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" |
704232c2 JB |
22 | |
23 | /* name for sysfs, %d is appended */ | |
24 | #define PHY_NAME "phy" | |
25 | ||
26 | MODULE_AUTHOR("Johannes Berg"); | |
27 | MODULE_LICENSE("GPL"); | |
28 | MODULE_DESCRIPTION("wireless configuration support"); | |
29 | ||
30 | /* RCU might be appropriate here since we usually | |
31 | * only read the list, and that can happen quite | |
32 | * often because we need to do it for each command */ | |
79c97e97 | 33 | LIST_HEAD(cfg80211_rdev_list); |
a1794390 LR |
34 | |
35 | /* | |
79c97e97 | 36 | * This is used to protect the cfg80211_rdev_list, cfg80211_regdomain, |
e38f8a7a LR |
37 | * country_ie_regdomain, the reg_beacon_list and the the last regulatory |
38 | * request receipt (last_request). | |
a1794390 LR |
39 | */ |
40 | DEFINE_MUTEX(cfg80211_mutex); | |
704232c2 JB |
41 | |
42 | /* for debugfs */ | |
43 | static struct dentry *ieee80211_debugfs_dir; | |
44 | ||
806a9e39 | 45 | /* requires cfg80211_mutex to be held! */ |
79c97e97 | 46 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 47 | { |
79c97e97 | 48 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 49 | |
85fd129a LR |
50 | if (!wiphy_idx_valid(wiphy_idx)) |
51 | return NULL; | |
52 | ||
761cf7ec LR |
53 | assert_cfg80211_lock(); |
54 | ||
79c97e97 JB |
55 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
56 | if (rdev->wiphy_idx == wiphy_idx) { | |
57 | result = rdev; | |
55682965 JB |
58 | break; |
59 | } | |
60 | } | |
61 | ||
62 | return result; | |
63 | } | |
64 | ||
806a9e39 LR |
65 | int get_wiphy_idx(struct wiphy *wiphy) |
66 | { | |
79c97e97 | 67 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
68 | if (!wiphy) |
69 | return WIPHY_IDX_STALE; | |
79c97e97 JB |
70 | rdev = wiphy_to_dev(wiphy); |
71 | return rdev->wiphy_idx; | |
806a9e39 LR |
72 | } |
73 | ||
79c97e97 | 74 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
75 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
76 | { | |
79c97e97 | 77 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
78 | |
79 | if (!wiphy_idx_valid(wiphy_idx)) | |
80 | return NULL; | |
81 | ||
82 | assert_cfg80211_lock(); | |
83 | ||
79c97e97 JB |
84 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
85 | if (!rdev) | |
806a9e39 | 86 | return NULL; |
79c97e97 | 87 | return &rdev->wiphy; |
806a9e39 LR |
88 | } |
89 | ||
a1794390 | 90 | /* requires cfg80211_mutex to be held! */ |
4bbf4d56 | 91 | struct cfg80211_registered_device * |
79c97e97 | 92 | __cfg80211_rdev_from_info(struct genl_info *info) |
55682965 JB |
93 | { |
94 | int ifindex; | |
b5850a7a | 95 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
55682965 JB |
96 | struct net_device *dev; |
97 | int err = -EINVAL; | |
98 | ||
761cf7ec LR |
99 | assert_cfg80211_lock(); |
100 | ||
55682965 | 101 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
79c97e97 | 102 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
55682965 JB |
103 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
104 | err = -ENODEV; | |
105 | } | |
106 | ||
107 | if (info->attrs[NL80211_ATTR_IFINDEX]) { | |
108 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); | |
109 | dev = dev_get_by_index(&init_net, ifindex); | |
110 | if (dev) { | |
111 | if (dev->ieee80211_ptr) | |
112 | byifidx = | |
113 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); | |
114 | dev_put(dev); | |
115 | } | |
116 | err = -ENODEV; | |
117 | } | |
118 | ||
b5850a7a LR |
119 | if (bywiphyidx && byifidx) { |
120 | if (bywiphyidx != byifidx) | |
55682965 JB |
121 | return ERR_PTR(-EINVAL); |
122 | else | |
b5850a7a | 123 | return bywiphyidx; /* == byifidx */ |
55682965 | 124 | } |
b5850a7a LR |
125 | if (bywiphyidx) |
126 | return bywiphyidx; | |
55682965 JB |
127 | |
128 | if (byifidx) | |
