Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * This is the linux wireless configuration interface. | |
3 | * | |
08645126 | 4 | * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
6 | ||
7 | #include <linux/if.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/err.h> | |
704232c2 JB |
10 | #include <linux/list.h> |
11 | #include <linux/nl80211.h> | |
12 | #include <linux/debugfs.h> | |
13 | #include <linux/notifier.h> | |
14 | #include <linux/device.h> | |
1f87f7d3 | 15 | #include <linux/rtnetlink.h> |
704232c2 JB |
16 | #include <net/genetlink.h> |
17 | #include <net/cfg80211.h> | |
55682965 | 18 | #include "nl80211.h" |
704232c2 JB |
19 | #include "core.h" |
20 | #include "sysfs.h" | |
1ac61302 | 21 | #include "debugfs.h" |
a9a11622 | 22 | #include "wext-compat.h" |
704232c2 JB |
23 | |
24 | /* name for sysfs, %d is appended */ | |
25 | #define PHY_NAME "phy" | |
26 | ||
27 | MODULE_AUTHOR("Johannes Berg"); | |
28 | MODULE_LICENSE("GPL"); | |
29 | MODULE_DESCRIPTION("wireless configuration support"); | |
30 | ||
31 | /* RCU might be appropriate here since we usually | |
32 | * only read the list, and that can happen quite | |
33 | * often because we need to do it for each command */ | |
79c97e97 | 34 | LIST_HEAD(cfg80211_rdev_list); |
a1794390 LR |
35 | |
36 | /* | |
79c97e97 | 37 | * This is used to protect the cfg80211_rdev_list, cfg80211_regdomain, |
e38f8a7a LR |
38 | * country_ie_regdomain, the reg_beacon_list and the the last regulatory |
39 | * request receipt (last_request). | |
a1794390 LR |
40 | */ |
41 | DEFINE_MUTEX(cfg80211_mutex); | |
704232c2 JB |
42 | |
43 | /* for debugfs */ | |
44 | static struct dentry *ieee80211_debugfs_dir; | |
45 | ||
806a9e39 | 46 | /* requires cfg80211_mutex to be held! */ |
79c97e97 | 47 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 48 | { |
79c97e97 | 49 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 50 | |
85fd129a LR |
51 | if (!wiphy_idx_valid(wiphy_idx)) |
52 | return NULL; | |
53 | ||
761cf7ec LR |
54 | assert_cfg80211_lock(); |
55 | ||
79c97e97 JB |
56 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
57 | if (rdev->wiphy_idx == wiphy_idx) { | |
58 | result = rdev; | |
55682965 JB |
59 | break; |
60 | } | |
61 | } | |
62 | ||
63 | return result; | |
64 | } | |
65 | ||
806a9e39 LR |
66 | int get_wiphy_idx(struct wiphy *wiphy) |
67 | { | |
79c97e97 | 68 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
69 | if (!wiphy) |
70 | return WIPHY_IDX_STALE; | |
79c97e97 JB |
71 | rdev = wiphy_to_dev(wiphy); |
72 | return rdev->wiphy_idx; | |
806a9e39 LR |
73 | } |
74 | ||
79c97e97 | 75 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
76 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
77 | { | |
79c97e97 | 78 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
79 | |
80 | if (!wiphy_idx_valid(wiphy_idx)) | |
81 | return NULL; | |
82 | ||
83 | assert_cfg80211_lock(); | |
84 | ||
79c97e97 JB |
85 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
86 | if (!rdev) | |
806a9e39 | 87 | return NULL; |
79c97e97 | 88 | return &rdev->wiphy; |
806a9e39 LR |
89 | } |
90 | ||
a1794390 | 91 | /* requires cfg80211_mutex to be held! */ |
4bbf4d56 | 92 | struct cfg80211_registered_device * |
79c97e97 | 93 | __cfg80211_rdev_from_info(struct genl_info *info) |
55682965 JB |
94 | { |
95 | int ifindex; | |
b5850a7a | 96 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
55682965 JB |
97 | struct net_device *dev; |
98 | int err = -EINVAL; | |
99 | ||
761cf7ec LR |
100 | assert_cfg80211_lock(); |
101 | ||
55682965 | 102 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
79c97e97 | 103 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
55682965 JB |
