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>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/delay.h>
15 #include <linux/if_ether.h>
16 #include <linux/skbuff.h>
17 #include <linux/if_arp.h>
18 #include <linux/etherdevice.h>
19 #include <linux/moduleparam.h>
20 #include <linux/rtnetlink.h>
21 #include <linux/pm_qos.h>
22 #include <linux/crc32.h>
23 #include <linux/slab.h>
24 #include <linux/export.h>
25 #include <net/mac80211.h>
26 #include <asm/unaligned.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
33 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
34 #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
35 #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
36 #define IEEE80211_AUTH_MAX_TRIES 3
37 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
38 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
39 #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
40 #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
41 #define IEEE80211_ASSOC_MAX_TRIES 3
43 static int max_nullfunc_tries
= 2;
44 module_param(max_nullfunc_tries
, int, 0644);
45 MODULE_PARM_DESC(max_nullfunc_tries
,
46 "Maximum nullfunc tx tries before disconnecting (reason 4).");
48 static int max_probe_tries
= 5;
49 module_param(max_probe_tries
, int, 0644);
50 MODULE_PARM_DESC(max_probe_tries
,
51 "Maximum probe tries before disconnecting (reason 4).");
54 * Beacon loss timeout is calculated as N frames times the
55 * advertised beacon interval. This may need to be somewhat
56 * higher than what hardware might detect to account for
57 * delays in the host processing frames. But since we also
58 * probe on beacon miss before declaring the connection lost
59 * default to what we want.
61 static int beacon_loss_count
= 7;
62 module_param(beacon_loss_count
, int, 0644);
63 MODULE_PARM_DESC(beacon_loss_count
,
64 "Number of beacon intervals before we decide beacon was lost.");
67 * Time the connection can be idle before we probe
68 * it to see if we can still talk to the AP.
70 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
72 * Time we wait for a probe response after sending
73 * a probe request because of beacon loss or for
74 * checking the connection still works.
76 static int probe_wait_ms
= 500;
77 module_param(probe_wait_ms
, int, 0644);
78 MODULE_PARM_DESC(probe_wait_ms
,
79 "Maximum time(ms) to wait for probe response"
80 " before disconnecting (reason 4).");
83 * Weight given to the latest Beacon frame when calculating average signal
84 * strength for Beacon frames received in the current BSS. This must be
87 #define IEEE80211_SIGNAL_AVE_WEIGHT 3
90 * How many Beacon frames need to have been used in average signal strength
91 * before starting to indicate signal change events.
93 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
96 * We can have multiple work items (and connection probing)
97 * scheduling this timer, but we need to take care to only
98 * reschedule it when it should fire _earlier_ than it was
99 * asked for before, or if it's not pending right now. This
100 * function ensures that. Note that it then is required to
101 * run this function for all timeouts after the first one
102 * has happened -- the work that runs from this timer will
105 static void run_again(struct ieee80211_sub_if_data
*sdata
,
106 unsigned long timeout
)
108 sdata_assert_lock(sdata
);
110 if (!timer_pending(&sdata
->u
.mgd
.timer
) ||
111 time_before(timeout
, sdata
->u
.mgd
.timer
.expires
))
112 mod_timer(&sdata
->u
.mgd
.timer
, timeout
);
115 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data
*sdata
)
117 if (sdata
->vif
.driver_flags
& IEEE80211_VIF_BEACON_FILTER
)
120 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
123 mod_timer(&sdata
->u
.mgd
.bcn_mon_timer
,
124 round_jiffies_up(jiffies
+ sdata
->u
.mgd
.beacon_timeout
));
127 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data
*sdata
)
129 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
131 if (unlikely(!sdata
->u
.mgd
.associated
))
134 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
137 mod_timer(&sdata
->u
.mgd
.conn_mon_timer
,
138 round_jiffies_up(jiffies
+ IEEE80211_CONNECTION_IDLE_TIME
));
140 ifmgd
->probe_send_count
= 0;
143 static int ecw2cw(int ecw
)
145 return (1 << ecw
) - 1;
148 static u32
chandef_downgrade(struct cfg80211_chan_def
*c
)
154 case NL80211_CHAN_WIDTH_20
:
155 c
->width
= NL80211_CHAN_WIDTH_20_NOHT
;
156 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
158 case NL80211_CHAN_WIDTH_40
:
159 c
->width
= NL80211_CHAN_WIDTH_20
;
160 c
->center_freq1
= c
->chan
->center_freq
;
161 ret
= IEEE80211_STA_DISABLE_40MHZ
|
162 IEEE80211_STA_DISABLE_VHT
;
164 case NL80211_CHAN_WIDTH_80
:
165 tmp
= (30 + c
->chan
->center_freq
- c
->center_freq1
)/20;
169 c
->center_freq1
= c
->center_freq1
- 20 + 40 * tmp
;
170 c
->width
= NL80211_CHAN_WIDTH_40
;
171 ret
= IEEE80211_STA_DISABLE_VHT
;
173 case NL80211_CHAN_WIDTH_80P80
:
175 c
->width
= NL80211_CHAN_WIDTH_80
;
176 ret
= IEEE80211_STA_DISABLE_80P80MHZ
|
177 IEEE80211_STA_DISABLE_160MHZ
;
179 case NL80211_CHAN_WIDTH_160
:
181 tmp
= (70 + c
->chan
->center_freq
- c
->center_freq1
)/20;
184 c
->center_freq1
= c
->center_freq1
- 40 + 80 * tmp
;
185 c
->width
= NL80211_CHAN_WIDTH_80
;
186 ret
= IEEE80211_STA_DISABLE_80P80MHZ
|
187 IEEE80211_STA_DISABLE_160MHZ
;
190 case NL80211_CHAN_WIDTH_20_NOHT
:
192 c
->width
= NL80211_CHAN_WIDTH_20_NOHT
;
193 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
195 case NL80211_CHAN_WIDTH_5
:
196 case NL80211_CHAN_WIDTH_10
:
199 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
203 WARN_ON_ONCE(!cfg80211_chandef_valid(c
));
209 ieee80211_determine_chantype(struct ieee80211_sub_if_data
*sdata
,
210 struct ieee80211_supported_band
*sband
,
211 struct ieee80211_channel
*channel
,
212 const struct ieee80211_ht_operation
*ht_oper
,
213 const struct ieee80211_vht_operation
*vht_oper
,
214 struct cfg80211_chan_def
*chandef
, bool tracking
)
216 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
217 struct cfg80211_chan_def vht_chandef
;
220 chandef
->chan
= channel
;
221 chandef
->width
= NL80211_CHAN_WIDTH_20_NOHT
;
222 chandef
->center_freq1
= channel
->center_freq
;
223 chandef
->center_freq2
= 0;
225 if (!ht_oper
|| !sband
->ht_cap
.ht_supported
) {
226 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
230 chandef
->width
= NL80211_CHAN_WIDTH_20
;
232 ht_cfreq
= ieee80211_channel_to_frequency(ht_oper
->primary_chan
,
234 /* check that channel matches the right operating channel */
235 if (!tracking
&& channel
->center_freq
!= ht_cfreq
) {
237 * It's possible that some APs are confused here;
238 * Netgear WNDR3700 sometimes reports 4 higher than
239 * the actual channel in association responses, but
240 * since we look at probe response/beacon data here
244 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
245 channel
->center_freq
, ht_cfreq
,
246 ht_oper
->primary_chan
, channel
->band
);
247 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
251 /* check 40 MHz support, if we have it */
252 if (sband
->ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
) {
253 switch (ht_oper
->ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
254 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
255 chandef
->width
= NL80211_CHAN_WIDTH_40
;
256 chandef
->center_freq1
+= 10;
258 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
259 chandef
->width
= NL80211_CHAN_WIDTH_40
;
260 chandef
->center_freq1
-= 10;
264 /* 40 MHz (and 80 MHz) must be supported for VHT */
265 ret
= IEEE80211_STA_DISABLE_VHT
;
266 /* also mark 40 MHz disabled */
267 ret
|= IEEE80211_STA_DISABLE_40MHZ
;
271 if (!vht_oper
|| !sband
->vht_cap
.vht_supported
) {
272 ret
= IEEE80211_STA_DISABLE_VHT
;
276 vht_chandef
.chan
= channel
;
277 vht_chandef
.center_freq1
=
278 ieee80211_channel_to_frequency(vht_oper
->center_freq_seg1_idx
,
280 vht_chandef
.center_freq2
= 0;
282 switch (vht_oper
->chan_width
) {
283 case IEEE80211_VHT_CHANWIDTH_USE_HT
:
284 vht_chandef
.width
= chandef
->width
;
286 case IEEE80211_VHT_CHANWIDTH_80MHZ
:
287 vht_chandef
.width
= NL80211_CHAN_WIDTH_80
;
289 case IEEE80211_VHT_CHANWIDTH_160MHZ
:
290 vht_chandef
.width
= NL80211_CHAN_WIDTH_160
;
292 case IEEE80211_VHT_CHANWIDTH_80P80MHZ
:
293 vht_chandef
.width
= NL80211_CHAN_WIDTH_80P80
;
294 vht_chandef
.center_freq2
=
295 ieee80211_channel_to_frequency(
296 vht_oper
->center_freq_seg2_idx
,
300 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
302 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
303 vht_oper
->chan_width
);
304 ret
= IEEE80211_STA_DISABLE_VHT
;
308 if (!cfg80211_chandef_valid(&vht_chandef
)) {
309 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
311 "AP VHT information is invalid, disable VHT\n");
312 ret
= IEEE80211_STA_DISABLE_VHT
;
316 if (cfg80211_chandef_identical(chandef
, &vht_chandef
)) {
321 if (!cfg80211_chandef_compatible(chandef
, &vht_chandef
)) {
322 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
324 "AP VHT information doesn't match HT, disable VHT\n");
325 ret
= IEEE80211_STA_DISABLE_VHT
;
329 *chandef
= vht_chandef
;
334 /* don't print the message below for VHT mismatch if VHT is disabled */
335 if (ret
& IEEE80211_STA_DISABLE_VHT
)
336 vht_chandef
= *chandef
;
339 * Ignore the DISABLED flag when we're already connected and only
340 * tracking the APs beacon for bandwidth changes - otherwise we
341 * might get disconnected here if we connect to an AP, update our
342 * regulatory information based on the AP's country IE and the
343 * information we have is wrong/outdated and disables the channel
344 * that we're actually using for the connection to the AP.
346 while (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, chandef
,
348 IEEE80211_CHAN_DISABLED
)) {
349 if (WARN_ON(chandef
->width
== NL80211_CHAN_WIDTH_20_NOHT
)) {
350 ret
= IEEE80211_STA_DISABLE_HT
|
351 IEEE80211_STA_DISABLE_VHT
;
355 ret
|= chandef_downgrade(chandef
);
358 if (chandef
->width
!= vht_chandef
.width
&& !tracking
)
360 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
362 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef
));
366 static int ieee80211_config_bw(struct ieee80211_sub_if_data
*sdata
,
367 struct sta_info
*sta
,
368 const struct ieee80211_ht_operation
*ht_oper
,
369 const struct ieee80211_vht_operation
*vht_oper
,
370 const u8
*bssid
, u32
*changed
)
372 struct ieee80211_local
*local
= sdata
->local
;
373 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
374 struct ieee80211_supported_band
*sband
;
375 struct ieee80211_channel
*chan
;
376 struct cfg80211_chan_def chandef
;
379 enum ieee80211_sta_rx_bandwidth new_sta_bw
;
382 /* if HT was/is disabled, don't track any bandwidth changes */
383 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
|| !ht_oper
)
386 /* don't check VHT if we associated as non-VHT station */
387 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
390 if (WARN_ON_ONCE(!sta
))
393 chan
= sdata
->vif
.bss_conf
.chandef
.chan
;
394 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
396 /* calculate new channel (type) based on HT/VHT operation IEs */
397 flags
= ieee80211_determine_chantype(sdata
, sband
, chan
, ht_oper
,
398 vht_oper
, &chandef
, true);
401 * Downgrade the new channel if we associated with restricted
402 * capabilities. For example, if we associated as a 20 MHz STA
403 * to a 40 MHz AP (due to regulatory, capabilities or config
404 * reasons) then switching to a 40 MHz channel now won't do us
405 * any good -- we couldn't use it with the AP.
407 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_80P80MHZ
&&
408 chandef
.width
== NL80211_CHAN_WIDTH_80P80
)
409 flags
|= chandef_downgrade(&chandef
);
410 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_160MHZ
&&
411 chandef
.width
== NL80211_CHAN_WIDTH_160
)
412 flags
|= chandef_downgrade(&chandef
);
413 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_40MHZ
&&
414 chandef
.width
> NL80211_CHAN_WIDTH_20
)
415 flags
|= chandef_downgrade(&chandef
);
417 if (cfg80211_chandef_identical(&chandef
, &sdata
->vif
.bss_conf
.chandef
))
421 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
422 ifmgd
->bssid
, chandef
.chan
->center_freq
, chandef
.width
,
423 chandef
.center_freq1
, chandef
.center_freq2
);
425 if (flags
!= (ifmgd
->flags
& (IEEE80211_STA_DISABLE_HT
|
426 IEEE80211_STA_DISABLE_VHT
|
427 IEEE80211_STA_DISABLE_40MHZ
|
428 IEEE80211_STA_DISABLE_80P80MHZ
|
429 IEEE80211_STA_DISABLE_160MHZ
)) ||
430 !cfg80211_chandef_valid(&chandef
)) {
432 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
437 switch (chandef
.width
) {
438 case NL80211_CHAN_WIDTH_20_NOHT
:
439 case NL80211_CHAN_WIDTH_20
:
440 new_sta_bw
= IEEE80211_STA_RX_BW_20
;
442 case NL80211_CHAN_WIDTH_40
:
443 new_sta_bw
= IEEE80211_STA_RX_BW_40
;
445 case NL80211_CHAN_WIDTH_80
:
446 new_sta_bw
= IEEE80211_STA_RX_BW_80
;
448 case NL80211_CHAN_WIDTH_80P80
:
449 case NL80211_CHAN_WIDTH_160
:
450 new_sta_bw
= IEEE80211_STA_RX_BW_160
;
456 if (new_sta_bw
> sta
->cur_max_bandwidth
)
457 new_sta_bw
= sta
->cur_max_bandwidth
;
459 if (new_sta_bw
< sta
->sta
.bandwidth
) {
460 sta
->sta
.bandwidth
= new_sta_bw
;
461 rate_control_rate_update(local
, sband
, sta
,
462 IEEE80211_RC_BW_CHANGED
);
465 ret
= ieee80211_vif_change_bandwidth(sdata
, &chandef
, changed
);
468 "AP %pM changed bandwidth to incompatible one - disconnect\n",
473 if (new_sta_bw
> sta
->sta
.bandwidth
) {
474 sta
->sta
.bandwidth
= new_sta_bw
;
475 rate_control_rate_update(local
, sband
, sta
,
476 IEEE80211_RC_BW_CHANGED
);
479 ht_opmode
= le16_to_cpu(ht_oper
->operation_mode
);
481 /* if bss configuration changed store the new one */
482 if (sdata
->vif
.bss_conf
.ht_operation_mode
!= ht_opmode
) {
483 *changed
|= BSS_CHANGED_HT
;
484 sdata
->vif
.bss_conf
.ht_operation_mode
= ht_opmode
;
490 /* frame sending functions */
492 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data
*sdata
,
493 struct sk_buff
*skb
, u8 ap_ht_param
,
494 struct ieee80211_supported_band
*sband
,
495 struct ieee80211_channel
*channel
,
496 enum ieee80211_smps_mode smps
)
499 u32 flags
= channel
->flags
;
501 struct ieee80211_sta_ht_cap ht_cap
;
503 BUILD_BUG_ON(sizeof(ht_cap
) != sizeof(sband
->ht_cap
));
505 memcpy(&ht_cap
, &sband
->ht_cap
, sizeof(ht_cap
));
506 ieee80211_apply_htcap_overrides(sdata
, &ht_cap
);
508 /* determine capability flags */
511 switch (ap_ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
512 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
513 if (flags
& IEEE80211_CHAN_NO_HT40PLUS
) {
514 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
515 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
518 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
519 if (flags
& IEEE80211_CHAN_NO_HT40MINUS
) {
520 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
521 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
527 * If 40 MHz was disabled associate as though we weren't
528 * capable of 40 MHz -- some broken APs will never fall
529 * back to trying to transmit in 20 MHz.
531 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_40MHZ
) {
532 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
533 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
536 /* set SM PS mode properly */
537 cap
&= ~IEEE80211_HT_CAP_SM_PS
;
539 case IEEE80211_SMPS_AUTOMATIC
:
540 case IEEE80211_SMPS_NUM_MODES
:
542 case IEEE80211_SMPS_OFF
:
543 cap
|= WLAN_HT_CAP_SM_PS_DISABLED
<<
544 IEEE80211_HT_CAP_SM_PS_SHIFT
;
546 case IEEE80211_SMPS_STATIC
:
547 cap
|= WLAN_HT_CAP_SM_PS_STATIC
<<
548 IEEE80211_HT_CAP_SM_PS_SHIFT
;
550 case IEEE80211_SMPS_DYNAMIC
:
551 cap
|= WLAN_HT_CAP_SM_PS_DYNAMIC
<<
552 IEEE80211_HT_CAP_SM_PS_SHIFT
;
556 /* reserve and fill IE */
557 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
) + 2);
558 ieee80211_ie_build_ht_cap(pos
, &ht_cap
, cap
);
561 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data
*sdata
,
563 struct ieee80211_supported_band
*sband
,
564 struct ieee80211_vht_cap
*ap_vht_cap
)
568 struct ieee80211_sta_vht_cap vht_cap
;
570 BUILD_BUG_ON(sizeof(vht_cap
) != sizeof(sband
->vht_cap
));
572 memcpy(&vht_cap
, &sband
->vht_cap
, sizeof(vht_cap
));
573 ieee80211_apply_vhtcap_overrides(sdata
, &vht_cap
);
575 /* determine capability flags */
578 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_80P80MHZ
) {
579 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ
;
580 cap
|= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
;
583 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_160MHZ
) {
584 cap
&= ~IEEE80211_VHT_CAP_SHORT_GI_160
;
585 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
;
589 * Some APs apparently get confused if our capabilities are better
590 * than theirs, so restrict what we advertise in the assoc request.
