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 | ||
186 | /* | |
187 | * Delete all the keys ... pairwise keys can't really | |
188 | * exist any more anyway, but default keys might. | |
189 | */ | |
190 | if (rdev->ops->del_key) | |
191 | for (i = 0; i < 6; i++) | |
e35e4d28 | 192 | rdev_del_key(rdev, dev, i, false, NULL); |
fffd0934 | 193 | |
04a773ad JB |
194 | if (wdev->current_bss) { |
195 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 196 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
197 | } |
198 | ||
199 | wdev->current_bss = NULL; | |
200 | wdev->ssid_len = 0; | |
3d23e349 | 201 | #ifdef CONFIG_CFG80211_WEXT |
9d308429 | 202 | if (!nowext) |
cbe8fa9c | 203 | wdev->wext.ibss.ssid_len = 0; |
9d308429 | 204 | #endif |
04a773ad JB |
205 | } |
206 | ||
667503dd JB |
207 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
208 | { | |
209 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
210 | ||
211 | wdev_lock(wdev); | |
212 | __cfg80211_clear_ibss(dev, nowext); | |
213 | wdev_unlock(wdev); | |
214 | } | |
215 | ||
98d3a7ca JB |
216 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
217 | struct net_device *dev, bool nowext) | |
04a773ad | 218 | { |
78485475 | 219 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
04a773ad JB |
220 | int err; |
221 | ||
667503dd JB |
222 | ASSERT_WDEV_LOCK(wdev); |
223 | ||
78485475 JB |
224 | if (!wdev->ssid_len) |
225 | return -ENOLINK; | |
226 | ||
e35e4d28 | 227 | err = rdev_leave_ibss(rdev, dev); |
04a773ad JB |
228 | |
229 | if (err) | |
230 | return err; | |
231 | ||
667503dd | 232 | __cfg80211_clear_ibss(dev, nowext); |
04a773ad JB |
233 | |
234 | return 0; | |
235 | } | |
236 | ||
667503dd JB |
237 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
238 | struct net_device *dev, bool nowext) | |
239 | { | |
240 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
241 | int err; | |
242 | ||
243 | wdev_lock(wdev); | |
244 | err = __cfg80211_leave_ibss(rdev, dev, nowext); | |
245 | wdev_unlock(wdev); | |
246 | ||
247 | return err; | |
248 | } | |
249 | ||
3d23e349 | 250 | #ifdef CONFIG_CFG80211_WEXT |
fffd0934 JB |
251 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
252 | struct wireless_dev *wdev) | |
04a773ad | 253 | { |
fffd0934 | 254 | struct cfg80211_cached_keys *ck = NULL; |
04a773ad | 255 | enum ieee80211_band band; |
fffd0934 JB |
256 | int i, err; |
257 | ||
258 | ASSERT_WDEV_LOCK(wdev); | |
04a773ad | 259 | |
cbe8fa9c JB |
260 | if (!wdev->wext.ibss.beacon_interval) |
261 | wdev->wext.ibss.beacon_interval = 100; | |
8e30bc55 | 262 | |
04a773ad | 263 | /* try to find an IBSS channel if none requested ... */ |
683b6d3b | 264 | if (!wdev->wext.ibss.chandef.chan) { |
3d9d1d66 | 265 | wdev->wext.ibss.chandef.width = NL80211_CHAN_WIDTH_20_NOHT; |
683b6d3b | 266 | |
04a773ad JB |
267 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
268 | struct ieee80211_supported_band *sband; | |
269 | struct ieee80211_channel *chan; | |
270 | ||
271 | sband = rdev->wiphy.bands[band]; | |
272 | if (!sband) | |
273 | continue; | |
274 | ||
275 | for (i = 0; i < sband->n_channels; i++) { | |
276 | chan = &sband->channels[i]; | |
277 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
278 | continue; | |
279 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
280 | continue; | |
683b6d3b | 281 | wdev->wext.ibss.chandef.chan = chan; |
f478f33a BR |
282 | wdev->wext.ibss.chandef.center_freq1 = |
283 | chan->center_freq; | |
04a773ad JB |
284 | break; |
285 | } | |
286 | ||
683b6d3b | 287 | if (wdev->wext.ibss.chandef.chan) |
04a773ad JB |
288 | break; |
289 | } | |
290 | ||
683b6d3b | 291 | if (!wdev->wext.ibss.chandef.chan) |
04a773ad JB |
292 | return -EINVAL; |
293 | } | |
294 | ||
295 | /* don't join -- SSID is not there */ | |
cbe8fa9c | 296 | if (!wdev->wext.ibss.ssid_len) |
04a773ad JB |
297 | return 0; |
298 | ||
299 | if (!netif_running(wdev->netdev)) | |
300 | return 0; | |
301 | ||
3be61a38 | 302 | if (wdev->wext.keys) { |
fffd0934 | 303 | wdev->wext.keys->def = wdev->wext.default_key; |
3be61a38 JB |
304 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; |
305 | } | |
fffd0934 JB |
306 | |
307 | wdev->wext.ibss.privacy = wdev->wext.default_key != -1; | |
308 | ||
309 | if (wdev->wext.keys) { | |
310 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
311 | if (!ck) | |
312 | return -ENOMEM; | |
313 | for (i = 0; i < 6; i++) | |
314 | ck->params[i].key = ck->data[i]; | |
315 | } | |
316 | err = __cfg80211_join_ibss(rdev, wdev->netdev, | |
317 | &wdev->wext.ibss, ck); | |
318 | if (err) | |
319 | kfree(ck); | |
320 | ||
321 | return err; | |
04a773ad JB |
322 | } |
323 | ||
324 | int cfg80211_ibss_wext_siwfreq(struct net_device *dev, | |
325 | struct iw_request_info *info, | |
59bbb6f7 | 326 | struct iw_freq *wextfreq, char *extra) |
04a773ad JB |
327 | { |
328 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 JB |
329 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
330 | struct ieee80211_channel *chan = NULL; | |
331 | int err, freq; | |
04a773ad JB |
332 | |
333 | /* call only for ibss! */ | |
334 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
335 | return -EINVAL; | |
336 | ||
59bbb6f7 | 337 | if (!rdev->ops->join_ibss) |
04a773ad JB |
338 | return -EOPNOTSUPP; |
339 | ||
59bbb6f7 JB |
340 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
341 | if (freq < 0) | |
342 | return freq; | |
04a773ad | 343 | |
59bbb6f7 JB |
344 | if (freq) { |
345 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
346 | if (!chan) | |
347 | return -EINVAL; | |
348 | if (chan->flags & IEEE80211_CHAN_NO_IBSS || | |
349 | chan->flags & IEEE80211_CHAN_DISABLED) | |
350 | return -EINVAL; | |
351 | } | |
04a773ad | 352 | |
683b6d3b | 353 | if (wdev->wext.ibss.chandef.chan == chan) |
04a773ad JB |
354 | return 0; |
355 | ||
667503dd JB |
356 | wdev_lock(wdev); |
357 | err = 0; | |
358 | if (wdev->ssid_len) | |
59bbb6f7 | 359 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
360 | wdev_unlock(wdev); |
361 | ||
362 | if (err) | |
363 | return err; | |
04a773ad JB |
364 | |
365 | if (chan) { | |
683b6d3b | 366 | wdev->wext.ibss.chandef.chan = chan; |
3d9d1d66 | 367 | wdev->wext.ibss.chandef.width = NL80211_CHAN_WIDTH_20_NOHT; |
f478f33a | 368 | wdev->wext.ibss.chandef.center_freq1 = freq; |
cbe8fa9c | 369 | wdev->wext.ibss.channel_fixed = true; |
04a773ad JB |
370 | } else { |
371 | /* cfg80211_ibss_wext_join will pick one if needed */ | |
cbe8fa9c | 372 | wdev->wext.ibss.channel_fixed = false; |
04a773ad JB |
373 | } |
374 | ||
fffd0934 | 375 | wdev_lock(wdev); |
59bbb6f7 | 376 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
377 | wdev_unlock(wdev); |
378 | ||
379 | return err; | |
04a773ad | 380 | } |
04a773ad JB |
381 | |
382 | int cfg80211_ibss_wext_giwfreq(struct net_device *dev, | |
383 | struct iw_request_info *info, | |
384 | struct iw_freq *freq, char *extra) | |
385 | { | |
386 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
387 | struct ieee80211_channel *chan = NULL; | |
388 | ||
389 | /* call only for ibss! */ | |
390 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
391 | return -EINVAL; | |
392 | ||
667503dd | 393 | wdev_lock(wdev); |
04a773ad | 394 | if (wdev->current_bss) |
19957bb3 | 395 | chan = wdev->current_bss->pub.channel; |
683b6d3b JB |
396 | else if (wdev->wext.ibss.chandef.chan) |
397 | chan = wdev->wext.ibss.chandef.chan; | |
667503dd | 398 | wdev_unlock(wdev); |
04a773ad JB |
399 | |
400 | if (chan) { | |
401 | freq->m = chan->center_freq; | |
402 | freq->e = 6; | |
403 | return 0; | |
404 | } | |
405 | ||
406 | /* no channel if not joining */ | |
407 | return -EINVAL; | |
408 | } | |
04a773ad JB |
409 | |
410 | int cfg80211_ibss_wext_siwessid(struct net_device *dev, | |
411 | struct iw_request_info *info, | |
412 | struct iw_point *data, char *ssid) | |
413 | { | |
414 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 415 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
416 | size_t len = data->length; |
417 | int err; | |
418 | ||
419 | /* call only for ibss! */ | |
420 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
421 | return -EINVAL; | |
422 | ||
59bbb6f7 | 423 | if (!rdev->ops->join_ibss) |
04a773ad JB |
424 | return -EOPNOTSUPP; |
425 | ||
667503dd JB |
426 | wdev_lock(wdev); |
427 | err = 0; | |
428 | if (wdev->ssid_len) | |
59bbb6f7 | 429 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
430 | wdev_unlock(wdev); |
431 | ||
432 | if (err) | |
433 | return err; | |
04a773ad JB |
434 | |
435 | /* iwconfig uses nul termination in SSID.. */ | |
436 | if (len > 0 && ssid[len - 1] == '\0') | |
437 | len--; | |
438 | ||
cbe8fa9c JB |
439 | wdev->wext.ibss.ssid = wdev->ssid; |
440 | memcpy(wdev->wext.ibss.ssid, ssid, len); | |
441 | wdev->wext.ibss.ssid_len = len; | |
04a773ad | 442 | |
fffd0934 | 443 | wdev_lock(wdev); |
59bbb6f7 | 444 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
445 | wdev_unlock(wdev); |
446 | ||
447 | return err; | |
04a773ad | 448 | } |
04a773ad JB |
449 | |
450 | int cfg80211_ibss_wext_giwessid(struct net_device *dev, | |
451 | struct iw_request_info *info, | |
452 | struct iw_point *data, char *ssid) | |
453 | { | |
454 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
455 | ||
456 | /* call only for ibss! */ | |
457 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
458 | return -EINVAL; | |
459 | ||
460 | data->flags = 0; | |
461 | ||
667503dd | 462 | wdev_lock(wdev); |
04a773ad JB |
463 | if (wdev->ssid_len) { |
464 | data->flags = 1; | |
465 | data->length = wdev->ssid_len; | |
466 | memcpy(ssid, wdev->ssid, data->length); | |
cbe8fa9c | 467 | } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { |
04a773ad | 468 | data->flags = 1; |
cbe8fa9c JB |
469 | data->length = wdev->wext.ibss.ssid_len; |
470 | memcpy(ssid, wdev->wext.ibss.ssid, data->length); | |
04a773ad | 471 | } |
667503dd | 472 | wdev_unlock(wdev); |
04a773ad JB |
473 | |
474 | return 0; | |
475 | } | |
04a773ad JB |
476 | |
477 | int cfg80211_ibss_wext_siwap(struct net_device *dev, | |
478 | struct iw_request_info *info, | |
479 | struct sockaddr *ap_addr, char *extra) | |
480 | { | |
481 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 482 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
04a773ad JB |
483 | u8 *bssid = ap_addr->sa_data; |
484 | int err; | |
485 | ||
486 | /* call only for ibss! */ | |
487 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
488 | return -EINVAL; | |
489 | ||
59bbb6f7 | 490 | if (!rdev->ops->join_ibss) |
04a773ad JB |
491 | return -EOPNOTSUPP; |
492 | ||
493 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
494 | return -EINVAL; | |
495 | ||
496 | /* automatic mode */ | |
497 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
498 | bssid = NULL; | |
499 | ||
500 | /* both automatic */ | |
cbe8fa9c | 501 | if (!bssid && !wdev->wext.ibss.bssid) |
04a773ad JB |
502 | return 0; |
503 | ||
504 | /* fixed already - and no change */ | |
cbe8fa9c | 505 | if (wdev->wext.ibss.bssid && bssid && |
ac422d3c | 506 | ether_addr_equal(bssid, wdev->wext.ibss.bssid)) |
04a773ad JB |
507 | return 0; |
508 | ||
667503dd JB |
509 | wdev_lock(wdev); |
510 | err = 0; | |
511 | if (wdev->ssid_len) | |
59bbb6f7 | 512 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
513 | wdev_unlock(wdev); |
514 | ||
515 | if (err) | |
516 | return err; | |
04a773ad JB |
517 | |
518 | if (bssid) { | |
cbe8fa9c JB |
519 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); |
520 | wdev->wext.ibss.bssid = wdev->wext.bssid; | |
04a773ad | 521 | } else |
cbe8fa9c | 522 | wdev->wext.ibss.bssid = NULL; |
04a773ad | 523 | |
fffd0934 | 524 | wdev_lock(wdev); |
59bbb6f7 | 525 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
526 | wdev_unlock(wdev); |
527 | ||
528 | return err; | |
04a773ad | 529 | } |
04a773ad JB |
530 | |
531 | int cfg80211_ibss_wext_giwap(struct net_device *dev, | |
532 | struct iw_request_info *info, | |
533 | struct sockaddr *ap_addr, char *extra) | |
534 | { | |
535 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
536 | ||
537 | /* call only for ibss! */ | |
538 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
539 | return -EINVAL; | |
540 | ||
541 | ap_addr->sa_family = ARPHRD_ETHER; | |
542 | ||
667503dd | 543 | wdev_lock(wdev); |
7ebbe6bd | 544 | if (wdev->current_bss) |
19957bb3 | 545 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
80e5b06a | 546 | else if (wdev->wext.ibss.bssid) |
cbe8fa9c | 547 | memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); |
80e5b06a ZY |
548 | else |
549 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
550 | ||
667503dd JB |
551 | wdev_unlock(wdev); |
552 | ||
04a773ad JB |
553 | return 0; |
554 | } | |
04a773ad | 555 | #endif |