104 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
105 | err = -ENODEV; | |
106 | } | |
107 | ||
108 | if (info->attrs[NL80211_ATTR_IFINDEX]) { | |
109 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); | |
463d0183 | 110 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
55682965 JB |
111 | if (dev) { |
112 | if (dev->ieee80211_ptr) | |
113 | byifidx = | |
114 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); | |
115 | dev_put(dev); | |
116 | } | |
117 | err = -ENODEV; | |
118 | } | |
119 | ||
b5850a7a LR |
120 | if (bywiphyidx && byifidx) { |
121 | if (bywiphyidx != byifidx) | |
55682965 JB |
122 | return ERR_PTR(-EINVAL); |
123 | else | |
b5850a7a | 124 | return bywiphyidx; /* == byifidx */ |
55682965 | 125 | } |
b5850a7a LR |
126 | if (bywiphyidx) |
127 | return bywiphyidx; | |
55682965 JB |
128 | |
129 | if (byifidx) | |
130 | return byifidx; | |
131 | ||
132 | return ERR_PTR(err); | |
133 | } | |
134 | ||
135 | struct cfg80211_registered_device * | |
136 | cfg80211_get_dev_from_info(struct genl_info *info) | |
137 | { | |
79c97e97 | 138 | struct cfg80211_registered_device *rdev; |
55682965 | 139 | |
a1794390 | 140 | mutex_lock(&cfg80211_mutex); |
79c97e97 | 141 | rdev = __cfg80211_rdev_from_info(info); |
55682965 JB |
142 | |
143 | /* if it is not an error we grab the lock on | |
144 | * it to assure it won't be going away while | |
145 | * we operate on it */ | |
79c97e97 JB |
146 | if (!IS_ERR(rdev)) |
147 | mutex_lock(&rdev->mtx); | |
55682965 | 148 | |
a1794390 | 149 | mutex_unlock(&cfg80211_mutex); |
55682965 | 150 | |
79c97e97 | 151 | return rdev; |
55682965 JB |
152 | } |
153 | ||
154 | struct cfg80211_registered_device * | |
463d0183 | 155 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
55682965 | 156 | { |
79c97e97 | 157 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
55682965 JB |
158 | struct net_device *dev; |
159 | ||
a1794390 | 160 | mutex_lock(&cfg80211_mutex); |
463d0183 | 161 | dev = dev_get_by_index(net, ifindex); |
55682965 JB |
162 | if (!dev) |
163 | goto out; | |
164 | if (dev->ieee80211_ptr) { | |
79c97e97 JB |
165 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
166 | mutex_lock(&rdev->mtx); | |
55682965 | 167 | } else |
79c97e97 | 168 | rdev = ERR_PTR(-ENODEV); |
55682965 JB |
169 | dev_put(dev); |
170 | out: | |
a1794390 | 171 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 172 | return rdev; |
55682965 JB |
173 | } |
174 | ||
4bbf4d56 | 175 | /* requires cfg80211_mutex to be held */ |
55682965 JB |
176 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
177 | char *newname) | |
178 | { | |
79c97e97 | 179 | struct cfg80211_registered_device *rdev2; |
b5850a7a | 180 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 181 | |
4bbf4d56 | 182 | assert_cfg80211_lock(); |
2940bb69 | 183 | |
55682965 | 184 | /* prohibit calling the thing phy%d when %d is not its number */ |
b5850a7a LR |
185 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
186 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
187 | /* count number of places needed to print wiphy_idx */ | |
55682965 | 188 | digits = 1; |
b5850a7a | 189 | while (wiphy_idx /= 10) |
55682965 JB |
190 | digits++; |
191 | /* | |
192 | * deny the name if it is phy<idx> where <idx> is printed | |
193 | * without leading zeroes. taken == strlen(newname) here | |
194 | */ | |
195 | if (taken == strlen(PHY_NAME) + digits) | |
4bbf4d56 | 196 | return -EINVAL; |
2940bb69 EB |
197 | } |
198 | ||
199 | ||
200 | /* Ignore nop renames */ | |
2940bb69 | 201 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 202 | return 0; |
2940bb69 EB |
203 | |
204 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
