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Commit | Line | Data |
---|---|---|
04a773ad JB |
1 | /* |
2 | * Some IBSS support code for cfg80211. | |
3 | * | |
4 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> | |
5 | */ | |
6 | ||
7 | #include <linux/etherdevice.h> | |
8 | #include <linux/if_arp.h> | |
5a0e3ad6 | 9 | #include <linux/slab.h> |
04a773ad | 10 | #include <net/cfg80211.h> |
0e82ffe3 | 11 | #include "wext-compat.h" |
04a773ad JB |
12 | #include "nl80211.h" |
13 | ||
14 | ||
667503dd | 15 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid) |
04a773ad JB |
16 | { |
17 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
18 | struct cfg80211_bss *bss; | |
3d23e349 | 19 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
20 | union iwreq_data wrqu; |
21 | #endif | |
22 | ||
23 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
24 | return; | |
25 | ||
f7969969 | 26 | if (!wdev->ssid_len) |
04a773ad JB |
27 | return; |
28 | ||
04a773ad JB |
29 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
30 | wdev->ssid, wdev->ssid_len, | |
31 | WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); | |
32 | ||
33 | if (WARN_ON(!bss)) | |
34 | return; | |
35 | ||
36 | if (wdev->current_bss) { | |
37 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 38 | cfg80211_put_bss(&wdev->current_bss->pub); |
04a773ad JB |
39 | } |
40 | ||
19957bb3 JB |
41 | cfg80211_hold_bss(bss_from_pub(bss)); |
42 | wdev->current_bss = bss_from_pub(bss); | |
04a773ad | 43 | |
fffd0934 JB |
44 | cfg80211_upload_connect_keys(wdev); |
45 | ||
667503dd JB |
46 | nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, |
47 | GFP_KERNEL); | |
3d23e349 | 48 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
49 | memset(&wrqu, 0, sizeof(wrqu)); |
50 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
51 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
52 | #endif | |
53 | } | |
667503dd JB |
54 | |
55 | void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) | |
56 | { | |
57 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
58 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
59 | struct cfg80211_event *ev; | |
60 | unsigned long flags; | |
61 | ||
f7969969 JB |
62 | CFG80211_DEV_WARN_ON(!wdev->ssid_len); |
63 | ||
667503dd JB |
64 | ev = kzalloc(sizeof(*ev), gfp); |
65 | if (!ev) | |
66 | return; | |
67 | ||
68 | ev->type = EVENT_IBSS_JOINED; | |
69 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
70 | ||
71 | spin_lock_irqsave(&wdev->event_lock, flags); | |
72 | list_add_tail(&ev->list, &wdev->event_list); | |
73 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 74 | queue_work(cfg80211_wq, &rdev->event_work); |
667503dd | 75 | } |
04a773ad JB |
76 | EXPORT_SYMBOL(cfg80211_ibss_joined); |
77 | ||
667503dd JB |
78 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
79 | struct net_device *dev, | |
fffd0934 JB |
80 | struct cfg80211_ibss_params *params, |
81 | struct cfg80211_cached_keys *connkeys) | |
04a773ad JB |
82 | { |
83 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
84 | int err; | |
85 | ||
667503dd JB |
86 | ASSERT_WDEV_LOCK(wdev); |
87 | ||
04a773ad JB |
88 | if (wdev->ssid_len) |
89 | return -EALREADY; | |
90 | ||
93b05238 JB |
91 | if (!params->basic_rates) { |
92 | /* | |
93 | * If no rates were explicitly configured, | |
94 | * use the mandatory rate set for 11b or | |
95 | * 11a for maximum compatibility. | |
96 | */ | |
97 | struct ieee80211_supported_band *sband = | |
98 | rdev->wiphy.bands[params->channel->band]; | |
99 | int j; | |
100 | u32 flag = params->channel->band == IEEE80211_BAND_5GHZ ? | |
101 | IEEE80211_RATE_MANDATORY_A : | |
