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f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
4 | * Copyright 2004, Instant802 Networks, Inc. | |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
8 | * | |
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> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/if_arp.h> | |
19 | #include <linux/wireless.h> | |
20 | #include <linux/random.h> | |
21 | #include <linux/etherdevice.h> | |
d0709a65 | 22 | #include <linux/rtnetlink.h> |
f0706e82 | 23 | #include <net/iw_handler.h> |
f0706e82 | 24 | #include <net/mac80211.h> |
60f8b39c | 25 | |
f0706e82 | 26 | #include "ieee80211_i.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f709fc69 | 29 | #include "mesh.h" |
f0706e82 | 30 | |
6042a3e3 | 31 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
32 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
33 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
34 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
35 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
36 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 37 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
38 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
39 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
40 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
41 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 42 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 | 43 | |
f0706e82 JB |
44 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
45 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 46 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
47 | |
48 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
49 | ||
50 | ||
5484e237 JB |
51 | /* utils */ |
52 | static int ecw2cw(int ecw) | |
60f8b39c | 53 | { |
5484e237 | 54 | return (1 << ecw) - 1; |
60f8b39c JB |
55 | } |
56 | ||
57 | static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie) | |
43ac2ca3 JM |
58 | { |
59 | u8 *end, *pos; | |
60 | ||
61 | pos = bss->ies; | |
62 | if (pos == NULL) | |
63 | return NULL; | |
64 | end = pos + bss->ies_len; | |
65 | ||
66 | while (pos + 1 < end) { | |
67 | if (pos + 2 + pos[1] > end) | |
68 | break; | |
69 | if (pos[0] == ie) | |
70 | return pos; | |
71 | pos += 2 + pos[1]; | |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
9ac19a90 JB |
77 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
78 | struct ieee80211_supported_band *sband, | |
79 | u64 *rates) | |
80 | { | |
81 | int i, j, count; | |
82 | *rates = 0; | |
83 | count = 0; | |
84 | for (i = 0; i < bss->supp_rates_len; i++) { | |
85 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
86 | ||
87 | for (j = 0; j < sband->n_bitrates; j++) | |
88 | if (sband->bitrates[j].bitrate == rate) { | |
89 | *rates |= BIT(j); | |
90 | count++; | |
91 | break; | |
92 | } | |
93 | } | |
94 | ||
95 | return count; | |
96 | } | |
97 | ||
60f8b39c JB |
98 | /* frame sending functions */ |
99 | void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, | |
100 | int encrypt) | |
101 | { | |
102 | skb->dev = sdata->local->mdev; | |
103 | skb_set_mac_header(skb, 0); | |
104 | skb_set_network_header(skb, 0); | |
105 | skb_set_transport_header(skb, 0); | |
e2839d8f | 106 | |
60f8b39c JB |
107 | skb->iif = sdata->dev->ifindex; |
108 | skb->do_not_encrypt = !encrypt; | |
109 | ||
110 | dev_queue_xmit(skb); | |
111 | } | |
112 | ||
113 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
114 | struct ieee80211_if_sta *ifsta, | |
115 | int transaction, u8 *extra, size_t extra_len, | |
116 | int encrypt) | |
117 | { | |
118 | struct ieee80211_local *local = sdata->local; | |
119 | struct sk_buff *skb; | |
120 | struct ieee80211_mgmt *mgmt; | |
121 | ||
122 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
123 | sizeof(*mgmt) + 6 + extra_len); | |
124 | if (!skb) { | |
125 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
126 | "frame\n", sdata->dev->name); | |
127 | return; | |
128 | } | |
129 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
130 | ||
131 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
132 | memset(mgmt, 0, 24 + 6); | |
133 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
134 | IEEE80211_STYPE_AUTH); | |
135 | if (encrypt) | |
136 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
137 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
138 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
139 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
140 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
141 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
142 | ifsta->auth_transaction = transaction + 1; | |
143 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
144 | if (extra) | |
145 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
146 | ||
147 | ieee80211_sta_tx(sdata, skb, encrypt); | |
148 | } | |
149 | ||
0a51b27e JB |
150 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
151 | u8 *ssid, size_t ssid_len) | |
60f8b39c JB |
152 | { |
153 | struct ieee80211_local *local = sdata->local; | |
154 | struct ieee80211_supported_band *sband; | |
155 | struct sk_buff *skb; | |
156 | struct ieee80211_mgmt *mgmt; | |
157 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
158 | int i; | |
159 | ||
160 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
161 | if (!skb) { | |
162 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
163 | "request\n", sdata->dev->name); | |
164 | return; | |
165 | } | |
166 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
167 | ||
168 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
169 | memset(mgmt, 0, 24); | |
170 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
171 | IEEE80211_STYPE_PROBE_REQ); | |
172 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
173 | if (dst) { | |
174 | memcpy(mgmt->da, dst, ETH_ALEN); | |
175 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
176 | } else { | |
177 | memset(mgmt->da, 0xff, ETH_ALEN); | |
178 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
179 | } | |
180 | pos = skb_put(skb, 2 + ssid_len); | |
181 | *pos++ = WLAN_EID_SSID; | |
182 | *pos++ = ssid_len; | |
183 | memcpy(pos, ssid, ssid_len); | |
184 | ||
185 | supp_rates = skb_put(skb, 2); | |
186 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
187 | supp_rates[1] = 0; | |
188 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
189 | ||
190 | for (i = 0; i < sband->n_bitrates; i++) { | |
191 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
192 | if (esupp_rates) { | |
193 | pos = skb_put(skb, 1); | |
194 | esupp_rates[1]++; | |
195 | } else if (supp_rates[1] == 8) { | |
196 | esupp_rates = skb_put(skb, 3); | |
197 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
198 | esupp_rates[1] = 1; | |
199 | pos = &esupp_rates[2]; | |
200 | } else { | |
201 | pos = skb_put(skb, 1); | |
202 | supp_rates[1]++; | |
203 | } | |
204 | *pos = rate->bitrate / 5; | |
205 | } | |
206 | ||
207 | ieee80211_sta_tx(sdata, skb, 0); | |
208 | } | |
209 | ||
9ac19a90 JB |
210 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
211 | struct ieee80211_if_sta *ifsta) | |
212 | { | |
213 | struct ieee80211_local *local = sdata->local; | |
214 | struct sk_buff *skb; | |
215 | struct ieee80211_mgmt *mgmt; | |
216 | u8 *pos, *ies, *ht_add_ie; | |
217 | int i, len, count, rates_len, supp_rates_len; | |
218 | u16 capab; | |
219 | struct ieee80211_sta_bss *bss; | |
220 | int wmm = 0; | |
221 | struct ieee80211_supported_band *sband; | |
222 | u64 rates = 0; | |
223 | ||
224 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
225 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
226 | ifsta->ssid_len); | |
227 | if (!skb) { | |
228 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
229 | "frame\n", sdata->dev->name); | |
230 | return; | |
231 | } | |
232 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
233 | ||
234 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
235 | ||
236 | capab = ifsta->capab; | |
237 | ||
238 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
239 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
240 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
241 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
242 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
243 | } | |
244 | ||
245 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, | |
246 | local->hw.conf.channel->center_freq, | |
247 | ifsta->ssid, ifsta->ssid_len); | |
248 | if (bss) { | |
249 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
250 | capab |= WLAN_CAPABILITY_PRIVACY; | |
251 | if (bss->wmm_used) | |
252 | wmm = 1; | |
253 | ||
254 | /* get all rates supported by the device and the AP as | |
255 | * some APs don't like getting a superset of their rates | |
256 | * in the association request (e.g. D-Link DAP 1353 in | |
257 | * b-only mode) */ | |
258 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
259 | ||
260 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
261 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
262 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
263 | ||
264 | ieee80211_rx_bss_put(local, bss); | |
265 | } else { | |
266 | rates = ~0; | |
267 | rates_len = sband->n_bitrates; | |
268 | } | |
269 | ||
270 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
271 | memset(mgmt, 0, 24); | |
272 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
273 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
274 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
275 | ||
276 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { | |
277 | skb_put(skb, 10); | |
278 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
279 | IEEE80211_STYPE_REASSOC_REQ); | |
280 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
281 | mgmt->u.reassoc_req.listen_interval = | |
282 | cpu_to_le16(local->hw.conf.listen_interval); | |
283 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
284 | ETH_ALEN); | |
285 | } else { | |
286 | skb_put(skb, 4); | |
287 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
288 | IEEE80211_STYPE_ASSOC_REQ); | |
289 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
290 | mgmt->u.reassoc_req.listen_interval = | |
291 | cpu_to_le16(local->hw.conf.listen_interval); | |
292 | } | |
293 | ||
294 | /* SSID */ | |
295 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
296 | *pos++ = WLAN_EID_SSID; | |
297 | *pos++ = ifsta->ssid_len; | |
298 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
299 | ||
300 | /* add all rates which were marked to be used above */ | |
301 | supp_rates_len = rates_len; | |
302 | if (supp_rates_len > 8) | |
303 | supp_rates_len = 8; | |
304 | ||
305 | len = sband->n_bitrates; | |
306 | pos = skb_put(skb, supp_rates_len + 2); | |
307 | *pos++ = WLAN_EID_SUPP_RATES; | |
308 | *pos++ = supp_rates_len; | |
309 | ||
310 | count = 0; | |
311 | for (i = 0; i < sband->n_bitrates; i++) { | |
312 | if (BIT(i) & rates) { | |
313 | int rate = sband->bitrates[i].bitrate; | |
314 | *pos++ = (u8) (rate / 5); | |
315 | if (++count == 8) | |
316 | break; | |
317 | } | |
318 | } | |
319 | ||
320 | if (rates_len > count) { | |
321 | pos = skb_put(skb, rates_len - count + 2); | |
322 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
323 | *pos++ = rates_len - count; | |
324 | ||
325 | for (i++; i < sband->n_bitrates; i++) { | |
326 | if (BIT(i) & rates) { | |
327 | int rate = sband->bitrates[i].bitrate; | |
328 | *pos++ = (u8) (rate / 5); | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
334 | /* 1. power capabilities */ | |
335 | pos = skb_put(skb, 4); | |
336 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
337 | *pos++ = 2; | |
338 | *pos++ = 0; /* min tx power */ | |
339 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
340 | ||
341 | /* 2. supported channels */ | |
342 | /* TODO: get this in reg domain format */ | |
343 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
344 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
345 | *pos++ = 2 * sband->n_channels; | |
346 | for (i = 0; i < sband->n_channels; i++) { | |
347 | *pos++ = ieee80211_frequency_to_channel( | |
348 | sband->channels[i].center_freq); | |
349 | *pos++ = 1; /* one channel in the subband*/ | |
350 | } | |
351 | } | |
352 | ||
353 | if (ifsta->extra_ie) { | |
354 | pos = skb_put(skb, ifsta->extra_ie_len); | |
355 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
356 | } | |
357 | ||
358 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
359 | pos = skb_put(skb, 9); | |
360 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
361 | *pos++ = 7; /* len */ | |
362 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
363 | *pos++ = 0x50; | |
