1 // SPDX-License-Identifier: GPL-2.0-only
3 * BSS client mode implementation
4 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
5 * Copyright 2004, Instant802 Networks, Inc.
6 * Copyright 2005, Devicescape Software, Inc.
7 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
8 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * Copyright 2013-2014 Intel Mobile Communications GmbH
10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
11 * Copyright (C) 2018 - 2021 Intel Corporation
14 #include <linux/delay.h>
15 #include <linux/fips.h>
16 #include <linux/if_ether.h>
17 #include <linux/skbuff.h>
18 #include <linux/if_arp.h>
19 #include <linux/etherdevice.h>
20 #include <linux/moduleparam.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/crc32.h>
23 #include <linux/slab.h>
24 #include <linux/export.h>
25 #include <net/mac80211.h>
26 #include <asm/unaligned.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
32 #include "fils_aead.h"
34 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
35 #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
36 #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
37 #define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
38 #define IEEE80211_AUTH_MAX_TRIES 3
39 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
40 #define IEEE80211_AUTH_WAIT_SAE_RETRY (HZ * 2)
41 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
42 #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
43 #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
44 #define IEEE80211_ASSOC_MAX_TRIES 3
46 static int max_nullfunc_tries = 2;
47 module_param(max_nullfunc_tries, int, 0644);
48 MODULE_PARM_DESC(max_nullfunc_tries,
49 "Maximum nullfunc tx tries before disconnecting (reason 4).");
51 static int max_probe_tries = 5;
52 module_param(max_probe_tries, int, 0644);
53 MODULE_PARM_DESC(max_probe_tries,
54 "Maximum probe tries before disconnecting (reason 4).");
57 * Beacon loss timeout is calculated as N frames times the
58 * advertised beacon interval. This may need to be somewhat
59 * higher than what hardware might detect to account for
60 * delays in the host processing frames. But since we also
61 * probe on beacon miss before declaring the connection lost
62 * default to what we want.
64 static int beacon_loss_count = 7;
65 module_param(beacon_loss_count, int, 0644);
66 MODULE_PARM_DESC(beacon_loss_count,
67 "Number of beacon intervals before we decide beacon was lost.");
70 * Time the connection can be idle before we probe
71 * it to see if we can still talk to the AP.
73 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
75 * Time we wait for a probe response after sending
76 * a probe request because of beacon loss or for
77 * checking the connection still works.
79 static int probe_wait_ms = 500;
80 module_param(probe_wait_ms, int, 0644);
81 MODULE_PARM_DESC(probe_wait_ms,
82 "Maximum time(ms) to wait for probe response"
83 " before disconnecting (reason 4).");
86 * How many Beacon frames need to have been used in average signal strength
87 * before starting to indicate signal change events.
89 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
92 * We can have multiple work items (and connection probing)
93 * scheduling this timer, but we need to take care to only
94 * reschedule it when it should fire _earlier_ than it was
95 * asked for before, or if it's not pending right now. This
96 * function ensures that. Note that it then is required to
97 * run this function for all timeouts after the first one
98 * has happened -- the work that runs from this timer will
101 static void run_again(struct ieee80211_sub_if_data *sdata,
102 unsigned long timeout)
104 sdata_assert_lock(sdata);
106 if (!timer_pending(&sdata->u.mgd.timer) ||
107 time_before(timeout, sdata->u.mgd.timer.expires))
108 mod_timer(&sdata->u.mgd.timer, timeout);
111 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
113 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
116 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
119 mod_timer(&sdata->u.mgd.bcn_mon_timer,
120 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
123 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
125 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
127 if (unlikely(!ifmgd->associated))
130 if (ifmgd->probe_send_count)
131 ifmgd->probe_send_count = 0;
133 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
136 mod_timer(&ifmgd->conn_mon_timer,
137 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
140 static int ecw2cw(int ecw)
142 return (1 << ecw) - 1;
146 ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
147 struct ieee80211_supported_band *sband,
148 struct ieee80211_channel *channel,
150 const struct ieee80211_ht_operation *ht_oper,
151 const struct ieee80211_vht_operation *vht_oper,
152 const struct ieee80211_he_operation *he_oper,
153 const struct ieee80211_s1g_oper_ie *s1g_oper,
154 struct cfg80211_chan_def *chandef, bool tracking)
156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
157 struct cfg80211_chan_def vht_chandef;
158 struct ieee80211_sta_ht_cap sta_ht_cap;
161 memset(chandef, 0, sizeof(struct cfg80211_chan_def));
162 chandef->chan = channel;
163 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
164 chandef->center_freq1 = channel->center_freq;
165 chandef->freq1_offset = channel->freq_offset;
167 if (channel->band == NL80211_BAND_6GHZ) {
168 if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef))
169 ret = IEEE80211_STA_DISABLE_HT |
170 IEEE80211_STA_DISABLE_VHT |
171 IEEE80211_STA_DISABLE_HE;
174 vht_chandef = *chandef;
176 } else if (sband->band == NL80211_BAND_S1GHZ) {
177 if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
179 "Missing S1G Operation Element? Trying operating == primary\n");
180 chandef->width = ieee80211_s1g_channel_width(channel);
183 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_40MHZ |
184 IEEE80211_STA_DISABLE_VHT |
185 IEEE80211_STA_DISABLE_80P80MHZ |
186 IEEE80211_STA_DISABLE_160MHZ;
190 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
191 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
193 if (!ht_oper || !sta_ht_cap.ht_supported) {
194 ret = IEEE80211_STA_DISABLE_HT |
195 IEEE80211_STA_DISABLE_VHT |
196 IEEE80211_STA_DISABLE_HE;
200 chandef->width = NL80211_CHAN_WIDTH_20;
202 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
204 /* check that channel matches the right operating channel */
205 if (!tracking && channel->center_freq != ht_cfreq) {
207 * It's possible that some APs are confused here;
208 * Netgear WNDR3700 sometimes reports 4 higher than
209 * the actual channel in association responses, but
210 * since we look at probe response/beacon data here
214 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
215 channel->center_freq, ht_cfreq,
216 ht_oper->primary_chan, channel->band);
217 ret = IEEE80211_STA_DISABLE_HT |
218 IEEE80211_STA_DISABLE_VHT |
219 IEEE80211_STA_DISABLE_HE;
223 /* check 40 MHz support, if we have it */
224 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
225 ieee80211_chandef_ht_oper(ht_oper, chandef);
227 /* 40 MHz (and 80 MHz) must be supported for VHT */
228 ret = IEEE80211_STA_DISABLE_VHT;
229 /* also mark 40 MHz disabled */
230 ret |= IEEE80211_STA_DISABLE_40MHZ;
234 if (!vht_oper || !sband->vht_cap.vht_supported) {
235 ret = IEEE80211_STA_DISABLE_VHT;
239 vht_chandef = *chandef;
240 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
241 (le32_to_cpu(he_oper->he_oper_params) &
242 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
243 struct ieee80211_vht_operation he_oper_vht_cap;
246 * Set only first 3 bytes (other 2 aren't used in
247 * ieee80211_chandef_vht_oper() anyway)
249 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
250 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
252 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
253 &he_oper_vht_cap, ht_oper,
255 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
257 "HE AP VHT information is invalid, disable HE\n");
258 ret = IEEE80211_STA_DISABLE_HE;
261 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
265 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
267 "AP VHT information is invalid, disable VHT\n");
268 ret = IEEE80211_STA_DISABLE_VHT;
272 if (!cfg80211_chandef_valid(&vht_chandef)) {
273 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
275 "AP VHT information is invalid, disable VHT\n");
276 ret = IEEE80211_STA_DISABLE_VHT;
280 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
285 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
286 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
288 "AP VHT information doesn't match HT, disable VHT\n");
289 ret = IEEE80211_STA_DISABLE_VHT;
293 *chandef = vht_chandef;
299 * When tracking the current AP, don't do any further checks if the
300 * new chandef is identical to the one we're currently using for the
301 * connection. This keeps us from playing ping-pong with regulatory,
302 * without it the following can happen (for example):
303 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
304 * - AP advertises regdom US
305 * - CRDA loads regdom US with 80 MHz prohibited (old database)
306 * - the code below detects an unsupported channel, downgrades, and
307 * we disconnect from the AP in the caller
308 * - disconnect causes CRDA to reload world regdomain and the game
310 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
312 * It seems possible that there are still scenarios with CSA or real
313 * bandwidth changes where a this could happen, but those cases are
314 * less common and wouldn't completely prevent using the AP.
317 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
320 /* don't print the message below for VHT mismatch if VHT is disabled */
321 if (ret & IEEE80211_STA_DISABLE_VHT)
322 vht_chandef = *chandef;
325 * Ignore the DISABLED flag when we're already connected and only
326 * tracking the APs beacon for bandwidth changes - otherwise we
327 * might get disconnected here if we connect to an AP, update our
328 * regulatory information based on the AP's country IE and the
329 * information we have is wrong/outdated and disables the channel
330 * that we're actually using for the connection to the AP.
332 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
334 IEEE80211_CHAN_DISABLED)) {
335 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
336 ret = IEEE80211_STA_DISABLE_HT |
337 IEEE80211_STA_DISABLE_VHT |
338 IEEE80211_STA_DISABLE_HE;
342 ret |= ieee80211_chandef_downgrade(chandef);
345 if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
346 IEEE80211_CHAN_NO_HE))
347 ret |= IEEE80211_STA_DISABLE_HE;
349 if (chandef->width != vht_chandef.width && !tracking)
351 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
353 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
357 static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
358 struct sta_info *sta,
359 const struct ieee80211_ht_cap *ht_cap,
360 const struct ieee80211_vht_cap *vht_cap,
361 const struct ieee80211_ht_operation *ht_oper,
362 const struct ieee80211_vht_operation *vht_oper,
363 const struct ieee80211_he_operation *he_oper,
364 const struct ieee80211_s1g_oper_ie *s1g_oper,
365 const u8 *bssid, u32 *changed)
367 struct ieee80211_local *local = sdata->local;
368 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
369 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
370 struct ieee80211_supported_band *sband =
371 local->hw.wiphy->bands[chan->band];
372 struct cfg80211_chan_def chandef;
375 u32 vht_cap_info = 0;
378 /* if HT was/is disabled, don't track any bandwidth changes */
379 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
382 /* don't check VHT if we associated as non-VHT station */
383 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
386 /* don't check HE if we associated as non-HE station */
387 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
388 !ieee80211_get_he_iftype_cap(sband,
389 ieee80211_vif_type_p2p(&sdata->vif)))
393 if (WARN_ON_ONCE(!sta))
397 * if bss configuration changed store the new one -
398 * this may be applicable even if channel is identical
400 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
401 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
402 *changed |= BSS_CHANGED_HT;
403 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
407 vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
409 /* calculate new channel (type) based on HT/VHT/HE operation IEs */
410 flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
411 ht_oper, vht_oper, he_oper,
412 s1g_oper, &chandef, true);
415 * Downgrade the new channel if we associated with restricted
416 * capabilities. For example, if we associated as a 20 MHz STA
417 * to a 40 MHz AP (due to regulatory, capabilities or config
418 * reasons) then switching to a 40 MHz channel now won't do us
419 * any good -- we couldn't use it with the AP.
421 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
422 chandef.width == NL80211_CHAN_WIDTH_80P80)
423 flags |= ieee80211_chandef_downgrade(&chandef);
424 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
425 chandef.width == NL80211_CHAN_WIDTH_160)
426 flags |= ieee80211_chandef_downgrade(&chandef);
427 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
428 chandef.width > NL80211_CHAN_WIDTH_20)
429 flags |= ieee80211_chandef_downgrade(&chandef);
431 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
435 "AP %pM changed bandwidth, new config is %d.%03d MHz, "
436 "width %d (%d.%03d/%d MHz)\n",
437 ifmgd->bssid, chandef.chan->center_freq,
438 chandef.chan->freq_offset, chandef.width,
439 chandef.center_freq1, chandef.freq1_offset,
440 chandef.center_freq2);
442 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
443 IEEE80211_STA_DISABLE_VHT |
444 IEEE80211_STA_DISABLE_HE |
445 IEEE80211_STA_DISABLE_40MHZ |
446 IEEE80211_STA_DISABLE_80P80MHZ |
447 IEEE80211_STA_DISABLE_160MHZ)) ||
448 !cfg80211_chandef_valid(&chandef)) {
450 "AP %pM changed caps/bw in a way we can't support (0x%x/0x%x) - disconnect\n",
451 ifmgd->bssid, flags, ifmgd->flags);
455 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
459 "AP %pM changed bandwidth to incompatible one - disconnect\n",
467 /* frame sending functions */
469 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
470 struct sk_buff *skb, u8 ap_ht_param,
471 struct ieee80211_supported_band *sband,
472 struct ieee80211_channel *channel,
473 enum ieee80211_smps_mode smps)
476 u32 flags = channel->flags;
478 struct ieee80211_sta_ht_cap ht_cap;
480 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
482 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
483 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
485 /* determine capability flags */
488 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
489 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
490 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
491 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
492 cap &= ~IEEE80211_HT_CAP_SGI_40;
495 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
496 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
497 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
498 cap &= ~IEEE80211_HT_CAP_SGI_40;
504 * If 40 MHz was disabled associate as though we weren't
505 * capable of 40 MHz -- some broken APs will never fall
506 * back to trying to transmit in 20 MHz.
508 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
509 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
510 cap &= ~IEEE80211_HT_CAP_SGI_40;
513 /* set SM PS mode properly */
514 cap &= ~IEEE80211_HT_CAP_SM_PS;
516 case IEEE80211_SMPS_AUTOMATIC:
517 case IEEE80211_SMPS_NUM_MODES:
520 case IEEE80211_SMPS_OFF:
521 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
522 IEEE80211_HT_CAP_SM_PS_SHIFT;
524 case IEEE80211_SMPS_STATIC:
525 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
526 IEEE80211_HT_CAP_SM_PS_SHIFT;
528 case IEEE80211_SMPS_DYNAMIC:
529 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
530 IEEE80211_HT_CAP_SM_PS_SHIFT;
534 /* reserve and fill IE */
535 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
536 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
539 /* This function determines vht capability flags for the association
541 * Note - the function may set the owner of the MU-MIMO capability
543 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
545 struct ieee80211_supported_band *sband,
546 struct ieee80211_vht_cap *ap_vht_cap)
548 struct ieee80211_local *local = sdata->local;
551 struct ieee80211_sta_vht_cap vht_cap;
552 u32 mask, ap_bf_sts, our_bf_sts;
554 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
556 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
557 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
559 /* determine capability flags */
562 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
563 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
565 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
566 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
567 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
568 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
571 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
572 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
573 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
577 * Some APs apparently get confused if our capabilities are better
578 * than theirs, so restrict what we advertise in the assoc request.
580 if (!(ap_vht_cap->vht_cap_info &
581 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
582 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
583 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
584 else if (!(ap_vht_cap->vht_cap_info &
585 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
586 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
589 * If some other vif is using the MU-MIMO capability we cannot associate
590 * using MU-MIMO - this will lead to contradictions in the group-id
592 * Ownership is defined since association request, in order to avoid
593 * simultaneous associations with MU-MIMO.
595 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
596 bool disable_mu_mimo = false;
597 struct ieee80211_sub_if_data *other;
599 list_for_each_entry_rcu(other, &local->interfaces, list) {
600 if (other->vif.mu_mimo_owner) {
601 disable_mu_mimo = true;
606 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
608 sdata->vif.mu_mimo_owner = true;
611 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
613 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
614 our_bf_sts = cap & mask;
616 if (ap_bf_sts < our_bf_sts) {
621 /* reserve and fill IE */
622 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
623 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
626 /* This function determines HE capability flags for the association
629 static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
631 struct ieee80211_supported_band *sband)
633 u8 *pos, *pre_he_pos;
634 const struct ieee80211_sta_he_cap *he_cap = NULL;
635 struct ieee80211_chanctx_conf *chanctx_conf;
637 bool reg_cap = false;
640 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
641 if (!WARN_ON_ONCE(!chanctx_conf))
642 reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
644 IEEE80211_CHAN_NO_HE);
648 he_cap = ieee80211_get_he_iftype_cap(sband,
649 ieee80211_vif_type_p2p(&sdata->vif));
650 if (!he_cap || !chanctx_conf || !reg_cap)
653 /* get a max size estimate */
655 2 + 1 + sizeof(he_cap->he_cap_elem) +
656 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
657 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
658 he_cap->he_cap_elem.phy_cap_info);
659 pos = skb_put(skb, he_cap_size);
661 pos = ieee80211_ie_build_he_cap(sdata->u.mgd.flags,
662 pos, he_cap, pos + he_cap_size);
663 /* trim excess if any */
664 skb_trim(skb, skb->len - (pre_he_pos + he_cap_size - pos));
666 ieee80211_ie_build_he_6ghz_cap(sdata, skb);
669 static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
671 struct ieee80211_local *local = sdata->local;
672 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
673 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
675 struct ieee80211_mgmt *mgmt;
676 u8 *pos, qos_info, *ie_start;
677 size_t offset = 0, noffset;
678 int i, count, rates_len, supp_rates_len, shift;
680 struct ieee80211_supported_band *sband;
681 struct ieee80211_chanctx_conf *chanctx_conf;
682 struct ieee80211_channel *chan;
685 struct element *ext_capa = NULL;
686 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
687 const struct ieee80211_sband_iftype_data *iftd;
688 struct ieee80211_prep_tx_info info = {};
691 /* we know it's writable, cast away the const */
692 if (assoc_data->ie_len)
693 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
697 sdata_assert_lock(sdata);
700 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
701 if (WARN_ON(!chanctx_conf)) {
705 chan = chanctx_conf->def.chan;
707 sband = local->hw.wiphy->bands[chan->band];
708 shift = ieee80211_vif_get_shift(&sdata->vif);
710 if (assoc_data->supp_rates_len) {
712 * Get all rates supported by the device and the AP as
713 * some APs don't like getting a superset of their rates
714 * in the association request (e.g. D-Link DAP 1353 in
717 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
718 assoc_data->supp_rates,
719 assoc_data->supp_rates_len,
723 * In case AP not provide any supported rates information
724 * before association, we send information element(s) with
725 * all rates that we support.
