Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * This is the linux wireless configuration interface. | |
3 | * | |
5f2aa25e | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
6 | ||
e9c0268f JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
704232c2 JB |
9 | #include <linux/if.h> |
10 | #include <linux/module.h> | |
11 | #include <linux/err.h> | |
704232c2 | 12 | #include <linux/list.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
704232c2 JB |
14 | #include <linux/nl80211.h> |
15 | #include <linux/debugfs.h> | |
16 | #include <linux/notifier.h> | |
17 | #include <linux/device.h> | |
16a832e7 | 18 | #include <linux/etherdevice.h> |
1f87f7d3 | 19 | #include <linux/rtnetlink.h> |
d43c36dc | 20 | #include <linux/sched.h> |
704232c2 JB |
21 | #include <net/genetlink.h> |
22 | #include <net/cfg80211.h> | |
55682965 | 23 | #include "nl80211.h" |
704232c2 JB |
24 | #include "core.h" |
25 | #include "sysfs.h" | |
1ac61302 | 26 | #include "debugfs.h" |
a9a11622 | 27 | #include "wext-compat.h" |
4890e3be | 28 | #include "ethtool.h" |
e35e4d28 | 29 | #include "rdev-ops.h" |
704232c2 JB |
30 | |
31 | /* name for sysfs, %d is appended */ | |
32 | #define PHY_NAME "phy" | |
33 | ||
34 | MODULE_AUTHOR("Johannes Berg"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | MODULE_DESCRIPTION("wireless configuration support"); | |
37 | ||
5f2aa25e | 38 | /* RCU-protected (and cfg80211_mutex for writers) */ |
79c97e97 | 39 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 40 | int cfg80211_rdev_list_generation; |
a1794390 | 41 | |
a1794390 | 42 | DEFINE_MUTEX(cfg80211_mutex); |
704232c2 JB |
43 | |
44 | /* for debugfs */ | |
45 | static struct dentry *ieee80211_debugfs_dir; | |
46 | ||
e60d7443 AB |
47 | /* for the cleanup, scan and event works */ |
48 | struct workqueue_struct *cfg80211_wq; | |
49 | ||
40db6c77 AK |
50 | static bool cfg80211_disable_40mhz_24ghz; |
51 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
52 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
53 | "Disable 40MHz support in the 2.4GHz band"); | |
54 | ||
806a9e39 | 55 | /* requires cfg80211_mutex to be held! */ |
79c97e97 | 56 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 57 | { |
79c97e97 | 58 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 59 | |
761cf7ec LR |
60 | assert_cfg80211_lock(); |
61 | ||
79c97e97 JB |
62 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
63 | if (rdev->wiphy_idx == wiphy_idx) { | |
64 | result = rdev; | |
55682965 JB |
65 | break; |
66 | } | |
67 | } | |
68 | ||
69 | return result; | |
70 | } | |
71 | ||
806a9e39 LR |
72 | int get_wiphy_idx(struct wiphy *wiphy) |
73 | { | |
f4173766 JB |
74 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
75 | ||
79c97e97 | 76 | return rdev->wiphy_idx; |
806a9e39 LR |
77 | } |
78 | ||
79c97e97 | 79 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
80 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
81 | { | |
79c97e97 | 82 | struct cfg80211_registered_device *rdev; |
806a9e39 | 83 | |
806a9e39 LR |
84 | assert_cfg80211_lock(); |
85 | ||
79c97e97 JB |
86 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
87 | if (!rdev) | |
806a9e39 | 88 | return NULL; |
79c97e97 | 89 | return &rdev->wiphy; |
806a9e39 LR |
90 | } |
91 | ||
55682965 | 92 | struct cfg80211_registered_device * |
463d0183 | 93 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
55682965 | 94 | { |
79c97e97 | 95 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
55682965 JB |
96 | struct net_device *dev; |
97 | ||
a1794390 | 98 | mutex_lock(&cfg80211_mutex); |
463d0183 | 99 | dev = dev_get_by_index(net, ifindex); |
55682965 JB |
100 | if (!dev) |
101 | goto out; | |
102 | if (dev->ieee80211_ptr) { | |
79c97e97 JB |
103 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
104 | mutex_lock(&rdev->mtx); | |
55682965 | 105 | } else |
79c97e97 | 106 | rdev = ERR_PTR(-ENODEV); |
55682965 JB |
107 | dev_put(dev); |
108 | out: | |
a1794390 | 109 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 110 | return rdev; |
55682965 JB |
111 | } |
112 | ||
4bbf4d56 | 113 | /* requires cfg80211_mutex to be held */ |
55682965 JB |
114 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
115 | char *newname) | |
116 | { | |
79c97e97 | 117 | struct cfg80211_registered_device *rdev2; |
7623225f | 118 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 119 | |
4bbf4d56 | 120 | assert_cfg80211_lock(); |
2940bb69 | 121 | |
7623225f JB |
122 | /* prohibit calling the thing phy%d when %d is not its number */ |
123 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
124 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
125 | /* count number of places needed to print wiphy_idx */ | |
126 | digits = 1; | |
127 | while (wiphy_idx /= 10) | |
128 | digits++; | |
129 | /* | |
130 | * deny the name if it is phy<idx> where <idx> is printed | |
131 | * without leading zeroes. taken == strlen(newname) here | |
132 | */ | |
133 | if (taken == strlen(PHY_NAME) + digits) | |
134 | return -EINVAL; | |
135 | } | |
136 | ||
137 | ||
2940bb69 | 138 | /* Ignore nop renames */ |
2940bb69 | 139 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 140 | return 0; |
