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4243 int n = local->hw.n_cipher_schemes;
4245 const struct ieee80211_cipher_scheme *cs = NULL;
4247 for (i = 0; i < n; i++) {
4248 if (l[i].cipher == cipher) {
4254 if (!cs || !(cs->iftype & BIT(iftype)))
4260 int ieee80211_cs_headroom(struct ieee80211_local *local,
4261 struct cfg80211_crypto_settings *crypto,
4262 enum nl80211_iftype iftype)
4264 const struct ieee80211_cipher_scheme *cs;
4265 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4268 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4269 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4272 if (cs && headroom < cs->hdr_len)
4273 headroom = cs->hdr_len;
4276 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4277 if (cs && headroom < cs->hdr_len)
4278 headroom = cs->hdr_len;
4284 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4286 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4293 if (data->count[i] == 1)
4296 if (data->desc[i].interval == 0)
4299 /* End time is in the past, check for repetitions */
4300 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4301 if (data->count[i] < 255) {
4302 if (data->count[i] <= skip) {
4307 data->count[i] -= skip;
4310 data->desc[i].start += skip * data->desc[i].interval;
4316 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4322 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4325 if (!data->count[i])
4328 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4331 cur = data->desc[i].start - tsf;
4335 cur = data->desc[i].start + data->desc[i].duration - tsf;
4344 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4349 * arbitrary limit, used to avoid infinite loops when combined NoA
4350 * descriptors cover the full time period.
4354 ieee80211_extend_absent_time(data, tsf, &offset);
4356 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4360 } while (tries < max_tries);
4365 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4367 u32 next_offset = BIT(31) - 1;
4371 data->has_next_tsf = false;
4372 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4375 if (!data->count[i])
4378 ieee80211_extend_noa_desc(data, tsf, i);
4379 start = data->desc[i].start - tsf;
4381 data->absent |= BIT(i);
4383 if (next_offset > start)
4384 next_offset = start;
4386 data->has_next_tsf = true;
4390 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4392 data->next_tsf = tsf + next_offset;
4394 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4396 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4397 struct ieee80211_noa_data *data, u32 tsf)
4402 memset(data, 0, sizeof(*data));
4404 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4405 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4407 if (!desc->count || !desc->duration)
4410 data->count[i] = desc->count;
4411 data->desc[i].start = le32_to_cpu(desc->start_time);
4412 data->desc[i].duration = le32_to_cpu(desc->duration);
4413 data->desc[i].interval = le32_to_cpu(desc->interval);
4415 if (data->count[i] > 1 &&
4416 data->desc[i].interval < data->desc[i].duration)
4419 ieee80211_extend_noa_desc(data, tsf, i);
4424 ieee80211_update_p2p_noa(data, tsf);
4428 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4430 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4431 struct ieee80211_sub_if_data *sdata)
4433 u64 tsf = drv_get_tsf(local, sdata);
4435 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4436 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4440 if (tsf == -1ULL || !beacon_int || !dtim_period)
4443 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4444 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4448 ps = &sdata->bss->ps;
4449 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4450 ps = &sdata->u.mesh.ps;
4456 * actually finds last dtim_count, mac80211 will update in
4457 * __beacon_add_tim().
4458 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4460 do_div(tsf, beacon_int);
4461 bcns_from_dtim = do_div(tsf, dtim_period);
4462 /* just had a DTIM */
4463 if (!bcns_from_dtim)
4466 dtim_count = dtim_period - bcns_from_dtim;
4468 ps->dtim_count = dtim_count;
4471 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4472 struct ieee80211_chanctx *ctx)
4474 struct ieee80211_sub_if_data *sdata;
4475 u8 radar_detect = 0;
4477 lockdep_assert_held(&local->chanctx_mtx);
4479 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4482 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4483 if (sdata->reserved_radar_required)
4484 radar_detect |= BIT(sdata->reserved_chandef.width);
4487 * An in-place reservation context should not have any assigned vifs
4488 * until it replaces the other context.