205 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
206 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
4bbf4d56 | 207 | return -EINVAL; |
55682965 | 208 | |
55682965 JB |
209 | result = device_rename(&rdev->wiphy.dev, newname); |
210 | if (result) | |
4bbf4d56 | 211 | return result; |
55682965 | 212 | |
33c0360b JB |
213 | if (rdev->wiphy.debugfsdir && |
214 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
215 | rdev->wiphy.debugfsdir, |
216 | rdev->wiphy.debugfsdir->d_parent, | |
217 | newname)) | |
218 | printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", | |
219 | newname); | |
220 | ||
4bbf4d56 | 221 | nl80211_notify_dev_rename(rdev); |
55682965 | 222 | |
4bbf4d56 | 223 | return 0; |
55682965 JB |
224 | } |
225 | ||
463d0183 JB |
226 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
227 | struct net *net) | |
228 | { | |
229 | struct wireless_dev *wdev; | |
230 | int err = 0; | |
231 | ||
232 | if (!rdev->wiphy.netnsok) | |
233 | return -EOPNOTSUPP; | |
234 | ||
235 | list_for_each_entry(wdev, &rdev->netdev_list, list) { | |
236 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; | |
237 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
238 | if (err) | |
239 | break; | |
240 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
241 | } | |
242 | ||
243 | if (err) { | |
244 | /* failed -- clean up to old netns */ | |
245 | net = wiphy_net(&rdev->wiphy); | |
246 | ||
247 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, | |
248 | list) { | |
249 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; | |
250 | err = dev_change_net_namespace(wdev->netdev, net, | |
251 | "wlan%d"); | |
252 | WARN_ON(err); | |
253 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
254 | } | |
255 | } | |
256 | ||
257 | wiphy_net_set(&rdev->wiphy, net); | |
258 | ||
259 | return err; | |
260 | } | |
261 | ||
1f87f7d3 JB |
262 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
263 | { | |
79c97e97 | 264 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 265 | |
79c97e97 | 266 | rdev->ops->rfkill_poll(&rdev->wiphy); |
1f87f7d3 JB |
267 | } |
268 | ||
269 | static int cfg80211_rfkill_set_block(void *data, bool blocked) | |
270 | { | |
79c97e97 | 271 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
272 | struct wireless_dev *wdev; |
273 | ||
274 | if (!blocked) | |
275 | return 0; | |
276 | ||
277 | rtnl_lock(); | |
79c97e97 | 278 | mutex_lock(&rdev->devlist_mtx); |
1f87f7d3 | 279 | |
79c97e97 | 280 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
1f87f7d3 JB |
281 | dev_close(wdev->netdev); |
282 | ||
79c97e97 | 283 | mutex_unlock(&rdev->devlist_mtx); |
1f87f7d3 JB |
284 | rtnl_unlock(); |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
290 | { | |
79c97e97 | 291 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 292 | |
79c97e97 JB |
293 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
294 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
295 | } |
296 | ||
667503dd JB |
297 | static void cfg80211_process_events(struct wireless_dev *wdev) |
298 | { | |
299 | struct cfg80211_event *ev; | |
300 | unsigned long flags; | |
301 | ||
302 | spin_lock_irqsave(&wdev->event_lock, flags); | |
303 | while (!list_empty(&wdev->event_list)) { | |
304 | ev = list_first_entry(&wdev->event_list, | |
305 | struct cfg80211_event, list); | |
306 | list_del(&ev->list); | |
307 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
308 | ||
309 | wdev_lock(wdev); | |
310 | switch (ev->type) { | |
311 | case EVENT_CONNECT_RESULT: | |
312 | __cfg80211_connect_result( | |
313 | wdev->netdev, ev->cr.bssid, | |
314 | ev->cr.req_ie, ev->cr.req_ie_len, | |
315 | ev->cr.resp_ie, ev->cr.resp_ie_len, | |
