2 * BSS client mode implementation
3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 * Copyright 2013-2014 Intel Mobile Communications GmbH
9 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/delay.h>
17 #include <linux/if_ether.h>
18 #include <linux/skbuff.h>
19 #include <linux/if_arp.h>
20 #include <linux/etherdevice.h>
21 #include <linux/moduleparam.h>
22 #include <linux/rtnetlink.h>
23 #include <linux/crc32.h>
24 #include <linux/slab.h>
25 #include <linux/export.h>
26 #include <net/mac80211.h>
27 #include <asm/unaligned.h>
29 #include "ieee80211_i.h"
30 #include "driver-ops.h"
33 #include "fils_aead.h"
35 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
36 #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
37 #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
38 #define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
39 #define IEEE80211_AUTH_MAX_TRIES 3
40 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
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
,
149 const struct ieee80211_ht_operation
*ht_oper
,
150 const struct ieee80211_vht_operation
*vht_oper
,
151 struct cfg80211_chan_def
*chandef
, bool tracking
)
153 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
154 struct cfg80211_chan_def vht_chandef
;
155 struct ieee80211_sta_ht_cap sta_ht_cap
;
158 memcpy(&sta_ht_cap
, &sband
->ht_cap
, sizeof(sta_ht_cap
));
159 ieee80211_apply_htcap_overrides(sdata
, &sta_ht_cap
);
161 chandef
->chan
= channel
;
162 chandef
->width
= NL80211_CHAN_WIDTH_20_NOHT
;
163 chandef
->center_freq1
= channel
->center_freq
;
164 chandef
->center_freq2
= 0;
166 if (!ht_oper
|| !sta_ht_cap
.ht_supported
) {
167 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
171 chandef
->width
= NL80211_CHAN_WIDTH_20
;
173 ht_cfreq
= ieee80211_channel_to_frequency(ht_oper
->primary_chan
,
175 /* check that channel matches the right operating channel */
176 if (!tracking
&& channel
->center_freq
!= ht_cfreq
) {
178 * It's possible that some APs are confused here;
179 * Netgear WNDR3700 sometimes reports 4 higher than
180 * the actual channel in association responses, but
181 * since we look at probe response/beacon data here
185 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
186 channel
->center_freq
, ht_cfreq
,
187 ht_oper
->primary_chan
, channel
->band
);
188 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
192 /* check 40 MHz support, if we have it */
193 if (sta_ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
) {
194 ieee80211_chandef_ht_oper(ht_oper
, chandef
);
196 /* 40 MHz (and 80 MHz) must be supported for VHT */
197 ret
= IEEE80211_STA_DISABLE_VHT
;
198 /* also mark 40 MHz disabled */
199 ret
|= IEEE80211_STA_DISABLE_40MHZ
;
203 if (!vht_oper
|| !sband
->vht_cap
.vht_supported
) {
204 ret
= IEEE80211_STA_DISABLE_VHT
;
208 vht_chandef
= *chandef
;
209 if (!ieee80211_chandef_vht_oper(vht_oper
, &vht_chandef
)) {
210 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
212 "AP VHT information is invalid, disable VHT\n");
213 ret
= IEEE80211_STA_DISABLE_VHT
;
217 if (!cfg80211_chandef_valid(&vht_chandef
)) {
218 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
220 "AP VHT information is invalid, disable VHT\n");
221 ret
= IEEE80211_STA_DISABLE_VHT
;
225 if (cfg80211_chandef_identical(chandef
, &vht_chandef
)) {
230 if (!cfg80211_chandef_compatible(chandef
, &vht_chandef
)) {
231 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
233 "AP VHT information doesn't match HT, disable VHT\n");
234 ret
= IEEE80211_STA_DISABLE_VHT
;
238 *chandef
= vht_chandef
;
244 * When tracking the current AP, don't do any further checks if the
245 * new chandef is identical to the one we're currently using for the
246 * connection. This keeps us from playing ping-pong with regulatory,
247 * without it the following can happen (for example):
248 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
249 * - AP advertises regdom US
250 * - CRDA loads regdom US with 80 MHz prohibited (old database)
251 * - the code below detects an unsupported channel, downgrades, and
252 * we disconnect from the AP in the caller
253 * - disconnect causes CRDA to reload world regdomain and the game
255 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
257 * It seems possible that there are still scenarios with CSA or real
258 * bandwidth changes where a this could happen, but those cases are
259 * less common and wouldn't completely prevent using the AP.
262 cfg80211_chandef_identical(chandef
, &sdata
->vif
.bss_conf
.chandef
))
265 /* don't print the message below for VHT mismatch if VHT is disabled */
266 if (ret
& IEEE80211_STA_DISABLE_VHT
)
267 vht_chandef
= *chandef
;
270 * Ignore the DISABLED flag when we're already connected and only
271 * tracking the APs beacon for bandwidth changes - otherwise we
272 * might get disconnected here if we connect to an AP, update our
273 * regulatory information based on the AP's country IE and the
274 * information we have is wrong/outdated and disables the channel
275 * that we're actually using for the connection to the AP.
277 while (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, chandef
,
279 IEEE80211_CHAN_DISABLED
)) {
280 if (WARN_ON(chandef
->width
== NL80211_CHAN_WIDTH_20_NOHT
)) {
281 ret
= IEEE80211_STA_DISABLE_HT
|
282 IEEE80211_STA_DISABLE_VHT
;
286 ret
|= ieee80211_chandef_downgrade(chandef
);
289 if (chandef
->width
!= vht_chandef
.width
&& !tracking
)
291 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
293 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef
));
297 static int ieee80211_config_bw(struct ieee80211_sub_if_data
*sdata
,
298 struct sta_info
*sta
,
299 const struct ieee80211_ht_cap
*ht_cap
,
300 const struct ieee80211_ht_operation
*ht_oper
,
301 const struct ieee80211_vht_operation
*vht_oper
,
302 const u8
*bssid
, u32
*changed
)
304 struct ieee80211_local
*local
= sdata
->local
;
305 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
306 struct ieee80211_supported_band
*sband
;
307 struct ieee80211_channel
*chan
;
308 struct cfg80211_chan_def chandef
;
311 enum ieee80211_sta_rx_bandwidth new_sta_bw
;
314 /* if HT was/is disabled, don't track any bandwidth changes */
315 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
|| !ht_oper
)
318 /* don't check VHT if we associated as non-VHT station */
319 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
322 if (WARN_ON_ONCE(!sta
))
326 * if bss configuration changed store the new one -
327 * this may be applicable even if channel is identical
329 ht_opmode
= le16_to_cpu(ht_oper
->operation_mode
);
330 if (sdata
->vif
.bss_conf
.ht_operation_mode
!= ht_opmode
) {
331 *changed
|= BSS_CHANGED_HT
;
332 sdata
->vif
.bss_conf
.ht_operation_mode
= ht_opmode
;
335 chan
= sdata
->vif
.bss_conf
.chandef
.chan
;
336 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
338 /* calculate new channel (type) based on HT/VHT operation IEs */
339 flags
= ieee80211_determine_chantype(sdata
, sband
, chan
,
344 * Downgrade the new channel if we associated with restricted
345 * capabilities. For example, if we associated as a 20 MHz STA
346 * to a 40 MHz AP (due to regulatory, capabilities or config
347 * reasons) then switching to a 40 MHz channel now won't do us
348 * any good -- we couldn't use it with the AP.
350 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_80P80MHZ
&&
351 chandef
.width
== NL80211_CHAN_WIDTH_80P80
)
352 flags
|= ieee80211_chandef_downgrade(&chandef
);
353 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_160MHZ
&&
354 chandef
.width
== NL80211_CHAN_WIDTH_160
)
355 flags
|= ieee80211_chandef_downgrade(&chandef
);
356 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_40MHZ
&&
357 chandef
.width
> NL80211_CHAN_WIDTH_20
)
358 flags
|= ieee80211_chandef_downgrade(&chandef
);
360 if (cfg80211_chandef_identical(&chandef
, &sdata
->vif
.bss_conf
.chandef
))
364 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
365 ifmgd
->bssid
, chandef
.chan
->center_freq
, chandef
.width
,
366 chandef
.center_freq1
, chandef
.center_freq2
);
368 if (flags
!= (ifmgd
->flags
& (IEEE80211_STA_DISABLE_HT
|
369 IEEE80211_STA_DISABLE_VHT
|
370 IEEE80211_STA_DISABLE_40MHZ
|
371 IEEE80211_STA_DISABLE_80P80MHZ
|
372 IEEE80211_STA_DISABLE_160MHZ
)) ||
373 !cfg80211_chandef_valid(&chandef
)) {
375 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
380 switch (chandef
.width
) {
381 case NL80211_CHAN_WIDTH_20_NOHT
:
382 case NL80211_CHAN_WIDTH_20
:
383 new_sta_bw
= IEEE80211_STA_RX_BW_20
;
385 case NL80211_CHAN_WIDTH_40
:
386 new_sta_bw
= IEEE80211_STA_RX_BW_40
;
388 case NL80211_CHAN_WIDTH_80
:
389 new_sta_bw
= IEEE80211_STA_RX_BW_80
;
391 case NL80211_CHAN_WIDTH_80P80
:
392 case NL80211_CHAN_WIDTH_160
:
393 new_sta_bw
= IEEE80211_STA_RX_BW_160
;
399 if (new_sta_bw
> sta
->cur_max_bandwidth
)
400 new_sta_bw
= sta
->cur_max_bandwidth
;
402 if (new_sta_bw
< sta
->sta
.bandwidth
) {
403 sta
->sta
.bandwidth
= new_sta_bw
;
404 rate_control_rate_update(local
, sband
, sta
,
405 IEEE80211_RC_BW_CHANGED
);
408 ret
= ieee80211_vif_change_bandwidth(sdata
, &chandef
, changed
);
411 "AP %pM changed bandwidth to incompatible one - disconnect\n",
416 if (new_sta_bw
> sta
->sta
.bandwidth
) {
417 sta
->sta
.bandwidth
= new_sta_bw
;
418 rate_control_rate_update(local
, sband
, sta
,
419 IEEE80211_RC_BW_CHANGED
);
425 /* frame sending functions */
427 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data
*sdata
,
428 struct sk_buff
*skb
, u8 ap_ht_param
,
429 struct ieee80211_supported_band
*sband
,
430 struct ieee80211_channel
*channel
,
431 enum ieee80211_smps_mode smps
)
434 u32 flags
= channel
->flags
;
436 struct ieee80211_sta_ht_cap ht_cap
;
438 BUILD_BUG_ON(sizeof(ht_cap
) != sizeof(sband
->ht_cap
));
440 memcpy(&ht_cap
, &sband
->ht_cap
, sizeof(ht_cap
));
441 ieee80211_apply_htcap_overrides(sdata
, &ht_cap
);
443 /* determine capability flags */
446 switch (ap_ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
447 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
448 if (flags
& IEEE80211_CHAN_NO_HT40PLUS
) {
449 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
450 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
453 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
454 if (flags
& IEEE80211_CHAN_NO_HT40MINUS
) {
455 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
456 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
462 * If 40 MHz was disabled associate as though we weren't
463 * capable of 40 MHz -- some broken APs will never fall
464 * back to trying to transmit in 20 MHz.
466 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_40MHZ
) {
467 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
468 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
471 /* set SM PS mode properly */
472 cap
&= ~IEEE80211_HT_CAP_SM_PS
;
474 case IEEE80211_SMPS_AUTOMATIC
:
475 case IEEE80211_SMPS_NUM_MODES
:
477 case IEEE80211_SMPS_OFF
:
478 cap
|= WLAN_HT_CAP_SM_PS_DISABLED
<<
479 IEEE80211_HT_CAP_SM_PS_SHIFT
;
481 case IEEE80211_SMPS_STATIC
:
482 cap
|= WLAN_HT_CAP_SM_PS_STATIC
<<
483 IEEE80211_HT_CAP_SM_PS_SHIFT
;
485 case IEEE80211_SMPS_DYNAMIC
:
486 cap
|= WLAN_HT_CAP_SM_PS_DYNAMIC
<<
487 IEEE80211_HT_CAP_SM_PS_SHIFT
;
491 /* reserve and fill IE */
492 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
) + 2);
493 ieee80211_ie_build_ht_cap(pos
, &ht_cap
, cap
);
496 /* This function determines vht capability flags for the association
498 * Note - the function may set the owner of the MU-MIMO capability
500 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data
*sdata
,
502 struct ieee80211_supported_band
*sband
,
503 struct ieee80211_vht_cap
*ap_vht_cap
)
505 struct ieee80211_local
*local
= sdata
->local
;
508 struct ieee80211_sta_vht_cap vht_cap
;
509 u32 mask
, ap_bf_sts
, our_bf_sts
;
511 BUILD_BUG_ON(sizeof(vht_cap
) != sizeof(sband
->vht_cap
));
513 memcpy(&vht_cap
, &sband
->vht_cap
, sizeof(vht_cap
));
514 ieee80211_apply_vhtcap_overrides(sdata
, &vht_cap
);
516 /* determine capability flags */
519 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_80P80MHZ
) {
520 u32 bw
= cap
& IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
522 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
523 if (bw
== IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
||
524 bw
== IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ
)
525 cap
|= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
;
528 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_160MHZ
) {
529 cap
&= ~IEEE80211_VHT_CAP_SHORT_GI_160
;
530 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
534 * Some APs apparently get confused if our capabilities are better
535 * than theirs, so restrict what we advertise in the assoc request.
537 if (!(ap_vht_cap
->vht_cap_info
&
538 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE
)))
539 cap
&= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE
|
540 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE
);
541 else if (!(ap_vht_cap
->vht_cap_info
&
542 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE
)))
543 cap
&= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE
;
546 * If some other vif is using the MU-MIMO capablity we cannot associate
547 * using MU-MIMO - this will lead to contradictions in the group-id
549 * Ownership is defined since association request, in order to avoid
550 * simultaneous associations with MU-MIMO.
552 if (cap
& IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE
) {
553 bool disable_mu_mimo
= false;
554 struct ieee80211_sub_if_data
*other
;
556 list_for_each_entry_rcu(other
, &local
->interfaces
, list
) {
557 if (other
->vif
.mu_mimo_owner
) {
558 disable_mu_mimo
= true;
563 cap
&= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE
;
565 sdata
->vif
.mu_mimo_owner
= true;
568 mask
= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK
;
570 ap_bf_sts
= le32_to_cpu(ap_vht_cap
->vht_cap_info
) & mask
;
571 our_bf_sts
= cap
& mask
;
573 if (ap_bf_sts
< our_bf_sts
) {
578 /* reserve and fill IE */
579 pos
= skb_put(skb
, sizeof(struct ieee80211_vht_cap
) + 2);
580 ieee80211_ie_build_vht_cap(pos
, &vht_cap
, cap
);
583 static void ieee80211_send_assoc(struct ieee80211_sub_if_data
*sdata
)
585 struct ieee80211_local
*local
= sdata
->local
;
586 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
587 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
589 struct ieee80211_mgmt
*mgmt
;
591 size_t offset
= 0, noffset
;
592 int i
, count
, rates_len
, supp_rates_len
, shift
;
594 struct ieee80211_supported_band
*sband
;
595 struct ieee80211_chanctx_conf
*chanctx_conf
;
596 struct ieee80211_channel
*chan
;
599 sdata_assert_lock(sdata
);
602 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
603 if (WARN_ON(!chanctx_conf
)) {
607 chan
= chanctx_conf
->def
.chan
;
609 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
610 shift
= ieee80211_vif_get_shift(&sdata
->vif
);
612 if (assoc_data
->supp_rates_len
) {
614 * Get all rates supported by the device and the AP as
615 * some APs don't like getting a superset of their rates
616 * in the association request (e.g. D-Link DAP 1353 in
619 rates_len
= ieee80211_parse_bitrates(&chanctx_conf
->def
, sband
,
620 assoc_data
->supp_rates
,
621 assoc_data
->supp_rates_len
,
625 * In case AP not provide any supported rates information
626 * before association, we send information element(s) with
627 * all rates that we support.