129 | return byifidx; | |
130 | ||
131 | return ERR_PTR(err); | |
132 | } | |
133 | ||
134 | struct cfg80211_registered_device * | |
135 | cfg80211_get_dev_from_info(struct genl_info *info) | |
136 | { | |
79c97e97 | 137 | struct cfg80211_registered_device *rdev; |
55682965 | 138 | |
a1794390 | 139 | mutex_lock(&cfg80211_mutex); |
79c97e97 | 140 | rdev = __cfg80211_rdev_from_info(info); |
55682965 JB |
141 | |
142 | /* if it is not an error we grab the lock on | |
143 | * it to assure it won't be going away while | |
144 | * we operate on it */ | |
79c97e97 JB |
145 | if (!IS_ERR(rdev)) |
146 | mutex_lock(&rdev->mtx); | |
55682965 | 147 | |
a1794390 | 148 | mutex_unlock(&cfg80211_mutex); |
55682965 | 149 | |
79c97e97 | 150 | return rdev; |
55682965 JB |
151 | } |
152 | ||
153 | struct cfg80211_registered_device * | |
154 | cfg80211_get_dev_from_ifindex(int ifindex) | |
155 | { | |
79c97e97 | 156 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
55682965 JB |
157 | struct net_device *dev; |
158 | ||
a1794390 | 159 | mutex_lock(&cfg80211_mutex); |
55682965 JB |
160 | dev = dev_get_by_index(&init_net, ifindex); |
161 | if (!dev) | |
162 | goto out; | |
163 | if (dev->ieee80211_ptr) { | |
79c97e97 JB |
164 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
165 | mutex_lock(&rdev->mtx); | |
55682965 | 166 | } else |
79c97e97 | 167 | rdev = ERR_PTR(-ENODEV); |
55682965 JB |
168 | dev_put(dev); |
169 | out: | |
a1794390 | 170 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 171 | return rdev; |
55682965 JB |
172 | } |
173 | ||
4bbf4d56 | 174 | /* requires cfg80211_mutex to be held */ |
55682965 JB |
175 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
176 | char *newname) | |
177 | { | |
79c97e97 | 178 | struct cfg80211_registered_device *rdev2; |
b5850a7a | 179 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 180 | |
4bbf4d56 | 181 | assert_cfg80211_lock(); |
2940bb69 | 182 | |
55682965 | 183 | /* prohibit calling the thing phy%d when %d is not its number */ |
b5850a7a LR |
184 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); |
185 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
186 | /* count number of places needed to print wiphy_idx */ | |
55682965 | 187 | digits = 1; |
b5850a7a | 188 | while (wiphy_idx /= 10) |
55682965 JB |
189 | digits++; |
190 | /* | |
191 | * deny the name if it is phy<idx> where <idx> is printed | |
192 | * without leading zeroes. taken == strlen(newname) here | |
193 | */ | |
194 | if (taken == strlen(PHY_NAME) + digits) | |
4bbf4d56 | 195 | return -EINVAL; |
2940bb69 EB |
196 | } |
197 | ||
198 | ||
199 | /* Ignore nop renames */ | |
2940bb69 | 200 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 201 | return 0; |
2940bb69 EB |
202 | |
203 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
204 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
205 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
4bbf4d56 | 206 | return -EINVAL; |
55682965 | 207 | |
55682965 JB |
208 | result = device_rename(&rdev->wiphy.dev, newname); |
209 | if (result) | |
4bbf4d56 | 210 | return result; |
55682965 | 211 | |
33c0360b JB |
212 | if (rdev->wiphy.debugfsdir && |
213 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
214 | rdev->wiphy.debugfsdir, |
215 | rdev->wiphy.debugfsdir->d_parent, | |
216 | newname)) | |
217 | printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", | |
218 | newname); | |
219 | ||
4bbf4d56 | 220 | nl80211_notify_dev_rename(rdev); |
55682965 | 221 | |
4bbf4d56 | 222 | return 0; |
55682965 JB |
223 | } |
224 | ||
1f87f7d3 JB |
225 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
226 | { | |
79c97e97 | 227 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 228 | |
79c97e97 | 229 | rdev->ops->rfkill_poll(&rdev->wiphy); |