728 for (i = 0; i < sband->n_bitrates; i++) {
734 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
736 skb = alloc_skb(local->hw.extra_tx_headroom +
737 sizeof(*mgmt) + /* bit too much but doesn't matter */
738 2 + assoc_data->ssid_len + /* SSID */
739 4 + rates_len + /* (extended) rates */
740 4 + /* power capability */
741 2 + 2 * sband->n_channels + /* supported channels */
742 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
743 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
744 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */
745 sizeof(struct ieee80211_he_mcs_nss_supp) +
746 IEEE80211_HE_PPE_THRES_MAX_LEN +
747 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
748 assoc_data->ie_len + /* extra IEs */
749 (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
751 (iftd ? iftd->vendor_elems.len : 0),
756 skb_reserve(skb, local->hw.extra_tx_headroom);
758 capab = WLAN_CAPABILITY_ESS;
760 if (sband->band == NL80211_BAND_2GHZ) {
761 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
762 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
765 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
766 capab |= WLAN_CAPABILITY_PRIVACY;
768 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
769 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
770 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
772 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
773 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
775 mgmt = skb_put_zero(skb, 24);
776 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
777 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
778 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
780 listen_int = cpu_to_le16(sband->band == NL80211_BAND_S1GHZ ?
781 ieee80211_encode_usf(local->hw.conf.listen_interval) :
782 local->hw.conf.listen_interval);
783 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
785 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
786 IEEE80211_STYPE_REASSOC_REQ);
787 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
788 mgmt->u.reassoc_req.listen_interval = listen_int;
789 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
791 info.subtype = IEEE80211_STYPE_REASSOC_REQ;
794 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
795 IEEE80211_STYPE_ASSOC_REQ);
796 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
797 mgmt->u.assoc_req.listen_interval = listen_int;
798 info.subtype = IEEE80211_STYPE_ASSOC_REQ;
802 pos = skb_put(skb, 2 + assoc_data->ssid_len);
804 *pos++ = WLAN_EID_SSID;
805 *pos++ = assoc_data->ssid_len;
806 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
808 if (sband->band == NL80211_BAND_S1GHZ)
811 /* add all rates which were marked to be used above */
812 supp_rates_len = rates_len;
813 if (supp_rates_len > 8)
816 pos = skb_put(skb, supp_rates_len + 2);
817 *pos++ = WLAN_EID_SUPP_RATES;
818 *pos++ = supp_rates_len;
821 for (i = 0; i < sband->n_bitrates; i++) {
822 if (BIT(i) & rates) {
823 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
831 if (rates_len > count) {
832 pos = skb_put(skb, rates_len - count + 2);
833 *pos++ = WLAN_EID_EXT_SUPP_RATES;
834 *pos++ = rates_len - count;
836 for (i++; i < sband->n_bitrates; i++) {
837 if (BIT(i) & rates) {
839 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
847 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
848 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
849 pos = skb_put(skb, 4);
850 *pos++ = WLAN_EID_PWR_CAPABILITY;
852 *pos++ = 0; /* min tx power */
854 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
858 * Per spec, we shouldn't include the list of channels if we advertise
859 * support for extended channel switching, but we've always done that;
860 * (for now?) apply this restriction only on the (new) 6 GHz band.
862 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
863 (sband->band != NL80211_BAND_6GHZ ||
864 !ext_capa || ext_capa->datalen < 1 ||
865 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
866 /* TODO: get this in reg domain format */
867 pos = skb_put(skb, 2 * sband->n_channels + 2);
868 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
869 *pos++ = 2 * sband->n_channels;
870 for (i = 0; i < sband->n_channels; i++) {
871 *pos++ = ieee80211_frequency_to_channel(
872 sband->channels[i].center_freq);
873 *pos++ = 1; /* one channel in the subband*/
877 /* Set MBSSID support for HE AP if needed */
878 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
879 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
880 ext_capa && ext_capa->datalen >= 3)
881 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
883 /* if present, add any custom IEs that go before HT */
884 if (assoc_data->ie_len) {
885 static const u8 before_ht[] = {
888 WLAN_EID_EXT_SUPP_RATES,
889 WLAN_EID_PWR_CAPABILITY,
890 WLAN_EID_SUPPORTED_CHANNELS,
893 WLAN_EID_RRM_ENABLED_CAPABILITIES,
894 WLAN_EID_MOBILITY_DOMAIN,
895 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
896 WLAN_EID_RIC_DATA, /* reassoc only */
897 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
899 static const u8 after_ric[] = {
900 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
901 WLAN_EID_HT_CAPABILITY,
902 WLAN_EID_BSS_COEX_2040,
903 /* luckily this is almost always there */
904 WLAN_EID_EXT_CAPABILITY,
905 WLAN_EID_QOS_TRAFFIC_CAPA,
906 WLAN_EID_TIM_BCAST_REQ,
907 WLAN_EID_INTERWORKING,
908 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
909 WLAN_EID_VHT_CAPABILITY,
910 WLAN_EID_OPMODE_NOTIF,
913 noffset = ieee80211_ie_split_ric(assoc_data->ie,
916 ARRAY_SIZE(before_ht),
918 ARRAY_SIZE(after_ric),
920 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
924 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
925 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
926 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
928 if (sband->band != NL80211_BAND_6GHZ &&
929 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
930 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
931 sband, chan, sdata->smps_mode);
933 /* if present, add any custom IEs that go before VHT */
934 if (assoc_data->ie_len) {
935 static const u8 before_vht[] = {
937 * no need to list the ones split off before HT
940 WLAN_EID_BSS_COEX_2040,
941 WLAN_EID_EXT_CAPABILITY,
942 WLAN_EID_QOS_TRAFFIC_CAPA,
943 WLAN_EID_TIM_BCAST_REQ,
944 WLAN_EID_INTERWORKING,
945 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
948 /* RIC already taken above, so no need to handle here anymore */
949 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
950 before_vht, ARRAY_SIZE(before_vht),
952 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
956 /* if present, add any custom IEs that go before HE */
957 if (assoc_data->ie_len) {
958 static const u8 before_he[] = {
960 * no need to list the ones split off before VHT
963 WLAN_EID_OPMODE_NOTIF,
964 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
966 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
967 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
968 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
969 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
970 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
971 /* TODO: add 11ah/11aj/11ak elements */
974 /* RIC already taken above, so no need to handle here anymore */
975 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
976 before_he, ARRAY_SIZE(before_he),
978 pos = skb_put(skb, noffset - offset);
979 memcpy(pos, assoc_data->ie + offset, noffset - offset);
983 if (sband->band != NL80211_BAND_6GHZ &&
984 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
985 ieee80211_add_vht_ie(sdata, skb, sband,
986 &assoc_data->ap_vht_cap);
989 * If AP doesn't support HT, mark HE as disabled.
990 * If on the 5GHz band, make sure it supports VHT.
992 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
993 (sband->band == NL80211_BAND_5GHZ &&
994 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
995 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
997 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
998 ieee80211_add_he_ie(sdata, skb, sband);
1000 /* if present, add any custom non-vendor IEs that go after HE */
1001 if (assoc_data->ie_len) {
1002 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
1005 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1009 if (assoc_data->wmm) {
1010 if (assoc_data->uapsd) {
1011 qos_info = ifmgd->uapsd_queues;
1012 qos_info |= (ifmgd->uapsd_max_sp_len <<
1013 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
1018 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
1021 if (sband->band == NL80211_BAND_S1GHZ) {
1022 ieee80211_add_aid_request_ie(sdata, skb);
1023 ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
1026 if (iftd && iftd->vendor_elems.data && iftd->vendor_elems.len)
1027 skb_put_data(skb, iftd->vendor_elems.data, iftd->vendor_elems.len);
1029 /* add any remaining custom (i.e. vendor specific here) IEs */
1030 if (assoc_data->ie_len) {
1031 noffset = assoc_data->ie_len;
1032 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1035 if (assoc_data->fils_kek_len) {
1036 ret = fils_encrypt_assoc_req(skb, assoc_data);
1043 pos = skb_tail_pointer(skb);
1044 kfree(ifmgd->assoc_req_ies);
1045 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
1046 if (!ifmgd->assoc_req_ies) {
1051 ifmgd->assoc_req_ies_len = pos - ie_start;
1053 drv_mgd_prepare_tx(local, sdata, &info);
1055 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1056 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1057 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
1058 IEEE80211_TX_INTFL_MLME_CONN_TX;
1059 ieee80211_tx_skb(sdata, skb);
1064 void ieee80211_send_pspoll(struct ieee80211_local *local,
1065 struct ieee80211_sub_if_data *sdata)
1067 struct ieee80211_pspoll *pspoll;
1068 struct sk_buff *skb;
1070 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
1074 pspoll = (struct ieee80211_pspoll *) skb->data;
1075 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1077 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1078 ieee80211_tx_skb(sdata, skb);
1081 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1082 struct ieee80211_sub_if_data *sdata,
1085 struct sk_buff *skb;
1086 struct ieee80211_hdr_3addr *nullfunc;
1087 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1089 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1090 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
1094 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
1096 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1098 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1099 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
1101 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1102 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1104 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
1105 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1107 ieee80211_tx_skb(sdata, skb);
1110 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1111 struct ieee80211_sub_if_data *sdata)
1113 struct sk_buff *skb;
1114 struct ieee80211_hdr *nullfunc;
1117 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1120 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
1124 skb_reserve(skb, local->hw.extra_tx_headroom);
1126 nullfunc = skb_put_zero(skb, 30);
1127 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1128 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1129 nullfunc->frame_control = fc;
1130 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1131 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1132 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1133 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1135 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1136 ieee80211_tx_skb(sdata, skb);
1139 /* spectrum management related things */
1140 static void ieee80211_chswitch_work(struct work_struct *work)
1142 struct ieee80211_sub_if_data *sdata =
1143 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
1144 struct ieee80211_local *local = sdata->local;
1145 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1148 if (!ieee80211_sdata_running(sdata))
1152 mutex_lock(&local->mtx);
1153 mutex_lock(&local->chanctx_mtx);
1155 if (!ifmgd->associated)
1158 if (!sdata->vif.csa_active)
1162 * using reservation isn't immediate as it may be deferred until later
1163 * with multi-vif. once reservation is complete it will re-schedule the
1164 * work with no reserved_chanctx so verify chandef to check if it
1165 * completed successfully
1168 if (sdata->reserved_chanctx) {
1170 * with multi-vif csa driver may call ieee80211_csa_finish()
1171 * many times while waiting for other interfaces to use their
1174 if (sdata->reserved_ready)
1177 ret = ieee80211_vif_use_reserved_context(sdata);
1180 "failed to use reserved channel context, disconnecting (err=%d)\n",
1182 ieee80211_queue_work(&sdata->local->hw,
1183 &ifmgd->csa_connection_drop_work);
1190 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1191 &sdata->csa_chandef)) {
1193 "failed to finalize channel switch, disconnecting\n");
1194 ieee80211_queue_work(&sdata->local->hw,
1195 &ifmgd->csa_connection_drop_work);
1199 ifmgd->csa_waiting_bcn = true;
1201 ieee80211_sta_reset_beacon_monitor(sdata);
1202 ieee80211_sta_reset_conn_monitor(sdata);
1205 mutex_unlock(&local->chanctx_mtx);
1206 mutex_unlock(&local->mtx);
1207 sdata_unlock(sdata);
1210 static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1212 struct ieee80211_local *local = sdata->local;
1213 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1216 sdata_assert_lock(sdata);
1218 WARN_ON(!sdata->vif.csa_active);
1220 if (sdata->csa_block_tx) {
1221 ieee80211_wake_vif_queues(local, sdata,
1222 IEEE80211_QUEUE_STOP_REASON_CSA);
1223 sdata->csa_block_tx = false;
1226 sdata->vif.csa_active = false;
1227 ifmgd->csa_waiting_bcn = false;
1229 * If the CSA IE is still present on the beacon after the switch,
1230 * we need to consider it as a new CSA (possibly to self).
1232 ifmgd->beacon_crc_valid = false;
1234 ret = drv_post_channel_switch(sdata);
1237 "driver post channel switch failed, disconnecting\n");
1238 ieee80211_queue_work(&local->hw,
1239 &ifmgd->csa_connection_drop_work);
1243 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1246 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1248 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1249 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1251 trace_api_chswitch_done(sdata, success);
1254 "driver channel switch failed, disconnecting\n");
1255 ieee80211_queue_work(&sdata->local->hw,
1256 &ifmgd->csa_connection_drop_work);
1258 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
1261 EXPORT_SYMBOL(ieee80211_chswitch_done);
1263 static void ieee80211_chswitch_timer(struct timer_list *t)
1265 struct ieee80211_sub_if_data *sdata =
1266 from_timer(sdata, t, u.mgd.chswitch_timer);
1268 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
1272 ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1274 struct ieee80211_local *local = sdata->local;
1276 if (!local->ops->abort_channel_switch)
1279 mutex_lock(&local->mtx);
1281 mutex_lock(&local->chanctx_mtx);
1282 ieee80211_vif_unreserve_chanctx(sdata);
1283 mutex_unlock(&local->chanctx_mtx);
1285 if (sdata->csa_block_tx)
1286 ieee80211_wake_vif_queues(local, sdata,
1287 IEEE80211_QUEUE_STOP_REASON_CSA);
1289 sdata->csa_block_tx = false;
1290 sdata->vif.csa_active = false;
1292 mutex_unlock(&local->mtx);
1294 drv_abort_channel_switch(sdata);
1298 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1299 u64 timestamp, u32 device_timestamp,
1300 struct ieee802_11_elems *elems,
1303 struct ieee80211_local *local = sdata->local;
1304 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1305 struct cfg80211_bss *cbss = ifmgd->associated;
1306 struct ieee80211_chanctx_conf *conf;
1307 struct ieee80211_chanctx *chanctx;
1308 enum nl80211_band current_band;
1309 struct ieee80211_csa_ie csa_ie;
1310 struct ieee80211_channel_switch ch_switch;
1311 struct ieee80211_bss *bss;
1314 sdata_assert_lock(sdata);
1319 if (local->scanning)
1322 current_band = cbss->channel->band;
1323 bss = (void *)cbss->priv;
1324 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
1327 ifmgd->associated->bssid, &csa_ie);
1330 ch_switch.timestamp = timestamp;
1331 ch_switch.device_timestamp = device_timestamp;
1332 ch_switch.block_tx = csa_ie.mode;
1333 ch_switch.chandef = csa_ie.chandef;
1334 ch_switch.count = csa_ie.count;
1335 ch_switch.delay = csa_ie.max_switch_time;
1339 goto lock_and_drop_connection;
1341 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1343 ieee80211_sta_abort_chanswitch(sdata);
1345 drv_channel_switch_rx_beacon(sdata, &ch_switch);
1347 } else if (sdata->vif.csa_active || res) {
1348 /* disregard subsequent announcements if already processing */
1352 if (sdata->vif.bss_conf.chandef.chan->band !=
1353 csa_ie.chandef.chan->band) {
1355 "AP %pM switches to different band (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1356 ifmgd->associated->bssid,
1357 csa_ie.chandef.chan->center_freq,
1358 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1359 csa_ie.chandef.center_freq2);
1360 goto lock_and_drop_connection;
1363 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
1364 IEEE80211_CHAN_DISABLED)) {
1366 "AP %pM switches to unsupported channel "
1367 "(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
1369 ifmgd->associated->bssid,
1370 csa_ie.chandef.chan->center_freq,
1371 csa_ie.chandef.chan->freq_offset,
1372 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1373 csa_ie.chandef.freq1_offset,
1374 csa_ie.chandef.center_freq2);
1375 goto lock_and_drop_connection;
1378 if (cfg80211_chandef_identical(&csa_ie.chandef,
1379 &sdata->vif.bss_conf.chandef) &&
1380 (!csa_ie.mode || !beacon)) {
1381 if (ifmgd->csa_ignored_same_chan)
1384 "AP %pM tries to chanswitch to same channel, ignore\n",
1385 ifmgd->associated->bssid);
1386 ifmgd->csa_ignored_same_chan = true;
1391 * Drop all TDLS peers - either we disconnect or move to a different
1392 * channel from this point on. There's no telling what our peer will do.
1393 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1394 * have an incompatible wider chandef.
1396 ieee80211_teardown_tdls_peers(sdata);
1398 mutex_lock(&local->mtx);
1399 mutex_lock(&local->chanctx_mtx);
1400 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1401 lockdep_is_held(&local->chanctx_mtx));
1404 "no channel context assigned to vif?, disconnecting\n");
1405 goto drop_connection;
1408 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1410 if (local->use_chanctx &&
1411 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
1413 "driver doesn't support chan-switch with channel contexts\n");
1414 goto drop_connection;
1417 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1419 "preparing for channel switch failed, disconnecting\n");
1420 goto drop_connection;
1423 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1424 chanctx->mode, false);
1427 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1429 goto drop_connection;
1431 mutex_unlock(&local->chanctx_mtx);
1433 sdata->vif.csa_active = true;
1434 sdata->csa_chandef = csa_ie.chandef;
1435 sdata->csa_block_tx = csa_ie.mode;
1436 ifmgd->csa_ignored_same_chan = false;
1437 ifmgd->beacon_crc_valid = false;
1439 if (sdata->csa_block_tx)
1440 ieee80211_stop_vif_queues(local, sdata,
1441 IEEE80211_QUEUE_STOP_REASON_CSA);
1442 mutex_unlock(&local->mtx);
1444 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1445 csa_ie.count, csa_ie.mode);
1447 if (local->ops->channel_switch) {
1448 /* use driver's channel switch callback */
1449 drv_channel_switch(local, sdata, &ch_switch);
1453 /* channel switch handled in software */
1454 if (csa_ie.count <= 1)
1455 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
1457 mod_timer(&ifmgd->chswitch_timer,
1458 TU_TO_EXP_TIME((csa_ie.count - 1) *
1459 cbss->beacon_interval));
1461 lock_and_drop_connection:
1462 mutex_lock(&local->mtx);
1463 mutex_lock(&local->chanctx_mtx);
1466 * This is just so that the disconnect flow will know that
1467 * we were trying to switch channel and failed. In case the
1468 * mode is 1 (we are not allowed to Tx), we will know not to
1469 * send a deauthentication frame. Those two fields will be
1470 * reset when the disconnection worker runs.
1472 sdata->vif.csa_active = true;
1473 sdata->csa_block_tx = csa_ie.mode;
1475 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1476 mutex_unlock(&local->chanctx_mtx);
1477 mutex_unlock(&local->mtx);
1481 ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1482 struct ieee80211_channel *channel,
1483 const u8 *country_ie, u8 country_ie_len,
1484 const u8 *pwr_constr_elem,
1485 int *chan_pwr, int *pwr_reduction)
1487 struct ieee80211_country_ie_triplet *triplet;
1488 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1489 int i, chan_increment;
1490 bool have_chan_pwr = false;
1493 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1496 triplet = (void *)(country_ie + 3);
1497 country_ie_len -= 3;
1499 switch (channel->band) {
1503 case NL80211_BAND_2GHZ:
1504 case NL80211_BAND_60GHZ:
1507 case NL80211_BAND_5GHZ:
1510 case NL80211_BAND_6GHZ:
1512 * In the 6 GHz band, the "maximum transmit power level"
1513 * field in the triplets is reserved, and thus will be
1514 * zero and we shouldn't use it to control TX power.