630 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
636 skb
= alloc_skb(local
->hw
.extra_tx_headroom
+
637 sizeof(*mgmt
) + /* bit too much but doesn't matter */
638 2 + assoc_data
->ssid_len
+ /* SSID */
639 4 + rates_len
+ /* (extended) rates */
640 4 + /* power capability */
641 2 + 2 * sband
->n_channels
+ /* supported channels */
642 2 + sizeof(struct ieee80211_ht_cap
) + /* HT */
643 2 + sizeof(struct ieee80211_vht_cap
) + /* VHT */
644 assoc_data
->ie_len
+ /* extra IEs */
645 (assoc_data
->fils_kek_len
? 16 /* AES-SIV */ : 0) +
651 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
653 capab
= WLAN_CAPABILITY_ESS
;
655 if (sband
->band
== NL80211_BAND_2GHZ
) {
656 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
657 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
660 if (assoc_data
->capability
& WLAN_CAPABILITY_PRIVACY
)
661 capab
|= WLAN_CAPABILITY_PRIVACY
;
663 if ((assoc_data
->capability
& WLAN_CAPABILITY_SPECTRUM_MGMT
) &&
664 ieee80211_hw_check(&local
->hw
, SPECTRUM_MGMT
))
665 capab
|= WLAN_CAPABILITY_SPECTRUM_MGMT
;
667 if (ifmgd
->flags
& IEEE80211_STA_ENABLE_RRM
)
668 capab
|= WLAN_CAPABILITY_RADIO_MEASURE
;
670 mgmt
= skb_put_zero(skb
, 24);
671 memcpy(mgmt
->da
, assoc_data
->bss
->bssid
, ETH_ALEN
);
672 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
673 memcpy(mgmt
->bssid
, assoc_data
->bss
->bssid
, ETH_ALEN
);
675 if (!is_zero_ether_addr(assoc_data
->prev_bssid
)) {
677 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
678 IEEE80211_STYPE_REASSOC_REQ
);
679 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
680 mgmt
->u
.reassoc_req
.listen_interval
=
681 cpu_to_le16(local
->hw
.conf
.listen_interval
);
682 memcpy(mgmt
->u
.reassoc_req
.current_ap
, assoc_data
->prev_bssid
,
686 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
687 IEEE80211_STYPE_ASSOC_REQ
);
688 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
689 mgmt
->u
.assoc_req
.listen_interval
=
690 cpu_to_le16(local
->hw
.conf
.listen_interval
);
694 pos
= skb_put(skb
, 2 + assoc_data
->ssid_len
);
695 *pos
++ = WLAN_EID_SSID
;
696 *pos
++ = assoc_data
->ssid_len
;
697 memcpy(pos
, assoc_data
->ssid
, assoc_data
->ssid_len
);
699 /* add all rates which were marked to be used above */
700 supp_rates_len
= rates_len
;
701 if (supp_rates_len
> 8)
704 pos
= skb_put(skb
, supp_rates_len
+ 2);
705 *pos
++ = WLAN_EID_SUPP_RATES
;
706 *pos
++ = supp_rates_len
;
709 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
710 if (BIT(i
) & rates
) {
711 int rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
719 if (rates_len
> count
) {
720 pos
= skb_put(skb
, rates_len
- count
+ 2);
721 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
722 *pos
++ = rates_len
- count
;
724 for (i
++; i
< sband
->n_bitrates
; i
++) {
725 if (BIT(i
) & rates
) {
727 rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
734 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
||
735 capab
& WLAN_CAPABILITY_RADIO_MEASURE
) {
736 pos
= skb_put(skb
, 4);
737 *pos
++ = WLAN_EID_PWR_CAPABILITY
;
739 *pos
++ = 0; /* min tx power */
741 *pos
++ = ieee80211_chandef_max_power(&chanctx_conf
->def
);
744 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
) {
745 /* TODO: get this in reg domain format */
746 pos
= skb_put(skb
, 2 * sband
->n_channels
+ 2);
747 *pos
++ = WLAN_EID_SUPPORTED_CHANNELS
;
748 *pos
++ = 2 * sband
->n_channels
;
749 for (i
= 0; i
< sband
->n_channels
; i
++) {
750 *pos
++ = ieee80211_frequency_to_channel(
751 sband
->channels
[i
].center_freq
);
752 *pos
++ = 1; /* one channel in the subband*/
756 /* if present, add any custom IEs that go before HT */
757 if (assoc_data
->ie_len
) {
758 static const u8 before_ht
[] = {
761 WLAN_EID_EXT_SUPP_RATES
,
762 WLAN_EID_PWR_CAPABILITY
,
763 WLAN_EID_SUPPORTED_CHANNELS
,
766 WLAN_EID_RRM_ENABLED_CAPABILITIES
,
767 WLAN_EID_MOBILITY_DOMAIN
,
768 WLAN_EID_FAST_BSS_TRANSITION
, /* reassoc only */
769 WLAN_EID_RIC_DATA
, /* reassoc only */
770 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
772 static const u8 after_ric
[] = {
773 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
774 WLAN_EID_HT_CAPABILITY
,
775 WLAN_EID_BSS_COEX_2040
,
776 /* luckily this is almost always there */
777 WLAN_EID_EXT_CAPABILITY
,
778 WLAN_EID_QOS_TRAFFIC_CAPA
,
779 WLAN_EID_TIM_BCAST_REQ
,
780 WLAN_EID_INTERWORKING
,
781 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
782 WLAN_EID_VHT_CAPABILITY
,
783 WLAN_EID_OPMODE_NOTIF
,
786 noffset
= ieee80211_ie_split_ric(assoc_data
->ie
,
789 ARRAY_SIZE(before_ht
),
791 ARRAY_SIZE(after_ric
),
793 skb_put_data(skb
, assoc_data
->ie
+ offset
, noffset
- offset
);
797 if (WARN_ON_ONCE((ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
798 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)))
799 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
801 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
802 ieee80211_add_ht_ie(sdata
, skb
, assoc_data
->ap_ht_param
,
803 sband
, chan
, sdata
->smps_mode
);
805 /* if present, add any custom IEs that go before VHT */
806 if (assoc_data
->ie_len
) {
807 static const u8 before_vht
[] = {
809 * no need to list the ones split off before HT
812 WLAN_EID_BSS_COEX_2040
,
813 WLAN_EID_EXT_CAPABILITY
,
814 WLAN_EID_QOS_TRAFFIC_CAPA
,
815 WLAN_EID_TIM_BCAST_REQ
,
816 WLAN_EID_INTERWORKING
,
817 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
820 /* RIC already taken above, so no need to handle here anymore */
821 noffset
= ieee80211_ie_split(assoc_data
->ie
, assoc_data
->ie_len
,
822 before_vht
, ARRAY_SIZE(before_vht
),
824 skb_put_data(skb
, assoc_data
->ie
+ offset
, noffset
- offset
);
828 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
829 ieee80211_add_vht_ie(sdata
, skb
, sband
,
830 &assoc_data
->ap_vht_cap
);
832 /* if present, add any custom non-vendor IEs that go after HT */
833 if (assoc_data
->ie_len
) {
834 noffset
= ieee80211_ie_split_vendor(assoc_data
->ie
,
837 skb_put_data(skb
, assoc_data
->ie
+ offset
, noffset
- offset
);
841 if (assoc_data
->wmm
) {
842 if (assoc_data
->uapsd
) {
843 qos_info
= ifmgd
->uapsd_queues
;
844 qos_info
|= (ifmgd
->uapsd_max_sp_len
<<
845 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT
);
850 pos
= ieee80211_add_wmm_info_ie(skb_put(skb
, 9), qos_info
);
853 /* add any remaining custom (i.e. vendor specific here) IEs */
854 if (assoc_data
->ie_len
) {
855 noffset
= assoc_data
->ie_len
;
856 skb_put_data(skb
, assoc_data
->ie
+ offset
, noffset
- offset
);
859 if (assoc_data
->fils_kek_len
&&
860 fils_encrypt_assoc_req(skb
, assoc_data
) < 0) {
865 drv_mgd_prepare_tx(local
, sdata
);
867 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
868 if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
869 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
|
870 IEEE80211_TX_INTFL_MLME_CONN_TX
;
871 ieee80211_tx_skb(sdata
, skb
);
874 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
875 struct ieee80211_sub_if_data
*sdata
)
877 struct ieee80211_pspoll
*pspoll
;
880 skb
= ieee80211_pspoll_get(&local
->hw
, &sdata
->vif
);
884 pspoll
= (struct ieee80211_pspoll
*) skb
->data
;
885 pspoll
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
887 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
888 ieee80211_tx_skb(sdata
, skb
);
891 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
892 struct ieee80211_sub_if_data
*sdata
,
896 struct ieee80211_hdr_3addr
*nullfunc
;
897 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
899 skb
= ieee80211_nullfunc_get(&local
->hw
, &sdata
->vif
, true);
903 nullfunc
= (struct ieee80211_hdr_3addr
*) skb
->data
;
905 nullfunc
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
907 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
|
908 IEEE80211_TX_INTFL_OFFCHAN_TX_OK
;
910 if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
911 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
;
913 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
914 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_USE_MINRATE
;
916 ieee80211_tx_skb(sdata
, skb
);
919 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local
*local
,
920 struct ieee80211_sub_if_data
*sdata
)
923 struct ieee80211_hdr
*nullfunc
;
926 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
929 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 30);
933 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
935 nullfunc
= skb_put_zero(skb
, 30);
936 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
937 IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
938 nullfunc
->frame_control
= fc
;
939 memcpy(nullfunc
->addr1
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
940 memcpy(nullfunc
->addr2
, sdata
->vif
.addr
, ETH_ALEN
);
941 memcpy(nullfunc
->addr3
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
942 memcpy(nullfunc
->addr4
, sdata
->vif
.addr
, ETH_ALEN
);
944 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
945 ieee80211_tx_skb(sdata
, skb
);
948 /* spectrum management related things */
949 static void ieee80211_chswitch_work(struct work_struct
*work
)
951 struct ieee80211_sub_if_data
*sdata
=
952 container_of(work
, struct ieee80211_sub_if_data
, u
.mgd
.chswitch_work
);
953 struct ieee80211_local
*local
= sdata
->local
;
954 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
957 if (!ieee80211_sdata_running(sdata
))
961 mutex_lock(&local
->mtx
);
962 mutex_lock(&local
->chanctx_mtx
);
964 if (!ifmgd
->associated
)
967 if (!sdata
->vif
.csa_active
)
971 * using reservation isn't immediate as it may be deferred until later
972 * with multi-vif. once reservation is complete it will re-schedule the
973 * work with no reserved_chanctx so verify chandef to check if it
974 * completed successfully
977 if (sdata
->reserved_chanctx
) {
979 * with multi-vif csa driver may call ieee80211_csa_finish()
980 * many times while waiting for other interfaces to use their
983 if (sdata
->reserved_ready
)
986 ret
= ieee80211_vif_use_reserved_context(sdata
);
989 "failed to use reserved channel context, disconnecting (err=%d)\n",
991 ieee80211_queue_work(&sdata
->local
->hw
,
992 &ifmgd
->csa_connection_drop_work
);
999 if (!cfg80211_chandef_identical(&sdata
->vif
.bss_conf
.chandef
,
1000 &sdata
->csa_chandef
)) {
1002 "failed to finalize channel switch, disconnecting\n");
1003 ieee80211_queue_work(&sdata
->local
->hw
,
1004 &ifmgd
->csa_connection_drop_work
);
1008 /* XXX: shouldn't really modify cfg80211-owned data! */
1009 ifmgd
->associated
->channel
= sdata
->csa_chandef
.chan
;
1011 ifmgd
->csa_waiting_bcn
= true;
1013 ieee80211_sta_reset_beacon_monitor(sdata
);
1014 ieee80211_sta_reset_conn_monitor(sdata
);
1017 mutex_unlock(&local
->chanctx_mtx
);
1018 mutex_unlock(&local
->mtx
);
1019 sdata_unlock(sdata
);
1022 static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data
*sdata
)
1024 struct ieee80211_local
*local
= sdata
->local
;
1025 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1028 sdata_assert_lock(sdata
);
1030 WARN_ON(!sdata
->vif
.csa_active
);
1032 if (sdata
->csa_block_tx
) {
1033 ieee80211_wake_vif_queues(local
, sdata
,
1034 IEEE80211_QUEUE_STOP_REASON_CSA
);
1035 sdata
->csa_block_tx
= false;
1038 sdata
->vif
.csa_active
= false;
1039 ifmgd
->csa_waiting_bcn
= false;
1041 ret
= drv_post_channel_switch(sdata
);
1044 "driver post channel switch failed, disconnecting\n");
1045 ieee80211_queue_work(&local
->hw
,
1046 &ifmgd
->csa_connection_drop_work
);
1050 cfg80211_ch_switch_notify(sdata
->dev
, &sdata
->reserved_chandef
);
1053 void ieee80211_chswitch_done(struct ieee80211_vif
*vif
, bool success
)
1055 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1056 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1058 trace_api_chswitch_done(sdata
, success
);
1061 "driver channel switch failed, disconnecting\n");
1062 ieee80211_queue_work(&sdata
->local
->hw
,
1063 &ifmgd
->csa_connection_drop_work
);
1065 ieee80211_queue_work(&sdata
->local
->hw
, &ifmgd
->chswitch_work
);
1068 EXPORT_SYMBOL(ieee80211_chswitch_done
);
1070 static void ieee80211_chswitch_timer(struct timer_list
*t
)
1072 struct ieee80211_sub_if_data
*sdata
=
1073 from_timer(sdata
, t
, u
.mgd
.chswitch_timer
);
1075 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->u
.mgd
.chswitch_work
);
1079 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1080 u64 timestamp
, u32 device_timestamp
,
1081 struct ieee802_11_elems
*elems
,
1084 struct ieee80211_local
*local
= sdata
->local
;
1085 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1086 struct cfg80211_bss
*cbss
= ifmgd
->associated
;
1087 struct ieee80211_chanctx_conf
*conf
;
1088 struct ieee80211_chanctx
*chanctx
;
1089 enum nl80211_band current_band
;
1090 struct ieee80211_csa_ie csa_ie
;
1091 struct ieee80211_channel_switch ch_switch
;
1094 sdata_assert_lock(sdata
);
1099 if (local
->scanning
)
1102 /* disregard subsequent announcements if we are already processing */
1103 if (sdata
->vif
.csa_active
)
1106 current_band
= cbss
->channel
->band
;
1107 res
= ieee80211_parse_ch_switch_ie(sdata
, elems
, current_band
,
1109 ifmgd
->associated
->bssid
, &csa_ie
);
1111 ieee80211_queue_work(&local
->hw
,
1112 &ifmgd
->csa_connection_drop_work
);
1116 if (!cfg80211_chandef_usable(local
->hw
.wiphy
, &csa_ie
.chandef
,
1117 IEEE80211_CHAN_DISABLED
)) {
1119 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1120 ifmgd
->associated
->bssid
,
1121 csa_ie
.chandef
.chan
->center_freq
,
1122 csa_ie
.chandef
.width
, csa_ie
.chandef
.center_freq1
,
1123 csa_ie
.chandef
.center_freq2
);
1124 ieee80211_queue_work(&local
->hw
,
1125 &ifmgd
->csa_connection_drop_work
);
1129 if (cfg80211_chandef_identical(&csa_ie
.chandef
,
1130 &sdata
->vif
.bss_conf
.chandef
)) {
1131 if (ifmgd
->csa_ignored_same_chan
)
1134 "AP %pM tries to chanswitch to same channel, ignore\n",
1135 ifmgd
->associated
->bssid
);
1136 ifmgd
->csa_ignored_same_chan
= true;
1141 * Drop all TDLS peers - either we disconnect or move to a different
1142 * channel from this point on. There's no telling what our peer will do.
1143 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1144 * have an incompatible wider chandef.
1146 ieee80211_teardown_tdls_peers(sdata
);
1148 mutex_lock(&local
->mtx
);
1149 mutex_lock(&local
->chanctx_mtx
);
1150 conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1151 lockdep_is_held(&local
->chanctx_mtx
));
1154 "no channel context assigned to vif?, disconnecting\n");
1155 goto drop_connection
;
1158 chanctx
= container_of(conf
, struct ieee80211_chanctx
, conf
);
1160 if (local
->use_chanctx
&&
1161 !ieee80211_hw_check(&local
->hw
, CHANCTX_STA_CSA
)) {
1163 "driver doesn't support chan-switch with channel contexts\n");
1164 goto drop_connection
;
1167 ch_switch
.timestamp
= timestamp
;
1168 ch_switch
.device_timestamp
= device_timestamp
;
1169 ch_switch
.block_tx
= csa_ie
.mode
;
1170 ch_switch
.chandef
= csa_ie
.chandef
;
1171 ch_switch
.count
= csa_ie
.count
;
1173 if (drv_pre_channel_switch(sdata
, &ch_switch
)) {
1175 "preparing for channel switch failed, disconnecting\n");
1176 goto drop_connection
;
1179 res
= ieee80211_vif_reserve_chanctx(sdata
, &csa_ie
.chandef
,
1180 chanctx
->mode
, false);
1183 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1185 goto drop_connection
;
1187 mutex_unlock(&local
->chanctx_mtx
);
1189 sdata
->vif
.csa_active
= true;
1190 sdata
->csa_chandef
= csa_ie
.chandef
;
1191 sdata
->csa_block_tx
= csa_ie
.mode
;
1192 ifmgd
->csa_ignored_same_chan
= false;
1194 if (sdata
->csa_block_tx
)
1195 ieee80211_stop_vif_queues(local
, sdata
,
1196 IEEE80211_QUEUE_STOP_REASON_CSA
);
1197 mutex_unlock(&local
->mtx
);
1199 cfg80211_ch_switch_started_notify(sdata
->dev
, &csa_ie
.chandef
,
1202 if (local
->ops
->channel_switch
) {
1203 /* use driver's channel switch callback */
1204 drv_channel_switch(local
, sdata
, &ch_switch
);
1208 /* channel switch handled in software */
1209 if (csa_ie
.count
<= 1)
1210 ieee80211_queue_work(&local
->hw
, &ifmgd
->chswitch_work
);
1212 mod_timer(&ifmgd
->chswitch_timer
,
1213 TU_TO_EXP_TIME((csa_ie
.count
- 1) *
1214 cbss
->beacon_interval
));
1217 ieee80211_queue_work(&local
->hw
, &ifmgd
->csa_connection_drop_work
);
1218 mutex_unlock(&local
->chanctx_mtx
);
1219 mutex_unlock(&local
->mtx
);
1223 ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data
*sdata
,
1224 struct ieee80211_channel
*channel
,
1225 const u8
*country_ie
, u8 country_ie_len
,
1226 const u8
*pwr_constr_elem
,
1227 int *chan_pwr
, int *pwr_reduction
)
1229 struct ieee80211_country_ie_triplet
*triplet
;
1230 int chan
= ieee80211_frequency_to_channel(channel
->center_freq
);
1231 int i
, chan_increment
;
1232 bool have_chan_pwr
= false;
1235 if (country_ie_len
% 2 || country_ie_len
< IEEE80211_COUNTRY_IE_MIN_LEN
)
1238 triplet
= (void *)(country_ie
+ 3);
1239 country_ie_len
-= 3;
1241 switch (channel
->band
) {
1245 case NL80211_BAND_2GHZ
:
1246 case NL80211_BAND_60GHZ
:
1249 case NL80211_BAND_5GHZ
:
1255 while (country_ie_len
>= 3) {
1256 u8 first_channel
= triplet
->chans
.first_channel
;
1258 if (first_channel
>= IEEE80211_COUNTRY_EXTENSION_ID
)
1261 for (i
= 0; i
< triplet
->chans
.num_channels
; i
++) {
1262 if (first_channel
+ i
* chan_increment
== chan
) {
1263 have_chan_pwr
= true;
1264 *chan_pwr
= triplet
->chans
.max_power
;
1273 country_ie_len
-= 3;
1276 if (have_chan_pwr
&& pwr_constr_elem
)
1277 *pwr_reduction
= *pwr_constr_elem
;
1281 return have_chan_pwr
;
1284 static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data
*sdata
,
1285 struct ieee80211_channel
*channel
,
1286 const u8
*cisco_dtpc_ie
,
1289 /* From practical testing, the first data byte of the DTPC element
1290 * seems to contain the requested dBm level, and the CLI on Cisco
1291 * APs clearly state the range is -127 to 127 dBm, which indicates
1292 * a signed byte, although it seemingly never actually goes negative.
1293 * The other byte seems to always be zero.
1295 *pwr_level
= (__s8
)cisco_dtpc_ie
[4];
1298 static u32
ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data
*sdata
,
1299 struct ieee80211_channel
*channel
,
1300 struct ieee80211_mgmt
*mgmt
,
1301 const u8
*country_ie
, u8 country_ie_len
,
1302 const u8
*pwr_constr_ie
,
1303 const u8
*cisco_dtpc_ie
)
1305 bool has_80211h_pwr
= false, has_cisco_pwr
= false;
1306 int chan_pwr
= 0, pwr_reduction_80211h
= 0;
1307 int pwr_level_cisco
, pwr_level_80211h
;
1309 __le16 capab
= mgmt
->u
.probe_resp
.capab_info
;
1312 (capab
& cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT
) ||
1313 capab
& cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE
))) {
1314 has_80211h_pwr
= ieee80211_find_80211h_pwr_constr(
1315 sdata
, channel
, country_ie
, country_ie_len
,
1316 pwr_constr_ie
, &chan_pwr
, &pwr_reduction_80211h
);
1318 max_t(int, 0, chan_pwr
- pwr_reduction_80211h
);
1321 if (cisco_dtpc_ie
) {
1322 ieee80211_find_cisco_dtpc(
1323 sdata
, channel
, cisco_dtpc_ie
, &pwr_level_cisco
);
1324 has_cisco_pwr
= true;
1327 if (!has_80211h_pwr
&& !has_cisco_pwr
)
1330 /* If we have both 802.11h and Cisco DTPC, apply both limits
1331 * by picking the smallest of the two power levels advertised.
1333 if (has_80211h_pwr
&&
1334 (!has_cisco_pwr
|| pwr_level_80211h
<= pwr_level_cisco
)) {
1335 new_ap_level
= pwr_level_80211h
;
1337 if (sdata
->ap_power_level
== new_ap_level
)
1341 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1342 pwr_level_80211h
, chan_pwr
, pwr_reduction_80211h
,
1343 sdata
->u
.mgd
.bssid
);
1344 } else { /* has_cisco_pwr is always true here. */
1345 new_ap_level
= pwr_level_cisco
;
1347 if (sdata
->ap_power_level
== new_ap_level
)
1351 "Limiting TX power to %d dBm as advertised by %pM\n",
1352 pwr_level_cisco
, sdata
->u
.mgd
.bssid
);
1355 sdata
->ap_power_level
= new_ap_level
;
1356 if (__ieee80211_recalc_txpower(sdata
))
1357 return BSS_CHANGED_TXPOWER
;
1362 static void ieee80211_enable_ps(struct ieee80211_local
*local
,
1363 struct ieee80211_sub_if_data
*sdata
)
1365 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1368 * If we are scanning right now then the parameters will
1369 * take effect when scan finishes.
