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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 JB |
33 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
34 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) | |
35 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
36 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
37 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) | |
39 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 40 | |
180205bd BG |
41 | static int max_nullfunc_tries = 2; |
42 | module_param(max_nullfunc_tries, int, 0644); | |
43 | MODULE_PARM_DESC(max_nullfunc_tries, | |
44 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
45 | ||
46 | static int max_probe_tries = 5; | |
47 | module_param(max_probe_tries, int, 0644); | |
48 | MODULE_PARM_DESC(max_probe_tries, | |
49 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
50 | |
51 | /* | |
7ccc8bd7 FF |
52 | * Beacon loss timeout is calculated as N frames times the |
53 | * advertised beacon interval. This may need to be somewhat | |
54 | * higher than what hardware might detect to account for | |
55 | * delays in the host processing frames. But since we also | |
56 | * probe on beacon miss before declaring the connection lost | |
57 | * default to what we want. | |
b291ba11 | 58 | */ |
7ccc8bd7 FF |
59 | #define IEEE80211_BEACON_LOSS_COUNT 7 |
60 | ||
b291ba11 JB |
61 | /* |
62 | * Time the connection can be idle before we probe | |
63 | * it to see if we can still talk to the AP. | |
64 | */ | |
d1c5091f | 65 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
66 | /* |
67 | * Time we wait for a probe response after sending | |
68 | * a probe request because of beacon loss or for | |
69 | * checking the connection still works. | |
70 | */ | |
180205bd BG |
71 | static int probe_wait_ms = 500; |
72 | module_param(probe_wait_ms, int, 0644); | |
73 | MODULE_PARM_DESC(probe_wait_ms, | |
74 | "Maximum time(ms) to wait for probe response" | |
75 | " before disconnecting (reason 4)."); | |
f0706e82 | 76 | |
17e4ec14 JM |
77 | /* |
78 | * Weight given to the latest Beacon frame when calculating average signal | |
79 | * strength for Beacon frames received in the current BSS. This must be | |
80 | * between 1 and 15. | |
81 | */ | |
82 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
83 | ||
391a200a JM |
84 | /* |
85 | * How many Beacon frames need to have been used in average signal strength | |
86 | * before starting to indicate signal change events. | |
87 | */ | |
88 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
89 | ||
5bb644a0 JB |
90 | #define TMR_RUNNING_TIMER 0 |
91 | #define TMR_RUNNING_CHANSW 1 | |
92 | ||
77fdaa12 JB |
93 | /* |
94 | * All cfg80211 functions have to be called outside a locked | |
95 | * section so that they can acquire a lock themselves... This | |
96 | * is much simpler than queuing up things in cfg80211, but we | |
97 | * do need some indirection for that here. | |
98 | */ | |
99 | enum rx_mgmt_action { | |
100 | /* no action required */ | |
101 | RX_MGMT_NONE, | |
102 | ||
77fdaa12 JB |
103 | /* caller must call cfg80211_send_deauth() */ |
104 | RX_MGMT_CFG80211_DEAUTH, | |
105 | ||
106 | /* caller must call cfg80211_send_disassoc() */ | |
107 | RX_MGMT_CFG80211_DISASSOC, | |
66e67e41 JB |
108 | |
109 | /* caller must call cfg80211_send_rx_auth() */ | |
110 | RX_MGMT_CFG80211_RX_AUTH, | |
111 | ||
112 | /* caller must call cfg80211_send_rx_assoc() */ | |
113 | RX_MGMT_CFG80211_RX_ASSOC, | |
114 | ||
115 | /* caller must call cfg80211_send_assoc_timeout() */ | |
116 | RX_MGMT_CFG80211_ASSOC_TIMEOUT, | |
77fdaa12 JB |
117 | }; |
118 | ||
5484e237 | 119 | /* utils */ |
77fdaa12 JB |
120 | static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) |
121 | { | |
46a5ebaf | 122 | lockdep_assert_held(&ifmgd->mtx); |
77fdaa12 JB |
123 | } |
124 | ||
ca386f31 JB |
125 | /* |
126 | * We can have multiple work items (and connection probing) | |
127 | * scheduling this timer, but we need to take care to only | |
128 | * reschedule it when it should fire _earlier_ than it was | |
129 | * asked for before, or if it's not pending right now. This | |
130 | * function ensures that. Note that it then is required to | |
131 | * run this function for all timeouts after the first one | |
132 | * has happened -- the work that runs from this timer will | |
133 | * do that. | |
134 | */ | |
66e67e41 | 135 | static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout) |
ca386f31 JB |
136 | { |
137 | ASSERT_MGD_MTX(ifmgd); | |
138 | ||
139 | if (!timer_pending(&ifmgd->timer) || | |
140 | time_before(timeout, ifmgd->timer.expires)) | |
141 | mod_timer(&ifmgd->timer, timeout); | |
142 | } | |
143 | ||
d3a910a8 | 144 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 145 | { |
c1288b12 | 146 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
147 | return; |
148 | ||
7eeff74c JB |
149 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
150 | return; | |
151 | ||
b291ba11 | 152 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 153 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
154 | } |
155 | ||
be099e82 LR |
156 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
157 | { | |
0c699c3a LR |
158 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
159 | ||
8628172f SG |
160 | if (unlikely(!sdata->u.mgd.associated)) |
161 | return; | |
162 | ||
be099e82 LR |
163 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
164 | return; | |
165 | ||
166 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
167 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
0c699c3a LR |
168 | |
169 | ifmgd->probe_send_count = 0; | |
be099e82 LR |
170 | } |
171 | ||
5484e237 | 172 | static int ecw2cw(int ecw) |
60f8b39c | 173 | { |
5484e237 | 174 | return (1 << ecw) - 1; |
60f8b39c JB |
175 | } |
176 | ||
24398e39 JB |
177 | static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata, |
178 | struct ieee80211_ht_operation *ht_oper, | |
179 | const u8 *bssid, bool reconfig) | |
d5522e03 JB |
180 | { |
181 | struct ieee80211_local *local = sdata->local; | |
182 | struct ieee80211_supported_band *sband; | |
55de908a JB |
183 | struct ieee80211_chanctx_conf *chanctx_conf; |
184 | struct ieee80211_channel *chan; | |
d5522e03 JB |
185 | struct sta_info *sta; |
186 | u32 changed = 0; | |
9ed6bcce | 187 | u16 ht_opmode; |
64f68e5d | 188 | bool disable_40 = false; |
d5522e03 | 189 | |
55de908a JB |
190 | rcu_read_lock(); |
191 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
192 | if (WARN_ON(!chanctx_conf)) { | |
193 | rcu_read_unlock(); | |
194 | return 0; | |
195 | } | |
4bf88530 | 196 | chan = chanctx_conf->def.chan; |
55de908a JB |
197 | rcu_read_unlock(); |
198 | sband = local->hw.wiphy->bands[chan->band]; | |
d5522e03 | 199 | |
4bf88530 JB |
200 | switch (sdata->vif.bss_conf.chandef.width) { |
201 | case NL80211_CHAN_WIDTH_40: | |
202 | if (sdata->vif.bss_conf.chandef.chan->center_freq > | |
203 | sdata->vif.bss_conf.chandef.center_freq1 && | |
75e6934a | 204 | chan->flags & IEEE80211_CHAN_NO_HT40MINUS) |
64f68e5d | 205 | disable_40 = true; |
4bf88530 JB |
206 | if (sdata->vif.bss_conf.chandef.chan->center_freq < |
207 | sdata->vif.bss_conf.chandef.center_freq1 && | |
75e6934a | 208 | chan->flags & IEEE80211_CHAN_NO_HT40PLUS) |
64f68e5d JB |
209 | disable_40 = true; |
210 | break; | |
211 | default: | |
212 | break; | |
213 | } | |
d5522e03 | 214 | |
24398e39 JB |
215 | /* This can change during the lifetime of the BSS */ |
216 | if (!(ht_oper->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
64f68e5d JB |
217 | disable_40 = true; |
218 | ||
219 | mutex_lock(&local->sta_mtx); | |
220 | sta = sta_info_get(sdata, bssid); | |
d5522e03 | 221 | |
64f68e5d JB |
222 | WARN_ON_ONCE(!sta); |
223 | ||
224 | if (sta && !sta->supports_40mhz) | |
225 | disable_40 = true; | |
226 | ||
227 | if (sta && (!reconfig || | |
91a0099c | 228 | (disable_40 != !(sta->sta.ht_cap.cap & |
64f68e5d | 229 | IEEE80211_HT_CAP_SUP_WIDTH_20_40)))) { |
d5522e03 | 230 | |
64f68e5d JB |
231 | if (disable_40) |
232 | sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
233 | else | |
234 | sta->sta.ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
7cc44ed4 | 235 | |
64f68e5d | 236 | rate_control_rate_update(local, sband, sta, |
8f727ef3 | 237 | IEEE80211_RC_BW_CHANGED); |
0aaffa9b | 238 | } |
64f68e5d | 239 | mutex_unlock(&local->sta_mtx); |
d5522e03 | 240 | |
074d46d1 | 241 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); |
d5522e03 JB |
242 | |
243 | /* if bss configuration changed store the new one */ | |
24398e39 | 244 | if (!reconfig || (sdata->vif.bss_conf.ht_operation_mode != ht_opmode)) { |
d5522e03 | 245 | changed |= BSS_CHANGED_HT; |
9ed6bcce | 246 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
d5522e03 JB |
247 | } |
248 | ||
249 | return changed; | |
250 | } | |
251 | ||
9c6bd790 JB |
252 | /* frame sending functions */ |
253 | ||
66e67e41 JB |
254 | static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, |
255 | struct ieee80211_supported_band *sband, | |
256 | u32 *rates) | |
257 | { | |
258 | int i, j, count; | |
259 | *rates = 0; | |
260 | count = 0; | |
261 | for (i = 0; i < supp_rates_len; i++) { | |
262 | int rate = (supp_rates[i] & 0x7F) * 5; | |
263 | ||
264 | for (j = 0; j < sband->n_bitrates; j++) | |
265 | if (sband->bitrates[j].bitrate == rate) { | |
266 | *rates |= BIT(j); | |
267 | count++; | |
268 | break; | |
269 | } | |
270 | } | |
271 | ||
272 | return count; | |
273 | } | |
274 | ||
275 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, | |
9dde6423 | 276 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
277 | struct ieee80211_supported_band *sband, |
278 | struct ieee80211_channel *channel, | |
279 | enum ieee80211_smps_mode smps) | |
280 | { | |
66e67e41 JB |
281 | u8 *pos; |
282 | u32 flags = channel->flags; | |
283 | u16 cap; | |
284 | struct ieee80211_sta_ht_cap ht_cap; | |
285 | ||
286 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
287 | ||
66e67e41 JB |
288 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
289 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
290 | ||
66e67e41 JB |
291 | /* determine capability flags */ |
292 | cap = ht_cap.cap; | |
293 | ||
9dde6423 | 294 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
295 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
296 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
297 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
298 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
299 | } | |
300 | break; | |
301 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
302 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
303 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
304 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
305 | } | |
306 | break; | |
307 | } | |
308 | ||
24398e39 JB |
309 | /* |
310 | * If 40 MHz was disabled associate as though we weren't | |
311 | * capable of 40 MHz -- some broken APs will never fall | |
312 | * back to trying to transmit in 20 MHz. | |
313 | */ | |
314 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
315 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
316 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
317 | } | |
318 | ||
66e67e41 JB |
319 | /* set SM PS mode properly */ |
320 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
321 | switch (smps) { | |
322 | case IEEE80211_SMPS_AUTOMATIC: | |
323 | case IEEE80211_SMPS_NUM_MODES: | |
324 | WARN_ON(1); | |
325 | case IEEE80211_SMPS_OFF: | |
326 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
327 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
328 | break; | |
329 | case IEEE80211_SMPS_STATIC: | |
330 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
331 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
332 | break; | |
333 | case IEEE80211_SMPS_DYNAMIC: | |
334 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
335 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
336 | break; | |
337 | } | |
338 | ||
339 | /* reserve and fill IE */ | |
340 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
341 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
342 | } | |
343 | ||
d545daba MP |
344 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
345 | struct sk_buff *skb, | |
b08fbbd8 JB |
346 | struct ieee80211_supported_band *sband, |
347 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
348 | { |
349 | u8 *pos; | |
350 | u32 cap; | |
351 | struct ieee80211_sta_vht_cap vht_cap; | |
b08fbbd8 | 352 | int i; |
d545daba MP |
353 | |
354 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
355 | ||
356 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
357 | ||
358 | /* determine capability flags */ | |
359 | cap = vht_cap.cap; | |
360 | ||
f2d9d270 JB |
361 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
362 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
363 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
364 | } | |
365 | ||
366 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
367 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
368 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
369 | } | |
370 | ||
b08fbbd8 JB |
371 | /* |
372 | * Some APs apparently get confused if our capabilities are better | |
373 | * than theirs, so restrict what we advertise in the assoc request. | |
374 | */ | |
375 | if (!(ap_vht_cap->vht_cap_info & | |
376 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
377 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
378 | ||
379 | if (!(ap_vht_cap->vht_cap_info & | |
380 | cpu_to_le32(IEEE80211_VHT_CAP_TXSTBC))) | |
381 | cap &= ~(IEEE80211_VHT_CAP_RXSTBC_1 | | |
382 | IEEE80211_VHT_CAP_RXSTBC_3 | | |
383 | IEEE80211_VHT_CAP_RXSTBC_4); | |
384 | ||
385 | for (i = 0; i < 8; i++) { | |
386 | int shift = i * 2; | |
387 | u16 mask = IEEE80211_VHT_MCS_NOT_SUPPORTED << shift; | |
388 | u16 ap_mcs, our_mcs; | |
389 | ||
390 | ap_mcs = (le16_to_cpu(ap_vht_cap->supp_mcs.tx_mcs_map) & | |
391 | mask) >> shift; | |
392 | our_mcs = (le16_to_cpu(vht_cap.vht_mcs.rx_mcs_map) & | |
393 | mask) >> shift; | |
394 | ||
395 | switch (ap_mcs) { | |
396 | default: | |
397 | if (our_mcs <= ap_mcs) | |
398 | break; | |
399 | /* fall through */ | |
400 | case IEEE80211_VHT_MCS_NOT_SUPPORTED: | |
401 | vht_cap.vht_mcs.rx_mcs_map &= cpu_to_le16(~mask); | |
402 | vht_cap.vht_mcs.rx_mcs_map |= | |
403 | cpu_to_le16(ap_mcs << shift); | |
404 | } | |
405 | } | |
406 | ||
d545daba | 407 | /* reserve and fill IE */ |
d4950281 | 408 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
409 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
410 | } | |
411 | ||
66e67e41 JB |
412 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
413 | { | |
414 | struct ieee80211_local *local = sdata->local; | |
415 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
416 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
417 | struct sk_buff *skb; | |
418 | struct ieee80211_mgmt *mgmt; | |
419 | u8 *pos, qos_info; | |
420 | size_t offset = 0, noffset; | |
421 | int i, count, rates_len, supp_rates_len; | |
422 | u16 capab; | |
423 | struct ieee80211_supported_band *sband; | |
55de908a JB |
424 | struct ieee80211_chanctx_conf *chanctx_conf; |
425 | struct ieee80211_channel *chan; | |
66e67e41 | 426 | u32 rates = 0; |
66e67e41 JB |
427 | |
428 | lockdep_assert_held(&ifmgd->mtx); | |
429 | ||
55de908a JB |
430 | rcu_read_lock(); |
431 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
432 | if (WARN_ON(!chanctx_conf)) { | |
433 | rcu_read_unlock(); | |
434 | return; | |
435 | } | |
4bf88530 | 436 | chan = chanctx_conf->def.chan; |
55de908a JB |
437 | rcu_read_unlock(); |
438 | sband = local->hw.wiphy->bands[chan->band]; | |
66e67e41 JB |
439 | |
440 | if (assoc_data->supp_rates_len) { | |
441 | /* | |
442 | * Get all rates supported by the device and the AP as | |
443 | * some APs don't like getting a superset of their rates | |
444 | * in the association request (e.g. D-Link DAP 1353 in | |
445 | * b-only mode)... | |
446 | */ | |
447 | rates_len = ieee80211_compatible_rates(assoc_data->supp_rates, | |
448 | assoc_data->supp_rates_len, | |
449 | sband, &rates); | |
450 | } else { | |
451 | /* | |
452 | * In case AP not provide any supported rates information | |
453 | * before association, we send information element(s) with | |
454 | * all rates that we support. | |
455 | */ | |
456 | rates = ~0; | |
457 | rates_len = sband->n_bitrates; | |
458 | } | |
459 | ||
460 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
461 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
462 | 2 + assoc_data->ssid_len + /* SSID */ | |
463 | 4 + rates_len + /* (extended) rates */ | |
464 | 4 + /* power capability */ | |
465 | 2 + 2 * sband->n_channels + /* supported channels */ | |
466 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 467 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
468 | assoc_data->ie_len + /* extra IEs */ |
469 | 9, /* WMM */ | |
470 | GFP_KERNEL); | |
471 | if (!skb) | |
472 | return; | |
473 | ||
474 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
475 | ||
476 | capab = WLAN_CAPABILITY_ESS; | |
477 | ||
478 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
479 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
480 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
481 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
482 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
483 | } | |
484 | ||
485 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
486 | capab |= WLAN_CAPABILITY_PRIVACY; | |
487 | ||
488 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
489 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
490 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
491 | ||
492 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
493 | memset(mgmt, 0, 24); | |
494 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
495 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
496 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
497 | ||
498 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
499 | skb_put(skb, 10); | |
500 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
501 | IEEE80211_STYPE_REASSOC_REQ); | |
502 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
503 | mgmt->u.reassoc_req.listen_interval = | |
504 | cpu_to_le16(local->hw.conf.listen_interval); | |
505 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
506 | ETH_ALEN); | |
507 | } else { | |
508 | skb_put(skb, 4); | |
509 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
510 | IEEE80211_STYPE_ASSOC_REQ); | |
511 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
512 | mgmt->u.assoc_req.listen_interval = | |
513 | cpu_to_le16(local->hw.conf.listen_interval); | |
514 | } | |
515 | ||
516 | /* SSID */ | |
517 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
518 | *pos++ = WLAN_EID_SSID; | |
519 | *pos++ = assoc_data->ssid_len; | |
520 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
521 | ||
522 | /* add all rates which were marked to be used above */ | |
523 | supp_rates_len = rates_len; | |
524 | if (supp_rates_len > 8) | |
525 | supp_rates_len = 8; | |
526 | ||
527 | pos = skb_put(skb, supp_rates_len + 2); | |
528 | *pos++ = WLAN_EID_SUPP_RATES; | |
529 | *pos++ = supp_rates_len; | |
530 | ||
531 | count = 0; | |
532 | for (i = 0; i < sband->n_bitrates; i++) { | |
533 | if (BIT(i) & rates) { | |
534 | int rate = sband->bitrates[i].bitrate; | |
535 | *pos++ = (u8) (rate / 5); | |
536 | if (++count == 8) | |
537 | break; | |
538 | } | |
539 | } | |
540 | ||
541 | if (rates_len > count) { | |
542 | pos = skb_put(skb, rates_len - count + 2); | |
543 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
544 | *pos++ = rates_len - count; | |
545 | ||
546 | for (i++; i < sband->n_bitrates; i++) { | |
547 | if (BIT(i) & rates) { | |
548 | int rate = sband->bitrates[i].bitrate; | |
549 | *pos++ = (u8) (rate / 5); | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
554 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
555 | /* 1. power capabilities */ | |
556 | pos = skb_put(skb, 4); | |
557 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
558 | *pos++ = 2; | |