364 | *pos++ = 0xf2; | |
365 | *pos++ = 2; /* WME */ | |
366 | *pos++ = 0; /* WME info */ | |
367 | *pos++ = 1; /* WME ver */ | |
368 | *pos++ = 0; | |
369 | } | |
370 | ||
371 | /* wmm support is a must to HT */ | |
372 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && | |
373 | sband->ht_info.ht_supported && | |
374 | (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) { | |
375 | struct ieee80211_ht_addt_info *ht_add_info = | |
376 | (struct ieee80211_ht_addt_info *)ht_add_ie; | |
377 | u16 cap = sband->ht_info.cap; | |
378 | __le16 tmp; | |
379 | u32 flags = local->hw.conf.channel->flags; | |
380 | ||
381 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
382 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
383 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
384 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
385 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
386 | } | |
387 | break; | |
388 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
389 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
390 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
391 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
392 | } | |
393 | break; | |
394 | } | |
395 | ||
396 | tmp = cpu_to_le16(cap); | |
397 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
398 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
399 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
400 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
401 | memcpy(pos, &tmp, sizeof(u16)); | |
402 | pos += sizeof(u16); | |
403 | /* TODO: needs a define here for << 2 */ | |
404 | *pos++ = sband->ht_info.ampdu_factor | | |
405 | (sband->ht_info.ampdu_density << 2); | |
406 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
407 | } | |
408 | ||
409 | kfree(ifsta->assocreq_ies); | |
410 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
411 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); | |
412 | if (ifsta->assocreq_ies) | |
413 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
414 | ||
415 | ieee80211_sta_tx(sdata, skb, 0); | |
416 | } | |
417 | ||
418 | ||
ef422bc0 JB |
419 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
420 | u16 stype, u16 reason) | |
9ac19a90 JB |
421 | { |
422 | struct ieee80211_local *local = sdata->local; | |
ef422bc0 | 423 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
9ac19a90 JB |
424 | struct sk_buff *skb; |
425 | struct ieee80211_mgmt *mgmt; | |
426 | ||
427 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
428 | if (!skb) { | |
ef422bc0 JB |
429 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
430 | "deauth/disassoc frame\n", sdata->dev->name); | |
9ac19a90 JB |
431 | return; |
432 | } | |
433 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
434 | ||
435 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
436 | memset(mgmt, 0, 24); | |
437 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
438 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
439 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
ef422bc0 | 440 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 441 | skb_put(skb, 2); |
ef422bc0 | 442 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
443 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
444 | ||
445 | ieee80211_sta_tx(sdata, skb, 0); | |
446 | } | |
447 | ||
60f8b39c | 448 | /* MLME */ |
f698d856 | 449 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
b079ada7 | 450 | struct ieee80211_sta_bss *bss) |
e2839d8f | 451 | { |
e2839d8f VK |
452 | struct ieee80211_local *local = sdata->local; |
453 | int i, have_higher_than_11mbit = 0; | |
454 | ||
e2839d8f VK |
455 | /* cf. IEEE 802.11 9.2.12 */ |
456 | for (i = 0; i < bss->supp_rates_len; i++) | |
457 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
458 | have_higher_than_11mbit = 1; | |
459 | ||
460 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
461 | have_higher_than_11mbit) | |
462 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
463 | else | |
464 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
465 | ||
3d35f7c6 | 466 | ieee80211_set_wmm_default(sdata); |
e2839d8f VK |
467 | } |
468 | ||
f698d856 | 469 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
f0706e82 JB |
470 | struct ieee80211_if_sta *ifsta, |
471 | u8 *wmm_param, size_t wmm_param_len) | |
472 | { | |
f0706e82 JB |
473 | struct ieee80211_tx_queue_params params; |
474 | size_t left; | |
475 | int count; | |
476 | u8 *pos; | |
477 | ||
3434fbd3 JB |
478 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
479 | return; | |
480 | ||
481 | if (!wmm_param) | |
482 | return; | |
483 | ||
f0706e82 JB |
484 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
485 | return; | |
486 | count = wmm_param[6] & 0x0f; | |
487 | if (count == ifsta->wmm_last_param_set) | |
488 | return; | |
489 | ifsta->wmm_last_param_set = count; | |
490 | ||
491 | pos = wmm_param + 8; | |
492 | left = wmm_param_len - 8; | |
493 | ||
494 | memset(¶ms, 0, sizeof(params)); | |
495 | ||
496 | if (!local->ops->conf_tx) | |
497 | return; | |
498 | ||
499 | local->wmm_acm = 0; | |
500 | for (; left >= 4; left -= 4, pos += 4) { | |
501 | int aci = (pos[0] >> 5) & 0x03; | |
502 | int acm = (pos[0] >> 4) & 0x01; | |
503 | int queue; | |
504 | ||
505 | switch (aci) { | |
506 | case 1: | |
e100bb64 | 507 | queue = 3; |
988c0f72 | 508 | if (acm) |
f0706e82 | 509 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
510 | break; |
511 | case 2: | |
e100bb64 | 512 | queue = 1; |
988c0f72 | 513 | if (acm) |
f0706e82 | 514 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
515 | break; |
516 | case 3: | |
e100bb64 | 517 | queue = 0; |
988c0f72 | 518 | if (acm) |
f0706e82 | 519 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
520 | break; |
521 | case 0: | |
522 | default: | |
e100bb64 | 523 | queue = 2; |
988c0f72 | 524 | if (acm) |
f0706e82 | 525 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
526 | break; |
527 | } | |
528 | ||
529 | params.aifs = pos[0] & 0x0f; | |
530 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
531 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 532 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 533 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 534 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 535 | "cWmin=%d cWmax=%d txop=%d\n", |
f698d856 | 536 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
537 | params.cw_max, params.txop); |
538 | #endif | |
f0706e82 JB |
539 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
540 | * AC for now) */ | |
541 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
542 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
f698d856 | 543 | "parameters for queue %d\n", local->mdev->name, queue); |
f0706e82 JB |
544 | } |
545 | } | |
546 | } | |
547 | ||
50c4afb9 JL |
548 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
549 | bool use_protection, | |
550 | bool use_short_preamble) | |
5628221c | 551 | { |
471b3efd | 552 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
ebd74487 | 553 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 554 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 555 | DECLARE_MAC_BUF(mac); |
ebd74487 | 556 | #endif |
471b3efd | 557 | u32 changed = 0; |
5628221c | 558 | |
471b3efd | 559 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 560 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c DD |
561 | if (net_ratelimit()) { |
562 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 563 | "%s)\n", |
471b3efd | 564 | sdata->dev->name, |
5628221c | 565 | use_protection ? "enabled" : "disabled", |
0795af57 | 566 | print_mac(mac, ifsta->bssid)); |
5628221c | 567 | } |
f4ea83dd | 568 | #endif |
471b3efd JB |
569 | bss_conf->use_cts_prot = use_protection; |
570 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 571 | } |
7e9ed188 | 572 | |
d43c7b37 | 573 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 574 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
575 | if (net_ratelimit()) { |
576 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 577 | " (BSSID=%s)\n", |
471b3efd | 578 | sdata->dev->name, |
d43c7b37 | 579 | use_short_preamble ? "short" : "long", |
0795af57 | 580 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 581 | } |
f4ea83dd | 582 | #endif |
d43c7b37 | 583 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 584 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 585 | } |
d9430a32 | 586 | |
471b3efd | 587 | return changed; |
5628221c DD |
588 | } |
589 | ||
50c4afb9 JL |
590 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
591 | u8 erp_value) | |
592 | { | |
593 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
594 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
595 | ||
596 | return ieee80211_handle_protect_preamb(sdata, | |
597 | use_protection, use_short_preamble); | |
598 | } | |
599 | ||
600 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
601 | struct ieee80211_sta_bss *bss) | |
602 | { | |
603 | u32 changed = 0; | |
604 | ||
605 | if (bss->has_erp_value) | |
606 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
607 | else { | |
608 | u16 capab = bss->capability; | |
609 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
610 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
611 | } | |
612 | ||
613 | return changed; | |
614 | } | |
615 | ||
f5e5bf25 TW |
616 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
617 | struct ieee80211_if_sta *ifsta) | |
618 | { | |
619 | union iwreq_data wrqu; | |
620 | memset(&wrqu, 0, sizeof(wrqu)); | |
621 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) | |
622 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
623 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
624 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
625 | } | |
626 | ||
f698d856 | 627 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
628 | struct ieee80211_if_sta *ifsta) |
629 | { | |
f0706e82 JB |
630 | union iwreq_data wrqu; |
631 | ||
f0706e82 | 632 | if (ifsta->assocreq_ies) { |
087d833e JM |
633 | memset(&wrqu, 0, sizeof(wrqu)); |
634 | wrqu.data.length = ifsta->assocreq_ies_len; | |
b171e19e | 635 | wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu, |
087d833e | 636 | ifsta->assocreq_ies); |
f0706e82 | 637 | } |
087d833e JM |
638 | if (ifsta->assocresp_ies) { |
639 | memset(&wrqu, 0, sizeof(wrqu)); | |
640 | wrqu.data.length = ifsta->assocresp_ies_len; | |
b171e19e | 641 | wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu, |
087d833e | 642 | ifsta->assocresp_ies); |
f0706e82 | 643 | } |
f0706e82 JB |
644 | } |
645 | ||
646 | ||
f698d856 | 647 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
f5e5bf25 | 648 | struct ieee80211_if_sta *ifsta) |
f0706e82 | 649 | { |
471b3efd | 650 | struct ieee80211_local *local = sdata->local; |
38668c05 | 651 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
471b3efd | 652 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 653 | |
f5e5bf25 | 654 | struct ieee80211_sta_bss *bss; |
d6f2da5b | 655 | |
f5e5bf25 | 656 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 657 | |
f5e5bf25 TW |
658 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
659 | return; | |
21c0cbe7 | 660 | |
f5e5bf25 TW |
661 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
662 | conf->channel->center_freq, | |
663 | ifsta->ssid, ifsta->ssid_len); | |
664 | if (bss) { | |
665 | /* set timing information */ | |
666 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
667 | sdata->bss_conf.timestamp = bss->timestamp; | |
668 | sdata->bss_conf.dtim_period = bss->dtim_period; | |
21c0cbe7 | 669 | |
f5e5bf25 | 670 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
9ac19a90 JB |
671 | |
672 | ieee80211_rx_bss_put(local, bss); | |
f0706e82 JB |
673 | } |
674 | ||
9ac19a90 JB |
675 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
676 | changed |= BSS_CHANGED_HT; | |
677 | sdata->bss_conf.assoc_ht = 1; | |
678 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
679 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
f0706e82 | 680 | } |
3434fbd3 | 681 | |
9ac19a90 JB |
682 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
683 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); | |
684 | ieee80211_sta_send_associnfo(sdata, ifsta); | |
9306102e | 685 | |
9ac19a90 JB |
686 | ifsta->last_probe = jiffies; |
687 | ieee80211_led_assoc(local, 1); | |
9306102e | 688 | |
9ac19a90 JB |
689 | sdata->bss_conf.assoc = 1; |
690 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 | 691 | |
9ac19a90 JB |
692 | netif_tx_start_all_queues(sdata->dev); |
693 | netif_carrier_on(sdata->dev); | |
f0706e82 | 694 | |