316 | ev->cr.status, | |
317 | ev->cr.status == WLAN_STATUS_SUCCESS); | |
318 | break; | |
319 | case EVENT_ROAMED: | |
320 | __cfg80211_roamed(wdev, ev->rm.bssid, | |
321 | ev->rm.req_ie, ev->rm.req_ie_len, | |
322 | ev->rm.resp_ie, ev->rm.resp_ie_len); | |
323 | break; | |
324 | case EVENT_DISCONNECTED: | |
325 | __cfg80211_disconnected(wdev->netdev, | |
326 | ev->dc.ie, ev->dc.ie_len, | |
327 | ev->dc.reason, true); | |
328 | break; | |
329 | case EVENT_IBSS_JOINED: | |
330 | __cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid); | |
331 | break; | |
332 | } | |
333 | wdev_unlock(wdev); | |
334 | ||
335 | kfree(ev); | |
336 | ||
337 | spin_lock_irqsave(&wdev->event_lock, flags); | |
338 | } | |
339 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
340 | } | |
341 | ||
342 | static void cfg80211_event_work(struct work_struct *work) | |
343 | { | |
344 | struct cfg80211_registered_device *rdev; | |
345 | struct wireless_dev *wdev; | |
346 | ||
347 | rdev = container_of(work, struct cfg80211_registered_device, | |
348 | event_work); | |
349 | ||
350 | rtnl_lock(); | |
351 | cfg80211_lock_rdev(rdev); | |
352 | mutex_lock(&rdev->devlist_mtx); | |
353 | ||
354 | list_for_each_entry(wdev, &rdev->netdev_list, list) | |
355 | cfg80211_process_events(wdev); | |
356 | ||
357 | mutex_unlock(&rdev->devlist_mtx); | |
358 | cfg80211_unlock_rdev(rdev); | |
359 | rtnl_unlock(); | |
360 | } | |
361 | ||
704232c2 JB |
362 | /* exported functions */ |
363 | ||
3dcf670b | 364 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 365 | { |
638af073 DC |
366 | static int wiphy_counter; |
367 | ||
79c97e97 | 368 | struct cfg80211_registered_device *rdev; |
704232c2 JB |
369 | int alloc_size; |
370 | ||
0b20633d JB |
371 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
372 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
373 | WARN_ON(ops->connect && !ops->disconnect); | |
374 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
375 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
376 | WARN_ON(ops->add_station && !ops->del_station); | |
377 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
41ade00f | 378 | |
79c97e97 | 379 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 380 | |
79c97e97 JB |
381 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
382 | if (!rdev) | |
704232c2 JB |
383 | return NULL; |
384 | ||
79c97e97 | 385 | rdev->ops = ops; |
704232c2 | 386 | |
a1794390 | 387 | mutex_lock(&cfg80211_mutex); |
704232c2 | 388 | |
79c97e97 | 389 | rdev->wiphy_idx = wiphy_counter++; |
a4d73ee1 | 390 | |
79c97e97 | 391 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
638af073 | 392 | wiphy_counter--; |
a1794390 | 393 | mutex_unlock(&cfg80211_mutex); |
704232c2 | 394 | /* ugh, wrapped! */ |
79c97e97 | 395 | kfree(rdev); |
704232c2 JB |
396 | return NULL; |
397 | } | |
704232c2 | 398 | |
a1794390 | 399 | mutex_unlock(&cfg80211_mutex); |
638af073 | 400 | |
704232c2 | 401 | /* give it a proper name */ |
79c97e97 JB |
402 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
403 | ||
404 | mutex_init(&rdev->mtx); | |
405 | mutex_init(&rdev->devlist_mtx); | |
406 | INIT_LIST_HEAD(&rdev->netdev_list); | |
407 | spin_lock_init(&rdev->bss_lock); | |
408 | INIT_LIST_HEAD(&rdev->bss_list); | |
409 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
410 | ||
411 | device_initialize(&rdev->wiphy.dev); | |
412 | rdev->wiphy.dev.class = &ieee80211_class; | |
413 | rdev->wiphy.dev.platform_data = rdev; | |
414 | ||
463d0183 JB |
415 | wiphy_net_set(&rdev->wiphy, &init_net); |
416 | ||
79c97e97 JB |
417 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
418 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