559 | *pos++ = 0; /* min tx power */ | |
55de908a | 560 | *pos++ = chan->max_power; /* max tx power */ |
66e67e41 JB |
561 | |
562 | /* 2. supported channels */ | |
563 | /* TODO: get this in reg domain format */ | |
564 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
565 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
566 | *pos++ = 2 * sband->n_channels; | |
567 | for (i = 0; i < sband->n_channels; i++) { | |
568 | *pos++ = ieee80211_frequency_to_channel( | |
569 | sband->channels[i].center_freq); | |
570 | *pos++ = 1; /* one channel in the subband*/ | |
571 | } | |
572 | } | |
573 | ||
574 | /* if present, add any custom IEs that go before HT */ | |
575 | if (assoc_data->ie_len && assoc_data->ie) { | |
576 | static const u8 before_ht[] = { | |
577 | WLAN_EID_SSID, | |
578 | WLAN_EID_SUPP_RATES, | |
579 | WLAN_EID_EXT_SUPP_RATES, | |
580 | WLAN_EID_PWR_CAPABILITY, | |
581 | WLAN_EID_SUPPORTED_CHANNELS, | |
582 | WLAN_EID_RSN, | |
583 | WLAN_EID_QOS_CAPA, | |
584 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
585 | WLAN_EID_MOBILITY_DOMAIN, | |
586 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
587 | }; | |
588 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
589 | before_ht, ARRAY_SIZE(before_ht), | |
590 | offset); | |
591 | pos = skb_put(skb, noffset - offset); | |
592 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
593 | offset = noffset; | |
594 | } | |
595 | ||
f2d9d270 JB |
596 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
597 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
598 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
599 | ||
a8243b72 | 600 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 601 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 602 | sband, chan, sdata->smps_mode); |
66e67e41 | 603 | |
d545daba | 604 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
605 | ieee80211_add_vht_ie(sdata, skb, sband, |
606 | &assoc_data->ap_vht_cap); | |
d545daba | 607 | |
66e67e41 JB |
608 | /* if present, add any custom non-vendor IEs that go after HT */ |
609 | if (assoc_data->ie_len && assoc_data->ie) { | |
610 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, | |
611 | assoc_data->ie_len, | |
612 | offset); | |
613 | pos = skb_put(skb, noffset - offset); | |
614 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
615 | offset = noffset; | |
616 | } | |
617 | ||
76f0303d JB |
618 | if (assoc_data->wmm) { |
619 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
620 | qos_info = ifmgd->uapsd_queues; |
621 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
622 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
623 | } else { | |
624 | qos_info = 0; | |
625 | } | |
626 | ||
627 | pos = skb_put(skb, 9); | |
628 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
629 | *pos++ = 7; /* len */ | |
630 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
631 | *pos++ = 0x50; | |
632 | *pos++ = 0xf2; | |
633 | *pos++ = 2; /* WME */ | |
634 | *pos++ = 0; /* WME info */ | |
635 | *pos++ = 1; /* WME ver */ | |
636 | *pos++ = qos_info; | |
637 | } | |
638 | ||
639 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
640 | if (assoc_data->ie_len && assoc_data->ie) { | |
641 | noffset = assoc_data->ie_len; | |
642 | pos = skb_put(skb, noffset - offset); | |
643 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
644 | } | |
645 | ||
a1845fc7 JB |
646 | drv_mgd_prepare_tx(local, sdata); |
647 | ||
66e67e41 | 648 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
649 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
650 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
651 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
652 | ieee80211_tx_skb(sdata, skb); |
653 | } | |
654 | ||
572e0012 KV |
655 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
656 | struct ieee80211_sub_if_data *sdata) | |
657 | { | |
572e0012 KV |
658 | struct ieee80211_pspoll *pspoll; |
659 | struct sk_buff *skb; | |
572e0012 | 660 | |
d8cd189e KV |
661 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
662 | if (!skb) | |
572e0012 | 663 | return; |
572e0012 | 664 | |
d8cd189e KV |
665 | pspoll = (struct ieee80211_pspoll *) skb->data; |
666 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 667 | |
62ae67be JB |
668 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
669 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
670 | } |
671 | ||
965bedad JB |
672 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
673 | struct ieee80211_sub_if_data *sdata, | |
674 | int powersave) | |
675 | { | |
676 | struct sk_buff *skb; | |
d8cd189e | 677 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 678 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 679 | |
d8cd189e KV |
680 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
681 | if (!skb) | |
965bedad | 682 | return; |
965bedad | 683 | |
d8cd189e | 684 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 685 | if (powersave) |
d8cd189e | 686 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 687 | |
62ae67be | 688 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
b6f35301 RM |
689 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
690 | IEEE80211_STA_CONNECTION_POLL)) | |
691 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; | |
692 | ||
62ae67be | 693 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
694 | } |
695 | ||
d524215f FF |
696 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
697 | struct ieee80211_sub_if_data *sdata) | |
698 | { | |
699 | struct sk_buff *skb; | |
700 | struct ieee80211_hdr *nullfunc; | |
701 | __le16 fc; | |
702 | ||
703 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
704 | return; | |
705 | ||
706 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 707 | if (!skb) |
d524215f | 708 | return; |
d15b8459 | 709 | |
d524215f FF |
710 | skb_reserve(skb, local->hw.extra_tx_headroom); |
711 | ||
712 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
713 | memset(nullfunc, 0, 30); | |
714 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
715 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
716 | nullfunc->frame_control = fc; | |
717 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
718 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
719 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
720 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
721 | ||
722 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
723 | ieee80211_tx_skb(sdata, skb); | |
724 | } | |
725 | ||
cc32abd4 JB |
726 | /* spectrum management related things */ |
727 | static void ieee80211_chswitch_work(struct work_struct *work) | |
728 | { | |
729 | struct ieee80211_sub_if_data *sdata = | |
730 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
cc32abd4 JB |
731 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
732 | ||
9607e6b6 | 733 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
734 | return; |
735 | ||
77fdaa12 JB |
736 | mutex_lock(&ifmgd->mtx); |
737 | if (!ifmgd->associated) | |
738 | goto out; | |
cc32abd4 | 739 | |
55de908a | 740 | sdata->local->_oper_channel = sdata->local->csa_channel; |
5ce6e438 JB |
741 | if (!sdata->local->ops->channel_switch) { |
742 | /* call "hw_config" only if doing sw channel switch */ | |
743 | ieee80211_hw_config(sdata->local, | |
744 | IEEE80211_CONF_CHANGE_CHANNEL); | |
1ea57b1f SL |
745 | } else { |
746 | /* update the device channel directly */ | |
55de908a | 747 | sdata->local->hw.conf.channel = sdata->local->_oper_channel; |
5ce6e438 | 748 | } |
77fdaa12 | 749 | |
cc32abd4 | 750 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
55de908a | 751 | ifmgd->associated->channel = sdata->local->_oper_channel; |
cc32abd4 | 752 | |
57eebdf3 | 753 | /* XXX: wait for a beacon first? */ |
cc32abd4 JB |
754 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
755 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
77fdaa12 JB |
756 | out: |
757 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
758 | mutex_unlock(&ifmgd->mtx); | |
cc32abd4 JB |
759 | } |
760 | ||
5ce6e438 JB |
761 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
762 | { | |
55de908a JB |
763 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
764 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
765 | |
766 | trace_api_chswitch_done(sdata, success); | |
767 | if (!success) { | |
882a7c69 JB |
768 | sdata_info(sdata, |
769 | "driver channel switch failed, disconnecting\n"); | |
770 | ieee80211_queue_work(&sdata->local->hw, | |
771 | &ifmgd->csa_connection_drop_work); | |
772 | } else { | |
773 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 774 | } |
5ce6e438 JB |
775 | } |
776 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
777 | ||
cc32abd4 JB |
778 | static void ieee80211_chswitch_timer(unsigned long data) |
779 | { | |
780 | struct ieee80211_sub_if_data *sdata = | |
781 | (struct ieee80211_sub_if_data *) data; | |
782 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
783 | ||
5bb644a0 JB |
784 | if (sdata->local->quiescing) { |
785 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
786 | return; | |
787 | } | |
788 | ||
42935eca | 789 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); |
cc32abd4 JB |
790 | } |
791 | ||
792 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
793 | struct ieee80211_channel_sw_ie *sw_elem, | |
5ce6e438 JB |
794 | struct ieee80211_bss *bss, |
795 | u64 timestamp) | |
cc32abd4 | 796 | { |
0c1ad2ca JB |
797 | struct cfg80211_bss *cbss = |
798 | container_of((void *)bss, struct cfg80211_bss, priv); | |
cc32abd4 JB |
799 | struct ieee80211_channel *new_ch; |
800 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
59eb21a6 BR |
801 | int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num, |
802 | cbss->channel->band); | |
55de908a | 803 | struct ieee80211_chanctx *chanctx; |
cc32abd4 | 804 | |
77fdaa12 JB |
805 | ASSERT_MGD_MTX(ifmgd); |
806 | ||
807 | if (!ifmgd->associated) | |
cc32abd4 JB |
808 | return; |
809 | ||
fbe9c429 | 810 | if (sdata->local->scanning) |
cc32abd4 JB |
811 | return; |
812 | ||
813 | /* Disregard subsequent beacons if we are already running a timer | |
814 | processing a CSA */ | |
815 | ||
816 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) | |
817 | return; | |
818 | ||
819 | new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); | |
882a7c69 JB |
820 | if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) { |
821 | sdata_info(sdata, | |
822 | "AP %pM switches to unsupported channel (%d MHz), disconnecting\n", | |
823 | ifmgd->associated->bssid, new_freq); | |
824 | ieee80211_queue_work(&sdata->local->hw, | |
825 | &ifmgd->csa_connection_drop_work); | |
cc32abd4 | 826 | return; |
882a7c69 | 827 | } |
cc32abd4 | 828 | |
57eebdf3 JB |
829 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; |
830 | ||
55de908a JB |
831 | if (sdata->local->use_chanctx) { |
832 | sdata_info(sdata, | |
833 | "not handling channel switch with channel contexts\n"); | |
834 | ieee80211_queue_work(&sdata->local->hw, | |
835 | &ifmgd->csa_connection_drop_work); | |
246dc3fd | 836 | return; |
55de908a JB |
837 | } |
838 | ||
839 | mutex_lock(&sdata->local->chanctx_mtx); | |
840 | if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { | |
841 | mutex_unlock(&sdata->local->chanctx_mtx); | |
842 | return; | |
843 | } | |
844 | chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), | |
845 | struct ieee80211_chanctx, conf); | |
846 | if (chanctx->refcount > 1) { | |
847 | sdata_info(sdata, | |
848 | "channel switch with multiple interfaces on the same channel, disconnecting\n"); | |
849 | ieee80211_queue_work(&sdata->local->hw, | |
850 | &ifmgd->csa_connection_drop_work); | |
851 | mutex_unlock(&sdata->local->chanctx_mtx); | |
852 | return; | |
853 | } | |
854 | mutex_unlock(&sdata->local->chanctx_mtx); | |
855 | ||
856 | sdata->local->csa_channel = new_ch; | |
857 | ||
57eebdf3 JB |
858 | if (sw_elem->mode) |
859 | ieee80211_stop_queues_by_reason(&sdata->local->hw, | |
860 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
861 | ||
5ce6e438 JB |
862 | if (sdata->local->ops->channel_switch) { |
863 | /* use driver's channel switch callback */ | |
57eebdf3 JB |
864 | struct ieee80211_channel_switch ch_switch = { |
865 | .timestamp = timestamp, | |
866 | .block_tx = sw_elem->mode, | |
867 | .channel = new_ch, | |
868 | .count = sw_elem->count, | |
869 | }; | |
870 | ||
5ce6e438 JB |
871 | drv_channel_switch(sdata->local, &ch_switch); |
872 | return; | |
873 | } | |
874 | ||
875 | /* channel switch handled in software */ | |
57eebdf3 | 876 | if (sw_elem->count <= 1) |
42935eca | 877 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 878 | else |
cc32abd4 | 879 | mod_timer(&ifmgd->chswitch_timer, |
3049000b JB |
880 | TU_TO_EXP_TIME(sw_elem->count * |
881 | cbss->beacon_interval)); | |
cc32abd4 JB |
882 | } |
883 | ||
1ea6f9c0 JB |
884 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
885 | struct ieee80211_channel *channel, | |
886 | const u8 *country_ie, u8 country_ie_len, | |
887 | const u8 *pwr_constr_elem) | |
cc32abd4 | 888 | { |
04b7b2ff JB |
889 | struct ieee80211_country_ie_triplet *triplet; |
890 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
891 | int i, chan_pwr, chan_increment, new_ap_level; | |
892 | bool have_chan_pwr = false; | |
cc32abd4 | 893 | |
04b7b2ff JB |
894 | /* Invalid IE */ |
895 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 896 | return 0; |
cc32abd4 | 897 | |
04b7b2ff JB |
898 | triplet = (void *)(country_ie + 3); |
899 | country_ie_len -= 3; | |
900 | ||
901 | switch (channel->band) { | |
902 | default: | |
903 | WARN_ON_ONCE(1); | |
904 | /* fall through */ | |
905 | case IEEE80211_BAND_2GHZ: | |
906 | case IEEE80211_BAND_60GHZ: | |
907 | chan_increment = 1; | |
908 | break; | |
909 | case IEEE80211_BAND_5GHZ: | |
910 | chan_increment = 4; | |
911 | break; | |
cc32abd4 | 912 | } |
04b7b2ff JB |
913 | |
914 | /* find channel */ | |
915 | while (country_ie_len >= 3) { | |
916 | u8 first_channel = triplet->chans.first_channel; | |
917 | ||
918 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
919 | goto next; | |
920 | ||
921 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
922 | if (first_channel + i * chan_increment == chan) { | |
923 | have_chan_pwr = true; | |
924 | chan_pwr = triplet->chans.max_power; | |
925 | break; | |
926 | } | |
927 | } | |
928 | if (have_chan_pwr) | |
929 | break; | |
930 | ||
931 | next: | |
932 | triplet++; | |
933 | country_ie_len -= 3; | |
934 | } | |
935 | ||
936 | if (!have_chan_pwr) | |
1ea6f9c0 | 937 | return 0; |
04b7b2ff JB |
938 | |
939 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
940 | ||
1ea6f9c0 JB |
941 | if (sdata->ap_power_level == new_ap_level) |
942 | return 0; | |
04b7b2ff JB |
943 | |
944 | sdata_info(sdata, | |
945 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
946 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
947 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
948 | sdata->ap_power_level = new_ap_level; |
949 | if (__ieee80211_recalc_txpower(sdata)) | |
950 | return BSS_CHANGED_TXPOWER; | |
951 | return 0; | |
cc32abd4 JB |
952 | } |
953 | ||
f90754c1 JO |
954 | void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif) |
955 | { | |
956 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
957 | struct ieee80211_local *local = sdata->local; | |
958 | struct ieee80211_conf *conf = &local->hw.conf; | |
959 | ||
960 | WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || | |
961 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || | |
962 | (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); | |
963 | ||
964 | local->disable_dynamic_ps = false; | |
965 | conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout; | |
966 | } | |
967 | EXPORT_SYMBOL(ieee80211_enable_dyn_ps); | |
968 | ||
969 | void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif) | |
970 | { | |
971 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
972 | struct ieee80211_local *local = sdata->local; | |
973 | struct ieee80211_conf *conf = &local->hw.conf; | |
974 | ||
975 | WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || | |
976 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || | |
977 | (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); | |
978 | ||
979 | local->disable_dynamic_ps = true; | |
980 | conf->dynamic_ps_timeout = 0; | |
981 | del_timer_sync(&local->dynamic_ps_timer); | |
982 | ieee80211_queue_work(&local->hw, | |
983 | &local->dynamic_ps_enable_work); | |
984 | } | |
985 | EXPORT_SYMBOL(ieee80211_disable_dyn_ps); | |
986 | ||
965bedad JB |
987 | /* powersave */ |
988 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
989 | struct ieee80211_sub_if_data *sdata) | |
990 | { | |
991 | struct ieee80211_conf *conf = &local->hw.conf; | |
992 | ||
d5edaedc JB |
993 | /* |
994 | * If we are scanning right now then the parameters will | |
995 | * take effect when scan finishes. | |
996 | */ | |
fbe9c429 | 997 | if (local->scanning) |
d5edaedc JB |
998 | return; |
999 | ||
965bedad JB |
1000 | if (conf->dynamic_ps_timeout > 0 && |
1001 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1002 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1003 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1004 | } else { | |
1005 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1006 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1007 | |
2a13052f JO |
1008 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1009 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1010 | return; | |
1011 | ||
1012 | conf->flags |= IEEE80211_CONF_PS; | |
1013 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1014 | } |
1015 | } | |
1016 | ||
1017 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1018 | { | |
1019 | struct ieee80211_conf *conf = &local->hw.conf; | |
1020 | ||
1021 | if (local->ps_sdata) { | |
965bedad JB |
1022 | ieee80211_enable_ps(local, local->ps_sdata); |
1023 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1024 | conf->flags &= ~IEEE80211_CONF_PS; | |
1025 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1026 | del_timer_sync(&local->dynamic_ps_timer); | |
1027 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1028 | } | |
1029 | } | |
1030 | ||
808118cb JY |
1031 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1032 | { | |
1033 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1034 | struct sta_info *sta = NULL; | |
c2c98fde | 1035 | bool authorized = false; |
808118cb JY |
1036 | |
1037 | if (!mgd->powersave) | |
1038 | return false; | |
1039 | ||
05cb9108 JB |
1040 | if (mgd->broken_ap) |
1041 | return false; | |
1042 | ||
808118cb JY |
1043 | if (!mgd->associated) |
1044 | return false; | |
1045 | ||
808118cb JY |
1046 | if (mgd->flags & (IEEE80211_STA_BEACON_POLL | |
1047 | IEEE80211_STA_CONNECTION_POLL)) | |
1048 | return false; | |
1049 | ||
1050 | rcu_read_lock(); | |
1051 | sta = sta_info_get(sdata, mgd->bssid); | |
1052 | if (sta) | |
c2c98fde | 1053 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1054 | rcu_read_unlock(); |
1055 | ||
c2c98fde | 1056 | return authorized; |
808118cb JY |
1057 | } |
1058 | ||
965bedad | 1059 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1060 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1061 | { |
1062 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1063 | int count = 0; | |
195e294d | 1064 | int timeout; |
965bedad JB |
1065 | |
1066 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1067 | local->ps_sdata = NULL; | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1072 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1073 | continue; |
8c7914de RM |
1074 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1075 | /* If an AP vif is found, then disable PS | |
1076 | * by setting the count to zero thereby setting | |
1077 | * ps_sdata to NULL. | |
1078 | */ | |
1079 | count = 0; | |
1080 | break; | |
1081 | } | |
965bedad JB |
1082 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1083 | continue; | |
1084 | found = sdata; | |
1085 | count++; | |
1086 | } | |
1087 | ||
808118cb | 1088 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
f90754c1 | 1089 | struct ieee80211_conf *conf = &local->hw.conf; |
10f644a4 JB |