2940bb69 EB |
141 | |
142 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
143 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
144 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
7623225f | 145 | return -EINVAL; |
55682965 | 146 | |
55682965 JB |
147 | result = device_rename(&rdev->wiphy.dev, newname); |
148 | if (result) | |
4bbf4d56 | 149 | return result; |
55682965 | 150 | |
33c0360b JB |
151 | if (rdev->wiphy.debugfsdir && |
152 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
153 | rdev->wiphy.debugfsdir, |
154 | rdev->wiphy.debugfsdir->d_parent, | |
155 | newname)) | |
e9c0268f | 156 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 157 | |
4bbf4d56 | 158 | nl80211_notify_dev_rename(rdev); |
55682965 | 159 | |
4bbf4d56 | 160 | return 0; |
55682965 JB |
161 | } |
162 | ||
463d0183 JB |
163 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
164 | struct net *net) | |
165 | { | |
166 | struct wireless_dev *wdev; | |
167 | int err = 0; | |
168 | ||
5be83de5 | 169 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
170 | return -EOPNOTSUPP; |
171 | ||
89a54e48 | 172 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
ba22fb5b JB |
173 | if (!wdev->netdev) |
174 | continue; | |
463d0183 JB |
175 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
176 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
177 | if (err) | |
178 | break; | |
179 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
180 | } | |
181 | ||
182 | if (err) { | |
183 | /* failed -- clean up to old netns */ | |
184 | net = wiphy_net(&rdev->wiphy); | |
185 | ||
89a54e48 | 186 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
463d0183 | 187 | list) { |
ba22fb5b JB |
188 | if (!wdev->netdev) |
189 | continue; | |
463d0183 JB |
190 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
191 | err = dev_change_net_namespace(wdev->netdev, net, | |
192 | "wlan%d"); | |
193 | WARN_ON(err); | |
194 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
195 | } | |
04600794 JB |
196 | |
197 | return err; | |
463d0183 JB |
198 | } |
199 | ||
200 | wiphy_net_set(&rdev->wiphy, net); | |
201 | ||
04600794 JB |
202 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
203 | WARN_ON(err); | |
204 | ||
205 | return 0; | |
463d0183 JB |
206 | } |
207 | ||
1f87f7d3 JB |
208 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
209 | { | |
79c97e97 | 210 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 211 | |
e35e4d28 | 212 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
213 | } |
214 | ||
215 | static int cfg80211_rfkill_set_block(void *data, bool blocked) | |
216 | { | |
79c97e97 | 217 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
218 | struct wireless_dev *wdev; |
219 | ||
220 | if (!blocked) | |
221 | return 0; | |
222 | ||
223 | rtnl_lock(); | |
79c97e97 | 224 | mutex_lock(&rdev->devlist_mtx); |
1f87f7d3 | 225 | |
98104fde JB |
226 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
227 | if (wdev->netdev) { | |
ba22fb5b | 228 | dev_close(wdev->netdev); |
98104fde JB |
229 | continue; |
230 | } | |
231 | /* otherwise, check iftype */ | |
232 | switch (wdev->iftype) { | |
233 | case NL80211_IFTYPE_P2P_DEVICE: | |
234 | if (!wdev->p2p_started) | |
235 | break; | |
eeb126e9 | 236 | rdev_stop_p2p_device(rdev, wdev); |
98104fde JB |
237 | wdev->p2p_started = false; |
238 | rdev->opencount--; | |
239 | break; | |
240 | default: | |
241 | break; | |
242 | } | |
243 | } | |
1f87f7d3 | 244 | |
79c97e97 | 245 | mutex_unlock(&rdev->devlist_mtx); |
1f87f7d3 JB |
246 | rtnl_unlock(); |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
252 | { | |
79c97e97 | 253 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 254 | |
79c97e97 JB |
255 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
256 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
257 | } |
258 | ||
667503dd JB |
259 | static void cfg80211_event_work(struct work_struct *work) |
260 | { | |
261 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
262 | |
263 | rdev = container_of(work, struct cfg80211_registered_device, | |
264 | event_work); | |
265 | ||
266 | rtnl_lock(); | |
267 | cfg80211_lock_rdev(rdev); | |
667503dd | 268 | |
3d54d255 | 269 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
270 | cfg80211_unlock_rdev(rdev); |
271 | rtnl_unlock(); | |
272 | } | |
273 | ||
704232c2 JB |
274 | /* exported functions */ |
275 | ||
3dcf670b | 276 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 277 | { |
638af073 | 278 | static int wiphy_counter; |
7623225f JB |
279 | |
280 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
281 | int alloc_size; |
282 | ||
0b20633d JB |
283 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
284 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
285 | WARN_ON(ops->connect && !ops->disconnect); | |
286 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
287 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
288 | WARN_ON(ops->add_station && !ops->del_station); | |
289 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 290 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 291 | |
79c97e97 | 292 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 293 | |