9ac19a90 | 695 | ieee80211_sta_send_apinfo(sdata, ifsta); |
f0706e82 JB |
696 | } |
697 | ||
9ac19a90 JB |
698 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
699 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 700 | { |
9ac19a90 | 701 | DECLARE_MAC_BUF(mac); |
f0706e82 | 702 | |
9ac19a90 JB |
703 | ifsta->direct_probe_tries++; |
704 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
705 | printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n", | |
706 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
707 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
708 | return; |
709 | } | |
f0706e82 | 710 | |
9ac19a90 JB |
711 | printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n", |
712 | sdata->dev->name, print_mac(mac, ifsta->bssid), | |
713 | ifsta->direct_probe_tries); | |
f0706e82 | 714 | |
9ac19a90 | 715 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 716 | |
9ac19a90 JB |
717 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
718 | ||
719 | /* Direct probe is sent to broadcast address as some APs | |
720 | * will not answer to direct packet in unassociated state. | |
721 | */ | |
722 | ieee80211_send_probe_req(sdata, NULL, | |
723 | ifsta->ssid, ifsta->ssid_len); | |
724 | ||
725 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
60f8b39c | 726 | } |
f0706e82 | 727 | |
9ac19a90 JB |
728 | |
729 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, | |
730 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 731 | { |
9ac19a90 | 732 | DECLARE_MAC_BUF(mac); |
f0706e82 | 733 | |
9ac19a90 JB |
734 | ifsta->auth_tries++; |
735 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
736 | printk(KERN_DEBUG "%s: authentication with AP %s" | |
737 | " timed out\n", | |
738 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
739 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
740 | return; |
741 | } | |
f0706e82 | 742 | |
9ac19a90 JB |
743 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
744 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", | |
745 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 | 746 | |
9ac19a90 JB |
747 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
748 | ||
749 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
f0706e82 JB |
750 | } |
751 | ||
aa458d17 TW |
752 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
753 | struct ieee80211_if_sta *ifsta, bool deauth, | |
754 | bool self_disconnected, u16 reason) | |
755 | { | |
756 | struct ieee80211_local *local = sdata->local; | |
757 | struct sta_info *sta; | |
f5e5bf25 | 758 | u32 changed = BSS_CHANGED_ASSOC; |
aa458d17 TW |
759 | |
760 | rcu_read_lock(); | |
761 | ||
762 | sta = sta_info_get(local, ifsta->bssid); | |
763 | if (!sta) { | |
764 | rcu_read_unlock(); | |
765 | return; | |
766 | } | |
767 | ||
768 | if (deauth) { | |
769 | ifsta->direct_probe_tries = 0; | |
770 | ifsta->auth_tries = 0; | |
771 | } | |
772 | ifsta->assoc_scan_tries = 0; | |
773 | ifsta->assoc_tries = 0; | |
774 | ||
24e64622 | 775 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
776 | netif_carrier_off(sdata->dev); |
777 | ||
778 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); | |
779 | ||
780 | if (self_disconnected) { | |
781 | if (deauth) | |
ef422bc0 JB |
782 | ieee80211_send_deauth_disassoc(sdata, |
783 | IEEE80211_STYPE_DEAUTH, reason); | |
aa458d17 | 784 | else |
ef422bc0 JB |
785 | ieee80211_send_deauth_disassoc(sdata, |
786 | IEEE80211_STYPE_DISASSOC, reason); | |
aa458d17 TW |
787 | } |
788 | ||
f5e5bf25 TW |
789 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
790 | changed |= ieee80211_reset_erp_info(sdata); | |
791 | ||
792 | if (sdata->bss_conf.assoc_ht) | |
793 | changed |= BSS_CHANGED_HT; | |
794 | ||
795 | sdata->bss_conf.assoc_ht = 0; | |
796 | sdata->bss_conf.ht_conf = NULL; | |
797 | sdata->bss_conf.ht_bss_conf = NULL; | |
798 | ||
799 | ieee80211_led_assoc(local, 0); | |
800 | sdata->bss_conf.assoc = 0; | |
801 | ||
802 | ieee80211_sta_send_apinfo(sdata, ifsta); | |
aa458d17 TW |
803 | |
804 | if (self_disconnected) | |
805 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
806 | ||
807 | sta_info_unlink(&sta); | |
808 | ||
809 | rcu_read_unlock(); | |
810 | ||
811 | sta_info_destroy(sta); | |
812 | } | |
f0706e82 | 813 | |
9ac19a90 JB |
814 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
815 | { | |
816 | if (!sdata || !sdata->default_key || | |
817 | sdata->default_key->conf.alg != ALG_WEP) | |
818 | return 0; | |
819 | return 1; | |
820 | } | |
821 | ||
f698d856 | 822 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
823 | struct ieee80211_if_sta *ifsta) |
824 | { | |
f698d856 | 825 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 826 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
827 | int bss_privacy; |
828 | int wep_privacy; | |
829 | int privacy_invoked; | |
f0706e82 | 830 | |
5b98b1f7 | 831 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
832 | return 0; |
833 | ||
f698d856 | 834 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
8318d78a | 835 | local->hw.conf.channel->center_freq, |
cffdd30d | 836 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
837 | if (!bss) |
838 | return 0; | |
839 | ||
5b98b1f7 | 840 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 841 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
5b98b1f7 | 842 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 843 | |
3e122be0 | 844 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 845 | |
5b98b1f7 JB |
846 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
847 | return 0; | |
848 | ||
849 | return 1; | |
f0706e82 JB |
850 | } |
851 | ||
f698d856 | 852 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
853 | struct ieee80211_if_sta *ifsta) |
854 | { | |
0795af57 JP |
855 | DECLARE_MAC_BUF(mac); |
856 | ||
f0706e82 JB |
857 | ifsta->assoc_tries++; |
858 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 859 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 860 | " timed out\n", |
f698d856 | 861 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
48c2fc59 | 862 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
863 | return; |
864 | } | |
865 | ||
48c2fc59 | 866 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
0795af57 | 867 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
f698d856 JBG |
868 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
869 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
f0706e82 | 870 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 871 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
48c2fc59 | 872 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
873 | return; |
874 | } | |
875 | ||
f698d856 | 876 | ieee80211_send_assoc(sdata, ifsta); |
f0706e82 JB |
877 | |
878 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
879 | } | |
880 | ||
881 | ||
f698d856 | 882 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
883 | struct ieee80211_if_sta *ifsta) |
884 | { | |
f698d856 | 885 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
886 | struct sta_info *sta; |
887 | int disassoc; | |
0795af57 | 888 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
889 | |
890 | /* TODO: start monitoring current AP signal quality and number of | |
891 | * missed beacons. Scan other channels every now and then and search | |
892 | * for better APs. */ | |
893 | /* TODO: remove expired BSSes */ | |
894 | ||
48c2fc59 | 895 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 896 | |
d0709a65 JB |
897 | rcu_read_lock(); |
898 | ||
f0706e82 JB |
899 | sta = sta_info_get(local, ifsta->bssid); |
900 | if (!sta) { | |
0795af57 | 901 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
f698d856 | 902 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
903 | disassoc = 1; |
904 | } else { | |
905 | disassoc = 0; | |
906 | if (time_after(jiffies, | |
907 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 908 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 909 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 910 | "current AP %s - assume out of " |
f0706e82 | 911 | "range\n", |
f698d856 | 912 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 913 | disassoc = 1; |
d6f2da5b | 914 | } else |
f698d856 | 915 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
916 | local->scan_ssid, |
917 | local->scan_ssid_len); | |
d6f2da5b | 918 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 919 | } else { |
d6f2da5b | 920 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
921 | if (time_after(jiffies, ifsta->last_probe + |
922 | IEEE80211_PROBE_INTERVAL)) { | |
923 | ifsta->last_probe = jiffies; | |
f698d856 | 924 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
925 | ifsta->ssid, |
926 | ifsta->ssid_len); | |
927 | } | |
928 | } | |
f0706e82 | 929 | } |
d0709a65 JB |
930 | |
931 | rcu_read_unlock(); | |
932 | ||
60f8b39c JB |
933 | if (disassoc) |
934 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
935 | WLAN_REASON_PREV_AUTH_NOT_VALID); | |
936 | else | |
937 | mod_timer(&ifsta->timer, jiffies + | |
938 | IEEE80211_MONITORING_INTERVAL); | |
f0706e82 JB |
939 | } |
940 | ||
941 | ||
f698d856 | 942 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
943 | struct ieee80211_if_sta *ifsta) |
944 | { | |
f698d856 | 945 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
d6f2da5b | 946 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f698d856 | 947 | ieee80211_associate(sdata, ifsta); |
f0706e82 JB |
948 | } |
949 | ||
950 | ||
f698d856 | 951 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
952 | struct ieee80211_if_sta *ifsta, |
953 | struct ieee80211_mgmt *mgmt, | |
954 | size_t len) | |
955 | { | |
956 | u8 *pos; | |
957 | struct ieee802_11_elems elems; | |
958 | ||
f0706e82 | 959 | pos = mgmt->u.auth.variable; |
67a4cce4 | 960 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 961 | if (!elems.challenge) |
f0706e82 | 962 | return; |
f698d856 | 963 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
f0706e82 JB |
964 | elems.challenge_len + 2, 1); |
965 | } | |
966 | ||
f698d856 | 967 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
968 | struct ieee80211_if_sta *ifsta, |
969 | struct ieee80211_mgmt *mgmt, | |
970 | size_t len) | |
971 | { | |
f0706e82 | 972 | u16 auth_alg, auth_transaction, status_code; |
0795af57 | 973 | DECLARE_MAC_BUF(mac); |
f0706e82 | 974 | |
48c2fc59 | 975 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
f4ea83dd | 976 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
f0706e82 | 977 | return; |
f0706e82 | 978 | |
f4ea83dd | 979 | if (len < 24 + 6) |
f0706e82 | 980 | return; |
f0706e82 | 981 | |
51fb61e7 | 982 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 983 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 984 | return; |
f0706e82 | 985 | |
51fb61e7 | 986 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 987 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 988 | return; |
f0706e82 JB |
989 | |
990 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
991 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
992 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
993 | ||
51fb61e7 | 994 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
995 | /* |
996 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
997 | * networks and most implementations do not seem to use it. |
998 | * However, try to reply to authentication attempts if someone | |
999 | * has actually implemented this. | |
135a2110 | 1000 | */ |
f4ea83dd | 1001 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
f0706e82 | 1002 | return; |
f698d856 | 1003 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
f0706e82 JB |
1004 | } |
1005 | ||
1006 | if (auth_alg != ifsta->auth_alg || | |
f4ea83dd | 1007 | auth_transaction != ifsta->auth_transaction) |
f0706e82 | 1008 | return; |
f0706e82 JB |
1009 | |
1010 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1011 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1012 | u8 algs[3]; | |
1013 | const int num_algs = ARRAY_SIZE(algs); | |
1014 | int i, pos; | |
1015 | algs[0] = algs[1] = algs[2] = 0xff; | |
1016 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1017 | algs[0] = WLAN_AUTH_OPEN; | |
1018 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1019 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1020 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1021 | algs[2] = WLAN_AUTH_LEAP; | |
1022 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1023 | pos = 0; | |
1024 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1025 | pos = 1; | |
1026 | else | |
1027 | pos = 2; | |
1028 | for (i = 0; i < num_algs; i++) { | |
1029 | pos++; | |
1030 | if (pos >= num_algs) | |
1031 | pos = 0; | |
