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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> |
2740f0cf | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
704232c2 JB |
6 | */ |
7 | ||
e9c0268f JP |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | ||
704232c2 JB |
10 | #include <linux/if.h> |
11 | #include <linux/module.h> | |
12 | #include <linux/err.h> | |
704232c2 | 13 | #include <linux/list.h> |
5a0e3ad6 | 14 | #include <linux/slab.h> |
704232c2 JB |
15 | #include <linux/nl80211.h> |
16 | #include <linux/debugfs.h> | |
17 | #include <linux/notifier.h> | |
18 | #include <linux/device.h> | |
16a832e7 | 19 | #include <linux/etherdevice.h> |
1f87f7d3 | 20 | #include <linux/rtnetlink.h> |
d43c36dc | 21 | #include <linux/sched.h> |
704232c2 JB |
22 | #include <net/genetlink.h> |
23 | #include <net/cfg80211.h> | |
55682965 | 24 | #include "nl80211.h" |
704232c2 JB |
25 | #include "core.h" |
26 | #include "sysfs.h" | |
1ac61302 | 27 | #include "debugfs.h" |
a9a11622 | 28 | #include "wext-compat.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 | { | |
f26cbf40 | 72 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 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 | |
3bb20556 | 133 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
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 | ||
f6837ba8 | 213 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 214 | { |
f6837ba8 | 215 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
216 | struct wireless_dev *wdev; |
217 | ||
f6837ba8 | 218 | ASSERT_RTNL(); |
f9f47529 | 219 | |
98104fde JB |
220 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
221 | if (wdev->netdev) { | |
ba22fb5b | 222 | dev_close(wdev->netdev); |
98104fde JB |
223 | continue; |
224 | } | |
225 | /* otherwise, check iftype */ | |
226 | switch (wdev->iftype) { | |
227 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 228 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
229 | break; |
230 | default: | |
231 | break; | |
232 | } | |
233 | } | |
f6837ba8 JB |
234 | } |
235 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 236 | |
f6837ba8 JB |
237 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
238 | { | |
239 | struct cfg80211_registered_device *rdev = data; | |
240 | ||
241 | if (!blocked) | |
242 | return 0; | |
243 | ||
244 | rtnl_lock(); | |
245 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
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(); | |
3d54d255 | 267 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
268 | rtnl_unlock(); |
269 | } | |
270 | ||
78f22b6a JB |
271 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
272 | { | |
273 | struct cfg80211_iface_destroy *item; | |
274 | ||
275 | ASSERT_RTNL(); | |
276 | ||
277 | spin_lock_irq(&rdev->destroy_list_lock); | |
278 | while ((item = list_first_entry_or_null(&rdev->destroy_list, | |
279 | struct cfg80211_iface_destroy, | |
280 | list))) { | |
281 | struct wireless_dev *wdev, *tmp; | |
282 | u32 nlportid = item->nlportid; | |
283 | ||
284 | list_del(&item->list); | |
285 | kfree(item); | |
286 | spin_unlock_irq(&rdev->destroy_list_lock); | |
287 | ||
288 | list_for_each_entry_safe(wdev, tmp, &rdev->wdev_list, list) { | |
289 | if (nlportid == wdev->owner_nlportid) | |
290 | rdev_del_virtual_intf(rdev, wdev); | |
291 | } | |
292 | ||
293 | spin_lock_irq(&rdev->destroy_list_lock); | |
294 | } | |
295 | spin_unlock_irq(&rdev->destroy_list_lock); | |
296 | } | |
297 | ||
298 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
299 | { | |
300 | struct cfg80211_registered_device *rdev; | |
301 | ||
302 | rdev = container_of(work, struct cfg80211_registered_device, | |
303 | destroy_work); | |
304 | ||
305 | rtnl_lock(); | |
306 | cfg80211_destroy_ifaces(rdev); | |
307 | rtnl_unlock(); | |
308 | } | |
309 | ||
704232c2 JB |
310 | /* exported functions */ |
311 | ||
3dcf670b | 312 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 313 | { |
73810b77 | 314 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
315 | |
316 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
317 | int alloc_size; |
318 | ||
0b20633d JB |
319 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