79c97e97 JB |
294 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
295 | if (!rdev) | |
704232c2 JB |
296 | return NULL; |
297 | ||
79c97e97 | 298 | rdev->ops = ops; |
704232c2 | 299 | |
a1794390 | 300 | mutex_lock(&cfg80211_mutex); |
704232c2 | 301 | |
79c97e97 | 302 | rdev->wiphy_idx = wiphy_counter++; |
a4d73ee1 | 303 | |
f4173766 | 304 | if (unlikely(rdev->wiphy_idx < 0)) { |
638af073 | 305 | wiphy_counter--; |
a1794390 | 306 | mutex_unlock(&cfg80211_mutex); |
7623225f | 307 | /* ugh, wrapped! */ |
79c97e97 | 308 | kfree(rdev); |
704232c2 JB |
309 | return NULL; |
310 | } | |
704232c2 | 311 | |
5a254ffe | 312 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 313 | |
7623225f JB |
314 | /* give it a proper name */ |
315 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
316 | ||
79c97e97 JB |
317 | mutex_init(&rdev->mtx); |
318 | mutex_init(&rdev->devlist_mtx); | |
c10841ca | 319 | mutex_init(&rdev->sched_scan_mtx); |
89a54e48 | 320 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
321 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
322 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
323 | spin_lock_init(&rdev->bss_lock); |
324 | INIT_LIST_HEAD(&rdev->bss_list); | |
325 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 326 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
327 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
328 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
329 | #ifdef CONFIG_CFG80211_WEXT |
330 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
331 | #endif | |
332 | ||
79c97e97 JB |
333 | device_initialize(&rdev->wiphy.dev); |
334 | rdev->wiphy.dev.class = &ieee80211_class; | |
335 | rdev->wiphy.dev.platform_data = rdev; | |
336 | ||
5be83de5 JB |
337 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
338 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
339 | #endif | |
16cb9d42 | 340 | |
463d0183 JB |
341 | wiphy_net_set(&rdev->wiphy, &init_net); |
342 | ||
79c97e97 JB |
343 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
344 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
345 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
346 | &rdev->rfkill_ops, rdev); | |
347 | ||
348 | if (!rdev->rfkill) { | |
349 | kfree(rdev); | |
1f87f7d3 JB |
350 | return NULL; |
351 | } | |
352 | ||
79c97e97 JB |
353 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
354 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
355 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 356 | |
ad002395 JB |
357 | init_waitqueue_head(&rdev->dev_wait); |
358 | ||
b9a5f8ca JM |
359 | /* |
360 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
361 | * Fragmentation and RTS threshold are disabled by default with the | |
362 | * special -1 value. | |
363 | */ | |
79c97e97 JB |
364 | rdev->wiphy.retry_short = 7; |
365 | rdev->wiphy.retry_long = 4; | |
366 | rdev->wiphy.frag_threshold = (u32) -1; | |
367 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 368 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 369 | |
50640f16 JB |
370 | rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH | |
371 | NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; | |
15d6030b | 372 | |
79c97e97 | 373 | return &rdev->wiphy; |
704232c2 JB |
374 | } |
375 | EXPORT_SYMBOL(wiphy_new); | |
376 | ||
7527a782 JB |
377 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
378 | { | |
379 | const struct ieee80211_iface_combination *c; | |
380 | int i, j; | |
381 | ||
7527a782 JB |
382 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
383 | u32 cnt = 0; | |
384 | u16 all_iftypes = 0; | |
385 | ||
386 | c = &wiphy->iface_combinations[i]; | |
387 | ||
11c4a075 SW |
388 | /* |
389 | * Combinations with just one interface aren't real, | |
390 | * however we make an exception for DFS. | |
391 | */ | |
392 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
393 | return -EINVAL; |
394 | ||
395 | /* Need at least one channel */ | |
396 | if (WARN_ON(!c->num_different_channels)) | |
397 | return -EINVAL; | |
398 | ||
d4e50c59 MK |
399 | /* |
400 | * Put a sane limit on maximum number of different | |
401 | * channels to simplify channel accounting code. | |
402 | */ | |
403 | if (WARN_ON(c->num_different_channels > | |
404 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
405 | return -EINVAL; | |
406 | ||
11c4a075 SW |
407 | /* DFS only works on one channel. */ |
408 | if (WARN_ON(c->radar_detect_widths && | |
409 | (c->num_different_channels > 1))) | |
410 | return -EINVAL; | |
411 | ||
7527a782 JB |
412 | if (WARN_ON(!c->n_limits)) |
413 | return -EINVAL; | |
414 | ||
415 | for (j = 0; j < c->n_limits; j++) { | |
416 | u16 types = c->limits[j].types; | |
417 | ||
418 | /* | |
419 | * interface types shouldn't overlap, this is | |
420 | * used in cfg80211_can_change_interface() | |
421 | */ | |
422 | if (WARN_ON(types & all_iftypes)) | |
423 | return -EINVAL; | |
424 | all_iftypes |= types; | |
425 | ||
426 | if (WARN_ON(!c->limits[j].max)) | |
427 | return -EINVAL; | |
428 | ||
429 | /* Shouldn't list software iftypes in combinations! */ | |
430 | if (WARN_ON(wiphy->software_iftypes & types)) | |
