Commit | Line | Data |
---|---|---|
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 | ||
14 | /* TODO: | |
f0706e82 JB |
15 | * order BSS list by RSSI(?) ("quality of AP") |
16 | * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, | |
17 | * SSID) | |
18 | */ | |
5b323edb | 19 | #include <linux/delay.h> |
f0706e82 JB |
20 | #include <linux/if_ether.h> |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/wireless.h> | |
25 | #include <linux/random.h> | |
26 | #include <linux/etherdevice.h> | |
d0709a65 | 27 | #include <linux/rtnetlink.h> |
f0706e82 JB |
28 | #include <net/iw_handler.h> |
29 | #include <asm/types.h> | |
f0706e82 JB |
30 | |
31 | #include <net/mac80211.h> | |
32 | #include "ieee80211_i.h" | |
2c8dccc7 JB |
33 | #include "rate.h" |
34 | #include "led.h" | |
f709fc69 | 35 | #include "mesh.h" |
f0706e82 JB |
36 | |
37 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
39 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
40 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
41 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 42 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
43 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
44 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
45 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
46 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 47 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 JB |
48 | |
49 | #define IEEE80211_PROBE_DELAY (HZ / 33) | |
50 | #define IEEE80211_CHANNEL_TIME (HZ / 33) | |
51 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) | |
52 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
53 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) | |
54 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 55 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
56 | |
57 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
58 | ||
59 | ||
f0706e82 JB |
60 | #define ERP_INFO_USE_PROTECTION BIT(1) |
61 | ||
9f985b0e RR |
62 | /* mgmt header + 1 byte action code */ |
63 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) | |
64 | ||
65 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
66 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
67 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
688b88a4 RR |
68 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
69 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
9f985b0e | 70 | |
07db2183 RR |
71 | /* next values represent the buffer size for A-MPDU frame. |
72 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ | |
73 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
74 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
75 | ||
f0706e82 JB |
76 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, |
77 | u8 *ssid, size_t ssid_len); | |
78 | static struct ieee80211_sta_bss * | |
8318d78a | 79 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 80 | u8 *ssid, u8 ssid_len); |
f0706e82 JB |
81 | static void ieee80211_rx_bss_put(struct net_device *dev, |
82 | struct ieee80211_sta_bss *bss); | |
83 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
84 | struct ieee80211_if_sta *ifsta); | |
85 | static int ieee80211_sta_wep_configured(struct net_device *dev); | |
86 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
87 | u8 *ssid, size_t ssid_len); | |
88 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
89 | struct ieee80211_if_sta *ifsta); | |
712590de | 90 | static void sta_rx_agg_session_timer_expired(unsigned long data); |
f0706e82 JB |
91 | |
92 | ||
ee385855 LCC |
93 | void ieee802_11_parse_elems(u8 *start, size_t len, |
94 | struct ieee802_11_elems *elems) | |
f0706e82 JB |
95 | { |
96 | size_t left = len; | |
97 | u8 *pos = start; | |
f0706e82 JB |
98 | |
99 | memset(elems, 0, sizeof(*elems)); | |
100 | ||
101 | while (left >= 2) { | |
102 | u8 id, elen; | |
103 | ||
104 | id = *pos++; | |
105 | elen = *pos++; | |
106 | left -= 2; | |
107 | ||
67a4cce4 JL |
108 | if (elen > left) |
109 | return; | |
f0706e82 JB |
110 | |
111 | switch (id) { | |
112 | case WLAN_EID_SSID: | |
113 | elems->ssid = pos; | |
114 | elems->ssid_len = elen; | |
115 | break; | |
116 | case WLAN_EID_SUPP_RATES: | |
117 | elems->supp_rates = pos; | |
118 | elems->supp_rates_len = elen; | |
119 | break; | |
120 | case WLAN_EID_FH_PARAMS: | |
121 | elems->fh_params = pos; | |
122 | elems->fh_params_len = elen; | |
123 | break; | |
124 | case WLAN_EID_DS_PARAMS: | |
125 | elems->ds_params = pos; | |
126 | elems->ds_params_len = elen; | |
127 | break; | |
128 | case WLAN_EID_CF_PARAMS: | |
129 | elems->cf_params = pos; | |
130 | elems->cf_params_len = elen; | |
131 | break; | |
132 | case WLAN_EID_TIM: | |
133 | elems->tim = pos; | |
134 | elems->tim_len = elen; | |
135 | break; | |
136 | case WLAN_EID_IBSS_PARAMS: | |
137 | elems->ibss_params = pos; | |
138 | elems->ibss_params_len = elen; | |
139 | break; | |
140 | case WLAN_EID_CHALLENGE: | |
141 | elems->challenge = pos; | |
142 | elems->challenge_len = elen; | |
143 | break; | |
144 | case WLAN_EID_WPA: | |
145 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
146 | pos[2] == 0xf2) { | |
147 | /* Microsoft OUI (00:50:F2) */ | |
148 | if (pos[3] == 1) { | |
149 | /* OUI Type 1 - WPA IE */ | |
150 | elems->wpa = pos; | |
151 | elems->wpa_len = elen; | |
152 | } else if (elen >= 5 && pos[3] == 2) { | |
153 | if (pos[4] == 0) { | |
154 | elems->wmm_info = pos; | |
155 | elems->wmm_info_len = elen; | |
156 | } else if (pos[4] == 1) { | |
157 | elems->wmm_param = pos; | |
158 | elems->wmm_param_len = elen; | |
159 | } | |
160 | } | |
161 | } | |
162 | break; | |
163 | case WLAN_EID_RSN: | |
164 | elems->rsn = pos; | |
165 | elems->rsn_len = elen; | |
166 | break; | |
167 | case WLAN_EID_ERP_INFO: | |
168 | elems->erp_info = pos; | |
169 | elems->erp_info_len = elen; | |
170 | break; | |
171 | case WLAN_EID_EXT_SUPP_RATES: | |
172 | elems->ext_supp_rates = pos; | |
173 | elems->ext_supp_rates_len = elen; | |
174 | break; | |
c7153508 RR |
175 | case WLAN_EID_HT_CAPABILITY: |
176 | elems->ht_cap_elem = pos; | |
177 | elems->ht_cap_elem_len = elen; | |
178 | break; | |
179 | case WLAN_EID_HT_EXTRA_INFO: | |
180 | elems->ht_info_elem = pos; | |
181 | elems->ht_info_elem_len = elen; | |
182 | break; | |
ee385855 LCC |
183 | case WLAN_EID_MESH_ID: |
184 | elems->mesh_id = pos; | |
185 | elems->mesh_id_len = elen; | |
186 | break; | |
187 | case WLAN_EID_MESH_CONFIG: | |
188 | elems->mesh_config = pos; | |
189 | elems->mesh_config_len = elen; | |
190 | break; | |
191 | case WLAN_EID_PEER_LINK: | |
192 | elems->peer_link = pos; | |
193 | elems->peer_link_len = elen; | |
194 | break; | |
195 | case WLAN_EID_PREQ: | |
196 | elems->preq = pos; | |
197 | elems->preq_len = elen; | |
198 | break; | |
199 | case WLAN_EID_PREP: | |
200 | elems->prep = pos; | |
201 | elems->prep_len = elen; | |
202 | break; | |
203 | case WLAN_EID_PERR: | |
204 | elems->perr = pos; | |
205 | elems->perr_len = elen; | |
206 | break; | |
f0706e82 | 207 | default: |
f0706e82 JB |
208 | break; |
209 | } | |
210 | ||
211 | left -= elen; | |
212 | pos += elen; | |
213 | } | |
f0706e82 JB |
214 | } |
215 | ||
216 | ||
f0706e82 JB |
217 | static int ecw2cw(int ecw) |
218 | { | |
ac2bf324 | 219 | return (1 << ecw) - 1; |
f0706e82 JB |
220 | } |
221 | ||
e2839d8f VK |
222 | |
223 | static void ieee80211_sta_def_wmm_params(struct net_device *dev, | |
224 | struct ieee80211_sta_bss *bss, | |
225 | int ibss) | |
226 | { | |
227 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
228 | struct ieee80211_local *local = sdata->local; | |
229 | int i, have_higher_than_11mbit = 0; | |
230 | ||
231 | ||
232 | /* cf. IEEE 802.11 9.2.12 */ | |
233 | for (i = 0; i < bss->supp_rates_len; i++) | |
234 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
235 | have_higher_than_11mbit = 1; | |
236 | ||
237 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
238 | have_higher_than_11mbit) | |
239 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
240 | else | |
241 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
242 | ||
243 | ||
244 | if (local->ops->conf_tx) { | |
245 | struct ieee80211_tx_queue_params qparam; | |
e2839d8f VK |
246 | |
247 | memset(&qparam, 0, sizeof(qparam)); | |
248 | ||
249 | qparam.aifs = 2; | |
250 | ||
251 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
252 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
253 | qparam.cw_min = 31; | |
254 | else | |
255 | qparam.cw_min = 15; | |
256 | ||
257 | qparam.cw_max = 1023; | |
258 | qparam.txop = 0; | |
259 | ||
e100bb64 JB |
260 | for (i = 0; i < local_to_hw(local)->queues; i++) |
261 | local->ops->conf_tx(local_to_hw(local), i, &qparam); | |
e2839d8f VK |
262 | } |
263 | } | |
264 | ||
f0706e82 JB |
265 | static void ieee80211_sta_wmm_params(struct net_device *dev, |
266 | struct ieee80211_if_sta *ifsta, | |
267 | u8 *wmm_param, size_t wmm_param_len) | |
268 | { | |
269 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
270 | struct ieee80211_tx_queue_params params; | |
271 | size_t left; | |
272 | int count; | |
273 | u8 *pos; | |
274 | ||
3434fbd3 JB |
275 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
276 | return; | |
277 | ||
278 | if (!wmm_param) | |
279 | return; | |
280 | ||
f0706e82 JB |
281 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
282 | return; | |
283 | count = wmm_param[6] & 0x0f; | |
284 | if (count == ifsta->wmm_last_param_set) | |
285 | return; | |
286 | ifsta->wmm_last_param_set = count; | |
287 | ||
288 | pos = wmm_param + 8; | |
289 | left = wmm_param_len - 8; | |
290 | ||
291 | memset(¶ms, 0, sizeof(params)); | |
292 | ||
293 | if (!local->ops->conf_tx) | |
294 | return; | |
295 | ||
296 | local->wmm_acm = 0; | |
297 | for (; left >= 4; left -= 4, pos += 4) { | |
298 | int aci = (pos[0] >> 5) & 0x03; | |
299 | int acm = (pos[0] >> 4) & 0x01; | |
300 | int queue; | |
301 | ||
302 | switch (aci) { | |
303 | case 1: | |
e100bb64 | 304 | queue = 3; |
988c0f72 | 305 | if (acm) |
f0706e82 | 306 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
307 | break; |
308 | case 2: | |
e100bb64 | 309 | queue = 1; |
988c0f72 | 310 | if (acm) |
f0706e82 | 311 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
312 | break; |
313 | case 3: | |
e100bb64 | 314 | queue = 0; |
988c0f72 | 315 | if (acm) |
f0706e82 | 316 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
317 | break; |
318 | case 0: | |
319 | default: | |
e100bb64 | 320 | queue = 2; |
988c0f72 | 321 | if (acm) |
f0706e82 | 322 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
323 | break; |
324 | } | |
325 | ||
326 | params.aifs = pos[0] & 0x0f; | |
327 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
328 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
3330d7be JB |
329 | params.txop = pos[2] | (pos[3] << 8); |
330 | #ifdef CONFIG_MAC80211_DEBUG | |
f0706e82 | 331 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 332 | "cWmin=%d cWmax=%d txop=%d\n", |
f0706e82 | 333 | dev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
334 | params.cw_max, params.txop); |
335 | #endif | |
f0706e82 JB |
336 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
337 | * AC for now) */ | |
338 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
339 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
340 | "parameters for queue %d\n", dev->name, queue); | |
341 | } | |
342 | } | |
343 | } | |
344 | ||
50c4afb9 JL |
345 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
346 | bool use_protection, | |
347 | bool use_short_preamble) | |
5628221c | 348 | { |
471b3efd | 349 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
5628221c | 350 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 351 | DECLARE_MAC_BUF(mac); |
471b3efd | 352 | u32 changed = 0; |
5628221c | 353 | |
471b3efd | 354 | if (use_protection != bss_conf->use_cts_prot) { |
5628221c DD |
355 | if (net_ratelimit()) { |
356 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 357 | "%s)\n", |
471b3efd | 358 | sdata->dev->name, |
5628221c | 359 | use_protection ? "enabled" : "disabled", |
0795af57 | 360 | print_mac(mac, ifsta->bssid)); |
5628221c | 361 | } |
471b3efd JB |
362 | bss_conf->use_cts_prot = use_protection; |
363 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 364 | } |
7e9ed188 | 365 | |
d43c7b37 | 366 | if (use_short_preamble != bss_conf->use_short_preamble) { |
7e9ed188 DD |
367 | if (net_ratelimit()) { |
368 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 369 | " (BSSID=%s)\n", |
471b3efd | 370 | sdata->dev->name, |
d43c7b37 | 371 | use_short_preamble ? "short" : "long", |
0795af57 | 372 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 373 | } |
d43c7b37 | 374 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 375 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 376 | } |
d9430a32 | 377 | |
471b3efd | 378 | return changed; |
5628221c DD |
379 | } |
380 | ||
50c4afb9 JL |
381 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
382 | u8 erp_value) | |
383 | { | |
384 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
385 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
386 | ||
387 | return ieee80211_handle_protect_preamb(sdata, | |
388 | use_protection, use_short_preamble); | |
389 | } | |
390 | ||
391 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
392 | struct ieee80211_sta_bss *bss) | |
393 | { | |
394 | u32 changed = 0; | |
395 | ||
396 | if (bss->has_erp_value) | |
397 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
398 | else { | |
399 | u16 capab = bss->capability; | |
400 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
401 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
402 | } | |
403 | ||
404 | return changed; | |
405 | } | |
406 | ||
c7153508 RR |
407 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
408 | struct ieee80211_ht_info *ht_info) | |
409 | { | |
410 | ||
411 | if (ht_info == NULL) | |
412 | return -EINVAL; | |
413 | ||
414 | memset(ht_info, 0, sizeof(*ht_info)); | |
415 | ||
416 | if (ht_cap_ie) { | |
417 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
418 | ||
419 | ht_info->ht_supported = 1; | |
420 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
421 | ht_info->ampdu_factor = | |
422 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
423 | ht_info->ampdu_density = | |
424 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
425 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
426 | } else | |
427 | ht_info->ht_supported = 0; | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
433 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
434 | struct ieee80211_ht_bss_info *bss_info) | |
435 | { | |
436 | if (bss_info == NULL) | |
437 | return -EINVAL; | |
438 | ||
439 | memset(bss_info, 0, sizeof(*bss_info)); | |
440 | ||
441 | if (ht_add_info_ie) { | |
442 | u16 op_mode; | |
443 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
444 | ||
445 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
446 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
447 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
448 | } | |
449 | ||
450 | return 0; | |
451 | } | |
5628221c | 452 | |
f0706e82 JB |
453 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
454 | struct ieee80211_if_sta *ifsta) | |
455 | { | |
456 | char *buf; | |
457 | size_t len; | |
458 | int i; | |
459 | union iwreq_data wrqu; | |
460 | ||
461 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) | |
462 | return; | |
463 | ||
464 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + | |
0ec0b7ac | 465 | ifsta->assocresp_ies_len), GFP_KERNEL); |
f0706e82 JB |
466 | if (!buf) |
467 | return; | |
468 | ||
469 | len = sprintf(buf, "ASSOCINFO("); | |
470 | if (ifsta->assocreq_ies) { | |
471 | len += sprintf(buf + len, "ReqIEs="); | |
472 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { | |
473 | len += sprintf(buf + len, "%02x", | |
474 | ifsta->assocreq_ies[i]); | |
475 | } | |
476 | } | |
477 | if (ifsta->assocresp_ies) { | |
478 | if (ifsta->assocreq_ies) | |
479 | len += sprintf(buf + len, " "); | |
480 | len += sprintf(buf + len, "RespIEs="); | |
481 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
482 | len += sprintf(buf + len, "%02x", | |
483 | ifsta->assocresp_ies[i]); | |
484 | } | |
485 | } | |
486 | len += sprintf(buf + len, ")"); | |
487 | ||
488 | if (len > IW_CUSTOM_MAX) { | |
489 | len = sprintf(buf, "ASSOCRESPIE="); | |
490 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
491 | len += sprintf(buf + len, "%02x", | |
492 | ifsta->assocresp_ies[i]); | |
493 | } | |
494 | } | |
495 | ||
496 | memset(&wrqu, 0, sizeof(wrqu)); | |
497 | wrqu.data.length = len; | |
498 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
499 | ||
500 | kfree(buf); | |
501 | } | |
502 | ||
503 | ||
504 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 505 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 506 | bool assoc) |
f0706e82 | 507 | { |
471b3efd JB |
508 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
509 | struct ieee80211_local *local = sdata->local; | |
38668c05 | 510 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 511 | union iwreq_data wrqu; |
471b3efd | 512 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 513 | |
f0706e82 | 514 | if (assoc) { |
5628221c | 515 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
516 | |
517 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
518 | ||
51fb61e7 | 519 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 520 | return; |
5628221c | 521 | |
65c107ab | 522 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
38668c05 | 523 | conf->channel->center_freq, |
cffdd30d | 524 | ifsta->ssid, ifsta->ssid_len); |
5628221c | 525 | if (bss) { |
21c0cbe7 TW |
526 | /* set timing information */ |
527 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
528 | sdata->bss_conf.timestamp = bss->timestamp; | |
529 | ||
50c4afb9 | 530 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
21c0cbe7 | 531 | |
5628221c DD |
532 | ieee80211_rx_bss_put(dev, bss); |
533 | } | |
534 | ||
38668c05 TW |
535 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
536 | changed |= BSS_CHANGED_HT; | |
537 | sdata->bss_conf.assoc_ht = 1; | |
538 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
539 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
540 | } | |
541 | ||
f0706e82 | 542 | netif_carrier_on(dev); |
d6f2da5b | 543 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
544 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
545 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
546 | ieee80211_sta_send_associnfo(dev, ifsta); | |
547 | } else { | |
85249e5f | 548 | ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid); |
d6f2da5b | 549 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
f0706e82 | 550 | netif_carrier_off(dev); |
d9430a32 | 551 | ieee80211_reset_erp_info(dev); |
38668c05 TW |
552 | |
553 | sdata->bss_conf.assoc_ht = 0; | |
554 | sdata->bss_conf.ht_conf = NULL; | |
555 | sdata->bss_conf.ht_bss_conf = NULL; | |
556 | ||
f0706e82 JB |
557 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
558 | } | |
f0706e82 | 559 | ifsta->last_probe = jiffies; |
47f0c502 | 560 | ieee80211_led_assoc(local, assoc); |
471b3efd | 561 | |
b2205256 | 562 | sdata->bss_conf.assoc = assoc; |
471b3efd | 563 | ieee80211_bss_info_change_notify(sdata, changed); |
41a7be48 RC |
564 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
565 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
f0706e82 JB |
566 | } |
567 | ||
568 | static void ieee80211_set_disassoc(struct net_device *dev, | |
569 | struct ieee80211_if_sta *ifsta, int deauth) | |
570 | { | |
571 | if (deauth) | |
572 | ifsta->auth_tries = 0; | |
573 | ifsta->assoc_tries = 0; | |
574 | ieee80211_set_associated(dev, ifsta, 0); | |
575 | } | |
576 | ||
ee385855 LCC |
577 | void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, |
578 | int encrypt) | |
f0706e82 JB |
579 | { |
580 | struct ieee80211_sub_if_data *sdata; | |
e039fa4a | 581 | struct ieee80211_tx_info *info; |
f0706e82 JB |
582 | |
583 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
584 | skb->dev = sdata->local->mdev; | |
585 | skb_set_mac_header(skb, 0); | |
586 | skb_set_network_header(skb, 0); | |
587 | skb_set_transport_header(skb, 0); | |
588 | ||
e039fa4a JB |
589 | info = IEEE80211_SKB_CB(skb); |
590 | memset(info, 0, sizeof(struct ieee80211_tx_info)); | |
591 | info->control.ifindex = sdata->dev->ifindex; | |
e8bf9649 | 592 | if (!encrypt) |
e039fa4a | 593 | info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT; |
f0706e82 JB |
594 | |
595 | dev_queue_xmit(skb); | |
596 | } | |
597 | ||
598 | ||
599 | static void ieee80211_send_auth(struct net_device *dev, | |
600 | struct ieee80211_if_sta *ifsta, | |
601 | int transaction, u8 *extra, size_t extra_len, | |
602 | int encrypt) | |
603 | { | |
604 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
605 | struct sk_buff *skb; | |
606 | struct ieee80211_mgmt *mgmt; | |
607 | ||
608 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
609 | sizeof(*mgmt) + 6 + extra_len); | |
610 | if (!skb) { | |
611 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
612 | "frame\n", dev->name); | |
613 | return; | |
614 | } | |
615 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
616 | ||
617 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
618 | memset(mgmt, 0, 24 + 6); | |
619 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
620 | IEEE80211_STYPE_AUTH); | |
621 | if (encrypt) | |
622 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
623 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
624 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
625 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
626 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
627 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
628 | ifsta->auth_transaction = transaction + 1; | |
629 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
630 | if (extra) | |
631 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
632 | ||
633 | ieee80211_sta_tx(dev, skb, encrypt); | |
634 | } | |
635 | ||
636 | ||
637 | static void ieee80211_authenticate(struct net_device *dev, | |
638 | struct ieee80211_if_sta *ifsta) | |
639 | { | |
0795af57 JP |
640 | DECLARE_MAC_BUF(mac); |
641 | ||
f0706e82 JB |
642 | ifsta->auth_tries++; |
643 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 644 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 645 | " timed out\n", |
0795af57 | 646 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
647 | ifsta->state = IEEE80211_DISABLED; |
648 | return; | |
649 | } | |
650 | ||
651 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
652 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
653 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
654 | |
655 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
656 | ||
657 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
658 | } | |
659 | ||
36d16ae7 HS |
660 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
661 | struct ieee80211_supported_band *sband, | |
662 | u64 *rates) | |
663 | { | |
664 | int i, j, count; | |
665 | *rates = 0; | |
666 | count = 0; | |
667 | for (i = 0; i < bss->supp_rates_len; i++) { | |
668 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
669 | ||
670 | for (j = 0; j < sband->n_bitrates; j++) | |
671 | if (sband->bitrates[j].bitrate == rate) { | |
672 | *rates |= BIT(j); | |
673 | count++; | |
674 | break; | |
675 | } | |
676 | } | |
677 | ||
678 | return count; | |
679 | } | |
f0706e82 JB |
680 | |
681 | static void ieee80211_send_assoc(struct net_device *dev, | |
682 | struct ieee80211_if_sta *ifsta) | |
683 | { | |
684 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f0706e82 JB |
685 | struct sk_buff *skb; |
686 | struct ieee80211_mgmt *mgmt; | |
687 | u8 *pos, *ies; | |
36d16ae7 | 688 | int i, len, count, rates_len, supp_rates_len; |
f0706e82 JB |
689 | u16 capab; |
690 | struct ieee80211_sta_bss *bss; | |
691 | int wmm = 0; | |
8318d78a | 692 | struct ieee80211_supported_band *sband; |
36d16ae7 | 693 | u64 rates = 0; |
f0706e82 JB |
694 | |
695 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
696 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
697 | ifsta->ssid_len); | |
698 | if (!skb) { | |
699 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
700 | "frame\n", dev->name); | |
701 | return; | |
702 | } | |
703 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
704 | ||
8318d78a JB |
705 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
706 | ||
f0706e82 | 707 | capab = ifsta->capab; |
8318d78a JB |
708 | |
709 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
710 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
711 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
712 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
713 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
f0706e82 | 714 | } |
8318d78a JB |
715 | |
716 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, | |
717 | local->hw.conf.channel->center_freq, | |
cffdd30d | 718 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
719 | if (bss) { |
720 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
721 | capab |= WLAN_CAPABILITY_PRIVACY; | |
988c0f72 | 722 | if (bss->wmm_ie) |
f0706e82 | 723 | wmm = 1; |
0d580a77 HS |
724 | |
725 | /* get all rates supported by the device and the AP as | |
726 | * some APs don't like getting a superset of their rates | |
727 | * in the association request (e.g. D-Link DAP 1353 in | |
728 | * b-only mode) */ | |
729 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
730 | ||
f0706e82 | 731 | ieee80211_rx_bss_put(dev, bss); |
0d580a77 HS |
732 | } else { |
733 | rates = ~0; | |
734 | rates_len = sband->n_bitrates; | |
f0706e82 JB |
735 | } |
736 | ||
737 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
738 | memset(mgmt, 0, 24); | |
739 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
740 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
741 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
742 | ||
d6f2da5b | 743 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
744 | skb_put(skb, 10); |
745 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
746 | IEEE80211_STYPE_REASSOC_REQ); | |
747 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
748 | mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1); | |
749 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
750 | ETH_ALEN); | |
751 | } else { | |
752 | skb_put(skb, 4); | |
753 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
754 | IEEE80211_STYPE_ASSOC_REQ); | |
755 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
756 | mgmt->u.assoc_req.listen_interval = cpu_to_le16(1); | |
757 | } | |
758 | ||
759 | /* SSID */ | |
760 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
761 | *pos++ = WLAN_EID_SSID; | |
762 | *pos++ = ifsta->ssid_len; | |
763 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
764 | ||
0d580a77 | 765 | /* add all rates which were marked to be used above */ |
36d16ae7 HS |
766 | supp_rates_len = rates_len; |
767 | if (supp_rates_len > 8) | |
768 | supp_rates_len = 8; | |
769 | ||
8318d78a | 770 | len = sband->n_bitrates; |
36d16ae7 | 771 | pos = skb_put(skb, supp_rates_len + 2); |
f0706e82 | 772 | *pos++ = WLAN_EID_SUPP_RATES; |
36d16ae7 | 773 | *pos++ = supp_rates_len; |
f0706e82 | 774 | |
36d16ae7 HS |
775 | count = 0; |
776 | for (i = 0; i < sband->n_bitrates; i++) { | |
777 | if (BIT(i) & rates) { | |
8318d78a | 778 | int rate = sband->bitrates[i].bitrate; |
f0706e82 | 779 | *pos++ = (u8) (rate / 5); |
36d16ae7 HS |
780 | if (++count == 8) |
781 | break; | |
782 | } | |
783 | } | |
784 | ||
785 | if (count == 8) { | |
786 | pos = skb_put(skb, rates_len - count + 2); | |
787 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
788 | *pos++ = rates_len - count; | |
789 | ||
790 | for (i++; i < sband->n_bitrates; i++) { | |
791 | if (BIT(i) & rates) { | |
792 | int rate = sband->bitrates[i].bitrate; | |
793 | *pos++ = (u8) (rate / 5); | |
794 | } | |
f0706e82 JB |
795 | } |
796 | } | |
797 | ||
798 | if (ifsta->extra_ie) { | |
799 | pos = skb_put(skb, ifsta->extra_ie_len); | |
800 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
801 | } | |
802 | ||
d6f2da5b | 803 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
804 | pos = skb_put(skb, 9); |
805 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
806 | *pos++ = 7; /* len */ | |
807 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
808 | *pos++ = 0x50; | |
809 | *pos++ = 0xf2; | |
810 | *pos++ = 2; /* WME */ | |
811 | *pos++ = 0; /* WME info */ | |
812 | *pos++ = 1; /* WME ver */ | |
813 | *pos++ = 0; | |
814 | } | |
3434fbd3 | 815 | |
c7153508 | 816 | /* wmm support is a must to HT */ |
3434fbd3 | 817 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
9306102e EG |
818 | sband->ht_info.ht_supported && bss->ht_add_ie) { |
819 | struct ieee80211_ht_addt_info *ht_add_info = | |
820 | (struct ieee80211_ht_addt_info *)bss->ht_add_ie; | |
821 | u16 cap = sband->ht_info.cap; | |
822 | __le16 tmp; | |
823 | u32 flags = local->hw.conf.channel->flags; | |
824 | ||
825 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
826 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
827 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
828 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
829 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
830 | } | |
831 | break; | |
832 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
833 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
834 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
835 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
836 | } | |
837 | break; | |
838 | } | |
839 | ||
840 | tmp = cpu_to_le16(cap); | |
c7153508 RR |
841 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
842 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
843 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
844 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
845 | memcpy(pos, &tmp, sizeof(u16)); | |
846 | pos += sizeof(u16); | |
8318d78a JB |
847 | /* TODO: needs a define here for << 2 */ |
848 | *pos++ = sband->ht_info.ampdu_factor | | |
849 | (sband->ht_info.ampdu_density << 2); | |
850 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
c7153508 | 851 | } |
f0706e82 JB |
852 | |
853 | kfree(ifsta->assocreq_ies); | |
854 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 855 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
856 | if (ifsta->assocreq_ies) |
857 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
858 | ||
859 | ieee80211_sta_tx(dev, skb, 0); | |
860 | } | |
861 | ||
862 | ||
863 | static void ieee80211_send_deauth(struct net_device *dev, | |
864 | struct ieee80211_if_sta *ifsta, u16 reason) | |
865 | { | |
866 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
867 | struct sk_buff *skb; | |
868 | struct ieee80211_mgmt *mgmt; | |
869 | ||
870 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
871 | if (!skb) { | |
872 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
873 | "frame\n", dev->name); | |
874 | return; | |
875 | } | |
876 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
877 | ||
878 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
879 | memset(mgmt, 0, 24); | |
880 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
881 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
882 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
883 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
884 | IEEE80211_STYPE_DEAUTH); | |
885 | skb_put(skb, 2); | |
886 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
887 | ||
888 | ieee80211_sta_tx(dev, skb, 0); | |
889 | } | |
890 | ||
891 | ||
892 | static void ieee80211_send_disassoc(struct net_device *dev, | |
893 | struct ieee80211_if_sta *ifsta, u16 reason) | |
894 | { | |
895 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
896 | struct sk_buff *skb; | |
897 | struct ieee80211_mgmt *mgmt; | |
898 | ||
899 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
900 | if (!skb) { | |
901 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
902 | "frame\n", dev->name); | |
903 | return; | |
904 | } | |
905 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
906 | ||
907 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
908 | memset(mgmt, 0, 24); | |
909 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
910 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
911 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
912 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
913 | IEEE80211_STYPE_DISASSOC); | |
914 | skb_put(skb, 2); | |
915 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
916 | ||
917 | ieee80211_sta_tx(dev, skb, 0); | |
918 | } | |
919 | ||
920 | ||
921 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
922 | struct ieee80211_if_sta *ifsta) | |
923 | { | |
65c107ab | 924 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 925 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
926 | int bss_privacy; |
927 | int wep_privacy; | |
928 | int privacy_invoked; | |
f0706e82 | 929 | |
5b98b1f7 | 930 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
931 | return 0; |
932 | ||
8318d78a JB |
933 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
934 | local->hw.conf.channel->center_freq, | |
cffdd30d | 935 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
936 | if (!bss) |
937 | return 0; | |
938 | ||
5b98b1f7 JB |
939 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
940 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
941 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 JB |
942 | |
943 | ieee80211_rx_bss_put(dev, bss); | |
944 | ||
5b98b1f7 JB |
945 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
946 | return 0; | |
947 | ||
948 | return 1; | |
f0706e82 JB |
949 | } |
950 | ||
951 | ||
952 | static void ieee80211_associate(struct net_device *dev, | |
953 | struct ieee80211_if_sta *ifsta) | |
954 | { | |
0795af57 JP |
955 | DECLARE_MAC_BUF(mac); |
956 | ||
f0706e82 JB |
957 | ifsta->assoc_tries++; |
958 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 959 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 960 | " timed out\n", |
0795af57 | 961 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
962 | ifsta->state = IEEE80211_DISABLED; |
963 | return; | |
964 | } | |
965 | ||
966 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
967 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
968 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
969 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
970 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
971 | "mixed-cell disabled - abort association\n", dev->name); | |
972 | ifsta->state = IEEE80211_DISABLED; | |
973 | return; | |
974 | } | |
975 | ||
976 | ieee80211_send_assoc(dev, ifsta); | |
977 | ||
978 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
979 | } | |
980 | ||
981 | ||
982 | static void ieee80211_associated(struct net_device *dev, | |
983 | struct ieee80211_if_sta *ifsta) | |
984 | { | |
985 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
986 | struct sta_info *sta; | |
987 | int disassoc; | |
0795af57 | 988 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
989 | |
990 | /* TODO: start monitoring current AP signal quality and number of | |
991 | * missed beacons. Scan other channels every now and then and search | |
992 | * for better APs. */ | |
993 | /* TODO: remove expired BSSes */ | |
994 | ||
995 | ifsta->state = IEEE80211_ASSOCIATED; | |
996 | ||
d0709a65 JB |
997 | rcu_read_lock(); |
998 | ||
f0706e82 JB |
999 | sta = sta_info_get(local, ifsta->bssid); |
1000 | if (!sta) { | |
0795af57 JP |
1001 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
1002 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1003 | disassoc = 1; |
1004 | } else { | |
1005 | disassoc = 0; | |
1006 | if (time_after(jiffies, | |
1007 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 1008 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 1009 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 1010 | "current AP %s - assume out of " |
f0706e82 | 1011 | "range\n", |
0795af57 | 1012 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 1013 | disassoc = 1; |
d0709a65 | 1014 | sta_info_unlink(&sta); |
d6f2da5b | 1015 | } else |
f0706e82 JB |
1016 | ieee80211_send_probe_req(dev, ifsta->bssid, |
1017 | local->scan_ssid, | |
1018 | local->scan_ssid_len); | |
d6f2da5b | 1019 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 1020 | } else { |
d6f2da5b | 1021 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
1022 | if (time_after(jiffies, ifsta->last_probe + |
1023 | IEEE80211_PROBE_INTERVAL)) { | |
1024 | ifsta->last_probe = jiffies; | |
1025 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
1026 | ifsta->ssid, | |
1027 | ifsta->ssid_len); | |
1028 | } | |
1029 | } | |
f0706e82 | 1030 | } |
d0709a65 JB |
1031 | |
1032 | rcu_read_unlock(); | |
1033 | ||
3b96766f | 1034 | if (disassoc && sta) |
d0709a65 | 1035 | sta_info_destroy(sta); |
d0709a65 | 1036 | |
f0706e82 | 1037 | if (disassoc) { |
2d192d95 MW |
1038 | ifsta->state = IEEE80211_DISABLED; |
1039 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
1040 | } else { |
1041 | mod_timer(&ifsta->timer, jiffies + | |
1042 | IEEE80211_MONITORING_INTERVAL); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | ||
1047 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
1048 | u8 *ssid, size_t ssid_len) | |
1049 | { | |
1050 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 1051 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
1052 | struct sk_buff *skb; |
1053 | struct ieee80211_mgmt *mgmt; | |
1054 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
1055 | int i; | |
1056 | ||
1057 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
1058 | if (!skb) { | |
1059 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
1060 | "request\n", dev->name); | |
1061 | return; | |
1062 | } | |
1063 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1064 | ||
1065 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1066 | memset(mgmt, 0, 24); | |
1067 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1068 | IEEE80211_STYPE_PROBE_REQ); | |
1069 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1070 | if (dst) { | |
1071 | memcpy(mgmt->da, dst, ETH_ALEN); | |
1072 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
1073 | } else { | |
1074 | memset(mgmt->da, 0xff, ETH_ALEN); | |
1075 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
1076 | } | |
1077 | pos = skb_put(skb, 2 + ssid_len); | |
1078 | *pos++ = WLAN_EID_SSID; | |
1079 | *pos++ = ssid_len; | |
1080 | memcpy(pos, ssid, ssid_len); | |
1081 | ||
1082 | supp_rates = skb_put(skb, 2); | |
1083 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
1084 | supp_rates[1] = 0; | |
8318d78a JB |
1085 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
1086 | ||
1087 | for (i = 0; i < sband->n_bitrates; i++) { | |
1088 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
f0706e82 JB |
1089 | if (esupp_rates) { |
1090 | pos = skb_put(skb, 1); | |
1091 | esupp_rates[1]++; | |
1092 | } else if (supp_rates[1] == 8) { | |
1093 | esupp_rates = skb_put(skb, 3); | |
1094 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
1095 | esupp_rates[1] = 1; | |
1096 | pos = &esupp_rates[2]; | |
1097 | } else { | |
1098 | pos = skb_put(skb, 1); | |
1099 | supp_rates[1]++; | |
1100 | } | |
8318d78a | 1101 | *pos = rate->bitrate / 5; |
f0706e82 JB |
1102 | } |
1103 | ||
1104 | ieee80211_sta_tx(dev, skb, 0); | |
1105 | } | |
1106 | ||
1107 | ||
1108 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
1109 | { | |
1110 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1111 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 1112 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
1113 | return 0; |
1114 | return 1; | |
1115 | } | |
1116 | ||
1117 | ||
1118 | static void ieee80211_auth_completed(struct net_device *dev, | |
1119 | struct ieee80211_if_sta *ifsta) | |
1120 | { | |
1121 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 1122 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1123 | ieee80211_associate(dev, ifsta); |
1124 | } | |
1125 | ||
1126 | ||
1127 | static void ieee80211_auth_challenge(struct net_device *dev, | |
1128 | struct ieee80211_if_sta *ifsta, | |
1129 | struct ieee80211_mgmt *mgmt, | |
1130 | size_t len) | |
1131 | { | |
1132 | u8 *pos; | |
1133 | struct ieee802_11_elems elems; | |
1134 | ||
1135 | printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name); | |
1136 | pos = mgmt->u.auth.variable; | |
67a4cce4 | 1137 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1138 | if (!elems.challenge) { |
1139 | printk(KERN_DEBUG "%s: no challenge IE in shared key auth " | |
1140 | "frame\n", dev->name); | |
1141 | return; | |
1142 | } | |
1143 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, | |
1144 | elems.challenge_len + 2, 1); | |
1145 | } | |
1146 | ||
9f985b0e RR |
1147 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
1148 | u8 dialog_token, u16 status, u16 policy, | |
1149 | u16 buf_size, u16 timeout) | |
1150 | { | |
1151 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1152 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1153 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1154 | struct sk_buff *skb; | |
1155 | struct ieee80211_mgmt *mgmt; | |
1156 | u16 capab; | |
1157 | ||
3acea5b6 EK |
1158 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
1159 | ||
9f985b0e RR |
1160 | if (!skb) { |
1161 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1162 | "for addba resp frame\n", dev->name); | |
1163 | return; | |
1164 | } | |
1165 | ||
1166 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1167 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1168 | memset(mgmt, 0, 24); | |
1169 | memcpy(mgmt->da, da, ETH_ALEN); | |
1170 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1171 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1172 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1173 | else | |
1174 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1175 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1176 | IEEE80211_STYPE_ACTION); | |
1177 | ||
1178 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1179 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1180 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1181 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1182 | ||
1183 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1184 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1185 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1186 | ||
1187 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1188 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1189 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1190 | ||
1191 | ieee80211_sta_tx(dev, skb, 0); | |
1192 | ||
1193 | return; | |
1194 | } | |
1195 | ||
eadc8d9e RR |
1196 | void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, |
1197 | u16 tid, u8 dialog_token, u16 start_seq_num, | |
1198 | u16 agg_size, u16 timeout) | |
1199 | { | |
1200 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1201 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1202 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1203 | struct sk_buff *skb; | |
1204 | struct ieee80211_mgmt *mgmt; | |
1205 | u16 capab; | |
1206 | ||
3acea5b6 | 1207 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
eadc8d9e RR |
1208 | |
1209 | if (!skb) { | |
1210 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1211 | "for addba request frame\n", dev->name); | |
1212 | return; | |
1213 | } | |
1214 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1215 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1216 | memset(mgmt, 0, 24); | |
1217 | memcpy(mgmt->da, da, ETH_ALEN); | |
1218 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1219 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
1220 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); | |
1221 | else | |
1222 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1223 | ||
1224 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1225 | IEEE80211_STYPE_ACTION); | |
1226 | ||
1227 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); | |
1228 | ||
1229 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1230 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; | |
1231 | ||
1232 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; | |
1233 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ | |
1234 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1235 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ | |
1236 | ||
1237 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); | |
1238 | ||
1239 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); | |
1240 | mgmt->u.action.u.addba_req.start_seq_num = | |
1241 | cpu_to_le16(start_seq_num << 4); | |
1242 | ||
1243 | ieee80211_sta_tx(dev, skb, 0); | |
1244 | } | |
1245 | ||
9f985b0e RR |
1246 | static void ieee80211_sta_process_addba_request(struct net_device *dev, |
1247 | struct ieee80211_mgmt *mgmt, | |
1248 | size_t len) | |
1249 | { | |
1250 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1251 | struct ieee80211_hw *hw = &local->hw; |
1252 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1253 | struct sta_info *sta; |
07db2183 RR |
1254 | struct tid_ampdu_rx *tid_agg_rx; |
1255 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1256 | u8 dialog_token; |
07db2183 RR |
1257 | int ret = -EOPNOTSUPP; |
1258 | DECLARE_MAC_BUF(mac); | |
9f985b0e | 1259 | |
d0709a65 JB |
1260 | rcu_read_lock(); |
1261 | ||
9f985b0e | 1262 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1263 | if (!sta) { |
1264 | rcu_read_unlock(); | |
9f985b0e | 1265 | return; |
d0709a65 | 1266 | } |
9f985b0e RR |
1267 | |
1268 | /* extract session parameters from addba request frame */ | |
1269 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1270 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1271 | start_seq_num = |
1272 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1273 | |
1274 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1275 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1276 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1277 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1278 | ||
9f985b0e RR |
1279 | status = WLAN_STATUS_REQUEST_DECLINED; |
1280 | ||
07db2183 RR |
1281 | /* sanity check for incoming parameters: |
1282 | * check if configuration can support the BA policy | |
1283 | * and if buffer size does not exceeds max value */ | |
1284 | if (((ba_policy != 1) | |
1285 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1286 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1287 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1288 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1289 | if (net_ratelimit()) | |
7b9d44cd | 1290 | printk(KERN_DEBUG "AddBA Req with bad params from " |
07db2183 RR |
1291 | "%s on tid %u. policy %d, buffer size %d\n", |
1292 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1293 | buf_size); | |
1294 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1295 | goto end_no_lock; | |
1296 | } | |
1297 | /* determine default buffer size */ | |
1298 | if (buf_size == 0) { | |
8318d78a JB |
1299 | struct ieee80211_supported_band *sband; |
1300 | ||
1301 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1302 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1303 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1304 | } |
1305 | ||
07db2183 RR |
1306 | |
1307 | /* examine state machine */ | |
07346f81 | 1308 | spin_lock_bh(&sta->lock); |
07db2183 | 1309 | |
cee24a3e | 1310 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
07db2183 RR |
1311 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1312 | if (net_ratelimit()) | |
7b9d44cd | 1313 | printk(KERN_DEBUG "unexpected AddBA Req from " |
07db2183 RR |
1314 | "%s on tid %u\n", |
1315 | print_mac(mac, mgmt->sa), tid); | |
1316 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1317 | goto end; | |
1318 | } | |
1319 | ||
cee24a3e RR |
1320 | /* prepare A-MPDU MLME for Rx aggregation */ |
1321 | sta->ampdu_mlme.tid_rx[tid] = | |
1322 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); | |
1323 | if (!sta->ampdu_mlme.tid_rx[tid]) { | |
1324 | if (net_ratelimit()) | |
1325 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", | |
1326 | tid); | |
1327 | goto end; | |
1328 | } | |
1329 | /* rx timer */ | |
1330 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = | |
1331 | sta_rx_agg_session_timer_expired; | |
1332 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = | |
1333 | (unsigned long)&sta->timer_to_tid[tid]; | |
1334 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); | |
1335 | ||
1336 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; | |
1337 | ||
07db2183 RR |
1338 | /* prepare reordering buffer */ |
1339 | tid_agg_rx->reorder_buf = | |
c97c23e3 | 1340 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
03147dfc JB |
1341 | if (!tid_agg_rx->reorder_buf) { |
1342 | if (net_ratelimit()) | |
1343 | printk(KERN_ERR "can not allocate reordering buffer " | |
1344 | "to tid %d\n", tid); | |
cee24a3e | 1345 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
07db2183 RR |
1346 | goto end; |
1347 | } | |
1348 | memset(tid_agg_rx->reorder_buf, 0, | |
c97c23e3 | 1349 | buf_size * sizeof(struct sk_buff *)); |
07db2183 RR |
1350 | |
1351 | if (local->ops->ampdu_action) | |
1352 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1353 | sta->addr, tid, &start_seq_num); |
07db2183 | 1354 | #ifdef CONFIG_MAC80211_HT_DEBUG |
513a1025 | 1355 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
07db2183 RR |
1356 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
1357 | ||
1358 | if (ret) { | |
1359 | kfree(tid_agg_rx->reorder_buf); | |
cee24a3e RR |
1360 | kfree(tid_agg_rx); |
1361 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
07db2183 RR |
1362 | goto end; |
1363 | } | |
1364 | ||
1365 | /* change state and send addba resp */ | |
cee24a3e | 1366 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
07db2183 RR |
1367 | tid_agg_rx->dialog_token = dialog_token; |
1368 | tid_agg_rx->ssn = start_seq_num; | |
1369 | tid_agg_rx->head_seq_num = start_seq_num; | |
1370 | tid_agg_rx->buf_size = buf_size; | |
1371 | tid_agg_rx->timeout = timeout; | |
1372 | tid_agg_rx->stored_mpdu_num = 0; | |
1373 | status = WLAN_STATUS_SUCCESS; | |
1374 | end: | |
07346f81 | 1375 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1376 | |
1377 | end_no_lock: | |
d0709a65 JB |
1378 | ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid, |
1379 | dialog_token, status, 1, buf_size, timeout); | |
1380 | rcu_read_unlock(); | |
9f985b0e | 1381 | } |
f0706e82 | 1382 | |
eadc8d9e RR |
1383 | static void ieee80211_sta_process_addba_resp(struct net_device *dev, |
1384 | struct ieee80211_mgmt *mgmt, | |
1385 | size_t len) | |
1386 | { | |
1387 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1388 | struct ieee80211_hw *hw = &local->hw; | |
1389 | struct sta_info *sta; | |
1390 | u16 capab; | |
1391 | u16 tid; | |
1392 | u8 *state; | |
1393 | ||
d0709a65 JB |
1394 | rcu_read_lock(); |
1395 | ||
eadc8d9e | 1396 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1397 | if (!sta) { |
1398 | rcu_read_unlock(); | |
eadc8d9e | 1399 | return; |
d0709a65 | 1400 | } |
eadc8d9e RR |
1401 | |
1402 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1403 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1404 | ||
cee24a3e | 1405 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1406 | |
07346f81 | 1407 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1408 | |
cee24a3e | 1409 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1410 | spin_unlock_bh(&sta->lock); |
cee24a3e RR |
1411 | printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:" |
1412 | "%d\n", *state); | |
1413 | goto addba_resp_exit; | |
1414 | } | |
1415 | ||
eadc8d9e | 1416 | if (mgmt->u.action.u.addba_resp.dialog_token != |
cee24a3e | 1417 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
07346f81 | 1418 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1419 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1420 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1421 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 1422 | goto addba_resp_exit; |
eadc8d9e RR |
1423 | } |
1424 | ||
cee24a3e | 1425 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e RR |
1426 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1427 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1428 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1429 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1430 | == WLAN_STATUS_SUCCESS) { | |
eadc8d9e RR |
1431 | if (*state & HT_ADDBA_RECEIVED_MSK) |
1432 | printk(KERN_DEBUG "double addBA response\n"); | |
1433 | ||
1434 | *state |= HT_ADDBA_RECEIVED_MSK; | |
cee24a3e | 1435 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
eadc8d9e RR |
1436 | |
1437 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
1438 | printk(KERN_DEBUG "Aggregation on for tid %d \n", tid); | |
1439 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
1440 | } | |
1441 | ||
07346f81 | 1442 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1443 | printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid); |
1444 | } else { | |
1445 | printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid); | |
1446 | ||
cee24a3e | 1447 | sta->ampdu_mlme.addba_req_num[tid]++; |
eadc8d9e RR |
1448 | /* this will allow the state check in stop_BA_session */ |
1449 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1450 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1451 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
1452 | WLAN_BACK_INITIATOR); | |
1453 | } | |
cee24a3e RR |
1454 | |
1455 | addba_resp_exit: | |
d0709a65 | 1456 | rcu_read_unlock(); |
eadc8d9e RR |
1457 | } |
1458 | ||
1459 | void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, | |
1460 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1461 | { |
1462 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1463 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1464 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1465 | struct sk_buff *skb; | |
1466 | struct ieee80211_mgmt *mgmt; | |
1467 | u16 params; | |
1468 | ||
3acea5b6 | 1469 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
07db2183 RR |
1470 | |
1471 | if (!skb) { | |
1472 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1473 | "for delba frame\n", dev->name); | |
1474 | return; | |
1475 | } | |
1476 | ||
1477 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1478 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1479 | memset(mgmt, 0, 24); | |
1480 | memcpy(mgmt->da, da, ETH_ALEN); | |
1481 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1482 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1483 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1484 | else | |
1485 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1486 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1487 | IEEE80211_STYPE_ACTION); | |
1488 | ||
1489 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1490 | ||
1491 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1492 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1493 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1494 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1495 | ||
1496 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1497 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1498 | ||
1499 | ieee80211_sta_tx(dev, skb, 0); | |
1500 | } | |
1501 | ||
1502 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, | |
1503 | u16 initiator, u16 reason) | |
1504 | { | |
1505 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1506 | struct ieee80211_hw *hw = &local->hw; | |
1507 | struct sta_info *sta; | |
b580781e | 1508 | int ret, i; |
513a1025 | 1509 | DECLARE_MAC_BUF(mac); |
07db2183 | 1510 | |
d0709a65 JB |
1511 | rcu_read_lock(); |
1512 | ||
07db2183 | 1513 | sta = sta_info_get(local, ra); |
d0709a65 JB |
1514 | if (!sta) { |
1515 | rcu_read_unlock(); | |
07db2183 | 1516 | return; |
d0709a65 | 1517 | } |
07db2183 RR |
1518 | |
1519 | /* check if TID is in operational state */ | |
07346f81 | 1520 | spin_lock_bh(&sta->lock); |
cee24a3e | 1521 | if (sta->ampdu_mlme.tid_state_rx[tid] |
07db2183 | 1522 | != HT_AGG_STATE_OPERATIONAL) { |
07346f81 | 1523 | spin_unlock_bh(&sta->lock); |
d0709a65 | 1524 | rcu_read_unlock(); |
07db2183 RR |
1525 | return; |
1526 | } | |
cee24a3e | 1527 | sta->ampdu_mlme.tid_state_rx[tid] = |
07db2183 RR |
1528 | HT_AGG_STATE_REQ_STOP_BA_MSK | |
1529 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
07346f81 | 1530 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1531 | |
1532 | /* stop HW Rx aggregation. ampdu_action existence | |
1533 | * already verified in session init so we add the BUG_ON */ | |
1534 | BUG_ON(!local->ops->ampdu_action); | |
1535 | ||
513a1025 RR |
1536 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1537 | printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", | |
1538 | print_mac(mac, ra), tid); | |
1539 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1540 | ||
07db2183 | 1541 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, |
0df3ef45 | 1542 | ra, tid, NULL); |
07db2183 RR |
1543 | if (ret) |
1544 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
1545 | "aggergation for tid %d\n", tid); | |
1546 | ||
1547 | /* shutdown timer has not expired */ | |
1548 | if (initiator != WLAN_BACK_TIMER) | |
cee24a3e | 1549 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
07db2183 RR |
1550 | |
1551 | /* check if this is a self generated aggregation halt */ | |
1552 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1553 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1554 | ||
1555 | /* free the reordering buffer */ | |
cee24a3e RR |
1556 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { |
1557 | if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { | |
b580781e | 1558 | /* release the reordered frames */ |
cee24a3e RR |
1559 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); |
1560 | sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; | |
1561 | sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; | |
b580781e RR |
1562 | } |
1563 | } | |
cee24a3e RR |
1564 | /* free resources */ |
1565 | kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); | |
1566 | kfree(sta->ampdu_mlme.tid_rx[tid]); | |
1567 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
1568 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; | |
07db2183 | 1569 | |
d0709a65 | 1570 | rcu_read_unlock(); |
07db2183 RR |
1571 | } |
1572 | ||
eadc8d9e | 1573 | |
688b88a4 RR |
1574 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1575 | struct ieee80211_mgmt *mgmt, size_t len) | |
1576 | { | |
1577 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1578 | struct sta_info *sta; | |
1579 | u16 tid, params; | |
1580 | u16 initiator; | |
1581 | DECLARE_MAC_BUF(mac); | |
1582 | ||
d0709a65 JB |
1583 | rcu_read_lock(); |
1584 | ||
688b88a4 | 1585 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1586 | if (!sta) { |
1587 | rcu_read_unlock(); | |
688b88a4 | 1588 | return; |
d0709a65 | 1589 | } |
688b88a4 RR |
1590 | |
1591 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1592 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1593 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1594 | ||
1595 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1596 | if (net_ratelimit()) | |
d92684e6 RR |
1597 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1598 | print_mac(mac, mgmt->sa), | |
2e354ed7 | 1599 | initiator ? "initiator" : "recipient", tid, |
688b88a4 RR |
1600 | mgmt->u.action.u.delba.reason_code); |
1601 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1602 | ||
1603 | if (initiator == WLAN_BACK_INITIATOR) | |
1604 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1605 | WLAN_BACK_INITIATOR, 0); | |
d92684e6 | 1606 | else { /* WLAN_BACK_RECIPIENT */ |
07346f81 | 1607 | spin_lock_bh(&sta->lock); |
cee24a3e | 1608 | sta->ampdu_mlme.tid_state_tx[tid] = |
d92684e6 | 1609 | HT_AGG_STATE_OPERATIONAL; |
07346f81 | 1610 | spin_unlock_bh(&sta->lock); |
d92684e6 RR |
1611 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
1612 | WLAN_BACK_RECIPIENT); | |
1613 | } | |
d0709a65 | 1614 | rcu_read_unlock(); |
688b88a4 RR |
1615 | } |
1616 | ||
eadc8d9e RR |
1617 | /* |
1618 | * After sending add Block Ack request we activated a timer until | |
1619 | * add Block Ack response will arrive from the recipient. | |
1620 | * If this timer expires sta_addba_resp_timer_expired will be executed. | |
1621 | */ | |
1622 | void sta_addba_resp_timer_expired(unsigned long data) | |
1623 | { | |
1624 | /* not an elegant detour, but there is no choice as the timer passes | |
1625 | * only one argument, and both sta_info and TID are needed, so init | |
73651ee6 | 1626 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
eadc8d9e | 1627 | * array gives the sta through container_of */ |
70d251b2 | 1628 | u16 tid = *(u8 *)data; |
eadc8d9e RR |
1629 | struct sta_info *temp_sta = container_of((void *)data, |
1630 | struct sta_info, timer_to_tid[tid]); | |
1631 | ||
1632 | struct ieee80211_local *local = temp_sta->local; | |
1633 | struct ieee80211_hw *hw = &local->hw; | |
1634 | struct sta_info *sta; | |
1635 | u8 *state; | |
1636 | ||
d0709a65 JB |
1637 | rcu_read_lock(); |
1638 | ||
eadc8d9e | 1639 | sta = sta_info_get(local, temp_sta->addr); |
d0709a65 JB |
1640 | if (!sta) { |
1641 | rcu_read_unlock(); | |
eadc8d9e | 1642 | return; |
d0709a65 | 1643 | } |
eadc8d9e | 1644 | |
cee24a3e | 1645 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1646 | /* check if the TID waits for addBA response */ |
07346f81 | 1647 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1648 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1649 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1650 | *state = HT_AGG_STATE_IDLE; |
1651 | printk(KERN_DEBUG "timer expired on tid %d but we are not " | |
1652 | "expecting addBA response there", tid); | |
1653 | goto timer_expired_exit; | |
1654 | } | |
1655 | ||
1656 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); | |
1657 | ||
1658 | /* go through the state check in stop_BA_session */ | |
1659 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1660 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1661 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, |
1662 | WLAN_BACK_INITIATOR); | |
1663 | ||
1664 | timer_expired_exit: | |
d0709a65 | 1665 | rcu_read_unlock(); |
eadc8d9e RR |
1666 | } |
1667 | ||
07db2183 | 1668 | /* |
7b9d44cd RR |
1669 | * After accepting the AddBA Request we activated a timer, |
1670 | * resetting it after each frame that arrives from the originator. | |
07db2183 RR |
1671 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. |
1672 | */ | |
712590de | 1673 | static void sta_rx_agg_session_timer_expired(unsigned long data) |
07db2183 RR |
1674 | { |
1675 | /* not an elegant detour, but there is no choice as the timer passes | |
70d251b2 | 1676 | * only one argument, and various sta_info are needed here, so init |
73651ee6 | 1677 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
07db2183 RR |
1678 | * array gives the sta through container_of */ |
1679 | u8 *ptid = (u8 *)data; | |
1680 | u8 *timer_to_id = ptid - *ptid; | |
1681 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1682 | timer_to_tid[0]); | |
1683 | ||
1684 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); | |
d0709a65 JB |
1685 | ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, |
1686 | (u16)*ptid, WLAN_BACK_TIMER, | |
07db2183 RR |
1687 | WLAN_REASON_QSTA_TIMEOUT); |
1688 | } | |
1689 | ||
85249e5f RR |
1690 | void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr) |
1691 | { | |
1692 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1693 | int i; | |
1694 | ||
1695 | for (i = 0; i < STA_TID_NUM; i++) { | |
1696 | ieee80211_stop_tx_ba_session(&local->hw, addr, i, | |
1697 | WLAN_BACK_INITIATOR); | |
1698 | ieee80211_sta_stop_rx_ba_session(dev, addr, i, | |
1699 | WLAN_BACK_RECIPIENT, | |
1700 | WLAN_REASON_QSTA_LEAVE_QBSS); | |
1701 | } | |
1702 | } | |
07db2183 | 1703 | |
f0706e82 JB |
1704 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1705 | struct ieee80211_if_sta *ifsta, | |
1706 | struct ieee80211_mgmt *mgmt, | |
1707 | size_t len) | |
1708 | { | |
1709 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1710 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1711 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1712 | |
1713 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
51fb61e7 | 1714 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 1715 | printk(KERN_DEBUG "%s: authentication frame received from " |
0795af57 JP |
1716 | "%s, but not in authenticate state - ignored\n", |
1717 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1718 | return; |
1719 | } | |
1720 | ||
1721 | if (len < 24 + 6) { | |
1722 | printk(KERN_DEBUG "%s: too short (%zd) authentication frame " | |
0795af57 JP |
1723 | "received from %s - ignored\n", |
1724 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1725 | return; |
1726 | } | |
1727 | ||
51fb61e7 | 1728 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1729 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { |
1730 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1731 | "unknown AP (SA=%s BSSID=%s) - " |
1732 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1733 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1734 | return; |
1735 | } | |
1736 | ||
51fb61e7 | 1737 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1738 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) { |
1739 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1740 | "unknown BSSID (SA=%s BSSID=%s) - " |
1741 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1742 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1743 | return; |
1744 | } | |
1745 | ||
1746 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1747 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1748 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1749 | ||
0795af57 | 1750 | printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d " |
f0706e82 | 1751 | "transaction=%d status=%d)\n", |
0795af57 | 1752 | dev->name, print_mac(mac, mgmt->sa), auth_alg, |
f0706e82 JB |
1753 | auth_transaction, status_code); |
1754 | ||
51fb61e7 | 1755 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 JB |
1756 | /* IEEE 802.11 standard does not require authentication in IBSS |
1757 | * networks and most implementations do not seem to use it. | |
1758 | * However, try to reply to authentication attempts if someone | |
1759 | * has actually implemented this. | |
1760 | * TODO: Could implement shared key authentication. */ | |
1761 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) { | |
1762 | printk(KERN_DEBUG "%s: unexpected IBSS authentication " | |
1763 | "frame (alg=%d transaction=%d)\n", | |
1764 | dev->name, auth_alg, auth_transaction); | |
1765 | return; | |
1766 | } | |
1767 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); | |
1768 | } | |
1769 | ||
1770 | if (auth_alg != ifsta->auth_alg || | |
1771 | auth_transaction != ifsta->auth_transaction) { | |
1772 | printk(KERN_DEBUG "%s: unexpected authentication frame " | |
1773 | "(alg=%d transaction=%d)\n", | |
1774 | dev->name, auth_alg, auth_transaction); | |
1775 | return; | |
1776 | } | |
1777 | ||
1778 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1779 | printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d " | |
1780 | "code=%d)\n", dev->name, ifsta->auth_alg, status_code); | |
1781 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { | |
1782 | u8 algs[3]; | |
1783 | const int num_algs = ARRAY_SIZE(algs); | |
1784 | int i, pos; | |
1785 | algs[0] = algs[1] = algs[2] = 0xff; | |
1786 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1787 | algs[0] = WLAN_AUTH_OPEN; | |
1788 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1789 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1790 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1791 | algs[2] = WLAN_AUTH_LEAP; | |
1792 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1793 | pos = 0; | |
1794 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1795 | pos = 1; | |
1796 | else | |
1797 | pos = 2; | |
1798 | for (i = 0; i < num_algs; i++) { | |
1799 | pos++; | |
1800 | if (pos >= num_algs) | |
1801 | pos = 0; | |
1802 | if (algs[pos] == ifsta->auth_alg || | |
1803 | algs[pos] == 0xff) | |
1804 | continue; | |
1805 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1806 | !ieee80211_sta_wep_configured(dev)) | |
1807 | continue; | |
1808 | ifsta->auth_alg = algs[pos]; | |
1809 | printk(KERN_DEBUG "%s: set auth_alg=%d for " | |
1810 | "next try\n", | |
1811 | dev->name, ifsta->auth_alg); | |
1812 | break; | |
1813 | } | |
1814 | } | |
1815 | return; | |
1816 | } | |
1817 | ||
1818 | switch (ifsta->auth_alg) { | |
1819 | case WLAN_AUTH_OPEN: | |
1820 | case WLAN_AUTH_LEAP: | |
1821 | ieee80211_auth_completed(dev, ifsta); | |
1822 | break; | |
1823 | case WLAN_AUTH_SHARED_KEY: | |
1824 | if (ifsta->auth_transaction == 4) | |
1825 | ieee80211_auth_completed(dev, ifsta); | |
1826 | else | |
1827 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1828 | break; | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | ||
1833 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1834 | struct ieee80211_if_sta *ifsta, | |
1835 | struct ieee80211_mgmt *mgmt, | |
1836 | size_t len) | |
1837 | { | |
1838 | u16 reason_code; | |
0795af57 | 1839 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1840 | |
1841 | if (len < 24 + 2) { | |
1842 | printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame " | |
0795af57 JP |
1843 | "received from %s - ignored\n", |
1844 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1845 | return; |
1846 | } | |
1847 | ||
1848 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1849 | printk(KERN_DEBUG "%s: deauthentication frame received from " | |
0795af57 JP |
1850 | "unknown AP (SA=%s BSSID=%s) - " |
1851 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1852 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1853 | return; |
1854 | } | |
1855 | ||
1856 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1857 | ||
0795af57 | 1858 | printk(KERN_DEBUG "%s: RX deauthentication from %s" |
f0706e82 | 1859 | " (reason=%d)\n", |
0795af57 | 1860 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1861 | |
988c0f72 | 1862 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f0706e82 | 1863 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
f0706e82 JB |
1864 | |
1865 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1866 | ifsta->state == IEEE80211_ASSOCIATE || | |
1867 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1868 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1869 | mod_timer(&ifsta->timer, jiffies + | |
1870 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1871 | } | |
1872 | ||
1873 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1874 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1875 | } |
1876 | ||
1877 | ||
1878 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1879 | struct ieee80211_if_sta *ifsta, | |
1880 | struct ieee80211_mgmt *mgmt, | |
1881 | size_t len) | |
1882 | { | |
1883 | u16 reason_code; | |
0795af57 | 1884 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1885 | |
1886 | if (len < 24 + 2) { | |
1887 | printk(KERN_DEBUG "%s: too short (%zd) disassociation frame " | |
0795af57 JP |
1888 | "received from %s - ignored\n", |
1889 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1890 | return; |
1891 | } | |
1892 | ||
1893 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1894 | printk(KERN_DEBUG "%s: disassociation frame received from " | |
0795af57 JP |
1895 | "unknown AP (SA=%s BSSID=%s) - " |
1896 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1897 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1898 | return; |
1899 | } | |
1900 | ||
1901 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1902 | ||
0795af57 | 1903 | printk(KERN_DEBUG "%s: RX disassociation from %s" |
f0706e82 | 1904 | " (reason=%d)\n", |
0795af57 | 1905 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1906 | |
d6f2da5b | 1907 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
1908 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
1909 | ||
1910 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
1911 | ifsta->state = IEEE80211_ASSOCIATE; | |
1912 | mod_timer(&ifsta->timer, jiffies + | |
1913 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1914 | } | |
1915 | ||
1916 | ieee80211_set_disassoc(dev, ifsta, 0); | |
1917 | } | |
1918 | ||
1919 | ||
471b3efd | 1920 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1921 | struct ieee80211_if_sta *ifsta, |
1922 | struct ieee80211_mgmt *mgmt, | |
1923 | size_t len, | |
1924 | int reassoc) | |
1925 | { | |
471b3efd JB |
1926 | struct ieee80211_local *local = sdata->local; |
1927 | struct net_device *dev = sdata->dev; | |
8318d78a | 1928 | struct ieee80211_supported_band *sband; |
f0706e82 | 1929 | struct sta_info *sta; |
8318d78a | 1930 | u64 rates, basic_rates; |
f0706e82 JB |
1931 | u16 capab_info, status_code, aid; |
1932 | struct ieee802_11_elems elems; | |
471b3efd | 1933 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1934 | u8 *pos; |
1935 | int i, j; | |
0795af57 | 1936 | DECLARE_MAC_BUF(mac); |
8318d78a | 1937 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1938 | |
1939 | /* AssocResp and ReassocResp have identical structure, so process both | |
1940 | * of them in this function. */ | |
1941 | ||
1942 | if (ifsta->state != IEEE80211_ASSOCIATE) { | |
1943 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1944 | "%s, but not in associate state - ignored\n", |
1945 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1946 | return; |
1947 | } | |
1948 | ||
1949 | if (len < 24 + 6) { | |
1950 | printk(KERN_DEBUG "%s: too short (%zd) association frame " | |
0795af57 JP |
1951 | "received from %s - ignored\n", |
1952 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1953 | return; |
1954 | } | |
1955 | ||
1956 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1957 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1958 | "unknown AP (SA=%s BSSID=%s) - " |
1959 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1960 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1961 | return; |
1962 | } | |
1963 | ||
1964 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1965 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1966 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1967 | |
0795af57 | 1968 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1969 | "status=%d aid=%d)\n", |
0795af57 | 1970 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1971 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1972 | |
1973 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1974 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
1975 | dev->name, status_code); | |
8a69aa93 DD |
1976 | /* if this was a reassociation, ensure we try a "full" |
1977 | * association next time. This works around some broken APs | |
1978 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1979 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1980 | return; |
1981 | } | |
1982 | ||
1dd84aa2 JB |
1983 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1984 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
1985 | "set\n", dev->name, aid); | |
1986 | aid &= ~(BIT(15) | BIT(14)); | |
1987 | ||
f0706e82 | 1988 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1989 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1990 | |
1991 | if (!elems.supp_rates) { | |
1992 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
1993 | dev->name); | |
1994 | return; | |
1995 | } | |
1996 | ||
1997 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
1998 | ifsta->aid = aid; | |
1999 | ifsta->ap_capab = capab_info; | |
2000 | ||
2001 | kfree(ifsta->assocresp_ies); | |
2002 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 2003 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
2004 | if (ifsta->assocresp_ies) |
2005 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
2006 | ||
d0709a65 JB |
2007 | rcu_read_lock(); |
2008 | ||
f0706e82 JB |
2009 | /* Add STA entry for the AP */ |
2010 | sta = sta_info_get(local, ifsta->bssid); | |
2011 | if (!sta) { | |
2012 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 2013 | int err; |
d0709a65 | 2014 | |
73651ee6 JB |
2015 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
2016 | if (!sta) { | |
2017 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
2018 | " the AP\n", dev->name); | |
d0709a65 | 2019 | rcu_read_unlock(); |
f0706e82 JB |
2020 | return; |
2021 | } | |
65c107ab | 2022 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 2023 | local->hw.conf.channel->center_freq, |
cffdd30d | 2024 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 | 2025 | if (bss) { |
f0706e82 | 2026 | sta->last_signal = bss->signal; |
566bfe5a | 2027 | sta->last_qual = bss->qual; |
f0706e82 JB |
2028 | sta->last_noise = bss->noise; |
2029 | ieee80211_rx_bss_put(dev, bss); | |
2030 | } | |
73651ee6 JB |
2031 | |
2032 | err = sta_info_insert(sta); | |
2033 | if (err) { | |
2034 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
2035 | " the AP (error %d)\n", dev->name, err); | |
73651ee6 JB |
2036 | rcu_read_unlock(); |
2037 | return; | |
2038 | } | |
f0706e82 JB |
2039 | } |
2040 | ||
73651ee6 JB |
2041 | /* |
2042 | * FIXME: Do we really need to update the sta_info's information here? | |
2043 | * We already know about the AP (we found it in our list) so it | |
2044 | * should already be filled with the right info, no? | |
2045 | * As is stands, all this is racy because typically we assume | |
2046 | * the information that is filled in here (except flags) doesn't | |
2047 | * change while a STA structure is alive. As such, it should move | |
2048 | * to between the sta_info_alloc() and sta_info_insert() above. | |
2049 | */ | |
2050 | ||
07346f81 JB |
2051 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
2052 | WLAN_STA_AUTHORIZED); | |
f0706e82 JB |
2053 | |
2054 | rates = 0; | |
8318d78a JB |
2055 | basic_rates = 0; |
2056 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2057 | ||
f0706e82 JB |
2058 | for (i = 0; i < elems.supp_rates_len; i++) { |
2059 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2060 | |
2061 | if (rate > 110) | |
2062 | have_higher_than_11mbit = true; | |
2063 | ||
2064 | for (j = 0; j < sband->n_bitrates; j++) { | |
2065 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2066 | rates |= BIT(j); |
8318d78a JB |
2067 | if (elems.supp_rates[i] & 0x80) |
2068 | basic_rates |= BIT(j); | |
2069 | } | |
f0706e82 | 2070 | } |
8318d78a | 2071 | |
f0706e82 JB |
2072 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
2073 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2074 | |
2075 | if (rate > 110) | |
2076 | have_higher_than_11mbit = true; | |
2077 | ||
2078 | for (j = 0; j < sband->n_bitrates; j++) { | |
2079 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2080 | rates |= BIT(j); |
8318d78a JB |
2081 | if (elems.ext_supp_rates[i] & 0x80) |
2082 | basic_rates |= BIT(j); | |
2083 | } | |
f0706e82 | 2084 | } |
8318d78a JB |
2085 | |
2086 | sta->supp_rates[local->hw.conf.channel->band] = rates; | |
2087 | sdata->basic_rates = basic_rates; | |
2088 | ||
2089 | /* cf. IEEE 802.11 9.2.12 */ | |
2090 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
2091 | have_higher_than_11mbit) | |
2092 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
2093 | else | |
2094 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 2095 | |
3434fbd3 JB |
2096 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
2097 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
d3c990fb | 2098 | struct ieee80211_ht_bss_info bss_info; |
d3c990fb RR |
2099 | ieee80211_ht_cap_ie_to_ht_info( |
2100 | (struct ieee80211_ht_cap *) | |
2101 | elems.ht_cap_elem, &sta->ht_info); | |
2102 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2103 | (struct ieee80211_ht_addt_info *) | |
2104 | elems.ht_info_elem, &bss_info); | |
38668c05 | 2105 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); |
d3c990fb RR |
2106 | } |
2107 | ||
f0706e82 JB |
2108 | rate_control_rate_init(sta, local); |
2109 | ||
3434fbd3 | 2110 | if (elems.wmm_param) { |
07346f81 | 2111 | set_sta_flags(sta, WLAN_STA_WME); |
e5f98f2d | 2112 | rcu_read_unlock(); |
f0706e82 JB |
2113 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2114 | elems.wmm_param_len); | |
e5f98f2d JB |
2115 | } else |
2116 | rcu_read_unlock(); | |
f0706e82 | 2117 | |
21c0cbe7 TW |
2118 | /* set AID and assoc capability, |
2119 | * ieee80211_set_associated() will tell the driver */ | |
8318d78a | 2120 | bss_conf->aid = aid; |
21c0cbe7 | 2121 | bss_conf->assoc_capability = capab_info; |
8318d78a | 2122 | ieee80211_set_associated(dev, ifsta, 1); |
f0706e82 | 2123 | |
f0706e82 JB |
2124 | ieee80211_associated(dev, ifsta); |
2125 | } | |
2126 | ||
2127 | ||
2128 | /* Caller must hold local->sta_bss_lock */ | |
2129 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
2130 | struct ieee80211_sta_bss *bss) | |
2131 | { | |
2132 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f709fc69 | 2133 | u8 hash_idx; |
902acc78 JB |
2134 | |
2135 | if (bss_mesh_cfg(bss)) | |
2136 | hash_idx = mesh_id_hash(bss_mesh_id(bss), | |
2137 | bss_mesh_id_len(bss)); | |
f709fc69 | 2138 | else |
f709fc69 | 2139 | hash_idx = STA_HASH(bss->bssid); |
902acc78 | 2140 | |
f709fc69 LCC |
2141 | bss->hnext = local->sta_bss_hash[hash_idx]; |
2142 | local->sta_bss_hash[hash_idx] = bss; | |
f0706e82 JB |
2143 | } |
2144 | ||
2145 | ||
2146 | /* Caller must hold local->sta_bss_lock */ | |
2147 | static void __ieee80211_rx_bss_hash_del(struct net_device *dev, | |
2148 | struct ieee80211_sta_bss *bss) | |
2149 | { | |
2150 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2151 | struct ieee80211_sta_bss *b, *prev = NULL; | |
2152 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
2153 | while (b) { | |
2154 | if (b == bss) { | |
2155 | if (!prev) | |
2156 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
2157 | bss->hnext; | |
2158 | else | |
2159 | prev->hnext = bss->hnext; | |
2160 | break; | |
2161 | } | |
2162 | prev = b; | |
2163 | b = b->hnext; | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | ||
2168 | static struct ieee80211_sta_bss * | |
8318d78a | 2169 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2170 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2171 | { |
2172 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2173 | struct ieee80211_sta_bss *bss; | |
2174 | ||
dd00cc48 | 2175 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
2176 | if (!bss) |
2177 | return NULL; | |
f0706e82 JB |
2178 | atomic_inc(&bss->users); |
2179 | atomic_inc(&bss->users); | |
2180 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
8318d78a | 2181 | bss->freq = freq; |
cffdd30d JL |
2182 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
2183 | memcpy(bss->ssid, ssid, ssid_len); | |
2184 | bss->ssid_len = ssid_len; | |
2185 | } | |
f0706e82 JB |
2186 | |
2187 | spin_lock_bh(&local->sta_bss_lock); | |
2188 | /* TODO: order by RSSI? */ | |
2189 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2190 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2191 | spin_unlock_bh(&local->sta_bss_lock); | |
2192 | return bss; | |
2193 | } | |
2194 | ||
f0706e82 | 2195 | static struct ieee80211_sta_bss * |
8318d78a | 2196 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2197 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2198 | { |
2199 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2200 | struct ieee80211_sta_bss *bss; | |
2201 | ||
2202 | spin_lock_bh(&local->sta_bss_lock); | |
2203 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
2204 | while (bss) { | |
902acc78 JB |
2205 | if (!bss_mesh_cfg(bss) && |
2206 | !memcmp(bss->bssid, bssid, ETH_ALEN) && | |
8318d78a | 2207 | bss->freq == freq && |
cffdd30d JL |
2208 | bss->ssid_len == ssid_len && |
2209 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
2210 | atomic_inc(&bss->users); |
2211 | break; | |
2212 | } | |
2213 | bss = bss->hnext; | |
2214 | } | |
2215 | spin_unlock_bh(&local->sta_bss_lock); | |
2216 | return bss; | |
2217 | } | |
2218 | ||
f709fc69 LCC |
2219 | #ifdef CONFIG_MAC80211_MESH |
2220 | static struct ieee80211_sta_bss * | |
2221 | ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
2222 | u8 *mesh_cfg, int freq) | |
2223 | { | |
2224 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2225 | struct ieee80211_sta_bss *bss; | |
2226 | ||
2227 | spin_lock_bh(&local->sta_bss_lock); | |
2228 | bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; | |
2229 | while (bss) { | |
902acc78 JB |
2230 | if (bss_mesh_cfg(bss) && |
2231 | !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && | |
f709fc69 LCC |
2232 | bss->freq == freq && |
2233 | mesh_id_len == bss->mesh_id_len && | |
2234 | (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, | |
2235 | mesh_id_len))) { | |
2236 | atomic_inc(&bss->users); | |
2237 | break; | |
2238 | } | |
2239 | bss = bss->hnext; | |
2240 | } | |
2241 | spin_unlock_bh(&local->sta_bss_lock); | |
2242 | return bss; | |
2243 | } | |
2244 | ||
2245 | static struct ieee80211_sta_bss * | |
2246 | ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
05e5e883 | 2247 | u8 *mesh_cfg, int mesh_config_len, int freq) |
f709fc69 LCC |
2248 | { |
2249 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2250 | struct ieee80211_sta_bss *bss; | |
2251 | ||
05e5e883 LCC |
2252 | if (mesh_config_len != MESH_CFG_LEN) |
2253 | return NULL; | |
2254 | ||
f709fc69 LCC |
2255 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
2256 | if (!bss) | |
2257 | return NULL; | |
2258 | ||
24736701 | 2259 | bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); |
f709fc69 LCC |
2260 | if (!bss->mesh_cfg) { |
2261 | kfree(bss); | |
2262 | return NULL; | |
2263 | } | |
2264 | ||
2265 | if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { | |
2266 | bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); | |
2267 | if (!bss->mesh_id) { | |
2268 | kfree(bss->mesh_cfg); | |
2269 | kfree(bss); | |
2270 | return NULL; | |
2271 | } | |
2272 | memcpy(bss->mesh_id, mesh_id, mesh_id_len); | |
2273 | } | |
2274 | ||
2275 | atomic_inc(&bss->users); | |
2276 | atomic_inc(&bss->users); | |
24736701 | 2277 | memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); |
f709fc69 LCC |
2278 | bss->mesh_id_len = mesh_id_len; |
2279 | bss->freq = freq; | |
2280 | spin_lock_bh(&local->sta_bss_lock); | |
2281 | /* TODO: order by RSSI? */ | |
2282 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2283 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2284 | spin_unlock_bh(&local->sta_bss_lock); | |
2285 | return bss; | |
2286 | } | |
2287 | #endif | |
f0706e82 JB |
2288 | |
2289 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
2290 | { | |
2291 | kfree(bss->wpa_ie); | |
2292 | kfree(bss->rsn_ie); | |
2293 | kfree(bss->wmm_ie); | |
c7153508 | 2294 | kfree(bss->ht_ie); |
9306102e | 2295 | kfree(bss->ht_add_ie); |
902acc78 JB |
2296 | kfree(bss_mesh_id(bss)); |
2297 | kfree(bss_mesh_cfg(bss)); | |
f0706e82 JB |
2298 | kfree(bss); |
2299 | } | |
2300 | ||
2301 | ||
2302 | static void ieee80211_rx_bss_put(struct net_device *dev, | |
2303 | struct ieee80211_sta_bss *bss) | |
2304 | { | |
2305 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1ebebea8 PE |
2306 | |
2307 | local_bh_disable(); | |
2308 | if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) { | |
2309 | local_bh_enable(); | |
f0706e82 | 2310 | return; |
1ebebea8 | 2311 | } |
f0706e82 | 2312 | |
f0706e82 JB |
2313 | __ieee80211_rx_bss_hash_del(dev, bss); |
2314 | list_del(&bss->list); | |
2315 | spin_unlock_bh(&local->sta_bss_lock); | |
2316 | ieee80211_rx_bss_free(bss); | |
2317 | } | |
2318 | ||
2319 | ||
2320 | void ieee80211_rx_bss_list_init(struct net_device *dev) | |
2321 | { | |
2322 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2323 | spin_lock_init(&local->sta_bss_lock); | |
2324 | INIT_LIST_HEAD(&local->sta_bss_list); | |
2325 | } | |
2326 | ||
2327 | ||
2328 | void ieee80211_rx_bss_list_deinit(struct net_device *dev) | |
2329 | { | |
2330 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2331 | struct ieee80211_sta_bss *bss, *tmp; | |
2332 | ||
2333 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
2334 | ieee80211_rx_bss_put(dev, bss); | |
2335 | } | |
2336 | ||
2337 | ||
a607268a BR |
2338 | static int ieee80211_sta_join_ibss(struct net_device *dev, |
2339 | struct ieee80211_if_sta *ifsta, | |
2340 | struct ieee80211_sta_bss *bss) | |
2341 | { | |
2342 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2343 | int res, rates, i, j; | |
2344 | struct sk_buff *skb; | |
2345 | struct ieee80211_mgmt *mgmt; | |
e039fa4a | 2346 | struct ieee80211_tx_info *control; |
a607268a BR |
2347 | struct rate_selection ratesel; |
2348 | u8 *pos; | |
2349 | struct ieee80211_sub_if_data *sdata; | |
2350 | struct ieee80211_supported_band *sband; | |
507b06d0 | 2351 | union iwreq_data wrqu; |
a607268a BR |
2352 | |
2353 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2354 | ||
9dd6aed0 JB |
2355 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
2356 | ||
a607268a | 2357 | /* Remove possible STA entries from other IBSS networks. */ |
dc6676b7 | 2358 | sta_info_flush_delayed(sdata); |
a607268a BR |
2359 | |
2360 | if (local->ops->reset_tsf) { | |
2361 | /* Reset own TSF to allow time synchronization work. */ | |
2362 | local->ops->reset_tsf(local_to_hw(local)); | |
2363 | } | |
2364 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
2365 | res = ieee80211_if_config(dev); | |
2366 | if (res) | |
2367 | return res; | |
2368 | ||
2369 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2370 | ||
a607268a BR |
2371 | sdata->drop_unencrypted = bss->capability & |
2372 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2373 | ||
be038b37 | 2374 | res = ieee80211_set_freq(dev, bss->freq); |
a607268a | 2375 | |
be038b37 AK |
2376 | if (res) |
2377 | return res; | |
a607268a BR |
2378 | |
2379 | /* Set beacon template */ | |
2380 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); | |
2381 | do { | |
2382 | if (!skb) | |
2383 | break; | |
2384 | ||
2385 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2386 | ||
2387 | mgmt = (struct ieee80211_mgmt *) | |
2388 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2389 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2390 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2391 | IEEE80211_STYPE_BEACON); | |
2392 | memset(mgmt->da, 0xff, ETH_ALEN); | |
2393 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2394 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2395 | mgmt->u.beacon.beacon_int = | |
2396 | cpu_to_le16(local->hw.conf.beacon_int); | |
2397 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); | |
2398 | ||
2399 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2400 | *pos++ = WLAN_EID_SSID; | |
2401 | *pos++ = ifsta->ssid_len; | |
2402 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2403 | ||
2404 | rates = bss->supp_rates_len; | |
2405 | if (rates > 8) | |
2406 | rates = 8; | |
2407 | pos = skb_put(skb, 2 + rates); | |
2408 | *pos++ = WLAN_EID_SUPP_RATES; | |
2409 | *pos++ = rates; | |
2410 | memcpy(pos, bss->supp_rates, rates); | |
2411 | ||
2412 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
2413 | pos = skb_put(skb, 2 + 1); | |
2414 | *pos++ = WLAN_EID_DS_PARAMS; | |
2415 | *pos++ = 1; | |
2416 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
2417 | } | |
2418 | ||
2419 | pos = skb_put(skb, 2 + 2); | |
2420 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2421 | *pos++ = 2; | |
2422 | /* FIX: set ATIM window based on scan results */ | |
2423 | *pos++ = 0; | |
2424 | *pos++ = 0; | |
2425 | ||
2426 | if (bss->supp_rates_len > 8) { | |
2427 | rates = bss->supp_rates_len - 8; | |
2428 | pos = skb_put(skb, 2 + rates); | |
2429 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2430 | *pos++ = rates; | |
2431 | memcpy(pos, &bss->supp_rates[8], rates); | |
2432 | } | |
2433 | ||
e039fa4a JB |
2434 | control = IEEE80211_SKB_CB(skb); |
2435 | ||
a607268a | 2436 | rate_control_get_rate(dev, sband, skb, &ratesel); |
2e92e6f2 | 2437 | if (ratesel.rate_idx < 0) { |
a607268a BR |
2438 | printk(KERN_DEBUG "%s: Failed to determine TX rate " |
2439 | "for IBSS beacon\n", dev->name); | |
2440 | break; | |
2441 | } | |
e039fa4a JB |
2442 | control->control.vif = &sdata->vif; |
2443 | control->tx_rate_idx = ratesel.rate_idx; | |
a607268a | 2444 | if (sdata->bss_conf.use_short_preamble && |
2e92e6f2 | 2445 | sband->bitrates[ratesel.rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE) |
e039fa4a JB |
2446 | control->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE; |
2447 | control->antenna_sel_tx = local->hw.conf.antenna_sel_tx; | |
2448 | control->flags |= IEEE80211_TX_CTL_NO_ACK; | |
2449 | control->control.retry_limit = 1; | |
a607268a BR |
2450 | |
2451 | ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); | |
2452 | if (ifsta->probe_resp) { | |
2453 | mgmt = (struct ieee80211_mgmt *) | |
2454 | ifsta->probe_resp->data; | |
2455 | mgmt->frame_control = | |
2456 | IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2457 | IEEE80211_STYPE_PROBE_RESP); | |
2458 | } else { | |
2459 | printk(KERN_DEBUG "%s: Could not allocate ProbeResp " | |
2460 | "template for IBSS\n", dev->name); | |
2461 | } | |
2462 | ||
2463 | if (local->ops->beacon_update && | |
e039fa4a | 2464 | local->ops->beacon_update(local_to_hw(local), skb) == 0) { |
a607268a BR |
2465 | printk(KERN_DEBUG "%s: Configured IBSS beacon " |
2466 | "template\n", dev->name); | |
2467 | skb = NULL; | |
2468 | } | |
2469 | ||
2470 | rates = 0; | |
2471 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2472 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2473 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
2474 | for (j = 0; j < sband->n_bitrates; j++) | |
2475 | if (sband->bitrates[j].bitrate == bitrate) | |
2476 | rates |= BIT(j); | |
2477 | } | |
2478 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; | |
e2839d8f VK |
2479 | |
2480 | ieee80211_sta_def_wmm_params(dev, bss, 1); | |
a607268a BR |
2481 | } while (0); |
2482 | ||
2483 | if (skb) { | |
2484 | printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " | |
2485 | "template\n", dev->name); | |
2486 | dev_kfree_skb(skb); | |
2487 | } | |
2488 | ||
2489 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2490 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2491 | ||
507b06d0 DW |
2492 | memset(&wrqu, 0, sizeof(wrqu)); |
2493 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
2494 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
a607268a BR |
2495 | |
2496 | return res; | |
2497 | } | |
2498 | ||
f709fc69 LCC |
2499 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
2500 | struct ieee802_11_elems *elems, | |
2501 | enum ieee80211_band band) | |
2502 | { | |
2503 | struct ieee80211_supported_band *sband; | |
2504 | struct ieee80211_rate *bitrates; | |
2505 | size_t num_rates; | |
2506 | u64 supp_rates; | |
2507 | int i, j; | |
2508 | sband = local->hw.wiphy->bands[band]; | |
2509 | ||
2510 | if (!sband) { | |
2511 | WARN_ON(1); | |
2512 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2513 | } | |
2514 | ||
2515 | bitrates = sband->bitrates; | |
2516 | num_rates = sband->n_bitrates; | |
2517 | supp_rates = 0; | |
2518 | for (i = 0; i < elems->supp_rates_len + | |
2519 | elems->ext_supp_rates_len; i++) { | |
2520 | u8 rate = 0; | |
2521 | int own_rate; | |
2522 | if (i < elems->supp_rates_len) | |
2523 | rate = elems->supp_rates[i]; | |
2524 | else if (elems->ext_supp_rates) | |
2525 | rate = elems->ext_supp_rates | |
2526 | [i - elems->supp_rates_len]; | |
2527 | own_rate = 5 * (rate & 0x7f); | |
2528 | for (j = 0; j < num_rates; j++) | |
2529 | if (bitrates[j].bitrate == own_rate) | |
2530 | supp_rates |= BIT(j); | |
2531 | } | |
2532 | return supp_rates; | |
2533 | } | |
2534 | ||
a607268a | 2535 | |
f0706e82 JB |
2536 | static void ieee80211_rx_bss_info(struct net_device *dev, |
2537 | struct ieee80211_mgmt *mgmt, | |
2538 | size_t len, | |
2539 | struct ieee80211_rx_status *rx_status, | |
2540 | int beacon) | |
2541 | { | |
2542 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2543 | struct ieee802_11_elems elems; | |
2544 | size_t baselen; | |
8318d78a | 2545 | int freq, clen; |
f0706e82 JB |
2546 | struct ieee80211_sta_bss *bss; |
2547 | struct sta_info *sta; | |
2548 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
9d9bf77d | 2549 | u64 beacon_timestamp, rx_timestamp; |
fab7d4a2 | 2550 | struct ieee80211_channel *channel; |
0795af57 JP |
2551 | DECLARE_MAC_BUF(mac); |
2552 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2553 | |
2554 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
2555 | return; /* ignore ProbeResp to foreign address */ | |
2556 | ||
2557 | #if 0 | |
0795af57 | 2558 | printk(KERN_DEBUG "%s: RX %s from %s to %s\n", |
f0706e82 | 2559 | dev->name, beacon ? "Beacon" : "Probe Response", |
0795af57 | 2560 | print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da)); |
f0706e82 JB |
2561 | #endif |
2562 | ||
2563 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2564 | if (baselen > len) | |
2565 | return; | |
2566 | ||
9d9bf77d | 2567 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
67a4cce4 | 2568 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2569 | |
902acc78 JB |
2570 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id && |
2571 | elems.mesh_config && mesh_matches_local(&elems, dev)) { | |
2572 | u64 rates = ieee80211_sta_get_rates(local, &elems, | |
2573 | rx_status->band); | |
2574 | ||
2575 | mesh_neighbour_update(mgmt->sa, rates, dev, | |
2576 | mesh_peer_accepts_plinks(&elems, dev)); | |
2577 | } | |
f709fc69 | 2578 | |
d0709a65 JB |
2579 | rcu_read_lock(); |
2580 | ||
51fb61e7 | 2581 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && |
f0706e82 JB |
2582 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
2583 | (sta = sta_info_get(local, mgmt->sa))) { | |
f709fc69 LCC |
2584 | u64 prev_rates; |
2585 | u64 supp_rates = ieee80211_sta_get_rates(local, &elems, | |
2586 | rx_status->band); | |
f0706e82 | 2587 | |
8318d78a JB |
2588 | prev_rates = sta->supp_rates[rx_status->band]; |
2589 | sta->supp_rates[rx_status->band] &= supp_rates; | |
2590 | if (sta->supp_rates[rx_status->band] == 0) { | |
f0706e82 JB |
2591 | /* No matching rates - this should not really happen. |
2592 | * Make sure that at least one rate is marked | |
2593 | * supported to avoid issues with TX rate ctrl. */ | |
8318d78a JB |
2594 | sta->supp_rates[rx_status->band] = |
2595 | sdata->u.sta.supp_rates_bits[rx_status->band]; | |
f0706e82 | 2596 | } |
8318d78a | 2597 | if (sta->supp_rates[rx_status->band] != prev_rates) { |
f0706e82 | 2598 | printk(KERN_DEBUG "%s: updated supp_rates set for " |
8318d78a JB |
2599 | "%s based on beacon info (0x%llx & 0x%llx -> " |
2600 | "0x%llx)\n", | |
2601 | dev->name, print_mac(mac, sta->addr), | |
2602 | (unsigned long long) prev_rates, | |
2603 | (unsigned long long) supp_rates, | |
2604 | (unsigned long long) sta->supp_rates[rx_status->band]); | |
f0706e82 | 2605 | } |
f0706e82 JB |
2606 | } |
2607 | ||
d0709a65 JB |
2608 | rcu_read_unlock(); |
2609 | ||
f0706e82 | 2610 | if (elems.ds_params && elems.ds_params_len == 1) |
8318d78a | 2611 | freq = ieee80211_channel_to_frequency(elems.ds_params[0]); |
f0706e82 | 2612 | else |
8318d78a | 2613 | freq = rx_status->freq; |
f0706e82 | 2614 | |
fab7d4a2 JB |
2615 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
2616 | ||
2617 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2618 | return; | |
2619 | ||
f709fc69 LCC |
2620 | #ifdef CONFIG_MAC80211_MESH |
2621 | if (elems.mesh_config) | |
2622 | bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id, | |
2623 | elems.mesh_id_len, elems.mesh_config, freq); | |
2624 | else | |
2625 | #endif | |
2626 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, | |
cffdd30d | 2627 | elems.ssid, elems.ssid_len); |
f709fc69 LCC |
2628 | if (!bss) { |
2629 | #ifdef CONFIG_MAC80211_MESH | |
2630 | if (elems.mesh_config) | |
2631 | bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id, | |
05e5e883 LCC |
2632 | elems.mesh_id_len, elems.mesh_config, |
2633 | elems.mesh_config_len, freq); | |
f709fc69 LCC |
2634 | else |
2635 | #endif | |
2636 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, | |
2637 | elems.ssid, elems.ssid_len); | |
f0706e82 JB |
2638 | if (!bss) |
2639 | return; | |
2640 | } else { | |
2641 | #if 0 | |
2642 | /* TODO: order by RSSI? */ | |
2643 | spin_lock_bh(&local->sta_bss_lock); | |
2644 | list_move_tail(&bss->list, &local->sta_bss_list); | |
2645 | spin_unlock_bh(&local->sta_bss_lock); | |
2646 | #endif | |
2647 | } | |
2648 | ||
5628221c DD |
2649 | /* save the ERP value so that it is available at association time */ |
2650 | if (elems.erp_info && elems.erp_info_len >= 1) { | |
2651 | bss->erp_value = elems.erp_info[0]; | |
2652 | bss->has_erp_value = 1; | |
2653 | } | |
2654 | ||
30b89b0f JB |
2655 | if (elems.ht_cap_elem && |
2656 | (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || | |
2657 | memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { | |
2658 | kfree(bss->ht_ie); | |
2659 | bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); | |
2660 | if (bss->ht_ie) { | |
2661 | memcpy(bss->ht_ie, elems.ht_cap_elem - 2, | |
2662 | elems.ht_cap_elem_len + 2); | |
2663 | bss->ht_ie_len = elems.ht_cap_elem_len + 2; | |
2664 | } else | |
2665 | bss->ht_ie_len = 0; | |
2666 | } else if (!elems.ht_cap_elem && bss->ht_ie) { | |
2667 | kfree(bss->ht_ie); | |
2668 | bss->ht_ie = NULL; | |
2669 | bss->ht_ie_len = 0; | |
2670 | } | |
2671 | ||
9306102e EG |
2672 | if (elems.ht_info_elem && |
2673 | (!bss->ht_add_ie || | |
2674 | bss->ht_add_ie_len != elems.ht_info_elem_len || | |
2675 | memcmp(bss->ht_add_ie, elems.ht_info_elem, | |
2676 | elems.ht_info_elem_len))) { | |
2677 | kfree(bss->ht_add_ie); | |
2678 | bss->ht_add_ie = | |
2679 | kmalloc(elems.ht_info_elem_len + 2, GFP_ATOMIC); | |
2680 | if (bss->ht_add_ie) { | |
2681 | memcpy(bss->ht_add_ie, elems.ht_info_elem - 2, | |
2682 | elems.ht_info_elem_len + 2); | |
2683 | bss->ht_add_ie_len = elems.ht_info_elem_len + 2; | |
2684 | } else | |
2685 | bss->ht_add_ie_len = 0; | |
2686 | } else if (!elems.ht_info_elem && bss->ht_add_ie) { | |
2687 | kfree(bss->ht_add_ie); | |
2688 | bss->ht_add_ie = NULL; | |
2689 | bss->ht_add_ie_len = 0; | |
2690 | } | |
2691 | ||
f0706e82 JB |
2692 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
2693 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 JB |
2694 | |
2695 | bss->supp_rates_len = 0; | |
2696 | if (elems.supp_rates) { | |
2697 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2698 | if (clen > elems.supp_rates_len) | |
2699 | clen = elems.supp_rates_len; | |
2700 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates, | |
2701 | clen); | |
2702 | bss->supp_rates_len += clen; | |
2703 | } | |
2704 | if (elems.ext_supp_rates) { | |
2705 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2706 | if (clen > elems.ext_supp_rates_len) | |
2707 | clen = elems.ext_supp_rates_len; | |
2708 | memcpy(&bss->supp_rates[bss->supp_rates_len], | |
2709 | elems.ext_supp_rates, clen); | |
2710 | bss->supp_rates_len += clen; | |
2711 | } | |
2712 | ||
30b89b0f JB |
2713 | bss->band = rx_status->band; |
2714 | ||
2715 | bss->timestamp = beacon_timestamp; | |
2716 | bss->last_update = jiffies; | |
30b89b0f JB |
2717 | bss->signal = rx_status->signal; |
2718 | bss->noise = rx_status->noise; | |
566bfe5a | 2719 | bss->qual = rx_status->qual; |
30b89b0f JB |
2720 | if (!beacon && !bss->probe_resp) |
2721 | bss->probe_resp = true; | |
2722 | ||
2723 | /* | |
2724 | * In STA mode, the remaining parameters should not be overridden | |
2725 | * by beacons because they're not necessarily accurate there. | |
2726 | */ | |
2727 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2728 | bss->probe_resp && beacon) { | |
2729 | ieee80211_rx_bss_put(dev, bss); | |
2730 | return; | |
2731 | } | |
2732 | ||
f0706e82 JB |
2733 | if (elems.wpa && |
2734 | (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || | |
2735 | memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { | |
2736 | kfree(bss->wpa_ie); | |
2737 | bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC); | |
2738 | if (bss->wpa_ie) { | |
2739 | memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2); | |
2740 | bss->wpa_ie_len = elems.wpa_len + 2; | |
2741 | } else | |
2742 | bss->wpa_ie_len = 0; | |
2743 | } else if (!elems.wpa && bss->wpa_ie) { | |
2744 | kfree(bss->wpa_ie); | |
2745 | bss->wpa_ie = NULL; | |
2746 | bss->wpa_ie_len = 0; | |
2747 | } | |
2748 | ||
2749 | if (elems.rsn && | |
2750 | (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len || | |
2751 | memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) { | |
2752 | kfree(bss->rsn_ie); | |
2753 | bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC); | |
2754 | if (bss->rsn_ie) { | |
2755 | memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2); | |
2756 | bss->rsn_ie_len = elems.rsn_len + 2; | |
2757 | } else | |
2758 | bss->rsn_ie_len = 0; | |
2759 | } else if (!elems.rsn && bss->rsn_ie) { | |
2760 | kfree(bss->rsn_ie); | |
2761 | bss->rsn_ie = NULL; | |
2762 | bss->rsn_ie_len = 0; | |
2763 | } | |
2764 | ||
30b89b0f JB |
2765 | /* |
2766 | * Cf. | |
2767 | * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC | |
2768 | * | |
2769 | * quoting: | |
2770 | * | |
2771 | * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia | |
2772 | * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi | |
2773 | * Alliance (September 1, 2004) is incorporated by reference herein. | |
2774 | * The inclusion of the WMM Parameters in probe responses and | |
2775 | * association responses is mandatory for WMM enabled networks. The | |
2776 | * inclusion of the WMM Parameters in beacons, however, is optional. | |
2777 | */ | |
2778 | ||
f0706e82 JB |
2779 | if (elems.wmm_param && |
2780 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || | |
2781 | memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { | |
2782 | kfree(bss->wmm_ie); | |
2783 | bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC); | |
2784 | if (bss->wmm_ie) { | |
2785 | memcpy(bss->wmm_ie, elems.wmm_param - 2, | |
2786 | elems.wmm_param_len + 2); | |
2787 | bss->wmm_ie_len = elems.wmm_param_len + 2; | |
2788 | } else | |
2789 | bss->wmm_ie_len = 0; | |
a46f025d AK |
2790 | } else if (elems.wmm_info && |
2791 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_info_len || | |
2792 | memcmp(bss->wmm_ie, elems.wmm_info, elems.wmm_info_len))) { | |
2793 | /* As for certain AP's Fifth bit is not set in WMM IE in | |
2794 | * beacon frames.So while parsing the beacon frame the | |
2795 | * wmm_info structure is used instead of wmm_param. | |
2796 | * wmm_info structure was never used to set bss->wmm_ie. | |
2797 | * This code fixes this problem by copying the WME | |
2798 | * information from wmm_info to bss->wmm_ie and enabling | |
2799 | * n-band association. | |
2800 | */ | |
2801 | kfree(bss->wmm_ie); | |
2802 | bss->wmm_ie = kmalloc(elems.wmm_info_len + 2, GFP_ATOMIC); | |
2803 | if (bss->wmm_ie) { | |
2804 | memcpy(bss->wmm_ie, elems.wmm_info - 2, | |
2805 | elems.wmm_info_len + 2); | |
2806 | bss->wmm_ie_len = elems.wmm_info_len + 2; | |
2807 | } else | |
2808 | bss->wmm_ie_len = 0; | |
2809 | } else if (!elems.wmm_param && !elems.wmm_info && bss->wmm_ie) { | |
f0706e82 JB |
2810 | kfree(bss->wmm_ie); |
2811 | bss->wmm_ie = NULL; | |
2812 | bss->wmm_ie_len = 0; | |
2813 | } | |
9d9bf77d BR |
2814 | |
2815 | /* check if we need to merge IBSS */ | |
2816 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
2817 | !local->sta_sw_scanning && !local->sta_hw_scanning && | |
fba4a1e6 | 2818 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d BR |
2819 | bss->freq == local->oper_channel->center_freq && |
2820 | elems.ssid_len == sdata->u.sta.ssid_len && | |
2821 | memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) { | |
2822 | if (rx_status->flag & RX_FLAG_TSFT) { | |
2823 | /* in order for correct IBSS merging we need mactime | |
2824 | * | |
2825 | * since mactime is defined as the time the first data | |
2826 | * symbol of the frame hits the PHY, and the timestamp | |
2827 | * of the beacon is defined as "the time that the data | |
2828 | * symbol containing the first bit of the timestamp is | |
2829 | * transmitted to the PHY plus the transmitting STA’s | |
2830 | * delays through its local PHY from the MAC-PHY | |
2831 | * interface to its interface with the WM" | |
2832 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2833 | * the receiver - we have to take into account the | |
2834 | * offset between the two. | |
2835 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2836 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2837 | */ | |
2838 | int rate = local->hw.wiphy->bands[rx_status->band]-> | |
2839 | bitrates[rx_status->rate_idx].bitrate; | |
2840 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2841 | } else if (local && local->ops && local->ops->get_tsf) | |
2842 | /* second best option: get current TSF */ | |
2843 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2844 | else | |
2845 | /* can't merge without knowing the TSF */ | |
2846 | rx_timestamp = -1LLU; | |
2847 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2848 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2849 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2850 | print_mac(mac, mgmt->sa), | |
2851 | print_mac(mac2, mgmt->bssid), | |
2852 | (unsigned long long)rx_timestamp, | |
2853 | (unsigned long long)beacon_timestamp, | |
2854 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2855 | jiffies); | |
2856 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2857 | if (beacon_timestamp > rx_timestamp) { | |
fba4a1e6 | 2858 | #ifndef CONFIG_MAC80211_IBSS_DEBUG |
d97cf015 | 2859 | if (net_ratelimit()) |
fba4a1e6 | 2860 | #endif |
9d9bf77d BR |
2861 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2862 | "local TSF - IBSS merge with BSSID %s\n", | |
2863 | dev->name, print_mac(mac, mgmt->bssid)); | |
2864 | ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); | |
2865 | ieee80211_ibss_add_sta(dev, NULL, | |
2866 | mgmt->bssid, mgmt->sa); | |
2867 | } | |
2868 | } | |
2869 | ||
f0706e82 JB |
2870 | ieee80211_rx_bss_put(dev, bss); |
2871 | } | |
2872 | ||
2873 | ||
2874 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2875 | struct ieee80211_mgmt *mgmt, | |
2876 | size_t len, | |
2877 | struct ieee80211_rx_status *rx_status) | |
2878 | { | |
2879 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0); | |
2880 | } | |
2881 | ||
2882 | ||
2883 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2884 | struct ieee80211_mgmt *mgmt, | |
2885 | size_t len, | |
2886 | struct ieee80211_rx_status *rx_status) | |
2887 | { | |
f0706e82 JB |
2888 | struct ieee80211_sub_if_data *sdata; |
2889 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
2890 | size_t baselen; |
2891 | struct ieee802_11_elems elems; | |
d3c990fb RR |
2892 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
2893 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 2894 | u32 changed = 0; |
f0706e82 JB |
2895 | |
2896 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); | |
2897 | ||
2898 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
51fb61e7 | 2899 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2900 | return; |
2901 | ifsta = &sdata->u.sta; | |
2902 | ||
d6f2da5b | 2903 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
2904 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
2905 | return; | |
2906 | ||
2907 | /* Process beacon from the current BSS */ | |
2908 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2909 | if (baselen > len) | |
2910 | return; | |
2911 | ||
67a4cce4 | 2912 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2913 | |
3434fbd3 JB |
2914 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2915 | elems.wmm_param_len); | |
d18ef29f RC |
2916 | |
2917 | /* Do not send changes to driver if we are scanning. This removes | |
2918 | * requirement that driver's bss_info_changed function needs to be | |
2919 | * atomic. */ | |
2920 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
2921 | return; | |
2922 | ||
5628221c | 2923 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2924 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
2925 | else { |
2926 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
2927 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
2928 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
2929 | } | |
f0706e82 | 2930 | |
d3c990fb | 2931 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 2932 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
2933 | struct ieee80211_ht_bss_info bss_info; |
2934 | ||
2935 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2936 | (struct ieee80211_ht_addt_info *) | |
2937 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
2938 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
2939 | &bss_info); | |
d3c990fb RR |
2940 | } |
2941 | ||
471b3efd | 2942 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2943 | } |
2944 | ||
2945 | ||
2946 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
2947 | struct ieee80211_if_sta *ifsta, | |
2948 | struct ieee80211_mgmt *mgmt, | |
2949 | size_t len, | |
2950 | struct ieee80211_rx_status *rx_status) | |
2951 | { | |
2952 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2953 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2954 | int tx_last_beacon; | |
2955 | struct sk_buff *skb; | |
2956 | struct ieee80211_mgmt *resp; | |
2957 | u8 *pos, *end; | |
0795af57 JP |
2958 | DECLARE_MAC_BUF(mac); |
2959 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2960 | DECLARE_MAC_BUF(mac2); | |
2961 | DECLARE_MAC_BUF(mac3); | |
2962 | #endif | |
f0706e82 | 2963 | |
51fb61e7 | 2964 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
2965 | ifsta->state != IEEE80211_IBSS_JOINED || |
2966 | len < 24 + 2 || !ifsta->probe_resp) | |
2967 | return; | |
2968 | ||
2969 | if (local->ops->tx_last_beacon) | |
2970 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2971 | else | |
2972 | tx_last_beacon = 1; | |
2973 | ||
2974 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2975 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2976 | "%s (tx_last_beacon=%d)\n", | |
2977 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
2978 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
2979 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2980 | ||
2981 | if (!tx_last_beacon) | |
2982 | return; | |
2983 | ||
2984 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
2985 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
2986 | return; | |
2987 | ||
2988 | end = ((u8 *) mgmt) + len; | |
2989 | pos = mgmt->u.probe_req.variable; | |
2990 | if (pos[0] != WLAN_EID_SSID || | |
2991 | pos + 2 + pos[1] > end) { | |
2992 | if (net_ratelimit()) { | |
2993 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
0795af57 JP |
2994 | "from %s\n", |
2995 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
2996 | } |
2997 | return; | |
2998 | } | |
2999 | if (pos[1] != 0 && | |
3000 | (pos[1] != ifsta->ssid_len || | |
3001 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
3002 | /* Ignore ProbeReq for foreign SSID */ | |
3003 | return; | |
3004 | } | |
3005 | ||
3006 | /* Reply with ProbeResp */ | |
0ec0b7ac | 3007 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
3008 | if (!skb) |
3009 | return; | |
3010 | ||
3011 | resp = (struct ieee80211_mgmt *) skb->data; | |
3012 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
3013 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3014 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
3015 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
3016 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3017 | ieee80211_sta_tx(dev, skb, 0); | |
3018 | } | |
3019 | ||
4e20cb29 JB |
3020 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
3021 | struct ieee80211_if_sta *ifsta, | |
3022 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
3023 | size_t len, |
3024 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 3025 | { |
f709fc69 | 3026 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f709fc69 | 3027 | |
9f985b0e RR |
3028 | if (len < IEEE80211_MIN_ACTION_SIZE) |
3029 | return; | |
3030 | ||
3031 | switch (mgmt->u.action.category) { | |
3032 | case WLAN_CATEGORY_BACK: | |
3033 | switch (mgmt->u.action.u.addba_req.action_code) { | |
3034 | case WLAN_ACTION_ADDBA_REQ: | |
3035 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3036 | sizeof(mgmt->u.action.u.addba_req))) | |
3037 | break; | |
3038 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
3039 | break; | |
eadc8d9e RR |
3040 | case WLAN_ACTION_ADDBA_RESP: |
3041 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3042 | sizeof(mgmt->u.action.u.addba_resp))) | |
3043 | break; | |
3044 | ieee80211_sta_process_addba_resp(dev, mgmt, len); | |
3045 | break; | |
688b88a4 RR |
3046 | case WLAN_ACTION_DELBA: |
3047 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3048 | sizeof(mgmt->u.action.u.delba))) | |
3049 | break; | |
3050 | ieee80211_sta_process_delba(dev, mgmt, len); | |
3051 | break; | |
9f985b0e RR |
3052 | default: |
3053 | if (net_ratelimit()) | |
688b88a4 | 3054 | printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n", |
9f985b0e RR |
3055 | dev->name); |
3056 | break; | |
3057 | } | |
3058 | break; | |
f709fc69 | 3059 | case PLINK_CATEGORY: |
902acc78 | 3060 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3061 | mesh_rx_plink_frame(dev, mgmt, len, rx_status); |
3062 | break; | |
f709fc69 | 3063 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 3064 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3065 | mesh_rx_path_sel_frame(dev, mgmt, len); |
3066 | break; | |
9f985b0e | 3067 | default: |
f709fc69 LCC |
3068 | if (net_ratelimit()) |
3069 | printk(KERN_DEBUG "%s: Rx unknown action frame - " | |
3070 | "category=%d\n", dev->name, mgmt->u.action.category); | |
9f985b0e RR |
3071 | break; |
3072 | } | |
3073 | } | |
f0706e82 JB |
3074 | |
3075 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
3076 | struct ieee80211_rx_status *rx_status) | |
3077 | { | |
3078 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3079 | struct ieee80211_sub_if_data *sdata; | |
3080 | struct ieee80211_if_sta *ifsta; | |
3081 | struct ieee80211_mgmt *mgmt; | |
3082 | u16 fc; | |
3083 | ||
3084 | if (skb->len < 24) | |
3085 | goto fail; | |
3086 | ||
3087 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3088 | ifsta = &sdata->u.sta; | |
3089 | ||
3090 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3091 | fc = le16_to_cpu(mgmt->frame_control); | |
3092 | ||
3093 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3094 | case IEEE80211_STYPE_PROBE_REQ: | |
3095 | case IEEE80211_STYPE_PROBE_RESP: | |
3096 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 3097 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
3098 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
3099 | case IEEE80211_STYPE_AUTH: | |
3100 | case IEEE80211_STYPE_ASSOC_RESP: | |
3101 | case IEEE80211_STYPE_REASSOC_RESP: | |
3102 | case IEEE80211_STYPE_DEAUTH: | |
3103 | case IEEE80211_STYPE_DISASSOC: | |
3104 | skb_queue_tail(&ifsta->skb_queue, skb); | |
3105 | queue_work(local->hw.workqueue, &ifsta->work); | |
3106 | return; | |
3107 | default: | |
3108 | printk(KERN_DEBUG "%s: received unknown management frame - " | |
3109 | "stype=%d\n", dev->name, | |
3110 | (fc & IEEE80211_FCTL_STYPE) >> 4); | |
3111 | break; | |
3112 | } | |
3113 | ||
3114 | fail: | |
3115 | kfree_skb(skb); | |
3116 | } | |
3117 | ||
3118 | ||
3119 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
3120 | struct sk_buff *skb) | |
3121 | { | |
3122 | struct ieee80211_rx_status *rx_status; | |
3123 | struct ieee80211_sub_if_data *sdata; | |
3124 | struct ieee80211_if_sta *ifsta; | |
3125 | struct ieee80211_mgmt *mgmt; | |
3126 | u16 fc; | |
3127 | ||
3128 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3129 | ifsta = &sdata->u.sta; | |
3130 | ||
3131 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
3132 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3133 | fc = le16_to_cpu(mgmt->frame_control); | |
3134 | ||
3135 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3136 | case IEEE80211_STYPE_PROBE_REQ: | |
3137 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
3138 | rx_status); | |
3139 | break; | |
3140 | case IEEE80211_STYPE_PROBE_RESP: | |
3141 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3142 | break; | |
3143 | case IEEE80211_STYPE_BEACON: | |
3144 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3145 | break; | |
3146 | case IEEE80211_STYPE_AUTH: | |
3147 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
3148 | break; | |
3149 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 3150 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
3151 | break; |
3152 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 3153 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
3154 | break; |
3155 | case IEEE80211_STYPE_DEAUTH: | |
3156 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
3157 | break; | |
3158 | case IEEE80211_STYPE_DISASSOC: | |
3159 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
3160 | break; | |
9f985b0e | 3161 | case IEEE80211_STYPE_ACTION: |
f709fc69 | 3162 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 3163 | break; |
f0706e82 JB |
3164 | } |
3165 | ||
3166 | kfree_skb(skb); | |
3167 | } | |
3168 | ||
3169 | ||
9ae54c84 | 3170 | ieee80211_rx_result |
ece8eddd ZY |
3171 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, |
3172 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
3173 | { |
3174 | struct ieee80211_mgmt *mgmt; | |
3175 | u16 fc; | |
3176 | ||
ece8eddd | 3177 | if (skb->len < 2) |
e4c26add | 3178 | return RX_DROP_UNUSABLE; |
f0706e82 JB |
3179 | |
3180 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3181 | fc = le16_to_cpu(mgmt->frame_control); | |
3182 | ||
ece8eddd | 3183 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) |
9ae54c84 | 3184 | return RX_CONTINUE; |
ece8eddd ZY |
3185 | |
3186 | if (skb->len < 24) | |
e4c26add | 3187 | return RX_DROP_MONITOR; |
ece8eddd | 3188 | |
f0706e82 JB |
3189 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { |
3190 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) { | |
3191 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, | |
3192 | skb->len, rx_status); | |
ece8eddd | 3193 | dev_kfree_skb(skb); |
9ae54c84 | 3194 | return RX_QUEUED; |
f0706e82 JB |
3195 | } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { |
3196 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, | |
3197 | rx_status); | |
ece8eddd | 3198 | dev_kfree_skb(skb); |
9ae54c84 | 3199 | return RX_QUEUED; |
f0706e82 JB |
3200 | } |
3201 | } | |
9ae54c84 | 3202 | return RX_CONTINUE; |
f0706e82 JB |
3203 | } |
3204 | ||
3205 | ||
3206 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
3207 | { | |
3208 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3209 | int active = 0; | |
3210 | struct sta_info *sta; | |
d0709a65 | 3211 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3212 | |
d0709a65 JB |
3213 | rcu_read_lock(); |
3214 | ||
3215 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
3216 | if (sta->sdata == sdata && | |
f0706e82 JB |
3217 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
3218 | jiffies)) { | |
3219 | active++; | |
3220 | break; | |
3221 | } | |
3222 | } | |
d0709a65 JB |
3223 | |
3224 | rcu_read_unlock(); | |
f0706e82 JB |
3225 | |
3226 | return active; | |
3227 | } | |
3228 | ||
3229 | ||
f709fc69 | 3230 | static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time) |
f0706e82 JB |
3231 | { |
3232 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3233 | struct sta_info *sta, *tmp; | |
be8755e1 | 3234 | LIST_HEAD(tmp_list); |
0795af57 | 3235 | DECLARE_MAC_BUF(mac); |
d0709a65 | 3236 | unsigned long flags; |
f0706e82 | 3237 | |
d0709a65 | 3238 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 3239 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 3240 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
0795af57 JP |
3241 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
3242 | dev->name, print_mac(mac, sta->addr)); | |
cb585bcc | 3243 | __sta_info_unlink(&sta); |
d0709a65 JB |
3244 | if (sta) |
3245 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 3246 | } |
d0709a65 | 3247 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 3248 | |
d0709a65 JB |
3249 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
3250 | sta_info_destroy(sta); | |
f0706e82 JB |
3251 | } |
3252 | ||
3253 | ||
3254 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
3255 | struct ieee80211_if_sta *ifsta) | |
3256 | { | |
3257 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
3258 | ||
f709fc69 | 3259 | ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT); |
f0706e82 JB |
3260 | if (ieee80211_sta_active_ibss(dev)) |
3261 | return; | |
3262 | ||
3263 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
3264 | "IBSS networks with same SSID (merge)\n", dev->name); | |
3265 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
3266 | } | |
3267 | ||
3268 | ||
f709fc69 LCC |
3269 | #ifdef CONFIG_MAC80211_MESH |
3270 | static void ieee80211_mesh_housekeeping(struct net_device *dev, | |
3271 | struct ieee80211_if_sta *ifsta) | |
3272 | { | |
3273 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3274 | bool free_plinks; | |
3275 | ||
3276 | ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); | |
3277 | mesh_path_expire(dev); | |
3278 | ||
3279 | free_plinks = mesh_plink_availables(sdata); | |
3280 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
3281 | ieee80211_if_config_beacon(dev); | |
3282 | ||
3283 | mod_timer(&ifsta->timer, jiffies + | |
3284 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
3285 | } | |
3286 | ||
3287 | ||
3288 | void ieee80211_start_mesh(struct net_device *dev) | |
3289 | { | |
3290 | struct ieee80211_if_sta *ifsta; | |
3291 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3292 | ifsta = &sdata->u.sta; | |
3293 | ifsta->state = IEEE80211_MESH_UP; | |
3294 | ieee80211_sta_timer((unsigned long)sdata); | |
3295 | } | |
3296 | #endif | |
3297 | ||
3298 | ||
f0706e82 JB |
3299 | void ieee80211_sta_timer(unsigned long data) |
3300 | { | |
3301 | struct ieee80211_sub_if_data *sdata = | |
3302 | (struct ieee80211_sub_if_data *) data; | |
3303 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3304 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
3305 | ||
3306 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3307 | queue_work(local->hw.workqueue, &ifsta->work); | |
3308 | } | |
3309 | ||
f0706e82 JB |
3310 | void ieee80211_sta_work(struct work_struct *work) |
3311 | { | |
3312 | struct ieee80211_sub_if_data *sdata = | |
3313 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
3314 | struct net_device *dev = sdata->dev; | |
3315 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3316 | struct ieee80211_if_sta *ifsta; | |
3317 | struct sk_buff *skb; | |
3318 | ||
3319 | if (!netif_running(dev)) | |
3320 | return; | |
3321 | ||
ece8eddd | 3322 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
3323 | return; |
3324 | ||
51fb61e7 | 3325 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
f709fc69 LCC |
3326 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
3327 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) { | |
f0706e82 | 3328 | printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " |
51fb61e7 | 3329 | "(type=%d)\n", dev->name, sdata->vif.type); |
f0706e82 JB |
3330 | return; |
3331 | } | |
3332 | ifsta = &sdata->u.sta; | |
3333 | ||
3334 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
3335 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
3336 | ||
f709fc69 | 3337 | #ifdef CONFIG_MAC80211_MESH |
902acc78 JB |
3338 | if (ifsta->preq_queue_len && |
3339 | time_after(jiffies, | |
3340 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
f709fc69 LCC |
3341 | mesh_path_start_discovery(dev); |
3342 | #endif | |
3343 | ||
f0706e82 JB |
3344 | if (ifsta->state != IEEE80211_AUTHENTICATE && |
3345 | ifsta->state != IEEE80211_ASSOCIATE && | |
3346 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
3347 | if (ifsta->scan_ssid_len) |
3348 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
3349 | else | |
3350 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
3351 | return; |
3352 | } | |
3353 | ||
3354 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
3355 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
3356 | return; | |
3357 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3358 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
3359 | return; | |
3360 | ||
3361 | switch (ifsta->state) { | |
3362 | case IEEE80211_DISABLED: | |
3363 | break; | |
3364 | case IEEE80211_AUTHENTICATE: | |
3365 | ieee80211_authenticate(dev, ifsta); | |
3366 | break; | |
3367 | case IEEE80211_ASSOCIATE: | |
3368 | ieee80211_associate(dev, ifsta); | |
3369 | break; | |
3370 | case IEEE80211_ASSOCIATED: | |
3371 | ieee80211_associated(dev, ifsta); | |
3372 | break; | |
3373 | case IEEE80211_IBSS_SEARCH: | |
3374 | ieee80211_sta_find_ibss(dev, ifsta); | |
3375 | break; | |
3376 | case IEEE80211_IBSS_JOINED: | |
3377 | ieee80211_sta_merge_ibss(dev, ifsta); | |
3378 | break; | |
f709fc69 LCC |
3379 | #ifdef CONFIG_MAC80211_MESH |
3380 | case IEEE80211_MESH_UP: | |
3381 | ieee80211_mesh_housekeeping(dev, ifsta); | |
3382 | break; | |
3383 | #endif | |
f0706e82 JB |
3384 | default: |
3385 | printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", | |
3386 | ifsta->state); | |
3387 | break; | |
3388 | } | |
3389 | ||
3390 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
3391 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
3392 | "mixed-cell disabled - disassociate\n", dev->name); | |
3393 | ||
3394 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
3395 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3396 | } | |
3397 | } | |
3398 | ||
3399 | ||
3400 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
3401 | struct ieee80211_if_sta *ifsta) | |
3402 | { | |
3403 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3404 | ||
3405 | if (local->ops->reset_tsf) { | |
3406 | /* Reset own TSF to allow time synchronization work. */ | |
3407 | local->ops->reset_tsf(local_to_hw(local)); | |
3408 | } | |
3409 | ||
3410 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
3411 | ||
3412 | ||
3413 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
3414 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3415 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
3416 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
3417 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
3418 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
3419 | else | |
3420 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3421 | printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name, | |
3422 | ifsta->auth_alg); | |
3423 | ifsta->auth_transaction = -1; | |
d6f2da5b JS |
3424 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
3425 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
3426 | netif_carrier_off(dev); |
3427 | } | |
3428 | ||
3429 | ||
3430 | void ieee80211_sta_req_auth(struct net_device *dev, | |
3431 | struct ieee80211_if_sta *ifsta) | |
3432 | { | |
3433 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3434 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3435 | ||
51fb61e7 | 3436 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3437 | return; |
3438 | ||
d6f2da5b JS |
3439 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3440 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
3441 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
3442 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
3443 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
3444 | queue_work(local->hw.workqueue, &ifsta->work); | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
3449 | const char *ssid, int ssid_len) | |
3450 | { | |
3451 | int tmp, hidden_ssid; | |
3452 | ||
48225709 MW |
3453 | if (ssid_len == ifsta->ssid_len && |
3454 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
3455 | return 1; |
3456 | ||
d6f2da5b | 3457 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
3458 | return 0; |
3459 | ||
3460 | hidden_ssid = 1; | |
3461 | tmp = ssid_len; | |
3462 | while (tmp--) { | |
3463 | if (ssid[tmp] != '\0') { | |
3464 | hidden_ssid = 0; | |
3465 | break; | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
3470 | return 1; | |
3471 | ||
3472 | if (ssid_len == 1 && ssid[0] == ' ') | |
3473 | return 1; | |
3474 | ||
3475 | return 0; | |
3476 | } | |
3477 | ||
3478 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
3479 | struct ieee80211_if_sta *ifsta) | |
3480 | { | |
3481 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3482 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3483 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
3484 | int top_rssi = 0, freq; | |
3485 | ||
f0706e82 | 3486 | spin_lock_bh(&local->sta_bss_lock); |
8318d78a | 3487 | freq = local->oper_channel->center_freq; |
f0706e82 JB |
3488 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
3489 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
3490 | continue; | |
3491 | ||
34a961f7 AK |
3492 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
3493 | IEEE80211_STA_AUTO_BSSID_SEL | | |
3494 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
3495 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
3496 | !!sdata->default_key)) | |
f0706e82 JB |
3497 | continue; |
3498 | ||
d6f2da5b JS |
3499 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
3500 | bss->freq != freq) | |
f0706e82 JB |
3501 | continue; |
3502 | ||
d6f2da5b | 3503 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
3504 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
3505 | continue; | |
3506 | ||
d6f2da5b | 3507 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
3508 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
3509 | continue; | |
3510 | ||
566bfe5a | 3511 | if (!selected || top_rssi < bss->signal) { |
f0706e82 | 3512 | selected = bss; |
566bfe5a | 3513 | top_rssi = bss->signal; |
f0706e82 JB |
3514 | } |
3515 | } | |
3516 | if (selected) | |
3517 | atomic_inc(&selected->users); | |
3518 | spin_unlock_bh(&local->sta_bss_lock); | |
3519 | ||
3520 | if (selected) { | |
be038b37 | 3521 | ieee80211_set_freq(dev, selected->freq); |
d6f2da5b | 3522 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
3523 | ieee80211_sta_set_ssid(dev, selected->ssid, |
3524 | selected->ssid_len); | |
3525 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
e2839d8f | 3526 | ieee80211_sta_def_wmm_params(dev, selected, 0); |
f0706e82 JB |
3527 | ieee80211_rx_bss_put(dev, selected); |
3528 | ifsta->state = IEEE80211_AUTHENTICATE; | |
f0706e82 JB |
3529 | ieee80211_sta_reset_auth(dev, ifsta); |
3530 | return 0; | |
3531 | } else { | |
3532 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 3533 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
3534 | ieee80211_sta_start_scan(dev, NULL, 0); |
3535 | else | |
3536 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
3537 | ifsta->ssid_len); | |
f0706e82 JB |
3538 | ifsta->state = IEEE80211_AUTHENTICATE; |
3539 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
3540 | } else | |
3541 | ifsta->state = IEEE80211_DISABLED; | |
3542 | } | |
f0706e82 JB |
3543 | return -1; |
3544 | } | |
3545 | ||
f0706e82 JB |
3546 | |
3547 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
3548 | struct ieee80211_if_sta *ifsta) | |
3549 | { | |
3550 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3551 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 3552 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
8318d78a | 3553 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3554 | u8 bssid[ETH_ALEN], *pos; |
3555 | int i; | |
167ad6f7 | 3556 | int ret; |
0795af57 | 3557 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3558 | |
3559 | #if 0 | |
3560 | /* Easier testing, use fixed BSSID. */ | |
3561 | memset(bssid, 0xfe, ETH_ALEN); | |
3562 | #else | |
3563 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
3564 | * own MAC address to make sure that devices that do not have proper | |
3565 | * random number generator get different BSSID. */ | |
3566 | get_random_bytes(bssid, ETH_ALEN); | |
3567 | for (i = 0; i < ETH_ALEN; i++) | |
3568 | bssid[i] ^= dev->dev_addr[i]; | |
3569 | bssid[0] &= ~0x01; | |
3570 | bssid[0] |= 0x02; | |
3571 | #endif | |
3572 | ||
0795af57 JP |
3573 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
3574 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 3575 | |
8318d78a JB |
3576 | bss = ieee80211_rx_bss_add(dev, bssid, |
3577 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3578 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
3579 | if (!bss) |
3580 | return -ENOMEM; | |
3581 | ||
8318d78a JB |
3582 | bss->band = local->hw.conf.channel->band; |
3583 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
3584 | |
3585 | if (local->hw.conf.beacon_int == 0) | |
f709fc69 | 3586 | local->hw.conf.beacon_int = 10000; |
f0706e82 | 3587 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
3588 | bss->last_update = jiffies; |
3589 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
3590 | |
3591 | if (sdata->default_key) | |
f0706e82 | 3592 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 3593 | else |
f0706e82 | 3594 | sdata->drop_unencrypted = 0; |
988c0f72 | 3595 | |
8318d78a | 3596 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 3597 | pos = bss->supp_rates; |
8318d78a JB |
3598 | for (i = 0; i < sband->n_bitrates; i++) { |
3599 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
3600 | *pos++ = (u8) (rate / 5); |
3601 | } | |
3602 | ||
167ad6f7 TW |
3603 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3604 | ieee80211_rx_bss_put(dev, bss); | |
3605 | return ret; | |
f0706e82 JB |
3606 | } |
3607 | ||
3608 | ||
3609 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
3610 | struct ieee80211_if_sta *ifsta) | |
3611 | { | |
3612 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3613 | struct ieee80211_sta_bss *bss; | |
3614 | int found = 0; | |
3615 | u8 bssid[ETH_ALEN]; | |
3616 | int active_ibss; | |
0795af57 JP |
3617 | DECLARE_MAC_BUF(mac); |
3618 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
3619 | |
3620 | if (ifsta->ssid_len == 0) | |
3621 | return -EINVAL; | |
3622 | ||
3623 | active_ibss = ieee80211_sta_active_ibss(dev); | |
3624 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3625 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
3626 | dev->name, active_ibss); | |
3627 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3628 | spin_lock_bh(&local->sta_bss_lock); | |
3629 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3630 | if (ifsta->ssid_len != bss->ssid_len || | |
3631 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
3632 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
3633 | continue; | |
3634 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3635 | printk(KERN_DEBUG " bssid=%s found\n", |
3636 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
3637 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3638 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
3639 | found = 1; | |
3640 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
3641 | break; | |
3642 | } | |
3643 | spin_unlock_bh(&local->sta_bss_lock); | |
3644 | ||
3645 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3646 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " |
3647 | "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid)); | |
f0706e82 JB |
3648 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3649 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && | |
8318d78a JB |
3650 | (bss = ieee80211_rx_bss_get(dev, bssid, |
3651 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3652 | ifsta->ssid, ifsta->ssid_len))) { |
167ad6f7 | 3653 | int ret; |
0795af57 | 3654 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 3655 | " based on configured SSID\n", |
0795af57 | 3656 | dev->name, print_mac(mac, bssid)); |
167ad6f7 TW |
3657 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3658 | ieee80211_rx_bss_put(dev, bss); | |
3659 | return ret; | |
f0706e82 JB |
3660 | } |
3661 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3662 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
3663 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3664 | ||
3665 | /* Selected IBSS not found in current scan results - try to scan */ | |
3666 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
3667 | !ieee80211_sta_active_ibss(dev)) { | |
3668 | mod_timer(&ifsta->timer, jiffies + | |
3669 | IEEE80211_IBSS_MERGE_INTERVAL); | |
3670 | } else if (time_after(jiffies, local->last_scan_completed + | |
3671 | IEEE80211_SCAN_INTERVAL)) { | |
3672 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
3673 | "join\n", dev->name); | |
3674 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
3675 | ifsta->ssid_len); | |
3676 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
3677 | int interval = IEEE80211_SCAN_INTERVAL; | |
3678 | ||
3679 | if (time_after(jiffies, ifsta->ibss_join_req + | |
3680 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 3681 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
3682 | (!(local->oper_channel->flags & |
3683 | IEEE80211_CHAN_NO_IBSS))) | |
f0706e82 | 3684 | return ieee80211_sta_create_ibss(dev, ifsta); |
d6f2da5b | 3685 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a JB |
3686 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
3687 | " %d MHz\n", dev->name, | |
3688 | local->hw.conf.channel->center_freq); | |
f0706e82 JB |
3689 | } |
3690 | ||
3691 | /* No IBSS found - decrease scan interval and continue | |
3692 | * scanning. */ | |
3693 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3694 | } | |
3695 | ||
3696 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3697 | mod_timer(&ifsta->timer, jiffies + interval); | |
3698 | return 0; | |
3699 | } | |
3700 | ||
3701 | return 0; | |
3702 | } | |
3703 | ||
3704 | ||
3705 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3706 | { | |
8318d78a | 3707 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3708 | struct ieee80211_if_sta *ifsta; |
f0706e82 JB |
3709 | |
3710 | if (len > IEEE80211_MAX_SSID_LEN) | |
3711 | return -EINVAL; | |
3712 | ||
f0706e82 JB |
3713 | ifsta = &sdata->u.sta; |
3714 | ||
3715 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) | |
d6f2da5b | 3716 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
3717 | memcpy(ifsta->ssid, ssid, len); |
3718 | memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len); | |
3719 | ifsta->ssid_len = len; | |
3720 | ||
d6f2da5b JS |
3721 | if (len) |
3722 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3723 | else | |
3724 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
51fb61e7 | 3725 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3726 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3727 | ifsta->ibss_join_req = jiffies; |
3728 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3729 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3730 | } | |
3731 | return 0; | |
3732 | } | |
3733 | ||
3734 | ||
3735 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3736 | { | |
3737 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3738 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3739 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3740 | *len = ifsta->ssid_len; | |
3741 | return 0; | |
3742 | } | |
3743 | ||
3744 | ||
3745 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3746 | { | |
3747 | struct ieee80211_sub_if_data *sdata; | |
3748 | struct ieee80211_if_sta *ifsta; | |
3749 | int res; | |
3750 | ||
3751 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3752 | ifsta = &sdata->u.sta; | |
3753 | ||
3754 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3755 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
3756 | res = ieee80211_if_config(dev); | |
3757 | if (res) { | |
3758 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3759 | "the low-level driver\n", dev->name); | |
3760 | return res; | |
3761 | } | |
3762 | } | |
3763 | ||
d6f2da5b JS |
3764 | if (is_valid_ether_addr(bssid)) |
3765 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3766 | else |
d6f2da5b JS |
3767 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3768 | ||
f0706e82 JB |
3769 | return 0; |
3770 | } | |
3771 | ||
3772 | ||
3773 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3774 | struct ieee80211_sub_if_data *sdata, | |
3775 | int powersave) | |
3776 | { | |
3777 | struct sk_buff *skb; | |
3778 | struct ieee80211_hdr *nullfunc; | |
3779 | u16 fc; | |
3780 | ||
3781 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3782 | if (!skb) { | |
3783 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3784 | "frame\n", sdata->dev->name); | |
3785 | return; | |
3786 | } | |
3787 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3788 | ||
3789 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3790 | memset(nullfunc, 0, 24); | |
3791 | fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
3792 | IEEE80211_FCTL_TODS; | |
3793 | if (powersave) | |
3794 | fc |= IEEE80211_FCTL_PM; | |
3795 | nullfunc->frame_control = cpu_to_le16(fc); | |
3796 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); | |
3797 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3798 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3799 | ||
3800 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3801 | } | |
3802 | ||
3803 | ||
69d3b6f4 JB |
3804 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3805 | { | |
3806 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
3807 | ieee80211_vif_is_mesh(&sdata->vif)) | |
3808 | ieee80211_sta_timer((unsigned long)sdata); | |
3809 | } | |
3810 | ||
f0706e82 JB |
3811 | void ieee80211_scan_completed(struct ieee80211_hw *hw) |
3812 | { | |
3813 | struct ieee80211_local *local = hw_to_local(hw); | |
3814 | struct net_device *dev = local->scan_dev; | |
3815 | struct ieee80211_sub_if_data *sdata; | |
3816 | union iwreq_data wrqu; | |
3817 | ||
3818 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3819 | memset(&wrqu, 0, sizeof(wrqu)); |
3820 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3821 | |
ece8eddd ZY |
3822 | if (local->sta_hw_scanning) { |
3823 | local->sta_hw_scanning = 0; | |
675ef586 MA |
3824 | if (ieee80211_hw_config(local)) |
3825 | printk(KERN_DEBUG "%s: failed to restore operational " | |
3826 | "channel after scan\n", dev->name); | |
69d3b6f4 JB |
3827 | /* Restart STA timer for HW scan case */ |
3828 | rcu_read_lock(); | |
3829 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3830 | ieee80211_restart_sta_timer(sdata); | |
3831 | rcu_read_unlock(); | |
3832 | ||
ece8eddd ZY |
3833 | goto done; |
3834 | } | |
3835 | ||
3836 | local->sta_sw_scanning = 0; | |
f0706e82 | 3837 | if (ieee80211_hw_config(local)) |
4b50e388 | 3838 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3839 | "channel after scan\n", dev->name); |
3840 | ||
4150c572 JB |
3841 | |
3842 | netif_tx_lock_bh(local->mdev); | |
3843 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; | |
3844 | local->ops->configure_filter(local_to_hw(local), | |
3845 | FIF_BCN_PRBRESP_PROMISC, | |
3846 | &local->filter_flags, | |
3847 | local->mdev->mc_count, | |
3848 | local->mdev->mc_list); | |
3849 | ||
3850 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 | 3851 | |
79010420 JB |
3852 | rcu_read_lock(); |
3853 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3854 | |
3855 | /* No need to wake the master device. */ | |
3856 | if (sdata->dev == local->mdev) | |
3857 | continue; | |
3858 | ||
69d3b6f4 JB |
3859 | /* Tell AP we're back */ |
3860 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && | |
3861 | sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) | |
3862 | ieee80211_send_nullfunc(local, sdata, 0); | |
14042cbe | 3863 | |
69d3b6f4 | 3864 | ieee80211_restart_sta_timer(sdata); |
f709fc69 | 3865 | |
f0706e82 JB |
3866 | netif_wake_queue(sdata->dev); |
3867 | } | |
79010420 | 3868 | rcu_read_unlock(); |
f0706e82 | 3869 | |
ece8eddd | 3870 | done: |
f0706e82 | 3871 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3872 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3873 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3874 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
f0706e82 JB |
3875 | (!ifsta->state == IEEE80211_IBSS_JOINED && |
3876 | !ieee80211_sta_active_ibss(dev))) | |
3877 | ieee80211_sta_find_ibss(dev, ifsta); | |
3878 | } | |
3879 | } | |
3880 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
3881 | ||
3882 | void ieee80211_sta_scan_work(struct work_struct *work) | |
3883 | { | |
3884 | struct ieee80211_local *local = | |
3885 | container_of(work, struct ieee80211_local, scan_work.work); | |
3886 | struct net_device *dev = local->scan_dev; | |
3887 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
8318d78a | 3888 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3889 | struct ieee80211_channel *chan; |
3890 | int skip; | |
3891 | unsigned long next_delay = 0; | |
3892 | ||
ece8eddd | 3893 | if (!local->sta_sw_scanning) |
f0706e82 JB |
3894 | return; |
3895 | ||
3896 | switch (local->scan_state) { | |
3897 | case SCAN_SET_CHANNEL: | |
69d464d5 JB |
3898 | /* |
3899 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS | |
3900 | * after we successfully scanned the last channel of the last | |
3901 | * band (and the last band is supported by the hw) | |
3902 | */ | |
8318d78a JB |
3903 | if (local->scan_band < IEEE80211_NUM_BANDS) |
3904 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3905 | else | |
3906 | sband = NULL; | |
3907 | ||
69d464d5 JB |
3908 | /* |
3909 | * If we are at an unsupported band and have more bands | |
3910 | * left to scan, advance to the next supported one. | |
3911 | */ | |
3912 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { | |
8318d78a JB |
3913 | local->scan_band++; |
3914 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3915 | local->scan_channel_idx = 0; | |
3916 | } | |
3917 | ||
69d464d5 JB |
3918 | /* if no more bands/channels left, complete scan */ |
3919 | if (!sband || local->scan_channel_idx >= sband->n_channels) { | |
f0706e82 JB |
3920 | ieee80211_scan_completed(local_to_hw(local)); |
3921 | return; | |
3922 | } | |
8318d78a JB |
3923 | skip = 0; |
3924 | chan = &sband->channels[local->scan_channel_idx]; | |
3925 | ||
3926 | if (chan->flags & IEEE80211_CHAN_DISABLED || | |
51fb61e7 | 3927 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
8318d78a | 3928 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
f0706e82 JB |
3929 | skip = 1; |
3930 | ||
3931 | if (!skip) { | |
f0706e82 JB |
3932 | local->scan_channel = chan; |
3933 | if (ieee80211_hw_config(local)) { | |
8318d78a JB |
3934 | printk(KERN_DEBUG "%s: failed to set freq to " |
3935 | "%d MHz for scan\n", dev->name, | |
3936 | chan->center_freq); | |
f0706e82 JB |
3937 | skip = 1; |
3938 | } | |
3939 | } | |
3940 | ||
69d464d5 | 3941 | /* advance state machine to next channel/band */ |
f0706e82 | 3942 | local->scan_channel_idx++; |
8318d78a | 3943 | if (local->scan_channel_idx >= sband->n_channels) { |
69d464d5 JB |
3944 | /* |
3945 | * scan_band may end up == IEEE80211_NUM_BANDS, but | |
3946 | * we'll catch that case above and complete the scan | |
3947 | * if that is the case. | |
3948 | */ | |
8318d78a JB |
3949 | local->scan_band++; |
3950 | local->scan_channel_idx = 0; | |
f0706e82 JB |
3951 | } |
3952 | ||
3953 | if (skip) | |
3954 | break; | |
3955 | ||
3956 | next_delay = IEEE80211_PROBE_DELAY + | |
3957 | usecs_to_jiffies(local->hw.channel_change_time); | |
3958 | local->scan_state = SCAN_SEND_PROBE; | |
3959 | break; | |
3960 | case SCAN_SEND_PROBE: | |
8318d78a | 3961 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
f0706e82 | 3962 | local->scan_state = SCAN_SET_CHANNEL; |
8318d78a JB |
3963 | |
3964 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
3965 | break; | |
3966 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
3967 | local->scan_ssid_len); | |
3968 | next_delay = IEEE80211_CHANNEL_TIME; | |
f0706e82 JB |
3969 | break; |
3970 | } | |
3971 | ||
ece8eddd | 3972 | if (local->sta_sw_scanning) |
f0706e82 JB |
3973 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
3974 | next_delay); | |
3975 | } | |
3976 | ||
3977 | ||
3978 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
3979 | u8 *ssid, size_t ssid_len) | |
3980 | { | |
3981 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3982 | struct ieee80211_sub_if_data *sdata; | |
3983 | ||
3984 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
3985 | return -EINVAL; | |
3986 | ||
3987 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
3988 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
3989 | * BSSID: MACAddress | |
3990 | * SSID | |
3991 | * ScanType: ACTIVE, PASSIVE | |
3992 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
3993 | * a Probe frame during active scanning | |
3994 | * ChannelList | |
3995 | * MinChannelTime (>= ProbeDelay), in TU | |
3996 | * MaxChannelTime: (>= MinChannelTime), in TU | |
3997 | */ | |
3998 | ||
3999 | /* MLME-SCAN.confirm | |
4000 | * BSSDescriptionSet | |
4001 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
4002 | */ | |
4003 | ||
ece8eddd | 4004 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4005 | if (local->scan_dev == dev) |
4006 | return 0; | |
4007 | return -EBUSY; | |
4008 | } | |
4009 | ||
4010 | if (local->ops->hw_scan) { | |
4011 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 4012 | ssid, ssid_len); |
f0706e82 | 4013 | if (!rc) { |
ece8eddd | 4014 | local->sta_hw_scanning = 1; |
f0706e82 JB |
4015 | local->scan_dev = dev; |
4016 | } | |
4017 | return rc; | |
4018 | } | |
4019 | ||
ece8eddd | 4020 | local->sta_sw_scanning = 1; |
f0706e82 | 4021 | |
79010420 JB |
4022 | rcu_read_lock(); |
4023 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
4024 | |
4025 | /* Don't stop the master interface, otherwise we can't transmit | |
4026 | * probes! */ | |
4027 | if (sdata->dev == local->mdev) | |
4028 | continue; | |
4029 | ||
f0706e82 | 4030 | netif_stop_queue(sdata->dev); |
51fb61e7 | 4031 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 4032 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4033 | ieee80211_send_nullfunc(local, sdata, 1); |
4034 | } | |
79010420 | 4035 | rcu_read_unlock(); |
f0706e82 JB |
4036 | |
4037 | if (ssid) { | |
4038 | local->scan_ssid_len = ssid_len; | |
4039 | memcpy(local->scan_ssid, ssid, ssid_len); | |
4040 | } else | |
4041 | local->scan_ssid_len = 0; | |
4042 | local->scan_state = SCAN_SET_CHANNEL; | |
f0706e82 | 4043 | local->scan_channel_idx = 0; |
8318d78a | 4044 | local->scan_band = IEEE80211_BAND_2GHZ; |
f0706e82 JB |
4045 | local->scan_dev = dev; |
4046 | ||
4150c572 JB |
4047 | netif_tx_lock_bh(local->mdev); |
4048 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; | |
4049 | local->ops->configure_filter(local_to_hw(local), | |
4050 | FIF_BCN_PRBRESP_PROMISC, | |
4051 | &local->filter_flags, | |
4052 | local->mdev->mc_count, | |
4053 | local->mdev->mc_list); | |
4054 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 JB |
4055 | |
4056 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
4057 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
4058 | IEEE80211_CHANNEL_TIME); | |
4059 | ||
4060 | return 0; | |
4061 | } | |
4062 | ||
4063 | ||
4064 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
4065 | { | |
4066 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4067 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4068 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4069 | ||
51fb61e7 | 4070 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4071 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
4072 | ||
ece8eddd | 4073 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4074 | if (local->scan_dev == dev) |
4075 | return 0; | |
4076 | return -EBUSY; | |
4077 | } | |
4078 | ||
a0af5f14 HS |
4079 | ifsta->scan_ssid_len = ssid_len; |
4080 | if (ssid_len) | |
4081 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
4082 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
4083 | queue_work(local->hw.workqueue, &ifsta->work); | |
4084 | return 0; | |
4085 | } | |
4086 | ||
4087 | static char * | |
4088 | ieee80211_sta_scan_result(struct net_device *dev, | |
4089 | struct ieee80211_sta_bss *bss, | |
4090 | char *current_ev, char *end_buf) | |
4091 | { | |
4092 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4093 | struct iw_event iwe; | |
4094 | ||
4095 | if (time_after(jiffies, | |
4096 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
4097 | return current_ev; | |
4098 | ||
f0706e82 JB |
4099 | memset(&iwe, 0, sizeof(iwe)); |
4100 | iwe.cmd = SIOCGIWAP; | |
4101 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
4102 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
4103 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
4104 | IW_EV_ADDR_LEN); | |
4105 | ||
4106 | memset(&iwe, 0, sizeof(iwe)); | |
4107 | iwe.cmd = SIOCGIWESSID; | |
902acc78 JB |
4108 | if (bss_mesh_cfg(bss)) { |
4109 | iwe.u.data.length = bss_mesh_id_len(bss); | |
f709fc69 LCC |
4110 | iwe.u.data.flags = 1; |
4111 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
902acc78 | 4112 | bss_mesh_id(bss)); |
f709fc69 LCC |
4113 | } else { |
4114 | iwe.u.data.length = bss->ssid_len; | |
4115 | iwe.u.data.flags = 1; | |
4116 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
4117 | bss->ssid); | |
4118 | } | |
f0706e82 | 4119 | |
1d1b5359 LCC |
4120 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) |
4121 | || bss_mesh_cfg(bss)) { | |
f0706e82 JB |
4122 | memset(&iwe, 0, sizeof(iwe)); |
4123 | iwe.cmd = SIOCGIWMODE; | |
902acc78 | 4124 | if (bss_mesh_cfg(bss)) |
f709fc69 LCC |
4125 | iwe.u.mode = IW_MODE_MESH; |
4126 | else if (bss->capability & WLAN_CAPABILITY_ESS) | |
f0706e82 JB |
4127 | iwe.u.mode = IW_MODE_MASTER; |
4128 | else | |
4129 | iwe.u.mode = IW_MODE_ADHOC; | |
4130 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
4131 | IW_EV_UINT_LEN); | |
4132 | } | |
4133 | ||
4134 | memset(&iwe, 0, sizeof(iwe)); | |
4135 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4136 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); |
4137 | iwe.u.freq.e = 0; | |
f0706e82 JB |
4138 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, |
4139 | IW_EV_FREQ_LEN); | |
8318d78a JB |
4140 | |
4141 | memset(&iwe, 0, sizeof(iwe)); | |
4142 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4143 | iwe.u.freq.m = bss->freq; |
4144 | iwe.u.freq.e = 6; | |
f0706e82 JB |
4145 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, |
4146 | IW_EV_FREQ_LEN); | |
f0706e82 JB |
4147 | memset(&iwe, 0, sizeof(iwe)); |
4148 | iwe.cmd = IWEVQUAL; | |
566bfe5a BR |
4149 | iwe.u.qual.qual = bss->qual; |
4150 | iwe.u.qual.level = bss->signal; | |
f0706e82 JB |
4151 | iwe.u.qual.noise = bss->noise; |
4152 | iwe.u.qual.updated = local->wstats_flags; | |
4153 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
4154 | IW_EV_QUAL_LEN); | |
4155 | ||
4156 | memset(&iwe, 0, sizeof(iwe)); | |
4157 | iwe.cmd = SIOCGIWENCODE; | |
4158 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
4159 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
4160 | else | |
4161 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
4162 | iwe.u.data.length = 0; | |
4163 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, ""); | |
4164 | ||
4165 | if (bss && bss->wpa_ie) { | |
4166 | memset(&iwe, 0, sizeof(iwe)); | |
4167 | iwe.cmd = IWEVGENIE; | |
4168 | iwe.u.data.length = bss->wpa_ie_len; | |
4169 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
4170 | bss->wpa_ie); | |
4171 | } | |
4172 | ||
4173 | if (bss && bss->rsn_ie) { | |
4174 | memset(&iwe, 0, sizeof(iwe)); | |
4175 | iwe.cmd = IWEVGENIE; | |
4176 | iwe.u.data.length = bss->rsn_ie_len; | |
4177 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
4178 | bss->rsn_ie); | |
4179 | } | |
4180 | ||
e623157b EG |
4181 | if (bss && bss->ht_ie) { |
4182 | memset(&iwe, 0, sizeof(iwe)); | |
4183 | iwe.cmd = IWEVGENIE; | |
4184 | iwe.u.data.length = bss->ht_ie_len; | |
4185 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
4186 | bss->ht_ie); | |
4187 | } | |
4188 | ||
f0706e82 JB |
4189 | if (bss && bss->supp_rates_len > 0) { |
4190 | /* display all supported rates in readable format */ | |
4191 | char *p = current_ev + IW_EV_LCP_LEN; | |
4192 | int i; | |
4193 | ||
4194 | memset(&iwe, 0, sizeof(iwe)); | |
4195 | iwe.cmd = SIOCGIWRATE; | |
4196 | /* Those two flags are ignored... */ | |
4197 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
4198 | ||
4199 | for (i = 0; i < bss->supp_rates_len; i++) { | |
4200 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
4201 | 0x7f) * 500000); | |
4202 | p = iwe_stream_add_value(current_ev, p, | |
4203 | end_buf, &iwe, IW_EV_PARAM_LEN); | |
4204 | } | |
4205 | current_ev = p; | |
4206 | } | |
4207 | ||
4208 | if (bss) { | |
4209 | char *buf; | |
4210 | buf = kmalloc(30, GFP_ATOMIC); | |
4211 | if (buf) { | |
4212 | memset(&iwe, 0, sizeof(iwe)); | |
4213 | iwe.cmd = IWEVCUSTOM; | |
4214 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
4215 | iwe.u.data.length = strlen(buf); | |
4216 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4217 | &iwe, buf); | |
4218 | kfree(buf); | |
4219 | } | |
4220 | } | |
4221 | ||
902acc78 | 4222 | if (bss_mesh_cfg(bss)) { |
f709fc69 | 4223 | char *buf; |
24736701 | 4224 | u8 *cfg = bss_mesh_cfg(bss); |
4f5d4c4d | 4225 | buf = kmalloc(50, GFP_ATOMIC); |
f709fc69 LCC |
4226 | if (buf) { |
4227 | memset(&iwe, 0, sizeof(iwe)); | |
4228 | iwe.cmd = IWEVCUSTOM; | |
24736701 | 4229 | sprintf(buf, "Mesh network (version %d)", cfg[0]); |
4f5d4c4d LCC |
4230 | iwe.u.data.length = strlen(buf); |
4231 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4232 | &iwe, buf); | |
4233 | sprintf(buf, "Path Selection Protocol ID: " | |
24736701 JL |
4234 | "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], |
4235 | cfg[4]); | |
4f5d4c4d LCC |
4236 | iwe.u.data.length = strlen(buf); |
4237 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4238 | &iwe, buf); | |
4239 | sprintf(buf, "Path Selection Metric ID: " | |
24736701 JL |
4240 | "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], |
4241 | cfg[8]); | |
4f5d4c4d LCC |
4242 | iwe.u.data.length = strlen(buf); |
4243 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4244 | &iwe, buf); | |
4245 | sprintf(buf, "Congestion Control Mode ID: " | |
24736701 JL |
4246 | "0x%02X%02X%02X%02X", cfg[9], cfg[10], |
4247 | cfg[11], cfg[12]); | |
4f5d4c4d LCC |
4248 | iwe.u.data.length = strlen(buf); |
4249 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4250 | &iwe, buf); | |
4251 | sprintf(buf, "Channel Precedence: " | |
24736701 JL |
4252 | "0x%02X%02X%02X%02X", cfg[13], cfg[14], |
4253 | cfg[15], cfg[16]); | |
f709fc69 LCC |
4254 | iwe.u.data.length = strlen(buf); |
4255 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
4256 | &iwe, buf); | |
4257 | kfree(buf); | |
4258 | } | |
4259 | } | |
4260 | ||
f0706e82 JB |
4261 | return current_ev; |
4262 | } | |
4263 | ||
4264 | ||
4265 | int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len) | |
4266 | { | |
4267 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4268 | char *current_ev = buf; | |
4269 | char *end_buf = buf + len; | |
4270 | struct ieee80211_sta_bss *bss; | |
4271 | ||
4272 | spin_lock_bh(&local->sta_bss_lock); | |
4273 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
4274 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
4275 | spin_unlock_bh(&local->sta_bss_lock); | |
4276 | return -E2BIG; | |
4277 | } | |
4278 | current_ev = ieee80211_sta_scan_result(dev, bss, current_ev, | |
4279 | end_buf); | |
4280 | } | |
4281 | spin_unlock_bh(&local->sta_bss_lock); | |
4282 | return current_ev - buf; | |
4283 | } | |
4284 | ||
4285 | ||
4286 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
4287 | { | |
4288 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4289 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
988c0f72 | 4290 | |
f0706e82 JB |
4291 | kfree(ifsta->extra_ie); |
4292 | if (len == 0) { | |
4293 | ifsta->extra_ie = NULL; | |
4294 | ifsta->extra_ie_len = 0; | |
4295 | return 0; | |
4296 | } | |
4297 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
4298 | if (!ifsta->extra_ie) { | |
4299 | ifsta->extra_ie_len = 0; | |
4300 | return -ENOMEM; | |
4301 | } | |
4302 | memcpy(ifsta->extra_ie, ie, len); | |
4303 | ifsta->extra_ie_len = len; | |
4304 | return 0; | |
4305 | } | |
4306 | ||
4307 | ||
988c0f72 JB |
4308 | struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, |
4309 | struct sk_buff *skb, u8 *bssid, | |
4310 | u8 *addr) | |
f0706e82 JB |
4311 | { |
4312 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4313 | struct sta_info *sta; | |
91fa558b | 4314 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 4315 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
4316 | |
4317 | /* TODO: Could consider removing the least recently used entry and | |
4318 | * allow new one to be added. */ | |
4319 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
4320 | if (net_ratelimit()) { | |
4321 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 4322 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
4323 | } |
4324 | return NULL; | |
4325 | } | |
4326 | ||
0795af57 | 4327 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 4328 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f0706e82 | 4329 | |
73651ee6 JB |
4330 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
4331 | if (!sta) | |
f0706e82 JB |
4332 | return NULL; |
4333 | ||
07346f81 | 4334 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 4335 | |
8318d78a JB |
4336 | sta->supp_rates[local->hw.conf.channel->band] = |
4337 | sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band]; | |
f0706e82 JB |
4338 | |
4339 | rate_control_rate_init(sta, local); | |
4340 | ||
93e5deb1 | 4341 | if (sta_info_insert(sta)) |
73651ee6 | 4342 | return NULL; |
73651ee6 | 4343 | |
d0709a65 | 4344 | return sta; |
f0706e82 JB |
4345 | } |
4346 | ||
4347 | ||
4348 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
4349 | { | |
4350 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4351 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4352 | ||
4353 | printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n", | |
4354 | dev->name, reason); | |
4355 | ||
51fb61e7 JB |
4356 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
4357 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
4358 | return -EINVAL; |
4359 | ||
4360 | ieee80211_send_deauth(dev, ifsta, reason); | |
4361 | ieee80211_set_disassoc(dev, ifsta, 1); | |
4362 | return 0; | |
4363 | } | |
4364 | ||
4365 | ||
4366 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
4367 | { | |
4368 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4369 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4370 | ||
4371 | printk(KERN_DEBUG "%s: disassociate(reason=%d)\n", | |
4372 | dev->name, reason); | |
4373 | ||
51fb61e7 | 4374 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4375 | return -EINVAL; |
4376 | ||
d6f2da5b | 4377 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4378 | return -1; |
4379 | ||
4380 | ieee80211_send_disassoc(dev, ifsta, reason); | |
4381 | ieee80211_set_disassoc(dev, ifsta, 0); | |
4382 | return 0; | |
4383 | } | |
84363e6e MA |
4384 | |
4385 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
4386 | enum ieee80211_notification_types notif_type) | |
4387 | { | |
4388 | struct ieee80211_local *local = hw_to_local(hw); | |
4389 | struct ieee80211_sub_if_data *sdata; | |
4390 | ||
4391 | switch (notif_type) { | |
4392 | case IEEE80211_NOTIFY_RE_ASSOC: | |
4393 | rcu_read_lock(); | |
4394 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
4395 | ||
4396 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { | |
4397 | ieee80211_sta_req_auth(sdata->dev, | |
4398 | &sdata->u.sta); | |
4399 | } | |
4400 | ||
4401 | } | |
4402 | rcu_read_unlock(); | |
4403 | break; | |
4404 | } | |
4405 | } | |
4406 | EXPORT_SYMBOL(ieee80211_notify_mac); |