1090 | s32 beaconint_us; |
1091 | ||
1092 | if (latency < 0) | |
ed77134b | 1093 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1094 | |
1095 | beaconint_us = ieee80211_tu_to_usec( | |
1096 | found->vif.bss_conf.beacon_int); | |
1097 | ||
ff616381 | 1098 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1099 | if (timeout < 0) { |
1100 | /* | |
ff616381 JO |
1101 | * Go to full PSM if the user configures a very low |
1102 | * latency requirement. | |
0ab82b04 EP |
1103 | * The 2000 second value is there for compatibility |
1104 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1105 | * with real values. | |
195e294d | 1106 | */ |
0ab82b04 EP |
1107 | if (latency > (1900 * USEC_PER_MSEC) && |
1108 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1109 | timeout = 0; |
ff616381 JO |
1110 | else |
1111 | timeout = 100; | |
195e294d | 1112 | } |
f90754c1 JO |
1113 | local->dynamic_ps_user_timeout = timeout; |
1114 | if (!local->disable_dynamic_ps) | |
1115 | conf->dynamic_ps_timeout = | |
1116 | local->dynamic_ps_user_timeout; | |
195e294d | 1117 | |
04fe2037 | 1118 | if (beaconint_us > latency) { |
10f644a4 | 1119 | local->ps_sdata = NULL; |
04fe2037 | 1120 | } else { |
04fe2037 | 1121 | int maxslp = 1; |
826262c3 | 1122 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1123 | |
1124 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1125 | if (!dtimper) | |
1126 | dtimper = 1; | |
1127 | else if (dtimper > 1) | |
04fe2037 JB |
1128 | maxslp = min_t(int, dtimper, |
1129 | latency / beaconint_us); | |
1130 | ||
9ccebe61 | 1131 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1132 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1133 | local->ps_sdata = found; |
04fe2037 | 1134 | } |
10f644a4 | 1135 | } else { |
965bedad | 1136 | local->ps_sdata = NULL; |
10f644a4 | 1137 | } |
965bedad JB |
1138 | |
1139 | ieee80211_change_ps(local); | |
1140 | } | |
1141 | ||
ab095877 EP |
1142 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1143 | { | |
1144 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1145 | ||
1146 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1147 | sdata->vif.bss_conf.ps = ps_allowed; | |
1148 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1149 | } | |
1150 | } | |
1151 | ||
965bedad JB |
1152 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1153 | { | |
1154 | struct ieee80211_local *local = | |
1155 | container_of(work, struct ieee80211_local, | |
1156 | dynamic_ps_disable_work); | |
1157 | ||
1158 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1159 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1160 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1161 | } | |
1162 | ||
1163 | ieee80211_wake_queues_by_reason(&local->hw, | |
1164 | IEEE80211_QUEUE_STOP_REASON_PS); | |
1165 | } | |
1166 | ||
1167 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1168 | { | |
1169 | struct ieee80211_local *local = | |
1170 | container_of(work, struct ieee80211_local, | |
1171 | dynamic_ps_enable_work); | |
1172 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1173 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1174 | unsigned long flags; |
1175 | int q; | |
965bedad JB |
1176 | |
1177 | /* can only happen when PS was just disabled anyway */ | |
1178 | if (!sdata) | |
1179 | return; | |
1180 | ||
5e34069c CL |
1181 | ifmgd = &sdata->u.mgd; |
1182 | ||
965bedad JB |
1183 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1184 | return; | |
1185 | ||
77b7023a AN |
1186 | if (!local->disable_dynamic_ps && |
1187 | local->hw.conf.dynamic_ps_timeout > 0) { | |
1188 | /* don't enter PS if TX frames are pending */ | |
1189 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1190 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1191 | msecs_to_jiffies( | |
1192 | local->hw.conf.dynamic_ps_timeout)); | |
1193 | return; | |
1194 | } | |
77b7023a AN |
1195 | |
1196 | /* | |
1197 | * transmission can be stopped by others which leads to | |
1198 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1199 | * is not the actual idle state. | |
1200 | */ | |
1201 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1202 | for (q = 0; q < local->hw.queues; q++) { | |
1203 | if (local->queue_stop_reasons[q]) { | |
1204 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1205 | flags); | |
1206 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1207 | msecs_to_jiffies( | |
1208 | local->hw.conf.dynamic_ps_timeout)); | |
1209 | return; | |
1210 | } | |
1211 | } | |
1212 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1213 | } |
1ddc2867 | 1214 | |
375177bf | 1215 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1216 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
f3e85b9e | 1217 | netif_tx_stop_all_queues(sdata->dev); |
965bedad | 1218 | |
e8306f98 VN |
1219 | if (drv_tx_frames_pending(local)) |
1220 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1221 | msecs_to_jiffies( | |
1222 | local->hw.conf.dynamic_ps_timeout)); | |
1223 | else { | |
1224 | ieee80211_send_nullfunc(local, sdata, 1); | |
1225 | /* Flush to get the tx status of nullfunc frame */ | |
1226 | drv_flush(local, false); | |
1227 | } | |
f3e85b9e VN |
1228 | } |
1229 | ||
2a13052f JO |
1230 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1231 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1232 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1233 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1234 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1235 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1236 | } | |
f3e85b9e | 1237 | |
77b7023a AN |
1238 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
1239 | netif_tx_wake_all_queues(sdata->dev); | |
965bedad JB |
1240 | } |
1241 | ||
1242 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1243 | { | |
1244 | struct ieee80211_local *local = (void *) data; | |
1245 | ||
78f1a8b7 | 1246 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1247 | return; |
1248 | ||
42935eca | 1249 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1250 | } |
1251 | ||
60f8b39c | 1252 | /* MLME */ |
7d25745d | 1253 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1254 | struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1255 | u8 *wmm_param, size_t wmm_param_len) |
1256 | { | |
f0706e82 | 1257 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1258 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1259 | size_t left; |
1260 | int count; | |
ab13315a | 1261 | u8 *pos, uapsd_queues = 0; |
f0706e82 | 1262 | |
e1b3ec1a | 1263 | if (!local->ops->conf_tx) |
7d25745d | 1264 | return false; |
e1b3ec1a | 1265 | |
32c5057b | 1266 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1267 | return false; |
3434fbd3 JB |
1268 | |
1269 | if (!wmm_param) | |
7d25745d | 1270 | return false; |
3434fbd3 | 1271 | |
f0706e82 | 1272 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1273 | return false; |
ab13315a KV |
1274 | |
1275 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1276 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1277 | |
f0706e82 | 1278 | count = wmm_param[6] & 0x0f; |
46900298 | 1279 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1280 | return false; |
46900298 | 1281 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1282 | |
1283 | pos = wmm_param + 8; | |
1284 | left = wmm_param_len - 8; | |
1285 | ||
1286 | memset(¶ms, 0, sizeof(params)); | |
1287 | ||
00e96dec | 1288 | sdata->wmm_acm = 0; |
f0706e82 JB |
1289 | for (; left >= 4; left -= 4, pos += 4) { |
1290 | int aci = (pos[0] >> 5) & 0x03; | |
1291 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1292 | bool uapsd = false; |
f0706e82 JB |
1293 | int queue; |
1294 | ||
1295 | switch (aci) { | |
0eeb59fe | 1296 | case 1: /* AC_BK */ |
e100bb64 | 1297 | queue = 3; |
988c0f72 | 1298 | if (acm) |
00e96dec | 1299 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1300 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1301 | uapsd = true; | |
f0706e82 | 1302 | break; |
0eeb59fe | 1303 | case 2: /* AC_VI */ |
e100bb64 | 1304 | queue = 1; |
988c0f72 | 1305 | if (acm) |
00e96dec | 1306 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1307 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1308 | uapsd = true; | |
f0706e82 | 1309 | break; |
0eeb59fe | 1310 | case 3: /* AC_VO */ |
e100bb64 | 1311 | queue = 0; |
988c0f72 | 1312 | if (acm) |
00e96dec | 1313 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1314 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1315 | uapsd = true; | |
f0706e82 | 1316 | break; |
0eeb59fe | 1317 | case 0: /* AC_BE */ |
f0706e82 | 1318 | default: |
e100bb64 | 1319 | queue = 2; |
988c0f72 | 1320 | if (acm) |
00e96dec | 1321 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1322 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1323 | uapsd = true; | |
f0706e82 JB |
1324 | break; |
1325 | } | |
1326 | ||
1327 | params.aifs = pos[0] & 0x0f; | |
1328 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1329 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1330 | params.txop = get_unaligned_le16(pos + 2); |
ab13315a KV |
1331 | params.uapsd = uapsd; |
1332 | ||
bdcbd8e0 JB |
1333 | mlme_dbg(sdata, |
1334 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1335 | queue, aci, acm, | |
1336 | params.aifs, params.cw_min, params.cw_max, | |
1337 | params.txop, params.uapsd); | |
f6f3def3 EP |
1338 | sdata->tx_conf[queue] = params; |
1339 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1340 | sdata_err(sdata, |
1341 | "failed to set TX queue parameters for queue %d\n", | |
1342 | queue); | |
f0706e82 | 1343 | } |
e1b3ec1a SG |
1344 | |
1345 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1346 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1347 | return true; |
f0706e82 JB |
1348 | } |
1349 | ||
925e64c3 SG |
1350 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1351 | { | |
1352 | lockdep_assert_held(&sdata->local->mtx); | |
1353 | ||
1354 | sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
1355 | IEEE80211_STA_BEACON_POLL); | |
1356 | ieee80211_run_deferred_scan(sdata->local); | |
1357 | } | |
1358 | ||
1359 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1360 | { | |
1361 | mutex_lock(&sdata->local->mtx); | |
1362 | __ieee80211_stop_poll(sdata); | |
1363 | mutex_unlock(&sdata->local->mtx); | |
1364 | } | |
1365 | ||
7a5158ef JB |
1366 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1367 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1368 | { |
bda3933a | 1369 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1370 | u32 changed = 0; |
7a5158ef JB |
1371 | bool use_protection; |
1372 | bool use_short_preamble; | |
1373 | bool use_short_slot; | |
1374 | ||
1375 | if (erp_valid) { | |
1376 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1377 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1378 | } else { | |
1379 | use_protection = false; | |
1380 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1381 | } | |
1382 | ||
1383 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1384 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1385 | use_short_slot = true; |
5628221c | 1386 | |
471b3efd | 1387 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1388 | bss_conf->use_cts_prot = use_protection; |
1389 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1390 | } |
7e9ed188 | 1391 | |
d43c7b37 | 1392 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1393 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1394 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1395 | } |
d9430a32 | 1396 | |
7a5158ef | 1397 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1398 | bss_conf->use_short_slot = use_short_slot; |
1399 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1400 | } |
1401 | ||
1402 | return changed; | |
1403 | } | |
1404 | ||
f698d856 | 1405 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1406 | struct cfg80211_bss *cbss, |
ae5eb026 | 1407 | u32 bss_info_changed) |
f0706e82 | 1408 | { |
0c1ad2ca | 1409 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1410 | struct ieee80211_local *local = sdata->local; |
68542962 | 1411 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1412 | |
ae5eb026 | 1413 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1414 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1415 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1416 | |
7ccc8bd7 FF |
1417 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
1418 | IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int)); | |
1419 | ||
0c1ad2ca JB |
1420 | sdata->u.mgd.associated = cbss; |
1421 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1422 | |
17e4ec14 JM |
1423 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1424 | ||
488dd7b5 | 1425 | if (sdata->vif.p2p) { |
9caf0364 | 1426 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1427 | |
9caf0364 JB |
1428 | rcu_read_lock(); |
1429 | ies = rcu_dereference(cbss->ies); | |
1430 | if (ies) { | |
1431 | u8 noa[2]; | |
1432 | int ret; | |
1433 | ||
1434 | ret = cfg80211_get_p2p_attr( | |
1435 | ies->data, ies->len, | |
1436 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
1437 | noa, sizeof(noa)); | |
1438 | if (ret >= 2) { | |
1439 | bss_conf->p2p_oppps = noa[1] & 0x80; | |
1440 | bss_conf->p2p_ctwindow = noa[1] & 0x7f; | |
1441 | bss_info_changed |= BSS_CHANGED_P2P_PS; | |
1442 | sdata->u.mgd.p2p_noa_index = noa[0]; | |
1443 | } | |
488dd7b5 | 1444 | } |
9caf0364 | 1445 | rcu_read_unlock(); |
488dd7b5 JB |
1446 | } |
1447 | ||
b291ba11 | 1448 | /* just to be sure */ |
925e64c3 | 1449 | ieee80211_stop_poll(sdata); |
b291ba11 | 1450 | |
9ac19a90 | 1451 | ieee80211_led_assoc(local, 1); |
9306102e | 1452 | |
c65dd147 | 1453 | if (sdata->u.mgd.assoc_data->have_beacon) { |
826262c3 JB |
1454 | /* |
1455 | * If the AP is buggy we may get here with no DTIM period | |
1456 | * known, so assume it's 1 which is the only safe assumption | |
1457 | * in that case, although if the TIM IE is broken powersave | |
1458 | * probably just won't work at all. | |
1459 | */ | |
1460 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
c65dd147 | 1461 | bss_info_changed |= BSS_CHANGED_DTIM_PERIOD; |
826262c3 | 1462 | } else { |
e5b900d2 | 1463 | bss_conf->dtim_period = 0; |
826262c3 | 1464 | } |
e5b900d2 | 1465 | |
68542962 | 1466 | bss_conf->assoc = 1; |
9cef8737 | 1467 | |
a97c13c3 | 1468 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1469 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1470 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1471 | bss_info_changed |= BSS_CHANGED_CQM; |
1472 | ||
68542962 | 1473 | /* Enable ARP filtering */ |
0f19b41e | 1474 | if (bss_conf->arp_addr_cnt) |
68542962 | 1475 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1476 | |
ae5eb026 | 1477 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1478 | |
056508dc JB |
1479 | mutex_lock(&local->iflist_mtx); |
1480 | ieee80211_recalc_ps(local, -1); | |
1481 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1482 | |
04ecd257 | 1483 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1484 | ieee80211_recalc_ps_vif(sdata); |
1485 | ||
8a5b33f5 | 1486 | netif_tx_start_all_queues(sdata->dev); |
9ac19a90 | 1487 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1488 | } |
1489 | ||
e69e95db | 1490 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1491 | u16 stype, u16 reason, bool tx, |
1492 | u8 *frame_buf) | |
aa458d17 | 1493 | { |
46900298 | 1494 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1495 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1496 | u32 changed = 0; |
aa458d17 | 1497 | |
77fdaa12 JB |
1498 | ASSERT_MGD_MTX(ifmgd); |
1499 | ||
37ad3888 JB |
1500 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1501 | return; | |
1502 | ||
b291ba11 JB |
1503 | if (WARN_ON(!ifmgd->associated)) |
1504 | return; | |
1505 | ||
79543d8e DS |
1506 | ieee80211_stop_poll(sdata); |
1507 | ||
77fdaa12 | 1508 | ifmgd->associated = NULL; |
77fdaa12 JB |
1509 | |
1510 | /* | |
1511 | * we need to commit the associated = NULL change because the | |
1512 | * scan code uses that to determine whether this iface should | |
1513 | * go to/wake up from powersave or not -- and could otherwise | |
1514 | * wake the queues erroneously. | |
1515 | */ | |
1516 | smp_mb(); | |
1517 | ||
1518 | /* | |
1519 | * Thus, we can only afterwards stop the queues -- to account | |
1520 | * for the case where another CPU is finishing a scan at this | |
1521 | * time -- we don't want the scan code to enable queues. | |
1522 | */ | |
aa458d17 | 1523 | |
8a5b33f5 | 1524 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
1525 | netif_carrier_off(sdata->dev); |
1526 | ||
88bc40e8 EP |
1527 | /* |
1528 | * if we want to get out of ps before disassoc (why?) we have | |
1529 | * to do it before sending disassoc, as otherwise the null-packet | |
1530 | * won't be valid. | |
1531 | */ | |
1532 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1533 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1534 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1535 | } | |
1536 | local->ps_sdata = NULL; | |
1537 | ||
ab095877 EP |
1538 | /* disable per-vif ps */ |
1539 | ieee80211_recalc_ps_vif(sdata); | |
1540 | ||
f823981e EP |
1541 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1542 | if (tx) | |
1543 | drv_flush(local, false); | |
1544 | ||
37ad3888 JB |
1545 | /* deauthenticate/disassociate now */ |
1546 | if (tx || frame_buf) | |
88a9e31c EP |
1547 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1548 | reason, tx, frame_buf); | |
37ad3888 JB |
1549 | |
1550 | /* flush out frame */ | |
1551 | if (tx) | |
1552 | drv_flush(local, false); | |
1553 | ||
88a9e31c EP |
1554 | /* clear bssid only after building the needed mgmt frames */ |
1555 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1556 | ||
37ad3888 | 1557 | /* remove AP and TDLS peers */ |
051007d9 | 1558 | sta_info_flush_defer(sdata); |
37ad3888 JB |
1559 | |
1560 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1561 | changed |= ieee80211_reset_erp_info(sdata); |
1562 | ||
f5e5bf25 | 1563 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1564 | changed |= BSS_CHANGED_ASSOC; |
1565 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1566 | |
488dd7b5 JB |
1567 | sdata->vif.bss_conf.p2p_ctwindow = 0; |
1568 | sdata->vif.bss_conf.p2p_oppps = false; | |
1569 | ||
413ad50a | 1570 | /* on the next assoc, re-program HT parameters */ |
ef96a842 BG |
1571 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1572 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
413ad50a | 1573 | |
1ea6f9c0 | 1574 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1575 | |
520eb820 KV |
1576 | del_timer_sync(&local->dynamic_ps_timer); |
1577 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1578 | ||
68542962 | 1579 | /* Disable ARP filtering */ |
0f19b41e | 1580 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1581 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1582 | |
3abead59 JB |
1583 | sdata->vif.bss_conf.qos = false; |
1584 | changed |= BSS_CHANGED_QOS; | |
1585 | ||
0aaffa9b JB |
1586 | /* The BSSID (not really interesting) and HT changed */ |
1587 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1588 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1589 | |
3abead59 JB |
1590 | /* disassociated - set to defaults now */ |
1591 | ieee80211_set_wmm_default(sdata, false); | |
1592 | ||
b9dcf712 JB |
1593 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1594 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1595 | del_timer_sync(&sdata->u.mgd.timer); | |
1596 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc JB |
1597 | |
1598 | sdata->u.mgd.timers_running = 0; | |
028e8da0 | 1599 | |
826262c3 JB |
1600 | sdata->vif.bss_conf.dtim_period = 0; |
1601 | ||
028e8da0 JB |
1602 | ifmgd->flags = 0; |
1603 | ieee80211_vif_release_channel(sdata); | |
aa458d17 | 1604 | } |
f0706e82 | 1605 | |
3cf335d5 KV |
1606 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1607 | struct ieee80211_hdr *hdr) | |
1608 | { | |
1609 | /* | |
1610 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1611 | * from AP because we know that the connection is working both ways | |