592 if (!(ap_vht_cap
->vht_cap_info
&
593 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE
)))
594 cap
&= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE
;
596 /* reserve and fill IE */
597 pos
= skb_put(skb
, sizeof(struct ieee80211_vht_cap
) + 2);
598 ieee80211_ie_build_vht_cap(pos
, &vht_cap
, cap
);
601 static void ieee80211_send_assoc(struct ieee80211_sub_if_data
*sdata
)
603 struct ieee80211_local
*local
= sdata
->local
;
604 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
605 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
607 struct ieee80211_mgmt
*mgmt
;
609 size_t offset
= 0, noffset
;
610 int i
, count
, rates_len
, supp_rates_len
, shift
;
612 struct ieee80211_supported_band
*sband
;
613 struct ieee80211_chanctx_conf
*chanctx_conf
;
614 struct ieee80211_channel
*chan
;
615 u32 rate_flags
, rates
= 0;
617 sdata_assert_lock(sdata
);
620 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
621 if (WARN_ON(!chanctx_conf
)) {
625 chan
= chanctx_conf
->def
.chan
;
626 rate_flags
= ieee80211_chandef_rate_flags(&chanctx_conf
->def
);
628 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
629 shift
= ieee80211_vif_get_shift(&sdata
->vif
);
631 if (assoc_data
->supp_rates_len
) {
633 * Get all rates supported by the device and the AP as
634 * some APs don't like getting a superset of their rates
635 * in the association request (e.g. D-Link DAP 1353 in
638 rates_len
= ieee80211_parse_bitrates(&chanctx_conf
->def
, sband
,
639 assoc_data
->supp_rates
,
640 assoc_data
->supp_rates_len
,
644 * In case AP not provide any supported rates information
645 * before association, we send information element(s) with
646 * all rates that we support.
649 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
650 if ((rate_flags
& sband
->bitrates
[i
].flags
)
658 skb
= alloc_skb(local
->hw
.extra_tx_headroom
+
659 sizeof(*mgmt
) + /* bit too much but doesn't matter */
660 2 + assoc_data
->ssid_len
+ /* SSID */
661 4 + rates_len
+ /* (extended) rates */
662 4 + /* power capability */
663 2 + 2 * sband
->n_channels
+ /* supported channels */
664 2 + sizeof(struct ieee80211_ht_cap
) + /* HT */
665 2 + sizeof(struct ieee80211_vht_cap
) + /* VHT */
666 assoc_data
->ie_len
+ /* extra IEs */
672 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
674 capab
= WLAN_CAPABILITY_ESS
;
676 if (sband
->band
== IEEE80211_BAND_2GHZ
) {
677 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
678 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
679 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
680 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
683 if (assoc_data
->capability
& WLAN_CAPABILITY_PRIVACY
)
684 capab
|= WLAN_CAPABILITY_PRIVACY
;
686 if ((assoc_data
->capability
& WLAN_CAPABILITY_SPECTRUM_MGMT
) &&
687 (local
->hw
.flags
& IEEE80211_HW_SPECTRUM_MGMT
))
688 capab
|= WLAN_CAPABILITY_SPECTRUM_MGMT
;
690 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
692 memcpy(mgmt
->da
, assoc_data
->bss
->bssid
, ETH_ALEN
);
693 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
694 memcpy(mgmt
->bssid
, assoc_data
->bss
->bssid
, ETH_ALEN
);
696 if (!is_zero_ether_addr(assoc_data
->prev_bssid
)) {
698 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
699 IEEE80211_STYPE_REASSOC_REQ
);
700 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
701 mgmt
->u
.reassoc_req
.listen_interval
=
702 cpu_to_le16(local
->hw
.conf
.listen_interval
);
703 memcpy(mgmt
->u
.reassoc_req
.current_ap
, assoc_data
->prev_bssid
,
707 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
708 IEEE80211_STYPE_ASSOC_REQ
);
709 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
710 mgmt
->u
.assoc_req
.listen_interval
=
711 cpu_to_le16(local
->hw
.conf
.listen_interval
);
715 pos
= skb_put(skb
, 2 + assoc_data
->ssid_len
);
716 *pos
++ = WLAN_EID_SSID
;
717 *pos
++ = assoc_data
->ssid_len
;
718 memcpy(pos
, assoc_data
->ssid
, assoc_data
->ssid_len
);
720 /* add all rates which were marked to be used above */
721 supp_rates_len
= rates_len
;
722 if (supp_rates_len
> 8)
725 pos
= skb_put(skb
, supp_rates_len
+ 2);
726 *pos
++ = WLAN_EID_SUPP_RATES
;
727 *pos
++ = supp_rates_len
;
730 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
731 if (BIT(i
) & rates
) {
732 int rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
740 if (rates_len
> count
) {
741 pos
= skb_put(skb
, rates_len
- count
+ 2);
742 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
743 *pos
++ = rates_len
- count
;
745 for (i
++; i
< sband
->n_bitrates
; i
++) {
746 if (BIT(i
) & rates
) {
748 rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
755 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
) {
756 /* 1. power capabilities */
757 pos
= skb_put(skb
, 4);
758 *pos
++ = WLAN_EID_PWR_CAPABILITY
;
760 *pos
++ = 0; /* min tx power */
762 *pos
++ = ieee80211_chandef_max_power(&chanctx_conf
->def
);
764 /* 2. supported channels */
765 /* TODO: get this in reg domain format */
766 pos
= skb_put(skb
, 2 * sband
->n_channels
+ 2);
767 *pos
++ = WLAN_EID_SUPPORTED_CHANNELS
;
768 *pos
++ = 2 * sband
->n_channels
;
769 for (i
= 0; i
< sband
->n_channels
; i
++) {
770 *pos
++ = ieee80211_frequency_to_channel(
771 sband
->channels
[i
].center_freq
);
772 *pos
++ = 1; /* one channel in the subband*/
776 /* if present, add any custom IEs that go before HT */
777 if (assoc_data
->ie_len
&& assoc_data
->ie
) {
778 static const u8 before_ht
[] = {
781 WLAN_EID_EXT_SUPP_RATES
,
782 WLAN_EID_PWR_CAPABILITY
,
783 WLAN_EID_SUPPORTED_CHANNELS
,
786 WLAN_EID_RRM_ENABLED_CAPABILITIES
,
787 WLAN_EID_MOBILITY_DOMAIN
,
788 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
790 noffset
= ieee80211_ie_split(assoc_data
->ie
, assoc_data
->ie_len
,
791 before_ht
, ARRAY_SIZE(before_ht
),
793 pos
= skb_put(skb
, noffset
- offset
);
794 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
798 if (WARN_ON_ONCE((ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
799 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)))
800 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
802 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
803 ieee80211_add_ht_ie(sdata
, skb
, assoc_data
->ap_ht_param
,
804 sband
, chan
, sdata
->smps_mode
);
806 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
807 ieee80211_add_vht_ie(sdata
, skb
, sband
,
808 &assoc_data
->ap_vht_cap
);
810 /* if present, add any custom non-vendor IEs that go after HT */
811 if (assoc_data
->ie_len
&& assoc_data
->ie
) {
812 noffset
= ieee80211_ie_split_vendor(assoc_data
->ie
,
815 pos
= skb_put(skb
, noffset
- offset
);
816 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
820 if (assoc_data
->wmm
) {
821 if (assoc_data
->uapsd
) {
822 qos_info
= ifmgd
->uapsd_queues
;
823 qos_info
|= (ifmgd
->uapsd_max_sp_len
<<
824 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT
);
829 pos
= skb_put(skb
, 9);
830 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
831 *pos
++ = 7; /* len */
832 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
835 *pos
++ = 2; /* WME */
836 *pos
++ = 0; /* WME info */
837 *pos
++ = 1; /* WME ver */
841 /* add any remaining custom (i.e. vendor specific here) IEs */
842 if (assoc_data
->ie_len
&& assoc_data
->ie
) {
843 noffset
= assoc_data
->ie_len
;
844 pos
= skb_put(skb
, noffset
- offset
);
845 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
848 drv_mgd_prepare_tx(local
, sdata
);
850 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
851 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
852 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
|
853 IEEE80211_TX_INTFL_MLME_CONN_TX
;
854 ieee80211_tx_skb(sdata
, skb
);
857 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
858 struct ieee80211_sub_if_data
*sdata
)
860 struct ieee80211_pspoll
*pspoll
;
863 skb
= ieee80211_pspoll_get(&local
->hw
, &sdata
->vif
);
867 pspoll
= (struct ieee80211_pspoll
*) skb
->data
;
868 pspoll
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
870 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
871 ieee80211_tx_skb(sdata
, skb
);
874 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
875 struct ieee80211_sub_if_data
*sdata
,
879 struct ieee80211_hdr_3addr
*nullfunc
;
880 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
882 skb
= ieee80211_nullfunc_get(&local
->hw
, &sdata
->vif
);
886 nullfunc
= (struct ieee80211_hdr_3addr
*) skb
->data
;
888 nullfunc
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
890 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
|
891 IEEE80211_TX_INTFL_OFFCHAN_TX_OK
;
893 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
894 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
;
896 if (ifmgd
->flags
& (IEEE80211_STA_BEACON_POLL
|
897 IEEE80211_STA_CONNECTION_POLL
))
898 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_USE_MINRATE
;
900 ieee80211_tx_skb(sdata
, skb
);
903 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local
*local
,
904 struct ieee80211_sub_if_data
*sdata
)
907 struct ieee80211_hdr
*nullfunc
;
910 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
913 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 30);
917 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
919 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 30);
920 memset(nullfunc
, 0, 30);
921 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
922 IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
923 nullfunc
->frame_control
= fc
;
924 memcpy(nullfunc
->addr1
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
925 memcpy(nullfunc
->addr2
, sdata
->vif
.addr
, ETH_ALEN
);
926 memcpy(nullfunc
->addr3
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
927 memcpy(nullfunc
->addr4
, sdata
->vif
.addr
, ETH_ALEN
);
929 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
930 ieee80211_tx_skb(sdata
, skb
);
933 /* spectrum management related things */
934 static void ieee80211_chswitch_work(struct work_struct
*work
)
936 struct ieee80211_sub_if_data
*sdata
=
937 container_of(work
, struct ieee80211_sub_if_data
, u
.mgd
.chswitch_work
);
938 struct ieee80211_local
*local
= sdata
->local
;
939 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
941 if (!ieee80211_sdata_running(sdata
))
945 if (!ifmgd
->associated
)
948 local
->_oper_chandef
= local
->csa_chandef
;
950 if (!local
->ops
->channel_switch
) {
951 /* call "hw_config" only if doing sw channel switch */
952 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_CHANNEL
);
954 /* update the device channel directly */
955 local
->hw
.conf
.chandef
= local
->_oper_chandef
;
958 /* XXX: shouldn't really modify cfg80211-owned data! */
959 ifmgd
->associated
->channel
= local
->_oper_chandef
.chan
;
961 /* XXX: wait for a beacon first? */
962 ieee80211_wake_queues_by_reason(&local
->hw
,
963 IEEE80211_MAX_QUEUE_MAP
,
964 IEEE80211_QUEUE_STOP_REASON_CSA
);
966 ifmgd
->flags
&= ~IEEE80211_STA_CSA_RECEIVED
;
970 void ieee80211_chswitch_done(struct ieee80211_vif
*vif
, bool success
)
972 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
973 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
975 trace_api_chswitch_done(sdata
, success
);
978 "driver channel switch failed, disconnecting\n");
979 ieee80211_queue_work(&sdata
->local
->hw
,
980 &ifmgd
->csa_connection_drop_work
);
982 ieee80211_queue_work(&sdata
->local
->hw
, &ifmgd
->chswitch_work
);
985 EXPORT_SYMBOL(ieee80211_chswitch_done
);
987 static void ieee80211_chswitch_timer(unsigned long data
)
989 struct ieee80211_sub_if_data
*sdata
=
990 (struct ieee80211_sub_if_data
*) data
;
992 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->u
.mgd
.chswitch_work
);
996 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
997 u64 timestamp
, struct ieee802_11_elems
*elems
,
1000 struct ieee80211_local
*local
= sdata
->local
;
1001 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1002 struct cfg80211_bss
*cbss
= ifmgd
->associated
;
1003 struct ieee80211_bss
*bss
;
1004 struct ieee80211_chanctx
*chanctx
;
1005 enum ieee80211_band new_band
;
1010 struct ieee80211_channel
*new_chan
;
1011 struct cfg80211_chan_def new_chandef
= {};
1012 struct cfg80211_chan_def new_vht_chandef
= {};
1013 const struct ieee80211_sec_chan_offs_ie
*sec_chan_offs
;
1014 const struct ieee80211_wide_bw_chansw_ie
*wide_bw_chansw_ie
;
1015 const struct ieee80211_ht_operation
*ht_oper
;
1016 int secondary_channel_offset
= -1;
1018 sdata_assert_lock(sdata
);
1023 if (local
->scanning
)
1026 /* disregard subsequent announcements if we are already processing */
1027 if (ifmgd
->flags
& IEEE80211_STA_CSA_RECEIVED
)
1030 sec_chan_offs
= elems
->sec_chan_offs
;
1031 wide_bw_chansw_ie
= elems
->wide_bw_chansw_ie
;
1032 ht_oper
= elems
->ht_operation
;
1034 if (ifmgd
->flags
& (IEEE80211_STA_DISABLE_HT
|
1035 IEEE80211_STA_DISABLE_40MHZ
)) {
1036 sec_chan_offs
= NULL
;
1037 wide_bw_chansw_ie
= NULL
;
1038 /* only used for bandwidth here */
1042 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
1043 wide_bw_chansw_ie
= NULL
;
1045 if (elems
->ext_chansw_ie
) {
1046 if (!ieee80211_operating_class_to_band(
1047 elems
->ext_chansw_ie
->new_operating_class
,
1050 "cannot understand ECSA IE operating class %d, disconnecting\n",
1051 elems
->ext_chansw_ie
->new_operating_class
);
1052 ieee80211_queue_work(&local
->hw
,
1053 &ifmgd
->csa_connection_drop_work
);
1055 new_chan_no
= elems
->ext_chansw_ie
->new_ch_num
;
1056 count
= elems
->ext_chansw_ie
->count
;
1057 mode
= elems
->ext_chansw_ie
->mode
;
1058 } else if (elems
->ch_switch_ie
) {
1059 new_band
= cbss
->channel
->band
;
1060 new_chan_no
= elems
->ch_switch_ie
->new_ch_num
;
1061 count
= elems
->ch_switch_ie
->count
;
1062 mode
= elems
->ch_switch_ie
->mode
;
1064 /* nothing here we understand */
1068 bss
= (void *)cbss
->priv
;
1070 new_freq
= ieee80211_channel_to_frequency(new_chan_no
, new_band
);
1071 new_chan
= ieee80211_get_channel(sdata
->local
->hw
.wiphy
, new_freq
);
1072 if (!new_chan
|| new_chan
->flags
& IEEE80211_CHAN_DISABLED
) {
1074 "AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
1075 ifmgd
->associated
->bssid
, new_freq
);
1076 ieee80211_queue_work(&local
->hw
,
1077 &ifmgd
->csa_connection_drop_work
);
1081 if (!beacon
&& sec_chan_offs
) {
1082 secondary_channel_offset
= sec_chan_offs
->sec_chan_offs
;
1083 } else if (beacon
&& ht_oper
) {
1084 secondary_channel_offset
=
1085 ht_oper
->ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
;
1086 } else if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
1088 * If it's not a beacon, HT is enabled and the IE not present,
1089 * it's 20 MHz, 802.11-2012 8.5.2.6:
1090 * This element [the Secondary Channel Offset Element] is
1091 * present when switching to a 40 MHz channel. It may be
1092 * present when switching to a 20 MHz channel (in which
1093 * case the secondary channel offset is set to SCN).
