Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
04a773ad JB |
2 | /* |
3 | * Some IBSS support code for cfg80211. | |
4 | * | |
5 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> | |
6 | */ | |
7 | ||
8 | #include <linux/etherdevice.h> | |
9 | #include <linux/if_arp.h> | |
5a0e3ad6 | 10 | #include <linux/slab.h> |
bc3b2d7f | 11 | #include <linux/export.h> |
04a773ad | 12 | #include <net/cfg80211.h> |
0e82ffe3 | 13 | #include "wext-compat.h" |
04a773ad | 14 | #include "nl80211.h" |
e35e4d28 | 15 | #include "rdev-ops.h" |
04a773ad JB |
16 | |
17 | ||
fe94f3a4 AQ |
18 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, |
19 | struct ieee80211_channel *channel) | |
04a773ad JB |
20 | { |
21 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
22 | struct cfg80211_bss *bss; | |
3d23e349 | 23 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
24 | union iwreq_data wrqu; |
25 | #endif | |
26 | ||
27 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
28 | return; | |
29 | ||
f7969969 | 30 | if (!wdev->ssid_len) |
04a773ad JB |
31 | return; |
32 | ||
fe94f3a4 | 33 | bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, NULL, 0, |
6eb18137 | 34 | IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY); |
04a773ad JB |
35 | |
36 | if (WARN_ON(!bss)) | |
37 | return; | |
38 | ||
39 | if (wdev->current_bss) { | |
40 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 41 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
42 | } |
43 | ||
19957bb3 JB |
44 | cfg80211_hold_bss(bss_from_pub(bss)); |
45 | wdev->current_bss = bss_from_pub(bss); | |
04a773ad | 46 | |
b8676221 DS |
47 | if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP)) |
48 | cfg80211_upload_connect_keys(wdev); | |
fffd0934 | 49 | |
f26cbf40 | 50 | nl80211_send_ibss_bssid(wiphy_to_rdev(wdev->wiphy), dev, bssid, |
667503dd | 51 | GFP_KERNEL); |
3d23e349 | 52 | #ifdef CONFIG_CFG80211_WEXT |
04a773ad JB |
53 | memset(&wrqu, 0, sizeof(wrqu)); |
54 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
55 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
56 | #endif | |
57 | } | |
667503dd | 58 | |
fe94f3a4 AQ |
59 | void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, |
60 | struct ieee80211_channel *channel, gfp_t gfp) | |
667503dd JB |
61 | { |
62 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 63 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
667503dd JB |
64 | struct cfg80211_event *ev; |
65 | unsigned long flags; | |
66 | ||
fe94f3a4 AQ |
67 | trace_cfg80211_ibss_joined(dev, bssid, channel); |
68 | ||
69 | if (WARN_ON(!channel)) | |
70 | return; | |
4ee3e063 | 71 | |
667503dd JB |
72 | ev = kzalloc(sizeof(*ev), gfp); |
73 | if (!ev) | |
74 | return; | |
75 | ||
76 | ev->type = EVENT_IBSS_JOINED; | |
fe94f3a4 AQ |
77 | memcpy(ev->ij.bssid, bssid, ETH_ALEN); |
78 | ev->ij.channel = channel; | |
667503dd JB |
79 | |
80 | spin_lock_irqsave(&wdev->event_lock, flags); | |
81 | list_add_tail(&ev->list, &wdev->event_list); | |
82 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 83 | queue_work(cfg80211_wq, &rdev->event_work); |
667503dd | 84 | } |
04a773ad JB |
85 | EXPORT_SYMBOL(cfg80211_ibss_joined); |
86 | ||
f8d16d3e DK |
87 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
88 | struct net_device *dev, | |
89 | struct cfg80211_ibss_params *params, | |
90 | struct cfg80211_cached_keys *connkeys) | |
04a773ad JB |
91 | { |
92 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
93 | int err; | |
94 | ||
f8d16d3e | 95 | ASSERT_RTNL(); |
667503dd JB |
96 | ASSERT_WDEV_LOCK(wdev); |
97 | ||
04a773ad JB |
98 | if (wdev->ssid_len) |
99 | return -EALREADY; | |
100 | ||
93b05238 JB |
101 | if (!params->basic_rates) { |
102 | /* | |
103 | * If no rates were explicitly configured, | |
104 | * use the mandatory rate set for 11b or | |
105 | * 11a for maximum compatibility. | |
106 | */ | |
5ea4e780 AS |
107 | struct ieee80211_supported_band *sband; |
108 | enum nl80211_band band; | |
109 | u32 flag; | |
93b05238 | 110 | int j; |
93b05238 | 111 | |
5ea4e780 AS |
112 | band = params->chandef.chan->band; |
113 | if (band == NL80211_BAND_5GHZ || | |
114 | band == NL80211_BAND_6GHZ) | |
115 | flag = IEEE80211_RATE_MANDATORY_A; | |
116 | else | |
117 | flag = IEEE80211_RATE_MANDATORY_B; | |
118 | ||
119 | sband = rdev->wiphy.bands[band]; | |
93b05238 JB |
120 | for (j = 0; j < sband->n_bitrates; j++) { |
121 | if (sband->bitrates[j].flags & flag) | |
122 | params->basic_rates |= BIT(j); | |
123 | } | |
124 | } | |
125 | ||
f1c1f17a JB |
126 | if (WARN_ON(connkeys && connkeys->def < 0)) |
127 | return -EINVAL; | |
128 | ||
fffd0934 | 129 | if (WARN_ON(wdev->connect_keys)) |
453431a5 | 130 | kfree_sensitive(wdev->connect_keys); |
fffd0934 JB |
131 | wdev->connect_keys = connkeys; |
132 | ||
c30a3d38 | 133 | wdev->ibss_fixed = params->channel_fixed; |
5336fa88 | 134 | wdev->ibss_dfs_possible = params->userspace_handles_dfs; |
9e0e2961 | 135 | wdev->chandef = params->chandef; |
9ae3b172 TM |
136 | if (connkeys) { |
137 | params->wep_keys = connkeys->params; | |
138 | params->wep_tx_key = connkeys->def; | |
139 | } | |
140 | ||
3d23e349 | 141 | #ifdef CONFIG_CFG80211_WEXT |
683b6d3b | 142 | wdev->wext.ibss.chandef = params->chandef; |
04a773ad | 143 | #endif |
e35e4d28 | 144 | err = rdev_join_ibss(rdev, dev, params); |
fffd0934 JB |
145 | if (err) { |
146 | wdev->connect_keys = NULL; | |
04a773ad | 147 | return err; |
fffd0934 | 148 | } |
04a773ad JB |
149 | |
150 | memcpy(wdev->ssid, params->ssid, params->ssid_len); | |
151 | wdev->ssid_len = params->ssid_len; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
667503dd | 156 | static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
04a773ad JB |
157 | { |
158 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 159 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
fffd0934 | 160 | int i; |
04a773ad | 161 | |
667503dd JB |
162 | ASSERT_WDEV_LOCK(wdev); |
163 | ||
453431a5 | 164 | kfree_sensitive(wdev->connect_keys); |
fffd0934 JB |
165 | wdev->connect_keys = NULL; |
166 | ||
fa9ffc74 KP |
167 | rdev_set_qos_map(rdev, dev, NULL); |
168 | ||
fffd0934 JB |
169 | /* |
170 | * Delete all the keys ... pairwise keys can't really | |
171 | * exist any more anyway, but default keys might. | |
172 | */ | |
173 | if (rdev->ops->del_key) | |
174 | for (i = 0; i < 6; i++) | |
e35e4d28 | 175 | rdev_del_key(rdev, dev, i, false, NULL); |
fffd0934 | 176 | |
04a773ad JB |
177 | if (wdev->current_bss) { |
178 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 179 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
180 | } |
181 | ||
182 | wdev->current_bss = NULL; | |
183 | wdev->ssid_len = 0; | |
9e0e2961 | 184 | memset(&wdev->chandef, 0, sizeof(wdev->chandef)); |
3d23e349 | 185 | #ifdef CONFIG_CFG80211_WEXT |
9d308429 | 186 | if (!nowext) |
cbe8fa9c | 187 | wdev->wext.ibss.ssid_len = 0; |
9d308429 | 188 | #endif |
b35a51c7 | 189 | cfg80211_sched_dfs_chan_update(rdev); |
04a773ad JB |
190 | } |
191 | ||
667503dd JB |
192 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
193 | { | |
194 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
195 | ||
196 | wdev_lock(wdev); | |
197 | __cfg80211_clear_ibss(dev, nowext); | |
198 | wdev_unlock(wdev); | |
199 | } | |
200 | ||
98d3a7ca JB |
201 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
202 | struct net_device *dev, bool nowext) | |
04a773ad | 203 | { |
78485475 | 204 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
04a773ad JB |
205 | int err; |
206 | ||
667503dd JB |
207 | ASSERT_WDEV_LOCK(wdev); |
208 | ||
78485475 JB |
209 | if (!wdev->ssid_len) |
210 | return -ENOLINK; | |