1612 | * at that time. But multicast frames (and hence also beacons) must | |
1613 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1614 | * data idle periods for sending the periodic probe request to the |
1615 | * AP we're connected to. | |
3cf335d5 | 1616 | */ |
b291ba11 JB |
1617 | if (is_multicast_ether_addr(hdr->addr1)) |
1618 | return; | |
1619 | ||
be099e82 | 1620 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1621 | } |
f0706e82 | 1622 | |
4e5ff376 FF |
1623 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1624 | { | |
1625 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1626 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1627 | |
133d40f9 | 1628 | mutex_lock(&local->mtx); |
4e5ff376 | 1629 | if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
133d40f9 SG |
1630 | IEEE80211_STA_CONNECTION_POLL))) { |
1631 | mutex_unlock(&local->mtx); | |
1632 | return; | |
1633 | } | |
4e5ff376 | 1634 | |
925e64c3 | 1635 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1636 | |
1637 | mutex_lock(&local->iflist_mtx); | |
1638 | ieee80211_recalc_ps(local, -1); | |
1639 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1640 | |
1641 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1642 | goto out; |
4e5ff376 FF |
1643 | |
1644 | /* | |
1645 | * We've received a probe response, but are not sure whether | |
1646 | * we have or will be receiving any beacons or data, so let's | |
1647 | * schedule the timers again, just in case. | |
1648 | */ | |
1649 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1650 | ||
1651 | mod_timer(&ifmgd->conn_mon_timer, | |
1652 | round_jiffies_up(jiffies + | |
1653 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1654 | out: |
133d40f9 | 1655 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1656 | } |
1657 | ||
1658 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1659 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1660 | { |
75706d0e | 1661 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1662 | return; |
1663 | ||
04ac3c0e FF |
1664 | if (ack) |
1665 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1666 | |
1667 | if (ieee80211_is_nullfunc(hdr->frame_control) && | |
1668 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e FF |
1669 | if (ack) |
1670 | sdata->u.mgd.probe_send_count = 0; | |
1671 | else | |
1672 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 FF |
1673 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
1674 | } | |
1675 | } | |
1676 | ||
a43abf29 ML |
1677 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1678 | { | |
1679 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1680 | const u8 *ssid; | |
f01a067d | 1681 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1682 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
1683 | |
1684 | /* | |
1685 | * Try sending broadcast probe requests for the last three | |
1686 | * probe requests after the first ones failed since some | |
1687 | * buggy APs only support broadcast probe requests. | |
1688 | */ | |
1689 | if (ifmgd->probe_send_count >= unicast_limit) | |
1690 | dst = NULL; | |
a43abf29 | 1691 | |
4e5ff376 FF |
1692 | /* |
1693 | * When the hardware reports an accurate Tx ACK status, it's | |
1694 | * better to send a nullfunc frame instead of a probe request, | |
1695 | * as it will kick us off the AP quickly if we aren't associated | |
1696 | * anymore. The timeout will be reset if the frame is ACKed by | |
1697 | * the AP. | |
1698 | */ | |
992e68bf SD |
1699 | ifmgd->probe_send_count++; |
1700 | ||
04ac3c0e FF |
1701 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
1702 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 1703 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 1704 | } else { |
88c868c4 SG |
1705 | int ssid_len; |
1706 | ||
9caf0364 | 1707 | rcu_read_lock(); |
4e5ff376 | 1708 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
1709 | if (WARN_ON_ONCE(ssid == NULL)) |
1710 | ssid_len = 0; | |
1711 | else | |
1712 | ssid_len = ssid[1]; | |
1713 | ||
1714 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 1715 | 0, (u32) -1, true, 0, |
55de908a | 1716 | ifmgd->associated->channel, false); |
9caf0364 | 1717 | rcu_read_unlock(); |
4e5ff376 | 1718 | } |
a43abf29 | 1719 | |
180205bd | 1720 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
a43abf29 | 1721 | run_again(ifmgd, ifmgd->probe_timeout); |
f69b9c79 RM |
1722 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
1723 | drv_flush(sdata->local, false); | |
a43abf29 ML |
1724 | } |
1725 | ||
b291ba11 JB |
1726 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
1727 | bool beacon) | |
04de8381 | 1728 | { |
04de8381 | 1729 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 1730 | bool already = false; |
34bfc411 | 1731 | |
9607e6b6 | 1732 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
1733 | return; |
1734 | ||
77fdaa12 JB |
1735 | mutex_lock(&ifmgd->mtx); |
1736 | ||
1737 | if (!ifmgd->associated) | |
1738 | goto out; | |
1739 | ||
133d40f9 SG |
1740 | mutex_lock(&sdata->local->mtx); |
1741 | ||
1742 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
1743 | mutex_unlock(&sdata->local->mtx); | |
1744 | goto out; | |
1745 | } | |
1746 | ||
e87cc472 | 1747 | if (beacon) |
bdcbd8e0 JB |
1748 | mlme_dbg_ratelimited(sdata, |
1749 | "detected beacon loss from AP - sending probe request\n"); | |
1750 | ||
6efb71b0 HS |
1751 | ieee80211_cqm_rssi_notify(&sdata->vif, |
1752 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL); | |
04de8381 | 1753 | |
b291ba11 JB |
1754 | /* |
1755 | * The driver/our work has already reported this event or the | |
1756 | * connection monitoring has kicked in and we have already sent | |
1757 | * a probe request. Or maybe the AP died and the driver keeps | |
1758 | * reporting until we disassociate... | |
1759 | * | |
1760 | * In either case we have to ignore the current call to this | |
1761 | * function (except for setting the correct probe reason bit) | |
1762 | * because otherwise we would reset the timer every time and | |
1763 | * never check whether we received a probe response! | |
1764 | */ | |
1765 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | | |
1766 | IEEE80211_STA_CONNECTION_POLL)) | |
1767 | already = true; | |
1768 | ||
1769 | if (beacon) | |
1770 | ifmgd->flags |= IEEE80211_STA_BEACON_POLL; | |
1771 | else | |
1772 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; | |
1773 | ||
133d40f9 SG |
1774 | mutex_unlock(&sdata->local->mtx); |
1775 | ||
b291ba11 JB |
1776 | if (already) |
1777 | goto out; | |
1778 | ||
4e751843 JB |
1779 | mutex_lock(&sdata->local->iflist_mtx); |
1780 | ieee80211_recalc_ps(sdata->local, -1); | |
1781 | mutex_unlock(&sdata->local->iflist_mtx); | |
1782 | ||
a43abf29 ML |
1783 | ifmgd->probe_send_count = 0; |
1784 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 JB |
1785 | out: |
1786 | mutex_unlock(&ifmgd->mtx); | |
04de8381 KV |
1787 | } |
1788 | ||
a619a4c0 JO |
1789 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
1790 | struct ieee80211_vif *vif) | |
1791 | { | |
1792 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1793 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 1794 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
1795 | struct sk_buff *skb; |
1796 | const u8 *ssid; | |
88c868c4 | 1797 | int ssid_len; |
a619a4c0 JO |
1798 | |
1799 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1800 | return NULL; | |
1801 | ||
1802 | ASSERT_MGD_MTX(ifmgd); | |
1803 | ||
d9b3b28b EP |
1804 | if (ifmgd->associated) |
1805 | cbss = ifmgd->associated; | |
1806 | else if (ifmgd->auth_data) | |
1807 | cbss = ifmgd->auth_data->bss; | |
1808 | else if (ifmgd->assoc_data) | |
1809 | cbss = ifmgd->assoc_data->bss; | |
1810 | else | |
a619a4c0 JO |
1811 | return NULL; |
1812 | ||
9caf0364 | 1813 | rcu_read_lock(); |
d9b3b28b | 1814 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
1815 | if (WARN_ON_ONCE(ssid == NULL)) |
1816 | ssid_len = 0; | |
1817 | else | |
1818 | ssid_len = ssid[1]; | |
1819 | ||
d9b3b28b | 1820 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 1821 | (u32) -1, cbss->channel, |
6b77863b | 1822 | ssid + 2, ssid_len, |
85a237fe | 1823 | NULL, 0, true); |
9caf0364 | 1824 | rcu_read_unlock(); |
a619a4c0 JO |
1825 | |
1826 | return skb; | |
1827 | } | |
1828 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
1829 | ||
882a7c69 JB |
1830 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata, |
1831 | bool transmit_frame) | |
1e4dcd01 JO |
1832 | { |
1833 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1834 | struct ieee80211_local *local = sdata->local; | |
6ae16775 | 1835 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 JO |
1836 | |
1837 | mutex_lock(&ifmgd->mtx); | |
1838 | if (!ifmgd->associated) { | |
1839 | mutex_unlock(&ifmgd->mtx); | |
1840 | return; | |
1841 | } | |
1842 | ||
37ad3888 JB |
1843 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
1844 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
882a7c69 JB |
1845 | transmit_frame, frame_buf); |
1846 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
1e4dcd01 | 1847 | mutex_unlock(&ifmgd->mtx); |
7da7cc1d | 1848 | |
1e4dcd01 JO |
1849 | /* |
1850 | * must be outside lock due to cfg80211, | |
1851 | * but that's not a problem. | |
1852 | */ | |
6ae16775 | 1853 | cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); |
fcac4fb0 FF |
1854 | |
1855 | mutex_lock(&local->mtx); | |
1856 | ieee80211_recalc_idle(local); | |
1857 | mutex_unlock(&local->mtx); | |
1e4dcd01 JO |
1858 | } |
1859 | ||
cc74c0c7 | 1860 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
1861 | { |
1862 | struct ieee80211_sub_if_data *sdata = | |
1863 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 1864 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
1865 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
1866 | struct sta_info *sta; | |
1867 | ||
1868 | if (ifmgd->associated) { | |
30fa9047 | 1869 | rcu_read_lock(); |
a85e1d55 PS |
1870 | sta = sta_info_get(sdata, ifmgd->bssid); |
1871 | if (sta) | |
1872 | sta->beacon_loss_count++; | |
30fa9047 | 1873 | rcu_read_unlock(); |
a85e1d55 | 1874 | } |
b291ba11 | 1875 | |
882a7c69 JB |
1876 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) { |
1877 | sdata_info(sdata, "Connection to AP %pM lost\n", | |
1878 | ifmgd->bssid); | |
1879 | __ieee80211_disconnect(sdata, false); | |
1880 | } else { | |
1e4dcd01 | 1881 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
1882 | } |
1883 | } | |
1884 | ||
1885 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
1886 | { | |
1887 | struct ieee80211_sub_if_data *sdata = | |
1888 | container_of(work, struct ieee80211_sub_if_data, | |
1889 | u.mgd.csa_connection_drop_work); | |
1890 | ||
1891 | ieee80211_wake_queues_by_reason(&sdata->local->hw, | |
1892 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1893 | __ieee80211_disconnect(sdata, true); | |
b291ba11 JB |
1894 | } |
1895 | ||
04de8381 KV |
1896 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
1897 | { | |
1898 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 1899 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 1900 | |
b5878a2d JB |
1901 | trace_api_beacon_loss(sdata); |
1902 | ||
1e4dcd01 JO |
1903 | WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR); |
1904 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); | |
04de8381 KV |
1905 | } |
1906 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
1907 | ||
1e4dcd01 JO |
1908 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
1909 | { | |
1910 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1911 | struct ieee80211_hw *hw = &sdata->local->hw; | |
1912 | ||
b5878a2d JB |
1913 | trace_api_connection_loss(sdata); |
1914 | ||
1e4dcd01 JO |
1915 | WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR)); |
1916 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); | |
1917 | } | |
1918 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
1919 | ||
1920 | ||
66e67e41 JB |
1921 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
1922 | bool assoc) | |
1923 | { | |
1924 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
1925 | ||
1926 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
1927 | ||
66e67e41 JB |
1928 | if (!assoc) { |
1929 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
1930 | ||
1931 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
1932 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 1933 | sdata->u.mgd.flags = 0; |
55de908a | 1934 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
1935 | } |
1936 | ||
1937 | cfg80211_put_bss(auth_data->bss); | |
1938 | kfree(auth_data); | |
1939 | sdata->u.mgd.auth_data = NULL; | |
1940 | } | |
1941 | ||
1942 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
1943 | struct ieee80211_mgmt *mgmt, size_t len) | |
1944 | { | |
1672c0e3 | 1945 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
1946 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
1947 | u8 *pos; | |
1948 | struct ieee802_11_elems elems; | |
1672c0e3 | 1949 | u32 tx_flags = 0; |
66e67e41 JB |
1950 | |
1951 | pos = mgmt->u.auth.variable; | |
1952 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
1953 | if (!elems.challenge) | |
1954 | return; | |
1955 | auth_data->expected_transaction = 4; | |
a1845fc7 | 1956 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
1957 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
1958 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
1959 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 1960 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
1961 | elems.challenge - 2, elems.challenge_len + 2, |
1962 | auth_data->bss->bssid, auth_data->bss->bssid, | |
1963 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 1964 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
1965 | } |
1966 | ||
1967 | static enum rx_mgmt_action __must_check | |
1968 | ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, | |
1969 | struct ieee80211_mgmt *mgmt, size_t len) | |
1970 | { | |
1971 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1972 | u8 bssid[ETH_ALEN]; | |
1973 | u16 auth_alg, auth_transaction, status_code; | |
1974 | struct sta_info *sta; | |
1975 | ||
1976 | lockdep_assert_held(&ifmgd->mtx); | |
1977 | ||
1978 | if (len < 24 + 6) | |
1979 | return RX_MGMT_NONE; | |
1980 | ||
1981 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
1982 | return RX_MGMT_NONE; | |
1983 | ||
1984 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
1985 | ||
b203ca39 | 1986 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
66e67e41 JB |
1987 | return RX_MGMT_NONE; |
1988 | ||
1989 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1990 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1991 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1992 | ||
1993 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
1994 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
1995 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
1996 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
1997 | auth_transaction, | |
1998 | ifmgd->auth_data->expected_transaction); | |
66e67e41 | 1999 | return RX_MGMT_NONE; |
0f4126e8 | 2000 | } |
66e67e41 JB |
2001 | |
2002 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2003 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2004 | mgmt->sa, status_code); | |
dac211ec EP |
2005 | ieee80211_destroy_auth_data(sdata, false); |
2006 | return RX_MGMT_CFG80211_RX_AUTH; | |
66e67e41 JB |
2007 | } |
2008 | ||
2009 | switch (ifmgd->auth_data->algorithm) { | |
2010 | case WLAN_AUTH_OPEN: | |
2011 | case WLAN_AUTH_LEAP: | |
2012 | case WLAN_AUTH_FT: | |
6b8ece3a | 2013 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2014 | break; |
2015 | case WLAN_AUTH_SHARED_KEY: | |
2016 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2017 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2018 | /* need another frame */ | |
2019 | return RX_MGMT_NONE; | |
2020 | } | |
2021 | break; | |
2022 | default: | |
2023 | WARN_ONCE(1, "invalid auth alg %d", | |
2024 | ifmgd->auth_data->algorithm); | |
2025 | return RX_MGMT_NONE; | |
2026 | } | |
2027 | ||
bdcbd8e0 | 2028 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2029 | ifmgd->auth_data->done = true; |
2030 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
2031 | run_again(ifmgd, ifmgd->auth_data->timeout); | |
2032 | ||
6b8ece3a JM |
2033 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2034 | ifmgd->auth_data->expected_transaction != 2) { | |
2035 | /* | |
2036 | * Report auth frame to user space for processing since another | |
2037 | * round of Authentication frames is still needed. | |
2038 | */ | |
2039 | return RX_MGMT_CFG80211_RX_AUTH; | |
2040 | } | |
2041 | ||
66e67e41 JB |
2042 | /* move station state to auth */ |
2043 | mutex_lock(&sdata->local->sta_mtx); | |
2044 | sta = sta_info_get(sdata, bssid); | |
2045 | if (!sta) { | |
2046 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2047 | goto out_err; | |
2048 | } | |
2049 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2050 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2051 | goto out_err; |
2052 | } | |
2053 | mutex_unlock(&sdata->local->sta_mtx); | |
2054 | ||
2055 | return RX_MGMT_CFG80211_RX_AUTH; | |
2056 | out_err: | |
2057 | mutex_unlock(&sdata->local->sta_mtx); | |
2058 | /* ignore frame -- wait for timeout */ | |
2059 | return RX_MGMT_NONE; | |
2060 | } | |
2061 | ||
2062 | ||
77fdaa12 JB |
2063 | static enum rx_mgmt_action __must_check |
2064 | ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, | |
77fdaa12 | 2065 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2066 | { |
46900298 | 2067 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2068 | const u8 *bssid = NULL; |
f0706e82 JB |
2069 | u16 reason_code; |
2070 | ||
66e67e41 JB |
2071 | lockdep_assert_held(&ifmgd->mtx); |
2072 | ||
f4ea83dd | 2073 | if (len < 24 + 2) |
77fdaa12 | 2074 | return RX_MGMT_NONE; |
f0706e82 | 2075 | |
66e67e41 | 2076 | if (!ifmgd->associated || |
b203ca39 | 2077 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
66e67e41 | 2078 | return RX_MGMT_NONE; |
77fdaa12 | 2079 | |
0c1ad2ca | 2080 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2081 | |
2082 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2083 | ||
bdcbd8e0 JB |
2084 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n", |
2085 | bssid, reason_code); | |
77fdaa12 | 2086 | |
37ad3888 JB |
2087 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2088 | ||
7da7cc1d | 2089 | mutex_lock(&sdata->local->mtx); |
63f170e0 | 2090 | ieee80211_recalc_idle(sdata->local); |
7da7cc1d | 2091 | mutex_unlock(&sdata->local->mtx); |
f0706e82 | 2092 | |
77fdaa12 | 2093 | return RX_MGMT_CFG80211_DEAUTH; |
f0706e82 JB |
2094 | } |
2095 | ||
2096 | ||
77fdaa12 JB |
2097 | static enum rx_mgmt_action __must_check |
2098 | ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, | |
2099 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2100 | { |
46900298 | 2101 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2102 | u16 reason_code; |
2103 | ||
66e67e41 | 2104 | lockdep_assert_held(&ifmgd->mtx); |
77fdaa12 | 2105 | |
66e67e41 | 2106 | if (len < 24 + 2) |
77fdaa12 JB |
2107 | return RX_MGMT_NONE; |
2108 | ||
66e67e41 | 2109 | if (!ifmgd->associated || |
b203ca39 | 2110 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
77fdaa12 | 2111 | return RX_MGMT_NONE; |
f0706e82 JB |
2112 | |
2113 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2114 | ||
bdcbd8e0 JB |
2115 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2116 | mgmt->sa, reason_code); | |
f0706e82 | 2117 | |
37ad3888 JB |
2118 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2119 | ||
7da7cc1d | 2120 | mutex_lock(&sdata->local->mtx); |
bc83b681 | 2121 | ieee80211_recalc_idle(sdata->local); |
7da7cc1d | 2122 | mutex_unlock(&sdata->local->mtx); |
37ad3888 | 2123 | |
77fdaa12 | 2124 | return RX_MGMT_CFG80211_DISASSOC; |
f0706e82 JB |
2125 | } |
2126 | ||
c74d084f CL |
2127 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2128 | u8 *supp_rates, unsigned int supp_rates_len, | |
2129 | u32 *rates, u32 *basic_rates, | |
2130 | bool *have_higher_than_11mbit, | |