419 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
420 | &rdev->rfkill_ops, rdev); | |
421 | ||
422 | if (!rdev->rfkill) { | |
423 | kfree(rdev); | |
1f87f7d3 JB |
424 | return NULL; |
425 | } | |
426 | ||
79c97e97 JB |
427 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
428 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
429 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 430 | |
b9a5f8ca JM |
431 | /* |
432 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
433 | * Fragmentation and RTS threshold are disabled by default with the | |
434 | * special -1 value. | |
435 | */ | |
79c97e97 JB |
436 | rdev->wiphy.retry_short = 7; |
437 | rdev->wiphy.retry_long = 4; | |
438 | rdev->wiphy.frag_threshold = (u32) -1; | |
439 | rdev->wiphy.rts_threshold = (u32) -1; | |
b9a5f8ca | 440 | |
79c97e97 | 441 | return &rdev->wiphy; |
704232c2 JB |
442 | } |
443 | EXPORT_SYMBOL(wiphy_new); | |
444 | ||
445 | int wiphy_register(struct wiphy *wiphy) | |
446 | { | |
79c97e97 | 447 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 448 | int res; |
8318d78a JB |
449 | enum ieee80211_band band; |
450 | struct ieee80211_supported_band *sband; | |
451 | bool have_band = false; | |
452 | int i; | |
f59ac048 LR |
453 | u16 ifmodes = wiphy->interface_modes; |
454 | ||
455 | /* sanity check ifmodes */ | |
456 | WARN_ON(!ifmodes); | |
457 | ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; | |
458 | if (WARN_ON(ifmodes != wiphy->interface_modes)) | |
459 | wiphy->interface_modes = ifmodes; | |
8318d78a JB |
460 | |
461 | /* sanity check supported bands/channels */ | |
462 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
463 | sband = wiphy->bands[band]; | |
464 | if (!sband) | |
465 | continue; | |
466 | ||
467 | sband->band = band; | |
468 | ||
881d948c JB |
469 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
470 | return -EINVAL; | |
471 | ||
472 | /* | |
473 | * Since we use a u32 for rate bitmaps in | |
474 | * ieee80211_get_response_rate, we cannot | |
475 | * have more than 32 legacy rates. | |
476 | */ | |
477 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 478 | return -EINVAL; |
8318d78a JB |
479 | |
480 | for (i = 0; i < sband->n_channels; i++) { | |
481 | sband->channels[i].orig_flags = | |
482 | sband->channels[i].flags; | |
483 | sband->channels[i].orig_mag = | |
484 | sband->channels[i].max_antenna_gain; | |
485 | sband->channels[i].orig_mpwr = | |
486 | sband->channels[i].max_power; | |
487 | sband->channels[i].band = band; | |
488 | } | |
489 | ||
490 | have_band = true; | |
491 | } | |
492 | ||
493 | if (!have_band) { | |
494 | WARN_ON(1); | |
495 | return -EINVAL; | |
496 | } | |
497 | ||
498 | /* check and set up bitrates */ | |
499 | ieee80211_set_bitrate_flags(wiphy); | |
500 | ||
79c97e97 | 501 | res = device_add(&rdev->wiphy.dev); |
704232c2 | 502 | if (res) |
2f0accc1 | 503 | return res; |
704232c2 | 504 | |
79c97e97 | 505 | res = rfkill_register(rdev->rfkill); |
1f87f7d3 JB |
506 | if (res) |
507 | goto out_rm_dev; | |
508 | ||
2f0accc1 JB |
509 | mutex_lock(&cfg80211_mutex); |
510 | ||
511 | /* set up regulatory info */ | |
512 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); | |
513 | ||
79c97e97 | 514 | list_add(&rdev->list, &cfg80211_rdev_list); |
704232c2 | 515 | |
2f0accc1 JB |
516 | mutex_unlock(&cfg80211_mutex); |
517 | ||
704232c2 | 518 | /* add to debugfs */ |
79c97e97 JB |
519 | rdev->wiphy.debugfsdir = |
520 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 521 | ieee80211_debugfs_dir); |
79c97e97 JB |
522 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
523 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 524 | |
73d54c9e LR |
525 | if (wiphy->custom_regulatory) { |