1095 secondary_channel_offset
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
1098 switch (secondary_channel_offset
) {
1100 /* secondary_channel_offset was present but is invalid */
1101 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
1102 cfg80211_chandef_create(&new_chandef
, new_chan
,
1105 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
1106 cfg80211_chandef_create(&new_chandef
, new_chan
,
1107 NL80211_CHAN_HT40PLUS
);
1109 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
1110 cfg80211_chandef_create(&new_chandef
, new_chan
,
1111 NL80211_CHAN_HT40MINUS
);
1114 cfg80211_chandef_create(&new_chandef
, new_chan
,
1115 NL80211_CHAN_NO_HT
);
1116 /* keep width for 5/10 MHz channels */
1117 switch (sdata
->vif
.bss_conf
.chandef
.width
) {
1118 case NL80211_CHAN_WIDTH_5
:
1119 case NL80211_CHAN_WIDTH_10
:
1120 new_chandef
.width
= sdata
->vif
.bss_conf
.chandef
.width
;
1128 if (wide_bw_chansw_ie
) {
1129 new_vht_chandef
.chan
= new_chan
;
1130 new_vht_chandef
.center_freq1
=
1131 ieee80211_channel_to_frequency(
1132 wide_bw_chansw_ie
->new_center_freq_seg0
,
1135 switch (wide_bw_chansw_ie
->new_channel_width
) {
1137 /* hmmm, ignore VHT and use HT if present */
1138 case IEEE80211_VHT_CHANWIDTH_USE_HT
:
1139 new_vht_chandef
.chan
= NULL
;
1141 case IEEE80211_VHT_CHANWIDTH_80MHZ
:
1142 new_vht_chandef
.width
= NL80211_CHAN_WIDTH_80
;
1144 case IEEE80211_VHT_CHANWIDTH_160MHZ
:
1145 new_vht_chandef
.width
= NL80211_CHAN_WIDTH_160
;
1147 case IEEE80211_VHT_CHANWIDTH_80P80MHZ
:
1148 /* field is otherwise reserved */
1149 new_vht_chandef
.center_freq2
=
1150 ieee80211_channel_to_frequency(
1151 wide_bw_chansw_ie
->new_center_freq_seg1
,
1153 new_vht_chandef
.width
= NL80211_CHAN_WIDTH_80P80
;
1156 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_80P80MHZ
&&
1157 new_vht_chandef
.width
== NL80211_CHAN_WIDTH_80P80
)
1158 chandef_downgrade(&new_vht_chandef
);
1159 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_160MHZ
&&
1160 new_vht_chandef
.width
== NL80211_CHAN_WIDTH_160
)
1161 chandef_downgrade(&new_vht_chandef
);
1162 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_40MHZ
&&
1163 new_vht_chandef
.width
> NL80211_CHAN_WIDTH_20
)
1164 chandef_downgrade(&new_vht_chandef
);
1167 /* if VHT data is there validate & use it */
1168 if (new_vht_chandef
.chan
) {
1169 if (!cfg80211_chandef_compatible(&new_vht_chandef
,
1172 "AP %pM CSA has inconsistent channel data, disconnecting\n",
1173 ifmgd
->associated
->bssid
);
1174 ieee80211_queue_work(&local
->hw
,
1175 &ifmgd
->csa_connection_drop_work
);
1178 new_chandef
= new_vht_chandef
;
1181 if (!cfg80211_chandef_usable(local
->hw
.wiphy
, &new_chandef
,
1182 IEEE80211_CHAN_DISABLED
)) {
1184 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1185 ifmgd
->associated
->bssid
, new_freq
,
1186 new_chandef
.width
, new_chandef
.center_freq1
,
1187 new_chandef
.center_freq2
);
1188 ieee80211_queue_work(&local
->hw
,
1189 &ifmgd
->csa_connection_drop_work
);
1193 ifmgd
->flags
|= IEEE80211_STA_CSA_RECEIVED
;
1195 if (local
->use_chanctx
) {
1197 "not handling channel switch with channel contexts\n");
1198 ieee80211_queue_work(&local
->hw
,
1199 &ifmgd
->csa_connection_drop_work
);
1203 mutex_lock(&local
->chanctx_mtx
);
1204 if (WARN_ON(!rcu_access_pointer(sdata
->vif
.chanctx_conf
))) {
1205 mutex_unlock(&local
->chanctx_mtx
);
1208 chanctx
= container_of(rcu_access_pointer(sdata
->vif
.chanctx_conf
),
1209 struct ieee80211_chanctx
, conf
);
1210 if (chanctx
->refcount
> 1) {
1212 "channel switch with multiple interfaces on the same channel, disconnecting\n");
1213 ieee80211_queue_work(&local
->hw
,
1214 &ifmgd
->csa_connection_drop_work
);
1215 mutex_unlock(&local
->chanctx_mtx
);
1218 mutex_unlock(&local
->chanctx_mtx
);
1220 local
->csa_chandef
= new_chandef
;
1223 ieee80211_stop_queues_by_reason(&local
->hw
,
1224 IEEE80211_MAX_QUEUE_MAP
,
1225 IEEE80211_QUEUE_STOP_REASON_CSA
);
1227 if (local
->ops
->channel_switch
) {
1228 /* use driver's channel switch callback */
1229 struct ieee80211_channel_switch ch_switch
= {
1230 .timestamp
= timestamp
,
1232 .chandef
= new_chandef
,
1236 drv_channel_switch(local
, &ch_switch
);
1240 /* channel switch handled in software */
1242 ieee80211_queue_work(&local
->hw
, &ifmgd
->chswitch_work
);
1244 mod_timer(&ifmgd
->chswitch_timer
,
1245 TU_TO_EXP_TIME(count
* cbss
->beacon_interval
));
1248 static u32
ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data
*sdata
,
1249 struct ieee80211_channel
*channel
,
1250 const u8
*country_ie
, u8 country_ie_len
,
1251 const u8
*pwr_constr_elem
)
1253 struct ieee80211_country_ie_triplet
*triplet
;
1254 int chan
= ieee80211_frequency_to_channel(channel
->center_freq
);
1255 int i
, chan_pwr
, chan_increment
, new_ap_level
;
1256 bool have_chan_pwr
= false;
1259 if (country_ie_len
% 2 || country_ie_len
< IEEE80211_COUNTRY_IE_MIN_LEN
)
1262 triplet
= (void *)(country_ie
+ 3);
1263 country_ie_len
-= 3;
1265 switch (channel
->band
) {
1269 case IEEE80211_BAND_2GHZ
:
1270 case IEEE80211_BAND_60GHZ
:
1273 case IEEE80211_BAND_5GHZ
:
1279 while (country_ie_len
>= 3) {
1280 u8 first_channel
= triplet
->chans
.first_channel
;
1282 if (first_channel
>= IEEE80211_COUNTRY_EXTENSION_ID
)
1285 for (i
= 0; i
< triplet
->chans
.num_channels
; i
++) {
1286 if (first_channel
+ i
* chan_increment
== chan
) {
1287 have_chan_pwr
= true;
1288 chan_pwr
= triplet
->chans
.max_power
;
1297 country_ie_len
-= 3;
1303 new_ap_level
= max_t(int, 0, chan_pwr
- *pwr_constr_elem
);
1305 if (sdata
->ap_power_level
== new_ap_level
)
1309 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1310 new_ap_level
, chan_pwr
, *pwr_constr_elem
,
1311 sdata
->u
.mgd
.bssid
);
1312 sdata
->ap_power_level
= new_ap_level
;
1313 if (__ieee80211_recalc_txpower(sdata
))
1314 return BSS_CHANGED_TXPOWER
;
1319 static void ieee80211_enable_ps(struct ieee80211_local
*local
,
1320 struct ieee80211_sub_if_data
*sdata
)
1322 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1325 * If we are scanning right now then the parameters will
1326 * take effect when scan finishes.
1328 if (local
->scanning
)
1331 if (conf
->dynamic_ps_timeout
> 0 &&
1332 !(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_PS
)) {
1333 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1334 msecs_to_jiffies(conf
->dynamic_ps_timeout
));
1336 if (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
)
1337 ieee80211_send_nullfunc(local
, sdata
, 1);
1339 if ((local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) &&
1340 (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
))
1343 conf
->flags
|= IEEE80211_CONF_PS
;
1344 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1348 static void ieee80211_change_ps(struct ieee80211_local
*local
)
1350 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1352 if (local
->ps_sdata
) {
1353 ieee80211_enable_ps(local
, local
->ps_sdata
);
1354 } else if (conf
->flags
& IEEE80211_CONF_PS
) {
1355 conf
->flags
&= ~IEEE80211_CONF_PS
;
1356 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1357 del_timer_sync(&local
->dynamic_ps_timer
);
1358 cancel_work_sync(&local
->dynamic_ps_enable_work
);
1362 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data
*sdata
)
1364 struct ieee80211_if_managed
*mgd
= &sdata
->u
.mgd
;
1365 struct sta_info
*sta
= NULL
;
1366 bool authorized
= false;
1368 if (!mgd
->powersave
)
1374 if (!mgd
->associated
)
1377 if (mgd
->flags
& (IEEE80211_STA_BEACON_POLL
|
1378 IEEE80211_STA_CONNECTION_POLL
))
1381 if (!mgd
->have_beacon
)
1385 sta
= sta_info_get(sdata
, mgd
->bssid
);
1387 authorized
= test_sta_flag(sta
, WLAN_STA_AUTHORIZED
);
1393 /* need to hold RTNL or interface lock */
1394 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
)
1396 struct ieee80211_sub_if_data
*sdata
, *found
= NULL
;
1400 if (!(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_PS
)) {
1401 local
->ps_sdata
= NULL
;
1405 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1406 if (!ieee80211_sdata_running(sdata
))
1408 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1409 /* If an AP vif is found, then disable PS
1410 * by setting the count to zero thereby setting
1416 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
1422 if (count
== 1 && ieee80211_powersave_allowed(found
)) {
1426 latency
= pm_qos_request(PM_QOS_NETWORK_LATENCY
);
1428 beaconint_us
= ieee80211_tu_to_usec(
1429 found
->vif
.bss_conf
.beacon_int
);
1431 timeout
= local
->dynamic_ps_forced_timeout
;
1434 * Go to full PSM if the user configures a very low
1435 * latency requirement.
1436 * The 2000 second value is there for compatibility
1437 * until the PM_QOS_NETWORK_LATENCY is configured
1440 if (latency
> (1900 * USEC_PER_MSEC
) &&
1441 latency
!= (2000 * USEC_PER_SEC
))
1446 local
->hw
.conf
.dynamic_ps_timeout
= timeout
;
1448 if (beaconint_us
> latency
) {
1449 local
->ps_sdata
= NULL
;
1452 u8 dtimper
= found
->u
.mgd
.dtim_period
;
1454 /* If the TIM IE is invalid, pretend the value is 1 */
1457 else if (dtimper
> 1)
1458 maxslp
= min_t(int, dtimper
,
1459 latency
/ beaconint_us
);
1461 local
->hw
.conf
.max_sleep_period
= maxslp
;
1462 local
->hw
.conf
.ps_dtim_period
= dtimper
;
1463 local
->ps_sdata
= found
;
1466 local
->ps_sdata
= NULL
;
1469 ieee80211_change_ps(local
);
1472 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data
*sdata
)
1474 bool ps_allowed
= ieee80211_powersave_allowed(sdata
);
1476 if (sdata
->vif
.bss_conf
.ps
!= ps_allowed
) {
1477 sdata
->vif
.bss_conf
.ps
= ps_allowed
;
1478 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_PS
);
1482 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
)
1484 struct ieee80211_local
*local
=
1485 container_of(work
, struct ieee80211_local
,
1486 dynamic_ps_disable_work
);
1488 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
1489 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
1490 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1493 ieee80211_wake_queues_by_reason(&local
->hw
,
1494 IEEE80211_MAX_QUEUE_MAP
,
1495 IEEE80211_QUEUE_STOP_REASON_PS
);
1498 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
)
1500 struct ieee80211_local
*local
=
1501 container_of(work
, struct ieee80211_local
,
1502 dynamic_ps_enable_work
);
1503 struct ieee80211_sub_if_data
*sdata
= local
->ps_sdata
;
1504 struct ieee80211_if_managed
*ifmgd
;
1505 unsigned long flags
;
1508 /* can only happen when PS was just disabled anyway */
1512 ifmgd
= &sdata
->u
.mgd
;
1514 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
)
1517 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
1518 /* don't enter PS if TX frames are pending */
1519 if (drv_tx_frames_pending(local
)) {
1520 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1522 local
->hw
.conf
.dynamic_ps_timeout
));
1527 * transmission can be stopped by others which leads to
1528 * dynamic_ps_timer expiry. Postpone the ps timer if it
1529 * is not the actual idle state.
1531 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
1532 for (q
= 0; q
< local
->hw
.queues
; q
++) {
1533 if (local
->queue_stop_reasons
[q
]) {
1534 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
,
1536 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1538 local
->hw
.conf
.dynamic_ps_timeout
));
1542 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
1545 if ((local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) &&
1546 !(ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1547 if (drv_tx_frames_pending(local
)) {
1548 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1550 local
->hw
.conf
.dynamic_ps_timeout
));
1552 ieee80211_send_nullfunc(local
, sdata
, 1);
1553 /* Flush to get the tx status of nullfunc frame */
1554 ieee80211_flush_queues(local
, sdata
);
1558 if (!((local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) &&
1559 (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
)) ||
1560 (ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1561 ifmgd
->flags
&= ~IEEE80211_STA_NULLFUNC_ACKED
;
1562 local
->hw
.conf
.flags
|= IEEE80211_CONF_PS
;
1563 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1567 void ieee80211_dynamic_ps_timer(unsigned long data
)
1569 struct ieee80211_local
*local
= (void *) data
;
1571 if (local
->quiescing
|| local
->suspended
)
1574 ieee80211_queue_work(&local
->hw
, &local
->dynamic_ps_enable_work
);
1577 void ieee80211_dfs_cac_timer_work(struct work_struct
*work
)
1579 struct delayed_work
*delayed_work
=
1580 container_of(work
, struct delayed_work
, work
);
1581 struct ieee80211_sub_if_data
*sdata
=
1582 container_of(delayed_work
, struct ieee80211_sub_if_data
,
1583 dfs_cac_timer_work
);
1585 ieee80211_vif_release_channel(sdata
);
1587 cfg80211_cac_event(sdata
->dev
, NL80211_RADAR_CAC_FINISHED
, GFP_KERNEL
);
1591 static bool ieee80211_sta_wmm_params(struct ieee80211_local
*local
,
1592 struct ieee80211_sub_if_data
*sdata
,
1593 const u8
*wmm_param
, size_t wmm_param_len
)
1595 struct ieee80211_tx_queue_params params
;
1596 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1600 u8 uapsd_queues
= 0;
1602 if (!local
->ops
->conf_tx
)
1605 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1611 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
1614 if (ifmgd
->flags
& IEEE80211_STA_UAPSD_ENABLED
)
1615 uapsd_queues
= ifmgd
->uapsd_queues
;
1617 count
= wmm_param
[6] & 0x0f;
1618 if (count
== ifmgd
->wmm_last_param_set
)
1620 ifmgd
->wmm_last_param_set
= count
;
1622 pos
= wmm_param
+ 8;
1623 left
= wmm_param_len
- 8;
1625 memset(¶ms
, 0, sizeof(params
));
1628 for (; left
>= 4; left
-= 4, pos
+= 4) {
1629 int aci
= (pos
[0] >> 5) & 0x03;
1630 int acm
= (pos
[0] >> 4) & 0x01;
1638 sdata
->wmm_acm
|= BIT(1) | BIT(2); /* BK/- */
1639 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
)
1645 sdata
->wmm_acm
|= BIT(4) | BIT(5); /* CL/VI */
1646 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VI
)
1652 sdata
->wmm_acm
|= BIT(6) | BIT(7); /* VO/NC */
1653 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
)
1660 sdata
->wmm_acm
|= BIT(0) | BIT(3); /* BE/EE */
1661 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BE
)
1666 params
.aifs
= pos
[0] & 0x0f;
1667 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
1668 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
1669 params
.txop
= get_unaligned_le16(pos
+ 2);
1671 params
.uapsd
= uapsd
;
1674 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1676 params
.aifs
, params
.cw_min
, params
.cw_max
,
1677 params
.txop
, params
.uapsd
);
1678 sdata
->tx_conf
[queue
] = params
;
1679 if (drv_conf_tx(local
, sdata
, queue
, ¶ms
))
1681 "failed to set TX queue parameters for queue %d\n",
1685 /* enable WMM or activate new settings */
1686 sdata
->vif
.bss_conf
.qos
= true;
1690 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1692 lockdep_assert_held(&sdata
->local
->mtx
);
1694 sdata
->u
.mgd
.flags
&= ~(IEEE80211_STA_CONNECTION_POLL
|
1695 IEEE80211_STA_BEACON_POLL
);
1696 ieee80211_run_deferred_scan(sdata
->local
);
1699 static void ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1701 mutex_lock(&sdata
->local
->mtx
);
1702 __ieee80211_stop_poll(sdata
);
1703 mutex_unlock(&sdata
->local
->mtx
);
1706 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
1707 u16 capab
, bool erp_valid
, u8 erp
)
1709 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1711 bool use_protection
;
1712 bool use_short_preamble
;
1713 bool use_short_slot
;
1716 use_protection
= (erp
& WLAN_ERP_USE_PROTECTION
) != 0;
1717 use_short_preamble
= (erp
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
1719 use_protection
= false;
1720 use_short_preamble
= !!(capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
);
1723 use_short_slot
= !!(capab
& WLAN_CAPABILITY_SHORT_SLOT_TIME
);
1724 if (ieee80211_get_sdata_band(sdata
) == IEEE80211_BAND_5GHZ
)
1725 use_short_slot
= true;
1727 if (use_protection
!= bss_conf
->use_cts_prot
) {
1728 bss_conf
->use_cts_prot
= use_protection
;
1729 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
1732 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
1733 bss_conf
->use_short_preamble
= use_short_preamble
;
1734 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
1737 if (use_short_slot
!= bss_conf
->use_short_slot
) {
1738 bss_conf
->use_short_slot
= use_short_slot
;
1739 changed
|= BSS_CHANGED_ERP_SLOT
;
1745 static void ieee80211_set_associated(struct ieee80211_sub_if_data
*sdata
,
1746 struct cfg80211_bss
*cbss
,
1747 u32 bss_info_changed
)
1749 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
1750 struct ieee80211_local
*local
= sdata
->local
;
1751 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1753 bss_info_changed
|= BSS_CHANGED_ASSOC
;
1754 bss_info_changed
|= ieee80211_handle_bss_capability(sdata
,
1755 bss_conf
->assoc_capability
, bss
->has_erp_value
, bss
->erp_value
);
1757 sdata
->u
.mgd
.beacon_timeout
= usecs_to_jiffies(ieee80211_tu_to_usec(
1758 beacon_loss_count
* bss_conf
->beacon_int
));
1760 sdata
->u
.mgd
.associated
= cbss
;
1761 memcpy(sdata
->u
.mgd
.bssid
, cbss
->bssid
, ETH_ALEN
);
1763 sdata
->u
.mgd
.flags
|= IEEE80211_STA_RESET_SIGNAL_AVE
;
1765 if (sdata
->vif
.p2p
) {
1766 const struct cfg80211_bss_ies
*ies
;
1769 ies
= rcu_dereference(cbss
->ies
);
1773 ret
= cfg80211_get_p2p_attr(
1774 ies
->data
, ies
->len
,
1775 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
1776 (u8
*) &bss_conf
->p2p_noa_attr
,
1777 sizeof(bss_conf
->p2p_noa_attr
));
1779 sdata
->u
.mgd
.p2p_noa_index
=
1780 bss_conf
->p2p_noa_attr
.index
;
1781 bss_info_changed
|= BSS_CHANGED_P2P_PS
;
1787 /* just to be sure */
1788 ieee80211_stop_poll(sdata
);
1790 ieee80211_led_assoc(local
, 1);
1792 if (sdata
->u
.mgd
.have_beacon
) {
1794 * If the AP is buggy we may get here with no DTIM period
1795 * known, so assume it's 1 which is the only safe assumption
1796 * in that case, although if the TIM IE is broken powersave
1797 * probably just won't work at all.