1515 * The actual TX power will be given in the transmit
1516 * power envelope element instead.
1522 while (country_ie_len >= 3) {
1523 u8 first_channel = triplet->chans.first_channel;
1525 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1528 for (i = 0; i < triplet->chans.num_channels; i++) {
1529 if (first_channel + i * chan_increment == chan) {
1530 have_chan_pwr = true;
1531 *chan_pwr = triplet->chans.max_power;
1540 country_ie_len -= 3;
1543 if (have_chan_pwr && pwr_constr_elem)
1544 *pwr_reduction = *pwr_constr_elem;
1548 return have_chan_pwr;
1551 static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1552 struct ieee80211_channel *channel,
1553 const u8 *cisco_dtpc_ie,
1556 /* From practical testing, the first data byte of the DTPC element
1557 * seems to contain the requested dBm level, and the CLI on Cisco
1558 * APs clearly state the range is -127 to 127 dBm, which indicates
1559 * a signed byte, although it seemingly never actually goes negative.
1560 * The other byte seems to always be zero.
1562 *pwr_level = (__s8)cisco_dtpc_ie[4];
1565 static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1566 struct ieee80211_channel *channel,
1567 struct ieee80211_mgmt *mgmt,
1568 const u8 *country_ie, u8 country_ie_len,
1569 const u8 *pwr_constr_ie,
1570 const u8 *cisco_dtpc_ie)
1572 bool has_80211h_pwr = false, has_cisco_pwr = false;
1573 int chan_pwr = 0, pwr_reduction_80211h = 0;
1574 int pwr_level_cisco, pwr_level_80211h;
1576 __le16 capab = mgmt->u.probe_resp.capab_info;
1578 if (ieee80211_is_s1g_beacon(mgmt->frame_control))
1579 return 0; /* TODO */
1582 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1583 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
1584 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1585 sdata, channel, country_ie, country_ie_len,
1586 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
1588 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1591 if (cisco_dtpc_ie) {
1592 ieee80211_find_cisco_dtpc(
1593 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1594 has_cisco_pwr = true;
1597 if (!has_80211h_pwr && !has_cisco_pwr)
1600 /* If we have both 802.11h and Cisco DTPC, apply both limits
1601 * by picking the smallest of the two power levels advertised.
1603 if (has_80211h_pwr &&
1604 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1605 new_ap_level = pwr_level_80211h;
1607 if (sdata->ap_power_level == new_ap_level)
1611 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1612 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1613 sdata->u.mgd.bssid);
1614 } else { /* has_cisco_pwr is always true here. */
1615 new_ap_level = pwr_level_cisco;
1617 if (sdata->ap_power_level == new_ap_level)
1621 "Limiting TX power to %d dBm as advertised by %pM\n",
1622 pwr_level_cisco, sdata->u.mgd.bssid);
1625 sdata->ap_power_level = new_ap_level;
1626 if (__ieee80211_recalc_txpower(sdata))
1627 return BSS_CHANGED_TXPOWER;
1632 static void ieee80211_enable_ps(struct ieee80211_local *local,
1633 struct ieee80211_sub_if_data *sdata)
1635 struct ieee80211_conf *conf = &local->hw.conf;
1638 * If we are scanning right now then the parameters will
1639 * take effect when scan finishes.
1641 if (local->scanning)
1644 if (conf->dynamic_ps_timeout > 0 &&
1645 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
1646 mod_timer(&local->dynamic_ps_timer, jiffies +
1647 msecs_to_jiffies(conf->dynamic_ps_timeout));
1649 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
1650 ieee80211_send_nullfunc(local, sdata, true);
1652 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1653 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1656 conf->flags |= IEEE80211_CONF_PS;
1657 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1661 static void ieee80211_change_ps(struct ieee80211_local *local)
1663 struct ieee80211_conf *conf = &local->hw.conf;
1665 if (local->ps_sdata) {
1666 ieee80211_enable_ps(local, local->ps_sdata);
1667 } else if (conf->flags & IEEE80211_CONF_PS) {
1668 conf->flags &= ~IEEE80211_CONF_PS;
1669 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1670 del_timer_sync(&local->dynamic_ps_timer);
1671 cancel_work_sync(&local->dynamic_ps_enable_work);
1675 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1677 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1678 struct sta_info *sta = NULL;
1679 bool authorized = false;
1681 if (!mgd->powersave)
1687 if (!mgd->associated)
1690 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
1693 if (!mgd->have_beacon)
1697 sta = sta_info_get(sdata, mgd->bssid);
1699 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
1705 /* need to hold RTNL or interface lock */
1706 void ieee80211_recalc_ps(struct ieee80211_local *local)
1708 struct ieee80211_sub_if_data *sdata, *found = NULL;
1712 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
1713 local->ps_sdata = NULL;
1717 list_for_each_entry(sdata, &local->interfaces, list) {
1718 if (!ieee80211_sdata_running(sdata))
1720 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1721 /* If an AP vif is found, then disable PS
1722 * by setting the count to zero thereby setting
1728 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1734 if (count == 1 && ieee80211_powersave_allowed(found)) {
1735 u8 dtimper = found->u.mgd.dtim_period;
1737 timeout = local->dynamic_ps_forced_timeout;
1740 local->hw.conf.dynamic_ps_timeout = timeout;
1742 /* If the TIM IE is invalid, pretend the value is 1 */
1746 local->hw.conf.ps_dtim_period = dtimper;
1747 local->ps_sdata = found;
1749 local->ps_sdata = NULL;
1752 ieee80211_change_ps(local);
1755 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1757 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1759 if (sdata->vif.bss_conf.ps != ps_allowed) {
1760 sdata->vif.bss_conf.ps = ps_allowed;
1761 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1765 void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1767 struct ieee80211_local *local =
1768 container_of(work, struct ieee80211_local,
1769 dynamic_ps_disable_work);
1771 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1772 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1773 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1776 ieee80211_wake_queues_by_reason(&local->hw,
1777 IEEE80211_MAX_QUEUE_MAP,
1778 IEEE80211_QUEUE_STOP_REASON_PS,
1782 void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1784 struct ieee80211_local *local =
1785 container_of(work, struct ieee80211_local,
1786 dynamic_ps_enable_work);
1787 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
1788 struct ieee80211_if_managed *ifmgd;
1789 unsigned long flags;
1792 /* can only happen when PS was just disabled anyway */
1796 ifmgd = &sdata->u.mgd;
1798 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1801 if (local->hw.conf.dynamic_ps_timeout > 0) {
1802 /* don't enter PS if TX frames are pending */
1803 if (drv_tx_frames_pending(local)) {
1804 mod_timer(&local->dynamic_ps_timer, jiffies +
1806 local->hw.conf.dynamic_ps_timeout));
1811 * transmission can be stopped by others which leads to
1812 * dynamic_ps_timer expiry. Postpone the ps timer if it
1813 * is not the actual idle state.
1815 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1816 for (q = 0; q < local->hw.queues; q++) {
1817 if (local->queue_stop_reasons[q]) {
1818 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1820 mod_timer(&local->dynamic_ps_timer, jiffies +
1822 local->hw.conf.dynamic_ps_timeout));
1826 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1829 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1830 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1831 if (drv_tx_frames_pending(local)) {
1832 mod_timer(&local->dynamic_ps_timer, jiffies +
1834 local->hw.conf.dynamic_ps_timeout));
1836 ieee80211_send_nullfunc(local, sdata, true);
1837 /* Flush to get the tx status of nullfunc frame */
1838 ieee80211_flush_queues(local, sdata, false);
1842 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1843 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
1844 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1845 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1846 local->hw.conf.flags |= IEEE80211_CONF_PS;
1847 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1851 void ieee80211_dynamic_ps_timer(struct timer_list *t)
1853 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
1855 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
1858 void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1860 struct delayed_work *delayed_work = to_delayed_work(work);
1861 struct ieee80211_sub_if_data *sdata =
1862 container_of(delayed_work, struct ieee80211_sub_if_data,
1863 dfs_cac_timer_work);
1864 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
1866 mutex_lock(&sdata->local->mtx);
1867 if (sdata->wdev.cac_started) {
1868 ieee80211_vif_release_channel(sdata);
1869 cfg80211_cac_event(sdata->dev, &chandef,
1870 NL80211_RADAR_CAC_FINISHED,
1873 mutex_unlock(&sdata->local->mtx);
1877 __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1879 struct ieee80211_local *local = sdata->local;
1880 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1884 if (local->hw.queues < IEEE80211_NUM_ACS)
1887 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1888 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1890 unsigned long now = jiffies;
1892 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1893 tx_tspec->admitted_time &&
1894 time_after(now, tx_tspec->time_slice_start + HZ)) {
1895 tx_tspec->consumed_tx_time = 0;
1896 tx_tspec->time_slice_start = now;
1898 if (tx_tspec->downgraded)
1900 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1903 switch (tx_tspec->action) {
1904 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1905 /* take the original parameters */
1906 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1908 "failed to set TX queue parameters for queue %d\n",
1910 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1911 tx_tspec->downgraded = false;
1914 case TX_TSPEC_ACTION_DOWNGRADE:
1915 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1916 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1920 /* downgrade next lower non-ACM AC */
1921 for (non_acm_ac = ac + 1;
1922 non_acm_ac < IEEE80211_NUM_ACS;
1924 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1926 /* Usually the loop will result in using BK even if it
1927 * requires admission control, but such a configuration
1928 * makes no sense and we have to transmit somehow - the
1929 * AC selection does the same thing.
1930 * If we started out trying to downgrade from BK, then
1931 * the extra condition here might be needed.
1933 if (non_acm_ac >= IEEE80211_NUM_ACS)
1934 non_acm_ac = IEEE80211_AC_BK;
1935 if (drv_conf_tx(local, sdata, ac,
1936 &sdata->tx_conf[non_acm_ac]))
1938 "failed to set TX queue parameters for queue %d\n",
1940 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1942 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1943 tx_tspec->time_slice_start + HZ - now + 1);
1945 case TX_TSPEC_ACTION_NONE:
1954 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1956 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1957 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1960 static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1962 struct ieee80211_sub_if_data *sdata;
1964 sdata = container_of(work, struct ieee80211_sub_if_data,
1965 u.mgd.tx_tspec_wk.work);
1966 ieee80211_sta_handle_tspec_ac_params(sdata);
1971 ieee80211_sta_wmm_params(struct ieee80211_local *local,
1972 struct ieee80211_sub_if_data *sdata,
1973 const u8 *wmm_param, size_t wmm_param_len,
1974 const struct ieee80211_mu_edca_param_set *mu_edca)
1976 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
1977 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1979 int count, mu_edca_count, ac;
1981 u8 uapsd_queues = 0;
1983 if (!local->ops->conf_tx)
1986 if (local->hw.queues < IEEE80211_NUM_ACS)
1992 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
1995 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
1996 uapsd_queues = ifmgd->uapsd_queues;
1998 count = wmm_param[6] & 0x0f;
1999 /* -1 is the initial value of ifmgd->mu_edca_last_param_set.
2000 * if mu_edca was preset before and now it disappeared tell
2001 * the driver about it.
2003 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
2004 if (count == ifmgd->wmm_last_param_set &&
2005 mu_edca_count == ifmgd->mu_edca_last_param_set)
2007 ifmgd->wmm_last_param_set = count;
2008 ifmgd->mu_edca_last_param_set = mu_edca_count;
2010 pos = wmm_param + 8;
2011 left = wmm_param_len - 8;
2013 memset(¶ms, 0, sizeof(params));
2016 for (; left >= 4; left -= 4, pos += 4) {
2017 int aci = (pos[0] >> 5) & 0x03;
2018 int acm = (pos[0] >> 4) & 0x01;
2023 ac = IEEE80211_AC_BK;
2025 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
2026 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
2028 params[ac].mu_edca = !!mu_edca;
2030 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
2033 ac = IEEE80211_AC_VI;
2035 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
2036 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
2038 params[ac].mu_edca = !!mu_edca;
2040 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
2043 ac = IEEE80211_AC_VO;
2045 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
2046 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2048 params[ac].mu_edca = !!mu_edca;
2050 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
2054 ac = IEEE80211_AC_BE;
2056 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
2057 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2059 params[ac].mu_edca = !!mu_edca;
2061 params[ac].mu_edca_param_rec = mu_edca->ac_be;
2065 params[ac].aifs = pos[0] & 0x0f;
2067 if (params[ac].aifs < 2) {
2069 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2070 params[ac].aifs, aci);
2071 params[ac].aifs = 2;
2073 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2074 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2075 params[ac].txop = get_unaligned_le16(pos + 2);
2076 params[ac].acm = acm;
2077 params[ac].uapsd = uapsd;
2079 if (params[ac].cw_min == 0 ||
2080 params[ac].cw_min > params[ac].cw_max) {
2082 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2083 params[ac].cw_min, params[ac].cw_max, aci);
2086 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
2089 /* WMM specification requires all 4 ACIs. */
2090 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2091 if (params[ac].cw_min == 0) {
2093 "AP has invalid WMM params (missing AC %d), using defaults\n",
2099 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2101 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2103 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2104 params[ac].txop, params[ac].uapsd,
2105 ifmgd->tx_tspec[ac].downgraded);
2106 sdata->tx_conf[ac] = params[ac];
2107 if (!ifmgd->tx_tspec[ac].downgraded &&
2108 drv_conf_tx(local, sdata, ac, ¶ms[ac]))
2110 "failed to set TX queue parameters for AC %d\n",
2114 /* enable WMM or activate new settings */
2115 sdata->vif.bss_conf.qos = true;
2119 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2121 lockdep_assert_held(&sdata->local->mtx);
2123 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
2124 ieee80211_run_deferred_scan(sdata->local);
2127 static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2129 mutex_lock(&sdata->local->mtx);
2130 __ieee80211_stop_poll(sdata);
2131 mutex_unlock(&sdata->local->mtx);
2134 static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2135 u16 capab, bool erp_valid, u8 erp)
2137 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2138 struct ieee80211_supported_band *sband;
2140 bool use_protection;
2141 bool use_short_preamble;
2142 bool use_short_slot;
2144 sband = ieee80211_get_sband(sdata);
2149 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2150 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2152 use_protection = false;
2153 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2156 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
2157 if (sband->band == NL80211_BAND_5GHZ ||
2158 sband->band == NL80211_BAND_6GHZ)
2159 use_short_slot = true;
2161 if (use_protection != bss_conf->use_cts_prot) {
2162 bss_conf->use_cts_prot = use_protection;
2163 changed |= BSS_CHANGED_ERP_CTS_PROT;
2166 if (use_short_preamble != bss_conf->use_short_preamble) {
2167 bss_conf->use_short_preamble = use_short_preamble;
2168 changed |= BSS_CHANGED_ERP_PREAMBLE;
2171 if (use_short_slot != bss_conf->use_short_slot) {
2172 bss_conf->use_short_slot = use_short_slot;
2173 changed |= BSS_CHANGED_ERP_SLOT;
2179 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
2180 struct cfg80211_bss *cbss,
2181 u32 bss_info_changed)
2183 struct ieee80211_bss *bss = (void *)cbss->priv;
2184 struct ieee80211_local *local = sdata->local;
2185 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2187 bss_info_changed |= BSS_CHANGED_ASSOC;
2188 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
2189 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
2191 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
2192 beacon_loss_count * bss_conf->beacon_int));
2194 sdata->u.mgd.associated = cbss;
2195 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
2197 ieee80211_check_rate_mask(sdata);
2199 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2201 if (sdata->vif.p2p ||
2202 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
2203 const struct cfg80211_bss_ies *ies;
2206 ies = rcu_dereference(cbss->ies);
2210 ret = cfg80211_get_p2p_attr(
2211 ies->data, ies->len,
2212 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
2213 (u8 *) &bss_conf->p2p_noa_attr,
2214 sizeof(bss_conf->p2p_noa_attr));
2216 sdata->u.mgd.p2p_noa_index =
2217 bss_conf->p2p_noa_attr.index;
2218 bss_info_changed |= BSS_CHANGED_P2P_PS;
2224 /* just to be sure */
2225 ieee80211_stop_poll(sdata);
2227 ieee80211_led_assoc(local, 1);
2229 if (sdata->u.mgd.have_beacon) {
2231 * If the AP is buggy we may get here with no DTIM period
2232 * known, so assume it's 1 which is the only safe assumption
2233 * in that case, although if the TIM IE is broken powersave
2234 * probably just won't work at all.
2236 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
2237 bss_conf->beacon_rate = bss->beacon_rate;
2238 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
2240 bss_conf->beacon_rate = NULL;
2241 bss_conf->dtim_period = 0;
2244 bss_conf->assoc = 1;
2246 /* Tell the driver to monitor connection quality (if supported) */
2247 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
2248 bss_conf->cqm_rssi_thold)
2249 bss_info_changed |= BSS_CHANGED_CQM;
2251 /* Enable ARP filtering */
2252 if (bss_conf->arp_addr_cnt)
2253 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
2255 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
2257 mutex_lock(&local->iflist_mtx);
2258 ieee80211_recalc_ps(local);
2259 mutex_unlock(&local->iflist_mtx);
2261 ieee80211_recalc_smps(sdata);
2262 ieee80211_recalc_ps_vif(sdata);
2264 netif_carrier_on(sdata->dev);
2267 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
2268 u16 stype, u16 reason, bool tx,
2271 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2272 struct ieee80211_local *local = sdata->local;
2274 struct ieee80211_prep_tx_info info = {
2278 sdata_assert_lock(sdata);
2280 if (WARN_ON_ONCE(tx && !frame_buf))
2283 if (WARN_ON(!ifmgd->associated))
2286 ieee80211_stop_poll(sdata);
2288 ifmgd->associated = NULL;
2289 netif_carrier_off(sdata->dev);
2292 * if we want to get out of ps before disassoc (why?) we have
2293 * to do it before sending disassoc, as otherwise the null-packet
2296 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2297 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2298 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2300 local->ps_sdata = NULL;
2302 /* disable per-vif ps */
2303 ieee80211_recalc_ps_vif(sdata);
2305 /* make sure ongoing transmission finishes */
2309 * drop any frame before deauth/disassoc, this can be data or
2310 * management frame. Since we are disconnecting, we should not
2311 * insist sending these frames which can take time and delay
2312 * the disconnection and possible the roaming.