320 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
321 | WARN_ON(ops->connect && !ops->disconnect); | |
322 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
323 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
324 | WARN_ON(ops->add_station && !ops->del_station); | |
325 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 326 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 327 | |
79c97e97 | 328 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 329 | |
79c97e97 JB |
330 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
331 | if (!rdev) | |
704232c2 JB |
332 | return NULL; |
333 | ||
79c97e97 | 334 | rdev->ops = ops; |
704232c2 | 335 | |
73810b77 | 336 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 337 | |
f4173766 | 338 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 339 | /* ugh, wrapped! */ |
73810b77 | 340 | atomic_dec(&wiphy_counter); |
79c97e97 | 341 | kfree(rdev); |
704232c2 JB |
342 | return NULL; |
343 | } | |
704232c2 | 344 | |
9b881963 JB |
345 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
346 | rdev->wiphy_idx--; | |
347 | ||
7623225f JB |
348 | /* give it a proper name */ |
349 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
350 | ||
89a54e48 | 351 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
352 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
353 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
354 | spin_lock_init(&rdev->bss_lock); |
355 | INIT_LIST_HEAD(&rdev->bss_list); | |
356 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 357 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
358 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
359 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
360 | #ifdef CONFIG_CFG80211_WEXT |
361 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
362 | #endif | |
363 | ||
79c97e97 JB |
364 | device_initialize(&rdev->wiphy.dev); |
365 | rdev->wiphy.dev.class = &ieee80211_class; | |
366 | rdev->wiphy.dev.platform_data = rdev; | |
367 | ||
78f22b6a JB |
368 | INIT_LIST_HEAD(&rdev->destroy_list); |
369 | spin_lock_init(&rdev->destroy_list_lock); | |
370 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); | |
371 | ||
5be83de5 JB |
372 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
373 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
374 | #endif | |
16cb9d42 | 375 | |
463d0183 JB |
376 | wiphy_net_set(&rdev->wiphy, &init_net); |
377 | ||
79c97e97 JB |
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 | |
ad002395 JB |
392 | init_waitqueue_head(&rdev->dev_wait); |
393 | ||
b9a5f8ca JM |
394 | /* |
395 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
396 | * Fragmentation and RTS threshold are disabled by default with the | |
397 | * special -1 value. | |
398 | */ | |
79c97e97 JB |
399 | rdev->wiphy.retry_short = 7; |
400 | rdev->wiphy.retry_long = 4; | |
401 | rdev->wiphy.frag_threshold = (u32) -1; | |
402 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 403 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 404 | |
9a774c78 AO |
405 | rdev->wiphy.max_num_csa_counters = 1; |
406 | ||
79c97e97 | 407 | return &rdev->wiphy; |
704232c2 JB |
408 | } |
409 | EXPORT_SYMBOL(wiphy_new); | |
410 | ||
7527a782 JB |
411 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
412 | { | |
413 | const struct ieee80211_iface_combination *c; | |
414 | int i, j; | |
415 | ||
7527a782 JB |
416 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
417 | u32 cnt = 0; | |
418 | u16 all_iftypes = 0; | |
419 | ||
420 | c = &wiphy->iface_combinations[i]; | |
421 | ||
11c4a075 SW |
422 | /* |
423 | * Combinations with just one interface aren't real, | |
424 | * however we make an exception for DFS. | |
425 | */ | |
426 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
427 | return -EINVAL; |
428 | ||
429 | /* Need at least one channel */ | |
430 | if (WARN_ON(!c->num_different_channels)) | |
431 | return -EINVAL; | |
432 | ||
d4e50c59 MK |
433 | /* |
434 | * Put a sane limit on maximum number of different | |
435 | * channels to simplify channel accounting code. | |
436 | */ | |
437 | if (WARN_ON(c->num_different_channels > | |
438 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