2131 | int *min_rate, int *min_rate_index) | |
2132 | { | |
2133 | int i, j; | |
2134 | ||
2135 | for (i = 0; i < supp_rates_len; i++) { | |
2136 | int rate = (supp_rates[i] & 0x7f) * 5; | |
2137 | bool is_basic = !!(supp_rates[i] & 0x80); | |
2138 | ||
2139 | if (rate > 110) | |
2140 | *have_higher_than_11mbit = true; | |
2141 | ||
2142 | /* | |
2143 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2144 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2145 | * | |
2146 | * Note: Even through the membership selector and the basic | |
2147 | * rate flag share the same bit, they are not exactly | |
2148 | * the same. | |
2149 | */ | |
2150 | if (!!(supp_rates[i] & 0x80) && | |
2151 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2152 | continue; | |
2153 | ||
2154 | for (j = 0; j < sband->n_bitrates; j++) { | |
2155 | if (sband->bitrates[j].bitrate == rate) { | |
2156 | *rates |= BIT(j); | |
2157 | if (is_basic) | |
2158 | *basic_rates |= BIT(j); | |
2159 | if (rate < *min_rate) { | |
2160 | *min_rate = rate; | |
2161 | *min_rate_index = j; | |
2162 | } | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | } | |
2167 | } | |
f0706e82 | 2168 | |
66e67e41 JB |
2169 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2170 | bool assoc) | |
2171 | { | |
2172 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2173 | ||
2174 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
2175 | ||
66e67e41 JB |
2176 | if (!assoc) { |
2177 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2178 | ||
2179 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2180 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2181 | sdata->u.mgd.flags = 0; |
55de908a | 2182 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
2183 | } |
2184 | ||
2185 | kfree(assoc_data); | |
2186 | sdata->u.mgd.assoc_data = NULL; | |
2187 | } | |
2188 | ||
2189 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2190 | struct cfg80211_bss *cbss, | |
af6b6374 | 2191 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2192 | { |
46900298 | 2193 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2194 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2195 | struct ieee80211_supported_band *sband; |
f0706e82 | 2196 | struct sta_info *sta; |
af6b6374 | 2197 | u8 *pos; |
af6b6374 | 2198 | u16 capab_info, aid; |
f0706e82 | 2199 | struct ieee802_11_elems elems; |
bda3933a | 2200 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ae5eb026 | 2201 | u32 changed = 0; |
c74d084f | 2202 | int err; |
f0706e82 | 2203 | |
af6b6374 | 2204 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2205 | |
f0706e82 | 2206 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2207 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2208 | |
1dd84aa2 | 2209 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2210 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2211 | aid); | |
1dd84aa2 JB |
2212 | aid &= ~(BIT(15) | BIT(14)); |
2213 | ||
05cb9108 JB |
2214 | ifmgd->broken_ap = false; |
2215 | ||
2216 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2217 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2218 | aid); | |
05cb9108 JB |
2219 | aid = 0; |
2220 | ifmgd->broken_ap = true; | |
2221 | } | |
2222 | ||
af6b6374 JB |
2223 | pos = mgmt->u.assoc_resp.variable; |
2224 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
2225 | ||
f0706e82 | 2226 | if (!elems.supp_rates) { |
bdcbd8e0 | 2227 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2228 | return false; |
f0706e82 JB |
2229 | } |
2230 | ||
46900298 | 2231 | ifmgd->aid = aid; |
f0706e82 | 2232 | |
2a33bee2 GE |
2233 | mutex_lock(&sdata->local->sta_mtx); |
2234 | /* | |
2235 | * station info was already allocated and inserted before | |
2236 | * the association and should be available to us | |
2237 | */ | |
7852e361 | 2238 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2239 | if (WARN_ON(!sta)) { |
2240 | mutex_unlock(&sdata->local->sta_mtx); | |
af6b6374 | 2241 | return false; |
77fdaa12 | 2242 | } |
05e5e883 | 2243 | |
55de908a | 2244 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2245 | |
a8243b72 | 2246 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2247 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
d9fe60de | 2248 | elems.ht_cap_elem, &sta->sta.ht_cap); |
ae5eb026 | 2249 | |
64f68e5d JB |
2250 | sta->supports_40mhz = |
2251 | sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
2252 | ||
818255ea MP |
2253 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2254 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
2255 | elems.vht_cap_elem, | |
2256 | &sta->sta.vht_cap); | |
2257 | ||
4b7679a5 | 2258 | rate_control_rate_init(sta); |
f0706e82 | 2259 | |
46900298 | 2260 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2261 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2262 | |
ddf4ac53 | 2263 | if (elems.wmm_param) |
c2c98fde | 2264 | set_sta_flag(sta, WLAN_STA_WME); |
ddf4ac53 | 2265 | |
c8987876 JB |
2266 | err = sta_info_move_state(sta, IEEE80211_STA_AUTH); |
2267 | if (!err) | |
2268 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); | |
2269 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) | |
2270 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2271 | if (err) { | |
bdcbd8e0 JB |
2272 | sdata_info(sdata, |
2273 | "failed to move station %pM to desired state\n", | |
2274 | sta->sta.addr); | |
c8987876 JB |
2275 | WARN_ON(__sta_info_destroy(sta)); |
2276 | mutex_unlock(&sdata->local->sta_mtx); | |
2277 | return false; | |
2278 | } | |
2279 | ||
7852e361 | 2280 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2281 | |
f2176d72 JO |
2282 | /* |
2283 | * Always handle WMM once after association regardless | |
2284 | * of the first value the AP uses. Setting -1 here has | |
2285 | * that effect because the AP values is an unsigned | |
2286 | * 4-bit value. | |
2287 | */ | |
2288 | ifmgd->wmm_last_param_set = -1; | |
2289 | ||
ddf4ac53 | 2290 | if (elems.wmm_param) |
4ced3f74 | 2291 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2292 | elems.wmm_param_len); |
aa837e1d | 2293 | else |
3abead59 JB |
2294 | ieee80211_set_wmm_default(sdata, false); |
2295 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2296 | |
074d46d1 | 2297 | if (elems.ht_operation && elems.wmm_param && |
a8243b72 | 2298 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
24398e39 JB |
2299 | changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation, |
2300 | cbss->bssid, false); | |
ae5eb026 | 2301 | |
60f8b39c JB |
2302 | /* set AID and assoc capability, |
2303 | * ieee80211_set_associated() will tell the driver */ | |
2304 | bss_conf->aid = aid; | |
2305 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2306 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2307 | |
d524215f FF |
2308 | /* |
2309 | * If we're using 4-addr mode, let the AP know that we're | |
2310 | * doing so, so that it can create the STA VLAN on its side | |
2311 | */ | |
2312 | if (ifmgd->use_4addr) | |
2313 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2314 | ||
15b7b062 | 2315 | /* |
b291ba11 JB |
2316 | * Start timer to probe the connection to the AP now. |
2317 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2318 | */ |
b291ba11 | 2319 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2320 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2321 | |
af6b6374 | 2322 | return true; |
f0706e82 JB |
2323 | } |
2324 | ||
66e67e41 JB |
2325 | static enum rx_mgmt_action __must_check |
2326 | ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, | |
2327 | struct ieee80211_mgmt *mgmt, size_t len, | |
2328 | struct cfg80211_bss **bss) | |
2329 | { | |
2330 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2331 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2332 | u16 capab_info, status_code, aid; | |
2333 | struct ieee802_11_elems elems; | |
2334 | u8 *pos; | |
2335 | bool reassoc; | |
2336 | ||
2337 | lockdep_assert_held(&ifmgd->mtx); | |
2338 | ||
2339 | if (!assoc_data) | |
2340 | return RX_MGMT_NONE; | |
b203ca39 | 2341 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
66e67e41 JB |
2342 | return RX_MGMT_NONE; |
2343 | ||
2344 | /* | |
2345 | * AssocResp and ReassocResp have identical structure, so process both | |
2346 | * of them in this function. | |
2347 | */ | |
2348 | ||
2349 | if (len < 24 + 6) | |
2350 | return RX_MGMT_NONE; | |
2351 | ||
2352 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2353 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2354 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2355 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2356 | ||
bdcbd8e0 JB |
2357 | sdata_info(sdata, |
2358 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2359 | reassoc ? "Rea" : "A", mgmt->sa, | |
2360 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2361 | |
2362 | pos = mgmt->u.assoc_resp.variable; | |
2363 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
2364 | ||
2365 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
2366 | elems.timeout_int && elems.timeout_int_len == 5 && | |
2367 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
2368 | u32 tu, ms; | |
2369 | tu = get_unaligned_le32(elems.timeout_int + 1); | |
2370 | ms = tu * 1024 / 1000; | |
bdcbd8e0 JB |
2371 | sdata_info(sdata, |
2372 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2373 | mgmt->sa, tu, ms); | |
66e67e41 JB |
2374 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
2375 | if (ms > IEEE80211_ASSOC_TIMEOUT) | |
2376 | run_again(ifmgd, assoc_data->timeout); | |
2377 | return RX_MGMT_NONE; | |
2378 | } | |
2379 | ||
2380 | *bss = assoc_data->bss; | |
2381 | ||
2382 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2383 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2384 | mgmt->sa, status_code); | |
66e67e41 JB |
2385 | ieee80211_destroy_assoc_data(sdata, false); |
2386 | } else { | |
66e67e41 JB |
2387 | if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) { |
2388 | /* oops -- internal error -- send timeout for now */ | |
10a9109f | 2389 | ieee80211_destroy_assoc_data(sdata, false); |
66e67e41 JB |
2390 | cfg80211_put_bss(*bss); |
2391 | return RX_MGMT_CFG80211_ASSOC_TIMEOUT; | |
2392 | } | |
635d999f | 2393 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2394 | |
2395 | /* | |
2396 | * destroy assoc_data afterwards, as otherwise an idle | |
2397 | * recalc after assoc_data is NULL but before associated | |
2398 | * is set can cause the interface to go idle | |
2399 | */ | |
2400 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2401 | } |
2402 | ||
2403 | return RX_MGMT_CFG80211_RX_ASSOC; | |
2404 | } | |
8e3c1b77 | 2405 | |
98c8fccf | 2406 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2407 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2408 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2409 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2410 | { |
2411 | struct ieee80211_local *local = sdata->local; | |
2412 | int freq; | |
c2b13452 | 2413 | struct ieee80211_bss *bss; |
98c8fccf | 2414 | struct ieee80211_channel *channel; |
56007a02 JB |
2415 | bool need_ps = false; |
2416 | ||
826262c3 JB |
2417 | if ((sdata->u.mgd.associated && |
2418 | ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) || | |
2419 | (sdata->u.mgd.assoc_data && | |
2420 | ether_addr_equal(mgmt->bssid, | |
2421 | sdata->u.mgd.assoc_data->bss->bssid))) { | |
56007a02 | 2422 | /* not previously set so we may need to recalc */ |
826262c3 JB |
2423 | need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period; |
2424 | ||
2425 | if (elems->tim && !elems->parse_error) { | |
2426 | struct ieee80211_tim_ie *tim_ie = elems->tim; | |
2427 | sdata->u.mgd.dtim_period = tim_ie->dtim_period; | |
2428 | } | |
56007a02 | 2429 | } |
98c8fccf JB |
2430 | |
2431 | if (elems->ds_params && elems->ds_params_len == 1) | |
59eb21a6 BR |
2432 | freq = ieee80211_channel_to_frequency(elems->ds_params[0], |
2433 | rx_status->band); | |
98c8fccf JB |
2434 | else |
2435 | freq = rx_status->freq; | |
2436 | ||
2437 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
2438 | ||
2439 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2440 | return; | |
2441 | ||
98c8fccf | 2442 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2443 | channel); |
77fdaa12 JB |
2444 | if (bss) |
2445 | ieee80211_rx_bss_put(local, bss); | |
2446 | ||
2447 | if (!sdata->u.mgd.associated) | |
98c8fccf JB |
2448 | return; |
2449 | ||
56007a02 JB |
2450 | if (need_ps) { |
2451 | mutex_lock(&local->iflist_mtx); | |
2452 | ieee80211_recalc_ps(local, -1); | |
2453 | mutex_unlock(&local->iflist_mtx); | |
2454 | } | |
2455 | ||
5bc1420b JB |
2456 | if (elems->ch_switch_ie && |
2457 | memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0) | |
2458 | ieee80211_sta_process_chanswitch(sdata, elems->ch_switch_ie, | |
5ce6e438 | 2459 | bss, rx_status->mactime); |
f0706e82 JB |
2460 | } |
2461 | ||
2462 | ||
f698d856 | 2463 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2464 | struct sk_buff *skb) |
f0706e82 | 2465 | { |
af6b6374 | 2466 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2467 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2468 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2469 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2470 | struct ieee802_11_elems elems; |
2471 | ||
15b7b062 KV |
2472 | ifmgd = &sdata->u.mgd; |
2473 | ||
77fdaa12 JB |
2474 | ASSERT_MGD_MTX(ifmgd); |
2475 | ||
b203ca39 | 2476 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2477 | return; /* ignore ProbeResp to foreign address */ |
2478 | ||
ae6a44e3 EK |
2479 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2480 | if (baselen > len) | |
2481 | return; | |
2482 | ||
2483 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
2484 | &elems); | |
2485 | ||
d45c4172 | 2486 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2487 | |
77fdaa12 | 2488 | if (ifmgd->associated && |
b203ca39 | 2489 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2490 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2491 | |
2492 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2493 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2494 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2495 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2496 | ifmgd->auth_data->tries = 0; |
2497 | ifmgd->auth_data->timeout = jiffies; | |
2498 | run_again(ifmgd, ifmgd->auth_data->timeout); | |
2499 | } | |
f0706e82 JB |
2500 | } |
2501 | ||
d91f36db JB |
2502 | /* |
2503 | * This is the canonical list of information elements we care about, | |
2504 | * the filter code also gives us all changes to the Microsoft OUI | |
2505 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2506 | * | |
2507 | * We implement beacon filtering in software since that means we can | |
2508 | * avoid processing the frame here and in cfg80211, and userspace | |
2509 | * will not be able to tell whether the hardware supports it or not. | |
2510 | * | |
2511 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2512 | * add items it requires. It also needs to be able to tell us to | |
2513 | * look out for other vendor IEs. | |
2514 | */ | |
2515 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2516 | (1ULL << WLAN_EID_COUNTRY) | |
2517 | (1ULL << WLAN_EID_ERP_INFO) | | |
2518 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2519 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2520 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2521 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2522 | |
f698d856 | 2523 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2524 | struct ieee80211_mgmt *mgmt, |
2525 | size_t len, | |
2526 | struct ieee80211_rx_status *rx_status) | |
2527 | { | |
d91f36db | 2528 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2529 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2530 | size_t baselen; |
2531 | struct ieee802_11_elems elems; | |
f698d856 | 2532 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2533 | struct ieee80211_chanctx_conf *chanctx_conf; |
2534 | struct ieee80211_channel *chan; | |
471b3efd | 2535 | u32 changed = 0; |
f87ad637 | 2536 | bool erp_valid; |
7a5158ef | 2537 | u8 erp_value = 0; |
d91f36db | 2538 | u32 ncrc; |
77fdaa12 JB |
2539 | u8 *bssid; |
2540 | ||
66e67e41 | 2541 | lockdep_assert_held(&ifmgd->mtx); |
f0706e82 | 2542 | |
ae6a44e3 EK |
2543 | /* Process beacon from the current BSS */ |
2544 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2545 | if (baselen > len) | |
2546 | return; | |
2547 | ||
55de908a JB |
2548 | rcu_read_lock(); |
2549 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2550 | if (!chanctx_conf) { | |
2551 | rcu_read_unlock(); | |
f0706e82 | 2552 | return; |
55de908a JB |
2553 | } |
2554 | ||
4bf88530 | 2555 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a JB |
2556 | rcu_read_unlock(); |
2557 | return; | |
2558 | } | |
4bf88530 | 2559 | chan = chanctx_conf->def.chan; |
55de908a | 2560 | rcu_read_unlock(); |
f0706e82 | 2561 | |
c65dd147 | 2562 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2563 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 JB |
2564 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
2565 | len - baselen, &elems); | |
77fdaa12 | 2566 | |
d45c4172 | 2567 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
66e67e41 | 2568 | ifmgd->assoc_data->have_beacon = true; |
c65dd147 | 2569 | ifmgd->assoc_data->need_beacon = false; |
66e67e41 JB |
2570 | /* continue assoc process */ |
2571 | ifmgd->assoc_data->timeout = jiffies; | |
2572 | run_again(ifmgd, ifmgd->assoc_data->timeout); | |
2573 | return; | |
2574 | } | |
77fdaa12 | 2575 | |
66e67e41 | 2576 | if (!ifmgd->associated || |
b203ca39 | 2577 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
f0706e82 | 2578 | return; |
66e67e41 | 2579 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2580 | |
17e4ec14 JM |
2581 | /* Track average RSSI from the Beacon frames of the current AP */ |
2582 | ifmgd->last_beacon_signal = rx_status->signal; | |
2583 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2584 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2585 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2586 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 2587 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 2588 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
2589 | } else { |
2590 | ifmgd->ave_beacon_signal = | |
2591 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
2592 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
2593 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 2594 | ifmgd->count_beacon_signal++; |
17e4ec14 | 2595 | } |
615f7b9b MV |
2596 | |
2597 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
2598 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
2599 | int sig = ifmgd->ave_beacon_signal; | |
2600 | int last_sig = ifmgd->last_ave_beacon_signal; | |
2601 | ||
2602 | /* | |
2603 | * if signal crosses either of the boundaries, invoke callback | |
2604 | * with appropriate parameters | |
2605 | */ | |
2606 | if (sig > ifmgd->rssi_max_thold && | |
2607 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
2608 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2609 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
2610 | } else if (sig < ifmgd->rssi_min_thold && |
2611 | (last_sig >= ifmgd->rssi_max_thold || | |
2612 | last_sig == 0)) { | |
2613 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2614 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
2615 | } |
2616 | } | |
2617 | ||
17e4ec14 | 2618 | if (bss_conf->cqm_rssi_thold && |
391a200a | 2619 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 2620 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
2621 | int sig = ifmgd->ave_beacon_signal / 16; |
2622 | int last_event = ifmgd->last_cqm_event_signal; | |
2623 | int thold = bss_conf->cqm_rssi_thold; | |
2624 | int hyst = bss_conf->cqm_rssi_hyst; | |
2625 | if (sig < thold && | |
2626 | (last_event == 0 || sig < last_event - hyst)) { | |
2627 | ifmgd->last_cqm_event_signal = sig; | |
2628 | ieee80211_cqm_rssi_notify( | |
2629 | &sdata->vif, | |
2630 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