2315 ieee80211_flush_queues(local, sdata, true);
2317 /* deauthenticate/disassociate now */
2318 if (tx || frame_buf) {
2320 * In multi channel scenarios guarantee that the virtual
2321 * interface is granted immediate airtime to transmit the
2322 * deauthentication frame by calling mgd_prepare_tx, if the
2323 * driver requested so.
2325 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2326 !ifmgd->have_beacon) {
2327 drv_mgd_prepare_tx(sdata->local, sdata, &info);
2330 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
2331 ifmgd->bssid, stype, reason,
2335 /* flush out frame - make sure the deauth was actually sent */
2337 ieee80211_flush_queues(local, sdata, false);
2339 drv_mgd_complete_tx(sdata->local, sdata, &info);
2341 /* clear bssid only after building the needed mgmt frames */
2342 eth_zero_addr(ifmgd->bssid);
2344 sdata->vif.bss_conf.ssid_len = 0;
2346 /* remove AP and TDLS peers */
2347 sta_info_flush(sdata);
2349 /* finally reset all BSS / config parameters */
2350 changed |= ieee80211_reset_erp_info(sdata);
2352 ieee80211_led_assoc(local, 0);
2353 changed |= BSS_CHANGED_ASSOC;
2354 sdata->vif.bss_conf.assoc = false;
2356 ifmgd->p2p_noa_index = -1;
2357 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2358 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
2360 /* on the next assoc, re-program HT/VHT parameters */
2361 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2362 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
2363 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2364 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
2366 /* reset MU-MIMO ownership and group data */
2367 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2368 sizeof(sdata->vif.bss_conf.mu_group.membership));
2369 memset(sdata->vif.bss_conf.mu_group.position, 0,
2370 sizeof(sdata->vif.bss_conf.mu_group.position));
2371 changed |= BSS_CHANGED_MU_GROUPS;
2372 sdata->vif.mu_mimo_owner = false;
2374 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
2376 del_timer_sync(&local->dynamic_ps_timer);
2377 cancel_work_sync(&local->dynamic_ps_enable_work);
2379 /* Disable ARP filtering */
2380 if (sdata->vif.bss_conf.arp_addr_cnt)
2381 changed |= BSS_CHANGED_ARP_FILTER;
2383 sdata->vif.bss_conf.qos = false;
2384 changed |= BSS_CHANGED_QOS;
2386 /* The BSSID (not really interesting) and HT changed */
2387 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
2388 ieee80211_bss_info_change_notify(sdata, changed);
2390 /* disassociated - set to defaults now */
2391 ieee80211_set_wmm_default(sdata, false, false);
2393 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2394 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2395 del_timer_sync(&sdata->u.mgd.timer);
2396 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2398 sdata->vif.bss_conf.dtim_period = 0;
2399 sdata->vif.bss_conf.beacon_rate = NULL;
2401 ifmgd->have_beacon = false;
2404 mutex_lock(&local->mtx);
2405 ieee80211_vif_release_channel(sdata);
2407 sdata->vif.csa_active = false;
2408 ifmgd->csa_waiting_bcn = false;
2409 ifmgd->csa_ignored_same_chan = false;
2410 if (sdata->csa_block_tx) {
2411 ieee80211_wake_vif_queues(local, sdata,
2412 IEEE80211_QUEUE_STOP_REASON_CSA);
2413 sdata->csa_block_tx = false;
2415 mutex_unlock(&local->mtx);
2417 /* existing TX TSPEC sessions no longer exist */
2418 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2419 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2421 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
2424 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2426 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2427 struct ieee80211_local *local = sdata->local;
2429 mutex_lock(&local->mtx);
2430 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2433 __ieee80211_stop_poll(sdata);
2435 mutex_lock(&local->iflist_mtx);
2436 ieee80211_recalc_ps(local);
2437 mutex_unlock(&local->iflist_mtx);
2439 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
2443 * We've received a probe response, but are not sure whether
2444 * we have or will be receiving any beacons or data, so let's
2445 * schedule the timers again, just in case.
2447 ieee80211_sta_reset_beacon_monitor(sdata);
2449 mod_timer(&ifmgd->conn_mon_timer,
2450 round_jiffies_up(jiffies +
2451 IEEE80211_CONNECTION_IDLE_TIME));
2453 mutex_unlock(&local->mtx);
2456 static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2457 struct ieee80211_hdr *hdr,
2460 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2463 struct ieee80211_sta_tx_tspec *tx_tspec;
2464 unsigned long now = jiffies;
2466 if (!ieee80211_is_data_qos(hdr->frame_control))
2469 tid = ieee80211_get_tid(hdr);
2470 ac = ieee80211_ac_from_tid(tid);
2471 tx_tspec = &ifmgd->tx_tspec[ac];
2473 if (likely(!tx_tspec->admitted_time))
2476 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2477 tx_tspec->consumed_tx_time = 0;
2478 tx_tspec->time_slice_start = now;
2480 if (tx_tspec->downgraded) {
2481 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2482 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2486 if (tx_tspec->downgraded)
2489 tx_tspec->consumed_tx_time += tx_time;
2491 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2492 tx_tspec->downgraded = true;
2493 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2494 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2498 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2499 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
2501 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2503 if (!ieee80211_is_any_nullfunc(hdr->frame_control) ||
2504 !sdata->u.mgd.probe_send_count)
2508 sdata->u.mgd.probe_send_count = 0;
2510 sdata->u.mgd.nullfunc_failed = true;
2511 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2514 static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2515 const u8 *src, const u8 *dst,
2516 const u8 *ssid, size_t ssid_len,
2517 struct ieee80211_channel *channel)
2519 struct sk_buff *skb;
2521 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2522 ssid, ssid_len, NULL, 0,
2523 IEEE80211_PROBE_FLAG_DIRECTED);
2525 ieee80211_tx_skb(sdata, skb);
2528 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2530 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2532 u8 *dst = ifmgd->associated->bssid;
2533 u8 unicast_limit = max(1, max_probe_tries - 3);
2534 struct sta_info *sta;
2537 * Try sending broadcast probe requests for the last three
2538 * probe requests after the first ones failed since some
2539 * buggy APs only support broadcast probe requests.
2541 if (ifmgd->probe_send_count >= unicast_limit)
2545 * When the hardware reports an accurate Tx ACK status, it's
2546 * better to send a nullfunc frame instead of a probe request,
2547 * as it will kick us off the AP quickly if we aren't associated
2548 * anymore. The timeout will be reset if the frame is ACKed by
2551 ifmgd->probe_send_count++;
2554 mutex_lock(&sdata->local->sta_mtx);
2555 sta = sta_info_get(sdata, dst);
2557 ieee80211_check_fast_rx(sta);
2558 mutex_unlock(&sdata->local->sta_mtx);
2561 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
2562 ifmgd->nullfunc_failed = false;
2563 ieee80211_send_nullfunc(sdata->local, sdata, false);
2568 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
2569 if (WARN_ON_ONCE(ssid == NULL))
2574 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2576 ifmgd->associated->channel);
2580 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
2581 run_again(sdata, ifmgd->probe_timeout);
2584 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2587 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2588 bool already = false;
2590 if (!ieee80211_sdata_running(sdata))
2595 if (!ifmgd->associated)
2598 mutex_lock(&sdata->local->mtx);
2600 if (sdata->local->tmp_channel || sdata->local->scanning) {
2601 mutex_unlock(&sdata->local->mtx);
2606 mlme_dbg_ratelimited(sdata,
2607 "detected beacon loss from AP (missed %d beacons) - probing\n",
2610 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
2614 * The driver/our work has already reported this event or the
2615 * connection monitoring has kicked in and we have already sent
2616 * a probe request. Or maybe the AP died and the driver keeps
2617 * reporting until we disassociate...
2619 * In either case we have to ignore the current call to this
2620 * function (except for setting the correct probe reason bit)
2621 * because otherwise we would reset the timer every time and
2622 * never check whether we received a probe response!
2624 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
2627 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2629 mutex_unlock(&sdata->local->mtx);
2634 mutex_lock(&sdata->local->iflist_mtx);
2635 ieee80211_recalc_ps(sdata->local);
2636 mutex_unlock(&sdata->local->iflist_mtx);
2638 ifmgd->probe_send_count = 0;
2639 ieee80211_mgd_probe_ap_send(sdata);
2641 sdata_unlock(sdata);
2644 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2645 struct ieee80211_vif *vif)
2647 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2648 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2649 struct cfg80211_bss *cbss;
2650 struct sk_buff *skb;
2654 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2657 sdata_assert_lock(sdata);
2659 if (ifmgd->associated)
2660 cbss = ifmgd->associated;
2661 else if (ifmgd->auth_data)
2662 cbss = ifmgd->auth_data->bss;
2663 else if (ifmgd->assoc_data)
2664 cbss = ifmgd->assoc_data->bss;
2669 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
2670 if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
2671 "invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
2676 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
2677 (u32) -1, cbss->channel,
2679 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
2684 EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2686 static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2687 const u8 *buf, size_t len, bool tx,
2688 u16 reason, bool reconnect)
2690 struct ieee80211_event event = {
2692 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2693 .u.mlme.reason = reason,
2697 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len, reconnect);
2699 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2701 drv_event_callback(sdata->local, sdata, &event);
2704 static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
2706 struct ieee80211_local *local = sdata->local;
2707 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2708 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
2712 if (!ifmgd->associated) {
2713 sdata_unlock(sdata);
2717 tx = !sdata->csa_block_tx;
2719 if (!ifmgd->driver_disconnect) {
2721 * AP is probably out of range (or not reachable for another
2722 * reason) so remove the bss struct for that AP.
2724 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2727 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2728 ifmgd->driver_disconnect ?
2729 WLAN_REASON_DEAUTH_LEAVING :
2730 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2732 mutex_lock(&local->mtx);
2733 sdata->vif.csa_active = false;
2734 ifmgd->csa_waiting_bcn = false;
2735 if (sdata->csa_block_tx) {
2736 ieee80211_wake_vif_queues(local, sdata,
2737 IEEE80211_QUEUE_STOP_REASON_CSA);
2738 sdata->csa_block_tx = false;
2740 mutex_unlock(&local->mtx);
2742 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
2743 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2745 ifmgd->reconnect = false;
2747 sdata_unlock(sdata);
2750 static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
2752 struct ieee80211_sub_if_data *sdata =
2753 container_of(work, struct ieee80211_sub_if_data,
2754 u.mgd.beacon_connection_loss_work);
2755 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2757 if (ifmgd->associated)
2758 ifmgd->beacon_loss_count++;
2760 if (ifmgd->connection_loss) {
2761 sdata_info(sdata, "Connection to AP %pM lost\n",
2763 __ieee80211_disconnect(sdata);
2764 ifmgd->connection_loss = false;
2765 } else if (ifmgd->driver_disconnect) {
2767 "Driver requested disconnection from AP %pM\n",
2769 __ieee80211_disconnect(sdata);
2770 ifmgd->driver_disconnect = false;
2772 ieee80211_mgd_probe_ap(sdata, true);
2776 static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2778 struct ieee80211_sub_if_data *sdata =
2779 container_of(work, struct ieee80211_sub_if_data,
2780 u.mgd.csa_connection_drop_work);
2782 __ieee80211_disconnect(sdata);
2785 void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2787 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2788 struct ieee80211_hw *hw = &sdata->local->hw;
2790 trace_api_beacon_loss(sdata);
2792 sdata->u.mgd.connection_loss = false;
2793 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2795 EXPORT_SYMBOL(ieee80211_beacon_loss);
2797 void ieee80211_connection_loss(struct ieee80211_vif *vif)
2799 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2800 struct ieee80211_hw *hw = &sdata->local->hw;
2802 trace_api_connection_loss(sdata);
2804 sdata->u.mgd.connection_loss = true;
2805 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2807 EXPORT_SYMBOL(ieee80211_connection_loss);
2809 void ieee80211_disconnect(struct ieee80211_vif *vif, bool reconnect)
2811 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2812 struct ieee80211_hw *hw = &sdata->local->hw;
2814 trace_api_disconnect(sdata, reconnect);
2816 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2819 sdata->u.mgd.driver_disconnect = true;
2820 sdata->u.mgd.reconnect = reconnect;
2821 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2823 EXPORT_SYMBOL(ieee80211_disconnect);
2825 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2828 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2830 sdata_assert_lock(sdata);
2834 * we are not authenticated yet, the only timer that could be
2835 * running is the timeout for the authentication response which
2836 * which is not relevant anymore.
2838 del_timer_sync(&sdata->u.mgd.timer);
2839 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2841 eth_zero_addr(sdata->u.mgd.bssid);
2842 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2843 sdata->u.mgd.flags = 0;
2844 mutex_lock(&sdata->local->mtx);
2845 ieee80211_vif_release_channel(sdata);
2846 mutex_unlock(&sdata->local->mtx);
2849 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
2851 sdata->u.mgd.auth_data = NULL;
2854 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2855 bool assoc, bool abandon)
2857 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2859 sdata_assert_lock(sdata);
2863 * we are not associated yet, the only timer that could be
2864 * running is the timeout for the association response which
2865 * which is not relevant anymore.
2867 del_timer_sync(&sdata->u.mgd.timer);
2868 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2870 eth_zero_addr(sdata->u.mgd.bssid);
2871 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2872 sdata->u.mgd.flags = 0;
2873 sdata->vif.mu_mimo_owner = false;
2875 mutex_lock(&sdata->local->mtx);
2876 ieee80211_vif_release_channel(sdata);
2877 mutex_unlock(&sdata->local->mtx);
2880 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
2884 sdata->u.mgd.assoc_data = NULL;
2887 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2888 struct ieee80211_mgmt *mgmt, size_t len)
2890 struct ieee80211_local *local = sdata->local;
2891 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2892 const struct element *challenge;
2895 struct ieee80211_prep_tx_info info = {
2896 .subtype = IEEE80211_STYPE_AUTH,
2899 pos = mgmt->u.auth.variable;
2900 challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos,
2901 len - (pos - (u8 *)mgmt));
2904 auth_data->expected_transaction = 4;
2905 drv_mgd_prepare_tx(sdata->local, sdata, &info);
2906 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2907 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2908 IEEE80211_TX_INTFL_MLME_CONN_TX;
2909 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
2911 challenge->datalen + sizeof(*challenge),
2912 auth_data->bss->bssid, auth_data->bss->bssid,
2913 auth_data->key, auth_data->key_len,
2914 auth_data->key_idx, tx_flags);
2917 static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2920 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2921 struct sta_info *sta;
2924 sdata_info(sdata, "authenticated\n");
2925 ifmgd->auth_data->done = true;
2926 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2927 ifmgd->auth_data->timeout_started = true;
2928 run_again(sdata, ifmgd->auth_data->timeout);
2930 /* move station state to auth */
2931 mutex_lock(&sdata->local->sta_mtx);
2932 sta = sta_info_get(sdata, bssid);
2934 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2938 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2939 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
2945 mutex_unlock(&sdata->local->sta_mtx);
2949 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2950 struct ieee80211_mgmt *mgmt, size_t len)
2952 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2954 u16 auth_alg, auth_transaction, status_code;
2955 struct ieee80211_event event = {
2957 .u.mlme.data = AUTH_EVENT,
2959 struct ieee80211_prep_tx_info info = {
2960 .subtype = IEEE80211_STYPE_AUTH,
2963 sdata_assert_lock(sdata);
2968 if (!ifmgd->auth_data || ifmgd->auth_data->done)
2971 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2973 if (!ether_addr_equal(bssid, mgmt->bssid))
2976 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2977 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2978 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2980 if (auth_alg != ifmgd->auth_data->algorithm ||
2981 (auth_alg != WLAN_AUTH_SAE &&
2982 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2983 (auth_alg == WLAN_AUTH_SAE &&
2984 (auth_transaction < ifmgd->auth_data->expected_transaction ||
2985 auth_transaction > 2))) {
2986 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2987 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2989 ifmgd->auth_data->expected_transaction);
2993 if (status_code != WLAN_STATUS_SUCCESS) {
2994 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2996 if (auth_alg == WLAN_AUTH_SAE &&
2997 (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
2998 (auth_transaction == 1 &&
2999 (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
3000 status_code == WLAN_STATUS_SAE_PK)))) {
3001 /* waiting for userspace now */
3002 ifmgd->auth_data->waiting = true;
3003 ifmgd->auth_data->timeout =
3004 jiffies + IEEE80211_AUTH_WAIT_SAE_RETRY;
3005 ifmgd->auth_data->timeout_started = true;
3006 run_again(sdata, ifmgd->auth_data->timeout);
3010 sdata_info(sdata, "%pM denied authentication (status %d)\n",
3011 mgmt->sa, status_code);
3012 ieee80211_destroy_auth_data(sdata, false);
3013 event.u.mlme.status = MLME_DENIED;
3014 event.u.mlme.reason = status_code;
3015 drv_event_callback(sdata->local, sdata, &event);
3019 switch (ifmgd->auth_data->algorithm) {
3020 case WLAN_AUTH_OPEN:
3021 case WLAN_AUTH_LEAP:
3024 case WLAN_AUTH_FILS_SK:
3025 case WLAN_AUTH_FILS_SK_PFS:
3026 case WLAN_AUTH_FILS_PK:
3028 case WLAN_AUTH_SHARED_KEY:
3029 if (ifmgd->auth_data->expected_transaction != 4) {
3030 ieee80211_auth_challenge(sdata, mgmt, len);
3031 /* need another frame */
3036 WARN_ONCE(1, "invalid auth alg %d",
3037 ifmgd->auth_data->algorithm);
3041 event.u.mlme.status = MLME_SUCCESS;
3043 drv_event_callback(sdata->local, sdata, &event);
3044 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
3045 (auth_transaction == 2 &&
3046 ifmgd->auth_data->expected_transaction == 2)) {
3047 if (!ieee80211_mark_sta_auth(sdata, bssid))
3048 return; /* ignore frame -- wait for timeout */
3049 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
3050 auth_transaction == 2) {
3051 sdata_info(sdata, "SAE peer confirmed\n");
3052 ifmgd->auth_data->peer_confirmed = true;
3055 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3057 drv_mgd_complete_tx(sdata->local, sdata, &info);
3060 #define case_WLAN(type) \
3061 case WLAN_REASON_##type: return #type
3063 const char *ieee80211_get_reason_code_string(u16 reason_code)
3065 switch (reason_code) {
3066 case_WLAN(UNSPECIFIED);
3067 case_WLAN(PREV_AUTH_NOT_VALID);
3068 case_WLAN(DEAUTH_LEAVING);
3069 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
3070 case_WLAN(DISASSOC_AP_BUSY);
3071 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
3072 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
3073 case_WLAN(DISASSOC_STA_HAS_LEFT);
3074 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
3075 case_WLAN(DISASSOC_BAD_POWER);
3076 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
3077 case_WLAN(INVALID_IE);
3078 case_WLAN(MIC_FAILURE);
3079 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
3080 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
3081 case_WLAN(IE_DIFFERENT);
3082 case_WLAN(INVALID_GROUP_CIPHER);
3083 case_WLAN(INVALID_PAIRWISE_CIPHER);
3084 case_WLAN(INVALID_AKMP);
3085 case_WLAN(UNSUPP_RSN_VERSION);
3086 case_WLAN(INVALID_RSN_IE_CAP);
3087 case_WLAN(IEEE8021X_FAILED);
3088 case_WLAN(CIPHER_SUITE_REJECTED);
3089 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3090 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3091 case_WLAN(DISASSOC_LOW_ACK);
3092 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3093 case_WLAN(QSTA_LEAVE_QBSS);
3094 case_WLAN(QSTA_NOT_USE);
3095 case_WLAN(QSTA_REQUIRE_SETUP);
3096 case_WLAN(QSTA_TIMEOUT);
3097 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3098 case_WLAN(MESH_PEER_CANCELED);
3099 case_WLAN(MESH_MAX_PEERS);
3100 case_WLAN(MESH_CONFIG);
3101 case_WLAN(MESH_CLOSE);
3102 case_WLAN(MESH_MAX_RETRIES);
3103 case_WLAN(MESH_CONFIRM_TIMEOUT);
3104 case_WLAN(MESH_INVALID_GTK);
3105 case_WLAN(MESH_INCONSISTENT_PARAM);
3106 case_WLAN(MESH_INVALID_SECURITY);
3107 case_WLAN(MESH_PATH_ERROR);
3108 case_WLAN(MESH_PATH_NOFORWARD);
3109 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3110 case_WLAN(MAC_EXISTS_IN_MBSS);
3111 case_WLAN(MESH_CHAN_REGULATORY);
3112 case_WLAN(MESH_CHAN);
3113 default: return "<unknown>";
3117 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3118 struct ieee80211_mgmt *mgmt, size_t len)
3120 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3121 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
3123 sdata_assert_lock(sdata);
3128 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3129 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3133 if (ifmgd->associated &&
3134 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3135 const u8 *bssid = ifmgd->associated->bssid;
3137 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3139 ieee80211_get_reason_code_string(reason_code));
3141 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3143 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3144 reason_code, false);
3148 if (ifmgd->assoc_data &&
3149 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3150 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
3153 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3155 ieee80211_get_reason_code_string(reason_code));
3157 ieee80211_destroy_assoc_data(sdata, false, true);
3159 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3165 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3166 struct ieee80211_mgmt *mgmt, size_t len)
3168 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3171 sdata_assert_lock(sdata);
3176 if (!ifmgd->associated ||
3177 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3180 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3182 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3183 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3187 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3188 mgmt->sa, reason_code,
3189 ieee80211_get_reason_code_string(reason_code));
3191 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3193 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code,
3197 static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3198 u8 *supp_rates, unsigned int supp_rates_len,
3199 u32 *rates, u32 *basic_rates,
3200 bool *have_higher_than_11mbit,
3201 int *min_rate, int *min_rate_index,
3206 for (i = 0; i < supp_rates_len; i++) {
3207 int rate = supp_rates[i] & 0x7f;
3208 bool is_basic = !!(supp_rates[i] & 0x80);
3210 if ((rate * 5 * (1 << shift)) > 110)
3211 *have_higher_than_11mbit = true;
3214 * Skip HT, VHT, HE and SAE H2E only BSS membership selectors
3215 * since they're not rates.