431 | return -EINVAL; | |
432 | ||
98104fde JB |
433 | /* Only a single P2P_DEVICE can be allowed */ |
434 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
435 | c->limits[j].max > 1)) | |
436 | return -EINVAL; | |
437 | ||
7527a782 JB |
438 | cnt += c->limits[j].max; |
439 | /* | |
440 | * Don't advertise an unsupported type | |
441 | * in a combination. | |
442 | */ | |
443 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
444 | return -EINVAL; | |
445 | } | |
446 | ||
447 | /* You can't even choose that many! */ | |
448 | if (WARN_ON(cnt < c->max_interfaces)) | |
449 | return -EINVAL; | |
450 | } | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
704232c2 JB |
455 | int wiphy_register(struct wiphy *wiphy) |
456 | { | |
79c97e97 | 457 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 458 | int res; |
8318d78a JB |
459 | enum ieee80211_band band; |
460 | struct ieee80211_supported_band *sband; | |
461 | bool have_band = false; | |
462 | int i; | |
f59ac048 LR |
463 | u16 ifmodes = wiphy->interface_modes; |
464 | ||
dfb89c56 | 465 | #ifdef CONFIG_PM |
77dbbb13 JB |
466 | if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && |
467 | !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
468 | return -EINVAL; | |
dfb89c56 | 469 | #endif |
77dbbb13 | 470 | |
562a7480 JB |
471 | if (WARN_ON(wiphy->ap_sme_capa && |
472 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
473 | return -EINVAL; | |
474 | ||
ef15aac6 JB |
475 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
476 | return -EINVAL; | |
477 | ||
478 | if (WARN_ON(wiphy->addresses && | |
479 | !is_zero_ether_addr(wiphy->perm_addr) && | |
480 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
481 | ETH_ALEN))) | |
482 | return -EINVAL; | |
483 | ||
77765eaf VT |
484 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
485 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
486 | !rdev->ops->set_mac_acl))) | |
487 | return -EINVAL; | |
488 | ||
ef15aac6 JB |
489 | if (wiphy->addresses) |
490 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
491 | ||
f59ac048 LR |
492 | /* sanity check ifmodes */ |
493 | WARN_ON(!ifmodes); | |
2e161f78 | 494 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
495 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
496 | wiphy->interface_modes = ifmodes; | |
8318d78a | 497 | |
7527a782 JB |
498 | res = wiphy_verify_combinations(wiphy); |
499 | if (res) | |
500 | return res; | |
501 | ||
8318d78a JB |
502 | /* sanity check supported bands/channels */ |
503 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
504 | sband = wiphy->bands[band]; | |
505 | if (!sband) | |
506 | continue; | |
507 | ||
508 | sband->band = band; | |
3a0c52a6 VK |
509 | if (WARN_ON(!sband->n_channels)) |
510 | return -EINVAL; | |
511 | /* | |
512 | * on 60gHz band, there are no legacy rates, so | |
513 | * n_bitrates is 0 | |
514 | */ | |
515 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
516 | !sband->n_bitrates)) | |
881d948c JB |
517 | return -EINVAL; |
518 | ||
40db6c77 AK |
519 | /* |
520 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
521 | * modify the sband's ht data even if the driver uses a | |
522 | * global structure for that. | |
523 | */ | |
524 | if (cfg80211_disable_40mhz_24ghz && | |
525 | band == IEEE80211_BAND_2GHZ && | |
526 | sband->ht_cap.ht_supported) { | |
527 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
528 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
529 | } | |
530 | ||
881d948c JB |
531 | /* |
532 | * Since we use a u32 for rate bitmaps in | |
533 | * ieee80211_get_response_rate, we cannot | |
534 | * have more than 32 legacy rates. | |
535 | */ | |
536 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 537 | return -EINVAL; |
8318d78a JB |
538 | |
539 | for (i = 0; i < sband->n_channels; i++) { | |
540 | sband->channels[i].orig_flags = | |
541 | sband->channels[i].flags; | |
c4a9fafc | 542 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
543 | sband->channels[i].orig_mpwr = |
544 | sband->channels[i].max_power; | |
545 | sband->channels[i].band = band; | |
546 | } | |
547 | ||
548 | have_band = true; | |
549 | } | |
550 | ||
551 | if (!have_band) { | |
552 | WARN_ON(1); | |
553 | return -EINVAL; | |
554 | } | |
555 | ||
dfb89c56 | 556 | #ifdef CONFIG_PM |
ff1b6e69 JB |
557 | if (rdev->wiphy.wowlan.n_patterns) { |
558 | if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len || | |
559 | rdev->wiphy.wowlan.pattern_min_len > | |
560 | rdev->wiphy.wowlan.pattern_max_len)) | |
561 | return -EINVAL; | |
562 | } | |
dfb89c56 | 563 | #endif |
ff1b6e69 | 564 | |
8318d78a JB |
565 | /* check and set up bitrates */ |
566 | ieee80211_set_bitrate_flags(wiphy); | |
567 | ||
5a652052 MB |
568 | mutex_lock(&cfg80211_mutex); |
569 | ||
79c97e97 | 570 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d JL |
571 | if (res) { |
572 | mutex_unlock(&cfg80211_mutex); | |
573 | return res; | |
574 | } | |
1f87f7d3 | 575 | |
2f0accc1 | 576 | /* set up regulatory info */ |
57b5ce07 | 577 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 578 | |
5f2aa25e | 579 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 580 | cfg80211_rdev_list_generation++; |