4490 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4491 !list_empty(&ctx->assigned_vifs));
4493 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4494 if (sdata->radar_required)
4495 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4497 return radar_detect;
4500 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4501 const struct cfg80211_chan_def *chandef,
4502 enum ieee80211_chanctx_mode chanmode,
4505 struct ieee80211_local *local = sdata->local;
4506 struct ieee80211_sub_if_data *sdata_iter;
4507 enum nl80211_iftype iftype = sdata->wdev.iftype;
4508 struct ieee80211_chanctx *ctx;
4510 struct iface_combination_params params = {
4511 .radar_detect = radar_detect,
4514 lockdep_assert_held(&local->chanctx_mtx);
4516 if (WARN_ON(hweight32(radar_detect) > 1))
4519 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4523 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4526 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4527 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4529 * always passing this is harmless, since it'll be the
4530 * same value that cfg80211 finds if it finds the same
4531 * interface ... and that's always allowed
4533 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4536 /* Always allow software iftypes */
4537 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4544 params.num_different_channels = 1;
4546 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4547 params.iftype_num[iftype] = 1;
4549 list_for_each_entry(ctx, &local->chanctx_list, list) {
4550 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4552 params.radar_detect |=
4553 ieee80211_chanctx_radar_detect(local, ctx);
4554 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4555 params.num_different_channels++;
4558 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4559 cfg80211_chandef_compatible(chandef,
4562 params.num_different_channels++;
4565 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4566 struct wireless_dev *wdev_iter;
4568 wdev_iter = &sdata_iter->wdev;
4570 if (sdata_iter == sdata ||
4571 !ieee80211_sdata_running(sdata_iter) ||
4572 cfg80211_iftype_allowed(local->hw.wiphy,
4573 wdev_iter->iftype, 0, 1))
4576 params.iftype_num[wdev_iter->iftype]++;
4580 if (total == 1 && !params.radar_detect)
4583 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4587 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4590 u32 *max_num_different_channels = data;
4592 *max_num_different_channels = max(*max_num_different_channels,
4593 c->num_different_channels);
4596 int ieee80211_max_num_channels(struct ieee80211_local *local)
4598 struct ieee80211_sub_if_data *sdata;
4599 struct ieee80211_chanctx *ctx;
4600 u32 max_num_different_channels = 1;
4602 struct iface_combination_params params = {0};
4604 lockdep_assert_held(&local->chanctx_mtx);
4606 list_for_each_entry(ctx, &local->chanctx_list, list) {
4607 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4610 params.num_different_channels++;
4612 params.radar_detect |=
4613 ieee80211_chanctx_radar_detect(local, ctx);
4616 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4617 params.iftype_num[sdata->wdev.iftype]++;
4619 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4620 ieee80211_iter_max_chans,
4621 &max_num_different_channels);
4625 return max_num_different_channels;
4628 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4629 struct ieee80211_sta_s1g_cap *caps,
4630 struct sk_buff *skb)
4632 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4633 struct ieee80211_s1g_cap s1g_capab;
4637 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4643 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4644 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4646 /* override the capability info */
4647 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4648 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4650 s1g_capab.capab_info[i] &= ~mask;
4651 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4654 /* then MCS and NSS set */
4655 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4656 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4658 s1g_capab.supp_mcs_nss[i] &= ~mask;
4659 s1g_capab.supp_mcs_nss[i] |=
4660 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4663 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4664 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4665 *pos++ = sizeof(s1g_capab);
4667 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4670 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4671 struct sk_buff *skb)
4673 u8 *pos = skb_put(skb, 3);
4675 *pos++ = WLAN_EID_AID_REQUEST;
4680 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4682 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4683 *buf++ = 7; /* len */
4684 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4687 *buf++ = 2; /* WME */
4688 *buf++ = 0; /* WME info */
4689 *buf++ = 1; /* WME ver */
4690 *buf++ = qosinfo; /* U-APSD no in use */
4695 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4696 unsigned long *frame_cnt,
4697 unsigned long *byte_cnt)
4699 struct txq_info *txqi = to_txq_info(txq);
4700 u32 frag_cnt = 0, frag_bytes = 0;
4701 struct sk_buff *skb;
4703 skb_queue_walk(&txqi->frags, skb) {
4705 frag_bytes += skb->len;
4709 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4712 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4714 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4716 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4717 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4718 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4719 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4720 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4723 u16 ieee80211_encode_usf(int listen_interval)
4725 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4728 /* find greatest USF */
4729 while (usf < IEEE80211_MAX_USF) {
4730 if (listen_interval % listen_int_usf[usf + 1])
4734 ui = listen_interval / listen_int_usf[usf];
4736 /* error if there is a remainder. Should've been checked by user */
4737 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4738 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4739 FIELD_PREP(LISTEN_INT_UI, ui);
4741 return (u16) listen_interval;
4744 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4746 const struct ieee80211_sta_he_cap *he_cap;
4747 const struct ieee80211_sta_eht_cap *eht_cap;
4748 struct ieee80211_supported_band *sband;
4751 sband = ieee80211_get_sband(sdata);
4755 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4756 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4757 if (!he_cap || !eht_cap)
4760 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4761 &eht_cap->eht_cap_elem);
4763 sizeof(he_cap->he_cap_elem) + n +
4764 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4765 eht_cap->eht_cap_elem.phy_cap_info);
4769 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4770 const struct ieee80211_sta_he_cap *he_cap,
4771 const struct ieee80211_sta_eht_cap *eht_cap,
4774 u8 mcs_nss_len, ppet_len;
4778 /* Make sure we have place for the IE */
4779 if (!he_cap || !eht_cap)
4782 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4783 &eht_cap->eht_cap_elem);
4784 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4785 eht_cap->eht_cap_elem.phy_cap_info);
4787 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4788 if ((end - pos) < ie_len)
4791 *pos++ = WLAN_EID_EXTENSION;
4792 *pos++ = ie_len - 2;
4793 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4796 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4797 pos += sizeof(eht_cap->eht_cap_elem);
4799 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4803 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);