1799 bss_conf
->dtim_period
= sdata
->u
.mgd
.dtim_period
?: 1;
1800 bss_conf
->beacon_rate
= bss
->beacon_rate
;
1801 bss_info_changed
|= BSS_CHANGED_BEACON_INFO
;
1803 bss_conf
->beacon_rate
= NULL
;
1804 bss_conf
->dtim_period
= 0;
1807 bss_conf
->assoc
= 1;
1809 /* Tell the driver to monitor connection quality (if supported) */
1810 if (sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
&&
1811 bss_conf
->cqm_rssi_thold
)
1812 bss_info_changed
|= BSS_CHANGED_CQM
;
1814 /* Enable ARP filtering */
1815 if (bss_conf
->arp_addr_cnt
)
1816 bss_info_changed
|= BSS_CHANGED_ARP_FILTER
;
1818 ieee80211_bss_info_change_notify(sdata
, bss_info_changed
);
1820 mutex_lock(&local
->iflist_mtx
);
1821 ieee80211_recalc_ps(local
, -1);
1822 mutex_unlock(&local
->iflist_mtx
);
1824 ieee80211_recalc_smps(sdata
);
1825 ieee80211_recalc_ps_vif(sdata
);
1827 netif_carrier_on(sdata
->dev
);
1830 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data
*sdata
,
1831 u16 stype
, u16 reason
, bool tx
,
1834 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1835 struct ieee80211_local
*local
= sdata
->local
;
1838 sdata_assert_lock(sdata
);
1840 if (WARN_ON_ONCE(tx
&& !frame_buf
))
1843 if (WARN_ON(!ifmgd
->associated
))
1846 ieee80211_stop_poll(sdata
);
1848 ifmgd
->associated
= NULL
;
1849 netif_carrier_off(sdata
->dev
);
1852 * if we want to get out of ps before disassoc (why?) we have
1853 * to do it before sending disassoc, as otherwise the null-packet
1856 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
1857 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
1858 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1860 local
->ps_sdata
= NULL
;
1862 /* disable per-vif ps */
1863 ieee80211_recalc_ps_vif(sdata
);
1865 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1867 ieee80211_flush_queues(local
, sdata
);
1869 /* deauthenticate/disassociate now */
1870 if (tx
|| frame_buf
)
1871 ieee80211_send_deauth_disassoc(sdata
, ifmgd
->bssid
, stype
,
1872 reason
, tx
, frame_buf
);
1874 /* flush out frame */
1876 ieee80211_flush_queues(local
, sdata
);
1878 /* clear bssid only after building the needed mgmt frames */
1879 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
1881 /* remove AP and TDLS peers */
1882 sta_info_flush_defer(sdata
);
1884 /* finally reset all BSS / config parameters */
1885 changed
|= ieee80211_reset_erp_info(sdata
);
1887 ieee80211_led_assoc(local
, 0);
1888 changed
|= BSS_CHANGED_ASSOC
;
1889 sdata
->vif
.bss_conf
.assoc
= false;
1891 ifmgd
->p2p_noa_index
= -1;
1892 memset(&sdata
->vif
.bss_conf
.p2p_noa_attr
, 0,
1893 sizeof(sdata
->vif
.bss_conf
.p2p_noa_attr
));
1895 /* on the next assoc, re-program HT/VHT parameters */
1896 memset(&ifmgd
->ht_capa
, 0, sizeof(ifmgd
->ht_capa
));
1897 memset(&ifmgd
->ht_capa_mask
, 0, sizeof(ifmgd
->ht_capa_mask
));
1898 memset(&ifmgd
->vht_capa
, 0, sizeof(ifmgd
->vht_capa
));
1899 memset(&ifmgd
->vht_capa_mask
, 0, sizeof(ifmgd
->vht_capa_mask
));
1901 sdata
->ap_power_level
= IEEE80211_UNSET_POWER_LEVEL
;
1903 del_timer_sync(&local
->dynamic_ps_timer
);
1904 cancel_work_sync(&local
->dynamic_ps_enable_work
);
1906 /* Disable ARP filtering */
1907 if (sdata
->vif
.bss_conf
.arp_addr_cnt
)
1908 changed
|= BSS_CHANGED_ARP_FILTER
;
1910 sdata
->vif
.bss_conf
.qos
= false;
1911 changed
|= BSS_CHANGED_QOS
;
1913 /* The BSSID (not really interesting) and HT changed */
1914 changed
|= BSS_CHANGED_BSSID
| BSS_CHANGED_HT
;
1915 ieee80211_bss_info_change_notify(sdata
, changed
);
1917 /* disassociated - set to defaults now */
1918 ieee80211_set_wmm_default(sdata
, false);
1920 del_timer_sync(&sdata
->u
.mgd
.conn_mon_timer
);
1921 del_timer_sync(&sdata
->u
.mgd
.bcn_mon_timer
);
1922 del_timer_sync(&sdata
->u
.mgd
.timer
);
1923 del_timer_sync(&sdata
->u
.mgd
.chswitch_timer
);
1925 sdata
->vif
.bss_conf
.dtim_period
= 0;
1926 sdata
->vif
.bss_conf
.beacon_rate
= NULL
;
1928 ifmgd
->have_beacon
= false;
1931 ieee80211_vif_release_channel(sdata
);
1934 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1935 struct ieee80211_hdr
*hdr
)
1938 * We can postpone the mgd.timer whenever receiving unicast frames
1939 * from AP because we know that the connection is working both ways
1940 * at that time. But multicast frames (and hence also beacons) must
1941 * be ignored here, because we need to trigger the timer during
1942 * data idle periods for sending the periodic probe request to the
1943 * AP we're connected to.
1945 if (is_multicast_ether_addr(hdr
->addr1
))
1948 ieee80211_sta_reset_conn_monitor(sdata
);
1951 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data
*sdata
)
1953 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1954 struct ieee80211_local
*local
= sdata
->local
;
1956 mutex_lock(&local
->mtx
);
1957 if (!(ifmgd
->flags
& (IEEE80211_STA_BEACON_POLL
|
1958 IEEE80211_STA_CONNECTION_POLL
))) {
1959 mutex_unlock(&local
->mtx
);
1963 __ieee80211_stop_poll(sdata
);
1965 mutex_lock(&local
->iflist_mtx
);
1966 ieee80211_recalc_ps(local
, -1);
1967 mutex_unlock(&local
->iflist_mtx
);
1969 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
1973 * We've received a probe response, but are not sure whether
1974 * we have or will be receiving any beacons or data, so let's
1975 * schedule the timers again, just in case.
1977 ieee80211_sta_reset_beacon_monitor(sdata
);
1979 mod_timer(&ifmgd
->conn_mon_timer
,
1980 round_jiffies_up(jiffies
+
1981 IEEE80211_CONNECTION_IDLE_TIME
));
1983 mutex_unlock(&local
->mtx
);
1986 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data
*sdata
,
1987 struct ieee80211_hdr
*hdr
, bool ack
)
1989 if (!ieee80211_is_data(hdr
->frame_control
))
1992 if (ieee80211_is_nullfunc(hdr
->frame_control
) &&
1993 sdata
->u
.mgd
.probe_send_count
> 0) {
1995 ieee80211_sta_reset_conn_monitor(sdata
);
1997 sdata
->u
.mgd
.nullfunc_failed
= true;
1998 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
2003 ieee80211_sta_reset_conn_monitor(sdata
);
2006 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data
*sdata
)
2008 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2010 u8
*dst
= ifmgd
->associated
->bssid
;
2011 u8 unicast_limit
= max(1, max_probe_tries
- 3);
2014 * Try sending broadcast probe requests for the last three
2015 * probe requests after the first ones failed since some
2016 * buggy APs only support broadcast probe requests.
2018 if (ifmgd
->probe_send_count
>= unicast_limit
)
2022 * When the hardware reports an accurate Tx ACK status, it's
2023 * better to send a nullfunc frame instead of a probe request,
2024 * as it will kick us off the AP quickly if we aren't associated
2025 * anymore. The timeout will be reset if the frame is ACKed by
2028 ifmgd
->probe_send_count
++;
2030 if (sdata
->local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) {
2031 ifmgd
->nullfunc_failed
= false;
2032 ieee80211_send_nullfunc(sdata
->local
, sdata
, 0);
2037 ssid
= ieee80211_bss_get_ie(ifmgd
->associated
, WLAN_EID_SSID
);
2038 if (WARN_ON_ONCE(ssid
== NULL
))
2043 ieee80211_send_probe_req(sdata
, dst
, ssid
+ 2, ssid_len
, NULL
,
2044 0, (u32
) -1, true, 0,
2045 ifmgd
->associated
->channel
, false);
2049 ifmgd
->probe_timeout
= jiffies
+ msecs_to_jiffies(probe_wait_ms
);
2050 run_again(sdata
, ifmgd
->probe_timeout
);
2051 if (sdata
->local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
2052 ieee80211_flush_queues(sdata
->local
, sdata
);
2055 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data
*sdata
,
2058 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2059 bool already
= false;
2061 if (!ieee80211_sdata_running(sdata
))
2066 if (!ifmgd
->associated
)
2069 mutex_lock(&sdata
->local
->mtx
);
2071 if (sdata
->local
->tmp_channel
|| sdata
->local
->scanning
) {
2072 mutex_unlock(&sdata
->local
->mtx
);
2077 mlme_dbg_ratelimited(sdata
,
2078 "detected beacon loss from AP (missed %d beacons) - probing\n",
2081 ieee80211_cqm_rssi_notify(&sdata
->vif
,
2082 NL80211_CQM_RSSI_BEACON_LOSS_EVENT
,
2087 * The driver/our work has already reported this event or the
2088 * connection monitoring has kicked in and we have already sent
2089 * a probe request. Or maybe the AP died and the driver keeps
2090 * reporting until we disassociate...
2092 * In either case we have to ignore the current call to this
2093 * function (except for setting the correct probe reason bit)
2094 * because otherwise we would reset the timer every time and
2095 * never check whether we received a probe response!
2097 if (ifmgd
->flags
& (IEEE80211_STA_BEACON_POLL
|
2098 IEEE80211_STA_CONNECTION_POLL
))
2102 ifmgd
->flags
|= IEEE80211_STA_BEACON_POLL
;
2104 ifmgd
->flags
|= IEEE80211_STA_CONNECTION_POLL
;
2106 mutex_unlock(&sdata
->local
->mtx
);
2111 mutex_lock(&sdata
->local
->iflist_mtx
);
2112 ieee80211_recalc_ps(sdata
->local
, -1);
2113 mutex_unlock(&sdata
->local
->iflist_mtx
);
2115 ifmgd
->probe_send_count
= 0;
2116 ieee80211_mgd_probe_ap_send(sdata
);
2118 sdata_unlock(sdata
);
2121 struct sk_buff
*ieee80211_ap_probereq_get(struct ieee80211_hw
*hw
,
2122 struct ieee80211_vif
*vif
)
2124 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2125 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2126 struct cfg80211_bss
*cbss
;
2127 struct sk_buff
*skb
;
2131 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
2134 sdata_assert_lock(sdata
);
2136 if (ifmgd
->associated
)
2137 cbss
= ifmgd
->associated
;
2138 else if (ifmgd
->auth_data
)
2139 cbss
= ifmgd
->auth_data
->bss
;
2140 else if (ifmgd
->assoc_data
)
2141 cbss
= ifmgd
->assoc_data
->bss
;
2146 ssid
= ieee80211_bss_get_ie(cbss
, WLAN_EID_SSID
);
2147 if (WARN_ON_ONCE(ssid
== NULL
))
2152 skb
= ieee80211_build_probe_req(sdata
, cbss
->bssid
,
2153 (u32
) -1, cbss
->channel
,
2160 EXPORT_SYMBOL(ieee80211_ap_probereq_get
);
2162 static void __ieee80211_disconnect(struct ieee80211_sub_if_data
*sdata
)
2164 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2165 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
2168 if (!ifmgd
->associated
) {
2169 sdata_unlock(sdata
);
2173 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
2174 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
2176 ifmgd
->flags
&= ~IEEE80211_STA_CSA_RECEIVED
;
2177 ieee80211_wake_queues_by_reason(&sdata
->local
->hw
,
2178 IEEE80211_MAX_QUEUE_MAP
,
2179 IEEE80211_QUEUE_STOP_REASON_CSA
);
2181 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
2182 IEEE80211_DEAUTH_FRAME_LEN
);
2183 sdata_unlock(sdata
);
2186 static void ieee80211_beacon_connection_loss_work(struct work_struct
*work
)
2188 struct ieee80211_sub_if_data
*sdata
=
2189 container_of(work
, struct ieee80211_sub_if_data
,
2190 u
.mgd
.beacon_connection_loss_work
);
2191 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2192 struct sta_info
*sta
;
2194 if (ifmgd
->associated
) {
2196 sta
= sta_info_get(sdata
, ifmgd
->bssid
);
2198 sta
->beacon_loss_count
++;
2202 if (ifmgd
->connection_loss
) {
2203 sdata_info(sdata
, "Connection to AP %pM lost\n",
2205 __ieee80211_disconnect(sdata
);
2207 ieee80211_mgd_probe_ap(sdata
, true);
2211 static void ieee80211_csa_connection_drop_work(struct work_struct
*work
)
2213 struct ieee80211_sub_if_data
*sdata
=
2214 container_of(work
, struct ieee80211_sub_if_data
,
2215 u
.mgd
.csa_connection_drop_work
);
2217 __ieee80211_disconnect(sdata
);
2220 void ieee80211_beacon_loss(struct ieee80211_vif
*vif
)
2222 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2223 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2225 trace_api_beacon_loss(sdata
);
2227 sdata
->u
.mgd
.connection_loss
= false;
2228 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2230 EXPORT_SYMBOL(ieee80211_beacon_loss
);
2232 void ieee80211_connection_loss(struct ieee80211_vif
*vif
)
2234 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2235 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2237 trace_api_connection_loss(sdata
);
2239 sdata
->u
.mgd
.connection_loss
= true;
2240 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2242 EXPORT_SYMBOL(ieee80211_connection_loss
);
2245 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data
*sdata
,
2248 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2250 sdata_assert_lock(sdata
);
2253 sta_info_destroy_addr(sdata
, auth_data
->bss
->bssid
);
2255 memset(sdata
->u
.mgd
.bssid
, 0, ETH_ALEN
);
2256 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2257 sdata
->u
.mgd
.flags
= 0;
2258 ieee80211_vif_release_channel(sdata
);
2261 cfg80211_put_bss(sdata
->local
->hw
.wiphy
, auth_data
->bss
);
2263 sdata
->u
.mgd
.auth_data
= NULL
;
2266 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data
*sdata
,
2267 struct ieee80211_mgmt
*mgmt
, size_t len
)
2269 struct ieee80211_local
*local
= sdata
->local
;
2270 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2272 struct ieee802_11_elems elems
;
2275 pos
= mgmt
->u
.auth
.variable
;
2276 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2277 if (!elems
.challenge
)
2279 auth_data
->expected_transaction
= 4;
2280 drv_mgd_prepare_tx(sdata
->local
, sdata
);
2281 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
2282 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
2283 IEEE80211_TX_INTFL_MLME_CONN_TX
;
2284 ieee80211_send_auth(sdata
, 3, auth_data
->algorithm
, 0,
2285 elems
.challenge
- 2, elems
.challenge_len
+ 2,
2286 auth_data
->bss
->bssid
, auth_data
->bss
->bssid
,
2287 auth_data
->key
, auth_data
->key_len
,
2288 auth_data
->key_idx
, tx_flags
);
2291 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data
*sdata
,
2292 struct ieee80211_mgmt
*mgmt
, size_t len
)
2294 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2296 u16 auth_alg
, auth_transaction
, status_code
;
2297 struct sta_info
*sta
;
2299 sdata_assert_lock(sdata
);
2304 if (!ifmgd
->auth_data
|| ifmgd
->auth_data
->done
)
2307 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
2309 if (!ether_addr_equal(bssid
, mgmt
->bssid
))
2312 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
2313 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
2314 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
2316 if (auth_alg
!= ifmgd
->auth_data
->algorithm
||
2317 auth_transaction
!= ifmgd
->auth_data
->expected_transaction
) {
2318 sdata_info(sdata
, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2319 mgmt
->sa
, auth_alg
, ifmgd
->auth_data
->algorithm
,
2321 ifmgd
->auth_data
->expected_transaction
);
2325 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2326 sdata_info(sdata
, "%pM denied authentication (status %d)\n",
2327 mgmt
->sa
, status_code
);
2328 ieee80211_destroy_auth_data(sdata
, false);
2329 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2333 switch (ifmgd
->auth_data
->algorithm
) {
2334 case WLAN_AUTH_OPEN
:
2335 case WLAN_AUTH_LEAP
:
2339 case WLAN_AUTH_SHARED_KEY
:
2340 if (ifmgd
->auth_data
->expected_transaction
!= 4) {
2341 ieee80211_auth_challenge(sdata
, mgmt
, len
);
2342 /* need another frame */
2347 WARN_ONCE(1, "invalid auth alg %d",
2348 ifmgd
->auth_data
->algorithm
);
2352 sdata_info(sdata
, "authenticated\n");
2353 ifmgd
->auth_data
->done
= true;
2354 ifmgd
->auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_WAIT_ASSOC
;
2355 ifmgd
->auth_data
->timeout_started
= true;
2356 run_again(sdata
, ifmgd
->auth_data
->timeout
);
2358 if (ifmgd
->auth_data
->algorithm
== WLAN_AUTH_SAE
&&
2359 ifmgd
->auth_data
->expected_transaction
!= 2) {
2361 * Report auth frame to user space for processing since another
2362 * round of Authentication frames is still needed.