1032 | if (algs[pos] == ifsta->auth_alg || | |
1033 | algs[pos] == 0xff) | |
1034 | continue; | |
1035 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1036 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 JB |
1037 | continue; |
1038 | ifsta->auth_alg = algs[pos]; | |
f0706e82 JB |
1039 | break; |
1040 | } | |
1041 | } | |
1042 | return; | |
1043 | } | |
1044 | ||
1045 | switch (ifsta->auth_alg) { | |
1046 | case WLAN_AUTH_OPEN: | |
1047 | case WLAN_AUTH_LEAP: | |
f698d856 | 1048 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 JB |
1049 | break; |
1050 | case WLAN_AUTH_SHARED_KEY: | |
1051 | if (ifsta->auth_transaction == 4) | |
f698d856 | 1052 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 | 1053 | else |
f698d856 | 1054 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
f0706e82 JB |
1055 | break; |
1056 | } | |
1057 | } | |
1058 | ||
1059 | ||
f698d856 | 1060 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1061 | struct ieee80211_if_sta *ifsta, |
1062 | struct ieee80211_mgmt *mgmt, | |
1063 | size_t len) | |
1064 | { | |
1065 | u16 reason_code; | |
0795af57 | 1066 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1067 | |
f4ea83dd | 1068 | if (len < 24 + 2) |
f0706e82 | 1069 | return; |
f0706e82 | 1070 | |
f4ea83dd | 1071 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1072 | return; |
f0706e82 JB |
1073 | |
1074 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1075 | ||
988c0f72 | 1076 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f698d856 | 1077 | printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name); |
f0706e82 | 1078 | |
48c2fc59 TW |
1079 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
1080 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1081 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
9859b81e | 1082 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 JB |
1083 | mod_timer(&ifsta->timer, jiffies + |
1084 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1085 | } | |
1086 | ||
aa458d17 | 1087 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
d6f2da5b | 1088 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1089 | } |
1090 | ||
1091 | ||
f698d856 | 1092 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1093 | struct ieee80211_if_sta *ifsta, |
1094 | struct ieee80211_mgmt *mgmt, | |
1095 | size_t len) | |
1096 | { | |
1097 | u16 reason_code; | |
0795af57 | 1098 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1099 | |
f4ea83dd | 1100 | if (len < 24 + 2) |
f0706e82 | 1101 | return; |
f0706e82 | 1102 | |
f4ea83dd | 1103 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1104 | return; |
f0706e82 JB |
1105 | |
1106 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1107 | ||
d6f2da5b | 1108 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f698d856 | 1109 | printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name); |
f0706e82 | 1110 | |
48c2fc59 TW |
1111 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
1112 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; | |
f0706e82 JB |
1113 | mod_timer(&ifsta->timer, jiffies + |
1114 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1115 | } | |
1116 | ||
aa458d17 | 1117 | ieee80211_set_disassoc(sdata, ifsta, false, false, 0); |
f0706e82 JB |
1118 | } |
1119 | ||
1120 | ||
471b3efd | 1121 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1122 | struct ieee80211_if_sta *ifsta, |
1123 | struct ieee80211_mgmt *mgmt, | |
1124 | size_t len, | |
1125 | int reassoc) | |
1126 | { | |
471b3efd | 1127 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1128 | struct ieee80211_supported_band *sband; |
f0706e82 | 1129 | struct sta_info *sta; |
8318d78a | 1130 | u64 rates, basic_rates; |
f0706e82 JB |
1131 | u16 capab_info, status_code, aid; |
1132 | struct ieee802_11_elems elems; | |
471b3efd | 1133 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1134 | u8 *pos; |
1135 | int i, j; | |
0795af57 | 1136 | DECLARE_MAC_BUF(mac); |
8318d78a | 1137 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1138 | |
1139 | /* AssocResp and ReassocResp have identical structure, so process both | |
1140 | * of them in this function. */ | |
1141 | ||
48c2fc59 | 1142 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1143 | return; |
f0706e82 | 1144 | |
f4ea83dd | 1145 | if (len < 24 + 6) |
f0706e82 | 1146 | return; |
f0706e82 | 1147 | |
f4ea83dd | 1148 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1149 | return; |
f0706e82 JB |
1150 | |
1151 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1152 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1153 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1154 | |
0795af57 | 1155 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1156 | "status=%d aid=%d)\n", |
f698d856 | 1157 | sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1158 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1159 | |
1160 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1161 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1162 | sdata->dev->name, status_code); |
8a69aa93 DD |
1163 | /* if this was a reassociation, ensure we try a "full" |
1164 | * association next time. This works around some broken APs | |
1165 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1166 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1167 | return; |
1168 | } | |
1169 | ||
1dd84aa2 JB |
1170 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1171 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1172 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1173 | aid &= ~(BIT(15) | BIT(14)); |
1174 | ||
f0706e82 | 1175 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1176 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1177 | |
1178 | if (!elems.supp_rates) { | |
1179 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1180 | sdata->dev->name); |
f0706e82 JB |
1181 | return; |
1182 | } | |
1183 | ||
f698d856 | 1184 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
f0706e82 JB |
1185 | ifsta->aid = aid; |
1186 | ifsta->ap_capab = capab_info; | |
1187 | ||
1188 | kfree(ifsta->assocresp_ies); | |
1189 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 1190 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
1191 | if (ifsta->assocresp_ies) |
1192 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
1193 | ||
d0709a65 JB |
1194 | rcu_read_lock(); |
1195 | ||
f0706e82 JB |
1196 | /* Add STA entry for the AP */ |
1197 | sta = sta_info_get(local, ifsta->bssid); | |
1198 | if (!sta) { | |
1199 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 1200 | int err; |
d0709a65 | 1201 | |
73651ee6 JB |
1202 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
1203 | if (!sta) { | |
1204 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1205 | " the AP\n", sdata->dev->name); |
d0709a65 | 1206 | rcu_read_unlock(); |
f0706e82 JB |
1207 | return; |
1208 | } | |
60f8b39c JB |
1209 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
1210 | local->hw.conf.channel->center_freq, | |
1211 | ifsta->ssid, ifsta->ssid_len); | |
1212 | if (bss) { | |
1213 | sta->last_signal = bss->signal; | |
1214 | sta->last_qual = bss->qual; | |
1215 | sta->last_noise = bss->noise; | |
1216 | ieee80211_rx_bss_put(local, bss); | |
1217 | } | |
f709fc69 | 1218 | |
60f8b39c JB |
1219 | err = sta_info_insert(sta); |
1220 | if (err) { | |
1221 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1222 | " the AP (error %d)\n", sdata->dev->name, err); | |
1223 | rcu_read_unlock(); | |
1224 | return; | |
f709fc69 | 1225 | } |
60f8b39c JB |
1226 | /* update new sta with its last rx activity */ |
1227 | sta->last_rx = jiffies; | |
f709fc69 | 1228 | } |
f709fc69 | 1229 | |
60f8b39c JB |
1230 | /* |
1231 | * FIXME: Do we really need to update the sta_info's information here? | |
1232 | * We already know about the AP (we found it in our list) so it | |
1233 | * should already be filled with the right info, no? | |
1234 | * As is stands, all this is racy because typically we assume | |
1235 | * the information that is filled in here (except flags) doesn't | |
1236 | * change while a STA structure is alive. As such, it should move | |
1237 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1238 | */ | |
f709fc69 | 1239 | |
60f8b39c JB |
1240 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
1241 | WLAN_STA_AUTHORIZED); | |
05e5e883 | 1242 | |
60f8b39c JB |
1243 | rates = 0; |
1244 | basic_rates = 0; | |
1245 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1246 | |
60f8b39c JB |
1247 | for (i = 0; i < elems.supp_rates_len; i++) { |
1248 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
f709fc69 | 1249 | |
60f8b39c JB |
1250 | if (rate > 110) |
1251 | have_higher_than_11mbit = true; | |
1252 | ||
1253 | for (j = 0; j < sband->n_bitrates; j++) { | |
1254 | if (sband->bitrates[j].bitrate == rate) | |
1255 | rates |= BIT(j); | |
1256 | if (elems.supp_rates[i] & 0x80) | |
1257 | basic_rates |= BIT(j); | |
f709fc69 | 1258 | } |
f709fc69 LCC |
1259 | } |
1260 | ||
60f8b39c JB |
1261 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1262 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
f0706e82 | 1263 | |
60f8b39c JB |
1264 | if (rate > 110) |
1265 | have_higher_than_11mbit = true; | |
f0706e82 | 1266 | |
60f8b39c JB |
1267 | for (j = 0; j < sband->n_bitrates; j++) { |
1268 | if (sband->bitrates[j].bitrate == rate) | |
1269 | rates |= BIT(j); | |
1270 | if (elems.ext_supp_rates[i] & 0x80) | |
1271 | basic_rates |= BIT(j); | |
1272 | } | |
1ebebea8 | 1273 | } |
f0706e82 | 1274 | |
60f8b39c JB |
1275 | sta->supp_rates[local->hw.conf.channel->band] = rates; |
1276 | sdata->basic_rates = basic_rates; | |
1277 | ||
1278 | /* cf. IEEE 802.11 9.2.12 */ | |
1279 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1280 | have_higher_than_11mbit) | |
1281 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1282 | else | |
1283 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1284 | |
60f8b39c JB |
1285 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
1286 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
1287 | struct ieee80211_ht_bss_info bss_info; | |
1288 | ieee80211_ht_cap_ie_to_ht_info( | |
1289 | (struct ieee80211_ht_cap *) | |
1290 | elems.ht_cap_elem, &sta->ht_info); | |
1291 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1292 | (struct ieee80211_ht_addt_info *) | |
1293 | elems.ht_info_elem, &bss_info); | |
1294 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); | |
1295 | } | |
f0706e82 | 1296 | |
60f8b39c | 1297 | rate_control_rate_init(sta, local); |
f0706e82 | 1298 | |
60f8b39c JB |
1299 | if (elems.wmm_param) { |
1300 | set_sta_flags(sta, WLAN_STA_WME); | |
1301 | rcu_read_unlock(); | |
1302 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, | |
1303 | elems.wmm_param_len); | |
1304 | } else | |
1305 | rcu_read_unlock(); | |
f0706e82 | 1306 | |
60f8b39c JB |
1307 | /* set AID and assoc capability, |
1308 | * ieee80211_set_associated() will tell the driver */ | |
1309 | bss_conf->aid = aid; | |
1310 | bss_conf->assoc_capability = capab_info; | |
1311 | ieee80211_set_associated(sdata, ifsta); | |
f0706e82 | 1312 | |
60f8b39c | 1313 | ieee80211_associated(sdata, ifsta); |
f0706e82 JB |
1314 | } |
1315 | ||
1316 | ||
f698d856 | 1317 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
a607268a BR |
1318 | struct ieee80211_if_sta *ifsta, |
1319 | struct ieee80211_sta_bss *bss) | |
1320 | { | |
f698d856 | 1321 | struct ieee80211_local *local = sdata->local; |
a607268a BR |
1322 | int res, rates, i, j; |
1323 | struct sk_buff *skb; | |
1324 | struct ieee80211_mgmt *mgmt; | |
a607268a | 1325 | u8 *pos; |
a607268a | 1326 | struct ieee80211_supported_band *sband; |
507b06d0 | 1327 | union iwreq_data wrqu; |
a607268a BR |
1328 | |
1329 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1330 | ||
1331 | /* Remove possible STA entries from other IBSS networks. */ | |
dc6676b7 | 1332 | sta_info_flush_delayed(sdata); |
a607268a BR |
1333 | |
1334 | if (local->ops->reset_tsf) { | |
1335 | /* Reset own TSF to allow time synchronization work. */ | |
1336 | local->ops->reset_tsf(local_to_hw(local)); | |
1337 | } | |
1338 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
9d139c81 | 1339 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
a607268a BR |
1340 | if (res) |
1341 | return res; | |
1342 | ||
1343 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
1344 | ||
a607268a BR |
1345 | sdata->drop_unencrypted = bss->capability & |
1346 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
1347 | ||
f698d856 | 1348 | res = ieee80211_set_freq(sdata, bss->freq); |
a607268a | 1349 | |
be038b37 AK |
1350 | if (res) |
1351 | return res; | |
a607268a | 1352 | |