1f87f7d3 JB |
230 | } |
231 | ||
232 | static int cfg80211_rfkill_set_block(void *data, bool blocked) | |
233 | { | |
79c97e97 | 234 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
235 | struct wireless_dev *wdev; |
236 | ||
237 | if (!blocked) | |
238 | return 0; | |
239 | ||
240 | rtnl_lock(); | |
79c97e97 | 241 | mutex_lock(&rdev->devlist_mtx); |
1f87f7d3 | 242 | |
79c97e97 | 243 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
1f87f7d3 JB |
244 | dev_close(wdev->netdev); |
245 | ||
79c97e97 | 246 | mutex_unlock(&rdev->devlist_mtx); |
1f87f7d3 JB |
247 | rtnl_unlock(); |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
253 | { | |
79c97e97 | 254 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 255 | |
79c97e97 JB |
256 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
257 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
258 | } |
259 | ||
667503dd JB |
260 | static void cfg80211_process_events(struct wireless_dev *wdev) |
261 | { | |
262 | struct cfg80211_event *ev; | |
263 | unsigned long flags; | |
264 | ||
265 | spin_lock_irqsave(&wdev->event_lock, flags); | |
266 | while (!list_empty(&wdev->event_list)) { | |
267 | ev = list_first_entry(&wdev->event_list, | |
268 | struct cfg80211_event, list); | |
269 | list_del(&ev->list); | |
270 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
271 | ||
272 | wdev_lock(wdev); | |
273 | switch (ev->type) { | |
274 | case EVENT_CONNECT_RESULT: | |
275 | __cfg80211_connect_result( | |
276 | wdev->netdev, ev->cr.bssid, | |
277 | ev->cr.req_ie, ev->cr.req_ie_len, | |
278 | ev->cr.resp_ie, ev->cr.resp_ie_len, | |
279 | ev->cr.status, | |
280 | ev->cr.status == WLAN_STATUS_SUCCESS); | |
281 | break; | |
282 | case EVENT_ROAMED: | |
283 | __cfg80211_roamed(wdev, ev->rm.bssid, | |
284 | ev->rm.req_ie, ev->rm.req_ie_len, | |
285 | ev->rm.resp_ie, ev->rm.resp_ie_len); | |
286 | break; | |
287 | case EVENT_DISCONNECTED: | |
288 | __cfg80211_disconnected(wdev->netdev, | |
289 | ev->dc.ie, ev->dc.ie_len, | |
290 | ev->dc.reason, true); | |
291 | break; | |
292 | case EVENT_IBSS_JOINED: | |
293 | __cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid); | |
294 | break; | |
295 | } | |
296 | wdev_unlock(wdev); | |
297 | ||
298 | kfree(ev); | |
299 | ||
300 | spin_lock_irqsave(&wdev->event_lock, flags); | |
301 | } | |
302 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
303 | } | |
304 | ||
305 | static void cfg80211_event_work(struct work_struct *work) | |
306 | { | |
307 | struct cfg80211_registered_device *rdev; | |
308 | struct wireless_dev *wdev; | |
309 | ||
310 | rdev = container_of(work, struct cfg80211_registered_device, | |
311 | event_work); | |
312 | ||
313 | rtnl_lock(); | |
314 | cfg80211_lock_rdev(rdev); | |
315 | mutex_lock(&rdev->devlist_mtx); | |
316 | ||
317 | list_for_each_entry(wdev, &rdev->netdev_list, list) | |
318 | cfg80211_process_events(wdev); | |
319 | ||
320 | mutex_unlock(&rdev->devlist_mtx); | |
321 | cfg80211_unlock_rdev(rdev); | |
322 | rtnl_unlock(); | |
323 | } | |
324 | ||
704232c2 JB |
325 | /* exported functions */ |
326 | ||
3dcf670b | 327 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 328 | { |
638af073 DC |
329 | static int wiphy_counter; |
330 | ||
79c97e97 | 331 | struct cfg80211_registered_device *rdev; |
704232c2 JB |
332 | int alloc_size; |
333 | ||
0b20633d JB |
334 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
335 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
336 | WARN_ON(ops->connect && !ops->disconnect); | |
337 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
338 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
339 | WARN_ON(ops->add_station && !ops->del_station); | |
340 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
41ade00f | 341 | |
