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"); | |
fb4e1568 | 37 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 38 | |
5fe231e8 | 39 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 40 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 41 | int cfg80211_rdev_list_generation; |
a1794390 | 42 | |
704232c2 JB |
43 | /* for debugfs */ |
44 | static struct dentry *ieee80211_debugfs_dir; | |
45 | ||
e60d7443 AB |
46 | /* for the cleanup, scan and event works */ |
47 | struct workqueue_struct *cfg80211_wq; | |
48 | ||
40db6c77 AK |
49 | static bool cfg80211_disable_40mhz_24ghz; |
50 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
51 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
52 | "Disable 40MHz support in the 2.4GHz band"); | |
53 | ||
79c97e97 | 54 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 55 | { |
79c97e97 | 56 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 57 | |
5fe231e8 | 58 | ASSERT_RTNL(); |
761cf7ec | 59 | |
79c97e97 JB |
60 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
61 | if (rdev->wiphy_idx == wiphy_idx) { | |
62 | result = rdev; | |
55682965 JB |
63 | break; |
64 | } | |
65 | } | |
66 | ||
67 | return result; | |
68 | } | |
69 | ||
806a9e39 LR |
70 | int get_wiphy_idx(struct wiphy *wiphy) |
71 | { | |
f4173766 JB |
72 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
73 | ||
79c97e97 | 74 | return rdev->wiphy_idx; |
806a9e39 LR |
75 | } |
76 | ||
806a9e39 LR |
77 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
78 | { | |
79c97e97 | 79 | struct cfg80211_registered_device *rdev; |
806a9e39 | 80 | |
5fe231e8 | 81 | ASSERT_RTNL(); |
806a9e39 | 82 | |
79c97e97 JB |
83 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
84 | if (!rdev) | |
806a9e39 | 85 | return NULL; |
79c97e97 | 86 | return &rdev->wiphy; |
806a9e39 LR |
87 | } |
88 | ||
55682965 JB |
89 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
90 | char *newname) | |
91 | { | |
79c97e97 | 92 | struct cfg80211_registered_device *rdev2; |
7623225f | 93 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 94 | |
5fe231e8 | 95 | ASSERT_RTNL(); |
2940bb69 | 96 | |
7623225f JB |
97 | /* prohibit calling the thing phy%d when %d is not its number */ |
98 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
99 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
100 | /* count number of places needed to print wiphy_idx */ | |
101 | digits = 1; | |
102 | while (wiphy_idx /= 10) | |
103 | digits++; | |
104 | /* | |
105 | * deny the name if it is phy<idx> where <idx> is printed | |
106 | * without leading zeroes. taken == strlen(newname) here | |
107 | */ | |
108 | if (taken == strlen(PHY_NAME) + digits) | |
109 | return -EINVAL; | |
110 | } | |
111 | ||
112 | ||
2940bb69 | 113 | /* Ignore nop renames */ |
2940bb69 | 114 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 115 | return 0; |
2940bb69 EB |
116 | |
117 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
118 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
119 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
7623225f | 120 | return -EINVAL; |
55682965 | 121 | |
55682965 JB |
122 | result = device_rename(&rdev->wiphy.dev, newname); |
123 | if (result) | |
4bbf4d56 | 124 | return result; |
55682965 | 125 | |
33c0360b JB |
126 | if (rdev->wiphy.debugfsdir && |
127 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
128 | rdev->wiphy.debugfsdir, |
129 | rdev->wiphy.debugfsdir->d_parent, | |
130 | newname)) | |
e9c0268f | 131 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 132 | |
4bbf4d56 | 133 | nl80211_notify_dev_rename(rdev); |
55682965 | 134 | |
4bbf4d56 | 135 | return 0; |
55682965 JB |
136 | } |
137 | ||
463d0183 JB |
138 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
139 | struct net *net) | |
140 | { | |
141 | struct wireless_dev *wdev; | |
142 | int err = 0; | |
143 | ||
5be83de5 | 144 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
145 | return -EOPNOTSUPP; |
146 | ||
89a54e48 | 147 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
ba22fb5b JB |
148 | if (!wdev->netdev) |
149 | continue; | |
463d0183 JB |
150 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
151 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
152 | if (err) | |
153 | break; | |
154 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
155 | } | |
156 | ||
157 | if (err) { | |
158 | /* failed -- clean up to old netns */ | |
159 | net = wiphy_net(&rdev->wiphy); | |
160 | ||
89a54e48 | 161 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
463d0183 | 162 | list) { |
ba22fb5b JB |
163 | if (!wdev->netdev) |
164 | continue; | |
463d0183 JB |
165 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
166 | err = dev_change_net_namespace(wdev->netdev, net, | |