9d139c81 | 1353 | /* Build IBSS probe response */ |
a607268a | 1354 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
9d139c81 | 1355 | if (skb) { |
a607268a BR |
1356 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1357 | ||
1358 | mgmt = (struct ieee80211_mgmt *) | |
1359 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
1360 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
e7827a70 HH |
1361 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
1362 | IEEE80211_STYPE_PROBE_RESP); | |
a607268a | 1363 | memset(mgmt->da, 0xff, ETH_ALEN); |
f698d856 | 1364 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
a607268a BR |
1365 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
1366 | mgmt->u.beacon.beacon_int = | |
1367 | cpu_to_le16(local->hw.conf.beacon_int); | |
4faeb860 | 1368 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
a607268a BR |
1369 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
1370 | ||
1371 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
1372 | *pos++ = WLAN_EID_SSID; | |
1373 | *pos++ = ifsta->ssid_len; | |
1374 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
1375 | ||
1376 | rates = bss->supp_rates_len; | |
1377 | if (rates > 8) | |
1378 | rates = 8; | |
1379 | pos = skb_put(skb, 2 + rates); | |
1380 | *pos++ = WLAN_EID_SUPP_RATES; | |
1381 | *pos++ = rates; | |
1382 | memcpy(pos, bss->supp_rates, rates); | |
1383 | ||
1384 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
1385 | pos = skb_put(skb, 2 + 1); | |
1386 | *pos++ = WLAN_EID_DS_PARAMS; | |
1387 | *pos++ = 1; | |
1388 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
1389 | } | |
1390 | ||
1391 | pos = skb_put(skb, 2 + 2); | |
1392 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
1393 | *pos++ = 2; | |
1394 | /* FIX: set ATIM window based on scan results */ | |
1395 | *pos++ = 0; | |
1396 | *pos++ = 0; | |
1397 | ||
1398 | if (bss->supp_rates_len > 8) { | |
1399 | rates = bss->supp_rates_len - 8; | |
1400 | pos = skb_put(skb, 2 + rates); | |
1401 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1402 | *pos++ = rates; | |
1403 | memcpy(pos, &bss->supp_rates[8], rates); | |
1404 | } | |
1405 | ||
9d139c81 | 1406 | ifsta->probe_resp = skb; |
e039fa4a | 1407 | |
9d139c81 JB |
1408 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
1409 | } | |
a607268a | 1410 | |
9d139c81 JB |
1411 | rates = 0; |
1412 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1413 | for (i = 0; i < bss->supp_rates_len; i++) { | |
1414 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
1415 | for (j = 0; j < sband->n_bitrates; j++) | |
1416 | if (sband->bitrates[j].bitrate == bitrate) | |
1417 | rates |= BIT(j); | |
a607268a | 1418 | } |
9d139c81 JB |
1419 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
1420 | ||
b079ada7 | 1421 | ieee80211_sta_def_wmm_params(sdata, bss); |
a607268a | 1422 | |
48c2fc59 | 1423 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
a607268a BR |
1424 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
1425 | ||
507b06d0 DW |
1426 | memset(&wrqu, 0, sizeof(wrqu)); |
1427 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
f698d856 | 1428 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
a607268a BR |
1429 | |
1430 | return res; | |
1431 | } | |
1432 | ||
f709fc69 LCC |
1433 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
1434 | struct ieee802_11_elems *elems, | |
1435 | enum ieee80211_band band) | |
1436 | { | |
1437 | struct ieee80211_supported_band *sband; | |
1438 | struct ieee80211_rate *bitrates; | |
1439 | size_t num_rates; | |
1440 | u64 supp_rates; | |
1441 | int i, j; | |
1442 | sband = local->hw.wiphy->bands[band]; | |
1443 | ||
1444 | if (!sband) { | |
1445 | WARN_ON(1); | |
1446 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1447 | } | |
1448 | ||
1449 | bitrates = sband->bitrates; | |
1450 | num_rates = sband->n_bitrates; | |
1451 | supp_rates = 0; | |
1452 | for (i = 0; i < elems->supp_rates_len + | |
1453 | elems->ext_supp_rates_len; i++) { | |
1454 | u8 rate = 0; | |
1455 | int own_rate; | |
1456 | if (i < elems->supp_rates_len) | |
1457 | rate = elems->supp_rates[i]; | |
1458 | else if (elems->ext_supp_rates) | |
1459 | rate = elems->ext_supp_rates | |
1460 | [i - elems->supp_rates_len]; | |
1461 | own_rate = 5 * (rate & 0x7f); | |
1462 | for (j = 0; j < num_rates; j++) | |
1463 | if (bitrates[j].bitrate == own_rate) | |
1464 | supp_rates |= BIT(j); | |
1465 | } | |
1466 | return supp_rates; | |
1467 | } | |
1468 | ||
8e1535d5 EG |
1469 | static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local, |
1470 | enum ieee80211_band band) | |
1471 | { | |
1472 | struct ieee80211_supported_band *sband; | |
1473 | struct ieee80211_rate *bitrates; | |
1474 | u64 mandatory_rates; | |
1475 | enum ieee80211_rate_flags mandatory_flag; | |
1476 | int i; | |
1477 | ||
1478 | sband = local->hw.wiphy->bands[band]; | |
1479 | if (!sband) { | |
1480 | WARN_ON(1); | |
1481 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1482 | } | |
1483 | ||
1484 | if (band == IEEE80211_BAND_2GHZ) | |
1485 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
1486 | else | |
1487 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
1488 | ||
1489 | bitrates = sband->bitrates; | |
1490 | mandatory_rates = 0; | |
1491 | for (i = 0; i < sband->n_bitrates; i++) | |
1492 | if (bitrates[i].flags & mandatory_flag) | |
1493 | mandatory_rates |= BIT(i); | |
1494 | return mandatory_rates; | |
1495 | } | |
a607268a | 1496 | |
98c8fccf JB |
1497 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1498 | struct ieee80211_mgmt *mgmt, | |
1499 | size_t len, | |
1500 | struct ieee80211_rx_status *rx_status, | |
1501 | struct ieee802_11_elems *elems, | |
1502 | bool beacon) | |
1503 | { | |
1504 | struct ieee80211_local *local = sdata->local; | |
1505 | int freq; | |
1506 | struct ieee80211_sta_bss *bss; | |
1507 | struct sta_info *sta; | |
1508 | struct ieee80211_channel *channel; | |
1509 | u64 beacon_timestamp, rx_timestamp; | |
1510 | u64 supp_rates = 0; | |
1511 | enum ieee80211_band band = rx_status->band; | |
1512 | DECLARE_MAC_BUF(mac); | |
1513 | DECLARE_MAC_BUF(mac2); | |
1514 | ||
1515 | if (elems->ds_params && elems->ds_params_len == 1) | |
1516 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1517 | else | |
1518 | freq = rx_status->freq; | |
1519 | ||
1520 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1521 | ||
1522 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1523 | return; | |
1524 | ||
1525 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && | |
1526 | elems->mesh_config && mesh_matches_local(elems, sdata)) { | |
1527 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1528 | ||
1529 | mesh_neighbour_update(mgmt->sa, supp_rates, sdata, | |
1530 | mesh_peer_accepts_plinks(elems)); | |
1531 | } | |
1532 | ||
1533 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && | |
1534 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { | |
1535 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1536 | ||
1537 | rcu_read_lock(); | |
1538 | ||
1539 | sta = sta_info_get(local, mgmt->sa); | |
1540 | if (sta) { | |
1541 | u64 prev_rates; | |
1542 | ||
1543 | prev_rates = sta->supp_rates[band]; | |
1544 | /* make sure mandatory rates are always added */ | |
1545 | sta->supp_rates[band] = supp_rates | | |
1546 | ieee80211_sta_get_mandatory_rates(local, band); | |
1547 | ||
1548 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1549 | if (sta->supp_rates[band] != prev_rates) | |
1550 | printk(KERN_DEBUG "%s: updated supp_rates set " | |
1551 | "for %s based on beacon info (0x%llx | " | |
1552 | "0x%llx -> 0x%llx)\n", | |
1553 | sdata->dev->name, print_mac(mac, sta->addr), | |
1554 | (unsigned long long) prev_rates, | |
1555 | (unsigned long long) supp_rates, | |
1556 | (unsigned long long) sta->supp_rates[band]); | |
1557 | #endif | |
1558 | } else { | |
1559 | ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid, | |
1560 | mgmt->sa, supp_rates); | |
1561 | } | |
1562 | ||
1563 | rcu_read_unlock(); | |
1564 | } | |
1565 | ||
1566 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, | |
1567 | freq, beacon); | |
1568 | if (!bss) | |
1569 | return; | |
1570 | ||
1571 | /* was just updated in ieee80211_bss_info_update */ | |
1572 | beacon_timestamp = bss->timestamp; | |
1573 | ||
30b89b0f JB |
1574 | /* |
1575 | * In STA mode, the remaining parameters should not be overridden | |
1576 | * by beacons because they're not necessarily accurate there. | |
1577 | */ | |
1578 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
9859b81e | 1579 | bss->last_probe_resp && beacon) { |
3e122be0 | 1580 | ieee80211_rx_bss_put(local, bss); |
30b89b0f JB |
1581 | return; |
1582 | } | |
1583 | ||
9d9bf77d BR |
1584 | /* check if we need to merge IBSS */ |
1585 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
fba4a1e6 | 1586 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d | 1587 | bss->freq == local->oper_channel->center_freq && |
ae6a44e3 EK |
1588 | elems->ssid_len == sdata->u.sta.ssid_len && |
1589 | memcmp(elems->ssid, sdata->u.sta.ssid, | |
1590 | sdata->u.sta.ssid_len) == 0) { | |
9d9bf77d BR |
1591 | if (rx_status->flag & RX_FLAG_TSFT) { |
1592 | /* in order for correct IBSS merging we need mactime | |
1593 | * | |
1594 | * since mactime is defined as the time the first data | |
1595 | * symbol of the frame hits the PHY, and the timestamp | |
1596 | * of the beacon is defined as "the time that the data | |
1597 | * symbol containing the first bit of the timestamp is | |
1598 | * transmitted to the PHY plus the transmitting STA’s | |
1599 | * delays through its local PHY from the MAC-PHY | |
1600 | * interface to its interface with the WM" | |
1601 | * (802.11 11.1.2) - equals the time this bit arrives at | |
1602 | * the receiver - we have to take into account the | |
1603 | * offset between the two. | |
1604 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
1605 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
1606 | */ | |
8e1535d5 | 1607 | int rate = local->hw.wiphy->bands[band]-> |
9d9bf77d BR |
1608 | bitrates[rx_status->rate_idx].bitrate; |
1609 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
1610 | } else if (local && local->ops && local->ops->get_tsf) | |
1611 | /* second best option: get current TSF */ | |
1612 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
1613 | else | |
1614 | /* can't merge without knowing the TSF */ | |
1615 | rx_timestamp = -1LLU; | |
1616 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1617 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
1618 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
1619 | print_mac(mac, mgmt->sa), | |
1620 | print_mac(mac2, mgmt->bssid), | |
1621 | (unsigned long long)rx_timestamp, | |
1622 | (unsigned long long)beacon_timestamp, | |
1623 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
1624 | jiffies); | |
1625 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
1626 | if (beacon_timestamp > rx_timestamp) { | |
576fdeae | 1627 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
f4ea83dd JB |
1628 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
1629 | "local TSF - IBSS merge with BSSID %s\n", | |
f698d856 | 1630 | sdata->dev->name, print_mac(mac, mgmt->bssid)); |
fba4a1e6 | 1631 | #endif |
f698d856 JBG |
1632 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
1633 | ieee80211_ibss_add_sta(sdata, NULL, | |
87291c02 | 1634 | mgmt->bssid, mgmt->sa, |
8e1535d5 | 1635 | supp_rates); |
9d9bf77d BR |
1636 | } |
1637 | } | |
1638 | ||
3e122be0 | 1639 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
1640 | } |
1641 | ||
1642 | ||
f698d856 | 1643 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1644 | struct ieee80211_mgmt *mgmt, |
1645 | size_t len, | |
1646 | struct ieee80211_rx_status *rx_status) | |
1647 | { | |
ae6a44e3 EK |
1648 | size_t baselen; |
1649 | struct ieee802_11_elems elems; | |
9859b81e | 1650 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
ae6a44e3 | 1651 | |
8e7cdbb6 TW |
1652 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
1653 | return; /* ignore ProbeResp to foreign address */ | |
1654 | ||
ae6a44e3 EK |
1655 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1656 | if (baselen > len) | |
1657 | return; | |
1658 | ||
1659 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1660 | &elems); | |
1661 | ||
98c8fccf | 1662 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
1663 | |
1664 | /* direct probe may be part of the association flow */ | |
1665 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, | |
1666 | &ifsta->request)) { | |
1667 | printk(KERN_DEBUG "%s direct probe responded\n", | |