79c97e97 | 342 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 343 | |
79c97e97 JB |
344 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
345 | if (!rdev) | |
704232c2 JB |
346 | return NULL; |
347 | ||
79c97e97 | 348 | rdev->ops = ops; |
704232c2 | 349 | |
a1794390 | 350 | mutex_lock(&cfg80211_mutex); |
704232c2 | 351 | |
79c97e97 | 352 | rdev->wiphy_idx = wiphy_counter++; |
a4d73ee1 | 353 | |
79c97e97 | 354 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
638af073 | 355 | wiphy_counter--; |
a1794390 | 356 | mutex_unlock(&cfg80211_mutex); |
704232c2 | 357 | /* ugh, wrapped! */ |
79c97e97 | 358 | kfree(rdev); |
704232c2 JB |
359 | return NULL; |
360 | } | |
704232c2 | 361 | |
a1794390 | 362 | mutex_unlock(&cfg80211_mutex); |
638af073 | 363 | |
704232c2 | 364 | /* give it a proper name */ |
79c97e97 JB |
365 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
366 | ||
367 | mutex_init(&rdev->mtx); | |
368 | mutex_init(&rdev->devlist_mtx); | |
369 | INIT_LIST_HEAD(&rdev->netdev_list); | |
370 | spin_lock_init(&rdev->bss_lock); | |
371 | INIT_LIST_HEAD(&rdev->bss_list); | |
372 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
373 | ||
374 | device_initialize(&rdev->wiphy.dev); | |
375 | rdev->wiphy.dev.class = &ieee80211_class; | |
376 | rdev->wiphy.dev.platform_data = rdev; | |
377 | ||
378 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; | |
379 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
380 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
381 | &rdev->rfkill_ops, rdev); | |
382 | ||
383 | if (!rdev->rfkill) { | |
384 | kfree(rdev); | |
1f87f7d3 JB |
385 | return NULL; |
386 | } | |
387 | ||
79c97e97 JB |
388 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
389 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
390 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 391 | |
b9a5f8ca JM |
392 | /* |
393 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
394 | * Fragmentation and RTS threshold are disabled by default with the | |
395 | * special -1 value. | |
396 | */ | |
79c97e97 JB |
397 | rdev->wiphy.retry_short = 7; |
398 | rdev->wiphy.retry_long = 4; | |
399 | rdev->wiphy.frag_threshold = (u32) -1; | |
400 | rdev->wiphy.rts_threshold = (u32) -1; | |
b9a5f8ca | 401 | |
79c97e97 | 402 | return &rdev->wiphy; |
704232c2 JB |
403 | } |
404 | EXPORT_SYMBOL(wiphy_new); | |
405 | ||
406 | int wiphy_register(struct wiphy *wiphy) | |
407 | { | |
79c97e97 | 408 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 409 | int res; |
8318d78a JB |
410 | enum ieee80211_band band; |
411 | struct ieee80211_supported_band *sband; | |
412 | bool have_band = false; | |
413 | int i; | |
f59ac048 LR |
414 | u16 ifmodes = wiphy->interface_modes; |
415 | ||
416 | /* sanity check ifmodes */ | |
417 | WARN_ON(!ifmodes); | |
418 | ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; | |
419 | if (WARN_ON(ifmodes != wiphy->interface_modes)) | |
420 | wiphy->interface_modes = ifmodes; | |
8318d78a JB |
421 | |
422 | /* sanity check supported bands/channels */ | |
423 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
424 | sband = wiphy->bands[band]; | |
425 | if (!sband) | |
426 | continue; | |
427 | ||
428 | sband->band = band; | |
429 | ||
881d948c JB |
430 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
431 | return -EINVAL; | |
432 | ||
433 | /* | |
434 | * Since we use a u32 for rate bitmaps in | |
435 | * ieee80211_get_response_rate, we cannot | |
436 | * have more than 32 legacy rates. | |
437 | */ | |
438 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 439 | return -EINVAL; |
8318d78a JB |
440 | |
441 | for (i = 0; i < sband->n_channels; i++) { | |
442 | sband->channels[i].orig_flags = | |
443 | sband->channels[i].flags; | |
444 | sband->channels[i].orig_mag = | |