2364 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2368 /* move station state to auth */
2369 mutex_lock(&sdata
->local
->sta_mtx
);
2370 sta
= sta_info_get(sdata
, bssid
);
2372 WARN_ONCE(1, "%s: STA %pM not found", sdata
->name
, bssid
);
2375 if (sta_info_move_state(sta
, IEEE80211_STA_AUTH
)) {
2376 sdata_info(sdata
, "failed moving %pM to auth\n", bssid
);
2379 mutex_unlock(&sdata
->local
->sta_mtx
);
2381 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2384 mutex_unlock(&sdata
->local
->sta_mtx
);
2385 /* ignore frame -- wait for timeout */
2389 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data
*sdata
,
2390 struct ieee80211_mgmt
*mgmt
, size_t len
)
2392 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2393 const u8
*bssid
= NULL
;
2396 sdata_assert_lock(sdata
);
2401 if (!ifmgd
->associated
||
2402 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2405 bssid
= ifmgd
->associated
->bssid
;
2407 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
2409 sdata_info(sdata
, "deauthenticated from %pM (Reason: %u)\n",
2410 bssid
, reason_code
);
2412 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2414 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2418 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data
*sdata
,
2419 struct ieee80211_mgmt
*mgmt
, size_t len
)
2421 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2424 sdata_assert_lock(sdata
);
2429 if (!ifmgd
->associated
||
2430 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2433 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
2435 sdata_info(sdata
, "disassociated from %pM (Reason: %u)\n",
2436 mgmt
->sa
, reason_code
);
2438 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2440 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2443 static void ieee80211_get_rates(struct ieee80211_supported_band
*sband
,
2444 u8
*supp_rates
, unsigned int supp_rates_len
,
2445 u32
*rates
, u32
*basic_rates
,
2446 bool *have_higher_than_11mbit
,
2447 int *min_rate
, int *min_rate_index
,
2448 int shift
, u32 rate_flags
)
2452 for (i
= 0; i
< supp_rates_len
; i
++) {
2453 int rate
= supp_rates
[i
] & 0x7f;
2454 bool is_basic
= !!(supp_rates
[i
] & 0x80);
2456 if ((rate
* 5 * (1 << shift
)) > 110)
2457 *have_higher_than_11mbit
= true;
2460 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2461 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2463 * Note: Even through the membership selector and the basic
2464 * rate flag share the same bit, they are not exactly
2467 if (!!(supp_rates
[i
] & 0x80) &&
2468 (supp_rates
[i
] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY
)
2471 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2472 struct ieee80211_rate
*br
;
2475 br
= &sband
->bitrates
[j
];
2476 if ((rate_flags
& br
->flags
) != rate_flags
)
2479 brate
= DIV_ROUND_UP(br
->bitrate
, (1 << shift
) * 5);
2480 if (brate
== rate
) {
2483 *basic_rates
|= BIT(j
);
2484 if ((rate
* 5) < *min_rate
) {
2485 *min_rate
= rate
* 5;
2486 *min_rate_index
= j
;
2494 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data
*sdata
,
2497 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
2499 sdata_assert_lock(sdata
);
2502 sta_info_destroy_addr(sdata
, assoc_data
->bss
->bssid
);
2504 memset(sdata
->u
.mgd
.bssid
, 0, ETH_ALEN
);
2505 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2506 sdata
->u
.mgd
.flags
= 0;
2507 ieee80211_vif_release_channel(sdata
);
2511 sdata
->u
.mgd
.assoc_data
= NULL
;
2514 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data
*sdata
,
2515 struct cfg80211_bss
*cbss
,
2516 struct ieee80211_mgmt
*mgmt
, size_t len
)
2518 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2519 struct ieee80211_local
*local
= sdata
->local
;
2520 struct ieee80211_supported_band
*sband
;
2521 struct sta_info
*sta
;
2523 u16 capab_info
, aid
;
2524 struct ieee802_11_elems elems
;
2525 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
2526 const struct cfg80211_bss_ies
*bss_ies
= NULL
;
2527 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
2532 /* AssocResp and ReassocResp have identical structure */
2534 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2535 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2537 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2538 sdata_info(sdata
, "invalid AID value 0x%x; bits 15:14 not set\n",
2540 aid
&= ~(BIT(15) | BIT(14));
2542 ifmgd
->broken_ap
= false;
2544 if (aid
== 0 || aid
> IEEE80211_MAX_AID
) {
2545 sdata_info(sdata
, "invalid AID value %d (out of range), turn off PS\n",
2548 ifmgd
->broken_ap
= true;
2551 pos
= mgmt
->u
.assoc_resp
.variable
;
2552 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2554 if (!elems
.supp_rates
) {
2555 sdata_info(sdata
, "no SuppRates element in AssocResp\n");
2562 * Some APs are erroneously not including some information in their
2563 * (re)association response frames. Try to recover by using the data
2564 * from the beacon or probe response. This seems to afflict mobile
2565 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2566 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2568 if ((assoc_data
->wmm
&& !elems
.wmm_param
) ||
2569 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2570 (!elems
.ht_cap_elem
|| !elems
.ht_operation
)) ||
2571 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2572 (!elems
.vht_cap_elem
|| !elems
.vht_operation
))) {
2573 const struct cfg80211_bss_ies
*ies
;
2574 struct ieee802_11_elems bss_elems
;
2577 ies
= rcu_dereference(cbss
->ies
);
2579 bss_ies
= kmemdup(ies
, sizeof(*ies
) + ies
->len
,
2585 ieee802_11_parse_elems(bss_ies
->data
, bss_ies
->len
,
2587 if (assoc_data
->wmm
&&
2588 !elems
.wmm_param
&& bss_elems
.wmm_param
) {
2589 elems
.wmm_param
= bss_elems
.wmm_param
;
2591 "AP bug: WMM param missing from AssocResp\n");
2595 * Also check if we requested HT/VHT, otherwise the AP doesn't
2596 * have to include the IEs in the (re)association response.
2598 if (!elems
.ht_cap_elem
&& bss_elems
.ht_cap_elem
&&
2599 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2600 elems
.ht_cap_elem
= bss_elems
.ht_cap_elem
;
2602 "AP bug: HT capability missing from AssocResp\n");
2604 if (!elems
.ht_operation
&& bss_elems
.ht_operation
&&
2605 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2606 elems
.ht_operation
= bss_elems
.ht_operation
;
2608 "AP bug: HT operation missing from AssocResp\n");
2610 if (!elems
.vht_cap_elem
&& bss_elems
.vht_cap_elem
&&
2611 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2612 elems
.vht_cap_elem
= bss_elems
.vht_cap_elem
;
2614 "AP bug: VHT capa missing from AssocResp\n");
2616 if (!elems
.vht_operation
&& bss_elems
.vht_operation
&&
2617 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2618 elems
.vht_operation
= bss_elems
.vht_operation
;
2620 "AP bug: VHT operation missing from AssocResp\n");
2625 * We previously checked these in the beacon/probe response, so
2626 * they should be present here. This is just a safety net.
2628 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2629 (!elems
.wmm_param
|| !elems
.ht_cap_elem
|| !elems
.ht_operation
)) {
2631 "HT AP is missing WMM params or HT capability/operation\n");
2636 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2637 (!elems
.vht_cap_elem
|| !elems
.vht_operation
)) {
2639 "VHT AP is missing VHT capability/operation\n");
2644 mutex_lock(&sdata
->local
->sta_mtx
);
2646 * station info was already allocated and inserted before
2647 * the association and should be available to us
2649 sta
= sta_info_get(sdata
, cbss
->bssid
);
2650 if (WARN_ON(!sta
)) {
2651 mutex_unlock(&sdata
->local
->sta_mtx
);
2656 sband
= local
->hw
.wiphy
->bands
[ieee80211_get_sdata_band(sdata
)];
2658 /* Set up internal HT/VHT capabilities */
2659 if (elems
.ht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
2660 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata
, sband
,
2661 elems
.ht_cap_elem
, sta
);
2663 if (elems
.vht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
2664 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata
, sband
,
2665 elems
.vht_cap_elem
, sta
);
2668 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2669 * in their association response, so ignore that data for our own
2670 * configuration. If it changed since the last beacon, we'll get the
2671 * next beacon and update then.
2675 * If an operating mode notification IE is present, override the
2676 * NSS calculation (that would be done in rate_control_rate_init())
2677 * and use the # of streams from that element.
2679 if (elems
.opmode_notif
&&
2680 !(*elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF
)) {
2683 nss
= *elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_MASK
;
2684 nss
>>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT
;
2686 sta
->sta
.rx_nss
= nss
;
2689 rate_control_rate_init(sta
);
2691 if (ifmgd
->flags
& IEEE80211_STA_MFP_ENABLED
)
2692 set_sta_flag(sta
, WLAN_STA_MFP
);
2694 if (elems
.wmm_param
)
2695 set_sta_flag(sta
, WLAN_STA_WME
);
2697 err
= sta_info_move_state(sta
, IEEE80211_STA_ASSOC
);
2698 if (!err
&& !(ifmgd
->flags
& IEEE80211_STA_CONTROL_PORT
))
2699 err
= sta_info_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
2702 "failed to move station %pM to desired state\n",
2704 WARN_ON(__sta_info_destroy(sta
));
2705 mutex_unlock(&sdata
->local
->sta_mtx
);
2710 mutex_unlock(&sdata
->local
->sta_mtx
);
2713 * Always handle WMM once after association regardless
2714 * of the first value the AP uses. Setting -1 here has
2715 * that effect because the AP values is an unsigned
2718 ifmgd
->wmm_last_param_set
= -1;
2720 if (elems
.wmm_param
)
2721 ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
2722 elems
.wmm_param_len
);
2724 ieee80211_set_wmm_default(sdata
, false);
2725 changed
|= BSS_CHANGED_QOS
;
2727 /* set AID and assoc capability,
2728 * ieee80211_set_associated() will tell the driver */
2729 bss_conf
->aid
= aid
;
2730 bss_conf
->assoc_capability
= capab_info
;
2731 ieee80211_set_associated(sdata
, cbss
, changed
);
2734 * If we're using 4-addr mode, let the AP know that we're
2735 * doing so, so that it can create the STA VLAN on its side
2737 if (ifmgd
->use_4addr
)
2738 ieee80211_send_4addr_nullfunc(local
, sdata
);
2741 * Start timer to probe the connection to the AP now.
2742 * Also start the timer that will detect beacon loss.
2744 ieee80211_sta_rx_notify(sdata
, (struct ieee80211_hdr
*)mgmt
);
2745 ieee80211_sta_reset_beacon_monitor(sdata
);
2753 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
2754 struct ieee80211_mgmt
*mgmt
,
2757 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2758 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
2759 u16 capab_info
, status_code
, aid
;
2760 struct ieee802_11_elems elems
;
2763 struct cfg80211_bss
*bss
;
2765 sdata_assert_lock(sdata
);
2769 if (!ether_addr_equal(assoc_data
->bss
->bssid
, mgmt
->bssid
))
2773 * AssocResp and ReassocResp have identical structure, so process both
2774 * of them in this function.
2780 reassoc
= ieee80211_is_reassoc_req(mgmt
->frame_control
);
2781 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2782 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
2783 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2786 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2787 reassoc
? "Rea" : "A", mgmt
->sa
,
2788 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
2790 pos
= mgmt
->u
.assoc_resp
.variable
;
2791 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2793 if (status_code
== WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY
&&
2794 elems
.timeout_int
&&
2795 elems
.timeout_int
->type
== WLAN_TIMEOUT_ASSOC_COMEBACK
) {
2797 tu
= le32_to_cpu(elems
.timeout_int
->value
);
2798 ms
= tu
* 1024 / 1000;
2800 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2802 assoc_data
->timeout
= jiffies
+ msecs_to_jiffies(ms
);
2803 assoc_data
->timeout_started
= true;
2804 if (ms
> IEEE80211_ASSOC_TIMEOUT
)
2805 run_again(sdata
, assoc_data
->timeout
);
2809 bss
= assoc_data
->bss
;
2811 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2812 sdata_info(sdata
, "%pM denied association (code=%d)\n",
2813 mgmt
->sa
, status_code
);
2814 ieee80211_destroy_assoc_data(sdata
, false);
2816 if (!ieee80211_assoc_success(sdata
, bss
, mgmt
, len
)) {
2817 /* oops -- internal error -- send timeout for now */
2818 ieee80211_destroy_assoc_data(sdata
, false);
2819 cfg80211_assoc_timeout(sdata
->dev
, bss
);
2822 sdata_info(sdata
, "associated\n");
2825 * destroy assoc_data afterwards, as otherwise an idle
2826 * recalc after assoc_data is NULL but before associated
2827 * is set can cause the interface to go idle
2829 ieee80211_destroy_assoc_data(sdata
, true);
2832 cfg80211_rx_assoc_resp(sdata
->dev
, bss
, (u8
*)mgmt
, len
);
2835 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data
*sdata
,
2836 struct ieee80211_mgmt
*mgmt
, size_t len
,
2837 struct ieee80211_rx_status
*rx_status
,
2838 struct ieee802_11_elems
*elems
)
2840 struct ieee80211_local
*local
= sdata
->local
;
2842 struct ieee80211_bss
*bss
;
2843 struct ieee80211_channel
*channel
;
2845 sdata_assert_lock(sdata
);
2847 if (elems
->ds_params
)
2848 freq
= ieee80211_channel_to_frequency(elems
->ds_params
[0],
2851 freq
= rx_status
->freq
;
2853 channel
= ieee80211_get_channel(local
->hw
.wiphy
, freq
);
2855 if (!channel
|| channel
->flags
& IEEE80211_CHAN_DISABLED
)
2858 bss
= ieee80211_bss_info_update(local
, rx_status
, mgmt
, len
, elems
,
2861 ieee80211_rx_bss_put(local
, bss
);
2862 sdata
->vif
.bss_conf
.beacon_rate
= bss
->beacon_rate
;
2867 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data
*sdata
,
2868 struct sk_buff
*skb
)
2870 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
2871 struct ieee80211_if_managed
*ifmgd
;
2872 struct ieee80211_rx_status
*rx_status
= (void *) skb
->cb
;
2873 size_t baselen
, len
= skb
->len
;
2874 struct ieee802_11_elems elems
;
2876 ifmgd
= &sdata
->u
.mgd
;
2878 sdata_assert_lock(sdata
);
2880 if (!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
2881 return; /* ignore ProbeResp to foreign address */
2883 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
2887 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
2890 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
2892 if (ifmgd
->associated
&&
2893 ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2894 ieee80211_reset_ap_probe(sdata
);
2896 if (ifmgd
->auth_data
&& !ifmgd
->auth_data
->bss
->proberesp_ies
&&
2897 ether_addr_equal(mgmt
->bssid
, ifmgd
->auth_data
->bss
->bssid
)) {
2898 /* got probe response, continue with auth */
2899 sdata_info(sdata
, "direct probe responded\n");
2900 ifmgd
->auth_data
->tries
= 0;
2901 ifmgd
->auth_data
->timeout
= jiffies
;
2902 ifmgd
->auth_data
->timeout_started
= true;
2903 run_again(sdata
, ifmgd
->auth_data
->timeout
);
2908 * This is the canonical list of information elements we care about,
2909 * the filter code also gives us all changes to the Microsoft OUI
2910 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2912 * We implement beacon filtering in software since that means we can
2913 * avoid processing the frame here and in cfg80211, and userspace
2914 * will not be able to tell whether the hardware supports it or not.