1668 | sdata->dev->name); | |
1669 | ieee80211_authenticate(sdata, ifsta); | |
1670 | } | |
f0706e82 JB |
1671 | } |
1672 | ||
1673 | ||
f698d856 | 1674 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1675 | struct ieee80211_mgmt *mgmt, |
1676 | size_t len, | |
1677 | struct ieee80211_rx_status *rx_status) | |
1678 | { | |
f0706e82 | 1679 | struct ieee80211_if_sta *ifsta; |
f0706e82 JB |
1680 | size_t baselen; |
1681 | struct ieee802_11_elems elems; | |
f698d856 | 1682 | struct ieee80211_local *local = sdata->local; |
d3c990fb | 1683 | struct ieee80211_conf *conf = &local->hw.conf; |
471b3efd | 1684 | u32 changed = 0; |
f0706e82 | 1685 | |
ae6a44e3 EK |
1686 | /* Process beacon from the current BSS */ |
1687 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1688 | if (baselen > len) | |
1689 | return; | |
1690 | ||
1691 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
1692 | ||
98c8fccf | 1693 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
f0706e82 | 1694 | |
51fb61e7 | 1695 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
1696 | return; |
1697 | ifsta = &sdata->u.sta; | |
1698 | ||
d6f2da5b | 1699 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
1700 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
1701 | return; | |
1702 | ||
fe3fa827 JB |
1703 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
1704 | elems.wmm_param_len); | |
1705 | ||
5628221c | 1706 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 1707 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
1708 | else { |
1709 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
1710 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
1711 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
1712 | } | |
f0706e82 | 1713 | |
d3c990fb | 1714 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 1715 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
1716 | struct ieee80211_ht_bss_info bss_info; |
1717 | ||
1718 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1719 | (struct ieee80211_ht_addt_info *) | |
1720 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
1721 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
1722 | &bss_info); | |
d3c990fb RR |
1723 | } |
1724 | ||
471b3efd | 1725 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
1726 | } |
1727 | ||
1728 | ||
f698d856 | 1729 | static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1730 | struct ieee80211_if_sta *ifsta, |
1731 | struct ieee80211_mgmt *mgmt, | |
1732 | size_t len, | |
1733 | struct ieee80211_rx_status *rx_status) | |
1734 | { | |
f698d856 | 1735 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1736 | int tx_last_beacon; |
1737 | struct sk_buff *skb; | |
1738 | struct ieee80211_mgmt *resp; | |
1739 | u8 *pos, *end; | |
0795af57 JP |
1740 | DECLARE_MAC_BUF(mac); |
1741 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1742 | DECLARE_MAC_BUF(mac2); | |
1743 | DECLARE_MAC_BUF(mac3); | |
1744 | #endif | |
f0706e82 | 1745 | |
51fb61e7 | 1746 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
48c2fc59 | 1747 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
f0706e82 JB |
1748 | len < 24 + 2 || !ifsta->probe_resp) |
1749 | return; | |
1750 | ||
1751 | if (local->ops->tx_last_beacon) | |
1752 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
1753 | else | |
1754 | tx_last_beacon = 1; | |
1755 | ||
1756 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
1757 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
1758 | "%s (tx_last_beacon=%d)\n", | |
f698d856 | 1759 | sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), |
0795af57 | 1760 | print_mac(mac3, mgmt->bssid), tx_last_beacon); |
f0706e82 JB |
1761 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
1762 | ||
1763 | if (!tx_last_beacon) | |
1764 | return; | |
1765 | ||
1766 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
1767 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
1768 | return; | |
1769 | ||
1770 | end = ((u8 *) mgmt) + len; | |
1771 | pos = mgmt->u.probe_req.variable; | |
1772 | if (pos[0] != WLAN_EID_SSID || | |
1773 | pos + 2 + pos[1] > end) { | |
f4ea83dd JB |
1774 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
1775 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
1776 | "from %s\n", | |
f698d856 | 1777 | sdata->dev->name, print_mac(mac, mgmt->sa)); |
f4ea83dd | 1778 | #endif |
f0706e82 JB |
1779 | return; |
1780 | } | |
1781 | if (pos[1] != 0 && | |
1782 | (pos[1] != ifsta->ssid_len || | |
1783 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
1784 | /* Ignore ProbeReq for foreign SSID */ | |
1785 | return; | |
1786 | } | |
1787 | ||
1788 | /* Reply with ProbeResp */ | |
0ec0b7ac | 1789 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
1790 | if (!skb) |
1791 | return; | |
1792 | ||
1793 | resp = (struct ieee80211_mgmt *) skb->data; | |
1794 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
1795 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 | 1796 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
f698d856 | 1797 | sdata->dev->name, print_mac(mac, resp->da)); |
f0706e82 | 1798 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
f698d856 | 1799 | ieee80211_sta_tx(sdata, skb, 0); |
f0706e82 JB |
1800 | } |
1801 | ||
f698d856 | 1802 | static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, |
4e20cb29 JB |
1803 | struct ieee80211_if_sta *ifsta, |
1804 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
1805 | size_t len, |
1806 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 1807 | { |
39192c0b JB |
1808 | /* currently we only handle mesh interface action frames here */ |
1809 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
9f985b0e RR |
1810 | return; |
1811 | ||
1812 | switch (mgmt->u.action.category) { | |
f709fc69 | 1813 | case PLINK_CATEGORY: |
39192c0b | 1814 | mesh_rx_plink_frame(sdata, mgmt, len, rx_status); |
f709fc69 | 1815 | break; |
f709fc69 | 1816 | case MESH_PATH_SEL_CATEGORY: |
39192c0b | 1817 | mesh_rx_path_sel_frame(sdata, mgmt, len); |
f709fc69 | 1818 | break; |
9f985b0e RR |
1819 | } |
1820 | } | |
f0706e82 | 1821 | |
f698d856 | 1822 | void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
f0706e82 JB |
1823 | struct ieee80211_rx_status *rx_status) |
1824 | { | |
f698d856 | 1825 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1826 | struct ieee80211_if_sta *ifsta; |
1827 | struct ieee80211_mgmt *mgmt; | |
1828 | u16 fc; | |
1829 | ||
1830 | if (skb->len < 24) | |
1831 | goto fail; | |
1832 | ||
f0706e82 JB |
1833 | ifsta = &sdata->u.sta; |
1834 | ||
1835 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1836 | fc = le16_to_cpu(mgmt->frame_control); | |
1837 | ||
1838 | switch (fc & IEEE80211_FCTL_STYPE) { | |
1839 | case IEEE80211_STYPE_PROBE_REQ: | |
1840 | case IEEE80211_STYPE_PROBE_RESP: | |
1841 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 1842 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
1843 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
1844 | case IEEE80211_STYPE_AUTH: | |
1845 | case IEEE80211_STYPE_ASSOC_RESP: | |
1846 | case IEEE80211_STYPE_REASSOC_RESP: | |
1847 | case IEEE80211_STYPE_DEAUTH: | |
1848 | case IEEE80211_STYPE_DISASSOC: | |
1849 | skb_queue_tail(&ifsta->skb_queue, skb); | |
1850 | queue_work(local->hw.workqueue, &ifsta->work); | |
1851 | return; | |
f0706e82 JB |
1852 | } |
1853 | ||
1854 | fail: | |
1855 | kfree_skb(skb); | |
1856 | } | |
1857 | ||
f698d856 | 1858 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1859 | struct sk_buff *skb) |
1860 | { | |
1861 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
1862 | struct ieee80211_if_sta *ifsta; |
1863 | struct ieee80211_mgmt *mgmt; | |
1864 | u16 fc; | |
1865 | ||
f0706e82 JB |
1866 | ifsta = &sdata->u.sta; |
1867 | ||
1868 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
1869 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1870 | fc = le16_to_cpu(mgmt->frame_control); | |
1871 | ||
1872 | switch (fc & IEEE80211_FCTL_STYPE) { | |
1873 | case IEEE80211_STYPE_PROBE_REQ: | |
f698d856 | 1874 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, |
f0706e82 JB |
1875 | rx_status); |
1876 | break; | |
1877 | case IEEE80211_STYPE_PROBE_RESP: | |
f698d856 | 1878 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
1879 | break; |
1880 | case IEEE80211_STYPE_BEACON: | |
f698d856 | 1881 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
1882 | break; |
1883 | case IEEE80211_STYPE_AUTH: | |
f698d856 | 1884 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
1885 | break; |
1886 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 1887 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
1888 | break; |
1889 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 1890 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
1891 | break; |
1892 | case IEEE80211_STYPE_DEAUTH: | |
f698d856 | 1893 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
1894 | break; |
1895 | case IEEE80211_STYPE_DISASSOC: | |
f698d856 | 1896 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
f0706e82 | 1897 | break; |
9f985b0e | 1898 | case IEEE80211_STYPE_ACTION: |
f698d856 | 1899 | ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 1900 | break; |
f0706e82 JB |
1901 | } |
1902 | ||
1903 | kfree_skb(skb); | |
1904 | } | |
1905 | ||
1906 | ||
f698d856 | 1907 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1908 | { |
f698d856 | 1909 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1910 | int active = 0; |
1911 | struct sta_info *sta; | |
1912 | ||
d0709a65 JB |
1913 | rcu_read_lock(); |
1914 | ||
1915 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1916 | if (sta->sdata == sdata && | |
f0706e82 JB |
1917 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
1918 | jiffies)) { | |
1919 | active++; | |
1920 | break; | |
1921 | } | |
1922 | } | |
d0709a65 JB |
1923 | |
1924 | rcu_read_unlock(); | |
f0706e82 JB |
1925 | |
1926 | return active; | |
1927 | } | |
1928 | ||
1929 | ||
f698d856 | 1930 | static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time) |
f0706e82 | 1931 | { |
f698d856 | 1932 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1933 | struct sta_info *sta, *tmp; |
be8755e1 | 1934 | LIST_HEAD(tmp_list); |
0795af57 | 1935 | DECLARE_MAC_BUF(mac); |
d0709a65 | 1936 | unsigned long flags; |
f0706e82 | 1937 | |
d0709a65 | 1938 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 1939 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 1940 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
f4ea83dd | 1941 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
0795af57 | 1942 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
f698d856 | 1943 | sdata->dev->name, print_mac(mac, sta->addr)); |
f4ea83dd | 1944 | #endif |
cb585bcc | 1945 | __sta_info_unlink(&sta); |
d0709a65 JB |
1946 | if (sta) |
1947 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 1948 | } |
d0709a65 | 1949 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 1950 | |
d0709a65 JB |
1951 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
1952 | sta_info_destroy(sta); | |
f0706e82 JB |
1953 | } |
1954 | ||
1955 | ||
f698d856 | 1956 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1957 | struct ieee80211_if_sta *ifsta) |
1958 | { | |
1959 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
1960 | ||
f698d856 JBG |
1961 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
1962 | if (ieee80211_sta_active_ibss(sdata)) | |
f0706e82 JB |
1963 | return; |
1964 | ||
1965 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
f698d856 JBG |
1966 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
1967 | ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
1968 | } |
1969 | ||
1970 | ||
f709fc69 | 1971 | #ifdef CONFIG_MAC80211_MESH |
f698d856 | 1972 | static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, |
f709fc69 LCC |
1973 | struct ieee80211_if_sta *ifsta) |
1974 | { | |
f709fc69 LCC |
1975 | bool free_plinks; |
1976 | ||
f698d856 JBG |
1977 | ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); |
1978 | mesh_path_expire(sdata); | |
f709fc69 LCC |
1979 | |
1980 | free_plinks = mesh_plink_availables(sdata); | |
1981 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
9d139c81 | 1982 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
1983 | |
1984 | mod_timer(&ifsta->timer, jiffies + | |
1985 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
1986 | } | |
1987 | ||
1988 | ||
f698d856 | 1989 | void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) |
f709fc69 LCC |
1990 | { |
1991 | struct ieee80211_if_sta *ifsta; | |
f709fc69 | 1992 | ifsta = &sdata->u.sta; |
48c2fc59 | 1993 | ifsta->state = IEEE80211_STA_MLME_MESH_UP; |
f709fc69 | 1994 | ieee80211_sta_timer((unsigned long)sdata); |