526 | struct regulatory_request request; | |
527 | ||
528 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
529 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
530 | request.alpha2[0] = '9'; | |
531 | request.alpha2[1] = '9'; | |
532 | ||
533 | nl80211_send_reg_change_event(&request); | |
534 | } | |
535 | ||
79c97e97 | 536 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 537 | |
2f0accc1 | 538 | return 0; |
1f87f7d3 JB |
539 | |
540 | out_rm_dev: | |
79c97e97 | 541 | device_del(&rdev->wiphy.dev); |
704232c2 JB |
542 | return res; |
543 | } | |
544 | EXPORT_SYMBOL(wiphy_register); | |
545 | ||
1f87f7d3 JB |
546 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
547 | { | |
79c97e97 | 548 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 549 | |
79c97e97 | 550 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 551 | return; |
79c97e97 JB |
552 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
553 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
554 | } |
555 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
556 | ||
557 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
558 | { | |
79c97e97 | 559 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 560 | |
79c97e97 | 561 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
562 | } |
563 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
564 | ||
704232c2 JB |
565 | void wiphy_unregister(struct wiphy *wiphy) |
566 | { | |
79c97e97 | 567 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 568 | |
79c97e97 | 569 | rfkill_unregister(rdev->rfkill); |
1f87f7d3 | 570 | |
f16bfc1c | 571 | /* protect the device list */ |
a1794390 | 572 | mutex_lock(&cfg80211_mutex); |
704232c2 | 573 | |
79c97e97 | 574 | BUG_ON(!list_empty(&rdev->netdev_list)); |
f16bfc1c JB |
575 | |
576 | /* | |
79c97e97 | 577 | * Try to grab rdev->mtx. If a command is still in progress, |
f16bfc1c JB |
578 | * hopefully the driver will refuse it since it's tearing |
579 | * down the device already. We wait for this command to complete | |
580 | * before unlinking the item from the list. | |
581 | * Note: as codified by the BUG_ON above we cannot get here if | |
582 | * a virtual interface is still associated. Hence, we can only | |
583 | * get to lock contention here if userspace issues a command | |
584 | * that identified the hardware by wiphy index. | |
585 | */ | |
79c97e97 | 586 | mutex_lock(&rdev->mtx); |
f16bfc1c | 587 | /* unlock again before freeing */ |
79c97e97 | 588 | mutex_unlock(&rdev->mtx); |
704232c2 | 589 | |
79c97e97 | 590 | cfg80211_debugfs_rdev_del(rdev); |
1ac61302 | 591 | |
3f2355cb LR |
592 | /* If this device got a regulatory hint tell core its |
593 | * free to listen now to a new shiny device regulatory hint */ | |
594 | reg_device_remove(wiphy); | |
595 | ||
79c97e97 JB |
596 | list_del(&rdev->list); |
597 | device_del(&rdev->wiphy.dev); | |
598 | debugfs_remove(rdev->wiphy.debugfsdir); | |
704232c2 | 599 | |
a1794390 | 600 | mutex_unlock(&cfg80211_mutex); |
6682588a JB |
601 | |
602 | cancel_work_sync(&rdev->conn_work); | |
603 | cancel_work_sync(&rdev->scan_done_wk); | |
604 | kfree(rdev->scan_req); | |
605 | flush_work(&rdev->event_work); | |
704232c2 JB |
606 | } |
607 | EXPORT_SYMBOL(wiphy_unregister); | |
608 | ||
79c97e97 | 609 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 610 | { |
2a519311 | 611 | struct cfg80211_internal_bss *scan, *tmp; |
79c97e97 JB |
612 | rfkill_destroy(rdev->rfkill); |
613 | mutex_destroy(&rdev->mtx); | |
614 | mutex_destroy(&rdev->devlist_mtx); | |
615 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) | |
78c1c7e1 | 616 | cfg80211_put_bss(&scan->pub); |
79c97e97 | 617 | kfree(rdev); |
704232c2 JB |