2916 * XXX: This list needs to be dynamic -- userspace needs to be able to
2917 * add items it requires. It also needs to be able to tell us to
2918 * look out for other vendor IEs.
2920 static const u64 care_about_ies
=
2921 (1ULL << WLAN_EID_COUNTRY
) |
2922 (1ULL << WLAN_EID_ERP_INFO
) |
2923 (1ULL << WLAN_EID_CHANNEL_SWITCH
) |
2924 (1ULL << WLAN_EID_PWR_CONSTRAINT
) |
2925 (1ULL << WLAN_EID_HT_CAPABILITY
) |
2926 (1ULL << WLAN_EID_HT_OPERATION
);
2928 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data
*sdata
,
2929 struct ieee80211_mgmt
*mgmt
, size_t len
,
2930 struct ieee80211_rx_status
*rx_status
)
2932 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2933 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
2935 struct ieee802_11_elems elems
;
2936 struct ieee80211_local
*local
= sdata
->local
;
2937 struct ieee80211_chanctx_conf
*chanctx_conf
;
2938 struct ieee80211_channel
*chan
;
2939 struct sta_info
*sta
;
2945 u8 deauth_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
2947 sdata_assert_lock(sdata
);
2949 /* Process beacon from the current BSS */
2950 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
2955 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
2956 if (!chanctx_conf
) {
2961 if (rx_status
->freq
!= chanctx_conf
->def
.chan
->center_freq
) {
2965 chan
= chanctx_conf
->def
.chan
;
2968 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->need_beacon
&&
2969 ether_addr_equal(mgmt
->bssid
, ifmgd
->assoc_data
->bss
->bssid
)) {
2970 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
,
2971 len
- baselen
, false, &elems
);
2973 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
2974 if (elems
.tim
&& !elems
.parse_error
) {
2975 const struct ieee80211_tim_ie
*tim_ie
= elems
.tim
;
2976 ifmgd
->dtim_period
= tim_ie
->dtim_period
;
2978 ifmgd
->have_beacon
= true;
2979 ifmgd
->assoc_data
->need_beacon
= false;
2980 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
2981 sdata
->vif
.bss_conf
.sync_tsf
=
2982 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
2983 sdata
->vif
.bss_conf
.sync_device_ts
=
2984 rx_status
->device_timestamp
;
2986 sdata
->vif
.bss_conf
.sync_dtim_count
=
2987 elems
.tim
->dtim_count
;
2989 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
2991 /* continue assoc process */
2992 ifmgd
->assoc_data
->timeout
= jiffies
;
2993 ifmgd
->assoc_data
->timeout_started
= true;
2994 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
2998 if (!ifmgd
->associated
||
2999 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
3001 bssid
= ifmgd
->associated
->bssid
;
3003 /* Track average RSSI from the Beacon frames of the current AP */
3004 ifmgd
->last_beacon_signal
= rx_status
->signal
;
3005 if (ifmgd
->flags
& IEEE80211_STA_RESET_SIGNAL_AVE
) {
3006 ifmgd
->flags
&= ~IEEE80211_STA_RESET_SIGNAL_AVE
;
3007 ifmgd
->ave_beacon_signal
= rx_status
->signal
* 16;
3008 ifmgd
->last_cqm_event_signal
= 0;
3009 ifmgd
->count_beacon_signal
= 1;
3010 ifmgd
->last_ave_beacon_signal
= 0;
3012 ifmgd
->ave_beacon_signal
=
3013 (IEEE80211_SIGNAL_AVE_WEIGHT
* rx_status
->signal
* 16 +
3014 (16 - IEEE80211_SIGNAL_AVE_WEIGHT
) *
3015 ifmgd
->ave_beacon_signal
) / 16;
3016 ifmgd
->count_beacon_signal
++;
3019 if (ifmgd
->rssi_min_thold
!= ifmgd
->rssi_max_thold
&&
3020 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
) {
3021 int sig
= ifmgd
->ave_beacon_signal
;
3022 int last_sig
= ifmgd
->last_ave_beacon_signal
;
3025 * if signal crosses either of the boundaries, invoke callback
3026 * with appropriate parameters
3028 if (sig
> ifmgd
->rssi_max_thold
&&
3029 (last_sig
<= ifmgd
->rssi_min_thold
|| last_sig
== 0)) {
3030 ifmgd
->last_ave_beacon_signal
= sig
;
3031 drv_rssi_callback(local
, sdata
, RSSI_EVENT_HIGH
);
3032 } else if (sig
< ifmgd
->rssi_min_thold
&&
3033 (last_sig
>= ifmgd
->rssi_max_thold
||
3035 ifmgd
->last_ave_beacon_signal
= sig
;
3036 drv_rssi_callback(local
, sdata
, RSSI_EVENT_LOW
);
3040 if (bss_conf
->cqm_rssi_thold
&&
3041 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
&&
3042 !(sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
)) {
3043 int sig
= ifmgd
->ave_beacon_signal
/ 16;
3044 int last_event
= ifmgd
->last_cqm_event_signal
;
3045 int thold
= bss_conf
->cqm_rssi_thold
;
3046 int hyst
= bss_conf
->cqm_rssi_hyst
;
3048 (last_event
== 0 || sig
< last_event
- hyst
)) {
3049 ifmgd
->last_cqm_event_signal
= sig
;
3050 ieee80211_cqm_rssi_notify(
3052 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
3054 } else if (sig
> thold
&&
3055 (last_event
== 0 || sig
> last_event
+ hyst
)) {
3056 ifmgd
->last_cqm_event_signal
= sig
;
3057 ieee80211_cqm_rssi_notify(
3059 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
3064 if (ifmgd
->flags
& IEEE80211_STA_BEACON_POLL
) {
3065 mlme_dbg_ratelimited(sdata
,
3066 "cancelling AP probe due to a received beacon\n");
3067 mutex_lock(&local
->mtx
);
3068 ifmgd
->flags
&= ~IEEE80211_STA_BEACON_POLL
;
3069 ieee80211_run_deferred_scan(local
);
3070 mutex_unlock(&local
->mtx
);
3072 mutex_lock(&local
->iflist_mtx
);
3073 ieee80211_recalc_ps(local
, -1);
3074 mutex_unlock(&local
->iflist_mtx
);
3078 * Push the beacon loss detection into the future since
3079 * we are processing a beacon from the AP just now.
3081 ieee80211_sta_reset_beacon_monitor(sdata
);
3083 ncrc
= crc32_be(0, (void *)&mgmt
->u
.beacon
.beacon_int
, 4);
3084 ncrc
= ieee802_11_parse_elems_crc(mgmt
->u
.beacon
.variable
,
3085 len
- baselen
, false, &elems
,
3086 care_about_ies
, ncrc
);
3088 if (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) {
3089 bool directed_tim
= ieee80211_check_tim(elems
.tim
,
3093 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
3094 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
3095 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
3096 ieee80211_hw_config(local
,
3097 IEEE80211_CONF_CHANGE_PS
);
3099 ieee80211_send_nullfunc(local
, sdata
, 0);
3100 } else if (!local
->pspolling
&& sdata
->u
.mgd
.powersave
) {
3101 local
->pspolling
= true;
3104 * Here is assumed that the driver will be
3105 * able to send ps-poll frame and receive a
3106 * response even though power save mode is
3107 * enabled, but some drivers might require
3108 * to disable power save here. This needs
3109 * to be investigated.
3111 ieee80211_send_pspoll(local
, sdata
);
3116 if (sdata
->vif
.p2p
) {
3117 struct ieee80211_p2p_noa_attr noa
= {};
3120 ret
= cfg80211_get_p2p_attr(mgmt
->u
.beacon
.variable
,
3122 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
3123 (u8
*) &noa
, sizeof(noa
));
3125 if (sdata
->u
.mgd
.p2p_noa_index
!= noa
.index
) {
3126 /* valid noa_attr and index changed */
3127 sdata
->u
.mgd
.p2p_noa_index
= noa
.index
;
3128 memcpy(&bss_conf
->p2p_noa_attr
, &noa
, sizeof(noa
));
3129 changed
|= BSS_CHANGED_P2P_PS
;
3131 * make sure we update all information, the CRC
3132 * mechanism doesn't look at P2P attributes.
3134 ifmgd
->beacon_crc_valid
= false;
3136 } else if (sdata
->u
.mgd
.p2p_noa_index
!= -1) {
3137 /* noa_attr not found and we had valid noa_attr before */
3138 sdata
->u
.mgd
.p2p_noa_index
= -1;
3139 memset(&bss_conf
->p2p_noa_attr
, 0, sizeof(bss_conf
->p2p_noa_attr
));
3140 changed
|= BSS_CHANGED_P2P_PS
;
3141 ifmgd
->beacon_crc_valid
= false;
3145 if (ncrc
== ifmgd
->beacon_crc
&& ifmgd
->beacon_crc_valid
)
3147 ifmgd
->beacon_crc
= ncrc
;
3148 ifmgd
->beacon_crc_valid
= true;
3150 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3152 ieee80211_sta_process_chanswitch(sdata
, rx_status
->mactime
,
3155 if (ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
3156 elems
.wmm_param_len
))
3157 changed
|= BSS_CHANGED_QOS
;
3160 * If we haven't had a beacon before, tell the driver about the
3161 * DTIM period (and beacon timing if desired) now.
3163 if (!ifmgd
->have_beacon
) {
3164 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3166 bss_conf
->dtim_period
= elems
.tim
->dtim_period
?: 1;
3168 bss_conf
->dtim_period
= 1;
3170 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
3171 sdata
->vif
.bss_conf
.sync_tsf
=
3172 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3173 sdata
->vif
.bss_conf
.sync_device_ts
=
3174 rx_status
->device_timestamp
;
3176 sdata
->vif
.bss_conf
.sync_dtim_count
=
3177 elems
.tim
->dtim_count
;
3179 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3182 changed
|= BSS_CHANGED_BEACON_INFO
;
3183 ifmgd
->have_beacon
= true;
3185 mutex_lock(&local
->iflist_mtx
);
3186 ieee80211_recalc_ps(local
, -1);
3187 mutex_unlock(&local
->iflist_mtx
);
3189 ieee80211_recalc_ps_vif(sdata
);
3192 if (elems
.erp_info
) {
3194 erp_value
= elems
.erp_info
[0];
3198 changed
|= ieee80211_handle_bss_capability(sdata
,
3199 le16_to_cpu(mgmt
->u
.beacon
.capab_info
),
3200 erp_valid
, erp_value
);
3202 mutex_lock(&local
->sta_mtx
);
3203 sta
= sta_info_get(sdata
, bssid
);
3205 if (ieee80211_config_bw(sdata
, sta
, elems
.ht_operation
,
3206 elems
.vht_operation
, bssid
, &changed
)) {
3207 mutex_unlock(&local
->sta_mtx
);
3208 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
3209 WLAN_REASON_DEAUTH_LEAVING
,
3211 cfg80211_tx_mlme_mgmt(sdata
->dev
, deauth_buf
,
3212 sizeof(deauth_buf
));
3216 if (sta
&& elems
.opmode_notif
)
3217 ieee80211_vht_handle_opmode(sdata
, sta
, *elems
.opmode_notif
,
3218 rx_status
->band
, true);
3219 mutex_unlock(&local
->sta_mtx
);
3221 if (elems
.country_elem
&& elems
.pwr_constr_elem
&&
3222 mgmt
->u
.probe_resp
.capab_info
&
3223 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT
))
3224 changed
|= ieee80211_handle_pwr_constr(sdata
, chan
,
3226 elems
.country_elem_len
,
3227 elems
.pwr_constr_elem
);
3229 ieee80211_bss_info_change_notify(sdata
, changed
);
3232 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
3233 struct sk_buff
*skb
)
3235 struct ieee80211_rx_status
*rx_status
;
3236 struct ieee80211_mgmt
*mgmt
;
3238 struct ieee802_11_elems elems
;
3241 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3242 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3243 fc
= le16_to_cpu(mgmt
->frame_control
);
3247 switch (fc
& IEEE80211_FCTL_STYPE
) {
3248 case IEEE80211_STYPE_BEACON
:
3249 ieee80211_rx_mgmt_beacon(sdata
, mgmt
, skb
->len
, rx_status
);
3251 case IEEE80211_STYPE_PROBE_RESP
:
3252 ieee80211_rx_mgmt_probe_resp(sdata
, skb
);
3254 case IEEE80211_STYPE_AUTH
:
3255 ieee80211_rx_mgmt_auth(sdata
, mgmt
, skb
->len
);
3257 case IEEE80211_STYPE_DEAUTH
:
3258 ieee80211_rx_mgmt_deauth(sdata
, mgmt
, skb
->len
);
3260 case IEEE80211_STYPE_DISASSOC
:
3261 ieee80211_rx_mgmt_disassoc(sdata
, mgmt
, skb
->len
);
3263 case IEEE80211_STYPE_ASSOC_RESP
:
3264 case IEEE80211_STYPE_REASSOC_RESP
:
3265 ieee80211_rx_mgmt_assoc_resp(sdata
, mgmt
, skb
->len
);
3267 case IEEE80211_STYPE_ACTION
:
3268 if (mgmt
->u
.action
.category
== WLAN_CATEGORY_SPECTRUM_MGMT
) {
3269 ies_len
= skb
->len
-
3270 offsetof(struct ieee80211_mgmt
,
3271 u
.action
.u
.chan_switch
.variable
);
3276 ieee802_11_parse_elems(
3277 mgmt
->u
.action
.u
.chan_switch
.variable
,
3278 ies_len
, true, &elems
);
3280 if (elems
.parse_error
)
3283 ieee80211_sta_process_chanswitch(sdata
,
3286 } else if (mgmt
->u
.action
.category
== WLAN_CATEGORY_PUBLIC
) {
3287 ies_len
= skb
->len
-
3288 offsetof(struct ieee80211_mgmt
,
3289 u
.action
.u
.ext_chan_switch
.variable
);
3294 ieee802_11_parse_elems(
3295 mgmt
->u
.action
.u
.ext_chan_switch
.variable
,
3296 ies_len
, true, &elems
);
3298 if (elems
.parse_error
)
3301 /* for the handling code pretend this was also an IE */
3302 elems
.ext_chansw_ie
=
3303 &mgmt
->u
.action
.u
.ext_chan_switch
.data
;
3305 ieee80211_sta_process_chanswitch(sdata
,
3311 sdata_unlock(sdata
);
3314 static void ieee80211_sta_timer(unsigned long data
)
3316 struct ieee80211_sub_if_data
*sdata
=
3317 (struct ieee80211_sub_if_data
*) data
;
3319 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
3322 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data
*sdata
,
3323 u8
*bssid
, u8 reason
, bool tx
)
3325 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3327 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
, reason
,
3330 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
3331 IEEE80211_DEAUTH_FRAME_LEN
);
3334 static int ieee80211_probe_auth(struct ieee80211_sub_if_data
*sdata
)
3336 struct ieee80211_local
*local
= sdata
->local
;
3337 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3338 struct ieee80211_mgd_auth_data
*auth_data
= ifmgd
->auth_data
;
3341 sdata_assert_lock(sdata
);
3343 if (WARN_ON_ONCE(!auth_data
))
3348 if (auth_data
->tries
> IEEE80211_AUTH_MAX_TRIES
) {
3349 sdata_info(sdata
, "authentication with %pM timed out\n",
3350 auth_data
->bss
->bssid
);
3353 * Most likely AP is not in the range so remove the
3354 * bss struct for that AP.
3356 cfg80211_unlink_bss(local
->hw
.wiphy
, auth_data
->bss
);
3361 drv_mgd_prepare_tx(local
, sdata
);
3363 if (auth_data
->bss
->proberesp_ies
) {
3367 sdata_info(sdata
, "send auth to %pM (try %d/%d)\n",
3368 auth_data
->bss
->bssid
, auth_data
->tries
,
3369 IEEE80211_AUTH_MAX_TRIES
);
3371 auth_data
->expected_transaction
= 2;
3373 if (auth_data
->algorithm
== WLAN_AUTH_SAE
) {
3374 trans
= auth_data
->sae_trans
;
3375 status
= auth_data
->sae_status
;
3376 auth_data
->expected_transaction
= trans
;
3379 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
3380 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
3381 IEEE80211_TX_INTFL_MLME_CONN_TX
;
3383 ieee80211_send_auth(sdata
, trans
, auth_data
->algorithm
, status
,
3384 auth_data
->data
, auth_data
->data_len
,
3385 auth_data
->bss
->bssid
,
3386 auth_data
->bss
->bssid
, NULL
, 0, 0,
3391 sdata_info(sdata
, "direct probe to %pM (try %d/%i)\n",
3392 auth_data
->bss
->bssid
, auth_data
->tries
,
3393 IEEE80211_AUTH_MAX_TRIES
);
3396 ssidie
= ieee80211_bss_get_ie(auth_data
->bss
, WLAN_EID_SSID
);
3402 * Direct probe is sent to broadcast address as some APs
3403 * will not answer to direct packet in unassociated state.