56a6d13d | 1995 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
1996 | } |
1997 | #endif | |
1998 | ||
1999 | ||
f0706e82 JB |
2000 | void ieee80211_sta_timer(unsigned long data) |
2001 | { | |
60f8b39c JB |
2002 | struct ieee80211_sub_if_data *sdata = |
2003 | (struct ieee80211_sub_if_data *) data; | |
2004 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
2005 | struct ieee80211_local *local = sdata->local; | |
f0706e82 | 2006 | |
60f8b39c JB |
2007 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
2008 | queue_work(local->hw.workqueue, &ifsta->work); | |
f0706e82 JB |
2009 | } |
2010 | ||
f698d856 | 2011 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2012 | struct ieee80211_if_sta *ifsta) |
2013 | { | |
f698d856 | 2014 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2015 | |
2016 | if (local->ops->reset_tsf) { | |
2017 | /* Reset own TSF to allow time synchronization work. */ | |
2018 | local->ops->reset_tsf(local_to_hw(local)); | |
2019 | } | |
2020 | ||
2021 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
2022 | ||
2023 | ||
2024 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
2025 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2026 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2027 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2028 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2029 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
2030 | else | |
2031 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
f0706e82 | 2032 | ifsta->auth_transaction = -1; |
d6f2da5b | 2033 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
6042a3e3 | 2034 | ifsta->assoc_scan_tries = 0; |
9859b81e | 2035 | ifsta->direct_probe_tries = 0; |
6042a3e3 RR |
2036 | ifsta->auth_tries = 0; |
2037 | ifsta->assoc_tries = 0; | |
24e64622 | 2038 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 2039 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
2040 | } |
2041 | ||
2042 | ||
f698d856 | 2043 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2044 | struct ieee80211_if_sta *ifsta) |
2045 | { | |
f698d856 | 2046 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2047 | |
51fb61e7 | 2048 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2049 | return; |
2050 | ||
d6f2da5b | 2051 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3b7ee69d | 2052 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
d6f2da5b | 2053 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
3b7ee69d TW |
2054 | IEEE80211_STA_AUTO_SSID_SEL))) { |
2055 | ||
2056 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) | |
2057 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
2058 | WLAN_REASON_DEAUTH_LEAVING); | |
2059 | ||
f0706e82 JB |
2060 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
2061 | queue_work(local->hw.workqueue, &ifsta->work); | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
2066 | const char *ssid, int ssid_len) | |
2067 | { | |
2068 | int tmp, hidden_ssid; | |
2069 | ||
48225709 MW |
2070 | if (ssid_len == ifsta->ssid_len && |
2071 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
2072 | return 1; |
2073 | ||
d6f2da5b | 2074 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
2075 | return 0; |
2076 | ||
2077 | hidden_ssid = 1; | |
2078 | tmp = ssid_len; | |
2079 | while (tmp--) { | |
2080 | if (ssid[tmp] != '\0') { | |
2081 | hidden_ssid = 0; | |
2082 | break; | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
2087 | return 1; | |
2088 | ||
2089 | if (ssid_len == 1 && ssid[0] == ' ') | |
2090 | return 1; | |
2091 | ||
2092 | return 0; | |
2093 | } | |
2094 | ||
f698d856 | 2095 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2096 | struct ieee80211_if_sta *ifsta) |
2097 | { | |
f698d856 | 2098 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2099 | struct ieee80211_sta_bss *bss; |
8318d78a | 2100 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
2101 | u8 bssid[ETH_ALEN], *pos; |
2102 | int i; | |
167ad6f7 | 2103 | int ret; |
0795af57 | 2104 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
2105 | |
2106 | #if 0 | |
2107 | /* Easier testing, use fixed BSSID. */ | |
2108 | memset(bssid, 0xfe, ETH_ALEN); | |
2109 | #else | |
2110 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
2111 | * own MAC address to make sure that devices that do not have proper | |
2112 | * random number generator get different BSSID. */ | |
2113 | get_random_bytes(bssid, ETH_ALEN); | |
2114 | for (i = 0; i < ETH_ALEN; i++) | |
f698d856 | 2115 | bssid[i] ^= sdata->dev->dev_addr[i]; |
f0706e82 JB |
2116 | bssid[0] &= ~0x01; |
2117 | bssid[0] |= 0x02; | |
2118 | #endif | |
2119 | ||
0795af57 | 2120 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
f698d856 | 2121 | sdata->dev->name, print_mac(mac, bssid)); |
f0706e82 | 2122 | |
98c8fccf | 2123 | bss = ieee80211_rx_bss_add(local, bssid, |
8318d78a | 2124 | local->hw.conf.channel->center_freq, |
cffdd30d | 2125 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
2126 | if (!bss) |
2127 | return -ENOMEM; | |
2128 | ||
8318d78a JB |
2129 | bss->band = local->hw.conf.channel->band; |
2130 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
2131 | |
2132 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 2133 | local->hw.conf.beacon_int = 100; |
f0706e82 | 2134 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
2135 | bss->last_update = jiffies; |
2136 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
2137 | |
2138 | if (sdata->default_key) | |
f0706e82 | 2139 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 2140 | else |
f0706e82 | 2141 | sdata->drop_unencrypted = 0; |
988c0f72 | 2142 | |
8318d78a | 2143 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 2144 | pos = bss->supp_rates; |
8318d78a JB |
2145 | for (i = 0; i < sband->n_bitrates; i++) { |
2146 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
2147 | *pos++ = (u8) (rate / 5); |
2148 | } | |
2149 | ||
f698d856 | 2150 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
3e122be0 | 2151 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2152 | return ret; |
f0706e82 JB |
2153 | } |
2154 | ||
2155 | ||
f698d856 | 2156 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2157 | struct ieee80211_if_sta *ifsta) |
2158 | { | |
f698d856 | 2159 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2160 | struct ieee80211_sta_bss *bss; |
2161 | int found = 0; | |
2162 | u8 bssid[ETH_ALEN]; | |
2163 | int active_ibss; | |
0795af57 JP |
2164 | DECLARE_MAC_BUF(mac); |
2165 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2166 | |
2167 | if (ifsta->ssid_len == 0) | |
2168 | return -EINVAL; | |
2169 | ||
f698d856 | 2170 | active_ibss = ieee80211_sta_active_ibss(sdata); |
f0706e82 JB |
2171 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2172 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
f698d856 | 2173 | sdata->dev->name, active_ibss); |
f0706e82 JB |
2174 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2175 | spin_lock_bh(&local->sta_bss_lock); | |
2176 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2177 | if (ifsta->ssid_len != bss->ssid_len || | |
2178 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
2179 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
2180 | continue; | |
2181 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2182 | printk(KERN_DEBUG " bssid=%s found\n", |
2183 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
2184 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2185 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
2186 | found = 1; | |
2187 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
2188 | break; | |
2189 | } | |
2190 | spin_unlock_bh(&local->sta_bss_lock); | |
2191 | ||
2192 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
6e43829b VK |
2193 | if (found) |
2194 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " | |
2195 | "%s\n", print_mac(mac, bssid), | |
2196 | print_mac(mac2, ifsta->bssid)); | |
f0706e82 | 2197 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
80693ceb DD |
2198 | |
2199 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
167ad6f7 | 2200 | int ret; |
80693ceb DD |
2201 | int search_freq; |
2202 | ||
2203 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) | |
2204 | search_freq = bss->freq; | |
2205 | else | |
2206 | search_freq = local->hw.conf.channel->center_freq; | |
2207 | ||
f698d856 | 2208 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
80693ceb DD |
2209 | ifsta->ssid, ifsta->ssid_len); |
2210 | if (!bss) | |
2211 | goto dont_join; | |
2212 | ||
0795af57 | 2213 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 2214 | " based on configured SSID\n", |
f698d856 JBG |
2215 | sdata->dev->name, print_mac(mac, bssid)); |
2216 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); | |
3e122be0 | 2217 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2218 | return ret; |
f0706e82 | 2219 | } |
80693ceb DD |
2220 | |
2221 | dont_join: | |
f0706e82 JB |
2222 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2223 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
2224 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2225 | ||
2226 | /* Selected IBSS not found in current scan results - try to scan */ | |
48c2fc59 | 2227 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
f698d856 | 2228 | !ieee80211_sta_active_ibss(sdata)) { |
f0706e82 JB |
2229 | mod_timer(&ifsta->timer, jiffies + |
2230 | IEEE80211_IBSS_MERGE_INTERVAL); | |
2231 | } else if (time_after(jiffies, local->last_scan_completed + | |
2232 | IEEE80211_SCAN_INTERVAL)) { | |
2233 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
f698d856 JBG |
2234 | "join\n", sdata->dev->name); |
2235 | return ieee80211_sta_req_scan(sdata, ifsta->ssid, | |
f0706e82 | 2236 | ifsta->ssid_len); |
48c2fc59 | 2237 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
f0706e82 JB |
2238 | int interval = IEEE80211_SCAN_INTERVAL; |
2239 | ||
2240 | if (time_after(jiffies, ifsta->ibss_join_req + | |
2241 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 2242 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
2243 | (!(local->oper_channel->flags & |
2244 | IEEE80211_CHAN_NO_IBSS))) | |
f698d856 | 2245 | return ieee80211_sta_create_ibss(sdata, ifsta); |
d6f2da5b | 2246 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a | 2247 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
f698d856 | 2248 | " %d MHz\n", sdata->dev->name, |
8318d78a | 2249 | local->hw.conf.channel->center_freq); |
f0706e82 JB |
2250 | } |
2251 | ||
2252 | /* No IBSS found - decrease scan interval and continue | |
2253 | * scanning. */ | |
2254 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
2255 | } | |
2256 | ||
48c2fc59 | 2257 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f0706e82 JB |
2258 | mod_timer(&ifsta->timer, jiffies + interval); |
2259 | return 0; | |
2260 | } | |
2261 | ||
2262 | return 0; | |
2263 | } | |
2264 | ||
2265 | ||
f698d856 | 2266 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
f0706e82 | 2267 | { |
f0706e82 | 2268 | struct ieee80211_if_sta *ifsta; |
9d139c81 | 2269 | int res; |
f0706e82 JB |
2270 | |
2271 | if (len > IEEE80211_MAX_SSID_LEN) | |
2272 | return -EINVAL; | |
2273 | ||
f0706e82 JB |
2274 | ifsta = &sdata->u.sta; |
2275 | ||
9d139c81 JB |
2276 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
2277 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); | |
2278 | memcpy(ifsta->ssid, ssid, len); | |
2279 | ifsta->ssid_len = len; | |
d6f2da5b | 2280 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
9d139c81 JB |
2281 | |
2282 | res = 0; | |
2283 | /* | |
2284 | * Hack! MLME code needs to be cleaned up to have different | |
2285 | * entry points for configuration and internal selection change | |
2286 | */ | |
2287 | if (netif_running(sdata->dev)) | |
2288 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); | |
2289 | if (res) { | |
2290 | printk(KERN_DEBUG "%s: Failed to config new SSID to " | |
f698d856 | 2291 | "the low-level driver\n", sdata->dev->name); |
9d139c81 JB |
2292 | return res; |
2293 | } | |
2294 | } | |
f0706e82 | 2295 | |
d6f2da5b JS |
2296 | if (len) |
2297 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
2298 | else | |
2299 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
9d139c81 | 2300 | |
51fb61e7 | 2301 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 2302 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 | 2303 | ifsta->ibss_join_req = jiffies; |
48c2fc59 | 2304 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f698d856 | 2305 | return ieee80211_sta_find_ibss(sdata, ifsta); |
f0706e82 | 2306 | } |
9d139c81 | 2307 | |
f0706e82 JB |
2308 | return 0; |