618 | } |
619 | ||
620 | void wiphy_free(struct wiphy *wiphy) | |
621 | { | |
622 | put_device(&wiphy->dev); | |
623 | } | |
624 | EXPORT_SYMBOL(wiphy_free); | |
625 | ||
1f87f7d3 JB |
626 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
627 | { | |
79c97e97 | 628 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 629 | |
79c97e97 JB |
630 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
631 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
632 | } |
633 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
634 | ||
704232c2 JB |
635 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
636 | unsigned long state, | |
637 | void *ndev) | |
638 | { | |
639 | struct net_device *dev = ndev; | |
2a783c13 | 640 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 JB |
641 | struct cfg80211_registered_device *rdev; |
642 | ||
2a783c13 | 643 | if (!wdev) |
1f87f7d3 | 644 | return NOTIFY_DONE; |
704232c2 | 645 | |
2a783c13 | 646 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 647 | |
2a783c13 | 648 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 649 | |
704232c2 JB |
650 | switch (state) { |
651 | case NETDEV_REGISTER: | |
667503dd JB |
652 | mutex_init(&wdev->mtx); |
653 | INIT_LIST_HEAD(&wdev->event_list); | |
654 | spin_lock_init(&wdev->event_lock); | |
704232c2 | 655 | mutex_lock(&rdev->devlist_mtx); |
2a783c13 | 656 | list_add(&wdev->list, &rdev->netdev_list); |
463d0183 JB |
657 | /* can only change netns with wiphy */ |
658 | dev->features |= NETIF_F_NETNS_LOCAL; | |
659 | ||
704232c2 JB |
660 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
661 | "phy80211")) { | |
662 | printk(KERN_ERR "wireless: failed to add phy80211 " | |
663 | "symlink to netdev!\n"); | |
664 | } | |
2a783c13 | 665 | wdev->netdev = dev; |
b23aa676 | 666 | wdev->sme_state = CFG80211_SME_IDLE; |
bc92afd9 | 667 | mutex_unlock(&rdev->devlist_mtx); |
08645126 | 668 | #ifdef CONFIG_WIRELESS_EXT |
a9a11622 JB |
669 | if (!dev->wireless_handlers) |
670 | dev->wireless_handlers = &cfg80211_wext_handler; | |
2a783c13 JB |
671 | wdev->wext.default_key = -1; |
672 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 673 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
bc92afd9 JB |
674 | wdev->wext.ps = CONFIG_CFG80211_DEFAULT_PS_VALUE; |
675 | wdev->wext.ps_timeout = 500; | |
676 | if (rdev->ops->set_power_mgmt) | |
677 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, | |
678 | wdev->wext.ps, | |
679 | wdev->wext.ps_timeout)) { | |
680 | /* assume this means it's off */ | |
681 | wdev->wext.ps = false; | |
682 | } | |
08645126 | 683 | #endif |
704232c2 | 684 | break; |
04a773ad | 685 | case NETDEV_GOING_DOWN: |
b23aa676 SO |
686 | switch (wdev->iftype) { |
687 | case NL80211_IFTYPE_ADHOC: | |
688 | cfg80211_leave_ibss(rdev, dev, true); | |
689 | break; | |
690 | case NL80211_IFTYPE_STATION: | |
667503dd | 691 | wdev_lock(wdev); |
f2129354 JB |
692 | #ifdef CONFIG_WIRELESS_EXT |
693 | kfree(wdev->wext.ie); | |
694 | wdev->wext.ie = NULL; | |
695 | wdev->wext.ie_len = 0; | |
0eb14647 | 696 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
f2129354 | 697 | #endif |
667503dd JB |
698 | __cfg80211_disconnect(rdev, dev, |
699 | WLAN_REASON_DEAUTH_LEAVING, true); | |
19957bb3 | 700 | cfg80211_mlme_down(rdev, dev); |
667503dd | 701 | wdev_unlock(wdev); |
b23aa676 SO |
702 | break; |
703 | default: | |
704 | break; | |
705 | } | |
04a773ad JB |
706 | break; |
707 | case NETDEV_UP: | |
708 | #ifdef CONFIG_WIRELESS_EXT | |
667503dd JB |
709 | cfg80211_lock_rdev(rdev); |
710 | wdev_lock(wdev); | |
f2129354 JB |
711 | switch (wdev->iftype) { |
712 | case NL80211_IFTYPE_ADHOC: | |
fffd0934 | 713 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 714 | break; |
