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Commit | Line | Data |
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8318d78a JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
3b77d5ec | 5 | * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> |
2740f0cf | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
8318d78a | 7 | * |
3b77d5ec LR |
8 | * Permission to use, copy, modify, and/or distribute this software for any |
9 | * purpose with or without fee is hereby granted, provided that the above | |
10 | * copyright notice and this permission notice appear in all copies. | |
11 | * | |
12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
8318d78a JB |
19 | */ |
20 | ||
3b77d5ec | 21 | |
b2e1b302 LR |
22 | /** |
23 | * DOC: Wireless regulatory infrastructure | |
8318d78a JB |
24 | * |
25 | * The usual implementation is for a driver to read a device EEPROM to | |
26 | * determine which regulatory domain it should be operating under, then | |
27 | * looking up the allowable channels in a driver-local table and finally | |
28 | * registering those channels in the wiphy structure. | |
29 | * | |
b2e1b302 LR |
30 | * Another set of compliance enforcement is for drivers to use their |
31 | * own compliance limits which can be stored on the EEPROM. The host | |
32 | * driver or firmware may ensure these are used. | |
33 | * | |
34 | * In addition to all this we provide an extra layer of regulatory | |
35 | * conformance. For drivers which do not have any regulatory | |
36 | * information CRDA provides the complete regulatory solution. | |
37 | * For others it provides a community effort on further restrictions | |
38 | * to enhance compliance. | |
39 | * | |
40 | * Note: When number of rules --> infinity we will not be able to | |
41 | * index on alpha2 any more, instead we'll probably have to | |
42 | * rely on some SHA1 checksum of the regdomain for example. | |
43 | * | |
8318d78a | 44 | */ |
e9c0268f JP |
45 | |
46 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
47 | ||
8318d78a | 48 | #include <linux/kernel.h> |
bc3b2d7f | 49 | #include <linux/export.h> |
5a0e3ad6 | 50 | #include <linux/slab.h> |
b2e1b302 | 51 | #include <linux/list.h> |
c61029c7 | 52 | #include <linux/ctype.h> |
b2e1b302 LR |
53 | #include <linux/nl80211.h> |
54 | #include <linux/platform_device.h> | |
d9b93842 | 55 | #include <linux/moduleparam.h> |
b2e1b302 | 56 | #include <net/cfg80211.h> |
8318d78a | 57 | #include "core.h" |
b2e1b302 | 58 | #include "reg.h" |
ad932f04 | 59 | #include "rdev-ops.h" |
3b377ea9 | 60 | #include "regdb.h" |
73d54c9e | 61 | #include "nl80211.h" |
8318d78a | 62 | |
4113f751 | 63 | #ifdef CONFIG_CFG80211_REG_DEBUG |
12c5ffb5 JP |
64 | #define REG_DBG_PRINT(format, args...) \ |
65 | printk(KERN_DEBUG pr_fmt(format), ##args) | |
4113f751 | 66 | #else |
8271195e | 67 | #define REG_DBG_PRINT(args...) |
4113f751 LR |
68 | #endif |
69 | ||
ad932f04 AN |
70 | /* |
71 | * Grace period we give before making sure all current interfaces reside on | |
72 | * channels allowed by the current regulatory domain. | |
73 | */ | |
74 | #define REG_ENFORCE_GRACE_MS 60000 | |
75 | ||
52616f2b IP |
76 | /** |
77 | * enum reg_request_treatment - regulatory request treatment | |
78 | * | |
79 | * @REG_REQ_OK: continue processing the regulatory request | |
80 | * @REG_REQ_IGNORE: ignore the regulatory request | |
81 | * @REG_REQ_INTERSECT: the regulatory domain resulting from this request should | |
82 | * be intersected with the current one. | |
83 | * @REG_REQ_ALREADY_SET: the regulatory request will not change the current | |
84 | * regulatory settings, and no further processing is required. | |
52616f2b | 85 | */ |
2f92212b JB |
86 | enum reg_request_treatment { |
87 | REG_REQ_OK, | |
88 | REG_REQ_IGNORE, | |
89 | REG_REQ_INTERSECT, | |
90 | REG_REQ_ALREADY_SET, | |
91 | }; | |
92 | ||
a042994d LR |
93 | static struct regulatory_request core_request_world = { |
94 | .initiator = NL80211_REGDOM_SET_BY_CORE, | |
95 | .alpha2[0] = '0', | |
96 | .alpha2[1] = '0', | |
97 | .intersect = false, | |
98 | .processed = true, | |
99 | .country_ie_env = ENVIRON_ANY, | |
100 | }; | |
101 | ||
38fd2143 JB |
102 | /* |
103 | * Receipt of information from last regulatory request, | |
104 | * protected by RTNL (and can be accessed with RCU protection) | |
105 | */ | |
c492db37 | 106 | static struct regulatory_request __rcu *last_request = |
cec3f0ed | 107 | (void __force __rcu *)&core_request_world; |
734366de | 108 | |
b2e1b302 LR |
109 | /* To trigger userspace events */ |
110 | static struct platform_device *reg_pdev; | |
8318d78a | 111 | |
fb1fc7ad LR |
112 | /* |
113 | * Central wireless core regulatory domains, we only need two, | |
734366de | 114 | * the current one and a world regulatory domain in case we have no |
e8da2bb4 | 115 | * information to give us an alpha2. |
38fd2143 | 116 | * (protected by RTNL, can be read under RCU) |
fb1fc7ad | 117 | */ |
458f4f9e | 118 | const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
734366de | 119 | |
57b5ce07 LR |
120 | /* |
121 | * Number of devices that registered to the core | |
122 | * that support cellular base station regulatory hints | |
38fd2143 | 123 | * (protected by RTNL) |
57b5ce07 LR |
124 | */ |
125 | static int reg_num_devs_support_basehint; | |
126 | ||
52616f2b IP |
127 | /* |
128 | * State variable indicating if the platform on which the devices | |
129 | * are attached is operating in an indoor environment. The state variable | |
130 | * is relevant for all registered devices. | |
52616f2b IP |
131 | */ |
132 | static bool reg_is_indoor; | |
05050753 I |
133 | static spinlock_t reg_indoor_lock; |
134 | ||
135 | /* Used to track the userspace process controlling the indoor setting */ | |
136 | static u32 reg_is_indoor_portid; | |
52616f2b | 137 | |
b6863036 | 138 | static void restore_regulatory_settings(bool reset_user); |
c37722bd | 139 | |
458f4f9e JB |
140 | static const struct ieee80211_regdomain *get_cfg80211_regdom(void) |
141 | { | |
38fd2143 | 142 | return rtnl_dereference(cfg80211_regdomain); |
458f4f9e JB |
143 | } |
144 | ||
ad30ca2c | 145 | const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) |
458f4f9e | 146 | { |
38fd2143 | 147 | return rtnl_dereference(wiphy->regd); |
458f4f9e JB |
148 | } |
149 | ||
3ef121b5 LR |
150 | static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region) |
151 | { | |
152 | switch (dfs_region) { | |
153 | case NL80211_DFS_UNSET: | |
154 | return "unset"; | |
155 | case NL80211_DFS_FCC: | |
156 | return "FCC"; | |
157 | case NL80211_DFS_ETSI: | |
158 | return "ETSI"; | |
159 | case NL80211_DFS_JP: | |
160 | return "JP"; | |
161 | } | |
162 | return "Unknown"; | |
163 | } | |
164 | ||
6c474799 LR |
165 | enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy) |
166 | { | |
167 | const struct ieee80211_regdomain *regd = NULL; | |
168 | const struct ieee80211_regdomain *wiphy_regd = NULL; | |
169 | ||
170 | regd = get_cfg80211_regdom(); | |
171 | if (!wiphy) | |
172 | goto out; | |
173 | ||
174 | wiphy_regd = get_wiphy_regdom(wiphy); | |
175 | if (!wiphy_regd) | |
176 | goto out; | |
177 | ||
178 | if (wiphy_regd->dfs_region == regd->dfs_region) | |
179 | goto out; | |
180 | ||
181 | REG_DBG_PRINT("%s: device specific dfs_region " | |
182 | "(%s) disagrees with cfg80211's " | |
183 | "central dfs_region (%s)\n", | |
184 | dev_name(&wiphy->dev), | |
185 | reg_dfs_region_str(wiphy_regd->dfs_region), | |
186 | reg_dfs_region_str(regd->dfs_region)); | |
187 | ||
188 | out: | |
189 | return regd->dfs_region; | |
190 | } | |
191 | ||
458f4f9e JB |
192 | static void rcu_free_regdom(const struct ieee80211_regdomain *r) |
193 | { | |
194 | if (!r) | |
195 | return; | |
196 | kfree_rcu((struct ieee80211_regdomain *)r, rcu_head); | |
197 | } | |
198 | ||
c492db37 JB |
199 | static struct regulatory_request *get_last_request(void) |
200 | { | |
38fd2143 | 201 | return rcu_dereference_rtnl(last_request); |
c492db37 JB |
202 | } |
203 | ||
e38f8a7a | 204 | /* Used to queue up regulatory hints */ |
fe33eb39 LR |
205 | static LIST_HEAD(reg_requests_list); |
206 | static spinlock_t reg_requests_lock; | |
207 | ||
e38f8a7a LR |
208 | /* Used to queue up beacon hints for review */ |
209 | static LIST_HEAD(reg_pending_beacons); | |
210 | static spinlock_t reg_pending_beacons_lock; | |
211 | ||
212 | /* Used to keep track of processed beacon hints */ | |
213 | static LIST_HEAD(reg_beacon_list); | |
214 | ||
215 | struct reg_beacon { | |
216 | struct list_head list; | |
217 | struct ieee80211_channel chan; | |
218 | }; | |
219 | ||
ad932f04 AN |
220 | static void reg_check_chans_work(struct work_struct *work); |
221 | static DECLARE_DELAYED_WORK(reg_check_chans, reg_check_chans_work); | |
222 | ||
f333a7a2 LR |
223 | static void reg_todo(struct work_struct *work); |
224 | static DECLARE_WORK(reg_work, reg_todo); | |
225 | ||
734366de JB |
226 | /* We keep a static world regulatory domain in case of the absence of CRDA */ |
227 | static const struct ieee80211_regdomain world_regdom = { | |
28981e5e | 228 | .n_reg_rules = 8, |
734366de JB |
229 | .alpha2 = "00", |
230 | .reg_rules = { | |
68798a62 LR |
231 | /* IEEE 802.11b/g, channels 1..11 */ |
232 | REG_RULE(2412-10, 2462+10, 40, 6, 20, 0), | |
43c771a1 JB |
233 | /* IEEE 802.11b/g, channels 12..13. */ |
234 | REG_RULE(2467-10, 2472+10, 40, 6, 20, | |
8fe02e16 | 235 | NL80211_RRF_NO_IR), |
611b6a82 LR |
236 | /* IEEE 802.11 channel 14 - Only JP enables |
237 | * this and for 802.11b only */ | |
238 | REG_RULE(2484-10, 2484+10, 20, 6, 20, | |
8fe02e16 | 239 | NL80211_RRF_NO_IR | |
611b6a82 LR |
240 | NL80211_RRF_NO_OFDM), |
241 | /* IEEE 802.11a, channel 36..48 */ | |
131a19bc | 242 | REG_RULE(5180-10, 5240+10, 160, 6, 20, |
8fe02e16 | 243 | NL80211_RRF_NO_IR), |
3fc71f77 | 244 | |
131a19bc JB |
245 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
246 | REG_RULE(5260-10, 5320+10, 160, 6, 20, | |
8fe02e16 | 247 | NL80211_RRF_NO_IR | |
131a19bc JB |
248 | NL80211_RRF_DFS), |
249 | ||
250 | /* IEEE 802.11a, channel 100..144 - DFS required */ | |
251 | REG_RULE(5500-10, 5720+10, 160, 6, 20, | |
8fe02e16 | 252 | NL80211_RRF_NO_IR | |
131a19bc | 253 | NL80211_RRF_DFS), |
3fc71f77 LR |
254 | |
255 | /* IEEE 802.11a, channel 149..165 */ | |
8ab9d85c | 256 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
8fe02e16 | 257 | NL80211_RRF_NO_IR), |
90cdc6df | 258 | |
8047d261 | 259 | /* IEEE 802.11ad (60GHz), channels 1..3 */ |
90cdc6df | 260 | REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0), |
734366de JB |
261 | } |
262 | }; | |
263 | ||
38fd2143 | 264 | /* protected by RTNL */ |
a3d2eaf0 JB |
265 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
266 | &world_regdom; | |
734366de | 267 | |
6ee7d330 | 268 | static char *ieee80211_regdom = "00"; |
09d989d1 | 269 | static char user_alpha2[2]; |
6ee7d330 | 270 | |
734366de JB |
271 | module_param(ieee80211_regdom, charp, 0444); |
272 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); | |
273 | ||
c888393b | 274 | static void reg_free_request(struct regulatory_request *request) |
5ad6ef5e | 275 | { |
d34265a3 JB |
276 | if (request == &core_request_world) |
277 | return; | |
278 | ||
c888393b AN |
279 | if (request != get_last_request()) |
280 | kfree(request); | |
281 | } | |
282 | ||
283 | static void reg_free_last_request(void) | |
284 | { | |
285 | struct regulatory_request *lr = get_last_request(); | |
286 | ||
5ad6ef5e LR |
287 | if (lr != &core_request_world && lr) |
288 | kfree_rcu(lr, rcu_head); | |
289 | } | |
290 | ||
05f1a3ea LR |
291 | static void reg_update_last_request(struct regulatory_request *request) |
292 | { | |
255e25b0 LR |
293 | struct regulatory_request *lr; |
294 | ||
295 | lr = get_last_request(); | |
296 | if (lr == request) | |
297 | return; | |
298 | ||
c888393b | 299 | reg_free_last_request(); |
05f1a3ea LR |
300 | rcu_assign_pointer(last_request, request); |
301 | } | |
302 | ||
379b82f4 JB |
303 | static void reset_regdomains(bool full_reset, |
304 | const struct ieee80211_regdomain *new_regdom) | |
734366de | 305 | { |
458f4f9e JB |
306 | const struct ieee80211_regdomain *r; |
307 | ||
38fd2143 | 308 | ASSERT_RTNL(); |
e8da2bb4 | 309 | |
458f4f9e JB |
310 | r = get_cfg80211_regdom(); |
311 | ||