167 | "wlan%d"); | |
168 | WARN_ON(err); | |
169 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
170 | } | |
04600794 JB |
171 | |
172 | return err; | |
463d0183 JB |
173 | } |
174 | ||
175 | wiphy_net_set(&rdev->wiphy, net); | |
176 | ||
04600794 JB |
177 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
178 | WARN_ON(err); | |
179 | ||
180 | return 0; | |
463d0183 JB |
181 | } |
182 | ||
1f87f7d3 JB |
183 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
184 | { | |
79c97e97 | 185 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 186 | |
e35e4d28 | 187 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
188 | } |
189 | ||
f9f47529 JB |
190 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
191 | struct wireless_dev *wdev) | |
192 | { | |
5fe231e8 | 193 | ASSERT_RTNL(); |
f9f47529 JB |
194 | |
195 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
196 | return; | |
197 | ||
198 | if (!wdev->p2p_started) | |
199 | return; | |
200 | ||
201 | rdev_stop_p2p_device(rdev, wdev); | |
202 | wdev->p2p_started = false; | |
203 | ||
204 | rdev->opencount--; | |
205 | ||
a617302c JB |
206 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
207 | if (WARN_ON(!rdev->scan_req->notified)) | |
208 | rdev->scan_req->aborted = true; | |
f9d15d16 | 209 | ___cfg80211_scan_done(rdev, false); |
a617302c | 210 | } |
f9f47529 JB |
211 | } |
212 | ||
1f87f7d3 JB |
213 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
214 | { | |
79c97e97 | 215 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
216 | struct wireless_dev *wdev; |
217 | ||
218 | if (!blocked) | |
219 | return 0; | |
220 | ||
221 | rtnl_lock(); | |
f9f47529 | 222 | |
98104fde JB |
223 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
224 | if (wdev->netdev) { | |
ba22fb5b | 225 | dev_close(wdev->netdev); |
98104fde JB |
226 | continue; |
227 | } | |
228 | /* otherwise, check iftype */ | |
229 | switch (wdev->iftype) { | |
230 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 231 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
232 | break; |
233 | default: | |
234 | break; | |
235 | } | |
236 | } | |
1f87f7d3 | 237 | |
1f87f7d3 JB |
238 | rtnl_unlock(); |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
244 | { | |
79c97e97 | 245 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 246 | |
79c97e97 JB |
247 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
248 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
249 | } |
250 | ||
667503dd JB |
251 | static void cfg80211_event_work(struct work_struct *work) |
252 | { | |
253 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
254 | |
255 | rdev = container_of(work, struct cfg80211_registered_device, | |
256 | event_work); | |
257 | ||
258 | rtnl_lock(); | |
3d54d255 | 259 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
260 | rtnl_unlock(); |
261 | } | |
262 | ||
78f22b6a JB |
263 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
264 | { | |
265 | struct cfg80211_iface_destroy *item; | |
266 | ||
267 | ASSERT_RTNL(); | |
268 | ||
269 | spin_lock_irq(&rdev->destroy_list_lock); | |
270 | while ((item = list_first_entry_or_null(&rdev->destroy_list, | |
271 | struct cfg80211_iface_destroy, | |
272 | list))) { | |
273 | struct wireless_dev *wdev, *tmp; | |
274 | u32 nlportid = item->nlportid; | |
275 | ||
276 | list_del(&item->list); | |
277 | kfree(item); | |
278 | spin_unlock_irq(&rdev->destroy_list_lock); | |
279 | ||
280 | list_for_each_entry_safe(wdev, tmp, &rdev->wdev_list, list) { | |
281 | if (nlportid == wdev->owner_nlportid) | |
282 | rdev_del_virtual_intf(rdev, wdev); | |
283 | } | |
284 | ||
285 | spin_lock_irq(&rdev->destroy_list_lock); | |
286 | } | |
287 | spin_unlock_irq(&rdev->destroy_list_lock); | |
288 | } | |
289 | ||
290 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
291 | { | |
292 | struct cfg80211_registered_device *rdev; | |
293 | ||
294 | rdev = container_of(work, struct cfg80211_registered_device, | |
295 | destroy_work); | |
296 | ||
297 | rtnl_lock(); | |
298 | cfg80211_destroy_ifaces(rdev); | |
299 | rtnl_unlock(); | |
300 | } | |
301 | ||
704232c2 JB |
302 | /* exported functions */ |
303 | ||
3dcf670b | 304 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 305 | { |
73810b77 | 306 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
307 | |
308 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
309 | int alloc_size; |
310 | ||
0b20633d JB |
311 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
312 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
313 | WARN_ON(ops->connect && !ops->disconnect); | |
314 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
315 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
316 | WARN_ON(ops->add_station && !ops->del_station); | |