102 | IEEE80211_RATE_MANDATORY_B; | |
103 | ||
104 | for (j = 0; j < sband->n_bitrates; j++) { | |
105 | if (sband->bitrates[j].flags & flag) | |
106 | params->basic_rates |= BIT(j); | |
107 | } | |
108 | } | |
109 | ||
fffd0934 JB |
110 | if (WARN_ON(wdev->connect_keys)) |
111 | kfree(wdev->connect_keys); | |
112 | wdev->connect_keys = connkeys; | |
113 | ||
3d23e349 | 114 | #ifdef CONFIG_CFG80211_WEXT |
cbe8fa9c | 115 | wdev->wext.ibss.channel = params->channel; |
04a773ad JB |
116 | #endif |
117 | err = rdev->ops->join_ibss(&rdev->wiphy, dev, params); | |
fffd0934 JB |
118 | if (err) { |
119 | wdev->connect_keys = NULL; | |
04a773ad | 120 | return err; |
fffd0934 | 121 | } |
04a773ad JB |
122 | |
123 | memcpy(wdev->ssid, params->ssid, params->ssid_len); | |
124 | wdev->ssid_len = params->ssid_len; | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
667503dd JB |
129 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
130 | struct net_device *dev, | |
fffd0934 JB |
131 | struct cfg80211_ibss_params *params, |
132 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
133 | { |
134 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
135 | int err; | |
136 | ||
59bbb6f7 | 137 | mutex_lock(&rdev->devlist_mtx); |
667503dd | 138 | wdev_lock(wdev); |
fffd0934 | 139 | err = __cfg80211_join_ibss(rdev, dev, params, connkeys); |
667503dd | 140 | wdev_unlock(wdev); |
59bbb6f7 | 141 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
142 | |
143 | return err; | |
144 | } | |
145 | ||
146 | static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) | |
04a773ad JB |
147 | { |
148 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
149 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
150 | int i; | |
04a773ad | 151 | |
667503dd JB |
152 | ASSERT_WDEV_LOCK(wdev); |
153 | ||
fffd0934 JB |
154 | kfree(wdev->connect_keys); |
155 | wdev->connect_keys = NULL; | |
156 | ||
157 | /* | |
158 | * Delete all the keys ... pairwise keys can't really | |
159 | * exist any more anyway, but default keys might. | |
160 | */ | |
161 | if (rdev->ops->del_key) | |
162 | for (i = 0; i < 6; i++) | |
e31b8213 | 163 | rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL); |
fffd0934 | 164 | |
04a773ad JB |
165 | if (wdev->current_bss) { |
166 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 167 | cfg80211_put_bss(&wdev->current_bss->pub); |
04a773ad JB |
168 | } |
169 | ||
170 | wdev->current_bss = NULL; | |
171 | wdev->ssid_len = 0; | |
3d23e349 | 172 | #ifdef CONFIG_CFG80211_WEXT |
9d308429 | 173 | if (!nowext) |
cbe8fa9c | 174 | wdev->wext.ibss.ssid_len = 0; |
9d308429 | 175 | #endif |
04a773ad JB |
176 | } |
177 | ||
667503dd JB |
178 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
179 | { | |
180 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
181 | ||
182 | wdev_lock(wdev); | |
183 | __cfg80211_clear_ibss(dev, nowext); | |
184 | wdev_unlock(wdev); | |
185 | } | |
186 | ||
98d3a7ca JB |
187 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
188 | struct net_device *dev, bool nowext) | |
04a773ad | 189 | { |
78485475 | 190 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
04a773ad JB |
191 | int err; |
192 | ||
667503dd JB |
193 | ASSERT_WDEV_LOCK(wdev); |
194 | ||
78485475 JB |
195 | if (!wdev->ssid_len) |
196 | return -ENOLINK; | |
197 | ||
04a773ad JB |
198 | err = rdev->ops->leave_ibss(&rdev->wiphy, dev); |
199 | ||
200 | if (err) | |
201 | return err; | |
202 | ||
667503dd | 203 | __cfg80211_clear_ibss(dev, nowext); |
04a773ad JB |
204 | |
205 | return 0; | |
206 | } | |
207 | ||
667503dd JB |
208 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
209 | struct net_device *dev, bool nowext) | |
210 | { | |
211 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
212 | int err; | |
213 | ||
214 | wdev_lock(wdev); | |
215 | err = __cfg80211_leave_ibss(rdev, dev, nowext); | |
216 | wdev_unlock(wdev); | |
217 | ||
218 | return err; | |
219 | } | |
220 | ||
3d23e349 | 221 | #ifdef CONFIG_CFG80211_WEXT |
fffd0934 JB |
222 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
223 | struct wireless_dev *wdev) | |
04a773ad | 224 | { |
fffd0934 | 225 | struct cfg80211_cached_keys *ck = NULL; |
04a773ad | 226 | enum ieee80211_band band; |
fffd0934 JB |
227 | int i, err; |
228 | ||
229 | ASSERT_WDEV_LOCK(wdev); | |
04a773ad | 230 | |
cbe8fa9c JB |
231 | if (!wdev->wext.ibss.beacon_interval) |
232 | wdev->wext.ibss.beacon_interval = 100; | |
8e30bc55 | 233 | |
04a773ad | 234 | /* try to find an IBSS channel if none requested ... */ |
cbe8fa9c | 235 | if (!wdev->wext.ibss.channel) { |
04a773ad JB |
236 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
237 | struct ieee80211_supported_band *sband; | |
238 | struct ieee80211_channel *chan; | |
239 | ||
240 | sband = rdev->wiphy.bands[band]; | |
241 | if (!sband) | |
242 | continue; | |
243 | ||
244 | for (i = 0; i < sband->n_channels; i++) { | |
245 | chan = &sband->channels[i]; | |
246 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
247 | continue; | |
248 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
249 | continue; | |
cbe8fa9c | 250 | wdev->wext.ibss.channel = chan; |
04a773ad JB |
251 | break; |
252 | } | |
253 | ||
cbe8fa9c | 254 | if (wdev->wext.ibss.channel) |
04a773ad JB |
255 | break; |
256 | } | |
257 | ||
cbe8fa9c | 258 | if (!wdev->wext.ibss.channel) |
04a773ad JB |
259 | return -EINVAL; |
260 | } | |
261 | ||
262 | /* don't join -- SSID is not there */ | |
cbe8fa9c | 263 | if (!wdev->wext.ibss.ssid_len) |
04a773ad JB |
264 | return 0; |
265 | ||
266 | if (!netif_running(wdev->netdev)) | |
267 | return 0; | |
268 | ||
3be61a38 | 269 | if (wdev->wext.keys) { |
fffd0934 | 270 | wdev->wext.keys->def = wdev->wext.default_key; |
3be61a38 JB |
271 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; |
272 | } | |
fffd0934 JB |
273 | |
274 | wdev->wext.ibss.privacy = wdev->wext.default_key != -1; | |
275 | ||
276 | if (wdev->wext.keys) { | |
277 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
278 | if (!ck) | |
279 | return -ENOMEM; | |
280 | for (i = 0; i < 6; i++) | |
281 | ck->params[i].key = ck->data[i]; | |
282 | } | |
283 | err = __cfg80211_join_ibss(rdev, wdev->netdev, | |
284 | &wdev->wext.ibss, ck); | |
285 | if (err) | |
286 | kfree(ck); | |
287 | ||
288 | return err; | |
04a773ad JB |
289 | } |
290 | ||
291 | int cfg80211_ibss_wext_siwfreq(struct net_device *dev, | |
292 | struct iw_request_info *info, | |
59bbb6f7 | 293 | struct iw_freq *wextfreq, char *extra) |
04a773ad JB |
294 | { |
295 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 JB |
296 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
297 | struct ieee80211_channel *chan = NULL; | |
298 | int err, freq; | |
04a773ad JB |
299 | |
300 | /* call only for ibss! */ | |
301 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
302 | return -EINVAL; | |
303 | ||
59bbb6f7 | 304 | if (!rdev->ops->join_ibss) |
04a773ad JB |
305 | return -EOPNOTSUPP; |
306 | ||
59bbb6f7 JB |
307 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
308 | if (freq < 0) | |
309 | return freq; | |
04a773ad | 310 | |
59bbb6f7 JB |
311 | if (freq) { |
312 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
313 | if (!chan) | |
314 | return -EINVAL; | |
315 | if (chan->flags & IEEE80211_CHAN_NO_IBSS || | |
316 | chan->flags & IEEE80211_CHAN_DISABLED) | |
317 | return -EINVAL; | |
318 | } | |
04a773ad | 319 | |
cbe8fa9c | 320 | if (wdev->wext.ibss.channel == chan) |
04a773ad JB |
321 | return 0; |
322 | ||
667503dd JB |
323 | wdev_lock(wdev); |
324 | err = 0; | |
325 | if (wdev->ssid_len) | |
59bbb6f7 | 326 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
327 | wdev_unlock(wdev); |
328 | ||
329 | if (err) | |
330 | return err; | |
04a773ad JB |
331 | |
332 | if (chan) { | |
cbe8fa9c JB |
333 | wdev->wext.ibss.channel = chan; |
334 | wdev->wext.ibss.channel_fixed = true; | |
04a773ad JB |
335 | } else { |
336 | /* cfg80211_ibss_wext_join will pick one if needed */ | |
cbe8fa9c | 337 | wdev->wext.ibss.channel_fixed = false; |
04a773ad JB |
338 | } |
339 | ||
59bbb6f7 | 340 | mutex_lock(&rdev->devlist_mtx); |
fffd0934 | 341 | wdev_lock(wdev); |
59bbb6f7 | 342 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 | 343 | wdev_unlock(wdev); |
59bbb6f7 | 344 | mutex_unlock(&rdev->devlist_mtx); |
fffd0934 JB |
345 | |
346 | return err; | |
04a773ad | 347 | } |
04a773ad JB |
348 | |
349 | int cfg80211_ibss_wext_giwfreq(struct net_device *dev, | |
350 | struct iw_request_info *info, | |
351 | struct iw_freq *freq, char *extra) | |
352 | { | |
353 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
354 | struct ieee80211_channel *chan = NULL; | |
355 | ||
356 | /* call only for ibss! */ | |
357 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
358 | return -EINVAL; | |
359 | ||
667503dd | 360 | wdev_lock(wdev); |
04a773ad | 361 | if (wdev->current_bss) |
19957bb3 | 362 | chan = wdev->current_bss->pub.channel; |
cbe8fa9c JB |
363 | else if (wdev->wext.ibss.channel) |
364 | chan = wdev->wext.ibss.channel; | |
667503dd | 365 | wdev_unlock(wdev); |
04a773ad JB |
366 | |
367 | if (chan) { | |
368 | freq->m = chan->center_freq; | |
369 | freq->e = 6; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | /* no channel if not joining */ | |
374 | return -EINVAL; | |
375 | } | |
04a773ad JB |
376 | |
377 | int cfg80211_ibss_wext_siwessid(struct net_device *dev, | |
378 | struct iw_request_info *info, | |
379 | struct iw_point *data, char *ssid) | |
380 | { | |
381 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 382 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
383 | size_t len = data->length; |
384 | int err; | |
385 | ||
386 | /* call only for ibss! */ | |
387 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
388 | return -EINVAL; | |
389 | ||
59bbb6f7 | 390 | if (!rdev->ops->join_ibss) |
04a773ad JB |
391 | return -EOPNOTSUPP; |
392 | ||
667503dd JB |
393 | wdev_lock(wdev); |
394 | err = 0; | |
395 | if (wdev->ssid_len) | |
59bbb6f7 | 396 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
397 | wdev_unlock(wdev); |
398 | ||
399 | if (err) | |
400 | return err; | |
04a773ad JB |
401 | |
402 | /* iwconfig uses nul termination in SSID.. */ | |
403 | if (len > 0 && ssid[len - 1] == '\0') | |
404 | len--; | |
405 | ||
cbe8fa9c JB |
406 | wdev->wext.ibss.ssid = wdev->ssid; |
407 | memcpy(wdev->wext.ibss.ssid, ssid, len); | |
408 | wdev->wext.ibss.ssid_len = len; | |
04a773ad | 409 | |
59bbb6f7 | 410 | mutex_lock(&rdev->devlist_mtx); |
fffd0934 | 411 | wdev_lock(wdev); |
59bbb6f7 | 412 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 | 413 | wdev_unlock(wdev); |
59bbb6f7 | 414 | mutex_unlock(&rdev->devlist_mtx); |
fffd0934 JB |
415 | |
416 | return err; | |
04a773ad | 417 | } |
04a773ad JB |
418 | |
419 | int cfg80211_ibss_wext_giwessid(struct net_device *dev, | |
420 | struct iw_request_info *info, | |
421 | struct iw_point *data, char *ssid) | |
422 | { | |