942b25cf | 312 | /* avoid freeing static information or freeing something twice */ |
458f4f9e JB |
313 | if (r == cfg80211_world_regdom) |
314 | r = NULL; | |
942b25cf JB |
315 | if (cfg80211_world_regdom == &world_regdom) |
316 | cfg80211_world_regdom = NULL; | |
458f4f9e JB |
317 | if (r == &world_regdom) |
318 | r = NULL; | |
942b25cf | 319 | |
458f4f9e JB |
320 | rcu_free_regdom(r); |
321 | rcu_free_regdom(cfg80211_world_regdom); | |
734366de | 322 | |
a3d2eaf0 | 323 | cfg80211_world_regdom = &world_regdom; |
458f4f9e | 324 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
a042994d LR |
325 | |
326 | if (!full_reset) | |
327 | return; | |
328 | ||
05f1a3ea | 329 | reg_update_last_request(&core_request_world); |
734366de JB |
330 | } |
331 | ||
fb1fc7ad LR |
332 | /* |
333 | * Dynamic world regulatory domain requested by the wireless | |
334 | * core upon initialization | |
335 | */ | |
a3d2eaf0 | 336 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
734366de | 337 | { |
c492db37 | 338 | struct regulatory_request *lr; |
734366de | 339 | |
c492db37 JB |
340 | lr = get_last_request(); |
341 | ||
342 | WARN_ON(!lr); | |
734366de | 343 | |
379b82f4 | 344 | reset_regdomains(false, rd); |
734366de JB |
345 | |
346 | cfg80211_world_regdom = rd; | |
734366de | 347 | } |
734366de | 348 | |
a3d2eaf0 | 349 | bool is_world_regdom(const char *alpha2) |
b2e1b302 LR |
350 | { |
351 | if (!alpha2) | |
352 | return false; | |
1a919318 | 353 | return alpha2[0] == '0' && alpha2[1] == '0'; |
b2e1b302 | 354 | } |
8318d78a | 355 | |
a3d2eaf0 | 356 | static bool is_alpha2_set(const char *alpha2) |
b2e1b302 LR |
357 | { |
358 | if (!alpha2) | |
359 | return false; | |
1a919318 | 360 | return alpha2[0] && alpha2[1]; |
b2e1b302 | 361 | } |
8318d78a | 362 | |
a3d2eaf0 | 363 | static bool is_unknown_alpha2(const char *alpha2) |
b2e1b302 LR |
364 | { |
365 | if (!alpha2) | |
366 | return false; | |
fb1fc7ad LR |
367 | /* |
368 | * Special case where regulatory domain was built by driver | |
369 | * but a specific alpha2 cannot be determined | |
370 | */ | |
1a919318 | 371 | return alpha2[0] == '9' && alpha2[1] == '9'; |
b2e1b302 | 372 | } |
8318d78a | 373 | |
3f2355cb LR |
374 | static bool is_intersected_alpha2(const char *alpha2) |
375 | { | |
376 | if (!alpha2) | |
377 | return false; | |
fb1fc7ad LR |
378 | /* |
379 | * Special case where regulatory domain is the | |
3f2355cb | 380 | * result of an intersection between two regulatory domain |
fb1fc7ad LR |
381 | * structures |
382 | */ | |
1a919318 | 383 | return alpha2[0] == '9' && alpha2[1] == '8'; |
3f2355cb LR |
384 | } |
385 | ||
a3d2eaf0 | 386 | static bool is_an_alpha2(const char *alpha2) |
b2e1b302 LR |
387 | { |
388 | if (!alpha2) | |
389 | return false; | |
1a919318 | 390 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
b2e1b302 | 391 | } |
8318d78a | 392 | |
a3d2eaf0 | 393 | static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y) |
b2e1b302 LR |
394 | { |
395 | if (!alpha2_x || !alpha2_y) | |
396 | return false; | |
1a919318 | 397 | return alpha2_x[0] == alpha2_y[0] && alpha2_x[1] == alpha2_y[1]; |
b2e1b302 LR |
398 | } |
399 | ||
69b1572b | 400 | static bool regdom_changes(const char *alpha2) |
b2e1b302 | 401 | { |
458f4f9e | 402 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
761cf7ec | 403 | |
458f4f9e | 404 | if (!r) |
b2e1b302 | 405 | return true; |
458f4f9e | 406 | return !alpha2_equal(r->alpha2, alpha2); |
b2e1b302 LR |
407 | } |
408 | ||
09d989d1 LR |
409 | /* |
410 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets | |
411 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER | |
412 | * has ever been issued. | |
413 | */ | |
414 | static bool is_user_regdom_saved(void) | |
415 | { | |
416 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') | |
417 | return false; | |
418 | ||
419 | /* This would indicate a mistake on the design */ | |
1a919318 | 420 | if (WARN(!is_world_regdom(user_alpha2) && !is_an_alpha2(user_alpha2), |
09d989d1 | 421 | "Unexpected user alpha2: %c%c\n", |
1a919318 | 422 | user_alpha2[0], user_alpha2[1])) |
09d989d1 LR |
423 | return false; |
424 | ||
425 | return true; | |
426 | } | |
427 | ||
e9763c3c JB |
428 | static const struct ieee80211_regdomain * |
429 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) | |
3b377ea9 JL |
430 | { |
431 | struct ieee80211_regdomain *regd; | |
e9763c3c | 432 | int size_of_regd; |
3b377ea9 JL |
433 | unsigned int i; |
434 | ||
82f20856 JB |
435 | size_of_regd = |
436 | sizeof(struct ieee80211_regdomain) + | |
437 | src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); | |
3b377ea9 JL |
438 | |
439 | regd = kzalloc(size_of_regd, GFP_KERNEL); | |
440 | if (!regd) | |
e9763c3c | 441 | return ERR_PTR(-ENOMEM); |
3b377ea9 JL |
442 | |
443 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); | |
444 | ||
445 | for (i = 0; i < src_regd->n_reg_rules; i++) | |
446 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], | |
e9763c3c | 447 | sizeof(struct ieee80211_reg_rule)); |
3b377ea9 | 448 | |
e9763c3c | 449 | return regd; |
3b377ea9 JL |
450 | } |
451 | ||
452 | #ifdef CONFIG_CFG80211_INTERNAL_REGDB | |
c7d319e5 | 453 | struct reg_regdb_apply_request { |
3b377ea9 | 454 | struct list_head list; |
c7d319e5 | 455 | const struct ieee80211_regdomain *regdom; |
3b377ea9 JL |
456 | }; |
457 | ||
c7d319e5 JB |
458 | static LIST_HEAD(reg_regdb_apply_list); |
459 | static DEFINE_MUTEX(reg_regdb_apply_mutex); | |
3b377ea9 | 460 | |
c7d319e5 | 461 | static void reg_regdb_apply(struct work_struct *work) |
3b377ea9 | 462 | { |
c7d319e5 | 463 | struct reg_regdb_apply_request *request; |
a85d0d7f | 464 | |
5fe231e8 | 465 | rtnl_lock(); |
3b377ea9 | 466 | |
c7d319e5 JB |
467 | mutex_lock(®_regdb_apply_mutex); |
468 | while (!list_empty(®_regdb_apply_list)) { | |
469 | request = list_first_entry(®_regdb_apply_list, | |
470 | struct reg_regdb_apply_request, | |
3b377ea9 JL |
471 | list); |
472 | list_del(&request->list); | |
473 | ||
c7d319e5 | 474 | set_regdom(request->regdom, REGD_SOURCE_INTERNAL_DB); |
3b377ea9 JL |
475 | kfree(request); |
476 | } | |
c7d319e5 | 477 | mutex_unlock(®_regdb_apply_mutex); |
a85d0d7f | 478 | |
5fe231e8 | 479 | rtnl_unlock(); |
3b377ea9 JL |
480 | } |
481 | ||
c7d319e5 | 482 | static DECLARE_WORK(reg_regdb_work, reg_regdb_apply); |
3b377ea9 | 483 | |
fd453d3c | 484 | static int reg_query_builtin(const char *alpha2) |
3b377ea9 | 485 | { |
c7d319e5 JB |
486 | const struct ieee80211_regdomain *regdom = NULL; |
487 | struct reg_regdb_apply_request *request; | |
488 | unsigned int i; | |
489 | ||
490 | for (i = 0; i < reg_regdb_size; i++) { | |
491 | if (alpha2_equal(alpha2, reg_regdb[i]->alpha2)) { | |
492 | regdom = reg_regdb[i]; | |
493 | break; | |
494 | } | |
495 | } | |
496 | ||
497 | if (!regdom) | |
498 | return -ENODATA; | |
3b377ea9 | 499 | |
c7d319e5 | 500 | request = kzalloc(sizeof(struct reg_regdb_apply_request), GFP_KERNEL); |
3b377ea9 | 501 | if (!request) |
c7d319e5 | 502 | return -ENOMEM; |
3b377ea9 | 503 | |
c7d319e5 JB |
504 | request->regdom = reg_copy_regd(regdom); |
505 | if (IS_ERR_OR_NULL(request->regdom)) { | |
506 | kfree(request); | |
507 | return -ENOMEM; | |
508 | } | |
3b377ea9 | 509 | |
c7d319e5 JB |
510 | mutex_lock(®_regdb_apply_mutex); |
511 | list_add_tail(&request->list, ®_regdb_apply_list); | |
512 | mutex_unlock(®_regdb_apply_mutex); | |
3b377ea9 JL |
513 | |
514 | schedule_work(®_regdb_work); | |
c7d319e5 JB |
515 | |
516 | return 0; | |
3b377ea9 | 517 | } |
80007efe LR |
518 | |
519 | /* Feel free to add any other sanity checks here */ | |
520 | static void reg_regdb_size_check(void) | |
521 | { | |
522 | /* We should ideally BUILD_BUG_ON() but then random builds would fail */ | |
523 | WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it..."); | |
524 | } | |
3b377ea9 | 525 | #else |
80007efe | 526 | static inline void reg_regdb_size_check(void) {} |
fd453d3c | 527 | static inline int reg_query_builtin(const char *alpha2) |
c7d319e5 JB |
528 | { |
529 | return -ENODATA; | |
530 | } | |
3b377ea9 JL |
531 | #endif /* CONFIG_CFG80211_INTERNAL_REGDB */ |
532 | ||
b6863036 JB |
533 | #ifdef CONFIG_CFG80211_CRDA_SUPPORT |
534 | /* Max number of consecutive attempts to communicate with CRDA */ | |
535 | #define REG_MAX_CRDA_TIMEOUTS 10 | |
536 | ||
537 | static u32 reg_crda_timeouts; | |
538 | ||
539 | static void crda_timeout_work(struct work_struct *work); | |
540 | static DECLARE_DELAYED_WORK(crda_timeout, crda_timeout_work); | |
541 | ||
542 | static void crda_timeout_work(struct work_struct *work) | |
543 | { | |
544 | REG_DBG_PRINT("Timeout while waiting for CRDA to reply, restoring regulatory settings\n"); | |
545 | rtnl_lock(); | |
546 | reg_crda_timeouts++; | |
547 | restore_regulatory_settings(true); | |
548 | rtnl_unlock(); | |
549 | } | |
550 | ||
551 | static void cancel_crda_timeout(void) | |
552 | { | |
553 | cancel_delayed_work(&crda_timeout); | |
554 | } | |
555 | ||
556 | static void cancel_crda_timeout_sync(void) | |
557 | { | |
558 | cancel_delayed_work_sync(&crda_timeout); | |
559 | } | |
560 | ||
561 | static void reset_crda_timeouts(void) | |
562 | { | |
563 | reg_crda_timeouts = 0; | |
564 | } | |
565 | ||
fb1fc7ad LR |
566 | /* |
567 | * This lets us keep regulatory code which is updated on a regulatory | |
1226d258 | 568 | * basis in userspace. |
fb1fc7ad | 569 | */ |
b2e1b302 LR |
570 | static int call_crda(const char *alpha2) |
571 | { | |
1226d258 JB |
572 | char country[12]; |
573 | char *env[] = { country, NULL }; | |
c7d319e5 | 574 | int ret; |
1226d258 JB |
575 | |
576 | snprintf(country, sizeof(country), "COUNTRY=%c%c", | |
577 | alpha2[0], alpha2[1]); | |
578 | ||
c37722bd | 579 | if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) { |
042ab5fc | 580 | pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n"); |
c37722bd I |
581 | return -EINVAL; |
582 | } | |
583 | ||
b2e1b302 | 584 | if (!is_world_regdom((char *) alpha2)) |
042ab5fc | 585 | pr_debug("Calling CRDA for country: %c%c\n", |
b2e1b302 LR |
586 | alpha2[0], alpha2[1]); |
587 | else | |
042ab5fc | 588 | pr_debug("Calling CRDA to update world regulatory domain\n"); |
b2e1b302 | 589 | |
c7d319e5 JB |
590 | ret = kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, env); |
591 | if (ret) | |
592 | return ret; | |
593 | ||
594 | queue_delayed_work(system_power_efficient_wq, | |
b6863036 | 595 | &crda_timeout, msecs_to_jiffies(3142)); |
c7d319e5 | 596 | return 0; |
b2e1b302 | 597 | } |
b6863036 JB |
598 | #else |
599 | static inline void cancel_crda_timeout(void) {} | |
600 | static inline void cancel_crda_timeout_sync(void) {} | |
601 | static inline void reset_crda_timeouts(void) {} | |
602 | static inline int call_crda(const char *alpha2) | |
603 | { | |
604 | return -ENODATA; | |
605 | } | |
606 | #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ | |
b2e1b302 | 607 | |
cecbb069 | 608 | static bool reg_query_database(struct regulatory_request *request) |
fe6631ff | 609 | { |
c7d319e5 | 610 | /* query internal regulatory database (if it exists) */ |
fd453d3c | 611 | if (reg_query_builtin(request->alpha2) == 0) |
c7d319e5 | 612 | return true; |
eeca9fce | 613 | |
c7d319e5 JB |
614 | if (call_crda(request->alpha2) == 0) |
615 | return true; | |
616 | ||
617 | return false; | |
fe6631ff LR |
618 | } |
619 | ||
e438768f | 620 | bool reg_is_valid_request(const char *alpha2) |
b2e1b302 | 621 | { |
c492db37 | 622 | struct regulatory_request *lr = get_last_request(); |
61405e97 | 623 | |
c492db37 | 624 | if (!lr || lr->processed) |
f6037d09 JB |
625 | return false; |
626 | ||
c492db37 | 627 | return alpha2_equal(lr->alpha2, alpha2); |
b2e1b302 | 628 | } |
8318d78a | 629 | |
e3961af1 JD |
630 | static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy) |
631 | { | |
632 | struct regulatory_request *lr = get_last_request(); | |
633 | ||
634 | /* | |
635 | * Follow the driver's regulatory domain, if present, unless a country | |
636 | * IE has been processed or a user wants to help complaince further | |
637 | */ | |
638 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
639 | lr->initiator != NL80211_REGDOM_SET_BY_USER && | |
640 | wiphy->regd) | |
641 | return get_wiphy_regdom(wiphy); | |
642 | ||
643 | return get_cfg80211_regdom(); | |
644 | } | |
645 | ||
a6d4a534 AN |
646 | static unsigned int |