1371 if (local
->scanning
)
1374 if (conf
->dynamic_ps_timeout
> 0 &&
1375 !ieee80211_hw_check(&local
->hw
, SUPPORTS_DYNAMIC_PS
)) {
1376 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1377 msecs_to_jiffies(conf
->dynamic_ps_timeout
));
1379 if (ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
))
1380 ieee80211_send_nullfunc(local
, sdata
, true);
1382 if (ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
) &&
1383 ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
1386 conf
->flags
|= IEEE80211_CONF_PS
;
1387 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1391 static void ieee80211_change_ps(struct ieee80211_local
*local
)
1393 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1395 if (local
->ps_sdata
) {
1396 ieee80211_enable_ps(local
, local
->ps_sdata
);
1397 } else if (conf
->flags
& IEEE80211_CONF_PS
) {
1398 conf
->flags
&= ~IEEE80211_CONF_PS
;
1399 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1400 del_timer_sync(&local
->dynamic_ps_timer
);
1401 cancel_work_sync(&local
->dynamic_ps_enable_work
);
1405 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data
*sdata
)
1407 struct ieee80211_if_managed
*mgd
= &sdata
->u
.mgd
;
1408 struct sta_info
*sta
= NULL
;
1409 bool authorized
= false;
1411 if (!mgd
->powersave
)
1417 if (!mgd
->associated
)
1420 if (mgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
1423 if (!mgd
->have_beacon
)
1427 sta
= sta_info_get(sdata
, mgd
->bssid
);
1429 authorized
= test_sta_flag(sta
, WLAN_STA_AUTHORIZED
);
1435 /* need to hold RTNL or interface lock */
1436 void ieee80211_recalc_ps(struct ieee80211_local
*local
)
1438 struct ieee80211_sub_if_data
*sdata
, *found
= NULL
;
1442 if (!ieee80211_hw_check(&local
->hw
, SUPPORTS_PS
)) {
1443 local
->ps_sdata
= NULL
;
1447 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1448 if (!ieee80211_sdata_running(sdata
))
1450 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1451 /* If an AP vif is found, then disable PS
1452 * by setting the count to zero thereby setting
1458 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
1464 if (count
== 1 && ieee80211_powersave_allowed(found
)) {
1465 u8 dtimper
= found
->u
.mgd
.dtim_period
;
1467 timeout
= local
->dynamic_ps_forced_timeout
;
1470 local
->hw
.conf
.dynamic_ps_timeout
= timeout
;
1472 /* If the TIM IE is invalid, pretend the value is 1 */
1476 local
->hw
.conf
.ps_dtim_period
= dtimper
;
1477 local
->ps_sdata
= found
;
1479 local
->ps_sdata
= NULL
;
1482 ieee80211_change_ps(local
);
1485 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data
*sdata
)
1487 bool ps_allowed
= ieee80211_powersave_allowed(sdata
);
1489 if (sdata
->vif
.bss_conf
.ps
!= ps_allowed
) {
1490 sdata
->vif
.bss_conf
.ps
= ps_allowed
;
1491 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_PS
);
1495 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
)
1497 struct ieee80211_local
*local
=
1498 container_of(work
, struct ieee80211_local
,
1499 dynamic_ps_disable_work
);
1501 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
1502 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
1503 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1506 ieee80211_wake_queues_by_reason(&local
->hw
,
1507 IEEE80211_MAX_QUEUE_MAP
,
1508 IEEE80211_QUEUE_STOP_REASON_PS
,
1512 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
)
1514 struct ieee80211_local
*local
=
1515 container_of(work
, struct ieee80211_local
,
1516 dynamic_ps_enable_work
);
1517 struct ieee80211_sub_if_data
*sdata
= local
->ps_sdata
;
1518 struct ieee80211_if_managed
*ifmgd
;
1519 unsigned long flags
;
1522 /* can only happen when PS was just disabled anyway */
1526 ifmgd
= &sdata
->u
.mgd
;
1528 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
)
1531 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
1532 /* don't enter PS if TX frames are pending */
1533 if (drv_tx_frames_pending(local
)) {
1534 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1536 local
->hw
.conf
.dynamic_ps_timeout
));
1541 * transmission can be stopped by others which leads to
1542 * dynamic_ps_timer expiry. Postpone the ps timer if it
1543 * is not the actual idle state.
1545 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
1546 for (q
= 0; q
< local
->hw
.queues
; q
++) {
1547 if (local
->queue_stop_reasons
[q
]) {
1548 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
,
1550 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1552 local
->hw
.conf
.dynamic_ps_timeout
));
1556 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
1559 if (ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
) &&
1560 !(ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1561 if (drv_tx_frames_pending(local
)) {
1562 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1564 local
->hw
.conf
.dynamic_ps_timeout
));
1566 ieee80211_send_nullfunc(local
, sdata
, true);
1567 /* Flush to get the tx status of nullfunc frame */
1568 ieee80211_flush_queues(local
, sdata
, false);
1572 if (!(ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
) &&
1573 ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
)) ||
1574 (ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1575 ifmgd
->flags
&= ~IEEE80211_STA_NULLFUNC_ACKED
;
1576 local
->hw
.conf
.flags
|= IEEE80211_CONF_PS
;
1577 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1581 void ieee80211_dynamic_ps_timer(struct timer_list
*t
)
1583 struct ieee80211_local
*local
= from_timer(local
, t
, dynamic_ps_timer
);
1585 ieee80211_queue_work(&local
->hw
, &local
->dynamic_ps_enable_work
);
1588 void ieee80211_dfs_cac_timer_work(struct work_struct
*work
)
1590 struct delayed_work
*delayed_work
= to_delayed_work(work
);
1591 struct ieee80211_sub_if_data
*sdata
=
1592 container_of(delayed_work
, struct ieee80211_sub_if_data
,
1593 dfs_cac_timer_work
);
1594 struct cfg80211_chan_def chandef
= sdata
->vif
.bss_conf
.chandef
;
1596 mutex_lock(&sdata
->local
->mtx
);
1597 if (sdata
->wdev
.cac_started
) {
1598 ieee80211_vif_release_channel(sdata
);
1599 cfg80211_cac_event(sdata
->dev
, &chandef
,
1600 NL80211_RADAR_CAC_FINISHED
,
1603 mutex_unlock(&sdata
->local
->mtx
);
1607 __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data
*sdata
)
1609 struct ieee80211_local
*local
= sdata
->local
;
1610 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1614 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1617 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1618 struct ieee80211_sta_tx_tspec
*tx_tspec
= &ifmgd
->tx_tspec
[ac
];
1620 unsigned long now
= jiffies
;
1622 if (tx_tspec
->action
== TX_TSPEC_ACTION_NONE
&&
1623 tx_tspec
->admitted_time
&&
1624 time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
1625 tx_tspec
->consumed_tx_time
= 0;
1626 tx_tspec
->time_slice_start
= now
;
1628 if (tx_tspec
->downgraded
)
1630 TX_TSPEC_ACTION_STOP_DOWNGRADE
;
1633 switch (tx_tspec
->action
) {
1634 case TX_TSPEC_ACTION_STOP_DOWNGRADE
:
1635 /* take the original parameters */
1636 if (drv_conf_tx(local
, sdata
, ac
, &sdata
->tx_conf
[ac
]))
1638 "failed to set TX queue parameters for queue %d\n",
1640 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1641 tx_tspec
->downgraded
= false;
1644 case TX_TSPEC_ACTION_DOWNGRADE
:
1645 if (time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
1646 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1650 /* downgrade next lower non-ACM AC */
1651 for (non_acm_ac
= ac
+ 1;
1652 non_acm_ac
< IEEE80211_NUM_ACS
;
1654 if (!(sdata
->wmm_acm
& BIT(7 - 2 * non_acm_ac
)))
1656 /* Usually the loop will result in using BK even if it
1657 * requires admission control, but such a configuration
1658 * makes no sense and we have to transmit somehow - the
1659 * AC selection does the same thing.
1660 * If we started out trying to downgrade from BK, then
1661 * the extra condition here might be needed.
1663 if (non_acm_ac
>= IEEE80211_NUM_ACS
)
1664 non_acm_ac
= IEEE80211_AC_BK
;
1665 if (drv_conf_tx(local
, sdata
, ac
,
1666 &sdata
->tx_conf
[non_acm_ac
]))
1668 "failed to set TX queue parameters for queue %d\n",
1670 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1672 schedule_delayed_work(&ifmgd
->tx_tspec_wk
,
1673 tx_tspec
->time_slice_start
+ HZ
- now
+ 1);
1675 case TX_TSPEC_ACTION_NONE
:
1684 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data
*sdata
)
1686 if (__ieee80211_sta_handle_tspec_ac_params(sdata
))
1687 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_QOS
);
1690 static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct
*work
)
1692 struct ieee80211_sub_if_data
*sdata
;
1694 sdata
= container_of(work
, struct ieee80211_sub_if_data
,
1695 u
.mgd
.tx_tspec_wk
.work
);
1696 ieee80211_sta_handle_tspec_ac_params(sdata
);
1700 static bool ieee80211_sta_wmm_params(struct ieee80211_local
*local
,
1701 struct ieee80211_sub_if_data
*sdata
,
1702 const u8
*wmm_param
, size_t wmm_param_len
)
1704 struct ieee80211_tx_queue_params params
[IEEE80211_NUM_ACS
];
1705 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1709 u8 uapsd_queues
= 0;
1711 if (!local
->ops
->conf_tx
)
1714 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1720 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
1723 if (ifmgd
->flags
& IEEE80211_STA_UAPSD_ENABLED
)
1724 uapsd_queues
= ifmgd
->uapsd_queues
;
1726 count
= wmm_param
[6] & 0x0f;
1727 if (count
== ifmgd
->wmm_last_param_set
)
1729 ifmgd
->wmm_last_param_set
= count
;
1731 pos
= wmm_param
+ 8;
1732 left
= wmm_param_len
- 8;
1734 memset(¶ms
, 0, sizeof(params
));
1737 for (; left
>= 4; left
-= 4, pos
+= 4) {
1738 int aci
= (pos
[0] >> 5) & 0x03;
1739 int acm
= (pos
[0] >> 4) & 0x01;
1744 ac
= IEEE80211_AC_BK
;
1746 sdata
->wmm_acm
|= BIT(1) | BIT(2); /* BK/- */
1747 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
)
1751 ac
= IEEE80211_AC_VI
;
1753 sdata
->wmm_acm
|= BIT(4) | BIT(5); /* CL/VI */
1754 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VI
)
1758 ac
= IEEE80211_AC_VO
;
1760 sdata
->wmm_acm
|= BIT(6) | BIT(7); /* VO/NC */
1761 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
)
1766 ac
= IEEE80211_AC_BE
;
1768 sdata
->wmm_acm
|= BIT(0) | BIT(3); /* BE/EE */
1769 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BE
)
1774 params
[ac
].aifs
= pos
[0] & 0x0f;
1776 if (params
[ac
].aifs
< 2) {
1778 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
1779 params
[ac
].aifs
, aci
);
1780 params
[ac
].aifs
= 2;
1782 params
[ac
].cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
1783 params
[ac
].cw_min
= ecw2cw(pos
[1] & 0x0f);
1784 params
[ac
].txop
= get_unaligned_le16(pos
+ 2);
1785 params
[ac
].acm
= acm
;
1786 params
[ac
].uapsd
= uapsd
;
1788 if (params
[ac
].cw_min
> params
[ac
].cw_max
) {
1790 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
1791 params
[ac
].cw_min
, params
[ac
].cw_max
, aci
);
1796 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1798 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
1800 params
[ac
].aifs
, params
[ac
].cw_min
, params
[ac
].cw_max
,
1801 params
[ac
].txop
, params
[ac
].uapsd
,
1802 ifmgd
->tx_tspec
[ac
].downgraded
);
1803 sdata
->tx_conf
[ac
] = params
[ac
];
1804 if (!ifmgd
->tx_tspec
[ac
].downgraded
&&
1805 drv_conf_tx(local
, sdata
, ac
, ¶ms
[ac
]))
1807 "failed to set TX queue parameters for AC %d\n",
1811 /* enable WMM or activate new settings */
1812 sdata
->vif
.bss_conf
.qos
= true;
1816 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1818 lockdep_assert_held(&sdata
->local
->mtx
);
1820 sdata
->u
.mgd
.flags
&= ~IEEE80211_STA_CONNECTION_POLL
;
1821 ieee80211_run_deferred_scan(sdata
->local
);
1824 static void ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1826 mutex_lock(&sdata
->local
->mtx
);
1827 __ieee80211_stop_poll(sdata
);
1828 mutex_unlock(&sdata
->local
->mtx
);
1831 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
1832 u16 capab
, bool erp_valid
, u8 erp
)
1834 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1835 struct ieee80211_supported_band
*sband
;
1837 bool use_protection
;
1838 bool use_short_preamble
;
1839 bool use_short_slot
;
1841 sband
= ieee80211_get_sband(sdata
);
1846 use_protection
= (erp
& WLAN_ERP_USE_PROTECTION
) != 0;
1847 use_short_preamble
= (erp
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
1849 use_protection
= false;
1850 use_short_preamble
= !!(capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
);
1853 use_short_slot
= !!(capab
& WLAN_CAPABILITY_SHORT_SLOT_TIME
);
1854 if (sband
->band
== NL80211_BAND_5GHZ
)
1855 use_short_slot
= true;
1857 if (use_protection
!= bss_conf
->use_cts_prot
) {
1858 bss_conf
->use_cts_prot
= use_protection
;
1859 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
1862 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
1863 bss_conf
->use_short_preamble
= use_short_preamble
;
1864 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
1867 if (use_short_slot
!= bss_conf
->use_short_slot
) {
1868 bss_conf
->use_short_slot
= use_short_slot
;
1869 changed
|= BSS_CHANGED_ERP_SLOT
;
1875 static void ieee80211_set_associated(struct ieee80211_sub_if_data
*sdata
,
1876 struct cfg80211_bss
*cbss
,
1877 u32 bss_info_changed
)
1879 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
1880 struct ieee80211_local
*local
= sdata
->local
;
1881 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1883 bss_info_changed
|= BSS_CHANGED_ASSOC
;
1884 bss_info_changed
|= ieee80211_handle_bss_capability(sdata
,
1885 bss_conf
->assoc_capability
, bss
->has_erp_value
, bss
->erp_value
);
1887 sdata
->u
.mgd
.beacon_timeout
= usecs_to_jiffies(ieee80211_tu_to_usec(
1888 beacon_loss_count
* bss_conf
->beacon_int
));
1890 sdata
->u
.mgd
.associated
= cbss
;
1891 memcpy(sdata
->u
.mgd
.bssid
, cbss
->bssid
, ETH_ALEN
);
1893 ieee80211_check_rate_mask(sdata
);
1895 sdata
->u
.mgd
.flags
|= IEEE80211_STA_RESET_SIGNAL_AVE
;
1897 if (sdata
->vif
.p2p
||
1898 sdata
->vif
.driver_flags
& IEEE80211_VIF_GET_NOA_UPDATE
) {
1899 const struct cfg80211_bss_ies
*ies
;
1902 ies
= rcu_dereference(cbss
->ies
);
1906 ret
= cfg80211_get_p2p_attr(
1907 ies
->data
, ies
->len
,
1908 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
1909 (u8
*) &bss_conf
->p2p_noa_attr
,
1910 sizeof(bss_conf
->p2p_noa_attr
));
1912 sdata
->u
.mgd
.p2p_noa_index
=
1913 bss_conf
->p2p_noa_attr
.index
;
1914 bss_info_changed
|= BSS_CHANGED_P2P_PS
;
1920 /* just to be sure */
1921 ieee80211_stop_poll(sdata
);
1923 ieee80211_led_assoc(local
, 1);
1925 if (sdata
->u
.mgd
.have_beacon
) {
1927 * If the AP is buggy we may get here with no DTIM period
1928 * known, so assume it's 1 which is the only safe assumption
1929 * in that case, although if the TIM IE is broken powersave
1930 * probably just won't work at all.
1932 bss_conf
->dtim_period
= sdata
->u
.mgd
.dtim_period
?: 1;
1933 bss_conf
->beacon_rate
= bss
->beacon_rate
;
1934 bss_info_changed
|= BSS_CHANGED_BEACON_INFO
;
1936 bss_conf
->beacon_rate
= NULL
;
1937 bss_conf
->dtim_period
= 0;
1940 bss_conf
->assoc
= 1;
1942 /* Tell the driver to monitor connection quality (if supported) */
1943 if (sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
&&
1944 bss_conf
->cqm_rssi_thold
)
1945 bss_info_changed
|= BSS_CHANGED_CQM
;
1947 /* Enable ARP filtering */
1948 if (bss_conf
->arp_addr_cnt
)
1949 bss_info_changed
|= BSS_CHANGED_ARP_FILTER
;
1951 ieee80211_bss_info_change_notify(sdata
, bss_info_changed
);
1953 mutex_lock(&local
->iflist_mtx
);
1954 ieee80211_recalc_ps(local
);
1955 mutex_unlock(&local
->iflist_mtx
);
1957 ieee80211_recalc_smps(sdata
);
1958 ieee80211_recalc_ps_vif(sdata
);
1960 netif_carrier_on(sdata
->dev
);
1963 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data
*sdata
,
1964 u16 stype
, u16 reason
, bool tx
,
1967 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1968 struct ieee80211_local
*local
= sdata
->local
;
1971 sdata_assert_lock(sdata
);
1973 if (WARN_ON_ONCE(tx
&& !frame_buf
))
1976 if (WARN_ON(!ifmgd
->associated
))
1979 ieee80211_stop_poll(sdata
);
1981 ifmgd
->associated
= NULL
;
1982 netif_carrier_off(sdata
->dev
);
1985 * if we want to get out of ps before disassoc (why?) we have
1986 * to do it before sending disassoc, as otherwise the null-packet
1989 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
1990 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
1991 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1993 local
->ps_sdata
= NULL
;
1995 /* disable per-vif ps */
1996 ieee80211_recalc_ps_vif(sdata
);
1998 /* make sure ongoing transmission finishes */
2002 * drop any frame before deauth/disassoc, this can be data or
2003 * management frame. Since we are disconnecting, we should not
2004 * insist sending these frames which can take time and delay
2005 * the disconnection and possible the roaming.
2008 ieee80211_flush_queues(local
, sdata
, true);
2010 /* deauthenticate/disassociate now */
2011 if (tx
|| frame_buf
)
2012 ieee80211_send_deauth_disassoc(sdata
, ifmgd
->bssid
, stype
,
2013 reason
, tx
, frame_buf
);
2015 /* flush out frame - make sure the deauth was actually sent */
2017 ieee80211_flush_queues(local
, sdata
, false);
2019 /* clear bssid only after building the needed mgmt frames */
2020 eth_zero_addr(ifmgd
->bssid
);
2022 /* remove AP and TDLS peers */
2023 sta_info_flush(sdata
);
2025 /* finally reset all BSS / config parameters */
2026 changed
|= ieee80211_reset_erp_info(sdata
);
2028 ieee80211_led_assoc(local
, 0);
2029 changed
|= BSS_CHANGED_ASSOC
;
2030 sdata
->vif
.bss_conf
.assoc
= false;
2032 ifmgd
->p2p_noa_index
= -1;
2033 memset(&sdata
->vif
.bss_conf
.p2p_noa_attr
, 0,
2034 sizeof(sdata
->vif
.bss_conf
.p2p_noa_attr
));
2036 /* on the next assoc, re-program HT/VHT parameters */
2037 memset(&ifmgd
->ht_capa
, 0, sizeof(ifmgd
->ht_capa
));
2038 memset(&ifmgd
->ht_capa_mask
, 0, sizeof(ifmgd
->ht_capa_mask
));
2039 memset(&ifmgd
->vht_capa
, 0, sizeof(ifmgd
->vht_capa
));
2040 memset(&ifmgd
->vht_capa_mask
, 0, sizeof(ifmgd
->vht_capa_mask
));
2042 /* reset MU-MIMO ownership and group data */
2043 memset(sdata
->vif
.bss_conf
.mu_group
.membership
, 0,
2044 sizeof(sdata
->vif
.bss_conf
.mu_group
.membership
));
2045 memset(sdata
->vif
.bss_conf
.mu_group
.position
, 0,
2046 sizeof(sdata
->vif
.bss_conf
.mu_group
.position
));
2047 changed
|= BSS_CHANGED_MU_GROUPS
;
2048 sdata
->vif
.mu_mimo_owner
= false;
2050 sdata
->ap_power_level
= IEEE80211_UNSET_POWER_LEVEL
;
2052 del_timer_sync(&local
->dynamic_ps_timer
);
2053 cancel_work_sync(&local
->dynamic_ps_enable_work
);
2055 /* Disable ARP filtering */
2056 if (sdata
->vif
.bss_conf
.arp_addr_cnt
)
2057 changed
|= BSS_CHANGED_ARP_FILTER
;
2059 sdata
->vif
.bss_conf
.qos
= false;
2060 changed
|= BSS_CHANGED_QOS
;
2062 /* The BSSID (not really interesting) and HT changed */
2063 changed
|= BSS_CHANGED_BSSID
| BSS_CHANGED_HT
;
2064 ieee80211_bss_info_change_notify(sdata
, changed
);
2066 /* disassociated - set to defaults now */
2067 ieee80211_set_wmm_default(sdata
, false, false);
2069 del_timer_sync(&sdata
->u
.mgd
.conn_mon_timer
);
2070 del_timer_sync(&sdata
->u
.mgd
.bcn_mon_timer
);
2071 del_timer_sync(&sdata
->u
.mgd
.timer
);
2072 del_timer_sync(&sdata
->u
.mgd
.chswitch_timer
);
2074 sdata
->vif
.bss_conf
.dtim_period
= 0;
2075 sdata
->vif
.bss_conf
.beacon_rate
= NULL
;
2077 ifmgd
->have_beacon
= false;
2080 mutex_lock(&local
->mtx
);
2081 ieee80211_vif_release_channel(sdata
);
2083 sdata
->vif
.csa_active
= false;
2084 ifmgd
->csa_waiting_bcn
= false;
2085 ifmgd
->csa_ignored_same_chan
= false;
2086 if (sdata
->csa_block_tx
) {
2087 ieee80211_wake_vif_queues(local
, sdata
,
2088 IEEE80211_QUEUE_STOP_REASON_CSA
);
2089 sdata
->csa_block_tx
= false;
2091 mutex_unlock(&local
->mtx
);
2093 /* existing TX TSPEC sessions no longer exist */
2094 memset(ifmgd
->tx_tspec
, 0, sizeof(ifmgd
->tx_tspec
));
2095 cancel_delayed_work_sync(&ifmgd
->tx_tspec_wk
);
2097 sdata
->encrypt_headroom
= IEEE80211_ENCRYPT_HEADROOM
;
2100 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
2101 struct ieee80211_hdr
*hdr
)
2104 * We can postpone the mgd.timer whenever receiving unicast frames
2105 * from AP because we know that the connection is working both ways
2106 * at that time. But multicast frames (and hence also beacons) must
2107 * be ignored here, because we need to trigger the timer during
2108 * data idle periods for sending the periodic probe request to the
2109 * AP we're connected to.
2111 if (is_multicast_ether_addr(hdr
->addr1
))
2114 ieee80211_sta_reset_conn_monitor(sdata
);
2117 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data
*sdata
)
2119 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2120 struct ieee80211_local
*local
= sdata
->local
;
2122 mutex_lock(&local
->mtx
);
2123 if (!(ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
))
2126 __ieee80211_stop_poll(sdata
);
2128 mutex_lock(&local
->iflist_mtx
);
2129 ieee80211_recalc_ps(local
);
2130 mutex_unlock(&local
->iflist_mtx
);
2132 if (ieee80211_hw_check(&sdata
->local
->hw
, CONNECTION_MONITOR
))
2136 * We've received a probe response, but are not sure whether
2137 * we have or will be receiving any beacons or data, so let's
2138 * schedule the timers again, just in case.
2140 ieee80211_sta_reset_beacon_monitor(sdata
);
2142 mod_timer(&ifmgd
->conn_mon_timer
,
2143 round_jiffies_up(jiffies
+
2144 IEEE80211_CONNECTION_IDLE_TIME
));
2146 mutex_unlock(&local
->mtx
);
2149 static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data
*sdata
,
2150 struct ieee80211_hdr
*hdr
,
2153 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2154 u16 tid
= *ieee80211_get_qos_ctl(hdr
) & IEEE80211_QOS_CTL_TID_MASK
;
2155 int ac
= ieee80211_ac_from_tid(tid
);
2156 struct ieee80211_sta_tx_tspec
*tx_tspec
= &ifmgd
->tx_tspec
[ac
];
2157 unsigned long now
= jiffies
;
2159 if (likely(!tx_tspec
->admitted_time
))
2162 if (time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
2163 tx_tspec
->consumed_tx_time
= 0;
2164 tx_tspec
->time_slice_start
= now
;
2166 if (tx_tspec
->downgraded
) {
2167 tx_tspec
->action
= TX_TSPEC_ACTION_STOP_DOWNGRADE
;
2168 schedule_delayed_work(&ifmgd
->tx_tspec_wk
, 0);
2172 if (tx_tspec
->downgraded
)
2175 tx_tspec
->consumed_tx_time
+= tx_time
;
2177 if (tx_tspec
->consumed_tx_time
>= tx_tspec
->admitted_time
) {
2178 tx_tspec
->downgraded
= true;
2179 tx_tspec
->action
= TX_TSPEC_ACTION_DOWNGRADE
;
2180 schedule_delayed_work(&ifmgd
->tx_tspec_wk
, 0);
2184 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data
*sdata
,
2185 struct ieee80211_hdr
*hdr
, bool ack
, u16 tx_time
)
2187 ieee80211_sta_tx_wmm_ac_notify(sdata
, hdr
, tx_time
);
2189 if (!ieee80211_is_data(hdr
->frame_control
))
2192 if (ieee80211_is_nullfunc(hdr
->frame_control
) &&
2193 sdata
->u
.mgd
.probe_send_count
> 0) {
2195 ieee80211_sta_reset_conn_monitor(sdata
);
2197 sdata
->u
.mgd
.nullfunc_failed
= true;
2198 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
2203 ieee80211_sta_reset_conn_monitor(sdata
);
2206 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data
*sdata
)
2208 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2210 u8
*dst
= ifmgd
->associated
->bssid
;
2211 u8 unicast_limit
= max(1, max_probe_tries
- 3);
2212 struct sta_info
*sta
;
2215 * Try sending broadcast probe requests for the last three
2216 * probe requests after the first ones failed since some
2217 * buggy APs only support broadcast probe requests.
2219 if (ifmgd
->probe_send_count
>= unicast_limit
)
2223 * When the hardware reports an accurate Tx ACK status, it's
2224 * better to send a nullfunc frame instead of a probe request,
2225 * as it will kick us off the AP quickly if we aren't associated
2226 * anymore. The timeout will be reset if the frame is ACKed by
2229 ifmgd
->probe_send_count
++;
2232 mutex_lock(&sdata
->local
->sta_mtx
);
2233 sta
= sta_info_get(sdata
, dst
);
2235 ieee80211_check_fast_rx(sta
);
2236 mutex_unlock(&sdata
->local
->sta_mtx
);
2239 if (ieee80211_hw_check(&sdata
->local
->hw
, REPORTS_TX_ACK_STATUS
)) {
2240 ifmgd
->nullfunc_failed
= false;
2241 ieee80211_send_nullfunc(sdata
->local
, sdata
, false);
2246 ssid
= ieee80211_bss_get_ie(ifmgd
->associated
, WLAN_EID_SSID
);
2247 if (WARN_ON_ONCE(ssid
== NULL
))
2252 ieee80211_send_probe_req(sdata
, sdata
->vif
.addr
, dst
,
2253 ssid
+ 2, ssid_len
, NULL
,
2254 0, (u32
) -1, true, 0,
2255 ifmgd
->associated
->channel
, false);
2259 ifmgd
->probe_timeout
= jiffies
+ msecs_to_jiffies(probe_wait_ms
);
2260 run_again(sdata
, ifmgd
->probe_timeout
);
2263 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data
*sdata
,
2266 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2267 bool already
= false;
2269 if (!ieee80211_sdata_running(sdata
))
2274 if (!ifmgd
->associated
)
2277 mutex_lock(&sdata
->local
->mtx
);
2279 if (sdata
->local
->tmp_channel
|| sdata
->local
->scanning
) {
2280 mutex_unlock(&sdata
->local
->mtx
);
2285 mlme_dbg_ratelimited(sdata
,
2286 "detected beacon loss from AP (missed %d beacons) - probing\n",
2289 ieee80211_cqm_beacon_loss_notify(&sdata
->vif
, GFP_KERNEL
);
2293 * The driver/our work has already reported this event or the
2294 * connection monitoring has kicked in and we have already sent
2295 * a probe request. Or maybe the AP died and the driver keeps
2296 * reporting until we disassociate...
2298 * In either case we have to ignore the current call to this
2299 * function (except for setting the correct probe reason bit)
2300 * because otherwise we would reset the timer every time and
2301 * never check whether we received a probe response!
2303 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
2306 ifmgd
->flags
|= IEEE80211_STA_CONNECTION_POLL
;
2308 mutex_unlock(&sdata
->local
->mtx
);
2313 mutex_lock(&sdata
->local
->iflist_mtx
);
2314 ieee80211_recalc_ps(sdata
->local
);
2315 mutex_unlock(&sdata
->local
->iflist_mtx
);
2317 ifmgd
->probe_send_count
= 0;
2318 ieee80211_mgd_probe_ap_send(sdata
);
2320 sdata_unlock(sdata
);
2323 struct sk_buff
*ieee80211_ap_probereq_get(struct ieee80211_hw
*hw
,
2324 struct ieee80211_vif
*vif
)
2326 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2327 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2328 struct cfg80211_bss
*cbss
;
2329 struct sk_buff
*skb
;
2333 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
2336 sdata_assert_lock(sdata
);
2338 if (ifmgd
->associated
)
2339 cbss
= ifmgd
->associated
;
2340 else if (ifmgd
->auth_data
)
2341 cbss
= ifmgd
->auth_data
->bss
;
2342 else if (ifmgd
->assoc_data
)
2343 cbss
= ifmgd
->assoc_data
->bss
;
2348 ssid
= ieee80211_bss_get_ie(cbss
, WLAN_EID_SSID
);
2349 if (WARN_ON_ONCE(ssid
== NULL
))
2354 skb
= ieee80211_build_probe_req(sdata
, sdata
->vif
.addr
, cbss
->bssid
,
2355 (u32
) -1, cbss
->channel
,
2362 EXPORT_SYMBOL(ieee80211_ap_probereq_get
);
2364 static void ieee80211_report_disconnect(struct ieee80211_sub_if_data
*sdata
,
2365 const u8
*buf
, size_t len
, bool tx
,
2368 struct ieee80211_event event
= {
2370 .u
.mlme
.data
= tx
? DEAUTH_TX_EVENT
: DEAUTH_RX_EVENT
,
2371 .u
.mlme
.reason
= reason
,
2375 cfg80211_tx_mlme_mgmt(sdata
->dev
, buf
, len
);
2377 cfg80211_rx_mlme_mgmt(sdata
->dev
, buf
, len
);
2379 drv_event_callback(sdata
->local
, sdata
, &event
);
2382 static void __ieee80211_disconnect(struct ieee80211_sub_if_data
*sdata
)
2384 struct ieee80211_local
*local
= sdata
->local
;
2385 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2386 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
2389 if (!ifmgd
->associated
) {
2390 sdata_unlock(sdata
);
2394 /* AP is probably out of range (or not reachable for another reason) so
2395 * remove the bss struct for that AP.
2397 cfg80211_unlink_bss(local
->hw
.wiphy
, ifmgd
->associated
);
2399 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
2400 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
2402 mutex_lock(&local
->mtx
);
2403 sdata
->vif
.csa_active
= false;
2404 ifmgd
->csa_waiting_bcn
= false;
2405 if (sdata
->csa_block_tx
) {
2406 ieee80211_wake_vif_queues(local
, sdata
,
2407 IEEE80211_QUEUE_STOP_REASON_CSA
);
2408 sdata
->csa_block_tx
= false;
2410 mutex_unlock(&local
->mtx
);
2412 ieee80211_report_disconnect(sdata
, frame_buf
, sizeof(frame_buf
), true,
2413 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
);
2415 sdata_unlock(sdata
);
2418 static void ieee80211_beacon_connection_loss_work(struct work_struct
*work
)
2420 struct ieee80211_sub_if_data
*sdata
=
2421 container_of(work
, struct ieee80211_sub_if_data
,
2422 u
.mgd
.beacon_connection_loss_work
);
2423 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2425 if (ifmgd
->associated
)
2426 ifmgd
->beacon_loss_count
++;
2428 if (ifmgd
->connection_loss
) {
2429 sdata_info(sdata
, "Connection to AP %pM lost\n",
2431 __ieee80211_disconnect(sdata
);
2433 ieee80211_mgd_probe_ap(sdata
, true);
2437 static void ieee80211_csa_connection_drop_work(struct work_struct
*work
)
2439 struct ieee80211_sub_if_data
*sdata
=
2440 container_of(work
, struct ieee80211_sub_if_data
,
2441 u
.mgd
.csa_connection_drop_work
);
2443 __ieee80211_disconnect(sdata
);
2446 void ieee80211_beacon_loss(struct ieee80211_vif
*vif
)
2448 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2449 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2451 trace_api_beacon_loss(sdata
);
2453 sdata
->u
.mgd
.connection_loss
= false;
2454 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2456 EXPORT_SYMBOL(ieee80211_beacon_loss
);
2458 void ieee80211_connection_loss(struct ieee80211_vif
*vif
)
2460 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2461 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2463 trace_api_connection_loss(sdata
);
2465 sdata
->u
.mgd
.connection_loss
= true;
2466 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2468 EXPORT_SYMBOL(ieee80211_connection_loss
);
2471 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data
*sdata
,
2474 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2476 sdata_assert_lock(sdata
);
2480 * we are not authenticated yet, the only timer that could be
2481 * running is the timeout for the authentication response which
2482 * which is not relevant anymore.
2484 del_timer_sync(&sdata
->u
.mgd
.timer
);
2485 sta_info_destroy_addr(sdata
, auth_data
->bss
->bssid
);
2487 eth_zero_addr(sdata
->u
.mgd
.bssid
);
2488 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2489 sdata
->u
.mgd
.flags
= 0;
2490 mutex_lock(&sdata
->local
->mtx
);
2491 ieee80211_vif_release_channel(sdata
);
2492 mutex_unlock(&sdata
->local
->mtx
);
2495 cfg80211_put_bss(sdata
->local
->hw
.wiphy
, auth_data
->bss
);
2497 sdata
->u
.mgd
.auth_data
= NULL
;
2500 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data
*sdata
,
2501 bool assoc
, bool abandon
)
2503 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
2505 sdata_assert_lock(sdata
);
2509 * we are not associated yet, the only timer that could be
2510 * running is the timeout for the association response which
2511 * which is not relevant anymore.
2513 del_timer_sync(&sdata
->u
.mgd
.timer
);
2514 sta_info_destroy_addr(sdata
, assoc_data
->bss
->bssid
);
2516 eth_zero_addr(sdata
->u
.mgd
.bssid
);
2517 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2518 sdata
->u
.mgd
.flags
= 0;
2519 sdata
->vif
.mu_mimo_owner
= false;
2521 mutex_lock(&sdata
->local
->mtx
);
2522 ieee80211_vif_release_channel(sdata
);
2523 mutex_unlock(&sdata
->local
->mtx
);
2526 cfg80211_abandon_assoc(sdata
->dev
, assoc_data
->bss
);
2530 sdata
->u
.mgd
.assoc_data
= NULL
;
2533 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data
*sdata
,
2534 struct ieee80211_mgmt
*mgmt
, size_t len
)
2536 struct ieee80211_local
*local
= sdata
->local
;
2537 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2539 struct ieee802_11_elems elems
;
2542 pos
= mgmt
->u
.auth
.variable
;
2543 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2544 if (!elems
.challenge
)
2546 auth_data
->expected_transaction
= 4;
2547 drv_mgd_prepare_tx(sdata
->local
, sdata
);
2548 if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
2549 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
2550 IEEE80211_TX_INTFL_MLME_CONN_TX
;
2551 ieee80211_send_auth(sdata
, 3, auth_data
->algorithm
, 0,
2552 elems
.challenge
- 2, elems
.challenge_len
+ 2,
2553 auth_data
->bss
->bssid
, auth_data
->bss
->bssid
,
2554 auth_data
->key
, auth_data
->key_len
,
2555 auth_data
->key_idx
, tx_flags
);
2558 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data
*sdata
,
2559 struct ieee80211_mgmt
*mgmt
, size_t len
)
2561 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2563 u16 auth_alg
, auth_transaction
, status_code
;
2564 struct sta_info
*sta
;
2565 struct ieee80211_event event
= {
2567 .u
.mlme
.data
= AUTH_EVENT
,
2570 sdata_assert_lock(sdata
);
2575 if (!ifmgd
->auth_data
|| ifmgd
->auth_data
->done
)
2578 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
2580 if (!ether_addr_equal(bssid
, mgmt
->bssid
))
2583 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
2584 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
2585 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
2587 if (auth_alg
!= ifmgd
->auth_data
->algorithm
||
2588 auth_transaction
!= ifmgd
->auth_data
->expected_transaction
) {
2589 sdata_info(sdata
, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2590 mgmt
->sa
, auth_alg
, ifmgd
->auth_data
->algorithm
,
2592 ifmgd
->auth_data
->expected_transaction
);
2596 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2597 sdata_info(sdata
, "%pM denied authentication (status %d)\n",
2598 mgmt
->sa
, status_code
);
2599 ieee80211_destroy_auth_data(sdata
, false);
2600 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2601 event
.u
.mlme
.status
= MLME_DENIED
;
2602 event
.u
.mlme
.reason
= status_code
;
2603 drv_event_callback(sdata
->local
, sdata
, &event
);
2607 switch (ifmgd
->auth_data
->algorithm
) {
2608 case WLAN_AUTH_OPEN
:
2609 case WLAN_AUTH_LEAP
:
2612 case WLAN_AUTH_FILS_SK
:
2613 case WLAN_AUTH_FILS_SK_PFS
:
2614 case WLAN_AUTH_FILS_PK
:
2616 case WLAN_AUTH_SHARED_KEY
:
2617 if (ifmgd
->auth_data
->expected_transaction
!= 4) {
2618 ieee80211_auth_challenge(sdata
, mgmt
, len
);
2619 /* need another frame */
2624 WARN_ONCE(1, "invalid auth alg %d",
2625 ifmgd
->auth_data
->algorithm
);
2629 event
.u
.mlme
.status
= MLME_SUCCESS
;
2630 drv_event_callback(sdata
->local
, sdata
, &event
);
2631 sdata_info(sdata
, "authenticated\n");
2632 ifmgd
->auth_data
->done
= true;
2633 ifmgd
->auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_WAIT_ASSOC
;
2634 ifmgd
->auth_data
->timeout_started
= true;
2635 run_again(sdata
, ifmgd
->auth_data
->timeout
);
2637 if (ifmgd
->auth_data
->algorithm
== WLAN_AUTH_SAE
&&
2638 ifmgd
->auth_data
->expected_transaction
!= 2) {
2640 * Report auth frame to user space for processing since another
2641 * round of Authentication frames is still needed.
