Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
4 | * Copyright 2004, Instant802 Networks, Inc. | |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | /* TODO: | |
f0706e82 JB |
15 | * order BSS list by RSSI(?) ("quality of AP") |
16 | * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, | |
17 | * SSID) | |
18 | */ | |
5b323edb | 19 | #include <linux/delay.h> |
f0706e82 JB |
20 | #include <linux/if_ether.h> |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/wireless.h> | |
25 | #include <linux/random.h> | |
26 | #include <linux/etherdevice.h> | |
d0709a65 | 27 | #include <linux/rtnetlink.h> |
f0706e82 JB |
28 | #include <net/iw_handler.h> |
29 | #include <asm/types.h> | |
f0706e82 JB |
30 | |
31 | #include <net/mac80211.h> | |
32 | #include "ieee80211_i.h" | |
2c8dccc7 JB |
33 | #include "rate.h" |
34 | #include "led.h" | |
f709fc69 | 35 | #include "mesh.h" |
f0706e82 JB |
36 | |
37 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
39 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
40 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
41 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 42 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
43 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
44 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
45 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
46 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 47 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 JB |
48 | |
49 | #define IEEE80211_PROBE_DELAY (HZ / 33) | |
50 | #define IEEE80211_CHANNEL_TIME (HZ / 33) | |
51 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) | |
52 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
53 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) | |
54 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 55 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
56 | |
57 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
58 | ||
59 | ||
f0706e82 JB |
60 | #define ERP_INFO_USE_PROTECTION BIT(1) |
61 | ||
9f985b0e RR |
62 | /* mgmt header + 1 byte action code */ |
63 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) | |
64 | ||
65 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
66 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
67 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
688b88a4 RR |
68 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
69 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
9f985b0e | 70 | |
07db2183 RR |
71 | /* next values represent the buffer size for A-MPDU frame. |
72 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ | |
73 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
74 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
75 | ||
f0706e82 JB |
76 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, |
77 | u8 *ssid, size_t ssid_len); | |
78 | static struct ieee80211_sta_bss * | |
8318d78a | 79 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 80 | u8 *ssid, u8 ssid_len); |
f0706e82 JB |
81 | static void ieee80211_rx_bss_put(struct net_device *dev, |
82 | struct ieee80211_sta_bss *bss); | |
83 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
84 | struct ieee80211_if_sta *ifsta); | |
85 | static int ieee80211_sta_wep_configured(struct net_device *dev); | |
86 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
87 | u8 *ssid, size_t ssid_len); | |
88 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
89 | struct ieee80211_if_sta *ifsta); | |
712590de | 90 | static void sta_rx_agg_session_timer_expired(unsigned long data); |
f0706e82 JB |
91 | |
92 | ||
ee385855 LCC |
93 | void ieee802_11_parse_elems(u8 *start, size_t len, |
94 | struct ieee802_11_elems *elems) | |
f0706e82 JB |
95 | { |
96 | size_t left = len; | |
97 | u8 *pos = start; | |
f0706e82 JB |
98 | |
99 | memset(elems, 0, sizeof(*elems)); | |
100 | ||
101 | while (left >= 2) { | |
102 | u8 id, elen; | |
103 | ||
104 | id = *pos++; | |
105 | elen = *pos++; | |
106 | left -= 2; | |
107 | ||
67a4cce4 JL |
108 | if (elen > left) |
109 | return; | |
f0706e82 JB |
110 | |
111 | switch (id) { | |
112 | case WLAN_EID_SSID: | |
113 | elems->ssid = pos; | |
114 | elems->ssid_len = elen; | |
115 | break; | |
116 | case WLAN_EID_SUPP_RATES: | |
117 | elems->supp_rates = pos; | |
118 | elems->supp_rates_len = elen; | |
119 | break; | |
120 | case WLAN_EID_FH_PARAMS: | |
121 | elems->fh_params = pos; | |
122 | elems->fh_params_len = elen; | |
123 | break; | |
124 | case WLAN_EID_DS_PARAMS: | |
125 | elems->ds_params = pos; | |
126 | elems->ds_params_len = elen; | |
127 | break; | |
128 | case WLAN_EID_CF_PARAMS: | |
129 | elems->cf_params = pos; | |
130 | elems->cf_params_len = elen; | |
131 | break; | |
132 | case WLAN_EID_TIM: | |
133 | elems->tim = pos; | |
134 | elems->tim_len = elen; | |
135 | break; | |
136 | case WLAN_EID_IBSS_PARAMS: | |
137 | elems->ibss_params = pos; | |
138 | elems->ibss_params_len = elen; | |
139 | break; | |
140 | case WLAN_EID_CHALLENGE: | |
141 | elems->challenge = pos; | |
142 | elems->challenge_len = elen; | |
143 | break; | |
144 | case WLAN_EID_WPA: | |
145 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
146 | pos[2] == 0xf2) { | |
147 | /* Microsoft OUI (00:50:F2) */ | |
148 | if (pos[3] == 1) { | |
149 | /* OUI Type 1 - WPA IE */ | |
150 | elems->wpa = pos; | |
151 | elems->wpa_len = elen; | |
152 | } else if (elen >= 5 && pos[3] == 2) { | |
153 | if (pos[4] == 0) { | |
154 | elems->wmm_info = pos; | |
155 | elems->wmm_info_len = elen; | |
156 | } else if (pos[4] == 1) { | |
157 | elems->wmm_param = pos; | |
158 | elems->wmm_param_len = elen; | |
159 | } | |
160 | } | |
161 | } | |
162 | break; | |
163 | case WLAN_EID_RSN: | |
164 | elems->rsn = pos; | |
165 | elems->rsn_len = elen; | |
166 | break; | |
167 | case WLAN_EID_ERP_INFO: | |
168 | elems->erp_info = pos; | |
169 | elems->erp_info_len = elen; | |
170 | break; | |
171 | case WLAN_EID_EXT_SUPP_RATES: | |
172 | elems->ext_supp_rates = pos; | |
173 | elems->ext_supp_rates_len = elen; | |
174 | break; | |
c7153508 RR |
175 | case WLAN_EID_HT_CAPABILITY: |
176 | elems->ht_cap_elem = pos; | |
177 | elems->ht_cap_elem_len = elen; | |
178 | break; | |
179 | case WLAN_EID_HT_EXTRA_INFO: | |
180 | elems->ht_info_elem = pos; | |
181 | elems->ht_info_elem_len = elen; | |
182 | break; | |
ee385855 LCC |
183 | case WLAN_EID_MESH_ID: |
184 | elems->mesh_id = pos; | |
185 | elems->mesh_id_len = elen; | |
186 | break; | |
187 | case WLAN_EID_MESH_CONFIG: | |
188 | elems->mesh_config = pos; | |
189 | elems->mesh_config_len = elen; | |
190 | break; | |
191 | case WLAN_EID_PEER_LINK: | |
192 | elems->peer_link = pos; | |
193 | elems->peer_link_len = elen; | |
194 | break; | |
195 | case WLAN_EID_PREQ: | |
196 | elems->preq = pos; | |
197 | elems->preq_len = elen; | |
198 | break; | |
199 | case WLAN_EID_PREP: | |
200 | elems->prep = pos; | |
201 | elems->prep_len = elen; | |
202 | break; | |
203 | case WLAN_EID_PERR: | |
204 | elems->perr = pos; | |
205 | elems->perr_len = elen; | |
206 | break; | |
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); | |
3330d7be JB |
348 | params.txop = pos[2] | (pos[3] << 8); |
349 | #ifdef CONFIG_MAC80211_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; |
5628221c | 369 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 370 | DECLARE_MAC_BUF(mac); |
471b3efd | 371 | u32 changed = 0; |
5628221c | 372 | |
471b3efd | 373 | if (use_protection != bss_conf->use_cts_prot) { |
5628221c DD |
374 | if (net_ratelimit()) { |
375 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 376 | "%s)\n", |
471b3efd | 377 | sdata->dev->name, |
5628221c | 378 | use_protection ? "enabled" : "disabled", |
0795af57 | 379 | print_mac(mac, ifsta->bssid)); |
5628221c | 380 | } |
471b3efd JB |
381 | bss_conf->use_cts_prot = use_protection; |
382 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 383 | } |
7e9ed188 | 384 | |
d43c7b37 | 385 | if (use_short_preamble != bss_conf->use_short_preamble) { |
7e9ed188 DD |
386 | if (net_ratelimit()) { |
387 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 388 | " (BSSID=%s)\n", |
471b3efd | 389 | sdata->dev->name, |
d43c7b37 | 390 | use_short_preamble ? "short" : "long", |
0795af57 | 391 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 392 | } |
d43c7b37 | 393 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 394 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 395 | } |
d9430a32 | 396 | |
471b3efd | 397 | return changed; |
5628221c DD |
398 | } |
399 | ||
50c4afb9 JL |
400 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
401 | u8 erp_value) | |
402 | { | |
403 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
404 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
405 | ||
406 | return ieee80211_handle_protect_preamb(sdata, | |
407 | use_protection, use_short_preamble); | |
408 | } | |
409 | ||
410 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
411 | struct ieee80211_sta_bss *bss) | |
412 | { | |
413 | u32 changed = 0; | |
414 | ||
415 | if (bss->has_erp_value) | |
416 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
417 | else { | |
418 | u16 capab = bss->capability; | |
419 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
420 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
421 | } | |
422 | ||
423 | return changed; | |
424 | } | |
425 | ||
c7153508 RR |
426 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
427 | struct ieee80211_ht_info *ht_info) | |
428 | { | |
429 | ||
430 | if (ht_info == NULL) | |
431 | return -EINVAL; | |
432 | ||
433 | memset(ht_info, 0, sizeof(*ht_info)); | |
434 | ||
435 | if (ht_cap_ie) { | |
436 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
437 | ||
438 | ht_info->ht_supported = 1; | |
439 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
440 | ht_info->ampdu_factor = | |
441 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
442 | ht_info->ampdu_density = | |
443 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
444 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
445 | } else | |
446 | ht_info->ht_supported = 0; | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
452 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
453 | struct ieee80211_ht_bss_info *bss_info) | |
454 | { | |
455 | if (bss_info == NULL) | |
456 | return -EINVAL; | |
457 | ||
458 | memset(bss_info, 0, sizeof(*bss_info)); | |
459 | ||
460 | if (ht_add_info_ie) { | |
461 | u16 op_mode; | |
462 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
463 | ||
464 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
465 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
466 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
5628221c | 471 | |
f0706e82 JB |
472 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
473 | struct ieee80211_if_sta *ifsta) | |
474 | { | |
475 | char *buf; | |
476 | size_t len; | |
477 | int i; | |
478 | union iwreq_data wrqu; | |
479 | ||
480 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) | |
481 | return; | |
482 | ||
483 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + | |
0ec0b7ac | 484 | ifsta->assocresp_ies_len), GFP_KERNEL); |
f0706e82 JB |
485 | if (!buf) |
486 | return; | |
487 | ||
488 | len = sprintf(buf, "ASSOCINFO("); | |
489 | if (ifsta->assocreq_ies) { | |
490 | len += sprintf(buf + len, "ReqIEs="); | |
491 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { | |
492 | len += sprintf(buf + len, "%02x", | |
493 | ifsta->assocreq_ies[i]); | |
494 | } | |
495 | } | |
496 | if (ifsta->assocresp_ies) { | |
497 | if (ifsta->assocreq_ies) | |
498 | len += sprintf(buf + len, " "); | |
499 | len += sprintf(buf + len, "RespIEs="); | |
500 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
501 | len += sprintf(buf + len, "%02x", | |
502 | ifsta->assocresp_ies[i]); | |
503 | } | |
504 | } | |
505 | len += sprintf(buf + len, ")"); | |
506 | ||
507 | if (len > IW_CUSTOM_MAX) { | |
508 | len = sprintf(buf, "ASSOCRESPIE="); | |
509 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
510 | len += sprintf(buf + len, "%02x", | |
511 | ifsta->assocresp_ies[i]); | |
512 | } | |
513 | } | |
514 | ||
515 | memset(&wrqu, 0, sizeof(wrqu)); | |
516 | wrqu.data.length = len; | |
517 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
518 | ||
519 | kfree(buf); | |
520 | } | |
521 | ||
522 | ||
523 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 524 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 525 | bool assoc) |
f0706e82 | 526 | { |
471b3efd JB |
527 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
528 | struct ieee80211_local *local = sdata->local; | |
38668c05 | 529 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 530 | union iwreq_data wrqu; |
471b3efd | 531 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 532 | |
f0706e82 | 533 | if (assoc) { |
5628221c | 534 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
535 | |
536 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
537 | ||
51fb61e7 | 538 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 539 | return; |
5628221c | 540 | |
65c107ab | 541 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
38668c05 | 542 | conf->channel->center_freq, |
cffdd30d | 543 | ifsta->ssid, ifsta->ssid_len); |
5628221c | 544 | if (bss) { |
21c0cbe7 TW |
545 | /* set timing information */ |
546 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
547 | sdata->bss_conf.timestamp = bss->timestamp; | |
548 | ||
50c4afb9 | 549 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
21c0cbe7 | 550 | |
5628221c DD |
551 | ieee80211_rx_bss_put(dev, bss); |
552 | } | |
553 | ||
38668c05 TW |
554 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
555 | changed |= BSS_CHANGED_HT; | |
556 | sdata->bss_conf.assoc_ht = 1; | |
557 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
558 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
559 | } | |
560 | ||
f0706e82 | 561 | netif_carrier_on(dev); |
d6f2da5b | 562 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
563 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
564 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
565 | ieee80211_sta_send_associnfo(dev, ifsta); | |
566 | } else { | |
85249e5f | 567 | ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid); |
d6f2da5b | 568 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
f0706e82 | 569 | netif_carrier_off(dev); |
d9430a32 | 570 | ieee80211_reset_erp_info(dev); |
38668c05 TW |
571 | |
572 | sdata->bss_conf.assoc_ht = 0; | |
573 | sdata->bss_conf.ht_conf = NULL; | |
574 | sdata->bss_conf.ht_bss_conf = NULL; | |
575 | ||
f0706e82 JB |
576 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
577 | } | |
f0706e82 | 578 | ifsta->last_probe = jiffies; |
47f0c502 | 579 | ieee80211_led_assoc(local, assoc); |
471b3efd | 580 | |
b2205256 | 581 | sdata->bss_conf.assoc = assoc; |
471b3efd | 582 | ieee80211_bss_info_change_notify(sdata, changed); |
41a7be48 RC |
583 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
584 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
f0706e82 JB |
585 | } |
586 | ||
587 | static void ieee80211_set_disassoc(struct net_device *dev, | |
588 | struct ieee80211_if_sta *ifsta, int deauth) | |
589 | { | |
590 | if (deauth) | |
591 | ifsta->auth_tries = 0; | |
592 | ifsta->assoc_tries = 0; | |
593 | ieee80211_set_associated(dev, ifsta, 0); | |
594 | } | |
595 | ||
ee385855 LCC |
596 | void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, |
597 | int encrypt) | |
f0706e82 JB |
598 | { |
599 | struct ieee80211_sub_if_data *sdata; | |
e039fa4a | 600 | struct ieee80211_tx_info *info; |
f0706e82 JB |
601 | |
602 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
603 | skb->dev = sdata->local->mdev; | |
604 | skb_set_mac_header(skb, 0); | |
605 | skb_set_network_header(skb, 0); | |
606 | skb_set_transport_header(skb, 0); | |
607 | ||
e039fa4a JB |
608 | info = IEEE80211_SKB_CB(skb); |
609 | memset(info, 0, sizeof(struct ieee80211_tx_info)); | |
610 | info->control.ifindex = sdata->dev->ifindex; | |
e8bf9649 | 611 | if (!encrypt) |
e039fa4a | 612 | info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT; |
f0706e82 JB |
613 | |
614 | dev_queue_xmit(skb); | |
615 | } | |
616 | ||
617 | ||
618 | static void ieee80211_send_auth(struct net_device *dev, | |
619 | struct ieee80211_if_sta *ifsta, | |
620 | int transaction, u8 *extra, size_t extra_len, | |
621 | int encrypt) | |
622 | { | |
623 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
624 | struct sk_buff *skb; | |
625 | struct ieee80211_mgmt *mgmt; | |
626 | ||
627 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
628 | sizeof(*mgmt) + 6 + extra_len); | |
629 | if (!skb) { | |
630 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
631 | "frame\n", dev->name); | |
632 | return; | |
633 | } | |
634 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
635 | ||
636 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
637 | memset(mgmt, 0, 24 + 6); | |
638 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
639 | IEEE80211_STYPE_AUTH); | |
640 | if (encrypt) | |
641 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
642 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
643 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
644 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
645 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
646 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
647 | ifsta->auth_transaction = transaction + 1; | |
648 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
649 | if (extra) | |
650 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
651 | ||
652 | ieee80211_sta_tx(dev, skb, encrypt); | |
653 | } | |
654 | ||
655 | ||
656 | static void ieee80211_authenticate(struct net_device *dev, | |
657 | struct ieee80211_if_sta *ifsta) | |
658 | { | |
0795af57 JP |
659 | DECLARE_MAC_BUF(mac); |
660 | ||
f0706e82 JB |
661 | ifsta->auth_tries++; |
662 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 663 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 664 | " timed out\n", |
0795af57 | 665 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
666 | ifsta->state = IEEE80211_DISABLED; |
667 | return; | |
668 | } | |
669 | ||
670 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
671 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
672 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
673 | |
674 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
675 | ||
676 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
677 | } | |
678 | ||
36d16ae7 HS |
679 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
680 | struct ieee80211_supported_band *sband, | |
681 | u64 *rates) | |
682 | { | |
683 | int i, j, count; | |
684 | *rates = 0; | |
685 | count = 0; | |
686 | for (i = 0; i < bss->supp_rates_len; i++) { | |
687 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
688 | ||
689 | for (j = 0; j < sband->n_bitrates; j++) | |
690 | if (sband->bitrates[j].bitrate == rate) { | |
691 | *rates |= BIT(j); | |
692 | count++; | |
693 | break; | |
694 | } | |
695 | } | |
696 | ||
697 | return count; | |
698 | } | |
f0706e82 JB |
699 | |
700 | static void ieee80211_send_assoc(struct net_device *dev, | |
701 | struct ieee80211_if_sta *ifsta) | |
702 | { | |
703 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f0706e82 JB |
704 | struct sk_buff *skb; |
705 | struct ieee80211_mgmt *mgmt; | |
706 | u8 *pos, *ies; | |
36d16ae7 | 707 | int i, len, count, rates_len, supp_rates_len; |
f0706e82 JB |
708 | u16 capab; |
709 | struct ieee80211_sta_bss *bss; | |
710 | int wmm = 0; | |
8318d78a | 711 | struct ieee80211_supported_band *sband; |
36d16ae7 | 712 | u64 rates = 0; |
f0706e82 JB |
713 | |
714 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
715 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
716 | ifsta->ssid_len); | |
717 | if (!skb) { | |
718 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
719 | "frame\n", dev->name); | |
720 | return; | |
721 | } | |
722 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
723 | ||
8318d78a JB |
724 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
725 | ||
f0706e82 | 726 | capab = ifsta->capab; |
8318d78a JB |
727 | |
728 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
729 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
730 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
731 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
732 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
f0706e82 | 733 | } |
8318d78a JB |
734 | |
735 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, | |
736 | local->hw.conf.channel->center_freq, | |
cffdd30d | 737 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
738 | if (bss) { |
739 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
740 | capab |= WLAN_CAPABILITY_PRIVACY; | |
988c0f72 | 741 | if (bss->wmm_ie) |
f0706e82 | 742 | wmm = 1; |
0d580a77 HS |
743 | |
744 | /* get all rates supported by the device and the AP as | |
745 | * some APs don't like getting a superset of their rates | |
746 | * in the association request (e.g. D-Link DAP 1353 in | |
747 | * b-only mode) */ | |
748 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
749 | ||
06ff47bc TW |
750 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
751 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