2309 | } | |
2310 | ||
2311 | ||
f698d856 | 2312 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
f0706e82 | 2313 | { |
f0706e82 JB |
2314 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2315 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
2316 | *len = ifsta->ssid_len; | |
2317 | return 0; | |
2318 | } | |
2319 | ||
2320 | ||
f698d856 | 2321 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
f0706e82 | 2322 | { |
f0706e82 JB |
2323 | struct ieee80211_if_sta *ifsta; |
2324 | int res; | |
2325 | ||
f0706e82 JB |
2326 | ifsta = &sdata->u.sta; |
2327 | ||
2328 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
2329 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
9d139c81 JB |
2330 | res = 0; |
2331 | /* | |
2332 | * Hack! See also ieee80211_sta_set_ssid. | |
2333 | */ | |
2334 | if (netif_running(sdata->dev)) | |
2335 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); | |
f0706e82 JB |
2336 | if (res) { |
2337 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
f698d856 | 2338 | "the low-level driver\n", sdata->dev->name); |
f0706e82 JB |
2339 | return res; |
2340 | } | |
2341 | } | |
2342 | ||
d6f2da5b JS |
2343 | if (is_valid_ether_addr(bssid)) |
2344 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 2345 | else |
d6f2da5b JS |
2346 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
2347 | ||
f0706e82 JB |
2348 | return 0; |
2349 | } | |
2350 | ||
2351 | ||
f698d856 | 2352 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
f0706e82 | 2353 | { |
f0706e82 | 2354 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
988c0f72 | 2355 | |
f0706e82 JB |
2356 | kfree(ifsta->extra_ie); |
2357 | if (len == 0) { | |
2358 | ifsta->extra_ie = NULL; | |
2359 | ifsta->extra_ie_len = 0; | |
2360 | return 0; | |
2361 | } | |
2362 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
2363 | if (!ifsta->extra_ie) { | |
2364 | ifsta->extra_ie_len = 0; | |
2365 | return -ENOMEM; | |
2366 | } | |
2367 | memcpy(ifsta->extra_ie, ie, len); | |
2368 | ifsta->extra_ie_len = len; | |
2369 | return 0; | |
2370 | } | |
2371 | ||
2372 | ||
f698d856 | 2373 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
988c0f72 | 2374 | struct sk_buff *skb, u8 *bssid, |
87291c02 | 2375 | u8 *addr, u64 supp_rates) |
f0706e82 | 2376 | { |
f698d856 | 2377 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2378 | struct sta_info *sta; |
0795af57 | 2379 | DECLARE_MAC_BUF(mac); |
87291c02 | 2380 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
2381 | |
2382 | /* TODO: Could consider removing the least recently used entry and | |
2383 | * allow new one to be added. */ | |
2384 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
2385 | if (net_ratelimit()) { | |
2386 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
f698d856 | 2387 | "entry %s\n", sdata->dev->name, print_mac(mac, addr)); |
f0706e82 JB |
2388 | } |
2389 | return NULL; | |
2390 | } | |
2391 | ||
1e188637 | 2392 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
87291c02 VK |
2393 | return NULL; |
2394 | ||
f4ea83dd | 2395 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
0795af57 | 2396 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
f698d856 | 2397 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name); |
f4ea83dd | 2398 | #endif |
f0706e82 | 2399 | |
73651ee6 JB |
2400 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
2401 | if (!sta) | |
f0706e82 JB |
2402 | return NULL; |
2403 | ||
07346f81 | 2404 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 2405 | |
8e1535d5 EG |
2406 | /* make sure mandatory rates are always added */ |
2407 | sta->supp_rates[band] = supp_rates | | |
2408 | ieee80211_sta_get_mandatory_rates(local, band); | |
f0706e82 JB |
2409 | |
2410 | rate_control_rate_init(sta, local); | |
2411 | ||
93e5deb1 | 2412 | if (sta_info_insert(sta)) |
73651ee6 | 2413 | return NULL; |
73651ee6 | 2414 | |
d0709a65 | 2415 | return sta; |
f0706e82 JB |
2416 | } |
2417 | ||
2418 | ||
60f8b39c JB |
2419 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
2420 | struct ieee80211_if_sta *ifsta) | |
2421 | { | |
2422 | struct ieee80211_local *local = sdata->local; | |
2423 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
2424 | int top_rssi = 0, freq; | |
2425 | ||
2426 | spin_lock_bh(&local->sta_bss_lock); | |
2427 | freq = local->oper_channel->center_freq; | |
2428 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2429 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
2430 | continue; | |
2431 | ||
2432 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
2433 | IEEE80211_STA_AUTO_BSSID_SEL | | |
2434 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
2435 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
2436 | !!sdata->default_key)) | |
2437 | continue; | |
2438 | ||
2439 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && | |
2440 | bss->freq != freq) | |
2441 | continue; | |
2442 | ||
2443 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && | |
2444 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) | |
2445 | continue; | |
2446 | ||
2447 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && | |
2448 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) | |
2449 | continue; | |
2450 | ||
2451 | if (!selected || top_rssi < bss->signal) { | |
2452 | selected = bss; | |
2453 | top_rssi = bss->signal; | |
2454 | } | |
2455 | } | |
2456 | if (selected) | |
2457 | atomic_inc(&selected->users); | |
2458 | spin_unlock_bh(&local->sta_bss_lock); | |
2459 | ||
2460 | if (selected) { | |
2461 | ieee80211_set_freq(sdata, selected->freq); | |
2462 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) | |
2463 | ieee80211_sta_set_ssid(sdata, selected->ssid, | |
2464 | selected->ssid_len); | |
2465 | ieee80211_sta_set_bssid(sdata, selected->bssid); | |
b079ada7 | 2466 | ieee80211_sta_def_wmm_params(sdata, selected); |
60f8b39c JB |
2467 | |
2468 | /* Send out direct probe if no probe resp was received or | |
2469 | * the one we have is outdated | |
2470 | */ | |
2471 | if (!selected->last_probe_resp || | |
2472 | time_after(jiffies, selected->last_probe_resp | |
2473 | + IEEE80211_SCAN_RESULT_EXPIRE)) | |
2474 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; | |
2475 | else | |
2476 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2477 | ||
2478 | ieee80211_rx_bss_put(local, selected); | |
2479 | ieee80211_sta_reset_auth(sdata, ifsta); | |
2480 | return 0; | |
2481 | } else { | |
2482 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { | |
2483 | ifsta->assoc_scan_tries++; | |
2484 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) | |
2485 | ieee80211_sta_start_scan(sdata, NULL, 0); | |
2486 | else | |
2487 | ieee80211_sta_start_scan(sdata, ifsta->ssid, | |
2488 | ifsta->ssid_len); | |
2489 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2490 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
2491 | } else | |
2492 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
2493 | } | |
2494 | return -1; | |
2495 | } | |
2496 | ||
2497 | ||
f698d856 | 2498 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2499 | { |
f0706e82 JB |
2500 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2501 | ||
f4ea83dd | 2502 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 2503 | sdata->dev->name, reason); |
f0706e82 | 2504 | |
51fb61e7 JB |
2505 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
2506 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
2507 | return -EINVAL; |
2508 | ||
aa458d17 | 2509 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
f0706e82 JB |
2510 | return 0; |
2511 | } | |
2512 | ||
2513 | ||
f698d856 | 2514 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2515 | { |
f0706e82 JB |
2516 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2517 | ||
f4ea83dd | 2518 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 2519 | sdata->dev->name, reason); |
f0706e82 | 2520 | |
51fb61e7 | 2521 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2522 | return -EINVAL; |
2523 | ||
d6f2da5b | 2524 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
2525 | return -1; |
2526 | ||
aa458d17 | 2527 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
f0706e82 JB |
2528 | return 0; |
2529 | } | |
84363e6e MA |
2530 | |
2531 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
2532 | enum ieee80211_notification_types notif_type) | |
2533 | { | |
2534 | struct ieee80211_local *local = hw_to_local(hw); | |
2535 | struct ieee80211_sub_if_data *sdata; | |
2536 | ||
2537 | switch (notif_type) { | |
2538 | case IEEE80211_NOTIFY_RE_ASSOC: | |
2539 | rcu_read_lock(); | |
2540 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
3e122be0 JB |
2541 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
2542 | continue; | |
84363e6e | 2543 | |
f698d856 | 2544 | ieee80211_sta_req_auth(sdata, &sdata->u.sta); |
84363e6e MA |
2545 | } |
2546 | rcu_read_unlock(); | |
2547 | break; | |
2548 | } | |
2549 | } | |
2550 | EXPORT_SYMBOL(ieee80211_notify_mac); | |
60f8b39c JB |
2551 | |
2552 | void ieee80211_sta_work(struct work_struct *work) | |
2553 | { | |
2554 | struct ieee80211_sub_if_data *sdata = | |
2555 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
2556 | struct ieee80211_local *local = sdata->local; | |
2557 | struct ieee80211_if_sta *ifsta; | |
2558 | struct sk_buff *skb; | |
2559 | ||
2560 | if (!netif_running(sdata->dev)) | |
2561 | return; | |
2562 | ||
2563 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
2564 | return; | |
2565 | ||
2566 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && | |
2567 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2568 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) | |
2569 | return; | |
2570 | ifsta = &sdata->u.sta; | |
2571 | ||
2572 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
2573 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
2574 | ||
2575 | #ifdef CONFIG_MAC80211_MESH | |
2576 | if (ifsta->preq_queue_len && | |
2577 | time_after(jiffies, | |
2578 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
2579 | mesh_path_start_discovery(sdata); | |
2580 | #endif | |
2581 | ||
2582 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && | |
2583 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
2584 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && | |
2585 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0fe8b33 | 2586 | ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len); |
60f8b39c JB |
2587 | return; |
2588 | } | |
2589 | ||
2590 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
2591 | if (ieee80211_sta_config_auth(sdata, ifsta)) | |
2592 | return; | |
2593 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2594 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
2595 | return; | |
2596 | ||
2597 | switch (ifsta->state) { | |
2598 | case IEEE80211_STA_MLME_DISABLED: | |
2599 | break; | |
2600 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
2601 | ieee80211_direct_probe(sdata, ifsta); | |
2602 | break; | |
2603 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
2604 | ieee80211_authenticate(sdata, ifsta); | |
2605 | break; | |
2606 | case IEEE80211_STA_MLME_ASSOCIATE: | |
2607 | ieee80211_associate(sdata, ifsta); | |
2608 | break; | |
2609 | case IEEE80211_STA_MLME_ASSOCIATED: | |
2610 | ieee80211_associated(sdata, ifsta); | |
2611 | break; | |
2612 | case IEEE80211_STA_MLME_IBSS_SEARCH: | |
2613 | ieee80211_sta_find_ibss(sdata, ifsta); | |
2614 | break; | |
2615 | case IEEE80211_STA_MLME_IBSS_JOINED: | |
2616 | ieee80211_sta_merge_ibss(sdata, ifsta); | |
2617 | break; | |
2618 | #ifdef CONFIG_MAC80211_MESH | |
2619 | case IEEE80211_STA_MLME_MESH_UP: | |
2620 | ieee80211_mesh_housekeeping(sdata, ifsta); | |
2621 | break; | |
2622 | #endif | |
2623 | default: | |
2624 | WARN_ON(1); | |
2625 | break; | |
2626 | } | |
2627 | ||
2628 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
2629 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
2630 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
2631 | ||
2632 | ieee80211_set_disassoc(sdata, ifsta, false, true, | |
2633 | WLAN_REASON_UNSPECIFIED); | |
2634 | } | |
2635 | } | |
0a51b27e JB |
2636 | |
2637 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
2638 | { | |
2639 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
2640 | struct ieee80211_if_sta *ifsta; | |
2641 | ||
2642 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
2643 | ifsta = &sdata->u.sta; | |
2644 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || | |
2645 | (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && | |
2646 | !ieee80211_sta_active_ibss(sdata))) | |
2647 | ieee80211_sta_find_ibss(sdata, ifsta); | |
2648 | } | |
2649 | } |