f2129354 | 715 | case NL80211_IFTYPE_STATION: |
fffd0934 | 716 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 JB |
717 | break; |
718 | default: | |
04a773ad | 719 | break; |
f2129354 | 720 | } |
667503dd JB |
721 | wdev_unlock(wdev); |
722 | cfg80211_unlock_rdev(rdev); | |
04a773ad | 723 | #endif |
2a783c13 | 724 | break; |
704232c2 JB |
725 | case NETDEV_UNREGISTER: |
726 | mutex_lock(&rdev->devlist_mtx); | |
2a783c13 | 727 | if (!list_empty(&wdev->list)) { |
704232c2 | 728 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
2a783c13 | 729 | list_del_init(&wdev->list); |
704232c2 JB |
730 | } |
731 | mutex_unlock(&rdev->devlist_mtx); | |
667503dd | 732 | mutex_destroy(&wdev->mtx); |
fffd0934 JB |
733 | #ifdef CONFIG_WIRELESS_EXT |
734 | kfree(wdev->wext.keys); | |
735 | #endif | |
704232c2 | 736 | break; |
1f87f7d3 | 737 | case NETDEV_PRE_UP: |
0b20633d JB |
738 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
739 | return notifier_from_errno(-EOPNOTSUPP); | |
1f87f7d3 JB |
740 | if (rfkill_blocked(rdev->rfkill)) |
741 | return notifier_from_errno(-ERFKILL); | |
742 | break; | |
704232c2 JB |
743 | } |
744 | ||
1f87f7d3 | 745 | return NOTIFY_DONE; |
704232c2 JB |
746 | } |
747 | ||
748 | static struct notifier_block cfg80211_netdev_notifier = { | |
749 | .notifier_call = cfg80211_netdev_notifier_call, | |
750 | }; | |
751 | ||
463d0183 JB |
752 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
753 | { | |
754 | struct cfg80211_registered_device *rdev; | |
755 | ||
756 | rtnl_lock(); | |
757 | mutex_lock(&cfg80211_mutex); | |
758 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
759 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
760 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
761 | } | |
762 | mutex_unlock(&cfg80211_mutex); | |
763 | rtnl_unlock(); | |
764 | } | |
765 | ||
766 | static struct pernet_operations cfg80211_pernet_ops = { | |
767 | .exit = cfg80211_pernet_exit, | |
768 | }; | |
769 | ||
770 | static int __init cfg80211_init(void) | |
704232c2 | 771 | { |
b2e1b302 LR |
772 | int err; |
773 | ||
463d0183 JB |
774 | err = register_pernet_device(&cfg80211_pernet_ops); |
775 | if (err) | |
776 | goto out_fail_pernet; | |
777 | ||
b2e1b302 | 778 | err = wiphy_sysfs_init(); |
704232c2 JB |
779 | if (err) |
780 | goto out_fail_sysfs; | |
781 | ||
782 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
783 | if (err) | |
784 | goto out_fail_notifier; | |
785 | ||
55682965 JB |
786 | err = nl80211_init(); |
787 | if (err) | |
788 | goto out_fail_nl80211; | |
789 | ||
704232c2 JB |
790 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
791 | ||
b2e1b302 LR |
792 | err = regulatory_init(); |
793 | if (err) | |
794 | goto out_fail_reg; | |
795 | ||
704232c2 JB |
796 | return 0; |
797 | ||
b2e1b302 LR |
798 | out_fail_reg: |
799 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
800 | out_fail_nl80211: |
801 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
802 | out_fail_notifier: |
803 | wiphy_sysfs_exit(); | |
804 | out_fail_sysfs: | |
463d0183 JB |
805 | unregister_pernet_device(&cfg80211_pernet_ops); |
806 | out_fail_pernet: | |
704232c2 JB |
807 | return err; |
808 | } | |
3a462465 | 809 | subsys_initcall(cfg80211_init); |
704232c2 JB |
810 | |
811 | static void cfg80211_exit(void) | |
812 | { | |
813 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 814 | nl80211_exit(); |
704232c2 JB |
815 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
816 | wiphy_sysfs_exit(); | |
b2e1b302 | 817 | regulatory_exit(); |
463d0183 | 818 | unregister_pernet_device(&cfg80211_pernet_ops); |
704232c2 JB |
819 | } |
820 | module_exit(cfg80211_exit); |