3405 ieee80211_send_probe_req(sdata
, NULL
, ssidie
+ 2, ssidie
[1],
3406 NULL
, 0, (u32
) -1, true, 0,
3407 auth_data
->bss
->channel
, false);
3411 if (tx_flags
== 0) {
3412 auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_TIMEOUT
;
3413 auth_data
->timeout_started
= true;
3414 run_again(sdata
, auth_data
->timeout
);
3416 auth_data
->timeout
=
3417 round_jiffies_up(jiffies
+ IEEE80211_AUTH_TIMEOUT_LONG
);
3418 auth_data
->timeout_started
= true;
3419 run_again(sdata
, auth_data
->timeout
);
3425 static int ieee80211_do_assoc(struct ieee80211_sub_if_data
*sdata
)
3427 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
3428 struct ieee80211_local
*local
= sdata
->local
;
3430 sdata_assert_lock(sdata
);
3432 assoc_data
->tries
++;
3433 if (assoc_data
->tries
> IEEE80211_ASSOC_MAX_TRIES
) {
3434 sdata_info(sdata
, "association with %pM timed out\n",
3435 assoc_data
->bss
->bssid
);
3438 * Most likely AP is not in the range so remove the
3439 * bss struct for that AP.
3441 cfg80211_unlink_bss(local
->hw
.wiphy
, assoc_data
->bss
);
3446 sdata_info(sdata
, "associate with %pM (try %d/%d)\n",
3447 assoc_data
->bss
->bssid
, assoc_data
->tries
,
3448 IEEE80211_ASSOC_MAX_TRIES
);
3449 ieee80211_send_assoc(sdata
);
3451 if (!(local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)) {
3452 assoc_data
->timeout
= jiffies
+ IEEE80211_ASSOC_TIMEOUT
;
3453 assoc_data
->timeout_started
= true;
3454 run_again(sdata
, assoc_data
->timeout
);
3456 assoc_data
->timeout
=
3457 round_jiffies_up(jiffies
+
3458 IEEE80211_ASSOC_TIMEOUT_LONG
);
3459 assoc_data
->timeout_started
= true;
3460 run_again(sdata
, assoc_data
->timeout
);
3466 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data
*sdata
,
3467 __le16 fc
, bool acked
)
3469 struct ieee80211_local
*local
= sdata
->local
;
3471 sdata
->u
.mgd
.status_fc
= fc
;
3472 sdata
->u
.mgd
.status_acked
= acked
;
3473 sdata
->u
.mgd
.status_received
= true;
3475 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
3478 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
)
3480 struct ieee80211_local
*local
= sdata
->local
;
3481 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3485 if (ifmgd
->status_received
) {
3486 __le16 fc
= ifmgd
->status_fc
;
3487 bool status_acked
= ifmgd
->status_acked
;
3489 ifmgd
->status_received
= false;
3490 if (ifmgd
->auth_data
&&
3491 (ieee80211_is_probe_req(fc
) || ieee80211_is_auth(fc
))) {
3493 ifmgd
->auth_data
->timeout
=
3494 jiffies
+ IEEE80211_AUTH_TIMEOUT_SHORT
;
3495 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3497 ifmgd
->auth_data
->timeout
= jiffies
- 1;
3499 ifmgd
->auth_data
->timeout_started
= true;
3500 } else if (ifmgd
->assoc_data
&&
3501 (ieee80211_is_assoc_req(fc
) ||
3502 ieee80211_is_reassoc_req(fc
))) {
3504 ifmgd
->assoc_data
->timeout
=
3505 jiffies
+ IEEE80211_ASSOC_TIMEOUT_SHORT
;
3506 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3508 ifmgd
->assoc_data
->timeout
= jiffies
- 1;
3510 ifmgd
->assoc_data
->timeout_started
= true;
3514 if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
&&
3515 time_after(jiffies
, ifmgd
->auth_data
->timeout
)) {
3516 if (ifmgd
->auth_data
->done
) {
3518 * ok ... we waited for assoc but userspace didn't,
3519 * so let's just kill the auth data
3521 ieee80211_destroy_auth_data(sdata
, false);
3522 } else if (ieee80211_probe_auth(sdata
)) {
3525 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
3527 ieee80211_destroy_auth_data(sdata
, false);
3529 cfg80211_auth_timeout(sdata
->dev
, bssid
);
3531 } else if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
)
3532 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3534 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
&&
3535 time_after(jiffies
, ifmgd
->assoc_data
->timeout
)) {
3536 if ((ifmgd
->assoc_data
->need_beacon
&& !ifmgd
->have_beacon
) ||
3537 ieee80211_do_assoc(sdata
)) {
3538 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
3540 ieee80211_destroy_assoc_data(sdata
, false);
3541 cfg80211_assoc_timeout(sdata
->dev
, bss
);
3543 } else if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
)
3544 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3546 if (ifmgd
->flags
& (IEEE80211_STA_BEACON_POLL
|
3547 IEEE80211_STA_CONNECTION_POLL
) &&
3548 ifmgd
->associated
) {
3552 memcpy(bssid
, ifmgd
->associated
->bssid
, ETH_ALEN
);
3554 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
3555 max_tries
= max_nullfunc_tries
;
3557 max_tries
= max_probe_tries
;
3559 /* ACK received for nullfunc probing frame */
3560 if (!ifmgd
->probe_send_count
)
3561 ieee80211_reset_ap_probe(sdata
);
3562 else if (ifmgd
->nullfunc_failed
) {
3563 if (ifmgd
->probe_send_count
< max_tries
) {
3565 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3566 bssid
, ifmgd
->probe_send_count
,
3568 ieee80211_mgd_probe_ap_send(sdata
);
3571 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3573 ieee80211_sta_connection_lost(sdata
, bssid
,
3574 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
3577 } else if (time_is_after_jiffies(ifmgd
->probe_timeout
))
3578 run_again(sdata
, ifmgd
->probe_timeout
);
3579 else if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) {
3581 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3582 bssid
, probe_wait_ms
);
3583 ieee80211_sta_connection_lost(sdata
, bssid
,
3584 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
3585 } else if (ifmgd
->probe_send_count
< max_tries
) {
3587 "No probe response from AP %pM after %dms, try %d/%i\n",
3588 bssid
, probe_wait_ms
,
3589 ifmgd
->probe_send_count
, max_tries
);
3590 ieee80211_mgd_probe_ap_send(sdata
);
3593 * We actually lost the connection ... or did we?
3596 wiphy_debug(local
->hw
.wiphy
,
3597 "%s: No probe response from AP %pM"
3598 " after %dms, disconnecting.\n",
3600 bssid
, probe_wait_ms
);
3602 ieee80211_sta_connection_lost(sdata
, bssid
,
3603 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
3607 sdata_unlock(sdata
);
3610 static void ieee80211_sta_bcn_mon_timer(unsigned long data
)
3612 struct ieee80211_sub_if_data
*sdata
=
3613 (struct ieee80211_sub_if_data
*) data
;
3614 struct ieee80211_local
*local
= sdata
->local
;
3616 if (local
->quiescing
)
3619 sdata
->u
.mgd
.connection_loss
= false;
3620 ieee80211_queue_work(&sdata
->local
->hw
,
3621 &sdata
->u
.mgd
.beacon_connection_loss_work
);
3624 static void ieee80211_sta_conn_mon_timer(unsigned long data
)
3626 struct ieee80211_sub_if_data
*sdata
=
3627 (struct ieee80211_sub_if_data
*) data
;
3628 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3629 struct ieee80211_local
*local
= sdata
->local
;
3631 if (local
->quiescing
)
3634 ieee80211_queue_work(&local
->hw
, &ifmgd
->monitor_work
);
3637 static void ieee80211_sta_monitor_work(struct work_struct
*work
)
3639 struct ieee80211_sub_if_data
*sdata
=
3640 container_of(work
, struct ieee80211_sub_if_data
,
3641 u
.mgd
.monitor_work
);
3643 ieee80211_mgd_probe_ap(sdata
, false);
3646 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3650 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
3651 __ieee80211_stop_poll(sdata
);
3653 /* let's probe the connection once */
3654 flags
= sdata
->local
->hw
.flags
;
3655 if (!(flags
& IEEE80211_HW_CONNECTION_MONITOR
))
3656 ieee80211_queue_work(&sdata
->local
->hw
,
3657 &sdata
->u
.mgd
.monitor_work
);
3658 /* and do all the other regular work too */
3659 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
3664 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
)
3666 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3669 if (!ifmgd
->associated
) {
3670 sdata_unlock(sdata
);
3674 if (sdata
->flags
& IEEE80211_SDATA_DISCONNECT_RESUME
) {
3675 sdata
->flags
&= ~IEEE80211_SDATA_DISCONNECT_RESUME
;
3676 mlme_dbg(sdata
, "driver requested disconnect after resume\n");
3677 ieee80211_sta_connection_lost(sdata
,
3678 ifmgd
->associated
->bssid
,
3679 WLAN_REASON_UNSPECIFIED
,
3681 sdata_unlock(sdata
);
3684 sdata_unlock(sdata
);
3688 /* interface setup */
3689 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
)
3691 struct ieee80211_if_managed
*ifmgd
;
3693 ifmgd
= &sdata
->u
.mgd
;
3694 INIT_WORK(&ifmgd
->monitor_work
, ieee80211_sta_monitor_work
);
3695 INIT_WORK(&ifmgd
->chswitch_work
, ieee80211_chswitch_work
);
3696 INIT_WORK(&ifmgd
->beacon_connection_loss_work
,
3697 ieee80211_beacon_connection_loss_work
);
3698 INIT_WORK(&ifmgd
->csa_connection_drop_work
,
3699 ieee80211_csa_connection_drop_work
);
3700 INIT_WORK(&ifmgd
->request_smps_work
, ieee80211_request_smps_work
);
3701 setup_timer(&ifmgd
->timer
, ieee80211_sta_timer
,
3702 (unsigned long) sdata
);
3703 setup_timer(&ifmgd
->bcn_mon_timer
, ieee80211_sta_bcn_mon_timer
,
3704 (unsigned long) sdata
);
3705 setup_timer(&ifmgd
->conn_mon_timer
, ieee80211_sta_conn_mon_timer
,
3706 (unsigned long) sdata
);
3707 setup_timer(&ifmgd
->chswitch_timer
, ieee80211_chswitch_timer
,
3708 (unsigned long) sdata
);
3711 ifmgd
->powersave
= sdata
->wdev
.ps
;
3712 ifmgd
->uapsd_queues
= sdata
->local
->hw
.uapsd_queues
;
3713 ifmgd
->uapsd_max_sp_len
= sdata
->local
->hw
.uapsd_max_sp_len
;
3714 ifmgd
->p2p_noa_index
= -1;
3716 if (sdata
->local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
)
3717 ifmgd
->req_smps
= IEEE80211_SMPS_AUTOMATIC
;
3719 ifmgd
->req_smps
= IEEE80211_SMPS_OFF
;
3722 /* scan finished notification */
3723 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
)
3725 struct ieee80211_sub_if_data
*sdata
;
3727 /* Restart STA timers */
3729 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3730 if (ieee80211_sdata_running(sdata
))
3731 ieee80211_restart_sta_timer(sdata
);
3736 int ieee80211_max_network_latency(struct notifier_block
*nb
,
3737 unsigned long data
, void *dummy
)
3739 s32 latency_usec
= (s32
) data
;
3740 struct ieee80211_local
*local
=
3741 container_of(nb
, struct ieee80211_local
,
3742 network_latency_notifier
);
3744 mutex_lock(&local
->iflist_mtx
);
3745 ieee80211_recalc_ps(local
, latency_usec
);
3746 mutex_unlock(&local
->iflist_mtx
);
3751 static u8
ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data
*sdata
,
3752 struct cfg80211_bss
*cbss
)
3754 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3755 const u8
*ht_cap_ie
, *vht_cap_ie
;
3756 const struct ieee80211_ht_cap
*ht_cap
;
3757 const struct ieee80211_vht_cap
*vht_cap
;
3760 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)
3763 ht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
3764 if (ht_cap_ie
&& ht_cap_ie
[1] >= sizeof(*ht_cap
)) {
3765 ht_cap
= (void *)(ht_cap_ie
+ 2);
3766 chains
= ieee80211_mcs_to_chains(&ht_cap
->mcs
);
3768 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3769 * "Tx Unequal Modulation Supported" fields.
3773 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
3776 vht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
3777 if (vht_cap_ie
&& vht_cap_ie
[1] >= sizeof(*vht_cap
)) {
3781 vht_cap
= (void *)(vht_cap_ie
+ 2);
3782 tx_mcs_map
= le16_to_cpu(vht_cap
->supp_mcs
.tx_mcs_map
);
3783 for (nss
= 8; nss
> 0; nss
--) {
3784 if (((tx_mcs_map
>> (2 * (nss
- 1))) & 3) !=
3785 IEEE80211_VHT_MCS_NOT_SUPPORTED
)
3788 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3789 chains
= max(chains
, nss
);
3795 static int ieee80211_prep_channel(struct ieee80211_sub_if_data
*sdata
,
3796 struct cfg80211_bss
*cbss
)
3798 struct ieee80211_local
*local
= sdata
->local
;
3799 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3800 const struct ieee80211_ht_operation
*ht_oper
= NULL
;
3801 const struct ieee80211_vht_operation
*vht_oper
= NULL
;
3802 struct ieee80211_supported_band
*sband
;
3803 struct cfg80211_chan_def chandef
;
3806 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
3808 ifmgd
->flags
&= ~(IEEE80211_STA_DISABLE_40MHZ
|
3809 IEEE80211_STA_DISABLE_80P80MHZ
|
3810 IEEE80211_STA_DISABLE_160MHZ
);
3814 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
3815 sband
->ht_cap
.ht_supported
) {
3816 const u8
*ht_oper_ie
, *ht_cap
;
3818 ht_oper_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_OPERATION
);
3819 if (ht_oper_ie
&& ht_oper_ie
[1] >= sizeof(*ht_oper
))
3820 ht_oper
= (void *)(ht_oper_ie
+ 2);
3822 ht_cap
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
3823 if (!ht_cap
|| ht_cap
[1] < sizeof(struct ieee80211_ht_cap
)) {
3824 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
3829 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
3830 sband
->vht_cap
.vht_supported
) {
3831 const u8
*vht_oper_ie
, *vht_cap
;
3833 vht_oper_ie
= ieee80211_bss_get_ie(cbss
,
3834 WLAN_EID_VHT_OPERATION
);
3835 if (vht_oper_ie
&& vht_oper_ie
[1] >= sizeof(*vht_oper
))
3836 vht_oper
= (void *)(vht_oper_ie
+ 2);
3837 if (vht_oper
&& !ht_oper
) {
3840 "AP advertised VHT without HT, disabling both\n");
3841 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
3842 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
3845 vht_cap
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
3846 if (!vht_cap
|| vht_cap
[1] < sizeof(struct ieee80211_vht_cap
)) {
3847 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
3852 ifmgd
->flags
|= ieee80211_determine_chantype(sdata
, sband
,
3857 sdata
->needed_rx_chains
= min(ieee80211_ht_vht_rx_chains(sdata
, cbss
),
3862 /* will change later if needed */
3863 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
3866 * If this fails (possibly due to channel context sharing
3867 * on incompatible channels, e.g. 80+80 and 160 sharing the
3868 * same control channel) try to use a smaller bandwidth.
3870 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
3871 IEEE80211_CHANCTX_SHARED
);
3873 /* don't downgrade for 5 and 10 MHz channels, though. */
3874 if (chandef
.width
== NL80211_CHAN_WIDTH_5
||
3875 chandef
.width
== NL80211_CHAN_WIDTH_10
)
3878 while (ret
&& chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
) {
3879 ifmgd
->flags
|= chandef_downgrade(&chandef
);
3880 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
3881 IEEE80211_CHANCTX_SHARED
);
3886 static int ieee80211_prep_connection(struct ieee80211_sub_if_data
*sdata
,
3887 struct cfg80211_bss
*cbss
, bool assoc
)
3889 struct ieee80211_local
*local
= sdata
->local
;
3890 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3891 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
3892 struct sta_info
*new_sta
= NULL
;
3893 bool have_sta
= false;
3896 if (WARN_ON(!ifmgd
->auth_data
&& !ifmgd
->assoc_data
))
3901 have_sta
= sta_info_get(sdata
, cbss
->bssid
);
3906 new_sta
= sta_info_alloc(sdata
, cbss
->bssid
, GFP_KERNEL
);
3911 u32 rates
= 0, basic_rates
= 0;
3912 bool have_higher_than_11mbit
;
3913 int min_rate
= INT_MAX
, min_rate_index
= -1;
3914 struct ieee80211_chanctx_conf
*chanctx_conf
;
3915 struct ieee80211_supported_band
*sband
;
3916 const struct cfg80211_bss_ies
*ies
;
3920 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
3922 err
= ieee80211_prep_channel(sdata
, cbss
);
3924 sta_info_free(local
, new_sta
);
3927 shift
= ieee80211_vif_get_shift(&sdata
->vif
);
3930 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
3931 if (WARN_ON(!chanctx_conf
)) {
3935 rate_flags
= ieee80211_chandef_rate_flags(&chanctx_conf
->def
);
3938 ieee80211_get_rates(sband
, bss
->supp_rates
,
3939 bss
->supp_rates_len
,
3940 &rates
, &basic_rates
,
3941 &have_higher_than_11mbit
,
3942 &min_rate
, &min_rate_index
,
3946 * This used to be a workaround for basic rates missing
3947 * in the association response frame. Now that we no
3948 * longer use the basic rates from there, it probably
3949 * doesn't happen any more, but keep the workaround so
3950 * in case some *other* APs are buggy in different ways
3951 * we can connect -- with a warning.