3217 * Note: Even though the membership selector and the basic
3218 * rate flag share the same bit, they are not exactly
3221 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
3222 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
3223 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY) ||
3224 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_SAE_H2E))
3227 for (j = 0; j < sband->n_bitrates; j++) {
3228 struct ieee80211_rate *br;
3231 br = &sband->bitrates[j];
3233 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3234 if (brate == rate) {
3237 *basic_rates |= BIT(j);
3238 if ((rate * 5) < *min_rate) {
3239 *min_rate = rate * 5;
3240 *min_rate_index = j;
3248 static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3249 const struct ieee802_11_elems *elems)
3251 if (elems->ext_capab_len < 10)
3254 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3257 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3258 IEEE80211_HE_MAC_CAP0_TWT_RES;
3261 static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3262 struct sta_info *sta,
3263 struct ieee802_11_elems *elems)
3265 bool twt = ieee80211_twt_req_supported(sta, elems);
3267 if (sdata->vif.bss_conf.twt_requester != twt) {
3268 sdata->vif.bss_conf.twt_requester = twt;
3269 return BSS_CHANGED_TWT;
3274 static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata,
3275 struct ieee80211_bss_conf *bss_conf,
3276 struct ieee80211_supported_band *sband,
3277 struct sta_info *sta)
3279 const struct ieee80211_sta_he_cap *own_he_cap =
3280 ieee80211_get_he_iftype_cap(sband,
3281 ieee80211_vif_type_p2p(&sdata->vif));
3283 return bss_conf->he_support &&
3284 (sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3285 IEEE80211_HE_MAC_CAP2_BCAST_TWT) &&
3287 (own_he_cap->he_cap_elem.mac_cap_info[2] &
3288 IEEE80211_HE_MAC_CAP2_BCAST_TWT);
3291 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3292 struct cfg80211_bss *cbss,
3293 struct ieee80211_mgmt *mgmt, size_t len,
3294 struct ieee802_11_elems *elems)
3296 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3297 struct ieee80211_local *local = sdata->local;
3298 struct ieee80211_supported_band *sband;
3299 struct sta_info *sta;
3300 u16 capab_info, aid;
3301 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3302 const struct cfg80211_bss_ies *bss_ies = NULL;
3303 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3304 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
3305 bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
3311 /* AssocResp and ReassocResp have identical structure */
3313 pos = mgmt->u.assoc_resp.variable;
3314 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3316 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3319 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3320 elems = ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false,
3321 mgmt->bssid, assoc_data->bss->bssid);
3326 if (elems->aid_resp)
3327 aid = le16_to_cpu(elems->aid_resp->aid);
3330 * The 5 MSB of the AID field are reserved
3331 * (802.11-2016 9.4.1.8 AID field)
3335 ifmgd->broken_ap = false;
3337 if (aid == 0 || aid > IEEE80211_MAX_AID) {
3338 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3341 ifmgd->broken_ap = true;
3344 if (!is_s1g && !elems->supp_rates) {
3345 sdata_info(sdata, "no SuppRates element in AssocResp\n");
3350 sdata->vif.bss_conf.aid = aid;
3351 ifmgd->tdls_chan_switch_prohibited =
3352 elems->ext_capab && elems->ext_capab_len >= 5 &&
3353 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
3356 * Some APs are erroneously not including some information in their
3357 * (re)association response frames. Try to recover by using the data
3358 * from the beacon or probe response. This seems to afflict mobile
3359 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
3360 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
3363 ((assoc_data->wmm && !elems->wmm_param) ||
3364 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3365 (!elems->ht_cap_elem || !elems->ht_operation)) ||
3366 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3367 (!elems->vht_cap_elem || !elems->vht_operation)))) {
3368 const struct cfg80211_bss_ies *ies;
3369 struct ieee802_11_elems *bss_elems;
3372 ies = rcu_dereference(cbss->ies);
3374 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3382 bss_elems = ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
3384 assoc_data->bss->bssid);
3390 if (assoc_data->wmm &&
3391 !elems->wmm_param && bss_elems->wmm_param) {
3392 elems->wmm_param = bss_elems->wmm_param;
3394 "AP bug: WMM param missing from AssocResp\n");
3398 * Also check if we requested HT/VHT, otherwise the AP doesn't
3399 * have to include the IEs in the (re)association response.
3401 if (!elems->ht_cap_elem && bss_elems->ht_cap_elem &&
3402 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3403 elems->ht_cap_elem = bss_elems->ht_cap_elem;
3405 "AP bug: HT capability missing from AssocResp\n");
3407 if (!elems->ht_operation && bss_elems->ht_operation &&
3408 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3409 elems->ht_operation = bss_elems->ht_operation;
3411 "AP bug: HT operation missing from AssocResp\n");
3413 if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
3414 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3415 elems->vht_cap_elem = bss_elems->vht_cap_elem;
3417 "AP bug: VHT capa missing from AssocResp\n");
3419 if (!elems->vht_operation && bss_elems->vht_operation &&
3420 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3421 elems->vht_operation = bss_elems->vht_operation;
3423 "AP bug: VHT operation missing from AssocResp\n");
3430 * We previously checked these in the beacon/probe response, so
3431 * they should be present here. This is just a safety net.
3433 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3434 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
3436 "HT AP is missing WMM params or HT capability/operation\n");
3441 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3442 (!elems->vht_cap_elem || !elems->vht_operation)) {
3444 "VHT AP is missing VHT capability/operation\n");
3449 if (is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3450 !elems->he_6ghz_capa) {
3452 "HE 6 GHz AP is missing HE 6 GHz band capability\n");
3457 mutex_lock(&sdata->local->sta_mtx);
3459 * station info was already allocated and inserted before
3460 * the association and should be available to us
3462 sta = sta_info_get(sdata, cbss->bssid);
3463 if (WARN_ON(!sta)) {
3464 mutex_unlock(&sdata->local->sta_mtx);
3469 sband = ieee80211_get_sband(sdata);
3471 mutex_unlock(&sdata->local->sta_mtx);
3476 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3477 (!elems->he_cap || !elems->he_operation)) {
3478 mutex_unlock(&sdata->local->sta_mtx);
3480 "HE AP is missing HE capability/operation\n");
3485 /* Set up internal HT/VHT capabilities */
3486 if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
3487 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
3488 elems->ht_cap_elem, sta);
3490 if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
3491 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
3492 elems->vht_cap_elem, sta);
3494 if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3496 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
3499 elems->he_6ghz_capa,
3502 bss_conf->he_support = sta->sta.he_cap.has_he;
3503 if (elems->rsnx && elems->rsnx_len &&
3504 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
3505 wiphy_ext_feature_isset(local->hw.wiphy,
3506 NL80211_EXT_FEATURE_PROTECTED_TWT))
3507 bss_conf->twt_protected = true;
3509 bss_conf->twt_protected = false;
3511 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
3513 bss_conf->he_support = false;
3514 bss_conf->twt_requester = false;
3515 bss_conf->twt_protected = false;
3518 bss_conf->twt_broadcast =
3519 ieee80211_twt_bcast_support(sdata, bss_conf, sband, sta);
3521 if (bss_conf->he_support) {
3522 bss_conf->he_bss_color.color =
3523 le32_get_bits(elems->he_operation->he_oper_params,
3524 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
3525 bss_conf->he_bss_color.partial =
3526 le32_get_bits(elems->he_operation->he_oper_params,
3527 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
3528 bss_conf->he_bss_color.enabled =
3529 !le32_get_bits(elems->he_operation->he_oper_params,
3530 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3532 if (bss_conf->he_bss_color.enabled)
3533 changed |= BSS_CHANGED_HE_BSS_COLOR;
3535 bss_conf->htc_trig_based_pkt_ext =
3536 le32_get_bits(elems->he_operation->he_oper_params,
3537 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
3538 bss_conf->frame_time_rts_th =
3539 le32_get_bits(elems->he_operation->he_oper_params,
3540 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3542 bss_conf->uora_exists = !!elems->uora_element;
3543 if (elems->uora_element)
3544 bss_conf->uora_ocw_range = elems->uora_element[0];
3546 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
3547 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
3548 /* TODO: OPEN: what happens if BSS color disable is set? */
3551 if (cbss->transmitted_bss) {
3552 bss_conf->nontransmitted = true;
3553 ether_addr_copy(bss_conf->transmitter_bssid,
3554 cbss->transmitted_bss->bssid);
3555 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3556 bss_conf->bssid_index = cbss->bssid_index;
3558 bss_conf->nontransmitted = false;
3559 memset(bss_conf->transmitter_bssid, 0,
3560 sizeof(bss_conf->transmitter_bssid));
3561 bss_conf->bssid_indicator = 0;
3562 bss_conf->bssid_index = 0;
3566 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
3567 * in their association response, so ignore that data for our own
3568 * configuration. If it changed since the last beacon, we'll get the
3569 * next beacon and update then.
3573 * If an operating mode notification IE is present, override the
3574 * NSS calculation (that would be done in rate_control_rate_init())
3575 * and use the # of streams from that element.
3577 if (elems->opmode_notif &&
3578 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
3581 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3582 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3584 sta->sta.rx_nss = nss;
3587 rate_control_rate_init(sta);
3589 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
3590 set_sta_flag(sta, WLAN_STA_MFP);
3591 sta->sta.mfp = true;
3593 sta->sta.mfp = false;
3596 sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
3597 local->hw.queues >= IEEE80211_NUM_ACS;
3599 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
3600 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3601 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3604 "failed to move station %pM to desired state\n",
3606 WARN_ON(__sta_info_destroy(sta));
3607 mutex_unlock(&sdata->local->sta_mtx);
3612 if (sdata->wdev.use_4addr)
3613 drv_sta_set_4addr(local, sdata, &sta->sta, true);
3615 mutex_unlock(&sdata->local->sta_mtx);
3618 * Always handle WMM once after association regardless
3619 * of the first value the AP uses. Setting -1 here has
3620 * that effect because the AP values is an unsigned
3623 ifmgd->wmm_last_param_set = -1;
3624 ifmgd->mu_edca_last_param_set = -1;
3626 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
3627 ieee80211_set_wmm_default(sdata, false, false);
3628 } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
3629 elems->wmm_param_len,
3630 elems->mu_edca_param_set)) {
3631 /* still enable QoS since we might have HT/VHT */
3632 ieee80211_set_wmm_default(sdata, false, true);
3633 /* set the disable-WMM flag in this case to disable
3634 * tracking WMM parameter changes in the beacon if
3635 * the parameters weren't actually valid. Doing so
3636 * avoids changing parameters very strangely when
3637 * the AP is going back and forth between valid and
3638 * invalid parameters.
3640 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3642 changed |= BSS_CHANGED_QOS;
3644 if (elems->max_idle_period_ie) {
3645 bss_conf->max_idle_period =
3646 le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
3647 bss_conf->protected_keep_alive =
3648 !!(elems->max_idle_period_ie->idle_options &
3649 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3650 changed |= BSS_CHANGED_KEEP_ALIVE;
3652 bss_conf->max_idle_period = 0;
3653 bss_conf->protected_keep_alive = false;
3656 /* set assoc capability (AID was already set earlier),
3657 * ieee80211_set_associated() will tell the driver */
3658 bss_conf->assoc_capability = capab_info;
3659 ieee80211_set_associated(sdata, cbss, changed);
3662 * If we're using 4-addr mode, let the AP know that we're
3663 * doing so, so that it can create the STA VLAN on its side
3665 if (ifmgd->use_4addr)
3666 ieee80211_send_4addr_nullfunc(local, sdata);
3669 * Start timer to probe the connection to the AP now.
3670 * Also start the timer that will detect beacon loss.
3672 ieee80211_sta_reset_beacon_monitor(sdata);
3673 ieee80211_sta_reset_conn_monitor(sdata);
3682 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3683 struct ieee80211_mgmt *mgmt,
3686 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3687 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3688 u16 capab_info, status_code, aid;
3689 struct ieee802_11_elems *elems;
3690 int ac, uapsd_queues = -1;
3693 struct cfg80211_bss *cbss;
3694 struct ieee80211_event event = {
3696 .u.mlme.data = ASSOC_EVENT,
3698 struct ieee80211_prep_tx_info info = {};
3700 sdata_assert_lock(sdata);
3705 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
3708 cbss = assoc_data->bss;
3711 * AssocResp and ReassocResp have identical structure, so process both
3712 * of them in this function.
3718 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
3719 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3720 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3721 pos = mgmt->u.assoc_resp.variable;
3722 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3723 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
3724 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3729 * Note: this may not be perfect, AP might misbehave - if
3730 * anyone needs to rely on perfect complete notification
3731 * with the exact right subtype, then we need to track what
3732 * we actually transmitted.
3734 info.subtype = reassoc ? IEEE80211_STYPE_REASSOC_REQ :
3735 IEEE80211_STYPE_ASSOC_REQ;
3738 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3739 reassoc ? "Rea" : "A", mgmt->sa,
3740 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
3742 if (assoc_data->fils_kek_len &&
3743 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3746 elems = ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false,
3747 mgmt->bssid, assoc_data->bss->bssid);
3751 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
3752 elems->timeout_int &&
3753 elems->timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
3755 tu = le32_to_cpu(elems->timeout_int->value);
3756 ms = tu * 1024 / 1000;
3758 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3760 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
3761 assoc_data->timeout_started = true;
3762 if (ms > IEEE80211_ASSOC_TIMEOUT)
3763 run_again(sdata, assoc_data->timeout);
3767 if (status_code != WLAN_STATUS_SUCCESS) {
3768 sdata_info(sdata, "%pM denied association (code=%d)\n",
3769 mgmt->sa, status_code);
3770 ieee80211_destroy_assoc_data(sdata, false, false);
3771 event.u.mlme.status = MLME_DENIED;
3772 event.u.mlme.reason = status_code;
3773 drv_event_callback(sdata->local, sdata, &event);
3775 if (!ieee80211_assoc_success(sdata, cbss, mgmt, len, elems)) {
3776 /* oops -- internal error -- send timeout for now */
3777 ieee80211_destroy_assoc_data(sdata, false, false);
3778 cfg80211_assoc_timeout(sdata->dev, cbss);
3781 event.u.mlme.status = MLME_SUCCESS;
3782 drv_event_callback(sdata->local, sdata, &event);
3783 sdata_info(sdata, "associated\n");
3786 * destroy assoc_data afterwards, as otherwise an idle
3787 * recalc after assoc_data is NULL but before associated
3788 * is set can cause the interface to go idle
3790 ieee80211_destroy_assoc_data(sdata, true, false);
3792 /* get uapsd queues configuration */
3794 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3795 if (sdata->tx_conf[ac].uapsd)
3796 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
3801 cfg80211_rx_assoc_resp(sdata->dev, cbss, (u8 *)mgmt, len, uapsd_queues,
3802 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
3804 drv_mgd_complete_tx(sdata->local, sdata, &info);
3808 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
3809 struct ieee80211_mgmt *mgmt, size_t len,
3810 struct ieee80211_rx_status *rx_status)
3812 struct ieee80211_local *local = sdata->local;
3813 struct ieee80211_bss *bss;
3814 struct ieee80211_channel *channel;
3816 sdata_assert_lock(sdata);
3818 channel = ieee80211_get_channel_khz(local->hw.wiphy,
3819 ieee80211_rx_status_to_khz(rx_status));
3823 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
3825 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
3826 ieee80211_rx_bss_put(local, bss);
3831 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
3832 struct sk_buff *skb)
3834 struct ieee80211_mgmt *mgmt = (void *)skb->data;
3835 struct ieee80211_if_managed *ifmgd;
3836 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3837 struct ieee80211_channel *channel;
3838 size_t baselen, len = skb->len;
3840 ifmgd = &sdata->u.mgd;
3842 sdata_assert_lock(sdata);
3845 * According to Draft P802.11ax D6.0 clause 26.17.2.3.2:
3846 * "If a 6 GHz AP receives a Probe Request frame and responds with
3847 * a Probe Response frame [..], the Address 1 field of the Probe
3848 * Response frame shall be set to the broadcast address [..]"