704232c2 JB |
581 | |
582 | /* add to debugfs */ | |
79c97e97 JB |
583 | rdev->wiphy.debugfsdir = |
584 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 585 | ieee80211_debugfs_dir); |
79c97e97 JB |
586 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
587 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 588 | |
5be83de5 | 589 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
73d54c9e LR |
590 | struct regulatory_request request; |
591 | ||
592 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
593 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
594 | request.alpha2[0] = '9'; | |
595 | request.alpha2[1] = '9'; | |
596 | ||
597 | nl80211_send_reg_change_event(&request); | |
598 | } | |
599 | ||
79c97e97 | 600 | cfg80211_debugfs_rdev_add(rdev); |
5a652052 | 601 | mutex_unlock(&cfg80211_mutex); |
1ac61302 | 602 | |
c3d34d5d JL |
603 | /* |
604 | * due to a locking dependency this has to be outside of the | |
605 | * cfg80211_mutex lock | |
606 | */ | |
607 | res = rfkill_register(rdev->rfkill); | |
608 | if (res) | |
609 | goto out_rm_dev; | |
610 | ||
ecb44335 SG |
611 | rtnl_lock(); |
612 | rdev->wiphy.registered = true; | |
613 | rtnl_unlock(); | |
2f0accc1 | 614 | return 0; |
1f87f7d3 | 615 | |
5a652052 | 616 | out_rm_dev: |
79c97e97 | 617 | device_del(&rdev->wiphy.dev); |
704232c2 JB |
618 | return res; |
619 | } | |
620 | EXPORT_SYMBOL(wiphy_register); | |
621 | ||
1f87f7d3 JB |
622 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
623 | { | |
79c97e97 | 624 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 625 | |
79c97e97 | 626 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 627 | return; |
79c97e97 JB |
628 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
629 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
630 | } |
631 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
632 | ||
633 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
634 | { | |
79c97e97 | 635 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 636 | |
79c97e97 | 637 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
638 | } |
639 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
640 | ||
704232c2 JB |
641 | void wiphy_unregister(struct wiphy *wiphy) |
642 | { | |
79c97e97 | 643 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 644 | |
ecb44335 SG |
645 | rtnl_lock(); |
646 | rdev->wiphy.registered = false; | |
647 | rtnl_unlock(); | |
648 | ||
79c97e97 | 649 | rfkill_unregister(rdev->rfkill); |
1f87f7d3 | 650 | |
f16bfc1c | 651 | /* protect the device list */ |
a1794390 | 652 | mutex_lock(&cfg80211_mutex); |
704232c2 | 653 | |
ad002395 JB |
654 | wait_event(rdev->dev_wait, ({ |
655 | int __count; | |
656 | mutex_lock(&rdev->devlist_mtx); | |
657 | __count = rdev->opencount; | |
658 | mutex_unlock(&rdev->devlist_mtx); | |
c4f60846 | 659 | __count == 0; })); |
ad002395 JB |
660 | |
661 | mutex_lock(&rdev->devlist_mtx); | |
89a54e48 | 662 | BUG_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
663 | mutex_unlock(&rdev->devlist_mtx); |
664 | ||
665 | /* | |
666 | * First remove the hardware from everywhere, this makes | |
667 | * it impossible to find from userspace. | |
668 | */ | |
7bcfaf2f | 669 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
670 | list_del_rcu(&rdev->list); |
671 | synchronize_rcu(); | |
f16bfc1c JB |
672 | |
673 | /* | |
79c97e97 | 674 | * Try to grab rdev->mtx. If a command is still in progress, |
f16bfc1c JB |
675 | * hopefully the driver will refuse it since it's tearing |
676 | * down the device already. We wait for this command to complete | |
677 | * before unlinking the item from the list. | |
678 | * Note: as codified by the BUG_ON above we cannot get here if | |
ad002395 JB |
679 | * a virtual interface is still present. Hence, we can only get |
680 | * to lock contention here if userspace issues a command that | |
681 | * identified the hardware by wiphy index. | |
f16bfc1c | 682 | */ |
0ff6ce7b | 683 | cfg80211_lock_rdev(rdev); |
ad002395 | 684 | /* nothing */ |
0ff6ce7b | 685 | cfg80211_unlock_rdev(rdev); |
704232c2 | 686 | |
bfead080 LR |
687 | /* |
688 | * If this device got a regulatory hint tell core its | |
689 | * free to listen now to a new shiny device regulatory hint | |
690 | */ | |
691 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 692 | |
f5ea9120 | 693 | cfg80211_rdev_list_generation++; |
79c97e97 | 694 | device_del(&rdev->wiphy.dev); |
704232c2 | 695 | |
a1794390 | 696 | mutex_unlock(&cfg80211_mutex); |
6682588a | 697 | |
36e6fea8 | 698 | flush_work(&rdev->scan_done_wk); |
6682588a | 699 | cancel_work_sync(&rdev->conn_work); |
6682588a | 700 | flush_work(&rdev->event_work); |
04f39047 | 701 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
6d52563f JB |
702 | |
703 | if (rdev->wowlan && rdev->ops->set_wakeup) | |
e35e4d28 | 704 | rdev_set_wakeup(rdev, false); |
6d52563f | 705 | cfg80211_rdev_free_wowlan(rdev); |
704232c2 JB |
706 | } |
707 | EXPORT_SYMBOL(wiphy_unregister); | |
708 | ||
79c97e97 | 709 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 710 | { |
2a519311 | 711 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 712 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 JB |