3953 if (!basic_rates
&& min_rate_index
>= 0) {
3955 "No basic rates, using min rate instead\n");
3956 basic_rates
= BIT(min_rate_index
);
3959 new_sta
->sta
.supp_rates
[cbss
->channel
->band
] = rates
;
3960 sdata
->vif
.bss_conf
.basic_rates
= basic_rates
;
3962 /* cf. IEEE 802.11 9.2.12 */
3963 if (cbss
->channel
->band
== IEEE80211_BAND_2GHZ
&&
3964 have_higher_than_11mbit
)
3965 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
3967 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
3969 memcpy(ifmgd
->bssid
, cbss
->bssid
, ETH_ALEN
);
3971 /* set timing information */
3972 sdata
->vif
.bss_conf
.beacon_int
= cbss
->beacon_interval
;
3974 ies
= rcu_dereference(cbss
->beacon_ies
);
3978 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
3979 sdata
->vif
.bss_conf
.sync_device_ts
=
3980 bss
->device_ts_beacon
;
3981 tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
3982 ies
->data
, ies
->len
);
3983 if (tim_ie
&& tim_ie
[1] >= 2)
3984 sdata
->vif
.bss_conf
.sync_dtim_count
= tim_ie
[2];
3986 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3987 } else if (!(local
->hw
.flags
&
3988 IEEE80211_HW_TIMING_BEACON_ONLY
)) {
3989 ies
= rcu_dereference(cbss
->proberesp_ies
);
3990 /* must be non-NULL since beacon IEs were NULL */
3991 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
3992 sdata
->vif
.bss_conf
.sync_device_ts
=
3993 bss
->device_ts_presp
;
3994 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3996 sdata
->vif
.bss_conf
.sync_tsf
= 0;
3997 sdata
->vif
.bss_conf
.sync_device_ts
= 0;
3998 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4002 /* tell driver about BSSID, basic rates and timing */
4003 ieee80211_bss_info_change_notify(sdata
,
4004 BSS_CHANGED_BSSID
| BSS_CHANGED_BASIC_RATES
|
4005 BSS_CHANGED_BEACON_INT
);
4008 sta_info_pre_move_state(new_sta
, IEEE80211_STA_AUTH
);
4010 err
= sta_info_insert(new_sta
);
4014 "failed to insert STA entry for the AP (error %d)\n",
4019 WARN_ON_ONCE(!ether_addr_equal(ifmgd
->bssid
, cbss
->bssid
));
4025 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
4026 struct cfg80211_auth_request
*req
)
4028 struct ieee80211_local
*local
= sdata
->local
;
4029 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4030 struct ieee80211_mgd_auth_data
*auth_data
;
4034 /* prepare auth data structure */
4036 switch (req
->auth_type
) {
4037 case NL80211_AUTHTYPE_OPEN_SYSTEM
:
4038 auth_alg
= WLAN_AUTH_OPEN
;
4040 case NL80211_AUTHTYPE_SHARED_KEY
:
4041 if (IS_ERR(local
->wep_tx_tfm
))
4043 auth_alg
= WLAN_AUTH_SHARED_KEY
;
4045 case NL80211_AUTHTYPE_FT
:
4046 auth_alg
= WLAN_AUTH_FT
;
4048 case NL80211_AUTHTYPE_NETWORK_EAP
:
4049 auth_alg
= WLAN_AUTH_LEAP
;
4051 case NL80211_AUTHTYPE_SAE
:
4052 auth_alg
= WLAN_AUTH_SAE
;
4058 auth_data
= kzalloc(sizeof(*auth_data
) + req
->sae_data_len
+
4059 req
->ie_len
, GFP_KERNEL
);
4063 auth_data
->bss
= req
->bss
;
4065 if (req
->sae_data_len
>= 4) {
4066 __le16
*pos
= (__le16
*) req
->sae_data
;
4067 auth_data
->sae_trans
= le16_to_cpu(pos
[0]);
4068 auth_data
->sae_status
= le16_to_cpu(pos
[1]);
4069 memcpy(auth_data
->data
, req
->sae_data
+ 4,
4070 req
->sae_data_len
- 4);
4071 auth_data
->data_len
+= req
->sae_data_len
- 4;
4074 if (req
->ie
&& req
->ie_len
) {
4075 memcpy(&auth_data
->data
[auth_data
->data_len
],
4076 req
->ie
, req
->ie_len
);
4077 auth_data
->data_len
+= req
->ie_len
;
4080 if (req
->key
&& req
->key_len
) {
4081 auth_data
->key_len
= req
->key_len
;
4082 auth_data
->key_idx
= req
->key_idx
;
4083 memcpy(auth_data
->key
, req
->key
, req
->key_len
);
4086 auth_data
->algorithm
= auth_alg
;
4088 /* try to authenticate/probe */
4090 if ((ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) ||
4091 ifmgd
->assoc_data
) {
4096 if (ifmgd
->auth_data
)
4097 ieee80211_destroy_auth_data(sdata
, false);
4099 /* prep auth_data so we don't go into idle on disassoc */
4100 ifmgd
->auth_data
= auth_data
;
4102 if (ifmgd
->associated
) {
4103 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4105 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4106 WLAN_REASON_UNSPECIFIED
,
4109 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4113 sdata_info(sdata
, "authenticate with %pM\n", req
->bss
->bssid
);
4115 err
= ieee80211_prep_connection(sdata
, req
->bss
, false);
4119 err
= ieee80211_probe_auth(sdata
);
4121 sta_info_destroy_addr(sdata
, req
->bss
->bssid
);
4125 /* hold our own reference */
4126 cfg80211_ref_bss(local
->hw
.wiphy
, auth_data
->bss
);
4130 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
4131 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4132 ifmgd
->auth_data
= NULL
;
4138 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
4139 struct cfg80211_assoc_request
*req
)
4141 struct ieee80211_local
*local
= sdata
->local
;
4142 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4143 struct ieee80211_bss
*bss
= (void *)req
->bss
->priv
;
4144 struct ieee80211_mgd_assoc_data
*assoc_data
;
4145 const struct cfg80211_bss_ies
*beacon_ies
;
4146 struct ieee80211_supported_band
*sband
;
4147 const u8
*ssidie
, *ht_ie
, *vht_ie
;
4150 assoc_data
= kzalloc(sizeof(*assoc_data
) + req
->ie_len
, GFP_KERNEL
);
4155 ssidie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_SSID
);
4161 memcpy(assoc_data
->ssid
, ssidie
+ 2, ssidie
[1]);
4162 assoc_data
->ssid_len
= ssidie
[1];
4165 if (ifmgd
->associated
) {
4166 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4168 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4169 WLAN_REASON_UNSPECIFIED
,
4172 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4176 if (ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) {
4181 if (ifmgd
->assoc_data
) {
4186 if (ifmgd
->auth_data
) {
4189 /* keep sta info, bssid if matching */
4190 match
= ether_addr_equal(ifmgd
->bssid
, req
->bss
->bssid
);
4191 ieee80211_destroy_auth_data(sdata
, match
);
4194 /* prepare assoc data */
4196 ifmgd
->beacon_crc_valid
= false;
4199 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4200 * We still associate in non-HT mode (11a/b/g) if any one of these
4201 * ciphers is configured as pairwise.
4202 * We can set this to true for non-11n hardware, that'll be checked
4203 * separately along with the peer capabilities.
4205 for (i
= 0; i
< req
->crypto
.n_ciphers_pairwise
; i
++) {
4206 if (req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP40
||
4207 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_TKIP
||
4208 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP104
) {
4209 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4210 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4211 netdev_info(sdata
->dev
,
4212 "disabling HT/VHT due to WEP/TKIP use\n");
4216 if (req
->flags
& ASSOC_REQ_DISABLE_HT
) {
4217 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4218 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4221 if (req
->flags
& ASSOC_REQ_DISABLE_VHT
)
4222 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4224 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4225 sband
= local
->hw
.wiphy
->bands
[req
->bss
->channel
->band
];
4226 if (!sband
->ht_cap
.ht_supported
||
4227 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
) {
4228 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4230 netdev_info(sdata
->dev
,
4231 "disabling HT as WMM/QoS is not supported by the AP\n");
4234 /* disable VHT if we don't support it or the AP doesn't use WMM */
4235 if (!sband
->vht_cap
.vht_supported
||
4236 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
) {
4237 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4239 netdev_info(sdata
->dev
,
4240 "disabling VHT as WMM/QoS is not supported by the AP\n");
4243 memcpy(&ifmgd
->ht_capa
, &req
->ht_capa
, sizeof(ifmgd
->ht_capa
));
4244 memcpy(&ifmgd
->ht_capa_mask
, &req
->ht_capa_mask
,
4245 sizeof(ifmgd
->ht_capa_mask
));
4247 memcpy(&ifmgd
->vht_capa
, &req
->vht_capa
, sizeof(ifmgd
->vht_capa
));
4248 memcpy(&ifmgd
->vht_capa_mask
, &req
->vht_capa_mask
,
4249 sizeof(ifmgd
->vht_capa_mask
));
4251 if (req
->ie
&& req
->ie_len
) {
4252 memcpy(assoc_data
->ie
, req
->ie
, req
->ie_len
);
4253 assoc_data
->ie_len
= req
->ie_len
;
4256 assoc_data
->bss
= req
->bss
;
4258 if (ifmgd
->req_smps
== IEEE80211_SMPS_AUTOMATIC
) {
4259 if (ifmgd
->powersave
)
4260 sdata
->smps_mode
= IEEE80211_SMPS_DYNAMIC
;
4262 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
4264 sdata
->smps_mode
= ifmgd
->req_smps
;
4266 assoc_data
->capability
= req
->bss
->capability
;
4267 assoc_data
->wmm
= bss
->wmm_used
&&
4268 (local
->hw
.queues
>= IEEE80211_NUM_ACS
);
4269 assoc_data
->supp_rates
= bss
->supp_rates
;
4270 assoc_data
->supp_rates_len
= bss
->supp_rates_len
;
4273 ht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_HT_OPERATION
);
4274 if (ht_ie
&& ht_ie
[1] >= sizeof(struct ieee80211_ht_operation
))
4275 assoc_data
->ap_ht_param
=
4276 ((struct ieee80211_ht_operation
*)(ht_ie
+ 2))->ht_param
;
4278 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4279 vht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_VHT_CAPABILITY
);
4280 if (vht_ie
&& vht_ie
[1] >= sizeof(struct ieee80211_vht_cap
))
4281 memcpy(&assoc_data
->ap_vht_cap
, vht_ie
+ 2,
4282 sizeof(struct ieee80211_vht_cap
));
4284 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4287 if (bss
->wmm_used
&& bss
->uapsd_supported
&&
4288 (sdata
->local
->hw
.flags
& IEEE80211_HW_SUPPORTS_UAPSD
) &&
4289 sdata
->wmm_acm
!= 0xff) {
4290 assoc_data
->uapsd
= true;
4291 ifmgd
->flags
|= IEEE80211_STA_UAPSD_ENABLED
;
4293 assoc_data
->uapsd
= false;
4294 ifmgd
->flags
&= ~IEEE80211_STA_UAPSD_ENABLED
;
4297 if (req
->prev_bssid
)
4298 memcpy(assoc_data
->prev_bssid
, req
->prev_bssid
, ETH_ALEN
);
4301 ifmgd
->mfp
= IEEE80211_MFP_REQUIRED
;
4302 ifmgd
->flags
|= IEEE80211_STA_MFP_ENABLED
;
4304 ifmgd
->mfp
= IEEE80211_MFP_DISABLED
;
4305 ifmgd
->flags
&= ~IEEE80211_STA_MFP_ENABLED
;
4308 if (req
->crypto
.control_port
)
4309 ifmgd
->flags
|= IEEE80211_STA_CONTROL_PORT
;
4311 ifmgd
->flags
&= ~IEEE80211_STA_CONTROL_PORT
;
4313 sdata
->control_port_protocol
= req
->crypto
.control_port_ethertype
;
4314 sdata
->control_port_no_encrypt
= req
->crypto
.control_port_no_encrypt
;
4316 /* kick off associate process */
4318 ifmgd
->assoc_data
= assoc_data
;
4319 ifmgd
->dtim_period
= 0;
4320 ifmgd
->have_beacon
= false;
4322 err
= ieee80211_prep_connection(sdata
, req
->bss
, true);
4327 beacon_ies
= rcu_dereference(req
->bss
->beacon_ies
);
4329 if (sdata
->local
->hw
.flags
& IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC
&&
4332 * Wait up to one beacon interval ...
4333 * should this be more if we miss one?
4335 sdata_info(sdata
, "waiting for beacon from %pM\n",
4337 assoc_data
->timeout
= TU_TO_EXP_TIME(req
->bss
->beacon_interval
);
4338 assoc_data
->timeout_started
= true;
4339 assoc_data
->need_beacon
= true;
4340 } else if (beacon_ies
) {
4341 const u8
*tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
4346 if (tim_ie
&& tim_ie
[1] >= sizeof(struct ieee80211_tim_ie
)) {
4347 const struct ieee80211_tim_ie
*tim
;
4348 tim
= (void *)(tim_ie
+ 2);
4349 ifmgd
->dtim_period
= tim
->dtim_period
;
4350 dtim_count
= tim
->dtim_count
;
4352 ifmgd
->have_beacon
= true;
4353 assoc_data
->timeout
= jiffies
;
4354 assoc_data
->timeout_started
= true;
4356 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
4357 sdata
->vif
.bss_conf
.sync_tsf
= beacon_ies
->tsf
;
4358 sdata
->vif
.bss_conf
.sync_device_ts
=
4359 bss
->device_ts_beacon
;
4360 sdata
->vif
.bss_conf
.sync_dtim_count
= dtim_count
;
4363 assoc_data
->timeout
= jiffies
;
4364 assoc_data
->timeout_started
= true;
4368 run_again(sdata
, assoc_data
->timeout
);
4370 if (bss
->corrupt_data
) {
4371 char *corrupt_type
= "data";
4372 if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_BEACON
) {
4373 if (bss
->corrupt_data
&
4374 IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4375 corrupt_type
= "beacon and probe response";
4377 corrupt_type
= "beacon";
4378 } else if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4379 corrupt_type
= "probe response";
4380 sdata_info(sdata
, "associating with AP with corrupt %s\n",
4386 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
4387 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4388 ifmgd
->assoc_data
= NULL
;
4394 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
4395 struct cfg80211_deauth_request
*req
)
4397 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4398 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4399 bool tx
= !req
->local_state_change
;
4400 bool report_frame
= false;
4403 "deauthenticating from %pM by local choice (reason=%d)\n",
4404 req
->bssid
, req
->reason_code
);
4406 if (ifmgd
->auth_data
) {
4407 drv_mgd_prepare_tx(sdata
->local
, sdata
);
4408 ieee80211_send_deauth_disassoc(sdata
, req
->bssid
,
4409 IEEE80211_STYPE_DEAUTH
,
4410 req
->reason_code
, tx
,
4412 ieee80211_destroy_auth_data(sdata
, false);
4414 report_frame
= true;
4418 if (ifmgd
->associated
&&
4419 ether_addr_equal(ifmgd
->associated
->bssid
, req
->bssid
)) {
4420 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4421 req
->reason_code
, tx
, frame_buf
);
4422 report_frame
= true;
4427 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4428 IEEE80211_DEAUTH_FRAME_LEN
);
4433 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
4434 struct cfg80211_disassoc_request
*req
)
4436 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4438 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4441 * cfg80211 should catch this ... but it's racy since
4442 * we can receive a disassoc frame, process it, hand it
4443 * to cfg80211 while that's in a locked section already
4444 * trying to tell us that the user wants to disconnect.
4446 if (ifmgd
->associated
!= req
->bss
)
4450 "disassociating from %pM by local choice (reason=%d)\n",
4451 req
->bss
->bssid
, req
->reason_code
);
4453 memcpy(bssid
, req
->bss
->bssid
, ETH_ALEN
);
4454 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DISASSOC
,
4455 req
->reason_code
, !req
->local_state_change
,
4458 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4459 IEEE80211_DEAUTH_FRAME_LEN
);
4464 void ieee80211_mgd_stop(struct ieee80211_sub_if_data
*sdata
)
4466 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4469 * Make sure some work items will not run after this,
4470 * they will not do anything but might not have been
4471 * cancelled when disconnecting.
4473 cancel_work_sync(&ifmgd
->monitor_work
);
4474 cancel_work_sync(&ifmgd
->beacon_connection_loss_work
);
4475 cancel_work_sync(&ifmgd
->request_smps_work
);
4476 cancel_work_sync(&ifmgd
->csa_connection_drop_work
);
4477 cancel_work_sync(&ifmgd
->chswitch_work
);
4480 if (ifmgd
->assoc_data
) {
4481 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
4482 ieee80211_destroy_assoc_data(sdata
, false);
4483 cfg80211_assoc_timeout(sdata
->dev
, bss
);
4485 if (ifmgd
->auth_data
)
4486 ieee80211_destroy_auth_data(sdata
, false);
4487 del_timer_sync(&ifmgd
->timer
);
4488 sdata_unlock(sdata
);
4491 void ieee80211_cqm_rssi_notify(struct ieee80211_vif
*vif
,
4492 enum nl80211_cqm_rssi_threshold_event rssi_event
,
4495 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
4497 trace_api_cqm_rssi_notify(sdata
, rssi_event
);
4499 cfg80211_cqm_rssi_notify(sdata
->dev
, rssi_event
, gfp
);
4501 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify
);