752 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
753 | ||
f0706e82 | 754 | ieee80211_rx_bss_put(dev, bss); |
0d580a77 HS |
755 | } else { |
756 | rates = ~0; | |
757 | rates_len = sband->n_bitrates; | |
f0706e82 JB |
758 | } |
759 | ||
760 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
761 | memset(mgmt, 0, 24); | |
762 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
763 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
764 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
765 | ||
d6f2da5b | 766 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
767 | skb_put(skb, 10); |
768 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
769 | IEEE80211_STYPE_REASSOC_REQ); | |
770 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
771 | mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1); | |
772 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
773 | ETH_ALEN); | |
774 | } else { | |
775 | skb_put(skb, 4); | |
776 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
777 | IEEE80211_STYPE_ASSOC_REQ); | |
778 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
779 | mgmt->u.assoc_req.listen_interval = cpu_to_le16(1); | |
780 | } | |
781 | ||
782 | /* SSID */ | |
783 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
784 | *pos++ = WLAN_EID_SSID; | |
785 | *pos++ = ifsta->ssid_len; | |
786 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
787 | ||
0d580a77 | 788 | /* add all rates which were marked to be used above */ |
36d16ae7 HS |
789 | supp_rates_len = rates_len; |
790 | if (supp_rates_len > 8) | |
791 | supp_rates_len = 8; | |
792 | ||
8318d78a | 793 | len = sband->n_bitrates; |
36d16ae7 | 794 | pos = skb_put(skb, supp_rates_len + 2); |
f0706e82 | 795 | *pos++ = WLAN_EID_SUPP_RATES; |
36d16ae7 | 796 | *pos++ = supp_rates_len; |
f0706e82 | 797 | |
36d16ae7 HS |
798 | count = 0; |
799 | for (i = 0; i < sband->n_bitrates; i++) { | |
800 | if (BIT(i) & rates) { | |
8318d78a | 801 | int rate = sband->bitrates[i].bitrate; |
f0706e82 | 802 | *pos++ = (u8) (rate / 5); |
36d16ae7 HS |
803 | if (++count == 8) |
804 | break; | |
805 | } | |
806 | } | |
807 | ||
808 | if (count == 8) { | |
809 | pos = skb_put(skb, rates_len - count + 2); | |
810 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
811 | *pos++ = rates_len - count; | |
812 | ||
813 | for (i++; i < sband->n_bitrates; i++) { | |
814 | if (BIT(i) & rates) { | |
815 | int rate = sband->bitrates[i].bitrate; | |
816 | *pos++ = (u8) (rate / 5); | |
817 | } | |
f0706e82 JB |
818 | } |
819 | } | |
820 | ||
06ff47bc TW |
821 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
822 | /* 1. power capabilities */ | |
823 | pos = skb_put(skb, 4); | |
824 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
825 | *pos++ = 2; | |
826 | *pos++ = 0; /* min tx power */ | |
827 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
828 | ||
829 | /* 2. supported channels */ | |
830 | /* TODO: get this in reg domain format */ | |
831 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
832 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
833 | *pos++ = 2 * sband->n_channels; | |
834 | for (i = 0; i < sband->n_channels; i++) { | |
835 | *pos++ = ieee80211_frequency_to_channel( | |
836 | sband->channels[i].center_freq); | |
837 | *pos++ = 1; /* one channel in the subband*/ | |
838 | } | |
839 | } | |
840 | ||
f0706e82 JB |
841 | if (ifsta->extra_ie) { |
842 | pos = skb_put(skb, ifsta->extra_ie_len); | |
843 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
844 | } | |
845 | ||
d6f2da5b | 846 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
847 | pos = skb_put(skb, 9); |
848 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
849 | *pos++ = 7; /* len */ | |
850 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
851 | *pos++ = 0x50; | |
852 | *pos++ = 0xf2; | |
853 | *pos++ = 2; /* WME */ | |
854 | *pos++ = 0; /* WME info */ | |
855 | *pos++ = 1; /* WME ver */ | |
856 | *pos++ = 0; | |
857 | } | |
3434fbd3 | 858 | |
c7153508 | 859 | /* wmm support is a must to HT */ |
3434fbd3 | 860 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
9306102e EG |
861 | sband->ht_info.ht_supported && bss->ht_add_ie) { |
862 | struct ieee80211_ht_addt_info *ht_add_info = | |
863 | (struct ieee80211_ht_addt_info *)bss->ht_add_ie; | |
864 | u16 cap = sband->ht_info.cap; | |
865 | __le16 tmp; | |
866 | u32 flags = local->hw.conf.channel->flags; | |
867 | ||
868 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
869 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
870 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
871 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
872 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
873 | } | |
874 | break; | |
875 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
876 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
877 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
878 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
879 | } | |
880 | break; | |
881 | } | |
882 | ||
883 | tmp = cpu_to_le16(cap); | |
c7153508 RR |
884 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
885 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
886 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
887 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
888 | memcpy(pos, &tmp, sizeof(u16)); | |
889 | pos += sizeof(u16); | |
8318d78a JB |
890 | /* TODO: needs a define here for << 2 */ |
891 | *pos++ = sband->ht_info.ampdu_factor | | |
892 | (sband->ht_info.ampdu_density << 2); | |
893 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
c7153508 | 894 | } |
f0706e82 JB |
895 | |
896 | kfree(ifsta->assocreq_ies); | |
897 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 898 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
899 | if (ifsta->assocreq_ies) |
900 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
901 | ||
902 | ieee80211_sta_tx(dev, skb, 0); | |
903 | } | |
904 | ||
905 | ||
906 | static void ieee80211_send_deauth(struct net_device *dev, | |
907 | struct ieee80211_if_sta *ifsta, u16 reason) | |
908 | { | |
909 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
910 | struct sk_buff *skb; | |
911 | struct ieee80211_mgmt *mgmt; | |
912 | ||
913 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
914 | if (!skb) { | |
915 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
916 | "frame\n", dev->name); | |
917 | return; | |
918 | } | |
919 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
920 | ||
921 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
922 | memset(mgmt, 0, 24); | |
923 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
924 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
925 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
926 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
927 | IEEE80211_STYPE_DEAUTH); | |
928 | skb_put(skb, 2); | |
929 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
930 | ||
931 | ieee80211_sta_tx(dev, skb, 0); | |
932 | } | |
933 | ||
934 | ||
935 | static void ieee80211_send_disassoc(struct net_device *dev, | |
936 | struct ieee80211_if_sta *ifsta, u16 reason) | |
937 | { | |
938 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
939 | struct sk_buff *skb; | |
940 | struct ieee80211_mgmt *mgmt; | |
941 | ||
942 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
943 | if (!skb) { | |
944 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
945 | "frame\n", dev->name); | |
946 | return; | |
947 | } | |
948 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
949 | ||
950 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
951 | memset(mgmt, 0, 24); | |
952 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
953 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
954 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
955 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
956 | IEEE80211_STYPE_DISASSOC); | |
957 | skb_put(skb, 2); | |
958 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
959 | ||
960 | ieee80211_sta_tx(dev, skb, 0); | |
961 | } | |
962 | ||
963 | ||
964 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
965 | struct ieee80211_if_sta *ifsta) | |
966 | { | |
65c107ab | 967 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 968 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
969 | int bss_privacy; |
970 | int wep_privacy; | |
971 | int privacy_invoked; | |
f0706e82 | 972 | |
5b98b1f7 | 973 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
974 | return 0; |
975 | ||
8318d78a JB |
976 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
977 | local->hw.conf.channel->center_freq, | |
cffdd30d | 978 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
979 | if (!bss) |
980 | return 0; | |
981 | ||
5b98b1f7 JB |
982 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
983 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
984 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 JB |
985 | |
986 | ieee80211_rx_bss_put(dev, bss); | |
987 | ||
5b98b1f7 JB |
988 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
989 | return 0; | |
990 | ||
991 | return 1; | |
f0706e82 JB |
992 | } |
993 | ||
994 | ||
995 | static void ieee80211_associate(struct net_device *dev, | |
996 | struct ieee80211_if_sta *ifsta) | |
997 | { | |
0795af57 JP |
998 | DECLARE_MAC_BUF(mac); |
999 | ||
f0706e82 JB |
1000 | ifsta->assoc_tries++; |
1001 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 1002 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 1003 | " timed out\n", |
0795af57 | 1004 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
1005 | ifsta->state = IEEE80211_DISABLED; |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
1010 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
1011 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1012 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
1013 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
1014 | "mixed-cell disabled - abort association\n", dev->name); | |
1015 | ifsta->state = IEEE80211_DISABLED; | |
1016 | return; | |
1017 | } | |
1018 | ||
1019 | ieee80211_send_assoc(dev, ifsta); | |
1020 | ||
1021 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
1022 | } | |
1023 | ||
1024 | ||
1025 | static void ieee80211_associated(struct net_device *dev, | |
1026 | struct ieee80211_if_sta *ifsta) | |
1027 | { | |
1028 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1029 | struct sta_info *sta; | |
1030 | int disassoc; | |
0795af57 | 1031 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1032 | |
1033 | /* TODO: start monitoring current AP signal quality and number of | |
1034 | * missed beacons. Scan other channels every now and then and search | |
1035 | * for better APs. */ | |
1036 | /* TODO: remove expired BSSes */ | |
1037 | ||
1038 | ifsta->state = IEEE80211_ASSOCIATED; | |
1039 | ||
d0709a65 JB |
1040 | rcu_read_lock(); |
1041 | ||
f0706e82 JB |
1042 | sta = sta_info_get(local, ifsta->bssid); |
1043 | if (!sta) { | |
0795af57 JP |
1044 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
1045 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1046 | disassoc = 1; |
1047 | } else { | |
1048 | disassoc = 0; | |
1049 | if (time_after(jiffies, | |
1050 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 1051 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 1052 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 1053 | "current AP %s - assume out of " |
f0706e82 | 1054 | "range\n", |
0795af57 | 1055 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 1056 | disassoc = 1; |
d0709a65 | 1057 | sta_info_unlink(&sta); |
d6f2da5b | 1058 | } else |
f0706e82 JB |
1059 | ieee80211_send_probe_req(dev, ifsta->bssid, |
1060 | local->scan_ssid, | |
1061 | local->scan_ssid_len); | |
d6f2da5b | 1062 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 1063 | } else { |
d6f2da5b | 1064 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
1065 | if (time_after(jiffies, ifsta->last_probe + |
1066 | IEEE80211_PROBE_INTERVAL)) { | |
1067 | ifsta->last_probe = jiffies; | |
1068 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
1069 | ifsta->ssid, | |
1070 | ifsta->ssid_len); | |
1071 | } | |
1072 | } | |
f0706e82 | 1073 | } |
d0709a65 JB |
1074 | |
1075 | rcu_read_unlock(); | |
1076 | ||
3b96766f | 1077 | if (disassoc && sta) |
d0709a65 | 1078 | sta_info_destroy(sta); |
d0709a65 | 1079 | |
f0706e82 | 1080 | if (disassoc) { |
2d192d95 MW |
1081 | ifsta->state = IEEE80211_DISABLED; |
1082 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
1083 | } else { |
1084 | mod_timer(&ifsta->timer, jiffies + | |
1085 | IEEE80211_MONITORING_INTERVAL); | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | ||
1090 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
1091 | u8 *ssid, size_t ssid_len) | |
1092 | { | |
1093 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 1094 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
1095 | struct sk_buff *skb; |
1096 | struct ieee80211_mgmt *mgmt; | |
1097 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
1098 | int i; | |
1099 | ||
1100 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
1101 | if (!skb) { | |
1102 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
1103 | "request\n", dev->name); | |
1104 | return; | |
1105 | } | |
1106 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1107 | ||
1108 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1109 | memset(mgmt, 0, 24); | |
1110 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1111 | IEEE80211_STYPE_PROBE_REQ); | |
1112 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1113 | if (dst) { | |
1114 | memcpy(mgmt->da, dst, ETH_ALEN); | |
1115 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
1116 | } else { | |
1117 | memset(mgmt->da, 0xff, ETH_ALEN); | |
1118 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
1119 | } | |
1120 | pos = skb_put(skb, 2 + ssid_len); | |
1121 | *pos++ = WLAN_EID_SSID; | |
1122 | *pos++ = ssid_len; | |
1123 | memcpy(pos, ssid, ssid_len); | |
1124 | ||
1125 | supp_rates = skb_put(skb, 2); | |
1126 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
1127 | supp_rates[1] = 0; | |
8318d78a JB |
1128 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
1129 | ||
1130 | for (i = 0; i < sband->n_bitrates; i++) { | |
1131 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
f0706e82 JB |
1132 | if (esupp_rates) { |
1133 | pos = skb_put(skb, 1); | |
1134 | esupp_rates[1]++; | |
1135 | } else if (supp_rates[1] == 8) { | |
1136 | esupp_rates = skb_put(skb, 3); | |
1137 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
1138 | esupp_rates[1] = 1; | |
1139 | pos = &esupp_rates[2]; | |
1140 | } else { | |
1141 | pos = skb_put(skb, 1); | |
1142 | supp_rates[1]++; | |
1143 | } | |
8318d78a | 1144 | *pos = rate->bitrate / 5; |
f0706e82 JB |
1145 | } |
1146 | ||
1147 | ieee80211_sta_tx(dev, skb, 0); | |
1148 | } | |
1149 | ||
1150 | ||
1151 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
1152 | { | |
1153 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1154 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 1155 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
1156 | return 0; |
1157 | return 1; | |
1158 | } | |
1159 | ||
1160 | ||
1161 | static void ieee80211_auth_completed(struct net_device *dev, | |
1162 | struct ieee80211_if_sta *ifsta) | |
1163 | { | |
1164 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 1165 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1166 | ieee80211_associate(dev, ifsta); |
1167 | } | |
1168 | ||
1169 | ||
1170 | static void ieee80211_auth_challenge(struct net_device *dev, | |
1171 | struct ieee80211_if_sta *ifsta, | |
1172 | struct ieee80211_mgmt *mgmt, | |
1173 | size_t len) | |
1174 | { | |
1175 | u8 *pos; | |
1176 | struct ieee802_11_elems elems; | |
1177 | ||
1178 | printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name); | |
1179 | pos = mgmt->u.auth.variable; | |
67a4cce4 | 1180 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1181 | if (!elems.challenge) { |
1182 | printk(KERN_DEBUG "%s: no challenge IE in shared key auth " | |
1183 | "frame\n", dev->name); | |
1184 | return; | |
1185 | } | |
1186 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, | |
1187 | elems.challenge_len + 2, 1); | |
1188 | } | |
1189 | ||
9f985b0e RR |
1190 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
1191 | u8 dialog_token, u16 status, u16 policy, | |
1192 | u16 buf_size, u16 timeout) | |
1193 | { | |
1194 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1195 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1196 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1197 | struct sk_buff *skb; | |
1198 | struct ieee80211_mgmt *mgmt; | |
1199 | u16 capab; | |
1200 | ||
3acea5b6 EK |
1201 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
1202 | ||
9f985b0e RR |
1203 | if (!skb) { |
1204 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1205 | "for addba resp frame\n", dev->name); | |
1206 | return; | |
1207 | } | |
1208 | ||
1209 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1210 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1211 | memset(mgmt, 0, 24); | |
1212 | memcpy(mgmt->da, da, ETH_ALEN); | |
1213 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1214 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1215 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1216 | else | |
1217 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1218 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1219 | IEEE80211_STYPE_ACTION); | |
1220 | ||
1221 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1222 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1223 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1224 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1225 | ||
1226 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1227 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1228 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1229 | ||
1230 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1231 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1232 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1233 | ||
1234 | ieee80211_sta_tx(dev, skb, 0); | |
1235 | ||
1236 | return; | |
1237 | } | |
1238 | ||
eadc8d9e RR |
1239 | void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, |
1240 | u16 tid, u8 dialog_token, u16 start_seq_num, | |
1241 | u16 agg_size, u16 timeout) | |
1242 | { | |
1243 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1244 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1245 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1246 | struct sk_buff *skb; | |
1247 | struct ieee80211_mgmt *mgmt; | |
1248 | u16 capab; | |
1249 | ||
3acea5b6 | 1250 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
eadc8d9e RR |
1251 | |
1252 | if (!skb) { | |
1253 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1254 | "for addba request frame\n", dev->name); | |
1255 | return; | |
1256 | } | |
1257 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1258 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1259 | memset(mgmt, 0, 24); | |
1260 | memcpy(mgmt->da, da, ETH_ALEN); | |
1261 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1262 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
1263 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); | |
1264 | else | |
1265 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1266 | ||
1267 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1268 | IEEE80211_STYPE_ACTION); | |
1269 | ||
1270 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); | |
1271 | ||
1272 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1273 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; | |
1274 | ||
1275 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; | |
1276 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ | |
1277 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1278 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ | |
1279 | ||
1280 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); | |
1281 | ||
1282 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); | |
1283 | mgmt->u.action.u.addba_req.start_seq_num = | |
1284 | cpu_to_le16(start_seq_num << 4); | |
1285 | ||
1286 | ieee80211_sta_tx(dev, skb, 0); | |
1287 | } | |
1288 | ||
9f985b0e RR |
1289 | static void ieee80211_sta_process_addba_request(struct net_device *dev, |
1290 | struct ieee80211_mgmt *mgmt, | |
1291 | size_t len) | |
1292 | { | |
1293 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1294 | struct ieee80211_hw *hw = &local->hw; |
1295 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1296 | struct sta_info *sta; |
07db2183 RR |
1297 | struct tid_ampdu_rx *tid_agg_rx; |
1298 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1299 | u8 dialog_token; |
07db2183 RR |
1300 | int ret = -EOPNOTSUPP; |
1301 | DECLARE_MAC_BUF(mac); | |
9f985b0e | 1302 | |
d0709a65 JB |
1303 | rcu_read_lock(); |
1304 | ||
9f985b0e | 1305 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1306 | if (!sta) { |
1307 | rcu_read_unlock(); | |
9f985b0e | 1308 | return; |
d0709a65 | 1309 | } |
9f985b0e RR |
1310 | |
1311 | /* extract session parameters from addba request frame */ | |
1312 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1313 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1314 | start_seq_num = |
1315 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1316 | |
1317 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1318 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1319 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1320 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1321 | ||
9f985b0e RR |
1322 | status = WLAN_STATUS_REQUEST_DECLINED; |
1323 | ||
07db2183 RR |
1324 | /* sanity check for incoming parameters: |
1325 | * check if configuration can support the BA policy | |
1326 | * and if buffer size does not exceeds max value */ | |
1327 | if (((ba_policy != 1) | |
1328 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1329 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1330 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1331 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1332 | if (net_ratelimit()) | |
7b9d44cd | 1333 | printk(KERN_DEBUG "AddBA Req with bad params from " |
07db2183 RR |
1334 | "%s on tid %u. policy %d, buffer size %d\n", |
1335 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1336 | buf_size); | |
1337 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1338 | goto end_no_lock; | |
1339 | } | |
1340 | /* determine default buffer size */ | |
1341 | if (buf_size == 0) { | |
8318d78a JB |
1342 | struct ieee80211_supported_band *sband; |
1343 | ||
1344 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1345 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1346 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1347 | } |
1348 | ||
07db2183 RR |
1349 | |
1350 | /* examine state machine */ | |
07346f81 | 1351 | spin_lock_bh(&sta->lock); |
07db2183 | 1352 | |
cee24a3e | 1353 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
07db2183 RR |
1354 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1355 | if (net_ratelimit()) | |
7b9d44cd | 1356 | printk(KERN_DEBUG "unexpected AddBA Req from " |
07db2183 RR |
1357 | "%s on tid %u\n", |
1358 | print_mac(mac, mgmt->sa), tid); | |
1359 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1360 | goto end; | |
1361 | } | |
1362 | ||
cee24a3e RR |
1363 | /* prepare A-MPDU MLME for Rx aggregation */ |
1364 | sta->ampdu_mlme.tid_rx[tid] = | |
1365 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); | |
1366 | if (!sta->ampdu_mlme.tid_rx[tid]) { | |
1367 | if (net_ratelimit()) | |
1368 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", | |
1369 | tid); | |
1370 | goto end; | |
1371 | } | |
1372 | /* rx timer */ | |
1373 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = | |
1374 | sta_rx_agg_session_timer_expired; | |
1375 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = | |
1376 | (unsigned long)&sta->timer_to_tid[tid]; | |
1377 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); | |
1378 | ||
1379 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; | |
1380 | ||
07db2183 RR |
1381 | /* prepare reordering buffer */ |
1382 | tid_agg_rx->reorder_buf = | |
c97c23e3 | 1383 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
03147dfc JB |
1384 | if (!tid_agg_rx->reorder_buf) { |
1385 | if (net_ratelimit()) | |
1386 | printk(KERN_ERR "can not allocate reordering buffer " | |
1387 | "to tid %d\n", tid); | |
cee24a3e | 1388 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
07db2183 RR |
1389 | goto end; |
1390 | } | |
1391 | memset(tid_agg_rx->reorder_buf, 0, | |
c97c23e3 | 1392 | buf_size * sizeof(struct sk_buff *)); |
07db2183 RR |
1393 | |
1394 | if (local->ops->ampdu_action) | |
1395 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1396 | sta->addr, tid, &start_seq_num); |
07db2183 | 1397 | #ifdef CONFIG_MAC80211_HT_DEBUG |
513a1025 | 1398 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
07db2183 RR |
1399 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
1400 | ||
1401 | if (ret) { | |
1402 | kfree(tid_agg_rx->reorder_buf); | |
cee24a3e RR |
1403 | kfree(tid_agg_rx); |
1404 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
07db2183 RR |
1405 | goto end; |
1406 | } | |
1407 | ||
1408 | /* change state and send addba resp */ | |
cee24a3e | 1409 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
07db2183 RR |
1410 | tid_agg_rx->dialog_token = dialog_token; |
1411 | tid_agg_rx->ssn = start_seq_num; | |
1412 | tid_agg_rx->head_seq_num = start_seq_num; | |
1413 | tid_agg_rx->buf_size = buf_size; | |
1414 | tid_agg_rx->timeout = timeout; | |
1415 | tid_agg_rx->stored_mpdu_num = 0; | |
1416 | status = WLAN_STATUS_SUCCESS; | |
1417 | end: | |
07346f81 | 1418 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1419 | |
1420 | end_no_lock: | |
d0709a65 JB |
1421 | ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid, |
1422 | dialog_token, status, 1, buf_size, timeout); | |
1423 | rcu_read_unlock(); | |
9f985b0e | 1424 | } |
f0706e82 | 1425 | |
eadc8d9e RR |
1426 | static void ieee80211_sta_process_addba_resp(struct net_device *dev, |
1427 | struct ieee80211_mgmt *mgmt, | |
1428 | size_t len) | |
1429 | { | |
1430 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1431 | struct ieee80211_hw *hw = &local->hw; | |
1432 | struct sta_info *sta; | |
1433 | u16 capab; | |
1434 | u16 tid; | |
1435 | u8 *state; | |
1436 | ||
d0709a65 JB |
1437 | rcu_read_lock(); |
1438 | ||
eadc8d9e | 1439 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1440 | if (!sta) { |
1441 | rcu_read_unlock(); | |
eadc8d9e | 1442 | return; |
d0709a65 | 1443 | } |
eadc8d9e RR |
1444 | |
1445 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1446 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1447 | ||
cee24a3e | 1448 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1449 | |
07346f81 | 1450 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1451 | |
cee24a3e | 1452 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1453 | spin_unlock_bh(&sta->lock); |
cee24a3e RR |
1454 | printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:" |
1455 | "%d\n", *state); | |
1456 | goto addba_resp_exit; | |
1457 | } | |
1458 | ||
eadc8d9e | 1459 | if (mgmt->u.action.u.addba_resp.dialog_token != |
cee24a3e | 1460 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
07346f81 | 1461 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1462 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1463 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1464 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 1465 | goto addba_resp_exit; |
eadc8d9e RR |
1466 | } |
1467 | ||
cee24a3e | 1468 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e RR |
1469 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1470 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1471 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1472 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1473 | == WLAN_STATUS_SUCCESS) { | |
eadc8d9e RR |
1474 | if (*state & HT_ADDBA_RECEIVED_MSK) |
1475 | printk(KERN_DEBUG "double addBA response\n"); | |
1476 | ||
1477 | *state |= HT_ADDBA_RECEIVED_MSK; | |
cee24a3e | 1478 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
eadc8d9e RR |
1479 | |
1480 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
1481 | printk(KERN_DEBUG "Aggregation on for tid %d \n", tid); | |
1482 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
1483 | } | |
1484 | ||
07346f81 | 1485 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1486 | printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid); |
1487 | } else { | |
1488 | printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid); | |
1489 | ||
cee24a3e | 1490 | sta->ampdu_mlme.addba_req_num[tid]++; |
eadc8d9e RR |
1491 | /* this will allow the state check in stop_BA_session */ |
1492 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1493 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1494 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
1495 | WLAN_BACK_INITIATOR); | |
1496 | } | |
cee24a3e RR |
1497 | |
1498 | addba_resp_exit: | |
d0709a65 | 1499 | rcu_read_unlock(); |
eadc8d9e RR |
1500 | } |
1501 | ||
1502 | void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, | |
1503 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1504 | { |
1505 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1506 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1507 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1508 | struct sk_buff *skb; | |
1509 | struct ieee80211_mgmt *mgmt; | |
1510 | u16 params; | |
1511 | ||
3acea5b6 | 1512 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
07db2183 RR |
1513 | |
1514 | if (!skb) { | |
1515 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1516 | "for delba frame\n", dev->name); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1521 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1522 | memset(mgmt, 0, 24); | |
1523 | memcpy(mgmt->da, da, ETH_ALEN); | |
1524 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1525 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1526 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1527 | else | |
1528 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1529 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1530 | IEEE80211_STYPE_ACTION); | |
1531 | ||
1532 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1533 | ||
1534 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1535 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1536 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1537 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1538 | ||
1539 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1540 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1541 | ||
1542 | ieee80211_sta_tx(dev, skb, 0); | |
1543 | } | |
1544 | ||
1545 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, | |
1546 | u16 initiator, u16 reason) | |
1547 | { | |
1548 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1549 | struct ieee80211_hw *hw = &local->hw; | |
1550 | struct sta_info *sta; | |
b580781e | 1551 | int ret, i; |
513a1025 | 1552 | DECLARE_MAC_BUF(mac); |
07db2183 | 1553 | |
d0709a65 JB |
1554 | rcu_read_lock(); |
1555 | ||
07db2183 | 1556 | sta = sta_info_get(local, ra); |
d0709a65 JB |
1557 | if (!sta) { |
1558 | rcu_read_unlock(); | |
07db2183 | 1559 | return; |
d0709a65 | 1560 | } |
07db2183 RR |
1561 | |
1562 | /* check if TID is in operational state */ | |
07346f81 | 1563 | spin_lock_bh(&sta->lock); |
cee24a3e | 1564 | if (sta->ampdu_mlme.tid_state_rx[tid] |
07db2183 | 1565 | != HT_AGG_STATE_OPERATIONAL) { |
07346f81 | 1566 | spin_unlock_bh(&sta->lock); |
d0709a65 | 1567 | rcu_read_unlock(); |
07db2183 RR |
1568 | return; |
1569 | } | |
cee24a3e | 1570 | sta->ampdu_mlme.tid_state_rx[tid] = |
07db2183 RR |
1571 | HT_AGG_STATE_REQ_STOP_BA_MSK | |
1572 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
07346f81 | 1573 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1574 | |
1575 | /* stop HW Rx aggregation. ampdu_action existence | |
1576 | * already verified in session init so we add the BUG_ON */ | |
1577 | BUG_ON(!local->ops->ampdu_action); | |
1578 | ||
513a1025 RR |
1579 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1580 | printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", | |
1581 | print_mac(mac, ra), tid); | |
1582 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1583 | ||
07db2183 | 1584 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, |
0df3ef45 | 1585 | ra, tid, NULL); |
07db2183 RR |
1586 | if (ret) |
1587 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
1588 | "aggergation for tid %d\n", tid); | |
1589 | ||
1590 | /* shutdown timer has not expired */ | |
1591 | if (initiator != WLAN_BACK_TIMER) | |
cee24a3e | 1592 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
07db2183 RR |
1593 | |
1594 | /* check if this is a self generated aggregation halt */ | |
1595 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1596 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1597 | ||
1598 | /* free the reordering buffer */ | |
cee24a3e RR |
1599 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { |
1600 | if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { | |
b580781e | 1601 | /* release the reordered frames */ |
cee24a3e RR |
1602 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); |
1603 | sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; | |
1604 | sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; | |
b580781e RR |
1605 | } |
1606 | } | |
cee24a3e RR |
1607 | /* free resources */ |
1608 | kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); | |
1609 | kfree(sta->ampdu_mlme.tid_rx[tid]); | |
1610 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
1611 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; | |
07db2183 | 1612 | |
d0709a65 | 1613 | rcu_read_unlock(); |
07db2183 RR |
1614 | } |
1615 | ||
eadc8d9e | 1616 | |
688b88a4 RR |
1617 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1618 | struct ieee80211_mgmt *mgmt, size_t len) | |
1619 | { | |
1620 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1621 | struct sta_info *sta; | |
1622 | u16 tid, params; | |
1623 | u16 initiator; | |
1624 | DECLARE_MAC_BUF(mac); | |
1625 | ||
d0709a65 JB |
1626 | rcu_read_lock(); |
1627 | ||
688b88a4 | 1628 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1629 | if (!sta) { |
1630 | rcu_read_unlock(); | |
688b88a4 | 1631 | return; |
d0709a65 | 1632 | } |
688b88a4 RR |
1633 | |
1634 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1635 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1636 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1637 | ||
1638 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1639 | if (net_ratelimit()) | |
d92684e6 RR |
1640 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1641 | print_mac(mac, mgmt->sa), | |
2e354ed7 | 1642 | initiator ? "initiator" : "recipient", tid, |
688b88a4 RR |
1643 | mgmt->u.action.u.delba.reason_code); |
1644 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1645 | ||
1646 | if (initiator == WLAN_BACK_INITIATOR) | |
1647 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1648 | WLAN_BACK_INITIATOR, 0); | |
d92684e6 | 1649 | else { /* WLAN_BACK_RECIPIENT */ |
07346f81 | 1650 | spin_lock_bh(&sta->lock); |
cee24a3e | 1651 | sta->ampdu_mlme.tid_state_tx[tid] = |
d92684e6 | 1652 | HT_AGG_STATE_OPERATIONAL; |
07346f81 | 1653 | spin_unlock_bh(&sta->lock); |
d92684e6 RR |
1654 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
1655 | WLAN_BACK_RECIPIENT); | |
1656 | } | |
d0709a65 | 1657 | rcu_read_unlock(); |
688b88a4 RR |
1658 | } |
1659 | ||
eadc8d9e RR |
1660 | /* |
1661 | * After sending add Block Ack request we activated a timer until | |
1662 | * add Block Ack response will arrive from the recipient. | |
1663 | * If this timer expires sta_addba_resp_timer_expired will be executed. | |
1664 | */ | |
1665 | void sta_addba_resp_timer_expired(unsigned long data) | |
1666 | { | |
1667 | /* not an elegant detour, but there is no choice as the timer passes | |
1668 | * only one argument, and both sta_info and TID are needed, so init | |
73651ee6 | 1669 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
eadc8d9e | 1670 | * array gives the sta through container_of */ |
70d251b2 | 1671 | u16 tid = *(u8 *)data; |
eadc8d9e RR |
1672 | struct sta_info *temp_sta = container_of((void *)data, |
1673 | struct sta_info, timer_to_tid[tid]); | |
1674 | ||
1675 | struct ieee80211_local *local = temp_sta->local; | |
1676 | struct ieee80211_hw *hw = &local->hw; | |
1677 | struct sta_info *sta; | |
1678 | u8 *state; | |
1679 | ||
d0709a65 JB |
1680 | rcu_read_lock(); |
1681 | ||
eadc8d9e | 1682 | sta = sta_info_get(local, temp_sta->addr); |
d0709a65 JB |
1683 | if (!sta) { |
1684 | rcu_read_unlock(); | |
eadc8d9e | 1685 | return; |
d0709a65 | 1686 | } |
eadc8d9e | 1687 | |
cee24a3e | 1688 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1689 | /* check if the TID waits for addBA response */ |
07346f81 | 1690 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1691 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1692 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1693 | *state = HT_AGG_STATE_IDLE; |
1694 | printk(KERN_DEBUG "timer expired on tid %d but we are not " | |
1695 | "expecting addBA response there", tid); | |
1696 | goto timer_expired_exit; | |
1697 | } | |
1698 | ||
1699 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); | |
1700 | ||
1701 | /* go through the state check in stop_BA_session */ | |
1702 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1703 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1704 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, |
1705 | WLAN_BACK_INITIATOR); | |
1706 | ||
1707 | timer_expired_exit: | |
d0709a65 | 1708 | rcu_read_unlock(); |
eadc8d9e RR |
1709 | } |
1710 | ||
07db2183 | 1711 | /* |
7b9d44cd RR |
1712 | * After accepting the AddBA Request we activated a timer, |
1713 | * resetting it after each frame that arrives from the originator. | |
07db2183 RR |
1714 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. |
1715 | */ | |
712590de | 1716 | static void sta_rx_agg_session_timer_expired(unsigned long data) |
07db2183 RR |
1717 | { |
1718 | /* not an elegant detour, but there is no choice as the timer passes | |
70d251b2 | 1719 | * only one argument, and various sta_info are needed here, so init |
73651ee6 | 1720 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
07db2183 RR |
1721 | * array gives the sta through container_of */ |
1722 | u8 *ptid = (u8 *)data; | |
1723 | u8 *timer_to_id = ptid - *ptid; | |
1724 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1725 | timer_to_tid[0]); | |
1726 | ||
1727 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); | |
d0709a65 JB |
1728 | ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, |
1729 | (u16)*ptid, WLAN_BACK_TIMER, | |
07db2183 RR |
1730 | WLAN_REASON_QSTA_TIMEOUT); |
1731 | } | |
1732 | ||
85249e5f RR |
1733 | void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr) |
1734 | { | |
1735 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1736 | int i; | |
1737 | ||
1738 | for (i = 0; i < STA_TID_NUM; i++) { | |
1739 | ieee80211_stop_tx_ba_session(&local->hw, addr, i, | |
1740 | WLAN_BACK_INITIATOR); | |
1741 | ieee80211_sta_stop_rx_ba_session(dev, addr, i, | |
1742 | WLAN_BACK_RECIPIENT, | |
1743 | WLAN_REASON_QSTA_LEAVE_QBSS); | |
1744 | } | |
1745 | } | |
07db2183 | 1746 | |
b6623486 AK |
1747 | static void ieee80211_send_refuse_measurement_request(struct net_device *dev, |
1748 | struct ieee80211_msrment_ie *request_ie, | |
1749 | const u8 *da, const u8 *bssid, | |
1750 | u8 dialog_token) | |
1751 | { | |
1752 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1753 | struct sk_buff *skb; | |
1754 | struct ieee80211_mgmt *msr_report; | |
1755 | ||
1756 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | |
1757 | sizeof(struct ieee80211_msrment_ie)); | |
1758 | ||
1759 | if (!skb) { | |
1760 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
1761 | "measurement report frame\n", dev->name); | |
1762 | return; | |
1763 | } | |
1764 | ||
1765 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1766 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | |
1767 | memset(msr_report, 0, 24); | |
1768 | memcpy(msr_report->da, da, ETH_ALEN); | |
1769 | memcpy(msr_report->sa, dev->dev_addr, ETH_ALEN); | |
1770 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | |
1771 | msr_report->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1772 | IEEE80211_STYPE_ACTION); | |
1773 | ||
1774 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | |
1775 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
1776 | msr_report->u.action.u.measurement.action_code = | |
1777 | WLAN_ACTION_SPCT_MSR_RPRT; | |
1778 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | |
1779 | ||
1780 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | |
1781 | msr_report->u.action.u.measurement.length = | |
1782 | sizeof(struct ieee80211_msrment_ie); | |
1783 | ||
1784 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | |
1785 | sizeof(struct ieee80211_msrment_ie)); | |
1786 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | |
1787 | msr_report->u.action.u.measurement.msr_elem.mode |= | |
1788 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | |
1789 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | |
1790 | ||
1791 | ieee80211_sta_tx(dev, skb, 0); | |
1792 | } | |
1793 | ||
1794 | static void ieee80211_sta_process_measurement_req(struct net_device *dev, | |
1795 | struct ieee80211_mgmt *mgmt, | |
1796 | size_t len) | |
1797 | { | |
1798 | /* | |
1799 | * Ignoring measurement request is spec violation. | |
1800 | * Mandatory measurements must be reported optional | |
1801 | * measurements might be refused or reported incapable | |
1802 | * For now just refuse | |
1803 | * TODO: Answer basic measurement as unmeasured | |
1804 | */ | |
1805 | ieee80211_send_refuse_measurement_request(dev, | |
1806 | &mgmt->u.action.u.measurement.msr_elem, | |
1807 | mgmt->sa, mgmt->bssid, | |
1808 | mgmt->u.action.u.measurement.dialog_token); | |
1809 | } | |
1810 | ||
1811 | ||
f0706e82 JB |
1812 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1813 | struct ieee80211_if_sta *ifsta, | |
1814 | struct ieee80211_mgmt *mgmt, | |
1815 | size_t len) | |
1816 | { | |