647 | reg_get_max_bandwidth_from_range(const struct ieee80211_regdomain *rd, | |
648 | const struct ieee80211_reg_rule *rule) | |
97524820 JD |
649 | { |
650 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; | |
651 | const struct ieee80211_freq_range *freq_range_tmp; | |
652 | const struct ieee80211_reg_rule *tmp; | |
653 | u32 start_freq, end_freq, idx, no; | |
654 | ||
655 | for (idx = 0; idx < rd->n_reg_rules; idx++) | |
656 | if (rule == &rd->reg_rules[idx]) | |
657 | break; | |
658 | ||
659 | if (idx == rd->n_reg_rules) | |
660 | return 0; | |
661 | ||
662 | /* get start_freq */ | |
663 | no = idx; | |
664 | ||
665 | while (no) { | |
666 | tmp = &rd->reg_rules[--no]; | |
667 | freq_range_tmp = &tmp->freq_range; | |
668 | ||
669 | if (freq_range_tmp->end_freq_khz < freq_range->start_freq_khz) | |
670 | break; | |
671 | ||
97524820 JD |
672 | freq_range = freq_range_tmp; |
673 | } | |
674 | ||
675 | start_freq = freq_range->start_freq_khz; | |
676 | ||
677 | /* get end_freq */ | |
678 | freq_range = &rule->freq_range; | |
679 | no = idx; | |
680 | ||
681 | while (no < rd->n_reg_rules - 1) { | |
682 | tmp = &rd->reg_rules[++no]; | |
683 | freq_range_tmp = &tmp->freq_range; | |
684 | ||
685 | if (freq_range_tmp->start_freq_khz > freq_range->end_freq_khz) | |
686 | break; | |
687 | ||
97524820 JD |
688 | freq_range = freq_range_tmp; |
689 | } | |
690 | ||
691 | end_freq = freq_range->end_freq_khz; | |
692 | ||
693 | return end_freq - start_freq; | |
694 | } | |
695 | ||
a6d4a534 AN |
696 | unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, |
697 | const struct ieee80211_reg_rule *rule) | |
698 | { | |
699 | unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule); | |
700 | ||
701 | if (rule->flags & NL80211_RRF_NO_160MHZ) | |
702 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80)); | |
703 | if (rule->flags & NL80211_RRF_NO_80MHZ) | |
704 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(40)); | |
705 | ||
706 | /* | |
707 | * HT40+/HT40- limits are handled per-channel. Only limit BW if both | |
708 | * are not allowed. | |
709 | */ | |
710 | if (rule->flags & NL80211_RRF_NO_HT40MINUS && | |
711 | rule->flags & NL80211_RRF_NO_HT40PLUS) | |
712 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(20)); | |
713 | ||
714 | return bw; | |
715 | } | |
716 | ||
b2e1b302 | 717 | /* Sanity check on a regulatory rule */ |
a3d2eaf0 | 718 | static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule) |
8318d78a | 719 | { |
a3d2eaf0 | 720 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
b2e1b302 LR |
721 | u32 freq_diff; |
722 | ||
91e99004 | 723 | if (freq_range->start_freq_khz <= 0 || freq_range->end_freq_khz <= 0) |
b2e1b302 LR |
724 | return false; |
725 | ||
726 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) | |
727 | return false; | |
728 | ||
729 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; | |
730 | ||
bd05f28e | 731 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
1a919318 | 732 | freq_range->max_bandwidth_khz > freq_diff) |
b2e1b302 LR |
733 | return false; |
734 | ||
735 | return true; | |
736 | } | |
737 | ||
a3d2eaf0 | 738 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
b2e1b302 | 739 | { |
a3d2eaf0 | 740 | const struct ieee80211_reg_rule *reg_rule = NULL; |
b2e1b302 | 741 | unsigned int i; |
8318d78a | 742 | |
b2e1b302 LR |
743 | if (!rd->n_reg_rules) |
744 | return false; | |
8318d78a | 745 | |
88dc1c3f LR |
746 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
747 | return false; | |
748 | ||
b2e1b302 LR |
749 | for (i = 0; i < rd->n_reg_rules; i++) { |
750 | reg_rule = &rd->reg_rules[i]; | |
751 | if (!is_valid_reg_rule(reg_rule)) | |
752 | return false; | |
753 | } | |
754 | ||
755 | return true; | |
8318d78a JB |
756 | } |
757 | ||
038659e7 | 758 | static bool reg_does_bw_fit(const struct ieee80211_freq_range *freq_range, |
fe7ef5e9 | 759 | u32 center_freq_khz, u32 bw_khz) |
b2e1b302 | 760 | { |
038659e7 LR |
761 | u32 start_freq_khz, end_freq_khz; |
762 | ||
763 | start_freq_khz = center_freq_khz - (bw_khz/2); | |
764 | end_freq_khz = center_freq_khz + (bw_khz/2); | |
765 | ||
766 | if (start_freq_khz >= freq_range->start_freq_khz && | |
767 | end_freq_khz <= freq_range->end_freq_khz) | |
768 | return true; | |
769 | ||
770 | return false; | |
b2e1b302 | 771 | } |
8318d78a | 772 | |
0c7dc45d LR |
773 | /** |
774 | * freq_in_rule_band - tells us if a frequency is in a frequency band | |
775 | * @freq_range: frequency rule we want to query | |
776 | * @freq_khz: frequency we are inquiring about | |
777 | * | |
778 | * This lets us know if a specific frequency rule is or is not relevant to | |
779 | * a specific frequency's band. Bands are device specific and artificial | |
64629b9d VK |
780 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
781 | * however it is safe for now to assume that a frequency rule should not be | |
782 | * part of a frequency's band if the start freq or end freq are off by more | |
783 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the | |
784 | * 60 GHz band. | |
0c7dc45d LR |
785 | * This resolution can be lowered and should be considered as we add |
786 | * regulatory rule support for other "bands". | |
787 | **/ | |
788 | static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range, | |
1a919318 | 789 | u32 freq_khz) |
0c7dc45d LR |
790 | { |
791 | #define ONE_GHZ_IN_KHZ 1000000 | |
64629b9d VK |
792 | /* |
793 | * From 802.11ad: directional multi-gigabit (DMG): | |
794 | * Pertaining to operation in a frequency band containing a channel | |
795 | * with the Channel starting frequency above 45 GHz. | |
796 | */ | |
797 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? | |
798 | 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; | |
799 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) | |
0c7dc45d | 800 | return true; |
64629b9d | 801 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
0c7dc45d LR |
802 | return true; |
803 | return false; | |
804 | #undef ONE_GHZ_IN_KHZ | |
805 | } | |
806 | ||
adbfb058 LR |
807 | /* |
808 | * Later on we can perhaps use the more restrictive DFS | |
809 | * region but we don't have information for that yet so | |
810 | * for now simply disallow conflicts. | |
811 | */ | |
812 | static enum nl80211_dfs_regions | |
813 | reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1, | |
814 | const enum nl80211_dfs_regions dfs_region2) | |
815 | { | |
816 | if (dfs_region1 != dfs_region2) | |
817 | return NL80211_DFS_UNSET; | |
818 | return dfs_region1; | |
819 | } | |
820 | ||
fb1fc7ad LR |
821 | /* |
822 | * Helper for regdom_intersect(), this does the real | |
823 | * mathematical intersection fun | |
824 | */ | |
97524820 JD |
825 | static int reg_rules_intersect(const struct ieee80211_regdomain *rd1, |
826 | const struct ieee80211_regdomain *rd2, | |
827 | const struct ieee80211_reg_rule *rule1, | |
1a919318 JB |
828 | const struct ieee80211_reg_rule *rule2, |
829 | struct ieee80211_reg_rule *intersected_rule) | |
9c96477d LR |
830 | { |
831 | const struct ieee80211_freq_range *freq_range1, *freq_range2; | |
832 | struct ieee80211_freq_range *freq_range; | |
833 | const struct ieee80211_power_rule *power_rule1, *power_rule2; | |
834 | struct ieee80211_power_rule *power_rule; | |
97524820 | 835 | u32 freq_diff, max_bandwidth1, max_bandwidth2; |
9c96477d LR |
836 | |
837 | freq_range1 = &rule1->freq_range; | |
838 | freq_range2 = &rule2->freq_range; | |
839 | freq_range = &intersected_rule->freq_range; | |
840 | ||
841 | power_rule1 = &rule1->power_rule; | |
842 | power_rule2 = &rule2->power_rule; | |
843 | power_rule = &intersected_rule->power_rule; | |
844 | ||
845 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, | |
1a919318 | 846 | freq_range2->start_freq_khz); |
9c96477d | 847 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
1a919318 | 848 | freq_range2->end_freq_khz); |
97524820 JD |
849 | |
850 | max_bandwidth1 = freq_range1->max_bandwidth_khz; | |
851 | max_bandwidth2 = freq_range2->max_bandwidth_khz; | |
852 | ||
b0dfd2ea JD |
853 | if (rule1->flags & NL80211_RRF_AUTO_BW) |
854 | max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1); | |
855 | if (rule2->flags & NL80211_RRF_AUTO_BW) | |
856 | max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2); | |
97524820 JD |
857 | |
858 | freq_range->max_bandwidth_khz = min(max_bandwidth1, max_bandwidth2); | |
9c96477d | 859 | |
b0dfd2ea JD |
860 | intersected_rule->flags = rule1->flags | rule2->flags; |
861 | ||
862 | /* | |
863 | * In case NL80211_RRF_AUTO_BW requested for both rules | |
864 | * set AUTO_BW in intersected rule also. Next we will | |
865 | * calculate BW correctly in handle_channel function. | |
866 | * In other case remove AUTO_BW flag while we calculate | |
867 | * maximum bandwidth correctly and auto calculation is | |
868 | * not required. | |
869 | */ | |
870 | if ((rule1->flags & NL80211_RRF_AUTO_BW) && | |
871 | (rule2->flags & NL80211_RRF_AUTO_BW)) | |
872 | intersected_rule->flags |= NL80211_RRF_AUTO_BW; | |
873 | else | |
874 | intersected_rule->flags &= ~NL80211_RRF_AUTO_BW; | |
875 | ||
9c96477d LR |
876 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
877 | if (freq_range->max_bandwidth_khz > freq_diff) | |
878 | freq_range->max_bandwidth_khz = freq_diff; | |
879 | ||
880 | power_rule->max_eirp = min(power_rule1->max_eirp, | |
881 | power_rule2->max_eirp); | |
882 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, | |
883 | power_rule2->max_antenna_gain); | |
884 | ||
089027e5 JD |
885 | intersected_rule->dfs_cac_ms = max(rule1->dfs_cac_ms, |
886 | rule2->dfs_cac_ms); | |
887 | ||
9c96477d LR |
888 | if (!is_valid_reg_rule(intersected_rule)) |
889 | return -EINVAL; | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
a62a1aed EP |
894 | /* check whether old rule contains new rule */ |
895 | static bool rule_contains(struct ieee80211_reg_rule *r1, | |
896 | struct ieee80211_reg_rule *r2) | |
897 | { | |
898 | /* for simplicity, currently consider only same flags */ | |
899 | if (r1->flags != r2->flags) | |
900 | return false; | |
901 | ||
902 | /* verify r1 is more restrictive */ | |
903 | if ((r1->power_rule.max_antenna_gain > | |
904 | r2->power_rule.max_antenna_gain) || | |
905 | r1->power_rule.max_eirp > r2->power_rule.max_eirp) | |
906 | return false; | |
907 | ||
908 | /* make sure r2's range is contained within r1 */ | |
909 | if (r1->freq_range.start_freq_khz > r2->freq_range.start_freq_khz || | |
910 | r1->freq_range.end_freq_khz < r2->freq_range.end_freq_khz) | |
911 | return false; | |
912 | ||
913 | /* and finally verify that r1.max_bw >= r2.max_bw */ | |
914 | if (r1->freq_range.max_bandwidth_khz < | |
915 | r2->freq_range.max_bandwidth_khz) | |
916 | return false; | |
917 | ||
918 | return true; | |
919 | } | |
920 | ||
921 | /* add or extend current rules. do nothing if rule is already contained */ | |
922 | static void add_rule(struct ieee80211_reg_rule *rule, | |
923 | struct ieee80211_reg_rule *reg_rules, u32 *n_rules) | |
924 | { | |
925 | struct ieee80211_reg_rule *tmp_rule; | |
926 | int i; | |
927 | ||
928 | for (i = 0; i < *n_rules; i++) { | |
929 | tmp_rule = ®_rules[i]; | |
930 | /* rule is already contained - do nothing */ | |
931 | if (rule_contains(tmp_rule, rule)) | |
932 | return; | |
933 | ||
934 | /* extend rule if possible */ | |
935 | if (rule_contains(rule, tmp_rule)) { | |
936 | memcpy(tmp_rule, rule, sizeof(*rule)); | |
937 | return; | |
938 | } | |
939 | } | |
940 | ||
941 | memcpy(®_rules[*n_rules], rule, sizeof(*rule)); | |
942 | (*n_rules)++; | |
943 | } | |
944 | ||
9c96477d LR |
945 | /** |
946 | * regdom_intersect - do the intersection between two regulatory domains | |
947 | * @rd1: first regulatory domain | |
948 | * @rd2: second regulatory domain | |
949 | * | |
950 | * Use this function to get the intersection between two regulatory domains. | |
951 | * Once completed we will mark the alpha2 for the rd as intersected, "98", | |
952 | * as no one single alpha2 can represent this regulatory domain. | |
953 | * | |
954 | * Returns a pointer to the regulatory domain structure which will hold the | |
955 | * resulting intersection of rules between rd1 and rd2. We will | |
956 | * kzalloc() this structure for you. | |
957 | */ | |
1a919318 JB |
958 | static struct ieee80211_regdomain * |