445 | sband->channels[i].max_antenna_gain; | |
446 | sband->channels[i].orig_mpwr = | |
447 | sband->channels[i].max_power; | |
448 | sband->channels[i].band = band; | |
449 | } | |
450 | ||
451 | have_band = true; | |
452 | } | |
453 | ||
454 | if (!have_band) { | |
455 | WARN_ON(1); | |
456 | return -EINVAL; | |
457 | } | |
458 | ||
459 | /* check and set up bitrates */ | |
460 | ieee80211_set_bitrate_flags(wiphy); | |
461 | ||
79c97e97 | 462 | res = device_add(&rdev->wiphy.dev); |
704232c2 | 463 | if (res) |
2f0accc1 | 464 | return res; |
704232c2 | 465 | |
79c97e97 | 466 | res = rfkill_register(rdev->rfkill); |
1f87f7d3 JB |
467 | if (res) |
468 | goto out_rm_dev; | |
469 | ||
2f0accc1 JB |
470 | mutex_lock(&cfg80211_mutex); |
471 | ||
472 | /* set up regulatory info */ | |
473 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); | |
474 | ||
79c97e97 | 475 | list_add(&rdev->list, &cfg80211_rdev_list); |
704232c2 | 476 | |
2f0accc1 JB |
477 | mutex_unlock(&cfg80211_mutex); |
478 | ||
704232c2 | 479 | /* add to debugfs */ |
79c97e97 JB |
480 | rdev->wiphy.debugfsdir = |
481 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 482 | ieee80211_debugfs_dir); |
79c97e97 JB |
483 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
484 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 485 | |
73d54c9e LR |
486 | if (wiphy->custom_regulatory) { |
487 | struct regulatory_request request; | |
488 | ||
489 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
490 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
491 | request.alpha2[0] = '9'; | |
492 | request.alpha2[1] = '9'; | |
493 | ||
494 | nl80211_send_reg_change_event(&request); | |
495 | } | |
496 | ||
79c97e97 | 497 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 498 | |
2f0accc1 | 499 | return 0; |
1f87f7d3 JB |
500 | |
501 | out_rm_dev: | |
79c97e97 | 502 | device_del(&rdev->wiphy.dev); |
704232c2 JB |
503 | return res; |
504 | } | |
505 | EXPORT_SYMBOL(wiphy_register); | |
506 | ||
1f87f7d3 JB |
507 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
508 | { | |
79c97e97 | 509 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 510 | |
79c97e97 | 511 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 512 | return; |
79c97e97 JB |
513 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
514 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
515 | } |
516 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
517 | ||
518 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
519 | { | |
79c97e97 | 520 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 521 | |
79c97e97 | 522 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
523 | } |
524 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
525 | ||
704232c2 JB |
526 | void wiphy_unregister(struct wiphy *wiphy) |
527 | { | |
79c97e97 | 528 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 529 | |
79c97e97 | 530 | rfkill_unregister(rdev->rfkill); |
1f87f7d3 | 531 | |
f16bfc1c | 532 | /* protect the device list */ |
a1794390 | 533 | mutex_lock(&cfg80211_mutex); |
704232c2 | 534 | |
79c97e97 | 535 | BUG_ON(!list_empty(&rdev->netdev_list)); |
f16bfc1c JB |
536 | |
537 | /* | |
79c97e97 | 538 | * Try to grab rdev->mtx. If a command is still in progress, |
f16bfc1c JB |
539 | * hopefully the driver will refuse it since it's tearing |
540 | * down the device already. We wait for this command to complete | |
541 | * before unlinking the item from the list. | |
542 | * Note: as codified by the BUG_ON above we cannot get here if | |
543 | * a virtual interface is still associated. Hence, we can only | |
544 | * get to lock contention here if userspace issues a command | |
545 | * that identified the hardware by wiphy index. | |
546 | */ | |
79c97e97 | 547 | mutex_lock(&rdev->mtx); |