317 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 318 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 319 | |
79c97e97 | 320 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 321 | |
79c97e97 JB |
322 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
323 | if (!rdev) | |
704232c2 JB |
324 | return NULL; |
325 | ||
79c97e97 | 326 | rdev->ops = ops; |
704232c2 | 327 | |
73810b77 | 328 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 329 | |
f4173766 | 330 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 331 | /* ugh, wrapped! */ |
73810b77 | 332 | atomic_dec(&wiphy_counter); |
79c97e97 | 333 | kfree(rdev); |
704232c2 JB |
334 | return NULL; |
335 | } | |
704232c2 | 336 | |
9b881963 JB |
337 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
338 | rdev->wiphy_idx--; | |
339 | ||
7623225f JB |
340 | /* give it a proper name */ |
341 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
342 | ||
89a54e48 | 343 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
344 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
345 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
346 | spin_lock_init(&rdev->bss_lock); |
347 | INIT_LIST_HEAD(&rdev->bss_list); | |
348 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 349 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
350 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
351 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
352 | #ifdef CONFIG_CFG80211_WEXT |
353 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
354 | #endif | |
355 | ||
79c97e97 JB |
356 | device_initialize(&rdev->wiphy.dev); |
357 | rdev->wiphy.dev.class = &ieee80211_class; | |
358 | rdev->wiphy.dev.platform_data = rdev; | |
359 | ||
78f22b6a JB |
360 | INIT_LIST_HEAD(&rdev->destroy_list); |
361 | spin_lock_init(&rdev->destroy_list_lock); | |
362 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); | |
363 | ||
5be83de5 JB |
364 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
365 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
366 | #endif | |
16cb9d42 | 367 | |
463d0183 JB |
368 | wiphy_net_set(&rdev->wiphy, &init_net); |
369 | ||
79c97e97 JB |
370 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
371 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
372 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
373 | &rdev->rfkill_ops, rdev); | |
374 | ||
375 | if (!rdev->rfkill) { | |
376 | kfree(rdev); | |
1f87f7d3 JB |
377 | return NULL; |
378 | } | |
379 | ||
79c97e97 JB |
380 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
381 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
382 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 383 | |
ad002395 JB |
384 | init_waitqueue_head(&rdev->dev_wait); |
385 | ||
b9a5f8ca JM |
386 | /* |
387 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
388 | * Fragmentation and RTS threshold are disabled by default with the | |
389 | * special -1 value. | |
390 | */ | |
79c97e97 JB |
391 | rdev->wiphy.retry_short = 7; |
392 | rdev->wiphy.retry_long = 4; | |
393 | rdev->wiphy.frag_threshold = (u32) -1; | |
394 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 395 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 396 | |
79c97e97 | 397 | return &rdev->wiphy; |
704232c2 JB |
398 | } |
399 | EXPORT_SYMBOL(wiphy_new); | |
400 | ||
7527a782 JB |
401 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
402 | { | |
403 | const struct ieee80211_iface_combination *c; | |
404 | int i, j; | |
405 | ||
7527a782 JB |
406 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
407 | u32 cnt = 0; | |
408 | u16 all_iftypes = 0; | |
409 | ||
410 | c = &wiphy->iface_combinations[i]; | |
411 | ||
11c4a075 SW |
412 | /* |
413 | * Combinations with just one interface aren't real, | |
414 | * however we make an exception for DFS. | |
415 | */ | |
416 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
417 | return -EINVAL; |
418 | ||
419 | /* Need at least one channel */ | |
420 | if (WARN_ON(!c->num_different_channels)) | |
421 | return -EINVAL; | |
422 | ||
d4e50c59 MK |
423 | /* |
424 | * Put a sane limit on maximum number of different | |
425 | * channels to simplify channel accounting code. | |
426 | */ | |
427 | if (WARN_ON(c->num_different_channels > | |
428 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
429 | return -EINVAL; | |
430 | ||
11c4a075 SW |
431 | /* DFS only works on one channel. */ |
432 | if (WARN_ON(c->radar_detect_widths && | |
433 | (c->num_different_channels > 1))) | |
434 | return -EINVAL; | |
435 | ||
7527a782 JB |
436 | if (WARN_ON(!c->n_limits)) |
437 | return -EINVAL; | |
438 | ||
439 | for (j = 0; j < c->n_limits; j++) { | |
440 | u16 types = c->limits[j].types; | |
441 | ||
442 | /* | |
443 | * interface types shouldn't overlap, this is | |