959 | regdom_intersect(const struct ieee80211_regdomain *rd1, | |
960 | const struct ieee80211_regdomain *rd2) | |
9c96477d LR |
961 | { |
962 | int r, size_of_regd; | |
963 | unsigned int x, y; | |
a62a1aed | 964 | unsigned int num_rules = 0; |
9c96477d | 965 | const struct ieee80211_reg_rule *rule1, *rule2; |
a62a1aed | 966 | struct ieee80211_reg_rule intersected_rule; |
9c96477d | 967 | struct ieee80211_regdomain *rd; |
9c96477d LR |
968 | |
969 | if (!rd1 || !rd2) | |
970 | return NULL; | |
971 | ||
fb1fc7ad LR |
972 | /* |
973 | * First we get a count of the rules we'll need, then we actually | |
9c96477d LR |
974 | * build them. This is to so we can malloc() and free() a |
975 | * regdomain once. The reason we use reg_rules_intersect() here | |
976 | * is it will return -EINVAL if the rule computed makes no sense. | |
fb1fc7ad LR |
977 | * All rules that do check out OK are valid. |
978 | */ | |
9c96477d LR |
979 | |
980 | for (x = 0; x < rd1->n_reg_rules; x++) { | |
981 | rule1 = &rd1->reg_rules[x]; | |
982 | for (y = 0; y < rd2->n_reg_rules; y++) { | |
983 | rule2 = &rd2->reg_rules[y]; | |
97524820 | 984 | if (!reg_rules_intersect(rd1, rd2, rule1, rule2, |
a62a1aed | 985 | &intersected_rule)) |
9c96477d | 986 | num_rules++; |
9c96477d LR |
987 | } |
988 | } | |
989 | ||
990 | if (!num_rules) | |
991 | return NULL; | |
992 | ||
993 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
82f20856 | 994 | num_rules * sizeof(struct ieee80211_reg_rule); |
9c96477d LR |
995 | |
996 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
997 | if (!rd) | |
998 | return NULL; | |
999 | ||
a62a1aed | 1000 | for (x = 0; x < rd1->n_reg_rules; x++) { |
9c96477d | 1001 | rule1 = &rd1->reg_rules[x]; |
a62a1aed | 1002 | for (y = 0; y < rd2->n_reg_rules; y++) { |
9c96477d | 1003 | rule2 = &rd2->reg_rules[y]; |
97524820 | 1004 | r = reg_rules_intersect(rd1, rd2, rule1, rule2, |
a62a1aed | 1005 | &intersected_rule); |
fb1fc7ad LR |
1006 | /* |
1007 | * No need to memset here the intersected rule here as | |
1008 | * we're not using the stack anymore | |
1009 | */ | |
9c96477d LR |
1010 | if (r) |
1011 | continue; | |
9c96477d | 1012 | |
a62a1aed EP |
1013 | add_rule(&intersected_rule, rd->reg_rules, |
1014 | &rd->n_reg_rules); | |
1015 | } | |
9c96477d LR |
1016 | } |
1017 | ||
9c96477d LR |
1018 | rd->alpha2[0] = '9'; |
1019 | rd->alpha2[1] = '8'; | |
adbfb058 LR |
1020 | rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region, |
1021 | rd2->dfs_region); | |
9c96477d LR |
1022 | |
1023 | return rd; | |
1024 | } | |
1025 | ||
fb1fc7ad LR |
1026 | /* |
1027 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may | |
1028 | * want to just have the channel structure use these | |
1029 | */ | |
b2e1b302 LR |
1030 | static u32 map_regdom_flags(u32 rd_flags) |
1031 | { | |
1032 | u32 channel_flags = 0; | |
8fe02e16 LR |
1033 | if (rd_flags & NL80211_RRF_NO_IR_ALL) |
1034 | channel_flags |= IEEE80211_CHAN_NO_IR; | |
b2e1b302 LR |
1035 | if (rd_flags & NL80211_RRF_DFS) |
1036 | channel_flags |= IEEE80211_CHAN_RADAR; | |
03f6b084 SF |
1037 | if (rd_flags & NL80211_RRF_NO_OFDM) |
1038 | channel_flags |= IEEE80211_CHAN_NO_OFDM; | |
570dbde1 DS |
1039 | if (rd_flags & NL80211_RRF_NO_OUTDOOR) |
1040 | channel_flags |= IEEE80211_CHAN_INDOOR_ONLY; | |
06f207fc AN |
1041 | if (rd_flags & NL80211_RRF_IR_CONCURRENT) |
1042 | channel_flags |= IEEE80211_CHAN_IR_CONCURRENT; | |
a6d4a534 AN |
1043 | if (rd_flags & NL80211_RRF_NO_HT40MINUS) |
1044 | channel_flags |= IEEE80211_CHAN_NO_HT40MINUS; | |
1045 | if (rd_flags & NL80211_RRF_NO_HT40PLUS) | |
1046 | channel_flags |= IEEE80211_CHAN_NO_HT40PLUS; | |
1047 | if (rd_flags & NL80211_RRF_NO_80MHZ) | |
1048 | channel_flags |= IEEE80211_CHAN_NO_80MHZ; | |
1049 | if (rd_flags & NL80211_RRF_NO_160MHZ) | |
1050 | channel_flags |= IEEE80211_CHAN_NO_160MHZ; | |
b2e1b302 LR |
1051 | return channel_flags; |
1052 | } | |
1053 | ||
361c9c8b JB |
1054 | static const struct ieee80211_reg_rule * |
1055 | freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, | |
4edd5698 | 1056 | const struct ieee80211_regdomain *regd, u32 bw) |
8318d78a JB |
1057 | { |
1058 | int i; | |
0c7dc45d | 1059 | bool band_rule_found = false; |
038659e7 LR |
1060 | bool bw_fits = false; |
1061 | ||
3e0c3ff3 | 1062 | if (!regd) |
361c9c8b | 1063 | return ERR_PTR(-EINVAL); |
b2e1b302 | 1064 | |
3e0c3ff3 | 1065 | for (i = 0; i < regd->n_reg_rules; i++) { |
b2e1b302 LR |
1066 | const struct ieee80211_reg_rule *rr; |
1067 | const struct ieee80211_freq_range *fr = NULL; | |
b2e1b302 | 1068 | |
3e0c3ff3 | 1069 | rr = ®d->reg_rules[i]; |
b2e1b302 | 1070 | fr = &rr->freq_range; |
0c7dc45d | 1071 | |
fb1fc7ad LR |
1072 | /* |
1073 | * We only need to know if one frequency rule was | |
0c7dc45d | 1074 | * was in center_freq's band, that's enough, so lets |
fb1fc7ad LR |
1075 | * not overwrite it once found |
1076 | */ | |
0c7dc45d LR |
1077 | if (!band_rule_found) |
1078 | band_rule_found = freq_in_rule_band(fr, center_freq); | |
1079 | ||
4edd5698 | 1080 | bw_fits = reg_does_bw_fit(fr, center_freq, bw); |
0c7dc45d | 1081 | |
361c9c8b JB |
1082 | if (band_rule_found && bw_fits) |
1083 | return rr; | |
8318d78a JB |
1084 | } |
1085 | ||
0c7dc45d | 1086 | if (!band_rule_found) |
361c9c8b | 1087 | return ERR_PTR(-ERANGE); |
0c7dc45d | 1088 | |
361c9c8b | 1089 | return ERR_PTR(-EINVAL); |
b2e1b302 LR |
1090 | } |
1091 | ||
8de1c63b JB |
1092 | static const struct ieee80211_reg_rule * |
1093 | __freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw) | |
1fa25e41 | 1094 | { |
4edd5698 MM |
1095 | const struct ieee80211_regdomain *regd = reg_get_regdomain(wiphy); |
1096 | const struct ieee80211_reg_rule *reg_rule = NULL; | |
1097 | u32 bw; | |
1a919318 | 1098 | |
4edd5698 MM |
1099 | for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) { |
1100 | reg_rule = freq_reg_info_regd(wiphy, center_freq, regd, bw); | |
1101 | if (!IS_ERR(reg_rule)) | |
1102 | return reg_rule; | |
1103 | } | |
5d885b99 | 1104 | |
4edd5698 MM |
1105 | return reg_rule; |
1106 | } | |
1107 | ||
1108 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, | |
1109 | u32 center_freq) | |
1110 | { | |
1111 | return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(20)); | |
1fa25e41 | 1112 | } |
4f366c5d | 1113 | EXPORT_SYMBOL(freq_reg_info); |
b2e1b302 | 1114 | |
034c6d6e | 1115 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
926a0a09 LR |
1116 | { |
1117 | switch (initiator) { | |
1118 | case NL80211_REGDOM_SET_BY_CORE: | |
034c6d6e | 1119 | return "core"; |
926a0a09 | 1120 | case NL80211_REGDOM_SET_BY_USER: |
034c6d6e | 1121 | return "user"; |
926a0a09 | 1122 | case NL80211_REGDOM_SET_BY_DRIVER: |
034c6d6e | 1123 | return "driver"; |
926a0a09 | 1124 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
034c6d6e | 1125 | return "country IE"; |
926a0a09 LR |
1126 | default: |
1127 | WARN_ON(1); | |
034c6d6e | 1128 | return "bug"; |
926a0a09 LR |
1129 | } |
1130 | } | |
034c6d6e | 1131 | EXPORT_SYMBOL(reg_initiator_name); |
e702d3cf | 1132 | |
b0dfd2ea JD |
1133 | static void chan_reg_rule_print_dbg(const struct ieee80211_regdomain *regd, |
1134 | struct ieee80211_channel *chan, | |
e702d3cf LR |
1135 | const struct ieee80211_reg_rule *reg_rule) |
1136 | { | |
81e92574 | 1137 | #ifdef CONFIG_CFG80211_REG_DEBUG |
e702d3cf LR |
1138 | const struct ieee80211_power_rule *power_rule; |
1139 | const struct ieee80211_freq_range *freq_range; | |
b0dfd2ea | 1140 | char max_antenna_gain[32], bw[32]; |
e702d3cf LR |
1141 | |
1142 | power_rule = ®_rule->power_rule; | |
1143 | freq_range = ®_rule->freq_range; | |
1144 | ||
1145 | if (!power_rule->max_antenna_gain) | |
b0dfd2ea | 1146 | snprintf(max_antenna_gain, sizeof(max_antenna_gain), "N/A"); |
e702d3cf | 1147 | else |
9f506802 | 1148 | snprintf(max_antenna_gain, sizeof(max_antenna_gain), "%d mBi", |
b0dfd2ea JD |
1149 | power_rule->max_antenna_gain); |
1150 | ||
1151 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) | |
1152 | snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO", | |
1153 | freq_range->max_bandwidth_khz, | |
1154 | reg_get_max_bandwidth(regd, reg_rule)); | |
1155 | else | |
1156 | snprintf(bw, sizeof(bw), "%d KHz", | |
1157 | freq_range->max_bandwidth_khz); | |
e702d3cf | 1158 | |
fe7ef5e9 JB |
1159 | REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n", |
1160 | chan->center_freq); | |
e702d3cf | 1161 | |
9f506802 | 1162 | REG_DBG_PRINT("(%d KHz - %d KHz @ %s), (%s, %d mBm)\n", |
1a919318 | 1163 | freq_range->start_freq_khz, freq_range->end_freq_khz, |
b0dfd2ea | 1164 | bw, max_antenna_gain, |
e702d3cf | 1165 | power_rule->max_eirp); |
926a0a09 | 1166 | #endif |
81e92574 | 1167 | } |
926a0a09 | 1168 | |
e33e2241 JB |
1169 | /* |
1170 | * Note that right now we assume the desired channel bandwidth | |
1171 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz | |
1172 | * per channel, the primary and the extension channel). | |
038659e7 | 1173 | */ |
7ca43d03 LR |
1174 | static void handle_channel(struct wiphy *wiphy, |
1175 | enum nl80211_reg_initiator initiator, | |
fdc9d7b2 | 1176 | struct ieee80211_channel *chan) |
b2e1b302 | 1177 | { |
038659e7 | 1178 | u32 flags, bw_flags = 0; |
b2e1b302 LR |
1179 | const struct ieee80211_reg_rule *reg_rule = NULL; |
1180 | const struct ieee80211_power_rule *power_rule = NULL; | |
038659e7 | 1181 | const struct ieee80211_freq_range *freq_range = NULL; |
fe33eb39 | 1182 | struct wiphy *request_wiphy = NULL; |
c492db37 | 1183 | struct regulatory_request *lr = get_last_request(); |
97524820 JD |
1184 | const struct ieee80211_regdomain *regd; |
1185 | u32 max_bandwidth_khz; | |
a92a3ce7 | 1186 | |
c492db37 | 1187 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
a92a3ce7 LR |
1188 | |
1189 | flags = chan->orig_flags; | |
b2e1b302 | 1190 | |
361c9c8b JB |
1191 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); |
1192 | if (IS_ERR(reg_rule)) { | |
ca4ffe8f LR |
1193 | /* |
1194 | * We will disable all channels that do not match our | |
25985edc | 1195 | * received regulatory rule unless the hint is coming |
ca4ffe8f LR |
1196 | * from a Country IE and the Country IE had no information |
1197 | * about a band. The IEEE 802.11 spec allows for an AP | |
1198 | * to send only a subset of the regulatory rules allowed, | |
1199 | * so an AP in the US that only supports 2.4 GHz may only send | |
1200 | * a country IE with information for the 2.4 GHz band | |
1201 | * while 5 GHz is still supported. | |
1202 | */ | |
1203 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
361c9c8b | 1204 | PTR_ERR(reg_rule) == -ERANGE) |
ca4ffe8f LR |
1205 | return; |
1206 | ||
cc493e4f LR |
1207 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
1208 | request_wiphy && request_wiphy == wiphy && | |
a2f73b6c | 1209 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
cc493e4f LR |
1210 | REG_DBG_PRINT("Disabling freq %d MHz for good\n", |
1211 | chan->center_freq); | |
1212 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; | |
1213 | chan->flags = chan->orig_flags; | |
1214 | } else { | |
1215 | REG_DBG_PRINT("Disabling freq %d MHz\n", | |
1216 | chan->center_freq); | |
1217 | chan->flags |= IEEE80211_CHAN_DISABLED; | |
1218 | } | |
8318d78a | 1219 | return; |
ca4ffe8f | 1220 | } |
8318d78a | 1221 | |
b0dfd2ea JD |
1222 | regd = reg_get_regdomain(wiphy); |
1223 | chan_reg_rule_print_dbg(regd, chan, reg_rule); | |
e702d3cf | 1224 | |
b2e1b302 | 1225 | power_rule = ®_rule->power_rule; |
038659e7 LR |
1226 | freq_range = ®_rule->freq_range; |
1227 | ||
97524820 JD |
1228 | max_bandwidth_khz = freq_range->max_bandwidth_khz; |
1229 | /* Check if auto calculation requested */ | |
b0dfd2ea | 1230 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
97524820 | 1231 | max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule); |
97524820 | 1232 | |
4edd5698 MM |
1233 | /* If we get a reg_rule we can assume that at least 5Mhz fit */ |
1234 | if (!reg_does_bw_fit(freq_range, MHZ_TO_KHZ(chan->center_freq), | |
1235 | MHZ_TO_KHZ(10))) | |
1236 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; | |
1237 | if (!reg_does_bw_fit(freq_range, MHZ_TO_KHZ(chan->center_freq), | |
1238 | MHZ_TO_KHZ(20))) | |
1239 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; | |
1240 | ||
1241 | if (max_bandwidth_khz < MHZ_TO_KHZ(10)) | |
1242 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; | |
1243 | if (max_bandwidth_khz < MHZ_TO_KHZ(20)) | |
1244 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; | |
97524820 | 1245 | if (max_bandwidth_khz < MHZ_TO_KHZ(40)) |
4edd5698 | 1246 | bw_flags |= IEEE80211_CHAN_NO_HT40; |
97524820 | 1247 | if (max_bandwidth_khz < MHZ_TO_KHZ(80)) |
c7a6ee27 | 1248 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
97524820 | 1249 | if (max_bandwidth_khz < MHZ_TO_KHZ(160)) |
c7a6ee27 | 1250 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
b2e1b302 | 1251 | |
c492db37 | 1252 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
806a9e39 | 1253 | request_wiphy && request_wiphy == wiphy && |
a2f73b6c | 1254 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
fb1fc7ad | 1255 | /* |
25985edc | 1256 | * This guarantees the driver's requested regulatory domain |
f976376d | 1257 | * will always be used as a base for further regulatory |
fb1fc7ad LR |
1258 | * settings |
1259 | */ | |
f976376d | 1260 | chan->flags = chan->orig_flags = |
038659e7 | 1261 | map_regdom_flags(reg_rule->flags) | bw_flags; |
f976376d LR |
1262 | chan->max_antenna_gain = chan->orig_mag = |
1263 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); | |
279f0f55 | 1264 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
f976376d | 1265 | (int) MBM_TO_DBM(power_rule->max_eirp); |
4f267c11 JD |
1266 | |
1267 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1268 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1269 | if (reg_rule->dfs_cac_ms) | |
1270 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
1271 | } | |
1272 | ||
f976376d LR |
1273 | return; |
1274 | } | |
1275 | ||
04f39047 SW |
1276 | chan->dfs_state = NL80211_DFS_USABLE; |
1277 | chan->dfs_state_entered = jiffies; | |
1278 | ||
aa3d7eef | 1279 | chan->beacon_found = false; |
038659e7 | 1280 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
1a919318 JB |
1281 | chan->max_antenna_gain = |
1282 | min_t(int, chan->orig_mag, | |
1283 | MBI_TO_DBI(power_rule->max_antenna_gain)); | |
eccc068e | 1284 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
089027e5 JD |
1285 | |
1286 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1287 | if (reg_rule->dfs_cac_ms) | |
1288 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
1289 | else | |
1290 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1291 | } | |
1292 | ||
5e31fc08 SG |
1293 | if (chan->orig_mpwr) { |
1294 | /* | |
a09a85a0 LR |
1295 | * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER |
1296 | * will always follow the passed country IE power settings. | |
5e31fc08 SG |
1297 | */ |
1298 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
a09a85a0 | 1299 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) |
5e31fc08 SG |
1300 | chan->max_power = chan->max_reg_power; |
1301 | else | |
1302 | chan->max_power = min(chan->orig_mpwr, | |
1303 | chan->max_reg_power); | |
1304 | } else | |
1305 | chan->max_power = chan->max_reg_power; | |
8318d78a JB |
1306 | } |
1307 | ||
7ca43d03 | 1308 | static void handle_band(struct wiphy *wiphy, |
fdc9d7b2 JB |
1309 | enum nl80211_reg_initiator initiator, |
1310 | struct ieee80211_supported_band *sband) | |
8318d78a | 1311 | { |
a92a3ce7 | 1312 | unsigned int i; |
a92a3ce7 | 1313 | |
fdc9d7b2 JB |
1314 | if (!sband) |
1315 | return; | |
8318d78a JB |
1316 | |
1317 | for (i = 0; i < sband->n_channels; i++) | |
fdc9d7b2 | 1318 | handle_channel(wiphy, initiator, &sband->channels[i]); |
8318d78a JB |
1319 | } |
1320 | ||
57b5ce07 LR |
1321 | static bool reg_request_cell_base(struct regulatory_request *request) |
1322 | { | |
1323 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) | |
1324 | return false; | |
1a919318 | 1325 | return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE; |
57b5ce07 LR |
1326 | } |
1327 | ||
1328 | bool reg_last_request_cell_base(void) | |
1329 | { | |
38fd2143 | 1330 | return reg_request_cell_base(get_last_request()); |
57b5ce07 LR |
1331 | } |
1332 | ||
94fc661f | 1333 | #ifdef CONFIG_CFG80211_REG_CELLULAR_HINTS |
57b5ce07 | 1334 | /* Core specific check */ |
2f92212b JB |
1335 | static enum reg_request_treatment |
1336 | reg_ignore_cell_hint(struct regulatory_request *pending_request) | |
57b5ce07 | 1337 | { |
c492db37 JB |
1338 | struct regulatory_request *lr = get_last_request(); |
1339 | ||
57b5ce07 | 1340 | if (!reg_num_devs_support_basehint) |
2f92212b | 1341 | return REG_REQ_IGNORE; |
57b5ce07 | 1342 | |
c492db37 | 1343 | if (reg_request_cell_base(lr) && |
1a919318 | 1344 | !regdom_changes(pending_request->alpha2)) |
2f92212b | 1345 | return REG_REQ_ALREADY_SET; |
1a919318 | 1346 | |
2f92212b | 1347 | return REG_REQ_OK; |
57b5ce07 LR |
1348 | } |
1349 | ||
1350 | /* Device specific check */ | |
1351 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) | |
1352 | { | |
1a919318 | 1353 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
57b5ce07 LR |
1354 | } |
1355 | #else | |
1356 | static int reg_ignore_cell_hint(struct regulatory_request *pending_request) | |
1357 | { | |
2f92212b | 1358 | return REG_REQ_IGNORE; |
57b5ce07 | 1359 | } |
1a919318 JB |
1360 | |
1361 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) | |
57b5ce07 LR |
1362 | { |
1363 | return true; | |
1364 | } | |
1365 | #endif | |
1366 | ||
fa1fb9cb LR |
1367 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
1368 | { | |
a2f73b6c LR |
1369 | if (wiphy->regulatory_flags & REGULATORY_STRICT_REG && |
1370 | !(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)) | |
fa1fb9cb LR |
1371 | return true; |
1372 | return false; | |
1373 | } | |
57b5ce07 | 1374 | |
7db90f4a LR |
1375 | static bool ignore_reg_update(struct wiphy *wiphy, |
1376 | enum nl80211_reg_initiator initiator) | |
14b9815a | 1377 | { |
c492db37 JB |
1378 | struct regulatory_request *lr = get_last_request(); |
1379 | ||
b0d7aa59 JD |
1380 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
1381 | return true; | |
1382 | ||
c492db37 | 1383 | if (!lr) { |
034c6d6e LR |
1384 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
1385 | "since last_request is not set\n", | |
926a0a09 | 1386 | reg_initiator_name(initiator)); |
14b9815a | 1387 | return true; |
926a0a09 LR |
1388 | } |
1389 | ||
7db90f4a | 1390 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
a2f73b6c | 1391 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
034c6d6e LR |
1392 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
1393 | "since the driver uses its own custom " | |
1394 | "regulatory domain\n", | |
926a0a09 | 1395 | reg_initiator_name(initiator)); |
14b9815a | 1396 | return true; |
926a0a09 LR |
1397 | } |
1398 | ||
fb1fc7ad LR |
1399 | /* |
1400 | * wiphy->regd will be set once the device has its own | |
1401 | * desired regulatory domain set | |
1402 | */ | |
fa1fb9cb | 1403 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
749b527b | 1404 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
c492db37 | 1405 | !is_world_regdom(lr->alpha2)) { |
034c6d6e LR |
1406 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
1407 | "since the driver requires its own regulatory " | |
1408 | "domain to be set first\n", | |
926a0a09 | 1409 | reg_initiator_name(initiator)); |
14b9815a | 1410 | return true; |
926a0a09 LR |
1411 | } |
1412 | ||
c492db37 | 1413 | if (reg_request_cell_base(lr)) |
57b5ce07 LR |
1414 | return reg_dev_ignore_cell_hint(wiphy); |
1415 | ||
14b9815a LR |
1416 | return false; |
1417 | } | |
1418 | ||
3195e489 LR |
1419 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
1420 | { | |
1421 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); | |
1422 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); | |
1423 | struct regulatory_request *lr = get_last_request(); | |
1424 | ||
1425 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) | |
1426 | return true; | |
1427 | ||
1428 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
a2f73b6c | 1429 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
3195e489 LR |
1430 | return true; |
1431 | ||
1432 | return false; | |
1433 | } | |
1434 | ||
1a919318 | 1435 | static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx, |
e38f8a7a LR |
1436 | struct reg_beacon *reg_beacon) |
1437 | { | |
e38f8a7a LR |
1438 | struct ieee80211_supported_band *sband; |
1439 | struct ieee80211_channel *chan; | |
6bad8766 LR |
1440 | bool channel_changed = false; |
1441 | struct ieee80211_channel chan_before; | |
e38f8a7a | 1442 | |
e38f8a7a LR |
1443 | sband = wiphy->bands[reg_beacon->chan.band]; |
1444 | chan = &sband->channels[chan_idx]; | |
1445 | ||
1446 | if (likely(chan->center_freq != reg_beacon->chan.center_freq)) | |
1447 | return; | |
1448 | ||
6bad8766 LR |
1449 | if (chan->beacon_found) |
1450 | return; | |
1451 | ||
1452 | chan->beacon_found = true; | |
1453 | ||
0f500a5f LR |
1454 | if (!reg_is_world_roaming(wiphy)) |
1455 | return; | |
1456 | ||
a2f73b6c | 1457 | if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS) |
37184244 LR |
1458 | return; |
1459 | ||
6bad8766 LR |
1460 | chan_before.center_freq = chan->center_freq; |
1461 | chan_before.flags = chan->flags; | |
1462 | ||
8fe02e16 LR |
1463 | if (chan->flags & IEEE80211_CHAN_NO_IR) { |
1464 | chan->flags &= ~IEEE80211_CHAN_NO_IR; | |
6bad8766 | 1465 | channel_changed = true; |
e38f8a7a LR |
1466 | } |
1467 | ||
6bad8766 LR |
1468 | if (channel_changed) |
1469 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); | |
e38f8a7a LR |
1470 | } |
1471 | ||
1472 | /* | |
1473 | * Called when a scan on a wiphy finds a beacon on | |
1474 | * new channel | |
1475 | */ | |
1476 | static void wiphy_update_new_beacon(struct wiphy *wiphy, | |
1477 | struct reg_beacon *reg_beacon) | |
1478 | { | |
1479 | unsigned int i; | |
1480 | struct ieee80211_supported_band *sband; | |
1481 | ||
e38f8a7a LR |
1482 | if (!wiphy->bands[reg_beacon->chan.band]) |
1483 | return; | |
1484 | ||
1485 | sband = wiphy->bands[reg_beacon->chan.band]; | |
1486 | ||
1487 | for (i = 0; i < sband->n_channels; i++) | |
1488 | handle_reg_beacon(wiphy, i, reg_beacon); | |
1489 | } | |
1490 | ||
1491 | /* | |
1492 | * Called upon reg changes or a new wiphy is added | |
1493 | */ | |
1494 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) | |
1495 | { | |
1496 | unsigned int i; | |
1497 | struct ieee80211_supported_band *sband; | |
1498 | struct reg_beacon *reg_beacon; | |
1499 | ||
e38f8a7a LR |
1500 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
1501 | if (!wiphy->bands[reg_beacon->chan.band]) | |
1502 | continue; | |
1503 | sband = wiphy->bands[reg_beacon->chan.band]; | |
1504 | for (i = 0; i < sband->n_channels; i++) | |
1505 | handle_reg_beacon(wiphy, i, reg_beacon); | |
1506 | } | |
1507 | } | |
1508 | ||
e38f8a7a LR |
1509 | /* Reap the advantages of previously found beacons */ |
1510 | static void reg_process_beacons(struct wiphy *wiphy) | |
1511 | { | |
b1ed8ddd LR |
1512 | /* |
1513 | * Means we are just firing up cfg80211, so no beacons would | |
1514 | * have been processed yet. | |
1515 | */ | |
1516 | if (!last_request) | |
1517 | return; | |
e38f8a7a LR |
1518 | wiphy_update_beacon_reg(wiphy); |
1519 | } | |
1520 | ||
1a919318 | 1521 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
038659e7 LR |
1522 | { |
1523 | if (!chan) | |
1a919318 | 1524 | return false; |
038659e7 | 1525 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
1a919318 | 1526 | return false; |
038659e7 | 1527 | /* This would happen when regulatory rules disallow HT40 completely */ |
55b183ad FF |
1528 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
1529 | return false; | |
1530 | return true; | |
038659e7 LR |
1531 | } |
1532 | ||
1533 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, | |
fdc9d7b2 | 1534 | struct ieee80211_channel *channel) |
038659e7 | 1535 | { |
fdc9d7b2 | 1536 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
038659e7 LR |
1537 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
1538 | unsigned int i; | |
1539 | ||
1a919318 | 1540 | if (!is_ht40_allowed(channel)) { |
038659e7 LR |
1541 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
1542 | return; | |
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * We need to ensure the extension channels exist to | |
1547 | * be able to use HT40- or HT40+, this finds them (or not) | |