439 | return -EINVAL; | |
440 | ||
11c4a075 SW |
441 | /* DFS only works on one channel. */ |
442 | if (WARN_ON(c->radar_detect_widths && | |
443 | (c->num_different_channels > 1))) | |
444 | return -EINVAL; | |
445 | ||
7527a782 JB |
446 | if (WARN_ON(!c->n_limits)) |
447 | return -EINVAL; | |
448 | ||
449 | for (j = 0; j < c->n_limits; j++) { | |
450 | u16 types = c->limits[j].types; | |
451 | ||
b6a55015 | 452 | /* interface types shouldn't overlap */ |
7527a782 JB |
453 | if (WARN_ON(types & all_iftypes)) |
454 | return -EINVAL; | |
455 | all_iftypes |= types; | |
456 | ||
457 | if (WARN_ON(!c->limits[j].max)) | |
458 | return -EINVAL; | |
459 | ||
460 | /* Shouldn't list software iftypes in combinations! */ | |
461 | if (WARN_ON(wiphy->software_iftypes & types)) | |
462 | return -EINVAL; | |
463 | ||
98104fde JB |
464 | /* Only a single P2P_DEVICE can be allowed */ |
465 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
466 | c->limits[j].max > 1)) | |
467 | return -EINVAL; | |
468 | ||
7527a782 JB |
469 | cnt += c->limits[j].max; |
470 | /* | |
471 | * Don't advertise an unsupported type | |
472 | * in a combination. | |
473 | */ | |
474 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | /* You can't even choose that many! */ | |
479 | if (WARN_ON(cnt < c->max_interfaces)) | |
480 | return -EINVAL; | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
704232c2 JB |
486 | int wiphy_register(struct wiphy *wiphy) |
487 | { | |
f26cbf40 | 488 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 489 | int res; |
8318d78a JB |
490 | enum ieee80211_band band; |
491 | struct ieee80211_supported_band *sband; | |
492 | bool have_band = false; | |
493 | int i; | |
f59ac048 LR |
494 | u16 ifmodes = wiphy->interface_modes; |
495 | ||
dfb89c56 | 496 | #ifdef CONFIG_PM |
964dc9e2 JB |
497 | if (WARN_ON(wiphy->wowlan && |
498 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
499 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
500 | return -EINVAL; | |
501 | if (WARN_ON(wiphy->wowlan && | |
502 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
503 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 504 | return -EINVAL; |
dfb89c56 | 505 | #endif |
77dbbb13 | 506 | |
be29b99a AK |
507 | if (WARN_ON(wiphy->coalesce && |
508 | (!wiphy->coalesce->n_rules || | |
509 | !wiphy->coalesce->n_patterns) && | |
510 | (!wiphy->coalesce->pattern_min_len || | |
511 | wiphy->coalesce->pattern_min_len > | |
512 | wiphy->coalesce->pattern_max_len))) | |
513 | return -EINVAL; | |
514 | ||
562a7480 JB |
515 | if (WARN_ON(wiphy->ap_sme_capa && |
516 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
517 | return -EINVAL; | |
518 | ||
ef15aac6 JB |
519 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
520 | return -EINVAL; | |
521 | ||
522 | if (WARN_ON(wiphy->addresses && | |
523 | !is_zero_ether_addr(wiphy->perm_addr) && | |
524 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
525 | ETH_ALEN))) | |
526 | return -EINVAL; | |
527 | ||
77765eaf VT |
528 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
529 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
530 | !rdev->ops->set_mac_acl))) | |
531 | return -EINVAL; | |
532 | ||
ef15aac6 JB |
533 | if (wiphy->addresses) |
534 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
535 | ||
f59ac048 LR |
536 | /* sanity check ifmodes */ |
537 | WARN_ON(!ifmodes); | |
2e161f78 | 538 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
539 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
540 | wiphy->interface_modes = ifmodes; | |
8318d78a | 541 | |
7527a782 JB |
542 | res = wiphy_verify_combinations(wiphy); |
543 | if (res) | |
544 | return res; | |
545 | ||
8318d78a JB |
546 | /* sanity check supported bands/channels */ |
547 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
548 | sband = wiphy->bands[band]; | |
549 | if (!sband) | |
550 | continue; | |
551 | ||
552 | sband->band = band; | |
3a0c52a6 VK |
553 | if (WARN_ON(!sband->n_channels)) |
554 | return -EINVAL; | |
555 | /* | |
556 | * on 60gHz band, there are no legacy rates, so | |
557 | * n_bitrates is 0 | |
558 | */ | |
559 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
560 | !sband->n_bitrates)) | |
881d948c JB |
561 | return -EINVAL; |
562 | ||
40db6c77 AK |
563 | /* |
564 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
565 | * modify the sband's ht data even if the driver uses a | |
566 | * global structure for that. | |
567 | */ | |
568 | if (cfg80211_disable_40mhz_24ghz && | |
569 | band == IEEE80211_BAND_2GHZ && | |
570 | sband->ht_cap.ht_supported) { | |
571 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
572 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
573 | } | |
574 | ||
881d948c JB |
575 | /* |
576 | * Since we use a u32 for rate bitmaps in | |
577 | * ieee80211_get_response_rate, we cannot | |
578 | * have more than 32 legacy rates. | |
579 | */ | |
580 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 581 | return -EINVAL; |
8318d78a JB |
582 | |
583 | for (i = 0; i < sband->n_channels; i++) { | |
584 | sband->channels[i].orig_flags = | |
585 | sband->channels[i].flags; | |
c4a9fafc | 586 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
587 | sband->channels[i].orig_mpwr = |
588 | sband->channels[i].max_power; | |
589 | sband->channels[i].band = band; | |
590 | } | |
591 | ||
592 | have_band = true; | |
593 | } | |
594 | ||
595 | if (!have_band) { | |
596 | WARN_ON(1); | |
597 | return -EINVAL; | |
598 | } | |
599 | ||
dfb89c56 | 600 | #ifdef CONFIG_PM |
964dc9e2 JB |
601 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
602 | (!rdev->wiphy.wowlan->pattern_min_len || | |
603 | rdev->wiphy.wowlan->pattern_min_len > | |
604 | rdev->wiphy.wowlan->pattern_max_len))) | |
605 | return -EINVAL; | |
dfb89c56 | 606 | #endif |
ff1b6e69 | 607 | |
8318d78a JB |
608 | /* check and set up bitrates */ |
609 | ieee80211_set_bitrate_flags(wiphy); | |
610 | ||
00c3a6ed JB |
611 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
612 | ||
aa5f66d5 | 613 | rtnl_lock(); |
79c97e97 | 614 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 615 | if (res) { |
aa5f66d5 | 616 | rtnl_unlock(); |
c3d34d5d JL |
617 | return res; |
618 | } | |
1f87f7d3 | 619 | |
2f0accc1 | 620 | /* set up regulatory info */ |
57b5ce07 | 621 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 622 | |
5f2aa25e | 623 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 624 | cfg80211_rdev_list_generation++; |
704232c2 JB |
625 | |
626 | /* add to debugfs */ | |
79c97e97 JB |
627 | rdev->wiphy.debugfsdir = |
628 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 629 | ieee80211_debugfs_dir); |
79c97e97 JB |
630 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
631 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 632 | |
a2f73b6c | 633 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
634 | struct regulatory_request request; |
635 | ||
636 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
637 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
638 | request.alpha2[0] = '9'; | |
639 | request.alpha2[1] = '9'; | |
640 | ||
641 | nl80211_send_reg_change_event(&request); | |
642 | } | |
643 | ||
79c97e97 | 644 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 645 | |
ecb44335 SG |
646 | rdev->wiphy.registered = true; |
647 | rtnl_unlock(); | |
aa5f66d5 JB |
648 | |
649 | res = rfkill_register(rdev->rfkill); | |
650 | if (res) { | |
651 | rfkill_destroy(rdev->rfkill); | |
652 | rdev->rfkill = NULL; | |
653 | wiphy_unregister(&rdev->wiphy); | |
654 | return res; | |
655 | } | |
656 | ||
3bb20556 JB |
657 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
658 | ||
2f0accc1 | 659 | return 0; |
704232c2 JB |
660 | } |
661 | EXPORT_SYMBOL(wiphy_register); | |
662 | ||
1f87f7d3 JB |
663 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
664 | { | |
f26cbf40 | 665 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 666 | |
79c97e97 | 667 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 668 | return; |
79c97e97 JB |
669 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
670 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
671 | } |
672 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
673 | ||
674 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
675 | { | |
f26cbf40 | 676 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 677 | |
79c97e97 | 678 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
679 | } |
680 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
681 | ||
704232c2 JB |
682 | void wiphy_unregister(struct wiphy *wiphy) |
683 | { | |
f26cbf40 | 684 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 685 | |
ad002395 JB |
686 | wait_event(rdev->dev_wait, ({ |
687 | int __count; | |
5fe231e8 | 688 | rtnl_lock(); |
ad002395 | 689 | __count = rdev->opencount; |
5fe231e8 | 690 | rtnl_unlock(); |
c4f60846 | 691 | __count == 0; })); |
ad002395 | 692 | |
aa5f66d5 JB |
693 | if (rdev->rfkill) |
694 | rfkill_unregister(rdev->rfkill); | |
256c90de | 695 | |
5fe231e8 | 696 | rtnl_lock(); |
3bb20556 | 697 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
698 | rdev->wiphy.registered = false; |
699 | ||
2fd05115 | 700 | WARN_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
701 | |
702 | /* | |
703 | * First remove the hardware from everywhere, this makes | |
704 | * it impossible to find from userspace. | |
705 | */ | |
7bcfaf2f | 706 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
707 | list_del_rcu(&rdev->list); |
708 | synchronize_rcu(); | |
f16bfc1c | 709 | |
bfead080 LR |
710 | /* |
711 | * If this device got a regulatory hint tell core its | |
712 | * free to listen now to a new shiny device regulatory hint | |
713 | */ | |
714 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 715 | |
f5ea9120 | 716 | cfg80211_rdev_list_generation++; |
79c97e97 | 717 | device_del(&rdev->wiphy.dev); |
704232c2 | 718 | |
5fe231e8 | 719 | rtnl_unlock(); |
6682588a | 720 | |
36e6fea8 | 721 | flush_work(&rdev->scan_done_wk); |
6682588a | 722 | cancel_work_sync(&rdev->conn_work); |
6682588a | 723 | flush_work(&rdev->event_work); |
04f39047 | 724 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 725 | flush_work(&rdev->destroy_work); |
6d52563f | 726 | |
6abb9cb9 JB |
727 | #ifdef CONFIG_PM |
728 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 729 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 730 | #endif |
6d52563f | 731 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 732 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
733 | } |
734 | EXPORT_SYMBOL(wiphy_unregister); | |
735 | ||
79c97e97 | 736 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 737 | { |
2a519311 | 738 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 739 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 740 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
741 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
742 | list_del(®->list); | |
743 | kfree(reg); | |
744 | } | |
79c97e97 | 745 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 746 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 747 | kfree(rdev); |
704232c2 JB |
748 | } |
749 | ||
750 | void wiphy_free(struct wiphy *wiphy) | |
751 | { | |
752 | put_device(&wiphy->dev); | |
753 | } | |
754 | EXPORT_SYMBOL(wiphy_free); | |
755 | ||
1f87f7d3 JB |
756 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
757 | { | |
f26cbf40 | 758 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 759 | |
79c97e97 JB |
760 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
761 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
762 | } |
763 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
764 | ||
98104fde JB |
765 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
766 | { | |
f26cbf40 | 767 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
768 | |
769 | ASSERT_RTNL(); | |
770 | ||
771 | if (WARN_ON(wdev->netdev)) | |
772 | return; | |
773 | ||
98104fde JB |
774 | list_del_rcu(&wdev->list); |
775 | rdev->devlist_generation++; | |
776 | ||
777 | switch (wdev->iftype) { | |
778 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 779 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
780 | break; |
781 | default: | |
782 | WARN_ON_ONCE(1); | |
783 | break; | |
784 | } | |
98104fde JB |
785 | } |
786 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
787 | ||
f1e3d556 | 788 | static const struct device_type wiphy_type = { |
053a93dd MH |
789 | .name = "wlan", |
790 | }; | |
791 | ||
dbbae26a MK |
792 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
793 | enum nl80211_iftype iftype, int num) | |
794 | { | |
c5a7e582 | 795 | ASSERT_RTNL(); |
dbbae26a MK |
796 | |
797 | rdev->num_running_ifaces += num; | |
798 | if (iftype == NL80211_IFTYPE_MONITOR) | |
799 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
800 | } |
801 | ||
f04c2203 MK |
802 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
803 | struct wireless_dev *wdev) | |
81256969 SG |
804 | { |
805 | struct net_device *dev = wdev->netdev; | |
806 | ||
24d584d7 | 807 | ASSERT_RTNL(); |
f04c2203 | 808 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 809 | |
81256969 SG |
810 | switch (wdev->iftype) { |
811 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 812 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
813 | break; |
814 | case NL80211_IFTYPE_P2P_CLIENT: | |
815 | case NL80211_IFTYPE_STATION: | |
24d584d7 BB |
816 | if (rdev->sched_scan_req && dev == rdev->sched_scan_req->dev) |
817 | __cfg80211_stop_sched_scan(rdev, false); | |
81256969 | 818 | |
81256969 SG |
819 | #ifdef CONFIG_CFG80211_WEXT |
820 | kfree(wdev->wext.ie); | |
821 | wdev->wext.ie = NULL; | |
822 | wdev->wext.ie_len = 0; | |
823 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
824 | #endif | |
83739b03 JB |
825 | cfg80211_disconnect(rdev, dev, |
826 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
827 | break; |
828 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 829 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
830 | break; |
831 | case NL80211_IFTYPE_AP: | |
74418ede | 832 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 833 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 SG |
834 | break; |
835 | default: | |
836 | break; | |
837 | } | |
81256969 SG |
838 | } |
839 | ||
f04c2203 MK |
840 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
841 | struct wireless_dev *wdev) | |
842 | { | |
843 | wdev_lock(wdev); | |
844 | __cfg80211_leave(rdev, wdev); | |
845 | wdev_unlock(wdev); | |
846 | } | |
847 | ||
848 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
849 | gfp_t gfp) | |
850 | { | |
851 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
852 | struct cfg80211_event *ev; | |
853 | unsigned long flags; | |
854 | ||
855 | trace_cfg80211_stop_iface(wiphy, wdev); | |
856 | ||
857 | ev = kzalloc(sizeof(*ev), gfp); | |
858 | if (!ev) | |
859 | return; | |
860 | ||
861 | ev->type = EVENT_STOPPED; | |
862 | ||
863 | spin_lock_irqsave(&wdev->event_lock, flags); | |
864 | list_add_tail(&ev->list, &wdev->event_list); | |
865 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
866 | queue_work(cfg80211_wq, &rdev->event_work); | |
867 | } | |
868 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
869 | ||
c4f60846 | 870 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 871 | unsigned long state, void *ptr) |
704232c2 | 872 | { |
351638e7 | 873 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 874 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 JB |
875 | struct cfg80211_registered_device *rdev; |
876 | ||
2a783c13 | 877 | if (!wdev) |
1f87f7d3 | 878 | return NOTIFY_DONE; |
704232c2 | 879 | |
f26cbf40 | 880 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 881 | |
2a783c13 | 882 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 883 | |
704232c2 | 884 | switch (state) { |
053a93dd MH |
885 | case NETDEV_POST_INIT: |
886 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
887 | break; | |
704232c2 | 888 | case NETDEV_REGISTER: |
0ff6ce7b JB |
889 | /* |
890 | * NB: cannot take rdev->mtx here because this may be | |
891 | * called within code protected by it when interfaces | |
892 | * are added with nl80211. | |
893 | */ | |
667503dd JB |
894 | mutex_init(&wdev->mtx); |
895 | INIT_LIST_HEAD(&wdev->event_list); | |
896 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
897 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
898 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 899 | |
89a54e48 JB |
900 | wdev->identifier = ++rdev->wdev_id; |
901 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 902 | rdev->devlist_generation++; |
463d0183 JB |
903 | /* can only change netns with wiphy */ |
904 | dev->features |= NETIF_F_NETNS_LOCAL; | |
905 | ||
704232c2 JB |
906 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
907 | "phy80211")) { | |
e9c0268f | 908 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 909 | } |
2a783c13 | 910 | wdev->netdev = dev; |
3d23e349 | 911 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
912 | wdev->wext.default_key = -1; |
913 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 914 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
915 | #endif |
916 | ||
5be83de5 | 917 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 918 | wdev->ps = true; |
5be83de5 | 919 | else |
ffb9eb3d | 920 | wdev->ps = false; |
9043f3b8 JO |
921 | /* allow mac80211 to determine the timeout */ |
922 | wdev->ps_timeout = -1; | |
ffb9eb3d | 923 | |
ad4bb6f8 | 924 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 925 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
926 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
927 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 928 | break; |
04a773ad | 929 | case NETDEV_GOING_DOWN: |
81256969 | 930 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
931 | break; |
932 | case NETDEV_DOWN: | |
dbbae26a | 933 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
934 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
935 | if (WARN_ON(!rdev->scan_req->notified)) | |
936 | rdev->scan_req->aborted = true; | |
f9d15d16 | 937 | ___cfg80211_scan_done(rdev, false); |
a617302c | 938 | } |
5fe231e8 JB |
939 | |
940 | if (WARN_ON(rdev->sched_scan_req && | |
941 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
942 | __cfg80211_stop_sched_scan(rdev, false); | |
943 | } | |
944 | ||
945 | rdev->opencount--; | |
946 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
947 | break; |
948 | case NETDEV_UP: | |
4290cb4b | 949 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 950 | wdev_lock(wdev); |
f2129354 | 951 | switch (wdev->iftype) { |
29cbe68c | 952 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 953 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 954 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 955 | break; |
f2129354 | 956 | case NL80211_IFTYPE_STATION: |
fffd0934 | 957 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 958 | break; |
29cbe68c | 959 | #endif |
c80d545d | 960 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 961 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
962 | { |
963 | /* backward compat code... */ | |
964 | struct mesh_setup setup; | |
965 | memcpy(&setup, &default_mesh_setup, | |
966 | sizeof(setup)); | |
967 | /* back compat only needed for mesh_id */ | |
968 | setup.mesh_id = wdev->ssid; | |
969 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
970 | if (wdev->mesh_id_up_len) | |
971 | __cfg80211_join_mesh(rdev, dev, | |
972 | &setup, | |
973 | &default_mesh_config); | |
974 | break; | |
975 | } | |
976 | #endif | |
f2129354 | 977 | default: |
04a773ad | 978 | break; |
f2129354 | 979 | } |
667503dd | 980 | wdev_unlock(wdev); |
ad002395 | 981 | rdev->opencount++; |
bf6a0579 JO |
982 | |
983 | /* | |
984 | * Configure power management to the driver here so that its | |
985 | * correctly set also after interface type changes etc. | |
986 | */ | |
5966f2dd EP |
987 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
988 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 989 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
990 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
991 | wdev->ps_timeout)) { | |
bf6a0579 JO |
992 | /* assume this means it's off */ |
993 | wdev->ps = false; | |
994 | } | |
2a783c13 | 995 | break; |
704232c2 | 996 | case NETDEV_UNREGISTER: |
e40cbdac JB |
997 | /* |
998 | * It is possible to get NETDEV_UNREGISTER | |
999 | * multiple times. To detect that, check | |
1000 | * that the interface is still on the list | |
1001 | * of registered interfaces, and only then | |
1002 | * remove and clean it up. | |
1003 | */ | |
2a783c13 | 1004 | if (!list_empty(&wdev->list)) { |
704232c2 | 1005 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 1006 | list_del_rcu(&wdev->list); |
f5ea9120 | 1007 | rdev->devlist_generation++; |
2e161f78 | 1008 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 1009 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 1010 | kfree(wdev->wext.keys); |
fffd0934 | 1011 | #endif |
e40cbdac | 1012 | } |
5f2aa25e JB |
1013 | /* |
1014 | * synchronise (so that we won't find this netdev | |
1015 | * from other code any more) and then clear the list | |
1016 | * head so that the above code can safely check for | |
1017 | * !list_empty() to avoid double-cleanup. | |
1018 | */ | |
1019 | synchronize_rcu(); | |
1020 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1021 | /* |
1022 | * Ensure that all events have been processed and | |
1023 | * freed. | |
1024 | */ | |
1025 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1026 | |
1027 | if (WARN_ON(wdev->current_bss)) { | |
1028 | cfg80211_unhold_bss(wdev->current_bss); | |
1029 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1030 | wdev->current_bss = NULL; | |
1031 | } | |
704232c2 | 1032 | break; |
1f87f7d3 | 1033 | case NETDEV_PRE_UP: |
0b20633d JB |
1034 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1035 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1036 | if (rfkill_blocked(rdev->rfkill)) |
1037 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1038 | break; |
6784c7db ZG |
1039 | default: |
1040 | return NOTIFY_DONE; | |
704232c2 JB |
1041 | } |
1042 | ||
6784c7db | 1043 | return NOTIFY_OK; |
704232c2 JB |
1044 | } |
1045 | ||
1046 | static struct notifier_block cfg80211_netdev_notifier = { | |
1047 | .notifier_call = cfg80211_netdev_notifier_call, | |
1048 | }; | |
1049 | ||
463d0183 JB |
1050 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1051 | { | |
1052 | struct cfg80211_registered_device *rdev; | |
1053 | ||
1054 | rtnl_lock(); | |
463d0183 JB |
1055 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1056 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1057 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1058 | } | |
463d0183 JB |
1059 | rtnl_unlock(); |
1060 | } | |
1061 | ||
1062 | static struct pernet_operations cfg80211_pernet_ops = { | |
1063 | .exit = cfg80211_pernet_exit, | |
1064 | }; | |
1065 | ||
1066 | static int __init cfg80211_init(void) | |
704232c2 | 1067 | { |
b2e1b302 LR |
1068 | int err; |
1069 | ||
463d0183 JB |
1070 | err = register_pernet_device(&cfg80211_pernet_ops); |
1071 | if (err) | |
1072 | goto out_fail_pernet; | |
1073 | ||
b2e1b302 | 1074 | err = wiphy_sysfs_init(); |
704232c2 JB |
1075 | if (err) |
1076 | goto out_fail_sysfs; | |
1077 | ||
1078 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1079 | if (err) | |
1080 | goto out_fail_notifier; | |
1081 | ||
55682965 JB |
1082 | err = nl80211_init(); |
1083 | if (err) | |
1084 | goto out_fail_nl80211; | |
1085 | ||
704232c2 JB |
1086 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1087 | ||
b2e1b302 LR |
1088 | err = regulatory_init(); |
1089 | if (err) | |
1090 | goto out_fail_reg; | |
1091 | ||
e60d7443 | 1092 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1093 | if (!cfg80211_wq) { |
1094 | err = -ENOMEM; | |
e60d7443 | 1095 | goto out_fail_wq; |
f00f188f | 1096 | } |
e60d7443 | 1097 | |
704232c2 JB |
1098 | return 0; |
1099 | ||
e60d7443 AB |
1100 | out_fail_wq: |
1101 | regulatory_exit(); | |
b2e1b302 LR |
1102 | out_fail_reg: |
1103 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
1104 | out_fail_nl80211: |
1105 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1106 | out_fail_notifier: |
1107 | wiphy_sysfs_exit(); | |
1108 | out_fail_sysfs: | |
463d0183 JB |
1109 | unregister_pernet_device(&cfg80211_pernet_ops); |
1110 | out_fail_pernet: | |
704232c2 JB |
1111 | return err; |
1112 | } | |
3a462465 | 1113 | subsys_initcall(cfg80211_init); |
704232c2 | 1114 | |
f884e387 | 1115 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1116 | { |
1117 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1118 | nl80211_exit(); |
704232c2 JB |
1119 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1120 | wiphy_sysfs_exit(); | |
b2e1b302 | 1121 | regulatory_exit(); |
463d0183 | 1122 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1123 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1124 | } |
1125 | module_exit(cfg80211_exit); |