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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
5394af4d | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
f0706e82 JB |
4 | * Copyright 2004, Instant802 Networks, Inc. |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
8 | * | |
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. | |
12 | */ | |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
f0706e82 JB |
15 | #include <linux/if_ether.h> |
16 | #include <linux/skbuff.h> | |
f0706e82 | 17 | #include <linux/if_arp.h> |
f0706e82 | 18 | #include <linux/etherdevice.h> |
d9b93842 | 19 | #include <linux/moduleparam.h> |
d0709a65 | 20 | #include <linux/rtnetlink.h> |
e8db0be1 | 21 | #include <linux/pm_qos.h> |
d91f36db | 22 | #include <linux/crc32.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
bc3b2d7f | 24 | #include <linux/export.h> |
f0706e82 | 25 | #include <net/mac80211.h> |
472dbc45 | 26 | #include <asm/unaligned.h> |
60f8b39c | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 JB |
30 | #include "rate.h" |
31 | #include "led.h" | |
f0706e82 | 32 | |
1672c0e3 | 33 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 34 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
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) | |
cb236d2d | 39 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
40 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
41 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 42 | |
180205bd BG |
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)."); | |
47 | ||
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)."); | |
b291ba11 JB |
52 | |
53 | /* | |
7ccc8bd7 FF |
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. | |
b291ba11 | 60 | */ |
59c1ec2b BG |
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."); | |
7ccc8bd7 | 65 | |
b291ba11 JB |
66 | /* |
67 | * Time the connection can be idle before we probe | |
68 | * it to see if we can still talk to the AP. | |
69 | */ | |
d1c5091f | 70 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
71 | /* |
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. | |
75 | */ | |
180205bd BG |
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)."); | |
f0706e82 | 81 | |
17e4ec14 JM |
82 | /* |
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 | |
85 | * between 1 and 15. | |
86 | */ | |
87 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
88 | ||
391a200a JM |
89 | /* |
90 | * How many Beacon frames need to have been used in average signal strength | |
91 | * before starting to indicate signal change events. | |
92 | */ | |
93 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
94 | ||
ca386f31 JB |
95 | /* |
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 | |
103 | * do that. | |
104 | */ | |
8d61ffa5 JB |
105 | static void run_again(struct ieee80211_sub_if_data *sdata, |
106 | unsigned long timeout) | |
ca386f31 | 107 | { |
8d61ffa5 | 108 | sdata_assert_lock(sdata); |
ca386f31 | 109 | |
8d61ffa5 JB |
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); | |
ca386f31 JB |
113 | } |
114 | ||
d3a910a8 | 115 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 116 | { |
c1288b12 | 117 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
118 | return; |
119 | ||
7eeff74c JB |
120 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
121 | return; | |
122 | ||
b291ba11 | 123 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 124 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
125 | } |
126 | ||
be099e82 LR |
127 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
128 | { | |
0c699c3a LR |
129 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
130 | ||
8628172f SG |
131 | if (unlikely(!sdata->u.mgd.associated)) |
132 | return; | |
133 | ||
be099e82 LR |
134 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
135 | return; | |
136 | ||
137 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
138 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
0c699c3a LR |
139 | |
140 | ifmgd->probe_send_count = 0; | |
be099e82 LR |
141 | } |
142 | ||
5484e237 | 143 | static int ecw2cw(int ecw) |
60f8b39c | 144 | { |
5484e237 | 145 | return (1 << ecw) - 1; |
60f8b39c JB |
146 | } |
147 | ||
6565ec9b JB |
148 | static u32 |
149 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
150 | struct ieee80211_supported_band *sband, | |
151 | struct ieee80211_channel *channel, | |
152 | const struct ieee80211_ht_operation *ht_oper, | |
153 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 154 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 155 | { |
5cdaed1e | 156 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b JB |
157 | struct cfg80211_chan_def vht_chandef; |
158 | u32 ht_cfreq, ret; | |
159 | ||
160 | chandef->chan = channel; | |
161 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
162 | chandef->center_freq1 = channel->center_freq; | |
163 | chandef->center_freq2 = 0; | |
164 | ||
165 | if (!ht_oper || !sband->ht_cap.ht_supported) { | |
166 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
167 | goto out; | |
168 | } | |
169 | ||
170 | chandef->width = NL80211_CHAN_WIDTH_20; | |
171 | ||
172 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
173 | channel->band); | |
174 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 175 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
176 | /* |
177 | * It's possible that some APs are confused here; | |
178 | * Netgear WNDR3700 sometimes reports 4 higher than | |
179 | * the actual channel in association responses, but | |
180 | * since we look at probe response/beacon data here | |
181 | * it should be OK. | |
182 | */ | |
5cdaed1e JB |
183 | sdata_info(sdata, |
184 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
185 | channel->center_freq, ht_cfreq, | |
186 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
187 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
188 | goto out; | |
189 | } | |
190 | ||
191 | /* check 40 MHz support, if we have it */ | |
192 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
193 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
194 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
195 | chandef->width = NL80211_CHAN_WIDTH_40; | |
196 | chandef->center_freq1 += 10; | |
197 | break; | |
198 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
199 | chandef->width = NL80211_CHAN_WIDTH_40; | |
200 | chandef->center_freq1 -= 10; | |
201 | break; | |
202 | } | |
203 | } else { | |
204 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
205 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
206 | /* also mark 40 MHz disabled */ |
207 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
208 | goto out; |
209 | } | |
210 | ||
211 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
212 | ret = IEEE80211_STA_DISABLE_VHT; | |
213 | goto out; | |
214 | } | |
215 | ||
216 | vht_chandef.chan = channel; | |
217 | vht_chandef.center_freq1 = | |
218 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
219 | channel->band); | |
220 | vht_chandef.center_freq2 = 0; | |
221 | ||
6565ec9b JB |
222 | switch (vht_oper->chan_width) { |
223 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
224 | vht_chandef.width = chandef->width; | |
225 | break; | |
226 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
227 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
228 | break; | |
229 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
230 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
231 | break; | |
232 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
233 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
234 | vht_chandef.center_freq2 = |
235 | ieee80211_channel_to_frequency( | |
236 | vht_oper->center_freq_seg2_idx, | |
237 | channel->band); | |
6565ec9b JB |
238 | break; |
239 | default: | |
5cdaed1e | 240 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
241 | sdata_info(sdata, |
242 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
243 | vht_oper->chan_width); | |
6565ec9b JB |
244 | ret = IEEE80211_STA_DISABLE_VHT; |
245 | goto out; | |
246 | } | |
247 | ||
248 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 249 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
250 | sdata_info(sdata, |
251 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
252 | ret = IEEE80211_STA_DISABLE_VHT; |
253 | goto out; | |
254 | } | |
255 | ||
256 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
257 | ret = 0; | |
258 | goto out; | |
259 | } | |
260 | ||
261 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 262 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
263 | sdata_info(sdata, |
264 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
265 | ret = IEEE80211_STA_DISABLE_VHT; |
266 | goto out; | |
267 | } | |
268 | ||
269 | *chandef = vht_chandef; | |
270 | ||
271 | ret = 0; | |
272 | ||
273 | out: | |
586e01ed JB |
274 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
275 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
276 | vht_chandef = *chandef; | |
277 | ||
ddfe49b4 JB |
278 | /* |
279 | * Ignore the DISABLED flag when we're already connected and only | |
280 | * tracking the APs beacon for bandwidth changes - otherwise we | |
281 | * might get disconnected here if we connect to an AP, update our | |
282 | * regulatory information based on the AP's country IE and the | |
283 | * information we have is wrong/outdated and disables the channel | |
284 | * that we're actually using for the connection to the AP. | |
285 | */ | |
6565ec9b | 286 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
287 | tracking ? 0 : |
288 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
289 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
290 | ret = IEEE80211_STA_DISABLE_HT | | |
291 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 292 | break; |
6565ec9b JB |
293 | } |
294 | ||
e6b7cde4 | 295 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
296 | } |
297 | ||
5cdaed1e | 298 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
299 | sdata_info(sdata, |
300 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
301 | ||
302 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
303 | return ret; | |
304 | } | |
305 | ||
30eb1dc2 JB |
306 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
307 | struct sta_info *sta, | |
308 | const struct ieee80211_ht_operation *ht_oper, | |
309 | const struct ieee80211_vht_operation *vht_oper, | |
310 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
311 | { |
312 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 313 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 314 | struct ieee80211_supported_band *sband; |
55de908a | 315 | struct ieee80211_channel *chan; |
30eb1dc2 | 316 | struct cfg80211_chan_def chandef; |
9ed6bcce | 317 | u16 ht_opmode; |
30eb1dc2 JB |
318 | u32 flags; |
319 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
320 | int ret; | |
d5522e03 | 321 | |
30eb1dc2 JB |
322 | /* if HT was/is disabled, don't track any bandwidth changes */ |
323 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
324 | return 0; |
325 | ||
30eb1dc2 JB |
326 | /* don't check VHT if we associated as non-VHT station */ |
327 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
328 | vht_oper = NULL; | |
329 | ||
330 | if (WARN_ON_ONCE(!sta)) | |
331 | return -EINVAL; | |
332 | ||
017b45bb AA |
333 | /* |
334 | * if bss configuration changed store the new one - | |
335 | * this may be applicable even if channel is identical | |
336 | */ | |
337 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
338 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
339 | *changed |= BSS_CHANGED_HT; | |
340 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
341 | } | |
342 | ||
f2d9330e | 343 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 344 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 345 | |
30eb1dc2 JB |
346 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
347 | flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper, | |
5cdaed1e | 348 | vht_oper, &chandef, true); |
30eb1dc2 JB |
349 | |
350 | /* | |
351 | * Downgrade the new channel if we associated with restricted | |
352 | * capabilities. For example, if we associated as a 20 MHz STA | |
353 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
354 | * reasons) then switching to a 40 MHz channel now won't do us | |
355 | * any good -- we couldn't use it with the AP. | |
356 | */ | |
357 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
358 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 359 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
360 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
361 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 362 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
363 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
364 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 365 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
366 | |
367 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
368 | return 0; | |
369 | ||
370 | sdata_info(sdata, | |
371 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
372 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
373 | chandef.center_freq1, chandef.center_freq2); | |
374 | ||
375 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
376 | IEEE80211_STA_DISABLE_VHT | | |
377 | IEEE80211_STA_DISABLE_40MHZ | | |
378 | IEEE80211_STA_DISABLE_80P80MHZ | | |
379 | IEEE80211_STA_DISABLE_160MHZ)) || | |
380 | !cfg80211_chandef_valid(&chandef)) { | |
381 | sdata_info(sdata, | |
382 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
383 | ifmgd->bssid); | |
384 | return -EINVAL; | |
385 | } | |
386 | ||
387 | switch (chandef.width) { | |
388 | case NL80211_CHAN_WIDTH_20_NOHT: | |
389 | case NL80211_CHAN_WIDTH_20: | |
390 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
391 | break; | |
4bf88530 | 392 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 393 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 394 | break; |
30eb1dc2 JB |
395 | case NL80211_CHAN_WIDTH_80: |
396 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
397 | break; | |
398 | case NL80211_CHAN_WIDTH_80P80: | |
399 | case NL80211_CHAN_WIDTH_160: | |
400 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 401 | break; |
30eb1dc2 JB |
402 | default: |
403 | return -EINVAL; | |
64f68e5d | 404 | } |
d5522e03 | 405 | |
30eb1dc2 JB |
406 | if (new_sta_bw > sta->cur_max_bandwidth) |
407 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 408 | |
30eb1dc2 JB |
409 | if (new_sta_bw < sta->sta.bandwidth) { |
410 | sta->sta.bandwidth = new_sta_bw; | |
411 | rate_control_rate_update(local, sband, sta, | |
412 | IEEE80211_RC_BW_CHANGED); | |
413 | } | |
64f68e5d | 414 | |
30eb1dc2 JB |
415 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
416 | if (ret) { | |
417 | sdata_info(sdata, | |
418 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
419 | ifmgd->bssid); | |
420 | return ret; | |
421 | } | |
7cc44ed4 | 422 | |
30eb1dc2 JB |
423 | if (new_sta_bw > sta->sta.bandwidth) { |
424 | sta->sta.bandwidth = new_sta_bw; | |
425 | rate_control_rate_update(local, sband, sta, | |
426 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 427 | } |
d5522e03 | 428 | |
30eb1dc2 | 429 | return 0; |
d5522e03 JB |
430 | } |
431 | ||
9c6bd790 JB |
432 | /* frame sending functions */ |
433 | ||
66e67e41 | 434 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 435 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
436 | struct ieee80211_supported_band *sband, |
437 | struct ieee80211_channel *channel, | |
438 | enum ieee80211_smps_mode smps) | |
439 | { | |
66e67e41 JB |
440 | u8 *pos; |
441 | u32 flags = channel->flags; | |
442 | u16 cap; | |
443 | struct ieee80211_sta_ht_cap ht_cap; | |
444 | ||
445 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
446 | ||
66e67e41 JB |
447 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
448 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
449 | ||
66e67e41 JB |
450 | /* determine capability flags */ |
451 | cap = ht_cap.cap; | |
452 | ||
9dde6423 | 453 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
454 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
455 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
456 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
457 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
458 | } | |
459 | break; | |
460 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
461 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
462 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
463 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
464 | } | |
465 | break; | |
466 | } | |
467 | ||
24398e39 JB |
468 | /* |
469 | * If 40 MHz was disabled associate as though we weren't | |
470 | * capable of 40 MHz -- some broken APs will never fall | |
471 | * back to trying to transmit in 20 MHz. | |
472 | */ | |
473 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
474 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
475 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
476 | } | |
477 | ||
66e67e41 JB |
478 | /* set SM PS mode properly */ |
479 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
480 | switch (smps) { | |
481 | case IEEE80211_SMPS_AUTOMATIC: | |
482 | case IEEE80211_SMPS_NUM_MODES: | |
483 | WARN_ON(1); | |
484 | case IEEE80211_SMPS_OFF: | |
485 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
486 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
487 | break; | |
488 | case IEEE80211_SMPS_STATIC: | |
489 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
490 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
491 | break; | |
492 | case IEEE80211_SMPS_DYNAMIC: | |
493 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
494 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
495 | break; | |
496 | } | |
497 | ||
498 | /* reserve and fill IE */ | |
499 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
500 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
501 | } | |
502 | ||
d545daba MP |
503 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
504 | struct sk_buff *skb, | |
b08fbbd8 JB |
505 | struct ieee80211_supported_band *sband, |
506 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
507 | { |
508 | u8 *pos; | |
509 | u32 cap; | |
510 | struct ieee80211_sta_vht_cap vht_cap; | |
511 | ||
512 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
513 | ||
514 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 515 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
516 | |
517 | /* determine capability flags */ | |
518 | cap = vht_cap.cap; | |
519 | ||
f2d9d270 JB |
520 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
521 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
522 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
523 | } | |
524 | ||
525 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
526 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
527 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
528 | } | |
529 | ||
b08fbbd8 JB |
530 | /* |
531 | * Some APs apparently get confused if our capabilities are better | |
532 | * than theirs, so restrict what we advertise in the assoc request. | |
533 | */ | |
534 | if (!(ap_vht_cap->vht_cap_info & | |
535 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
536 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
537 | ||
d545daba | 538 | /* reserve and fill IE */ |
d4950281 | 539 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
540 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
541 | } | |
542 | ||
66e67e41 JB |
543 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
544 | { | |
545 | struct ieee80211_local *local = sdata->local; | |
546 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
547 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
548 | struct sk_buff *skb; | |
549 | struct ieee80211_mgmt *mgmt; | |
550 | u8 *pos, qos_info; | |
551 | size_t offset = 0, noffset; | |
2103dec1 | 552 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
553 | u16 capab; |
554 | struct ieee80211_supported_band *sband; | |
55de908a JB |
555 | struct ieee80211_chanctx_conf *chanctx_conf; |
556 | struct ieee80211_channel *chan; | |
2103dec1 | 557 | u32 rate_flags, rates = 0; |
66e67e41 | 558 | |
8d61ffa5 | 559 | sdata_assert_lock(sdata); |
66e67e41 | 560 | |
55de908a JB |
561 | rcu_read_lock(); |
562 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
563 | if (WARN_ON(!chanctx_conf)) { | |
564 | rcu_read_unlock(); | |
565 | return; | |
566 | } | |
4bf88530 | 567 | chan = chanctx_conf->def.chan; |
2103dec1 | 568 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
569 | rcu_read_unlock(); |
570 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 571 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
572 | |
573 | if (assoc_data->supp_rates_len) { | |
574 | /* | |
575 | * Get all rates supported by the device and the AP as | |
576 | * some APs don't like getting a superset of their rates | |
577 | * in the association request (e.g. D-Link DAP 1353 in | |
578 | * b-only mode)... | |
579 | */ | |
2103dec1 SW |
580 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
581 | assoc_data->supp_rates, | |
582 | assoc_data->supp_rates_len, | |
583 | &rates); | |
66e67e41 JB |
584 | } else { |
585 | /* | |
586 | * In case AP not provide any supported rates information | |
587 | * before association, we send information element(s) with | |
588 | * all rates that we support. | |
589 | */ | |
2103dec1 SW |
590 | rates_len = 0; |
591 | for (i = 0; i < sband->n_bitrates; i++) { | |
592 | if ((rate_flags & sband->bitrates[i].flags) | |
593 | != rate_flags) | |
594 | continue; | |
595 | rates |= BIT(i); | |
596 | rates_len++; | |
597 | } | |
66e67e41 JB |
598 | } |
599 | ||
600 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
601 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
602 | 2 + assoc_data->ssid_len + /* SSID */ | |
603 | 4 + rates_len + /* (extended) rates */ | |
604 | 4 + /* power capability */ | |
605 | 2 + 2 * sband->n_channels + /* supported channels */ | |
606 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 607 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
608 | assoc_data->ie_len + /* extra IEs */ |
609 | 9, /* WMM */ | |
610 | GFP_KERNEL); | |
611 | if (!skb) | |
612 | return; | |
613 | ||
614 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
615 | ||
616 | capab = WLAN_CAPABILITY_ESS; | |
617 | ||
618 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
619 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
620 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
621 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
622 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
623 | } | |
624 | ||
625 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
626 | capab |= WLAN_CAPABILITY_PRIVACY; | |
627 | ||
628 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
629 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
630 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
631 | ||
632 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
633 | memset(mgmt, 0, 24); | |
634 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
635 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
636 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
637 | ||
638 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
639 | skb_put(skb, 10); | |
640 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
641 | IEEE80211_STYPE_REASSOC_REQ); | |
642 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
643 | mgmt->u.reassoc_req.listen_interval = | |
644 | cpu_to_le16(local->hw.conf.listen_interval); | |
645 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
646 | ETH_ALEN); | |
647 | } else { | |
648 | skb_put(skb, 4); | |
649 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
650 | IEEE80211_STYPE_ASSOC_REQ); | |
651 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
652 | mgmt->u.assoc_req.listen_interval = | |
653 | cpu_to_le16(local->hw.conf.listen_interval); | |
654 | } | |
655 | ||
656 | /* SSID */ | |
657 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
658 | *pos++ = WLAN_EID_SSID; | |
659 | *pos++ = assoc_data->ssid_len; | |
660 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
661 | ||
662 | /* add all rates which were marked to be used above */ | |
663 | supp_rates_len = rates_len; | |
664 | if (supp_rates_len > 8) | |
665 | supp_rates_len = 8; | |
666 | ||
667 | pos = skb_put(skb, supp_rates_len + 2); | |
668 | *pos++ = WLAN_EID_SUPP_RATES; | |
669 | *pos++ = supp_rates_len; | |
670 | ||
671 | count = 0; | |
672 | for (i = 0; i < sband->n_bitrates; i++) { | |
673 | if (BIT(i) & rates) { | |
2103dec1 SW |
674 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
675 | 5 * (1 << shift)); | |
676 | *pos++ = (u8) rate; | |
66e67e41 JB |
677 | if (++count == 8) |
678 | break; | |
679 | } | |
680 | } | |
681 | ||
682 | if (rates_len > count) { | |
683 | pos = skb_put(skb, rates_len - count + 2); | |
684 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
685 | *pos++ = rates_len - count; | |
686 | ||
687 | for (i++; i < sband->n_bitrates; i++) { | |
688 | if (BIT(i) & rates) { | |
2103dec1 SW |
689 | int rate; |
690 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
691 | 5 * (1 << shift)); | |
692 | *pos++ = (u8) rate; | |
66e67e41 JB |
693 | } |
694 | } | |
695 | } | |
696 | ||
697 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
698 | /* 1. power capabilities */ | |
699 | pos = skb_put(skb, 4); | |
700 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
701 | *pos++ = 2; | |
702 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
703 | /* max tx power */ |
704 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
66e67e41 JB |
705 | |
706 | /* 2. supported channels */ | |
707 | /* TODO: get this in reg domain format */ | |
708 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
709 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
710 | *pos++ = 2 * sband->n_channels; | |
711 | for (i = 0; i < sband->n_channels; i++) { | |
712 | *pos++ = ieee80211_frequency_to_channel( | |
713 | sband->channels[i].center_freq); | |
714 | *pos++ = 1; /* one channel in the subband*/ | |
715 | } | |
716 | } | |
717 | ||
718 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 719 | if (assoc_data->ie_len) { |
66e67e41 JB |
720 | static const u8 before_ht[] = { |
721 | WLAN_EID_SSID, | |
722 | WLAN_EID_SUPP_RATES, | |
723 | WLAN_EID_EXT_SUPP_RATES, | |
724 | WLAN_EID_PWR_CAPABILITY, | |
725 | WLAN_EID_SUPPORTED_CHANNELS, | |
726 | WLAN_EID_RSN, | |
727 | WLAN_EID_QOS_CAPA, | |
728 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
729 | WLAN_EID_MOBILITY_DOMAIN, | |
730 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
731 | }; | |
732 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
733 | before_ht, ARRAY_SIZE(before_ht), | |
734 | offset); | |
735 | pos = skb_put(skb, noffset - offset); | |
736 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
737 | offset = noffset; | |
738 | } | |
739 | ||
f2d9d270 JB |
740 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
741 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
742 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
743 | ||
a8243b72 | 744 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 745 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 746 | sband, chan, sdata->smps_mode); |
66e67e41 | 747 | |
d545daba | 748 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
749 | ieee80211_add_vht_ie(sdata, skb, sband, |
750 | &assoc_data->ap_vht_cap); | |
d545daba | 751 | |
66e67e41 | 752 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 753 | if (assoc_data->ie_len) { |
66e67e41 JB |
754 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
755 | assoc_data->ie_len, | |
756 | offset); | |
757 | pos = skb_put(skb, noffset - offset); | |
758 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
759 | offset = noffset; | |
760 | } | |
761 | ||
76f0303d JB |
762 | if (assoc_data->wmm) { |
763 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
764 | qos_info = ifmgd->uapsd_queues; |
765 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
766 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
767 | } else { | |
768 | qos_info = 0; | |
769 | } | |
770 | ||
771 | pos = skb_put(skb, 9); | |
772 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
773 | *pos++ = 7; /* len */ | |
774 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
775 | *pos++ = 0x50; | |
776 | *pos++ = 0xf2; | |
777 | *pos++ = 2; /* WME */ | |
778 | *pos++ = 0; /* WME info */ | |
779 | *pos++ = 1; /* WME ver */ | |
780 | *pos++ = qos_info; | |
781 | } | |
782 | ||
783 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 784 | if (assoc_data->ie_len) { |
66e67e41 JB |
785 | noffset = assoc_data->ie_len; |
786 | pos = skb_put(skb, noffset - offset); | |
787 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
788 | } | |
789 | ||
a1845fc7 JB |
790 | drv_mgd_prepare_tx(local, sdata); |
791 | ||
66e67e41 | 792 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
793 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
794 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
795 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
796 | ieee80211_tx_skb(sdata, skb); |
797 | } | |
798 | ||
572e0012 KV |
799 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
800 | struct ieee80211_sub_if_data *sdata) | |
801 | { | |
572e0012 KV |
802 | struct ieee80211_pspoll *pspoll; |
803 | struct sk_buff *skb; | |
572e0012 | 804 | |
d8cd189e KV |
805 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
806 | if (!skb) | |
572e0012 | 807 | return; |
572e0012 | 808 | |
d8cd189e KV |
809 | pspoll = (struct ieee80211_pspoll *) skb->data; |
810 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 811 | |
62ae67be JB |
812 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
813 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
814 | } |
815 | ||
965bedad JB |
816 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
817 | struct ieee80211_sub_if_data *sdata, | |
818 | int powersave) | |
819 | { | |
820 | struct sk_buff *skb; | |
d8cd189e | 821 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 822 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 823 | |
d8cd189e KV |
824 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
825 | if (!skb) | |
965bedad | 826 | return; |
965bedad | 827 | |
d8cd189e | 828 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 829 | if (powersave) |
d8cd189e | 830 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 831 | |
6c17b77b SF |
832 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
833 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 PF |
834 | |
835 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) | |
836 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
837 | ||
392b9ffb | 838 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
839 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
840 | ||
62ae67be | 841 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
842 | } |
843 | ||
d524215f FF |
844 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
845 | struct ieee80211_sub_if_data *sdata) | |
846 | { | |
847 | struct sk_buff *skb; | |
848 | struct ieee80211_hdr *nullfunc; | |
849 | __le16 fc; | |
850 | ||
851 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
852 | return; | |
853 | ||
854 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 855 | if (!skb) |
d524215f | 856 | return; |
d15b8459 | 857 | |
d524215f FF |
858 | skb_reserve(skb, local->hw.extra_tx_headroom); |
859 | ||
860 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
861 | memset(nullfunc, 0, 30); | |
862 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
863 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
864 | nullfunc->frame_control = fc; | |
865 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
866 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
867 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
868 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
869 | ||
870 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
871 | ieee80211_tx_skb(sdata, skb); | |
872 | } | |
873 | ||
cc32abd4 JB |
874 | /* spectrum management related things */ |
875 | static void ieee80211_chswitch_work(struct work_struct *work) | |
876 | { | |
877 | struct ieee80211_sub_if_data *sdata = | |
878 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 879 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 880 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 AN |
881 | u32 changed = 0; |
882 | int ret; | |
cc32abd4 | 883 | |
9607e6b6 | 884 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
885 | return; |
886 | ||
8d61ffa5 | 887 | sdata_lock(sdata); |
77fdaa12 JB |
888 | if (!ifmgd->associated) |
889 | goto out; | |
cc32abd4 | 890 | |
34a3740d | 891 | mutex_lock(&local->mtx); |
33787fc4 | 892 | ret = ieee80211_vif_change_channel(sdata, &changed); |
34a3740d | 893 | mutex_unlock(&local->mtx); |
7578d575 AN |
894 | if (ret) { |
895 | sdata_info(sdata, | |
896 | "vif channel switch failed, disconnecting\n"); | |
897 | ieee80211_queue_work(&sdata->local->hw, | |
898 | &ifmgd->csa_connection_drop_work); | |
899 | goto out; | |
900 | } | |
675a0b04 | 901 | |
7578d575 | 902 | if (!local->use_chanctx) { |
33787fc4 | 903 | local->_oper_chandef = sdata->csa_chandef; |
7578d575 AN |
904 | /* Call "hw_config" only if doing sw channel switch. |
905 | * Otherwise update the channel directly | |
906 | */ | |
907 | if (!local->ops->channel_switch) | |
908 | ieee80211_hw_config(local, 0); | |
909 | else | |
910 | local->hw.conf.chandef = local->_oper_chandef; | |
5ce6e438 | 911 | } |
77fdaa12 | 912 | |
cc32abd4 | 913 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 914 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 915 | |
57eebdf3 | 916 | /* XXX: wait for a beacon first? */ |
675a0b04 | 917 | ieee80211_wake_queues_by_reason(&local->hw, |
445ea4e8 | 918 | IEEE80211_MAX_QUEUE_MAP, |
cc32abd4 | 919 | IEEE80211_QUEUE_STOP_REASON_CSA); |
7578d575 AN |
920 | |
921 | ieee80211_bss_info_change_notify(sdata, changed); | |
922 | ||
77fdaa12 | 923 | out: |
7578d575 | 924 | sdata->vif.csa_active = false; |
77fdaa12 | 925 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
8d61ffa5 | 926 | sdata_unlock(sdata); |
cc32abd4 JB |
927 | } |
928 | ||
5ce6e438 JB |
929 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
930 | { | |
55de908a JB |
931 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
932 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
933 | |
934 | trace_api_chswitch_done(sdata, success); | |
935 | if (!success) { | |
882a7c69 JB |
936 | sdata_info(sdata, |
937 | "driver channel switch failed, disconnecting\n"); | |
938 | ieee80211_queue_work(&sdata->local->hw, | |
939 | &ifmgd->csa_connection_drop_work); | |
940 | } else { | |
941 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 942 | } |
5ce6e438 JB |
943 | } |
944 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
945 | ||
cc32abd4 JB |
946 | static void ieee80211_chswitch_timer(unsigned long data) |
947 | { | |
948 | struct ieee80211_sub_if_data *sdata = | |
949 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 950 | |
9b7d72c1 | 951 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
952 | } |
953 | ||
37799e52 | 954 | static void |
4a3cb702 | 955 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
04a161f4 JB |
956 | u64 timestamp, struct ieee802_11_elems *elems, |
957 | bool beacon) | |
cc32abd4 | 958 | { |
b4f286a1 | 959 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 960 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 961 | struct cfg80211_bss *cbss = ifmgd->associated; |
55de908a | 962 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 963 | enum ieee80211_band current_band; |
c0f17eb9 | 964 | struct ieee80211_csa_ie csa_ie; |
e6b7cde4 | 965 | int res; |
cc32abd4 | 966 | |
8d61ffa5 | 967 | sdata_assert_lock(sdata); |
77fdaa12 | 968 | |
37799e52 | 969 | if (!cbss) |
cc32abd4 JB |
970 | return; |
971 | ||
b4f286a1 | 972 | if (local->scanning) |
cc32abd4 JB |
973 | return; |
974 | ||
37799e52 | 975 | /* disregard subsequent announcements if we are already processing */ |
cc32abd4 JB |
976 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) |
977 | return; | |
978 | ||
e6b7cde4 | 979 | current_band = cbss->channel->band; |
c0f17eb9 | 980 | memset(&csa_ie, 0, sizeof(csa_ie)); |
e6b7cde4 SW |
981 | res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band, |
982 | ifmgd->flags, | |
c0f17eb9 | 983 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 984 | if (res < 0) |
b4f286a1 | 985 | ieee80211_queue_work(&local->hw, |
882a7c69 | 986 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 987 | if (res) |
cc32abd4 | 988 | return; |
cd64f2a9 | 989 | |
c0f17eb9 | 990 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
991 | IEEE80211_CHAN_DISABLED)) { |
992 | sdata_info(sdata, | |
993 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 994 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
995 | csa_ie.chandef.chan->center_freq, |
996 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
997 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
998 | ieee80211_queue_work(&local->hw, |
999 | &ifmgd->csa_connection_drop_work); | |
1000 | return; | |
1001 | } | |
1002 | ||
57eebdf3 | 1003 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; |
7578d575 | 1004 | sdata->vif.csa_active = true; |
57eebdf3 | 1005 | |
7578d575 | 1006 | mutex_lock(&local->chanctx_mtx); |
b4f286a1 | 1007 | if (local->use_chanctx) { |
7578d575 AN |
1008 | u32 num_chanctx = 0; |
1009 | list_for_each_entry(chanctx, &local->chanctx_list, list) | |
1010 | num_chanctx++; | |
1011 | ||
1012 | if (num_chanctx > 1 || | |
1013 | !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) { | |
1014 | sdata_info(sdata, | |
1015 | "not handling chan-switch with channel contexts\n"); | |
1016 | ieee80211_queue_work(&local->hw, | |
1017 | &ifmgd->csa_connection_drop_work); | |
1018 | mutex_unlock(&local->chanctx_mtx); | |
1019 | return; | |
1020 | } | |
55de908a JB |
1021 | } |
1022 | ||
55de908a | 1023 | if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { |
7578d575 AN |
1024 | ieee80211_queue_work(&local->hw, |
1025 | &ifmgd->csa_connection_drop_work); | |
b4f286a1 | 1026 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1027 | return; |
1028 | } | |
1029 | chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), | |
1030 | struct ieee80211_chanctx, conf); | |
1031 | if (chanctx->refcount > 1) { | |
1032 | sdata_info(sdata, | |
1033 | "channel switch with multiple interfaces on the same channel, disconnecting\n"); | |
b4f286a1 | 1034 | ieee80211_queue_work(&local->hw, |
55de908a | 1035 | &ifmgd->csa_connection_drop_work); |
b4f286a1 | 1036 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1037 | return; |
1038 | } | |
b4f286a1 | 1039 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1040 | |
33787fc4 | 1041 | sdata->csa_chandef = csa_ie.chandef; |
55de908a | 1042 | |
c0f17eb9 | 1043 | if (csa_ie.mode) |
b4f286a1 | 1044 | ieee80211_stop_queues_by_reason(&local->hw, |
445ea4e8 | 1045 | IEEE80211_MAX_QUEUE_MAP, |
57eebdf3 JB |
1046 | IEEE80211_QUEUE_STOP_REASON_CSA); |
1047 | ||
b4f286a1 | 1048 | if (local->ops->channel_switch) { |
5ce6e438 | 1049 | /* use driver's channel switch callback */ |
57eebdf3 JB |
1050 | struct ieee80211_channel_switch ch_switch = { |
1051 | .timestamp = timestamp, | |
c0f17eb9 CYY |
1052 | .block_tx = csa_ie.mode, |
1053 | .chandef = csa_ie.chandef, | |
1054 | .count = csa_ie.count, | |
57eebdf3 JB |
1055 | }; |
1056 | ||
b4f286a1 | 1057 | drv_channel_switch(local, &ch_switch); |
5ce6e438 JB |
1058 | return; |
1059 | } | |
1060 | ||
1061 | /* channel switch handled in software */ | |
c0f17eb9 | 1062 | if (csa_ie.count <= 1) |
b4f286a1 | 1063 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1064 | else |
cc32abd4 | 1065 | mod_timer(&ifmgd->chswitch_timer, |
c0f17eb9 | 1066 | TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval)); |
cc32abd4 JB |
1067 | } |
1068 | ||
1ea6f9c0 JB |
1069 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1070 | struct ieee80211_channel *channel, | |
1071 | const u8 *country_ie, u8 country_ie_len, | |
1072 | const u8 *pwr_constr_elem) | |
cc32abd4 | 1073 | { |
04b7b2ff JB |
1074 | struct ieee80211_country_ie_triplet *triplet; |
1075 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
1076 | int i, chan_pwr, chan_increment, new_ap_level; | |
1077 | bool have_chan_pwr = false; | |
cc32abd4 | 1078 | |
04b7b2ff JB |
1079 | /* Invalid IE */ |
1080 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 1081 | return 0; |
cc32abd4 | 1082 | |
04b7b2ff JB |
1083 | triplet = (void *)(country_ie + 3); |
1084 | country_ie_len -= 3; | |
1085 | ||
1086 | switch (channel->band) { | |
1087 | default: | |
1088 | WARN_ON_ONCE(1); | |
1089 | /* fall through */ | |
1090 | case IEEE80211_BAND_2GHZ: | |
1091 | case IEEE80211_BAND_60GHZ: | |
1092 | chan_increment = 1; | |
1093 | break; | |
1094 | case IEEE80211_BAND_5GHZ: | |
1095 | chan_increment = 4; | |
1096 | break; | |
cc32abd4 | 1097 | } |
04b7b2ff JB |
1098 | |
1099 | /* find channel */ | |
1100 | while (country_ie_len >= 3) { | |
1101 | u8 first_channel = triplet->chans.first_channel; | |
1102 | ||
1103 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1104 | goto next; | |
1105 | ||
1106 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1107 | if (first_channel + i * chan_increment == chan) { | |
1108 | have_chan_pwr = true; | |
1109 | chan_pwr = triplet->chans.max_power; | |
1110 | break; | |
1111 | } | |
1112 | } | |
1113 | if (have_chan_pwr) | |
1114 | break; | |
1115 | ||
1116 | next: | |
1117 | triplet++; | |
1118 | country_ie_len -= 3; | |
1119 | } | |
1120 | ||
1121 | if (!have_chan_pwr) | |
1ea6f9c0 | 1122 | return 0; |
04b7b2ff JB |
1123 | |
1124 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
1125 | ||
1ea6f9c0 JB |
1126 | if (sdata->ap_power_level == new_ap_level) |
1127 | return 0; | |
04b7b2ff JB |
1128 | |
1129 | sdata_info(sdata, | |
1130 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1131 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
1132 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
1133 | sdata->ap_power_level = new_ap_level; |
1134 | if (__ieee80211_recalc_txpower(sdata)) | |
1135 | return BSS_CHANGED_TXPOWER; | |
1136 | return 0; | |
cc32abd4 JB |
1137 | } |
1138 | ||
965bedad JB |
1139 | /* powersave */ |
1140 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1141 | struct ieee80211_sub_if_data *sdata) | |
1142 | { | |
1143 | struct ieee80211_conf *conf = &local->hw.conf; | |
1144 | ||
d5edaedc JB |
1145 | /* |
1146 | * If we are scanning right now then the parameters will | |
1147 | * take effect when scan finishes. | |
1148 | */ | |
fbe9c429 | 1149 | if (local->scanning) |
d5edaedc JB |
1150 | return; |
1151 | ||
965bedad JB |
1152 | if (conf->dynamic_ps_timeout > 0 && |
1153 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1154 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1155 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1156 | } else { | |
1157 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1158 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1159 | |
2a13052f JO |
1160 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1161 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1162 | return; | |
1163 | ||
1164 | conf->flags |= IEEE80211_CONF_PS; | |
1165 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1166 | } |
1167 | } | |
1168 | ||
1169 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1170 | { | |
1171 | struct ieee80211_conf *conf = &local->hw.conf; | |
1172 | ||
1173 | if (local->ps_sdata) { | |
965bedad JB |
1174 | ieee80211_enable_ps(local, local->ps_sdata); |
1175 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1176 | conf->flags &= ~IEEE80211_CONF_PS; | |
1177 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1178 | del_timer_sync(&local->dynamic_ps_timer); | |
1179 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1180 | } | |
1181 | } | |
1182 | ||
808118cb JY |
1183 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1184 | { | |
1185 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1186 | struct sta_info *sta = NULL; | |
c2c98fde | 1187 | bool authorized = false; |
808118cb JY |
1188 | |
1189 | if (!mgd->powersave) | |
1190 | return false; | |
1191 | ||
05cb9108 JB |
1192 | if (mgd->broken_ap) |
1193 | return false; | |
1194 | ||
808118cb JY |
1195 | if (!mgd->associated) |
1196 | return false; | |
1197 | ||
392b9ffb | 1198 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1199 | return false; |
1200 | ||
989c6505 | 1201 | if (!mgd->have_beacon) |
ce857888 AB |
1202 | return false; |
1203 | ||
808118cb JY |
1204 | rcu_read_lock(); |
1205 | sta = sta_info_get(sdata, mgd->bssid); | |
1206 | if (sta) | |
c2c98fde | 1207 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1208 | rcu_read_unlock(); |
1209 | ||
c2c98fde | 1210 | return authorized; |
808118cb JY |
1211 | } |
1212 | ||
965bedad | 1213 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1214 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1215 | { |
1216 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1217 | int count = 0; | |
195e294d | 1218 | int timeout; |
965bedad JB |
1219 | |
1220 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1221 | local->ps_sdata = NULL; | |
1222 | return; | |
1223 | } | |
1224 | ||
1225 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1226 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1227 | continue; |
8c7914de RM |
1228 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1229 | /* If an AP vif is found, then disable PS | |
1230 | * by setting the count to zero thereby setting | |
1231 | * ps_sdata to NULL. | |
1232 | */ | |
1233 | count = 0; | |
1234 | break; | |
1235 | } | |
965bedad JB |
1236 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1237 | continue; | |
1238 | found = sdata; | |
1239 | count++; | |
1240 | } | |
1241 | ||
808118cb | 1242 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1243 | s32 beaconint_us; |
1244 | ||
1245 | if (latency < 0) | |
ed77134b | 1246 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1247 | |
1248 | beaconint_us = ieee80211_tu_to_usec( | |
1249 | found->vif.bss_conf.beacon_int); | |
1250 | ||
ff616381 | 1251 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1252 | if (timeout < 0) { |
1253 | /* | |
ff616381 JO |
1254 | * Go to full PSM if the user configures a very low |
1255 | * latency requirement. | |
0ab82b04 EP |
1256 | * The 2000 second value is there for compatibility |
1257 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1258 | * with real values. | |
195e294d | 1259 | */ |
0ab82b04 EP |
1260 | if (latency > (1900 * USEC_PER_MSEC) && |
1261 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1262 | timeout = 0; |
ff616381 JO |
1263 | else |
1264 | timeout = 100; | |
195e294d | 1265 | } |
09b85568 | 1266 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1267 | |
04fe2037 | 1268 | if (beaconint_us > latency) { |
10f644a4 | 1269 | local->ps_sdata = NULL; |
04fe2037 | 1270 | } else { |
04fe2037 | 1271 | int maxslp = 1; |
826262c3 | 1272 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1273 | |
1274 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1275 | if (!dtimper) | |
1276 | dtimper = 1; | |
1277 | else if (dtimper > 1) | |
04fe2037 JB |
1278 | maxslp = min_t(int, dtimper, |
1279 | latency / beaconint_us); | |
1280 | ||
9ccebe61 | 1281 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1282 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1283 | local->ps_sdata = found; |
04fe2037 | 1284 | } |
10f644a4 | 1285 | } else { |
965bedad | 1286 | local->ps_sdata = NULL; |
10f644a4 | 1287 | } |
965bedad JB |
1288 | |
1289 | ieee80211_change_ps(local); | |
1290 | } | |
1291 | ||
ab095877 EP |
1292 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1293 | { | |
1294 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1295 | ||
1296 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1297 | sdata->vif.bss_conf.ps = ps_allowed; | |
1298 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1299 | } | |
1300 | } | |
1301 | ||
965bedad JB |
1302 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1303 | { | |
1304 | struct ieee80211_local *local = | |
1305 | container_of(work, struct ieee80211_local, | |
1306 | dynamic_ps_disable_work); | |
1307 | ||
1308 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1309 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1310 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1311 | } | |
1312 | ||
1313 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1314 | IEEE80211_MAX_QUEUE_MAP, |
965bedad JB |
1315 | IEEE80211_QUEUE_STOP_REASON_PS); |
1316 | } | |
1317 | ||
1318 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1319 | { | |
1320 | struct ieee80211_local *local = | |
1321 | container_of(work, struct ieee80211_local, | |
1322 | dynamic_ps_enable_work); | |
1323 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1324 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1325 | unsigned long flags; |
1326 | int q; | |
965bedad JB |
1327 | |
1328 | /* can only happen when PS was just disabled anyway */ | |
1329 | if (!sdata) | |
1330 | return; | |
1331 | ||
5e34069c CL |
1332 | ifmgd = &sdata->u.mgd; |
1333 | ||
965bedad JB |
1334 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1335 | return; | |
1336 | ||
09b85568 | 1337 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1338 | /* don't enter PS if TX frames are pending */ |
1339 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1340 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1341 | msecs_to_jiffies( | |
1342 | local->hw.conf.dynamic_ps_timeout)); | |
1343 | return; | |
1344 | } | |
77b7023a AN |
1345 | |
1346 | /* | |
1347 | * transmission can be stopped by others which leads to | |
1348 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1349 | * is not the actual idle state. | |
1350 | */ | |
1351 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1352 | for (q = 0; q < local->hw.queues; q++) { | |
1353 | if (local->queue_stop_reasons[q]) { | |
1354 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1355 | flags); | |
1356 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1357 | msecs_to_jiffies( | |
1358 | local->hw.conf.dynamic_ps_timeout)); | |
1359 | return; | |
1360 | } | |
1361 | } | |
1362 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1363 | } |
1ddc2867 | 1364 | |
375177bf | 1365 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1366 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1367 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1368 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1369 | msecs_to_jiffies( | |
1370 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1371 | } else { |
e8306f98 VN |
1372 | ieee80211_send_nullfunc(local, sdata, 1); |
1373 | /* Flush to get the tx status of nullfunc frame */ | |
39ecc01d | 1374 | ieee80211_flush_queues(local, sdata); |
e8306f98 | 1375 | } |
f3e85b9e VN |
1376 | } |
1377 | ||
2a13052f JO |
1378 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1379 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1380 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1381 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1382 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1383 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1384 | } | |
965bedad JB |
1385 | } |
1386 | ||
1387 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1388 | { | |
1389 | struct ieee80211_local *local = (void *) data; | |
1390 | ||
78f1a8b7 | 1391 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1392 | return; |
1393 | ||
42935eca | 1394 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1395 | } |
1396 | ||
164eb02d SW |
1397 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1398 | { | |
1399 | struct delayed_work *delayed_work = | |
1400 | container_of(work, struct delayed_work, work); | |
1401 | struct ieee80211_sub_if_data *sdata = | |
1402 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1403 | dfs_cac_timer_work); | |
d2859df5 | 1404 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1405 | |
34a3740d JB |
1406 | mutex_lock(&sdata->local->mtx); |
1407 | if (sdata->wdev.cac_started) { | |
1408 | ieee80211_vif_release_channel(sdata); | |
1409 | cfg80211_cac_event(sdata->dev, &chandef, | |
1410 | NL80211_RADAR_CAC_FINISHED, | |
1411 | GFP_KERNEL); | |
1412 | } | |
1413 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1414 | } |
1415 | ||
60f8b39c | 1416 | /* MLME */ |
7d25745d | 1417 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1418 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1419 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1420 | { |
f0706e82 | 1421 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1422 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1423 | size_t left; |
1424 | int count; | |
4a3cb702 JB |
1425 | const u8 *pos; |
1426 | u8 uapsd_queues = 0; | |
f0706e82 | 1427 | |
e1b3ec1a | 1428 | if (!local->ops->conf_tx) |
7d25745d | 1429 | return false; |
e1b3ec1a | 1430 | |
32c5057b | 1431 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1432 | return false; |
3434fbd3 JB |
1433 | |
1434 | if (!wmm_param) | |
7d25745d | 1435 | return false; |
3434fbd3 | 1436 | |
f0706e82 | 1437 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1438 | return false; |
ab13315a KV |
1439 | |
1440 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1441 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1442 | |
f0706e82 | 1443 | count = wmm_param[6] & 0x0f; |
46900298 | 1444 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1445 | return false; |
46900298 | 1446 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1447 | |
1448 | pos = wmm_param + 8; | |
1449 | left = wmm_param_len - 8; | |
1450 | ||
1451 | memset(¶ms, 0, sizeof(params)); | |
1452 | ||
00e96dec | 1453 | sdata->wmm_acm = 0; |
f0706e82 JB |
1454 | for (; left >= 4; left -= 4, pos += 4) { |
1455 | int aci = (pos[0] >> 5) & 0x03; | |
1456 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1457 | bool uapsd = false; |
f0706e82 JB |
1458 | int queue; |
1459 | ||
1460 | switch (aci) { | |
0eeb59fe | 1461 | case 1: /* AC_BK */ |
e100bb64 | 1462 | queue = 3; |
988c0f72 | 1463 | if (acm) |
00e96dec | 1464 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1465 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1466 | uapsd = true; | |
f0706e82 | 1467 | break; |
0eeb59fe | 1468 | case 2: /* AC_VI */ |
e100bb64 | 1469 | queue = 1; |
988c0f72 | 1470 | if (acm) |
00e96dec | 1471 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1472 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1473 | uapsd = true; | |
f0706e82 | 1474 | break; |
0eeb59fe | 1475 | case 3: /* AC_VO */ |
e100bb64 | 1476 | queue = 0; |
988c0f72 | 1477 | if (acm) |
00e96dec | 1478 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1479 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1480 | uapsd = true; | |
f0706e82 | 1481 | break; |
0eeb59fe | 1482 | case 0: /* AC_BE */ |
f0706e82 | 1483 | default: |
e100bb64 | 1484 | queue = 2; |
988c0f72 | 1485 | if (acm) |
00e96dec | 1486 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1487 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1488 | uapsd = true; | |
f0706e82 JB |
1489 | break; |
1490 | } | |
1491 | ||
1492 | params.aifs = pos[0] & 0x0f; | |
1493 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1494 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1495 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1496 | params.acm = acm; |
ab13315a KV |
1497 | params.uapsd = uapsd; |
1498 | ||
bdcbd8e0 JB |
1499 | mlme_dbg(sdata, |
1500 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1501 | queue, aci, acm, | |
1502 | params.aifs, params.cw_min, params.cw_max, | |
1503 | params.txop, params.uapsd); | |
f6f3def3 EP |
1504 | sdata->tx_conf[queue] = params; |
1505 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1506 | sdata_err(sdata, |
1507 | "failed to set TX queue parameters for queue %d\n", | |
1508 | queue); | |
f0706e82 | 1509 | } |
e1b3ec1a SG |
1510 | |
1511 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1512 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1513 | return true; |
f0706e82 JB |
1514 | } |
1515 | ||
925e64c3 SG |
1516 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1517 | { | |
1518 | lockdep_assert_held(&sdata->local->mtx); | |
1519 | ||
392b9ffb | 1520 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1521 | ieee80211_run_deferred_scan(sdata->local); |
1522 | } | |
1523 | ||
1524 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1525 | { | |
1526 | mutex_lock(&sdata->local->mtx); | |
1527 | __ieee80211_stop_poll(sdata); | |
1528 | mutex_unlock(&sdata->local->mtx); | |
1529 | } | |
1530 | ||
7a5158ef JB |
1531 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1532 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1533 | { |
bda3933a | 1534 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1535 | u32 changed = 0; |
7a5158ef JB |
1536 | bool use_protection; |
1537 | bool use_short_preamble; | |
1538 | bool use_short_slot; | |
1539 | ||
1540 | if (erp_valid) { | |
1541 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1542 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1543 | } else { | |
1544 | use_protection = false; | |
1545 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1546 | } | |
1547 | ||
1548 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1549 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1550 | use_short_slot = true; |
5628221c | 1551 | |
471b3efd | 1552 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1553 | bss_conf->use_cts_prot = use_protection; |
1554 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1555 | } |
7e9ed188 | 1556 | |
d43c7b37 | 1557 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1558 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1559 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1560 | } |
d9430a32 | 1561 | |
7a5158ef | 1562 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1563 | bss_conf->use_short_slot = use_short_slot; |
1564 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1565 | } |
1566 | ||
1567 | return changed; | |
1568 | } | |
1569 | ||
f698d856 | 1570 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1571 | struct cfg80211_bss *cbss, |
ae5eb026 | 1572 | u32 bss_info_changed) |
f0706e82 | 1573 | { |
0c1ad2ca | 1574 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1575 | struct ieee80211_local *local = sdata->local; |
68542962 | 1576 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1577 | |
ae5eb026 | 1578 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1579 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1580 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1581 | |
7ccc8bd7 | 1582 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1583 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1584 | |
0c1ad2ca JB |
1585 | sdata->u.mgd.associated = cbss; |
1586 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1587 | |
17e4ec14 JM |
1588 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1589 | ||
488dd7b5 | 1590 | if (sdata->vif.p2p) { |
9caf0364 | 1591 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1592 | |
9caf0364 JB |
1593 | rcu_read_lock(); |
1594 | ies = rcu_dereference(cbss->ies); | |
1595 | if (ies) { | |
9caf0364 JB |
1596 | int ret; |
1597 | ||
1598 | ret = cfg80211_get_p2p_attr( | |
1599 | ies->data, ies->len, | |
1600 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1601 | (u8 *) &bss_conf->p2p_noa_attr, |
1602 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1603 | if (ret >= 2) { |
67baf663 JD |
1604 | sdata->u.mgd.p2p_noa_index = |
1605 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1606 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1607 | } |
488dd7b5 | 1608 | } |
9caf0364 | 1609 | rcu_read_unlock(); |
488dd7b5 JB |
1610 | } |
1611 | ||
b291ba11 | 1612 | /* just to be sure */ |
925e64c3 | 1613 | ieee80211_stop_poll(sdata); |
b291ba11 | 1614 | |
9ac19a90 | 1615 | ieee80211_led_assoc(local, 1); |
9306102e | 1616 | |
989c6505 | 1617 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1618 | /* |
1619 | * If the AP is buggy we may get here with no DTIM period | |
1620 | * known, so assume it's 1 which is the only safe assumption | |
1621 | * in that case, although if the TIM IE is broken powersave | |
1622 | * probably just won't work at all. | |
1623 | */ | |
1624 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1625 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1626 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1627 | } else { |
817cee76 | 1628 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1629 | bss_conf->dtim_period = 0; |
826262c3 | 1630 | } |
e5b900d2 | 1631 | |
68542962 | 1632 | bss_conf->assoc = 1; |
9cef8737 | 1633 | |
a97c13c3 | 1634 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1635 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1636 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1637 | bss_info_changed |= BSS_CHANGED_CQM; |
1638 | ||
68542962 | 1639 | /* Enable ARP filtering */ |
0f19b41e | 1640 | if (bss_conf->arp_addr_cnt) |
68542962 | 1641 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1642 | |
ae5eb026 | 1643 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1644 | |
056508dc JB |
1645 | mutex_lock(&local->iflist_mtx); |
1646 | ieee80211_recalc_ps(local, -1); | |
1647 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1648 | |
04ecd257 | 1649 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1650 | ieee80211_recalc_ps_vif(sdata); |
1651 | ||
9ac19a90 | 1652 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1653 | } |
1654 | ||
e69e95db | 1655 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1656 | u16 stype, u16 reason, bool tx, |
1657 | u8 *frame_buf) | |
aa458d17 | 1658 | { |
46900298 | 1659 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1660 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1661 | u32 changed = 0; |
aa458d17 | 1662 | |
8d61ffa5 | 1663 | sdata_assert_lock(sdata); |
77fdaa12 | 1664 | |
37ad3888 JB |
1665 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1666 | return; | |
1667 | ||
b291ba11 JB |
1668 | if (WARN_ON(!ifmgd->associated)) |
1669 | return; | |
1670 | ||
79543d8e DS |
1671 | ieee80211_stop_poll(sdata); |
1672 | ||
77fdaa12 | 1673 | ifmgd->associated = NULL; |
aa458d17 TW |
1674 | netif_carrier_off(sdata->dev); |
1675 | ||
88bc40e8 EP |
1676 | /* |
1677 | * if we want to get out of ps before disassoc (why?) we have | |
1678 | * to do it before sending disassoc, as otherwise the null-packet | |
1679 | * won't be valid. | |
1680 | */ | |
1681 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1682 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1683 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1684 | } | |
1685 | local->ps_sdata = NULL; | |
1686 | ||
ab095877 EP |
1687 | /* disable per-vif ps */ |
1688 | ieee80211_recalc_ps_vif(sdata); | |
1689 | ||
f823981e EP |
1690 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1691 | if (tx) | |
39ecc01d | 1692 | ieee80211_flush_queues(local, sdata); |
f823981e | 1693 | |
37ad3888 JB |
1694 | /* deauthenticate/disassociate now */ |
1695 | if (tx || frame_buf) | |
88a9e31c EP |
1696 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1697 | reason, tx, frame_buf); | |
37ad3888 JB |
1698 | |
1699 | /* flush out frame */ | |
1700 | if (tx) | |
39ecc01d | 1701 | ieee80211_flush_queues(local, sdata); |
37ad3888 | 1702 | |
88a9e31c EP |
1703 | /* clear bssid only after building the needed mgmt frames */ |
1704 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1705 | ||
37ad3888 | 1706 | /* remove AP and TDLS peers */ |
d34ba216 | 1707 | sta_info_flush(sdata); |
37ad3888 JB |
1708 | |
1709 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1710 | changed |= ieee80211_reset_erp_info(sdata); |
1711 | ||
f5e5bf25 | 1712 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1713 | changed |= BSS_CHANGED_ASSOC; |
1714 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1715 | |
67baf663 JD |
1716 | ifmgd->p2p_noa_index = -1; |
1717 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
1718 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 1719 | |
dd5ecfea | 1720 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
1721 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1722 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
1723 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
1724 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 1725 | |
1ea6f9c0 | 1726 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1727 | |
520eb820 KV |
1728 | del_timer_sync(&local->dynamic_ps_timer); |
1729 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1730 | ||
68542962 | 1731 | /* Disable ARP filtering */ |
0f19b41e | 1732 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1733 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1734 | |
3abead59 JB |
1735 | sdata->vif.bss_conf.qos = false; |
1736 | changed |= BSS_CHANGED_QOS; | |
1737 | ||
0aaffa9b JB |
1738 | /* The BSSID (not really interesting) and HT changed */ |
1739 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1740 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1741 | |
3abead59 JB |
1742 | /* disassociated - set to defaults now */ |
1743 | ieee80211_set_wmm_default(sdata, false); | |
1744 | ||
b9dcf712 JB |
1745 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1746 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1747 | del_timer_sync(&sdata->u.mgd.timer); | |
1748 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 1749 | |
826262c3 | 1750 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
1751 | sdata->vif.bss_conf.beacon_rate = NULL; |
1752 | ||
989c6505 | 1753 | ifmgd->have_beacon = false; |
826262c3 | 1754 | |
028e8da0 | 1755 | ifmgd->flags = 0; |
34a3740d | 1756 | mutex_lock(&local->mtx); |
028e8da0 | 1757 | ieee80211_vif_release_channel(sdata); |
34a3740d | 1758 | mutex_unlock(&local->mtx); |
2475b1cc MS |
1759 | |
1760 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; | |
aa458d17 | 1761 | } |
f0706e82 | 1762 | |
3cf335d5 KV |
1763 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1764 | struct ieee80211_hdr *hdr) | |
1765 | { | |
1766 | /* | |
1767 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1768 | * from AP because we know that the connection is working both ways | |
1769 | * at that time. But multicast frames (and hence also beacons) must | |
1770 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1771 | * data idle periods for sending the periodic probe request to the |
1772 | * AP we're connected to. | |
3cf335d5 | 1773 | */ |
b291ba11 JB |
1774 | if (is_multicast_ether_addr(hdr->addr1)) |
1775 | return; | |
1776 | ||
be099e82 | 1777 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1778 | } |
f0706e82 | 1779 | |
4e5ff376 FF |
1780 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1781 | { | |
1782 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1783 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1784 | |
133d40f9 | 1785 | mutex_lock(&local->mtx); |
392b9ffb SG |
1786 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
1787 | goto out; | |
4e5ff376 | 1788 | |
925e64c3 | 1789 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1790 | |
1791 | mutex_lock(&local->iflist_mtx); | |
1792 | ieee80211_recalc_ps(local, -1); | |
1793 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1794 | |
1795 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1796 | goto out; |
4e5ff376 FF |
1797 | |
1798 | /* | |
1799 | * We've received a probe response, but are not sure whether | |
1800 | * we have or will be receiving any beacons or data, so let's | |
1801 | * schedule the timers again, just in case. | |
1802 | */ | |
1803 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1804 | ||
1805 | mod_timer(&ifmgd->conn_mon_timer, | |
1806 | round_jiffies_up(jiffies + | |
1807 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1808 | out: |
133d40f9 | 1809 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1810 | } |
1811 | ||
1812 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1813 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1814 | { |
75706d0e | 1815 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1816 | return; |
1817 | ||
4e5ff376 FF |
1818 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
1819 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 1820 | if (ack) |
cab1c7fd | 1821 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
1822 | else |
1823 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 1824 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 1825 | return; |
4e5ff376 | 1826 | } |
cab1c7fd WD |
1827 | |
1828 | if (ack) | |
1829 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1830 | } |
1831 | ||
a43abf29 ML |
1832 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1833 | { | |
1834 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1835 | const u8 *ssid; | |
f01a067d | 1836 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1837 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
1838 | |
1839 | /* | |
1840 | * Try sending broadcast probe requests for the last three | |
1841 | * probe requests after the first ones failed since some | |
1842 | * buggy APs only support broadcast probe requests. | |
1843 | */ | |
1844 | if (ifmgd->probe_send_count >= unicast_limit) | |
1845 | dst = NULL; | |
a43abf29 | 1846 | |
4e5ff376 FF |
1847 | /* |
1848 | * When the hardware reports an accurate Tx ACK status, it's | |
1849 | * better to send a nullfunc frame instead of a probe request, | |
1850 | * as it will kick us off the AP quickly if we aren't associated | |
1851 | * anymore. The timeout will be reset if the frame is ACKed by | |
1852 | * the AP. | |
1853 | */ | |
992e68bf SD |
1854 | ifmgd->probe_send_count++; |
1855 | ||
04ac3c0e FF |
1856 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
1857 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 1858 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 1859 | } else { |
88c868c4 SG |
1860 | int ssid_len; |
1861 | ||
9caf0364 | 1862 | rcu_read_lock(); |
4e5ff376 | 1863 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
1864 | if (WARN_ON_ONCE(ssid == NULL)) |
1865 | ssid_len = 0; | |
1866 | else | |
1867 | ssid_len = ssid[1]; | |
1868 | ||
1869 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 1870 | 0, (u32) -1, true, 0, |
55de908a | 1871 | ifmgd->associated->channel, false); |
9caf0364 | 1872 | rcu_read_unlock(); |
4e5ff376 | 1873 | } |
a43abf29 | 1874 | |
180205bd | 1875 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 1876 | run_again(sdata, ifmgd->probe_timeout); |
f69b9c79 | 1877 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
39ecc01d | 1878 | ieee80211_flush_queues(sdata->local, sdata); |
a43abf29 ML |
1879 | } |
1880 | ||
b291ba11 JB |
1881 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
1882 | bool beacon) | |
04de8381 | 1883 | { |
04de8381 | 1884 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 1885 | bool already = false; |
34bfc411 | 1886 | |
9607e6b6 | 1887 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
1888 | return; |
1889 | ||
8d61ffa5 | 1890 | sdata_lock(sdata); |
77fdaa12 JB |
1891 | |
1892 | if (!ifmgd->associated) | |
1893 | goto out; | |
1894 | ||
133d40f9 SG |
1895 | mutex_lock(&sdata->local->mtx); |
1896 | ||
1897 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
1898 | mutex_unlock(&sdata->local->mtx); | |
1899 | goto out; | |
1900 | } | |
1901 | ||
a13fbe54 | 1902 | if (beacon) { |
bdcbd8e0 | 1903 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
1904 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
1905 | beacon_loss_count); | |
bdcbd8e0 | 1906 | |
a13fbe54 BG |
1907 | ieee80211_cqm_rssi_notify(&sdata->vif, |
1908 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, | |
1909 | GFP_KERNEL); | |
1910 | } | |
04de8381 | 1911 | |
b291ba11 JB |
1912 | /* |
1913 | * The driver/our work has already reported this event or the | |
1914 | * connection monitoring has kicked in and we have already sent | |
1915 | * a probe request. Or maybe the AP died and the driver keeps | |
1916 | * reporting until we disassociate... | |
1917 | * | |
1918 | * In either case we have to ignore the current call to this | |
1919 | * function (except for setting the correct probe reason bit) | |
1920 | * because otherwise we would reset the timer every time and | |
1921 | * never check whether we received a probe response! | |
1922 | */ | |
392b9ffb | 1923 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
1924 | already = true; |
1925 | ||
12b5f34d EP |
1926 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
1927 | ||
133d40f9 SG |
1928 | mutex_unlock(&sdata->local->mtx); |
1929 | ||
b291ba11 JB |
1930 | if (already) |
1931 | goto out; | |
1932 | ||
4e751843 JB |
1933 | mutex_lock(&sdata->local->iflist_mtx); |
1934 | ieee80211_recalc_ps(sdata->local, -1); | |
1935 | mutex_unlock(&sdata->local->iflist_mtx); | |
1936 | ||
a43abf29 ML |
1937 | ifmgd->probe_send_count = 0; |
1938 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 1939 | out: |
8d61ffa5 | 1940 | sdata_unlock(sdata); |
04de8381 KV |
1941 | } |
1942 | ||
a619a4c0 JO |
1943 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
1944 | struct ieee80211_vif *vif) | |
1945 | { | |
1946 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1947 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 1948 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
1949 | struct sk_buff *skb; |
1950 | const u8 *ssid; | |
88c868c4 | 1951 | int ssid_len; |
a619a4c0 JO |
1952 | |
1953 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1954 | return NULL; | |
1955 | ||
8d61ffa5 | 1956 | sdata_assert_lock(sdata); |
a619a4c0 | 1957 | |
d9b3b28b EP |
1958 | if (ifmgd->associated) |
1959 | cbss = ifmgd->associated; | |
1960 | else if (ifmgd->auth_data) | |
1961 | cbss = ifmgd->auth_data->bss; | |
1962 | else if (ifmgd->assoc_data) | |
1963 | cbss = ifmgd->assoc_data->bss; | |
1964 | else | |
a619a4c0 JO |
1965 | return NULL; |
1966 | ||
9caf0364 | 1967 | rcu_read_lock(); |
d9b3b28b | 1968 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
1969 | if (WARN_ON_ONCE(ssid == NULL)) |
1970 | ssid_len = 0; | |
1971 | else | |
1972 | ssid_len = ssid[1]; | |
1973 | ||
d9b3b28b | 1974 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 1975 | (u32) -1, cbss->channel, |
6b77863b | 1976 | ssid + 2, ssid_len, |
85a237fe | 1977 | NULL, 0, true); |
9caf0364 | 1978 | rcu_read_unlock(); |
a619a4c0 JO |
1979 | |
1980 | return skb; | |
1981 | } | |
1982 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
1983 | ||
eef9e54c | 1984 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 JO |
1985 | { |
1986 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
6ae16775 | 1987 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 1988 | |
8d61ffa5 | 1989 | sdata_lock(sdata); |
1e4dcd01 | 1990 | if (!ifmgd->associated) { |
8d61ffa5 | 1991 | sdata_unlock(sdata); |
1e4dcd01 JO |
1992 | return; |
1993 | } | |
1994 | ||
37ad3888 JB |
1995 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
1996 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 1997 | true, frame_buf); |
882a7c69 | 1998 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
7578d575 | 1999 | sdata->vif.csa_active = false; |
5b36ebd8 | 2000 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
445ea4e8 | 2001 | IEEE80211_MAX_QUEUE_MAP, |
5b36ebd8 | 2002 | IEEE80211_QUEUE_STOP_REASON_CSA); |
7da7cc1d | 2003 | |
6ff57cf8 JB |
2004 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
2005 | IEEE80211_DEAUTH_FRAME_LEN); | |
8d61ffa5 | 2006 | sdata_unlock(sdata); |
1e4dcd01 JO |
2007 | } |
2008 | ||
cc74c0c7 | 2009 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2010 | { |
2011 | struct ieee80211_sub_if_data *sdata = | |
2012 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2013 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2014 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2015 | struct sta_info *sta; | |
2016 | ||
2017 | if (ifmgd->associated) { | |
30fa9047 | 2018 | rcu_read_lock(); |
a85e1d55 PS |
2019 | sta = sta_info_get(sdata, ifmgd->bssid); |
2020 | if (sta) | |
2021 | sta->beacon_loss_count++; | |
30fa9047 | 2022 | rcu_read_unlock(); |
a85e1d55 | 2023 | } |
b291ba11 | 2024 | |
682bd38b | 2025 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2026 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2027 | ifmgd->bssid); | |
eef9e54c | 2028 | __ieee80211_disconnect(sdata); |
882a7c69 | 2029 | } else { |
1e4dcd01 | 2030 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2031 | } |
2032 | } | |
2033 | ||
2034 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2035 | { | |
2036 | struct ieee80211_sub_if_data *sdata = | |
2037 | container_of(work, struct ieee80211_sub_if_data, | |
2038 | u.mgd.csa_connection_drop_work); | |
2039 | ||
eef9e54c | 2040 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2041 | } |
2042 | ||
04de8381 KV |
2043 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2044 | { | |
2045 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2046 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2047 | |
b5878a2d JB |
2048 | trace_api_beacon_loss(sdata); |
2049 | ||
682bd38b | 2050 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2051 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2052 | } |
2053 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2054 | ||
1e4dcd01 JO |
2055 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2056 | { | |
2057 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2058 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2059 | ||
b5878a2d JB |
2060 | trace_api_connection_loss(sdata); |
2061 | ||
682bd38b | 2062 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2063 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2064 | } | |
2065 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2066 | ||
2067 | ||
66e67e41 JB |
2068 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2069 | bool assoc) | |
2070 | { | |
2071 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2072 | ||
8d61ffa5 | 2073 | sdata_assert_lock(sdata); |
66e67e41 | 2074 | |
66e67e41 JB |
2075 | if (!assoc) { |
2076 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
2077 | ||
2078 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2079 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2080 | sdata->u.mgd.flags = 0; |
34a3740d | 2081 | mutex_lock(&sdata->local->mtx); |
55de908a | 2082 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2083 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2084 | } |
2085 | ||
5b112d3d | 2086 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2087 | kfree(auth_data); |
2088 | sdata->u.mgd.auth_data = NULL; | |
2089 | } | |
2090 | ||
2091 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2092 | struct ieee80211_mgmt *mgmt, size_t len) | |
2093 | { | |
1672c0e3 | 2094 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2095 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2096 | u8 *pos; | |
2097 | struct ieee802_11_elems elems; | |
1672c0e3 | 2098 | u32 tx_flags = 0; |
66e67e41 JB |
2099 | |
2100 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2101 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2102 | if (!elems.challenge) |
2103 | return; | |
2104 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2105 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2106 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2107 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2108 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2109 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2110 | elems.challenge - 2, elems.challenge_len + 2, |
2111 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2112 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2113 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2114 | } |
2115 | ||
8d61ffa5 JB |
2116 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2117 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2118 | { |
2119 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2120 | u8 bssid[ETH_ALEN]; | |
2121 | u16 auth_alg, auth_transaction, status_code; | |
2122 | struct sta_info *sta; | |
2123 | ||
8d61ffa5 | 2124 | sdata_assert_lock(sdata); |
66e67e41 JB |
2125 | |
2126 | if (len < 24 + 6) | |
8d61ffa5 | 2127 | return; |
66e67e41 JB |
2128 | |
2129 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2130 | return; |
66e67e41 JB |
2131 | |
2132 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2133 | ||
b203ca39 | 2134 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2135 | return; |
66e67e41 JB |
2136 | |
2137 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2138 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2139 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2140 | ||
2141 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2142 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2143 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2144 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2145 | auth_transaction, | |
2146 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2147 | return; |
0f4126e8 | 2148 | } |
66e67e41 JB |
2149 | |
2150 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2151 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2152 | mgmt->sa, status_code); | |
dac211ec | 2153 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2154 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2155 | return; |
66e67e41 JB |
2156 | } |
2157 | ||
2158 | switch (ifmgd->auth_data->algorithm) { | |
2159 | case WLAN_AUTH_OPEN: | |
2160 | case WLAN_AUTH_LEAP: | |
2161 | case WLAN_AUTH_FT: | |
6b8ece3a | 2162 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2163 | break; |
2164 | case WLAN_AUTH_SHARED_KEY: | |
2165 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2166 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2167 | /* need another frame */ | |
8d61ffa5 | 2168 | return; |
66e67e41 JB |
2169 | } |
2170 | break; | |
2171 | default: | |
2172 | WARN_ONCE(1, "invalid auth alg %d", | |
2173 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2174 | return; |
66e67e41 JB |
2175 | } |
2176 | ||
bdcbd8e0 | 2177 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2178 | ifmgd->auth_data->done = true; |
2179 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2180 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2181 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2182 | |
6b8ece3a JM |
2183 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2184 | ifmgd->auth_data->expected_transaction != 2) { | |
2185 | /* | |
2186 | * Report auth frame to user space for processing since another | |
2187 | * round of Authentication frames is still needed. | |
2188 | */ | |
6ff57cf8 | 2189 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2190 | return; |
6b8ece3a JM |
2191 | } |
2192 | ||
66e67e41 JB |
2193 | /* move station state to auth */ |
2194 | mutex_lock(&sdata->local->sta_mtx); | |
2195 | sta = sta_info_get(sdata, bssid); | |
2196 | if (!sta) { | |
2197 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2198 | goto out_err; | |
2199 | } | |
2200 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2201 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2202 | goto out_err; |
2203 | } | |
2204 | mutex_unlock(&sdata->local->sta_mtx); | |
2205 | ||
6ff57cf8 | 2206 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2207 | return; |
66e67e41 JB |
2208 | out_err: |
2209 | mutex_unlock(&sdata->local->sta_mtx); | |
2210 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2211 | } |
2212 | ||
2213 | ||
8d61ffa5 JB |
2214 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2215 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2216 | { |
46900298 | 2217 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2218 | const u8 *bssid = NULL; |
f0706e82 JB |
2219 | u16 reason_code; |
2220 | ||
8d61ffa5 | 2221 | sdata_assert_lock(sdata); |
66e67e41 | 2222 | |
f4ea83dd | 2223 | if (len < 24 + 2) |
8d61ffa5 | 2224 | return; |
f0706e82 | 2225 | |
66e67e41 | 2226 | if (!ifmgd->associated || |
b203ca39 | 2227 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2228 | return; |
77fdaa12 | 2229 | |
0c1ad2ca | 2230 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2231 | |
2232 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2233 | ||
bdcbd8e0 JB |
2234 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n", |
2235 | bssid, reason_code); | |
77fdaa12 | 2236 | |
37ad3888 JB |
2237 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2238 | ||
6ff57cf8 | 2239 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2240 | } |
2241 | ||
2242 | ||
8d61ffa5 JB |
2243 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2244 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2245 | { |
46900298 | 2246 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2247 | u16 reason_code; |
2248 | ||
8d61ffa5 | 2249 | sdata_assert_lock(sdata); |
77fdaa12 | 2250 | |
66e67e41 | 2251 | if (len < 24 + 2) |
8d61ffa5 | 2252 | return; |
77fdaa12 | 2253 | |
66e67e41 | 2254 | if (!ifmgd->associated || |
b203ca39 | 2255 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2256 | return; |
f0706e82 JB |
2257 | |
2258 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2259 | ||
bdcbd8e0 JB |
2260 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2261 | mgmt->sa, reason_code); | |
f0706e82 | 2262 | |
37ad3888 JB |
2263 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2264 | ||
6ff57cf8 | 2265 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2266 | } |
2267 | ||
c74d084f CL |
2268 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2269 | u8 *supp_rates, unsigned int supp_rates_len, | |
2270 | u32 *rates, u32 *basic_rates, | |
2271 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2272 | int *min_rate, int *min_rate_index, |
2273 | int shift, u32 rate_flags) | |
c74d084f CL |
2274 | { |
2275 | int i, j; | |
2276 | ||
2277 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2278 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2279 | bool is_basic = !!(supp_rates[i] & 0x80); |
2280 | ||
2103dec1 | 2281 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2282 | *have_higher_than_11mbit = true; |
2283 | ||
2284 | /* | |
2285 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2286 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2287 | * | |
2288 | * Note: Even through the membership selector and the basic | |
2289 | * rate flag share the same bit, they are not exactly | |
2290 | * the same. | |
2291 | */ | |
2292 | if (!!(supp_rates[i] & 0x80) && | |
2293 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2294 | continue; | |
2295 | ||
2296 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2297 | struct ieee80211_rate *br; |
2298 | int brate; | |
2299 | ||
2300 | br = &sband->bitrates[j]; | |
2301 | if ((rate_flags & br->flags) != rate_flags) | |
2302 | continue; | |
2303 | ||
2304 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2305 | if (brate == rate) { | |
c74d084f CL |
2306 | *rates |= BIT(j); |
2307 | if (is_basic) | |
2308 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2309 | if ((rate * 5) < *min_rate) { |
2310 | *min_rate = rate * 5; | |
c74d084f CL |
2311 | *min_rate_index = j; |
2312 | } | |
2313 | break; | |
2314 | } | |
2315 | } | |
2316 | } | |
2317 | } | |
f0706e82 | 2318 | |
66e67e41 JB |
2319 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2320 | bool assoc) | |
2321 | { | |
2322 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2323 | ||
8d61ffa5 | 2324 | sdata_assert_lock(sdata); |
66e67e41 | 2325 | |
66e67e41 JB |
2326 | if (!assoc) { |
2327 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2328 | ||
2329 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2330 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2331 | sdata->u.mgd.flags = 0; |
34a3740d | 2332 | mutex_lock(&sdata->local->mtx); |
55de908a | 2333 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2334 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2335 | } |
2336 | ||
2337 | kfree(assoc_data); | |
2338 | sdata->u.mgd.assoc_data = NULL; | |
2339 | } | |
2340 | ||
2341 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2342 | struct cfg80211_bss *cbss, | |
af6b6374 | 2343 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2344 | { |
46900298 | 2345 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2346 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2347 | struct ieee80211_supported_band *sband; |
f0706e82 | 2348 | struct sta_info *sta; |
af6b6374 | 2349 | u8 *pos; |
af6b6374 | 2350 | u16 capab_info, aid; |
f0706e82 | 2351 | struct ieee802_11_elems elems; |
bda3933a | 2352 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2353 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2354 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2355 | u32 changed = 0; |
c74d084f | 2356 | int err; |
35d865af | 2357 | bool ret; |
f0706e82 | 2358 | |
af6b6374 | 2359 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2360 | |
f0706e82 | 2361 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2362 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2363 | |
1dd84aa2 | 2364 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2365 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2366 | aid); | |
1dd84aa2 JB |
2367 | aid &= ~(BIT(15) | BIT(14)); |
2368 | ||
05cb9108 JB |
2369 | ifmgd->broken_ap = false; |
2370 | ||
2371 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2372 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2373 | aid); | |
05cb9108 JB |
2374 | aid = 0; |
2375 | ifmgd->broken_ap = true; | |
2376 | } | |
2377 | ||
af6b6374 | 2378 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2379 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2380 | |
f0706e82 | 2381 | if (!elems.supp_rates) { |
bdcbd8e0 | 2382 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2383 | return false; |
f0706e82 JB |
2384 | } |
2385 | ||
46900298 | 2386 | ifmgd->aid = aid; |
f0706e82 | 2387 | |
35d865af JB |
2388 | /* |
2389 | * Some APs are erroneously not including some information in their | |
2390 | * (re)association response frames. Try to recover by using the data | |
2391 | * from the beacon or probe response. This seems to afflict mobile | |
2392 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2393 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2394 | */ | |
2395 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2396 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2397 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2398 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2399 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2400 | const struct cfg80211_bss_ies *ies; | |
2401 | struct ieee802_11_elems bss_elems; | |
2402 | ||
2403 | rcu_read_lock(); | |
2404 | ies = rcu_dereference(cbss->ies); | |
2405 | if (ies) | |
2406 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2407 | GFP_ATOMIC); | |
2408 | rcu_read_unlock(); | |
2409 | if (!bss_ies) | |
2410 | return false; | |
2411 | ||
2412 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2413 | false, &bss_elems); | |
2414 | if (assoc_data->wmm && | |
2415 | !elems.wmm_param && bss_elems.wmm_param) { | |
2416 | elems.wmm_param = bss_elems.wmm_param; | |
2417 | sdata_info(sdata, | |
2418 | "AP bug: WMM param missing from AssocResp\n"); | |
2419 | } | |
2420 | ||
2421 | /* | |
2422 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2423 | * have to include the IEs in the (re)association response. | |
2424 | */ | |
2425 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2426 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2427 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2428 | sdata_info(sdata, | |
2429 | "AP bug: HT capability missing from AssocResp\n"); | |
2430 | } | |
2431 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2432 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2433 | elems.ht_operation = bss_elems.ht_operation; | |
2434 | sdata_info(sdata, | |
2435 | "AP bug: HT operation missing from AssocResp\n"); | |
2436 | } | |
2437 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2438 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2439 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2440 | sdata_info(sdata, | |
2441 | "AP bug: VHT capa missing from AssocResp\n"); | |
2442 | } | |
2443 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2444 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2445 | elems.vht_operation = bss_elems.vht_operation; | |
2446 | sdata_info(sdata, | |
2447 | "AP bug: VHT operation missing from AssocResp\n"); | |
2448 | } | |
2449 | } | |
2450 | ||
30eb1dc2 JB |
2451 | /* |
2452 | * We previously checked these in the beacon/probe response, so | |
2453 | * they should be present here. This is just a safety net. | |
2454 | */ | |
2455 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2456 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2457 | sdata_info(sdata, | |
35d865af JB |
2458 | "HT AP is missing WMM params or HT capability/operation\n"); |
2459 | ret = false; | |
2460 | goto out; | |
30eb1dc2 JB |
2461 | } |
2462 | ||
2463 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2464 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2465 | sdata_info(sdata, | |
35d865af JB |
2466 | "VHT AP is missing VHT capability/operation\n"); |
2467 | ret = false; | |
2468 | goto out; | |
30eb1dc2 JB |
2469 | } |
2470 | ||
2a33bee2 GE |
2471 | mutex_lock(&sdata->local->sta_mtx); |
2472 | /* | |
2473 | * station info was already allocated and inserted before | |
2474 | * the association and should be available to us | |
2475 | */ | |
7852e361 | 2476 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2477 | if (WARN_ON(!sta)) { |
2478 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2479 | ret = false; |
2480 | goto out; | |
77fdaa12 | 2481 | } |
05e5e883 | 2482 | |
55de908a | 2483 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2484 | |
30eb1dc2 | 2485 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2486 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2487 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2488 | elems.ht_cap_elem, sta); |
64f68e5d | 2489 | |
818255ea MP |
2490 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2491 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2492 | elems.vht_cap_elem, sta); |
818255ea | 2493 | |
30eb1dc2 JB |
2494 | /* |
2495 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2496 | * in their association response, so ignore that data for our own | |
2497 | * configuration. If it changed since the last beacon, we'll get the | |
2498 | * next beacon and update then. | |
2499 | */ | |
1128958d | 2500 | |
bee7f586 JB |
2501 | /* |
2502 | * If an operating mode notification IE is present, override the | |
2503 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2504 | * and use the # of streams from that element. | |
2505 | */ | |
2506 | if (elems.opmode_notif && | |
2507 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2508 | u8 nss; | |
2509 | ||
2510 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2511 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2512 | nss += 1; | |
2513 | sta->sta.rx_nss = nss; | |
2514 | } | |
2515 | ||
4b7679a5 | 2516 | rate_control_rate_init(sta); |
f0706e82 | 2517 | |
46900298 | 2518 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2519 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2520 | |
ddf4ac53 | 2521 | if (elems.wmm_param) |
c2c98fde | 2522 | set_sta_flag(sta, WLAN_STA_WME); |
ddf4ac53 | 2523 | |
3e4d40fa | 2524 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2525 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2526 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2527 | if (err) { | |
bdcbd8e0 JB |
2528 | sdata_info(sdata, |
2529 | "failed to move station %pM to desired state\n", | |
2530 | sta->sta.addr); | |
c8987876 JB |
2531 | WARN_ON(__sta_info_destroy(sta)); |
2532 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2533 | ret = false; |
2534 | goto out; | |
c8987876 JB |
2535 | } |
2536 | ||
7852e361 | 2537 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2538 | |
f2176d72 JO |
2539 | /* |
2540 | * Always handle WMM once after association regardless | |
2541 | * of the first value the AP uses. Setting -1 here has | |
2542 | * that effect because the AP values is an unsigned | |
2543 | * 4-bit value. | |
2544 | */ | |
2545 | ifmgd->wmm_last_param_set = -1; | |
2546 | ||
095d81ce | 2547 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 2548 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2549 | elems.wmm_param_len); |
aa837e1d | 2550 | else |
3abead59 JB |
2551 | ieee80211_set_wmm_default(sdata, false); |
2552 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2553 | |
60f8b39c JB |
2554 | /* set AID and assoc capability, |
2555 | * ieee80211_set_associated() will tell the driver */ | |
2556 | bss_conf->aid = aid; | |
2557 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2558 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2559 | |
d524215f FF |
2560 | /* |
2561 | * If we're using 4-addr mode, let the AP know that we're | |
2562 | * doing so, so that it can create the STA VLAN on its side | |
2563 | */ | |
2564 | if (ifmgd->use_4addr) | |
2565 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2566 | ||
15b7b062 | 2567 | /* |
b291ba11 JB |
2568 | * Start timer to probe the connection to the AP now. |
2569 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2570 | */ |
b291ba11 | 2571 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2572 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2573 | |
35d865af JB |
2574 | ret = true; |
2575 | out: | |
2576 | kfree(bss_ies); | |
2577 | return ret; | |
f0706e82 JB |
2578 | } |
2579 | ||
8d61ffa5 JB |
2580 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
2581 | struct ieee80211_mgmt *mgmt, | |
2582 | size_t len) | |
66e67e41 JB |
2583 | { |
2584 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2585 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2586 | u16 capab_info, status_code, aid; | |
2587 | struct ieee802_11_elems elems; | |
2588 | u8 *pos; | |
2589 | bool reassoc; | |
8d61ffa5 | 2590 | struct cfg80211_bss *bss; |
66e67e41 | 2591 | |
8d61ffa5 | 2592 | sdata_assert_lock(sdata); |
66e67e41 JB |
2593 | |
2594 | if (!assoc_data) | |
8d61ffa5 | 2595 | return; |
b203ca39 | 2596 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 2597 | return; |
66e67e41 JB |
2598 | |
2599 | /* | |
2600 | * AssocResp and ReassocResp have identical structure, so process both | |
2601 | * of them in this function. | |
2602 | */ | |
2603 | ||
2604 | if (len < 24 + 6) | |
8d61ffa5 | 2605 | return; |
66e67e41 JB |
2606 | |
2607 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2608 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2609 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2610 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2611 | ||
bdcbd8e0 JB |
2612 | sdata_info(sdata, |
2613 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2614 | reassoc ? "Rea" : "A", mgmt->sa, | |
2615 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2616 | |
2617 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 2618 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2619 | |
2620 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
2621 | elems.timeout_int && |
2622 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 2623 | u32 tu, ms; |
79ba1d89 | 2624 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 2625 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
2626 | sdata_info(sdata, |
2627 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2628 | mgmt->sa, tu, ms); | |
66e67e41 | 2629 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 2630 | assoc_data->timeout_started = true; |
66e67e41 | 2631 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
2632 | run_again(sdata, assoc_data->timeout); |
2633 | return; | |
66e67e41 JB |
2634 | } |
2635 | ||
8d61ffa5 | 2636 | bss = assoc_data->bss; |
66e67e41 JB |
2637 | |
2638 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2639 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2640 | mgmt->sa, status_code); | |
66e67e41 JB |
2641 | ieee80211_destroy_assoc_data(sdata, false); |
2642 | } else { | |
8d61ffa5 | 2643 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 2644 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 2645 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 2646 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 2647 | return; |
66e67e41 | 2648 | } |
635d999f | 2649 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2650 | |
2651 | /* | |
2652 | * destroy assoc_data afterwards, as otherwise an idle | |
2653 | * recalc after assoc_data is NULL but before associated | |
2654 | * is set can cause the interface to go idle | |
2655 | */ | |
2656 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2657 | } |
2658 | ||
6ff57cf8 | 2659 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); |
66e67e41 | 2660 | } |
8e3c1b77 | 2661 | |
98c8fccf | 2662 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2663 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2664 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2665 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2666 | { |
2667 | struct ieee80211_local *local = sdata->local; | |
2668 | int freq; | |
c2b13452 | 2669 | struct ieee80211_bss *bss; |
98c8fccf | 2670 | struct ieee80211_channel *channel; |
56007a02 | 2671 | |
8d61ffa5 | 2672 | sdata_assert_lock(sdata); |
b4f286a1 | 2673 | |
1cd8e88e | 2674 | if (elems->ds_params) |
59eb21a6 BR |
2675 | freq = ieee80211_channel_to_frequency(elems->ds_params[0], |
2676 | rx_status->band); | |
98c8fccf JB |
2677 | else |
2678 | freq = rx_status->freq; | |
2679 | ||
2680 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
2681 | ||
2682 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2683 | return; | |
2684 | ||
98c8fccf | 2685 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2686 | channel); |
817cee76 | 2687 | if (bss) { |
77fdaa12 | 2688 | ieee80211_rx_bss_put(local, bss); |
817cee76 AB |
2689 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
2690 | } | |
f0706e82 JB |
2691 | } |
2692 | ||
2693 | ||
f698d856 | 2694 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2695 | struct sk_buff *skb) |
f0706e82 | 2696 | { |
af6b6374 | 2697 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2698 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2699 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2700 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2701 | struct ieee802_11_elems elems; |
2702 | ||
15b7b062 KV |
2703 | ifmgd = &sdata->u.mgd; |
2704 | ||
8d61ffa5 | 2705 | sdata_assert_lock(sdata); |
77fdaa12 | 2706 | |
b203ca39 | 2707 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2708 | return; /* ignore ProbeResp to foreign address */ |
2709 | ||
ae6a44e3 EK |
2710 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2711 | if (baselen > len) | |
2712 | return; | |
2713 | ||
2714 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 2715 | false, &elems); |
ae6a44e3 | 2716 | |
d45c4172 | 2717 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2718 | |
77fdaa12 | 2719 | if (ifmgd->associated && |
b203ca39 | 2720 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2721 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2722 | |
2723 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2724 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2725 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2726 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2727 | ifmgd->auth_data->tries = 0; |
2728 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 2729 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2730 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2731 | } |
f0706e82 JB |
2732 | } |
2733 | ||
d91f36db JB |
2734 | /* |
2735 | * This is the canonical list of information elements we care about, | |
2736 | * the filter code also gives us all changes to the Microsoft OUI | |
2737 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2738 | * | |
2739 | * We implement beacon filtering in software since that means we can | |
2740 | * avoid processing the frame here and in cfg80211, and userspace | |
2741 | * will not be able to tell whether the hardware supports it or not. | |
2742 | * | |
2743 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2744 | * add items it requires. It also needs to be able to tell us to | |
2745 | * look out for other vendor IEs. | |
2746 | */ | |
2747 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2748 | (1ULL << WLAN_EID_COUNTRY) | |
2749 | (1ULL << WLAN_EID_ERP_INFO) | | |
2750 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2751 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2752 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2753 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2754 | |
8d61ffa5 JB |
2755 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
2756 | struct ieee80211_mgmt *mgmt, size_t len, | |
2757 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2758 | { |
d91f36db | 2759 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2760 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2761 | size_t baselen; |
2762 | struct ieee802_11_elems elems; | |
f698d856 | 2763 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2764 | struct ieee80211_chanctx_conf *chanctx_conf; |
2765 | struct ieee80211_channel *chan; | |
bee7f586 | 2766 | struct sta_info *sta; |
471b3efd | 2767 | u32 changed = 0; |
f87ad637 | 2768 | bool erp_valid; |
7a5158ef | 2769 | u8 erp_value = 0; |
d91f36db | 2770 | u32 ncrc; |
77fdaa12 | 2771 | u8 *bssid; |
8d61ffa5 | 2772 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 2773 | |
8d61ffa5 | 2774 | sdata_assert_lock(sdata); |
f0706e82 | 2775 | |
ae6a44e3 EK |
2776 | /* Process beacon from the current BSS */ |
2777 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2778 | if (baselen > len) | |
8d61ffa5 | 2779 | return; |
ae6a44e3 | 2780 | |
55de908a JB |
2781 | rcu_read_lock(); |
2782 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2783 | if (!chanctx_conf) { | |
2784 | rcu_read_unlock(); | |
8d61ffa5 | 2785 | return; |
55de908a JB |
2786 | } |
2787 | ||
4bf88530 | 2788 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 2789 | rcu_read_unlock(); |
8d61ffa5 | 2790 | return; |
55de908a | 2791 | } |
4bf88530 | 2792 | chan = chanctx_conf->def.chan; |
55de908a | 2793 | rcu_read_unlock(); |
f0706e82 | 2794 | |
c65dd147 | 2795 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2796 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 2797 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 2798 | len - baselen, false, &elems); |
77fdaa12 | 2799 | |
d45c4172 | 2800 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
2801 | if (elems.tim && !elems.parse_error) { |
2802 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
2803 | ifmgd->dtim_period = tim_ie->dtim_period; | |
2804 | } | |
989c6505 | 2805 | ifmgd->have_beacon = true; |
c65dd147 | 2806 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
2807 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
2808 | sdata->vif.bss_conf.sync_tsf = | |
2809 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2810 | sdata->vif.bss_conf.sync_device_ts = | |
2811 | rx_status->device_timestamp; | |
2812 | if (elems.tim) | |
2813 | sdata->vif.bss_conf.sync_dtim_count = | |
2814 | elems.tim->dtim_count; | |
2815 | else | |
2816 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
2817 | } | |
66e67e41 JB |
2818 | /* continue assoc process */ |
2819 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 2820 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
2821 | run_again(sdata, ifmgd->assoc_data->timeout); |
2822 | return; | |
66e67e41 | 2823 | } |
77fdaa12 | 2824 | |
66e67e41 | 2825 | if (!ifmgd->associated || |
b203ca39 | 2826 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2827 | return; |
66e67e41 | 2828 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2829 | |
17e4ec14 JM |
2830 | /* Track average RSSI from the Beacon frames of the current AP */ |
2831 | ifmgd->last_beacon_signal = rx_status->signal; | |
2832 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2833 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2834 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2835 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 2836 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 2837 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
2838 | } else { |
2839 | ifmgd->ave_beacon_signal = | |
2840 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
2841 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
2842 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 2843 | ifmgd->count_beacon_signal++; |
17e4ec14 | 2844 | } |
615f7b9b MV |
2845 | |
2846 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
2847 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
2848 | int sig = ifmgd->ave_beacon_signal; | |
2849 | int last_sig = ifmgd->last_ave_beacon_signal; | |
2850 | ||
2851 | /* | |
2852 | * if signal crosses either of the boundaries, invoke callback | |
2853 | * with appropriate parameters | |
2854 | */ | |
2855 | if (sig > ifmgd->rssi_max_thold && | |
2856 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
2857 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2858 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
2859 | } else if (sig < ifmgd->rssi_min_thold && |
2860 | (last_sig >= ifmgd->rssi_max_thold || | |
2861 | last_sig == 0)) { | |
2862 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2863 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
2864 | } |
2865 | } | |
2866 | ||
17e4ec14 | 2867 | if (bss_conf->cqm_rssi_thold && |
391a200a | 2868 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 2869 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
2870 | int sig = ifmgd->ave_beacon_signal / 16; |
2871 | int last_event = ifmgd->last_cqm_event_signal; | |
2872 | int thold = bss_conf->cqm_rssi_thold; | |
2873 | int hyst = bss_conf->cqm_rssi_hyst; | |
2874 | if (sig < thold && | |
2875 | (last_event == 0 || sig < last_event - hyst)) { | |
2876 | ifmgd->last_cqm_event_signal = sig; | |
2877 | ieee80211_cqm_rssi_notify( | |
2878 | &sdata->vif, | |
2879 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
2880 | GFP_KERNEL); | |
2881 | } else if (sig > thold && | |
2882 | (last_event == 0 || sig > last_event + hyst)) { | |
2883 | ifmgd->last_cqm_event_signal = sig; | |
2884 | ieee80211_cqm_rssi_notify( | |
2885 | &sdata->vif, | |
2886 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
2887 | GFP_KERNEL); | |
2888 | } | |
2889 | } | |
2890 | ||
392b9ffb | 2891 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 2892 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 2893 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 2894 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
2895 | } |
2896 | ||
b291ba11 JB |
2897 | /* |
2898 | * Push the beacon loss detection into the future since | |
2899 | * we are processing a beacon from the AP just now. | |
2900 | */ | |
d3a910a8 | 2901 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 2902 | |
d91f36db JB |
2903 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
2904 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 2905 | len - baselen, false, &elems, |
d91f36db JB |
2906 | care_about_ies, ncrc); |
2907 | ||
25c9c875 | 2908 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
2909 | bool directed_tim = ieee80211_check_tim(elems.tim, |
2910 | elems.tim_len, | |
2911 | ifmgd->aid); | |
1fb3606b | 2912 | if (directed_tim) { |
572e0012 | 2913 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
2914 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
2915 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2916 | ieee80211_hw_config(local, | |
2917 | IEEE80211_CONF_CHANGE_PS); | |
2918 | } | |
572e0012 | 2919 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 2920 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
2921 | local->pspolling = true; |
2922 | ||
2923 | /* | |
2924 | * Here is assumed that the driver will be | |
2925 | * able to send ps-poll frame and receive a | |
2926 | * response even though power save mode is | |
2927 | * enabled, but some drivers might require | |
2928 | * to disable power save here. This needs | |
2929 | * to be investigated. | |
2930 | */ | |
2931 | ieee80211_send_pspoll(local, sdata); | |
2932 | } | |
a97b77b9 VN |
2933 | } |
2934 | } | |
7a5158ef | 2935 | |
488dd7b5 | 2936 | if (sdata->vif.p2p) { |
67baf663 | 2937 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
2938 | int ret; |
2939 | ||
2940 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
2941 | len - baselen, | |
2942 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 2943 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
2944 | if (ret >= 2) { |
2945 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
2946 | /* valid noa_attr and index changed */ | |
2947 | sdata->u.mgd.p2p_noa_index = noa.index; | |
2948 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
2949 | changed |= BSS_CHANGED_P2P_PS; | |
2950 | /* | |
2951 | * make sure we update all information, the CRC | |
2952 | * mechanism doesn't look at P2P attributes. | |
2953 | */ | |
2954 | ifmgd->beacon_crc_valid = false; | |
2955 | } | |
2956 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
2957 | /* noa_attr not found and we had valid noa_attr before */ | |
2958 | sdata->u.mgd.p2p_noa_index = -1; | |
2959 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 2960 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
2961 | ifmgd->beacon_crc_valid = false; |
2962 | } | |
2963 | } | |
2964 | ||
d8ec4433 | 2965 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 2966 | return; |
30196673 | 2967 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 2968 | ifmgd->beacon_crc_valid = true; |
30196673 | 2969 | |
d45c4172 | 2970 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 2971 | |
d70b7616 JB |
2972 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2973 | &elems, true); | |
2974 | ||
095d81ce JB |
2975 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
2976 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
2977 | elems.wmm_param_len)) |
2978 | changed |= BSS_CHANGED_QOS; | |
2979 | ||
c65dd147 EG |
2980 | /* |
2981 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 2982 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 2983 | */ |
989c6505 | 2984 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
2985 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
2986 | if (elems.tim) | |
2987 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
2988 | else | |
2989 | bss_conf->dtim_period = 1; | |
ef429dad JB |
2990 | |
2991 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
2992 | sdata->vif.bss_conf.sync_tsf = | |
2993 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2994 | sdata->vif.bss_conf.sync_device_ts = | |
2995 | rx_status->device_timestamp; | |
2996 | if (elems.tim) | |
2997 | sdata->vif.bss_conf.sync_dtim_count = | |
2998 | elems.tim->dtim_count; | |
2999 | else | |
3000 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3001 | } | |
3002 | ||
989c6505 AB |
3003 | changed |= BSS_CHANGED_BEACON_INFO; |
3004 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3005 | |
3006 | mutex_lock(&local->iflist_mtx); | |
3007 | ieee80211_recalc_ps(local, -1); | |
3008 | mutex_unlock(&local->iflist_mtx); | |
3009 | ||
ce857888 | 3010 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3011 | } |
3012 | ||
1946bed9 | 3013 | if (elems.erp_info) { |
7a5158ef JB |
3014 | erp_valid = true; |
3015 | erp_value = elems.erp_info[0]; | |
3016 | } else { | |
3017 | erp_valid = false; | |
50c4afb9 | 3018 | } |
7a5158ef JB |
3019 | changed |= ieee80211_handle_bss_capability(sdata, |
3020 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3021 | erp_valid, erp_value); | |
f0706e82 | 3022 | |
1128958d | 3023 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3024 | sta = sta_info_get(sdata, bssid); |
3025 | ||
30eb1dc2 JB |
3026 | if (ieee80211_config_bw(sdata, sta, elems.ht_operation, |
3027 | elems.vht_operation, bssid, &changed)) { | |
3028 | mutex_unlock(&local->sta_mtx); | |
3029 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3030 | WLAN_REASON_DEAUTH_LEAVING, | |
3031 | true, deauth_buf); | |
6ff57cf8 JB |
3032 | cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, |
3033 | sizeof(deauth_buf)); | |
8d61ffa5 | 3034 | return; |
30eb1dc2 | 3035 | } |
bee7f586 JB |
3036 | |
3037 | if (sta && elems.opmode_notif) | |
3038 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3039 | rx_status->band, true); | |
1128958d | 3040 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3041 | |
04b7b2ff JB |
3042 | if (elems.country_elem && elems.pwr_constr_elem && |
3043 | mgmt->u.probe_resp.capab_info & | |
3044 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
3045 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
3046 | elems.country_elem, | |
3047 | elems.country_elem_len, | |
3048 | elems.pwr_constr_elem); | |
3f2355cb | 3049 | |
471b3efd | 3050 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3051 | } |
3052 | ||
1fa57d01 JB |
3053 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3054 | struct sk_buff *skb) | |
f0706e82 JB |
3055 | { |
3056 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3057 | struct ieee80211_mgmt *mgmt; |
3058 | u16 fc; | |
1b3a2e49 JB |
3059 | struct ieee802_11_elems elems; |
3060 | int ies_len; | |
f0706e82 | 3061 | |
f0706e82 JB |
3062 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3063 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3064 | fc = le16_to_cpu(mgmt->frame_control); | |
3065 | ||
8d61ffa5 | 3066 | sdata_lock(sdata); |
77fdaa12 | 3067 | |
66e67e41 JB |
3068 | switch (fc & IEEE80211_FCTL_STYPE) { |
3069 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3070 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3071 | break; |
3072 | case IEEE80211_STYPE_PROBE_RESP: | |
3073 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3074 | break; | |
3075 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3076 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3077 | break; |
3078 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3079 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3080 | break; |
3081 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3082 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3083 | break; |
3084 | case IEEE80211_STYPE_ASSOC_RESP: | |
3085 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3086 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3087 | break; |
3088 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3089 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3090 | ies_len = skb->len - |
3091 | offsetof(struct ieee80211_mgmt, | |
3092 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3093 | |
3094 | if (ies_len < 0) | |
3095 | break; | |
3096 | ||
3097 | ieee802_11_parse_elems( | |
3098 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3099 | ies_len, true, &elems); |
37799e52 JB |
3100 | |
3101 | if (elems.parse_error) | |
3102 | break; | |
3103 | ||
1b3a2e49 JB |
3104 | ieee80211_sta_process_chanswitch(sdata, |
3105 | rx_status->mactime, | |
04a161f4 | 3106 | &elems, false); |
1b3a2e49 JB |
3107 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3108 | ies_len = skb->len - | |
3109 | offsetof(struct ieee80211_mgmt, | |
3110 | u.action.u.ext_chan_switch.variable); | |
3111 | ||
3112 | if (ies_len < 0) | |
3113 | break; | |
3114 | ||
3115 | ieee802_11_parse_elems( | |
3116 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3117 | ies_len, true, &elems); |
1b3a2e49 JB |
3118 | |
3119 | if (elems.parse_error) | |
3120 | break; | |
3121 | ||
3122 | /* for the handling code pretend this was also an IE */ | |
3123 | elems.ext_chansw_ie = | |
3124 | &mgmt->u.action.u.ext_chan_switch.data; | |
3125 | ||
66e67e41 | 3126 | ieee80211_sta_process_chanswitch(sdata, |
37799e52 | 3127 | rx_status->mactime, |
04a161f4 | 3128 | &elems, false); |
77fdaa12 | 3129 | } |
37799e52 | 3130 | break; |
77fdaa12 | 3131 | } |
8d61ffa5 | 3132 | sdata_unlock(sdata); |
f0706e82 JB |
3133 | } |
3134 | ||
9c6bd790 | 3135 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3136 | { |
60f8b39c JB |
3137 | struct ieee80211_sub_if_data *sdata = |
3138 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3139 | |
9b7d72c1 | 3140 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3141 | } |
3142 | ||
04ac3c0e | 3143 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3144 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3145 | { |
6ae16775 | 3146 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3147 | |
37ad3888 | 3148 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3149 | tx, frame_buf); |
37ad3888 | 3150 | |
6ff57cf8 JB |
3151 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3152 | IEEE80211_DEAUTH_FRAME_LEN); | |
04ac3c0e FF |
3153 | } |
3154 | ||
66e67e41 JB |
3155 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3156 | { | |
3157 | struct ieee80211_local *local = sdata->local; | |
3158 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3159 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3160 | u32 tx_flags = 0; |
66e67e41 | 3161 | |
8d61ffa5 | 3162 | sdata_assert_lock(sdata); |
66e67e41 JB |
3163 | |
3164 | if (WARN_ON_ONCE(!auth_data)) | |
3165 | return -EINVAL; | |
3166 | ||
66e67e41 JB |
3167 | auth_data->tries++; |
3168 | ||
3169 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3170 | sdata_info(sdata, "authentication with %pM timed out\n", |
3171 | auth_data->bss->bssid); | |
66e67e41 JB |
3172 | |
3173 | /* | |
3174 | * Most likely AP is not in the range so remove the | |
3175 | * bss struct for that AP. | |
3176 | */ | |
3177 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3178 | ||
3179 | return -ETIMEDOUT; | |
3180 | } | |
3181 | ||
a1845fc7 JB |
3182 | drv_mgd_prepare_tx(local, sdata); |
3183 | ||
66e67e41 | 3184 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3185 | u16 trans = 1; |
3186 | u16 status = 0; | |
3187 | ||
bdcbd8e0 JB |
3188 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3189 | auth_data->bss->bssid, auth_data->tries, | |
3190 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3191 | |
3192 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3193 | |
3194 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3195 | trans = auth_data->sae_trans; | |
3196 | status = auth_data->sae_status; | |
3197 | auth_data->expected_transaction = trans; | |
3198 | } | |
3199 | ||
6211dd12 SG |
3200 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3201 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3202 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3203 | ||
6b8ece3a JM |
3204 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3205 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3206 | auth_data->bss->bssid, |
1672c0e3 JB |
3207 | auth_data->bss->bssid, NULL, 0, 0, |
3208 | tx_flags); | |
66e67e41 JB |
3209 | } else { |
3210 | const u8 *ssidie; | |
3211 | ||
bdcbd8e0 JB |
3212 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3213 | auth_data->bss->bssid, auth_data->tries, | |
3214 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3215 | |
9caf0364 | 3216 | rcu_read_lock(); |
66e67e41 | 3217 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3218 | if (!ssidie) { |
3219 | rcu_read_unlock(); | |
66e67e41 | 3220 | return -EINVAL; |
9caf0364 | 3221 | } |
66e67e41 JB |
3222 | /* |
3223 | * Direct probe is sent to broadcast address as some APs | |
3224 | * will not answer to direct packet in unassociated state. | |
3225 | */ | |
3226 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
6211dd12 | 3227 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3228 | auth_data->bss->channel, false); |
9caf0364 | 3229 | rcu_read_unlock(); |
66e67e41 JB |
3230 | } |
3231 | ||
6211dd12 | 3232 | if (tx_flags == 0) { |
1672c0e3 | 3233 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3234 | auth_data->timeout_started = true; |
8d61ffa5 | 3235 | run_again(sdata, auth_data->timeout); |
89afe614 | 3236 | } else { |
cb236d2d JB |
3237 | auth_data->timeout = |
3238 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3239 | auth_data->timeout_started = true; | |
3240 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3241 | } |
66e67e41 JB |
3242 | |
3243 | return 0; | |
3244 | } | |
3245 | ||
3246 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3247 | { | |
3248 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3249 | struct ieee80211_local *local = sdata->local; | |
3250 | ||
8d61ffa5 | 3251 | sdata_assert_lock(sdata); |
66e67e41 | 3252 | |
66e67e41 JB |
3253 | assoc_data->tries++; |
3254 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3255 | sdata_info(sdata, "association with %pM timed out\n", |
3256 | assoc_data->bss->bssid); | |
66e67e41 JB |
3257 | |
3258 | /* | |
3259 | * Most likely AP is not in the range so remove the | |
3260 | * bss struct for that AP. | |
3261 | */ | |
3262 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3263 | ||
3264 | return -ETIMEDOUT; | |
3265 | } | |
3266 | ||
bdcbd8e0 JB |
3267 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3268 | assoc_data->bss->bssid, assoc_data->tries, | |
3269 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3270 | ieee80211_send_assoc(sdata); |
3271 | ||
1672c0e3 JB |
3272 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3273 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3274 | assoc_data->timeout_started = true; |
8d61ffa5 | 3275 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3276 | } else { |
cb236d2d JB |
3277 | assoc_data->timeout = |
3278 | round_jiffies_up(jiffies + | |
3279 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3280 | assoc_data->timeout_started = true; | |
3281 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3282 | } |
66e67e41 JB |
3283 | |
3284 | return 0; | |
3285 | } | |
3286 | ||
1672c0e3 JB |
3287 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3288 | __le16 fc, bool acked) | |
3289 | { | |
3290 | struct ieee80211_local *local = sdata->local; | |
3291 | ||
3292 | sdata->u.mgd.status_fc = fc; | |
3293 | sdata->u.mgd.status_acked = acked; | |
3294 | sdata->u.mgd.status_received = true; | |
3295 | ||
3296 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3297 | } | |
3298 | ||
1fa57d01 | 3299 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3300 | { |
9c6bd790 | 3301 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3302 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3303 | |
8d61ffa5 | 3304 | sdata_lock(sdata); |
77fdaa12 | 3305 | |
1672c0e3 JB |
3306 | if (ifmgd->status_received) { |
3307 | __le16 fc = ifmgd->status_fc; | |
3308 | bool status_acked = ifmgd->status_acked; | |
3309 | ||
3310 | ifmgd->status_received = false; | |
3311 | if (ifmgd->auth_data && | |
3312 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3313 | if (status_acked) { | |
3314 | ifmgd->auth_data->timeout = | |
3315 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3316 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3317 | } else { |
3318 | ifmgd->auth_data->timeout = jiffies - 1; | |
3319 | } | |
89afe614 | 3320 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3321 | } else if (ifmgd->assoc_data && |
3322 | (ieee80211_is_assoc_req(fc) || | |
3323 | ieee80211_is_reassoc_req(fc))) { | |
3324 | if (status_acked) { | |
3325 | ifmgd->assoc_data->timeout = | |
3326 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3327 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3328 | } else { |
3329 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3330 | } | |
89afe614 | 3331 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3332 | } |
3333 | } | |
3334 | ||
89afe614 | 3335 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3336 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3337 | if (ifmgd->auth_data->done) { | |
3338 | /* | |
3339 | * ok ... we waited for assoc but userspace didn't, | |
3340 | * so let's just kill the auth data | |
3341 | */ | |
3342 | ieee80211_destroy_auth_data(sdata, false); | |
3343 | } else if (ieee80211_probe_auth(sdata)) { | |
3344 | u8 bssid[ETH_ALEN]; | |
3345 | ||
3346 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3347 | ||
3348 | ieee80211_destroy_auth_data(sdata, false); | |
3349 | ||
6ff57cf8 | 3350 | cfg80211_auth_timeout(sdata->dev, bssid); |
66e67e41 | 3351 | } |
89afe614 | 3352 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3353 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3354 | |
89afe614 | 3355 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3356 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3357 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3358 | ieee80211_do_assoc(sdata)) { |
959867fa | 3359 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
66e67e41 JB |
3360 | |
3361 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3362 | cfg80211_assoc_timeout(sdata->dev, bss); |
66e67e41 | 3363 | } |
89afe614 | 3364 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3365 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3366 | |
392b9ffb | 3367 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3368 | ifmgd->associated) { |
a43abf29 | 3369 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3370 | int max_tries; |
a43abf29 | 3371 | |
0c1ad2ca | 3372 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3373 | |
72a8a3ed | 3374 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3375 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3376 | else |
180205bd | 3377 | max_tries = max_probe_tries; |
72a8a3ed | 3378 | |
4e5ff376 FF |
3379 | /* ACK received for nullfunc probing frame */ |
3380 | if (!ifmgd->probe_send_count) | |
3381 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3382 | else if (ifmgd->nullfunc_failed) { |
3383 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3384 | mlme_dbg(sdata, |
3385 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3386 | bssid, ifmgd->probe_send_count, | |
3387 | max_tries); | |
04ac3c0e FF |
3388 | ieee80211_mgd_probe_ap_send(sdata); |
3389 | } else { | |
bdcbd8e0 JB |
3390 | mlme_dbg(sdata, |
3391 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3392 | bssid); | |
95acac61 | 3393 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3394 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3395 | false); | |
04ac3c0e FF |
3396 | } |
3397 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3398 | run_again(sdata, ifmgd->probe_timeout); |
04ac3c0e | 3399 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3400 | mlme_dbg(sdata, |
3401 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3402 | bssid, probe_wait_ms); | |
95acac61 | 3403 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3404 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3405 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3406 | mlme_dbg(sdata, |
3407 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3408 | bssid, probe_wait_ms, | |
3409 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3410 | ieee80211_mgd_probe_ap_send(sdata); |
3411 | } else { | |
b291ba11 JB |
3412 | /* |
3413 | * We actually lost the connection ... or did we? | |
3414 | * Let's make sure! | |
3415 | */ | |
b38afa87 BG |
3416 | wiphy_debug(local->hw.wiphy, |
3417 | "%s: No probe response from AP %pM" | |
3418 | " after %dms, disconnecting.\n", | |
3419 | sdata->name, | |
180205bd | 3420 | bssid, probe_wait_ms); |
04ac3c0e | 3421 | |
95acac61 | 3422 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3423 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3424 | } |
3425 | } | |
3426 | ||
8d61ffa5 | 3427 | sdata_unlock(sdata); |
f0706e82 JB |
3428 | } |
3429 | ||
b291ba11 JB |
3430 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3431 | { | |
3432 | struct ieee80211_sub_if_data *sdata = | |
3433 | (struct ieee80211_sub_if_data *) data; | |
3434 | struct ieee80211_local *local = sdata->local; | |
3435 | ||
3436 | if (local->quiescing) | |
3437 | return; | |
3438 | ||
682bd38b | 3439 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3440 | ieee80211_queue_work(&sdata->local->hw, |
3441 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3442 | } |
3443 | ||
3444 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3445 | { | |
3446 | struct ieee80211_sub_if_data *sdata = | |
3447 | (struct ieee80211_sub_if_data *) data; | |
3448 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3449 | struct ieee80211_local *local = sdata->local; | |
3450 | ||
3451 | if (local->quiescing) | |
3452 | return; | |
3453 | ||
42935eca | 3454 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3455 | } |
3456 | ||
3457 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3458 | { | |
3459 | struct ieee80211_sub_if_data *sdata = | |
3460 | container_of(work, struct ieee80211_sub_if_data, | |
3461 | u.mgd.monitor_work); | |
3462 | ||
3463 | ieee80211_mgd_probe_ap(sdata, false); | |
3464 | } | |
3465 | ||
9c6bd790 JB |
3466 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3467 | { | |
494f1fe5 EP |
3468 | u32 flags; |
3469 | ||
ad935687 | 3470 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3471 | __ieee80211_stop_poll(sdata); |
ad935687 | 3472 | |
b291ba11 | 3473 | /* let's probe the connection once */ |
494f1fe5 EP |
3474 | flags = sdata->local->hw.flags; |
3475 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3476 | ieee80211_queue_work(&sdata->local->hw, | |
3477 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3478 | /* and do all the other regular work too */ |
64592c8f | 3479 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3480 | } |
9c6bd790 | 3481 | } |
f0706e82 | 3482 | |
b8360ab8 JB |
3483 | #ifdef CONFIG_PM |
3484 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
3485 | { | |
3486 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3487 | ||
8d61ffa5 | 3488 | sdata_lock(sdata); |
b8360ab8 | 3489 | if (!ifmgd->associated) { |
8d61ffa5 | 3490 | sdata_unlock(sdata); |
b8360ab8 JB |
3491 | return; |
3492 | } | |
3493 | ||
3494 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
3495 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
3496 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
3497 | ieee80211_sta_connection_lost(sdata, | |
3498 | ifmgd->associated->bssid, | |
3499 | WLAN_REASON_UNSPECIFIED, | |
3500 | true); | |
8d61ffa5 | 3501 | sdata_unlock(sdata); |
b8360ab8 JB |
3502 | return; |
3503 | } | |
8d61ffa5 | 3504 | sdata_unlock(sdata); |
b8360ab8 JB |
3505 | } |
3506 | #endif | |
3507 | ||
9c6bd790 JB |
3508 | /* interface setup */ |
3509 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3510 | { |
46900298 | 3511 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3512 | |
46900298 | 3513 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3514 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3515 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3516 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3517 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3518 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3519 | ieee80211_csa_connection_drop_work); | |
687da132 | 3520 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
46900298 | 3521 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3522 | (unsigned long) sdata); |
b291ba11 JB |
3523 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3524 | (unsigned long) sdata); | |
3525 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3526 | (unsigned long) sdata); | |
46900298 | 3527 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3528 | (unsigned long) sdata); |
9c6bd790 | 3529 | |
ab1faead | 3530 | ifmgd->flags = 0; |
1478acb3 | 3531 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
3532 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
3533 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 3534 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 3535 | |
0f78231b JB |
3536 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) |
3537 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3538 | else | |
3539 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3540 | } |
3541 | ||
77fdaa12 JB |
3542 | /* scan finished notification */ |
3543 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3544 | { |
31ee67a1 | 3545 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3546 | |
77fdaa12 JB |
3547 | /* Restart STA timers */ |
3548 | rcu_read_lock(); | |
370bd005 BG |
3549 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
3550 | if (ieee80211_sdata_running(sdata)) | |
3551 | ieee80211_restart_sta_timer(sdata); | |
3552 | } | |
77fdaa12 JB |
3553 | rcu_read_unlock(); |
3554 | } | |
60f8b39c | 3555 | |
77fdaa12 JB |
3556 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3557 | unsigned long data, void *dummy) | |
3558 | { | |
3559 | s32 latency_usec = (s32) data; | |
3560 | struct ieee80211_local *local = | |
3561 | container_of(nb, struct ieee80211_local, | |
3562 | network_latency_notifier); | |
1fa6f4af | 3563 | |
77fdaa12 JB |
3564 | mutex_lock(&local->iflist_mtx); |
3565 | ieee80211_recalc_ps(local, latency_usec); | |
3566 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3567 | |
77fdaa12 | 3568 | return 0; |
9c6bd790 JB |
3569 | } |
3570 | ||
f2d9d270 JB |
3571 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
3572 | struct cfg80211_bss *cbss) | |
3573 | { | |
3574 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3575 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3576 | const struct ieee80211_ht_cap *ht_cap; | |
3577 | const struct ieee80211_vht_cap *vht_cap; | |
3578 | u8 chains = 1; | |
3579 | ||
3580 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3581 | return chains; | |
3582 | ||
9caf0364 | 3583 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3584 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3585 | ht_cap = (void *)(ht_cap_ie + 2); | |
3586 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3587 | /* | |
3588 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3589 | * "Tx Unequal Modulation Supported" fields. | |
3590 | */ | |
3591 | } | |
3592 | ||
3593 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3594 | return chains; | |
3595 | ||
9caf0364 | 3596 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3597 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3598 | u8 nss; | |
3599 | u16 tx_mcs_map; | |
3600 | ||
3601 | vht_cap = (void *)(vht_cap_ie + 2); | |
3602 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3603 | for (nss = 8; nss > 0; nss--) { | |
3604 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3605 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3606 | break; | |
3607 | } | |
3608 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3609 | chains = max(chains, nss); | |
3610 | } | |
3611 | ||
3612 | return chains; | |
3613 | } | |
3614 | ||
b17166a7 JB |
3615 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3616 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3617 | { |
3618 | struct ieee80211_local *local = sdata->local; | |
3619 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
24398e39 | 3620 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3621 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3622 | struct ieee80211_supported_band *sband; |
4bf88530 | 3623 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3624 | int ret; |
a1cf775d | 3625 | |
24398e39 JB |
3626 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3627 | ||
f2d9d270 JB |
3628 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3629 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3630 | IEEE80211_STA_DISABLE_160MHZ); | |
3631 | ||
9caf0364 JB |
3632 | rcu_read_lock(); |
3633 | ||
f2d9d270 JB |
3634 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3635 | sband->ht_cap.ht_supported) { | |
08e6effa | 3636 | const u8 *ht_oper_ie, *ht_cap; |
24398e39 | 3637 | |
9caf0364 | 3638 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3639 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3640 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa JB |
3641 | |
3642 | ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); | |
3643 | if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) { | |
3644 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
3645 | ht_oper = NULL; | |
3646 | } | |
24398e39 JB |
3647 | } |
3648 | ||
f2d9d270 JB |
3649 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3650 | sband->vht_cap.vht_supported) { | |
08e6effa | 3651 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 3652 | |
9caf0364 JB |
3653 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3654 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3655 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3656 | vht_oper = (void *)(vht_oper_ie + 2); | |
3657 | if (vht_oper && !ht_oper) { | |
3658 | vht_oper = NULL; | |
bdcbd8e0 | 3659 | sdata_info(sdata, |
f2d9d270 | 3660 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
3661 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3662 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 3663 | } |
08e6effa JB |
3664 | |
3665 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
3666 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
3667 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
3668 | vht_oper = NULL; | |
3669 | } | |
24398e39 JB |
3670 | } |
3671 | ||
f2d9d270 JB |
3672 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3673 | cbss->channel, | |
3674 | ht_oper, vht_oper, | |
5cdaed1e | 3675 | &chandef, false); |
04ecd257 | 3676 | |
f2d9d270 JB |
3677 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3678 | local->rx_chains); | |
24398e39 | 3679 | |
9caf0364 JB |
3680 | rcu_read_unlock(); |
3681 | ||
04ecd257 JB |
3682 | /* will change later if needed */ |
3683 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3684 | ||
34a3740d | 3685 | mutex_lock(&local->mtx); |
f2d9d270 JB |
3686 | /* |
3687 | * If this fails (possibly due to channel context sharing | |
3688 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3689 | * same control channel) try to use a smaller bandwidth. | |
3690 | */ | |
3691 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3692 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
3693 | |
3694 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
3695 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
3696 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 3697 | goto out; |
0418a445 | 3698 | |
d601cd8d | 3699 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 3700 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
3701 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
3702 | IEEE80211_CHANCTX_SHARED); | |
3703 | } | |
34a3740d JB |
3704 | out: |
3705 | mutex_unlock(&local->mtx); | |
f2d9d270 | 3706 | return ret; |
b17166a7 JB |
3707 | } |
3708 | ||
3709 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3710 | struct cfg80211_bss *cbss, bool assoc) | |
3711 | { | |
3712 | struct ieee80211_local *local = sdata->local; | |
3713 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3714 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3715 | struct sta_info *new_sta = NULL; | |
3716 | bool have_sta = false; | |
3717 | int err; | |
3718 | ||
3719 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3720 | return -EINVAL; | |
3721 | ||
3722 | if (assoc) { | |
3723 | rcu_read_lock(); | |
3724 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3725 | rcu_read_unlock(); | |
3726 | } | |
3727 | ||
3728 | if (!have_sta) { | |
3729 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3730 | if (!new_sta) | |
3731 | return -ENOMEM; | |
3732 | } | |
13e0c8e3 | 3733 | if (new_sta) { |
5d6a1b06 JB |
3734 | u32 rates = 0, basic_rates = 0; |
3735 | bool have_higher_than_11mbit; | |
3736 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 3737 | struct ieee80211_chanctx_conf *chanctx_conf; |
b17166a7 | 3738 | struct ieee80211_supported_band *sband; |
8cef2c9d | 3739 | const struct cfg80211_bss_ies *ies; |
2103dec1 SW |
3740 | int shift; |
3741 | u32 rate_flags; | |
b17166a7 JB |
3742 | |
3743 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3744 | ||
3745 | err = ieee80211_prep_channel(sdata, cbss); | |
3746 | if (err) { | |
3747 | sta_info_free(local, new_sta); | |
2103dec1 | 3748 | return -EINVAL; |
b17166a7 | 3749 | } |
2103dec1 SW |
3750 | shift = ieee80211_vif_get_shift(&sdata->vif); |
3751 | ||
3752 | rcu_read_lock(); | |
3753 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3754 | if (WARN_ON(!chanctx_conf)) { | |
3755 | rcu_read_unlock(); | |
3756 | return -EINVAL; | |
3757 | } | |
3758 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
3759 | rcu_read_unlock(); | |
5d6a1b06 | 3760 | |
5d6a1b06 JB |
3761 | ieee80211_get_rates(sband, bss->supp_rates, |
3762 | bss->supp_rates_len, | |
3763 | &rates, &basic_rates, | |
3764 | &have_higher_than_11mbit, | |
2103dec1 SW |
3765 | &min_rate, &min_rate_index, |
3766 | shift, rate_flags); | |
5d6a1b06 JB |
3767 | |
3768 | /* | |
3769 | * This used to be a workaround for basic rates missing | |
3770 | * in the association response frame. Now that we no | |
3771 | * longer use the basic rates from there, it probably | |
3772 | * doesn't happen any more, but keep the workaround so | |
3773 | * in case some *other* APs are buggy in different ways | |
3774 | * we can connect -- with a warning. | |
3775 | */ | |
3776 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3777 | sdata_info(sdata, |
3778 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3779 | basic_rates = BIT(min_rate_index); |
3780 | } | |
3781 | ||
13e0c8e3 | 3782 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3783 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3784 | ||
3785 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3786 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3787 | have_higher_than_11mbit) |
3788 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3789 | else | |
3790 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
3791 | ||
3792 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
3793 | ||
8c358bcd JB |
3794 | /* set timing information */ |
3795 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 3796 | rcu_read_lock(); |
ef429dad JB |
3797 | ies = rcu_dereference(cbss->beacon_ies); |
3798 | if (ies) { | |
3799 | const u8 *tim_ie; | |
3800 | ||
3801 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3802 | sdata->vif.bss_conf.sync_device_ts = | |
3803 | bss->device_ts_beacon; | |
3804 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
3805 | ies->data, ies->len); | |
3806 | if (tim_ie && tim_ie[1] >= 2) | |
3807 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
3808 | else | |
3809 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3810 | } else if (!(local->hw.flags & | |
3811 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
3812 | ies = rcu_dereference(cbss->proberesp_ies); | |
3813 | /* must be non-NULL since beacon IEs were NULL */ | |
3814 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3815 | sdata->vif.bss_conf.sync_device_ts = | |
3816 | bss->device_ts_presp; | |
3817 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3818 | } else { | |
3819 | sdata->vif.bss_conf.sync_tsf = 0; | |
3820 | sdata->vif.bss_conf.sync_device_ts = 0; | |
3821 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3822 | } | |
8cef2c9d | 3823 | rcu_read_unlock(); |
8c358bcd JB |
3824 | |
3825 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 3826 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
3827 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
3828 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
3829 | |
3830 | if (assoc) | |
13e0c8e3 | 3831 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 3832 | |
13e0c8e3 JB |
3833 | err = sta_info_insert(new_sta); |
3834 | new_sta = NULL; | |
a1cf775d | 3835 | if (err) { |
bdcbd8e0 JB |
3836 | sdata_info(sdata, |
3837 | "failed to insert STA entry for the AP (error %d)\n", | |
3838 | err); | |
a1cf775d JB |
3839 | return err; |
3840 | } | |
3841 | } else | |
b203ca39 | 3842 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
3843 | |
3844 | return 0; | |
3845 | } | |
3846 | ||
77fdaa12 JB |
3847 | /* config hooks */ |
3848 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
3849 | struct cfg80211_auth_request *req) | |
9c6bd790 | 3850 | { |
66e67e41 JB |
3851 | struct ieee80211_local *local = sdata->local; |
3852 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3853 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 3854 | u16 auth_alg; |
66e67e41 JB |
3855 | int err; |
3856 | ||
3857 | /* prepare auth data structure */ | |
9c6bd790 | 3858 | |
77fdaa12 JB |
3859 | switch (req->auth_type) { |
3860 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
3861 | auth_alg = WLAN_AUTH_OPEN; | |
3862 | break; | |
3863 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 3864 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 3865 | return -EOPNOTSUPP; |
77fdaa12 JB |
3866 | auth_alg = WLAN_AUTH_SHARED_KEY; |
3867 | break; | |
3868 | case NL80211_AUTHTYPE_FT: | |
3869 | auth_alg = WLAN_AUTH_FT; | |
3870 | break; | |
3871 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
3872 | auth_alg = WLAN_AUTH_LEAP; | |
3873 | break; | |
6b8ece3a JM |
3874 | case NL80211_AUTHTYPE_SAE: |
3875 | auth_alg = WLAN_AUTH_SAE; | |
3876 | break; | |
77fdaa12 JB |
3877 | default: |
3878 | return -EOPNOTSUPP; | |
60f8b39c | 3879 | } |
77fdaa12 | 3880 | |
6b8ece3a JM |
3881 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
3882 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 3883 | if (!auth_data) |
9c6bd790 | 3884 | return -ENOMEM; |
77fdaa12 | 3885 | |
66e67e41 | 3886 | auth_data->bss = req->bss; |
77fdaa12 | 3887 | |
6b8ece3a JM |
3888 | if (req->sae_data_len >= 4) { |
3889 | __le16 *pos = (__le16 *) req->sae_data; | |
3890 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
3891 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
3892 | memcpy(auth_data->data, req->sae_data + 4, | |
3893 | req->sae_data_len - 4); | |
3894 | auth_data->data_len += req->sae_data_len - 4; | |
3895 | } | |
3896 | ||
77fdaa12 | 3897 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
3898 | memcpy(&auth_data->data[auth_data->data_len], |
3899 | req->ie, req->ie_len); | |
3900 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 3901 | } |
77fdaa12 | 3902 | |
fffd0934 | 3903 | if (req->key && req->key_len) { |
66e67e41 JB |
3904 | auth_data->key_len = req->key_len; |
3905 | auth_data->key_idx = req->key_idx; | |
3906 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
3907 | } |
3908 | ||
66e67e41 | 3909 | auth_data->algorithm = auth_alg; |
60f8b39c | 3910 | |
66e67e41 | 3911 | /* try to authenticate/probe */ |
2a33bee2 | 3912 | |
66e67e41 JB |
3913 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
3914 | ifmgd->assoc_data) { | |
3915 | err = -EBUSY; | |
3916 | goto err_free; | |
2a33bee2 GE |
3917 | } |
3918 | ||
66e67e41 JB |
3919 | if (ifmgd->auth_data) |
3920 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 3921 | |
66e67e41 JB |
3922 | /* prep auth_data so we don't go into idle on disassoc */ |
3923 | ifmgd->auth_data = auth_data; | |
af6b6374 | 3924 | |
7b119dc0 JB |
3925 | if (ifmgd->associated) { |
3926 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
3927 | ||
3928 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3929 | WLAN_REASON_UNSPECIFIED, | |
3930 | false, frame_buf); | |
3931 | ||
6ff57cf8 JB |
3932 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3933 | sizeof(frame_buf)); | |
7b119dc0 | 3934 | } |
af6b6374 | 3935 | |
bdcbd8e0 | 3936 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 3937 | |
a1cf775d JB |
3938 | err = ieee80211_prep_connection(sdata, req->bss, false); |
3939 | if (err) | |
66e67e41 | 3940 | goto err_clear; |
af6b6374 | 3941 | |
66e67e41 JB |
3942 | err = ieee80211_probe_auth(sdata); |
3943 | if (err) { | |
66e67e41 JB |
3944 | sta_info_destroy_addr(sdata, req->bss->bssid); |
3945 | goto err_clear; | |
3946 | } | |
3947 | ||
3948 | /* hold our own reference */ | |
5b112d3d | 3949 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 3950 | return 0; |
66e67e41 JB |
3951 | |
3952 | err_clear: | |
3d2abdfd EP |
3953 | memset(ifmgd->bssid, 0, ETH_ALEN); |
3954 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
3955 | ifmgd->auth_data = NULL; |
3956 | err_free: | |
3957 | kfree(auth_data); | |
66e67e41 | 3958 | return err; |
af6b6374 JB |
3959 | } |
3960 | ||
095d81ce JB |
3961 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
3962 | const u8 *wmm_param, int len) | |
3963 | { | |
3964 | const u8 *pos; | |
3965 | size_t left; | |
3966 | ||
3967 | if (len < 8) | |
3968 | return false; | |
3969 | ||
3970 | if (wmm_param[5] != 1 /* version */) | |
3971 | return false; | |
3972 | ||
3973 | pos = wmm_param + 8; | |
3974 | left = len - 8; | |
3975 | ||
3976 | for (; left >= 4; left -= 4, pos += 4) { | |
3977 | u8 aifsn = pos[0] & 0x0f; | |
3978 | u8 ecwmin = pos[1] & 0x0f; | |
3979 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
3980 | int aci = (pos[0] >> 5) & 0x03; | |
3981 | ||
3982 | if (aifsn < 2) { | |
3983 | sdata_info(sdata, | |
3984 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
3985 | aifsn, aci); | |
3986 | return false; | |
3987 | } | |
3988 | if (ecwmin > ecwmax) { | |
3989 | sdata_info(sdata, | |
3990 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
3991 | ecwmin, ecwmax, aci); | |
3992 | return false; | |
3993 | } | |
3994 | } | |
3995 | ||
3996 | return true; | |
3997 | } | |
3998 | ||
77fdaa12 JB |
3999 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4000 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4001 | { |
66e67e41 | 4002 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4003 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4004 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4005 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4006 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4007 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4008 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4009 | int i, err; |
f0706e82 | 4010 | |
66e67e41 JB |
4011 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4012 | if (!assoc_data) | |
4013 | return -ENOMEM; | |
4014 | ||
9caf0364 JB |
4015 | rcu_read_lock(); |
4016 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4017 | if (!ssidie) { | |
4018 | rcu_read_unlock(); | |
4019 | kfree(assoc_data); | |
4020 | return -EINVAL; | |
4021 | } | |
4022 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4023 | assoc_data->ssid_len = ssidie[1]; | |
4024 | rcu_read_unlock(); | |
4025 | ||
7b119dc0 JB |
4026 | if (ifmgd->associated) { |
4027 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4028 | ||
4029 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4030 | WLAN_REASON_UNSPECIFIED, | |
4031 | false, frame_buf); | |
4032 | ||
6ff57cf8 JB |
4033 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4034 | sizeof(frame_buf)); | |
7b119dc0 | 4035 | } |
66e67e41 JB |
4036 | |
4037 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4038 | err = -EBUSY; | |
4039 | goto err_free; | |
af6b6374 | 4040 | } |
77fdaa12 | 4041 | |
66e67e41 JB |
4042 | if (ifmgd->assoc_data) { |
4043 | err = -EBUSY; | |
4044 | goto err_free; | |
4045 | } | |
77fdaa12 | 4046 | |
66e67e41 JB |
4047 | if (ifmgd->auth_data) { |
4048 | bool match; | |
4049 | ||
4050 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4051 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4052 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4053 | } |
4054 | ||
66e67e41 | 4055 | /* prepare assoc data */ |
095d81ce | 4056 | |
d8ec4433 JO |
4057 | ifmgd->beacon_crc_valid = false; |
4058 | ||
095d81ce JB |
4059 | assoc_data->wmm = bss->wmm_used && |
4060 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4061 | if (assoc_data->wmm) { | |
4062 | /* try to check validity of WMM params IE */ | |
4063 | const struct cfg80211_bss_ies *ies; | |
4064 | const u8 *wp, *start, *end; | |
4065 | ||
4066 | rcu_read_lock(); | |
4067 | ies = rcu_dereference(req->bss->ies); | |
4068 | start = ies->data; | |
4069 | end = start + ies->len; | |
4070 | ||
4071 | while (true) { | |
4072 | wp = cfg80211_find_vendor_ie( | |
4073 | WLAN_OUI_MICROSOFT, | |
4074 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4075 | start, end - start); | |
4076 | if (!wp) | |
4077 | break; | |
4078 | start = wp + wp[1] + 2; | |
4079 | /* if this IE is too short, try the next */ | |
4080 | if (wp[1] <= 4) | |
4081 | continue; | |
4082 | /* if this IE is WMM params, we found what we wanted */ | |
4083 | if (wp[6] == 1) | |
4084 | break; | |
4085 | } | |
4086 | ||
4087 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4088 | wp[1] - 2)) { | |
4089 | assoc_data->wmm = false; | |
4090 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4091 | } | |
4092 | rcu_read_unlock(); | |
4093 | } | |
4094 | ||
de5036aa JB |
4095 | /* |
4096 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4097 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4098 | * ciphers is configured as pairwise. | |
4099 | * We can set this to true for non-11n hardware, that'll be checked | |
4100 | * separately along with the peer capabilities. | |
4101 | */ | |
1c4cb928 | 4102 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4103 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4104 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4105 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4106 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4107 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4108 | netdev_info(sdata->dev, |
d545daba | 4109 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4110 | } |
4111 | } | |
77fdaa12 | 4112 | |
d545daba | 4113 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4114 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4115 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4116 | } | |
ef96a842 | 4117 | |
dd5ecfea JB |
4118 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4119 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4120 | ||
4e74bfdb JB |
4121 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4122 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4123 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4124 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4125 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4126 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4127 | if (!bss->wmm_used && |
4128 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4129 | netdev_info(sdata->dev, |
4130 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4131 | } |
4e74bfdb | 4132 | |
d545daba MP |
4133 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4134 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4135 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4136 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4137 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4138 | if (!bss->wmm_used && |
4139 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4140 | netdev_info(sdata->dev, |
4141 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4142 | } |
4143 | ||
ef96a842 BG |
4144 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4145 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4146 | sizeof(ifmgd->ht_capa_mask)); | |
4147 | ||
dd5ecfea JB |
4148 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4149 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4150 | sizeof(ifmgd->vht_capa_mask)); | |
4151 | ||
77fdaa12 | 4152 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4153 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4154 | assoc_data->ie_len = req->ie_len; | |
4155 | } | |
f679f65d | 4156 | |
66e67e41 | 4157 | assoc_data->bss = req->bss; |
f679f65d | 4158 | |
af6b6374 JB |
4159 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4160 | if (ifmgd->powersave) | |
04ecd257 | 4161 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4162 | else |
04ecd257 | 4163 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4164 | } else |
04ecd257 | 4165 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4166 | |
66e67e41 | 4167 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4168 | assoc_data->supp_rates = bss->supp_rates; |
4169 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4170 | |
9caf0364 | 4171 | rcu_read_lock(); |
9dde6423 JB |
4172 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4173 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4174 | assoc_data->ap_ht_param = | |
4175 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4176 | else | |
a8243b72 | 4177 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4178 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4179 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4180 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4181 | sizeof(struct ieee80211_vht_cap)); | |
4182 | else | |
4183 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4184 | rcu_read_unlock(); |
63f170e0 | 4185 | |
ab13315a | 4186 | if (bss->wmm_used && bss->uapsd_supported && |
24aa11ab AB |
4187 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) && |
4188 | sdata->wmm_acm != 0xff) { | |
76f0303d | 4189 | assoc_data->uapsd = true; |
ab13315a KV |
4190 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4191 | } else { | |
76f0303d | 4192 | assoc_data->uapsd = false; |
ab13315a KV |
4193 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4194 | } | |
4195 | ||
77fdaa12 | 4196 | if (req->prev_bssid) |
66e67e41 | 4197 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4198 | |
4199 | if (req->use_mfp) { | |
4200 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4201 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4202 | } else { | |
4203 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4204 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4205 | } | |
4206 | ||
4207 | if (req->crypto.control_port) | |
4208 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4209 | else | |
4210 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4211 | ||
a621fa4d JB |
4212 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4213 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4214 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4215 | sdata->vif.type); | |
a621fa4d | 4216 | |
66e67e41 JB |
4217 | /* kick off associate process */ |
4218 | ||
4219 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4220 | ifmgd->dtim_period = 0; |
989c6505 | 4221 | ifmgd->have_beacon = false; |
66e67e41 | 4222 | |
a1cf775d JB |
4223 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4224 | if (err) | |
4225 | goto err_clear; | |
66e67e41 | 4226 | |
c65dd147 EG |
4227 | rcu_read_lock(); |
4228 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4229 | |
c65dd147 EG |
4230 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4231 | !beacon_ies) { | |
4232 | /* | |
4233 | * Wait up to one beacon interval ... | |
4234 | * should this be more if we miss one? | |
4235 | */ | |
4236 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4237 | ifmgd->bssid); | |
4238 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4239 | assoc_data->timeout_started = true; |
c65dd147 EG |
4240 | assoc_data->need_beacon = true; |
4241 | } else if (beacon_ies) { | |
4242 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4243 | beacon_ies->data, | |
4244 | beacon_ies->len); | |
ef429dad JB |
4245 | u8 dtim_count = 0; |
4246 | ||
c65dd147 EG |
4247 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4248 | const struct ieee80211_tim_ie *tim; | |
4249 | tim = (void *)(tim_ie + 2); | |
4250 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4251 | dtim_count = tim->dtim_count; |
826262c3 | 4252 | } |
989c6505 | 4253 | ifmgd->have_beacon = true; |
66e67e41 | 4254 | assoc_data->timeout = jiffies; |
89afe614 | 4255 | assoc_data->timeout_started = true; |
ef429dad JB |
4256 | |
4257 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4258 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4259 | sdata->vif.bss_conf.sync_device_ts = | |
4260 | bss->device_ts_beacon; | |
4261 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4262 | } | |
c65dd147 EG |
4263 | } else { |
4264 | assoc_data->timeout = jiffies; | |
89afe614 | 4265 | assoc_data->timeout_started = true; |
66e67e41 | 4266 | } |
c65dd147 EG |
4267 | rcu_read_unlock(); |
4268 | ||
8d61ffa5 | 4269 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4270 | |
fcff4f10 PS |
4271 | if (bss->corrupt_data) { |
4272 | char *corrupt_type = "data"; | |
4273 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4274 | if (bss->corrupt_data & | |
4275 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4276 | corrupt_type = "beacon and probe response"; | |
4277 | else | |
4278 | corrupt_type = "beacon"; | |
4279 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4280 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4281 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4282 | corrupt_type); | |
fcff4f10 PS |
4283 | } |
4284 | ||
8d61ffa5 | 4285 | return 0; |
66e67e41 | 4286 | err_clear: |
3d2abdfd EP |
4287 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4288 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4289 | ifmgd->assoc_data = NULL; |
4290 | err_free: | |
4291 | kfree(assoc_data); | |
66e67e41 | 4292 | return err; |
f0706e82 JB |
4293 | } |
4294 | ||
77fdaa12 | 4295 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4296 | struct cfg80211_deauth_request *req) |
f0706e82 | 4297 | { |
46900298 | 4298 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4299 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4300 | bool tx = !req->local_state_change; |
de3d43a3 | 4301 | bool report_frame = false; |
f0706e82 | 4302 | |
bdcbd8e0 JB |
4303 | sdata_info(sdata, |
4304 | "deauthenticating from %pM by local choice (reason=%d)\n", | |
4305 | req->bssid, req->reason_code); | |
0ff71613 | 4306 | |
86552017 | 4307 | if (ifmgd->auth_data) { |
8c7d857c | 4308 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4309 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4310 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4311 | req->reason_code, tx, |
37ad3888 | 4312 | frame_buf); |
86552017 | 4313 | ieee80211_destroy_auth_data(sdata, false); |
86552017 | 4314 | |
de3d43a3 | 4315 | report_frame = true; |
86552017 | 4316 | goto out; |
8c7d857c EG |
4317 | } |
4318 | ||
86552017 JB |
4319 | if (ifmgd->associated && |
4320 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
4321 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4322 | req->reason_code, tx, frame_buf); | |
de3d43a3 | 4323 | report_frame = true; |
86552017 | 4324 | } |
37ad3888 | 4325 | |
86552017 | 4326 | out: |
de3d43a3 | 4327 | if (report_frame) |
6ff57cf8 JB |
4328 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4329 | IEEE80211_DEAUTH_FRAME_LEN); | |
86552017 | 4330 | |
f0706e82 JB |
4331 | return 0; |
4332 | } | |
84363e6e | 4333 | |
77fdaa12 | 4334 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4335 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4336 | { |
77fdaa12 | 4337 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4338 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4339 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4340 | |
8d8b261a JB |
4341 | /* |
4342 | * cfg80211 should catch this ... but it's racy since | |
4343 | * we can receive a disassoc frame, process it, hand it | |
4344 | * to cfg80211 while that's in a locked section already | |
4345 | * trying to tell us that the user wants to disconnect. | |
4346 | */ | |
8d61ffa5 | 4347 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4348 | return -ENOLINK; |
77fdaa12 | 4349 | |
bdcbd8e0 JB |
4350 | sdata_info(sdata, |
4351 | "disassociating from %pM by local choice (reason=%d)\n", | |
4352 | req->bss->bssid, req->reason_code); | |
0ff71613 | 4353 | |
e69e95db | 4354 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4355 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4356 | req->reason_code, !req->local_state_change, | |
4357 | frame_buf); | |
10f644a4 | 4358 | |
6ff57cf8 JB |
4359 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4360 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4361 | |
10f644a4 JB |
4362 | return 0; |
4363 | } | |
026331c4 | 4364 | |
afa762f6 | 4365 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4366 | { |
4367 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4368 | ||
49921859 BG |
4369 | /* |
4370 | * Make sure some work items will not run after this, | |
4371 | * they will not do anything but might not have been | |
4372 | * cancelled when disconnecting. | |
4373 | */ | |
4374 | cancel_work_sync(&ifmgd->monitor_work); | |
4375 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4376 | cancel_work_sync(&ifmgd->request_smps_work); | |
4377 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4378 | cancel_work_sync(&ifmgd->chswitch_work); | |
4379 | ||
8d61ffa5 | 4380 | sdata_lock(sdata); |
959867fa JB |
4381 | if (ifmgd->assoc_data) { |
4382 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 4383 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
4384 | cfg80211_assoc_timeout(sdata->dev, bss); |
4385 | } | |
54e4ffb2 JB |
4386 | if (ifmgd->auth_data) |
4387 | ieee80211_destroy_auth_data(sdata, false); | |
4388 | del_timer_sync(&ifmgd->timer); | |
8d61ffa5 | 4389 | sdata_unlock(sdata); |
54e4ffb2 JB |
4390 | } |
4391 | ||
a97c13c3 JO |
4392 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4393 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4394 | gfp_t gfp) | |
4395 | { | |
4396 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4397 | ||
b5878a2d JB |
4398 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4399 | ||
a97c13c3 JO |
4400 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4401 | } | |
4402 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |