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Commit | Line | Data |
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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 | */ | |
107 | struct ieee80211_supported_band *sband = | |
683b6d3b | 108 | rdev->wiphy.bands[params->chandef.chan->band]; |
93b05238 | 109 | int j; |
57fbcce3 | 110 | u32 flag = params->chandef.chan->band == NL80211_BAND_5GHZ ? |
93b05238 JB |
111 | IEEE80211_RATE_MANDATORY_A : |
112 | IEEE80211_RATE_MANDATORY_B; | |
113 | ||
114 | for (j = 0; j < sband->n_bitrates; j++) { | |
115 | if (sband->bitrates[j].flags & flag) | |
116 | params->basic_rates |= BIT(j); | |
117 | } | |
118 | } | |
119 | ||
f1c1f17a JB |
120 | if (WARN_ON(connkeys && connkeys->def < 0)) |
121 | return -EINVAL; | |
122 | ||
fffd0934 | 123 | if (WARN_ON(wdev->connect_keys)) |
b47f610b | 124 | kzfree(wdev->connect_keys); |
fffd0934 JB |
125 | wdev->connect_keys = connkeys; |
126 | ||
c30a3d38 | 127 | wdev->ibss_fixed = params->channel_fixed; |
5336fa88 | 128 | wdev->ibss_dfs_possible = params->userspace_handles_dfs; |
9e0e2961 | 129 | wdev->chandef = params->chandef; |
9ae3b172 TM |
130 | if (connkeys) { |
131 | params->wep_keys = connkeys->params; | |
132 | params->wep_tx_key = connkeys->def; | |
133 | } | |
134 | ||
3d23e349 | 135 | #ifdef CONFIG_CFG80211_WEXT |
683b6d3b | 136 | wdev->wext.ibss.chandef = params->chandef; |
04a773ad | 137 | #endif |
e35e4d28 | 138 | err = rdev_join_ibss(rdev, dev, params); |
fffd0934 JB |
139 | if (err) { |
140 | wdev->connect_keys = NULL; | |
04a773ad | 141 | return err; |
fffd0934 | 142 | } |
04a773ad JB |
143 | |
144 | memcpy(wdev->ssid, params->ssid, params->ssid_len); | |
145 | wdev->ssid_len = params->ssid_len; | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
667503dd | 150 | static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
04a773ad JB |
151 | { |
152 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 153 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
fffd0934 | 154 | int i; |
04a773ad | 155 | |
667503dd JB |
156 | ASSERT_WDEV_LOCK(wdev); |
157 | ||
b47f610b | 158 | kzfree(wdev->connect_keys); |
fffd0934 JB |
159 | wdev->connect_keys = NULL; |
160 | ||
fa9ffc74 KP |
161 | rdev_set_qos_map(rdev, dev, NULL); |
162 | ||
fffd0934 JB |
163 | /* |
164 | * Delete all the keys ... pairwise keys can't really | |
165 | * exist any more anyway, but default keys might. | |
166 | */ | |
167 | if (rdev->ops->del_key) | |
168 | for (i = 0; i < 6; i++) | |
e35e4d28 | 169 | rdev_del_key(rdev, dev, i, false, NULL); |
fffd0934 | 170 | |
04a773ad JB |
171 | if (wdev->current_bss) { |
172 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 173 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
04a773ad JB |
174 | } |
175 | ||
176 | wdev->current_bss = NULL; | |
177 | wdev->ssid_len = 0; | |
9e0e2961 | 178 | memset(&wdev->chandef, 0, sizeof(wdev->chandef)); |
3d23e349 | 179 | #ifdef CONFIG_CFG80211_WEXT |
9d308429 | 180 | if (!nowext) |
cbe8fa9c | 181 | wdev->wext.ibss.ssid_len = 0; |
9d308429 | 182 | #endif |
b35a51c7 | 183 | cfg80211_sched_dfs_chan_update(rdev); |
04a773ad JB |
184 | } |
185 | ||
667503dd JB |
186 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext) |
187 | { | |
188 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
189 | ||
190 | wdev_lock(wdev); | |
191 | __cfg80211_clear_ibss(dev, nowext); | |
192 | wdev_unlock(wdev); | |
193 | } | |
194 | ||
98d3a7ca JB |
195 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
196 | struct net_device *dev, bool nowext) | |
04a773ad | 197 | { |
78485475 | 198 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
04a773ad JB |
199 | int err; |
200 | ||
667503dd JB |
201 | ASSERT_WDEV_LOCK(wdev); |
202 | ||
78485475 JB |
203 | if (!wdev->ssid_len) |
204 | return -ENOLINK; | |
205 | ||
e35e4d28 | 206 | err = rdev_leave_ibss(rdev, dev); |
04a773ad JB |
207 | |
208 | if (err) | |
209 | return err; | |
210 | ||
f8d16d3e | 211 | wdev->conn_owner_nlportid = 0; |
667503dd | 212 | __cfg80211_clear_ibss(dev, nowext); |
04a773ad JB |
213 | |
214 | return 0; | |
215 | } | |
216 | ||
667503dd JB |
217 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
218 | struct net_device *dev, bool nowext) | |
219 | { | |
220 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
221 | int err; | |
222 | ||
223 | wdev_lock(wdev); | |
224 | err = __cfg80211_leave_ibss(rdev, dev, nowext); | |
225 | wdev_unlock(wdev); | |
226 | ||
227 | return err; | |
228 | } | |
229 | ||
3d23e349 | 230 | #ifdef CONFIG_CFG80211_WEXT |
fffd0934 JB |
231 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
232 | struct wireless_dev *wdev) | |
04a773ad | 233 | { |
fffd0934 | 234 | struct cfg80211_cached_keys *ck = NULL; |
57fbcce3 | 235 | enum nl80211_band band; |
fffd0934 JB |
236 | int i, err; |
237 | ||
238 | ASSERT_WDEV_LOCK(wdev); | |
04a773ad | 239 | |
cbe8fa9c JB |
240 | if (!wdev->wext.ibss.beacon_interval) |
241 | wdev->wext.ibss.beacon_interval = 100; | |
8e30bc55 | 242 | |
04a773ad | 243 | /* try to find an IBSS channel if none requested ... */ |
683b6d3b | 244 | if (!wdev->wext.ibss.chandef.chan) { |
1fe4517c | 245 | struct ieee80211_channel *new_chan = NULL; |
683b6d3b | 246 | |
57fbcce3 | 247 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
04a773ad JB |
248 | struct ieee80211_supported_band *sband; |
249 | struct ieee80211_channel *chan; | |
250 | ||
251 | sband = rdev->wiphy.bands[band]; | |
252 | if (!sband) | |
253 | continue; | |
254 | ||
255 | for (i = 0; i < sband->n_channels; i++) { | |
256 | chan = &sband->channels[i]; | |
8fe02e16 | 257 | if (chan->flags & IEEE80211_CHAN_NO_IR) |
04a773ad JB |
258 | continue; |
259 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
260 | continue; | |
1fe4517c | 261 | new_chan = chan; |
04a773ad JB |
262 | break; |
263 | } | |
264 | ||
1fe4517c | 265 | if (new_chan) |
04a773ad JB |
266 | break; |
267 | } | |
268 | ||
1fe4517c | 269 | if (!new_chan) |
04a773ad | 270 | return -EINVAL; |
1fe4517c SW |
271 | |
272 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, new_chan, | |
273 | NL80211_CHAN_NO_HT); | |
04a773ad JB |
274 | } |
275 | ||
276 | /* don't join -- SSID is not there */ | |
cbe8fa9c | 277 | if (!wdev->wext.ibss.ssid_len) |
04a773ad JB |
278 | return 0; |
279 | ||
280 | if (!netif_running(wdev->netdev)) | |
281 | return 0; | |
282 | ||
89b706fb | 283 | if (wdev->wext.keys) |
fffd0934 JB |
284 | wdev->wext.keys->def = wdev->wext.default_key; |
285 | ||
286 | wdev->wext.ibss.privacy = wdev->wext.default_key != -1; | |
287 | ||
f1c1f17a | 288 | if (wdev->wext.keys && wdev->wext.keys->def != -1) { |
fffd0934 JB |
289 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); |
290 | if (!ck) | |
291 | return -ENOMEM; | |
b8676221 | 292 | for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) |
fffd0934 JB |
293 | ck->params[i].key = ck->data[i]; |
294 | } | |
295 | err = __cfg80211_join_ibss(rdev, wdev->netdev, | |
296 | &wdev->wext.ibss, ck); | |
297 | if (err) | |
298 | kfree(ck); | |
299 | ||
300 | return err; | |
04a773ad JB |
301 | } |
302 | ||
303 | int cfg80211_ibss_wext_siwfreq(struct net_device *dev, | |
304 | struct iw_request_info *info, | |
59bbb6f7 | 305 | struct iw_freq *wextfreq, char *extra) |
04a773ad JB |
306 | { |
307 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 308 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
59bbb6f7 JB |
309 | struct ieee80211_channel *chan = NULL; |
310 | int err, freq; | |
04a773ad JB |
311 | |
312 | /* call only for ibss! */ | |
313 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
314 | return -EINVAL; | |
315 | ||
59bbb6f7 | 316 | if (!rdev->ops->join_ibss) |
04a773ad JB |
317 | return -EOPNOTSUPP; |
318 | ||
96998e3a | 319 | freq = cfg80211_wext_freq(wextfreq); |
59bbb6f7 JB |
320 | if (freq < 0) |
321 | return freq; | |
04a773ad | 322 | |
59bbb6f7 JB |
323 | if (freq) { |
324 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
325 | if (!chan) | |
326 | return -EINVAL; | |
8fe02e16 | 327 | if (chan->flags & IEEE80211_CHAN_NO_IR || |
59bbb6f7 JB |
328 | chan->flags & IEEE80211_CHAN_DISABLED) |
329 | return -EINVAL; | |
330 | } | |
04a773ad | 331 | |
683b6d3b | 332 | if (wdev->wext.ibss.chandef.chan == chan) |
04a773ad JB |
333 | return 0; |
334 | ||
667503dd JB |
335 | wdev_lock(wdev); |
336 | err = 0; | |
337 | if (wdev->ssid_len) | |
59bbb6f7 | 338 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
339 | wdev_unlock(wdev); |
340 | ||
341 | if (err) | |
342 | return err; | |
04a773ad JB |
343 | |
344 | if (chan) { | |
1fe4517c SW |
345 | cfg80211_chandef_create(&wdev->wext.ibss.chandef, chan, |
346 | NL80211_CHAN_NO_HT); | |
cbe8fa9c | 347 | wdev->wext.ibss.channel_fixed = true; |
04a773ad JB |
348 | } else { |
349 | /* cfg80211_ibss_wext_join will pick one if needed */ | |
cbe8fa9c | 350 | wdev->wext.ibss.channel_fixed = false; |
04a773ad JB |
351 | } |
352 | ||
fffd0934 | 353 | wdev_lock(wdev); |
59bbb6f7 | 354 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
355 | wdev_unlock(wdev); |
356 | ||
357 | return err; | |
04a773ad | 358 | } |
04a773ad JB |
359 | |
360 | int cfg80211_ibss_wext_giwfreq(struct net_device *dev, | |
361 | struct iw_request_info *info, | |
362 | struct iw_freq *freq, char *extra) | |
363 | { | |
364 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
365 | struct ieee80211_channel *chan = NULL; | |
366 | ||
367 | /* call only for ibss! */ | |
368 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
369 | return -EINVAL; | |
370 | ||
667503dd | 371 | wdev_lock(wdev); |
04a773ad | 372 | if (wdev->current_bss) |
19957bb3 | 373 | chan = wdev->current_bss->pub.channel; |
683b6d3b JB |
374 | else if (wdev->wext.ibss.chandef.chan) |
375 | chan = wdev->wext.ibss.chandef.chan; | |
667503dd | 376 | wdev_unlock(wdev); |
04a773ad JB |
377 | |
378 | if (chan) { | |
379 | freq->m = chan->center_freq; | |
380 | freq->e = 6; | |
381 | return 0; | |
382 | } | |
383 | ||
384 | /* no channel if not joining */ | |
385 | return -EINVAL; | |
386 | } | |
04a773ad JB |
387 | |
388 | int cfg80211_ibss_wext_siwessid(struct net_device *dev, | |
389 | struct iw_request_info *info, | |
390 | struct iw_point *data, char *ssid) | |
391 | { | |
392 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 393 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
04a773ad JB |
394 | size_t len = data->length; |
395 | int err; | |
396 | ||
397 | /* call only for ibss! */ | |
398 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
399 | return -EINVAL; | |
400 | ||
59bbb6f7 | 401 | if (!rdev->ops->join_ibss) |
04a773ad JB |
402 | return -EOPNOTSUPP; |
403 | ||
667503dd JB |
404 | wdev_lock(wdev); |
405 | err = 0; | |
406 | if (wdev->ssid_len) | |
59bbb6f7 | 407 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
408 | wdev_unlock(wdev); |
409 | ||
410 | if (err) | |
411 | return err; | |
04a773ad JB |
412 | |
413 | /* iwconfig uses nul termination in SSID.. */ | |
414 | if (len > 0 && ssid[len - 1] == '\0') | |
415 | len--; | |
416 | ||
c1e5f471 | 417 | memcpy(wdev->ssid, ssid, len); |
cbe8fa9c | 418 | wdev->wext.ibss.ssid = wdev->ssid; |
cbe8fa9c | 419 | wdev->wext.ibss.ssid_len = len; |
04a773ad | 420 | |
fffd0934 | 421 | wdev_lock(wdev); |
59bbb6f7 | 422 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
423 | wdev_unlock(wdev); |
424 | ||
425 | return err; | |
04a773ad | 426 | } |
04a773ad JB |
427 | |
428 | int cfg80211_ibss_wext_giwessid(struct net_device *dev, | |
429 | struct iw_request_info *info, | |
430 | struct iw_point *data, char *ssid) | |
431 | { | |
432 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
433 | ||
434 | /* call only for ibss! */ | |
435 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
436 | return -EINVAL; | |
437 | ||
438 | data->flags = 0; | |
439 | ||
667503dd | 440 | wdev_lock(wdev); |
04a773ad JB |
441 | if (wdev->ssid_len) { |
442 | data->flags = 1; | |
443 | data->length = wdev->ssid_len; | |
444 | memcpy(ssid, wdev->ssid, data->length); | |
cbe8fa9c | 445 | } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { |
04a773ad | 446 | data->flags = 1; |
cbe8fa9c JB |
447 | data->length = wdev->wext.ibss.ssid_len; |
448 | memcpy(ssid, wdev->wext.ibss.ssid, data->length); | |
04a773ad | 449 | } |
667503dd | 450 | wdev_unlock(wdev); |
04a773ad JB |
451 | |
452 | return 0; | |
453 | } | |
04a773ad JB |
454 | |
455 | int cfg80211_ibss_wext_siwap(struct net_device *dev, | |
456 | struct iw_request_info *info, | |
457 | struct sockaddr *ap_addr, char *extra) | |
458 | { | |
459 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 460 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
04a773ad JB |
461 | u8 *bssid = ap_addr->sa_data; |
462 | int err; | |
463 | ||
464 | /* call only for ibss! */ | |
465 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
466 | return -EINVAL; | |
467 | ||
59bbb6f7 | 468 | if (!rdev->ops->join_ibss) |
04a773ad JB |
469 | return -EOPNOTSUPP; |
470 | ||
471 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
472 | return -EINVAL; | |
473 | ||
474 | /* automatic mode */ | |
475 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
476 | bssid = NULL; | |
477 | ||
74f82741 JB |
478 | if (bssid && !is_valid_ether_addr(bssid)) |
479 | return -EINVAL; | |
480 | ||
04a773ad | 481 | /* both automatic */ |
cbe8fa9c | 482 | if (!bssid && !wdev->wext.ibss.bssid) |
04a773ad JB |
483 | return 0; |
484 | ||
485 | /* fixed already - and no change */ | |
cbe8fa9c | 486 | if (wdev->wext.ibss.bssid && bssid && |
ac422d3c | 487 | ether_addr_equal(bssid, wdev->wext.ibss.bssid)) |
04a773ad JB |
488 | return 0; |
489 | ||
667503dd JB |
490 | wdev_lock(wdev); |
491 | err = 0; | |
492 | if (wdev->ssid_len) | |
59bbb6f7 | 493 | err = __cfg80211_leave_ibss(rdev, dev, true); |
667503dd JB |
494 | wdev_unlock(wdev); |
495 | ||
496 | if (err) | |
497 | return err; | |
04a773ad JB |
498 | |
499 | if (bssid) { | |
cbe8fa9c JB |
500 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); |
501 | wdev->wext.ibss.bssid = wdev->wext.bssid; | |
04a773ad | 502 | } else |
cbe8fa9c | 503 | wdev->wext.ibss.bssid = NULL; |
04a773ad | 504 | |
fffd0934 | 505 | wdev_lock(wdev); |
59bbb6f7 | 506 | err = cfg80211_ibss_wext_join(rdev, wdev); |
fffd0934 JB |
507 | wdev_unlock(wdev); |
508 | ||
509 | return err; | |
04a773ad | 510 | } |
04a773ad JB |
511 | |
512 | int cfg80211_ibss_wext_giwap(struct net_device *dev, | |
513 | struct iw_request_info *info, | |
514 | struct sockaddr *ap_addr, char *extra) | |
515 | { | |
516 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
517 | ||
518 | /* call only for ibss! */ | |
519 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) | |
520 | return -EINVAL; | |
521 | ||
522 | ap_addr->sa_family = ARPHRD_ETHER; | |
523 | ||
667503dd | 524 | wdev_lock(wdev); |
7ebbe6bd | 525 | if (wdev->current_bss) |
19957bb3 | 526 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
80e5b06a | 527 | else if (wdev->wext.ibss.bssid) |
cbe8fa9c | 528 | memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); |
80e5b06a | 529 | else |
d2beae10 | 530 | eth_zero_addr(ap_addr->sa_data); |
80e5b06a | 531 | |
667503dd JB |
532 | wdev_unlock(wdev); |
533 | ||
04a773ad JB |
534 | return 0; |
535 | } | |
04a773ad | 536 | #endif |