2643 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2647 /* move station state to auth */
2648 mutex_lock(&sdata
->local
->sta_mtx
);
2649 sta
= sta_info_get(sdata
, bssid
);
2651 WARN_ONCE(1, "%s: STA %pM not found", sdata
->name
, bssid
);
2654 if (sta_info_move_state(sta
, IEEE80211_STA_AUTH
)) {
2655 sdata_info(sdata
, "failed moving %pM to auth\n", bssid
);
2658 mutex_unlock(&sdata
->local
->sta_mtx
);
2660 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2663 mutex_unlock(&sdata
->local
->sta_mtx
);
2664 /* ignore frame -- wait for timeout */
2667 #define case_WLAN(type) \
2668 case WLAN_REASON_##type: return #type
2670 static const char *ieee80211_get_reason_code_string(u16 reason_code
)
2672 switch (reason_code
) {
2673 case_WLAN(UNSPECIFIED
);
2674 case_WLAN(PREV_AUTH_NOT_VALID
);
2675 case_WLAN(DEAUTH_LEAVING
);
2676 case_WLAN(DISASSOC_DUE_TO_INACTIVITY
);
2677 case_WLAN(DISASSOC_AP_BUSY
);
2678 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA
);
2679 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA
);
2680 case_WLAN(DISASSOC_STA_HAS_LEFT
);
2681 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH
);
2682 case_WLAN(DISASSOC_BAD_POWER
);
2683 case_WLAN(DISASSOC_BAD_SUPP_CHAN
);
2684 case_WLAN(INVALID_IE
);
2685 case_WLAN(MIC_FAILURE
);
2686 case_WLAN(4WAY_HANDSHAKE_TIMEOUT
);
2687 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT
);
2688 case_WLAN(IE_DIFFERENT
);
2689 case_WLAN(INVALID_GROUP_CIPHER
);
2690 case_WLAN(INVALID_PAIRWISE_CIPHER
);
2691 case_WLAN(INVALID_AKMP
);
2692 case_WLAN(UNSUPP_RSN_VERSION
);
2693 case_WLAN(INVALID_RSN_IE_CAP
);
2694 case_WLAN(IEEE8021X_FAILED
);
2695 case_WLAN(CIPHER_SUITE_REJECTED
);
2696 case_WLAN(DISASSOC_UNSPECIFIED_QOS
);
2697 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH
);
2698 case_WLAN(DISASSOC_LOW_ACK
);
2699 case_WLAN(DISASSOC_QAP_EXCEED_TXOP
);
2700 case_WLAN(QSTA_LEAVE_QBSS
);
2701 case_WLAN(QSTA_NOT_USE
);
2702 case_WLAN(QSTA_REQUIRE_SETUP
);
2703 case_WLAN(QSTA_TIMEOUT
);
2704 case_WLAN(QSTA_CIPHER_NOT_SUPP
);
2705 case_WLAN(MESH_PEER_CANCELED
);
2706 case_WLAN(MESH_MAX_PEERS
);
2707 case_WLAN(MESH_CONFIG
);
2708 case_WLAN(MESH_CLOSE
);
2709 case_WLAN(MESH_MAX_RETRIES
);
2710 case_WLAN(MESH_CONFIRM_TIMEOUT
);
2711 case_WLAN(MESH_INVALID_GTK
);
2712 case_WLAN(MESH_INCONSISTENT_PARAM
);
2713 case_WLAN(MESH_INVALID_SECURITY
);
2714 case_WLAN(MESH_PATH_ERROR
);
2715 case_WLAN(MESH_PATH_NOFORWARD
);
2716 case_WLAN(MESH_PATH_DEST_UNREACHABLE
);
2717 case_WLAN(MAC_EXISTS_IN_MBSS
);
2718 case_WLAN(MESH_CHAN_REGULATORY
);
2719 case_WLAN(MESH_CHAN
);
2720 default: return "<unknown>";
2724 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data
*sdata
,
2725 struct ieee80211_mgmt
*mgmt
, size_t len
)
2727 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2728 u16 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
2730 sdata_assert_lock(sdata
);
2735 if (ifmgd
->associated
&&
2736 ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
)) {
2737 const u8
*bssid
= ifmgd
->associated
->bssid
;
2739 sdata_info(sdata
, "deauthenticated from %pM (Reason: %u=%s)\n",
2741 ieee80211_get_reason_code_string(reason_code
));
2743 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2745 ieee80211_report_disconnect(sdata
, (u8
*)mgmt
, len
, false,
2750 if (ifmgd
->assoc_data
&&
2751 ether_addr_equal(mgmt
->bssid
, ifmgd
->assoc_data
->bss
->bssid
)) {
2752 const u8
*bssid
= ifmgd
->assoc_data
->bss
->bssid
;
2755 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
2757 ieee80211_get_reason_code_string(reason_code
));
2759 ieee80211_destroy_assoc_data(sdata
, false, true);
2761 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2767 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data
*sdata
,
2768 struct ieee80211_mgmt
*mgmt
, size_t len
)
2770 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2773 sdata_assert_lock(sdata
);
2778 if (!ifmgd
->associated
||
2779 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2782 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
2784 sdata_info(sdata
, "disassociated from %pM (Reason: %u=%s)\n",
2785 mgmt
->sa
, reason_code
,
2786 ieee80211_get_reason_code_string(reason_code
));
2788 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2790 ieee80211_report_disconnect(sdata
, (u8
*)mgmt
, len
, false, reason_code
);
2793 static void ieee80211_get_rates(struct ieee80211_supported_band
*sband
,
2794 u8
*supp_rates
, unsigned int supp_rates_len
,
2795 u32
*rates
, u32
*basic_rates
,
2796 bool *have_higher_than_11mbit
,
2797 int *min_rate
, int *min_rate_index
,
2802 for (i
= 0; i
< supp_rates_len
; i
++) {
2803 int rate
= supp_rates
[i
] & 0x7f;
2804 bool is_basic
= !!(supp_rates
[i
] & 0x80);
2806 if ((rate
* 5 * (1 << shift
)) > 110)
2807 *have_higher_than_11mbit
= true;
2810 * Skip HT and VHT BSS membership selectors since they're not
2813 * Note: Even though the membership selector and the basic
2814 * rate flag share the same bit, they are not exactly
2817 if (supp_rates
[i
] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY
) ||
2818 supp_rates
[i
] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY
))
2821 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2822 struct ieee80211_rate
*br
;
2825 br
= &sband
->bitrates
[j
];
2827 brate
= DIV_ROUND_UP(br
->bitrate
, (1 << shift
) * 5);
2828 if (brate
== rate
) {
2831 *basic_rates
|= BIT(j
);
2832 if ((rate
* 5) < *min_rate
) {
2833 *min_rate
= rate
* 5;
2834 *min_rate_index
= j
;
2842 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data
*sdata
,
2843 struct cfg80211_bss
*cbss
,
2844 struct ieee80211_mgmt
*mgmt
, size_t len
)
2846 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2847 struct ieee80211_local
*local
= sdata
->local
;
2848 struct ieee80211_supported_band
*sband
;
2849 struct sta_info
*sta
;
2851 u16 capab_info
, aid
;
2852 struct ieee802_11_elems elems
;
2853 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
2854 const struct cfg80211_bss_ies
*bss_ies
= NULL
;
2855 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
2860 /* AssocResp and ReassocResp have identical structure */
2862 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2863 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2865 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2866 sdata_info(sdata
, "invalid AID value 0x%x; bits 15:14 not set\n",
2868 aid
&= ~(BIT(15) | BIT(14));
2870 ifmgd
->broken_ap
= false;
2872 if (aid
== 0 || aid
> IEEE80211_MAX_AID
) {
2873 sdata_info(sdata
, "invalid AID value %d (out of range), turn off PS\n",
2876 ifmgd
->broken_ap
= true;
2879 pos
= mgmt
->u
.assoc_resp
.variable
;
2880 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2882 if (!elems
.supp_rates
) {
2883 sdata_info(sdata
, "no SuppRates element in AssocResp\n");
2888 ifmgd
->tdls_chan_switch_prohibited
=
2889 elems
.ext_capab
&& elems
.ext_capab_len
>= 5 &&
2890 (elems
.ext_capab
[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED
);
2893 * Some APs are erroneously not including some information in their
2894 * (re)association response frames. Try to recover by using the data
2895 * from the beacon or probe response. This seems to afflict mobile
2896 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2897 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2899 if ((assoc_data
->wmm
&& !elems
.wmm_param
) ||
2900 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2901 (!elems
.ht_cap_elem
|| !elems
.ht_operation
)) ||
2902 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2903 (!elems
.vht_cap_elem
|| !elems
.vht_operation
))) {
2904 const struct cfg80211_bss_ies
*ies
;
2905 struct ieee802_11_elems bss_elems
;
2908 ies
= rcu_dereference(cbss
->ies
);
2910 bss_ies
= kmemdup(ies
, sizeof(*ies
) + ies
->len
,
2916 ieee802_11_parse_elems(bss_ies
->data
, bss_ies
->len
,
2918 if (assoc_data
->wmm
&&
2919 !elems
.wmm_param
&& bss_elems
.wmm_param
) {
2920 elems
.wmm_param
= bss_elems
.wmm_param
;
2922 "AP bug: WMM param missing from AssocResp\n");
2926 * Also check if we requested HT/VHT, otherwise the AP doesn't
2927 * have to include the IEs in the (re)association response.
2929 if (!elems
.ht_cap_elem
&& bss_elems
.ht_cap_elem
&&
2930 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2931 elems
.ht_cap_elem
= bss_elems
.ht_cap_elem
;
2933 "AP bug: HT capability missing from AssocResp\n");
2935 if (!elems
.ht_operation
&& bss_elems
.ht_operation
&&
2936 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2937 elems
.ht_operation
= bss_elems
.ht_operation
;
2939 "AP bug: HT operation missing from AssocResp\n");
2941 if (!elems
.vht_cap_elem
&& bss_elems
.vht_cap_elem
&&
2942 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2943 elems
.vht_cap_elem
= bss_elems
.vht_cap_elem
;
2945 "AP bug: VHT capa missing from AssocResp\n");
2947 if (!elems
.vht_operation
&& bss_elems
.vht_operation
&&
2948 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2949 elems
.vht_operation
= bss_elems
.vht_operation
;
2951 "AP bug: VHT operation missing from AssocResp\n");
2956 * We previously checked these in the beacon/probe response, so
2957 * they should be present here. This is just a safety net.
2959 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2960 (!elems
.wmm_param
|| !elems
.ht_cap_elem
|| !elems
.ht_operation
)) {
2962 "HT AP is missing WMM params or HT capability/operation\n");
2967 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2968 (!elems
.vht_cap_elem
|| !elems
.vht_operation
)) {
2970 "VHT AP is missing VHT capability/operation\n");
2975 mutex_lock(&sdata
->local
->sta_mtx
);
2977 * station info was already allocated and inserted before
2978 * the association and should be available to us
2980 sta
= sta_info_get(sdata
, cbss
->bssid
);
2981 if (WARN_ON(!sta
)) {
2982 mutex_unlock(&sdata
->local
->sta_mtx
);
2987 sband
= ieee80211_get_sband(sdata
);
2989 mutex_unlock(&sdata
->local
->sta_mtx
);
2994 /* Set up internal HT/VHT capabilities */
2995 if (elems
.ht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
2996 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata
, sband
,
2997 elems
.ht_cap_elem
, sta
);
2999 if (elems
.vht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
3000 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata
, sband
,
3001 elems
.vht_cap_elem
, sta
);
3004 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
3005 * in their association response, so ignore that data for our own
3006 * configuration. If it changed since the last beacon, we'll get the
3007 * next beacon and update then.
3011 * If an operating mode notification IE is present, override the
3012 * NSS calculation (that would be done in rate_control_rate_init())
3013 * and use the # of streams from that element.
3015 if (elems
.opmode_notif
&&
3016 !(*elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF
)) {
3019 nss
= *elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_MASK
;
3020 nss
>>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT
;
3022 sta
->sta
.rx_nss
= nss
;
3025 rate_control_rate_init(sta
);
3027 if (ifmgd
->flags
& IEEE80211_STA_MFP_ENABLED
) {
3028 set_sta_flag(sta
, WLAN_STA_MFP
);
3029 sta
->sta
.mfp
= true;
3031 sta
->sta
.mfp
= false;
3034 sta
->sta
.wme
= elems
.wmm_param
&& local
->hw
.queues
>= IEEE80211_NUM_ACS
;
3036 err
= sta_info_move_state(sta
, IEEE80211_STA_ASSOC
);
3037 if (!err
&& !(ifmgd
->flags
& IEEE80211_STA_CONTROL_PORT
))
3038 err
= sta_info_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
3041 "failed to move station %pM to desired state\n",
3043 WARN_ON(__sta_info_destroy(sta
));
3044 mutex_unlock(&sdata
->local
->sta_mtx
);
3049 mutex_unlock(&sdata
->local
->sta_mtx
);
3052 * Always handle WMM once after association regardless
3053 * of the first value the AP uses. Setting -1 here has
3054 * that effect because the AP values is an unsigned
3057 ifmgd
->wmm_last_param_set
= -1;
3059 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) {
3060 ieee80211_set_wmm_default(sdata
, false, false);
3061 } else if (!ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
3062 elems
.wmm_param_len
)) {
3063 /* still enable QoS since we might have HT/VHT */
3064 ieee80211_set_wmm_default(sdata
, false, true);
3065 /* set the disable-WMM flag in this case to disable
3066 * tracking WMM parameter changes in the beacon if
3067 * the parameters weren't actually valid. Doing so
3068 * avoids changing parameters very strangely when
3069 * the AP is going back and forth between valid and
3070 * invalid parameters.
3072 ifmgd
->flags
|= IEEE80211_STA_DISABLE_WMM
;
3074 changed
|= BSS_CHANGED_QOS
;
3076 if (elems
.max_idle_period_ie
) {
3077 bss_conf
->max_idle_period
=
3078 le16_to_cpu(elems
.max_idle_period_ie
->max_idle_period
);
3079 bss_conf
->protected_keep_alive
=
3080 !!(elems
.max_idle_period_ie
->idle_options
&
3081 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE
);
3082 changed
|= BSS_CHANGED_KEEP_ALIVE
;
3084 bss_conf
->max_idle_period
= 0;
3085 bss_conf
->protected_keep_alive
= false;
3088 /* set AID and assoc capability,
3089 * ieee80211_set_associated() will tell the driver */
3090 bss_conf
->aid
= aid
;
3091 bss_conf
->assoc_capability
= capab_info
;
3092 ieee80211_set_associated(sdata
, cbss
, changed
);
3095 * If we're using 4-addr mode, let the AP know that we're
3096 * doing so, so that it can create the STA VLAN on its side
3098 if (ifmgd
->use_4addr
)
3099 ieee80211_send_4addr_nullfunc(local
, sdata
);
3102 * Start timer to probe the connection to the AP now.
3103 * Also start the timer that will detect beacon loss.
3105 ieee80211_sta_rx_notify(sdata
, (struct ieee80211_hdr
*)mgmt
);
3106 ieee80211_sta_reset_beacon_monitor(sdata
);
3114 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
3115 struct ieee80211_mgmt
*mgmt
,
3118 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3119 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
3120 u16 capab_info
, status_code
, aid
;
3121 struct ieee802_11_elems elems
;
3122 int ac
, uapsd_queues
= -1;
3125 struct cfg80211_bss
*bss
;
3126 struct ieee80211_event event
= {
3128 .u
.mlme
.data
= ASSOC_EVENT
,
3131 sdata_assert_lock(sdata
);
3135 if (!ether_addr_equal(assoc_data
->bss
->bssid
, mgmt
->bssid
))
3139 * AssocResp and ReassocResp have identical structure, so process both
3140 * of them in this function.
3146 reassoc
= ieee80211_is_reassoc_resp(mgmt
->frame_control
);
3147 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
3148 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
3149 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
3152 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3153 reassoc
? "Rea" : "A", mgmt
->sa
,
3154 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
3156 if (assoc_data
->fils_kek_len
&&
3157 fils_decrypt_assoc_resp(sdata
, (u8
*)mgmt
, &len
, assoc_data
) < 0)
3160 pos
= mgmt
->u
.assoc_resp
.variable
;
3161 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
3163 if (status_code
== WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY
&&
3164 elems
.timeout_int
&&
3165 elems
.timeout_int
->type
== WLAN_TIMEOUT_ASSOC_COMEBACK
) {
3167 tu
= le32_to_cpu(elems
.timeout_int
->value
);
3168 ms
= tu
* 1024 / 1000;
3170 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3172 assoc_data
->timeout
= jiffies
+ msecs_to_jiffies(ms
);
3173 assoc_data
->timeout_started
= true;
3174 if (ms
> IEEE80211_ASSOC_TIMEOUT
)
3175 run_again(sdata
, assoc_data
->timeout
);
3179 bss
= assoc_data
->bss
;
3181 if (status_code
!= WLAN_STATUS_SUCCESS
) {
3182 sdata_info(sdata
, "%pM denied association (code=%d)\n",
3183 mgmt
->sa
, status_code
);
3184 ieee80211_destroy_assoc_data(sdata
, false, false);
3185 event
.u
.mlme
.status
= MLME_DENIED
;
3186 event
.u
.mlme
.reason
= status_code
;
3187 drv_event_callback(sdata
->local
, sdata
, &event
);
3189 if (!ieee80211_assoc_success(sdata
, bss
, mgmt
, len
)) {
3190 /* oops -- internal error -- send timeout for now */
3191 ieee80211_destroy_assoc_data(sdata
, false, false);
3192 cfg80211_assoc_timeout(sdata
->dev
, bss
);
3195 event
.u
.mlme
.status
= MLME_SUCCESS
;
3196 drv_event_callback(sdata
->local
, sdata
, &event
);
3197 sdata_info(sdata
, "associated\n");
3200 * destroy assoc_data afterwards, as otherwise an idle
3201 * recalc after assoc_data is NULL but before associated
3202 * is set can cause the interface to go idle
3204 ieee80211_destroy_assoc_data(sdata
, true, false);
3206 /* get uapsd queues configuration */
3208 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
3209 if (sdata
->tx_conf
[ac
].uapsd
)
3210 uapsd_queues
|= ieee80211_ac_to_qos_mask
[ac
];
3213 cfg80211_rx_assoc_resp(sdata
->dev
, bss
, (u8
*)mgmt
, len
, uapsd_queues
);
3216 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data
*sdata
,
3217 struct ieee80211_mgmt
*mgmt
, size_t len
,
3218 struct ieee80211_rx_status
*rx_status
,
3219 struct ieee802_11_elems
*elems
)
3221 struct ieee80211_local
*local
= sdata
->local
;
3222 struct ieee80211_bss
*bss
;
3223 struct ieee80211_channel
*channel
;
3225 sdata_assert_lock(sdata
);
3227 channel
= ieee80211_get_channel(local
->hw
.wiphy
, rx_status
->freq
);
3231 bss
= ieee80211_bss_info_update(local
, rx_status
, mgmt
, len
, elems
,
3234 sdata
->vif
.bss_conf
.beacon_rate
= bss
->beacon_rate
;
3235 ieee80211_rx_bss_put(local
, bss
);
3240 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data
*sdata
,
3241 struct sk_buff
*skb
)
3243 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
3244 struct ieee80211_if_managed
*ifmgd
;
3245 struct ieee80211_rx_status
*rx_status
= (void *) skb
->cb
;
3246 size_t baselen
, len
= skb
->len
;
3247 struct ieee802_11_elems elems
;
3249 ifmgd
= &sdata
->u
.mgd
;
3251 sdata_assert_lock(sdata
);
3253 if (!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
3254 return; /* ignore ProbeResp to foreign address */
3256 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
3260 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
3263 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3265 if (ifmgd
->associated
&&
3266 ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
3267 ieee80211_reset_ap_probe(sdata
);
3271 * This is the canonical list of information elements we care about,
3272 * the filter code also gives us all changes to the Microsoft OUI
3273 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3274 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3275 * changes to requested client power.
3277 * We implement beacon filtering in software since that means we can
3278 * avoid processing the frame here and in cfg80211, and userspace
3279 * will not be able to tell whether the hardware supports it or not.
3281 * XXX: This list needs to be dynamic -- userspace needs to be able to
3282 * add items it requires. It also needs to be able to tell us to
3283 * look out for other vendor IEs.