444 | * used in cfg80211_can_change_interface() | |
445 | */ | |
446 | if (WARN_ON(types & all_iftypes)) | |
447 | return -EINVAL; | |
448 | all_iftypes |= types; | |
449 | ||
450 | if (WARN_ON(!c->limits[j].max)) | |
451 | return -EINVAL; | |
452 | ||
453 | /* Shouldn't list software iftypes in combinations! */ | |
454 | if (WARN_ON(wiphy->software_iftypes & types)) | |
455 | return -EINVAL; | |
456 | ||
98104fde JB |
457 | /* Only a single P2P_DEVICE can be allowed */ |
458 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
459 | c->limits[j].max > 1)) | |
460 | return -EINVAL; | |
461 | ||
7527a782 JB |
462 | cnt += c->limits[j].max; |
463 | /* | |
464 | * Don't advertise an unsupported type | |
465 | * in a combination. | |
466 | */ | |
467 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | /* You can't even choose that many! */ | |
472 | if (WARN_ON(cnt < c->max_interfaces)) | |
473 | return -EINVAL; | |
474 | } | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
704232c2 JB |
479 | int wiphy_register(struct wiphy *wiphy) |
480 | { | |
79c97e97 | 481 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 482 | int res; |
8318d78a JB |
483 | enum ieee80211_band band; |
484 | struct ieee80211_supported_band *sband; | |
485 | bool have_band = false; | |
486 | int i; | |
f59ac048 LR |
487 | u16 ifmodes = wiphy->interface_modes; |
488 | ||
dda444d5 SW |
489 | /* |
490 | * There are major locking problems in nl80211/mac80211 for CSA, | |
491 | * disable for all drivers until this has been reworked. | |
492 | */ | |
493 | wiphy->flags &= ~WIPHY_FLAG_HAS_CHANNEL_SWITCH; | |
494 | ||
dfb89c56 | 495 | #ifdef CONFIG_PM |
964dc9e2 JB |
496 | if (WARN_ON(wiphy->wowlan && |
497 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
498 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
499 | return -EINVAL; | |
500 | if (WARN_ON(wiphy->wowlan && | |
501 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
502 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 503 | return -EINVAL; |
dfb89c56 | 504 | #endif |
77dbbb13 | 505 | |
be29b99a AK |
506 | if (WARN_ON(wiphy->coalesce && |
507 | (!wiphy->coalesce->n_rules || | |
508 | !wiphy->coalesce->n_patterns) && | |
509 | (!wiphy->coalesce->pattern_min_len || | |
510 | wiphy->coalesce->pattern_min_len > | |
511 | wiphy->coalesce->pattern_max_len))) | |
512 | return -EINVAL; | |
513 | ||
562a7480 JB |
514 | if (WARN_ON(wiphy->ap_sme_capa && |
515 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
516 | return -EINVAL; | |
517 | ||
ef15aac6 JB |
518 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
519 | return -EINVAL; | |
520 | ||
521 | if (WARN_ON(wiphy->addresses && | |
522 | !is_zero_ether_addr(wiphy->perm_addr) && | |
523 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
524 | ETH_ALEN))) | |
525 | return -EINVAL; | |
526 | ||
77765eaf VT |
527 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
528 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
529 | !rdev->ops->set_mac_acl))) | |
530 | return -EINVAL; | |
531 | ||
ef15aac6 JB |
532 | if (wiphy->addresses) |
533 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
534 | ||
f59ac048 LR |
535 | /* sanity check ifmodes */ |
536 | WARN_ON(!ifmodes); | |
2e161f78 | 537 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
538 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
539 | wiphy->interface_modes = ifmodes; | |
8318d78a | 540 | |
7527a782 JB |
541 | res = wiphy_verify_combinations(wiphy); |
542 | if (res) | |
543 | return res; | |
544 | ||
8318d78a JB |
545 | /* sanity check supported bands/channels */ |
546 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
547 | sband = wiphy->bands[band]; | |
548 | if (!sband) | |
549 | continue; | |
550 | ||
551 | sband->band = band; | |
3a0c52a6 VK |
552 | if (WARN_ON(!sband->n_channels)) |
553 | return -EINVAL; | |
554 | /* | |
555 | * on 60gHz band, there are no legacy rates, so | |
556 | * n_bitrates is 0 | |
557 | */ | |
558 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
559 | !sband->n_bitrates)) | |
881d948c JB |
560 | return -EINVAL; |
561 | ||
40db6c77 AK |
562 | /* |
563 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
564 | * modify the sband's ht data even if the driver uses a | |
565 | * global structure for that. | |
566 | */ | |
567 | if (cfg80211_disable_40mhz_24ghz && | |
568 | band == IEEE80211_BAND_2GHZ && | |
569 | sband->ht_cap.ht_supported) { | |
570 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
571 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
572 | } | |
573 | ||
881d948c JB |
574 | /* |
575 | * Since we use a u32 for rate bitmaps in | |
576 | * ieee80211_get_response_rate, we cannot | |
577 | * have more than 32 legacy rates. | |
578 | */ | |
579 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 580 | return -EINVAL; |
8318d78a JB |
581 | |
582 | for (i = 0; i < sband->n_channels; i++) { | |
583 | sband->channels[i].orig_flags = | |
584 | sband->channels[i].flags; | |
c4a9fafc | 585 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
586 | sband->channels[i].orig_mpwr = |
587 | sband->channels[i].max_power; | |
588 | sband->channels[i].band = band; | |
589 | } | |
590 | ||
591 | have_band = true; | |
592 | } | |
593 | ||
594 | if (!have_band) { | |
595 | WARN_ON(1); | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
dfb89c56 | 599 | #ifdef CONFIG_PM |
964dc9e2 JB |
600 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
601 | (!rdev->wiphy.wowlan->pattern_min_len || | |
602 | rdev->wiphy.wowlan->pattern_min_len > | |
603 | rdev->wiphy.wowlan->pattern_max_len))) | |
604 | return -EINVAL; | |
dfb89c56 | 605 | #endif |
ff1b6e69 | 606 | |
8318d78a JB |
607 | /* check and set up bitrates */ |
608 | ieee80211_set_bitrate_flags(wiphy); | |
609 | ||
00c3a6ed JB |
610 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
611 | ||
aa5f66d5 | 612 | rtnl_lock(); |
79c97e97 | 613 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 614 | if (res) { |
aa5f66d5 | 615 | rtnl_unlock(); |
c3d34d5d JL |
616 | return res; |
617 | } | |
1f87f7d3 | 618 | |
2f0accc1 | 619 | /* set up regulatory info */ |
57b5ce07 | 620 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 621 | |
5f2aa25e | 622 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 623 | cfg80211_rdev_list_generation++; |
704232c2 JB |
624 | |
625 | /* add to debugfs */ | |
79c97e97 JB |
626 | rdev->wiphy.debugfsdir = |
627 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 628 | ieee80211_debugfs_dir); |
79c97e97 JB |
629 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
630 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 631 | |
a2f73b6c | 632 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
633 | struct regulatory_request request; |
634 | ||
635 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
636 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
637 | request.alpha2[0] = '9'; | |
638 | request.alpha2[1] = '9'; | |
639 | ||
640 | nl80211_send_reg_change_event(&request); | |
641 | } | |
642 | ||
79c97e97 | 643 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 644 | |
ecb44335 SG |
645 | rdev->wiphy.registered = true; |
646 | rtnl_unlock(); | |
aa5f66d5 JB |
647 | |
648 | res = rfkill_register(rdev->rfkill); | |
649 | if (res) { | |
650 | rfkill_destroy(rdev->rfkill); | |
651 | rdev->rfkill = NULL; | |
652 | wiphy_unregister(&rdev->wiphy); | |
653 | return res; | |
654 | } | |
655 | ||
2f0accc1 | 656 | return 0; |
704232c2 JB |
657 | } |
658 | EXPORT_SYMBOL(wiphy_register); | |
659 | ||
1f87f7d3 JB |
660 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
661 | { | |
79c97e97 | 662 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 663 | |
79c97e97 | 664 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 665 | return; |
79c97e97 JB |
666 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
667 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
668 | } |
669 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
670 | ||
671 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
672 | { | |
79c97e97 | 673 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 674 | |
79c97e97 | 675 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
676 | } |
677 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
678 | ||
704232c2 JB |
679 | void wiphy_unregister(struct wiphy *wiphy) |
680 | { | |
79c97e97 | 681 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 682 | |
ad002395 JB |
683 | wait_event(rdev->dev_wait, ({ |
684 | int __count; | |
5fe231e8 | 685 | rtnl_lock(); |
ad002395 | 686 | __count = rdev->opencount; |
5fe231e8 | 687 | rtnl_unlock(); |
c4f60846 | 688 | __count == 0; })); |
ad002395 | 689 | |
aa5f66d5 JB |
690 | if (rdev->rfkill) |
691 | rfkill_unregister(rdev->rfkill); | |
256c90de | 692 | |
5fe231e8 JB |
693 | rtnl_lock(); |
694 | rdev->wiphy.registered = false; | |
695 | ||
89a54e48 | 696 | BUG_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
697 | |
698 | /* | |
699 | * First remove the hardware from everywhere, this makes | |
700 | * it impossible to find from userspace. | |
701 | */ | |
7bcfaf2f | 702 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
703 | list_del_rcu(&rdev->list); |
704 | synchronize_rcu(); | |
f16bfc1c | 705 | |
bfead080 LR |
706 | /* |
707 | * If this device got a regulatory hint tell core its | |
708 | * free to listen now to a new shiny device regulatory hint | |
709 | */ | |
710 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 711 | |
f5ea9120 | 712 | cfg80211_rdev_list_generation++; |
79c97e97 | 713 | device_del(&rdev->wiphy.dev); |
704232c2 | 714 | |
5fe231e8 | 715 | rtnl_unlock(); |
6682588a | 716 | |
36e6fea8 | 717 | flush_work(&rdev->scan_done_wk); |
6682588a | 718 | cancel_work_sync(&rdev->conn_work); |
6682588a | 719 | flush_work(&rdev->event_work); |
04f39047 | 720 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 721 | flush_work(&rdev->destroy_work); |
6d52563f | 722 | |
6abb9cb9 JB |
723 | #ifdef CONFIG_PM |
724 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 725 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 726 | #endif |
6d52563f | 727 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 728 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
729 | } |
730 | EXPORT_SYMBOL(wiphy_unregister); | |
731 | ||
79c97e97 | 732 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 733 | { |
2a519311 | 734 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 735 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 736 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
737 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
738 | list_del(®->list); | |
739 | kfree(reg); | |
740 | } | |
79c97e97 | 741 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 742 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 743 | kfree(rdev); |
704232c2 JB |
744 | } |
745 | ||
746 | void wiphy_free(struct wiphy *wiphy) | |
747 | { | |
748 | put_device(&wiphy->dev); | |
749 | } | |
750 | EXPORT_SYMBOL(wiphy_free); | |
751 | ||
1f87f7d3 JB |
752 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
753 | { | |
79c97e97 | 754 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 755 | |
79c97e97 JB |
756 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
757 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
758 | } |
759 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
760 | ||
98104fde JB |
761 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
762 | { | |
763 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
764 | ||
765 | ASSERT_RTNL(); | |
766 | ||
767 | if (WARN_ON(wdev->netdev)) | |
768 | return; | |
769 | ||
98104fde JB |
770 | list_del_rcu(&wdev->list); |
771 | rdev->devlist_generation++; | |
772 | ||
773 | switch (wdev->iftype) { | |
774 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 775 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
776 | break; |
777 | default: | |
778 | WARN_ON_ONCE(1); | |
779 | break; | |
780 | } | |
98104fde JB |
781 | } |
782 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
783 | ||
f1e3d556 | 784 | static const struct device_type wiphy_type = { |
053a93dd MH |
785 | .name = "wlan", |
786 | }; | |
787 | ||
dbbae26a MK |
788 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
789 | enum nl80211_iftype iftype, int num) | |
790 | { | |
c5a7e582 | 791 | ASSERT_RTNL(); |
dbbae26a MK |
792 | |
793 | rdev->num_running_ifaces += num; | |
794 | if (iftype == NL80211_IFTYPE_MONITOR) | |
795 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
796 | } |
797 | ||
81256969 | 798 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
5fe231e8 | 799 | struct wireless_dev *wdev) |
81256969 SG |
800 | { |
801 | struct net_device *dev = wdev->netdev; | |
802 | ||
24d584d7 BB |
803 | ASSERT_RTNL(); |
804 | ||
81256969 SG |
805 | switch (wdev->iftype) { |
806 | case NL80211_IFTYPE_ADHOC: | |
807 | cfg80211_leave_ibss(rdev, dev, true); | |
808 | break; | |
809 | case NL80211_IFTYPE_P2P_CLIENT: | |
810 | case NL80211_IFTYPE_STATION: | |
24d584d7 BB |
811 | if (rdev->sched_scan_req && dev == rdev->sched_scan_req->dev) |
812 | __cfg80211_stop_sched_scan(rdev, false); | |
81256969 SG |
813 | |
814 | wdev_lock(wdev); | |
815 | #ifdef CONFIG_CFG80211_WEXT | |
816 | kfree(wdev->wext.ie); | |
817 | wdev->wext.ie = NULL; | |
818 | wdev->wext.ie_len = 0; | |
819 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
820 | #endif | |
83739b03 JB |
821 | cfg80211_disconnect(rdev, dev, |
822 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
823 | wdev_unlock(wdev); |
824 | break; | |
825 | case NL80211_IFTYPE_MESH_POINT: | |
826 | cfg80211_leave_mesh(rdev, dev); | |
827 | break; | |
828 | case NL80211_IFTYPE_AP: | |
74418ede | 829 | case NL80211_IFTYPE_P2P_GO: |
7c8d5e03 | 830 | cfg80211_stop_ap(rdev, dev, true); |
81256969 SG |
831 | break; |
832 | default: | |
833 | break; | |
834 | } | |
81256969 SG |
835 | } |
836 | ||
c4f60846 | 837 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 838 | unsigned long state, void *ptr) |
704232c2 | 839 | { |
351638e7 | 840 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 841 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 842 | struct cfg80211_registered_device *rdev; |
7527a782 | 843 | int ret; |
704232c2 | 844 | |
2a783c13 | 845 | if (!wdev) |
1f87f7d3 | 846 | return NOTIFY_DONE; |
704232c2 | 847 | |
2a783c13 | 848 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 849 | |
2a783c13 | 850 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 851 | |
704232c2 | 852 | switch (state) { |
053a93dd MH |
853 | case NETDEV_POST_INIT: |
854 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
855 | break; | |
704232c2 | 856 | case NETDEV_REGISTER: |
0ff6ce7b JB |
857 | /* |
858 | * NB: cannot take rdev->mtx here because this may be | |
859 | * called within code protected by it when interfaces | |
860 | * are added with nl80211. | |
861 | */ | |
667503dd JB |
862 | mutex_init(&wdev->mtx); |
863 | INIT_LIST_HEAD(&wdev->event_list); | |
864 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
865 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
866 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 867 | |
89a54e48 JB |
868 | wdev->identifier = ++rdev->wdev_id; |
869 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 870 | rdev->devlist_generation++; |
463d0183 JB |
871 | /* can only change netns with wiphy */ |
872 | dev->features |= NETIF_F_NETNS_LOCAL; | |
873 | ||
704232c2 JB |
874 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
875 | "phy80211")) { | |
e9c0268f | 876 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 877 | } |
2a783c13 | 878 | wdev->netdev = dev; |
3d23e349 | 879 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
880 | wdev->wext.default_key = -1; |
881 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 882 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
883 | #endif |
884 | ||
5be83de5 | 885 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 886 | wdev->ps = true; |
5be83de5 | 887 | else |
ffb9eb3d | 888 | wdev->ps = false; |
9043f3b8 JO |
889 | /* allow mac80211 to determine the timeout */ |
890 | wdev->ps_timeout = -1; | |
ffb9eb3d | 891 | |
d07d7507 | 892 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
ad4bb6f8 JB |
893 | |
894 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
074ac8df | 895 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
896 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
897 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 898 | break; |
04a773ad | 899 | case NETDEV_GOING_DOWN: |
81256969 | 900 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
901 | break; |
902 | case NETDEV_DOWN: | |
dbbae26a | 903 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
904 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
905 | if (WARN_ON(!rdev->scan_req->notified)) | |
906 | rdev->scan_req->aborted = true; | |
f9d15d16 | 907 | ___cfg80211_scan_done(rdev, false); |
a617302c | 908 | } |
5fe231e8 JB |
909 | |
910 | if (WARN_ON(rdev->sched_scan_req && | |
911 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
912 | __cfg80211_stop_sched_scan(rdev, false); | |
913 | } | |
914 | ||
915 | rdev->opencount--; | |
916 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
917 | break; |
918 | case NETDEV_UP: | |
4290cb4b | 919 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 920 | wdev_lock(wdev); |
f2129354 | 921 | switch (wdev->iftype) { |
29cbe68c | 922 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 923 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 924 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 925 | break; |
f2129354 | 926 | case NL80211_IFTYPE_STATION: |
fffd0934 | 927 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 928 | break; |
29cbe68c | 929 | #endif |
c80d545d | 930 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 931 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
932 | { |
933 | /* backward compat code... */ | |
934 | struct mesh_setup setup; | |
935 | memcpy(&setup, &default_mesh_setup, | |
936 | sizeof(setup)); | |
937 | /* back compat only needed for mesh_id */ | |
938 | setup.mesh_id = wdev->ssid; | |
939 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
940 | if (wdev->mesh_id_up_len) | |
941 | __cfg80211_join_mesh(rdev, dev, | |
942 | &setup, | |
943 | &default_mesh_config); | |
944 | break; | |
945 | } | |
946 | #endif | |
f2129354 | 947 | default: |
04a773ad | 948 | break; |
f2129354 | 949 | } |
667503dd | 950 | wdev_unlock(wdev); |
ad002395 | 951 | rdev->opencount++; |
bf6a0579 JO |
952 | |
953 | /* | |
954 | * Configure power management to the driver here so that its | |
955 | * correctly set also after interface type changes etc. | |
956 | */ | |
5966f2dd EP |
957 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
958 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 959 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
960 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
961 | wdev->ps_timeout)) { | |
bf6a0579 JO |
962 | /* assume this means it's off */ |
963 | wdev->ps = false; | |
964 | } | |
2a783c13 | 965 | break; |
704232c2 | 966 | case NETDEV_UNREGISTER: |
e40cbdac JB |
967 | /* |
968 | * It is possible to get NETDEV_UNREGISTER | |
969 | * multiple times. To detect that, check | |
970 | * that the interface is still on the list | |
971 | * of registered interfaces, and only then | |
972 | * remove and clean it up. | |
973 | */ | |
2a783c13 | 974 | if (!list_empty(&wdev->list)) { |
704232c2 | 975 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 976 | list_del_rcu(&wdev->list); |
f5ea9120 | 977 | rdev->devlist_generation++; |
2e161f78 | 978 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 979 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 980 | kfree(wdev->wext.keys); |
fffd0934 | 981 | #endif |
e40cbdac | 982 | } |
5f2aa25e JB |
983 | /* |
984 | * synchronise (so that we won't find this netdev | |
985 | * from other code any more) and then clear the list | |
986 | * head so that the above code can safely check for | |
987 | * !list_empty() to avoid double-cleanup. | |
988 | */ | |
989 | synchronize_rcu(); | |
990 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
991 | /* |
992 | * Ensure that all events have been processed and | |
993 | * freed. | |
994 | */ | |
995 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
996 | |
997 | if (WARN_ON(wdev->current_bss)) { | |
998 | cfg80211_unhold_bss(wdev->current_bss); | |
999 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1000 | wdev->current_bss = NULL; | |
1001 | } | |
704232c2 | 1002 | break; |
1f87f7d3 | 1003 | case NETDEV_PRE_UP: |
0b20633d JB |
1004 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1005 | return notifier_from_errno(-EOPNOTSUPP); | |
7527a782 JB |
1006 | ret = cfg80211_can_add_interface(rdev, wdev->iftype); |
1007 | if (ret) | |
1008 | return notifier_from_errno(ret); | |
1f87f7d3 | 1009 | break; |
704232c2 JB |
1010 | } |
1011 | ||
1f87f7d3 | 1012 | return NOTIFY_DONE; |
704232c2 JB |
1013 | } |
1014 | ||
1015 | static struct notifier_block cfg80211_netdev_notifier = { | |
1016 | .notifier_call = cfg80211_netdev_notifier_call, | |
1017 | }; | |
1018 | ||
463d0183 JB |
1019 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1020 | { | |
1021 | struct cfg80211_registered_device *rdev; | |
1022 | ||
1023 | rtnl_lock(); | |
463d0183 JB |
1024 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1025 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1026 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1027 | } | |
463d0183 JB |
1028 | rtnl_unlock(); |
1029 | } | |
1030 | ||
1031 | static struct pernet_operations cfg80211_pernet_ops = { | |
1032 | .exit = cfg80211_pernet_exit, | |
1033 | }; | |
1034 | ||
1035 | static int __init cfg80211_init(void) | |
704232c2 | 1036 | { |
b2e1b302 LR |
1037 | int err; |
1038 | ||
463d0183 JB |
1039 | err = register_pernet_device(&cfg80211_pernet_ops); |
1040 | if (err) | |
1041 | goto out_fail_pernet; | |
1042 | ||
b2e1b302 | 1043 | err = wiphy_sysfs_init(); |
704232c2 JB |
1044 | if (err) |
1045 | goto out_fail_sysfs; | |
1046 | ||
1047 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1048 | if (err) | |
1049 | goto out_fail_notifier; | |
1050 | ||
55682965 JB |
1051 | err = nl80211_init(); |
1052 | if (err) | |
1053 | goto out_fail_nl80211; | |
1054 | ||
704232c2 JB |
1055 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1056 | ||
b2e1b302 LR |
1057 | err = regulatory_init(); |
1058 | if (err) | |
1059 | goto out_fail_reg; | |
1060 | ||
e60d7443 | 1061 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1062 | if (!cfg80211_wq) { |
1063 | err = -ENOMEM; | |
e60d7443 | 1064 | goto out_fail_wq; |
f00f188f | 1065 | } |
e60d7443 | 1066 | |
704232c2 JB |
1067 | return 0; |
1068 | ||
e60d7443 AB |
1069 | out_fail_wq: |
1070 | regulatory_exit(); | |
b2e1b302 LR |
1071 | out_fail_reg: |
1072 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
1073 | out_fail_nl80211: |
1074 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1075 | out_fail_notifier: |
1076 | wiphy_sysfs_exit(); | |
1077 | out_fail_sysfs: | |
463d0183 JB |
1078 | unregister_pernet_device(&cfg80211_pernet_ops); |
1079 | out_fail_pernet: | |
704232c2 JB |
1080 | return err; |
1081 | } | |
3a462465 | 1082 | subsys_initcall(cfg80211_init); |
704232c2 | 1083 | |
f884e387 | 1084 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1085 | { |
1086 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1087 | nl80211_exit(); |
704232c2 JB |
1088 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1089 | wiphy_sysfs_exit(); | |
b2e1b302 | 1090 | regulatory_exit(); |
463d0183 | 1091 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1092 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1093 | } |
1094 | module_exit(cfg80211_exit); |