1817 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1818 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1819 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1820 | |
1821 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
51fb61e7 | 1822 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 1823 | printk(KERN_DEBUG "%s: authentication frame received from " |
0795af57 JP |
1824 | "%s, but not in authenticate state - ignored\n", |
1825 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1826 | return; |
1827 | } | |
1828 | ||
1829 | if (len < 24 + 6) { | |
1830 | printk(KERN_DEBUG "%s: too short (%zd) authentication frame " | |
0795af57 JP |
1831 | "received from %s - ignored\n", |
1832 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1833 | return; |
1834 | } | |
1835 | ||
51fb61e7 | 1836 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1837 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { |
1838 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1839 | "unknown AP (SA=%s BSSID=%s) - " |
1840 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1841 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1842 | return; |
1843 | } | |
1844 | ||
51fb61e7 | 1845 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1846 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) { |
1847 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1848 | "unknown BSSID (SA=%s BSSID=%s) - " |
1849 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1850 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1851 | return; |
1852 | } | |
1853 | ||
1854 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1855 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1856 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1857 | ||
0795af57 | 1858 | printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d " |
f0706e82 | 1859 | "transaction=%d status=%d)\n", |
0795af57 | 1860 | dev->name, print_mac(mac, mgmt->sa), auth_alg, |
f0706e82 JB |
1861 | auth_transaction, status_code); |
1862 | ||
51fb61e7 | 1863 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
1864 | /* |
1865 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
1866 | * networks and most implementations do not seem to use it. |
1867 | * However, try to reply to authentication attempts if someone | |
1868 | * has actually implemented this. | |
135a2110 | 1869 | */ |
f0706e82 JB |
1870 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) { |
1871 | printk(KERN_DEBUG "%s: unexpected IBSS authentication " | |
1872 | "frame (alg=%d transaction=%d)\n", | |
1873 | dev->name, auth_alg, auth_transaction); | |
1874 | return; | |
1875 | } | |
1876 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); | |
1877 | } | |
1878 | ||
1879 | if (auth_alg != ifsta->auth_alg || | |
1880 | auth_transaction != ifsta->auth_transaction) { | |
1881 | printk(KERN_DEBUG "%s: unexpected authentication frame " | |
1882 | "(alg=%d transaction=%d)\n", | |
1883 | dev->name, auth_alg, auth_transaction); | |
1884 | return; | |
1885 | } | |
1886 | ||
1887 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1888 | printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d " | |
1889 | "code=%d)\n", dev->name, ifsta->auth_alg, status_code); | |
1890 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { | |
1891 | u8 algs[3]; | |
1892 | const int num_algs = ARRAY_SIZE(algs); | |
1893 | int i, pos; | |
1894 | algs[0] = algs[1] = algs[2] = 0xff; | |
1895 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1896 | algs[0] = WLAN_AUTH_OPEN; | |
1897 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1898 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1899 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1900 | algs[2] = WLAN_AUTH_LEAP; | |
1901 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1902 | pos = 0; | |
1903 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1904 | pos = 1; | |
1905 | else | |
1906 | pos = 2; | |
1907 | for (i = 0; i < num_algs; i++) { | |
1908 | pos++; | |
1909 | if (pos >= num_algs) | |
1910 | pos = 0; | |
1911 | if (algs[pos] == ifsta->auth_alg || | |
1912 | algs[pos] == 0xff) | |
1913 | continue; | |
1914 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1915 | !ieee80211_sta_wep_configured(dev)) | |
1916 | continue; | |
1917 | ifsta->auth_alg = algs[pos]; | |
1918 | printk(KERN_DEBUG "%s: set auth_alg=%d for " | |
1919 | "next try\n", | |
1920 | dev->name, ifsta->auth_alg); | |
1921 | break; | |
1922 | } | |
1923 | } | |
1924 | return; | |
1925 | } | |
1926 | ||
1927 | switch (ifsta->auth_alg) { | |
1928 | case WLAN_AUTH_OPEN: | |
1929 | case WLAN_AUTH_LEAP: | |
1930 | ieee80211_auth_completed(dev, ifsta); | |
1931 | break; | |
1932 | case WLAN_AUTH_SHARED_KEY: | |
1933 | if (ifsta->auth_transaction == 4) | |
1934 | ieee80211_auth_completed(dev, ifsta); | |
1935 | else | |
1936 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1937 | break; | |
1938 | } | |
1939 | } | |
1940 | ||
1941 | ||
1942 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1943 | struct ieee80211_if_sta *ifsta, | |
1944 | struct ieee80211_mgmt *mgmt, | |
1945 | size_t len) | |
1946 | { | |
1947 | u16 reason_code; | |
0795af57 | 1948 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1949 | |
1950 | if (len < 24 + 2) { | |
1951 | printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame " | |
0795af57 JP |
1952 | "received from %s - ignored\n", |
1953 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1954 | return; |
1955 | } | |
1956 | ||
1957 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1958 | printk(KERN_DEBUG "%s: deauthentication frame received from " | |
0795af57 JP |
1959 | "unknown AP (SA=%s BSSID=%s) - " |
1960 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1961 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1962 | return; |
1963 | } | |
1964 | ||
1965 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1966 | ||
0795af57 | 1967 | printk(KERN_DEBUG "%s: RX deauthentication from %s" |
f0706e82 | 1968 | " (reason=%d)\n", |
0795af57 | 1969 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1970 | |
988c0f72 | 1971 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f0706e82 | 1972 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
f0706e82 JB |
1973 | |
1974 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1975 | ifsta->state == IEEE80211_ASSOCIATE || | |
1976 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1977 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1978 | mod_timer(&ifsta->timer, jiffies + | |
1979 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1980 | } | |
1981 | ||
1982 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1983 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1984 | } |
1985 | ||
1986 | ||
1987 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1988 | struct ieee80211_if_sta *ifsta, | |
1989 | struct ieee80211_mgmt *mgmt, | |
1990 | size_t len) | |
1991 | { | |
1992 | u16 reason_code; | |
0795af57 | 1993 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1994 | |
1995 | if (len < 24 + 2) { | |
1996 | printk(KERN_DEBUG "%s: too short (%zd) disassociation frame " | |
0795af57 JP |
1997 | "received from %s - ignored\n", |
1998 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1999 | return; |
2000 | } | |
2001 | ||
2002 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
2003 | printk(KERN_DEBUG "%s: disassociation frame received from " | |
0795af57 JP |
2004 | "unknown AP (SA=%s BSSID=%s) - " |
2005 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
2006 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
2007 | return; |
2008 | } | |
2009 | ||
2010 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2011 | ||
0795af57 | 2012 | printk(KERN_DEBUG "%s: RX disassociation from %s" |
f0706e82 | 2013 | " (reason=%d)\n", |
0795af57 | 2014 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 2015 | |
d6f2da5b | 2016 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
2017 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
2018 | ||
2019 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
2020 | ifsta->state = IEEE80211_ASSOCIATE; | |
2021 | mod_timer(&ifsta->timer, jiffies + | |
2022 | IEEE80211_RETRY_AUTH_INTERVAL); | |
2023 | } | |
2024 | ||
2025 | ieee80211_set_disassoc(dev, ifsta, 0); | |
2026 | } | |
2027 | ||
2028 | ||
471b3efd | 2029 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2030 | struct ieee80211_if_sta *ifsta, |
2031 | struct ieee80211_mgmt *mgmt, | |
2032 | size_t len, | |
2033 | int reassoc) | |
2034 | { | |
471b3efd JB |
2035 | struct ieee80211_local *local = sdata->local; |
2036 | struct net_device *dev = sdata->dev; | |
8318d78a | 2037 | struct ieee80211_supported_band *sband; |
f0706e82 | 2038 | struct sta_info *sta; |
8318d78a | 2039 | u64 rates, basic_rates; |
f0706e82 JB |
2040 | u16 capab_info, status_code, aid; |
2041 | struct ieee802_11_elems elems; | |
471b3efd | 2042 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
2043 | u8 *pos; |
2044 | int i, j; | |
0795af57 | 2045 | DECLARE_MAC_BUF(mac); |
8318d78a | 2046 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
2047 | |
2048 | /* AssocResp and ReassocResp have identical structure, so process both | |
2049 | * of them in this function. */ | |
2050 | ||
2051 | if (ifsta->state != IEEE80211_ASSOCIATE) { | |
2052 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
2053 | "%s, but not in associate state - ignored\n", |
2054 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
2055 | return; |
2056 | } | |
2057 | ||
2058 | if (len < 24 + 6) { | |
2059 | printk(KERN_DEBUG "%s: too short (%zd) association frame " | |
0795af57 JP |
2060 | "received from %s - ignored\n", |
2061 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
2062 | return; |
2063 | } | |
2064 | ||
2065 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
2066 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
2067 | "unknown AP (SA=%s BSSID=%s) - " |
2068 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
2069 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
2070 | return; |
2071 | } | |
2072 | ||
2073 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2074 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2075 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 2076 | |
0795af57 | 2077 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 2078 | "status=%d aid=%d)\n", |
0795af57 | 2079 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 2080 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
2081 | |
2082 | if (status_code != WLAN_STATUS_SUCCESS) { | |
2083 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
2084 | dev->name, status_code); | |
8a69aa93 DD |
2085 | /* if this was a reassociation, ensure we try a "full" |
2086 | * association next time. This works around some broken APs | |
2087 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 2088 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
2089 | return; |
2090 | } | |
2091 | ||
1dd84aa2 JB |
2092 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
2093 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
2094 | "set\n", dev->name, aid); | |
2095 | aid &= ~(BIT(15) | BIT(14)); | |
2096 | ||
f0706e82 | 2097 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 2098 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
2099 | |
2100 | if (!elems.supp_rates) { | |
2101 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
2102 | dev->name); | |
2103 | return; | |
2104 | } | |
2105 | ||
2106 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
2107 | ifsta->aid = aid; | |
2108 | ifsta->ap_capab = capab_info; | |
2109 | ||
2110 | kfree(ifsta->assocresp_ies); | |
2111 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 2112 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
2113 | if (ifsta->assocresp_ies) |
2114 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
2115 | ||
d0709a65 JB |
2116 | rcu_read_lock(); |
2117 | ||
f0706e82 JB |
2118 | /* Add STA entry for the AP */ |
2119 | sta = sta_info_get(local, ifsta->bssid); | |
2120 | if (!sta) { | |
2121 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 2122 | int err; |
d0709a65 | 2123 | |
73651ee6 JB |
2124 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
2125 | if (!sta) { | |
2126 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
2127 | " the AP\n", dev->name); | |
d0709a65 | 2128 | rcu_read_unlock(); |
f0706e82 JB |
2129 | return; |
2130 | } | |
65c107ab | 2131 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 2132 | local->hw.conf.channel->center_freq, |
cffdd30d | 2133 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 | 2134 | if (bss) { |
f0706e82 | 2135 | sta->last_signal = bss->signal; |
566bfe5a | 2136 | sta->last_qual = bss->qual; |
f0706e82 JB |
2137 | sta->last_noise = bss->noise; |
2138 | ieee80211_rx_bss_put(dev, bss); | |
2139 | } | |
73651ee6 JB |
2140 | |
2141 | err = sta_info_insert(sta); | |
2142 | if (err) { | |
2143 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
2144 | " the AP (error %d)\n", dev->name, err); | |
73651ee6 JB |
2145 | rcu_read_unlock(); |
2146 | return; | |
2147 | } | |
f0706e82 JB |
2148 | } |
2149 | ||
73651ee6 JB |
2150 | /* |
2151 | * FIXME: Do we really need to update the sta_info's information here? | |
2152 | * We already know about the AP (we found it in our list) so it | |
2153 | * should already be filled with the right info, no? | |
2154 | * As is stands, all this is racy because typically we assume | |
2155 | * the information that is filled in here (except flags) doesn't | |
2156 | * change while a STA structure is alive. As such, it should move | |
2157 | * to between the sta_info_alloc() and sta_info_insert() above. | |
2158 | */ | |
2159 | ||
07346f81 JB |
2160 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
2161 | WLAN_STA_AUTHORIZED); | |
f0706e82 JB |
2162 | |
2163 | rates = 0; | |
8318d78a JB |
2164 | basic_rates = 0; |
2165 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2166 | ||
f0706e82 JB |
2167 | for (i = 0; i < elems.supp_rates_len; i++) { |
2168 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2169 | |
2170 | if (rate > 110) | |
2171 | have_higher_than_11mbit = true; | |
2172 | ||
2173 | for (j = 0; j < sband->n_bitrates; j++) { | |
2174 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2175 | rates |= BIT(j); |
8318d78a JB |
2176 | if (elems.supp_rates[i] & 0x80) |
2177 | basic_rates |= BIT(j); | |
2178 | } | |
f0706e82 | 2179 | } |
8318d78a | 2180 | |
f0706e82 JB |
2181 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
2182 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2183 | |
2184 | if (rate > 110) | |
2185 | have_higher_than_11mbit = true; | |
2186 | ||
2187 | for (j = 0; j < sband->n_bitrates; j++) { | |
2188 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2189 | rates |= BIT(j); |
8318d78a JB |
2190 | if (elems.ext_supp_rates[i] & 0x80) |
2191 | basic_rates |= BIT(j); | |
2192 | } | |
f0706e82 | 2193 | } |
8318d78a JB |
2194 | |
2195 | sta->supp_rates[local->hw.conf.channel->band] = rates; | |
2196 | sdata->basic_rates = basic_rates; | |
2197 | ||
2198 | /* cf. IEEE 802.11 9.2.12 */ | |
2199 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
2200 | have_higher_than_11mbit) | |
2201 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
2202 | else | |
2203 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 2204 | |
3434fbd3 JB |
2205 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
2206 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
d3c990fb | 2207 | struct ieee80211_ht_bss_info bss_info; |
d3c990fb RR |
2208 | ieee80211_ht_cap_ie_to_ht_info( |
2209 | (struct ieee80211_ht_cap *) | |
2210 | elems.ht_cap_elem, &sta->ht_info); | |
2211 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2212 | (struct ieee80211_ht_addt_info *) | |
2213 | elems.ht_info_elem, &bss_info); | |
38668c05 | 2214 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); |
d3c990fb RR |
2215 | } |
2216 | ||
f0706e82 JB |
2217 | rate_control_rate_init(sta, local); |
2218 | ||
3434fbd3 | 2219 | if (elems.wmm_param) { |
07346f81 | 2220 | set_sta_flags(sta, WLAN_STA_WME); |
e5f98f2d | 2221 | rcu_read_unlock(); |
f0706e82 JB |
2222 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2223 | elems.wmm_param_len); | |
e5f98f2d JB |
2224 | } else |
2225 | rcu_read_unlock(); | |
f0706e82 | 2226 | |
21c0cbe7 TW |
2227 | /* set AID and assoc capability, |
2228 | * ieee80211_set_associated() will tell the driver */ | |
8318d78a | 2229 | bss_conf->aid = aid; |
21c0cbe7 | 2230 | bss_conf->assoc_capability = capab_info; |
8318d78a | 2231 | ieee80211_set_associated(dev, ifsta, 1); |
f0706e82 | 2232 | |
f0706e82 JB |
2233 | ieee80211_associated(dev, ifsta); |
2234 | } | |
2235 | ||
2236 | ||
2237 | /* Caller must hold local->sta_bss_lock */ | |
2238 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
2239 | struct ieee80211_sta_bss *bss) | |
2240 | { | |
2241 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f709fc69 | 2242 | u8 hash_idx; |
902acc78 JB |
2243 | |
2244 | if (bss_mesh_cfg(bss)) | |
2245 | hash_idx = mesh_id_hash(bss_mesh_id(bss), | |
2246 | bss_mesh_id_len(bss)); | |
f709fc69 | 2247 | else |
f709fc69 | 2248 | hash_idx = STA_HASH(bss->bssid); |
902acc78 | 2249 | |
f709fc69 LCC |
2250 | bss->hnext = local->sta_bss_hash[hash_idx]; |
2251 | local->sta_bss_hash[hash_idx] = bss; | |
f0706e82 JB |
2252 | } |
2253 | ||
2254 | ||
2255 | /* Caller must hold local->sta_bss_lock */ | |
2256 | static void __ieee80211_rx_bss_hash_del(struct net_device *dev, | |
2257 | struct ieee80211_sta_bss *bss) | |
2258 | { | |
2259 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2260 | struct ieee80211_sta_bss *b, *prev = NULL; | |
2261 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
2262 | while (b) { | |
2263 | if (b == bss) { | |
2264 | if (!prev) | |
2265 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
2266 | bss->hnext; | |
2267 | else | |
2268 | prev->hnext = bss->hnext; | |
2269 | break; | |
2270 | } | |
2271 | prev = b; | |
2272 | b = b->hnext; | |
2273 | } | |
2274 | } | |
2275 | ||
2276 | ||
2277 | static struct ieee80211_sta_bss * | |
8318d78a | 2278 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2279 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2280 | { |
2281 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2282 | struct ieee80211_sta_bss *bss; | |
2283 | ||
dd00cc48 | 2284 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
2285 | if (!bss) |
2286 | return NULL; | |
f0706e82 JB |
2287 | atomic_inc(&bss->users); |
2288 | atomic_inc(&bss->users); | |
2289 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
8318d78a | 2290 | bss->freq = freq; |
cffdd30d JL |
2291 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
2292 | memcpy(bss->ssid, ssid, ssid_len); | |
2293 | bss->ssid_len = ssid_len; | |
2294 | } | |
f0706e82 JB |
2295 | |
2296 | spin_lock_bh(&local->sta_bss_lock); | |
2297 | /* TODO: order by RSSI? */ | |
2298 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2299 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2300 | spin_unlock_bh(&local->sta_bss_lock); | |
2301 | return bss; | |
2302 | } | |
2303 | ||
f0706e82 | 2304 | static struct ieee80211_sta_bss * |
8318d78a | 2305 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2306 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2307 | { |
2308 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2309 | struct ieee80211_sta_bss *bss; | |
2310 | ||
2311 | spin_lock_bh(&local->sta_bss_lock); | |
2312 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
2313 | while (bss) { | |
902acc78 JB |
2314 | if (!bss_mesh_cfg(bss) && |
2315 | !memcmp(bss->bssid, bssid, ETH_ALEN) && | |
8318d78a | 2316 | bss->freq == freq && |
cffdd30d JL |
2317 | bss->ssid_len == ssid_len && |
2318 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
2319 | atomic_inc(&bss->users); |
2320 | break; | |
2321 | } | |
2322 | bss = bss->hnext; | |
2323 | } | |
2324 | spin_unlock_bh(&local->sta_bss_lock); | |
2325 | return bss; | |
2326 | } | |
2327 | ||
f709fc69 LCC |
2328 | #ifdef CONFIG_MAC80211_MESH |
2329 | static struct ieee80211_sta_bss * | |
2330 | ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
2331 | u8 *mesh_cfg, int freq) | |
2332 | { | |
2333 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2334 | struct ieee80211_sta_bss *bss; | |
2335 | ||
2336 | spin_lock_bh(&local->sta_bss_lock); | |
2337 | bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; | |
2338 | while (bss) { | |
902acc78 JB |
2339 | if (bss_mesh_cfg(bss) && |
2340 | !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && | |
f709fc69 LCC |
2341 | bss->freq == freq && |
2342 | mesh_id_len == bss->mesh_id_len && | |
2343 | (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, | |
2344 | mesh_id_len))) { | |
2345 | atomic_inc(&bss->users); | |
2346 | break; | |
2347 | } | |
2348 | bss = bss->hnext; | |
2349 | } | |
2350 | spin_unlock_bh(&local->sta_bss_lock); | |
2351 | return bss; | |
2352 | } | |
2353 | ||
2354 | static struct ieee80211_sta_bss * | |
2355 | ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
05e5e883 | 2356 | u8 *mesh_cfg, int mesh_config_len, int freq) |
f709fc69 LCC |
2357 | { |
2358 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2359 | struct ieee80211_sta_bss *bss; | |
2360 | ||
05e5e883 LCC |
2361 | if (mesh_config_len != MESH_CFG_LEN) |
2362 | return NULL; | |
2363 | ||
f709fc69 LCC |
2364 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
2365 | if (!bss) | |
2366 | return NULL; | |
2367 | ||
24736701 | 2368 | bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); |
f709fc69 LCC |
2369 | if (!bss->mesh_cfg) { |
2370 | kfree(bss); | |
2371 | return NULL; | |
2372 | } | |
2373 | ||
2374 | if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { | |
2375 | bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); | |
2376 | if (!bss->mesh_id) { | |
2377 | kfree(bss->mesh_cfg); | |
2378 | kfree(bss); | |
2379 | return NULL; | |
2380 | } | |
2381 | memcpy(bss->mesh_id, mesh_id, mesh_id_len); | |
2382 | } | |
2383 | ||
2384 | atomic_inc(&bss->users); | |
2385 | atomic_inc(&bss->users); | |
24736701 | 2386 | memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); |
f709fc69 LCC |
2387 | bss->mesh_id_len = mesh_id_len; |
2388 | bss->freq = freq; | |
2389 | spin_lock_bh(&local->sta_bss_lock); | |
2390 | /* TODO: order by RSSI? */ | |
2391 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2392 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2393 | spin_unlock_bh(&local->sta_bss_lock); | |
2394 | return bss; | |
2395 | } | |
2396 | #endif | |
f0706e82 JB |
2397 | |
2398 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
2399 | { | |
2400 | kfree(bss->wpa_ie); | |
2401 | kfree(bss->rsn_ie); | |
2402 | kfree(bss->wmm_ie); | |
c7153508 | 2403 | kfree(bss->ht_ie); |
9306102e | 2404 | kfree(bss->ht_add_ie); |
902acc78 JB |
2405 | kfree(bss_mesh_id(bss)); |
2406 | kfree(bss_mesh_cfg(bss)); | |
f0706e82 JB |
2407 | kfree(bss); |
2408 | } | |
2409 | ||
2410 | ||
2411 | static void ieee80211_rx_bss_put(struct net_device *dev, | |
2412 | struct ieee80211_sta_bss *bss) | |
2413 | { | |
2414 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1ebebea8 PE |
2415 | |
2416 | local_bh_disable(); | |
2417 | if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) { | |
2418 | local_bh_enable(); | |
f0706e82 | 2419 | return; |
1ebebea8 | 2420 | } |
f0706e82 | 2421 | |
f0706e82 JB |
2422 | __ieee80211_rx_bss_hash_del(dev, bss); |
2423 | list_del(&bss->list); | |
2424 | spin_unlock_bh(&local->sta_bss_lock); | |
2425 | ieee80211_rx_bss_free(bss); | |
2426 | } | |
2427 | ||
2428 | ||
2429 | void ieee80211_rx_bss_list_init(struct net_device *dev) | |
2430 | { | |
2431 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2432 | spin_lock_init(&local->sta_bss_lock); | |
2433 | INIT_LIST_HEAD(&local->sta_bss_list); | |
2434 | } | |
2435 | ||
2436 | ||
2437 | void ieee80211_rx_bss_list_deinit(struct net_device *dev) | |
2438 | { | |
2439 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2440 | struct ieee80211_sta_bss *bss, *tmp; | |
2441 | ||
2442 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
2443 | ieee80211_rx_bss_put(dev, bss); | |
2444 | } | |
2445 | ||
2446 | ||
a607268a BR |
2447 | static int ieee80211_sta_join_ibss(struct net_device *dev, |
2448 | struct ieee80211_if_sta *ifsta, | |
2449 | struct ieee80211_sta_bss *bss) | |
2450 | { | |
2451 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2452 | int res, rates, i, j; | |
2453 | struct sk_buff *skb; | |
2454 | struct ieee80211_mgmt *mgmt; | |
e039fa4a | 2455 | struct ieee80211_tx_info *control; |
a607268a BR |
2456 | struct rate_selection ratesel; |
2457 | u8 *pos; | |
2458 | struct ieee80211_sub_if_data *sdata; | |
2459 | struct ieee80211_supported_band *sband; | |
507b06d0 | 2460 | union iwreq_data wrqu; |
a607268a BR |
2461 | |
2462 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2463 | ||
9dd6aed0 JB |
2464 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
2465 | ||
a607268a | 2466 | /* Remove possible STA entries from other IBSS networks. */ |
dc6676b7 | 2467 | sta_info_flush_delayed(sdata); |
a607268a BR |
2468 | |
2469 | if (local->ops->reset_tsf) { | |
2470 | /* Reset own TSF to allow time synchronization work. */ | |
2471 | local->ops->reset_tsf(local_to_hw(local)); | |
2472 | } | |
2473 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
2474 | res = ieee80211_if_config(dev); | |
2475 | if (res) | |
2476 | return res; | |
2477 | ||
2478 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2479 | ||
a607268a BR |
2480 | sdata->drop_unencrypted = bss->capability & |
2481 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2482 | ||
be038b37 | 2483 | res = ieee80211_set_freq(dev, bss->freq); |
a607268a | 2484 | |
be038b37 AK |
2485 | if (res) |
2486 | return res; | |
a607268a BR |
2487 | |
2488 | /* Set beacon template */ | |
2489 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); | |
2490 | do { | |
2491 | if (!skb) | |
2492 | break; | |
2493 | ||
2494 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2495 | ||
2496 | mgmt = (struct ieee80211_mgmt *) | |
2497 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2498 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2499 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2500 | IEEE80211_STYPE_BEACON); | |
2501 | memset(mgmt->da, 0xff, ETH_ALEN); | |
2502 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2503 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2504 | mgmt->u.beacon.beacon_int = | |
2505 | cpu_to_le16(local->hw.conf.beacon_int); | |
2506 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); | |
2507 | ||
2508 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2509 | *pos++ = WLAN_EID_SSID; | |
2510 | *pos++ = ifsta->ssid_len; | |
2511 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2512 | ||
2513 | rates = bss->supp_rates_len; | |
2514 | if (rates > 8) | |
2515 | rates = 8; | |
2516 | pos = skb_put(skb, 2 + rates); | |
2517 | *pos++ = WLAN_EID_SUPP_RATES; | |
2518 | *pos++ = rates; | |
2519 | memcpy(pos, bss->supp_rates, rates); | |
2520 | ||
2521 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
2522 | pos = skb_put(skb, 2 + 1); | |
2523 | *pos++ = WLAN_EID_DS_PARAMS; | |
2524 | *pos++ = 1; | |
2525 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
2526 | } | |
2527 | ||
2528 | pos = skb_put(skb, 2 + 2); | |
2529 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2530 | *pos++ = 2; | |
2531 | /* FIX: set ATIM window based on scan results */ | |
2532 | *pos++ = 0; | |
2533 | *pos++ = 0; | |
2534 | ||
2535 | if (bss->supp_rates_len > 8) { | |
2536 | rates = bss->supp_rates_len - 8; | |
2537 | pos = skb_put(skb, 2 + rates); | |
2538 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2539 | *pos++ = rates; | |
2540 | memcpy(pos, &bss->supp_rates[8], rates); | |
2541 | } | |
2542 | ||
e039fa4a JB |
2543 | control = IEEE80211_SKB_CB(skb); |
2544 | ||
a607268a | 2545 | rate_control_get_rate(dev, sband, skb, &ratesel); |
2e92e6f2 | 2546 | if (ratesel.rate_idx < 0) { |
a607268a BR |
2547 | printk(KERN_DEBUG "%s: Failed to determine TX rate " |
2548 | "for IBSS beacon\n", dev->name); | |
2549 | break; | |
2550 | } | |
e039fa4a JB |
2551 | control->control.vif = &sdata->vif; |
2552 | control->tx_rate_idx = ratesel.rate_idx; | |
a607268a | 2553 | if (sdata->bss_conf.use_short_preamble && |
2e92e6f2 | 2554 | sband->bitrates[ratesel.rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE) |
e039fa4a JB |
2555 | control->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE; |
2556 | control->antenna_sel_tx = local->hw.conf.antenna_sel_tx; | |
2557 | control->flags |= IEEE80211_TX_CTL_NO_ACK; | |
2558 | control->control.retry_limit = 1; | |
a607268a BR |
2559 | |
2560 | ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); | |
2561 | if (ifsta->probe_resp) { | |
2562 | mgmt = (struct ieee80211_mgmt *) | |
2563 | ifsta->probe_resp->data; | |
2564 | mgmt->frame_control = | |
2565 | IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2566 | IEEE80211_STYPE_PROBE_RESP); | |
2567 | } else { | |
2568 | printk(KERN_DEBUG "%s: Could not allocate ProbeResp " | |
2569 | "template for IBSS\n", dev->name); | |
2570 | } | |
2571 | ||
2572 | if (local->ops->beacon_update && | |
e039fa4a | 2573 | local->ops->beacon_update(local_to_hw(local), skb) == 0) { |
a607268a BR |
2574 | printk(KERN_DEBUG "%s: Configured IBSS beacon " |
2575 | "template\n", dev->name); | |
2576 | skb = NULL; | |
2577 | } | |
2578 | ||
2579 | rates = 0; | |
2580 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2581 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2582 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
2583 | for (j = 0; j < sband->n_bitrates; j++) | |
2584 | if (sband->bitrates[j].bitrate == bitrate) | |
2585 | rates |= BIT(j); | |
2586 | } | |
2587 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; | |
e2839d8f VK |
2588 | |
2589 | ieee80211_sta_def_wmm_params(dev, bss, 1); | |
a607268a BR |
2590 | } while (0); |
2591 | ||
2592 | if (skb) { | |
2593 | printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " | |
2594 | "template\n", dev->name); | |
2595 | dev_kfree_skb(skb); | |
2596 | } | |
2597 | ||
2598 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2599 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2600 | ||
507b06d0 DW |
2601 | memset(&wrqu, 0, sizeof(wrqu)); |
2602 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
2603 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
a607268a BR |
2604 | |
2605 | return res; | |
2606 | } | |
2607 | ||
f709fc69 LCC |
2608 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
2609 | struct ieee802_11_elems *elems, | |
2610 | enum ieee80211_band band) | |
2611 | { | |
2612 | struct ieee80211_supported_band *sband; | |
2613 | struct ieee80211_rate *bitrates; | |
2614 | size_t num_rates; | |
2615 | u64 supp_rates; | |
2616 | int i, j; | |
2617 | sband = local->hw.wiphy->bands[band]; | |
2618 | ||
2619 | if (!sband) { | |
2620 | WARN_ON(1); | |
2621 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2622 | } | |
2623 | ||
2624 | bitrates = sband->bitrates; | |
2625 | num_rates = sband->n_bitrates; | |
2626 | supp_rates = 0; | |
2627 | for (i = 0; i < elems->supp_rates_len + | |
2628 | elems->ext_supp_rates_len; i++) { | |
2629 | u8 rate = 0; | |
2630 | int own_rate; | |
2631 | if (i < elems->supp_rates_len) | |
2632 | rate = elems->supp_rates[i]; | |
2633 | else if (elems->ext_supp_rates) | |
2634 | rate = elems->ext_supp_rates | |
2635 | [i - elems->supp_rates_len]; | |
2636 | own_rate = 5 * (rate & 0x7f); | |
2637 | for (j = 0; j < num_rates; j++) | |
2638 | if (bitrates[j].bitrate == own_rate) | |
2639 | supp_rates |= BIT(j); | |
2640 | } | |
2641 | return supp_rates; | |
2642 | } | |
2643 | ||
a607268a | 2644 | |
f0706e82 JB |
2645 | static void ieee80211_rx_bss_info(struct net_device *dev, |
2646 | struct ieee80211_mgmt *mgmt, | |
2647 | size_t len, | |
2648 | struct ieee80211_rx_status *rx_status, | |
2649 | int beacon) | |
2650 | { | |
2651 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2652 | struct ieee802_11_elems elems; | |
2653 | size_t baselen; | |
8318d78a | 2654 | int freq, clen; |
f0706e82 JB |
2655 | struct ieee80211_sta_bss *bss; |
2656 | struct sta_info *sta; | |
2657 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
9d9bf77d | 2658 | u64 beacon_timestamp, rx_timestamp; |
fab7d4a2 | 2659 | struct ieee80211_channel *channel; |
0795af57 JP |
2660 | DECLARE_MAC_BUF(mac); |
2661 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2662 | |
2663 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
2664 | return; /* ignore ProbeResp to foreign address */ | |
2665 | ||
2666 | #if 0 | |
0795af57 | 2667 | printk(KERN_DEBUG "%s: RX %s from %s to %s\n", |
f0706e82 | 2668 | dev->name, beacon ? "Beacon" : "Probe Response", |
0795af57 | 2669 | print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da)); |
f0706e82 JB |
2670 | #endif |
2671 | ||
2672 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2673 | if (baselen > len) | |
2674 | return; | |
2675 | ||
9d9bf77d | 2676 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
67a4cce4 | 2677 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2678 | |
902acc78 JB |
2679 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id && |
2680 | elems.mesh_config && mesh_matches_local(&elems, dev)) { | |
2681 | u64 rates = ieee80211_sta_get_rates(local, &elems, | |
2682 | rx_status->band); | |
2683 | ||
2684 | mesh_neighbour_update(mgmt->sa, rates, dev, | |
2685 | mesh_peer_accepts_plinks(&elems, dev)); | |
2686 | } | |
f709fc69 | 2687 | |
d0709a65 JB |
2688 | rcu_read_lock(); |
2689 | ||
51fb61e7 | 2690 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && |
f0706e82 JB |
2691 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
2692 | (sta = sta_info_get(local, mgmt->sa))) { | |
f709fc69 LCC |
2693 | u64 prev_rates; |
2694 | u64 supp_rates = ieee80211_sta_get_rates(local, &elems, | |
2695 | rx_status->band); | |
f0706e82 | 2696 | |
8318d78a JB |
2697 | prev_rates = sta->supp_rates[rx_status->band]; |
2698 | sta->supp_rates[rx_status->band] &= supp_rates; | |
2699 | if (sta->supp_rates[rx_status->band] == 0) { | |
f0706e82 JB |
2700 | /* No matching rates - this should not really happen. |
2701 | * Make sure that at least one rate is marked | |
2702 | * supported to avoid issues with TX rate ctrl. */ | |
8318d78a JB |
2703 | sta->supp_rates[rx_status->band] = |
2704 | sdata->u.sta.supp_rates_bits[rx_status->band]; | |
f0706e82 | 2705 | } |
8318d78a | 2706 | if (sta->supp_rates[rx_status->band] != prev_rates) { |
f0706e82 | 2707 | printk(KERN_DEBUG "%s: updated supp_rates set for " |
8318d78a JB |
2708 | "%s based on beacon info (0x%llx & 0x%llx -> " |
2709 | "0x%llx)\n", | |
2710 | dev->name, print_mac(mac, sta->addr), | |
2711 | (unsigned long long) prev_rates, | |
2712 | (unsigned long long) supp_rates, | |
2713 | (unsigned long long) sta->supp_rates[rx_status->band]); | |
f0706e82 | 2714 | } |
f0706e82 JB |
2715 | } |
2716 | ||
d0709a65 JB |
2717 | rcu_read_unlock(); |
2718 | ||
f0706e82 | 2719 | if (elems.ds_params && elems.ds_params_len == 1) |
8318d78a | 2720 | freq = ieee80211_channel_to_frequency(elems.ds_params[0]); |
f0706e82 | 2721 | else |
8318d78a | 2722 | freq = rx_status->freq; |
f0706e82 | 2723 | |
fab7d4a2 JB |
2724 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
2725 | ||
2726 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2727 | return; | |
2728 | ||
f709fc69 LCC |
2729 | #ifdef CONFIG_MAC80211_MESH |
2730 | if (elems.mesh_config) | |
2731 | bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id, | |
2732 | elems.mesh_id_len, elems.mesh_config, freq); | |
2733 | else | |
2734 | #endif | |
2735 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, | |
cffdd30d | 2736 | elems.ssid, elems.ssid_len); |
f709fc69 LCC |
2737 | if (!bss) { |
2738 | #ifdef CONFIG_MAC80211_MESH | |
2739 | if (elems.mesh_config) | |
2740 | bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id, | |
05e5e883 LCC |
2741 | elems.mesh_id_len, elems.mesh_config, |
2742 | elems.mesh_config_len, freq); | |
f709fc69 LCC |
2743 | else |
2744 | #endif | |
2745 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, | |
2746 | elems.ssid, elems.ssid_len); | |
f0706e82 JB |
2747 | if (!bss) |
2748 | return; | |
2749 | } else { | |
2750 | #if 0 | |
2751 | /* TODO: order by RSSI? */ | |
2752 | spin_lock_bh(&local->sta_bss_lock); | |
2753 | list_move_tail(&bss->list, &local->sta_bss_list); | |
2754 | spin_unlock_bh(&local->sta_bss_lock); | |
2755 | #endif | |
2756 | } | |
2757 | ||
5628221c DD |
2758 | /* save the ERP value so that it is available at association time */ |
2759 | if (elems.erp_info && elems.erp_info_len >= 1) { | |
2760 | bss->erp_value = elems.erp_info[0]; | |
2761 | bss->has_erp_value = 1; | |
2762 | } | |
2763 | ||
30b89b0f JB |
2764 | if (elems.ht_cap_elem && |
2765 | (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || | |
2766 | memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { | |
2767 | kfree(bss->ht_ie); | |
2768 | bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); | |
2769 | if (bss->ht_ie) { | |
2770 | memcpy(bss->ht_ie, elems.ht_cap_elem - 2, | |
2771 | elems.ht_cap_elem_len + 2); | |
2772 | bss->ht_ie_len = elems.ht_cap_elem_len + 2; | |
2773 | } else | |
2774 | bss->ht_ie_len = 0; | |
2775 | } else if (!elems.ht_cap_elem && bss->ht_ie) { | |
2776 | kfree(bss->ht_ie); | |
2777 | bss->ht_ie = NULL; | |
2778 | bss->ht_ie_len = 0; | |
2779 | } | |
2780 | ||
9306102e EG |
2781 | if (elems.ht_info_elem && |
2782 | (!bss->ht_add_ie || | |
2783 | bss->ht_add_ie_len != elems.ht_info_elem_len || | |
2784 | memcmp(bss->ht_add_ie, elems.ht_info_elem, | |
2785 | elems.ht_info_elem_len))) { | |
2786 | kfree(bss->ht_add_ie); | |
2787 | bss->ht_add_ie = | |
2788 | kmalloc(elems.ht_info_elem_len + 2, GFP_ATOMIC); | |
2789 | if (bss->ht_add_ie) { | |
2790 | memcpy(bss->ht_add_ie, elems.ht_info_elem - 2, | |
2791 | elems.ht_info_elem_len + 2); | |
2792 | bss->ht_add_ie_len = elems.ht_info_elem_len + 2; | |
2793 | } else | |
2794 | bss->ht_add_ie_len = 0; | |
2795 | } else if (!elems.ht_info_elem && bss->ht_add_ie) { | |
2796 | kfree(bss->ht_add_ie); | |
2797 | bss->ht_add_ie = NULL; | |
2798 | bss->ht_add_ie_len = 0; | |
2799 | } | |
2800 | ||
f0706e82 JB |
2801 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
2802 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 JB |
2803 | |
2804 | bss->supp_rates_len = 0; | |
2805 | if (elems.supp_rates) { | |
2806 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2807 | if (clen > elems.supp_rates_len) | |
2808 | clen = elems.supp_rates_len; | |
2809 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates, | |
2810 | clen); | |
2811 | bss->supp_rates_len += clen; | |
2812 | } | |
2813 | if (elems.ext_supp_rates) { | |
2814 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2815 | if (clen > elems.ext_supp_rates_len) | |
2816 | clen = elems.ext_supp_rates_len; | |
2817 | memcpy(&bss->supp_rates[bss->supp_rates_len], | |
2818 | elems.ext_supp_rates, clen); | |
2819 | bss->supp_rates_len += clen; | |
2820 | } | |
2821 | ||
30b89b0f JB |
2822 | bss->band = rx_status->band; |
2823 | ||
2824 | bss->timestamp = beacon_timestamp; | |
2825 | bss->last_update = jiffies; | |
30b89b0f JB |
2826 | bss->signal = rx_status->signal; |
2827 | bss->noise = rx_status->noise; | |
566bfe5a | 2828 | bss->qual = rx_status->qual; |
30b89b0f JB |
2829 | if (!beacon && !bss->probe_resp) |
2830 | bss->probe_resp = true; | |
2831 | ||
2832 | /* | |
2833 | * In STA mode, the remaining parameters should not be overridden | |
2834 | * by beacons because they're not necessarily accurate there. | |
2835 | */ | |
2836 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2837 | bss->probe_resp && beacon) { | |
2838 | ieee80211_rx_bss_put(dev, bss); | |
2839 | return; | |
2840 | } | |
2841 | ||
f0706e82 JB |
2842 | if (elems.wpa && |
2843 | (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || | |
2844 | memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { | |
2845 | kfree(bss->wpa_ie); | |
2846 | bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC); | |
2847 | if (bss->wpa_ie) { | |
2848 | memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2); | |
2849 | bss->wpa_ie_len = elems.wpa_len + 2; | |
2850 | } else | |
2851 | bss->wpa_ie_len = 0; | |
2852 | } else if (!elems.wpa && bss->wpa_ie) { | |
2853 | kfree(bss->wpa_ie); | |
2854 | bss->wpa_ie = NULL; | |
2855 | bss->wpa_ie_len = 0; | |
2856 | } | |
2857 | ||
2858 | if (elems.rsn && | |
2859 | (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len || | |
2860 | memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) { | |
2861 | kfree(bss->rsn_ie); | |
2862 | bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC); | |
2863 | if (bss->rsn_ie) { | |
2864 | memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2); | |
2865 | bss->rsn_ie_len = elems.rsn_len + 2; | |
2866 | } else | |
2867 | bss->rsn_ie_len = 0; | |
2868 | } else if (!elems.rsn && bss->rsn_ie) { | |
2869 | kfree(bss->rsn_ie); | |
2870 | bss->rsn_ie = NULL; | |
2871 | bss->rsn_ie_len = 0; | |
2872 | } | |
2873 | ||
30b89b0f JB |
2874 | /* |
2875 | * Cf. | |
2876 | * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC | |
2877 | * | |
2878 | * quoting: | |
2879 | * | |
2880 | * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia | |
2881 | * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi | |
2882 | * Alliance (September 1, 2004) is incorporated by reference herein. | |
2883 | * The inclusion of the WMM Parameters in probe responses and | |
2884 | * association responses is mandatory for WMM enabled networks. The | |
2885 | * inclusion of the WMM Parameters in beacons, however, is optional. | |
2886 | */ | |
2887 | ||
f0706e82 JB |
2888 | if (elems.wmm_param && |
2889 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || | |
2890 | memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { | |
2891 | kfree(bss->wmm_ie); | |
2892 | bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC); | |
2893 | if (bss->wmm_ie) { | |
2894 | memcpy(bss->wmm_ie, elems.wmm_param - 2, | |
2895 | elems.wmm_param_len + 2); | |
2896 | bss->wmm_ie_len = elems.wmm_param_len + 2; | |
2897 | } else | |
2898 | bss->wmm_ie_len = 0; | |
a46f025d AK |
2899 | } else if (elems.wmm_info && |
2900 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_info_len || | |
2901 | memcmp(bss->wmm_ie, elems.wmm_info, elems.wmm_info_len))) { | |