3285 static const u64 care_about_ies
=
3286 (1ULL << WLAN_EID_COUNTRY
) |
3287 (1ULL << WLAN_EID_ERP_INFO
) |
3288 (1ULL << WLAN_EID_CHANNEL_SWITCH
) |
3289 (1ULL << WLAN_EID_PWR_CONSTRAINT
) |
3290 (1ULL << WLAN_EID_HT_CAPABILITY
) |
3291 (1ULL << WLAN_EID_HT_OPERATION
) |
3292 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN
);
3294 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data
*sdata
,
3295 struct ieee80211_mgmt
*mgmt
, size_t len
,
3296 struct ieee80211_rx_status
*rx_status
)
3298 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3299 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
3301 struct ieee802_11_elems elems
;
3302 struct ieee80211_local
*local
= sdata
->local
;
3303 struct ieee80211_chanctx_conf
*chanctx_conf
;
3304 struct ieee80211_channel
*chan
;
3305 struct sta_info
*sta
;
3311 u8 deauth_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3313 sdata_assert_lock(sdata
);
3315 /* Process beacon from the current BSS */
3316 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
3321 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
3322 if (!chanctx_conf
) {
3327 if (rx_status
->freq
!= chanctx_conf
->def
.chan
->center_freq
) {
3331 chan
= chanctx_conf
->def
.chan
;
3334 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->need_beacon
&&
3335 ether_addr_equal(mgmt
->bssid
, ifmgd
->assoc_data
->bss
->bssid
)) {
3336 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
,
3337 len
- baselen
, false, &elems
);
3339 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3340 if (elems
.tim
&& !elems
.parse_error
) {
3341 const struct ieee80211_tim_ie
*tim_ie
= elems
.tim
;
3342 ifmgd
->dtim_period
= tim_ie
->dtim_period
;
3344 ifmgd
->have_beacon
= true;
3345 ifmgd
->assoc_data
->need_beacon
= false;
3346 if (ieee80211_hw_check(&local
->hw
, TIMING_BEACON_ONLY
)) {
3347 sdata
->vif
.bss_conf
.sync_tsf
=
3348 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3349 sdata
->vif
.bss_conf
.sync_device_ts
=
3350 rx_status
->device_timestamp
;
3352 sdata
->vif
.bss_conf
.sync_dtim_count
=
3353 elems
.tim
->dtim_count
;
3355 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3357 /* continue assoc process */
3358 ifmgd
->assoc_data
->timeout
= jiffies
;
3359 ifmgd
->assoc_data
->timeout_started
= true;
3360 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3364 if (!ifmgd
->associated
||
3365 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
3367 bssid
= ifmgd
->associated
->bssid
;
3369 /* Track average RSSI from the Beacon frames of the current AP */
3370 if (ifmgd
->flags
& IEEE80211_STA_RESET_SIGNAL_AVE
) {
3371 ifmgd
->flags
&= ~IEEE80211_STA_RESET_SIGNAL_AVE
;
3372 ewma_beacon_signal_init(&ifmgd
->ave_beacon_signal
);
3373 ifmgd
->last_cqm_event_signal
= 0;
3374 ifmgd
->count_beacon_signal
= 1;
3375 ifmgd
->last_ave_beacon_signal
= 0;
3377 ifmgd
->count_beacon_signal
++;
3380 ewma_beacon_signal_add(&ifmgd
->ave_beacon_signal
, -rx_status
->signal
);
3382 if (ifmgd
->rssi_min_thold
!= ifmgd
->rssi_max_thold
&&
3383 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
) {
3384 int sig
= -ewma_beacon_signal_read(&ifmgd
->ave_beacon_signal
);
3385 int last_sig
= ifmgd
->last_ave_beacon_signal
;
3386 struct ieee80211_event event
= {
3391 * if signal crosses either of the boundaries, invoke callback
3392 * with appropriate parameters
3394 if (sig
> ifmgd
->rssi_max_thold
&&
3395 (last_sig
<= ifmgd
->rssi_min_thold
|| last_sig
== 0)) {
3396 ifmgd
->last_ave_beacon_signal
= sig
;
3397 event
.u
.rssi
.data
= RSSI_EVENT_HIGH
;
3398 drv_event_callback(local
, sdata
, &event
);
3399 } else if (sig
< ifmgd
->rssi_min_thold
&&
3400 (last_sig
>= ifmgd
->rssi_max_thold
||
3402 ifmgd
->last_ave_beacon_signal
= sig
;
3403 event
.u
.rssi
.data
= RSSI_EVENT_LOW
;
3404 drv_event_callback(local
, sdata
, &event
);
3408 if (bss_conf
->cqm_rssi_thold
&&
3409 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
&&
3410 !(sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
)) {
3411 int sig
= -ewma_beacon_signal_read(&ifmgd
->ave_beacon_signal
);
3412 int last_event
= ifmgd
->last_cqm_event_signal
;
3413 int thold
= bss_conf
->cqm_rssi_thold
;
3414 int hyst
= bss_conf
->cqm_rssi_hyst
;
3417 (last_event
== 0 || sig
< last_event
- hyst
)) {
3418 ifmgd
->last_cqm_event_signal
= sig
;
3419 ieee80211_cqm_rssi_notify(
3421 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
3423 } else if (sig
> thold
&&
3424 (last_event
== 0 || sig
> last_event
+ hyst
)) {
3425 ifmgd
->last_cqm_event_signal
= sig
;
3426 ieee80211_cqm_rssi_notify(
3428 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
3433 if (bss_conf
->cqm_rssi_low
&&
3434 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
) {
3435 int sig
= -ewma_beacon_signal_read(&ifmgd
->ave_beacon_signal
);
3436 int last_event
= ifmgd
->last_cqm_event_signal
;
3437 int low
= bss_conf
->cqm_rssi_low
;
3438 int high
= bss_conf
->cqm_rssi_high
;
3441 (last_event
== 0 || last_event
>= low
)) {
3442 ifmgd
->last_cqm_event_signal
= sig
;
3443 ieee80211_cqm_rssi_notify(
3445 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
3447 } else if (sig
> high
&&
3448 (last_event
== 0 || last_event
<= high
)) {
3449 ifmgd
->last_cqm_event_signal
= sig
;
3450 ieee80211_cqm_rssi_notify(
3452 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
3457 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
) {
3458 mlme_dbg_ratelimited(sdata
,
3459 "cancelling AP probe due to a received beacon\n");
3460 ieee80211_reset_ap_probe(sdata
);
3464 * Push the beacon loss detection into the future since
3465 * we are processing a beacon from the AP just now.
3467 ieee80211_sta_reset_beacon_monitor(sdata
);
3469 ncrc
= crc32_be(0, (void *)&mgmt
->u
.beacon
.beacon_int
, 4);
3470 ncrc
= ieee802_11_parse_elems_crc(mgmt
->u
.beacon
.variable
,
3471 len
- baselen
, false, &elems
,
3472 care_about_ies
, ncrc
);
3474 if (ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
) &&
3475 ieee80211_check_tim(elems
.tim
, elems
.tim_len
, ifmgd
->aid
)) {
3476 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
3477 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
3478 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
3479 ieee80211_hw_config(local
,
3480 IEEE80211_CONF_CHANGE_PS
);
3482 ieee80211_send_nullfunc(local
, sdata
, false);
3483 } else if (!local
->pspolling
&& sdata
->u
.mgd
.powersave
) {
3484 local
->pspolling
= true;
3487 * Here is assumed that the driver will be
3488 * able to send ps-poll frame and receive a
3489 * response even though power save mode is
3490 * enabled, but some drivers might require
3491 * to disable power save here. This needs
3492 * to be investigated.
3494 ieee80211_send_pspoll(local
, sdata
);
3498 if (sdata
->vif
.p2p
||
3499 sdata
->vif
.driver_flags
& IEEE80211_VIF_GET_NOA_UPDATE
) {
3500 struct ieee80211_p2p_noa_attr noa
= {};
3503 ret
= cfg80211_get_p2p_attr(mgmt
->u
.beacon
.variable
,
3505 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
3506 (u8
*) &noa
, sizeof(noa
));
3508 if (sdata
->u
.mgd
.p2p_noa_index
!= noa
.index
) {
3509 /* valid noa_attr and index changed */
3510 sdata
->u
.mgd
.p2p_noa_index
= noa
.index
;
3511 memcpy(&bss_conf
->p2p_noa_attr
, &noa
, sizeof(noa
));
3512 changed
|= BSS_CHANGED_P2P_PS
;
3514 * make sure we update all information, the CRC
3515 * mechanism doesn't look at P2P attributes.
3517 ifmgd
->beacon_crc_valid
= false;
3519 } else if (sdata
->u
.mgd
.p2p_noa_index
!= -1) {
3520 /* noa_attr not found and we had valid noa_attr before */
3521 sdata
->u
.mgd
.p2p_noa_index
= -1;
3522 memset(&bss_conf
->p2p_noa_attr
, 0, sizeof(bss_conf
->p2p_noa_attr
));
3523 changed
|= BSS_CHANGED_P2P_PS
;
3524 ifmgd
->beacon_crc_valid
= false;
3528 if (ifmgd
->csa_waiting_bcn
)
3529 ieee80211_chswitch_post_beacon(sdata
);
3532 * Update beacon timing and dtim count on every beacon appearance. This
3533 * will allow the driver to use the most updated values. Do it before
3534 * comparing this one with last received beacon.
3535 * IMPORTANT: These parameters would possibly be out of sync by the time
3536 * the driver will use them. The synchronized view is currently
3537 * guaranteed only in certain callbacks.
3539 if (ieee80211_hw_check(&local
->hw
, TIMING_BEACON_ONLY
)) {
3540 sdata
->vif
.bss_conf
.sync_tsf
=
3541 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3542 sdata
->vif
.bss_conf
.sync_device_ts
=
3543 rx_status
->device_timestamp
;
3545 sdata
->vif
.bss_conf
.sync_dtim_count
=
3546 elems
.tim
->dtim_count
;
3548 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3551 if (ncrc
== ifmgd
->beacon_crc
&& ifmgd
->beacon_crc_valid
)
3553 ifmgd
->beacon_crc
= ncrc
;
3554 ifmgd
->beacon_crc_valid
= true;
3556 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3558 ieee80211_sta_process_chanswitch(sdata
, rx_status
->mactime
,
3559 rx_status
->device_timestamp
,
3562 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) &&
3563 ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
3564 elems
.wmm_param_len
))
3565 changed
|= BSS_CHANGED_QOS
;
3568 * If we haven't had a beacon before, tell the driver about the
3569 * DTIM period (and beacon timing if desired) now.
3571 if (!ifmgd
->have_beacon
) {
3572 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3574 bss_conf
->dtim_period
= elems
.tim
->dtim_period
?: 1;
3576 bss_conf
->dtim_period
= 1;
3578 changed
|= BSS_CHANGED_BEACON_INFO
;
3579 ifmgd
->have_beacon
= true;
3581 mutex_lock(&local
->iflist_mtx
);
3582 ieee80211_recalc_ps(local
);
3583 mutex_unlock(&local
->iflist_mtx
);
3585 ieee80211_recalc_ps_vif(sdata
);
3588 if (elems
.erp_info
) {
3590 erp_value
= elems
.erp_info
[0];
3594 changed
|= ieee80211_handle_bss_capability(sdata
,
3595 le16_to_cpu(mgmt
->u
.beacon
.capab_info
),
3596 erp_valid
, erp_value
);
3598 mutex_lock(&local
->sta_mtx
);
3599 sta
= sta_info_get(sdata
, bssid
);
3601 if (ieee80211_config_bw(sdata
, sta
,
3602 elems
.ht_cap_elem
, elems
.ht_operation
,
3603 elems
.vht_operation
, bssid
, &changed
)) {
3604 mutex_unlock(&local
->sta_mtx
);
3606 "failed to follow AP %pM bandwidth change, disconnect\n",
3608 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
3609 WLAN_REASON_DEAUTH_LEAVING
,
3611 ieee80211_report_disconnect(sdata
, deauth_buf
,
3612 sizeof(deauth_buf
), true,
3613 WLAN_REASON_DEAUTH_LEAVING
);
3617 if (sta
&& elems
.opmode_notif
)
3618 ieee80211_vht_handle_opmode(sdata
, sta
, *elems
.opmode_notif
,
3620 mutex_unlock(&local
->sta_mtx
);
3622 changed
|= ieee80211_handle_pwr_constr(sdata
, chan
, mgmt
,
3624 elems
.country_elem_len
,
3625 elems
.pwr_constr_elem
,
3626 elems
.cisco_dtpc_elem
);
3628 ieee80211_bss_info_change_notify(sdata
, changed
);
3631 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
3632 struct sk_buff
*skb
)
3634 struct ieee80211_rx_status
*rx_status
;
3635 struct ieee80211_mgmt
*mgmt
;
3637 struct ieee802_11_elems elems
;
3640 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3641 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3642 fc
= le16_to_cpu(mgmt
->frame_control
);
3646 switch (fc
& IEEE80211_FCTL_STYPE
) {
3647 case IEEE80211_STYPE_BEACON
:
3648 ieee80211_rx_mgmt_beacon(sdata
, mgmt
, skb
->len
, rx_status
);
3650 case IEEE80211_STYPE_PROBE_RESP
:
3651 ieee80211_rx_mgmt_probe_resp(sdata
, skb
);
3653 case IEEE80211_STYPE_AUTH
:
3654 ieee80211_rx_mgmt_auth(sdata
, mgmt
, skb
->len
);
3656 case IEEE80211_STYPE_DEAUTH
:
3657 ieee80211_rx_mgmt_deauth(sdata
, mgmt
, skb
->len
);
3659 case IEEE80211_STYPE_DISASSOC
:
3660 ieee80211_rx_mgmt_disassoc(sdata
, mgmt
, skb
->len
);
3662 case IEEE80211_STYPE_ASSOC_RESP
:
3663 case IEEE80211_STYPE_REASSOC_RESP
:
3664 ieee80211_rx_mgmt_assoc_resp(sdata
, mgmt
, skb
->len
);
3666 case IEEE80211_STYPE_ACTION
:
3667 if (mgmt
->u
.action
.category
== WLAN_CATEGORY_SPECTRUM_MGMT
) {
3668 ies_len
= skb
->len
-
3669 offsetof(struct ieee80211_mgmt
,
3670 u
.action
.u
.chan_switch
.variable
);
3675 ieee802_11_parse_elems(
3676 mgmt
->u
.action
.u
.chan_switch
.variable
,
3677 ies_len
, true, &elems
);
3679 if (elems
.parse_error
)
3682 ieee80211_sta_process_chanswitch(sdata
,
3684 rx_status
->device_timestamp
,
3686 } else if (mgmt
->u
.action
.category
== WLAN_CATEGORY_PUBLIC
) {
3687 ies_len
= skb
->len
-
3688 offsetof(struct ieee80211_mgmt
,
3689 u
.action
.u
.ext_chan_switch
.variable
);
3694 ieee802_11_parse_elems(
3695 mgmt
->u
.action
.u
.ext_chan_switch
.variable
,
3696 ies_len
, true, &elems
);
3698 if (elems
.parse_error
)
3701 /* for the handling code pretend this was also an IE */
3702 elems
.ext_chansw_ie
=
3703 &mgmt
->u
.action
.u
.ext_chan_switch
.data
;
3705 ieee80211_sta_process_chanswitch(sdata
,
3707 rx_status
->device_timestamp
,
3712 sdata_unlock(sdata
);
3715 static void ieee80211_sta_timer(struct timer_list
*t
)
3717 struct ieee80211_sub_if_data
*sdata
=
3718 from_timer(sdata
, t
, u
.mgd
.timer
);
3720 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
3723 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data
*sdata
,
3724 u8
*bssid
, u8 reason
, bool tx
)
3726 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3728 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
, reason
,
3731 ieee80211_report_disconnect(sdata
, frame_buf
, sizeof(frame_buf
), true,
3735 static int ieee80211_auth(struct ieee80211_sub_if_data
*sdata
)
3737 struct ieee80211_local
*local
= sdata
->local
;
3738 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3739 struct ieee80211_mgd_auth_data
*auth_data
= ifmgd
->auth_data
;
3744 sdata_assert_lock(sdata
);
3746 if (WARN_ON_ONCE(!auth_data
))
3751 if (auth_data
->tries
> IEEE80211_AUTH_MAX_TRIES
) {
3752 sdata_info(sdata
, "authentication with %pM timed out\n",
3753 auth_data
->bss
->bssid
);
3756 * Most likely AP is not in the range so remove the
3757 * bss struct for that AP.
3759 cfg80211_unlink_bss(local
->hw
.wiphy
, auth_data
->bss
);
3764 drv_mgd_prepare_tx(local
, sdata
);
3766 sdata_info(sdata
, "send auth to %pM (try %d/%d)\n",
3767 auth_data
->bss
->bssid
, auth_data
->tries
,
3768 IEEE80211_AUTH_MAX_TRIES
);
3770 auth_data
->expected_transaction
= 2;
3772 if (auth_data
->algorithm
== WLAN_AUTH_SAE
) {
3773 trans
= auth_data
->sae_trans
;
3774 status
= auth_data
->sae_status
;
3775 auth_data
->expected_transaction
= trans
;
3778 if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
3779 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
3780 IEEE80211_TX_INTFL_MLME_CONN_TX
;
3782 ieee80211_send_auth(sdata
, trans
, auth_data
->algorithm
, status
,
3783 auth_data
->data
, auth_data
->data_len
,
3784 auth_data
->bss
->bssid
,
3785 auth_data
->bss
->bssid
, NULL
, 0, 0,
3788 if (tx_flags
== 0) {
3789 if (auth_data
->algorithm
== WLAN_AUTH_SAE
)
3790 auth_data
->timeout
= jiffies
+
3791 IEEE80211_AUTH_TIMEOUT_SAE
;
3793 auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_TIMEOUT
;
3795 auth_data
->timeout
=
3796 round_jiffies_up(jiffies
+ IEEE80211_AUTH_TIMEOUT_LONG
);
3799 auth_data
->timeout_started
= true;
3800 run_again(sdata
, auth_data
->timeout
);
3805 static int ieee80211_do_assoc(struct ieee80211_sub_if_data
*sdata
)
3807 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
3808 struct ieee80211_local
*local
= sdata
->local
;
3810 sdata_assert_lock(sdata
);
3812 assoc_data
->tries
++;
3813 if (assoc_data
->tries
> IEEE80211_ASSOC_MAX_TRIES
) {
3814 sdata_info(sdata
, "association with %pM timed out\n",
3815 assoc_data
->bss
->bssid
);
3818 * Most likely AP is not in the range so remove the
3819 * bss struct for that AP.
3821 cfg80211_unlink_bss(local
->hw
.wiphy
, assoc_data
->bss
);
3826 sdata_info(sdata
, "associate with %pM (try %d/%d)\n",
3827 assoc_data
->bss
->bssid
, assoc_data
->tries
,
3828 IEEE80211_ASSOC_MAX_TRIES
);
3829 ieee80211_send_assoc(sdata
);
3831 if (!ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
)) {
3832 assoc_data
->timeout
= jiffies
+ IEEE80211_ASSOC_TIMEOUT
;
3833 assoc_data
->timeout_started
= true;
3834 run_again(sdata
, assoc_data
->timeout
);
3836 assoc_data
->timeout
=
3837 round_jiffies_up(jiffies
+
3838 IEEE80211_ASSOC_TIMEOUT_LONG
);
3839 assoc_data
->timeout_started
= true;
3840 run_again(sdata
, assoc_data
->timeout
);
3846 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data
*sdata
,
3847 __le16 fc
, bool acked
)
3849 struct ieee80211_local
*local
= sdata
->local
;
3851 sdata
->u
.mgd
.status_fc
= fc
;
3852 sdata
->u
.mgd
.status_acked
= acked
;
3853 sdata
->u
.mgd
.status_received
= true;
3855 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
3858 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
)
3860 struct ieee80211_local
*local
= sdata
->local
;
3861 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3865 if (ifmgd
->status_received
) {
3866 __le16 fc
= ifmgd
->status_fc
;
3867 bool status_acked
= ifmgd
->status_acked
;
3869 ifmgd
->status_received
= false;
3870 if (ifmgd
->auth_data
&& ieee80211_is_auth(fc
)) {
3872 if (ifmgd
->auth_data
->algorithm
==
3874 ifmgd
->auth_data
->timeout
=
3876 IEEE80211_AUTH_TIMEOUT_SAE
;
3878 ifmgd
->auth_data
->timeout
=
3880 IEEE80211_AUTH_TIMEOUT_SHORT
;
3881 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3883 ifmgd
->auth_data
->timeout
= jiffies
- 1;
3885 ifmgd
->auth_data
->timeout_started
= true;
3886 } else if (ifmgd
->assoc_data
&&
3887 (ieee80211_is_assoc_req(fc
) ||
3888 ieee80211_is_reassoc_req(fc
))) {
3890 ifmgd
->assoc_data
->timeout
=
3891 jiffies
+ IEEE80211_ASSOC_TIMEOUT_SHORT
;
3892 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3894 ifmgd
->assoc_data
->timeout
= jiffies
- 1;
3896 ifmgd
->assoc_data
->timeout_started
= true;
3900 if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
&&
3901 time_after(jiffies
, ifmgd
->auth_data
->timeout
)) {
3902 if (ifmgd
->auth_data
->done
) {
3904 * ok ... we waited for assoc but userspace didn't,
3905 * so let's just kill the auth data
3907 ieee80211_destroy_auth_data(sdata
, false);
3908 } else if (ieee80211_auth(sdata
)) {
3910 struct ieee80211_event event
= {
3912 .u
.mlme
.data
= AUTH_EVENT
,
3913 .u
.mlme
.status
= MLME_TIMEOUT
,
3916 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
3918 ieee80211_destroy_auth_data(sdata
, false);
3920 cfg80211_auth_timeout(sdata
->dev
, bssid
);
3921 drv_event_callback(sdata
->local
, sdata
, &event
);
3923 } else if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
)
3924 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3926 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
&&
3927 time_after(jiffies
, ifmgd
->assoc_data
->timeout
)) {
3928 if ((ifmgd
->assoc_data
->need_beacon
&& !ifmgd
->have_beacon
) ||
3929 ieee80211_do_assoc(sdata
)) {
3930 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
3931 struct ieee80211_event event
= {
3933 .u
.mlme
.data
= ASSOC_EVENT
,
3934 .u
.mlme
.status
= MLME_TIMEOUT
,
3937 ieee80211_destroy_assoc_data(sdata
, false, false);
3938 cfg80211_assoc_timeout(sdata
->dev
, bss
);
3939 drv_event_callback(sdata
->local
, sdata
, &event
);
3941 } else if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
)
3942 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3944 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
&&
3945 ifmgd
->associated
) {
3949 memcpy(bssid
, ifmgd
->associated
->bssid
, ETH_ALEN
);
3951 if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
))
3952 max_tries
= max_nullfunc_tries
;
3954 max_tries
= max_probe_tries
;
3956 /* ACK received for nullfunc probing frame */
3957 if (!ifmgd
->probe_send_count
)
3958 ieee80211_reset_ap_probe(sdata
);
3959 else if (ifmgd
->nullfunc_failed
) {
3960 if (ifmgd
->probe_send_count
< max_tries
) {
3962 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3963 bssid
, ifmgd
->probe_send_count
,
3965 ieee80211_mgd_probe_ap_send(sdata
);
3968 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3970 ieee80211_sta_connection_lost(sdata
, bssid
,
3971 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
3974 } else if (time_is_after_jiffies(ifmgd
->probe_timeout
))
3975 run_again(sdata
, ifmgd
->probe_timeout
);
3976 else if (ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
)) {
3978 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3979 bssid
, probe_wait_ms
);
3980 ieee80211_sta_connection_lost(sdata
, bssid
,
3981 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
3982 } else if (ifmgd
->probe_send_count
< max_tries
) {
3984 "No probe response from AP %pM after %dms, try %d/%i\n",
3985 bssid
, probe_wait_ms
,
3986 ifmgd
->probe_send_count
, max_tries
);
3987 ieee80211_mgd_probe_ap_send(sdata
);
3990 * We actually lost the connection ... or did we?