2631 | GFP_KERNEL); | |
2632 | } else if (sig > thold && | |
2633 | (last_event == 0 || sig > last_event + hyst)) { | |
2634 | ifmgd->last_cqm_event_signal = sig; | |
2635 | ieee80211_cqm_rssi_notify( | |
2636 | &sdata->vif, | |
2637 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
2638 | GFP_KERNEL); | |
2639 | } | |
2640 | } | |
2641 | ||
b291ba11 | 2642 | if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) { |
bdcbd8e0 JB |
2643 | mlme_dbg_ratelimited(sdata, |
2644 | "cancelling probereq poll due to a received beacon\n"); | |
925e64c3 | 2645 | mutex_lock(&local->mtx); |
b291ba11 | 2646 | ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL; |
925e64c3 SG |
2647 | ieee80211_run_deferred_scan(local); |
2648 | mutex_unlock(&local->mtx); | |
2649 | ||
4e751843 JB |
2650 | mutex_lock(&local->iflist_mtx); |
2651 | ieee80211_recalc_ps(local, -1); | |
2652 | mutex_unlock(&local->iflist_mtx); | |
92778180 JM |
2653 | } |
2654 | ||
b291ba11 JB |
2655 | /* |
2656 | * Push the beacon loss detection into the future since | |
2657 | * we are processing a beacon from the AP just now. | |
2658 | */ | |
d3a910a8 | 2659 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 2660 | |
d91f36db JB |
2661 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
2662 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
2663 | len - baselen, &elems, | |
2664 | care_about_ies, ncrc); | |
2665 | ||
25c9c875 | 2666 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
2667 | bool directed_tim = ieee80211_check_tim(elems.tim, |
2668 | elems.tim_len, | |
2669 | ifmgd->aid); | |
1fb3606b | 2670 | if (directed_tim) { |
572e0012 | 2671 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
2672 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
2673 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2674 | ieee80211_hw_config(local, | |
2675 | IEEE80211_CONF_CHANGE_PS); | |
2676 | } | |
572e0012 | 2677 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 2678 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
2679 | local->pspolling = true; |
2680 | ||
2681 | /* | |
2682 | * Here is assumed that the driver will be | |
2683 | * able to send ps-poll frame and receive a | |
2684 | * response even though power save mode is | |
2685 | * enabled, but some drivers might require | |
2686 | * to disable power save here. This needs | |
2687 | * to be investigated. | |
2688 | */ | |
2689 | ieee80211_send_pspoll(local, sdata); | |
2690 | } | |
a97b77b9 VN |
2691 | } |
2692 | } | |
7a5158ef | 2693 | |
488dd7b5 JB |
2694 | if (sdata->vif.p2p) { |
2695 | u8 noa[2]; | |
2696 | int ret; | |
2697 | ||
2698 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
2699 | len - baselen, | |
2700 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
2701 | noa, sizeof(noa)); | |
2702 | if (ret >= 2 && sdata->u.mgd.p2p_noa_index != noa[0]) { | |
2703 | bss_conf->p2p_oppps = noa[1] & 0x80; | |
2704 | bss_conf->p2p_ctwindow = noa[1] & 0x7f; | |
2705 | changed |= BSS_CHANGED_P2P_PS; | |
2706 | sdata->u.mgd.p2p_noa_index = noa[0]; | |
2707 | /* | |
2708 | * make sure we update all information, the CRC | |
2709 | * mechanism doesn't look at P2P attributes. | |
2710 | */ | |
2711 | ifmgd->beacon_crc_valid = false; | |
2712 | } | |
2713 | } | |
2714 | ||
d8ec4433 | 2715 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
30196673 JM |
2716 | return; |
2717 | ifmgd->beacon_crc = ncrc; | |
d8ec4433 | 2718 | ifmgd->beacon_crc_valid = true; |
30196673 | 2719 | |
d45c4172 | 2720 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d JB |
2721 | |
2722 | if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
2723 | elems.wmm_param_len)) | |
2724 | changed |= BSS_CHANGED_QOS; | |
2725 | ||
c65dd147 EG |
2726 | /* |
2727 | * If we haven't had a beacon before, tell the driver about the | |
2728 | * DTIM period now. | |
2729 | */ | |
2730 | if (!bss_conf->dtim_period) { | |
2731 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ | |
2732 | if (elems.tim) | |
2733 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
2734 | else | |
2735 | bss_conf->dtim_period = 1; | |
2736 | changed |= BSS_CHANGED_DTIM_PERIOD; | |
2737 | } | |
2738 | ||
7a5158ef JB |
2739 | if (elems.erp_info && elems.erp_info_len >= 1) { |
2740 | erp_valid = true; | |
2741 | erp_value = elems.erp_info[0]; | |
2742 | } else { | |
2743 | erp_valid = false; | |
50c4afb9 | 2744 | } |
7a5158ef JB |
2745 | changed |= ieee80211_handle_bss_capability(sdata, |
2746 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
2747 | erp_valid, erp_value); | |
f0706e82 | 2748 | |
d3c990fb | 2749 | |
074d46d1 | 2750 | if (elems.ht_cap_elem && elems.ht_operation && elems.wmm_param && |
a8243b72 | 2751 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
24398e39 JB |
2752 | changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation, |
2753 | bssid, true); | |
d3c990fb | 2754 | |
04b7b2ff JB |
2755 | if (elems.country_elem && elems.pwr_constr_elem && |
2756 | mgmt->u.probe_resp.capab_info & | |
2757 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
2758 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
2759 | elems.country_elem, | |
2760 | elems.country_elem_len, | |
2761 | elems.pwr_constr_elem); | |
3f2355cb | 2762 | |
471b3efd | 2763 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2764 | } |
2765 | ||
1fa57d01 JB |
2766 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
2767 | struct sk_buff *skb) | |
f0706e82 | 2768 | { |
77fdaa12 | 2769 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 2770 | struct ieee80211_rx_status *rx_status; |
f0706e82 | 2771 | struct ieee80211_mgmt *mgmt; |
66e67e41 | 2772 | struct cfg80211_bss *bss = NULL; |
77fdaa12 | 2773 | enum rx_mgmt_action rma = RX_MGMT_NONE; |
f0706e82 JB |
2774 | u16 fc; |
2775 | ||
f0706e82 JB |
2776 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
2777 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2778 | fc = le16_to_cpu(mgmt->frame_control); | |
2779 | ||
77fdaa12 JB |
2780 | mutex_lock(&ifmgd->mtx); |
2781 | ||
66e67e41 JB |
2782 | switch (fc & IEEE80211_FCTL_STYPE) { |
2783 | case IEEE80211_STYPE_BEACON: | |
2784 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); | |
2785 | break; | |
2786 | case IEEE80211_STYPE_PROBE_RESP: | |
2787 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
2788 | break; | |
2789 | case IEEE80211_STYPE_AUTH: | |
2790 | rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); | |
2791 | break; | |
2792 | case IEEE80211_STYPE_DEAUTH: | |
2793 | rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); | |
2794 | break; | |
2795 | case IEEE80211_STYPE_DISASSOC: | |
2796 | rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
2797 | break; | |
2798 | case IEEE80211_STYPE_ASSOC_RESP: | |
2799 | case IEEE80211_STYPE_REASSOC_RESP: | |
2800 | rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss); | |
2801 | break; | |
2802 | case IEEE80211_STYPE_ACTION: | |
2803 | switch (mgmt->u.action.category) { | |
2804 | case WLAN_CATEGORY_SPECTRUM_MGMT: | |
2805 | ieee80211_sta_process_chanswitch(sdata, | |
2806 | &mgmt->u.action.u.chan_switch.sw_elem, | |
2807 | (void *)ifmgd->associated->priv, | |
2808 | rx_status->mactime); | |
77fdaa12 | 2809 | break; |
77fdaa12 | 2810 | } |
77fdaa12 | 2811 | } |
77fdaa12 JB |
2812 | mutex_unlock(&ifmgd->mtx); |
2813 | ||
66e67e41 JB |
2814 | switch (rma) { |
2815 | case RX_MGMT_NONE: | |
2816 | /* no action */ | |
2817 | break; | |
2818 | case RX_MGMT_CFG80211_DEAUTH: | |
ce470613 | 2819 | cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); |
66e67e41 JB |
2820 | break; |
2821 | case RX_MGMT_CFG80211_DISASSOC: | |
2822 | cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); | |
2823 | break; | |
2824 | case RX_MGMT_CFG80211_RX_AUTH: | |
2825 | cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len); | |
2826 | break; | |
2827 | case RX_MGMT_CFG80211_RX_ASSOC: | |
2828 | cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len); | |
2829 | break; | |
2830 | case RX_MGMT_CFG80211_ASSOC_TIMEOUT: | |
2831 | cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid); | |
2832 | break; | |
2833 | default: | |
2834 | WARN(1, "unexpected: %d", rma); | |
b054b747 | 2835 | } |
f0706e82 JB |
2836 | } |
2837 | ||
9c6bd790 | 2838 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 2839 | { |
60f8b39c JB |
2840 | struct ieee80211_sub_if_data *sdata = |
2841 | (struct ieee80211_sub_if_data *) data; | |
46900298 | 2842 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 2843 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2844 | |
5bb644a0 JB |
2845 | if (local->quiescing) { |
2846 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
2847 | return; | |
2848 | } | |
2849 | ||
64592c8f | 2850 | ieee80211_queue_work(&local->hw, &sdata->work); |
f0706e82 JB |
2851 | } |
2852 | ||
04ac3c0e | 2853 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
95acac61 | 2854 | u8 *bssid, u8 reason) |
04ac3c0e FF |
2855 | { |
2856 | struct ieee80211_local *local = sdata->local; | |
2857 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
6ae16775 | 2858 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 2859 | |
37ad3888 JB |
2860 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
2861 | false, frame_buf); | |
04ac3c0e | 2862 | mutex_unlock(&ifmgd->mtx); |
37ad3888 | 2863 | |
04ac3c0e FF |
2864 | /* |
2865 | * must be outside lock due to cfg80211, | |
2866 | * but that's not a problem. | |
2867 | */ | |
6ae16775 | 2868 | cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); |
fcac4fb0 FF |
2869 | |
2870 | mutex_lock(&local->mtx); | |
2871 | ieee80211_recalc_idle(local); | |
2872 | mutex_unlock(&local->mtx); | |
2873 | ||
04ac3c0e FF |
2874 | mutex_lock(&ifmgd->mtx); |
2875 | } | |
2876 | ||
66e67e41 JB |
2877 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
2878 | { | |
2879 | struct ieee80211_local *local = sdata->local; | |
2880 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2881 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 2882 | u32 tx_flags = 0; |
66e67e41 JB |
2883 | |
2884 | lockdep_assert_held(&ifmgd->mtx); | |
2885 | ||
2886 | if (WARN_ON_ONCE(!auth_data)) | |
2887 | return -EINVAL; | |
2888 | ||
1672c0e3 JB |
2889 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2890 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2891 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
2892 | ||
66e67e41 JB |
2893 | auth_data->tries++; |
2894 | ||
2895 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
2896 | sdata_info(sdata, "authentication with %pM timed out\n", |
2897 | auth_data->bss->bssid); | |
66e67e41 JB |
2898 | |
2899 | /* | |
2900 | * Most likely AP is not in the range so remove the | |
2901 | * bss struct for that AP. | |
2902 | */ | |
2903 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
2904 | ||
2905 | return -ETIMEDOUT; | |
2906 | } | |
2907 | ||
a1845fc7 JB |
2908 | drv_mgd_prepare_tx(local, sdata); |
2909 | ||
66e67e41 | 2910 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
2911 | u16 trans = 1; |
2912 | u16 status = 0; | |
2913 | ||
bdcbd8e0 JB |
2914 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
2915 | auth_data->bss->bssid, auth_data->tries, | |
2916 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
2917 | |
2918 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
2919 | |
2920 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
2921 | trans = auth_data->sae_trans; | |
2922 | status = auth_data->sae_status; | |
2923 | auth_data->expected_transaction = trans; | |
2924 | } | |
2925 | ||
2926 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, | |
2927 | auth_data->data, auth_data->data_len, | |
66e67e41 | 2928 | auth_data->bss->bssid, |
1672c0e3 JB |
2929 | auth_data->bss->bssid, NULL, 0, 0, |
2930 | tx_flags); | |
66e67e41 JB |
2931 | } else { |
2932 | const u8 *ssidie; | |
2933 | ||
bdcbd8e0 JB |
2934 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
2935 | auth_data->bss->bssid, auth_data->tries, | |
2936 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 2937 | |
9caf0364 | 2938 | rcu_read_lock(); |
66e67e41 | 2939 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
2940 | if (!ssidie) { |
2941 | rcu_read_unlock(); | |
66e67e41 | 2942 | return -EINVAL; |
9caf0364 | 2943 | } |
66e67e41 JB |
2944 | /* |
2945 | * Direct probe is sent to broadcast address as some APs | |
2946 | * will not answer to direct packet in unassociated state. | |
2947 | */ | |
2948 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
1672c0e3 | 2949 | NULL, 0, (u32) -1, true, tx_flags, |
55de908a | 2950 | auth_data->bss->channel, false); |
9caf0364 | 2951 | rcu_read_unlock(); |
66e67e41 JB |
2952 | } |
2953 | ||
1672c0e3 JB |
2954 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
2955 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; | |
2956 | run_again(ifmgd, auth_data->timeout); | |
2957 | } | |
66e67e41 JB |
2958 | |
2959 | return 0; | |
2960 | } | |
2961 | ||
2962 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
2963 | { | |
2964 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2965 | struct ieee80211_local *local = sdata->local; | |
2966 | ||
2967 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
2968 | ||
66e67e41 JB |
2969 | assoc_data->tries++; |
2970 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
2971 | sdata_info(sdata, "association with %pM timed out\n", |
2972 | assoc_data->bss->bssid); | |
66e67e41 JB |
2973 | |
2974 | /* | |
2975 | * Most likely AP is not in the range so remove the | |
2976 | * bss struct for that AP. | |
2977 | */ | |
2978 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
2979 | ||
2980 | return -ETIMEDOUT; | |
2981 | } | |
2982 | ||
bdcbd8e0 JB |
2983 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
2984 | assoc_data->bss->bssid, assoc_data->tries, | |
2985 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
2986 | ieee80211_send_assoc(sdata); |
2987 | ||
1672c0e3 JB |
2988 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
2989 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
2990 | run_again(&sdata->u.mgd, assoc_data->timeout); | |
2991 | } | |
66e67e41 JB |
2992 | |
2993 | return 0; | |
2994 | } | |
2995 | ||
1672c0e3 JB |
2996 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
2997 | __le16 fc, bool acked) | |
2998 | { | |
2999 | struct ieee80211_local *local = sdata->local; | |
3000 | ||
3001 | sdata->u.mgd.status_fc = fc; | |
3002 | sdata->u.mgd.status_acked = acked; | |
3003 | sdata->u.mgd.status_received = true; | |
3004 | ||
3005 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3006 | } | |
3007 | ||
1fa57d01 | 3008 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3009 | { |
9c6bd790 | 3010 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3011 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3012 | |
77fdaa12 JB |
3013 | mutex_lock(&ifmgd->mtx); |
3014 | ||
1672c0e3 JB |
3015 | if (ifmgd->status_received) { |
3016 | __le16 fc = ifmgd->status_fc; | |
3017 | bool status_acked = ifmgd->status_acked; | |
3018 | ||
3019 | ifmgd->status_received = false; | |
3020 | if (ifmgd->auth_data && | |
3021 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3022 | if (status_acked) { | |
3023 | ifmgd->auth_data->timeout = | |
3024 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
3025 | run_again(ifmgd, ifmgd->auth_data->timeout); | |
3026 | } else { | |
3027 | ifmgd->auth_data->timeout = jiffies - 1; | |
3028 | } | |
3029 | } else if (ifmgd->assoc_data && | |
3030 | (ieee80211_is_assoc_req(fc) || | |
3031 | ieee80211_is_reassoc_req(fc))) { | |
3032 | if (status_acked) { | |
3033 | ifmgd->assoc_data->timeout = | |
3034 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
3035 | run_again(ifmgd, ifmgd->assoc_data->timeout); | |
3036 | } else { | |
3037 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3038 | } | |
3039 | } | |
3040 | } | |
3041 | ||
66e67e41 JB |
3042 | if (ifmgd->auth_data && |
3043 | time_after(jiffies, ifmgd->auth_data->timeout)) { | |
3044 | if (ifmgd->auth_data->done) { | |
3045 | /* | |
3046 | * ok ... we waited for assoc but userspace didn't, | |
3047 | * so let's just kill the auth data | |
3048 | */ | |
3049 | ieee80211_destroy_auth_data(sdata, false); | |
3050 | } else if (ieee80211_probe_auth(sdata)) { | |
3051 | u8 bssid[ETH_ALEN]; | |
3052 | ||
3053 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3054 | ||
3055 | ieee80211_destroy_auth_data(sdata, false); | |
3056 | ||
3057 | mutex_unlock(&ifmgd->mtx); | |
3058 | cfg80211_send_auth_timeout(sdata->dev, bssid); | |
3059 | mutex_lock(&ifmgd->mtx); | |
3060 | } | |
3061 | } else if (ifmgd->auth_data) | |
3062 | run_again(ifmgd, ifmgd->auth_data->timeout); | |
3063 | ||
3064 | if (ifmgd->assoc_data && | |
3065 | time_after(jiffies, ifmgd->assoc_data->timeout)) { | |
c65dd147 EG |
3066 | if ((ifmgd->assoc_data->need_beacon && |
3067 | !ifmgd->assoc_data->have_beacon) || | |
66e67e41 JB |
3068 | ieee80211_do_assoc(sdata)) { |
3069 | u8 bssid[ETH_ALEN]; | |
3070 | ||
3071 | memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN); | |
3072 | ||
3073 | ieee80211_destroy_assoc_data(sdata, false); | |
3074 | ||
3075 | mutex_unlock(&ifmgd->mtx); | |
3076 | cfg80211_send_assoc_timeout(sdata->dev, bssid); | |
3077 | mutex_lock(&ifmgd->mtx); | |
3078 | } | |
3079 | } else if (ifmgd->assoc_data) | |
3080 | run_again(ifmgd, ifmgd->assoc_data->timeout); | |
3081 | ||
b291ba11 JB |
3082 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
3083 | IEEE80211_STA_CONNECTION_POLL) && | |
3084 | ifmgd->associated) { | |
a43abf29 | 3085 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3086 | int max_tries; |
a43abf29 | 3087 | |
0c1ad2ca | 3088 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3089 | |
72a8a3ed | 3090 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3091 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3092 | else |
180205bd | 3093 | max_tries = max_probe_tries; |
72a8a3ed | 3094 | |
4e5ff376 FF |
3095 | /* ACK received for nullfunc probing frame */ |
3096 | if (!ifmgd->probe_send_count) | |
3097 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3098 | else if (ifmgd->nullfunc_failed) { |
3099 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3100 | mlme_dbg(sdata, |
3101 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3102 | bssid, ifmgd->probe_send_count, | |
3103 | max_tries); | |
04ac3c0e FF |
3104 | ieee80211_mgd_probe_ap_send(sdata); |
3105 | } else { | |
bdcbd8e0 JB |
3106 | mlme_dbg(sdata, |
3107 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3108 | bssid); | |
95acac61 JB |
3109 | ieee80211_sta_connection_lost(sdata, bssid, |
3110 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
04ac3c0e FF |
3111 | } |
3112 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
b291ba11 | 3113 | run_again(ifmgd, ifmgd->probe_timeout); |
04ac3c0e | 3114 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3115 | mlme_dbg(sdata, |
3116 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3117 | bssid, probe_wait_ms); | |
95acac61 JB |
3118 | ieee80211_sta_connection_lost(sdata, bssid, |
3119 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
04ac3c0e | 3120 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3121 | mlme_dbg(sdata, |
3122 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3123 | bssid, probe_wait_ms, | |
3124 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3125 | ieee80211_mgd_probe_ap_send(sdata); |
3126 | } else { | |
b291ba11 JB |
3127 | /* |
3128 | * We actually lost the connection ... or did we? | |
3129 | * Let's make sure! | |
3130 | */ | |
b38afa87 BG |
3131 | wiphy_debug(local->hw.wiphy, |
3132 | "%s: No probe response from AP %pM" | |
3133 | " after %dms, disconnecting.\n", | |
3134 | sdata->name, | |
180205bd | 3135 | bssid, probe_wait_ms); |
04ac3c0e | 3136 | |
95acac61 JB |
3137 | ieee80211_sta_connection_lost(sdata, bssid, |
3138 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
b291ba11 JB |
3139 | } |
3140 | } | |
3141 | ||
77fdaa12 | 3142 | mutex_unlock(&ifmgd->mtx); |
66e67e41 JB |
3143 | |
3144 | mutex_lock(&local->mtx); | |
3145 | ieee80211_recalc_idle(local); | |
3146 | mutex_unlock(&local->mtx); | |
f0706e82 JB |
3147 | } |
3148 | ||
b291ba11 JB |
3149 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3150 | { | |