3849 * So, on 6GHz band we should also accept broadcast responses.
3851 channel = ieee80211_get_channel(sdata->local->hw.wiphy,
3856 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
3857 (channel->band != NL80211_BAND_6GHZ ||
3858 !is_broadcast_ether_addr(mgmt->da)))
3859 return; /* ignore ProbeResp to foreign address */
3861 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3865 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3867 if (ifmgd->associated &&
3868 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3869 ieee80211_reset_ap_probe(sdata);
3873 * This is the canonical list of information elements we care about,
3874 * the filter code also gives us all changes to the Microsoft OUI
3875 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3876 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3877 * changes to requested client power.
3879 * We implement beacon filtering in software since that means we can
3880 * avoid processing the frame here and in cfg80211, and userspace
3881 * will not be able to tell whether the hardware supports it or not.
3883 * XXX: This list needs to be dynamic -- userspace needs to be able to
3884 * add items it requires. It also needs to be able to tell us to
3885 * look out for other vendor IEs.
3887 static const u64 care_about_ies =
3888 (1ULL << WLAN_EID_COUNTRY) |
3889 (1ULL << WLAN_EID_ERP_INFO) |
3890 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3891 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3892 (1ULL << WLAN_EID_HT_CAPABILITY) |
3893 (1ULL << WLAN_EID_HT_OPERATION) |
3894 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
3896 static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3897 struct ieee80211_if_managed *ifmgd,
3898 struct ieee80211_bss_conf *bss_conf,
3899 struct ieee80211_local *local,
3900 struct ieee80211_rx_status *rx_status)
3902 /* Track average RSSI from the Beacon frames of the current AP */
3904 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3905 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3906 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
3907 ifmgd->last_cqm_event_signal = 0;
3908 ifmgd->count_beacon_signal = 1;
3909 ifmgd->last_ave_beacon_signal = 0;
3911 ifmgd->count_beacon_signal++;
3914 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3916 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3917 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3918 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3919 int last_sig = ifmgd->last_ave_beacon_signal;
3920 struct ieee80211_event event = {
3925 * if signal crosses either of the boundaries, invoke callback
3926 * with appropriate parameters
3928 if (sig > ifmgd->rssi_max_thold &&
3929 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3930 ifmgd->last_ave_beacon_signal = sig;
3931 event.u.rssi.data = RSSI_EVENT_HIGH;
3932 drv_event_callback(local, sdata, &event);
3933 } else if (sig < ifmgd->rssi_min_thold &&
3934 (last_sig >= ifmgd->rssi_max_thold ||
3936 ifmgd->last_ave_beacon_signal = sig;
3937 event.u.rssi.data = RSSI_EVENT_LOW;
3938 drv_event_callback(local, sdata, &event);
3942 if (bss_conf->cqm_rssi_thold &&
3943 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
3944 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
3945 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3946 int last_event = ifmgd->last_cqm_event_signal;
3947 int thold = bss_conf->cqm_rssi_thold;
3948 int hyst = bss_conf->cqm_rssi_hyst;
3951 (last_event == 0 || sig < last_event - hyst)) {
3952 ifmgd->last_cqm_event_signal = sig;
3953 ieee80211_cqm_rssi_notify(
3955 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3957 } else if (sig > thold &&
3958 (last_event == 0 || sig > last_event + hyst)) {
3959 ifmgd->last_cqm_event_signal = sig;
3960 ieee80211_cqm_rssi_notify(
3962 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3967 if (bss_conf->cqm_rssi_low &&
3968 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3969 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3970 int last_event = ifmgd->last_cqm_event_signal;
3971 int low = bss_conf->cqm_rssi_low;
3972 int high = bss_conf->cqm_rssi_high;
3975 (last_event == 0 || last_event >= low)) {
3976 ifmgd->last_cqm_event_signal = sig;
3977 ieee80211_cqm_rssi_notify(
3979 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3981 } else if (sig > high &&
3982 (last_event == 0 || last_event <= high)) {
3983 ifmgd->last_cqm_event_signal = sig;
3984 ieee80211_cqm_rssi_notify(
3986 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3992 static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
3993 struct cfg80211_bss *bss)
3995 if (ether_addr_equal(tx_bssid, bss->bssid))
3997 if (!bss->transmitted_bss)
3999 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
4002 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
4003 struct ieee80211_hdr *hdr, size_t len,
4004 struct ieee80211_rx_status *rx_status)
4006 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4007 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
4008 struct ieee80211_mgmt *mgmt = (void *) hdr;
4010 struct ieee802_11_elems *elems;
4011 struct ieee80211_local *local = sdata->local;
4012 struct ieee80211_chanctx_conf *chanctx_conf;
4013 struct ieee80211_channel *chan;
4014 struct sta_info *sta;
4019 u8 *bssid, *variable = mgmt->u.beacon.variable;
4020 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
4022 sdata_assert_lock(sdata);
4024 /* Process beacon from the current BSS */
4025 bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type);
4026 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
4027 struct ieee80211_ext *ext = (void *) mgmt;
4029 if (ieee80211_is_s1g_short_beacon(ext->frame_control))
4030 variable = ext->u.s1g_short_beacon.variable;
4032 variable = ext->u.s1g_beacon.variable;
4035 baselen = (u8 *) variable - (u8 *) mgmt;
4040 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4041 if (!chanctx_conf) {
4046 if (ieee80211_rx_status_to_khz(rx_status) !=
4047 ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
4051 chan = chanctx_conf->def.chan;
4054 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
4055 ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->bss)) {
4056 elems = ieee802_11_parse_elems(variable, len - baselen, false,
4058 ifmgd->assoc_data->bss->bssid);
4062 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4064 if (elems->dtim_period)
4065 ifmgd->dtim_period = elems->dtim_period;
4066 ifmgd->have_beacon = true;
4067 ifmgd->assoc_data->need_beacon = false;
4068 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
4069 sdata->vif.bss_conf.sync_tsf =
4070 le64_to_cpu(mgmt->u.beacon.timestamp);
4071 sdata->vif.bss_conf.sync_device_ts =
4072 rx_status->device_timestamp;
4073 sdata->vif.bss_conf.sync_dtim_count = elems->dtim_count;
4076 if (elems->mbssid_config_ie)
4077 bss_conf->profile_periodicity =
4078 elems->mbssid_config_ie->profile_periodicity;
4080 bss_conf->profile_periodicity = 0;
4082 if (elems->ext_capab_len >= 11 &&
4083 (elems->ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
4084 bss_conf->ema_ap = true;
4086 bss_conf->ema_ap = false;
4088 /* continue assoc process */
4089 ifmgd->assoc_data->timeout = jiffies;
4090 ifmgd->assoc_data->timeout_started = true;
4091 run_again(sdata, ifmgd->assoc_data->timeout);
4096 if (!ifmgd->associated ||
4097 !ieee80211_rx_our_beacon(bssid, ifmgd->associated))
4099 bssid = ifmgd->associated->bssid;
4101 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
4102 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
4105 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
4106 mlme_dbg_ratelimited(sdata,
4107 "cancelling AP probe due to a received beacon\n");
4108 ieee80211_reset_ap_probe(sdata);
4112 * Push the beacon loss detection into the future since
4113 * we are processing a beacon from the AP just now.
4115 ieee80211_sta_reset_beacon_monitor(sdata);
4117 /* TODO: CRC urrently not calculated on S1G Beacon Compatibility
4118 * element (which carries the beacon interval). Don't forget to add a
4119 * bit to care_about_ies[] above if mac80211 is interested in a
4120 * changing S1G element.
4122 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4123 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
4124 elems = ieee802_11_parse_elems_crc(variable, len - baselen,
4125 false, care_about_ies, ncrc,
4126 mgmt->bssid, bssid);
4131 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
4132 ieee80211_check_tim(elems->tim, elems->tim_len, bss_conf->aid)) {
4133 if (local->hw.conf.dynamic_ps_timeout > 0) {
4134 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
4135 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
4136 ieee80211_hw_config(local,
4137 IEEE80211_CONF_CHANGE_PS);
4139 ieee80211_send_nullfunc(local, sdata, false);
4140 } else if (!local->pspolling && sdata->u.mgd.powersave) {
4141 local->pspolling = true;
4144 * Here is assumed that the driver will be
4145 * able to send ps-poll frame and receive a
4146 * response even though power save mode is
4147 * enabled, but some drivers might require
4148 * to disable power save here. This needs
4149 * to be investigated.
4151 ieee80211_send_pspoll(local, sdata);
4155 if (sdata->vif.p2p ||
4156 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
4157 struct ieee80211_p2p_noa_attr noa = {};
4160 ret = cfg80211_get_p2p_attr(variable,
4162 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
4163 (u8 *) &noa, sizeof(noa));
4165 if (sdata->u.mgd.p2p_noa_index != noa.index) {
4166 /* valid noa_attr and index changed */
4167 sdata->u.mgd.p2p_noa_index = noa.index;
4168 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
4169 changed |= BSS_CHANGED_P2P_PS;
4171 * make sure we update all information, the CRC
4172 * mechanism doesn't look at P2P attributes.
4174 ifmgd->beacon_crc_valid = false;
4176 } else if (sdata->u.mgd.p2p_noa_index != -1) {
4177 /* noa_attr not found and we had valid noa_attr before */
4178 sdata->u.mgd.p2p_noa_index = -1;
4179 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
4180 changed |= BSS_CHANGED_P2P_PS;
4181 ifmgd->beacon_crc_valid = false;
4185 if (ifmgd->csa_waiting_bcn)
4186 ieee80211_chswitch_post_beacon(sdata);
4189 * Update beacon timing and dtim count on every beacon appearance. This
4190 * will allow the driver to use the most updated values. Do it before
4191 * comparing this one with last received beacon.
4192 * IMPORTANT: These parameters would possibly be out of sync by the time
4193 * the driver will use them. The synchronized view is currently
4194 * guaranteed only in certain callbacks.
4196 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
4197 !ieee80211_is_s1g_beacon(hdr->frame_control)) {
4198 sdata->vif.bss_conf.sync_tsf =
4199 le64_to_cpu(mgmt->u.beacon.timestamp);
4200 sdata->vif.bss_conf.sync_device_ts =
4201 rx_status->device_timestamp;
4202 sdata->vif.bss_conf.sync_dtim_count = elems->dtim_count;
4205 if ((ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) ||
4206 ieee80211_is_s1g_short_beacon(mgmt->frame_control))
4208 ifmgd->beacon_crc = ncrc;
4209 ifmgd->beacon_crc_valid = true;
4211 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4213 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
4214 rx_status->device_timestamp,
4217 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
4218 ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
4219 elems->wmm_param_len,
4220 elems->mu_edca_param_set))
4221 changed |= BSS_CHANGED_QOS;
4224 * If we haven't had a beacon before, tell the driver about the
4225 * DTIM period (and beacon timing if desired) now.
4227 if (!ifmgd->have_beacon) {
4228 /* a few bogus AP send dtim_period = 0 or no TIM IE */
4229 bss_conf->dtim_period = elems->dtim_period ?: 1;
4231 changed |= BSS_CHANGED_BEACON_INFO;
4232 ifmgd->have_beacon = true;
4234 mutex_lock(&local->iflist_mtx);
4235 ieee80211_recalc_ps(local);
4236 mutex_unlock(&local->iflist_mtx);
4238 ieee80211_recalc_ps_vif(sdata);
4241 if (elems->erp_info) {
4243 erp_value = elems->erp_info[0];
4248 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4249 changed |= ieee80211_handle_bss_capability(sdata,
4250 le16_to_cpu(mgmt->u.beacon.capab_info),
4251 erp_valid, erp_value);
4253 mutex_lock(&local->sta_mtx);
4254 sta = sta_info_get(sdata, bssid);
4256 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
4258 if (ieee80211_config_bw(sdata, sta, elems->ht_cap_elem,
4259 elems->vht_cap_elem, elems->ht_operation,
4260 elems->vht_operation, elems->he_operation,
4261 elems->s1g_oper, bssid, &changed)) {
4262 mutex_unlock(&local->sta_mtx);
4264 "failed to follow AP %pM bandwidth change, disconnect\n",
4266 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4267 WLAN_REASON_DEAUTH_LEAVING,
4269 ieee80211_report_disconnect(sdata, deauth_buf,
4270 sizeof(deauth_buf), true,
4271 WLAN_REASON_DEAUTH_LEAVING,
4276 if (sta && elems->opmode_notif)
4277 ieee80211_vht_handle_opmode(sdata, sta, *elems->opmode_notif,
4279 mutex_unlock(&local->sta_mtx);
4281 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4282 elems->country_elem,
4283 elems->country_elem_len,
4284 elems->pwr_constr_elem,
4285 elems->cisco_dtpc_elem);
4287 ieee80211_bss_info_change_notify(sdata, changed);
4292 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
4293 struct sk_buff *skb)
4295 struct ieee80211_rx_status *rx_status;
4296 struct ieee80211_hdr *hdr;
4299 rx_status = (struct ieee80211_rx_status *) skb->cb;
4300 hdr = (struct ieee80211_hdr *) skb->data;
4301 fc = le16_to_cpu(hdr->frame_control);
4304 switch (fc & IEEE80211_FCTL_STYPE) {
4305 case IEEE80211_STYPE_S1G_BEACON:
4306 ieee80211_rx_mgmt_beacon(sdata, hdr, skb->len, rx_status);
4309 sdata_unlock(sdata);
4312 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4313 struct sk_buff *skb)
4315 struct ieee80211_rx_status *rx_status;
4316 struct ieee80211_mgmt *mgmt;
4320 rx_status = (struct ieee80211_rx_status *) skb->cb;
4321 mgmt = (struct ieee80211_mgmt *) skb->data;
4322 fc = le16_to_cpu(mgmt->frame_control);
4326 switch (fc & IEEE80211_FCTL_STYPE) {
4327 case IEEE80211_STYPE_BEACON:
4328 ieee80211_rx_mgmt_beacon(sdata, (void *)mgmt,
4329 skb->len, rx_status);
4331 case IEEE80211_STYPE_PROBE_RESP:
4332 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4334 case IEEE80211_STYPE_AUTH:
4335 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
4337 case IEEE80211_STYPE_DEAUTH:
4338 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
4340 case IEEE80211_STYPE_DISASSOC:
4341 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
4343 case IEEE80211_STYPE_ASSOC_RESP:
4344 case IEEE80211_STYPE_REASSOC_RESP:
4345 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
4347 case IEEE80211_STYPE_ACTION:
4348 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
4349 struct ieee802_11_elems *elems;
4351 ies_len = skb->len -
4352 offsetof(struct ieee80211_mgmt,
4353 u.action.u.chan_switch.variable);
4358 /* CSA IE cannot be overridden, no need for BSSID */
4359 elems = ieee802_11_parse_elems(
4360 mgmt->u.action.u.chan_switch.variable,
4361 ies_len, true, mgmt->bssid, NULL);
4363 if (elems && !elems->parse_error)
4364 ieee80211_sta_process_chanswitch(sdata,
4366 rx_status->device_timestamp,
4369 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4370 struct ieee802_11_elems *elems;
4372 ies_len = skb->len -
4373 offsetof(struct ieee80211_mgmt,
4374 u.action.u.ext_chan_switch.variable);
4380 * extended CSA IE can't be overridden, no need for
4383 elems = ieee802_11_parse_elems(
4384 mgmt->u.action.u.ext_chan_switch.variable,
4385 ies_len, true, mgmt->bssid, NULL);
4387 if (elems && !elems->parse_error) {
4388 /* for the handling code pretend it was an IE */
4389 elems->ext_chansw_ie =
4390 &mgmt->u.action.u.ext_chan_switch.data;
4392 ieee80211_sta_process_chanswitch(sdata,
4394 rx_status->device_timestamp,
4402 sdata_unlock(sdata);
4405 static void ieee80211_sta_timer(struct timer_list *t)
4407 struct ieee80211_sub_if_data *sdata =
4408 from_timer(sdata, t, u.mgd.timer);
4410 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
4413 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
4414 u8 *bssid, u8 reason, bool tx)
4416 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4418 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
4421 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4425 static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
4427 struct ieee80211_local *local = sdata->local;
4428 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4429 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
4433 struct ieee80211_prep_tx_info info = {
4434 .subtype = IEEE80211_STYPE_AUTH,
4437 sdata_assert_lock(sdata);
4439 if (WARN_ON_ONCE(!auth_data))
4444 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
4445 sdata_info(sdata, "authentication with %pM timed out\n",
4446 auth_data->bss->bssid);
4449 * Most likely AP is not in the range so remove the
4450 * bss struct for that AP.