1548 | */ | |
1549 | for (i = 0; i < sband->n_channels; i++) { | |
1550 | struct ieee80211_channel *c = &sband->channels[i]; | |
1a919318 | 1551 | |
038659e7 LR |
1552 | if (c->center_freq == (channel->center_freq - 20)) |
1553 | channel_before = c; | |
1554 | if (c->center_freq == (channel->center_freq + 20)) | |
1555 | channel_after = c; | |
1556 | } | |
1557 | ||
1558 | /* | |
1559 | * Please note that this assumes target bandwidth is 20 MHz, | |
1560 | * if that ever changes we also need to change the below logic | |
1561 | * to include that as well. | |
1562 | */ | |
1a919318 | 1563 | if (!is_ht40_allowed(channel_before)) |
689da1b3 | 1564 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
038659e7 | 1565 | else |
689da1b3 | 1566 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
038659e7 | 1567 | |
1a919318 | 1568 | if (!is_ht40_allowed(channel_after)) |
689da1b3 | 1569 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
038659e7 | 1570 | else |
689da1b3 | 1571 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
038659e7 LR |
1572 | } |
1573 | ||
1574 | static void reg_process_ht_flags_band(struct wiphy *wiphy, | |
fdc9d7b2 | 1575 | struct ieee80211_supported_band *sband) |
038659e7 LR |
1576 | { |
1577 | unsigned int i; | |
038659e7 | 1578 | |
fdc9d7b2 JB |
1579 | if (!sband) |
1580 | return; | |
038659e7 LR |
1581 | |
1582 | for (i = 0; i < sband->n_channels; i++) | |
fdc9d7b2 | 1583 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
038659e7 LR |
1584 | } |
1585 | ||
1586 | static void reg_process_ht_flags(struct wiphy *wiphy) | |
1587 | { | |
1588 | enum ieee80211_band band; | |
1589 | ||
1590 | if (!wiphy) | |
1591 | return; | |
1592 | ||
fdc9d7b2 JB |
1593 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
1594 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); | |
038659e7 LR |
1595 | } |
1596 | ||
0e3802db LR |
1597 | static void reg_call_notifier(struct wiphy *wiphy, |
1598 | struct regulatory_request *request) | |
1599 | { | |
1600 | if (wiphy->reg_notifier) | |
1601 | wiphy->reg_notifier(wiphy, request); | |
1602 | } | |
1603 | ||
ad932f04 AN |
1604 | static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev) |
1605 | { | |
ad932f04 AN |
1606 | struct cfg80211_chan_def chandef; |
1607 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
20658702 | 1608 | enum nl80211_iftype iftype; |
ad932f04 AN |
1609 | |
1610 | wdev_lock(wdev); | |
20658702 | 1611 | iftype = wdev->iftype; |
ad932f04 | 1612 | |
20658702 | 1613 | /* make sure the interface is active */ |
ad932f04 | 1614 | if (!wdev->netdev || !netif_running(wdev->netdev)) |
20658702 | 1615 | goto wdev_inactive_unlock; |
ad932f04 | 1616 | |
20658702 | 1617 | switch (iftype) { |
ad932f04 AN |
1618 | case NL80211_IFTYPE_AP: |
1619 | case NL80211_IFTYPE_P2P_GO: | |
1620 | if (!wdev->beacon_interval) | |
20658702 AN |
1621 | goto wdev_inactive_unlock; |
1622 | chandef = wdev->chandef; | |
185076d6 AN |
1623 | break; |
1624 | case NL80211_IFTYPE_ADHOC: | |
1625 | if (!wdev->ssid_len) | |
20658702 AN |
1626 | goto wdev_inactive_unlock; |
1627 | chandef = wdev->chandef; | |
ad932f04 AN |
1628 | break; |
1629 | case NL80211_IFTYPE_STATION: | |
1630 | case NL80211_IFTYPE_P2P_CLIENT: | |
ad932f04 AN |
1631 | if (!wdev->current_bss || |
1632 | !wdev->current_bss->pub.channel) | |
20658702 | 1633 | goto wdev_inactive_unlock; |
ad932f04 | 1634 | |
20658702 AN |
1635 | if (!rdev->ops->get_channel || |
1636 | rdev_get_channel(rdev, wdev, &chandef)) | |
1637 | cfg80211_chandef_create(&chandef, | |
1638 | wdev->current_bss->pub.channel, | |
1639 | NL80211_CHAN_NO_HT); | |
ad932f04 AN |
1640 | break; |
1641 | case NL80211_IFTYPE_MONITOR: | |
1642 | case NL80211_IFTYPE_AP_VLAN: | |
1643 | case NL80211_IFTYPE_P2P_DEVICE: | |
1644 | /* no enforcement required */ | |
1645 | break; | |
1646 | default: | |
1647 | /* others not implemented for now */ | |
1648 | WARN_ON(1); | |
1649 | break; | |
1650 | } | |
1651 | ||
ad932f04 | 1652 | wdev_unlock(wdev); |
20658702 AN |
1653 | |
1654 | switch (iftype) { | |
1655 | case NL80211_IFTYPE_AP: | |
1656 | case NL80211_IFTYPE_P2P_GO: | |
1657 | case NL80211_IFTYPE_ADHOC: | |
923b352f | 1658 | return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype); |
20658702 AN |
1659 | case NL80211_IFTYPE_STATION: |
1660 | case NL80211_IFTYPE_P2P_CLIENT: | |
1661 | return cfg80211_chandef_usable(wiphy, &chandef, | |
1662 | IEEE80211_CHAN_DISABLED); | |
1663 | default: | |
1664 | break; | |
1665 | } | |
1666 | ||
1667 | return true; | |
1668 | ||
1669 | wdev_inactive_unlock: | |
1670 | wdev_unlock(wdev); | |
1671 | return true; | |
ad932f04 AN |
1672 | } |
1673 | ||
1674 | static void reg_leave_invalid_chans(struct wiphy *wiphy) | |
1675 | { | |
1676 | struct wireless_dev *wdev; | |
1677 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1678 | ||
1679 | ASSERT_RTNL(); | |
1680 | ||
1681 | list_for_each_entry(wdev, &rdev->wdev_list, list) | |
1682 | if (!reg_wdev_chan_valid(wiphy, wdev)) | |
1683 | cfg80211_leave(rdev, wdev); | |
1684 | } | |
1685 | ||
1686 | static void reg_check_chans_work(struct work_struct *work) | |
1687 | { | |
1688 | struct cfg80211_registered_device *rdev; | |
1689 | ||
1690 | REG_DBG_PRINT("Verifying active interfaces after reg change\n"); | |
1691 | rtnl_lock(); | |
1692 | ||
1693 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) | |
1694 | if (!(rdev->wiphy.regulatory_flags & | |
1695 | REGULATORY_IGNORE_STALE_KICKOFF)) | |
1696 | reg_leave_invalid_chans(&rdev->wiphy); | |
1697 | ||
1698 | rtnl_unlock(); | |
1699 | } | |
1700 | ||
1701 | static void reg_check_channels(void) | |
1702 | { | |
1703 | /* | |
1704 | * Give usermode a chance to do something nicer (move to another | |
1705 | * channel, orderly disconnection), before forcing a disconnection. | |
1706 | */ | |
1707 | mod_delayed_work(system_power_efficient_wq, | |
1708 | ®_check_chans, | |
1709 | msecs_to_jiffies(REG_ENFORCE_GRACE_MS)); | |
1710 | } | |
1711 | ||
eac03e38 SN |
1712 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
1713 | enum nl80211_reg_initiator initiator) | |
b2e1b302 LR |
1714 | { |
1715 | enum ieee80211_band band; | |
c492db37 | 1716 | struct regulatory_request *lr = get_last_request(); |
eac03e38 | 1717 | |
0e3802db LR |
1718 | if (ignore_reg_update(wiphy, initiator)) { |
1719 | /* | |
1720 | * Regulatory updates set by CORE are ignored for custom | |
1721 | * regulatory cards. Let us notify the changes to the driver, | |
1722 | * as some drivers used this to restore its orig_* reg domain. | |
1723 | */ | |
1724 | if (initiator == NL80211_REGDOM_SET_BY_CORE && | |
a2f73b6c | 1725 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
0e3802db | 1726 | reg_call_notifier(wiphy, lr); |
a203c2aa | 1727 | return; |
0e3802db | 1728 | } |
a203c2aa | 1729 | |
c492db37 | 1730 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
b68e6b3b | 1731 | |
fdc9d7b2 JB |
1732 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
1733 | handle_band(wiphy, initiator, wiphy->bands[band]); | |
a203c2aa | 1734 | |
e38f8a7a | 1735 | reg_process_beacons(wiphy); |
038659e7 | 1736 | reg_process_ht_flags(wiphy); |
0e3802db | 1737 | reg_call_notifier(wiphy, lr); |
b2e1b302 LR |
1738 | } |
1739 | ||
d7549cbb SN |
1740 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
1741 | { | |
1742 | struct cfg80211_registered_device *rdev; | |
4a38994f | 1743 | struct wiphy *wiphy; |
d7549cbb | 1744 | |
5fe231e8 | 1745 | ASSERT_RTNL(); |
458f4f9e | 1746 | |
4a38994f RM |
1747 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1748 | wiphy = &rdev->wiphy; | |
1749 | wiphy_update_regulatory(wiphy, initiator); | |
4a38994f | 1750 | } |
ad932f04 AN |
1751 | |
1752 | reg_check_channels(); | |
d7549cbb SN |
1753 | } |
1754 | ||
1fa25e41 | 1755 | static void handle_channel_custom(struct wiphy *wiphy, |
fdc9d7b2 | 1756 | struct ieee80211_channel *chan, |
1fa25e41 LR |
1757 | const struct ieee80211_regdomain *regd) |
1758 | { | |
038659e7 | 1759 | u32 bw_flags = 0; |
1fa25e41 LR |
1760 | const struct ieee80211_reg_rule *reg_rule = NULL; |
1761 | const struct ieee80211_power_rule *power_rule = NULL; | |
038659e7 | 1762 | const struct ieee80211_freq_range *freq_range = NULL; |
97524820 | 1763 | u32 max_bandwidth_khz; |
4edd5698 | 1764 | u32 bw; |
ac46d48e | 1765 | |
4edd5698 MM |
1766 | for (bw = MHZ_TO_KHZ(20); bw >= MHZ_TO_KHZ(5); bw = bw / 2) { |
1767 | reg_rule = freq_reg_info_regd(wiphy, | |
1768 | MHZ_TO_KHZ(chan->center_freq), | |
1769 | regd, bw); | |
1770 | if (!IS_ERR(reg_rule)) | |
1771 | break; | |
1772 | } | |
1fa25e41 | 1773 | |
361c9c8b | 1774 | if (IS_ERR(reg_rule)) { |
fe7ef5e9 JB |
1775 | REG_DBG_PRINT("Disabling freq %d MHz as custom regd has no rule that fits it\n", |
1776 | chan->center_freq); | |
db8dfee5 AN |
1777 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) { |
1778 | chan->flags |= IEEE80211_CHAN_DISABLED; | |
1779 | } else { | |
1780 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; | |
1781 | chan->flags = chan->orig_flags; | |
1782 | } | |
1fa25e41 LR |
1783 | return; |
1784 | } | |
1785 | ||
b0dfd2ea | 1786 | chan_reg_rule_print_dbg(regd, chan, reg_rule); |
e702d3cf | 1787 | |
1fa25e41 | 1788 | power_rule = ®_rule->power_rule; |
038659e7 LR |
1789 | freq_range = ®_rule->freq_range; |
1790 | ||
97524820 JD |
1791 | max_bandwidth_khz = freq_range->max_bandwidth_khz; |
1792 | /* Check if auto calculation requested */ | |
b0dfd2ea | 1793 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
97524820 JD |
1794 | max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule); |
1795 | ||
4edd5698 MM |
1796 | /* If we get a reg_rule we can assume that at least 5Mhz fit */ |
1797 | if (!reg_does_bw_fit(freq_range, MHZ_TO_KHZ(chan->center_freq), | |
1798 | MHZ_TO_KHZ(10))) | |
1799 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; | |
1800 | if (!reg_does_bw_fit(freq_range, MHZ_TO_KHZ(chan->center_freq), | |
1801 | MHZ_TO_KHZ(20))) | |
1802 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; | |
1803 | ||
1804 | if (max_bandwidth_khz < MHZ_TO_KHZ(10)) | |
1805 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; | |
1806 | if (max_bandwidth_khz < MHZ_TO_KHZ(20)) | |
1807 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; | |
97524820 | 1808 | if (max_bandwidth_khz < MHZ_TO_KHZ(40)) |
4edd5698 | 1809 | bw_flags |= IEEE80211_CHAN_NO_HT40; |
97524820 | 1810 | if (max_bandwidth_khz < MHZ_TO_KHZ(80)) |
c7a6ee27 | 1811 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
97524820 | 1812 | if (max_bandwidth_khz < MHZ_TO_KHZ(160)) |
c7a6ee27 | 1813 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
1fa25e41 | 1814 | |
2e18b38f | 1815 | chan->dfs_state_entered = jiffies; |
c7ab5081 AN |
1816 | chan->dfs_state = NL80211_DFS_USABLE; |
1817 | ||
1818 | chan->beacon_found = false; | |
db8dfee5 AN |
1819 | |
1820 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) | |
1821 | chan->flags = chan->orig_flags | bw_flags | | |
1822 | map_regdom_flags(reg_rule->flags); | |
1823 | else | |
1824 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; | |
1825 | ||
1fa25e41 | 1826 | chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
279f0f55 FF |
1827 | chan->max_reg_power = chan->max_power = |
1828 | (int) MBM_TO_DBM(power_rule->max_eirp); | |
2e18b38f AN |
1829 | |
1830 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1831 | if (reg_rule->dfs_cac_ms) | |
1832 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
1833 | else | |
1834 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1835 | } | |
1836 | ||
1837 | chan->max_power = chan->max_reg_power; | |
1fa25e41 LR |
1838 | } |
1839 | ||
fdc9d7b2 JB |
1840 | static void handle_band_custom(struct wiphy *wiphy, |
1841 | struct ieee80211_supported_band *sband, | |
1fa25e41 LR |
1842 | const struct ieee80211_regdomain *regd) |
1843 | { | |
1844 | unsigned int i; | |
1fa25e41 | 1845 | |
fdc9d7b2 JB |
1846 | if (!sband) |
1847 | return; | |
1fa25e41 LR |
1848 | |
1849 | for (i = 0; i < sband->n_channels; i++) | |
fdc9d7b2 | 1850 | handle_channel_custom(wiphy, &sband->channels[i], regd); |
1fa25e41 LR |
1851 | } |
1852 | ||
1853 | /* Used by drivers prior to wiphy registration */ | |
1854 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, | |
1855 | const struct ieee80211_regdomain *regd) | |