713 | rfkill_destroy(rdev->rfkill); |
714 | mutex_destroy(&rdev->mtx); | |
715 | mutex_destroy(&rdev->devlist_mtx); | |
c10841ca | 716 | mutex_destroy(&rdev->sched_scan_mtx); |
37c73b5f BG |
717 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
718 | list_del(®->list); | |
719 | kfree(reg); | |
720 | } | |
79c97e97 | 721 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 722 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 723 | kfree(rdev); |
704232c2 JB |
724 | } |
725 | ||
726 | void wiphy_free(struct wiphy *wiphy) | |
727 | { | |
728 | put_device(&wiphy->dev); | |
729 | } | |
730 | EXPORT_SYMBOL(wiphy_free); | |
731 | ||
1f87f7d3 JB |
732 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
733 | { | |
79c97e97 | 734 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 735 | |
79c97e97 JB |
736 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
737 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
738 | } |
739 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
740 | ||
ad002395 JB |
741 | static void wdev_cleanup_work(struct work_struct *work) |
742 | { | |
743 | struct wireless_dev *wdev; | |
744 | struct cfg80211_registered_device *rdev; | |
745 | ||
746 | wdev = container_of(work, struct wireless_dev, cleanup_work); | |
747 | rdev = wiphy_to_dev(wdev->wiphy); | |
748 | ||
749 | cfg80211_lock_rdev(rdev); | |
750 | ||
fd014284 | 751 | if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) { |
ad002395 | 752 | rdev->scan_req->aborted = true; |
01a0ac41 | 753 | ___cfg80211_scan_done(rdev, true); |
ad002395 JB |
754 | } |
755 | ||
c10841ca LC |
756 | cfg80211_unlock_rdev(rdev); |
757 | ||
758 | mutex_lock(&rdev->sched_scan_mtx); | |
759 | ||
807f8a8c LC |
760 | if (WARN_ON(rdev->sched_scan_req && |
761 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
762 | __cfg80211_stop_sched_scan(rdev, false); | |
763 | } | |
764 | ||
c10841ca | 765 | mutex_unlock(&rdev->sched_scan_mtx); |
ad002395 JB |
766 | |
767 | mutex_lock(&rdev->devlist_mtx); | |
768 | rdev->opencount--; | |
769 | mutex_unlock(&rdev->devlist_mtx); | |
770 | wake_up(&rdev->dev_wait); | |
771 | ||
772 | dev_put(wdev->netdev); | |
773 | } | |
774 | ||
98104fde JB |
775 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
776 | { | |
777 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
778 | ||
779 | ASSERT_RTNL(); | |
780 | ||
781 | if (WARN_ON(wdev->netdev)) | |
782 | return; | |
783 | ||
784 | mutex_lock(&rdev->devlist_mtx); | |
785 | list_del_rcu(&wdev->list); | |
786 | rdev->devlist_generation++; | |
787 | ||
788 | switch (wdev->iftype) { | |
789 | case NL80211_IFTYPE_P2P_DEVICE: | |
790 | if (!wdev->p2p_started) | |
791 | break; | |
eeb126e9 | 792 | rdev_stop_p2p_device(rdev, wdev); |
98104fde JB |
793 | wdev->p2p_started = false; |
794 | rdev->opencount--; | |
795 | break; | |
796 | default: | |
797 | WARN_ON_ONCE(1); | |
798 | break; | |
799 | } | |
800 | mutex_unlock(&rdev->devlist_mtx); | |
801 | } | |
802 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
803 | ||
053a93dd MH |
804 | static struct device_type wiphy_type = { |
805 | .name = "wlan", | |
806 | }; | |
807 | ||
dbbae26a MK |
808 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
809 | enum nl80211_iftype iftype, int num) | |
810 | { | |
c5a7e582 | 811 | ASSERT_RTNL(); |
dbbae26a MK |
812 | |
813 | rdev->num_running_ifaces += num; | |
814 | if (iftype == NL80211_IFTYPE_MONITOR) | |
815 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
816 | } |
817 | ||
c4f60846 | 818 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
704232c2 JB |
819 | unsigned long state, |
820 | void *ndev) | |
821 | { | |
822 | struct net_device *dev = ndev; | |
2a783c13 | 823 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 824 | struct cfg80211_registered_device *rdev; |
7527a782 | 825 | int ret; |
704232c2 | 826 | |
2a783c13 | 827 | if (!wdev) |
1f87f7d3 | 828 | return NOTIFY_DONE; |
704232c2 | 829 | |
2a783c13 | 830 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 831 | |
2a783c13 | 832 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 833 | |
704232c2 | 834 | switch (state) { |
053a93dd MH |
835 | case NETDEV_POST_INIT: |
836 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
837 | break; | |
704232c2 | 838 | case NETDEV_REGISTER: |
0ff6ce7b JB |
839 | /* |
840 | * NB: cannot take rdev->mtx here because this may be | |
841 | * called within code protected by it when interfaces | |
842 | * are added with nl80211. | |
843 | */ | |
667503dd | 844 | mutex_init(&wdev->mtx); |
ad002395 | 845 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
667503dd JB |
846 | INIT_LIST_HEAD(&wdev->event_list); |
847 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
848 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
849 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 850 | |
704232c2 | 851 | mutex_lock(&rdev->devlist_mtx); |
89a54e48 JB |
852 | wdev->identifier = ++rdev->wdev_id; |
853 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 854 | rdev->devlist_generation++; |
463d0183 JB |
855 | /* can only change netns with wiphy */ |
856 | dev->features |= NETIF_F_NETNS_LOCAL; | |
857 | ||
704232c2 JB |
858 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
859 | "phy80211")) { | |
e9c0268f | 860 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 861 | } |
2a783c13 | 862 | wdev->netdev = dev; |
b23aa676 | 863 | wdev->sme_state = CFG80211_SME_IDLE; |
bc92afd9 | 864 | mutex_unlock(&rdev->devlist_mtx); |
3d23e349 | 865 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
866 | wdev->wext.default_key = -1; |
867 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 868 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
869 | #endif |
870 | ||
5be83de5 | 871 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 872 | wdev->ps = true; |
5be83de5 | 873 | else |
ffb9eb3d | 874 | wdev->ps = false; |
9043f3b8 JO |
875 | /* allow mac80211 to determine the timeout */ |
876 | wdev->ps_timeout = -1; | |
ffb9eb3d | 877 | |
d07d7507 | 878 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
ad4bb6f8 JB |
879 | |
880 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
074ac8df | 881 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
882 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
883 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 884 | break; |
04a773ad | 885 | case NETDEV_GOING_DOWN: |
b23aa676 SO |
886 | switch (wdev->iftype) { |
887 | case NL80211_IFTYPE_ADHOC: | |
888 | cfg80211_leave_ibss(rdev, dev, true); | |
889 | break; | |
074ac8df | 890 | case NL80211_IFTYPE_P2P_CLIENT: |
b23aa676 | 891 | case NL80211_IFTYPE_STATION: |
c10841ca | 892 | mutex_lock(&rdev->sched_scan_mtx); |
807f8a8c | 893 | __cfg80211_stop_sched_scan(rdev, false); |
c10841ca | 894 | mutex_unlock(&rdev->sched_scan_mtx); |
807f8a8c | 895 | |
667503dd | 896 | wdev_lock(wdev); |
3d23e349 | 897 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 JB |
898 | kfree(wdev->wext.ie); |
899 | wdev->wext.ie = NULL; | |
900 | wdev->wext.ie_len = 0; | |
0eb14647 | 901 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
f2129354 | 902 | #endif |
667503dd JB |
903 | __cfg80211_disconnect(rdev, dev, |
904 | WLAN_REASON_DEAUTH_LEAVING, true); | |
19957bb3 | 905 | cfg80211_mlme_down(rdev, dev); |
667503dd | 906 | wdev_unlock(wdev); |
b23aa676 | 907 | break; |
29cbe68c JB |
908 | case NL80211_IFTYPE_MESH_POINT: |
909 | cfg80211_leave_mesh(rdev, dev); | |
910 | break; | |
ac800140 MK |
911 | case NL80211_IFTYPE_AP: |
912 | cfg80211_stop_ap(rdev, dev); | |
913 | break; | |
b23aa676 SO |
914 | default: |
915 | break; | |
916 | } | |
56d1893d | 917 | wdev->beacon_interval = 0; |
01a0ac41 JB |
918 | break; |
919 | case NETDEV_DOWN: | |
dbbae26a | 920 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
c5a7e582 | 921 | dev_hold(dev); |
e60d7443 | 922 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
04a773ad JB |
923 | break; |
924 | case NETDEV_UP: | |
ad002395 JB |
925 | /* |
926 | * If we have a really quick DOWN/UP succession we may | |
927 | * have this work still pending ... cancel it and see | |
928 | * if it was pending, in which case we need to account | |
929 | * for some of the work it would have done. | |
930 | */ | |
931 | if (cancel_work_sync(&wdev->cleanup_work)) { | |
932 | mutex_lock(&rdev->devlist_mtx); | |
933 | rdev->opencount--; | |
934 | mutex_unlock(&rdev->devlist_mtx); | |
935 | dev_put(dev); | |
936 | } | |
4290cb4b | 937 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 938 | cfg80211_lock_rdev(rdev); |
aee83eaf | 939 | mutex_lock(&rdev->devlist_mtx); |
667503dd | 940 | wdev_lock(wdev); |
f2129354 | 941 | switch (wdev->iftype) { |
29cbe68c | 942 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 943 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 944 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 945 | break; |
f2129354 | 946 | case NL80211_IFTYPE_STATION: |
fffd0934 | 947 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 948 | break; |
29cbe68c | 949 | #endif |
c80d545d | 950 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 951 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
952 | { |
953 | /* backward compat code... */ | |
954 | struct mesh_setup setup; | |
955 | memcpy(&setup, &default_mesh_setup, | |
956 | sizeof(setup)); | |
957 | /* back compat only needed for mesh_id */ | |
958 | setup.mesh_id = wdev->ssid; | |
959 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
960 | if (wdev->mesh_id_up_len) | |
961 | __cfg80211_join_mesh(rdev, dev, | |
962 | &setup, | |
963 | &default_mesh_config); | |
964 | break; | |
965 | } | |
966 | #endif | |
f2129354 | 967 | default: |
04a773ad | 968 | break; |
f2129354 | 969 | } |
667503dd | 970 | wdev_unlock(wdev); |
ad002395 | 971 | rdev->opencount++; |
aee83eaf | 972 | mutex_unlock(&rdev->devlist_mtx); |
667503dd | 973 | cfg80211_unlock_rdev(rdev); |
bf6a0579 JO |
974 | |
975 | /* | |
976 | * Configure power management to the driver here so that its | |
977 | * correctly set also after interface type changes etc. | |
978 | */ | |
5966f2dd EP |
979 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
980 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 981 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
982 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
983 | wdev->ps_timeout)) { | |
bf6a0579 JO |
984 | /* assume this means it's off */ |
985 | wdev->ps = false; | |
986 | } | |
2a783c13 | 987 | break; |
704232c2 | 988 | case NETDEV_UNREGISTER: |
0ff6ce7b JB |
989 | /* |
990 | * NB: cannot take rdev->mtx here because this may be | |
991 | * called within code protected by it when interfaces | |
992 | * are removed with nl80211. | |
993 | */ | |
704232c2 | 994 | mutex_lock(&rdev->devlist_mtx); |
e40cbdac JB |
995 | /* |
996 | * It is possible to get NETDEV_UNREGISTER | |
997 | * multiple times. To detect that, check | |
998 | * that the interface is still on the list | |
999 | * of registered interfaces, and only then | |
1000 | * remove and clean it up. | |
1001 | */ | |
2a783c13 | 1002 | if (!list_empty(&wdev->list)) { |
704232c2 | 1003 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 1004 | list_del_rcu(&wdev->list); |
f5ea9120 | 1005 | rdev->devlist_generation++; |
2e161f78 | 1006 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 1007 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 1008 | kfree(wdev->wext.keys); |
fffd0934 | 1009 | #endif |
e40cbdac JB |
1010 | } |
1011 | mutex_unlock(&rdev->devlist_mtx); | |
5f2aa25e JB |
1012 | /* |
1013 | * synchronise (so that we won't find this netdev | |
1014 | * from other code any more) and then clear the list | |
1015 | * head so that the above code can safely check for | |
1016 | * !list_empty() to avoid double-cleanup. | |
1017 | */ | |
1018 | synchronize_rcu(); | |
1019 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1020 | /* |
1021 | * Ensure that all events have been processed and | |
1022 | * freed. | |
1023 | */ | |
1024 | cfg80211_process_wdev_events(wdev); | |
704232c2 | 1025 | break; |
1f87f7d3 | 1026 | case NETDEV_PRE_UP: |
0b20633d JB |
1027 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1028 | return notifier_from_errno(-EOPNOTSUPP); | |
1f87f7d3 JB |
1029 | if (rfkill_blocked(rdev->rfkill)) |
1030 | return notifier_from_errno(-ERFKILL); | |
e4e32459 | 1031 | mutex_lock(&rdev->devlist_mtx); |
7527a782 | 1032 | ret = cfg80211_can_add_interface(rdev, wdev->iftype); |
e4e32459 | 1033 | mutex_unlock(&rdev->devlist_mtx); |
7527a782 JB |
1034 | if (ret) |
1035 | return notifier_from_errno(ret); | |
1f87f7d3 | 1036 | break; |
704232c2 JB |
1037 | } |
1038 | ||
1f87f7d3 | 1039 | return NOTIFY_DONE; |
704232c2 JB |
1040 | } |
1041 | ||
1042 | static struct notifier_block cfg80211_netdev_notifier = { | |
1043 | .notifier_call = cfg80211_netdev_notifier_call, | |
1044 | }; | |
1045 | ||
463d0183 JB |
1046 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1047 | { | |
1048 | struct cfg80211_registered_device *rdev; | |
1049 | ||
1050 | rtnl_lock(); | |
1051 | mutex_lock(&cfg80211_mutex); | |
1052 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
1053 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1054 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1055 | } | |
1056 | mutex_unlock(&cfg80211_mutex); | |
1057 | rtnl_unlock(); | |
1058 | } | |
1059 | ||
1060 | static struct pernet_operations cfg80211_pernet_ops = { | |
1061 | .exit = cfg80211_pernet_exit, | |
1062 | }; | |
1063 | ||
1064 | static int __init cfg80211_init(void) | |
704232c2 | 1065 | { |
b2e1b302 LR |
1066 | int err; |
1067 | ||
463d0183 JB |
1068 | err = register_pernet_device(&cfg80211_pernet_ops); |
1069 | if (err) | |
1070 | goto out_fail_pernet; | |
1071 | ||
b2e1b302 | 1072 | err = wiphy_sysfs_init(); |
704232c2 JB |
1073 | if (err) |
1074 | goto out_fail_sysfs; | |
1075 | ||
1076 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1077 | if (err) | |
1078 | goto out_fail_notifier; | |
1079 | ||
55682965 JB |
1080 | err = nl80211_init(); |
1081 | if (err) | |
1082 | goto out_fail_nl80211; | |
1083 | ||
704232c2 JB |
1084 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1085 | ||
b2e1b302 LR |
1086 | err = regulatory_init(); |
1087 | if (err) | |
1088 | goto out_fail_reg; | |
1089 | ||
e60d7443 AB |
1090 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
1091 | if (!cfg80211_wq) | |
1092 | goto out_fail_wq; | |
1093 | ||
704232c2 JB |
1094 | return 0; |
1095 | ||
e60d7443 AB |
1096 | out_fail_wq: |
1097 | regulatory_exit(); | |
b2e1b302 LR |
1098 | out_fail_reg: |
1099 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
1100 | out_fail_nl80211: |
1101 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1102 | out_fail_notifier: |
1103 | wiphy_sysfs_exit(); | |
1104 | out_fail_sysfs: | |
463d0183 JB |
1105 | unregister_pernet_device(&cfg80211_pernet_ops); |
1106 | out_fail_pernet: | |
704232c2 JB |
1107 | return err; |
1108 | } | |
3a462465 | 1109 | subsys_initcall(cfg80211_init); |
704232c2 | 1110 | |
f884e387 | 1111 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1112 | { |
1113 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1114 | nl80211_exit(); |
704232c2 JB |
1115 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1116 | wiphy_sysfs_exit(); | |
b2e1b302 | 1117 | regulatory_exit(); |
463d0183 | 1118 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1119 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1120 | } |
1121 | module_exit(cfg80211_exit); |