4452 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4457 if (auth_data->algorithm == WLAN_AUTH_SAE)
4458 info.duration = jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4460 drv_mgd_prepare_tx(local, sdata, &info);
4462 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4463 auth_data->bss->bssid, auth_data->tries,
4464 IEEE80211_AUTH_MAX_TRIES);
4466 auth_data->expected_transaction = 2;
4468 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4469 trans = auth_data->sae_trans;
4470 status = auth_data->sae_status;
4471 auth_data->expected_transaction = trans;
4474 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4475 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4476 IEEE80211_TX_INTFL_MLME_CONN_TX;
4478 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4479 auth_data->data, auth_data->data_len,
4480 auth_data->bss->bssid,
4481 auth_data->bss->bssid, NULL, 0, 0,
4484 if (tx_flags == 0) {
4485 if (auth_data->algorithm == WLAN_AUTH_SAE)
4486 auth_data->timeout = jiffies +
4487 IEEE80211_AUTH_TIMEOUT_SAE;
4489 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
4491 auth_data->timeout =
4492 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
4495 auth_data->timeout_started = true;
4496 run_again(sdata, auth_data->timeout);
4501 static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4503 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4504 struct ieee80211_local *local = sdata->local;
4507 sdata_assert_lock(sdata);
4509 assoc_data->tries++;
4510 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
4511 sdata_info(sdata, "association with %pM timed out\n",
4512 assoc_data->bss->bssid);
4515 * Most likely AP is not in the range so remove the
4516 * bss struct for that AP.
4518 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4523 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4524 assoc_data->bss->bssid, assoc_data->tries,
4525 IEEE80211_ASSOC_MAX_TRIES);
4526 ret = ieee80211_send_assoc(sdata);
4530 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4531 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
4532 assoc_data->timeout_started = true;
4533 run_again(sdata, assoc_data->timeout);
4535 assoc_data->timeout =
4536 round_jiffies_up(jiffies +
4537 IEEE80211_ASSOC_TIMEOUT_LONG);
4538 assoc_data->timeout_started = true;
4539 run_again(sdata, assoc_data->timeout);
4545 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4546 __le16 fc, bool acked)
4548 struct ieee80211_local *local = sdata->local;
4550 sdata->u.mgd.status_fc = fc;
4551 sdata->u.mgd.status_acked = acked;
4552 sdata->u.mgd.status_received = true;
4554 ieee80211_queue_work(&local->hw, &sdata->work);
4557 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
4559 struct ieee80211_local *local = sdata->local;
4560 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4564 if (ifmgd->status_received) {
4565 __le16 fc = ifmgd->status_fc;
4566 bool status_acked = ifmgd->status_acked;
4568 ifmgd->status_received = false;
4569 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
4571 if (ifmgd->auth_data->algorithm ==
4573 ifmgd->auth_data->timeout =
4575 IEEE80211_AUTH_TIMEOUT_SAE;
4577 ifmgd->auth_data->timeout =
4579 IEEE80211_AUTH_TIMEOUT_SHORT;
4580 run_again(sdata, ifmgd->auth_data->timeout);
4582 ifmgd->auth_data->timeout = jiffies - 1;
4584 ifmgd->auth_data->timeout_started = true;
4585 } else if (ifmgd->assoc_data &&
4586 (ieee80211_is_assoc_req(fc) ||
4587 ieee80211_is_reassoc_req(fc))) {
4589 ifmgd->assoc_data->timeout =
4590 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
4591 run_again(sdata, ifmgd->assoc_data->timeout);
4593 ifmgd->assoc_data->timeout = jiffies - 1;
4595 ifmgd->assoc_data->timeout_started = true;
4599 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
4600 time_after(jiffies, ifmgd->auth_data->timeout)) {
4601 if (ifmgd->auth_data->done || ifmgd->auth_data->waiting) {
4603 * ok ... we waited for assoc or continuation but
4604 * userspace didn't do it, so kill the auth data
4606 ieee80211_destroy_auth_data(sdata, false);
4607 } else if (ieee80211_auth(sdata)) {
4609 struct ieee80211_event event = {
4611 .u.mlme.data = AUTH_EVENT,
4612 .u.mlme.status = MLME_TIMEOUT,
4615 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4617 ieee80211_destroy_auth_data(sdata, false);
4619 cfg80211_auth_timeout(sdata->dev, bssid);
4620 drv_event_callback(sdata->local, sdata, &event);
4622 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
4623 run_again(sdata, ifmgd->auth_data->timeout);
4625 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
4626 time_after(jiffies, ifmgd->assoc_data->timeout)) {
4627 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
4628 ieee80211_do_assoc(sdata)) {
4629 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
4630 struct ieee80211_event event = {
4632 .u.mlme.data = ASSOC_EVENT,
4633 .u.mlme.status = MLME_TIMEOUT,
4636 ieee80211_destroy_assoc_data(sdata, false, false);
4637 cfg80211_assoc_timeout(sdata->dev, bss);
4638 drv_event_callback(sdata->local, sdata, &event);
4640 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
4641 run_again(sdata, ifmgd->assoc_data->timeout);
4643 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
4644 ifmgd->associated) {
4648 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4650 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4651 max_tries = max_nullfunc_tries;
4653 max_tries = max_probe_tries;
4655 /* ACK received for nullfunc probing frame */
4656 if (!ifmgd->probe_send_count)
4657 ieee80211_reset_ap_probe(sdata);
4658 else if (ifmgd->nullfunc_failed) {
4659 if (ifmgd->probe_send_count < max_tries) {
4661 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4662 bssid, ifmgd->probe_send_count,
4664 ieee80211_mgd_probe_ap_send(sdata);
4667 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4669 ieee80211_sta_connection_lost(sdata, bssid,
4670 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4673 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
4674 run_again(sdata, ifmgd->probe_timeout);
4675 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4677 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4678 bssid, probe_wait_ms);
4679 ieee80211_sta_connection_lost(sdata, bssid,
4680 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4681 } else if (ifmgd->probe_send_count < max_tries) {
4683 "No probe response from AP %pM after %dms, try %d/%i\n",
4684 bssid, probe_wait_ms,
4685 ifmgd->probe_send_count, max_tries);
4686 ieee80211_mgd_probe_ap_send(sdata);
4689 * We actually lost the connection ... or did we?
4693 "No probe response from AP %pM after %dms, disconnecting.\n",
4694 bssid, probe_wait_ms);
4696 ieee80211_sta_connection_lost(sdata, bssid,
4697 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4701 sdata_unlock(sdata);
4704 static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
4706 struct ieee80211_sub_if_data *sdata =
4707 from_timer(sdata, t, u.mgd.bcn_mon_timer);
4708 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4710 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4713 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
4716 sdata->u.mgd.connection_loss = false;
4717 ieee80211_queue_work(&sdata->local->hw,
4718 &sdata->u.mgd.beacon_connection_loss_work);
4721 static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
4723 struct ieee80211_sub_if_data *sdata =
4724 from_timer(sdata, t, u.mgd.conn_mon_timer);
4725 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4726 struct ieee80211_local *local = sdata->local;
4727 struct sta_info *sta;
4728 unsigned long timeout;
4730 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4733 sta = sta_info_get(sdata, ifmgd->bssid);
4737 timeout = sta->status_stats.last_ack;
4738 if (time_before(sta->status_stats.last_ack, sta->rx_stats.last_rx))
4739 timeout = sta->rx_stats.last_rx;
4740 timeout += IEEE80211_CONNECTION_IDLE_TIME;
4742 /* If timeout is after now, then update timer to fire at
4743 * the later date, but do not actually probe at this time.
4745 if (time_is_after_jiffies(timeout)) {
4746 mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
4750 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
4753 static void ieee80211_sta_monitor_work(struct work_struct *work)
4755 struct ieee80211_sub_if_data *sdata =
4756 container_of(work, struct ieee80211_sub_if_data,
4757 u.mgd.monitor_work);
4759 ieee80211_mgd_probe_ap(sdata, false);
4762 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4764 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
4765 __ieee80211_stop_poll(sdata);
4767 /* let's probe the connection once */
4768 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
4769 ieee80211_queue_work(&sdata->local->hw,
4770 &sdata->u.mgd.monitor_work);
4775 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4777 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4778 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4782 if (ifmgd->auth_data || ifmgd->assoc_data) {
4783 const u8 *bssid = ifmgd->auth_data ?
4784 ifmgd->auth_data->bss->bssid :
4785 ifmgd->assoc_data->bss->bssid;
4788 * If we are trying to authenticate / associate while suspending,
4789 * cfg80211 won't know and won't actually abort those attempts,
4790 * thus we need to do that ourselves.
4792 ieee80211_send_deauth_disassoc(sdata, bssid, bssid,
4793 IEEE80211_STYPE_DEAUTH,
4794 WLAN_REASON_DEAUTH_LEAVING,
4796 if (ifmgd->assoc_data)
4797 ieee80211_destroy_assoc_data(sdata, false, true);
4798 if (ifmgd->auth_data)
4799 ieee80211_destroy_auth_data(sdata, false);
4800 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4801 IEEE80211_DEAUTH_FRAME_LEN,
4805 /* This is a bit of a hack - we should find a better and more generic
4806 * solution to this. Normally when suspending, cfg80211 will in fact
4807 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4808 * auth (not so important) or assoc (this is the problem) process.
4810 * As a consequence, it can happen that we are in the process of both
4811 * associating and suspending, and receive an association response
4812 * after cfg80211 has checked if it needs to disconnect, but before
4813 * we actually set the flag to drop incoming frames. This will then
4814 * cause the workqueue flush to process the association response in
4815 * the suspend, resulting in a successful association just before it
4816 * tries to remove the interface from the driver, which now though
4817 * has a channel context assigned ... this results in issues.
4819 * To work around this (for now) simply deauth here again if we're
4822 if (ifmgd->associated && !sdata->local->wowlan) {
4824 struct cfg80211_deauth_request req = {
4825 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4829 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4830 ieee80211_mgd_deauth(sdata, &req);
4833 sdata_unlock(sdata);
4836 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4838 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4841 if (!ifmgd->associated) {
4842 sdata_unlock(sdata);
4846 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4847 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4848 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4849 ieee80211_sta_connection_lost(sdata,
4850 ifmgd->associated->bssid,
4851 WLAN_REASON_UNSPECIFIED,
4853 sdata_unlock(sdata);
4856 sdata_unlock(sdata);
4860 /* interface setup */
4861 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
4863 struct ieee80211_if_managed *ifmgd;
4865 ifmgd = &sdata->u.mgd;
4866 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
4867 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
4868 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4869 ieee80211_beacon_connection_loss_work);
4870 INIT_WORK(&ifmgd->csa_connection_drop_work,
4871 ieee80211_csa_connection_drop_work);
4872 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
4873 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4874 ieee80211_tdls_peer_del_work);
4875 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4876 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4877 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4878 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
4879 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4880 ieee80211_sta_handle_tspec_ac_params_wk);
4883 ifmgd->powersave = sdata->wdev.ps;
4884 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4885 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
4886 ifmgd->p2p_noa_index = -1;
4888 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
4889 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4891 ifmgd->req_smps = IEEE80211_SMPS_OFF;
4893 /* Setup TDLS data */
4894 spin_lock_init(&ifmgd->teardown_lock);
4895 ifmgd->teardown_skb = NULL;
4896 ifmgd->orig_teardown_skb = NULL;
4899 /* scan finished notification */
4900 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
4902 struct ieee80211_sub_if_data *sdata;
4904 /* Restart STA timers */
4906 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4907 if (ieee80211_sdata_running(sdata))
4908 ieee80211_restart_sta_timer(sdata);
4913 static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4914 struct cfg80211_bss *cbss)
4916 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4917 const u8 *ht_cap_ie, *vht_cap_ie;
4918 const struct ieee80211_ht_cap *ht_cap;
4919 const struct ieee80211_vht_cap *vht_cap;
4922 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4925 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4926 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4927 ht_cap = (void *)(ht_cap_ie + 2);
4928 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4930 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4931 * "Tx Unequal Modulation Supported" fields.
4935 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4938 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4939 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4943 vht_cap = (void *)(vht_cap_ie + 2);
4944 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4945 for (nss = 8; nss > 0; nss--) {
4946 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4947 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4950 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4951 chains = max(chains, nss);
4958 ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata,
4959 struct ieee80211_supported_band *sband,
4960 const struct ieee80211_he_operation *he_op)
4962 const struct ieee80211_sta_he_cap *sta_he_cap =
4963 ieee80211_get_he_iftype_cap(sband,
4964 ieee80211_vif_type_p2p(&sdata->vif));
4968 if (!sta_he_cap || !he_op)
4971 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4973 /* Need to go over for 80MHz, 160MHz and for 80+80 */
4974 for (i = 0; i < 3; i++) {
4975 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4976 &sta_he_cap->he_mcs_nss_supp;
4977 u16 sta_mcs_map_rx =
4978 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4979 u16 sta_mcs_map_tx =
4980 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4982 bool verified = true;
4985 * For each band there is a maximum of 8 spatial streams
4986 * possible. Each of the sta_mcs_map_* is a 16-bit struct built
4987 * of 2 bits per NSS (1-8), with the values defined in enum
4988 * ieee80211_he_mcs_support. Need to make sure STA TX and RX
4989 * capabilities aren't less than the AP's minimum requirements
4990 * for this HE BSS per SS.
4991 * It is enough to find one such band that meets the reqs.
4993 for (nss = 8; nss > 0; nss--) {
4994 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
4995 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
4996 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
4998 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
5002 * Make sure the HE AP doesn't require MCSs that aren't
5003 * supported by the client
5005 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
5006 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
5007 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
5017 /* If here, STA doesn't meet AP's HE min requirements */
5021 static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
5022 struct cfg80211_bss *cbss)
5024 struct ieee80211_local *local = sdata->local;
5025 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5026 const struct ieee80211_ht_cap *ht_cap = NULL;
5027 const struct ieee80211_ht_operation *ht_oper = NULL;
5028 const struct ieee80211_vht_operation *vht_oper = NULL;
5029 const struct ieee80211_he_operation *he_oper = NULL;
5030 const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
5031 struct ieee80211_supported_band *sband;
5032 struct cfg80211_chan_def chandef;
5033 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
5034 bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
5035 struct ieee80211_bss *bss = (void *)cbss->priv;
5040 sband = local->hw.wiphy->bands[cbss->channel->band];
5042 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
5043 IEEE80211_STA_DISABLE_80P80MHZ |
5044 IEEE80211_STA_DISABLE_160MHZ);
5046 /* disable HT/VHT/HE if we don't support them */
5047 if (!sband->ht_cap.ht_supported && !is_6ghz) {
5048 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5049 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5050 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5053 if (!sband->vht_cap.vht_supported && is_5ghz) {
5054 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5055 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5058 if (!ieee80211_get_he_iftype_cap(sband,
5059 ieee80211_vif_type_p2p(&sdata->vif)))
5060 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5064 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
5065 const u8 *ht_oper_ie, *ht_cap_ie;
5067 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
5068 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
5069 ht_oper = (void *)(ht_oper_ie + 2);
5071 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
5072 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
5073 ht_cap = (void *)(ht_cap_ie + 2);
5076 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5081 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
5082 const u8 *vht_oper_ie, *vht_cap;
5084 vht_oper_ie = ieee80211_bss_get_ie(cbss,
5085 WLAN_EID_VHT_OPERATION);
5086 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
5087 vht_oper = (void *)(vht_oper_ie + 2);
5088 if (vht_oper && !ht_oper) {
5091 "AP advertised VHT without HT, disabling HT/VHT/HE\n");
5092 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5093 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5094 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5097 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
5098 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
5099 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5104 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
5105 const struct cfg80211_bss_ies *ies;
5106 const u8 *he_oper_ie;
5108 ies = rcu_dereference(cbss->ies);
5109 he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
5110 ies->data, ies->len);
5112 he_oper_ie[1] >= ieee80211_he_oper_size(&he_oper_ie[3]))
5113 he_oper = (void *)(he_oper_ie + 3);
5117 if (!ieee80211_verify_sta_he_mcs_support(sdata, sband, he_oper))
5118 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5121 /* Allow VHT if at least one channel on the sband supports 80 MHz */
5123 for (i = 0; i < sband->n_channels; i++) {
5124 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
5125 IEEE80211_CHAN_NO_80MHZ))
5133 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5135 if (sband->band == NL80211_BAND_S1GHZ) {
5136 const u8 *s1g_oper_ie;
5138 s1g_oper_ie = ieee80211_bss_get_ie(cbss,
5139 WLAN_EID_S1G_OPERATION);
5140 if (s1g_oper_ie && s1g_oper_ie[1] >= sizeof(*s1g_oper))
5141 s1g_oper = (void *)(s1g_oper_ie + 2);
5144 "AP missing S1G operation element?\n");
5147 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
5150 ht_oper, vht_oper, he_oper,
5154 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
5159 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
5160 sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
5164 /* will change later if needed */
5165 sdata->smps_mode = IEEE80211_SMPS_OFF;
5167 mutex_lock(&local->mtx);
5169 * If this fails (possibly due to channel context sharing
5170 * on incompatible channels, e.g. 80+80 and 160 sharing the
5171 * same control channel) try to use a smaller bandwidth.
5173 ret = ieee80211_vif_use_channel(sdata, &chandef,
5174 IEEE80211_CHANCTX_SHARED);
5176 /* don't downgrade for 5 and 10 MHz channels, though. */
5177 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
5178 chandef.width == NL80211_CHAN_WIDTH_10)
5181 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
5182 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
5183 ret = ieee80211_vif_use_channel(sdata, &chandef,
5184 IEEE80211_CHANCTX_SHARED);
5187 mutex_unlock(&local->mtx);
5191 static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
5192 u8 *dtim_count, u8 *dtim_period)
5194 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
5195 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
5197 const struct ieee80211_tim_ie *tim = NULL;
5198 const struct ieee80211_bssid_index *idx;
5199 bool valid = tim_ie && tim_ie[1] >= 2;
5202 tim = (void *)(tim_ie + 2);
5205 *dtim_count = valid ? tim->dtim_count : 0;
5208 *dtim_period = valid ? tim->dtim_period : 0;
5210 /* Check if value is overridden by non-transmitted profile */
5211 if (!idx_ie || idx_ie[1] < 3)
5214 idx = (void *)(idx_ie + 2);
5217 *dtim_count = idx->dtim_count;
5220 *dtim_period = idx->dtim_period;
5225 static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
5226 struct cfg80211_bss *cbss, bool assoc,
5229 struct ieee80211_local *local = sdata->local;
5230 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5231 struct ieee80211_bss *bss = (void *)cbss->priv;
5232 struct sta_info *new_sta = NULL;
5233 struct ieee80211_supported_band *sband;
5234 bool have_sta = false;
5237 sband = local->hw.wiphy->bands[cbss->channel->band];
5239 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
5242 /* If a reconfig is happening, bail out */
5243 if (local->in_reconfig)
5248 have_sta = sta_info_get(sdata, cbss->bssid);
5253 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
5259 * Set up the information for the new channel before setting the
5260 * new channel. We can't - completely race-free - change the basic
5261 * rates bitmap and the channel (sband) that it refers to, but if
5262 * we set it up before we at least avoid calling into the driver's
5263 * bss_info_changed() method with invalid information (since we do
5264 * call that from changing the channel - only for IDLE and perhaps
5265 * some others, but ...).