1856 | { | |
1857 | enum ieee80211_band band; | |
bbcf3f02 | 1858 | unsigned int bands_set = 0; |
ac46d48e | 1859 | |
a2f73b6c LR |
1860 | WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG), |
1861 | "wiphy should have REGULATORY_CUSTOM_REG\n"); | |
1862 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; | |
222ea581 | 1863 | |
1fa25e41 | 1864 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
bbcf3f02 LR |
1865 | if (!wiphy->bands[band]) |
1866 | continue; | |
fdc9d7b2 | 1867 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
bbcf3f02 | 1868 | bands_set++; |
b2e1b302 | 1869 | } |
bbcf3f02 LR |
1870 | |
1871 | /* | |
1872 | * no point in calling this if it won't have any effect | |
1a919318 | 1873 | * on your device's supported bands. |
bbcf3f02 LR |
1874 | */ |
1875 | WARN_ON(!bands_set); | |
b2e1b302 | 1876 | } |
1fa25e41 LR |
1877 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
1878 | ||
b2e253cf LR |
1879 | static void reg_set_request_processed(void) |
1880 | { | |
1881 | bool need_more_processing = false; | |
c492db37 | 1882 | struct regulatory_request *lr = get_last_request(); |
b2e253cf | 1883 | |
c492db37 | 1884 | lr->processed = true; |
b2e253cf LR |
1885 | |
1886 | spin_lock(®_requests_lock); | |
1887 | if (!list_empty(®_requests_list)) | |
1888 | need_more_processing = true; | |
1889 | spin_unlock(®_requests_lock); | |
1890 | ||
b6863036 | 1891 | cancel_crda_timeout(); |
a90c7a31 | 1892 | |
b2e253cf LR |
1893 | if (need_more_processing) |
1894 | schedule_work(®_work); | |
1895 | } | |
1896 | ||
b3eb7f3f LR |
1897 | /** |
1898 | * reg_process_hint_core - process core regulatory requests | |
1899 | * @pending_request: a pending core regulatory request | |
1900 | * | |
1901 | * The wireless subsystem can use this function to process | |
1902 | * a regulatory request issued by the regulatory core. | |
b3eb7f3f | 1903 | */ |
d34265a3 JB |
1904 | static enum reg_request_treatment |
1905 | reg_process_hint_core(struct regulatory_request *core_request) | |
b3eb7f3f | 1906 | { |
cecbb069 | 1907 | if (reg_query_database(core_request)) { |
25b20dbd JB |
1908 | core_request->intersect = false; |
1909 | core_request->processed = false; | |
1910 | reg_update_last_request(core_request); | |
d34265a3 | 1911 | return REG_REQ_OK; |
25b20dbd | 1912 | } |
d34265a3 JB |
1913 | |
1914 | return REG_REQ_IGNORE; | |
b3eb7f3f LR |
1915 | } |
1916 | ||
0d97a619 LR |
1917 | static enum reg_request_treatment |
1918 | __reg_process_hint_user(struct regulatory_request *user_request) | |
1919 | { | |
1920 | struct regulatory_request *lr = get_last_request(); | |
1921 | ||
1922 | if (reg_request_cell_base(user_request)) | |
1923 | return reg_ignore_cell_hint(user_request); | |
1924 | ||
1925 | if (reg_request_cell_base(lr)) | |
1926 | return REG_REQ_IGNORE; | |
1927 | ||
1928 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
1929 | return REG_REQ_INTERSECT; | |
1930 | /* | |
1931 | * If the user knows better the user should set the regdom | |
1932 | * to their country before the IE is picked up | |
1933 | */ | |
1934 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && | |
1935 | lr->intersect) | |
1936 | return REG_REQ_IGNORE; | |
1937 | /* | |
1938 | * Process user requests only after previous user/driver/core | |
1939 | * requests have been processed | |
1940 | */ | |
1941 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || | |
1942 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || | |
1943 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && | |
1944 | regdom_changes(lr->alpha2)) | |
1945 | return REG_REQ_IGNORE; | |
1946 | ||
1947 | if (!regdom_changes(user_request->alpha2)) | |
1948 | return REG_REQ_ALREADY_SET; | |
1949 | ||
1950 | return REG_REQ_OK; | |
1951 | } | |
1952 | ||
1953 | /** | |
1954 | * reg_process_hint_user - process user regulatory requests | |
1955 | * @user_request: a pending user regulatory request | |
1956 | * | |
1957 | * The wireless subsystem can use this function to process | |
1958 | * a regulatory request initiated by userspace. | |
0d97a619 | 1959 | */ |
d34265a3 JB |
1960 | static enum reg_request_treatment |
1961 | reg_process_hint_user(struct regulatory_request *user_request) | |
0d97a619 LR |
1962 | { |
1963 | enum reg_request_treatment treatment; | |
0d97a619 LR |
1964 | |
1965 | treatment = __reg_process_hint_user(user_request); | |
1966 | if (treatment == REG_REQ_IGNORE || | |
d34265a3 JB |
1967 | treatment == REG_REQ_ALREADY_SET) |
1968 | return REG_REQ_IGNORE; | |
0d97a619 | 1969 | |
0d97a619 LR |
1970 | user_request->intersect = treatment == REG_REQ_INTERSECT; |
1971 | user_request->processed = false; | |
5ad6ef5e | 1972 | |
cecbb069 | 1973 | if (reg_query_database(user_request)) { |
25b20dbd JB |
1974 | reg_update_last_request(user_request); |
1975 | user_alpha2[0] = user_request->alpha2[0]; | |
1976 | user_alpha2[1] = user_request->alpha2[1]; | |
d34265a3 | 1977 | return REG_REQ_OK; |
25b20dbd | 1978 | } |
d34265a3 JB |
1979 | |
1980 | return REG_REQ_IGNORE; | |
0d97a619 LR |
1981 | } |
1982 | ||
21636c7f LR |
1983 | static enum reg_request_treatment |
1984 | __reg_process_hint_driver(struct regulatory_request *driver_request) | |
1985 | { | |
1986 | struct regulatory_request *lr = get_last_request(); | |
1987 | ||
1988 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { | |
1989 | if (regdom_changes(driver_request->alpha2)) | |
1990 | return REG_REQ_OK; | |
1991 | return REG_REQ_ALREADY_SET; | |
1992 | } | |
1993 | ||
1994 | /* | |
1995 | * This would happen if you unplug and plug your card | |
1996 | * back in or if you add a new device for which the previously | |
1997 | * loaded card also agrees on the regulatory domain. | |
1998 | */ | |
1999 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && | |
2000 | !regdom_changes(driver_request->alpha2)) | |
2001 | return REG_REQ_ALREADY_SET; | |
2002 | ||
2003 | return REG_REQ_INTERSECT; | |
2004 | } | |
2005 | ||
2006 | /** | |
2007 | * reg_process_hint_driver - process driver regulatory requests | |
2008 | * @driver_request: a pending driver regulatory request | |
2009 | * | |
2010 | * The wireless subsystem can use this function to process | |
2011 | * a regulatory request issued by an 802.11 driver. | |
2012 | * | |
2013 | * Returns one of the different reg request treatment values. | |
2014 | */ | |
2015 | static enum reg_request_treatment | |
2016 | reg_process_hint_driver(struct wiphy *wiphy, | |
2017 | struct regulatory_request *driver_request) | |
2018 | { | |
34f05f54 | 2019 | const struct ieee80211_regdomain *regd, *tmp; |
21636c7f | 2020 | enum reg_request_treatment treatment; |
21636c7f LR |
2021 | |
2022 | treatment = __reg_process_hint_driver(driver_request); | |
2023 | ||
2024 | switch (treatment) { | |
2025 | case REG_REQ_OK: | |
2026 | break; | |
2027 | case REG_REQ_IGNORE: | |
d34265a3 | 2028 | return REG_REQ_IGNORE; |
21636c7f | 2029 | case REG_REQ_INTERSECT: |
21636c7f LR |
2030 | case REG_REQ_ALREADY_SET: |
2031 | regd = reg_copy_regd(get_cfg80211_regdom()); | |
d34265a3 JB |
2032 | if (IS_ERR(regd)) |
2033 | return REG_REQ_IGNORE; | |
34f05f54 AN |
2034 | |
2035 | tmp = get_wiphy_regdom(wiphy); | |
21636c7f | 2036 | rcu_assign_pointer(wiphy->regd, regd); |
34f05f54 | 2037 | rcu_free_regdom(tmp); |
21636c7f LR |
2038 | } |
2039 | ||
21636c7f LR |
2040 | |
2041 | driver_request->intersect = treatment == REG_REQ_INTERSECT; | |
2042 | driver_request->processed = false; | |
5ad6ef5e | 2043 | |
21636c7f LR |
2044 | /* |
2045 | * Since CRDA will not be called in this case as we already | |
2046 | * have applied the requested regulatory domain before we just | |
2047 | * inform userspace we have processed the request | |
2048 | */ | |
2049 | if (treatment == REG_REQ_ALREADY_SET) { | |
2050 | nl80211_send_reg_change_event(driver_request); | |
25b20dbd | 2051 | reg_update_last_request(driver_request); |
21636c7f | 2052 | reg_set_request_processed(); |
480908a7 | 2053 | return REG_REQ_ALREADY_SET; |
21636c7f LR |
2054 | } |
2055 | ||
d34265a3 | 2056 | if (reg_query_database(driver_request)) { |
25b20dbd | 2057 | reg_update_last_request(driver_request); |
d34265a3 JB |
2058 | return REG_REQ_OK; |
2059 | } | |
25b20dbd | 2060 | |
d34265a3 | 2061 | return REG_REQ_IGNORE; |
21636c7f LR |
2062 | } |
2063 | ||
b23e7a9e LR |
2064 | static enum reg_request_treatment |
2065 | __reg_process_hint_country_ie(struct wiphy *wiphy, | |
2066 | struct regulatory_request *country_ie_request) | |
2067 | { | |
2068 | struct wiphy *last_wiphy = NULL; | |
2069 | struct regulatory_request *lr = get_last_request(); | |
2070 | ||
2071 | if (reg_request_cell_base(lr)) { | |
2072 | /* Trust a Cell base station over the AP's country IE */ | |
2073 | if (regdom_changes(country_ie_request->alpha2)) | |
2074 | return REG_REQ_IGNORE; | |
2075 | return REG_REQ_ALREADY_SET; | |
2a901468 LR |
2076 | } else { |
2077 | if (wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_IGNORE) | |
2078 | return REG_REQ_IGNORE; | |
b23e7a9e LR |
2079 | } |
2080 | ||
b23e7a9e LR |
2081 | if (unlikely(!is_an_alpha2(country_ie_request->alpha2))) |
2082 | return -EINVAL; | |
2f1c6c57 LR |
2083 | |
2084 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
2085 | return REG_REQ_OK; | |
2086 | ||
2087 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); | |
2088 | ||
2089 | if (last_wiphy != wiphy) { | |
b23e7a9e | 2090 | /* |
2f1c6c57 LR |
2091 | * Two cards with two APs claiming different |
2092 | * Country IE alpha2s. We could | |
2093 | * intersect them, but that seems unlikely | |
2094 | * to be correct. Reject second one for now. | |
b23e7a9e | 2095 | */ |
2f1c6c57 LR |
2096 | if (regdom_changes(country_ie_request->alpha2)) |
2097 | return REG_REQ_IGNORE; | |
b23e7a9e LR |
2098 | return REG_REQ_ALREADY_SET; |
2099 | } | |
70dcec5a EG |
2100 | |
2101 | if (regdom_changes(country_ie_request->alpha2)) | |
2f1c6c57 LR |
2102 | return REG_REQ_OK; |
2103 | return REG_REQ_ALREADY_SET; | |
b23e7a9e LR |
2104 | } |
2105 | ||
d1c96a9a | 2106 | /** |
b23e7a9e LR |
2107 | * reg_process_hint_country_ie - process regulatory requests from country IEs |
2108 | * @country_ie_request: a regulatory request from a country IE | |
d1c96a9a | 2109 | * |
b23e7a9e LR |
2110 | * The wireless subsystem can use this function to process |
2111 | * a regulatory request issued by a country Information Element. | |
d1c96a9a | 2112 | * |
2f92212b | 2113 | * Returns one of the different reg request treatment values. |
d1c96a9a | 2114 | */ |
2f92212b | 2115 | static enum reg_request_treatment |
b23e7a9e LR |
2116 | reg_process_hint_country_ie(struct wiphy *wiphy, |
2117 | struct regulatory_request *country_ie_request) | |
b2e1b302 | 2118 | { |
2f92212b | 2119 | enum reg_request_treatment treatment; |
761cf7ec | 2120 | |
b23e7a9e | 2121 | treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); |
9c96477d | 2122 | |
2f92212b | 2123 | switch (treatment) { |
2f92212b JB |
2124 | case REG_REQ_OK: |
2125 | break; | |
b23e7a9e | 2126 | case REG_REQ_IGNORE: |
d34265a3 | 2127 | return REG_REQ_IGNORE; |
b23e7a9e | 2128 | case REG_REQ_ALREADY_SET: |
c888393b | 2129 | reg_free_request(country_ie_request); |
480908a7 | 2130 | return REG_REQ_ALREADY_SET; |
b23e7a9e | 2131 | case REG_REQ_INTERSECT: |
fb1fc7ad | 2132 | /* |
b23e7a9e LR |
2133 | * This doesn't happen yet, not sure we |
2134 | * ever want to support it for this case. | |
fb1fc7ad | 2135 | */ |
b23e7a9e | 2136 | WARN_ONCE(1, "Unexpected intersection for country IEs"); |
d34265a3 | 2137 | return REG_REQ_IGNORE; |
3e0c3ff3 | 2138 | } |
b2e1b302 | 2139 | |
b23e7a9e LR |
2140 | country_ie_request->intersect = false; |
2141 | country_ie_request->processed = false; | |
5ad6ef5e | 2142 | |
d34265a3 | 2143 | if (reg_query_database(country_ie_request)) { |
25b20dbd | 2144 | reg_update_last_request(country_ie_request); |
d34265a3 JB |
2145 | return REG_REQ_OK; |
2146 | } | |
3e0c3ff3 | 2147 | |
d34265a3 | 2148 | return REG_REQ_IGNORE; |
b2e1b302 LR |
2149 | } |
2150 | ||
30a548c7 | 2151 | /* This processes *all* regulatory hints */ |
1daa37c7 | 2152 | static void reg_process_hint(struct regulatory_request *reg_request) |
fe33eb39 | 2153 | { |
fe33eb39 | 2154 | struct wiphy *wiphy = NULL; |
b3eb7f3f | 2155 | enum reg_request_treatment treatment; |
