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> |
bc3b2d7f | 10 | #include <linux/export.h> |
04a773ad | 11 | #include <net/cfg80211.h> |
0e82ffe3 | 12 | #include "wext-compat.h" |
04a773ad | 13 | #include "nl80211.h" |
e35e4d28 | 14 | #include "rdev-ops.h" |
04a773ad JB |
15 | |
16 | ||
667503dd | 17 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid) |
04a773ad JB |
18 | { |
19 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
20 | struct cfg80211_bss *bss; | |
3d23e349 | 21 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
22 | union iwreq_data wrqu; |
23 | #endif | |
24 | ||
25 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
26 | return; | |
27 | ||
f7969969 | 28 | if (!wdev->ssid_len) |
04a773ad JB |
29 | return; |
30 | ||
04a773ad JB |
31 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, |
32 | wdev->ssid, wdev->ssid_len, | |
33 | WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); | |
34 | ||
35 | if (WARN_ON(!bss)) | |
36 | return; | |
37 | ||
38 | if (wdev->current_bss) { | |
39 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 40 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
41 | } |
42 | ||
19957bb3 JB |
43 | cfg80211_hold_bss(bss_from_pub(bss)); |
44 | wdev->current_bss = bss_from_pub(bss); | |
04a773ad | 45 | |
fffd0934 JB |
46 | cfg80211_upload_connect_keys(wdev); |
47 | ||
667503dd JB |
48 | nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, |
49 | GFP_KERNEL); | |
3d23e349 | 50 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
51 | memset(&wrqu, 0, sizeof(wrqu)); |
52 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
53 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
54 | #endif | |
55 | } | |
667503dd JB |
56 | |
57 | void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) | |
58 | { | |
59 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
60 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
61 | struct cfg80211_event *ev; | |
62 | unsigned long flags; | |
63 | ||
4ee3e063 BL |
64 | trace_cfg80211_ibss_joined(dev, bssid); |
65 | ||
667503dd JB |
66 | ev = kzalloc(sizeof(*ev), gfp); |
67 | if (!ev) | |
68 | return; | |
69 | ||
70 | ev->type = EVENT_IBSS_JOINED; | |
71 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
72 | ||
73 | spin_lock_irqsave(&wdev->event_lock, flags); | |
74 | list_add_tail(&ev->list, &wdev->event_list); | |
75 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 76 | queue_work(cfg80211_wq, &rdev->event_work); |
667503dd | 77 | } |
04a773ad JB |
78 | EXPORT_SYMBOL(cfg80211_ibss_joined); |
79 | ||
667503dd JB |
80 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
81 | struct net_device *dev, | |
fffd0934 JB |
82 | struct cfg80211_ibss_params *params, |
83 | struct cfg80211_cached_keys *connkeys) | |
04a773ad JB |
84 | { |
85 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
5336fa88 SW |
86 | struct ieee80211_channel *check_chan; |
87 | u8 radar_detect_width = 0; | |
04a773ad JB |
88 | int err; |
89 | ||
667503dd JB |
90 | ASSERT_WDEV_LOCK(wdev); |
91 | ||
04a773ad JB |
92 | if (wdev->ssid_len) |
93 | return -EALREADY; | |
94 | ||
93b05238 JB |
95 | if (!params->basic_rates) { |
96 | /* | |
97 | * If no rates were explicitly configured, | |
98 | * use the mandatory rate set for 11b or | |
99 | * 11a for maximum compatibility. | |
100 | */ | |
101 | struct ieee80211_supported_band *sband = | |
683b6d3b | 102 | rdev->wiphy.bands[params->chandef.chan->band]; |
93b05238 | 103 | int j; |
683b6d3b | 104 | u32 flag = params->chandef.chan->band == IEEE80211_BAND_5GHZ ? |
93b05238 JB |
105 | IEEE80211_RATE_MANDATORY_A : |
106 | IEEE80211_RATE_MANDATORY_B; | |
107 | ||
108 | for (j = 0; j < sband->n_bitrates; j++) { | |
109 | if (sband->bitrates[j].flags & flag) | |
110 | params->basic_rates |= BIT(j); | |
111 | } | |
112 | } | |
113 | ||
fffd0934 JB |
114 | if (WARN_ON(wdev->connect_keys)) |
115 | kfree(wdev->connect_keys); | |
116 | wdev->connect_keys = connkeys; | |
117 | ||
c30a3d38 | 118 | wdev->ibss_fixed = params->channel_fixed; |
5336fa88 | 119 | wdev->ibss_dfs_possible = params->userspace_handles_dfs; |
3d23e349 | 120 | #ifdef CONFIG_CFG80211_WEXT |
683b6d3b | 121 | wdev->wext.ibss.chandef = params->chandef; |
04a773ad | 122 | #endif |
5336fa88 SW |
123 | check_chan = params->chandef.chan; |
124 | if (params->userspace_handles_dfs) { | |
125 | /* use channel NULL to check for radar even if the current | |
126 | * channel is not a radar channel - it might decide to change | |
127 | * to DFS channel later. | |
128 | */ | |
129 | radar_detect_width = BIT(params->chandef.width); | |
130 | check_chan = NULL; | |
131 | } | |
132 | ||
133 | err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, | |
134 | check_chan, | |
135 | (params->channel_fixed && | |
136 | !radar_detect_width) | |
137 | ? CHAN_MODE_SHARED | |
138 | : CHAN_MODE_EXCLUSIVE, | |
139 | radar_detect_width); | |
e4e32459 | 140 | |
e4e32459 MK |
141 | if (err) { |
142 | wdev->connect_keys = NULL; | |
143 | return err; | |
144 | } | |
145 | ||
e35e4d28 | 146 | err = rdev_join_ibss(rdev, dev, params); |
fffd0934 JB |
147 | if (err) { |
148 | wdev->connect_keys = NULL; | |
04a773ad | 149 | return err; |
fffd0934 | 150 | } |
04a773ad JB |
151 | |
152 | memcpy(wdev->ssid, params->ssid, params->ssid_len); | |
153 | wdev->ssid_len = params->ssid_len; | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
667503dd JB |
158 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
159 | struct net_device *dev, | |
fffd0934 JB |
160 | struct cfg80211_ibss_params *params, |
161 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
162 | { |
163 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
164 | int err; | |
165 | ||
5fe231e8 JB |
166 | ASSERT_RTNL(); |
167 | ||
667503dd | 168 | wdev_lock(wdev); |
fffd0934 | 169 | err = __cfg80211_join_ibss(rdev, dev, params, connkeys); |
667503dd JB |
170 | wdev_unlock(wdev); |
171 | ||
172 | return err; | |
173 | } | |
174 | ||
175 | static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) | |
04a773ad JB |
176 | { |
177 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
178 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
179 | int i; | |
04a773ad | 180 | |
667503dd JB |
181 | ASSERT_WDEV_LOCK(wdev); |
182 | ||
fffd0934 JB |
183 | kfree(wdev->connect_keys); |
184 | wdev->connect_keys = NULL; | |
185 | ||
fa9ffc74 KP |
186 | rdev_set_qos_map(rdev, dev, NULL); |
187 | ||
fffd0934 JB |
188 | /* |
189 | * Delete all the keys ... pairwise keys can't really | |
190 | * exist any more anyway, but default keys might. | |
191 | */ | |
192 | if (rdev->ops->del_key) | |
193 | for (i = 0; i < 6; i++) | |
e35e4d28 | 194 | rdev_del_key(rdev, dev, i, false, NULL); |
fffd0934 | 195 | |
04a773ad JB |
196 | if (wdev->current_bss) { |
197 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 198 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
199 | } |
200 | ||
201 | wdev->current_bss = NULL; | |
202 | wdev->ssid_len = 0; | |
3d23e349 | 203 | #ifdef CONFIG_CFG80211_WEXT |
9d308429 | 204 | if (!nowext) |
cbe8fa9c | 205 | wdev->wext.ibss.ssid_len = 0; |
9d308429 | 206 | #endif |
04a773ad JB |
207 | } |
208 | ||
667503dd JB |
209 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
210 | { | |
211 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
212 | ||
213 | wdev_lock(wdev); | |
214 | __cfg80211_clear_ibss(dev, nowext); | |
215 | wdev_unlock(wdev); | |
216 | } | |
217 | ||
98d3a7ca JB |
218 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
219 | struct net_device *dev, bool nowext) | |
04a773ad | 220 | { |
78485475 | 221 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
04a773ad JB |
222 | int err; |
223 | ||
667503dd JB |
224 | ASSERT_WDEV_LOCK(wdev); |
225 | ||
78485475 JB |
226 | if (!wdev->ssid_len) |
227 | return -ENOLINK; | |
228 | ||
e35e4d28 | 229 | err = rdev_leave_ibss(rdev, dev); |
04a773ad JB |
230 | |
231 | if (err) | |
232 | return err; | |
233 | ||
667503dd | 234 | __cfg80211_clear_ibss(dev, nowext); |
04a773ad JB |
235 | |
236 | return 0; | |
237 | } | |
238 | ||
667503dd JB |
239 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
240 | struct net_device *dev, bool nowext) | |
241 | { | |
242 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
243 | int err; | |
244 | ||
245 | wdev_lock(wdev); | |
246 | err = __cfg80211_leave_ibss(rdev, dev, nowext); | |
247 | wdev_unlock(wdev); | |
248 | ||
249 | return err; | |
250 | } | |
251 | ||
3d23e349 | 252 | #ifdef CONFIG_CFG80211_WEXT |
fffd0934 JB |
253 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
254 | struct wireless_dev *wdev) | |
04a773ad | 255 | { |
fffd0934 | 256 | struct cfg80211_cached_keys *ck = NULL; |
04a773ad | 257 | enum ieee80211_band band; |
fffd0934 JB |
258 | int i, err; |
259 | ||
260 | ASSERT_WDEV_LOCK(wdev); | |
04a773ad | 261 | |
cbe8fa9c JB |
262 | if (!wdev->wext.ibss.beacon_interval) |
263 | wdev->wext.ibss.beacon_interval = 100; | |
8e30bc55 | 264 | |
04a773ad | 265 | /* try to find an IBSS channel if none requested ... */ |
683b6d3b | 266 | if (!wdev->wext.ibss.chandef.chan) { |
1fe4517c | 267 | struct ieee80211_channel *new_chan = NULL; |
683b6d3b | 268 | |
04a773ad JB |
269 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
270 | struct ieee80211_supported_band *sband; | |
271 | struct ieee80211_channel *chan; | |
272 | ||
273 | sband = rdev->wiphy.bands[band]; | |
274 | if (!sband) | |
275 | continue; | |
276 | ||
277 | for (i = 0; i < sband->n_channels; i++) { | |
278 | chan = &sband->channels[i]; | |
8fe02e16 | 279 | if (chan->flags & IEEE80211_CHAN_NO_IR) |
04a773ad JB |
280 | continue; |
281 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
282 | continue; | |
1fe4517c | 283 | new_chan = chan; |
04a773ad JB |
284 | break; |
285 | } | |
286 | ||
1fe4517c | 287 | if (new_chan) |
04a773ad JB |
288 | break; |
289 | } | |
290 | ||
1fe4517c | 291 | if (!new_chan) |
04a773ad | 292 | return -EINVAL; |
1fe4517c SW |
293 | |
294 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, new_chan, | |
295 | NL80211_CHAN_NO_HT); | |
04a773ad JB |
296 | } |
297 | ||
298 | /* don't join -- SSID is not there */ | |
cbe8fa9c | 299 | if (!wdev->wext.ibss.ssid_len) |
04a773ad JB |
300 | return 0; |
301 | ||
302 | if (!netif_running(wdev->netdev)) | |
303 | return 0; | |
304 | ||
3be61a38 | 305 | if (wdev->wext.keys) { |
fffd0934 | 306 | wdev->wext.keys->def = wdev->wext.default_key; |
3be61a38 JB |
307 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; |
308 | } | |
fffd0934 JB |
309 | |
310 | wdev->wext.ibss.privacy = wdev->wext.default_key != -1; | |
311 | ||
312 | if (wdev->wext.keys) { | |
313 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
314 | if (!ck) | |
315 | return -ENOMEM; | |
316 | for (i = 0; i < 6; i++) | |
317 | ck->params[i].key = ck->data[i]; | |
318 | } | |
319 | err = __cfg80211_join_ibss(rdev, wdev->netdev, | |
320 | &wdev->wext.ibss, ck); | |
321 | if (err) | |
322 | kfree(ck); | |
323 | ||
324 | return err; | |
04a773ad JB |
325 | } |
326 | ||
327 | int cfg80211_ibss_wext_siwfreq(struct net_device *dev, | |
328 | struct iw_request_info *info, | |
59bbb6f7 | 329 | struct iw_freq *wextfreq, char *extra) |
04a773ad JB |
330 | { |
331 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 JB |
332 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
333 | struct ieee80211_channel *chan = NULL; | |
334 | int err, freq; | |
04a773ad JB |
335 | |
336 | /* call only for ibss! */ | |
337 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
338 | return -EINVAL; | |
339 | ||
59bbb6f7 | 340 | if (!rdev->ops->join_ibss) |
04a773ad JB |
341 | return -EOPNOTSUPP; |
342 | ||
59bbb6f7 JB |
343 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
344 | if (freq < 0) | |
345 | return freq; | |
04a773ad | 346 | |
59bbb6f7 JB |
347 | if (freq) { |
348 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
349 | if (!chan) | |
350 | return -EINVAL; | |
8fe02e16 | 351 | if (chan->flags & IEEE80211_CHAN_NO_IR || |
59bbb6f7 JB |
352 | chan->flags & IEEE80211_CHAN_DISABLED) |
353 | return -EINVAL; | |
354 | } | |
04a773ad | 355 | |
683b6d3b | 356 | if (wdev->wext.ibss.chandef.chan == chan) |
04a773ad JB |
357 | return 0; |
358 | ||
667503dd JB |
359 | wdev_lock(wdev); |
360 | err = 0; | |
361 | if (wdev->ssid_len) | |
59bbb6f7 | 362 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
363 | wdev_unlock(wdev); |
364 | ||
365 | if (err) | |
366 | return err; | |
04a773ad JB |
367 | |
368 | if (chan) { | |
1fe4517c SW |
369 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, chan, |
370 | NL80211_CHAN_NO_HT); | |
cbe8fa9c | 371 | wdev->wext.ibss.channel_fixed = true; |
04a773ad JB |
372 | } else { |
373 | /* cfg80211_ibss_wext_join will pick one if needed */ | |
cbe8fa9c | 374 | wdev->wext.ibss.channel_fixed = false; |
04a773ad JB |
375 | } |
376 | ||
fffd0934 | 377 | wdev_lock(wdev); |
59bbb6f7 | 378 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
379 | wdev_unlock(wdev); |
380 | ||
381 | return err; | |
04a773ad | 382 | } |
04a773ad JB |
383 | |
384 | int cfg80211_ibss_wext_giwfreq(struct net_device *dev, | |
385 | struct iw_request_info *info, | |
386 | struct iw_freq *freq, char *extra) | |
387 | { | |
388 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
389 | struct ieee80211_channel *chan = NULL; | |
390 | ||
391 | /* call only for ibss! */ | |
392 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
393 | return -EINVAL; | |
394 | ||
667503dd | 395 | wdev_lock(wdev); |
04a773ad | 396 | if (wdev->current_bss) |
19957bb3 | 397 | chan = wdev->current_bss->pub.channel; |
683b6d3b JB |
398 | else if (wdev->wext.ibss.chandef.chan) |
399 | chan = wdev->wext.ibss.chandef.chan; | |
667503dd | 400 | wdev_unlock(wdev); |
04a773ad JB |
401 | |
402 | if (chan) { | |
403 | freq->m = chan->center_freq; | |
404 | freq->e = 6; | |
405 | return 0; | |
406 | } | |
407 | ||
408 | /* no channel if not joining */ | |
409 | return -EINVAL; | |
410 | } | |
04a773ad JB |
411 | |
412 | int cfg80211_ibss_wext_siwessid(struct net_device *dev, | |
413 | struct iw_request_info *info, | |
414 | struct iw_point *data, char *ssid) | |
415 | { | |
416 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 417 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
418 | size_t len = data->length; |
419 | int err; | |
420 | ||
421 | /* call only for ibss! */ | |
422 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
423 | return -EINVAL; | |
424 | ||
59bbb6f7 | 425 | if (!rdev->ops->join_ibss) |
04a773ad JB |
426 | return -EOPNOTSUPP; |
427 | ||
667503dd JB |
428 | wdev_lock(wdev); |
429 | err = 0; | |
430 | if (wdev->ssid_len) | |
59bbb6f7 | 431 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
432 | wdev_unlock(wdev); |
433 | ||
434 | if (err) | |
435 | return err; | |
04a773ad JB |
436 | |
437 | /* iwconfig uses nul termination in SSID.. */ | |
438 | if (len > 0 && ssid[len - 1] == '\0') | |
439 | len--; | |
440 | ||
cbe8fa9c JB |
441 | wdev->wext.ibss.ssid = wdev->ssid; |
442 | memcpy(wdev->wext.ibss.ssid, ssid, len); | |
443 | wdev->wext.ibss.ssid_len = len; | |
04a773ad | 444 | |
fffd0934 | 445 | wdev_lock(wdev); |
59bbb6f7 | 446 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
447 | wdev_unlock(wdev); |
448 | ||
449 | return err; | |
04a773ad | 450 | } |
04a773ad JB |
451 | |
452 | int cfg80211_ibss_wext_giwessid(struct net_device *dev, | |
453 | struct iw_request_info *info, | |
454 | struct iw_point *data, char *ssid) | |
455 | { | |
456 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
457 | ||
458 | /* call only for ibss! */ | |
459 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
460 | return -EINVAL; | |
461 | ||
462 | data->flags = 0; | |
463 | ||
667503dd | 464 | wdev_lock(wdev); |
04a773ad JB |
465 | if (wdev->ssid_len) { |
466 | data->flags = 1; | |
467 | data->length = wdev->ssid_len; | |
468 | memcpy(ssid, wdev->ssid, data->length); | |
cbe8fa9c | 469 | } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { |
04a773ad | 470 | data->flags = 1; |
cbe8fa9c JB |
471 | data->length = wdev->wext.ibss.ssid_len; |
472 | memcpy(ssid, wdev->wext.ibss.ssid, data->length); | |
04a773ad | 473 | } |
667503dd | 474 | wdev_unlock(wdev); |
04a773ad JB |
475 | |
476 | return 0; | |
477 | } | |
04a773ad JB |
478 | |
479 | int cfg80211_ibss_wext_siwap(struct net_device *dev, | |
480 | struct iw_request_info *info, | |
481 | struct sockaddr *ap_addr, char *extra) | |
482 | { | |
483 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 484 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
485 | u8 *bssid = ap_addr->sa_data; |
486 | int err; | |
487 | ||
488 | /* call only for ibss! */ | |
489 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
490 | return -EINVAL; | |
491 | ||
59bbb6f7 | 492 | if (!rdev->ops->join_ibss) |
04a773ad JB |
493 | return -EOPNOTSUPP; |
494 | ||
495 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
496 | return -EINVAL; | |
497 | ||
498 | /* automatic mode */ | |
499 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
500 | bssid = NULL; | |
501 | ||
502 | /* both automatic */ | |
cbe8fa9c | 503 | if (!bssid && !wdev->wext.ibss.bssid) |
04a773ad JB |
504 | return 0; |
505 | ||
506 | /* fixed already - and no change */ | |
cbe8fa9c | 507 | if (wdev->wext.ibss.bssid && bssid && |
ac422d3c | 508 | ether_addr_equal(bssid, wdev->wext.ibss.bssid)) |
04a773ad JB |
509 | return 0; |
510 | ||
667503dd JB |
511 | wdev_lock(wdev); |
512 | err = 0; | |
513 | if (wdev->ssid_len) | |
59bbb6f7 | 514 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
515 | wdev_unlock(wdev); |
516 | ||
517 | if (err) | |
518 | return err; | |
04a773ad JB |
519 | |
520 | if (bssid) { | |
cbe8fa9c JB |
521 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); |
522 | wdev->wext.ibss.bssid = wdev->wext.bssid; | |
04a773ad | 523 | } else |
cbe8fa9c | 524 | wdev->wext.ibss.bssid = NULL; |
04a773ad | 525 | |
fffd0934 | 526 | wdev_lock(wdev); |
59bbb6f7 | 527 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
528 | wdev_unlock(wdev); |
529 | ||
530 | return err; | |
04a773ad | 531 | } |
04a773ad JB |
532 | |
533 | int cfg80211_ibss_wext_giwap(struct net_device *dev, | |
534 | struct iw_request_info *info, | |
535 | struct sockaddr *ap_addr, char *extra) | |
536 | { | |
537 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
538 | ||
539 | /* call only for ibss! */ | |
540 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
541 | return -EINVAL; | |
542 | ||
543 | ap_addr->sa_family = ARPHRD_ETHER; | |
544 | ||
667503dd | 545 | wdev_lock(wdev); |
7ebbe6bd | 546 | if (wdev->current_bss) |
19957bb3 | 547 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
80e5b06a | 548 | else if (wdev->wext.ibss.bssid) |
cbe8fa9c | 549 | memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); |
80e5b06a ZY |
550 | else |
551 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
552 | ||
667503dd JB |
553 | wdev_unlock(wdev); |
554 | ||
04a773ad JB |
555 | return 0; |
556 | } | |
04a773ad | 557 | #endif |