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 |
53873f13 | 6 | * Copyright 2015 Intel Deutschland GmbH |
704232c2 JB |
7 | */ |
8 | ||
e9c0268f JP |
9 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
10 | ||
704232c2 JB |
11 | #include <linux/if.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/err.h> | |
704232c2 | 14 | #include <linux/list.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
704232c2 JB |
16 | #include <linux/nl80211.h> |
17 | #include <linux/debugfs.h> | |
18 | #include <linux/notifier.h> | |
19 | #include <linux/device.h> | |
16a832e7 | 20 | #include <linux/etherdevice.h> |
1f87f7d3 | 21 | #include <linux/rtnetlink.h> |
d43c36dc | 22 | #include <linux/sched.h> |
704232c2 JB |
23 | #include <net/genetlink.h> |
24 | #include <net/cfg80211.h> | |
55682965 | 25 | #include "nl80211.h" |
704232c2 JB |
26 | #include "core.h" |
27 | #include "sysfs.h" | |
1ac61302 | 28 | #include "debugfs.h" |
a9a11622 | 29 | #include "wext-compat.h" |
e35e4d28 | 30 | #include "rdev-ops.h" |
704232c2 JB |
31 | |
32 | /* name for sysfs, %d is appended */ | |
33 | #define PHY_NAME "phy" | |
34 | ||
35 | MODULE_AUTHOR("Johannes Berg"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 38 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 39 | |
5fe231e8 | 40 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 41 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 42 | int cfg80211_rdev_list_generation; |
a1794390 | 43 | |
704232c2 JB |
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 | ||
79c97e97 | 55 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 56 | { |
79c97e97 | 57 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 58 | |
5fe231e8 | 59 | ASSERT_RTNL(); |
761cf7ec | 60 | |
79c97e97 JB |
61 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
62 | if (rdev->wiphy_idx == wiphy_idx) { | |
63 | result = rdev; | |
55682965 JB |
64 | break; |
65 | } | |
66 | } | |
67 | ||
68 | return result; | |
69 | } | |
70 | ||
806a9e39 LR |
71 | int get_wiphy_idx(struct wiphy *wiphy) |
72 | { | |
f26cbf40 | 73 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 74 | |
79c97e97 | 75 | return rdev->wiphy_idx; |
806a9e39 LR |
76 | } |
77 | ||
806a9e39 LR |
78 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
79 | { | |
79c97e97 | 80 | struct cfg80211_registered_device *rdev; |
806a9e39 | 81 | |
5fe231e8 | 82 | ASSERT_RTNL(); |
806a9e39 | 83 | |
79c97e97 JB |
84 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
85 | if (!rdev) | |
806a9e39 | 86 | return NULL; |
79c97e97 | 87 | return &rdev->wiphy; |
806a9e39 LR |
88 | } |
89 | ||
1998d90a BG |
90 | static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev, |
91 | const char *newname) | |
55682965 | 92 | { |
79c97e97 | 93 | struct cfg80211_registered_device *rdev2; |
1998d90a | 94 | int wiphy_idx, taken = -1, digits; |
55682965 | 95 | |
5fe231e8 | 96 | ASSERT_RTNL(); |
2940bb69 | 97 | |
7623225f JB |
98 | /* prohibit calling the thing phy%d when %d is not its number */ |
99 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
100 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
101 | /* count number of places needed to print wiphy_idx */ | |
102 | digits = 1; | |
103 | while (wiphy_idx /= 10) | |
104 | digits++; | |
105 | /* | |
106 | * deny the name if it is phy<idx> where <idx> is printed | |
107 | * without leading zeroes. taken == strlen(newname) here | |
108 | */ | |
109 | if (taken == strlen(PHY_NAME) + digits) | |
110 | return -EINVAL; | |
111 | } | |
112 | ||
1998d90a BG |
113 | /* Ensure another device does not already have this name. */ |
114 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) | |
115 | if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0) | |
116 | return -EINVAL; | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, | |
122 | char *newname) | |
123 | { | |
124 | int result; | |
125 | ||
126 | ASSERT_RTNL(); | |
7623225f | 127 | |
2940bb69 | 128 | /* Ignore nop renames */ |
1998d90a | 129 | if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0) |
4bbf4d56 | 130 | return 0; |
2940bb69 | 131 | |
1998d90a BG |
132 | result = cfg80211_dev_check_name(rdev, newname); |
133 | if (result < 0) | |
134 | return result; | |
55682965 | 135 | |
55682965 JB |
136 | result = device_rename(&rdev->wiphy.dev, newname); |
137 | if (result) | |
4bbf4d56 | 138 | return result; |
55682965 | 139 | |
33c0360b JB |
140 | if (rdev->wiphy.debugfsdir && |
141 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
142 | rdev->wiphy.debugfsdir, |
143 | rdev->wiphy.debugfsdir->d_parent, | |
144 | newname)) | |
e9c0268f | 145 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 146 | |
3bb20556 | 147 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
55682965 | 148 | |
4bbf4d56 | 149 | return 0; |
55682965 JB |
150 | } |
151 | ||
463d0183 JB |
152 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
153 | struct net *net) | |
154 | { | |
155 | struct wireless_dev *wdev; | |
156 | int err = 0; | |
157 | ||
5be83de5 | 158 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
159 | return -EOPNOTSUPP; |
160 | ||
53873f13 | 161 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
ba22fb5b JB |
162 | if (!wdev->netdev) |
163 | continue; | |
463d0183 JB |
164 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
165 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
166 | if (err) | |
167 | break; | |
168 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
169 | } | |
170 | ||
171 | if (err) { | |
172 | /* failed -- clean up to old netns */ | |
173 | net = wiphy_net(&rdev->wiphy); | |
174 | ||
53873f13 JB |
175 | list_for_each_entry_continue_reverse(wdev, |
176 | &rdev->wiphy.wdev_list, | |
463d0183 | 177 | list) { |
ba22fb5b JB |
178 | if (!wdev->netdev) |
179 | continue; | |
463d0183 JB |
180 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
181 | err = dev_change_net_namespace(wdev->netdev, net, | |
182 | "wlan%d"); | |
183 | WARN_ON(err); | |
184 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
185 | } | |
04600794 JB |
186 | |
187 | return err; | |
463d0183 JB |
188 | } |
189 | ||
190 | wiphy_net_set(&rdev->wiphy, net); | |
191 | ||
04600794 JB |
192 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
193 | WARN_ON(err); | |
194 | ||
195 | return 0; | |
463d0183 JB |
196 | } |
197 | ||
1f87f7d3 JB |
198 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
199 | { | |
79c97e97 | 200 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 201 | |
e35e4d28 | 202 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
203 | } |
204 | ||
f9f47529 JB |
205 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
206 | struct wireless_dev *wdev) | |
207 | { | |
5fe231e8 | 208 | ASSERT_RTNL(); |
f9f47529 JB |
209 | |
210 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
211 | return; | |
212 | ||
213 | if (!wdev->p2p_started) | |
214 | return; | |
215 | ||
216 | rdev_stop_p2p_device(rdev, wdev); | |
217 | wdev->p2p_started = false; | |
218 | ||
219 | rdev->opencount--; | |
220 | ||
a617302c JB |
221 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
222 | if (WARN_ON(!rdev->scan_req->notified)) | |
223 | rdev->scan_req->aborted = true; | |
f9d15d16 | 224 | ___cfg80211_scan_done(rdev, false); |
a617302c | 225 | } |
f9f47529 JB |
226 | } |
227 | ||
f6837ba8 | 228 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 229 | { |
f6837ba8 | 230 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
231 | struct wireless_dev *wdev; |
232 | ||
f6837ba8 | 233 | ASSERT_RTNL(); |
f9f47529 | 234 | |
53873f13 | 235 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
98104fde | 236 | if (wdev->netdev) { |
ba22fb5b | 237 | dev_close(wdev->netdev); |
98104fde JB |
238 | continue; |
239 | } | |
240 | /* otherwise, check iftype */ | |
241 | switch (wdev->iftype) { | |
242 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 243 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
244 | break; |
245 | default: | |
246 | break; | |
247 | } | |
248 | } | |
f6837ba8 JB |
249 | } |
250 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 251 | |
f6837ba8 JB |
252 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
253 | { | |
254 | struct cfg80211_registered_device *rdev = data; | |
255 | ||
256 | if (!blocked) | |
257 | return 0; | |
258 | ||
259 | rtnl_lock(); | |
260 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
261 | rtnl_unlock(); |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
267 | { | |
79c97e97 | 268 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 269 | |
79c97e97 JB |
270 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
271 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
272 | } |
273 | ||
667503dd JB |
274 | static void cfg80211_event_work(struct work_struct *work) |
275 | { | |
276 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
277 | |
278 | rdev = container_of(work, struct cfg80211_registered_device, | |
279 | event_work); | |
280 | ||
281 | rtnl_lock(); | |
3d54d255 | 282 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
283 | rtnl_unlock(); |
284 | } | |
285 | ||
78f22b6a JB |
286 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
287 | { | |
288 | struct cfg80211_iface_destroy *item; | |
289 | ||
290 | ASSERT_RTNL(); | |
291 | ||
292 | spin_lock_irq(&rdev->destroy_list_lock); | |
293 | while ((item = list_first_entry_or_null(&rdev->destroy_list, | |
294 | struct cfg80211_iface_destroy, | |
295 | list))) { | |
296 | struct wireless_dev *wdev, *tmp; | |
297 | u32 nlportid = item->nlportid; | |
298 | ||
299 | list_del(&item->list); | |
300 | kfree(item); | |
301 | spin_unlock_irq(&rdev->destroy_list_lock); | |
302 | ||
53873f13 JB |
303 | list_for_each_entry_safe(wdev, tmp, |
304 | &rdev->wiphy.wdev_list, list) { | |
78f22b6a JB |
305 | if (nlportid == wdev->owner_nlportid) |
306 | rdev_del_virtual_intf(rdev, wdev); | |
307 | } | |
308 | ||
309 | spin_lock_irq(&rdev->destroy_list_lock); | |
310 | } | |
311 | spin_unlock_irq(&rdev->destroy_list_lock); | |
312 | } | |
313 | ||
314 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
315 | { | |
316 | struct cfg80211_registered_device *rdev; | |
317 | ||
318 | rdev = container_of(work, struct cfg80211_registered_device, | |
319 | destroy_work); | |
320 | ||
321 | rtnl_lock(); | |
322 | cfg80211_destroy_ifaces(rdev); | |
323 | rtnl_unlock(); | |
324 | } | |
325 | ||
93a1e86c JR |
326 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
327 | { | |
328 | struct cfg80211_registered_device *rdev; | |
329 | ||
330 | rdev = container_of(work, struct cfg80211_registered_device, | |
331 | sched_scan_stop_wk); | |
332 | ||
333 | rtnl_lock(); | |
334 | ||
335 | __cfg80211_stop_sched_scan(rdev, false); | |
336 | ||
337 | rtnl_unlock(); | |
338 | } | |
339 | ||
704232c2 JB |
340 | /* exported functions */ |
341 | ||
1998d90a BG |
342 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
343 | const char *requested_name) | |
704232c2 | 344 | { |
73810b77 | 345 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
346 | |
347 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
348 | int alloc_size; |
349 | ||
0b20633d JB |
350 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
351 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
352 | WARN_ON(ops->connect && !ops->disconnect); | |
353 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
354 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
355 | WARN_ON(ops->add_station && !ops->del_station); | |
356 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 357 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
358 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
359 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
360 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
361 | WARN_ON(ops->suspend && !ops->resume); | |
362 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
363 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
364 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
365 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
366 | WARN_ON(ops->set_tx_power && !ops->get_tx_power); | |
367 | WARN_ON(ops->set_antenna && !ops->get_antenna); | |
41ade00f | 368 | |
79c97e97 | 369 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 370 | |
79c97e97 JB |
371 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
372 | if (!rdev) | |
704232c2 JB |
373 | return NULL; |
374 | ||
79c97e97 | 375 | rdev->ops = ops; |
704232c2 | 376 | |
73810b77 | 377 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 378 | |
f4173766 | 379 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 380 | /* ugh, wrapped! */ |
73810b77 | 381 | atomic_dec(&wiphy_counter); |
79c97e97 | 382 | kfree(rdev); |
704232c2 JB |
383 | return NULL; |
384 | } | |
704232c2 | 385 | |
9b881963 JB |
386 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
387 | rdev->wiphy_idx--; | |
388 | ||
7623225f | 389 | /* give it a proper name */ |
1998d90a BG |
390 | if (requested_name && requested_name[0]) { |
391 | int rv; | |
392 | ||
393 | rtnl_lock(); | |
394 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
395 | ||
396 | if (rv < 0) { | |
397 | rtnl_unlock(); | |
398 | goto use_default_name; | |
399 | } | |
400 | ||
401 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
402 | rtnl_unlock(); | |
403 | if (rv) | |
404 | goto use_default_name; | |
405 | } else { | |
406 | use_default_name: | |
407 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
408 | * the restrictions on phy names. Probably this call could | |
409 | * fail if some other part of the kernel (re)named a device | |
410 | * phyX. But, might should add some locking and check return | |
411 | * value, and use a different name if this one exists? | |
412 | */ | |
413 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
414 | } | |
7623225f | 415 | |
53873f13 | 416 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
417 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
418 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
419 | spin_lock_init(&rdev->bss_lock); |
420 | INIT_LIST_HEAD(&rdev->bss_list); | |
421 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 422 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
33d8783c JB |
423 | INIT_LIST_HEAD(&rdev->mlme_unreg); |
424 | spin_lock_init(&rdev->mlme_unreg_lock); | |
425 | INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk); | |
04f39047 SW |
426 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
427 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
428 | #ifdef CONFIG_CFG80211_WEXT |
429 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
430 | #endif | |
431 | ||
79c97e97 JB |
432 | device_initialize(&rdev->wiphy.dev); |
433 | rdev->wiphy.dev.class = &ieee80211_class; | |
434 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 435 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 436 | |
78f22b6a JB |
437 | INIT_LIST_HEAD(&rdev->destroy_list); |
438 | spin_lock_init(&rdev->destroy_list_lock); | |
439 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); | |
93a1e86c | 440 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
78f22b6a | 441 | |
5be83de5 JB |
442 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
443 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
444 | #endif | |
16cb9d42 | 445 | |
463d0183 JB |
446 | wiphy_net_set(&rdev->wiphy, &init_net); |
447 | ||
79c97e97 JB |
448 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
449 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
450 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
451 | &rdev->rfkill_ops, rdev); | |
452 | ||
453 | if (!rdev->rfkill) { | |
454 | kfree(rdev); | |
1f87f7d3 JB |
455 | return NULL; |
456 | } | |
457 | ||
79c97e97 JB |
458 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
459 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
460 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 461 | |
ad002395 JB |
462 | init_waitqueue_head(&rdev->dev_wait); |
463 | ||
b9a5f8ca JM |
464 | /* |
465 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
466 | * Fragmentation and RTS threshold are disabled by default with the | |
467 | * special -1 value. | |
468 | */ | |
79c97e97 JB |
469 | rdev->wiphy.retry_short = 7; |
470 | rdev->wiphy.retry_long = 4; | |
471 | rdev->wiphy.frag_threshold = (u32) -1; | |
472 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 473 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 474 | |
9a774c78 AO |
475 | rdev->wiphy.max_num_csa_counters = 1; |
476 | ||
3b06d277 AS |
477 | rdev->wiphy.max_sched_scan_plans = 1; |
478 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
479 | ||
79c97e97 | 480 | return &rdev->wiphy; |
704232c2 | 481 | } |
1998d90a | 482 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 483 | |
7527a782 JB |
484 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
485 | { | |
486 | const struct ieee80211_iface_combination *c; | |
487 | int i, j; | |
488 | ||
7527a782 JB |
489 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
490 | u32 cnt = 0; | |
491 | u16 all_iftypes = 0; | |
492 | ||
493 | c = &wiphy->iface_combinations[i]; | |
494 | ||
11c4a075 SW |
495 | /* |
496 | * Combinations with just one interface aren't real, | |
497 | * however we make an exception for DFS. | |
498 | */ | |
499 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
500 | return -EINVAL; |
501 | ||
502 | /* Need at least one channel */ | |
503 | if (WARN_ON(!c->num_different_channels)) | |
504 | return -EINVAL; | |
505 | ||
d4e50c59 MK |
506 | /* |
507 | * Put a sane limit on maximum number of different | |
508 | * channels to simplify channel accounting code. | |
509 | */ | |
510 | if (WARN_ON(c->num_different_channels > | |
511 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
512 | return -EINVAL; | |
513 | ||
11c4a075 SW |
514 | /* DFS only works on one channel. */ |
515 | if (WARN_ON(c->radar_detect_widths && | |
516 | (c->num_different_channels > 1))) | |
517 | return -EINVAL; | |
518 | ||
7527a782 JB |
519 | if (WARN_ON(!c->n_limits)) |
520 | return -EINVAL; | |
521 | ||
522 | for (j = 0; j < c->n_limits; j++) { | |
523 | u16 types = c->limits[j].types; | |
524 | ||
b6a55015 | 525 | /* interface types shouldn't overlap */ |
7527a782 JB |
526 | if (WARN_ON(types & all_iftypes)) |
527 | return -EINVAL; | |
528 | all_iftypes |= types; | |
529 | ||
530 | if (WARN_ON(!c->limits[j].max)) | |
531 | return -EINVAL; | |
532 | ||
533 | /* Shouldn't list software iftypes in combinations! */ | |
534 | if (WARN_ON(wiphy->software_iftypes & types)) | |
535 | return -EINVAL; | |
536 | ||
98104fde JB |
537 | /* Only a single P2P_DEVICE can be allowed */ |
538 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
539 | c->limits[j].max > 1)) | |
540 | return -EINVAL; | |
541 | ||
7527a782 JB |
542 | cnt += c->limits[j].max; |
543 | /* | |
544 | * Don't advertise an unsupported type | |
545 | * in a combination. | |
546 | */ | |
547 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
551 | /* You can't even choose that many! */ | |
552 | if (WARN_ON(cnt < c->max_interfaces)) | |
553 | return -EINVAL; | |
554 | } | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
704232c2 JB |
559 | int wiphy_register(struct wiphy *wiphy) |
560 | { | |
f26cbf40 | 561 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 562 | int res; |
57fbcce3 | 563 | enum nl80211_band band; |
8318d78a JB |
564 | struct ieee80211_supported_band *sband; |
565 | bool have_band = false; | |
566 | int i; | |
f59ac048 LR |
567 | u16 ifmodes = wiphy->interface_modes; |
568 | ||
dfb89c56 | 569 | #ifdef CONFIG_PM |
964dc9e2 JB |
570 | if (WARN_ON(wiphy->wowlan && |
571 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
572 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
573 | return -EINVAL; | |
574 | if (WARN_ON(wiphy->wowlan && | |
575 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
576 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 577 | return -EINVAL; |
dfb89c56 | 578 | #endif |
1057d35e AN |
579 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
580 | (!rdev->ops->tdls_channel_switch || | |
581 | !rdev->ops->tdls_cancel_channel_switch))) | |
582 | return -EINVAL; | |
77dbbb13 | 583 | |
ad932f04 AN |
584 | /* |
585 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
586 | * opt-out of enforcement checking | |
587 | */ | |
588 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
589 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
590 | BIT(NL80211_IFTYPE_AP) | | |
591 | BIT(NL80211_IFTYPE_P2P_GO) | | |
592 | BIT(NL80211_IFTYPE_ADHOC) | | |
593 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
594 | BIT(NL80211_IFTYPE_AP_VLAN) | | |
595 | BIT(NL80211_IFTYPE_MONITOR))) | |
596 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
597 | ||
b0d7aa59 JD |
598 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
599 | (wiphy->regulatory_flags & | |
600 | (REGULATORY_CUSTOM_REG | | |
601 | REGULATORY_STRICT_REG | | |
602 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
603 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
604 | return -EINVAL; | |
605 | ||
be29b99a AK |
606 | if (WARN_ON(wiphy->coalesce && |
607 | (!wiphy->coalesce->n_rules || | |
608 | !wiphy->coalesce->n_patterns) && | |
609 | (!wiphy->coalesce->pattern_min_len || | |
610 | wiphy->coalesce->pattern_min_len > | |
611 | wiphy->coalesce->pattern_max_len))) | |
612 | return -EINVAL; | |
613 | ||
562a7480 JB |
614 | if (WARN_ON(wiphy->ap_sme_capa && |
615 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
616 | return -EINVAL; | |
617 | ||
ef15aac6 JB |
618 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
619 | return -EINVAL; | |
620 | ||
621 | if (WARN_ON(wiphy->addresses && | |
622 | !is_zero_ether_addr(wiphy->perm_addr) && | |
623 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
624 | ETH_ALEN))) | |
625 | return -EINVAL; | |
626 | ||
77765eaf VT |
627 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
628 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
629 | !rdev->ops->set_mac_acl))) | |
630 | return -EINVAL; | |
631 | ||
38de03d2 AS |
632 | /* assure only valid behaviours are flagged by driver |
633 | * hence subtract 2 as bit 0 is invalid. | |
634 | */ | |
635 | if (WARN_ON(wiphy->bss_select_support && | |
636 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
637 | return -EINVAL; | |
638 | ||
ef15aac6 JB |
639 | if (wiphy->addresses) |
640 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
641 | ||
f59ac048 LR |
642 | /* sanity check ifmodes */ |
643 | WARN_ON(!ifmodes); | |
2e161f78 | 644 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
645 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
646 | wiphy->interface_modes = ifmodes; | |
8318d78a | 647 | |
7527a782 JB |
648 | res = wiphy_verify_combinations(wiphy); |