f16bfc1c | 548 | /* unlock again before freeing */ |
79c97e97 | 549 | mutex_unlock(&rdev->mtx); |
704232c2 | 550 | |
79c97e97 JB |
551 | cancel_work_sync(&rdev->conn_work); |
552 | cancel_work_sync(&rdev->scan_done_wk); | |
553 | kfree(rdev->scan_req); | |
554 | flush_work(&rdev->event_work); | |
6829c878 | 555 | |
79c97e97 | 556 | cfg80211_debugfs_rdev_del(rdev); |
1ac61302 | 557 | |
3f2355cb LR |
558 | /* If this device got a regulatory hint tell core its |
559 | * free to listen now to a new shiny device regulatory hint */ | |
560 | reg_device_remove(wiphy); | |
561 | ||
79c97e97 JB |
562 | list_del(&rdev->list); |
563 | device_del(&rdev->wiphy.dev); | |
564 | debugfs_remove(rdev->wiphy.debugfsdir); | |
704232c2 | 565 | |
a1794390 | 566 | mutex_unlock(&cfg80211_mutex); |
704232c2 JB |
567 | } |
568 | EXPORT_SYMBOL(wiphy_unregister); | |
569 | ||
79c97e97 | 570 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 571 | { |
2a519311 | 572 | struct cfg80211_internal_bss *scan, *tmp; |
79c97e97 JB |
573 | rfkill_destroy(rdev->rfkill); |
574 | mutex_destroy(&rdev->mtx); | |
575 | mutex_destroy(&rdev->devlist_mtx); | |
576 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) | |
78c1c7e1 | 577 | cfg80211_put_bss(&scan->pub); |
79c97e97 | 578 | kfree(rdev); |
704232c2 JB |
579 | } |
580 | ||
581 | void wiphy_free(struct wiphy *wiphy) | |
582 | { | |
583 | put_device(&wiphy->dev); | |
584 | } | |
585 | EXPORT_SYMBOL(wiphy_free); | |
586 | ||
1f87f7d3 JB |
587 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
588 | { | |
79c97e97 | 589 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 590 | |
79c97e97 JB |
591 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
592 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
593 | } |
594 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
595 | ||
704232c2 JB |
596 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
597 | unsigned long state, | |
598 | void *ndev) | |
599 | { | |
600 | struct net_device *dev = ndev; | |
2a783c13 | 601 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 JB |
602 | struct cfg80211_registered_device *rdev; |
603 | ||
2a783c13 | 604 | if (!wdev) |
1f87f7d3 | 605 | return NOTIFY_DONE; |
704232c2 | 606 | |
2a783c13 | 607 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 608 | |
2a783c13 | 609 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 610 | |
704232c2 JB |
611 | switch (state) { |
612 | case NETDEV_REGISTER: | |
667503dd JB |
613 | mutex_init(&wdev->mtx); |
614 | INIT_LIST_HEAD(&wdev->event_list); | |
615 | spin_lock_init(&wdev->event_lock); | |
704232c2 | 616 | mutex_lock(&rdev->devlist_mtx); |
2a783c13 | 617 | list_add(&wdev->list, &rdev->netdev_list); |
704232c2 JB |
618 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
619 | "phy80211")) { | |
620 | printk(KERN_ERR "wireless: failed to add phy80211 " | |
621 | "symlink to netdev!\n"); | |
622 | } | |
2a783c13 | 623 | wdev->netdev = dev; |
b23aa676 | 624 | wdev->sme_state = CFG80211_SME_IDLE; |
bc92afd9 | 625 | mutex_unlock(&rdev->devlist_mtx); |
08645126 | 626 | #ifdef CONFIG_WIRELESS_EXT |
2a783c13 JB |
627 | wdev->wext.default_key = -1; |
628 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 629 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
bc92afd9 JB |
630 | wdev->wext.ps = CONFIG_CFG80211_DEFAULT_PS_VALUE; |
631 | wdev->wext.ps_timeout = 500; | |
632 | if (rdev->ops->set_power_mgmt) | |
633 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, | |
634 | wdev->wext.ps, | |
635 | wdev->wext.ps_timeout)) { | |
636 | /* assume this means it's off */ | |
637 | wdev->wext.ps = false; | |
638 | } | |
08645126 | 639 | #endif |
704232c2 | 640 | break; |
04a773ad | 641 | case NETDEV_GOING_DOWN: |
b23aa676 SO |
642 | switch (wdev->iftype) { |