3994 "No probe response from AP %pM after %dms, disconnecting.\n",
3995 bssid
, probe_wait_ms
);
3997 ieee80211_sta_connection_lost(sdata
, bssid
,
3998 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
4002 sdata_unlock(sdata
);
4005 static void ieee80211_sta_bcn_mon_timer(struct timer_list
*t
)
4007 struct ieee80211_sub_if_data
*sdata
=
4008 from_timer(sdata
, t
, u
.mgd
.bcn_mon_timer
);
4009 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4011 if (sdata
->vif
.csa_active
&& !ifmgd
->csa_waiting_bcn
)
4014 sdata
->u
.mgd
.connection_loss
= false;
4015 ieee80211_queue_work(&sdata
->local
->hw
,
4016 &sdata
->u
.mgd
.beacon_connection_loss_work
);
4019 static void ieee80211_sta_conn_mon_timer(struct timer_list
*t
)
4021 struct ieee80211_sub_if_data
*sdata
=
4022 from_timer(sdata
, t
, u
.mgd
.conn_mon_timer
);
4023 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4024 struct ieee80211_local
*local
= sdata
->local
;
4026 if (sdata
->vif
.csa_active
&& !ifmgd
->csa_waiting_bcn
)
4029 ieee80211_queue_work(&local
->hw
, &ifmgd
->monitor_work
);
4032 static void ieee80211_sta_monitor_work(struct work_struct
*work
)
4034 struct ieee80211_sub_if_data
*sdata
=
4035 container_of(work
, struct ieee80211_sub_if_data
,
4036 u
.mgd
.monitor_work
);
4038 ieee80211_mgd_probe_ap(sdata
, false);
4041 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
4043 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
4044 __ieee80211_stop_poll(sdata
);
4046 /* let's probe the connection once */
4047 if (!ieee80211_hw_check(&sdata
->local
->hw
, CONNECTION_MONITOR
))
4048 ieee80211_queue_work(&sdata
->local
->hw
,
4049 &sdata
->u
.mgd
.monitor_work
);
4054 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data
*sdata
)
4056 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4057 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4061 if (ifmgd
->auth_data
|| ifmgd
->assoc_data
) {
4062 const u8
*bssid
= ifmgd
->auth_data
?
4063 ifmgd
->auth_data
->bss
->bssid
:
4064 ifmgd
->assoc_data
->bss
->bssid
;
4067 * If we are trying to authenticate / associate while suspending,
4068 * cfg80211 won't know and won't actually abort those attempts,
4069 * thus we need to do that ourselves.
4071 ieee80211_send_deauth_disassoc(sdata
, bssid
,
4072 IEEE80211_STYPE_DEAUTH
,
4073 WLAN_REASON_DEAUTH_LEAVING
,
4075 if (ifmgd
->assoc_data
)
4076 ieee80211_destroy_assoc_data(sdata
, false, true);
4077 if (ifmgd
->auth_data
)
4078 ieee80211_destroy_auth_data(sdata
, false);
4079 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4080 IEEE80211_DEAUTH_FRAME_LEN
);
4083 /* This is a bit of a hack - we should find a better and more generic
4084 * solution to this. Normally when suspending, cfg80211 will in fact
4085 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4086 * auth (not so important) or assoc (this is the problem) process.
4088 * As a consequence, it can happen that we are in the process of both
4089 * associating and suspending, and receive an association response
4090 * after cfg80211 has checked if it needs to disconnect, but before
4091 * we actually set the flag to drop incoming frames. This will then
4092 * cause the workqueue flush to process the association response in
4093 * the suspend, resulting in a successful association just before it
4094 * tries to remove the interface from the driver, which now though
4095 * has a channel context assigned ... this results in issues.
4097 * To work around this (for now) simply deauth here again if we're
4100 if (ifmgd
->associated
&& !sdata
->local
->wowlan
) {
4102 struct cfg80211_deauth_request req
= {
4103 .reason_code
= WLAN_REASON_DEAUTH_LEAVING
,
4107 memcpy(bssid
, ifmgd
->associated
->bssid
, ETH_ALEN
);
4108 ieee80211_mgd_deauth(sdata
, &req
);
4111 sdata_unlock(sdata
);
4114 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
)
4116 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4119 if (!ifmgd
->associated
) {
4120 sdata_unlock(sdata
);
4124 if (sdata
->flags
& IEEE80211_SDATA_DISCONNECT_RESUME
) {
4125 sdata
->flags
&= ~IEEE80211_SDATA_DISCONNECT_RESUME
;
4126 mlme_dbg(sdata
, "driver requested disconnect after resume\n");
4127 ieee80211_sta_connection_lost(sdata
,
4128 ifmgd
->associated
->bssid
,
4129 WLAN_REASON_UNSPECIFIED
,
4131 sdata_unlock(sdata
);
4134 sdata_unlock(sdata
);
4138 /* interface setup */
4139 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
)
4141 struct ieee80211_if_managed
*ifmgd
;
4143 ifmgd
= &sdata
->u
.mgd
;
4144 INIT_WORK(&ifmgd
->monitor_work
, ieee80211_sta_monitor_work
);
4145 INIT_WORK(&ifmgd
->chswitch_work
, ieee80211_chswitch_work
);
4146 INIT_WORK(&ifmgd
->beacon_connection_loss_work
,
4147 ieee80211_beacon_connection_loss_work
);
4148 INIT_WORK(&ifmgd
->csa_connection_drop_work
,
4149 ieee80211_csa_connection_drop_work
);
4150 INIT_WORK(&ifmgd
->request_smps_work
, ieee80211_request_smps_mgd_work
);
4151 INIT_DELAYED_WORK(&ifmgd
->tdls_peer_del_work
,
4152 ieee80211_tdls_peer_del_work
);
4153 timer_setup(&ifmgd
->timer
, ieee80211_sta_timer
, 0);
4154 timer_setup(&ifmgd
->bcn_mon_timer
, ieee80211_sta_bcn_mon_timer
, 0);
4155 timer_setup(&ifmgd
->conn_mon_timer
, ieee80211_sta_conn_mon_timer
, 0);
4156 timer_setup(&ifmgd
->chswitch_timer
, ieee80211_chswitch_timer
, 0);
4157 INIT_DELAYED_WORK(&ifmgd
->tx_tspec_wk
,
4158 ieee80211_sta_handle_tspec_ac_params_wk
);
4161 ifmgd
->powersave
= sdata
->wdev
.ps
;
4162 ifmgd
->uapsd_queues
= sdata
->local
->hw
.uapsd_queues
;
4163 ifmgd
->uapsd_max_sp_len
= sdata
->local
->hw
.uapsd_max_sp_len
;
4164 ifmgd
->p2p_noa_index
= -1;
4166 if (sdata
->local
->hw
.wiphy
->features
& NL80211_FEATURE_DYNAMIC_SMPS
)
4167 ifmgd
->req_smps
= IEEE80211_SMPS_AUTOMATIC
;
4169 ifmgd
->req_smps
= IEEE80211_SMPS_OFF
;
4171 /* Setup TDLS data */
4172 spin_lock_init(&ifmgd
->teardown_lock
);
4173 ifmgd
->teardown_skb
= NULL
;
4174 ifmgd
->orig_teardown_skb
= NULL
;
4177 /* scan finished notification */
4178 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
)
4180 struct ieee80211_sub_if_data
*sdata
;
4182 /* Restart STA timers */
4184 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4185 if (ieee80211_sdata_running(sdata
))
4186 ieee80211_restart_sta_timer(sdata
);
4191 static u8
ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data
*sdata
,
4192 struct cfg80211_bss
*cbss
)
4194 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4195 const u8
*ht_cap_ie
, *vht_cap_ie
;
4196 const struct ieee80211_ht_cap
*ht_cap
;
4197 const struct ieee80211_vht_cap
*vht_cap
;
4200 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)
4203 ht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
4204 if (ht_cap_ie
&& ht_cap_ie
[1] >= sizeof(*ht_cap
)) {
4205 ht_cap
= (void *)(ht_cap_ie
+ 2);
4206 chains
= ieee80211_mcs_to_chains(&ht_cap
->mcs
);
4208 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4209 * "Tx Unequal Modulation Supported" fields.
4213 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
4216 vht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
4217 if (vht_cap_ie
&& vht_cap_ie
[1] >= sizeof(*vht_cap
)) {
4221 vht_cap
= (void *)(vht_cap_ie
+ 2);
4222 tx_mcs_map
= le16_to_cpu(vht_cap
->supp_mcs
.tx_mcs_map
);
4223 for (nss
= 8; nss
> 0; nss
--) {
4224 if (((tx_mcs_map
>> (2 * (nss
- 1))) & 3) !=
4225 IEEE80211_VHT_MCS_NOT_SUPPORTED
)
4228 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4229 chains
= max(chains
, nss
);
4235 static int ieee80211_prep_channel(struct ieee80211_sub_if_data
*sdata
,
4236 struct cfg80211_bss
*cbss
)
4238 struct ieee80211_local
*local
= sdata
->local
;
4239 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4240 const struct ieee80211_ht_cap
*ht_cap
= NULL
;
4241 const struct ieee80211_ht_operation
*ht_oper
= NULL
;
4242 const struct ieee80211_vht_operation
*vht_oper
= NULL
;
4243 struct ieee80211_supported_band
*sband
;
4244 struct cfg80211_chan_def chandef
;
4249 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
4251 ifmgd
->flags
&= ~(IEEE80211_STA_DISABLE_40MHZ
|
4252 IEEE80211_STA_DISABLE_80P80MHZ
|
4253 IEEE80211_STA_DISABLE_160MHZ
);
4257 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
4258 sband
->ht_cap
.ht_supported
) {
4259 const u8
*ht_oper_ie
, *ht_cap_ie
;
4261 ht_oper_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_OPERATION
);
4262 if (ht_oper_ie
&& ht_oper_ie
[1] >= sizeof(*ht_oper
))
4263 ht_oper
= (void *)(ht_oper_ie
+ 2);
4265 ht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
4266 if (ht_cap_ie
&& ht_cap_ie
[1] >= sizeof(*ht_cap
))
4267 ht_cap
= (void *)(ht_cap_ie
+ 2);
4270 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4275 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
4276 sband
->vht_cap
.vht_supported
) {
4277 const u8
*vht_oper_ie
, *vht_cap
;
4279 vht_oper_ie
= ieee80211_bss_get_ie(cbss
,
4280 WLAN_EID_VHT_OPERATION
);
4281 if (vht_oper_ie
&& vht_oper_ie
[1] >= sizeof(*vht_oper
))
4282 vht_oper
= (void *)(vht_oper_ie
+ 2);
4283 if (vht_oper
&& !ht_oper
) {
4286 "AP advertised VHT without HT, disabling both\n");
4287 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4288 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4291 vht_cap
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
4292 if (!vht_cap
|| vht_cap
[1] < sizeof(struct ieee80211_vht_cap
)) {
4293 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4298 /* Allow VHT if at least one channel on the sband supports 80 MHz */
4300 for (i
= 0; i
< sband
->n_channels
; i
++) {
4301 if (sband
->channels
[i
].flags
& (IEEE80211_CHAN_DISABLED
|
4302 IEEE80211_CHAN_NO_80MHZ
))
4310 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4312 ifmgd
->flags
|= ieee80211_determine_chantype(sdata
, sband
,
4317 sdata
->needed_rx_chains
= min(ieee80211_ht_vht_rx_chains(sdata
, cbss
),
4322 /* will change later if needed */
4323 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
4325 mutex_lock(&local
->mtx
);
4327 * If this fails (possibly due to channel context sharing
4328 * on incompatible channels, e.g. 80+80 and 160 sharing the
4329 * same control channel) try to use a smaller bandwidth.
4331 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
4332 IEEE80211_CHANCTX_SHARED
);
4334 /* don't downgrade for 5 and 10 MHz channels, though. */
4335 if (chandef
.width
== NL80211_CHAN_WIDTH_5
||
4336 chandef
.width
== NL80211_CHAN_WIDTH_10
)
4339 while (ret
&& chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
) {
4340 ifmgd
->flags
|= ieee80211_chandef_downgrade(&chandef
);
4341 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
4342 IEEE80211_CHANCTX_SHARED
);
4345 mutex_unlock(&local
->mtx
);
4349 static int ieee80211_prep_connection(struct ieee80211_sub_if_data
*sdata
,
4350 struct cfg80211_bss
*cbss
, bool assoc
,
4353 struct ieee80211_local
*local
= sdata
->local
;
4354 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4355 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
4356 struct sta_info
*new_sta
= NULL
;
4357 struct ieee80211_supported_band
*sband
;
4358 bool have_sta
= false;
4361 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
4363 if (WARN_ON(!ifmgd
->auth_data
&& !ifmgd
->assoc_data
))
4366 /* If a reconfig is happening, bail out */
4367 if (local
->in_reconfig
)
4372 have_sta
= sta_info_get(sdata
, cbss
->bssid
);
4377 new_sta
= sta_info_alloc(sdata
, cbss
->bssid
, GFP_KERNEL
);
4383 * Set up the information for the new channel before setting the
4384 * new channel. We can't - completely race-free - change the basic
4385 * rates bitmap and the channel (sband) that it refers to, but if
4386 * we set it up before we at least avoid calling into the driver's
4387 * bss_info_changed() method with invalid information (since we do
4388 * call that from changing the channel - only for IDLE and perhaps
4389 * some others, but ...).
4391 * So to avoid that, just set up all the new information before the
4392 * channel, but tell the driver to apply it only afterwards, since
4393 * it might need the new channel for that.
4396 u32 rates
= 0, basic_rates
= 0;
4397 bool have_higher_than_11mbit
;
4398 int min_rate
= INT_MAX
, min_rate_index
= -1;
4399 const struct cfg80211_bss_ies
*ies
;
4400 int shift
= ieee80211_vif_get_shift(&sdata
->vif
);
4402 ieee80211_get_rates(sband
, bss
->supp_rates
,
4403 bss
->supp_rates_len
,
4404 &rates
, &basic_rates
,
4405 &have_higher_than_11mbit
,
4406 &min_rate
, &min_rate_index
,
4410 * This used to be a workaround for basic rates missing
4411 * in the association response frame. Now that we no
4412 * longer use the basic rates from there, it probably
4413 * doesn't happen any more, but keep the workaround so
4414 * in case some *other* APs are buggy in different ways
4415 * we can connect -- with a warning.