3151 | struct ieee80211_sub_if_data *sdata = | |
3152 | (struct ieee80211_sub_if_data *) data; | |
3153 | struct ieee80211_local *local = sdata->local; | |
3154 | ||
3155 | if (local->quiescing) | |
3156 | return; | |
3157 | ||
1e4dcd01 JO |
3158 | ieee80211_queue_work(&sdata->local->hw, |
3159 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3160 | } |
3161 | ||
3162 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3163 | { | |
3164 | struct ieee80211_sub_if_data *sdata = | |
3165 | (struct ieee80211_sub_if_data *) data; | |
3166 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3167 | struct ieee80211_local *local = sdata->local; | |
3168 | ||
3169 | if (local->quiescing) | |
3170 | return; | |
3171 | ||
42935eca | 3172 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3173 | } |
3174 | ||
3175 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3176 | { | |
3177 | struct ieee80211_sub_if_data *sdata = | |
3178 | container_of(work, struct ieee80211_sub_if_data, | |
3179 | u.mgd.monitor_work); | |
3180 | ||
3181 | ieee80211_mgd_probe_ap(sdata, false); | |
3182 | } | |
3183 | ||
9c6bd790 JB |
3184 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3185 | { | |
494f1fe5 EP |
3186 | u32 flags; |
3187 | ||
ad935687 | 3188 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3189 | __ieee80211_stop_poll(sdata); |
ad935687 | 3190 | |
b291ba11 | 3191 | /* let's probe the connection once */ |
494f1fe5 EP |
3192 | flags = sdata->local->hw.flags; |
3193 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3194 | ieee80211_queue_work(&sdata->local->hw, | |
3195 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3196 | /* and do all the other regular work too */ |
64592c8f | 3197 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3198 | } |
9c6bd790 | 3199 | } |
f0706e82 | 3200 | |
5bb644a0 JB |
3201 | #ifdef CONFIG_PM |
3202 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) | |
3203 | { | |
3204 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3205 | ||
3206 | /* | |
3207 | * we need to use atomic bitops for the running bits | |
3208 | * only because both timers might fire at the same | |
3209 | * time -- the code here is properly synchronised. | |
3210 | */ | |
3211 | ||
d1f5b7a3 JB |
3212 | cancel_work_sync(&ifmgd->request_smps_work); |
3213 | ||
0ecfe806 | 3214 | cancel_work_sync(&ifmgd->monitor_work); |
1e4dcd01 | 3215 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); |
882a7c69 | 3216 | cancel_work_sync(&ifmgd->csa_connection_drop_work); |
5bb644a0 JB |
3217 | if (del_timer_sync(&ifmgd->timer)) |
3218 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
3219 | ||
3220 | cancel_work_sync(&ifmgd->chswitch_work); | |
3221 | if (del_timer_sync(&ifmgd->chswitch_timer)) | |
3222 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
b291ba11 | 3223 | |
b291ba11 JB |
3224 | /* these will just be re-established on connection */ |
3225 | del_timer_sync(&ifmgd->conn_mon_timer); | |
3226 | del_timer_sync(&ifmgd->bcn_mon_timer); | |
5bb644a0 JB |
3227 | } |
3228 | ||
3229 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
3230 | { | |
3231 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3232 | ||
782d2673 JB |
3233 | mutex_lock(&ifmgd->mtx); |
3234 | if (!ifmgd->associated) { | |
3235 | mutex_unlock(&ifmgd->mtx); | |
676b58c2 | 3236 | return; |
782d2673 | 3237 | } |
676b58c2 | 3238 | |
95acac61 JB |
3239 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { |
3240 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
782d2673 JB |
3241 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); |
3242 | ieee80211_sta_connection_lost(sdata, | |
3243 | ifmgd->associated->bssid, | |
3244 | WLAN_REASON_UNSPECIFIED); | |
95acac61 | 3245 | mutex_unlock(&ifmgd->mtx); |
782d2673 | 3246 | return; |
95acac61 | 3247 | } |
782d2673 | 3248 | mutex_unlock(&ifmgd->mtx); |
95acac61 | 3249 | |
5bb644a0 JB |
3250 | if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) |
3251 | add_timer(&ifmgd->timer); | |
3252 | if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) | |
3253 | add_timer(&ifmgd->chswitch_timer); | |
c8a7972c | 3254 | ieee80211_sta_reset_beacon_monitor(sdata); |
925e64c3 SG |
3255 | |
3256 | mutex_lock(&sdata->local->mtx); | |
46090979 | 3257 | ieee80211_restart_sta_timer(sdata); |
925e64c3 | 3258 | mutex_unlock(&sdata->local->mtx); |
5bb644a0 JB |
3259 | } |
3260 | #endif | |
3261 | ||
9c6bd790 JB |
3262 | /* interface setup */ |
3263 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3264 | { |
46900298 | 3265 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3266 | |
46900298 | 3267 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3268 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3269 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3270 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3271 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3272 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3273 | ieee80211_csa_connection_drop_work); | |
d1f5b7a3 | 3274 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work); |
46900298 | 3275 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3276 | (unsigned long) sdata); |
b291ba11 JB |
3277 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3278 | (unsigned long) sdata); | |
3279 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3280 | (unsigned long) sdata); | |
46900298 | 3281 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3282 | (unsigned long) sdata); |
9c6bd790 | 3283 | |
ab1faead | 3284 | ifmgd->flags = 0; |
1478acb3 | 3285 | ifmgd->powersave = sdata->wdev.ps; |
dc41e4d4 EP |
3286 | ifmgd->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
3287 | ifmgd->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
bbbdff9e | 3288 | |
77fdaa12 | 3289 | mutex_init(&ifmgd->mtx); |
0f78231b JB |
3290 | |
3291 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) | |
3292 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3293 | else | |
3294 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3295 | } |
3296 | ||
77fdaa12 JB |
3297 | /* scan finished notification */ |
3298 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3299 | { |
31ee67a1 | 3300 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3301 | |
77fdaa12 JB |
3302 | /* Restart STA timers */ |
3303 | rcu_read_lock(); | |
3304 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3305 | ieee80211_restart_sta_timer(sdata); | |
3306 | rcu_read_unlock(); | |
3307 | } | |
60f8b39c | 3308 | |
77fdaa12 JB |
3309 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3310 | unsigned long data, void *dummy) | |
3311 | { | |
3312 | s32 latency_usec = (s32) data; | |
3313 | struct ieee80211_local *local = | |
3314 | container_of(nb, struct ieee80211_local, | |
3315 | network_latency_notifier); | |
1fa6f4af | 3316 | |
77fdaa12 JB |
3317 | mutex_lock(&local->iflist_mtx); |
3318 | ieee80211_recalc_ps(local, latency_usec); | |
3319 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3320 | |
77fdaa12 | 3321 | return 0; |
9c6bd790 JB |
3322 | } |
3323 | ||
f2d9d270 JB |
3324 | static u32 chandef_downgrade(struct cfg80211_chan_def *c) |
3325 | { | |
3326 | u32 ret; | |
3327 | int tmp; | |
3328 | ||
3329 | switch (c->width) { | |
3330 | case NL80211_CHAN_WIDTH_20: | |
3331 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
3332 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
3333 | break; | |
3334 | case NL80211_CHAN_WIDTH_40: | |
3335 | c->width = NL80211_CHAN_WIDTH_20; | |
3336 | c->center_freq1 = c->chan->center_freq; | |
3337 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
3338 | IEEE80211_STA_DISABLE_VHT; | |
3339 | break; | |
3340 | case NL80211_CHAN_WIDTH_80: | |
3341 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
3342 | /* n_P40 */ | |
3343 | tmp /= 2; | |
3344 | /* freq_P40 */ | |
3345 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
3346 | c->width = NL80211_CHAN_WIDTH_40; | |
3347 | ret = IEEE80211_STA_DISABLE_VHT; | |
3348 | break; | |
3349 | case NL80211_CHAN_WIDTH_80P80: | |
3350 | c->center_freq2 = 0; | |
3351 | c->width = NL80211_CHAN_WIDTH_80; | |
3352 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
3353 | IEEE80211_STA_DISABLE_160MHZ; | |
3354 | break; | |
3355 | case NL80211_CHAN_WIDTH_160: | |
3356 | /* n_P20 */ | |
3357 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
3358 | /* n_P80 */ | |
3359 | tmp /= 4; | |
3360 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
3361 | c->width = NL80211_CHAN_WIDTH_80; | |
3362 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
3363 | IEEE80211_STA_DISABLE_160MHZ; | |
3364 | break; | |
3365 | default: | |
3366 | case NL80211_CHAN_WIDTH_20_NOHT: | |
3367 | WARN_ON_ONCE(1); | |
3368 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
3369 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
3370 | break; | |
3371 | } | |
3372 | ||
3373 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
3374 | ||
3375 | return ret; | |
3376 | } | |
3377 | ||
3378 | static u32 | |
3379 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
3380 | struct ieee80211_supported_band *sband, | |
3381 | struct ieee80211_channel *channel, | |
3382 | const struct ieee80211_ht_operation *ht_oper, | |
3383 | const struct ieee80211_vht_operation *vht_oper, | |
3384 | struct cfg80211_chan_def *chandef) | |
3385 | { | |
3386 | struct cfg80211_chan_def vht_chandef; | |
3387 | u32 ht_cfreq, ret; | |
3388 | ||
3389 | chandef->chan = channel; | |
3390 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
3391 | chandef->center_freq1 = channel->center_freq; | |
3392 | chandef->center_freq2 = 0; | |
3393 | ||
3394 | if (!ht_oper || !sband->ht_cap.ht_supported) { | |
3395 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
3396 | goto out; | |
3397 | } | |
3398 | ||
3399 | chandef->width = NL80211_CHAN_WIDTH_20; | |
3400 | ||
3401 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
3402 | channel->band); | |
3403 | /* check that channel matches the right operating channel */ | |
3404 | if (channel->center_freq != ht_cfreq) { | |
3405 | /* | |
3406 | * It's possible that some APs are confused here; | |
3407 | * Netgear WNDR3700 sometimes reports 4 higher than | |
3408 | * the actual channel in association responses, but | |
3409 | * since we look at probe response/beacon data here | |
3410 | * it should be OK. | |
3411 | */ | |
3412 | sdata_info(sdata, | |
3413 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
3414 | channel->center_freq, ht_cfreq, | |
3415 | ht_oper->primary_chan, channel->band); | |
3416 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
3417 | goto out; | |
3418 | } | |
3419 | ||
3420 | /* check 40 MHz support, if we have it */ | |
3421 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
3422 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
3423 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
3424 | chandef->width = NL80211_CHAN_WIDTH_40; | |
3425 | chandef->center_freq1 += 10; | |
3426 | break; | |
3427 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
3428 | chandef->width = NL80211_CHAN_WIDTH_40; | |
3429 | chandef->center_freq1 -= 10; | |
3430 | break; | |
3431 | } | |
3432 | } else { | |
3433 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
3434 | ret = IEEE80211_STA_DISABLE_VHT; | |
3435 | goto out; | |
3436 | } | |
3437 | ||
3438 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
3439 | ret = IEEE80211_STA_DISABLE_VHT; | |
3440 | goto out; | |
3441 | } | |
3442 | ||
3443 | vht_chandef.chan = channel; | |
3444 | vht_chandef.center_freq1 = | |
3445 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
3446 | channel->band); | |
3447 | vht_chandef.center_freq2 = 0; | |
3448 | ||
3449 | if (vht_oper->center_freq_seg2_idx) | |
3450 | vht_chandef.center_freq2 = | |
3451 | ieee80211_channel_to_frequency( | |
3452 | vht_oper->center_freq_seg2_idx, | |
3453 | channel->band); | |
3454 | ||
3455 | switch (vht_oper->chan_width) { | |
3456 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
3457 | vht_chandef.width = chandef->width; | |
3458 | break; | |
3459 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
3460 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
3461 | break; | |
3462 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
3463 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
3464 | break; | |
3465 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
3466 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
3467 | break; | |
3468 | default: | |
3469 | sdata_info(sdata, | |
3470 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
3471 | vht_oper->chan_width); | |
3472 | ret = IEEE80211_STA_DISABLE_VHT; | |
3473 | goto out; | |
3474 | } | |
3475 | ||
3476 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
3477 | sdata_info(sdata, | |
3478 | "AP VHT information is invalid, disable VHT\n"); | |
3479 | ret = IEEE80211_STA_DISABLE_VHT; | |
3480 | goto out; | |
3481 | } | |
3482 | ||
3483 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
3484 | ret = 0; | |
3485 | goto out; | |
3486 | } | |
3487 | ||
3488 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
3489 | sdata_info(sdata, | |
3490 | "AP VHT information doesn't match HT, disable VHT\n"); | |
3491 | ret = IEEE80211_STA_DISABLE_VHT; | |
3492 | goto out; | |
3493 | } | |
3494 | ||
3495 | *chandef = vht_chandef; | |
3496 | ||
3497 | ret = 0; | |
3498 | ||
3499 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, | |
3500 | IEEE80211_CHAN_DISABLED)) { | |
3501 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { | |
3502 | ret = IEEE80211_STA_DISABLE_HT | | |
3503 | IEEE80211_STA_DISABLE_VHT; | |
3504 | goto out; | |
3505 | } | |
3506 | ||
3507 | ret = chandef_downgrade(chandef); | |
3508 | } | |
3509 | ||
3510 | if (chandef->width != vht_chandef.width) | |
3511 | sdata_info(sdata, | |
3512 | "local regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
3513 | ||
3514 | out: | |
3515 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
3516 | return ret; | |
3517 | } | |
3518 | ||
3519 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, | |
3520 | struct cfg80211_bss *cbss) | |
3521 | { | |
3522 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3523 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3524 | const struct ieee80211_ht_cap *ht_cap; | |
3525 | const struct ieee80211_vht_cap *vht_cap; | |
3526 | u8 chains = 1; | |
3527 | ||
3528 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3529 | return chains; | |
3530 | ||
9caf0364 | 3531 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3532 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3533 | ht_cap = (void *)(ht_cap_ie + 2); | |
3534 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3535 | /* | |
3536 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3537 | * "Tx Unequal Modulation Supported" fields. | |
3538 | */ | |
3539 | } | |
3540 | ||
3541 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3542 | return chains; | |
3543 | ||
9caf0364 | 3544 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3545 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3546 | u8 nss; | |
3547 | u16 tx_mcs_map; | |
3548 | ||
3549 | vht_cap = (void *)(vht_cap_ie + 2); | |
3550 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3551 | for (nss = 8; nss > 0; nss--) { | |
3552 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3553 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3554 | break; | |
3555 | } | |
3556 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3557 | chains = max(chains, nss); | |
3558 | } | |
3559 | ||
3560 | return chains; | |
3561 | } | |
3562 | ||
b17166a7 JB |
3563 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3564 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3565 | { |
3566 | struct ieee80211_local *local = sdata->local; | |
3567 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
24398e39 | 3568 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3569 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3570 | struct ieee80211_supported_band *sband; |
4bf88530 | 3571 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3572 | int ret; |
a1cf775d | 3573 | |
24398e39 JB |
3574 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3575 | ||
f2d9d270 JB |
3576 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3577 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3578 | IEEE80211_STA_DISABLE_160MHZ); | |
3579 | ||
9caf0364 JB |
3580 | rcu_read_lock(); |
3581 | ||
f2d9d270 JB |
3582 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3583 | sband->ht_cap.ht_supported) { | |
3584 | const u8 *ht_oper_ie; | |
24398e39 | 3585 | |
9caf0364 | 3586 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3587 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3588 | ht_oper = (void *)(ht_oper_ie + 2); | |
3589 | } | |
3590 | ||
f2d9d270 JB |
3591 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3592 | sband->vht_cap.vht_supported) { | |
3593 | const u8 *vht_oper_ie; | |
3594 | ||
9caf0364 JB |
3595 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3596 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3597 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3598 | vht_oper = (void *)(vht_oper_ie + 2); | |
3599 | if (vht_oper && !ht_oper) { | |
3600 | vht_oper = NULL; | |
bdcbd8e0 | 3601 | sdata_info(sdata, |
f2d9d270 JB |
3602 | "AP advertised VHT without HT, disabling both\n"); |
3603 | sdata->flags |= IEEE80211_STA_DISABLE_HT; | |
3604 | sdata->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 JB |
3605 | } |
3606 | } | |
3607 | ||
f2d9d270 JB |
3608 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3609 | cbss->channel, | |
3610 | ht_oper, vht_oper, | |
3611 | &chandef); | |
04ecd257 | 3612 | |
f2d9d270 JB |
3613 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3614 | local->rx_chains); | |
24398e39 | 3615 | |
9caf0364 JB |
3616 | rcu_read_unlock(); |
3617 | ||
04ecd257 JB |
3618 | /* will change later if needed */ |
3619 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3620 | ||
f2d9d270 JB |
3621 | /* |
3622 | * If this fails (possibly due to channel context sharing | |
3623 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3624 | * same control channel) try to use a smaller bandwidth. | |
3625 | */ | |
3626 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3627 | IEEE80211_CHANCTX_SHARED); | |
3628 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) | |
3629 | ifmgd->flags |= chandef_downgrade(&chandef); | |
3630 | return ret; | |
b17166a7 JB |
3631 | } |
3632 | ||
3633 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3634 | struct cfg80211_bss *cbss, bool assoc) | |
3635 | { | |
3636 | struct ieee80211_local *local = sdata->local; | |
3637 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3638 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3639 | struct sta_info *new_sta = NULL; | |
3640 | bool have_sta = false; | |
3641 | int err; | |
3642 | ||
3643 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3644 | return -EINVAL; | |
3645 | ||
3646 | if (assoc) { | |
3647 | rcu_read_lock(); | |
3648 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3649 | rcu_read_unlock(); | |
3650 | } | |
3651 | ||
3652 | if (!have_sta) { | |
3653 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3654 | if (!new_sta) | |
3655 | return -ENOMEM; | |
3656 | } | |
3657 | ||
3658 | mutex_lock(&local->mtx); | |
3659 | ieee80211_recalc_idle(sdata->local); | |
3660 | mutex_unlock(&local->mtx); | |
3661 | ||
13e0c8e3 | 3662 | if (new_sta) { |
5d6a1b06 JB |
3663 | u32 rates = 0, basic_rates = 0; |
3664 | bool have_higher_than_11mbit; | |
3665 | int min_rate = INT_MAX, min_rate_index = -1; | |
b17166a7 JB |
3666 | struct ieee80211_supported_band *sband; |
3667 | ||
3668 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3669 | ||
3670 | err = ieee80211_prep_channel(sdata, cbss); | |
3671 | if (err) { | |
3672 | sta_info_free(local, new_sta); | |
3673 | return err; | |
3674 | } | |
5d6a1b06 | 3675 | |
5d6a1b06 JB |
3676 | ieee80211_get_rates(sband, bss->supp_rates, |
3677 | bss->supp_rates_len, | |
3678 | &rates, &basic_rates, | |
3679 | &have_higher_than_11mbit, | |
3680 | &min_rate, &min_rate_index); | |