2902 | /* As for certain AP's Fifth bit is not set in WMM IE in | |
2903 | * beacon frames.So while parsing the beacon frame the | |
2904 | * wmm_info structure is used instead of wmm_param. | |
2905 | * wmm_info structure was never used to set bss->wmm_ie. | |
2906 | * This code fixes this problem by copying the WME | |
2907 | * information from wmm_info to bss->wmm_ie and enabling | |
2908 | * n-band association. | |
2909 | */ | |
2910 | kfree(bss->wmm_ie); | |
2911 | bss->wmm_ie = kmalloc(elems.wmm_info_len + 2, GFP_ATOMIC); | |
2912 | if (bss->wmm_ie) { | |
2913 | memcpy(bss->wmm_ie, elems.wmm_info - 2, | |
2914 | elems.wmm_info_len + 2); | |
2915 | bss->wmm_ie_len = elems.wmm_info_len + 2; | |
2916 | } else | |
2917 | bss->wmm_ie_len = 0; | |
2918 | } else if (!elems.wmm_param && !elems.wmm_info && bss->wmm_ie) { | |
f0706e82 JB |
2919 | kfree(bss->wmm_ie); |
2920 | bss->wmm_ie = NULL; | |
2921 | bss->wmm_ie_len = 0; | |
2922 | } | |
9d9bf77d BR |
2923 | |
2924 | /* check if we need to merge IBSS */ | |
2925 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
2926 | !local->sta_sw_scanning && !local->sta_hw_scanning && | |
fba4a1e6 | 2927 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d BR |
2928 | bss->freq == local->oper_channel->center_freq && |
2929 | elems.ssid_len == sdata->u.sta.ssid_len && | |
2930 | memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) { | |
2931 | if (rx_status->flag & RX_FLAG_TSFT) { | |
2932 | /* in order for correct IBSS merging we need mactime | |
2933 | * | |
2934 | * since mactime is defined as the time the first data | |
2935 | * symbol of the frame hits the PHY, and the timestamp | |
2936 | * of the beacon is defined as "the time that the data | |
2937 | * symbol containing the first bit of the timestamp is | |
2938 | * transmitted to the PHY plus the transmitting STA’s | |
2939 | * delays through its local PHY from the MAC-PHY | |
2940 | * interface to its interface with the WM" | |
2941 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2942 | * the receiver - we have to take into account the | |
2943 | * offset between the two. | |
2944 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2945 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2946 | */ | |
2947 | int rate = local->hw.wiphy->bands[rx_status->band]-> | |
2948 | bitrates[rx_status->rate_idx].bitrate; | |
2949 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2950 | } else if (local && local->ops && local->ops->get_tsf) | |
2951 | /* second best option: get current TSF */ | |
2952 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2953 | else | |
2954 | /* can't merge without knowing the TSF */ | |
2955 | rx_timestamp = -1LLU; | |
2956 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2957 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2958 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2959 | print_mac(mac, mgmt->sa), | |
2960 | print_mac(mac2, mgmt->bssid), | |
2961 | (unsigned long long)rx_timestamp, | |
2962 | (unsigned long long)beacon_timestamp, | |
2963 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2964 | jiffies); | |
2965 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2966 | if (beacon_timestamp > rx_timestamp) { | |
fba4a1e6 | 2967 | #ifndef CONFIG_MAC80211_IBSS_DEBUG |
d97cf015 | 2968 | if (net_ratelimit()) |
fba4a1e6 | 2969 | #endif |
9d9bf77d BR |
2970 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2971 | "local TSF - IBSS merge with BSSID %s\n", | |
2972 | dev->name, print_mac(mac, mgmt->bssid)); | |
2973 | ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); | |
2974 | ieee80211_ibss_add_sta(dev, NULL, | |
87291c02 VK |
2975 | mgmt->bssid, mgmt->sa, |
2976 | BIT(rx_status->rate_idx)); | |
9d9bf77d BR |
2977 | } |
2978 | } | |
2979 | ||
f0706e82 JB |
2980 | ieee80211_rx_bss_put(dev, bss); |
2981 | } | |
2982 | ||
2983 | ||
2984 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2985 | struct ieee80211_mgmt *mgmt, | |
2986 | size_t len, | |
2987 | struct ieee80211_rx_status *rx_status) | |
2988 | { | |
2989 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0); | |
2990 | } | |
2991 | ||
2992 | ||
2993 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2994 | struct ieee80211_mgmt *mgmt, | |
2995 | size_t len, | |
2996 | struct ieee80211_rx_status *rx_status) | |
2997 | { | |
f0706e82 JB |
2998 | struct ieee80211_sub_if_data *sdata; |
2999 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
3000 | size_t baselen; |
3001 | struct ieee802_11_elems elems; | |
d3c990fb RR |
3002 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
3003 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 3004 | u32 changed = 0; |
f0706e82 JB |
3005 | |
3006 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); | |
3007 | ||
3008 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
51fb61e7 | 3009 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3010 | return; |
3011 | ifsta = &sdata->u.sta; | |
3012 | ||
d6f2da5b | 3013 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
3014 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
3015 | return; | |
3016 | ||
3017 | /* Process beacon from the current BSS */ | |
3018 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3019 | if (baselen > len) | |
3020 | return; | |
3021 | ||
67a4cce4 | 3022 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 3023 | |
3434fbd3 JB |
3024 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
3025 | elems.wmm_param_len); | |
d18ef29f RC |
3026 | |
3027 | /* Do not send changes to driver if we are scanning. This removes | |
3028 | * requirement that driver's bss_info_changed function needs to be | |
3029 | * atomic. */ | |
3030 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
3031 | return; | |
3032 | ||
5628221c | 3033 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 3034 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
3035 | else { |
3036 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
3037 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
3038 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
3039 | } | |
f0706e82 | 3040 | |
d3c990fb | 3041 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 3042 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
3043 | struct ieee80211_ht_bss_info bss_info; |
3044 | ||
3045 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
3046 | (struct ieee80211_ht_addt_info *) | |
3047 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
3048 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
3049 | &bss_info); | |
d3c990fb RR |
3050 | } |
3051 | ||
471b3efd | 3052 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3053 | } |
3054 | ||
3055 | ||
3056 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
3057 | struct ieee80211_if_sta *ifsta, | |
3058 | struct ieee80211_mgmt *mgmt, | |
3059 | size_t len, | |
3060 | struct ieee80211_rx_status *rx_status) | |
3061 | { | |
3062 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3063 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3064 | int tx_last_beacon; | |
3065 | struct sk_buff *skb; | |
3066 | struct ieee80211_mgmt *resp; | |
3067 | u8 *pos, *end; | |
0795af57 JP |
3068 | DECLARE_MAC_BUF(mac); |
3069 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3070 | DECLARE_MAC_BUF(mac2); | |
3071 | DECLARE_MAC_BUF(mac3); | |
3072 | #endif | |
f0706e82 | 3073 | |
51fb61e7 | 3074 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
3075 | ifsta->state != IEEE80211_IBSS_JOINED || |
3076 | len < 24 + 2 || !ifsta->probe_resp) | |
3077 | return; | |
3078 | ||
3079 | if (local->ops->tx_last_beacon) | |
3080 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
3081 | else | |
3082 | tx_last_beacon = 1; | |
3083 | ||
3084 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3085 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
3086 | "%s (tx_last_beacon=%d)\n", | |
3087 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
3088 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
3089 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3090 | ||
3091 | if (!tx_last_beacon) | |
3092 | return; | |
3093 | ||
3094 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
3095 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
3096 | return; | |
3097 | ||
3098 | end = ((u8 *) mgmt) + len; | |
3099 | pos = mgmt->u.probe_req.variable; | |
3100 | if (pos[0] != WLAN_EID_SSID || | |
3101 | pos + 2 + pos[1] > end) { | |
3102 | if (net_ratelimit()) { | |
3103 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
0795af57 JP |
3104 | "from %s\n", |
3105 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
3106 | } |
3107 | return; | |
3108 | } | |
3109 | if (pos[1] != 0 && | |
3110 | (pos[1] != ifsta->ssid_len || | |
3111 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
3112 | /* Ignore ProbeReq for foreign SSID */ | |
3113 | return; | |
3114 | } | |
3115 | ||
3116 | /* Reply with ProbeResp */ | |
0ec0b7ac | 3117 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
3118 | if (!skb) |
3119 | return; | |
3120 | ||
3121 | resp = (struct ieee80211_mgmt *) skb->data; | |
3122 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
3123 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3124 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
3125 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
3126 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3127 | ieee80211_sta_tx(dev, skb, 0); | |
3128 | } | |
3129 | ||
4e20cb29 JB |
3130 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
3131 | struct ieee80211_if_sta *ifsta, | |
3132 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
3133 | size_t len, |
3134 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 3135 | { |
f709fc69 | 3136 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b6623486 | 3137 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f709fc69 | 3138 | |
9f985b0e RR |
3139 | if (len < IEEE80211_MIN_ACTION_SIZE) |
3140 | return; | |
3141 | ||
3142 | switch (mgmt->u.action.category) { | |
b6623486 AK |
3143 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
3144 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) | |
3145 | break; | |
3146 | switch (mgmt->u.action.u.chan_switch.action_code) { | |
3147 | case WLAN_ACTION_SPCT_MSR_REQ: | |
3148 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3149 | sizeof(mgmt->u.action.u.measurement))) | |
3150 | break; | |
3151 | ieee80211_sta_process_measurement_req(dev, mgmt, len); | |
3152 | break; | |
3153 | } | |
3154 | break; | |
9f985b0e RR |
3155 | case WLAN_CATEGORY_BACK: |
3156 | switch (mgmt->u.action.u.addba_req.action_code) { | |
3157 | case WLAN_ACTION_ADDBA_REQ: | |
3158 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3159 | sizeof(mgmt->u.action.u.addba_req))) | |
3160 | break; | |
3161 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
3162 | break; | |
eadc8d9e RR |
3163 | case WLAN_ACTION_ADDBA_RESP: |
3164 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3165 | sizeof(mgmt->u.action.u.addba_resp))) | |
3166 | break; | |
3167 | ieee80211_sta_process_addba_resp(dev, mgmt, len); | |
3168 | break; | |
688b88a4 RR |
3169 | case WLAN_ACTION_DELBA: |
3170 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3171 | sizeof(mgmt->u.action.u.delba))) | |
3172 | break; | |
3173 | ieee80211_sta_process_delba(dev, mgmt, len); | |
3174 | break; | |
9f985b0e RR |
3175 | default: |
3176 | if (net_ratelimit()) | |
688b88a4 | 3177 | printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n", |
9f985b0e RR |
3178 | dev->name); |
3179 | break; | |
3180 | } | |
3181 | break; | |
f709fc69 | 3182 | case PLINK_CATEGORY: |
902acc78 | 3183 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3184 | mesh_rx_plink_frame(dev, mgmt, len, rx_status); |
3185 | break; | |
f709fc69 | 3186 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 3187 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3188 | mesh_rx_path_sel_frame(dev, mgmt, len); |
3189 | break; | |
9f985b0e | 3190 | default: |
f709fc69 LCC |
3191 | if (net_ratelimit()) |
3192 | printk(KERN_DEBUG "%s: Rx unknown action frame - " | |
3193 | "category=%d\n", dev->name, mgmt->u.action.category); | |
9f985b0e RR |
3194 | break; |
3195 | } | |
3196 | } | |
f0706e82 JB |
3197 | |
3198 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
3199 | struct ieee80211_rx_status *rx_status) | |
3200 | { | |
3201 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3202 | struct ieee80211_sub_if_data *sdata; | |
3203 | struct ieee80211_if_sta *ifsta; | |
3204 | struct ieee80211_mgmt *mgmt; | |
3205 | u16 fc; | |
3206 | ||
3207 | if (skb->len < 24) | |
3208 | goto fail; | |
3209 | ||
3210 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3211 | ifsta = &sdata->u.sta; | |
3212 | ||
3213 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3214 | fc = le16_to_cpu(mgmt->frame_control); | |
3215 | ||
3216 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3217 | case IEEE80211_STYPE_PROBE_REQ: | |
3218 | case IEEE80211_STYPE_PROBE_RESP: | |
3219 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 3220 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
3221 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
3222 | case IEEE80211_STYPE_AUTH: | |
3223 | case IEEE80211_STYPE_ASSOC_RESP: | |
3224 | case IEEE80211_STYPE_REASSOC_RESP: | |
3225 | case IEEE80211_STYPE_DEAUTH: | |
3226 | case IEEE80211_STYPE_DISASSOC: | |
3227 | skb_queue_tail(&ifsta->skb_queue, skb); | |
3228 | queue_work(local->hw.workqueue, &ifsta->work); | |
3229 | return; | |
3230 | default: | |
3231 | printk(KERN_DEBUG "%s: received unknown management frame - " | |
3232 | "stype=%d\n", dev->name, | |
3233 | (fc & IEEE80211_FCTL_STYPE) >> 4); | |
3234 | break; | |
3235 | } | |
3236 | ||
3237 | fail: | |
3238 | kfree_skb(skb); | |
3239 | } | |
3240 | ||
3241 | ||
3242 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
3243 | struct sk_buff *skb) | |
3244 | { | |
3245 | struct ieee80211_rx_status *rx_status; | |
3246 | struct ieee80211_sub_if_data *sdata; | |
3247 | struct ieee80211_if_sta *ifsta; | |
3248 | struct ieee80211_mgmt *mgmt; | |
3249 | u16 fc; | |
3250 | ||
3251 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3252 | ifsta = &sdata->u.sta; | |
3253 | ||
3254 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
3255 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3256 | fc = le16_to_cpu(mgmt->frame_control); | |
3257 | ||
3258 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3259 | case IEEE80211_STYPE_PROBE_REQ: | |
3260 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
3261 | rx_status); | |
3262 | break; | |
3263 | case IEEE80211_STYPE_PROBE_RESP: | |
3264 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3265 | break; | |
3266 | case IEEE80211_STYPE_BEACON: | |
3267 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3268 | break; | |
3269 | case IEEE80211_STYPE_AUTH: | |
3270 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
3271 | break; | |
3272 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 3273 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
3274 | break; |
3275 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 3276 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
3277 | break; |
3278 | case IEEE80211_STYPE_DEAUTH: | |
3279 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
3280 | break; | |
3281 | case IEEE80211_STYPE_DISASSOC: | |
3282 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
3283 | break; | |
9f985b0e | 3284 | case IEEE80211_STYPE_ACTION: |
f709fc69 | 3285 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 3286 | break; |
f0706e82 JB |
3287 | } |
3288 | ||
3289 | kfree_skb(skb); | |
3290 | } | |
3291 | ||
3292 | ||
9ae54c84 | 3293 | ieee80211_rx_result |
ece8eddd ZY |
3294 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, |
3295 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
3296 | { |
3297 | struct ieee80211_mgmt *mgmt; | |
4e3996fe | 3298 | __le16 fc; |
f0706e82 | 3299 | |
ece8eddd | 3300 | if (skb->len < 2) |
e4c26add | 3301 | return RX_DROP_UNUSABLE; |
f0706e82 JB |
3302 | |
3303 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
4e3996fe | 3304 | fc = mgmt->frame_control; |
f0706e82 | 3305 | |
4e3996fe | 3306 | if (ieee80211_is_ctl(fc)) |
9ae54c84 | 3307 | return RX_CONTINUE; |
ece8eddd ZY |
3308 | |
3309 | if (skb->len < 24) | |
e4c26add | 3310 | return RX_DROP_MONITOR; |
ece8eddd | 3311 | |
4e3996fe HH |
3312 | if (ieee80211_is_probe_resp(fc)) { |
3313 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3314 | dev_kfree_skb(skb); | |
3315 | return RX_QUEUED; | |
f0706e82 | 3316 | } |
4e3996fe HH |
3317 | |
3318 | if (ieee80211_is_beacon(fc)) { | |
3319 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3320 | dev_kfree_skb(skb); | |
3321 | return RX_QUEUED; | |
3322 | } | |
3323 | ||
9ae54c84 | 3324 | return RX_CONTINUE; |
f0706e82 JB |
3325 | } |
3326 | ||
3327 | ||
3328 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
3329 | { | |
3330 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3331 | int active = 0; | |
3332 | struct sta_info *sta; | |
d0709a65 | 3333 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3334 | |
d0709a65 JB |
3335 | rcu_read_lock(); |
3336 | ||
3337 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
3338 | if (sta->sdata == sdata && | |
f0706e82 JB |
3339 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
3340 | jiffies)) { | |
3341 | active++; | |
3342 | break; | |
3343 | } | |
3344 | } | |
d0709a65 JB |
3345 | |
3346 | rcu_read_unlock(); | |
f0706e82 JB |
3347 | |
3348 | return active; | |
3349 | } | |
3350 | ||
3351 | ||
f709fc69 | 3352 | static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time) |
f0706e82 JB |
3353 | { |
3354 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3355 | struct sta_info *sta, *tmp; | |
be8755e1 | 3356 | LIST_HEAD(tmp_list); |
0795af57 | 3357 | DECLARE_MAC_BUF(mac); |
d0709a65 | 3358 | unsigned long flags; |
f0706e82 | 3359 | |
d0709a65 | 3360 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 3361 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 3362 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
0795af57 JP |
3363 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
3364 | dev->name, print_mac(mac, sta->addr)); | |
cb585bcc | 3365 | __sta_info_unlink(&sta); |
d0709a65 JB |
3366 | if (sta) |
3367 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 3368 | } |
d0709a65 | 3369 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 3370 | |
d0709a65 JB |
3371 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
3372 | sta_info_destroy(sta); | |
f0706e82 JB |
3373 | } |
3374 | ||
3375 | ||
3376 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
3377 | struct ieee80211_if_sta *ifsta) | |
3378 | { | |
3379 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
3380 | ||
f709fc69 | 3381 | ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT); |
f0706e82 JB |
3382 | if (ieee80211_sta_active_ibss(dev)) |
3383 | return; | |
3384 | ||
3385 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
3386 | "IBSS networks with same SSID (merge)\n", dev->name); | |
3387 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
3388 | } | |
3389 | ||
3390 | ||
f709fc69 LCC |
3391 | #ifdef CONFIG_MAC80211_MESH |
3392 | static void ieee80211_mesh_housekeeping(struct net_device *dev, | |
3393 | struct ieee80211_if_sta *ifsta) | |
3394 | { | |
3395 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3396 | bool free_plinks; | |
3397 | ||
3398 | ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); | |
3399 | mesh_path_expire(dev); | |
3400 | ||
3401 | free_plinks = mesh_plink_availables(sdata); | |
3402 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
3403 | ieee80211_if_config_beacon(dev); | |
3404 | ||
3405 | mod_timer(&ifsta->timer, jiffies + | |
3406 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
3407 | } | |
3408 | ||
3409 | ||
3410 | void ieee80211_start_mesh(struct net_device *dev) | |
3411 | { | |
3412 | struct ieee80211_if_sta *ifsta; | |
3413 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3414 | ifsta = &sdata->u.sta; | |
3415 | ifsta->state = IEEE80211_MESH_UP; | |
3416 | ieee80211_sta_timer((unsigned long)sdata); | |
3417 | } | |
3418 | #endif | |
3419 | ||
3420 | ||
f0706e82 JB |
3421 | void ieee80211_sta_timer(unsigned long data) |
3422 | { | |
3423 | struct ieee80211_sub_if_data *sdata = | |
3424 | (struct ieee80211_sub_if_data *) data; | |
3425 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3426 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
3427 | ||
3428 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3429 | queue_work(local->hw.workqueue, &ifsta->work); | |
3430 | } | |
3431 | ||
f0706e82 JB |
3432 | void ieee80211_sta_work(struct work_struct *work) |
3433 | { | |
3434 | struct ieee80211_sub_if_data *sdata = | |
3435 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
3436 | struct net_device *dev = sdata->dev; | |
3437 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3438 | struct ieee80211_if_sta *ifsta; | |
3439 | struct sk_buff *skb; | |
3440 | ||
3441 | if (!netif_running(dev)) | |
3442 | return; | |
3443 | ||
ece8eddd | 3444 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
3445 | return; |
3446 | ||
51fb61e7 | 3447 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
f709fc69 LCC |
3448 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
3449 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) { | |
f0706e82 | 3450 | printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " |
51fb61e7 | 3451 | "(type=%d)\n", dev->name, sdata->vif.type); |
f0706e82 JB |
3452 | return; |
3453 | } | |
3454 | ifsta = &sdata->u.sta; | |
3455 | ||
3456 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
3457 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
3458 | ||
f709fc69 | 3459 | #ifdef CONFIG_MAC80211_MESH |
902acc78 JB |
3460 | if (ifsta->preq_queue_len && |
3461 | time_after(jiffies, | |
3462 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
f709fc69 LCC |
3463 | mesh_path_start_discovery(dev); |
3464 | #endif | |
3465 | ||
f0706e82 JB |
3466 | if (ifsta->state != IEEE80211_AUTHENTICATE && |
3467 | ifsta->state != IEEE80211_ASSOCIATE && | |
3468 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
3469 | if (ifsta->scan_ssid_len) |
3470 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
3471 | else | |
3472 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
3473 | return; |
3474 | } | |
3475 | ||
3476 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
3477 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
3478 | return; | |
3479 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3480 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
3481 | return; | |
3482 | ||
3483 | switch (ifsta->state) { | |
3484 | case IEEE80211_DISABLED: | |
3485 | break; | |
3486 | case IEEE80211_AUTHENTICATE: | |
3487 | ieee80211_authenticate(dev, ifsta); | |
3488 | break; | |
3489 | case IEEE80211_ASSOCIATE: | |
3490 | ieee80211_associate(dev, ifsta); | |
3491 | break; | |
3492 | case IEEE80211_ASSOCIATED: | |
3493 | ieee80211_associated(dev, ifsta); | |
3494 | break; | |
3495 | case IEEE80211_IBSS_SEARCH: | |
3496 | ieee80211_sta_find_ibss(dev, ifsta); | |
3497 | break; | |
3498 | case IEEE80211_IBSS_JOINED: | |
3499 | ieee80211_sta_merge_ibss(dev, ifsta); | |
3500 | break; | |
f709fc69 LCC |
3501 | #ifdef CONFIG_MAC80211_MESH |
3502 | case IEEE80211_MESH_UP: | |
3503 | ieee80211_mesh_housekeeping(dev, ifsta); | |
3504 | break; | |
3505 | #endif | |
f0706e82 JB |
3506 | default: |
3507 | printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", | |
3508 | ifsta->state); | |
3509 | break; | |
3510 | } | |
3511 | ||
3512 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
3513 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
3514 | "mixed-cell disabled - disassociate\n", dev->name); | |
3515 | ||
3516 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
3517 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3518 | } | |
3519 | } | |
3520 | ||
3521 | ||
3522 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
3523 | struct ieee80211_if_sta *ifsta) | |
3524 | { | |
3525 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3526 | ||
3527 | if (local->ops->reset_tsf) { | |
3528 | /* Reset own TSF to allow time synchronization work. */ | |
3529 | local->ops->reset_tsf(local_to_hw(local)); | |
3530 | } | |
3531 | ||
3532 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
3533 | ||
3534 | ||
3535 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
3536 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3537 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
3538 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
3539 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
3540 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
3541 | else | |
3542 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3543 | printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name, | |
3544 | ifsta->auth_alg); | |
3545 | ifsta->auth_transaction = -1; | |
d6f2da5b JS |
3546 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
3547 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
3548 | netif_carrier_off(dev); |
3549 | } | |
3550 | ||
3551 | ||
3552 | void ieee80211_sta_req_auth(struct net_device *dev, | |
3553 | struct ieee80211_if_sta *ifsta) | |
3554 | { | |
3555 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3556 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3557 | ||
51fb61e7 | 3558 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3559 | return; |
3560 | ||
d6f2da5b JS |
3561 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3562 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
3563 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
3564 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
3565 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
3566 | queue_work(local->hw.workqueue, &ifsta->work); | |
3567 | } | |
3568 | } | |
3569 | ||
3570 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
3571 | const char *ssid, int ssid_len) | |
3572 | { | |
3573 | int tmp, hidden_ssid; | |
3574 | ||
48225709 MW |
3575 | if (ssid_len == ifsta->ssid_len && |
3576 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
3577 | return 1; |
3578 | ||
d6f2da5b | 3579 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
3580 | return 0; |
3581 | ||
3582 | hidden_ssid = 1; | |
3583 | tmp = ssid_len; | |
3584 | while (tmp--) { | |
3585 | if (ssid[tmp] != '\0') { | |
3586 | hidden_ssid = 0; | |
3587 | break; | |
3588 | } | |
3589 | } | |
3590 | ||
3591 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
3592 | return 1; | |
3593 | ||
3594 | if (ssid_len == 1 && ssid[0] == ' ') | |
3595 | return 1; | |
3596 | ||
3597 | return 0; | |
3598 | } | |
3599 | ||
3600 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
3601 | struct ieee80211_if_sta *ifsta) | |
3602 | { | |
3603 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3604 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3605 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
3606 | int top_rssi = 0, freq; | |
3607 | ||
f0706e82 | 3608 | spin_lock_bh(&local->sta_bss_lock); |
8318d78a | 3609 | freq = local->oper_channel->center_freq; |
f0706e82 JB |
3610 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
3611 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
3612 | continue; | |
3613 | ||
34a961f7 AK |
3614 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
3615 | IEEE80211_STA_AUTO_BSSID_SEL | | |
3616 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
3617 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
3618 | !!sdata->default_key)) | |
f0706e82 JB |
3619 | continue; |
3620 | ||
d6f2da5b JS |
3621 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
3622 | bss->freq != freq) | |
f0706e82 JB |
3623 | continue; |
3624 | ||
d6f2da5b | 3625 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
3626 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
3627 | continue; | |
3628 | ||
d6f2da5b | 3629 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
3630 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
3631 | continue; | |
3632 | ||
566bfe5a | 3633 | if (!selected || top_rssi < bss->signal) { |
f0706e82 | 3634 | selected = bss; |
566bfe5a | 3635 | top_rssi = bss->signal; |
f0706e82 JB |
3636 | } |
3637 | } | |
3638 | if (selected) | |
3639 | atomic_inc(&selected->users); | |
3640 | spin_unlock_bh(&local->sta_bss_lock); | |
3641 | ||
3642 | if (selected) { | |
be038b37 | 3643 | ieee80211_set_freq(dev, selected->freq); |
d6f2da5b | 3644 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
3645 | ieee80211_sta_set_ssid(dev, selected->ssid, |
3646 | selected->ssid_len); | |
3647 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
e2839d8f | 3648 | ieee80211_sta_def_wmm_params(dev, selected, 0); |
f0706e82 JB |
3649 | ieee80211_rx_bss_put(dev, selected); |
3650 | ifsta->state = IEEE80211_AUTHENTICATE; | |
f0706e82 JB |
3651 | ieee80211_sta_reset_auth(dev, ifsta); |
3652 | return 0; | |
3653 | } else { | |
3654 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 3655 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
3656 | ieee80211_sta_start_scan(dev, NULL, 0); |
3657 | else | |
3658 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
3659 | ifsta->ssid_len); | |
f0706e82 JB |
3660 | ifsta->state = IEEE80211_AUTHENTICATE; |
3661 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
3662 | } else | |
3663 | ifsta->state = IEEE80211_DISABLED; | |
3664 | } | |
f0706e82 JB |
3665 | return -1; |
3666 | } | |
3667 | ||
f0706e82 JB |
3668 | |
3669 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
3670 | struct ieee80211_if_sta *ifsta) | |
3671 | { | |
3672 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3673 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 3674 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
8318d78a | 3675 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3676 | u8 bssid[ETH_ALEN], *pos; |
3677 | int i; | |
167ad6f7 | 3678 | int ret; |
0795af57 | 3679 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3680 | |
3681 | #if 0 | |
3682 | /* Easier testing, use fixed BSSID. */ | |
3683 | memset(bssid, 0xfe, ETH_ALEN); | |
3684 | #else | |
3685 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
3686 | * own MAC address to make sure that devices that do not have proper | |
3687 | * random number generator get different BSSID. */ | |
3688 | get_random_bytes(bssid, ETH_ALEN); | |
3689 | for (i = 0; i < ETH_ALEN; i++) | |
3690 | bssid[i] ^= dev->dev_addr[i]; | |
3691 | bssid[0] &= ~0x01; | |
3692 | bssid[0] |= 0x02; | |
3693 | #endif | |
3694 | ||
0795af57 JP |
3695 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
3696 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 3697 | |
8318d78a JB |
3698 | bss = ieee80211_rx_bss_add(dev, bssid, |
3699 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3700 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
3701 | if (!bss) |
3702 | return -ENOMEM; | |
3703 | ||
8318d78a JB |
3704 | bss->band = local->hw.conf.channel->band; |
3705 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
3706 | |
3707 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 3708 | local->hw.conf.beacon_int = 100; |
f0706e82 | 3709 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
3710 | bss->last_update = jiffies; |
3711 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
3712 | |
3713 | if (sdata->default_key) | |
f0706e82 | 3714 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 3715 | else |
f0706e82 | 3716 | sdata->drop_unencrypted = 0; |
988c0f72 | 3717 | |
8318d78a | 3718 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 3719 | pos = bss->supp_rates; |
8318d78a JB |
3720 | for (i = 0; i < sband->n_bitrates; i++) { |
3721 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
3722 | *pos++ = (u8) (rate / 5); |
3723 | } | |
3724 | ||
167ad6f7 TW |
3725 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3726 | ieee80211_rx_bss_put(dev, bss); | |
3727 | return ret; | |
f0706e82 JB |
3728 | } |
3729 | ||
3730 | ||
3731 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
3732 | struct ieee80211_if_sta *ifsta) | |
3733 | { | |
3734 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3735 | struct ieee80211_sta_bss *bss; | |
3736 | int found = 0; | |
3737 | u8 bssid[ETH_ALEN]; | |
3738 | int active_ibss; | |
0795af57 JP |
3739 | DECLARE_MAC_BUF(mac); |
3740 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
3741 | |
3742 | if (ifsta->ssid_len == 0) | |
3743 | return -EINVAL; | |
3744 | ||
3745 | active_ibss = ieee80211_sta_active_ibss(dev); | |
3746 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3747 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
3748 | dev->name, active_ibss); | |
3749 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3750 | spin_lock_bh(&local->sta_bss_lock); | |
3751 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3752 | if (ifsta->ssid_len != bss->ssid_len || | |
3753 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
3754 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
3755 | continue; | |
3756 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3757 | printk(KERN_DEBUG " bssid=%s found\n", |
3758 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
3759 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3760 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
3761 | found = 1; | |
3762 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
3763 | break; | |
3764 | } | |
3765 | spin_unlock_bh(&local->sta_bss_lock); | |
3766 | ||
3767 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3768 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " |
3769 | "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid)); | |
f0706e82 JB |
3770 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3771 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && | |
8318d78a JB |
3772 | (bss = ieee80211_rx_bss_get(dev, bssid, |
3773 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3774 | ifsta->ssid, ifsta->ssid_len))) { |
167ad6f7 | 3775 | int ret; |
0795af57 | 3776 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 3777 | " based on configured SSID\n", |
0795af57 | 3778 | dev->name, print_mac(mac, bssid)); |
167ad6f7 TW |
3779 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3780 | ieee80211_rx_bss_put(dev, bss); | |
3781 | return ret; | |
f0706e82 JB |
3782 | } |
3783 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3784 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
3785 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3786 | ||
3787 | /* Selected IBSS not found in current scan results - try to scan */ | |
3788 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
3789 | !ieee80211_sta_active_ibss(dev)) { | |
3790 | mod_timer(&ifsta->timer, jiffies + | |
3791 | IEEE80211_IBSS_MERGE_INTERVAL); | |
3792 | } else if (time_after(jiffies, local->last_scan_completed + | |
3793 | IEEE80211_SCAN_INTERVAL)) { | |
3794 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
3795 | "join\n", dev->name); | |
3796 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
3797 | ifsta->ssid_len); | |
3798 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
3799 | int interval = IEEE80211_SCAN_INTERVAL; | |
3800 | ||
3801 | if (time_after(jiffies, ifsta->ibss_join_req + | |
3802 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 3803 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
3804 | (!(local->oper_channel->flags & |
3805 | IEEE80211_CHAN_NO_IBSS))) | |
f0706e82 | 3806 | return ieee80211_sta_create_ibss(dev, ifsta); |
d6f2da5b | 3807 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a JB |
3808 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
3809 | " %d MHz\n", dev->name, | |
3810 | local->hw.conf.channel->center_freq); | |
f0706e82 JB |
3811 | } |
3812 | ||
3813 | /* No IBSS found - decrease scan interval and continue | |
3814 | * scanning. */ | |
3815 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3816 | } | |
3817 | ||
3818 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3819 | mod_timer(&ifsta->timer, jiffies + interval); | |
3820 | return 0; | |
3821 | } | |
3822 | ||
3823 | return 0; | |
3824 | } | |
3825 | ||
3826 | ||
3827 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3828 | { | |
8318d78a | 3829 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3830 | struct ieee80211_if_sta *ifsta; |
f0706e82 JB |
3831 | |
3832 | if (len > IEEE80211_MAX_SSID_LEN) | |
3833 | return -EINVAL; | |
3834 | ||
f0706e82 JB |
3835 | ifsta = &sdata->u.sta; |
3836 | ||
3837 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) | |
d6f2da5b | 3838 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
3839 | memcpy(ifsta->ssid, ssid, len); |
3840 | memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len); | |
3841 | ifsta->ssid_len = len; | |
3842 | ||
d6f2da5b JS |
3843 | if (len) |
3844 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3845 | else | |
3846 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
51fb61e7 | 3847 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3848 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3849 | ifsta->ibss_join_req = jiffies; |
3850 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3851 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3852 | } | |
3853 | return 0; | |
3854 | } | |
3855 | ||
3856 | ||
3857 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3858 | { | |
3859 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3860 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3861 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3862 | *len = ifsta->ssid_len; | |
3863 | return 0; | |
3864 | } | |
3865 | ||
3866 | ||
3867 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3868 | { | |
3869 | struct ieee80211_sub_if_data *sdata; | |
3870 | struct ieee80211_if_sta *ifsta; | |
3871 | int res; | |
3872 | ||
3873 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3874 | ifsta = &sdata->u.sta; | |
3875 | ||
3876 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3877 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
3878 | res = ieee80211_if_config(dev); | |
3879 | if (res) { | |
3880 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3881 | "the low-level driver\n", dev->name); | |
3882 | return res; | |
3883 | } | |
3884 | } | |
3885 | ||
d6f2da5b JS |
3886 | if (is_valid_ether_addr(bssid)) |
3887 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3888 | else |
d6f2da5b JS |
3889 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3890 | ||
f0706e82 JB |
3891 | return 0; |
3892 | } | |
3893 | ||
3894 | ||
3895 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3896 | struct ieee80211_sub_if_data *sdata, | |
3897 | int powersave) | |
3898 | { | |
3899 | struct sk_buff *skb; | |
3900 | struct ieee80211_hdr *nullfunc; | |
4e3996fe | 3901 | __le16 fc; |
f0706e82 JB |
3902 | |
3903 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3904 | if (!skb) { | |
3905 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3906 | "frame\n", sdata->dev->name); | |
3907 | return; | |
3908 | } | |
3909 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3910 | ||
3911 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3912 | memset(nullfunc, 0, 24); | |
4e3996fe HH |
3913 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | |
3914 | IEEE80211_FCTL_TODS); | |
f0706e82 | 3915 | if (powersave) |
4e3996fe HH |
3916 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); |
3917 | nullfunc->frame_control = fc; | |
f0706e82 JB |
3918 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); |
3919 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3920 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3921 | ||
3922 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3923 | } | |
3924 | ||
3925 | ||
69d3b6f4 JB |
3926 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3927 | { | |
3928 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
3929 | ieee80211_vif_is_mesh(&sdata->vif)) | |
3930 | ieee80211_sta_timer((unsigned long)sdata); | |
3931 | } | |
3932 | ||
f0706e82 JB |
3933 | void ieee80211_scan_completed(struct ieee80211_hw *hw) |
3934 | { | |
3935 | struct ieee80211_local *local = hw_to_local(hw); | |
3936 | struct net_device *dev = local->scan_dev; | |
3937 | struct ieee80211_sub_if_data *sdata; | |
3938 | union iwreq_data wrqu; | |
3939 | ||
3940 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3941 | memset(&wrqu, 0, sizeof(wrqu)); |
3942 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3943 | |
ece8eddd ZY |
3944 | if (local->sta_hw_scanning) { |
3945 | local->sta_hw_scanning = 0; | |
675ef586 MA |
3946 | if (ieee80211_hw_config(local)) |
3947 | printk(KERN_DEBUG "%s: failed to restore operational " | |
3948 | "channel after scan\n", dev->name); | |
69d3b6f4 JB |
3949 | /* Restart STA timer for HW scan case */ |
3950 | rcu_read_lock(); | |
3951 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3952 | ieee80211_restart_sta_timer(sdata); | |
3953 | rcu_read_unlock(); | |
3954 | ||
ece8eddd ZY |
3955 | goto done; |
3956 | } | |
3957 | ||
3958 | local->sta_sw_scanning = 0; | |
f0706e82 | 3959 | if (ieee80211_hw_config(local)) |
4b50e388 | 3960 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3961 | "channel after scan\n", dev->name); |
3962 | ||
4150c572 JB |
3963 | |
3964 | netif_tx_lock_bh(local->mdev); | |
3965 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; | |
3966 | local->ops->configure_filter(local_to_hw(local), | |
3967 | FIF_BCN_PRBRESP_PROMISC, | |
3968 | &local->filter_flags, | |
3969 | local->mdev->mc_count, | |
3970 | local->mdev->mc_list); | |
3971 | ||
3972 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 | 3973 | |
79010420 JB |
3974 | rcu_read_lock(); |
3975 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3976 | |
3977 | /* No need to wake the master device. */ | |
3978 | if (sdata->dev == local->mdev) | |
3979 | continue; | |
3980 | ||
69d3b6f4 JB |
3981 | /* Tell AP we're back */ |
3982 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && | |
3983 | sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) | |
3984 | ieee80211_send_nullfunc(local, sdata, 0); | |
14042cbe | 3985 | |
69d3b6f4 | 3986 | ieee80211_restart_sta_timer(sdata); |
f709fc69 | 3987 | |
f0706e82 JB |
3988 | netif_wake_queue(sdata->dev); |
3989 | } | |
79010420 | 3990 | rcu_read_unlock(); |
f0706e82 | 3991 | |
ece8eddd | 3992 | done: |
f0706e82 | 3993 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3994 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3995 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3996 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
f0706e82 JB |
3997 | (!ifsta->state == IEEE80211_IBSS_JOINED && |
3998 | !ieee80211_sta_active_ibss(dev))) | |
3999 | ieee80211_sta_find_ibss(dev, ifsta); | |
4000 | } | |
4001 | } | |
4002 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
4003 | ||
4004 | void ieee80211_sta_scan_work(struct work_struct *work) | |
4005 | { | |
4006 | struct ieee80211_local *local = | |
4007 | container_of(work, struct ieee80211_local, scan_work.work); | |
4008 | struct net_device *dev = local->scan_dev; | |
4009 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
8318d78a | 4010 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
4011 | struct ieee80211_channel *chan; |
4012 | int skip; | |
4013 | unsigned long next_delay = 0; | |
4014 | ||
ece8eddd | 4015 | if (!local->sta_sw_scanning) |
f0706e82 JB |
4016 | return; |
4017 | ||
4018 | switch (local->scan_state) { | |
4019 | case SCAN_SET_CHANNEL: | |
69d464d5 JB |
4020 | /* |
4021 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS | |
4022 | * after we successfully scanned the last channel of the last | |
4023 | * band (and the last band is supported by the hw) | |
4024 | */ | |
8318d78a JB |
4025 | if (local->scan_band < IEEE80211_NUM_BANDS) |
4026 | sband = local->hw.wiphy->bands[local->scan_band]; | |
4027 | else | |
4028 | sband = NULL; | |
4029 | ||
69d464d5 JB |
4030 | /* |
4031 | * If we are at an unsupported band and have more bands | |
4032 | * left to scan, advance to the next supported one. | |
4033 | */ | |
4034 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { | |
8318d78a JB |
4035 | local->scan_band++; |
4036 | sband = local->hw.wiphy->bands[local->scan_band]; | |
4037 | local->scan_channel_idx = 0; | |
4038 | } | |
4039 | ||
69d464d5 JB |
4040 | /* if no more bands/channels left, complete scan */ |
4041 | if (!sband || local->scan_channel_idx >= sband->n_channels) { | |
f0706e82 JB |
4042 | ieee80211_scan_completed(local_to_hw(local)); |
4043 | return; | |
4044 | } | |
8318d78a JB |
4045 | skip = 0; |
4046 | chan = &sband->channels[local->scan_channel_idx]; | |
4047 | ||
4048 | if (chan->flags & IEEE80211_CHAN_DISABLED || | |
51fb61e7 | 4049 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
8318d78a | 4050 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
f0706e82 JB |
4051 | skip = 1; |
4052 | ||
4053 | if (!skip) { | |
f0706e82 JB |
4054 | local->scan_channel = chan; |
4055 | if (ieee80211_hw_config(local)) { | |
8318d78a JB |
4056 | printk(KERN_DEBUG "%s: failed to set freq to " |
4057 | "%d MHz for scan\n", dev->name, | |
4058 | chan->center_freq); | |
f0706e82 JB |
4059 | skip = 1; |
4060 | } | |
4061 | } | |
4062 | ||
69d464d5 | 4063 | /* advance state machine to next channel/band */ |
f0706e82 | 4064 | local->scan_channel_idx++; |
8318d78a | 4065 | if (local->scan_channel_idx >= sband->n_channels) { |
69d464d5 JB |
4066 | /* |
4067 | * scan_band may end up == IEEE80211_NUM_BANDS, but | |
4068 | * we'll catch that case above and complete the scan | |
4069 | * if that is the case. | |
4070 | */ | |
8318d78a JB |
4071 | local->scan_band++; |
4072 | local->scan_channel_idx = 0; | |
f0706e82 JB |
4073 | } |
4074 | ||
4075 | if (skip) | |
4076 | break; | |
4077 | ||
4078 | next_delay = IEEE80211_PROBE_DELAY + | |
4079 | usecs_to_jiffies(local->hw.channel_change_time); | |
4080 | local->scan_state = SCAN_SEND_PROBE; | |
4081 | break; | |
4082 | case SCAN_SEND_PROBE: | |
8318d78a | 4083 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
f0706e82 | 4084 | local->scan_state = SCAN_SET_CHANNEL; |
8318d78a JB |
4085 | |
4086 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
4087 | break; | |
4088 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
4089 | local->scan_ssid_len); | |
4090 | next_delay = IEEE80211_CHANNEL_TIME; | |
f0706e82 JB |
4091 | break; |
4092 | } | |
4093 | ||
ece8eddd | 4094 | if (local->sta_sw_scanning) |
f0706e82 JB |
4095 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
4096 | next_delay); | |
4097 | } | |
4098 | ||
4099 | ||
4100 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
4101 | u8 *ssid, size_t ssid_len) | |
4102 | { | |
4103 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4104 | struct ieee80211_sub_if_data *sdata; | |
4105 | ||
4106 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
4107 | return -EINVAL; | |
4108 | ||
4109 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
4110 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
4111 | * BSSID: MACAddress | |
4112 | * SSID | |
4113 | * ScanType: ACTIVE, PASSIVE | |
4114 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
4115 | * a Probe frame during active scanning | |
4116 | * ChannelList | |
4117 | * MinChannelTime (>= ProbeDelay), in TU | |
4118 | * MaxChannelTime: (>= MinChannelTime), in TU | |
4119 | */ | |
4120 | ||
4121 | /* MLME-SCAN.confirm | |
4122 | * BSSDescriptionSet | |
4123 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
4124 | */ | |
4125 | ||
ece8eddd | 4126 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4127 | if (local->scan_dev == dev) |
4128 | return 0; | |
4129 | return -EBUSY; | |
4130 | } | |
4131 | ||
4132 | if (local->ops->hw_scan) { | |
4133 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 4134 | ssid, ssid_len); |
f0706e82 | 4135 | if (!rc) { |
ece8eddd | 4136 | local->sta_hw_scanning = 1; |
f0706e82 JB |
4137 | local->scan_dev = dev; |
4138 | } | |
4139 | return rc; | |
4140 | } | |
4141 | ||
ece8eddd | 4142 | local->sta_sw_scanning = 1; |
f0706e82 | 4143 | |
79010420 JB |
4144 | rcu_read_lock(); |
4145 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
4146 | |
4147 | /* Don't stop the master interface, otherwise we can't transmit | |
4148 | * probes! */ | |
4149 | if (sdata->dev == local->mdev) | |
4150 | continue; | |
4151 | ||
f0706e82 | 4152 | netif_stop_queue(sdata->dev); |
51fb61e7 | 4153 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 4154 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4155 | ieee80211_send_nullfunc(local, sdata, 1); |
4156 | } | |
79010420 | 4157 | rcu_read_unlock(); |
f0706e82 JB |
4158 | |
4159 | if (ssid) { | |
4160 | local->scan_ssid_len = ssid_len; | |
4161 | memcpy(local->scan_ssid, ssid, ssid_len); | |
4162 | } else | |
4163 | local->scan_ssid_len = 0; | |
4164 | local->scan_state = SCAN_SET_CHANNEL; | |
f0706e82 | 4165 | local->scan_channel_idx = 0; |
8318d78a | 4166 | local->scan_band = IEEE80211_BAND_2GHZ; |
f0706e82 JB |
4167 | local->scan_dev = dev; |
4168 | ||
4150c572 JB |
4169 | netif_tx_lock_bh(local->mdev); |
4170 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; | |
4171 | local->ops->configure_filter(local_to_hw(local), | |
4172 | FIF_BCN_PRBRESP_PROMISC, | |
4173 | &local->filter_flags, | |
4174 | local->mdev->mc_count, | |
4175 | local->mdev->mc_list); | |
4176 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 JB |
4177 | |
4178 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
4179 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
4180 | IEEE80211_CHANNEL_TIME); | |
4181 | ||
4182 | return 0; | |
4183 | } | |
4184 | ||
4185 | ||
4186 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
4187 | { | |
4188 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4189 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4190 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4191 | ||
51fb61e7 | 4192 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4193 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
4194 | ||
ece8eddd | 4195 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4196 | if (local->scan_dev == dev) |
4197 | return 0; | |
4198 | return -EBUSY; | |
4199 | } | |
4200 | ||
a0af5f14 HS |
4201 | ifsta->scan_ssid_len = ssid_len; |
4202 | if (ssid_len) | |
4203 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
4204 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
4205 | queue_work(local->hw.workqueue, &ifsta->work); | |
4206 | return 0; | |
4207 | } | |
4208 | ||
4209 | static char * | |
4210 | ieee80211_sta_scan_result(struct net_device *dev, | |
ccc58057 | 4211 | struct iw_request_info *info, |
f0706e82 JB |
4212 | struct ieee80211_sta_bss *bss, |
4213 | char *current_ev, char *end_buf) | |
4214 | { | |
4215 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4216 | struct iw_event iwe; | |
4217 | ||
4218 | if (time_after(jiffies, | |
4219 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
4220 | return current_ev; | |
4221 | ||
f0706e82 JB |
4222 | memset(&iwe, 0, sizeof(iwe)); |
4223 | iwe.cmd = SIOCGIWAP; | |
4224 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
4225 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
ccc58057 | 4226 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4227 | IW_EV_ADDR_LEN); |
4228 | ||
4229 | memset(&iwe, 0, sizeof(iwe)); | |
4230 | iwe.cmd = SIOCGIWESSID; | |
902acc78 JB |
4231 | if (bss_mesh_cfg(bss)) { |
4232 | iwe.u.data.length = bss_mesh_id_len(bss); | |
f709fc69 | 4233 | iwe.u.data.flags = 1; |
ccc58057 DM |
4234 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4235 | &iwe, bss_mesh_id(bss)); | |
f709fc69 LCC |
4236 | } else { |
4237 | iwe.u.data.length = bss->ssid_len; | |
4238 | iwe.u.data.flags = 1; | |
ccc58057 DM |
4239 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4240 | &iwe, bss->ssid); | |
f709fc69 | 4241 | } |
f0706e82 | 4242 | |
1d1b5359 LCC |
4243 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) |
4244 | || bss_mesh_cfg(bss)) { | |
f0706e82 JB |
4245 | memset(&iwe, 0, sizeof(iwe)); |
4246 | iwe.cmd = SIOCGIWMODE; | |
902acc78 | 4247 | if (bss_mesh_cfg(bss)) |
f709fc69 LCC |
4248 | iwe.u.mode = IW_MODE_MESH; |
4249 | else if (bss->capability & WLAN_CAPABILITY_ESS) | |
f0706e82 JB |
4250 | iwe.u.mode = IW_MODE_MASTER; |
4251 | else | |
4252 | iwe.u.mode = IW_MODE_ADHOC; | |
ccc58057 DM |
4253 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
4254 | &iwe, IW_EV_UINT_LEN); | |
f0706e82 JB |
4255 | } |
4256 | ||
4257 | memset(&iwe, 0, sizeof(iwe)); | |
4258 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4259 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); |
4260 | iwe.u.freq.e = 0; | |
ccc58057 | 4261 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4262 | IW_EV_FREQ_LEN); |
8318d78a JB |
4263 | |
4264 | memset(&iwe, 0, sizeof(iwe)); | |
4265 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4266 | iwe.u.freq.m = bss->freq; |
4267 | iwe.u.freq.e = 6; | |
ccc58057 | 4268 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4269 | IW_EV_FREQ_LEN); |
f0706e82 JB |
4270 | memset(&iwe, 0, sizeof(iwe)); |
4271 | iwe.cmd = IWEVQUAL; | |
566bfe5a BR |
4272 | iwe.u.qual.qual = bss->qual; |
4273 | iwe.u.qual.level = bss->signal; | |
f0706e82 JB |
4274 | iwe.u.qual.noise = bss->noise; |
4275 | iwe.u.qual.updated = local->wstats_flags; | |
ccc58057 | 4276 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4277 | IW_EV_QUAL_LEN); |
4278 | ||
4279 | memset(&iwe, 0, sizeof(iwe)); | |
4280 | iwe.cmd = SIOCGIWENCODE; | |
4281 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
4282 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
4283 | else | |
4284 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
4285 | iwe.u.data.length = 0; | |
ccc58057 DM |
4286 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4287 | &iwe, ""); | |
f0706e82 JB |
4288 | |
4289 | if (bss && bss->wpa_ie) { | |
4290 | memset(&iwe, 0, sizeof(iwe)); | |
4291 | iwe.cmd = IWEVGENIE; | |
4292 | iwe.u.data.length = bss->wpa_ie_len; | |
ccc58057 DM |
4293 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4294 | &iwe, bss->wpa_ie); | |
f0706e82 JB |
4295 | } |
4296 | ||
4297 | if (bss && bss->rsn_ie) { | |
4298 | memset(&iwe, 0, sizeof(iwe)); | |
4299 | iwe.cmd = IWEVGENIE; | |
4300 | iwe.u.data.length = bss->rsn_ie_len; | |
ccc58057 DM |
4301 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4302 | &iwe, bss->rsn_ie); | |
f0706e82 JB |
4303 | } |
4304 | ||
e623157b EG |
4305 | if (bss && bss->ht_ie) { |
4306 | memset(&iwe, 0, sizeof(iwe)); | |
4307 | iwe.cmd = IWEVGENIE; | |
4308 | iwe.u.data.length = bss->ht_ie_len; | |
ccc58057 DM |
4309 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4310 | &iwe, bss->ht_ie); | |
e623157b EG |
4311 | } |
4312 | ||
f0706e82 JB |
4313 | if (bss && bss->supp_rates_len > 0) { |
4314 | /* display all supported rates in readable format */ | |
ccc58057 | 4315 | char *p = current_ev + iwe_stream_lcp_len(info); |
f0706e82 JB |
4316 | int i; |
4317 | ||
4318 | memset(&iwe, 0, sizeof(iwe)); | |
4319 | iwe.cmd = SIOCGIWRATE; | |
4320 | /* Those two flags are ignored... */ | |
4321 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
4322 | ||
4323 | for (i = 0; i < bss->supp_rates_len; i++) { | |
4324 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
4325 | 0x7f) * 500000); | |
ccc58057 | 4326 | p = iwe_stream_add_value(info, current_ev, p, |
f0706e82 JB |
4327 | end_buf, &iwe, IW_EV_PARAM_LEN); |
4328 | } | |
4329 | current_ev = p; | |
4330 | } | |
4331 | ||
4332 | if (bss) { | |
4333 | char *buf; | |
4334 | buf = kmalloc(30, GFP_ATOMIC); | |
4335 | if (buf) { | |
4336 | memset(&iwe, 0, sizeof(iwe)); | |
4337 | iwe.cmd = IWEVCUSTOM; | |
4338 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
4339 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
4340 | current_ev = iwe_stream_add_point(info, current_ev, |
4341 | end_buf, | |
f0706e82 | 4342 | &iwe, buf); |
bf998f68 EG |
4343 | memset(&iwe, 0, sizeof(iwe)); |
4344 | iwe.cmd = IWEVCUSTOM; | |
4345 | sprintf(buf, " Last beacon: %dms ago", | |
4346 | jiffies_to_msecs(jiffies - bss->last_update)); | |
4347 | iwe.u.data.length = strlen(buf); | |
4348 | current_ev = iwe_stream_add_point(info, current_ev, | |
4349 | end_buf, &iwe, buf); | |
f0706e82 JB |
4350 | kfree(buf); |
4351 | } | |
4352 | } | |
4353 | ||
902acc78 | 4354 | if (bss_mesh_cfg(bss)) { |
f709fc69 | 4355 | char *buf; |
24736701 | 4356 | u8 *cfg = bss_mesh_cfg(bss); |
4f5d4c4d | 4357 | buf = kmalloc(50, GFP_ATOMIC); |
f709fc69 LCC |
4358 | if (buf) { |
4359 | memset(&iwe, 0, sizeof(iwe)); | |
4360 | iwe.cmd = IWEVCUSTOM; | |
24736701 | 4361 | sprintf(buf, "Mesh network (version %d)", cfg[0]); |
4f5d4c4d | 4362 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4363 | current_ev = iwe_stream_add_point(info, current_ev, |
4364 | end_buf, | |
4f5d4c4d LCC |
4365 | &iwe, buf); |
4366 | sprintf(buf, "Path Selection Protocol ID: " | |
24736701 JL |
4367 | "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], |
4368 | cfg[4]); | |
4f5d4c4d | 4369 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4370 | current_ev = iwe_stream_add_point(info, current_ev, |
4371 | end_buf, | |
4f5d4c4d LCC |
4372 | &iwe, buf); |
4373 | sprintf(buf, "Path Selection Metric ID: " | |
24736701 JL |
4374 | "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], |
4375 | cfg[8]); | |
4f5d4c4d | 4376 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4377 | current_ev = iwe_stream_add_point(info, current_ev, |
4378 | end_buf, | |
4f5d4c4d LCC |
4379 | &iwe, buf); |
4380 | sprintf(buf, "Congestion Control Mode ID: " | |
24736701 JL |
4381 | "0x%02X%02X%02X%02X", cfg[9], cfg[10], |
4382 | cfg[11], cfg[12]); | |
4f5d4c4d | 4383 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4384 | current_ev = iwe_stream_add_point(info, current_ev, |
4385 | end_buf, | |
4f5d4c4d LCC |
4386 | &iwe, buf); |
4387 | sprintf(buf, "Channel Precedence: " | |
24736701 JL |
4388 | "0x%02X%02X%02X%02X", cfg[13], cfg[14], |
4389 | cfg[15], cfg[16]); | |
f709fc69 | 4390 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4391 | current_ev = iwe_stream_add_point(info, current_ev, |
4392 | end_buf, | |
f709fc69 LCC |
4393 | &iwe, buf); |
4394 | kfree(buf); | |
4395 | } | |
4396 | } | |
4397 | ||
f0706e82 JB |
4398 | return current_ev; |
4399 | } | |
4400 | ||
4401 | ||
ccc58057 DM |
4402 | int ieee80211_sta_scan_results(struct net_device *dev, |
4403 | struct iw_request_info *info, | |
4404 | char *buf, size_t len) | |
f0706e82 JB |
4405 | { |
4406 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4407 | char *current_ev = buf; | |
4408 | char *end_buf = buf + len; | |
4409 | struct ieee80211_sta_bss *bss; | |
4410 | ||
4411 | spin_lock_bh(&local->sta_bss_lock); | |
4412 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
4413 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
4414 | spin_unlock_bh(&local->sta_bss_lock); | |
4415 | return -E2BIG; | |
4416 | } | |
ccc58057 DM |
4417 | current_ev = ieee80211_sta_scan_result(dev, info, bss, |
4418 | current_ev, end_buf); | |
f0706e82 JB |
4419 | } |
4420 | spin_unlock_bh(&local->sta_bss_lock); | |
4421 | return current_ev - buf; | |
4422 | } | |
4423 | ||
4424 | ||
4425 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
4426 | { | |
4427 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4428 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
988c0f72 | 4429 | |
f0706e82 JB |
4430 | kfree(ifsta->extra_ie); |
4431 | if (len == 0) { | |
4432 | ifsta->extra_ie = NULL; | |
4433 | ifsta->extra_ie_len = 0; | |
4434 | return 0; | |
4435 | } | |
4436 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
4437 | if (!ifsta->extra_ie) { | |
4438 | ifsta->extra_ie_len = 0; | |
4439 | return -ENOMEM; | |
4440 | } | |
4441 | memcpy(ifsta->extra_ie, ie, len); | |
4442 | ifsta->extra_ie_len = len; | |
4443 | return 0; | |
4444 | } | |
4445 | ||
4446 | ||
988c0f72 JB |
4447 | struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, |
4448 | struct sk_buff *skb, u8 *bssid, | |
87291c02 | 4449 | u8 *addr, u64 supp_rates) |
f0706e82 JB |
4450 | { |
4451 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4452 | struct sta_info *sta; | |
91fa558b | 4453 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 4454 | DECLARE_MAC_BUF(mac); |
87291c02 | 4455 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
4456 | |
4457 | /* TODO: Could consider removing the least recently used entry and | |
4458 | * allow new one to be added. */ | |
4459 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
4460 | if (net_ratelimit()) { | |
4461 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 4462 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
4463 | } |
4464 | return NULL; | |
4465 | } | |
4466 | ||
87291c02 VK |
4467 | if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) |
4468 | return NULL; | |
4469 | ||
0795af57 | 4470 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 4471 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f0706e82 | 4472 | |
73651ee6 JB |
4473 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
4474 | if (!sta) | |
f0706e82 JB |
4475 | return NULL; |
4476 | ||
07346f81 | 4477 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 4478 | |
87291c02 VK |
4479 | if (supp_rates) |
4480 | sta->supp_rates[band] = supp_rates; | |
4481 | else | |
4482 | sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band]; | |
f0706e82 JB |
4483 | |
4484 | rate_control_rate_init(sta, local); | |
4485 | ||
93e5deb1 | 4486 | if (sta_info_insert(sta)) |
73651ee6 | 4487 | return NULL; |
73651ee6 | 4488 | |
d0709a65 | 4489 | return sta; |
f0706e82 JB |
4490 | } |
4491 | ||
4492 | ||
4493 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
4494 | { | |
4495 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4496 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4497 | ||
4498 | printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n", | |
4499 | dev->name, reason); | |
4500 | ||
51fb61e7 JB |
4501 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
4502 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
4503 | return -EINVAL; |
4504 | ||
4505 | ieee80211_send_deauth(dev, ifsta, reason); | |
4506 | ieee80211_set_disassoc(dev, ifsta, 1); | |
4507 | return 0; | |
4508 | } | |
4509 | ||
4510 | ||
4511 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
4512 | { | |
4513 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4514 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4515 | ||
4516 | printk(KERN_DEBUG "%s: disassociate(reason=%d)\n", | |
4517 | dev->name, reason); | |
4518 | ||
51fb61e7 | 4519 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4520 | return -EINVAL; |
4521 | ||
d6f2da5b | 4522 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4523 | return -1; |
4524 | ||
4525 | ieee80211_send_disassoc(dev, ifsta, reason); | |
4526 | ieee80211_set_disassoc(dev, ifsta, 0); | |
4527 | return 0; | |
4528 | } | |
84363e6e MA |
4529 | |
4530 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
4531 | enum ieee80211_notification_types notif_type) | |
4532 | { | |
4533 | struct ieee80211_local *local = hw_to_local(hw); | |
4534 | struct ieee80211_sub_if_data *sdata; | |
4535 | ||
4536 | switch (notif_type) { | |
4537 | case IEEE80211_NOTIFY_RE_ASSOC: | |
4538 | rcu_read_lock(); | |
4539 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
4540 | ||
4541 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { | |
4542 | ieee80211_sta_req_auth(sdata->dev, | |
4543 | &sdata->u.sta); | |
4544 | } | |
4545 | ||
4546 | } | |
4547 | rcu_read_unlock(); | |
4548 | break; | |
4549 | } | |
4550 | } | |
4551 | EXPORT_SYMBOL(ieee80211_notify_mac); |