4417 if (!basic_rates
&& min_rate_index
>= 0) {
4419 "No basic rates, using min rate instead\n");
4420 basic_rates
= BIT(min_rate_index
);
4423 new_sta
->sta
.supp_rates
[cbss
->channel
->band
] = rates
;
4424 sdata
->vif
.bss_conf
.basic_rates
= basic_rates
;
4426 /* cf. IEEE 802.11 9.2.12 */
4427 if (cbss
->channel
->band
== NL80211_BAND_2GHZ
&&
4428 have_higher_than_11mbit
)
4429 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
4431 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
4433 memcpy(ifmgd
->bssid
, cbss
->bssid
, ETH_ALEN
);
4435 /* set timing information */
4436 sdata
->vif
.bss_conf
.beacon_int
= cbss
->beacon_interval
;
4438 ies
= rcu_dereference(cbss
->beacon_ies
);
4442 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
4443 sdata
->vif
.bss_conf
.sync_device_ts
=
4444 bss
->device_ts_beacon
;
4445 tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
4446 ies
->data
, ies
->len
);
4447 if (tim_ie
&& tim_ie
[1] >= 2)
4448 sdata
->vif
.bss_conf
.sync_dtim_count
= tim_ie
[2];
4450 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4451 } else if (!ieee80211_hw_check(&sdata
->local
->hw
,
4452 TIMING_BEACON_ONLY
)) {
4453 ies
= rcu_dereference(cbss
->proberesp_ies
);
4454 /* must be non-NULL since beacon IEs were NULL */
4455 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
4456 sdata
->vif
.bss_conf
.sync_device_ts
=
4457 bss
->device_ts_presp
;
4458 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4460 sdata
->vif
.bss_conf
.sync_tsf
= 0;
4461 sdata
->vif
.bss_conf
.sync_device_ts
= 0;
4462 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4467 if (new_sta
|| override
) {
4468 err
= ieee80211_prep_channel(sdata
, cbss
);
4471 sta_info_free(local
, new_sta
);
4478 * tell driver about BSSID, basic rates and timing
4479 * this was set up above, before setting the channel
4481 ieee80211_bss_info_change_notify(sdata
,
4482 BSS_CHANGED_BSSID
| BSS_CHANGED_BASIC_RATES
|
4483 BSS_CHANGED_BEACON_INT
);
4486 sta_info_pre_move_state(new_sta
, IEEE80211_STA_AUTH
);
4488 err
= sta_info_insert(new_sta
);
4492 "failed to insert STA entry for the AP (error %d)\n",
4497 WARN_ON_ONCE(!ether_addr_equal(ifmgd
->bssid
, cbss
->bssid
));
4499 /* Cancel scan to ensure that nothing interferes with connection */
4500 if (local
->scanning
)
4501 ieee80211_scan_cancel(local
);
4507 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
4508 struct cfg80211_auth_request
*req
)
4510 struct ieee80211_local
*local
= sdata
->local
;
4511 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4512 struct ieee80211_mgd_auth_data
*auth_data
;
4516 /* prepare auth data structure */
4518 switch (req
->auth_type
) {
4519 case NL80211_AUTHTYPE_OPEN_SYSTEM
:
4520 auth_alg
= WLAN_AUTH_OPEN
;
4522 case NL80211_AUTHTYPE_SHARED_KEY
:
4523 if (IS_ERR(local
->wep_tx_tfm
))
4525 auth_alg
= WLAN_AUTH_SHARED_KEY
;
4527 case NL80211_AUTHTYPE_FT
:
4528 auth_alg
= WLAN_AUTH_FT
;
4530 case NL80211_AUTHTYPE_NETWORK_EAP
:
4531 auth_alg
= WLAN_AUTH_LEAP
;
4533 case NL80211_AUTHTYPE_SAE
:
4534 auth_alg
= WLAN_AUTH_SAE
;
4536 case NL80211_AUTHTYPE_FILS_SK
:
4537 auth_alg
= WLAN_AUTH_FILS_SK
;
4539 case NL80211_AUTHTYPE_FILS_SK_PFS
:
4540 auth_alg
= WLAN_AUTH_FILS_SK_PFS
;
4542 case NL80211_AUTHTYPE_FILS_PK
:
4543 auth_alg
= WLAN_AUTH_FILS_PK
;
4549 auth_data
= kzalloc(sizeof(*auth_data
) + req
->auth_data_len
+
4550 req
->ie_len
, GFP_KERNEL
);
4554 auth_data
->bss
= req
->bss
;
4556 if (req
->auth_data_len
>= 4) {
4557 if (req
->auth_type
== NL80211_AUTHTYPE_SAE
) {
4558 __le16
*pos
= (__le16
*) req
->auth_data
;
4560 auth_data
->sae_trans
= le16_to_cpu(pos
[0]);
4561 auth_data
->sae_status
= le16_to_cpu(pos
[1]);
4563 memcpy(auth_data
->data
, req
->auth_data
+ 4,
4564 req
->auth_data_len
- 4);
4565 auth_data
->data_len
+= req
->auth_data_len
- 4;
4568 if (req
->ie
&& req
->ie_len
) {
4569 memcpy(&auth_data
->data
[auth_data
->data_len
],
4570 req
->ie
, req
->ie_len
);
4571 auth_data
->data_len
+= req
->ie_len
;
4574 if (req
->key
&& req
->key_len
) {
4575 auth_data
->key_len
= req
->key_len
;
4576 auth_data
->key_idx
= req
->key_idx
;
4577 memcpy(auth_data
->key
, req
->key
, req
->key_len
);
4580 auth_data
->algorithm
= auth_alg
;
4582 /* try to authenticate/probe */
4584 if ((ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) ||
4585 ifmgd
->assoc_data
) {
4590 if (ifmgd
->auth_data
)
4591 ieee80211_destroy_auth_data(sdata
, false);
4593 /* prep auth_data so we don't go into idle on disassoc */
4594 ifmgd
->auth_data
= auth_data
;
4596 if (ifmgd
->associated
) {
4597 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4600 "disconnect from AP %pM for new auth to %pM\n",
4601 ifmgd
->associated
->bssid
, req
->bss
->bssid
);
4602 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4603 WLAN_REASON_UNSPECIFIED
,
4606 ieee80211_report_disconnect(sdata
, frame_buf
,
4607 sizeof(frame_buf
), true,
4608 WLAN_REASON_UNSPECIFIED
);
4611 sdata_info(sdata
, "authenticate with %pM\n", req
->bss
->bssid
);
4613 err
= ieee80211_prep_connection(sdata
, req
->bss
, false, false);
4617 err
= ieee80211_auth(sdata
);
4619 sta_info_destroy_addr(sdata
, req
->bss
->bssid
);
4623 /* hold our own reference */
4624 cfg80211_ref_bss(local
->hw
.wiphy
, auth_data
->bss
);
4628 eth_zero_addr(ifmgd
->bssid
);
4629 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4630 ifmgd
->auth_data
= NULL
;
4631 mutex_lock(&sdata
->local
->mtx
);
4632 ieee80211_vif_release_channel(sdata
);
4633 mutex_unlock(&sdata
->local
->mtx
);
4639 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
4640 struct cfg80211_assoc_request
*req
)
4642 struct ieee80211_local
*local
= sdata
->local
;
4643 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4644 struct ieee80211_bss
*bss
= (void *)req
->bss
->priv
;
4645 struct ieee80211_mgd_assoc_data
*assoc_data
;
4646 const struct cfg80211_bss_ies
*beacon_ies
;
4647 struct ieee80211_supported_band
*sband
;
4648 const u8
*ssidie
, *ht_ie
, *vht_ie
;
4650 bool override
= false;
4652 assoc_data
= kzalloc(sizeof(*assoc_data
) + req
->ie_len
, GFP_KERNEL
);
4657 ssidie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_SSID
);
4663 memcpy(assoc_data
->ssid
, ssidie
+ 2, ssidie
[1]);
4664 assoc_data
->ssid_len
= ssidie
[1];
4667 if (ifmgd
->associated
) {
4668 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4671 "disconnect from AP %pM for new assoc to %pM\n",
4672 ifmgd
->associated
->bssid
, req
->bss
->bssid
);
4673 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4674 WLAN_REASON_UNSPECIFIED
,
4677 ieee80211_report_disconnect(sdata
, frame_buf
,
4678 sizeof(frame_buf
), true,
4679 WLAN_REASON_UNSPECIFIED
);
4682 if (ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) {
4687 if (ifmgd
->assoc_data
) {
4692 if (ifmgd
->auth_data
) {
4695 /* keep sta info, bssid if matching */
4696 match
= ether_addr_equal(ifmgd
->bssid
, req
->bss
->bssid
);
4697 ieee80211_destroy_auth_data(sdata
, match
);
4700 /* prepare assoc data */
4702 ifmgd
->beacon_crc_valid
= false;
4704 assoc_data
->wmm
= bss
->wmm_used
&&
4705 (local
->hw
.queues
>= IEEE80211_NUM_ACS
);
4708 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4709 * We still associate in non-HT mode (11a/b/g) if any one of these
4710 * ciphers is configured as pairwise.
4711 * We can set this to true for non-11n hardware, that'll be checked
4712 * separately along with the peer capabilities.
4714 for (i
= 0; i
< req
->crypto
.n_ciphers_pairwise
; i
++) {
4715 if (req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP40
||
4716 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_TKIP
||
4717 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP104
) {
4718 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4719 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4720 netdev_info(sdata
->dev
,
4721 "disabling HT/VHT due to WEP/TKIP use\n");
4725 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4726 sband
= local
->hw
.wiphy
->bands
[req
->bss
->channel
->band
];
4727 if (!sband
->ht_cap
.ht_supported
||
4728 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
||
4729 ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) {
4730 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4731 if (!bss
->wmm_used
&&
4732 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
))
4733 netdev_info(sdata
->dev
,
4734 "disabling HT as WMM/QoS is not supported by the AP\n");
4737 /* disable VHT if we don't support it or the AP doesn't use WMM */
4738 if (!sband
->vht_cap
.vht_supported
||
4739 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
||
4740 ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) {
4741 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4742 if (!bss
->wmm_used
&&
4743 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
))
4744 netdev_info(sdata
->dev
,
4745 "disabling VHT as WMM/QoS is not supported by the AP\n");
4748 memcpy(&ifmgd
->ht_capa
, &req
->ht_capa
, sizeof(ifmgd
->ht_capa
));
4749 memcpy(&ifmgd
->ht_capa_mask
, &req
->ht_capa_mask
,
4750 sizeof(ifmgd
->ht_capa_mask
));
4752 memcpy(&ifmgd
->vht_capa
, &req
->vht_capa
, sizeof(ifmgd
->vht_capa
));
4753 memcpy(&ifmgd
->vht_capa_mask
, &req
->vht_capa_mask
,
4754 sizeof(ifmgd
->vht_capa_mask
));
4756 if (req
->ie
&& req
->ie_len
) {
4757 memcpy(assoc_data
->ie
, req
->ie
, req
->ie_len
);
4758 assoc_data
->ie_len
= req
->ie_len
;
4761 if (req
->fils_kek
) {
4762 /* should already be checked in cfg80211 - so warn */
4763 if (WARN_ON(req
->fils_kek_len
> FILS_MAX_KEK_LEN
)) {
4767 memcpy(assoc_data
->fils_kek
, req
->fils_kek
,
4769 assoc_data
->fils_kek_len
= req
->fils_kek_len
;
4772 if (req
->fils_nonces
)
4773 memcpy(assoc_data
->fils_nonces
, req
->fils_nonces
,
4774 2 * FILS_NONCE_LEN
);
4776 assoc_data
->bss
= req
->bss
;
4778 if (ifmgd
->req_smps
== IEEE80211_SMPS_AUTOMATIC
) {
4779 if (ifmgd
->powersave
)
4780 sdata
->smps_mode
= IEEE80211_SMPS_DYNAMIC
;
4782 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
4784 sdata
->smps_mode
= ifmgd
->req_smps
;
4786 assoc_data
->capability
= req
->bss
->capability
;
4787 assoc_data
->supp_rates
= bss
->supp_rates
;
4788 assoc_data
->supp_rates_len
= bss
->supp_rates_len
;
4791 ht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_HT_OPERATION
);
4792 if (ht_ie
&& ht_ie
[1] >= sizeof(struct ieee80211_ht_operation
))
4793 assoc_data
->ap_ht_param
=
4794 ((struct ieee80211_ht_operation
*)(ht_ie
+ 2))->ht_param
;
4796 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4797 vht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_VHT_CAPABILITY
);
4798 if (vht_ie
&& vht_ie
[1] >= sizeof(struct ieee80211_vht_cap
))
4799 memcpy(&assoc_data
->ap_vht_cap
, vht_ie
+ 2,
4800 sizeof(struct ieee80211_vht_cap
));
4802 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4805 if (WARN((sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_UAPSD
) &&
4806 ieee80211_hw_check(&local
->hw
, PS_NULLFUNC_STACK
),
4807 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4808 sdata
->vif
.driver_flags
&= ~IEEE80211_VIF_SUPPORTS_UAPSD
;
4810 if (bss
->wmm_used
&& bss
->uapsd_supported
&&
4811 (sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_UAPSD
)) {
4812 assoc_data
->uapsd
= true;
4813 ifmgd
->flags
|= IEEE80211_STA_UAPSD_ENABLED
;
4815 assoc_data
->uapsd
= false;
4816 ifmgd
->flags
&= ~IEEE80211_STA_UAPSD_ENABLED
;
4819 if (req
->prev_bssid
)
4820 memcpy(assoc_data
->prev_bssid
, req
->prev_bssid
, ETH_ALEN
);
4823 ifmgd
->mfp
= IEEE80211_MFP_REQUIRED
;
4824 ifmgd
->flags
|= IEEE80211_STA_MFP_ENABLED
;
4826 ifmgd
->mfp
= IEEE80211_MFP_DISABLED
;
4827 ifmgd
->flags
&= ~IEEE80211_STA_MFP_ENABLED
;
4830 if (req
->flags
& ASSOC_REQ_USE_RRM
)
4831 ifmgd
->flags
|= IEEE80211_STA_ENABLE_RRM
;
4833 ifmgd
->flags
&= ~IEEE80211_STA_ENABLE_RRM
;
4835 if (req
->crypto
.control_port
)
4836 ifmgd
->flags
|= IEEE80211_STA_CONTROL_PORT
;
4838 ifmgd
->flags
&= ~IEEE80211_STA_CONTROL_PORT
;
4840 sdata
->control_port_protocol
= req
->crypto
.control_port_ethertype
;
4841 sdata
->control_port_no_encrypt
= req
->crypto
.control_port_no_encrypt
;
4842 sdata
->encrypt_headroom
= ieee80211_cs_headroom(local
, &req
->crypto
,
4845 /* kick off associate process */
4847 ifmgd
->assoc_data
= assoc_data
;
4848 ifmgd
->dtim_period
= 0;
4849 ifmgd
->have_beacon
= false;
4851 /* override HT/VHT configuration only if the AP and we support it */
4852 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
4853 struct ieee80211_sta_ht_cap sta_ht_cap
;
4855 if (req
->flags
& ASSOC_REQ_DISABLE_HT
)
4858 memcpy(&sta_ht_cap
, &sband
->ht_cap
, sizeof(sta_ht_cap
));
4859 ieee80211_apply_htcap_overrides(sdata
, &sta_ht_cap
);
4861 /* check for 40 MHz disable override */
4862 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_40MHZ
) &&
4863 sband
->ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
&&
4864 !(sta_ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
))
4867 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
4868 req
->flags
& ASSOC_REQ_DISABLE_VHT
)
4872 if (req
->flags
& ASSOC_REQ_DISABLE_HT
) {
4873 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4874 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4877 if (req
->flags
& ASSOC_REQ_DISABLE_VHT
)
4878 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4880 err
= ieee80211_prep_connection(sdata
, req
->bss
, true, override
);
4885 beacon_ies
= rcu_dereference(req
->bss
->beacon_ies
);
4887 if (ieee80211_hw_check(&sdata
->local
->hw
, NEED_DTIM_BEFORE_ASSOC
) &&
4890 * Wait up to one beacon interval ...
4891 * should this be more if we miss one?
4893 sdata_info(sdata
, "waiting for beacon from %pM\n",
4895 assoc_data
->timeout
= TU_TO_EXP_TIME(req
->bss
->beacon_interval
);
4896 assoc_data
->timeout_started
= true;
4897 assoc_data
->need_beacon
= true;
4898 } else if (beacon_ies
) {
4899 const u8
*tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
4904 if (tim_ie
&& tim_ie
[1] >= sizeof(struct ieee80211_tim_ie
)) {
4905 const struct ieee80211_tim_ie
*tim
;
4906 tim
= (void *)(tim_ie
+ 2);
4907 ifmgd
->dtim_period
= tim
->dtim_period
;
4908 dtim_count
= tim
->dtim_count
;
4910 ifmgd
->have_beacon
= true;
4911 assoc_data
->timeout
= jiffies
;
4912 assoc_data
->timeout_started
= true;
4914 if (ieee80211_hw_check(&local
->hw
, TIMING_BEACON_ONLY
)) {
4915 sdata
->vif
.bss_conf
.sync_tsf
= beacon_ies
->tsf
;
4916 sdata
->vif
.bss_conf
.sync_device_ts
=
4917 bss
->device_ts_beacon
;
4918 sdata
->vif
.bss_conf
.sync_dtim_count
= dtim_count
;
4921 assoc_data
->timeout
= jiffies
;
4922 assoc_data
->timeout_started
= true;
4926 run_again(sdata
, assoc_data
->timeout
);
4928 if (bss
->corrupt_data
) {
4929 char *corrupt_type
= "data";
4930 if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_BEACON
) {
4931 if (bss
->corrupt_data
&
4932 IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4933 corrupt_type
= "beacon and probe response";
4935 corrupt_type
= "beacon";
4936 } else if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4937 corrupt_type
= "probe response";
4938 sdata_info(sdata
, "associating with AP with corrupt %s\n",
4944 eth_zero_addr(ifmgd
->bssid
);
4945 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4946 ifmgd
->assoc_data
= NULL
;
4952 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
4953 struct cfg80211_deauth_request
*req
)
4955 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4956 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4957 bool tx
= !req
->local_state_change
;
4959 if (ifmgd
->auth_data
&&
4960 ether_addr_equal(ifmgd
->auth_data
->bss
->bssid
, req
->bssid
)) {
4962 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4963 req
->bssid
, req
->reason_code
,
4964 ieee80211_get_reason_code_string(req
->reason_code
));
4966 drv_mgd_prepare_tx(sdata
->local
, sdata
);
4967 ieee80211_send_deauth_disassoc(sdata
, req
->bssid
,
4968 IEEE80211_STYPE_DEAUTH
,
4969 req
->reason_code
, tx
,
4971 ieee80211_destroy_auth_data(sdata
, false);
4972 ieee80211_report_disconnect(sdata
, frame_buf
,
4973 sizeof(frame_buf
), true,
4979 if (ifmgd
->assoc_data
&&
4980 ether_addr_equal(ifmgd
->assoc_data
->bss
->bssid
, req
->bssid
)) {
4982 "aborting association with %pM by local choice (Reason: %u=%s)\n",
4983 req
->bssid
, req
->reason_code
,
4984 ieee80211_get_reason_code_string(req
->reason_code
));
4986 drv_mgd_prepare_tx(sdata
->local
, sdata
);
4987 ieee80211_send_deauth_disassoc(sdata
, req
->bssid
,
4988 IEEE80211_STYPE_DEAUTH
,
4989 req
->reason_code
, tx
,
4991 ieee80211_destroy_assoc_data(sdata
, false, true);
4992 ieee80211_report_disconnect(sdata
, frame_buf
,
4993 sizeof(frame_buf
), true,
4998 if (ifmgd
->associated
&&
4999 ether_addr_equal(ifmgd
->associated
->bssid
, req
->bssid
)) {
5001 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5002 req
->bssid
, req
->reason_code
,
5003 ieee80211_get_reason_code_string(req
->reason_code
));
5005 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
5006 req
->reason_code
, tx
, frame_buf
);
5007 ieee80211_report_disconnect(sdata
, frame_buf
,
5008 sizeof(frame_buf
), true,
5016 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
5017 struct cfg80211_disassoc_request
*req
)
5019 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
5021 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
5024 * cfg80211 should catch this ... but it's racy since
5025 * we can receive a disassoc frame, process it, hand it
5026 * to cfg80211 while that's in a locked section already
5027 * trying to tell us that the user wants to disconnect.
5029 if (ifmgd
->associated
!= req
->bss
)
5033 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5034 req
->bss
->bssid
, req
->reason_code
, ieee80211_get_reason_code_string(req
->reason_code
));
5036 memcpy(bssid
, req
->bss
->bssid
, ETH_ALEN
);
5037 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DISASSOC
,
5038 req
->reason_code
, !req
->local_state_change
,
5041 ieee80211_report_disconnect(sdata
, frame_buf
, sizeof(frame_buf
), true,
5047 void ieee80211_mgd_stop(struct ieee80211_sub_if_data
*sdata
)
5049 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
5052 * Make sure some work items will not run after this,
5053 * they will not do anything but might not have been
5054 * cancelled when disconnecting.
5056 cancel_work_sync(&ifmgd
->monitor_work
);
5057 cancel_work_sync(&ifmgd
->beacon_connection_loss_work
);
5058 cancel_work_sync(&ifmgd
->request_smps_work
);
5059 cancel_work_sync(&ifmgd
->csa_connection_drop_work
);
5060 cancel_work_sync(&ifmgd
->chswitch_work
);
5061 cancel_delayed_work_sync(&ifmgd
->tdls_peer_del_work
);
5064 if (ifmgd
->assoc_data
) {
5065 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
5066 ieee80211_destroy_assoc_data(sdata
, false, false);
5067 cfg80211_assoc_timeout(sdata
->dev
, bss
);
5069 if (ifmgd
->auth_data
)
5070 ieee80211_destroy_auth_data(sdata
, false);
5071 spin_lock_bh(&ifmgd
->teardown_lock
);
5072 if (ifmgd
->teardown_skb
) {
5073 kfree_skb(ifmgd
->teardown_skb
);
5074 ifmgd
->teardown_skb
= NULL
;
5075 ifmgd
->orig_teardown_skb
= NULL
;
5077 spin_unlock_bh(&ifmgd
->teardown_lock
);
5078 del_timer_sync(&ifmgd
->timer
);
5079 sdata_unlock(sdata
);
5082 void ieee80211_cqm_rssi_notify(struct ieee80211_vif
*vif
,
5083 enum nl80211_cqm_rssi_threshold_event rssi_event
,
5087 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
5089 trace_api_cqm_rssi_notify(sdata
, rssi_event
, rssi_level
);
5091 cfg80211_cqm_rssi_notify(sdata
->dev
, rssi_event
, rssi_level
, gfp
);
5093 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify
);
5095 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif
*vif
, gfp_t gfp
)
5097 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
5099 trace_api_cqm_beacon_loss_notify(sdata
->local
, sdata
);
5101 cfg80211_cqm_beacon_loss_notify(sdata
->dev
, gfp
);
5103 EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify
);