3681 | ||
3682 | /* | |
3683 | * This used to be a workaround for basic rates missing | |
3684 | * in the association response frame. Now that we no | |
3685 | * longer use the basic rates from there, it probably | |
3686 | * doesn't happen any more, but keep the workaround so | |
3687 | * in case some *other* APs are buggy in different ways | |
3688 | * we can connect -- with a warning. | |
3689 | */ | |
3690 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3691 | sdata_info(sdata, |
3692 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3693 | basic_rates = BIT(min_rate_index); |
3694 | } | |
3695 | ||
13e0c8e3 | 3696 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3697 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3698 | ||
3699 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3700 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3701 | have_higher_than_11mbit) |
3702 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3703 | else | |
3704 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
3705 | ||
3706 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
3707 | ||
8c358bcd JB |
3708 | /* set timing information */ |
3709 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
3710 | sdata->vif.bss_conf.sync_tsf = cbss->tsf; | |
3711 | sdata->vif.bss_conf.sync_device_ts = bss->device_ts; | |
3712 | ||
3713 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 3714 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
3715 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
3716 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
3717 | |
3718 | if (assoc) | |
13e0c8e3 | 3719 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 3720 | |
13e0c8e3 JB |
3721 | err = sta_info_insert(new_sta); |
3722 | new_sta = NULL; | |
a1cf775d | 3723 | if (err) { |
bdcbd8e0 JB |
3724 | sdata_info(sdata, |
3725 | "failed to insert STA entry for the AP (error %d)\n", | |
3726 | err); | |
a1cf775d JB |
3727 | return err; |
3728 | } | |
3729 | } else | |
b203ca39 | 3730 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
3731 | |
3732 | return 0; | |
3733 | } | |
3734 | ||
77fdaa12 JB |
3735 | /* config hooks */ |
3736 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
3737 | struct cfg80211_auth_request *req) | |
9c6bd790 | 3738 | { |
66e67e41 JB |
3739 | struct ieee80211_local *local = sdata->local; |
3740 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3741 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 3742 | u16 auth_alg; |
66e67e41 JB |
3743 | int err; |
3744 | ||
3745 | /* prepare auth data structure */ | |
9c6bd790 | 3746 | |
77fdaa12 JB |
3747 | switch (req->auth_type) { |
3748 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
3749 | auth_alg = WLAN_AUTH_OPEN; | |
3750 | break; | |
3751 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 3752 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 3753 | return -EOPNOTSUPP; |
77fdaa12 JB |
3754 | auth_alg = WLAN_AUTH_SHARED_KEY; |
3755 | break; | |
3756 | case NL80211_AUTHTYPE_FT: | |
3757 | auth_alg = WLAN_AUTH_FT; | |
3758 | break; | |
3759 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
3760 | auth_alg = WLAN_AUTH_LEAP; | |
3761 | break; | |
6b8ece3a JM |
3762 | case NL80211_AUTHTYPE_SAE: |
3763 | auth_alg = WLAN_AUTH_SAE; | |
3764 | break; | |
77fdaa12 JB |
3765 | default: |
3766 | return -EOPNOTSUPP; | |
60f8b39c | 3767 | } |
77fdaa12 | 3768 | |
6b8ece3a JM |
3769 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
3770 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 3771 | if (!auth_data) |
9c6bd790 | 3772 | return -ENOMEM; |
77fdaa12 | 3773 | |
66e67e41 | 3774 | auth_data->bss = req->bss; |
77fdaa12 | 3775 | |
6b8ece3a JM |
3776 | if (req->sae_data_len >= 4) { |
3777 | __le16 *pos = (__le16 *) req->sae_data; | |
3778 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
3779 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
3780 | memcpy(auth_data->data, req->sae_data + 4, | |
3781 | req->sae_data_len - 4); | |
3782 | auth_data->data_len += req->sae_data_len - 4; | |
3783 | } | |
3784 | ||
77fdaa12 | 3785 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
3786 | memcpy(&auth_data->data[auth_data->data_len], |
3787 | req->ie, req->ie_len); | |
3788 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 3789 | } |
77fdaa12 | 3790 | |
fffd0934 | 3791 | if (req->key && req->key_len) { |
66e67e41 JB |
3792 | auth_data->key_len = req->key_len; |
3793 | auth_data->key_idx = req->key_idx; | |
3794 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
3795 | } |
3796 | ||
66e67e41 | 3797 | auth_data->algorithm = auth_alg; |
60f8b39c | 3798 | |
66e67e41 | 3799 | /* try to authenticate/probe */ |
2a33bee2 | 3800 | |
66e67e41 | 3801 | mutex_lock(&ifmgd->mtx); |
2a33bee2 | 3802 | |
66e67e41 JB |
3803 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
3804 | ifmgd->assoc_data) { | |
3805 | err = -EBUSY; | |
3806 | goto err_free; | |
2a33bee2 GE |
3807 | } |
3808 | ||
66e67e41 JB |
3809 | if (ifmgd->auth_data) |
3810 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 3811 | |
66e67e41 JB |
3812 | /* prep auth_data so we don't go into idle on disassoc */ |
3813 | ifmgd->auth_data = auth_data; | |
af6b6374 | 3814 | |
66e67e41 | 3815 | if (ifmgd->associated) |
37ad3888 | 3816 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
af6b6374 | 3817 | |
bdcbd8e0 | 3818 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 3819 | |
a1cf775d JB |
3820 | err = ieee80211_prep_connection(sdata, req->bss, false); |
3821 | if (err) | |
66e67e41 | 3822 | goto err_clear; |
af6b6374 | 3823 | |
66e67e41 JB |
3824 | err = ieee80211_probe_auth(sdata); |
3825 | if (err) { | |
66e67e41 JB |
3826 | sta_info_destroy_addr(sdata, req->bss->bssid); |
3827 | goto err_clear; | |
3828 | } | |
3829 | ||
3830 | /* hold our own reference */ | |
3831 | cfg80211_ref_bss(auth_data->bss); | |
3832 | err = 0; | |
3833 | goto out_unlock; | |
3834 | ||
3835 | err_clear: | |
3d2abdfd EP |
3836 | memset(ifmgd->bssid, 0, ETH_ALEN); |
3837 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
3838 | ifmgd->auth_data = NULL; |
3839 | err_free: | |
3840 | kfree(auth_data); | |
3841 | out_unlock: | |
3842 | mutex_unlock(&ifmgd->mtx); | |
b2abb6e2 | 3843 | |
66e67e41 | 3844 | return err; |
af6b6374 JB |
3845 | } |
3846 | ||
77fdaa12 JB |
3847 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
3848 | struct cfg80211_assoc_request *req) | |
f0706e82 | 3849 | { |
66e67e41 | 3850 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 3851 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 3852 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 3853 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 3854 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 3855 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 3856 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 3857 | int i, err; |
f0706e82 | 3858 | |
66e67e41 JB |
3859 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
3860 | if (!assoc_data) | |
3861 | return -ENOMEM; | |
3862 | ||
9caf0364 JB |
3863 | rcu_read_lock(); |
3864 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
3865 | if (!ssidie) { | |
3866 | rcu_read_unlock(); | |
3867 | kfree(assoc_data); | |
3868 | return -EINVAL; | |
3869 | } | |
3870 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
3871 | assoc_data->ssid_len = ssidie[1]; | |
3872 | rcu_read_unlock(); | |
3873 | ||
77fdaa12 | 3874 | mutex_lock(&ifmgd->mtx); |
9c87ba67 | 3875 | |
66e67e41 | 3876 | if (ifmgd->associated) |
37ad3888 | 3877 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
66e67e41 JB |
3878 | |
3879 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
3880 | err = -EBUSY; | |
3881 | goto err_free; | |
af6b6374 | 3882 | } |
77fdaa12 | 3883 | |
66e67e41 JB |
3884 | if (ifmgd->assoc_data) { |
3885 | err = -EBUSY; | |
3886 | goto err_free; | |
3887 | } | |
77fdaa12 | 3888 | |
66e67e41 JB |
3889 | if (ifmgd->auth_data) { |
3890 | bool match; | |
3891 | ||
3892 | /* keep sta info, bssid if matching */ | |
b203ca39 | 3893 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 3894 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
3895 | } |
3896 | ||
66e67e41 | 3897 | /* prepare assoc data */ |
19c3b830 | 3898 | |
d8ec4433 JO |
3899 | ifmgd->beacon_crc_valid = false; |
3900 | ||
de5036aa JB |
3901 | /* |
3902 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
3903 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
3904 | * ciphers is configured as pairwise. | |
3905 | * We can set this to true for non-11n hardware, that'll be checked | |
3906 | * separately along with the peer capabilities. | |
3907 | */ | |
1c4cb928 | 3908 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
3909 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
3910 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 3911 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 3912 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 3913 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 3914 | netdev_info(sdata->dev, |
d545daba | 3915 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
3916 | } |
3917 | } | |
77fdaa12 | 3918 | |
d545daba | 3919 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 3920 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
3921 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
3922 | } | |
ef96a842 | 3923 | |
4e74bfdb JB |
3924 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
3925 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
3926 | if (!sband->ht_cap.ht_supported || | |
1c4cb928 | 3927 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { |
a8243b72 | 3928 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
1b49de26 JB |
3929 | if (!bss->wmm_used) |
3930 | netdev_info(sdata->dev, | |
3931 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 3932 | } |
4e74bfdb | 3933 | |
d545daba MP |
3934 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
3935 | if (!sband->vht_cap.vht_supported || | |
3936 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { | |
3937 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
1b49de26 JB |
3938 | if (!bss->wmm_used) |
3939 | netdev_info(sdata->dev, | |
3940 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
3941 | } |
3942 | ||
ef96a842 BG |
3943 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
3944 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
3945 | sizeof(ifmgd->ht_capa_mask)); | |
3946 | ||
77fdaa12 | 3947 | if (req->ie && req->ie_len) { |
66e67e41 JB |
3948 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
3949 | assoc_data->ie_len = req->ie_len; | |
3950 | } | |
f679f65d | 3951 | |
66e67e41 | 3952 | assoc_data->bss = req->bss; |
f679f65d | 3953 | |
af6b6374 JB |
3954 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
3955 | if (ifmgd->powersave) | |
04ecd257 | 3956 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 3957 | else |
04ecd257 | 3958 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 3959 | } else |
04ecd257 | 3960 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 3961 | |
66e67e41 | 3962 | assoc_data->capability = req->bss->capability; |
32c5057b JB |
3963 | assoc_data->wmm = bss->wmm_used && |
3964 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
66e67e41 JB |
3965 | assoc_data->supp_rates = bss->supp_rates; |
3966 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 3967 | |
9caf0364 | 3968 | rcu_read_lock(); |
9dde6423 JB |
3969 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
3970 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
3971 | assoc_data->ap_ht_param = | |
3972 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
3973 | else | |
a8243b72 | 3974 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
3975 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
3976 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
3977 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
3978 | sizeof(struct ieee80211_vht_cap)); | |
3979 | else | |
3980 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 3981 | rcu_read_unlock(); |
63f170e0 | 3982 | |
ab13315a KV |
3983 | if (bss->wmm_used && bss->uapsd_supported && |
3984 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) { | |
76f0303d | 3985 | assoc_data->uapsd = true; |
ab13315a KV |
3986 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
3987 | } else { | |
76f0303d | 3988 | assoc_data->uapsd = false; |
ab13315a KV |
3989 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
3990 | } | |
3991 | ||
77fdaa12 | 3992 | if (req->prev_bssid) |
66e67e41 | 3993 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
3994 | |
3995 | if (req->use_mfp) { | |
3996 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
3997 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
3998 | } else { | |
3999 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4000 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4001 | } | |
4002 | ||
4003 | if (req->crypto.control_port) | |
4004 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4005 | else | |
4006 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4007 | ||
a621fa4d JB |
4008 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4009 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
4010 | ||
66e67e41 JB |
4011 | /* kick off associate process */ |
4012 | ||
4013 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4014 | ifmgd->dtim_period = 0; |
66e67e41 | 4015 | |
a1cf775d JB |
4016 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4017 | if (err) | |
4018 | goto err_clear; | |
66e67e41 | 4019 | |
c65dd147 EG |
4020 | rcu_read_lock(); |
4021 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4022 | |
c65dd147 EG |
4023 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4024 | !beacon_ies) { | |
4025 | /* | |
4026 | * Wait up to one beacon interval ... | |
4027 | * should this be more if we miss one? | |
4028 | */ | |
4029 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4030 | ifmgd->bssid); | |
4031 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
4032 | assoc_data->need_beacon = true; | |
4033 | } else if (beacon_ies) { | |
4034 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4035 | beacon_ies->data, | |
4036 | beacon_ies->len); | |
4037 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { | |
4038 | const struct ieee80211_tim_ie *tim; | |
4039 | tim = (void *)(tim_ie + 2); | |
4040 | ifmgd->dtim_period = tim->dtim_period; | |
826262c3 | 4041 | } |
66e67e41 | 4042 | assoc_data->have_beacon = true; |
66e67e41 | 4043 | assoc_data->timeout = jiffies; |
c65dd147 EG |
4044 | } else { |
4045 | assoc_data->timeout = jiffies; | |
66e67e41 | 4046 | } |
c65dd147 EG |
4047 | rcu_read_unlock(); |
4048 | ||
66e67e41 JB |
4049 | run_again(ifmgd, assoc_data->timeout); |
4050 | ||
fcff4f10 PS |
4051 | if (bss->corrupt_data) { |
4052 | char *corrupt_type = "data"; | |
4053 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4054 | if (bss->corrupt_data & | |
4055 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4056 | corrupt_type = "beacon and probe response"; | |
4057 | else | |
4058 | corrupt_type = "beacon"; | |
4059 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4060 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4061 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4062 | corrupt_type); | |
fcff4f10 PS |
4063 | } |
4064 | ||
66e67e41 JB |
4065 | err = 0; |
4066 | goto out; | |
4067 | err_clear: | |
3d2abdfd EP |
4068 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4069 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4070 | ifmgd->assoc_data = NULL; |
4071 | err_free: | |
4072 | kfree(assoc_data); | |
4073 | out: | |
4074 | mutex_unlock(&ifmgd->mtx); | |
4075 | ||
4076 | return err; | |
f0706e82 JB |
4077 | } |
4078 | ||
77fdaa12 | 4079 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4080 | struct cfg80211_deauth_request *req) |
f0706e82 | 4081 | { |
46900298 | 4082 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4083 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4084 | bool tx = !req->local_state_change; |
86552017 | 4085 | bool sent_frame = false; |
f0706e82 | 4086 | |
77fdaa12 JB |
4087 | mutex_lock(&ifmgd->mtx); |
4088 | ||
bdcbd8e0 JB |
4089 | sdata_info(sdata, |
4090 | "deauthenticating from %pM by local choice (reason=%d)\n", | |
4091 | req->bssid, req->reason_code); | |
0ff71613 | 4092 | |
86552017 | 4093 | if (ifmgd->auth_data) { |
8c7d857c | 4094 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4095 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4096 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4097 | req->reason_code, tx, |
37ad3888 | 4098 | frame_buf); |
86552017 JB |
4099 | ieee80211_destroy_auth_data(sdata, false); |
4100 | mutex_unlock(&ifmgd->mtx); | |
4101 | ||
4102 | sent_frame = tx; | |
4103 | goto out; | |
8c7d857c EG |
4104 | } |
4105 | ||
86552017 JB |
4106 | if (ifmgd->associated && |
4107 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
4108 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4109 | req->reason_code, tx, frame_buf); | |
4110 | sent_frame = tx; | |
4111 | } | |
37ad3888 JB |
4112 | mutex_unlock(&ifmgd->mtx); |
4113 | ||
86552017 | 4114 | out: |
7da7cc1d | 4115 | mutex_lock(&sdata->local->mtx); |
bc83b681 | 4116 | ieee80211_recalc_idle(sdata->local); |
7da7cc1d | 4117 | mutex_unlock(&sdata->local->mtx); |
bc83b681 | 4118 | |
86552017 JB |
4119 | if (sent_frame) |
4120 | __cfg80211_send_deauth(sdata->dev, frame_buf, | |
4121 | IEEE80211_DEAUTH_FRAME_LEN); | |
4122 | ||
f0706e82 JB |
4123 | return 0; |
4124 | } | |
84363e6e | 4125 | |
77fdaa12 | 4126 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4127 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4128 | { |
77fdaa12 | 4129 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4130 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4131 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4132 | |
77fdaa12 | 4133 | mutex_lock(&ifmgd->mtx); |
10f644a4 | 4134 | |
8d8b261a JB |
4135 | /* |
4136 | * cfg80211 should catch this ... but it's racy since | |
4137 | * we can receive a disassoc frame, process it, hand it | |
4138 | * to cfg80211 while that's in a locked section already | |
4139 | * trying to tell us that the user wants to disconnect. | |
4140 | */ | |
0c1ad2ca | 4141 | if (ifmgd->associated != req->bss) { |
77fdaa12 JB |
4142 | mutex_unlock(&ifmgd->mtx); |
4143 | return -ENOLINK; | |
4144 | } | |
4145 | ||
bdcbd8e0 JB |
4146 | sdata_info(sdata, |
4147 | "disassociating from %pM by local choice (reason=%d)\n", | |
4148 | req->bss->bssid, req->reason_code); | |
0ff71613 | 4149 | |
e69e95db | 4150 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4151 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4152 | req->reason_code, !req->local_state_change, | |
4153 | frame_buf); | |
77fdaa12 | 4154 | mutex_unlock(&ifmgd->mtx); |
10f644a4 | 4155 | |
6ae16775 AQ |
4156 | __cfg80211_send_disassoc(sdata->dev, frame_buf, |
4157 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4158 | |
7da7cc1d | 4159 | mutex_lock(&sdata->local->mtx); |
bc83b681 | 4160 | ieee80211_recalc_idle(sdata->local); |
7da7cc1d | 4161 | mutex_unlock(&sdata->local->mtx); |
bc83b681 | 4162 | |
10f644a4 JB |
4163 | return 0; |
4164 | } | |
026331c4 | 4165 | |
afa762f6 | 4166 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4167 | { |
4168 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4169 | ||
4170 | mutex_lock(&ifmgd->mtx); | |
4171 | if (ifmgd->assoc_data) | |
4172 | ieee80211_destroy_assoc_data(sdata, false); | |
4173 | if (ifmgd->auth_data) | |
4174 | ieee80211_destroy_auth_data(sdata, false); | |
4175 | del_timer_sync(&ifmgd->timer); | |
4176 | mutex_unlock(&ifmgd->mtx); | |
4177 | } | |
4178 | ||
a97c13c3 JO |
4179 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4180 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4181 | gfp_t gfp) | |
4182 | { | |
4183 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4184 | ||
b5878a2d JB |
4185 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4186 | ||
a97c13c3 JO |
4187 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4188 | } | |
4189 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |