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); |
3e122be0 | 81 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
f0706e82 JB |
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; | |
f2df3859 AK |
207 | case WLAN_EID_CHANNEL_SWITCH: |
208 | elems->ch_switch_elem = pos; | |
209 | elems->ch_switch_elem_len = elen; | |
210 | break; | |
211 | case WLAN_EID_QUIET: | |
212 | if (!elems->quiet_elem) { | |
213 | elems->quiet_elem = pos; | |
214 | elems->quiet_elem_len = elen; | |
215 | } | |
216 | elems->num_of_quiet_elem++; | |
217 | break; | |
218 | case WLAN_EID_COUNTRY: | |
219 | elems->country_elem = pos; | |
220 | elems->country_elem_len = elen; | |
221 | break; | |
222 | case WLAN_EID_PWR_CONSTRAINT: | |
223 | elems->pwr_constr_elem = pos; | |
224 | elems->pwr_constr_elem_len = elen; | |
225 | break; | |
f0706e82 | 226 | default: |
f0706e82 JB |
227 | break; |
228 | } | |
229 | ||
230 | left -= elen; | |
231 | pos += elen; | |
232 | } | |
f0706e82 JB |
233 | } |
234 | ||
235 | ||
f0706e82 JB |
236 | static int ecw2cw(int ecw) |
237 | { | |
ac2bf324 | 238 | return (1 << ecw) - 1; |
f0706e82 JB |
239 | } |
240 | ||
e2839d8f VK |
241 | |
242 | static void ieee80211_sta_def_wmm_params(struct net_device *dev, | |
243 | struct ieee80211_sta_bss *bss, | |
244 | int ibss) | |
245 | { | |
246 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
247 | struct ieee80211_local *local = sdata->local; | |
248 | int i, have_higher_than_11mbit = 0; | |
249 | ||
250 | ||
251 | /* cf. IEEE 802.11 9.2.12 */ | |
252 | for (i = 0; i < bss->supp_rates_len; i++) | |
253 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
254 | have_higher_than_11mbit = 1; | |
255 | ||
256 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
257 | have_higher_than_11mbit) | |
258 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
259 | else | |
260 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
261 | ||
262 | ||
263 | if (local->ops->conf_tx) { | |
264 | struct ieee80211_tx_queue_params qparam; | |
e2839d8f VK |
265 | |
266 | memset(&qparam, 0, sizeof(qparam)); | |
267 | ||
268 | qparam.aifs = 2; | |
269 | ||
270 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
271 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
272 | qparam.cw_min = 31; | |
273 | else | |
274 | qparam.cw_min = 15; | |
275 | ||
276 | qparam.cw_max = 1023; | |
277 | qparam.txop = 0; | |
278 | ||
e100bb64 JB |
279 | for (i = 0; i < local_to_hw(local)->queues; i++) |
280 | local->ops->conf_tx(local_to_hw(local), i, &qparam); | |
e2839d8f VK |
281 | } |
282 | } | |
283 | ||
f0706e82 JB |
284 | static void ieee80211_sta_wmm_params(struct net_device *dev, |
285 | struct ieee80211_if_sta *ifsta, | |
286 | u8 *wmm_param, size_t wmm_param_len) | |
287 | { | |
288 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
289 | struct ieee80211_tx_queue_params params; | |
290 | size_t left; | |
291 | int count; | |
292 | u8 *pos; | |
293 | ||
3434fbd3 JB |
294 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
295 | return; | |
296 | ||
297 | if (!wmm_param) | |
298 | return; | |
299 | ||
f0706e82 JB |
300 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
301 | return; | |
302 | count = wmm_param[6] & 0x0f; | |
303 | if (count == ifsta->wmm_last_param_set) | |
304 | return; | |
305 | ifsta->wmm_last_param_set = count; | |
306 | ||
307 | pos = wmm_param + 8; | |
308 | left = wmm_param_len - 8; | |
309 | ||
310 | memset(¶ms, 0, sizeof(params)); | |
311 | ||
312 | if (!local->ops->conf_tx) | |
313 | return; | |
314 | ||
315 | local->wmm_acm = 0; | |
316 | for (; left >= 4; left -= 4, pos += 4) { | |
317 | int aci = (pos[0] >> 5) & 0x03; | |
318 | int acm = (pos[0] >> 4) & 0x01; | |
319 | int queue; | |
320 | ||
321 | switch (aci) { | |
322 | case 1: | |
e100bb64 | 323 | queue = 3; |
988c0f72 | 324 | if (acm) |
f0706e82 | 325 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
326 | break; |
327 | case 2: | |
e100bb64 | 328 | queue = 1; |
988c0f72 | 329 | if (acm) |
f0706e82 | 330 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
331 | break; |
332 | case 3: | |
e100bb64 | 333 | queue = 0; |
988c0f72 | 334 | if (acm) |
f0706e82 | 335 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
336 | break; |
337 | case 0: | |
338 | default: | |
e100bb64 | 339 | queue = 2; |
988c0f72 | 340 | if (acm) |
f0706e82 | 341 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
342 | break; |
343 | } | |
344 | ||
345 | params.aifs = pos[0] & 0x0f; | |
346 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
347 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 348 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 349 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 350 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 351 | "cWmin=%d cWmax=%d txop=%d\n", |
f0706e82 | 352 | dev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
353 | params.cw_max, params.txop); |
354 | #endif | |
f0706e82 JB |
355 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
356 | * AC for now) */ | |
357 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
358 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
359 | "parameters for queue %d\n", dev->name, queue); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
50c4afb9 JL |
364 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
365 | bool use_protection, | |
366 | bool use_short_preamble) | |
5628221c | 367 | { |
471b3efd | 368 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
ebd74487 | 369 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 370 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 371 | DECLARE_MAC_BUF(mac); |
ebd74487 | 372 | #endif |
471b3efd | 373 | u32 changed = 0; |
5628221c | 374 | |
471b3efd | 375 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 376 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c DD |
377 | if (net_ratelimit()) { |
378 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 379 | "%s)\n", |
471b3efd | 380 | sdata->dev->name, |
5628221c | 381 | use_protection ? "enabled" : "disabled", |
0795af57 | 382 | print_mac(mac, ifsta->bssid)); |
5628221c | 383 | } |
f4ea83dd | 384 | #endif |
471b3efd JB |
385 | bss_conf->use_cts_prot = use_protection; |
386 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 387 | } |
7e9ed188 | 388 | |
d43c7b37 | 389 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 390 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
391 | if (net_ratelimit()) { |
392 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 393 | " (BSSID=%s)\n", |
471b3efd | 394 | sdata->dev->name, |
d43c7b37 | 395 | use_short_preamble ? "short" : "long", |
0795af57 | 396 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 397 | } |
f4ea83dd | 398 | #endif |
d43c7b37 | 399 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 400 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 401 | } |
d9430a32 | 402 | |
471b3efd | 403 | return changed; |
5628221c DD |
404 | } |
405 | ||
50c4afb9 JL |
406 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
407 | u8 erp_value) | |
408 | { | |
409 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
410 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
411 | ||
412 | return ieee80211_handle_protect_preamb(sdata, | |
413 | use_protection, use_short_preamble); | |
414 | } | |
415 | ||
416 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
417 | struct ieee80211_sta_bss *bss) | |
418 | { | |
419 | u32 changed = 0; | |
420 | ||
421 | if (bss->has_erp_value) | |
422 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
423 | else { | |
424 | u16 capab = bss->capability; | |
425 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
426 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
427 | } | |
428 | ||
429 | return changed; | |
430 | } | |
431 | ||
c7153508 RR |
432 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
433 | struct ieee80211_ht_info *ht_info) | |
434 | { | |
435 | ||
436 | if (ht_info == NULL) | |
437 | return -EINVAL; | |
438 | ||
439 | memset(ht_info, 0, sizeof(*ht_info)); | |
440 | ||
441 | if (ht_cap_ie) { | |
442 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
443 | ||
444 | ht_info->ht_supported = 1; | |
445 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
446 | ht_info->ampdu_factor = | |
447 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
448 | ht_info->ampdu_density = | |
449 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
450 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
451 | } else | |
452 | ht_info->ht_supported = 0; | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
458 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
459 | struct ieee80211_ht_bss_info *bss_info) | |
460 | { | |
461 | if (bss_info == NULL) | |
462 | return -EINVAL; | |
463 | ||
464 | memset(bss_info, 0, sizeof(*bss_info)); | |
465 | ||
466 | if (ht_add_info_ie) { | |
467 | u16 op_mode; | |
468 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
469 | ||
470 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
471 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
472 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
473 | } | |
474 | ||
475 | return 0; | |
476 | } | |
5628221c | 477 | |
f0706e82 JB |
478 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
479 | struct ieee80211_if_sta *ifsta) | |
480 | { | |
f0706e82 JB |
481 | union iwreq_data wrqu; |
482 | ||
f0706e82 | 483 | if (ifsta->assocreq_ies) { |
087d833e JM |
484 | memset(&wrqu, 0, sizeof(wrqu)); |
485 | wrqu.data.length = ifsta->assocreq_ies_len; | |
486 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, | |
487 | ifsta->assocreq_ies); | |
f0706e82 | 488 | } |
f0706e82 | 489 | |
087d833e JM |
490 | if (ifsta->assocresp_ies) { |
491 | memset(&wrqu, 0, sizeof(wrqu)); | |
492 | wrqu.data.length = ifsta->assocresp_ies_len; | |
493 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, | |
494 | ifsta->assocresp_ies); | |
f0706e82 | 495 | } |
f0706e82 JB |
496 | } |
497 | ||
498 | ||
499 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 500 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 501 | bool assoc) |
f0706e82 | 502 | { |
471b3efd JB |
503 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
504 | struct ieee80211_local *local = sdata->local; | |
38668c05 | 505 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 506 | union iwreq_data wrqu; |
471b3efd | 507 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 508 | |
f0706e82 | 509 | if (assoc) { |
5628221c | 510 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
511 | |
512 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
513 | ||
51fb61e7 | 514 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 515 | return; |
5628221c | 516 | |
65c107ab | 517 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
38668c05 | 518 | conf->channel->center_freq, |
cffdd30d | 519 | ifsta->ssid, ifsta->ssid_len); |
5628221c | 520 | if (bss) { |
21c0cbe7 TW |
521 | /* set timing information */ |
522 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
523 | sdata->bss_conf.timestamp = bss->timestamp; | |
98f7dfd8 | 524 | sdata->bss_conf.dtim_period = bss->dtim_period; |
21c0cbe7 | 525 | |
50c4afb9 | 526 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
21c0cbe7 | 527 | |
3e122be0 | 528 | ieee80211_rx_bss_put(local, bss); |
5628221c DD |
529 | } |
530 | ||
38668c05 TW |
531 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
532 | changed |= BSS_CHANGED_HT; | |
533 | sdata->bss_conf.assoc_ht = 1; | |
534 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
535 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
536 | } | |
537 | ||
d6f2da5b | 538 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
539 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
540 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
541 | ieee80211_sta_send_associnfo(dev, ifsta); | |
542 | } else { | |
8db9369f | 543 | netif_carrier_off(dev); |
85249e5f | 544 | ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid); |
d6f2da5b | 545 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
fc32f924 | 546 | changed |= ieee80211_reset_erp_info(dev); |
38668c05 TW |
547 | |
548 | sdata->bss_conf.assoc_ht = 0; | |
549 | sdata->bss_conf.ht_conf = NULL; | |
550 | sdata->bss_conf.ht_bss_conf = NULL; | |
551 | ||
f0706e82 JB |
552 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
553 | } | |
f0706e82 | 554 | ifsta->last_probe = jiffies; |
47f0c502 | 555 | ieee80211_led_assoc(local, assoc); |
471b3efd | 556 | |
b2205256 | 557 | sdata->bss_conf.assoc = assoc; |
471b3efd | 558 | ieee80211_bss_info_change_notify(sdata, changed); |
8db9369f GC |
559 | |
560 | if (assoc) | |
561 | netif_carrier_on(dev); | |
562 | ||
41a7be48 RC |
563 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
564 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
f0706e82 JB |
565 | } |
566 | ||
567 | static void ieee80211_set_disassoc(struct net_device *dev, | |
568 | struct ieee80211_if_sta *ifsta, int deauth) | |
569 | { | |
570 | if (deauth) | |
571 | ifsta->auth_tries = 0; | |
572 | ifsta->assoc_tries = 0; | |
573 | ieee80211_set_associated(dev, ifsta, 0); | |
574 | } | |
575 | ||
ee385855 LCC |
576 | void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, |
577 | int encrypt) | |
f0706e82 JB |
578 | { |
579 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 JB |
580 | |
581 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
582 | skb->dev = sdata->local->mdev; | |
583 | skb_set_mac_header(skb, 0); | |
584 | skb_set_network_header(skb, 0); | |
585 | skb_set_transport_header(skb, 0); | |
586 | ||
d0f09804 JB |
587 | skb->iif = sdata->dev->ifindex; |
588 | skb->do_not_encrypt = !encrypt; | |
f0706e82 JB |
589 | |
590 | dev_queue_xmit(skb); | |
591 | } | |
592 | ||
593 | ||
594 | static void ieee80211_send_auth(struct net_device *dev, | |
595 | struct ieee80211_if_sta *ifsta, | |
596 | int transaction, u8 *extra, size_t extra_len, | |
597 | int encrypt) | |
598 | { | |
599 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
600 | struct sk_buff *skb; | |
601 | struct ieee80211_mgmt *mgmt; | |
602 | ||
603 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
604 | sizeof(*mgmt) + 6 + extra_len); | |
605 | if (!skb) { | |
606 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
607 | "frame\n", dev->name); | |
608 | return; | |
609 | } | |
610 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
611 | ||
612 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
613 | memset(mgmt, 0, 24 + 6); | |
614 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
615 | IEEE80211_STYPE_AUTH); | |
616 | if (encrypt) | |
617 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
618 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
619 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
620 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
621 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
622 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
623 | ifsta->auth_transaction = transaction + 1; | |
624 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
625 | if (extra) | |
626 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
627 | ||
628 | ieee80211_sta_tx(dev, skb, encrypt); | |
629 | } | |
630 | ||
631 | ||
632 | static void ieee80211_authenticate(struct net_device *dev, | |
633 | struct ieee80211_if_sta *ifsta) | |
634 | { | |
0795af57 JP |
635 | DECLARE_MAC_BUF(mac); |
636 | ||
f0706e82 JB |
637 | ifsta->auth_tries++; |
638 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 639 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 640 | " timed out\n", |
0795af57 | 641 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
642 | ifsta->state = IEEE80211_DISABLED; |
643 | return; | |
644 | } | |
645 | ||
646 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
647 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
648 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
649 | |
650 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
651 | ||
652 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
653 | } | |
654 | ||
36d16ae7 HS |
655 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
656 | struct ieee80211_supported_band *sband, | |
657 | u64 *rates) | |
658 | { | |
659 | int i, j, count; | |
660 | *rates = 0; | |
661 | count = 0; | |
662 | for (i = 0; i < bss->supp_rates_len; i++) { | |
663 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
664 | ||
665 | for (j = 0; j < sband->n_bitrates; j++) | |
666 | if (sband->bitrates[j].bitrate == rate) { | |
667 | *rates |= BIT(j); | |
668 | count++; | |
669 | break; | |
670 | } | |
671 | } | |
672 | ||
673 | return count; | |
674 | } | |
f0706e82 JB |
675 | |
676 | static void ieee80211_send_assoc(struct net_device *dev, | |
677 | struct ieee80211_if_sta *ifsta) | |
678 | { | |
679 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f0706e82 JB |
680 | struct sk_buff *skb; |
681 | struct ieee80211_mgmt *mgmt; | |
682 | u8 *pos, *ies; | |
36d16ae7 | 683 | int i, len, count, rates_len, supp_rates_len; |
f0706e82 JB |
684 | u16 capab; |
685 | struct ieee80211_sta_bss *bss; | |
686 | int wmm = 0; | |
8318d78a | 687 | struct ieee80211_supported_band *sband; |
36d16ae7 | 688 | u64 rates = 0; |
f0706e82 JB |
689 | |
690 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
691 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
692 | ifsta->ssid_len); | |
693 | if (!skb) { | |
694 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
695 | "frame\n", dev->name); | |
696 | return; | |
697 | } | |
698 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
699 | ||
8318d78a JB |
700 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
701 | ||
f0706e82 | 702 | capab = ifsta->capab; |
8318d78a JB |
703 | |
704 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
705 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
706 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
707 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
708 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
f0706e82 | 709 | } |
8318d78a JB |
710 | |
711 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, | |
712 | local->hw.conf.channel->center_freq, | |
cffdd30d | 713 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
714 | if (bss) { |
715 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
716 | capab |= WLAN_CAPABILITY_PRIVACY; | |
988c0f72 | 717 | if (bss->wmm_ie) |
f0706e82 | 718 | wmm = 1; |
0d580a77 HS |
719 | |
720 | /* get all rates supported by the device and the AP as | |
721 | * some APs don't like getting a superset of their rates | |
722 | * in the association request (e.g. D-Link DAP 1353 in | |
723 | * b-only mode) */ | |
724 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
725 | ||
06ff47bc TW |
726 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
727 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
728 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
729 | ||
3e122be0 | 730 | ieee80211_rx_bss_put(local, bss); |
0d580a77 HS |
731 | } else { |
732 | rates = ~0; | |
733 | rates_len = sband->n_bitrates; | |
f0706e82 JB |
734 | } |
735 | ||
736 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
737 | memset(mgmt, 0, 24); | |
738 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
739 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
740 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
741 | ||
d6f2da5b | 742 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
743 | skb_put(skb, 10); |
744 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
745 | IEEE80211_STYPE_REASSOC_REQ); | |
746 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
ea95bba4 TW |
747 | mgmt->u.reassoc_req.listen_interval = |
748 | cpu_to_le16(local->hw.conf.listen_interval); | |
f0706e82 JB |
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); | |
ea95bba4 TW |
756 | mgmt->u.reassoc_req.listen_interval = |
757 | cpu_to_le16(local->hw.conf.listen_interval); | |
f0706e82 JB |
758 | } |
759 | ||
760 | /* SSID */ | |
761 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
762 | *pos++ = WLAN_EID_SSID; | |
763 | *pos++ = ifsta->ssid_len; | |
764 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
765 | ||
0d580a77 | 766 | /* add all rates which were marked to be used above */ |
36d16ae7 HS |
767 | supp_rates_len = rates_len; |
768 | if (supp_rates_len > 8) | |
769 | supp_rates_len = 8; | |
770 | ||
8318d78a | 771 | len = sband->n_bitrates; |
36d16ae7 | 772 | pos = skb_put(skb, supp_rates_len + 2); |
f0706e82 | 773 | *pos++ = WLAN_EID_SUPP_RATES; |
36d16ae7 | 774 | *pos++ = supp_rates_len; |
f0706e82 | 775 | |
36d16ae7 HS |
776 | count = 0; |
777 | for (i = 0; i < sband->n_bitrates; i++) { | |
778 | if (BIT(i) & rates) { | |
8318d78a | 779 | int rate = sband->bitrates[i].bitrate; |
f0706e82 | 780 | *pos++ = (u8) (rate / 5); |
36d16ae7 HS |
781 | if (++count == 8) |
782 | break; | |
783 | } | |
784 | } | |
785 | ||
8ab65b03 | 786 | if (rates_len > count) { |
36d16ae7 HS |
787 | pos = skb_put(skb, rates_len - count + 2); |
788 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
789 | *pos++ = rates_len - count; | |
790 | ||
791 | for (i++; i < sband->n_bitrates; i++) { | |
792 | if (BIT(i) & rates) { | |
793 | int rate = sband->bitrates[i].bitrate; | |
794 | *pos++ = (u8) (rate / 5); | |
795 | } | |
f0706e82 JB |
796 | } |
797 | } | |
798 | ||
06ff47bc TW |
799 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
800 | /* 1. power capabilities */ | |
801 | pos = skb_put(skb, 4); | |
802 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
803 | *pos++ = 2; | |
804 | *pos++ = 0; /* min tx power */ | |
805 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
806 | ||
807 | /* 2. supported channels */ | |
808 | /* TODO: get this in reg domain format */ | |
809 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
810 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
811 | *pos++ = 2 * sband->n_channels; | |
812 | for (i = 0; i < sband->n_channels; i++) { | |
813 | *pos++ = ieee80211_frequency_to_channel( | |
814 | sband->channels[i].center_freq); | |
815 | *pos++ = 1; /* one channel in the subband*/ | |
816 | } | |
817 | } | |
818 | ||
f0706e82 JB |
819 | if (ifsta->extra_ie) { |
820 | pos = skb_put(skb, ifsta->extra_ie_len); | |
821 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
822 | } | |
823 | ||
d6f2da5b | 824 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
825 | pos = skb_put(skb, 9); |
826 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
827 | *pos++ = 7; /* len */ | |
828 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
829 | *pos++ = 0x50; | |
830 | *pos++ = 0xf2; | |
831 | *pos++ = 2; /* WME */ | |
832 | *pos++ = 0; /* WME info */ | |
833 | *pos++ = 1; /* WME ver */ | |
834 | *pos++ = 0; | |
835 | } | |
3434fbd3 | 836 | |
c7153508 | 837 | /* wmm support is a must to HT */ |
3434fbd3 | 838 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
9306102e EG |
839 | sband->ht_info.ht_supported && bss->ht_add_ie) { |
840 | struct ieee80211_ht_addt_info *ht_add_info = | |
841 | (struct ieee80211_ht_addt_info *)bss->ht_add_ie; | |
842 | u16 cap = sband->ht_info.cap; | |
843 | __le16 tmp; | |
844 | u32 flags = local->hw.conf.channel->flags; | |
845 | ||
846 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
847 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
848 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
849 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
850 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
851 | } | |
852 | break; | |
853 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
854 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
855 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
856 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
857 | } | |
858 | break; | |
859 | } | |
860 | ||
861 | tmp = cpu_to_le16(cap); | |
c7153508 RR |
862 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
863 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
864 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
865 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
866 | memcpy(pos, &tmp, sizeof(u16)); | |
867 | pos += sizeof(u16); | |
8318d78a JB |
868 | /* TODO: needs a define here for << 2 */ |
869 | *pos++ = sband->ht_info.ampdu_factor | | |
870 | (sband->ht_info.ampdu_density << 2); | |
871 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
c7153508 | 872 | } |
f0706e82 JB |
873 | |
874 | kfree(ifsta->assocreq_ies); | |
875 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 876 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
877 | if (ifsta->assocreq_ies) |
878 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
879 | ||
880 | ieee80211_sta_tx(dev, skb, 0); | |
881 | } | |
882 | ||
883 | ||
884 | static void ieee80211_send_deauth(struct net_device *dev, | |
885 | struct ieee80211_if_sta *ifsta, u16 reason) | |
886 | { | |
887 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
888 | struct sk_buff *skb; | |
889 | struct ieee80211_mgmt *mgmt; | |
890 | ||
891 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
892 | if (!skb) { | |
893 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
894 | "frame\n", dev->name); | |
895 | return; | |
896 | } | |
897 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
898 | ||
899 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
900 | memset(mgmt, 0, 24); | |
901 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
902 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
903 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
904 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
905 | IEEE80211_STYPE_DEAUTH); | |
906 | skb_put(skb, 2); | |
907 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
908 | ||
909 | ieee80211_sta_tx(dev, skb, 0); | |
910 | } | |
911 | ||
912 | ||
913 | static void ieee80211_send_disassoc(struct net_device *dev, | |
914 | struct ieee80211_if_sta *ifsta, u16 reason) | |
915 | { | |
916 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
917 | struct sk_buff *skb; | |
918 | struct ieee80211_mgmt *mgmt; | |
919 | ||
920 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
921 | if (!skb) { | |
922 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
923 | "frame\n", dev->name); | |
924 | return; | |
925 | } | |
926 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
927 | ||
928 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
929 | memset(mgmt, 0, 24); | |
930 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
931 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
932 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
933 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
934 | IEEE80211_STYPE_DISASSOC); | |
935 | skb_put(skb, 2); | |
936 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
937 | ||
938 | ieee80211_sta_tx(dev, skb, 0); | |
939 | } | |
940 | ||
941 | ||
942 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
943 | struct ieee80211_if_sta *ifsta) | |
944 | { | |
65c107ab | 945 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 946 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
947 | int bss_privacy; |
948 | int wep_privacy; | |
949 | int privacy_invoked; | |
f0706e82 | 950 | |
5b98b1f7 | 951 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
952 | return 0; |
953 | ||
8318d78a JB |
954 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
955 | local->hw.conf.channel->center_freq, | |
cffdd30d | 956 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
957 | if (!bss) |
958 | return 0; | |
959 | ||
5b98b1f7 JB |
960 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
961 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
962 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 | 963 | |
3e122be0 | 964 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 965 | |
5b98b1f7 JB |
966 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
967 | return 0; | |
968 | ||
969 | return 1; | |
f0706e82 JB |
970 | } |
971 | ||
972 | ||
973 | static void ieee80211_associate(struct net_device *dev, | |
974 | struct ieee80211_if_sta *ifsta) | |
975 | { | |
0795af57 JP |
976 | DECLARE_MAC_BUF(mac); |
977 | ||
f0706e82 JB |
978 | ifsta->assoc_tries++; |
979 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 980 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 981 | " timed out\n", |
0795af57 | 982 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
983 | ifsta->state = IEEE80211_DISABLED; |
984 | return; | |
985 | } | |
986 | ||
987 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
988 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
989 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
990 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
991 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
992 | "mixed-cell disabled - abort association\n", dev->name); | |
993 | ifsta->state = IEEE80211_DISABLED; | |
994 | return; | |
995 | } | |
996 | ||
997 | ieee80211_send_assoc(dev, ifsta); | |
998 | ||
999 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
1000 | } | |
1001 | ||
1002 | ||
1003 | static void ieee80211_associated(struct net_device *dev, | |
1004 | struct ieee80211_if_sta *ifsta) | |
1005 | { | |
1006 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1007 | struct sta_info *sta; | |
1008 | int disassoc; | |
0795af57 | 1009 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1010 | |
1011 | /* TODO: start monitoring current AP signal quality and number of | |
1012 | * missed beacons. Scan other channels every now and then and search | |
1013 | * for better APs. */ | |
1014 | /* TODO: remove expired BSSes */ | |
1015 | ||
1016 | ifsta->state = IEEE80211_ASSOCIATED; | |
1017 | ||
d0709a65 JB |
1018 | rcu_read_lock(); |
1019 | ||
f0706e82 JB |
1020 | sta = sta_info_get(local, ifsta->bssid); |
1021 | if (!sta) { | |
0795af57 JP |
1022 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
1023 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1024 | disassoc = 1; |
1025 | } else { | |
1026 | disassoc = 0; | |
1027 | if (time_after(jiffies, | |
1028 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 1029 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 1030 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 1031 | "current AP %s - assume out of " |
f0706e82 | 1032 | "range\n", |
0795af57 | 1033 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 1034 | disassoc = 1; |
d0709a65 | 1035 | sta_info_unlink(&sta); |
d6f2da5b | 1036 | } else |
f0706e82 JB |
1037 | ieee80211_send_probe_req(dev, ifsta->bssid, |
1038 | local->scan_ssid, | |
1039 | local->scan_ssid_len); | |
d6f2da5b | 1040 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 1041 | } else { |
d6f2da5b | 1042 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
1043 | if (time_after(jiffies, ifsta->last_probe + |
1044 | IEEE80211_PROBE_INTERVAL)) { | |
1045 | ifsta->last_probe = jiffies; | |
1046 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
1047 | ifsta->ssid, | |
1048 | ifsta->ssid_len); | |
1049 | } | |
1050 | } | |
f0706e82 | 1051 | } |
d0709a65 JB |
1052 | |
1053 | rcu_read_unlock(); | |
1054 | ||
3b96766f | 1055 | if (disassoc && sta) |
d0709a65 | 1056 | sta_info_destroy(sta); |
d0709a65 | 1057 | |
f0706e82 | 1058 | if (disassoc) { |
2d192d95 MW |
1059 | ifsta->state = IEEE80211_DISABLED; |
1060 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
1061 | } else { |
1062 | mod_timer(&ifsta->timer, jiffies + | |
1063 | IEEE80211_MONITORING_INTERVAL); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | ||
1068 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
1069 | u8 *ssid, size_t ssid_len) | |
1070 | { | |
1071 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 1072 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
1073 | struct sk_buff *skb; |
1074 | struct ieee80211_mgmt *mgmt; | |
1075 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
1076 | int i; | |
1077 | ||
1078 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
1079 | if (!skb) { | |
1080 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
1081 | "request\n", dev->name); | |
1082 | return; | |
1083 | } | |
1084 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1085 | ||
1086 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1087 | memset(mgmt, 0, 24); | |
1088 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1089 | IEEE80211_STYPE_PROBE_REQ); | |
1090 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1091 | if (dst) { | |
1092 | memcpy(mgmt->da, dst, ETH_ALEN); | |
1093 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
1094 | } else { | |
1095 | memset(mgmt->da, 0xff, ETH_ALEN); | |
1096 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
1097 | } | |
1098 | pos = skb_put(skb, 2 + ssid_len); | |
1099 | *pos++ = WLAN_EID_SSID; | |
1100 | *pos++ = ssid_len; | |
1101 | memcpy(pos, ssid, ssid_len); | |
1102 | ||
1103 | supp_rates = skb_put(skb, 2); | |
1104 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
1105 | supp_rates[1] = 0; | |
8318d78a JB |
1106 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
1107 | ||
1108 | for (i = 0; i < sband->n_bitrates; i++) { | |
1109 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
f0706e82 JB |
1110 | if (esupp_rates) { |
1111 | pos = skb_put(skb, 1); | |
1112 | esupp_rates[1]++; | |
1113 | } else if (supp_rates[1] == 8) { | |
1114 | esupp_rates = skb_put(skb, 3); | |
1115 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
1116 | esupp_rates[1] = 1; | |
1117 | pos = &esupp_rates[2]; | |
1118 | } else { | |
1119 | pos = skb_put(skb, 1); | |
1120 | supp_rates[1]++; | |
1121 | } | |
8318d78a | 1122 | *pos = rate->bitrate / 5; |
f0706e82 JB |
1123 | } |
1124 | ||
1125 | ieee80211_sta_tx(dev, skb, 0); | |
1126 | } | |
1127 | ||
1128 | ||
1129 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
1130 | { | |
1131 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1132 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 1133 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
1134 | return 0; |
1135 | return 1; | |
1136 | } | |
1137 | ||
1138 | ||
1139 | static void ieee80211_auth_completed(struct net_device *dev, | |
1140 | struct ieee80211_if_sta *ifsta) | |
1141 | { | |
1142 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 1143 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1144 | ieee80211_associate(dev, ifsta); |
1145 | } | |
1146 | ||
1147 | ||
1148 | static void ieee80211_auth_challenge(struct net_device *dev, | |
1149 | struct ieee80211_if_sta *ifsta, | |
1150 | struct ieee80211_mgmt *mgmt, | |
1151 | size_t len) | |
1152 | { | |
1153 | u8 *pos; | |
1154 | struct ieee802_11_elems elems; | |
1155 | ||
f0706e82 | 1156 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1157 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1158 | if (!elems.challenge) |
f0706e82 | 1159 | return; |
f0706e82 JB |
1160 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, |
1161 | elems.challenge_len + 2, 1); | |
1162 | } | |
1163 | ||
9f985b0e RR |
1164 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
1165 | u8 dialog_token, u16 status, u16 policy, | |
1166 | u16 buf_size, u16 timeout) | |
1167 | { | |
1168 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1169 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1170 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1171 | struct sk_buff *skb; | |
1172 | struct ieee80211_mgmt *mgmt; | |
1173 | u16 capab; | |
1174 | ||
3acea5b6 EK |
1175 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
1176 | ||
9f985b0e RR |
1177 | if (!skb) { |
1178 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1179 | "for addba resp frame\n", dev->name); | |
1180 | return; | |
1181 | } | |
1182 | ||
1183 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1184 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1185 | memset(mgmt, 0, 24); | |
1186 | memcpy(mgmt->da, da, ETH_ALEN); | |
1187 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1188 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1189 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1190 | else | |
1191 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1192 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1193 | IEEE80211_STYPE_ACTION); | |
1194 | ||
1195 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1196 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1197 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1198 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1199 | ||
1200 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1201 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1202 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1203 | ||
1204 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1205 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1206 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1207 | ||
1208 | ieee80211_sta_tx(dev, skb, 0); | |
1209 | ||
1210 | return; | |
1211 | } | |
1212 | ||
eadc8d9e RR |
1213 | void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, |
1214 | u16 tid, u8 dialog_token, u16 start_seq_num, | |
1215 | u16 agg_size, u16 timeout) | |
1216 | { | |
1217 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1218 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1219 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1220 | struct sk_buff *skb; | |
1221 | struct ieee80211_mgmt *mgmt; | |
1222 | u16 capab; | |
1223 | ||
3acea5b6 | 1224 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
eadc8d9e RR |
1225 | |
1226 | if (!skb) { | |
1227 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1228 | "for addba request frame\n", dev->name); | |
1229 | return; | |
1230 | } | |
1231 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1232 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1233 | memset(mgmt, 0, 24); | |
1234 | memcpy(mgmt->da, da, ETH_ALEN); | |
1235 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1236 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
1237 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); | |
1238 | else | |
1239 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1240 | ||
1241 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1242 | IEEE80211_STYPE_ACTION); | |
1243 | ||
1244 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); | |
1245 | ||
1246 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1247 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; | |
1248 | ||
1249 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; | |
1250 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ | |
1251 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1252 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ | |
1253 | ||
1254 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); | |
1255 | ||
1256 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); | |
1257 | mgmt->u.action.u.addba_req.start_seq_num = | |
1258 | cpu_to_le16(start_seq_num << 4); | |
1259 | ||
1260 | ieee80211_sta_tx(dev, skb, 0); | |
1261 | } | |
1262 | ||
9f985b0e RR |
1263 | static void ieee80211_sta_process_addba_request(struct net_device *dev, |
1264 | struct ieee80211_mgmt *mgmt, | |
1265 | size_t len) | |
1266 | { | |
1267 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1268 | struct ieee80211_hw *hw = &local->hw; |
1269 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1270 | struct sta_info *sta; |
07db2183 RR |
1271 | struct tid_ampdu_rx *tid_agg_rx; |
1272 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1273 | u8 dialog_token; |
07db2183 RR |
1274 | int ret = -EOPNOTSUPP; |
1275 | DECLARE_MAC_BUF(mac); | |
9f985b0e | 1276 | |
d0709a65 JB |
1277 | rcu_read_lock(); |
1278 | ||
9f985b0e | 1279 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1280 | if (!sta) { |
1281 | rcu_read_unlock(); | |
9f985b0e | 1282 | return; |
d0709a65 | 1283 | } |
9f985b0e RR |
1284 | |
1285 | /* extract session parameters from addba request frame */ | |
1286 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1287 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1288 | start_seq_num = |
1289 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1290 | |
1291 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1292 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1293 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1294 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1295 | ||
9f985b0e RR |
1296 | status = WLAN_STATUS_REQUEST_DECLINED; |
1297 | ||
07db2183 RR |
1298 | /* sanity check for incoming parameters: |
1299 | * check if configuration can support the BA policy | |
1300 | * and if buffer size does not exceeds max value */ | |
1301 | if (((ba_policy != 1) | |
1302 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1303 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1304 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1305 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1306 | if (net_ratelimit()) | |
7b9d44cd | 1307 | printk(KERN_DEBUG "AddBA Req with bad params from " |
07db2183 RR |
1308 | "%s on tid %u. policy %d, buffer size %d\n", |
1309 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1310 | buf_size); | |
1311 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1312 | goto end_no_lock; | |
1313 | } | |
1314 | /* determine default buffer size */ | |
1315 | if (buf_size == 0) { | |
8318d78a JB |
1316 | struct ieee80211_supported_band *sband; |
1317 | ||
1318 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1319 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1320 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1321 | } |
1322 | ||
07db2183 RR |
1323 | |
1324 | /* examine state machine */ | |
07346f81 | 1325 | spin_lock_bh(&sta->lock); |
07db2183 | 1326 | |
cee24a3e | 1327 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
07db2183 RR |
1328 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1329 | if (net_ratelimit()) | |
7b9d44cd | 1330 | printk(KERN_DEBUG "unexpected AddBA Req from " |
07db2183 RR |
1331 | "%s on tid %u\n", |
1332 | print_mac(mac, mgmt->sa), tid); | |
1333 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1334 | goto end; | |
1335 | } | |
1336 | ||
cee24a3e RR |
1337 | /* prepare A-MPDU MLME for Rx aggregation */ |
1338 | sta->ampdu_mlme.tid_rx[tid] = | |
1339 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); | |
1340 | if (!sta->ampdu_mlme.tid_rx[tid]) { | |
f4ea83dd | 1341 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
1342 | if (net_ratelimit()) |
1343 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", | |
1344 | tid); | |
f4ea83dd | 1345 | #endif |
cee24a3e RR |
1346 | goto end; |
1347 | } | |
1348 | /* rx timer */ | |
1349 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = | |
1350 | sta_rx_agg_session_timer_expired; | |
1351 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = | |
1352 | (unsigned long)&sta->timer_to_tid[tid]; | |
1353 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); | |
1354 | ||
1355 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; | |
1356 | ||
07db2183 RR |
1357 | /* prepare reordering buffer */ |
1358 | tid_agg_rx->reorder_buf = | |
c97c23e3 | 1359 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
03147dfc | 1360 | if (!tid_agg_rx->reorder_buf) { |
f4ea83dd | 1361 | #ifdef CONFIG_MAC80211_HT_DEBUG |
03147dfc JB |
1362 | if (net_ratelimit()) |
1363 | printk(KERN_ERR "can not allocate reordering buffer " | |
1364 | "to tid %d\n", tid); | |
f4ea83dd | 1365 | #endif |
cee24a3e | 1366 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
07db2183 RR |
1367 | goto end; |
1368 | } | |
1369 | memset(tid_agg_rx->reorder_buf, 0, | |
c97c23e3 | 1370 | buf_size * sizeof(struct sk_buff *)); |
07db2183 RR |
1371 | |
1372 | if (local->ops->ampdu_action) | |
1373 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1374 | sta->addr, tid, &start_seq_num); |
07db2183 | 1375 | #ifdef CONFIG_MAC80211_HT_DEBUG |
513a1025 | 1376 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
07db2183 RR |
1377 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
1378 | ||
1379 | if (ret) { | |
1380 | kfree(tid_agg_rx->reorder_buf); | |
cee24a3e RR |
1381 | kfree(tid_agg_rx); |
1382 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
07db2183 RR |
1383 | goto end; |
1384 | } | |
1385 | ||
1386 | /* change state and send addba resp */ | |
cee24a3e | 1387 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
07db2183 RR |
1388 | tid_agg_rx->dialog_token = dialog_token; |
1389 | tid_agg_rx->ssn = start_seq_num; | |
1390 | tid_agg_rx->head_seq_num = start_seq_num; | |
1391 | tid_agg_rx->buf_size = buf_size; | |
1392 | tid_agg_rx->timeout = timeout; | |
1393 | tid_agg_rx->stored_mpdu_num = 0; | |
1394 | status = WLAN_STATUS_SUCCESS; | |
1395 | end: | |
07346f81 | 1396 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1397 | |
1398 | end_no_lock: | |
d0709a65 JB |
1399 | ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid, |
1400 | dialog_token, status, 1, buf_size, timeout); | |
1401 | rcu_read_unlock(); | |
9f985b0e | 1402 | } |
f0706e82 | 1403 | |
eadc8d9e RR |
1404 | static void ieee80211_sta_process_addba_resp(struct net_device *dev, |
1405 | struct ieee80211_mgmt *mgmt, | |
1406 | size_t len) | |
1407 | { | |
1408 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1409 | struct ieee80211_hw *hw = &local->hw; | |
1410 | struct sta_info *sta; | |
1411 | u16 capab; | |
1412 | u16 tid; | |
1413 | u8 *state; | |
1414 | ||
d0709a65 JB |
1415 | rcu_read_lock(); |
1416 | ||
eadc8d9e | 1417 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1418 | if (!sta) { |
1419 | rcu_read_unlock(); | |
eadc8d9e | 1420 | return; |
d0709a65 | 1421 | } |
eadc8d9e RR |
1422 | |
1423 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1424 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1425 | ||
cee24a3e | 1426 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1427 | |
07346f81 | 1428 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1429 | |
cee24a3e | 1430 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1431 | spin_unlock_bh(&sta->lock); |
cee24a3e RR |
1432 | goto addba_resp_exit; |
1433 | } | |
1434 | ||
eadc8d9e | 1435 | if (mgmt->u.action.u.addba_resp.dialog_token != |
cee24a3e | 1436 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
07346f81 | 1437 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1438 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1439 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1440 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 1441 | goto addba_resp_exit; |
eadc8d9e RR |
1442 | } |
1443 | ||
cee24a3e | 1444 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e RR |
1445 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1446 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1447 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1448 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1449 | == WLAN_STATUS_SUCCESS) { | |
eadc8d9e | 1450 | *state |= HT_ADDBA_RECEIVED_MSK; |
cee24a3e | 1451 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
eadc8d9e | 1452 | |
f4ea83dd | 1453 | if (*state == HT_AGG_STATE_OPERATIONAL) |
eadc8d9e | 1454 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
eadc8d9e | 1455 | |
07346f81 | 1456 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 1457 | } else { |
cee24a3e | 1458 | sta->ampdu_mlme.addba_req_num[tid]++; |
eadc8d9e RR |
1459 | /* this will allow the state check in stop_BA_session */ |
1460 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1461 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1462 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
1463 | WLAN_BACK_INITIATOR); | |
1464 | } | |
cee24a3e RR |
1465 | |
1466 | addba_resp_exit: | |
d0709a65 | 1467 | rcu_read_unlock(); |
eadc8d9e RR |
1468 | } |
1469 | ||
1470 | void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, | |
1471 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1472 | { |
1473 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1474 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1475 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1476 | struct sk_buff *skb; | |
1477 | struct ieee80211_mgmt *mgmt; | |
1478 | u16 params; | |
1479 | ||
3acea5b6 | 1480 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
07db2183 RR |
1481 | |
1482 | if (!skb) { | |
1483 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1484 | "for delba frame\n", dev->name); | |
1485 | return; | |
1486 | } | |
1487 | ||
1488 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1489 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1490 | memset(mgmt, 0, 24); | |
1491 | memcpy(mgmt->da, da, ETH_ALEN); | |
1492 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1493 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1494 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1495 | else | |
1496 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1497 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1498 | IEEE80211_STYPE_ACTION); | |
1499 | ||
1500 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1501 | ||
1502 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1503 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1504 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1505 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1506 | ||
1507 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1508 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1509 | ||
1510 | ieee80211_sta_tx(dev, skb, 0); | |
1511 | } | |
1512 | ||
429a3805 RR |
1513 | void ieee80211_send_bar(struct net_device *dev, u8 *ra, u16 tid, u16 ssn) |
1514 | { | |
1515 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1516 | struct sk_buff *skb; | |
1517 | struct ieee80211_bar *bar; | |
1518 | u16 bar_control = 0; | |
1519 | ||
1520 | skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom); | |
1521 | if (!skb) { | |
1522 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
1523 | "bar frame\n", dev->name); | |
1524 | return; | |
1525 | } | |
1526 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1527 | bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar)); | |
1528 | memset(bar, 0, sizeof(*bar)); | |
1529 | bar->frame_control = IEEE80211_FC(IEEE80211_FTYPE_CTL, | |
1530 | IEEE80211_STYPE_BACK_REQ); | |
1531 | memcpy(bar->ra, ra, ETH_ALEN); | |
1532 | memcpy(bar->ta, dev->dev_addr, ETH_ALEN); | |
1533 | bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL; | |
1534 | bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA; | |
1535 | bar_control |= (u16)(tid << 12); | |
1536 | bar->control = cpu_to_le16(bar_control); | |
1537 | bar->start_seq_num = cpu_to_le16(ssn); | |
1538 | ||
1539 | ieee80211_sta_tx(dev, skb, 0); | |
1540 | } | |
1541 | ||
07db2183 RR |
1542 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, |
1543 | u16 initiator, u16 reason) | |
1544 | { | |
1545 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1546 | struct ieee80211_hw *hw = &local->hw; | |
1547 | struct sta_info *sta; | |
b580781e | 1548 | int ret, i; |
513a1025 | 1549 | DECLARE_MAC_BUF(mac); |
07db2183 | 1550 | |
d0709a65 JB |
1551 | rcu_read_lock(); |
1552 | ||
07db2183 | 1553 | sta = sta_info_get(local, ra); |
d0709a65 JB |
1554 | if (!sta) { |
1555 | rcu_read_unlock(); | |
07db2183 | 1556 | return; |
d0709a65 | 1557 | } |
07db2183 RR |
1558 | |
1559 | /* check if TID is in operational state */ | |
07346f81 | 1560 | spin_lock_bh(&sta->lock); |
cee24a3e | 1561 | if (sta->ampdu_mlme.tid_state_rx[tid] |
07db2183 | 1562 | != HT_AGG_STATE_OPERATIONAL) { |
07346f81 | 1563 | spin_unlock_bh(&sta->lock); |
d0709a65 | 1564 | rcu_read_unlock(); |
07db2183 RR |
1565 | return; |
1566 | } | |
cee24a3e | 1567 | sta->ampdu_mlme.tid_state_rx[tid] = |
07db2183 RR |
1568 | HT_AGG_STATE_REQ_STOP_BA_MSK | |
1569 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
07346f81 | 1570 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1571 | |
1572 | /* stop HW Rx aggregation. ampdu_action existence | |
1573 | * already verified in session init so we add the BUG_ON */ | |
1574 | BUG_ON(!local->ops->ampdu_action); | |
1575 | ||
513a1025 RR |
1576 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1577 | printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", | |
1578 | print_mac(mac, ra), tid); | |
1579 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1580 | ||
07db2183 | 1581 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, |
0df3ef45 | 1582 | ra, tid, NULL); |
07db2183 RR |
1583 | if (ret) |
1584 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
f4ea83dd | 1585 | "aggregation for tid %d\n", tid); |
07db2183 RR |
1586 | |
1587 | /* shutdown timer has not expired */ | |
1588 | if (initiator != WLAN_BACK_TIMER) | |
cee24a3e | 1589 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
07db2183 RR |
1590 | |
1591 | /* check if this is a self generated aggregation halt */ | |
1592 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1593 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1594 | ||
1595 | /* free the reordering buffer */ | |
cee24a3e RR |
1596 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { |
1597 | if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { | |
b580781e | 1598 | /* release the reordered frames */ |
cee24a3e RR |
1599 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); |
1600 | sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; | |
1601 | sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; | |
b580781e RR |
1602 | } |
1603 | } | |
cee24a3e RR |
1604 | /* free resources */ |
1605 | kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); | |
1606 | kfree(sta->ampdu_mlme.tid_rx[tid]); | |
1607 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
1608 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; | |
07db2183 | 1609 | |
d0709a65 | 1610 | rcu_read_unlock(); |
07db2183 RR |
1611 | } |
1612 | ||
eadc8d9e | 1613 | |
688b88a4 RR |
1614 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1615 | struct ieee80211_mgmt *mgmt, size_t len) | |
1616 | { | |
1617 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1618 | struct sta_info *sta; | |
1619 | u16 tid, params; | |
1620 | u16 initiator; | |
1621 | DECLARE_MAC_BUF(mac); | |
1622 | ||
d0709a65 JB |
1623 | rcu_read_lock(); |
1624 | ||
688b88a4 | 1625 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1626 | if (!sta) { |
1627 | rcu_read_unlock(); | |
688b88a4 | 1628 | return; |
d0709a65 | 1629 | } |
688b88a4 RR |
1630 | |
1631 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1632 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1633 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1634 | ||
1635 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1636 | if (net_ratelimit()) | |
d92684e6 RR |
1637 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1638 | print_mac(mac, mgmt->sa), | |
2e354ed7 | 1639 | initiator ? "initiator" : "recipient", tid, |
688b88a4 RR |
1640 | mgmt->u.action.u.delba.reason_code); |
1641 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1642 | ||
1643 | if (initiator == WLAN_BACK_INITIATOR) | |
1644 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1645 | WLAN_BACK_INITIATOR, 0); | |
d92684e6 | 1646 | else { /* WLAN_BACK_RECIPIENT */ |
07346f81 | 1647 | spin_lock_bh(&sta->lock); |
cee24a3e | 1648 | sta->ampdu_mlme.tid_state_tx[tid] = |
d92684e6 | 1649 | HT_AGG_STATE_OPERATIONAL; |
07346f81 | 1650 | spin_unlock_bh(&sta->lock); |
d92684e6 RR |
1651 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
1652 | WLAN_BACK_RECIPIENT); | |
1653 | } | |
d0709a65 | 1654 | rcu_read_unlock(); |
688b88a4 RR |
1655 | } |
1656 | ||
eadc8d9e RR |
1657 | /* |
1658 | * After sending add Block Ack request we activated a timer until | |
1659 | * add Block Ack response will arrive from the recipient. | |
1660 | * If this timer expires sta_addba_resp_timer_expired will be executed. | |
1661 | */ | |
1662 | void sta_addba_resp_timer_expired(unsigned long data) | |
1663 | { | |
1664 | /* not an elegant detour, but there is no choice as the timer passes | |
1665 | * only one argument, and both sta_info and TID are needed, so init | |
73651ee6 | 1666 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
eadc8d9e | 1667 | * array gives the sta through container_of */ |
70d251b2 | 1668 | u16 tid = *(u8 *)data; |
eadc8d9e RR |
1669 | struct sta_info *temp_sta = container_of((void *)data, |
1670 | struct sta_info, timer_to_tid[tid]); | |
1671 | ||
1672 | struct ieee80211_local *local = temp_sta->local; | |
1673 | struct ieee80211_hw *hw = &local->hw; | |
1674 | struct sta_info *sta; | |
1675 | u8 *state; | |
1676 | ||
d0709a65 JB |
1677 | rcu_read_lock(); |
1678 | ||
eadc8d9e | 1679 | sta = sta_info_get(local, temp_sta->addr); |
d0709a65 JB |
1680 | if (!sta) { |
1681 | rcu_read_unlock(); | |
eadc8d9e | 1682 | return; |
d0709a65 | 1683 | } |
eadc8d9e | 1684 | |
cee24a3e | 1685 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1686 | /* check if the TID waits for addBA response */ |
07346f81 | 1687 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1688 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1689 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 1690 | *state = HT_AGG_STATE_IDLE; |
f4ea83dd | 1691 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
1692 | printk(KERN_DEBUG "timer expired on tid %d but we are not " |
1693 | "expecting addBA response there", tid); | |
f4ea83dd | 1694 | #endif |
eadc8d9e RR |
1695 | goto timer_expired_exit; |
1696 | } | |
1697 | ||
f4ea83dd | 1698 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 1699 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); |
f4ea83dd | 1700 | #endif |
eadc8d9e RR |
1701 | |
1702 | /* go through the state check in stop_BA_session */ | |
1703 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1704 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1705 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, |
1706 | WLAN_BACK_INITIATOR); | |
1707 | ||
1708 | timer_expired_exit: | |
d0709a65 | 1709 | rcu_read_unlock(); |
eadc8d9e RR |
1710 | } |
1711 | ||
07db2183 | 1712 | /* |
7b9d44cd RR |
1713 | * After accepting the AddBA Request we activated a timer, |
1714 | * resetting it after each frame that arrives from the originator. | |
07db2183 RR |
1715 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. |
1716 | */ | |
712590de | 1717 | static void sta_rx_agg_session_timer_expired(unsigned long data) |
07db2183 RR |
1718 | { |
1719 | /* not an elegant detour, but there is no choice as the timer passes | |
70d251b2 | 1720 | * only one argument, and various sta_info are needed here, so init |
73651ee6 | 1721 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
07db2183 RR |
1722 | * array gives the sta through container_of */ |
1723 | u8 *ptid = (u8 *)data; | |
1724 | u8 *timer_to_id = ptid - *ptid; | |
1725 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1726 | timer_to_tid[0]); | |
1727 | ||
f4ea83dd | 1728 | #ifdef CONFIG_MAC80211_HT_DEBUG |
07db2183 | 1729 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); |
f4ea83dd | 1730 | #endif |
d0709a65 JB |
1731 | ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, |
1732 | (u16)*ptid, WLAN_BACK_TIMER, | |
07db2183 RR |
1733 | WLAN_REASON_QSTA_TIMEOUT); |
1734 | } | |
1735 | ||
85249e5f RR |
1736 | void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr) |
1737 | { | |
1738 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1739 | int i; | |
1740 | ||
1741 | for (i = 0; i < STA_TID_NUM; i++) { | |
1742 | ieee80211_stop_tx_ba_session(&local->hw, addr, i, | |
1743 | WLAN_BACK_INITIATOR); | |
1744 | ieee80211_sta_stop_rx_ba_session(dev, addr, i, | |
1745 | WLAN_BACK_RECIPIENT, | |
1746 | WLAN_REASON_QSTA_LEAVE_QBSS); | |
1747 | } | |
1748 | } | |
07db2183 | 1749 | |
b6623486 AK |
1750 | static void ieee80211_send_refuse_measurement_request(struct net_device *dev, |
1751 | struct ieee80211_msrment_ie *request_ie, | |
1752 | const u8 *da, const u8 *bssid, | |
1753 | u8 dialog_token) | |
1754 | { | |
1755 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1756 | struct sk_buff *skb; | |
1757 | struct ieee80211_mgmt *msr_report; | |
1758 | ||
1759 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | |
1760 | sizeof(struct ieee80211_msrment_ie)); | |
1761 | ||
1762 | if (!skb) { | |
1763 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
1764 | "measurement report frame\n", dev->name); | |
1765 | return; | |
1766 | } | |
1767 | ||
1768 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1769 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | |
1770 | memset(msr_report, 0, 24); | |
1771 | memcpy(msr_report->da, da, ETH_ALEN); | |
1772 | memcpy(msr_report->sa, dev->dev_addr, ETH_ALEN); | |
1773 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | |
1774 | msr_report->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1775 | IEEE80211_STYPE_ACTION); | |
1776 | ||
1777 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | |
1778 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
1779 | msr_report->u.action.u.measurement.action_code = | |
1780 | WLAN_ACTION_SPCT_MSR_RPRT; | |
1781 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | |
1782 | ||
1783 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | |
1784 | msr_report->u.action.u.measurement.length = | |
1785 | sizeof(struct ieee80211_msrment_ie); | |
1786 | ||
1787 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | |
1788 | sizeof(struct ieee80211_msrment_ie)); | |
1789 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | |
1790 | msr_report->u.action.u.measurement.msr_elem.mode |= | |
1791 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | |
1792 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | |
1793 | ||
1794 | ieee80211_sta_tx(dev, skb, 0); | |
1795 | } | |
1796 | ||
1797 | static void ieee80211_sta_process_measurement_req(struct net_device *dev, | |
1798 | struct ieee80211_mgmt *mgmt, | |
1799 | size_t len) | |
1800 | { | |
1801 | /* | |
1802 | * Ignoring measurement request is spec violation. | |
1803 | * Mandatory measurements must be reported optional | |
1804 | * measurements might be refused or reported incapable | |
1805 | * For now just refuse | |
1806 | * TODO: Answer basic measurement as unmeasured | |
1807 | */ | |
1808 | ieee80211_send_refuse_measurement_request(dev, | |
1809 | &mgmt->u.action.u.measurement.msr_elem, | |
1810 | mgmt->sa, mgmt->bssid, | |
1811 | mgmt->u.action.u.measurement.dialog_token); | |
1812 | } | |
1813 | ||
1814 | ||
f0706e82 JB |
1815 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1816 | struct ieee80211_if_sta *ifsta, | |
1817 | struct ieee80211_mgmt *mgmt, | |
1818 | size_t len) | |
1819 | { | |
1820 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1821 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1822 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1823 | |
1824 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
f4ea83dd | 1825 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
f0706e82 | 1826 | return; |
f0706e82 | 1827 | |
f4ea83dd | 1828 | if (len < 24 + 6) |
f0706e82 | 1829 | return; |
f0706e82 | 1830 | |
51fb61e7 | 1831 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1832 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1833 | return; |
f0706e82 | 1834 | |
51fb61e7 | 1835 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1836 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1837 | return; |
f0706e82 JB |
1838 | |
1839 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1840 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1841 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1842 | ||
51fb61e7 | 1843 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
1844 | /* |
1845 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
1846 | * networks and most implementations do not seem to use it. |
1847 | * However, try to reply to authentication attempts if someone | |
1848 | * has actually implemented this. | |
135a2110 | 1849 | */ |
f4ea83dd | 1850 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
f0706e82 | 1851 | return; |
f0706e82 JB |
1852 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); |
1853 | } | |
1854 | ||
1855 | if (auth_alg != ifsta->auth_alg || | |
f4ea83dd | 1856 | auth_transaction != ifsta->auth_transaction) |
f0706e82 | 1857 | return; |
f0706e82 JB |
1858 | |
1859 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1860 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1861 | u8 algs[3]; | |
1862 | const int num_algs = ARRAY_SIZE(algs); | |
1863 | int i, pos; | |
1864 | algs[0] = algs[1] = algs[2] = 0xff; | |
1865 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1866 | algs[0] = WLAN_AUTH_OPEN; | |
1867 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1868 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1869 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1870 | algs[2] = WLAN_AUTH_LEAP; | |
1871 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1872 | pos = 0; | |
1873 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1874 | pos = 1; | |
1875 | else | |
1876 | pos = 2; | |
1877 | for (i = 0; i < num_algs; i++) { | |
1878 | pos++; | |
1879 | if (pos >= num_algs) | |
1880 | pos = 0; | |
1881 | if (algs[pos] == ifsta->auth_alg || | |
1882 | algs[pos] == 0xff) | |
1883 | continue; | |
1884 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1885 | !ieee80211_sta_wep_configured(dev)) | |
1886 | continue; | |
1887 | ifsta->auth_alg = algs[pos]; | |
f0706e82 JB |
1888 | break; |
1889 | } | |
1890 | } | |
1891 | return; | |
1892 | } | |
1893 | ||
1894 | switch (ifsta->auth_alg) { | |
1895 | case WLAN_AUTH_OPEN: | |
1896 | case WLAN_AUTH_LEAP: | |
1897 | ieee80211_auth_completed(dev, ifsta); | |
1898 | break; | |
1899 | case WLAN_AUTH_SHARED_KEY: | |
1900 | if (ifsta->auth_transaction == 4) | |
1901 | ieee80211_auth_completed(dev, ifsta); | |
1902 | else | |
1903 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1904 | break; | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | ||
1909 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1910 | struct ieee80211_if_sta *ifsta, | |
1911 | struct ieee80211_mgmt *mgmt, | |
1912 | size_t len) | |
1913 | { | |
1914 | u16 reason_code; | |
0795af57 | 1915 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1916 | |
f4ea83dd | 1917 | if (len < 24 + 2) |
f0706e82 | 1918 | return; |
f0706e82 | 1919 | |
f4ea83dd | 1920 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1921 | return; |
f0706e82 JB |
1922 | |
1923 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1924 | ||
988c0f72 | 1925 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f0706e82 | 1926 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
f0706e82 JB |
1927 | |
1928 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1929 | ifsta->state == IEEE80211_ASSOCIATE || | |
1930 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1931 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1932 | mod_timer(&ifsta->timer, jiffies + | |
1933 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1934 | } | |
1935 | ||
1936 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1937 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1938 | } |
1939 | ||
1940 | ||
1941 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1942 | struct ieee80211_if_sta *ifsta, | |
1943 | struct ieee80211_mgmt *mgmt, | |
1944 | size_t len) | |
1945 | { | |
1946 | u16 reason_code; | |
0795af57 | 1947 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1948 | |
f4ea83dd | 1949 | if (len < 24 + 2) |
f0706e82 | 1950 | return; |
f0706e82 | 1951 | |
f4ea83dd | 1952 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1953 | return; |
f0706e82 JB |
1954 | |
1955 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1956 | ||
d6f2da5b | 1957 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
1958 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
1959 | ||
1960 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
1961 | ifsta->state = IEEE80211_ASSOCIATE; | |
1962 | mod_timer(&ifsta->timer, jiffies + | |
1963 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1964 | } | |
1965 | ||
1966 | ieee80211_set_disassoc(dev, ifsta, 0); | |
1967 | } | |
1968 | ||
1969 | ||
471b3efd | 1970 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1971 | struct ieee80211_if_sta *ifsta, |
1972 | struct ieee80211_mgmt *mgmt, | |
1973 | size_t len, | |
1974 | int reassoc) | |
1975 | { | |
471b3efd JB |
1976 | struct ieee80211_local *local = sdata->local; |
1977 | struct net_device *dev = sdata->dev; | |
8318d78a | 1978 | struct ieee80211_supported_band *sband; |
f0706e82 | 1979 | struct sta_info *sta; |
8318d78a | 1980 | u64 rates, basic_rates; |
f0706e82 JB |
1981 | u16 capab_info, status_code, aid; |
1982 | struct ieee802_11_elems elems; | |
471b3efd | 1983 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1984 | u8 *pos; |
1985 | int i, j; | |
0795af57 | 1986 | DECLARE_MAC_BUF(mac); |
8318d78a | 1987 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1988 | |
1989 | /* AssocResp and ReassocResp have identical structure, so process both | |
1990 | * of them in this function. */ | |
1991 | ||
f4ea83dd | 1992 | if (ifsta->state != IEEE80211_ASSOCIATE) |
f0706e82 | 1993 | return; |
f0706e82 | 1994 | |
f4ea83dd | 1995 | if (len < 24 + 6) |
f0706e82 | 1996 | return; |
f0706e82 | 1997 | |
f4ea83dd | 1998 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1999 | return; |
f0706e82 JB |
2000 | |
2001 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2002 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2003 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 2004 | |
0795af57 | 2005 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 2006 | "status=%d aid=%d)\n", |
0795af57 | 2007 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 2008 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
2009 | |
2010 | if (status_code != WLAN_STATUS_SUCCESS) { | |
2011 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
2012 | dev->name, status_code); | |
8a69aa93 DD |
2013 | /* if this was a reassociation, ensure we try a "full" |
2014 | * association next time. This works around some broken APs | |
2015 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 2016 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
2017 | return; |
2018 | } | |
2019 | ||
1dd84aa2 JB |
2020 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
2021 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
2022 | "set\n", dev->name, aid); | |
2023 | aid &= ~(BIT(15) | BIT(14)); | |
2024 | ||
f0706e82 | 2025 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 2026 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
2027 | |
2028 | if (!elems.supp_rates) { | |
2029 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
2030 | dev->name); | |
2031 | return; | |
2032 | } | |
2033 | ||
2034 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
2035 | ifsta->aid = aid; | |
2036 | ifsta->ap_capab = capab_info; | |
2037 | ||
2038 | kfree(ifsta->assocresp_ies); | |
2039 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 2040 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
2041 | if (ifsta->assocresp_ies) |
2042 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
2043 | ||
d0709a65 JB |
2044 | rcu_read_lock(); |
2045 | ||
f0706e82 JB |
2046 | /* Add STA entry for the AP */ |
2047 | sta = sta_info_get(local, ifsta->bssid); | |
2048 | if (!sta) { | |
2049 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 2050 | int err; |
d0709a65 | 2051 | |
73651ee6 JB |
2052 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
2053 | if (!sta) { | |
2054 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
2055 | " the AP\n", dev->name); | |
d0709a65 | 2056 | rcu_read_unlock(); |
f0706e82 JB |
2057 | return; |
2058 | } | |
65c107ab | 2059 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 2060 | local->hw.conf.channel->center_freq, |
cffdd30d | 2061 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 | 2062 | if (bss) { |
f0706e82 | 2063 | sta->last_signal = bss->signal; |
566bfe5a | 2064 | sta->last_qual = bss->qual; |
f0706e82 | 2065 | sta->last_noise = bss->noise; |
3e122be0 | 2066 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 2067 | } |
73651ee6 JB |
2068 | |
2069 | err = sta_info_insert(sta); | |
2070 | if (err) { | |
2071 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
2072 | " the AP (error %d)\n", dev->name, err); | |
73651ee6 JB |
2073 | rcu_read_unlock(); |
2074 | return; | |
2075 | } | |
a61dae1f RR |
2076 | /* update new sta with its last rx activity */ |
2077 | sta->last_rx = jiffies; | |
f0706e82 JB |
2078 | } |
2079 | ||
73651ee6 JB |
2080 | /* |
2081 | * FIXME: Do we really need to update the sta_info's information here? | |
2082 | * We already know about the AP (we found it in our list) so it | |
2083 | * should already be filled with the right info, no? | |
2084 | * As is stands, all this is racy because typically we assume | |
2085 | * the information that is filled in here (except flags) doesn't | |
2086 | * change while a STA structure is alive. As such, it should move | |
2087 | * to between the sta_info_alloc() and sta_info_insert() above. | |
2088 | */ | |
2089 | ||
07346f81 JB |
2090 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
2091 | WLAN_STA_AUTHORIZED); | |
f0706e82 JB |
2092 | |
2093 | rates = 0; | |
8318d78a JB |
2094 | basic_rates = 0; |
2095 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2096 | ||
f0706e82 JB |
2097 | for (i = 0; i < elems.supp_rates_len; i++) { |
2098 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2099 | |
2100 | if (rate > 110) | |
2101 | have_higher_than_11mbit = true; | |
2102 | ||
2103 | for (j = 0; j < sband->n_bitrates; j++) { | |
2104 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2105 | rates |= BIT(j); |
8318d78a JB |
2106 | if (elems.supp_rates[i] & 0x80) |
2107 | basic_rates |= BIT(j); | |
2108 | } | |
f0706e82 | 2109 | } |
8318d78a | 2110 | |
f0706e82 JB |
2111 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
2112 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2113 | |
2114 | if (rate > 110) | |
2115 | have_higher_than_11mbit = true; | |
2116 | ||
2117 | for (j = 0; j < sband->n_bitrates; j++) { | |
2118 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2119 | rates |= BIT(j); |
8318d78a JB |
2120 | if (elems.ext_supp_rates[i] & 0x80) |
2121 | basic_rates |= BIT(j); | |
2122 | } | |
f0706e82 | 2123 | } |
8318d78a JB |
2124 | |
2125 | sta->supp_rates[local->hw.conf.channel->band] = rates; | |
2126 | sdata->basic_rates = basic_rates; | |
2127 | ||
2128 | /* cf. IEEE 802.11 9.2.12 */ | |
2129 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
2130 | have_higher_than_11mbit) | |
2131 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
2132 | else | |
2133 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 2134 | |
3434fbd3 JB |
2135 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
2136 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
d3c990fb | 2137 | struct ieee80211_ht_bss_info bss_info; |
d3c990fb RR |
2138 | ieee80211_ht_cap_ie_to_ht_info( |
2139 | (struct ieee80211_ht_cap *) | |
2140 | elems.ht_cap_elem, &sta->ht_info); | |
2141 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2142 | (struct ieee80211_ht_addt_info *) | |
2143 | elems.ht_info_elem, &bss_info); | |
38668c05 | 2144 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); |
d3c990fb RR |
2145 | } |
2146 | ||
f0706e82 JB |
2147 | rate_control_rate_init(sta, local); |
2148 | ||
3434fbd3 | 2149 | if (elems.wmm_param) { |
07346f81 | 2150 | set_sta_flags(sta, WLAN_STA_WME); |
e5f98f2d | 2151 | rcu_read_unlock(); |
f0706e82 JB |
2152 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2153 | elems.wmm_param_len); | |
e5f98f2d JB |
2154 | } else |
2155 | rcu_read_unlock(); | |
f0706e82 | 2156 | |
21c0cbe7 TW |
2157 | /* set AID and assoc capability, |
2158 | * ieee80211_set_associated() will tell the driver */ | |
8318d78a | 2159 | bss_conf->aid = aid; |
21c0cbe7 | 2160 | bss_conf->assoc_capability = capab_info; |
8318d78a | 2161 | ieee80211_set_associated(dev, ifsta, 1); |
f0706e82 | 2162 | |
f0706e82 JB |
2163 | ieee80211_associated(dev, ifsta); |
2164 | } | |
2165 | ||
2166 | ||
2167 | /* Caller must hold local->sta_bss_lock */ | |
2168 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
2169 | struct ieee80211_sta_bss *bss) | |
2170 | { | |
2171 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f709fc69 | 2172 | u8 hash_idx; |
902acc78 JB |
2173 | |
2174 | if (bss_mesh_cfg(bss)) | |
2175 | hash_idx = mesh_id_hash(bss_mesh_id(bss), | |
2176 | bss_mesh_id_len(bss)); | |
f709fc69 | 2177 | else |
f709fc69 | 2178 | hash_idx = STA_HASH(bss->bssid); |
902acc78 | 2179 | |
f709fc69 LCC |
2180 | bss->hnext = local->sta_bss_hash[hash_idx]; |
2181 | local->sta_bss_hash[hash_idx] = bss; | |
f0706e82 JB |
2182 | } |
2183 | ||
2184 | ||
2185 | /* Caller must hold local->sta_bss_lock */ | |
3e122be0 | 2186 | static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local, |
f0706e82 JB |
2187 | struct ieee80211_sta_bss *bss) |
2188 | { | |
f0706e82 JB |
2189 | struct ieee80211_sta_bss *b, *prev = NULL; |
2190 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
2191 | while (b) { | |
2192 | if (b == bss) { | |
2193 | if (!prev) | |
2194 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
2195 | bss->hnext; | |
2196 | else | |
2197 | prev->hnext = bss->hnext; | |
2198 | break; | |
2199 | } | |
2200 | prev = b; | |
2201 | b = b->hnext; | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | ||
2206 | static struct ieee80211_sta_bss * | |
8318d78a | 2207 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2208 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2209 | { |
2210 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2211 | struct ieee80211_sta_bss *bss; | |
2212 | ||
dd00cc48 | 2213 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
2214 | if (!bss) |
2215 | return NULL; | |
f0706e82 JB |
2216 | atomic_inc(&bss->users); |
2217 | atomic_inc(&bss->users); | |
2218 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
8318d78a | 2219 | bss->freq = freq; |
cffdd30d JL |
2220 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
2221 | memcpy(bss->ssid, ssid, ssid_len); | |
2222 | bss->ssid_len = ssid_len; | |
2223 | } | |
f0706e82 JB |
2224 | |
2225 | spin_lock_bh(&local->sta_bss_lock); | |
2226 | /* TODO: order by RSSI? */ | |
2227 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2228 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2229 | spin_unlock_bh(&local->sta_bss_lock); | |
2230 | return bss; | |
2231 | } | |
2232 | ||
f0706e82 | 2233 | static struct ieee80211_sta_bss * |
8318d78a | 2234 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2235 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2236 | { |
2237 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2238 | struct ieee80211_sta_bss *bss; | |
2239 | ||
2240 | spin_lock_bh(&local->sta_bss_lock); | |
2241 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
2242 | while (bss) { | |
902acc78 JB |
2243 | if (!bss_mesh_cfg(bss) && |
2244 | !memcmp(bss->bssid, bssid, ETH_ALEN) && | |
8318d78a | 2245 | bss->freq == freq && |
cffdd30d JL |
2246 | bss->ssid_len == ssid_len && |
2247 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
2248 | atomic_inc(&bss->users); |
2249 | break; | |
2250 | } | |
2251 | bss = bss->hnext; | |
2252 | } | |
2253 | spin_unlock_bh(&local->sta_bss_lock); | |
2254 | return bss; | |
2255 | } | |
2256 | ||
f709fc69 LCC |
2257 | #ifdef CONFIG_MAC80211_MESH |
2258 | static struct ieee80211_sta_bss * | |
2259 | ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
2260 | u8 *mesh_cfg, int freq) | |
2261 | { | |
2262 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2263 | struct ieee80211_sta_bss *bss; | |
2264 | ||
2265 | spin_lock_bh(&local->sta_bss_lock); | |
2266 | bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; | |
2267 | while (bss) { | |
902acc78 JB |
2268 | if (bss_mesh_cfg(bss) && |
2269 | !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && | |
f709fc69 LCC |
2270 | bss->freq == freq && |
2271 | mesh_id_len == bss->mesh_id_len && | |
2272 | (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, | |
2273 | mesh_id_len))) { | |
2274 | atomic_inc(&bss->users); | |
2275 | break; | |
2276 | } | |
2277 | bss = bss->hnext; | |
2278 | } | |
2279 | spin_unlock_bh(&local->sta_bss_lock); | |
2280 | return bss; | |
2281 | } | |
2282 | ||
2283 | static struct ieee80211_sta_bss * | |
2284 | ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
05e5e883 | 2285 | u8 *mesh_cfg, int mesh_config_len, int freq) |
f709fc69 LCC |
2286 | { |
2287 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2288 | struct ieee80211_sta_bss *bss; | |
2289 | ||
05e5e883 LCC |
2290 | if (mesh_config_len != MESH_CFG_LEN) |
2291 | return NULL; | |
2292 | ||
f709fc69 LCC |
2293 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
2294 | if (!bss) | |
2295 | return NULL; | |
2296 | ||
24736701 | 2297 | bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); |
f709fc69 LCC |
2298 | if (!bss->mesh_cfg) { |
2299 | kfree(bss); | |
2300 | return NULL; | |
2301 | } | |
2302 | ||
2303 | if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { | |
2304 | bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); | |
2305 | if (!bss->mesh_id) { | |
2306 | kfree(bss->mesh_cfg); | |
2307 | kfree(bss); | |
2308 | return NULL; | |
2309 | } | |
2310 | memcpy(bss->mesh_id, mesh_id, mesh_id_len); | |
2311 | } | |
2312 | ||
2313 | atomic_inc(&bss->users); | |
2314 | atomic_inc(&bss->users); | |
24736701 | 2315 | memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); |
f709fc69 LCC |
2316 | bss->mesh_id_len = mesh_id_len; |
2317 | bss->freq = freq; | |
2318 | spin_lock_bh(&local->sta_bss_lock); | |
2319 | /* TODO: order by RSSI? */ | |
2320 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2321 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2322 | spin_unlock_bh(&local->sta_bss_lock); | |
2323 | return bss; | |
2324 | } | |
2325 | #endif | |
f0706e82 JB |
2326 | |
2327 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
2328 | { | |
2329 | kfree(bss->wpa_ie); | |
2330 | kfree(bss->rsn_ie); | |
2331 | kfree(bss->wmm_ie); | |
c7153508 | 2332 | kfree(bss->ht_ie); |
9306102e | 2333 | kfree(bss->ht_add_ie); |
902acc78 JB |
2334 | kfree(bss_mesh_id(bss)); |
2335 | kfree(bss_mesh_cfg(bss)); | |
f0706e82 JB |
2336 | kfree(bss); |
2337 | } | |
2338 | ||
2339 | ||
3e122be0 | 2340 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
f0706e82 JB |
2341 | struct ieee80211_sta_bss *bss) |
2342 | { | |
1ebebea8 PE |
2343 | local_bh_disable(); |
2344 | if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) { | |
2345 | local_bh_enable(); | |
f0706e82 | 2346 | return; |
1ebebea8 | 2347 | } |
f0706e82 | 2348 | |
3e122be0 | 2349 | __ieee80211_rx_bss_hash_del(local, bss); |
f0706e82 JB |
2350 | list_del(&bss->list); |
2351 | spin_unlock_bh(&local->sta_bss_lock); | |
2352 | ieee80211_rx_bss_free(bss); | |
2353 | } | |
2354 | ||
2355 | ||
3e122be0 | 2356 | void ieee80211_rx_bss_list_init(struct ieee80211_local *local) |
f0706e82 | 2357 | { |
f0706e82 JB |
2358 | spin_lock_init(&local->sta_bss_lock); |
2359 | INIT_LIST_HEAD(&local->sta_bss_list); | |
2360 | } | |
2361 | ||
2362 | ||
3e122be0 | 2363 | void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local) |
f0706e82 | 2364 | { |
f0706e82 JB |
2365 | struct ieee80211_sta_bss *bss, *tmp; |
2366 | ||
2367 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
3e122be0 | 2368 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
2369 | } |
2370 | ||
2371 | ||
a607268a BR |
2372 | static int ieee80211_sta_join_ibss(struct net_device *dev, |
2373 | struct ieee80211_if_sta *ifsta, | |
2374 | struct ieee80211_sta_bss *bss) | |
2375 | { | |
2376 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2377 | int res, rates, i, j; | |
2378 | struct sk_buff *skb; | |
2379 | struct ieee80211_mgmt *mgmt; | |
a607268a BR |
2380 | u8 *pos; |
2381 | struct ieee80211_sub_if_data *sdata; | |
2382 | struct ieee80211_supported_band *sband; | |
507b06d0 | 2383 | union iwreq_data wrqu; |
a607268a BR |
2384 | |
2385 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2386 | ||
9dd6aed0 JB |
2387 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
2388 | ||
a607268a | 2389 | /* Remove possible STA entries from other IBSS networks. */ |
dc6676b7 | 2390 | sta_info_flush_delayed(sdata); |
a607268a BR |
2391 | |
2392 | if (local->ops->reset_tsf) { | |
2393 | /* Reset own TSF to allow time synchronization work. */ | |
2394 | local->ops->reset_tsf(local_to_hw(local)); | |
2395 | } | |
2396 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
9d139c81 | 2397 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
a607268a BR |
2398 | if (res) |
2399 | return res; | |
2400 | ||
2401 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2402 | ||
a607268a BR |
2403 | sdata->drop_unencrypted = bss->capability & |
2404 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2405 | ||
be038b37 | 2406 | res = ieee80211_set_freq(dev, bss->freq); |
a607268a | 2407 | |
be038b37 AK |
2408 | if (res) |
2409 | return res; | |
a607268a | 2410 | |
9d139c81 | 2411 | /* Build IBSS probe response */ |
a607268a | 2412 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
9d139c81 | 2413 | if (skb) { |
a607268a BR |
2414 | skb_reserve(skb, local->hw.extra_tx_headroom); |
2415 | ||
2416 | mgmt = (struct ieee80211_mgmt *) | |
2417 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2418 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2419 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
9d139c81 | 2420 | IEEE80211_STYPE_PROBE_RESP); |
a607268a BR |
2421 | memset(mgmt->da, 0xff, ETH_ALEN); |
2422 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2423 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2424 | mgmt->u.beacon.beacon_int = | |
2425 | cpu_to_le16(local->hw.conf.beacon_int); | |
4faeb860 | 2426 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
a607268a BR |
2427 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
2428 | ||
2429 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2430 | *pos++ = WLAN_EID_SSID; | |
2431 | *pos++ = ifsta->ssid_len; | |
2432 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2433 | ||
2434 | rates = bss->supp_rates_len; | |
2435 | if (rates > 8) | |
2436 | rates = 8; | |
2437 | pos = skb_put(skb, 2 + rates); | |
2438 | *pos++ = WLAN_EID_SUPP_RATES; | |
2439 | *pos++ = rates; | |
2440 | memcpy(pos, bss->supp_rates, rates); | |
2441 | ||
2442 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
2443 | pos = skb_put(skb, 2 + 1); | |
2444 | *pos++ = WLAN_EID_DS_PARAMS; | |
2445 | *pos++ = 1; | |
2446 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
2447 | } | |
2448 | ||
2449 | pos = skb_put(skb, 2 + 2); | |
2450 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2451 | *pos++ = 2; | |
2452 | /* FIX: set ATIM window based on scan results */ | |
2453 | *pos++ = 0; | |
2454 | *pos++ = 0; | |
2455 | ||
2456 | if (bss->supp_rates_len > 8) { | |
2457 | rates = bss->supp_rates_len - 8; | |
2458 | pos = skb_put(skb, 2 + rates); | |
2459 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2460 | *pos++ = rates; | |
2461 | memcpy(pos, &bss->supp_rates[8], rates); | |
2462 | } | |
2463 | ||
9d139c81 | 2464 | ifsta->probe_resp = skb; |
e039fa4a | 2465 | |
9d139c81 JB |
2466 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
2467 | } | |
a607268a | 2468 | |
9d139c81 JB |
2469 | rates = 0; |
2470 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2471 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2472 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
2473 | for (j = 0; j < sband->n_bitrates; j++) | |
2474 | if (sband->bitrates[j].bitrate == bitrate) | |
2475 | rates |= BIT(j); | |
a607268a | 2476 | } |
9d139c81 JB |
2477 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
2478 | ||
2479 | ieee80211_sta_def_wmm_params(dev, bss, 1); | |
a607268a BR |
2480 | |
2481 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2482 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2483 | ||
507b06d0 DW |
2484 | memset(&wrqu, 0, sizeof(wrqu)); |
2485 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
2486 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
a607268a BR |
2487 | |
2488 | return res; | |
2489 | } | |
2490 | ||
f709fc69 LCC |
2491 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
2492 | struct ieee802_11_elems *elems, | |
2493 | enum ieee80211_band band) | |
2494 | { | |
2495 | struct ieee80211_supported_band *sband; | |
2496 | struct ieee80211_rate *bitrates; | |
2497 | size_t num_rates; | |
2498 | u64 supp_rates; | |
2499 | int i, j; | |
2500 | sband = local->hw.wiphy->bands[band]; | |
2501 | ||
2502 | if (!sband) { | |
2503 | WARN_ON(1); | |
2504 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2505 | } | |
2506 | ||
2507 | bitrates = sband->bitrates; | |
2508 | num_rates = sband->n_bitrates; | |
2509 | supp_rates = 0; | |
2510 | for (i = 0; i < elems->supp_rates_len + | |
2511 | elems->ext_supp_rates_len; i++) { | |
2512 | u8 rate = 0; | |
2513 | int own_rate; | |
2514 | if (i < elems->supp_rates_len) | |
2515 | rate = elems->supp_rates[i]; | |
2516 | else if (elems->ext_supp_rates) | |
2517 | rate = elems->ext_supp_rates | |
2518 | [i - elems->supp_rates_len]; | |
2519 | own_rate = 5 * (rate & 0x7f); | |
2520 | for (j = 0; j < num_rates; j++) | |
2521 | if (bitrates[j].bitrate == own_rate) | |
2522 | supp_rates |= BIT(j); | |
2523 | } | |
2524 | return supp_rates; | |
2525 | } | |
2526 | ||
a607268a | 2527 | |
f0706e82 JB |
2528 | static void ieee80211_rx_bss_info(struct net_device *dev, |
2529 | struct ieee80211_mgmt *mgmt, | |
2530 | size_t len, | |
2531 | struct ieee80211_rx_status *rx_status, | |
ae6a44e3 | 2532 | struct ieee802_11_elems *elems, |
f0706e82 JB |
2533 | int beacon) |
2534 | { | |
2535 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 2536 | int freq, clen; |
f0706e82 JB |
2537 | struct ieee80211_sta_bss *bss; |
2538 | struct sta_info *sta; | |
2539 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
9d9bf77d | 2540 | u64 beacon_timestamp, rx_timestamp; |
fab7d4a2 | 2541 | struct ieee80211_channel *channel; |
0795af57 JP |
2542 | DECLARE_MAC_BUF(mac); |
2543 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2544 | |
2545 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
2546 | return; /* ignore ProbeResp to foreign address */ | |
2547 | ||
9d9bf77d | 2548 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
f0706e82 | 2549 | |
ae6a44e3 EK |
2550 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && |
2551 | elems->mesh_config && mesh_matches_local(elems, dev)) { | |
2552 | u64 rates = ieee80211_sta_get_rates(local, elems, | |
902acc78 JB |
2553 | rx_status->band); |
2554 | ||
2555 | mesh_neighbour_update(mgmt->sa, rates, dev, | |
ae6a44e3 | 2556 | mesh_peer_accepts_plinks(elems, dev)); |
902acc78 | 2557 | } |
f709fc69 | 2558 | |
d0709a65 JB |
2559 | rcu_read_lock(); |
2560 | ||
ae6a44e3 | 2561 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && |
f0706e82 JB |
2562 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
2563 | (sta = sta_info_get(local, mgmt->sa))) { | |
f709fc69 | 2564 | u64 prev_rates; |
ae6a44e3 | 2565 | u64 supp_rates = ieee80211_sta_get_rates(local, elems, |
f709fc69 | 2566 | rx_status->band); |
f0706e82 | 2567 | |
8318d78a JB |
2568 | prev_rates = sta->supp_rates[rx_status->band]; |
2569 | sta->supp_rates[rx_status->band] &= supp_rates; | |
2570 | if (sta->supp_rates[rx_status->band] == 0) { | |
f0706e82 JB |
2571 | /* No matching rates - this should not really happen. |
2572 | * Make sure that at least one rate is marked | |
2573 | * supported to avoid issues with TX rate ctrl. */ | |
8318d78a JB |
2574 | sta->supp_rates[rx_status->band] = |
2575 | sdata->u.sta.supp_rates_bits[rx_status->band]; | |
f0706e82 | 2576 | } |
f0706e82 JB |
2577 | } |
2578 | ||
d0709a65 JB |
2579 | rcu_read_unlock(); |
2580 | ||
ae6a44e3 EK |
2581 | if (elems->ds_params && elems->ds_params_len == 1) |
2582 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
f0706e82 | 2583 | else |
8318d78a | 2584 | freq = rx_status->freq; |
f0706e82 | 2585 | |
fab7d4a2 JB |
2586 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
2587 | ||
2588 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2589 | return; | |
2590 | ||
f709fc69 | 2591 | #ifdef CONFIG_MAC80211_MESH |
ae6a44e3 EK |
2592 | if (elems->mesh_config) |
2593 | bss = ieee80211_rx_mesh_bss_get(dev, elems->mesh_id, | |
2594 | elems->mesh_id_len, elems->mesh_config, freq); | |
f709fc69 LCC |
2595 | else |
2596 | #endif | |
2597 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, | |
ae6a44e3 | 2598 | elems->ssid, elems->ssid_len); |
f709fc69 LCC |
2599 | if (!bss) { |
2600 | #ifdef CONFIG_MAC80211_MESH | |
ae6a44e3 EK |
2601 | if (elems->mesh_config) |
2602 | bss = ieee80211_rx_mesh_bss_add(dev, elems->mesh_id, | |
2603 | elems->mesh_id_len, elems->mesh_config, | |
2604 | elems->mesh_config_len, freq); | |
f709fc69 LCC |
2605 | else |
2606 | #endif | |
2607 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, | |
ae6a44e3 | 2608 | elems->ssid, elems->ssid_len); |
f0706e82 JB |
2609 | if (!bss) |
2610 | return; | |
2611 | } else { | |
2612 | #if 0 | |
2613 | /* TODO: order by RSSI? */ | |
2614 | spin_lock_bh(&local->sta_bss_lock); | |
2615 | list_move_tail(&bss->list, &local->sta_bss_list); | |
2616 | spin_unlock_bh(&local->sta_bss_lock); | |
2617 | #endif | |
2618 | } | |
2619 | ||
5628221c | 2620 | /* save the ERP value so that it is available at association time */ |
ae6a44e3 EK |
2621 | if (elems->erp_info && elems->erp_info_len >= 1) { |
2622 | bss->erp_value = elems->erp_info[0]; | |
5628221c DD |
2623 | bss->has_erp_value = 1; |
2624 | } | |
2625 | ||
ae6a44e3 EK |
2626 | if (elems->ht_cap_elem && |
2627 | (!bss->ht_ie || bss->ht_ie_len != elems->ht_cap_elem_len || | |
2628 | memcmp(bss->ht_ie, elems->ht_cap_elem, elems->ht_cap_elem_len))) { | |
30b89b0f | 2629 | kfree(bss->ht_ie); |
ae6a44e3 | 2630 | bss->ht_ie = kmalloc(elems->ht_cap_elem_len + 2, GFP_ATOMIC); |
30b89b0f | 2631 | if (bss->ht_ie) { |
ae6a44e3 EK |
2632 | memcpy(bss->ht_ie, elems->ht_cap_elem - 2, |
2633 | elems->ht_cap_elem_len + 2); | |
2634 | bss->ht_ie_len = elems->ht_cap_elem_len + 2; | |
30b89b0f JB |
2635 | } else |
2636 | bss->ht_ie_len = 0; | |
ae6a44e3 | 2637 | } else if (!elems->ht_cap_elem && bss->ht_ie) { |
30b89b0f JB |
2638 | kfree(bss->ht_ie); |
2639 | bss->ht_ie = NULL; | |
2640 | bss->ht_ie_len = 0; | |
2641 | } | |
2642 | ||
ae6a44e3 | 2643 | if (elems->ht_info_elem && |
9306102e | 2644 | (!bss->ht_add_ie || |
ae6a44e3 EK |
2645 | bss->ht_add_ie_len != elems->ht_info_elem_len || |
2646 | memcmp(bss->ht_add_ie, elems->ht_info_elem, | |
2647 | elems->ht_info_elem_len))) { | |
9306102e EG |
2648 | kfree(bss->ht_add_ie); |
2649 | bss->ht_add_ie = | |
ae6a44e3 | 2650 | kmalloc(elems->ht_info_elem_len + 2, GFP_ATOMIC); |
9306102e | 2651 | if (bss->ht_add_ie) { |
ae6a44e3 EK |
2652 | memcpy(bss->ht_add_ie, elems->ht_info_elem - 2, |
2653 | elems->ht_info_elem_len + 2); | |
2654 | bss->ht_add_ie_len = elems->ht_info_elem_len + 2; | |
9306102e EG |
2655 | } else |
2656 | bss->ht_add_ie_len = 0; | |
ae6a44e3 | 2657 | } else if (!elems->ht_info_elem && bss->ht_add_ie) { |
9306102e EG |
2658 | kfree(bss->ht_add_ie); |
2659 | bss->ht_add_ie = NULL; | |
2660 | bss->ht_add_ie_len = 0; | |
2661 | } | |
2662 | ||
f0706e82 JB |
2663 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
2664 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 | 2665 | |
98f7dfd8 EG |
2666 | if (elems->tim) { |
2667 | struct ieee80211_tim_ie *tim_ie = | |
2668 | (struct ieee80211_tim_ie *)elems->tim; | |
2669 | bss->dtim_period = tim_ie->dtim_period; | |
2670 | } | |
2671 | ||
2672 | /* set default value for buggy APs */ | |
2673 | if (!elems->tim || bss->dtim_period == 0) | |
2674 | bss->dtim_period = 1; | |
2675 | ||
f0706e82 | 2676 | bss->supp_rates_len = 0; |
ae6a44e3 | 2677 | if (elems->supp_rates) { |
f0706e82 | 2678 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
ae6a44e3 EK |
2679 | if (clen > elems->supp_rates_len) |
2680 | clen = elems->supp_rates_len; | |
2681 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates, | |
f0706e82 JB |
2682 | clen); |
2683 | bss->supp_rates_len += clen; | |
2684 | } | |
ae6a44e3 | 2685 | if (elems->ext_supp_rates) { |
f0706e82 | 2686 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
ae6a44e3 EK |
2687 | if (clen > elems->ext_supp_rates_len) |
2688 | clen = elems->ext_supp_rates_len; | |
f0706e82 | 2689 | memcpy(&bss->supp_rates[bss->supp_rates_len], |
ae6a44e3 | 2690 | elems->ext_supp_rates, clen); |
f0706e82 JB |
2691 | bss->supp_rates_len += clen; |
2692 | } | |
2693 | ||
30b89b0f JB |
2694 | bss->band = rx_status->band; |
2695 | ||
2696 | bss->timestamp = beacon_timestamp; | |
2697 | bss->last_update = jiffies; | |
30b89b0f JB |
2698 | bss->signal = rx_status->signal; |
2699 | bss->noise = rx_status->noise; | |
566bfe5a | 2700 | bss->qual = rx_status->qual; |
30b89b0f JB |
2701 | if (!beacon && !bss->probe_resp) |
2702 | bss->probe_resp = true; | |
2703 | ||
2704 | /* | |
2705 | * In STA mode, the remaining parameters should not be overridden | |
2706 | * by beacons because they're not necessarily accurate there. | |
2707 | */ | |
2708 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2709 | bss->probe_resp && beacon) { | |
3e122be0 | 2710 | ieee80211_rx_bss_put(local, bss); |
30b89b0f JB |
2711 | return; |
2712 | } | |
2713 | ||
ae6a44e3 EK |
2714 | if (elems->wpa && |
2715 | (!bss->wpa_ie || bss->wpa_ie_len != elems->wpa_len || | |
2716 | memcmp(bss->wpa_ie, elems->wpa, elems->wpa_len))) { | |
f0706e82 | 2717 | kfree(bss->wpa_ie); |
ae6a44e3 | 2718 | bss->wpa_ie = kmalloc(elems->wpa_len + 2, GFP_ATOMIC); |
f0706e82 | 2719 | if (bss->wpa_ie) { |
ae6a44e3 EK |
2720 | memcpy(bss->wpa_ie, elems->wpa - 2, elems->wpa_len + 2); |
2721 | bss->wpa_ie_len = elems->wpa_len + 2; | |
f0706e82 JB |
2722 | } else |
2723 | bss->wpa_ie_len = 0; | |
ae6a44e3 | 2724 | } else if (!elems->wpa && bss->wpa_ie) { |
f0706e82 JB |
2725 | kfree(bss->wpa_ie); |
2726 | bss->wpa_ie = NULL; | |
2727 | bss->wpa_ie_len = 0; | |
2728 | } | |
2729 | ||
ae6a44e3 EK |
2730 | if (elems->rsn && |
2731 | (!bss->rsn_ie || bss->rsn_ie_len != elems->rsn_len || | |
2732 | memcmp(bss->rsn_ie, elems->rsn, elems->rsn_len))) { | |
f0706e82 | 2733 | kfree(bss->rsn_ie); |
ae6a44e3 | 2734 | bss->rsn_ie = kmalloc(elems->rsn_len + 2, GFP_ATOMIC); |
f0706e82 | 2735 | if (bss->rsn_ie) { |
ae6a44e3 EK |
2736 | memcpy(bss->rsn_ie, elems->rsn - 2, elems->rsn_len + 2); |
2737 | bss->rsn_ie_len = elems->rsn_len + 2; | |
f0706e82 JB |
2738 | } else |
2739 | bss->rsn_ie_len = 0; | |
ae6a44e3 | 2740 | } else if (!elems->rsn && bss->rsn_ie) { |
f0706e82 JB |
2741 | kfree(bss->rsn_ie); |
2742 | bss->rsn_ie = NULL; | |
2743 | bss->rsn_ie_len = 0; | |
2744 | } | |
2745 | ||
30b89b0f JB |
2746 | /* |
2747 | * Cf. | |
2748 | * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC | |
2749 | * | |
2750 | * quoting: | |
2751 | * | |
2752 | * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia | |
2753 | * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi | |
2754 | * Alliance (September 1, 2004) is incorporated by reference herein. | |
2755 | * The inclusion of the WMM Parameters in probe responses and | |
2756 | * association responses is mandatory for WMM enabled networks. The | |
2757 | * inclusion of the WMM Parameters in beacons, however, is optional. | |
2758 | */ | |
2759 | ||
ae6a44e3 EK |
2760 | if (elems->wmm_param && |
2761 | (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_param_len || | |
2762 | memcmp(bss->wmm_ie, elems->wmm_param, elems->wmm_param_len))) { | |
f0706e82 | 2763 | kfree(bss->wmm_ie); |
ae6a44e3 | 2764 | bss->wmm_ie = kmalloc(elems->wmm_param_len + 2, GFP_ATOMIC); |
f0706e82 | 2765 | if (bss->wmm_ie) { |
ae6a44e3 EK |
2766 | memcpy(bss->wmm_ie, elems->wmm_param - 2, |
2767 | elems->wmm_param_len + 2); | |
2768 | bss->wmm_ie_len = elems->wmm_param_len + 2; | |
f0706e82 JB |
2769 | } else |
2770 | bss->wmm_ie_len = 0; | |
ae6a44e3 EK |
2771 | } else if (elems->wmm_info && |
2772 | (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_info_len || | |
2773 | memcmp(bss->wmm_ie, elems->wmm_info, | |
2774 | elems->wmm_info_len))) { | |
a46f025d AK |
2775 | /* As for certain AP's Fifth bit is not set in WMM IE in |
2776 | * beacon frames.So while parsing the beacon frame the | |
2777 | * wmm_info structure is used instead of wmm_param. | |
2778 | * wmm_info structure was never used to set bss->wmm_ie. | |
2779 | * This code fixes this problem by copying the WME | |
2780 | * information from wmm_info to bss->wmm_ie and enabling | |
2781 | * n-band association. | |
2782 | */ | |
2783 | kfree(bss->wmm_ie); | |
ae6a44e3 | 2784 | bss->wmm_ie = kmalloc(elems->wmm_info_len + 2, GFP_ATOMIC); |
a46f025d | 2785 | if (bss->wmm_ie) { |
ae6a44e3 EK |
2786 | memcpy(bss->wmm_ie, elems->wmm_info - 2, |
2787 | elems->wmm_info_len + 2); | |
2788 | bss->wmm_ie_len = elems->wmm_info_len + 2; | |
a46f025d AK |
2789 | } else |
2790 | bss->wmm_ie_len = 0; | |
ae6a44e3 | 2791 | } else if (!elems->wmm_param && !elems->wmm_info && bss->wmm_ie) { |
f0706e82 JB |
2792 | kfree(bss->wmm_ie); |
2793 | bss->wmm_ie = NULL; | |
2794 | bss->wmm_ie_len = 0; | |
2795 | } | |
9d9bf77d BR |
2796 | |
2797 | /* check if we need to merge IBSS */ | |
2798 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
2799 | !local->sta_sw_scanning && !local->sta_hw_scanning && | |
fba4a1e6 | 2800 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d | 2801 | bss->freq == local->oper_channel->center_freq && |
ae6a44e3 EK |
2802 | elems->ssid_len == sdata->u.sta.ssid_len && |
2803 | memcmp(elems->ssid, sdata->u.sta.ssid, | |
2804 | sdata->u.sta.ssid_len) == 0) { | |
9d9bf77d BR |
2805 | if (rx_status->flag & RX_FLAG_TSFT) { |
2806 | /* in order for correct IBSS merging we need mactime | |
2807 | * | |
2808 | * since mactime is defined as the time the first data | |
2809 | * symbol of the frame hits the PHY, and the timestamp | |
2810 | * of the beacon is defined as "the time that the data | |
2811 | * symbol containing the first bit of the timestamp is | |
2812 | * transmitted to the PHY plus the transmitting STA’s | |
2813 | * delays through its local PHY from the MAC-PHY | |
2814 | * interface to its interface with the WM" | |
2815 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2816 | * the receiver - we have to take into account the | |
2817 | * offset between the two. | |
2818 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2819 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2820 | */ | |
2821 | int rate = local->hw.wiphy->bands[rx_status->band]-> | |
2822 | bitrates[rx_status->rate_idx].bitrate; | |
2823 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2824 | } else if (local && local->ops && local->ops->get_tsf) | |
2825 | /* second best option: get current TSF */ | |
2826 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2827 | else | |
2828 | /* can't merge without knowing the TSF */ | |
2829 | rx_timestamp = -1LLU; | |
2830 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2831 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2832 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2833 | print_mac(mac, mgmt->sa), | |
2834 | print_mac(mac2, mgmt->bssid), | |
2835 | (unsigned long long)rx_timestamp, | |
2836 | (unsigned long long)beacon_timestamp, | |
2837 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2838 | jiffies); | |
2839 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2840 | if (beacon_timestamp > rx_timestamp) { | |
fba4a1e6 | 2841 | #ifndef CONFIG_MAC80211_IBSS_DEBUG |
f4ea83dd JB |
2842 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2843 | "local TSF - IBSS merge with BSSID %s\n", | |
2844 | dev->name, print_mac(mac, mgmt->bssid)); | |
fba4a1e6 | 2845 | #endif |
9d9bf77d BR |
2846 | ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); |
2847 | ieee80211_ibss_add_sta(dev, NULL, | |
87291c02 VK |
2848 | mgmt->bssid, mgmt->sa, |
2849 | BIT(rx_status->rate_idx)); | |
9d9bf77d BR |
2850 | } |
2851 | } | |
2852 | ||
3e122be0 | 2853 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
2854 | } |
2855 | ||
2856 | ||
2857 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2858 | struct ieee80211_mgmt *mgmt, | |
2859 | size_t len, | |
2860 | struct ieee80211_rx_status *rx_status) | |
2861 | { | |
ae6a44e3 EK |
2862 | size_t baselen; |
2863 | struct ieee802_11_elems elems; | |
2864 | ||
2865 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; | |
2866 | if (baselen > len) | |
2867 | return; | |
2868 | ||
2869 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
2870 | &elems); | |
2871 | ||
2872 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, &elems, 0); | |
f0706e82 JB |
2873 | } |
2874 | ||
2875 | ||
2876 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2877 | struct ieee80211_mgmt *mgmt, | |
2878 | size_t len, | |
2879 | struct ieee80211_rx_status *rx_status) | |
2880 | { | |
f0706e82 JB |
2881 | struct ieee80211_sub_if_data *sdata; |
2882 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
2883 | size_t baselen; |
2884 | struct ieee802_11_elems elems; | |
d3c990fb RR |
2885 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
2886 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 2887 | u32 changed = 0; |
f0706e82 | 2888 | |
ae6a44e3 EK |
2889 | /* Process beacon from the current BSS */ |
2890 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2891 | if (baselen > len) | |
2892 | return; | |
2893 | ||
2894 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
2895 | ||
2896 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, &elems, 1); | |
f0706e82 JB |
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 | ||
3434fbd3 JB |
2907 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2908 | elems.wmm_param_len); | |
d18ef29f RC |
2909 | |
2910 | /* Do not send changes to driver if we are scanning. This removes | |
2911 | * requirement that driver's bss_info_changed function needs to be | |
2912 | * atomic. */ | |
2913 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
2914 | return; | |
2915 | ||
5628221c | 2916 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2917 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
2918 | else { |
2919 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
2920 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
2921 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
2922 | } | |
f0706e82 | 2923 | |
d3c990fb | 2924 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 2925 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
2926 | struct ieee80211_ht_bss_info bss_info; |
2927 | ||
2928 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2929 | (struct ieee80211_ht_addt_info *) | |
2930 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
2931 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
2932 | &bss_info); | |
d3c990fb RR |
2933 | } |
2934 | ||
471b3efd | 2935 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2936 | } |
2937 | ||
2938 | ||
2939 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
2940 | struct ieee80211_if_sta *ifsta, | |
2941 | struct ieee80211_mgmt *mgmt, | |
2942 | size_t len, | |
2943 | struct ieee80211_rx_status *rx_status) | |
2944 | { | |
2945 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2946 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2947 | int tx_last_beacon; | |
2948 | struct sk_buff *skb; | |
2949 | struct ieee80211_mgmt *resp; | |
2950 | u8 *pos, *end; | |
0795af57 JP |
2951 | DECLARE_MAC_BUF(mac); |
2952 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2953 | DECLARE_MAC_BUF(mac2); | |
2954 | DECLARE_MAC_BUF(mac3); | |
2955 | #endif | |
f0706e82 | 2956 | |
51fb61e7 | 2957 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
2958 | ifsta->state != IEEE80211_IBSS_JOINED || |
2959 | len < 24 + 2 || !ifsta->probe_resp) | |
2960 | return; | |
2961 | ||
2962 | if (local->ops->tx_last_beacon) | |
2963 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2964 | else | |
2965 | tx_last_beacon = 1; | |
2966 | ||
2967 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2968 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2969 | "%s (tx_last_beacon=%d)\n", | |
2970 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
2971 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
2972 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2973 | ||
2974 | if (!tx_last_beacon) | |
2975 | return; | |
2976 | ||
2977 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
2978 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
2979 | return; | |
2980 | ||
2981 | end = ((u8 *) mgmt) + len; | |
2982 | pos = mgmt->u.probe_req.variable; | |
2983 | if (pos[0] != WLAN_EID_SSID || | |
2984 | pos + 2 + pos[1] > end) { | |
f4ea83dd JB |
2985 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2986 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
2987 | "from %s\n", | |
2988 | dev->name, print_mac(mac, mgmt->sa)); | |
2989 | #endif | |
f0706e82 JB |
2990 | return; |
2991 | } | |
2992 | if (pos[1] != 0 && | |
2993 | (pos[1] != ifsta->ssid_len || | |
2994 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
2995 | /* Ignore ProbeReq for foreign SSID */ | |
2996 | return; | |
2997 | } | |
2998 | ||
2999 | /* Reply with ProbeResp */ | |
0ec0b7ac | 3000 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
3001 | if (!skb) |
3002 | return; | |
3003 | ||
3004 | resp = (struct ieee80211_mgmt *) skb->data; | |
3005 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
3006 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3007 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
3008 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
3009 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3010 | ieee80211_sta_tx(dev, skb, 0); | |
3011 | } | |
3012 | ||
4e20cb29 JB |
3013 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
3014 | struct ieee80211_if_sta *ifsta, | |
3015 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
3016 | size_t len, |
3017 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 3018 | { |
f709fc69 | 3019 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b6623486 | 3020 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f709fc69 | 3021 | |
9f985b0e RR |
3022 | if (len < IEEE80211_MIN_ACTION_SIZE) |
3023 | return; | |
3024 | ||
3025 | switch (mgmt->u.action.category) { | |
b6623486 AK |
3026 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
3027 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) | |
3028 | break; | |
3029 | switch (mgmt->u.action.u.chan_switch.action_code) { | |
3030 | case WLAN_ACTION_SPCT_MSR_REQ: | |
3031 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3032 | sizeof(mgmt->u.action.u.measurement))) | |
3033 | break; | |
3034 | ieee80211_sta_process_measurement_req(dev, mgmt, len); | |
3035 | break; | |
3036 | } | |
3037 | break; | |
9f985b0e RR |
3038 | case WLAN_CATEGORY_BACK: |
3039 | switch (mgmt->u.action.u.addba_req.action_code) { | |
3040 | case WLAN_ACTION_ADDBA_REQ: | |
3041 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3042 | sizeof(mgmt->u.action.u.addba_req))) | |
3043 | break; | |
3044 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
3045 | break; | |
eadc8d9e RR |
3046 | case WLAN_ACTION_ADDBA_RESP: |
3047 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3048 | sizeof(mgmt->u.action.u.addba_resp))) | |
3049 | break; | |
3050 | ieee80211_sta_process_addba_resp(dev, mgmt, len); | |
3051 | break; | |
688b88a4 RR |
3052 | case WLAN_ACTION_DELBA: |
3053 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3054 | sizeof(mgmt->u.action.u.delba))) | |
3055 | break; | |
3056 | ieee80211_sta_process_delba(dev, mgmt, len); | |
3057 | break; | |
9f985b0e RR |
3058 | } |
3059 | break; | |
f709fc69 | 3060 | case PLINK_CATEGORY: |
902acc78 | 3061 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3062 | mesh_rx_plink_frame(dev, mgmt, len, rx_status); |
3063 | break; | |
f709fc69 | 3064 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 3065 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3066 | mesh_rx_path_sel_frame(dev, mgmt, len); |
3067 | break; | |
9f985b0e RR |
3068 | } |
3069 | } | |
f0706e82 JB |
3070 | |
3071 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
3072 | struct ieee80211_rx_status *rx_status) | |
3073 | { | |
3074 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3075 | struct ieee80211_sub_if_data *sdata; | |
3076 | struct ieee80211_if_sta *ifsta; | |
3077 | struct ieee80211_mgmt *mgmt; | |
3078 | u16 fc; | |
3079 | ||
3080 | if (skb->len < 24) | |
3081 | goto fail; | |
3082 | ||
3083 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3084 | ifsta = &sdata->u.sta; | |
3085 | ||
3086 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3087 | fc = le16_to_cpu(mgmt->frame_control); | |
3088 | ||
3089 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3090 | case IEEE80211_STYPE_PROBE_REQ: | |
3091 | case IEEE80211_STYPE_PROBE_RESP: | |
3092 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 3093 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
3094 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
3095 | case IEEE80211_STYPE_AUTH: | |
3096 | case IEEE80211_STYPE_ASSOC_RESP: | |
3097 | case IEEE80211_STYPE_REASSOC_RESP: | |
3098 | case IEEE80211_STYPE_DEAUTH: | |
3099 | case IEEE80211_STYPE_DISASSOC: | |
3100 | skb_queue_tail(&ifsta->skb_queue, skb); | |
3101 | queue_work(local->hw.workqueue, &ifsta->work); | |
3102 | return; | |
f0706e82 JB |
3103 | } |
3104 | ||
3105 | fail: | |
3106 | kfree_skb(skb); | |
3107 | } | |
3108 | ||
3109 | ||
3110 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
3111 | struct sk_buff *skb) | |
3112 | { | |
3113 | struct ieee80211_rx_status *rx_status; | |
3114 | struct ieee80211_sub_if_data *sdata; | |
3115 | struct ieee80211_if_sta *ifsta; | |
3116 | struct ieee80211_mgmt *mgmt; | |
3117 | u16 fc; | |
3118 | ||
3119 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3120 | ifsta = &sdata->u.sta; | |
3121 | ||
3122 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
3123 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3124 | fc = le16_to_cpu(mgmt->frame_control); | |
3125 | ||
3126 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3127 | case IEEE80211_STYPE_PROBE_REQ: | |
3128 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
3129 | rx_status); | |
3130 | break; | |
3131 | case IEEE80211_STYPE_PROBE_RESP: | |
3132 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3133 | break; | |
3134 | case IEEE80211_STYPE_BEACON: | |
3135 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3136 | break; | |
3137 | case IEEE80211_STYPE_AUTH: | |
3138 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
3139 | break; | |
3140 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 3141 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
3142 | break; |
3143 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 3144 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
3145 | break; |
3146 | case IEEE80211_STYPE_DEAUTH: | |
3147 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
3148 | break; | |
3149 | case IEEE80211_STYPE_DISASSOC: | |
3150 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
3151 | break; | |
9f985b0e | 3152 | case IEEE80211_STYPE_ACTION: |
f709fc69 | 3153 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 3154 | break; |
f0706e82 JB |
3155 | } |
3156 | ||
3157 | kfree_skb(skb); | |
3158 | } | |
3159 | ||
3160 | ||
9ae54c84 | 3161 | ieee80211_rx_result |
ece8eddd ZY |
3162 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, |
3163 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
3164 | { |
3165 | struct ieee80211_mgmt *mgmt; | |
4e3996fe | 3166 | __le16 fc; |
f0706e82 | 3167 | |
ece8eddd | 3168 | if (skb->len < 2) |
e4c26add | 3169 | return RX_DROP_UNUSABLE; |
f0706e82 JB |
3170 | |
3171 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
4e3996fe | 3172 | fc = mgmt->frame_control; |
f0706e82 | 3173 | |
4e3996fe | 3174 | if (ieee80211_is_ctl(fc)) |
9ae54c84 | 3175 | return RX_CONTINUE; |
ece8eddd ZY |
3176 | |
3177 | if (skb->len < 24) | |
e4c26add | 3178 | return RX_DROP_MONITOR; |
ece8eddd | 3179 | |
4e3996fe HH |
3180 | if (ieee80211_is_probe_resp(fc)) { |
3181 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3182 | dev_kfree_skb(skb); | |
3183 | return RX_QUEUED; | |
f0706e82 | 3184 | } |
4e3996fe HH |
3185 | |
3186 | if (ieee80211_is_beacon(fc)) { | |
3187 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3188 | dev_kfree_skb(skb); | |
3189 | return RX_QUEUED; | |
3190 | } | |
3191 | ||
9ae54c84 | 3192 | return RX_CONTINUE; |
f0706e82 JB |
3193 | } |
3194 | ||
3195 | ||
3196 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
3197 | { | |
3198 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3199 | int active = 0; | |
3200 | struct sta_info *sta; | |
d0709a65 | 3201 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3202 | |
d0709a65 JB |
3203 | rcu_read_lock(); |
3204 | ||
3205 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
3206 | if (sta->sdata == sdata && | |
f0706e82 JB |
3207 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
3208 | jiffies)) { | |
3209 | active++; | |
3210 | break; | |
3211 | } | |
3212 | } | |
d0709a65 JB |
3213 | |
3214 | rcu_read_unlock(); | |
f0706e82 JB |
3215 | |
3216 | return active; | |
3217 | } | |
3218 | ||
3219 | ||
f709fc69 | 3220 | static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time) |
f0706e82 JB |
3221 | { |
3222 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3223 | struct sta_info *sta, *tmp; | |
be8755e1 | 3224 | LIST_HEAD(tmp_list); |
0795af57 | 3225 | DECLARE_MAC_BUF(mac); |
d0709a65 | 3226 | unsigned long flags; |
f0706e82 | 3227 | |
d0709a65 | 3228 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 3229 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 3230 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
f4ea83dd | 3231 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
0795af57 JP |
3232 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
3233 | dev->name, print_mac(mac, sta->addr)); | |
f4ea83dd | 3234 | #endif |
cb585bcc | 3235 | __sta_info_unlink(&sta); |
d0709a65 JB |
3236 | if (sta) |
3237 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 3238 | } |
d0709a65 | 3239 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 3240 | |
d0709a65 JB |
3241 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
3242 | sta_info_destroy(sta); | |
f0706e82 JB |
3243 | } |
3244 | ||
3245 | ||
3246 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
3247 | struct ieee80211_if_sta *ifsta) | |
3248 | { | |
3249 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
3250 | ||
f709fc69 | 3251 | ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT); |
f0706e82 JB |
3252 | if (ieee80211_sta_active_ibss(dev)) |
3253 | return; | |
3254 | ||
3255 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
3256 | "IBSS networks with same SSID (merge)\n", dev->name); | |
3257 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
3258 | } | |
3259 | ||
3260 | ||
f709fc69 LCC |
3261 | #ifdef CONFIG_MAC80211_MESH |
3262 | static void ieee80211_mesh_housekeeping(struct net_device *dev, | |
3263 | struct ieee80211_if_sta *ifsta) | |
3264 | { | |
3265 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3266 | bool free_plinks; | |
3267 | ||
3268 | ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); | |
3269 | mesh_path_expire(dev); | |
3270 | ||
3271 | free_plinks = mesh_plink_availables(sdata); | |
3272 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
9d139c81 | 3273 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
3274 | |
3275 | mod_timer(&ifsta->timer, jiffies + | |
3276 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
3277 | } | |
3278 | ||
3279 | ||
3280 | void ieee80211_start_mesh(struct net_device *dev) | |
3281 | { | |
3282 | struct ieee80211_if_sta *ifsta; | |
3283 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3284 | ifsta = &sdata->u.sta; | |
3285 | ifsta->state = IEEE80211_MESH_UP; | |
3286 | ieee80211_sta_timer((unsigned long)sdata); | |
56a6d13d | 3287 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
3288 | } |
3289 | #endif | |
3290 | ||
3291 | ||
f0706e82 JB |
3292 | void ieee80211_sta_timer(unsigned long data) |
3293 | { | |
3294 | struct ieee80211_sub_if_data *sdata = | |
3295 | (struct ieee80211_sub_if_data *) data; | |
3296 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3297 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
3298 | ||
3299 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3300 | queue_work(local->hw.workqueue, &ifsta->work); | |
3301 | } | |
3302 | ||
f0706e82 JB |
3303 | void ieee80211_sta_work(struct work_struct *work) |
3304 | { | |
3305 | struct ieee80211_sub_if_data *sdata = | |
3306 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
3307 | struct net_device *dev = sdata->dev; | |
3308 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3309 | struct ieee80211_if_sta *ifsta; | |
3310 | struct sk_buff *skb; | |
3311 | ||
3312 | if (!netif_running(dev)) | |
3313 | return; | |
3314 | ||
ece8eddd | 3315 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
3316 | return; |
3317 | ||
f4ea83dd JB |
3318 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && |
3319 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
3320 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) | |
f0706e82 | 3321 | return; |
f0706e82 JB |
3322 | ifsta = &sdata->u.sta; |
3323 | ||
3324 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
3325 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
3326 | ||
f709fc69 | 3327 | #ifdef CONFIG_MAC80211_MESH |
902acc78 JB |
3328 | if (ifsta->preq_queue_len && |
3329 | time_after(jiffies, | |
3330 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
f709fc69 LCC |
3331 | mesh_path_start_discovery(dev); |
3332 | #endif | |
3333 | ||
f0706e82 JB |
3334 | if (ifsta->state != IEEE80211_AUTHENTICATE && |
3335 | ifsta->state != IEEE80211_ASSOCIATE && | |
3336 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
3337 | if (ifsta->scan_ssid_len) |
3338 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
3339 | else | |
3340 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
3341 | return; |
3342 | } | |
3343 | ||
3344 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
3345 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
3346 | return; | |
3347 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3348 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
3349 | return; | |
3350 | ||
3351 | switch (ifsta->state) { | |
3352 | case IEEE80211_DISABLED: | |
3353 | break; | |
3354 | case IEEE80211_AUTHENTICATE: | |
3355 | ieee80211_authenticate(dev, ifsta); | |
3356 | break; | |
3357 | case IEEE80211_ASSOCIATE: | |
3358 | ieee80211_associate(dev, ifsta); | |
3359 | break; | |
3360 | case IEEE80211_ASSOCIATED: | |
3361 | ieee80211_associated(dev, ifsta); | |
3362 | break; | |
3363 | case IEEE80211_IBSS_SEARCH: | |
3364 | ieee80211_sta_find_ibss(dev, ifsta); | |
3365 | break; | |
3366 | case IEEE80211_IBSS_JOINED: | |
3367 | ieee80211_sta_merge_ibss(dev, ifsta); | |
3368 | break; | |
f709fc69 LCC |
3369 | #ifdef CONFIG_MAC80211_MESH |
3370 | case IEEE80211_MESH_UP: | |
3371 | ieee80211_mesh_housekeeping(dev, ifsta); | |
3372 | break; | |
3373 | #endif | |
f0706e82 | 3374 | default: |
f4ea83dd | 3375 | WARN_ON(1); |
f0706e82 JB |
3376 | break; |
3377 | } | |
3378 | ||
3379 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
3380 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
3381 | "mixed-cell disabled - disassociate\n", dev->name); | |
3382 | ||
3383 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
3384 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3385 | } | |
3386 | } | |
3387 | ||
3388 | ||
3389 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
3390 | struct ieee80211_if_sta *ifsta) | |
3391 | { | |
3392 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3393 | ||
3394 | if (local->ops->reset_tsf) { | |
3395 | /* Reset own TSF to allow time synchronization work. */ | |
3396 | local->ops->reset_tsf(local_to_hw(local)); | |
3397 | } | |
3398 | ||
3399 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
3400 | ||
3401 | ||
3402 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
3403 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3404 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
3405 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
3406 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
3407 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
3408 | else | |
3409 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
f0706e82 | 3410 | ifsta->auth_transaction = -1; |
d6f2da5b JS |
3411 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
3412 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
3413 | netif_carrier_off(dev); |
3414 | } | |
3415 | ||
3416 | ||
3417 | void ieee80211_sta_req_auth(struct net_device *dev, | |
3418 | struct ieee80211_if_sta *ifsta) | |
3419 | { | |
3420 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3421 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3422 | ||
51fb61e7 | 3423 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3424 | return; |
3425 | ||
d6f2da5b JS |
3426 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3427 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
3428 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
3429 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
3430 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
3431 | queue_work(local->hw.workqueue, &ifsta->work); | |
3432 | } | |
3433 | } | |
3434 | ||
3435 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
3436 | const char *ssid, int ssid_len) | |
3437 | { | |
3438 | int tmp, hidden_ssid; | |
3439 | ||
48225709 MW |
3440 | if (ssid_len == ifsta->ssid_len && |
3441 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
3442 | return 1; |
3443 | ||
d6f2da5b | 3444 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
3445 | return 0; |
3446 | ||
3447 | hidden_ssid = 1; | |
3448 | tmp = ssid_len; | |
3449 | while (tmp--) { | |
3450 | if (ssid[tmp] != '\0') { | |
3451 | hidden_ssid = 0; | |
3452 | break; | |
3453 | } | |
3454 | } | |
3455 | ||
3456 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
3457 | return 1; | |
3458 | ||
3459 | if (ssid_len == 1 && ssid[0] == ' ') | |
3460 | return 1; | |
3461 | ||
3462 | return 0; | |
3463 | } | |
3464 | ||
3465 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
3466 | struct ieee80211_if_sta *ifsta) | |
3467 | { | |
3468 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3469 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3470 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
3471 | int top_rssi = 0, freq; | |
3472 | ||
f0706e82 | 3473 | spin_lock_bh(&local->sta_bss_lock); |
8318d78a | 3474 | freq = local->oper_channel->center_freq; |
f0706e82 JB |
3475 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
3476 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
3477 | continue; | |
3478 | ||
34a961f7 AK |
3479 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
3480 | IEEE80211_STA_AUTO_BSSID_SEL | | |
3481 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
3482 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
3483 | !!sdata->default_key)) | |
f0706e82 JB |
3484 | continue; |
3485 | ||
d6f2da5b JS |
3486 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
3487 | bss->freq != freq) | |
f0706e82 JB |
3488 | continue; |
3489 | ||
d6f2da5b | 3490 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
3491 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
3492 | continue; | |
3493 | ||
d6f2da5b | 3494 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
3495 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
3496 | continue; | |
3497 | ||
566bfe5a | 3498 | if (!selected || top_rssi < bss->signal) { |
f0706e82 | 3499 | selected = bss; |
566bfe5a | 3500 | top_rssi = bss->signal; |
f0706e82 JB |
3501 | } |
3502 | } | |
3503 | if (selected) | |
3504 | atomic_inc(&selected->users); | |
3505 | spin_unlock_bh(&local->sta_bss_lock); | |
3506 | ||
3507 | if (selected) { | |
be038b37 | 3508 | ieee80211_set_freq(dev, selected->freq); |
d6f2da5b | 3509 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
3510 | ieee80211_sta_set_ssid(dev, selected->ssid, |
3511 | selected->ssid_len); | |
3512 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
e2839d8f | 3513 | ieee80211_sta_def_wmm_params(dev, selected, 0); |
3e122be0 | 3514 | ieee80211_rx_bss_put(local, selected); |
f0706e82 | 3515 | ifsta->state = IEEE80211_AUTHENTICATE; |
f0706e82 JB |
3516 | ieee80211_sta_reset_auth(dev, ifsta); |
3517 | return 0; | |
3518 | } else { | |
3519 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 3520 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
3521 | ieee80211_sta_start_scan(dev, NULL, 0); |
3522 | else | |
3523 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
3524 | ifsta->ssid_len); | |
f0706e82 JB |
3525 | ifsta->state = IEEE80211_AUTHENTICATE; |
3526 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
3527 | } else | |
3528 | ifsta->state = IEEE80211_DISABLED; | |
3529 | } | |
f0706e82 JB |
3530 | return -1; |
3531 | } | |
3532 | ||
f0706e82 JB |
3533 | |
3534 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
3535 | struct ieee80211_if_sta *ifsta) | |
3536 | { | |
3537 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3538 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 3539 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
8318d78a | 3540 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3541 | u8 bssid[ETH_ALEN], *pos; |
3542 | int i; | |
167ad6f7 | 3543 | int ret; |
0795af57 | 3544 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3545 | |
3546 | #if 0 | |
3547 | /* Easier testing, use fixed BSSID. */ | |
3548 | memset(bssid, 0xfe, ETH_ALEN); | |
3549 | #else | |
3550 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
3551 | * own MAC address to make sure that devices that do not have proper | |
3552 | * random number generator get different BSSID. */ | |
3553 | get_random_bytes(bssid, ETH_ALEN); | |
3554 | for (i = 0; i < ETH_ALEN; i++) | |
3555 | bssid[i] ^= dev->dev_addr[i]; | |
3556 | bssid[0] &= ~0x01; | |
3557 | bssid[0] |= 0x02; | |
3558 | #endif | |
3559 | ||
0795af57 JP |
3560 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
3561 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 3562 | |
8318d78a JB |
3563 | bss = ieee80211_rx_bss_add(dev, bssid, |
3564 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3565 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
3566 | if (!bss) |
3567 | return -ENOMEM; | |
3568 | ||
8318d78a JB |
3569 | bss->band = local->hw.conf.channel->band; |
3570 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
3571 | |
3572 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 3573 | local->hw.conf.beacon_int = 100; |
f0706e82 | 3574 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
3575 | bss->last_update = jiffies; |
3576 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
3577 | |
3578 | if (sdata->default_key) | |
f0706e82 | 3579 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 3580 | else |
f0706e82 | 3581 | sdata->drop_unencrypted = 0; |
988c0f72 | 3582 | |
8318d78a | 3583 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 3584 | pos = bss->supp_rates; |
8318d78a JB |
3585 | for (i = 0; i < sband->n_bitrates; i++) { |
3586 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
3587 | *pos++ = (u8) (rate / 5); |
3588 | } | |
3589 | ||
167ad6f7 | 3590 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3e122be0 | 3591 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 3592 | return ret; |
f0706e82 JB |
3593 | } |
3594 | ||
3595 | ||
3596 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
3597 | struct ieee80211_if_sta *ifsta) | |
3598 | { | |
3599 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3600 | struct ieee80211_sta_bss *bss; | |
3601 | int found = 0; | |
3602 | u8 bssid[ETH_ALEN]; | |
3603 | int active_ibss; | |
0795af57 JP |
3604 | DECLARE_MAC_BUF(mac); |
3605 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
3606 | |
3607 | if (ifsta->ssid_len == 0) | |
3608 | return -EINVAL; | |
3609 | ||
3610 | active_ibss = ieee80211_sta_active_ibss(dev); | |
3611 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3612 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
3613 | dev->name, active_ibss); | |
3614 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3615 | spin_lock_bh(&local->sta_bss_lock); | |
3616 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3617 | if (ifsta->ssid_len != bss->ssid_len || | |
3618 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
3619 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
3620 | continue; | |
3621 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3622 | printk(KERN_DEBUG " bssid=%s found\n", |
3623 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
3624 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3625 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
3626 | found = 1; | |
3627 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
3628 | break; | |
3629 | } | |
3630 | spin_unlock_bh(&local->sta_bss_lock); | |
3631 | ||
3632 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
6e43829b VK |
3633 | if (found) |
3634 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " | |
3635 | "%s\n", print_mac(mac, bssid), | |
3636 | print_mac(mac2, ifsta->bssid)); | |
f0706e82 | 3637 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
80693ceb DD |
3638 | |
3639 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
167ad6f7 | 3640 | int ret; |
80693ceb DD |
3641 | int search_freq; |
3642 | ||
3643 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) | |
3644 | search_freq = bss->freq; | |
3645 | else | |
3646 | search_freq = local->hw.conf.channel->center_freq; | |
3647 | ||
3648 | bss = ieee80211_rx_bss_get(dev, bssid, search_freq, | |
3649 | ifsta->ssid, ifsta->ssid_len); | |
3650 | if (!bss) | |
3651 | goto dont_join; | |
3652 | ||
0795af57 | 3653 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 3654 | " based on configured SSID\n", |
0795af57 | 3655 | dev->name, print_mac(mac, bssid)); |
167ad6f7 | 3656 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3e122be0 | 3657 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 3658 | return ret; |
f0706e82 | 3659 | } |
80693ceb DD |
3660 | |
3661 | dont_join: | |
f0706e82 JB |
3662 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
3663 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
3664 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3665 | ||
3666 | /* Selected IBSS not found in current scan results - try to scan */ | |
3667 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
3668 | !ieee80211_sta_active_ibss(dev)) { | |
3669 | mod_timer(&ifsta->timer, jiffies + | |
3670 | IEEE80211_IBSS_MERGE_INTERVAL); | |
3671 | } else if (time_after(jiffies, local->last_scan_completed + | |
3672 | IEEE80211_SCAN_INTERVAL)) { | |
3673 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
3674 | "join\n", dev->name); | |
3675 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
3676 | ifsta->ssid_len); | |
3677 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
3678 | int interval = IEEE80211_SCAN_INTERVAL; | |
3679 | ||
3680 | if (time_after(jiffies, ifsta->ibss_join_req + | |
3681 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 3682 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
3683 | (!(local->oper_channel->flags & |
3684 | IEEE80211_CHAN_NO_IBSS))) | |
f0706e82 | 3685 | return ieee80211_sta_create_ibss(dev, ifsta); |
d6f2da5b | 3686 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a JB |
3687 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
3688 | " %d MHz\n", dev->name, | |
3689 | local->hw.conf.channel->center_freq); | |
f0706e82 JB |
3690 | } |
3691 | ||
3692 | /* No IBSS found - decrease scan interval and continue | |
3693 | * scanning. */ | |
3694 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3695 | } | |
3696 | ||
3697 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3698 | mod_timer(&ifsta->timer, jiffies + interval); | |
3699 | return 0; | |
3700 | } | |
3701 | ||
3702 | return 0; | |
3703 | } | |
3704 | ||
3705 | ||
3706 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3707 | { | |
8318d78a | 3708 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3709 | struct ieee80211_if_sta *ifsta; |
9d139c81 | 3710 | int res; |
f0706e82 JB |
3711 | |
3712 | if (len > IEEE80211_MAX_SSID_LEN) | |
3713 | return -EINVAL; | |
3714 | ||
f0706e82 JB |
3715 | ifsta = &sdata->u.sta; |
3716 | ||
9d139c81 JB |
3717 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
3718 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); | |
3719 | memcpy(ifsta->ssid, ssid, len); | |
3720 | ifsta->ssid_len = len; | |
d6f2da5b | 3721 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
9d139c81 JB |
3722 | |
3723 | res = 0; | |
3724 | /* | |
3725 | * Hack! MLME code needs to be cleaned up to have different | |
3726 | * entry points for configuration and internal selection change | |
3727 | */ | |
3728 | if (netif_running(sdata->dev)) | |
3729 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); | |
3730 | if (res) { | |
3731 | printk(KERN_DEBUG "%s: Failed to config new SSID to " | |
3732 | "the low-level driver\n", dev->name); | |
3733 | return res; | |
3734 | } | |
3735 | } | |
f0706e82 | 3736 | |
d6f2da5b JS |
3737 | if (len) |
3738 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3739 | else | |
3740 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
9d139c81 | 3741 | |
51fb61e7 | 3742 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3743 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3744 | ifsta->ibss_join_req = jiffies; |
3745 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3746 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3747 | } | |
9d139c81 | 3748 | |
f0706e82 JB |
3749 | return 0; |
3750 | } | |
3751 | ||
3752 | ||
3753 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3754 | { | |
3755 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3756 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3757 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3758 | *len = ifsta->ssid_len; | |
3759 | return 0; | |
3760 | } | |
3761 | ||
3762 | ||
3763 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3764 | { | |
3765 | struct ieee80211_sub_if_data *sdata; | |
3766 | struct ieee80211_if_sta *ifsta; | |
3767 | int res; | |
3768 | ||
3769 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3770 | ifsta = &sdata->u.sta; | |
3771 | ||
3772 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3773 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
9d139c81 JB |
3774 | res = 0; |
3775 | /* | |
3776 | * Hack! See also ieee80211_sta_set_ssid. | |
3777 | */ | |
3778 | if (netif_running(sdata->dev)) | |
3779 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); | |
f0706e82 JB |
3780 | if (res) { |
3781 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3782 | "the low-level driver\n", dev->name); | |
3783 | return res; | |
3784 | } | |
3785 | } | |
3786 | ||
d6f2da5b JS |
3787 | if (is_valid_ether_addr(bssid)) |
3788 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3789 | else |
d6f2da5b JS |
3790 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3791 | ||
f0706e82 JB |
3792 | return 0; |
3793 | } | |
3794 | ||
3795 | ||
3796 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3797 | struct ieee80211_sub_if_data *sdata, | |
3798 | int powersave) | |
3799 | { | |
3800 | struct sk_buff *skb; | |
3801 | struct ieee80211_hdr *nullfunc; | |
4e3996fe | 3802 | __le16 fc; |
f0706e82 JB |
3803 | |
3804 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3805 | if (!skb) { | |
3806 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3807 | "frame\n", sdata->dev->name); | |
3808 | return; | |
3809 | } | |
3810 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3811 | ||
3812 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3813 | memset(nullfunc, 0, 24); | |
4e3996fe HH |
3814 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | |
3815 | IEEE80211_FCTL_TODS); | |
f0706e82 | 3816 | if (powersave) |
4e3996fe HH |
3817 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); |
3818 | nullfunc->frame_control = fc; | |
f0706e82 JB |
3819 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); |
3820 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3821 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3822 | ||
3823 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3824 | } | |
3825 | ||
3826 | ||
69d3b6f4 JB |
3827 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3828 | { | |
3829 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
3830 | ieee80211_vif_is_mesh(&sdata->vif)) | |
3831 | ieee80211_sta_timer((unsigned long)sdata); | |
3832 | } | |
3833 | ||
f0706e82 JB |
3834 | void ieee80211_scan_completed(struct ieee80211_hw *hw) |
3835 | { | |
3836 | struct ieee80211_local *local = hw_to_local(hw); | |
3837 | struct net_device *dev = local->scan_dev; | |
3838 | struct ieee80211_sub_if_data *sdata; | |
3839 | union iwreq_data wrqu; | |
3840 | ||
3841 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3842 | memset(&wrqu, 0, sizeof(wrqu)); |
3843 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3844 | |
ece8eddd ZY |
3845 | if (local->sta_hw_scanning) { |
3846 | local->sta_hw_scanning = 0; | |
675ef586 MA |
3847 | if (ieee80211_hw_config(local)) |
3848 | printk(KERN_DEBUG "%s: failed to restore operational " | |
3849 | "channel after scan\n", dev->name); | |
69d3b6f4 JB |
3850 | /* Restart STA timer for HW scan case */ |
3851 | rcu_read_lock(); | |
3852 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3853 | ieee80211_restart_sta_timer(sdata); | |
3854 | rcu_read_unlock(); | |
3855 | ||
ece8eddd ZY |
3856 | goto done; |
3857 | } | |
3858 | ||
3859 | local->sta_sw_scanning = 0; | |
f0706e82 | 3860 | if (ieee80211_hw_config(local)) |
4b50e388 | 3861 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3862 | "channel after scan\n", dev->name); |
3863 | ||
4150c572 JB |
3864 | |
3865 | netif_tx_lock_bh(local->mdev); | |
e308a5d8 | 3866 | netif_addr_lock(local->mdev); |
4150c572 JB |
3867 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; |
3868 | local->ops->configure_filter(local_to_hw(local), | |
3869 | FIF_BCN_PRBRESP_PROMISC, | |
3870 | &local->filter_flags, | |
3871 | local->mdev->mc_count, | |
3872 | local->mdev->mc_list); | |
3873 | ||
e308a5d8 | 3874 | netif_addr_unlock(local->mdev); |
4150c572 | 3875 | netif_tx_unlock_bh(local->mdev); |
f0706e82 | 3876 | |
79010420 JB |
3877 | rcu_read_lock(); |
3878 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
69d3b6f4 JB |
3879 | /* Tell AP we're back */ |
3880 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && | |
3881 | sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) | |
3882 | ieee80211_send_nullfunc(local, sdata, 0); | |
14042cbe | 3883 | |
69d3b6f4 | 3884 | ieee80211_restart_sta_timer(sdata); |
f709fc69 | 3885 | |
f0706e82 JB |
3886 | netif_wake_queue(sdata->dev); |
3887 | } | |
79010420 | 3888 | rcu_read_unlock(); |
f0706e82 | 3889 | |
ece8eddd | 3890 | done: |
f0706e82 | 3891 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3892 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3893 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3894 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
4c43e0d0 | 3895 | (!(ifsta->state == IEEE80211_IBSS_JOINED) && |
f0706e82 JB |
3896 | !ieee80211_sta_active_ibss(dev))) |
3897 | ieee80211_sta_find_ibss(dev, ifsta); | |
3898 | } | |
3899 | } | |
3900 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
3901 | ||
3902 | void ieee80211_sta_scan_work(struct work_struct *work) | |
3903 | { | |
3904 | struct ieee80211_local *local = | |
3905 | container_of(work, struct ieee80211_local, scan_work.work); | |
3906 | struct net_device *dev = local->scan_dev; | |
3907 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
8318d78a | 3908 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3909 | struct ieee80211_channel *chan; |
3910 | int skip; | |
3911 | unsigned long next_delay = 0; | |
3912 | ||
ece8eddd | 3913 | if (!local->sta_sw_scanning) |
f0706e82 JB |
3914 | return; |
3915 | ||
3916 | switch (local->scan_state) { | |
3917 | case SCAN_SET_CHANNEL: | |
69d464d5 JB |
3918 | /* |
3919 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS | |
3920 | * after we successfully scanned the last channel of the last | |
3921 | * band (and the last band is supported by the hw) | |
3922 | */ | |
8318d78a JB |
3923 | if (local->scan_band < IEEE80211_NUM_BANDS) |
3924 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3925 | else | |
3926 | sband = NULL; | |
3927 | ||
69d464d5 JB |
3928 | /* |
3929 | * If we are at an unsupported band and have more bands | |
3930 | * left to scan, advance to the next supported one. | |
3931 | */ | |
3932 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { | |
8318d78a JB |
3933 | local->scan_band++; |
3934 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3935 | local->scan_channel_idx = 0; | |
3936 | } | |
3937 | ||
69d464d5 JB |
3938 | /* if no more bands/channels left, complete scan */ |
3939 | if (!sband || local->scan_channel_idx >= sband->n_channels) { | |
f0706e82 JB |
3940 | ieee80211_scan_completed(local_to_hw(local)); |
3941 | return; | |
3942 | } | |
8318d78a JB |
3943 | skip = 0; |
3944 | chan = &sband->channels[local->scan_channel_idx]; | |
3945 | ||
3946 | if (chan->flags & IEEE80211_CHAN_DISABLED || | |
51fb61e7 | 3947 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
8318d78a | 3948 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
f0706e82 JB |
3949 | skip = 1; |
3950 | ||
3951 | if (!skip) { | |
f0706e82 JB |
3952 | local->scan_channel = chan; |
3953 | if (ieee80211_hw_config(local)) { | |
8318d78a JB |
3954 | printk(KERN_DEBUG "%s: failed to set freq to " |
3955 | "%d MHz for scan\n", dev->name, | |
3956 | chan->center_freq); | |
f0706e82 JB |
3957 | skip = 1; |
3958 | } | |
3959 | } | |
3960 | ||
69d464d5 | 3961 | /* advance state machine to next channel/band */ |
f0706e82 | 3962 | local->scan_channel_idx++; |
8318d78a | 3963 | if (local->scan_channel_idx >= sband->n_channels) { |
69d464d5 JB |
3964 | /* |
3965 | * scan_band may end up == IEEE80211_NUM_BANDS, but | |
3966 | * we'll catch that case above and complete the scan | |
3967 | * if that is the case. | |
3968 | */ | |
8318d78a JB |
3969 | local->scan_band++; |
3970 | local->scan_channel_idx = 0; | |
f0706e82 JB |
3971 | } |
3972 | ||
3973 | if (skip) | |
3974 | break; | |
3975 | ||
3976 | next_delay = IEEE80211_PROBE_DELAY + | |
3977 | usecs_to_jiffies(local->hw.channel_change_time); | |
3978 | local->scan_state = SCAN_SEND_PROBE; | |
3979 | break; | |
3980 | case SCAN_SEND_PROBE: | |
8318d78a | 3981 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
f0706e82 | 3982 | local->scan_state = SCAN_SET_CHANNEL; |
8318d78a JB |
3983 | |
3984 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
3985 | break; | |
3986 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
3987 | local->scan_ssid_len); | |
3988 | next_delay = IEEE80211_CHANNEL_TIME; | |
f0706e82 JB |
3989 | break; |
3990 | } | |
3991 | ||
ece8eddd | 3992 | if (local->sta_sw_scanning) |
f0706e82 JB |
3993 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
3994 | next_delay); | |
3995 | } | |
3996 | ||
3997 | ||
3998 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
3999 | u8 *ssid, size_t ssid_len) | |
4000 | { | |
4001 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4002 | struct ieee80211_sub_if_data *sdata; | |
4003 | ||
4004 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
4005 | return -EINVAL; | |
4006 | ||
4007 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
4008 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
4009 | * BSSID: MACAddress | |
4010 | * SSID | |
4011 | * ScanType: ACTIVE, PASSIVE | |
4012 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
4013 | * a Probe frame during active scanning | |
4014 | * ChannelList | |
4015 | * MinChannelTime (>= ProbeDelay), in TU | |
4016 | * MaxChannelTime: (>= MinChannelTime), in TU | |
4017 | */ | |
4018 | ||
4019 | /* MLME-SCAN.confirm | |
4020 | * BSSDescriptionSet | |
4021 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
4022 | */ | |
4023 | ||
ece8eddd | 4024 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4025 | if (local->scan_dev == dev) |
4026 | return 0; | |
4027 | return -EBUSY; | |
4028 | } | |
4029 | ||
4030 | if (local->ops->hw_scan) { | |
4031 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 4032 | ssid, ssid_len); |
f0706e82 | 4033 | if (!rc) { |
ece8eddd | 4034 | local->sta_hw_scanning = 1; |
f0706e82 JB |
4035 | local->scan_dev = dev; |
4036 | } | |
4037 | return rc; | |
4038 | } | |
4039 | ||
ece8eddd | 4040 | local->sta_sw_scanning = 1; |
f0706e82 | 4041 | |
79010420 JB |
4042 | rcu_read_lock(); |
4043 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
f0706e82 | 4044 | netif_stop_queue(sdata->dev); |
51fb61e7 | 4045 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 4046 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4047 | ieee80211_send_nullfunc(local, sdata, 1); |
4048 | } | |
79010420 | 4049 | rcu_read_unlock(); |
f0706e82 JB |
4050 | |
4051 | if (ssid) { | |
4052 | local->scan_ssid_len = ssid_len; | |
4053 | memcpy(local->scan_ssid, ssid, ssid_len); | |
4054 | } else | |
4055 | local->scan_ssid_len = 0; | |
4056 | local->scan_state = SCAN_SET_CHANNEL; | |
f0706e82 | 4057 | local->scan_channel_idx = 0; |
8318d78a | 4058 | local->scan_band = IEEE80211_BAND_2GHZ; |
f0706e82 JB |
4059 | local->scan_dev = dev; |
4060 | ||
b9e40857 | 4061 | netif_addr_lock_bh(local->mdev); |
4150c572 JB |
4062 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; |
4063 | local->ops->configure_filter(local_to_hw(local), | |
4064 | FIF_BCN_PRBRESP_PROMISC, | |
4065 | &local->filter_flags, | |
4066 | local->mdev->mc_count, | |
4067 | local->mdev->mc_list); | |
b9e40857 | 4068 | netif_addr_unlock_bh(local->mdev); |
f0706e82 JB |
4069 | |
4070 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
4071 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
4072 | IEEE80211_CHANNEL_TIME); | |
4073 | ||
4074 | return 0; | |
4075 | } | |
4076 | ||
4077 | ||
4078 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
4079 | { | |
4080 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4081 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4082 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4083 | ||
51fb61e7 | 4084 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4085 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
4086 | ||
ece8eddd | 4087 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4088 | if (local->scan_dev == dev) |
4089 | return 0; | |
4090 | return -EBUSY; | |
4091 | } | |
4092 | ||
a0af5f14 HS |
4093 | ifsta->scan_ssid_len = ssid_len; |
4094 | if (ssid_len) | |
4095 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
4096 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
4097 | queue_work(local->hw.workqueue, &ifsta->work); | |
4098 | return 0; | |
4099 | } | |
4100 | ||
4101 | static char * | |
4102 | ieee80211_sta_scan_result(struct net_device *dev, | |
ccc58057 | 4103 | struct iw_request_info *info, |
f0706e82 JB |
4104 | struct ieee80211_sta_bss *bss, |
4105 | char *current_ev, char *end_buf) | |
4106 | { | |
4107 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4108 | struct iw_event iwe; | |
4109 | ||
4110 | if (time_after(jiffies, | |
4111 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
4112 | return current_ev; | |
4113 | ||
f0706e82 JB |
4114 | memset(&iwe, 0, sizeof(iwe)); |
4115 | iwe.cmd = SIOCGIWAP; | |
4116 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
4117 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
ccc58057 | 4118 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4119 | IW_EV_ADDR_LEN); |
4120 | ||
4121 | memset(&iwe, 0, sizeof(iwe)); | |
4122 | iwe.cmd = SIOCGIWESSID; | |
902acc78 JB |
4123 | if (bss_mesh_cfg(bss)) { |
4124 | iwe.u.data.length = bss_mesh_id_len(bss); | |
f709fc69 | 4125 | iwe.u.data.flags = 1; |
ccc58057 DM |
4126 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4127 | &iwe, bss_mesh_id(bss)); | |
f709fc69 LCC |
4128 | } else { |
4129 | iwe.u.data.length = bss->ssid_len; | |
4130 | iwe.u.data.flags = 1; | |
ccc58057 DM |
4131 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4132 | &iwe, bss->ssid); | |
f709fc69 | 4133 | } |
f0706e82 | 4134 | |
1d1b5359 LCC |
4135 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) |
4136 | || bss_mesh_cfg(bss)) { | |
f0706e82 JB |
4137 | memset(&iwe, 0, sizeof(iwe)); |
4138 | iwe.cmd = SIOCGIWMODE; | |
902acc78 | 4139 | if (bss_mesh_cfg(bss)) |
f709fc69 LCC |
4140 | iwe.u.mode = IW_MODE_MESH; |
4141 | else if (bss->capability & WLAN_CAPABILITY_ESS) | |
f0706e82 JB |
4142 | iwe.u.mode = IW_MODE_MASTER; |
4143 | else | |
4144 | iwe.u.mode = IW_MODE_ADHOC; | |
ccc58057 DM |
4145 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
4146 | &iwe, IW_EV_UINT_LEN); | |
f0706e82 JB |
4147 | } |
4148 | ||
4149 | memset(&iwe, 0, sizeof(iwe)); | |
4150 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4151 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); |
4152 | iwe.u.freq.e = 0; | |
ccc58057 | 4153 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4154 | IW_EV_FREQ_LEN); |
8318d78a JB |
4155 | |
4156 | memset(&iwe, 0, sizeof(iwe)); | |
4157 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4158 | iwe.u.freq.m = bss->freq; |
4159 | iwe.u.freq.e = 6; | |
ccc58057 | 4160 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4161 | IW_EV_FREQ_LEN); |
f0706e82 JB |
4162 | memset(&iwe, 0, sizeof(iwe)); |
4163 | iwe.cmd = IWEVQUAL; | |
566bfe5a BR |
4164 | iwe.u.qual.qual = bss->qual; |
4165 | iwe.u.qual.level = bss->signal; | |
f0706e82 JB |
4166 | iwe.u.qual.noise = bss->noise; |
4167 | iwe.u.qual.updated = local->wstats_flags; | |
ccc58057 | 4168 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4169 | IW_EV_QUAL_LEN); |
4170 | ||
4171 | memset(&iwe, 0, sizeof(iwe)); | |
4172 | iwe.cmd = SIOCGIWENCODE; | |
4173 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
4174 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
4175 | else | |
4176 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
4177 | iwe.u.data.length = 0; | |
ccc58057 DM |
4178 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4179 | &iwe, ""); | |
f0706e82 JB |
4180 | |
4181 | if (bss && bss->wpa_ie) { | |
4182 | memset(&iwe, 0, sizeof(iwe)); | |
4183 | iwe.cmd = IWEVGENIE; | |
4184 | iwe.u.data.length = bss->wpa_ie_len; | |
ccc58057 DM |
4185 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4186 | &iwe, bss->wpa_ie); | |
f0706e82 JB |
4187 | } |
4188 | ||
4189 | if (bss && bss->rsn_ie) { | |
4190 | memset(&iwe, 0, sizeof(iwe)); | |
4191 | iwe.cmd = IWEVGENIE; | |
4192 | iwe.u.data.length = bss->rsn_ie_len; | |
ccc58057 DM |
4193 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4194 | &iwe, bss->rsn_ie); | |
f0706e82 JB |
4195 | } |
4196 | ||
e623157b EG |
4197 | if (bss && bss->ht_ie) { |
4198 | memset(&iwe, 0, sizeof(iwe)); | |
4199 | iwe.cmd = IWEVGENIE; | |
4200 | iwe.u.data.length = bss->ht_ie_len; | |
ccc58057 DM |
4201 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4202 | &iwe, bss->ht_ie); | |
e623157b EG |
4203 | } |
4204 | ||
f0706e82 JB |
4205 | if (bss && bss->supp_rates_len > 0) { |
4206 | /* display all supported rates in readable format */ | |
ccc58057 | 4207 | char *p = current_ev + iwe_stream_lcp_len(info); |
f0706e82 JB |
4208 | int i; |
4209 | ||
4210 | memset(&iwe, 0, sizeof(iwe)); | |
4211 | iwe.cmd = SIOCGIWRATE; | |
4212 | /* Those two flags are ignored... */ | |
4213 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
4214 | ||
4215 | for (i = 0; i < bss->supp_rates_len; i++) { | |
4216 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
4217 | 0x7f) * 500000); | |
ccc58057 | 4218 | p = iwe_stream_add_value(info, current_ev, p, |
f0706e82 JB |
4219 | end_buf, &iwe, IW_EV_PARAM_LEN); |
4220 | } | |
4221 | current_ev = p; | |
4222 | } | |
4223 | ||
4224 | if (bss) { | |
4225 | char *buf; | |
4226 | buf = kmalloc(30, GFP_ATOMIC); | |
4227 | if (buf) { | |
4228 | memset(&iwe, 0, sizeof(iwe)); | |
4229 | iwe.cmd = IWEVCUSTOM; | |
4230 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
4231 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
4232 | current_ev = iwe_stream_add_point(info, current_ev, |
4233 | end_buf, | |
f0706e82 | 4234 | &iwe, buf); |
bf998f68 EG |
4235 | memset(&iwe, 0, sizeof(iwe)); |
4236 | iwe.cmd = IWEVCUSTOM; | |
4237 | sprintf(buf, " Last beacon: %dms ago", | |
4238 | jiffies_to_msecs(jiffies - bss->last_update)); | |
4239 | iwe.u.data.length = strlen(buf); | |
4240 | current_ev = iwe_stream_add_point(info, current_ev, | |
4241 | end_buf, &iwe, buf); | |
f0706e82 JB |
4242 | kfree(buf); |
4243 | } | |
4244 | } | |
4245 | ||
902acc78 | 4246 | if (bss_mesh_cfg(bss)) { |
f709fc69 | 4247 | char *buf; |
24736701 | 4248 | u8 *cfg = bss_mesh_cfg(bss); |
4f5d4c4d | 4249 | buf = kmalloc(50, GFP_ATOMIC); |
f709fc69 LCC |
4250 | if (buf) { |
4251 | memset(&iwe, 0, sizeof(iwe)); | |
4252 | iwe.cmd = IWEVCUSTOM; | |
24736701 | 4253 | sprintf(buf, "Mesh network (version %d)", cfg[0]); |
4f5d4c4d | 4254 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4255 | current_ev = iwe_stream_add_point(info, current_ev, |
4256 | end_buf, | |
4f5d4c4d LCC |
4257 | &iwe, buf); |
4258 | sprintf(buf, "Path Selection Protocol ID: " | |
24736701 JL |
4259 | "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], |
4260 | cfg[4]); | |
4f5d4c4d | 4261 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4262 | current_ev = iwe_stream_add_point(info, current_ev, |
4263 | end_buf, | |
4f5d4c4d LCC |
4264 | &iwe, buf); |
4265 | sprintf(buf, "Path Selection Metric ID: " | |
24736701 JL |
4266 | "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], |
4267 | cfg[8]); | |
4f5d4c4d | 4268 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4269 | current_ev = iwe_stream_add_point(info, current_ev, |
4270 | end_buf, | |
4f5d4c4d LCC |
4271 | &iwe, buf); |
4272 | sprintf(buf, "Congestion Control Mode ID: " | |
24736701 JL |
4273 | "0x%02X%02X%02X%02X", cfg[9], cfg[10], |
4274 | cfg[11], cfg[12]); | |
4f5d4c4d | 4275 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4276 | current_ev = iwe_stream_add_point(info, current_ev, |
4277 | end_buf, | |
4f5d4c4d LCC |
4278 | &iwe, buf); |
4279 | sprintf(buf, "Channel Precedence: " | |
24736701 JL |
4280 | "0x%02X%02X%02X%02X", cfg[13], cfg[14], |
4281 | cfg[15], cfg[16]); | |
f709fc69 | 4282 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4283 | current_ev = iwe_stream_add_point(info, current_ev, |
4284 | end_buf, | |
f709fc69 LCC |
4285 | &iwe, buf); |
4286 | kfree(buf); | |
4287 | } | |
4288 | } | |
4289 | ||
f0706e82 JB |
4290 | return current_ev; |
4291 | } | |
4292 | ||
4293 | ||
ccc58057 DM |
4294 | int ieee80211_sta_scan_results(struct net_device *dev, |
4295 | struct iw_request_info *info, | |
4296 | char *buf, size_t len) | |
f0706e82 JB |
4297 | { |
4298 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4299 | char *current_ev = buf; | |
4300 | char *end_buf = buf + len; | |
4301 | struct ieee80211_sta_bss *bss; | |
4302 | ||
4303 | spin_lock_bh(&local->sta_bss_lock); | |
4304 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
4305 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
4306 | spin_unlock_bh(&local->sta_bss_lock); | |
4307 | return -E2BIG; | |
4308 | } | |
ccc58057 DM |
4309 | current_ev = ieee80211_sta_scan_result(dev, info, bss, |
4310 | current_ev, end_buf); | |
f0706e82 JB |
4311 | } |
4312 | spin_unlock_bh(&local->sta_bss_lock); | |
4313 | return current_ev - buf; | |
4314 | } | |
4315 | ||
4316 | ||
4317 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
4318 | { | |
4319 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4320 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
988c0f72 | 4321 | |
f0706e82 JB |
4322 | kfree(ifsta->extra_ie); |
4323 | if (len == 0) { | |
4324 | ifsta->extra_ie = NULL; | |
4325 | ifsta->extra_ie_len = 0; | |
4326 | return 0; | |
4327 | } | |
4328 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
4329 | if (!ifsta->extra_ie) { | |
4330 | ifsta->extra_ie_len = 0; | |
4331 | return -ENOMEM; | |
4332 | } | |
4333 | memcpy(ifsta->extra_ie, ie, len); | |
4334 | ifsta->extra_ie_len = len; | |
4335 | return 0; | |
4336 | } | |
4337 | ||
4338 | ||
988c0f72 JB |
4339 | struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, |
4340 | struct sk_buff *skb, u8 *bssid, | |
87291c02 | 4341 | u8 *addr, u64 supp_rates) |
f0706e82 JB |
4342 | { |
4343 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4344 | struct sta_info *sta; | |
91fa558b | 4345 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 4346 | DECLARE_MAC_BUF(mac); |
87291c02 | 4347 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
4348 | |
4349 | /* TODO: Could consider removing the least recently used entry and | |
4350 | * allow new one to be added. */ | |
4351 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
4352 | if (net_ratelimit()) { | |
4353 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 4354 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
4355 | } |
4356 | return NULL; | |
4357 | } | |
4358 | ||
1e188637 | 4359 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
87291c02 VK |
4360 | return NULL; |
4361 | ||
f4ea83dd | 4362 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
0795af57 | 4363 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 4364 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f4ea83dd | 4365 | #endif |
f0706e82 | 4366 | |
73651ee6 JB |
4367 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
4368 | if (!sta) | |
f0706e82 JB |
4369 | return NULL; |
4370 | ||
07346f81 | 4371 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 4372 | |
87291c02 VK |
4373 | if (supp_rates) |
4374 | sta->supp_rates[band] = supp_rates; | |
4375 | else | |
4376 | sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band]; | |
f0706e82 JB |
4377 | |
4378 | rate_control_rate_init(sta, local); | |
4379 | ||
93e5deb1 | 4380 | if (sta_info_insert(sta)) |
73651ee6 | 4381 | return NULL; |
73651ee6 | 4382 | |
d0709a65 | 4383 | return sta; |
f0706e82 JB |
4384 | } |
4385 | ||
4386 | ||
4387 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
4388 | { | |
4389 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4390 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4391 | ||
f4ea83dd | 4392 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f0706e82 JB |
4393 | dev->name, reason); |
4394 | ||
51fb61e7 JB |
4395 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
4396 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
4397 | return -EINVAL; |
4398 | ||
4399 | ieee80211_send_deauth(dev, ifsta, reason); | |
4400 | ieee80211_set_disassoc(dev, ifsta, 1); | |
4401 | return 0; | |
4402 | } | |
4403 | ||
4404 | ||
4405 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
4406 | { | |
4407 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4408 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4409 | ||
f4ea83dd | 4410 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f0706e82 JB |
4411 | dev->name, reason); |
4412 | ||
51fb61e7 | 4413 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4414 | return -EINVAL; |
4415 | ||
d6f2da5b | 4416 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4417 | return -1; |
4418 | ||
4419 | ieee80211_send_disassoc(dev, ifsta, reason); | |
4420 | ieee80211_set_disassoc(dev, ifsta, 0); | |
4421 | return 0; | |
4422 | } | |
84363e6e MA |
4423 | |
4424 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
4425 | enum ieee80211_notification_types notif_type) | |
4426 | { | |
4427 | struct ieee80211_local *local = hw_to_local(hw); | |
4428 | struct ieee80211_sub_if_data *sdata; | |
4429 | ||
4430 | switch (notif_type) { | |
4431 | case IEEE80211_NOTIFY_RE_ASSOC: | |
4432 | rcu_read_lock(); | |
4433 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
3e122be0 JB |
4434 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
4435 | continue; | |
84363e6e | 4436 | |
3e122be0 | 4437 | ieee80211_sta_req_auth(sdata->dev, &sdata->u.sta); |
84363e6e MA |
4438 | } |
4439 | rcu_read_unlock(); | |
4440 | break; | |
4441 | } | |
4442 | } | |
4443 | EXPORT_SYMBOL(ieee80211_notify_mac); |