211 | ||
e35e4d28 | 212 | err = rdev_leave_ibss(rdev, dev); |
04a773ad JB |
213 | |
214 | if (err) | |
215 | return err; | |
216 | ||
f8d16d3e | 217 | wdev->conn_owner_nlportid = 0; |
667503dd | 218 | __cfg80211_clear_ibss(dev, nowext); |
04a773ad JB |
219 | |
220 | return 0; | |
221 | } | |
222 | ||
667503dd JB |
223 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
224 | struct net_device *dev, bool nowext) | |
225 | { | |
226 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
227 | int err; | |
228 | ||
229 | wdev_lock(wdev); | |
230 | err = __cfg80211_leave_ibss(rdev, dev, nowext); | |
231 | wdev_unlock(wdev); | |
232 | ||
233 | return err; | |
234 | } | |
235 | ||
3d23e349 | 236 | #ifdef CONFIG_CFG80211_WEXT |
fffd0934 JB |
237 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
238 | struct wireless_dev *wdev) | |
04a773ad | 239 | { |
fffd0934 | 240 | struct cfg80211_cached_keys *ck = NULL; |
57fbcce3 | 241 | enum nl80211_band band; |
fffd0934 JB |
242 | int i, err; |
243 | ||
244 | ASSERT_WDEV_LOCK(wdev); | |
04a773ad | 245 | |
cbe8fa9c JB |
246 | if (!wdev->wext.ibss.beacon_interval) |
247 | wdev->wext.ibss.beacon_interval = 100; | |
8e30bc55 | 248 | |
04a773ad | 249 | /* try to find an IBSS channel if none requested ... */ |
683b6d3b | 250 | if (!wdev->wext.ibss.chandef.chan) { |
1fe4517c | 251 | struct ieee80211_channel *new_chan = NULL; |
683b6d3b | 252 | |
57fbcce3 | 253 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
04a773ad JB |
254 | struct ieee80211_supported_band *sband; |
255 | struct ieee80211_channel *chan; | |
256 | ||
257 | sband = rdev->wiphy.bands[band]; | |
258 | if (!sband) | |
259 | continue; | |
260 | ||
261 | for (i = 0; i < sband->n_channels; i++) { | |
262 | chan = &sband->channels[i]; | |
8fe02e16 | 263 | if (chan->flags & IEEE80211_CHAN_NO_IR) |
04a773ad JB |
264 | continue; |
265 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
266 | continue; | |
1fe4517c | 267 | new_chan = chan; |
04a773ad JB |
268 | break; |
269 | } | |
270 | ||
1fe4517c | 271 | if (new_chan) |
04a773ad JB |
272 | break; |
273 | } | |
274 | ||
1fe4517c | 275 | if (!new_chan) |
04a773ad | 276 | return -EINVAL; |
1fe4517c SW |
277 | |
278 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, new_chan, | |
279 | NL80211_CHAN_NO_HT); | |
04a773ad JB |
280 | } |
281 | ||
282 | /* don't join -- SSID is not there */ | |
cbe8fa9c | 283 | if (!wdev->wext.ibss.ssid_len) |
04a773ad JB |
284 | return 0; |
285 | ||
286 | if (!netif_running(wdev->netdev)) | |
287 | return 0; | |
288 | ||
89b706fb | 289 | if (wdev->wext.keys) |
fffd0934 JB |
290 | wdev->wext.keys->def = wdev->wext.default_key; |
291 | ||
292 | wdev->wext.ibss.privacy = wdev->wext.default_key != -1; | |
293 | ||
f1c1f17a | 294 | if (wdev->wext.keys && wdev->wext.keys->def != -1) { |
fffd0934 JB |
295 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); |
296 | if (!ck) | |
297 | return -ENOMEM; | |
b8676221 | 298 | for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) |
fffd0934 JB |
299 | ck->params[i].key = ck->data[i]; |
300 | } | |
301 | err = __cfg80211_join_ibss(rdev, wdev->netdev, | |
302 | &wdev->wext.ibss, ck); | |
303 | if (err) | |
304 | kfree(ck); | |
305 | ||
306 | return err; | |
04a773ad JB |
307 | } |
308 | ||
309 | int cfg80211_ibss_wext_siwfreq(struct net_device *dev, | |
310 | struct iw_request_info *info, | |
59bbb6f7 | 311 | struct iw_freq *wextfreq, char *extra) |
04a773ad JB |
312 | { |
313 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 314 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
59bbb6f7 JB |
315 | struct ieee80211_channel *chan = NULL; |
316 | int err, freq; | |
04a773ad JB |
317 | |
318 | /* call only for ibss! */ | |
319 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
320 | return -EINVAL; | |
321 | ||
59bbb6f7 | 322 | if (!rdev->ops->join_ibss) |
04a773ad JB |
323 | return -EOPNOTSUPP; |
324 | ||
96998e3a | 325 | freq = cfg80211_wext_freq(wextfreq); |
59bbb6f7 JB |
326 | if (freq < 0) |
327 | return freq; | |
04a773ad | 328 | |
59bbb6f7 JB |
329 | if (freq) { |
330 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
331 | if (!chan) | |
332 | return -EINVAL; | |
8fe02e16 | 333 | if (chan->flags & IEEE80211_CHAN_NO_IR || |
59bbb6f7 JB |
334 | chan->flags & IEEE80211_CHAN_DISABLED) |
335 | return -EINVAL; | |
336 | } | |
04a773ad | 337 | |
683b6d3b | 338 | if (wdev->wext.ibss.chandef.chan == chan) |
04a773ad JB |
339 | return 0; |
340 | ||
667503dd JB |
341 | wdev_lock(wdev); |
342 | err = 0; | |
343 | if (wdev->ssid_len) | |
59bbb6f7 | 344 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
345 | wdev_unlock(wdev); |
346 | ||
347 | if (err) | |
348 | return err; | |
04a773ad JB |
349 | |
350 | if (chan) { | |
1fe4517c SW |
351 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, chan, |
352 | NL80211_CHAN_NO_HT); | |
cbe8fa9c | 353 | wdev->wext.ibss.channel_fixed = true; |
04a773ad JB |
354 | } else { |
355 | /* cfg80211_ibss_wext_join will pick one if needed */ | |
cbe8fa9c | 356 | wdev->wext.ibss.channel_fixed = false; |
04a773ad JB |
357 | } |
358 | ||
fffd0934 | 359 | wdev_lock(wdev); |
59bbb6f7 | 360 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
361 | wdev_unlock(wdev); |
362 | ||
363 | return err; | |
04a773ad | 364 | } |
04a773ad JB |
365 | |
366 | int cfg80211_ibss_wext_giwfreq(struct net_device *dev, | |
367 | struct iw_request_info *info, | |
368 | struct iw_freq *freq, char *extra) | |
369 | { | |
370 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
371 | struct ieee80211_channel *chan = NULL; | |
372 | ||
373 | /* call only for ibss! */ | |
374 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
375 | return -EINVAL; | |
376 | ||
667503dd | 377 | wdev_lock(wdev); |
04a773ad | 378 | if (wdev->current_bss) |
19957bb3 | 379 | chan = wdev->current_bss->pub.channel; |
683b6d3b JB |
380 | else if (wdev->wext.ibss.chandef.chan) |
381 | chan = wdev->wext.ibss.chandef.chan; | |
667503dd | 382 | wdev_unlock(wdev); |
04a773ad JB |
383 | |
384 | if (chan) { | |
385 | freq->m = chan->center_freq; | |
386 | freq->e = 6; | |
387 | return 0; | |
388 | } | |
389 | ||
390 | /* no channel if not joining */ | |
391 | return -EINVAL; | |
392 | } | |
04a773ad JB |
393 | |
394 | int cfg80211_ibss_wext_siwessid(struct net_device *dev, | |
395 | struct iw_request_info *info, | |
396 | struct iw_point *data, char *ssid) | |
397 | { | |
398 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 399 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
04a773ad JB |
400 | size_t len = data->length; |
401 | int err; | |
402 | ||
403 | /* call only for ibss! */ | |
404 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
405 | return -EINVAL; | |
406 | ||
59bbb6f7 | 407 | if (!rdev->ops->join_ibss) |
04a773ad JB |
408 | return -EOPNOTSUPP; |
409 | ||
667503dd JB |
410 | wdev_lock(wdev); |
411 | err = 0; | |
412 | if (wdev->ssid_len) | |
59bbb6f7 | 413 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
414 | wdev_unlock(wdev); |
415 | ||
416 | if (err) | |
417 | return err; | |
04a773ad JB |
418 | |
419 | /* iwconfig uses nul termination in SSID.. */ | |
420 | if (len > 0 && ssid[len - 1] == '\0') | |
421 | len--; | |
422 | ||
c1e5f471 | 423 | memcpy(wdev->ssid, ssid, len); |
cbe8fa9c | 424 | wdev->wext.ibss.ssid = wdev->ssid; |
cbe8fa9c | 425 | wdev->wext.ibss.ssid_len = len; |
04a773ad | 426 | |
fffd0934 | 427 | wdev_lock(wdev); |
59bbb6f7 | 428 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
429 | wdev_unlock(wdev); |
430 | ||
431 | return err; | |
04a773ad | 432 | } |
04a773ad JB |
433 | |
434 | int cfg80211_ibss_wext_giwessid(struct net_device *dev, | |
435 | struct iw_request_info *info, | |
436 | struct iw_point *data, char *ssid) | |
437 | { | |
438 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
439 | ||
440 | /* call only for ibss! */ | |
441 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
442 | return -EINVAL; | |
443 | ||
444 | data->flags = 0; | |
445 | ||
667503dd | 446 | wdev_lock(wdev); |
04a773ad JB |
447 | if (wdev->ssid_len) { |
448 | data->flags = 1; | |
449 | data->length = wdev->ssid_len; | |
450 | memcpy(ssid, wdev->ssid, data->length); | |
cbe8fa9c | 451 | } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { |
04a773ad | 452 | data->flags = 1; |
cbe8fa9c JB |
453 | data->length = wdev->wext.ibss.ssid_len; |
454 | memcpy(ssid, wdev->wext.ibss.ssid, data->length); | |
04a773ad | 455 | } |
667503dd | 456 | wdev_unlock(wdev); |
04a773ad JB |
457 | |
458 | return 0; | |
459 | } | |
04a773ad JB |
460 | |
461 | int cfg80211_ibss_wext_siwap(struct net_device *dev, | |
462 | struct iw_request_info *info, | |
463 | struct sockaddr *ap_addr, char *extra) | |
464 | { | |
465 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 466 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
04a773ad JB |
467 | u8 *bssid = ap_addr->sa_data; |
468 | int err; | |
469 | ||
470 | /* call only for ibss! */ | |
471 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
472 | return -EINVAL; | |
473 | ||
59bbb6f7 | 474 | if (!rdev->ops->join_ibss) |
04a773ad JB |
475 | return -EOPNOTSUPP; |
476 | ||
477 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
478 | return -EINVAL; | |
479 | ||
480 | /* automatic mode */ | |
481 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
482 | bssid = NULL; | |
483 | ||
74f82741 JB |
484 | if (bssid && !is_valid_ether_addr(bssid)) |
485 | return -EINVAL; | |
486 | ||
04a773ad | 487 | /* both automatic */ |
cbe8fa9c | 488 | if (!bssid && !wdev->wext.ibss.bssid) |
04a773ad JB |
489 | return 0; |
490 | ||
491 | /* fixed already - and no change */ | |
cbe8fa9c | 492 | if (wdev->wext.ibss.bssid && bssid && |
ac422d3c | 493 | ether_addr_equal(bssid, wdev->wext.ibss.bssid)) |
04a773ad JB |
494 | return 0; |
495 | ||
667503dd JB |
496 | wdev_lock(wdev); |
497 | err = 0; | |
498 | if (wdev->ssid_len) | |
59bbb6f7 | 499 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
500 | wdev_unlock(wdev); |
501 | ||
502 | if (err) | |
503 | return err; | |
04a773ad JB |
504 | |
505 | if (bssid) { | |
cbe8fa9c JB |
506 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); |
507 | wdev->wext.ibss.bssid = wdev->wext.bssid; | |
04a773ad | 508 | } else |
cbe8fa9c | 509 | wdev->wext.ibss.bssid = NULL; |
04a773ad | 510 | |
fffd0934 | 511 | wdev_lock(wdev); |
59bbb6f7 | 512 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
513 | wdev_unlock(wdev); |
514 | ||
515 | return err; | |
04a773ad | 516 | } |
04a773ad JB |
517 | |
518 | int cfg80211_ibss_wext_giwap(struct net_device *dev, | |
519 | struct iw_request_info *info, | |
520 | struct sockaddr *ap_addr, char *extra) | |
521 | { | |
522 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
523 | ||
524 | /* call only for ibss! */ | |
525 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
526 | return -EINVAL; | |
527 | ||
528 | ap_addr->sa_family = ARPHRD_ETHER; | |
529 | ||
667503dd | 530 | wdev_lock(wdev); |
7ebbe6bd | 531 | if (wdev->current_bss) |
19957bb3 | 532 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
80e5b06a | 533 | else if (wdev->wext.ibss.bssid) |
cbe8fa9c | 534 | memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); |
80e5b06a | 535 | else |
d2beae10 | 536 | eth_zero_addr(ap_addr->sa_data); |
80e5b06a | 537 | |
667503dd JB |
538 | wdev_unlock(wdev); |
539 | ||
04a773ad JB |
540 | return 0; |
541 | } | |
04a773ad | 542 | #endif |