5267 * So to avoid that, just set up all the new information before the
5268 * channel, but tell the driver to apply it only afterwards, since
5269 * it might need the new channel for that.
5272 u32 rates = 0, basic_rates = 0;
5273 bool have_higher_than_11mbit = false;
5274 int min_rate = INT_MAX, min_rate_index = -1;
5275 const struct cfg80211_bss_ies *ies;
5276 int shift = ieee80211_vif_get_shift(&sdata->vif);
5278 /* TODO: S1G Basic Rate Set is expressed elsewhere */
5279 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
5280 ieee80211_s1g_sta_rate_init(new_sta);
5284 ieee80211_get_rates(sband, bss->supp_rates,
5285 bss->supp_rates_len,
5286 &rates, &basic_rates,
5287 &have_higher_than_11mbit,
5288 &min_rate, &min_rate_index,
5292 * This used to be a workaround for basic rates missing
5293 * in the association response frame. Now that we no
5294 * longer use the basic rates from there, it probably
5295 * doesn't happen any more, but keep the workaround so
5296 * in case some *other* APs are buggy in different ways
5297 * we can connect -- with a warning.
5298 * Allow this workaround only in case the AP provided at least
5301 if (min_rate_index < 0) {
5303 "No legacy rates in association response\n");
5305 sta_info_free(local, new_sta);
5307 } else if (!basic_rates) {
5309 "No basic rates, using min rate instead\n");
5310 basic_rates = BIT(min_rate_index);
5314 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5317 "No rates found, keeping mandatory only\n");
5319 sdata->vif.bss_conf.basic_rates = basic_rates;
5321 /* cf. IEEE 802.11 9.2.12 */
5322 if (cbss->channel->band == NL80211_BAND_2GHZ &&
5323 have_higher_than_11mbit)
5324 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
5326 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
5329 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
5331 /* set timing information */
5332 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
5334 ies = rcu_dereference(cbss->beacon_ies);
5336 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5337 sdata->vif.bss_conf.sync_device_ts =
5338 bss->device_ts_beacon;
5340 ieee80211_get_dtim(ies,
5341 &sdata->vif.bss_conf.sync_dtim_count,
5343 } else if (!ieee80211_hw_check(&sdata->local->hw,
5344 TIMING_BEACON_ONLY)) {
5345 ies = rcu_dereference(cbss->proberesp_ies);
5346 /* must be non-NULL since beacon IEs were NULL */
5347 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5348 sdata->vif.bss_conf.sync_device_ts =
5349 bss->device_ts_presp;
5350 sdata->vif.bss_conf.sync_dtim_count = 0;
5352 sdata->vif.bss_conf.sync_tsf = 0;
5353 sdata->vif.bss_conf.sync_device_ts = 0;
5354 sdata->vif.bss_conf.sync_dtim_count = 0;
5359 if (new_sta || override) {
5360 err = ieee80211_prep_channel(sdata, cbss);
5363 sta_info_free(local, new_sta);
5370 * tell driver about BSSID, basic rates and timing
5371 * this was set up above, before setting the channel
5373 ieee80211_bss_info_change_notify(sdata,
5374 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5375 BSS_CHANGED_BEACON_INT);
5378 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
5380 err = sta_info_insert(new_sta);
5384 "failed to insert STA entry for the AP (error %d)\n",
5389 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
5391 /* Cancel scan to ensure that nothing interferes with connection */
5392 if (local->scanning)
5393 ieee80211_scan_cancel(local);
5399 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5400 struct cfg80211_auth_request *req)
5402 struct ieee80211_local *local = sdata->local;
5403 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5404 struct ieee80211_mgd_auth_data *auth_data;
5409 /* prepare auth data structure */
5411 switch (req->auth_type) {
5412 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5413 auth_alg = WLAN_AUTH_OPEN;
5415 case NL80211_AUTHTYPE_SHARED_KEY:
5418 auth_alg = WLAN_AUTH_SHARED_KEY;
5420 case NL80211_AUTHTYPE_FT:
5421 auth_alg = WLAN_AUTH_FT;
5423 case NL80211_AUTHTYPE_NETWORK_EAP:
5424 auth_alg = WLAN_AUTH_LEAP;
5426 case NL80211_AUTHTYPE_SAE:
5427 auth_alg = WLAN_AUTH_SAE;
5429 case NL80211_AUTHTYPE_FILS_SK:
5430 auth_alg = WLAN_AUTH_FILS_SK;
5432 case NL80211_AUTHTYPE_FILS_SK_PFS:
5433 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5435 case NL80211_AUTHTYPE_FILS_PK:
5436 auth_alg = WLAN_AUTH_FILS_PK;
5442 if (ifmgd->assoc_data)
5445 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
5446 req->ie_len, GFP_KERNEL);
5450 auth_data->bss = req->bss;
5452 if (req->auth_data_len >= 4) {
5453 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5454 __le16 *pos = (__le16 *) req->auth_data;
5456 auth_data->sae_trans = le16_to_cpu(pos[0]);
5457 auth_data->sae_status = le16_to_cpu(pos[1]);
5459 memcpy(auth_data->data, req->auth_data + 4,
5460 req->auth_data_len - 4);
5461 auth_data->data_len += req->auth_data_len - 4;
5464 /* Check if continuing authentication or trying to authenticate with the
5465 * same BSS that we were in the process of authenticating with and avoid
5466 * removal and re-addition of the STA entry in
5467 * ieee80211_prep_connection().
5469 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5471 if (req->ie && req->ie_len) {
5472 memcpy(&auth_data->data[auth_data->data_len],
5473 req->ie, req->ie_len);
5474 auth_data->data_len += req->ie_len;
5477 if (req->key && req->key_len) {
5478 auth_data->key_len = req->key_len;
5479 auth_data->key_idx = req->key_idx;
5480 memcpy(auth_data->key, req->key, req->key_len);
5483 auth_data->algorithm = auth_alg;
5485 /* try to authenticate/probe */
5487 if (ifmgd->auth_data) {
5488 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5489 auth_data->peer_confirmed =
5490 ifmgd->auth_data->peer_confirmed;
5492 ieee80211_destroy_auth_data(sdata, cont_auth);
5495 /* prep auth_data so we don't go into idle on disassoc */
5496 ifmgd->auth_data = auth_data;
5498 /* If this is continuation of an ongoing SAE authentication exchange
5499 * (i.e., request to send SAE Confirm) and the peer has already
5500 * confirmed, mark authentication completed since we are about to send
5503 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5504 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5505 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5507 if (ifmgd->associated) {
5508 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5511 "disconnect from AP %pM for new auth to %pM\n",
5512 ifmgd->associated->bssid, req->bss->bssid);
5513 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5514 WLAN_REASON_UNSPECIFIED,
5517 ieee80211_report_disconnect(sdata, frame_buf,
5518 sizeof(frame_buf), true,
5519 WLAN_REASON_UNSPECIFIED,
5523 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
5525 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
5529 err = ieee80211_auth(sdata);
5531 sta_info_destroy_addr(sdata, req->bss->bssid);
5535 /* hold our own reference */
5536 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
5540 eth_zero_addr(ifmgd->bssid);
5541 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5542 ifmgd->auth_data = NULL;
5543 mutex_lock(&sdata->local->mtx);
5544 ieee80211_vif_release_channel(sdata);
5545 mutex_unlock(&sdata->local->mtx);
5550 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5551 struct cfg80211_assoc_request *req)
5553 bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
5554 bool is_5ghz = req->bss->channel->band == NL80211_BAND_5GHZ;
5555 struct ieee80211_local *local = sdata->local;
5556 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5557 struct ieee80211_bss *bss = (void *)req->bss->priv;
5558 struct ieee80211_mgd_assoc_data *assoc_data;
5559 const struct cfg80211_bss_ies *beacon_ies;
5560 struct ieee80211_supported_band *sband;
5561 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
5562 const u8 *ssidie, *ht_ie, *vht_ie;
5564 bool override = false;
5566 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5571 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
5572 if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
5577 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
5578 assoc_data->ssid_len = ssidie[1];
5579 memcpy(bss_conf->ssid, assoc_data->ssid, assoc_data->ssid_len);
5580 bss_conf->ssid_len = assoc_data->ssid_len;
5583 if (ifmgd->associated) {
5584 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5587 "disconnect from AP %pM for new assoc to %pM\n",
5588 ifmgd->associated->bssid, req->bss->bssid);
5589 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5590 WLAN_REASON_UNSPECIFIED,
5593 ieee80211_report_disconnect(sdata, frame_buf,
5594 sizeof(frame_buf), true,
5595 WLAN_REASON_UNSPECIFIED,
5599 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5604 if (ifmgd->assoc_data) {
5609 if (ifmgd->auth_data) {
5612 /* keep sta info, bssid if matching */
5613 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
5614 ieee80211_destroy_auth_data(sdata, match);
5617 /* prepare assoc data */
5619 ifmgd->beacon_crc_valid = false;
5621 assoc_data->wmm = bss->wmm_used &&
5622 (local->hw.queues >= IEEE80211_NUM_ACS);
5625 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
5626 * We still associate in non-HT mode (11a/b/g) if any one of these
5627 * ciphers is configured as pairwise.
5628 * We can set this to true for non-11n hardware, that'll be checked
5629 * separately along with the peer capabilities.
5631 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
5632 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5633 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
5634 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
5635 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5636 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5637 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5638 netdev_info(sdata->dev,
5639 "disabling HT/VHT/HE due to WEP/TKIP use\n");
5643 sband = local->hw.wiphy->bands[req->bss->channel->band];
5645 /* also disable HT/VHT/HE if the AP doesn't use WMM */
5646 if (!bss->wmm_used) {
5647 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5648 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5649 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5650 netdev_info(sdata->dev,
5651 "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
5654 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5655 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5656 sizeof(ifmgd->ht_capa_mask));
5658 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5659 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5660 sizeof(ifmgd->vht_capa_mask));
5662 memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
5663 memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
5664 sizeof(ifmgd->s1g_capa_mask));
5666 if (req->ie && req->ie_len) {
5667 memcpy(assoc_data->ie, req->ie, req->ie_len);
5668 assoc_data->ie_len = req->ie_len;
5671 if (req->fils_kek) {
5672 /* should already be checked in cfg80211 - so warn */
5673 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5677 memcpy(assoc_data->fils_kek, req->fils_kek,
5679 assoc_data->fils_kek_len = req->fils_kek_len;
5682 if (req->fils_nonces)
5683 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5684 2 * FILS_NONCE_LEN);
5686 assoc_data->bss = req->bss;
5687 assoc_data->capability = req->bss->capability;
5688 assoc_data->supp_rates = bss->supp_rates;
5689 assoc_data->supp_rates_len = bss->supp_rates_len;
5692 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
5693 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
5694 assoc_data->ap_ht_param =
5695 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
5697 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5698 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
5699 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
5700 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
5701 sizeof(struct ieee80211_vht_cap));
5703 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
5704 IEEE80211_STA_DISABLE_HE;
5707 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
5708 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
5709 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5710 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5712 if (bss->wmm_used && bss->uapsd_supported &&
5713 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
5714 assoc_data->uapsd = true;
5715 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5717 assoc_data->uapsd = false;
5718 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5721 if (req->prev_bssid)
5722 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
5725 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5726 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5728 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5729 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5732 if (req->flags & ASSOC_REQ_USE_RRM)
5733 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5735 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5737 if (req->crypto.control_port)
5738 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5740 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5742 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5743 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
5744 sdata->control_port_over_nl80211 =
5745 req->crypto.control_port_over_nl80211;
5746 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
5747 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5750 /* kick off associate process */
5752 ifmgd->assoc_data = assoc_data;
5753 ifmgd->dtim_period = 0;
5754 ifmgd->have_beacon = false;
5756 /* override HT/VHT configuration only if the AP and we support it */
5757 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5758 struct ieee80211_sta_ht_cap sta_ht_cap;
5760 if (req->flags & ASSOC_REQ_DISABLE_HT)
5763 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5764 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5766 /* check for 40 MHz disable override */
5767 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5768 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5769 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5772 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5773 req->flags & ASSOC_REQ_DISABLE_VHT)
5777 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5778 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5779 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5780 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5783 if (req->flags & ASSOC_REQ_DISABLE_VHT)
5784 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5786 if (req->flags & ASSOC_REQ_DISABLE_HE)
5787 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5789 err = ieee80211_prep_connection(sdata, req->bss, true, override);
5793 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5794 if (ifmgd->powersave)
5795 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
5797 sdata->smps_mode = IEEE80211_SMPS_OFF;
5799 sdata->smps_mode = ifmgd->req_smps;
5803 beacon_ies = rcu_dereference(req->bss->beacon_ies);
5805 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
5808 * Wait up to one beacon interval ...
5809 * should this be more if we miss one?
5811 sdata_info(sdata, "waiting for beacon from %pM\n",
5813 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
5814 assoc_data->timeout_started = true;
5815 assoc_data->need_beacon = true;
5816 } else if (beacon_ies) {
5817 const struct element *elem;
5820 ieee80211_get_dtim(beacon_ies, &dtim_count,
5821 &ifmgd->dtim_period);
5823 ifmgd->have_beacon = true;
5824 assoc_data->timeout = jiffies;
5825 assoc_data->timeout_started = true;
5827 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
5828 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5829 sdata->vif.bss_conf.sync_device_ts =
5830 bss->device_ts_beacon;
5831 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5834 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5835 beacon_ies->data, beacon_ies->len);
5836 if (elem && elem->datalen >= 3)
5837 sdata->vif.bss_conf.profile_periodicity = elem->data[2];
5839 sdata->vif.bss_conf.profile_periodicity = 0;
5841 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
5842 beacon_ies->data, beacon_ies->len);
5843 if (elem && elem->datalen >= 11 &&
5844 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
5845 sdata->vif.bss_conf.ema_ap = true;
5847 sdata->vif.bss_conf.ema_ap = false;
5849 assoc_data->timeout = jiffies;
5850 assoc_data->timeout_started = true;
5854 run_again(sdata, assoc_data->timeout);
5856 if (bss->corrupt_data) {
5857 char *corrupt_type = "data";
5858 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5859 if (bss->corrupt_data &
5860 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5861 corrupt_type = "beacon and probe response";
5863 corrupt_type = "beacon";
5864 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5865 corrupt_type = "probe response";
5866 sdata_info(sdata, "associating with AP with corrupt %s\n",
5872 eth_zero_addr(ifmgd->bssid);
5873 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5874 ifmgd->assoc_data = NULL;
5880 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
5881 struct cfg80211_deauth_request *req)
5883 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5884 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5885 bool tx = !req->local_state_change;
5886 struct ieee80211_prep_tx_info info = {
5887 .subtype = IEEE80211_STYPE_DEAUTH,
5890 if (ifmgd->auth_data &&
5891 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5893 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5894 req->bssid, req->reason_code,
5895 ieee80211_get_reason_code_string(req->reason_code));
5897 drv_mgd_prepare_tx(sdata->local, sdata, &info);
5898 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5899 IEEE80211_STYPE_DEAUTH,
5900 req->reason_code, tx,
5902 ieee80211_destroy_auth_data(sdata, false);
5903 ieee80211_report_disconnect(sdata, frame_buf,
5904 sizeof(frame_buf), true,
5905 req->reason_code, false);
5906 drv_mgd_complete_tx(sdata->local, sdata, &info);
5910 if (ifmgd->assoc_data &&
5911 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5913 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5914 req->bssid, req->reason_code,
5915 ieee80211_get_reason_code_string(req->reason_code));
5917 drv_mgd_prepare_tx(sdata->local, sdata, &info);
5918 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5919 IEEE80211_STYPE_DEAUTH,
5920 req->reason_code, tx,
5922 ieee80211_destroy_assoc_data(sdata, false, true);
5923 ieee80211_report_disconnect(sdata, frame_buf,
5924 sizeof(frame_buf), true,
5925 req->reason_code, false);
5929 if (ifmgd->associated &&
5930 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
5932 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5933 req->bssid, req->reason_code,
5934 ieee80211_get_reason_code_string(req->reason_code));
5936 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5937 req->reason_code, tx, frame_buf);
5938 ieee80211_report_disconnect(sdata, frame_buf,
5939 sizeof(frame_buf), true,
5940 req->reason_code, false);
5941 drv_mgd_complete_tx(sdata->local, sdata, &info);
5948 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
5949 struct cfg80211_disassoc_request *req)
5951 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5953 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5956 * cfg80211 should catch this ... but it's racy since
5957 * we can receive a disassoc frame, process it, hand it
5958 * to cfg80211 while that's in a locked section already
5959 * trying to tell us that the user wants to disconnect.
5961 if (ifmgd->associated != req->bss)
5965 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5966 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
5968 memcpy(bssid, req->bss->bssid, ETH_ALEN);
5969 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5970 req->reason_code, !req->local_state_change,
5973 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5974 req->reason_code, false);
5979 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
5981 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5984 * Make sure some work items will not run after this,
5985 * they will not do anything but might not have been
5986 * cancelled when disconnecting.
5988 cancel_work_sync(&ifmgd->monitor_work);
5989 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5990 cancel_work_sync(&ifmgd->request_smps_work);
5991 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5992 cancel_work_sync(&ifmgd->chswitch_work);
5993 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
5996 if (ifmgd->assoc_data) {
5997 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
5998 ieee80211_destroy_assoc_data(sdata, false, false);
5999 cfg80211_assoc_timeout(sdata->dev, bss);
6001 if (ifmgd->auth_data)
6002 ieee80211_destroy_auth_data(sdata, false);
6003 spin_lock_bh(&ifmgd->teardown_lock);
6004 if (ifmgd->teardown_skb) {
6005 kfree_skb(ifmgd->teardown_skb);
6006 ifmgd->teardown_skb = NULL;
6007 ifmgd->orig_teardown_skb = NULL;
6009 kfree(ifmgd->assoc_req_ies);
6010 ifmgd->assoc_req_ies = NULL;
6011 ifmgd->assoc_req_ies_len = 0;
6012 spin_unlock_bh(&ifmgd->teardown_lock);
6013 del_timer_sync(&ifmgd->timer);
6014 sdata_unlock(sdata);
6017 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
6018 enum nl80211_cqm_rssi_threshold_event rssi_event,
6022 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
6024 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
6026 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
6028 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
6030 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
6032 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
6034 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
6036 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
6038 EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);