423 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
424 | ||
425 | /* call only for ibss! */ | |
426 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
427 | return -EINVAL; | |
428 | ||
429 | data->flags = 0; | |
430 | ||
667503dd | 431 | wdev_lock(wdev); |
04a773ad JB |
432 | if (wdev->ssid_len) { |
433 | data->flags = 1; | |
434 | data->length = wdev->ssid_len; | |
435 | memcpy(ssid, wdev->ssid, data->length); | |
cbe8fa9c | 436 | } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { |
04a773ad | 437 | data->flags = 1; |
cbe8fa9c JB |
438 | data->length = wdev->wext.ibss.ssid_len; |
439 | memcpy(ssid, wdev->wext.ibss.ssid, data->length); | |
04a773ad | 440 | } |
667503dd | 441 | wdev_unlock(wdev); |
04a773ad JB |
442 | |
443 | return 0; | |
444 | } | |
04a773ad JB |
445 | |
446 | int cfg80211_ibss_wext_siwap(struct net_device *dev, | |
447 | struct iw_request_info *info, | |
448 | struct sockaddr *ap_addr, char *extra) | |
449 | { | |
450 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 451 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
452 | u8 *bssid = ap_addr->sa_data; |
453 | int err; | |
454 | ||
455 | /* call only for ibss! */ | |
456 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
457 | return -EINVAL; | |
458 | ||
59bbb6f7 | 459 | if (!rdev->ops->join_ibss) |
04a773ad JB |
460 | return -EOPNOTSUPP; |
461 | ||
462 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
463 | return -EINVAL; | |
464 | ||
465 | /* automatic mode */ | |
466 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
467 | bssid = NULL; | |
468 | ||
469 | /* both automatic */ | |
cbe8fa9c | 470 | if (!bssid && !wdev->wext.ibss.bssid) |
04a773ad JB |
471 | return 0; |
472 | ||
473 | /* fixed already - and no change */ | |
cbe8fa9c JB |
474 | if (wdev->wext.ibss.bssid && bssid && |
475 | compare_ether_addr(bssid, wdev->wext.ibss.bssid) == 0) | |
04a773ad JB |
476 | return 0; |
477 | ||
667503dd JB |
478 | wdev_lock(wdev); |
479 | err = 0; | |
480 | if (wdev->ssid_len) | |
59bbb6f7 | 481 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
482 | wdev_unlock(wdev); |
483 | ||
484 | if (err) | |
485 | return err; | |
04a773ad JB |
486 | |
487 | if (bssid) { | |
cbe8fa9c JB |
488 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); |
489 | wdev->wext.ibss.bssid = wdev->wext.bssid; | |
04a773ad | 490 | } else |
cbe8fa9c | 491 | wdev->wext.ibss.bssid = NULL; |
04a773ad | 492 | |
59bbb6f7 | 493 | mutex_lock(&rdev->devlist_mtx); |
fffd0934 | 494 | wdev_lock(wdev); |
59bbb6f7 | 495 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 | 496 | wdev_unlock(wdev); |
59bbb6f7 | 497 | mutex_unlock(&rdev->devlist_mtx); |
fffd0934 JB |
498 | |
499 | return err; | |
04a773ad | 500 | } |
04a773ad JB |
501 | |
502 | int cfg80211_ibss_wext_giwap(struct net_device *dev, | |
503 | struct iw_request_info *info, | |
504 | struct sockaddr *ap_addr, char *extra) | |
505 | { | |
506 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
507 | ||
508 | /* call only for ibss! */ | |
509 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
510 | return -EINVAL; | |
511 | ||
512 | ap_addr->sa_family = ARPHRD_ETHER; | |
513 | ||
667503dd | 514 | wdev_lock(wdev); |
7ebbe6bd | 515 | if (wdev->current_bss) |
19957bb3 | 516 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
80e5b06a | 517 | else if (wdev->wext.ibss.bssid) |
cbe8fa9c | 518 | memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); |
80e5b06a ZY |
519 | else |
520 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
521 | ||
667503dd JB |
522 | wdev_unlock(wdev); |
523 | ||
04a773ad JB |
524 | return 0; |
525 | } | |
04a773ad | 526 | #endif |