643 | case NL80211_IFTYPE_ADHOC: | |
644 | cfg80211_leave_ibss(rdev, dev, true); | |
645 | break; | |
646 | case NL80211_IFTYPE_STATION: | |
667503dd | 647 | wdev_lock(wdev); |
f2129354 JB |
648 | #ifdef CONFIG_WIRELESS_EXT |
649 | kfree(wdev->wext.ie); | |
650 | wdev->wext.ie = NULL; | |
651 | wdev->wext.ie_len = 0; | |
0eb14647 | 652 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
f2129354 | 653 | #endif |
667503dd JB |
654 | __cfg80211_disconnect(rdev, dev, |
655 | WLAN_REASON_DEAUTH_LEAVING, true); | |
19957bb3 | 656 | cfg80211_mlme_down(rdev, dev); |
667503dd | 657 | wdev_unlock(wdev); |
b23aa676 SO |
658 | break; |
659 | default: | |
660 | break; | |
661 | } | |
04a773ad JB |
662 | break; |
663 | case NETDEV_UP: | |
664 | #ifdef CONFIG_WIRELESS_EXT | |
667503dd JB |
665 | cfg80211_lock_rdev(rdev); |
666 | wdev_lock(wdev); | |
f2129354 JB |
667 | switch (wdev->iftype) { |
668 | case NL80211_IFTYPE_ADHOC: | |
fffd0934 | 669 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 670 | break; |
f2129354 | 671 | case NL80211_IFTYPE_STATION: |
fffd0934 | 672 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 JB |
673 | break; |
674 | default: | |
04a773ad | 675 | break; |
f2129354 | 676 | } |
667503dd JB |
677 | wdev_unlock(wdev); |
678 | cfg80211_unlock_rdev(rdev); | |
04a773ad | 679 | #endif |
2a783c13 | 680 | break; |
704232c2 JB |
681 | case NETDEV_UNREGISTER: |
682 | mutex_lock(&rdev->devlist_mtx); | |
2a783c13 | 683 | if (!list_empty(&wdev->list)) { |
704232c2 | 684 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
2a783c13 | 685 | list_del_init(&wdev->list); |
704232c2 JB |
686 | } |
687 | mutex_unlock(&rdev->devlist_mtx); | |
667503dd | 688 | mutex_destroy(&wdev->mtx); |
fffd0934 JB |
689 | #ifdef CONFIG_WIRELESS_EXT |
690 | kfree(wdev->wext.keys); | |
691 | #endif | |
704232c2 | 692 | break; |
1f87f7d3 | 693 | case NETDEV_PRE_UP: |
0b20633d JB |
694 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
695 | return notifier_from_errno(-EOPNOTSUPP); | |
1f87f7d3 JB |
696 | if (rfkill_blocked(rdev->rfkill)) |
697 | return notifier_from_errno(-ERFKILL); | |
698 | break; | |
704232c2 JB |
699 | } |
700 | ||
1f87f7d3 | 701 | return NOTIFY_DONE; |
704232c2 JB |
702 | } |
703 | ||
704 | static struct notifier_block cfg80211_netdev_notifier = { | |
705 | .notifier_call = cfg80211_netdev_notifier_call, | |
706 | }; | |
707 | ||
708 | static int cfg80211_init(void) | |
709 | { | |
b2e1b302 LR |
710 | int err; |
711 | ||
b2e1b302 | 712 | err = wiphy_sysfs_init(); |
704232c2 JB |
713 | if (err) |
714 | goto out_fail_sysfs; | |
715 | ||
716 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
717 | if (err) | |
718 | goto out_fail_notifier; | |
719 | ||
55682965 JB |
720 | err = nl80211_init(); |
721 | if (err) | |
722 | goto out_fail_nl80211; | |
723 | ||
704232c2 JB |
724 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
725 | ||
b2e1b302 LR |
726 | err = regulatory_init(); |
727 | if (err) | |
728 | goto out_fail_reg; | |
729 | ||
704232c2 JB |
730 | return 0; |
731 | ||
b2e1b302 LR |
732 | out_fail_reg: |
733 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
734 | out_fail_nl80211: |
735 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
736 | out_fail_notifier: |
737 | wiphy_sysfs_exit(); | |
738 | out_fail_sysfs: | |
739 | return err; | |
740 | } | |
b2e1b302 | 741 | |
3a462465 | 742 | subsys_initcall(cfg80211_init); |
704232c2 JB |
743 | |
744 | static void cfg80211_exit(void) | |
745 | { | |
746 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 747 | nl80211_exit(); |
704232c2 JB |
748 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
749 | wiphy_sysfs_exit(); | |
b2e1b302 | 750 | regulatory_exit(); |
704232c2 JB |
751 | } |
752 | module_exit(cfg80211_exit); |