649 | if (res) | |
650 | return res; | |
651 | ||
8318d78a | 652 | /* sanity check supported bands/channels */ |
57fbcce3 | 653 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
8318d78a JB |
654 | sband = wiphy->bands[band]; |
655 | if (!sband) | |
656 | continue; | |
657 | ||
658 | sband->band = band; | |
3a0c52a6 VK |
659 | if (WARN_ON(!sband->n_channels)) |
660 | return -EINVAL; | |
661 | /* | |
8047d261 | 662 | * on 60GHz band, there are no legacy rates, so |
3a0c52a6 VK |
663 | * n_bitrates is 0 |
664 | */ | |
57fbcce3 | 665 | if (WARN_ON(band != NL80211_BAND_60GHZ && |
3a0c52a6 | 666 | !sband->n_bitrates)) |
881d948c JB |
667 | return -EINVAL; |
668 | ||
40db6c77 AK |
669 | /* |
670 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
671 | * modify the sband's ht data even if the driver uses a | |
672 | * global structure for that. | |
673 | */ | |
674 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 675 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
676 | sband->ht_cap.ht_supported) { |
677 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
678 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
679 | } | |
680 | ||
881d948c JB |
681 | /* |
682 | * Since we use a u32 for rate bitmaps in | |
683 | * ieee80211_get_response_rate, we cannot | |
684 | * have more than 32 legacy rates. | |
685 | */ | |
686 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 687 | return -EINVAL; |
8318d78a JB |
688 | |
689 | for (i = 0; i < sband->n_channels; i++) { | |
690 | sband->channels[i].orig_flags = | |
691 | sband->channels[i].flags; | |
c4a9fafc | 692 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
693 | sband->channels[i].orig_mpwr = |
694 | sband->channels[i].max_power; | |
695 | sband->channels[i].band = band; | |
696 | } | |
697 | ||
698 | have_band = true; | |
699 | } | |
700 | ||
701 | if (!have_band) { | |
702 | WARN_ON(1); | |
703 | return -EINVAL; | |
704 | } | |
705 | ||
dfb89c56 | 706 | #ifdef CONFIG_PM |
964dc9e2 JB |
707 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
708 | (!rdev->wiphy.wowlan->pattern_min_len || | |
709 | rdev->wiphy.wowlan->pattern_min_len > | |
710 | rdev->wiphy.wowlan->pattern_max_len))) | |
711 | return -EINVAL; | |
dfb89c56 | 712 | #endif |
ff1b6e69 | 713 | |
8318d78a JB |
714 | /* check and set up bitrates */ |
715 | ieee80211_set_bitrate_flags(wiphy); | |
716 | ||
00c3a6ed JB |
717 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
718 | ||
aa5f66d5 | 719 | rtnl_lock(); |
79c97e97 | 720 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 721 | if (res) { |
aa5f66d5 | 722 | rtnl_unlock(); |
c3d34d5d JL |
723 | return res; |
724 | } | |
1f87f7d3 | 725 | |
2f0accc1 | 726 | /* set up regulatory info */ |
57b5ce07 | 727 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 728 | |
5f2aa25e | 729 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 730 | cfg80211_rdev_list_generation++; |
704232c2 JB |
731 | |
732 | /* add to debugfs */ | |
79c97e97 JB |
733 | rdev->wiphy.debugfsdir = |
734 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 735 | ieee80211_debugfs_dir); |
79c97e97 JB |
736 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
737 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 738 | |
a796dac9 TB |
739 | cfg80211_debugfs_rdev_add(rdev); |
740 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
741 | ||
a2f73b6c | 742 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
743 | struct regulatory_request request; |
744 | ||
745 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
746 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
747 | request.alpha2[0] = '9'; | |
748 | request.alpha2[1] = '9'; | |
749 | ||
750 | nl80211_send_reg_change_event(&request); | |
751 | } | |
752 | ||
ecb44335 SG |
753 | rdev->wiphy.registered = true; |
754 | rtnl_unlock(); | |
aa5f66d5 JB |
755 | |
756 | res = rfkill_register(rdev->rfkill); | |
757 | if (res) { | |
758 | rfkill_destroy(rdev->rfkill); | |
759 | rdev->rfkill = NULL; | |
760 | wiphy_unregister(&rdev->wiphy); | |
761 | return res; | |
762 | } | |
763 | ||
2f0accc1 | 764 | return 0; |
704232c2 JB |
765 | } |
766 | EXPORT_SYMBOL(wiphy_register); | |
767 | ||
1f87f7d3 JB |
768 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
769 | { | |
f26cbf40 | 770 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 771 | |
79c97e97 | 772 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 773 | return; |
79c97e97 JB |
774 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
775 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
776 | } |
777 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
778 | ||
779 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
780 | { | |
f26cbf40 | 781 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 782 | |
79c97e97 | 783 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
784 | } |
785 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
786 | ||
704232c2 JB |
787 | void wiphy_unregister(struct wiphy *wiphy) |
788 | { | |
f26cbf40 | 789 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 790 | |
ad002395 JB |
791 | wait_event(rdev->dev_wait, ({ |
792 | int __count; | |
5fe231e8 | 793 | rtnl_lock(); |
ad002395 | 794 | __count = rdev->opencount; |
5fe231e8 | 795 | rtnl_unlock(); |
c4f60846 | 796 | __count == 0; })); |
ad002395 | 797 | |
aa5f66d5 JB |
798 | if (rdev->rfkill) |
799 | rfkill_unregister(rdev->rfkill); | |
256c90de | 800 | |
5fe231e8 | 801 | rtnl_lock(); |
3bb20556 | 802 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
803 | rdev->wiphy.registered = false; |
804 | ||
53873f13 | 805 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
806 | |
807 | /* | |
808 | * First remove the hardware from everywhere, this makes | |
809 | * it impossible to find from userspace. | |
810 | */ | |
7bcfaf2f | 811 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
812 | list_del_rcu(&rdev->list); |
813 | synchronize_rcu(); | |
f16bfc1c | 814 | |
bfead080 LR |
815 | /* |
816 | * If this device got a regulatory hint tell core its | |
817 | * free to listen now to a new shiny device regulatory hint | |
818 | */ | |
819 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 820 | |
f5ea9120 | 821 | cfg80211_rdev_list_generation++; |
79c97e97 | 822 | device_del(&rdev->wiphy.dev); |
704232c2 | 823 | |
5fe231e8 | 824 | rtnl_unlock(); |
6682588a | 825 | |
36e6fea8 | 826 | flush_work(&rdev->scan_done_wk); |
6682588a | 827 | cancel_work_sync(&rdev->conn_work); |
6682588a | 828 | flush_work(&rdev->event_work); |
04f39047 | 829 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 830 | flush_work(&rdev->destroy_work); |
93a1e86c | 831 | flush_work(&rdev->sched_scan_stop_wk); |
33d8783c | 832 | flush_work(&rdev->mlme_unreg_wk); |
6d52563f | 833 | |
6abb9cb9 JB |
834 | #ifdef CONFIG_PM |
835 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 836 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 837 | #endif |
6d52563f | 838 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 839 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
840 | } |
841 | EXPORT_SYMBOL(wiphy_unregister); | |
842 | ||
79c97e97 | 843 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 844 | { |
2a519311 | 845 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 846 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 847 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
848 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
849 | list_del(®->list); | |
850 | kfree(reg); | |
851 | } | |
79c97e97 | 852 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 853 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 854 | kfree(rdev); |
704232c2 JB |
855 | } |
856 | ||
857 | void wiphy_free(struct wiphy *wiphy) | |
858 | { | |
859 | put_device(&wiphy->dev); | |
860 | } | |
861 | EXPORT_SYMBOL(wiphy_free); | |
862 | ||
1f87f7d3 JB |
863 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
864 | { | |
f26cbf40 | 865 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 866 | |
79c97e97 JB |
867 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
868 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
869 | } |
870 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
871 | ||
98104fde JB |
872 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
873 | { | |
f26cbf40 | 874 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
875 | |
876 | ASSERT_RTNL(); | |
877 | ||
878 | if (WARN_ON(wdev->netdev)) | |
879 | return; | |
880 | ||
98104fde JB |
881 | list_del_rcu(&wdev->list); |
882 | rdev->devlist_generation++; | |
883 | ||
884 | switch (wdev->iftype) { | |
885 | case NL80211_IFTYPE_P2P_DEVICE: | |
33d8783c | 886 | cfg80211_mlme_purge_registrations(wdev); |
f9f47529 | 887 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
888 | break; |
889 | default: | |
890 | WARN_ON_ONCE(1); | |
891 | break; | |
892 | } | |
98104fde JB |
893 | } |
894 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
895 | ||
f1e3d556 | 896 | static const struct device_type wiphy_type = { |
053a93dd MH |
897 | .name = "wlan", |
898 | }; | |
899 | ||
dbbae26a MK |
900 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
901 | enum nl80211_iftype iftype, int num) | |
902 | { | |
c5a7e582 | 903 | ASSERT_RTNL(); |
dbbae26a MK |
904 | |
905 | rdev->num_running_ifaces += num; | |
906 | if (iftype == NL80211_IFTYPE_MONITOR) | |
907 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
908 | } |
909 | ||
f04c2203 MK |
910 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
911 | struct wireless_dev *wdev) | |
81256969 SG |
912 | { |
913 | struct net_device *dev = wdev->netdev; | |
31a60ed1 | 914 | struct cfg80211_sched_scan_request *sched_scan_req; |
81256969 | 915 | |
24d584d7 | 916 | ASSERT_RTNL(); |
f04c2203 | 917 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 918 | |
81256969 SG |
919 | switch (wdev->iftype) { |
920 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 921 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
922 | break; |
923 | case NL80211_IFTYPE_P2P_CLIENT: | |
924 | case NL80211_IFTYPE_STATION: | |
31a60ed1 JR |
925 | sched_scan_req = rtnl_dereference(rdev->sched_scan_req); |
926 | if (sched_scan_req && dev == sched_scan_req->dev) | |
24d584d7 | 927 | __cfg80211_stop_sched_scan(rdev, false); |
81256969 | 928 | |
81256969 SG |
929 | #ifdef CONFIG_CFG80211_WEXT |
930 | kfree(wdev->wext.ie); | |
931 | wdev->wext.ie = NULL; | |
932 | wdev->wext.ie_len = 0; | |
933 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
934 | #endif | |
83739b03 JB |
935 | cfg80211_disconnect(rdev, dev, |
936 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
937 | break; |
938 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 939 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
940 | break; |
941 | case NL80211_IFTYPE_AP: | |
74418ede | 942 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 943 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 944 | break; |
6e0bd6c3 RL |
945 | case NL80211_IFTYPE_OCB: |
946 | __cfg80211_leave_ocb(rdev, dev); | |
947 | break; | |
de4fcbad JB |
948 | case NL80211_IFTYPE_WDS: |
949 | /* must be handled by mac80211/driver, has no APIs */ | |
950 | break; | |
951 | case NL80211_IFTYPE_P2P_DEVICE: | |
952 | /* cannot happen, has no netdev */ | |
953 | break; | |
954 | case NL80211_IFTYPE_AP_VLAN: | |
955 | case NL80211_IFTYPE_MONITOR: | |
956 | /* nothing to do */ | |
957 | break; | |
958 | case NL80211_IFTYPE_UNSPECIFIED: | |
959 | case NUM_NL80211_IFTYPES: | |
960 | /* invalid */ | |
81256969 SG |
961 | break; |
962 | } | |
81256969 SG |
963 | } |
964 | ||
f04c2203 MK |
965 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
966 | struct wireless_dev *wdev) | |
967 | { | |
968 | wdev_lock(wdev); | |
969 | __cfg80211_leave(rdev, wdev); | |
970 | wdev_unlock(wdev); | |
971 | } | |
972 | ||
973 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
974 | gfp_t gfp) | |
975 | { | |
976 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
977 | struct cfg80211_event *ev; | |
978 | unsigned long flags; | |
979 | ||
980 | trace_cfg80211_stop_iface(wiphy, wdev); | |
981 | ||
982 | ev = kzalloc(sizeof(*ev), gfp); | |
983 | if (!ev) | |
984 | return; | |
985 | ||
986 | ev->type = EVENT_STOPPED; | |
987 | ||
988 | spin_lock_irqsave(&wdev->event_lock, flags); | |
989 | list_add_tail(&ev->list, &wdev->event_list); | |
990 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
991 | queue_work(cfg80211_wq, &rdev->event_work); | |
992 | } | |
993 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
994 | ||
c4f60846 | 995 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 996 | unsigned long state, void *ptr) |
704232c2 | 997 | { |
351638e7 | 998 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 999 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1000 | struct cfg80211_registered_device *rdev; |
31a60ed1 | 1001 | struct cfg80211_sched_scan_request *sched_scan_req; |
704232c2 | 1002 | |
2a783c13 | 1003 | if (!wdev) |
1f87f7d3 | 1004 | return NOTIFY_DONE; |
704232c2 | 1005 | |
f26cbf40 | 1006 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1007 | |
2a783c13 | 1008 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1009 | |
704232c2 | 1010 | switch (state) { |
053a93dd MH |
1011 | case NETDEV_POST_INIT: |
1012 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
1013 | break; | |
704232c2 | 1014 | case NETDEV_REGISTER: |
0ff6ce7b JB |
1015 | /* |
1016 | * NB: cannot take rdev->mtx here because this may be | |
1017 | * called within code protected by it when interfaces | |
1018 | * are added with nl80211. | |
1019 | */ | |
667503dd JB |
1020 | mutex_init(&wdev->mtx); |
1021 | INIT_LIST_HEAD(&wdev->event_list); | |
1022 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
1023 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
1024 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 1025 | |
89a54e48 | 1026 | wdev->identifier = ++rdev->wdev_id; |
53873f13 | 1027 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); |
f5ea9120 | 1028 | rdev->devlist_generation++; |
463d0183 JB |
1029 | /* can only change netns with wiphy */ |
1030 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1031 | ||
704232c2 JB |
1032 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
1033 | "phy80211")) { | |
e9c0268f | 1034 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 1035 | } |
2a783c13 | 1036 | wdev->netdev = dev; |
3d23e349 | 1037 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
1038 | wdev->wext.default_key = -1; |
1039 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 1040 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
1041 | #endif |
1042 | ||
5be83de5 | 1043 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 1044 | wdev->ps = true; |
5be83de5 | 1045 | else |
ffb9eb3d | 1046 | wdev->ps = false; |
9043f3b8 JO |
1047 | /* allow mac80211 to determine the timeout */ |
1048 | wdev->ps_timeout = -1; | |
ffb9eb3d | 1049 | |
ad4bb6f8 | 1050 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 1051 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
1052 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
1053 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 1054 | break; |
04a773ad | 1055 | case NETDEV_GOING_DOWN: |
81256969 | 1056 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
1057 | break; |
1058 | case NETDEV_DOWN: | |
dbbae26a | 1059 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
1060 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
1061 | if (WARN_ON(!rdev->scan_req->notified)) | |
1062 | rdev->scan_req->aborted = true; | |
f9d15d16 | 1063 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1064 | } |
5fe231e8 | 1065 | |
31a60ed1 JR |
1066 | sched_scan_req = rtnl_dereference(rdev->sched_scan_req); |
1067 | if (WARN_ON(sched_scan_req && | |
1068 | sched_scan_req->dev == wdev->netdev)) { | |
5fe231e8 JB |
1069 | __cfg80211_stop_sched_scan(rdev, false); |
1070 | } | |
1071 | ||
1072 | rdev->opencount--; | |
1073 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
1074 | break; |
1075 | case NETDEV_UP: | |
4290cb4b | 1076 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1077 | wdev_lock(wdev); |
f2129354 | 1078 | switch (wdev->iftype) { |
29cbe68c | 1079 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1080 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1081 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1082 | break; |
f2129354 | 1083 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1084 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1085 | break; |
29cbe68c | 1086 | #endif |
c80d545d | 1087 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1088 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1089 | { |
1090 | /* backward compat code... */ | |
1091 | struct mesh_setup setup; | |
1092 | memcpy(&setup, &default_mesh_setup, | |
1093 | sizeof(setup)); | |
1094 | /* back compat only needed for mesh_id */ | |
1095 | setup.mesh_id = wdev->ssid; | |
1096 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1097 | if (wdev->mesh_id_up_len) | |
1098 | __cfg80211_join_mesh(rdev, dev, | |
1099 | &setup, | |
1100 | &default_mesh_config); | |
1101 | break; | |
1102 | } | |
1103 | #endif | |
f2129354 | 1104 | default: |
04a773ad | 1105 | break; |
f2129354 | 1106 | } |
667503dd | 1107 | wdev_unlock(wdev); |
ad002395 | 1108 | rdev->opencount++; |
bf6a0579 JO |
1109 | |
1110 | /* | |
1111 | * Configure power management to the driver here so that its | |
1112 | * correctly set also after interface type changes etc. | |
1113 | */ | |
5966f2dd EP |
1114 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1115 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 1116 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
1117 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
1118 | wdev->ps_timeout)) { | |
bf6a0579 JO |
1119 | /* assume this means it's off */ |
1120 | wdev->ps = false; | |
1121 | } | |
2a783c13 | 1122 | break; |
704232c2 | 1123 | case NETDEV_UNREGISTER: |
e40cbdac JB |
1124 | /* |
1125 | * It is possible to get NETDEV_UNREGISTER | |
1126 | * multiple times. To detect that, check | |
1127 | * that the interface is still on the list | |
1128 | * of registered interfaces, and only then | |
1129 | * remove and clean it up. | |
1130 | */ | |
2a783c13 | 1131 | if (!list_empty(&wdev->list)) { |
704232c2 | 1132 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 1133 | list_del_rcu(&wdev->list); |
f5ea9120 | 1134 | rdev->devlist_generation++; |
2e161f78 | 1135 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 1136 | #ifdef CONFIG_CFG80211_WEXT |
538c9eb8 | 1137 | kzfree(wdev->wext.keys); |
fffd0934 | 1138 | #endif |
e40cbdac | 1139 | } |
5f2aa25e JB |
1140 | /* |
1141 | * synchronise (so that we won't find this netdev | |
1142 | * from other code any more) and then clear the list | |
1143 | * head so that the above code can safely check for | |
1144 | * !list_empty() to avoid double-cleanup. | |
1145 | */ | |
1146 | synchronize_rcu(); | |
1147 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1148 | /* |
1149 | * Ensure that all events have been processed and | |
1150 | * freed. | |
1151 | */ | |
1152 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1153 | |
1154 | if (WARN_ON(wdev->current_bss)) { | |
1155 | cfg80211_unhold_bss(wdev->current_bss); | |
1156 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1157 | wdev->current_bss = NULL; | |
1158 | } | |
704232c2 | 1159 | break; |
1f87f7d3 | 1160 | case NETDEV_PRE_UP: |
0b20633d JB |
1161 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1162 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1163 | if (rfkill_blocked(rdev->rfkill)) |
1164 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1165 | break; |
6784c7db ZG |
1166 | default: |
1167 | return NOTIFY_DONE; | |
704232c2 JB |
1168 | } |
1169 | ||
cb150b9d JB |
1170 | wireless_nlevent_flush(); |
1171 | ||
6784c7db | 1172 | return NOTIFY_OK; |
704232c2 JB |
1173 | } |
1174 | ||
1175 | static struct notifier_block cfg80211_netdev_notifier = { | |
1176 | .notifier_call = cfg80211_netdev_notifier_call, | |
1177 | }; | |
1178 | ||
463d0183 JB |
1179 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1180 | { | |
1181 | struct cfg80211_registered_device *rdev; | |
1182 | ||
1183 | rtnl_lock(); | |
463d0183 JB |
1184 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1185 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1186 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1187 | } | |
463d0183 JB |
1188 | rtnl_unlock(); |
1189 | } | |
1190 | ||
1191 | static struct pernet_operations cfg80211_pernet_ops = { | |
1192 | .exit = cfg80211_pernet_exit, | |
1193 | }; | |
1194 | ||
1195 | static int __init cfg80211_init(void) | |
704232c2 | 1196 | { |
b2e1b302 LR |
1197 | int err; |
1198 | ||
463d0183 JB |
1199 | err = register_pernet_device(&cfg80211_pernet_ops); |
1200 | if (err) | |
1201 | goto out_fail_pernet; | |
1202 | ||
b2e1b302 | 1203 | err = wiphy_sysfs_init(); |
704232c2 JB |
1204 | if (err) |
1205 | goto out_fail_sysfs; | |
1206 | ||
1207 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1208 | if (err) | |
1209 | goto out_fail_notifier; | |
1210 | ||
55682965 JB |
1211 | err = nl80211_init(); |
1212 | if (err) | |
1213 | goto out_fail_nl80211; | |
1214 | ||
704232c2 JB |
1215 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1216 | ||
b2e1b302 LR |
1217 | err = regulatory_init(); |
1218 | if (err) | |
1219 | goto out_fail_reg; | |
1220 | ||
e60d7443 | 1221 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1222 | if (!cfg80211_wq) { |
1223 | err = -ENOMEM; | |
e60d7443 | 1224 | goto out_fail_wq; |
f00f188f | 1225 | } |
e60d7443 | 1226 | |
704232c2 JB |
1227 | return 0; |
1228 | ||
e60d7443 AB |
1229 | out_fail_wq: |
1230 | regulatory_exit(); | |
b2e1b302 LR |
1231 | out_fail_reg: |
1232 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1233 | nl80211_exit(); |
55682965 JB |
1234 | out_fail_nl80211: |
1235 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1236 | out_fail_notifier: |
1237 | wiphy_sysfs_exit(); | |
1238 | out_fail_sysfs: | |
463d0183 JB |
1239 | unregister_pernet_device(&cfg80211_pernet_ops); |
1240 | out_fail_pernet: | |
704232c2 JB |
1241 | return err; |
1242 | } | |
3a462465 | 1243 | subsys_initcall(cfg80211_init); |
704232c2 | 1244 | |
f884e387 | 1245 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1246 | { |
1247 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1248 | nl80211_exit(); |
704232c2 JB |
1249 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1250 | wiphy_sysfs_exit(); | |
b2e1b302 | 1251 | regulatory_exit(); |
463d0183 | 1252 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1253 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1254 | } |
1255 | module_exit(cfg80211_exit); |