fe33eb39 | 2156 | |
f4173766 | 2157 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
fe33eb39 LR |
2158 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
2159 | ||
b3eb7f3f LR |
2160 | switch (reg_request->initiator) { |
2161 | case NL80211_REGDOM_SET_BY_CORE: | |
d34265a3 JB |
2162 | treatment = reg_process_hint_core(reg_request); |
2163 | break; | |
b3eb7f3f | 2164 | case NL80211_REGDOM_SET_BY_USER: |
d34265a3 JB |
2165 | treatment = reg_process_hint_user(reg_request); |
2166 | break; | |
b3eb7f3f | 2167 | case NL80211_REGDOM_SET_BY_DRIVER: |
772f0389 IP |
2168 | if (!wiphy) |
2169 | goto out_free; | |
21636c7f LR |
2170 | treatment = reg_process_hint_driver(wiphy, reg_request); |
2171 | break; | |
b3eb7f3f | 2172 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
772f0389 IP |
2173 | if (!wiphy) |
2174 | goto out_free; | |
b23e7a9e | 2175 | treatment = reg_process_hint_country_ie(wiphy, reg_request); |
b3eb7f3f LR |
2176 | break; |
2177 | default: | |
2178 | WARN(1, "invalid initiator %d\n", reg_request->initiator); | |
772f0389 | 2179 | goto out_free; |
b3eb7f3f LR |
2180 | } |
2181 | ||
d34265a3 JB |
2182 | if (treatment == REG_REQ_IGNORE) |
2183 | goto out_free; | |
2184 | ||
480908a7 JB |
2185 | WARN(treatment != REG_REQ_OK && treatment != REG_REQ_ALREADY_SET, |
2186 | "unexpected treatment value %d\n", treatment); | |
2187 | ||
841b351c JL |
2188 | /* This is required so that the orig_* parameters are saved. |
2189 | * NOTE: treatment must be set for any case that reaches here! | |
2190 | */ | |
b23e7a9e | 2191 | if (treatment == REG_REQ_ALREADY_SET && wiphy && |
ad932f04 | 2192 | wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
b23e7a9e | 2193 | wiphy_update_regulatory(wiphy, reg_request->initiator); |
ad932f04 AN |
2194 | reg_check_channels(); |
2195 | } | |
772f0389 IP |
2196 | |
2197 | return; | |
2198 | ||
2199 | out_free: | |
c888393b | 2200 | reg_free_request(reg_request); |
fe33eb39 LR |
2201 | } |
2202 | ||
ef51fb1d AN |
2203 | static bool reg_only_self_managed_wiphys(void) |
2204 | { | |
2205 | struct cfg80211_registered_device *rdev; | |
2206 | struct wiphy *wiphy; | |
2207 | bool self_managed_found = false; | |
2208 | ||
2209 | ASSERT_RTNL(); | |
2210 | ||
2211 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
2212 | wiphy = &rdev->wiphy; | |
2213 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) | |
2214 | self_managed_found = true; | |
2215 | else | |
2216 | return false; | |
2217 | } | |
2218 | ||
2219 | /* make sure at least one self-managed wiphy exists */ | |
2220 | return self_managed_found; | |
2221 | } | |
2222 | ||
b2e253cf LR |
2223 | /* |
2224 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* | |
2225 | * Regulatory hints come on a first come first serve basis and we | |
2226 | * must process each one atomically. | |
2227 | */ | |
fe33eb39 | 2228 | static void reg_process_pending_hints(void) |
b0e2880b | 2229 | { |
c492db37 | 2230 | struct regulatory_request *reg_request, *lr; |
fe33eb39 | 2231 | |
c492db37 | 2232 | lr = get_last_request(); |
b0e2880b | 2233 | |
b2e253cf | 2234 | /* When last_request->processed becomes true this will be rescheduled */ |
c492db37 | 2235 | if (lr && !lr->processed) { |
96cce12f | 2236 | reg_process_hint(lr); |
5fe231e8 | 2237 | return; |
b2e253cf LR |
2238 | } |
2239 | ||
fe33eb39 | 2240 | spin_lock(®_requests_lock); |
fe33eb39 | 2241 | |
b2e253cf | 2242 | if (list_empty(®_requests_list)) { |
d951c1dd | 2243 | spin_unlock(®_requests_lock); |
5fe231e8 | 2244 | return; |
fe33eb39 | 2245 | } |
b2e253cf LR |
2246 | |
2247 | reg_request = list_first_entry(®_requests_list, | |
2248 | struct regulatory_request, | |
2249 | list); | |
2250 | list_del_init(®_request->list); | |
2251 | ||
fe33eb39 | 2252 | spin_unlock(®_requests_lock); |
b0e2880b | 2253 | |
ef51fb1d AN |
2254 | if (reg_only_self_managed_wiphys()) { |
2255 | reg_free_request(reg_request); | |
2256 | return; | |
2257 | } | |
2258 | ||
1daa37c7 | 2259 | reg_process_hint(reg_request); |
2e54a689 B |
2260 | |
2261 | lr = get_last_request(); | |
2262 | ||
2263 | spin_lock(®_requests_lock); | |
2264 | if (!list_empty(®_requests_list) && lr && lr->processed) | |
2265 | schedule_work(®_work); | |
2266 | spin_unlock(®_requests_lock); | |
fe33eb39 LR |
2267 | } |
2268 | ||
e38f8a7a LR |
2269 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
2270 | static void reg_process_pending_beacon_hints(void) | |
2271 | { | |
79c97e97 | 2272 | struct cfg80211_registered_device *rdev; |
e38f8a7a LR |
2273 | struct reg_beacon *pending_beacon, *tmp; |
2274 | ||
e38f8a7a LR |
2275 | /* This goes through the _pending_ beacon list */ |
2276 | spin_lock_bh(®_pending_beacons_lock); | |
2277 | ||
e38f8a7a LR |
2278 | list_for_each_entry_safe(pending_beacon, tmp, |
2279 | ®_pending_beacons, list) { | |
e38f8a7a LR |
2280 | list_del_init(&pending_beacon->list); |
2281 | ||
2282 | /* Applies the beacon hint to current wiphys */ | |
79c97e97 JB |
2283 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
2284 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); | |
e38f8a7a LR |
2285 | |
2286 | /* Remembers the beacon hint for new wiphys or reg changes */ | |
2287 | list_add_tail(&pending_beacon->list, ®_beacon_list); | |
2288 | } | |
2289 | ||
2290 | spin_unlock_bh(®_pending_beacons_lock); | |
e38f8a7a LR |
2291 | } |
2292 | ||
b0d7aa59 JD |
2293 | static void reg_process_self_managed_hints(void) |
2294 | { | |
2295 | struct cfg80211_registered_device *rdev; | |
2296 | struct wiphy *wiphy; | |
2297 | const struct ieee80211_regdomain *tmp; | |
2298 | const struct ieee80211_regdomain *regd; | |
2299 | enum ieee80211_band band; | |
2300 | struct regulatory_request request = {}; | |
2301 | ||
2302 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
2303 | wiphy = &rdev->wiphy; | |
2304 | ||
2305 | spin_lock(®_requests_lock); | |
2306 | regd = rdev->requested_regd; | |
2307 | rdev->requested_regd = NULL; | |
2308 | spin_unlock(®_requests_lock); | |
2309 | ||
2310 | if (regd == NULL) | |
2311 | continue; | |
2312 | ||
2313 | tmp = get_wiphy_regdom(wiphy); | |
2314 | rcu_assign_pointer(wiphy->regd, regd); | |
2315 | rcu_free_regdom(tmp); | |
2316 | ||
2317 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) | |
2318 | handle_band_custom(wiphy, wiphy->bands[band], regd); | |
2319 | ||
2320 | reg_process_ht_flags(wiphy); | |
2321 | ||
2322 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
2323 | request.alpha2[0] = regd->alpha2[0]; | |
2324 | request.alpha2[1] = regd->alpha2[1]; | |
2325 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
2326 | ||
2327 | nl80211_send_wiphy_reg_change_event(&request); | |
2328 | } | |
2329 | ||
2330 | reg_check_channels(); | |
2331 | } | |
2332 | ||
fe33eb39 LR |
2333 | static void reg_todo(struct work_struct *work) |
2334 | { | |
5fe231e8 | 2335 | rtnl_lock(); |
fe33eb39 | 2336 | reg_process_pending_hints(); |
e38f8a7a | 2337 | reg_process_pending_beacon_hints(); |
b0d7aa59 | 2338 | reg_process_self_managed_hints(); |
5fe231e8 | 2339 | rtnl_unlock(); |
fe33eb39 LR |
2340 | } |
2341 | ||
fe33eb39 LR |
2342 | static void queue_regulatory_request(struct regulatory_request *request) |
2343 | { | |
d4f2c881 JB |
2344 | request->alpha2[0] = toupper(request->alpha2[0]); |
2345 | request->alpha2[1] = toupper(request->alpha2[1]); | |
c61029c7 | 2346 | |
fe33eb39 LR |
2347 | spin_lock(®_requests_lock); |
2348 | list_add_tail(&request->list, ®_requests_list); | |
2349 | spin_unlock(®_requests_lock); | |
2350 | ||
2351 | schedule_work(®_work); | |
2352 | } | |
2353 | ||
09d989d1 LR |
2354 | /* |
2355 | * Core regulatory hint -- happens during cfg80211_init() | |
2356 | * and when we restore regulatory settings. | |
2357 | */ | |
ba25c141 LR |
2358 | static int regulatory_hint_core(const char *alpha2) |
2359 | { | |
2360 | struct regulatory_request *request; | |
2361 | ||
1a919318 | 2362 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
ba25c141 LR |
2363 | if (!request) |
2364 | return -ENOMEM; | |
2365 | ||
2366 | request->alpha2[0] = alpha2[0]; | |
2367 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 2368 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
ba25c141 | 2369 | |
31e99729 | 2370 | queue_regulatory_request(request); |
5078b2e3 | 2371 | |
fe33eb39 | 2372 | return 0; |
ba25c141 LR |
2373 | } |
2374 | ||
fe33eb39 | 2375 | /* User hints */ |
57b5ce07 LR |
2376 | int regulatory_hint_user(const char *alpha2, |
2377 | enum nl80211_user_reg_hint_type user_reg_hint_type) | |
b2e1b302 | 2378 | { |
fe33eb39 LR |
2379 | struct regulatory_request *request; |
2380 | ||
fdc9d7b2 JB |
2381 | if (WARN_ON(!alpha2)) |
2382 | return -EINVAL; | |
b2e1b302 | 2383 | |
fe33eb39 LR |
2384 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
2385 | if (!request) | |
2386 | return -ENOMEM; | |
2387 | ||
f4173766 | 2388 | request->wiphy_idx = WIPHY_IDX_INVALID; |
fe33eb39 LR |
2389 | request->alpha2[0] = alpha2[0]; |
2390 | request->alpha2[1] = alpha2[1]; | |
e12822e1 | 2391 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
57b5ce07 | 2392 | request->user_reg_hint_type = user_reg_hint_type; |
fe33eb39 | 2393 | |
c37722bd | 2394 | /* Allow calling CRDA again */ |
b6863036 | 2395 | reset_crda_timeouts(); |
c37722bd | 2396 | |
fe33eb39 LR |
2397 | queue_regulatory_request(request); |
2398 | ||
2399 | return 0; | |
2400 | } | |
2401 | ||
05050753 | 2402 | int regulatory_hint_indoor(bool is_indoor, u32 portid) |
52616f2b | 2403 | { |
05050753 | 2404 | spin_lock(®_indoor_lock); |
52616f2b | 2405 | |
05050753 I |
2406 | /* It is possible that more than one user space process is trying to |
2407 | * configure the indoor setting. To handle such cases, clear the indoor | |
2408 | * setting in case that some process does not think that the device | |
2409 | * is operating in an indoor environment. In addition, if a user space | |
2410 | * process indicates that it is controlling the indoor setting, save its | |
2411 | * portid, i.e., make it the owner. | |
2412 | */ | |
2413 | reg_is_indoor = is_indoor; | |
2414 | if (reg_is_indoor) { | |
2415 | if (!reg_is_indoor_portid) | |
2416 | reg_is_indoor_portid = portid; | |
2417 | } else { | |
2418 | reg_is_indoor_portid = 0; | |
2419 | } | |
52616f2b | 2420 | |
05050753 | 2421 | spin_unlock(®_indoor_lock); |
52616f2b | 2422 | |
05050753 I |
2423 | if (!is_indoor) |
2424 | reg_check_channels(); | |
52616f2b IP |
2425 | |
2426 | return 0; | |
2427 | } | |
2428 | ||
05050753 I |
2429 | void regulatory_netlink_notify(u32 portid) |
2430 | { | |
2431 | spin_lock(®_indoor_lock); | |
2432 | ||
2433 | if (reg_is_indoor_portid != portid) { | |
2434 | spin_unlock(®_indoor_lock); | |
2435 | return; | |
2436 | } | |
2437 | ||
2438 | reg_is_indoor = false; | |
2439 | reg_is_indoor_portid = 0; | |
2440 | ||
2441 | spin_unlock(®_indoor_lock); | |
2442 | ||
2443 | reg_check_channels(); | |
2444 | } | |
2445 | ||
fe33eb39 LR |
2446 | /* Driver hints */ |
2447 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) | |
2448 | { | |
2449 | struct regulatory_request *request; | |
2450 | ||
fdc9d7b2 JB |
2451 | if (WARN_ON(!alpha2 || !wiphy)) |
2452 | return -EINVAL; | |
fe33eb39 | 2453 | |
4f7b9140 LR |
2454 | wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG; |
2455 | ||
fe33eb39 LR |
2456 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
2457 | if (!request) | |
2458 | return -ENOMEM; | |
2459 | ||
2460 | request->wiphy_idx = get_wiphy_idx(wiphy); | |
2461 | ||
fe33eb39 LR |
2462 | request->alpha2[0] = alpha2[0]; |
2463 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 2464 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
fe33eb39 | 2465 | |
c37722bd | 2466 | /* Allow calling CRDA again */ |
b6863036 | 2467 | reset_crda_timeouts(); |
c37722bd | 2468 | |
fe33eb39 LR |
2469 | queue_regulatory_request(request); |
2470 | ||
2471 | return 0; | |
b2e1b302 LR |
2472 | } |
2473 | EXPORT_SYMBOL(regulatory_hint); | |
2474 | ||
789fd033 LR |
2475 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band, |
2476 | const u8 *country_ie, u8 country_ie_len) | |
3f2355cb | 2477 | { |
3f2355cb | 2478 | char alpha2[2]; |
3f2355cb | 2479 | enum environment_cap env = ENVIRON_ANY; |
db2424c5 | 2480 | struct regulatory_request *request = NULL, *lr; |
d335fe63 | 2481 | |
3f2355cb LR |
2482 | /* IE len must be evenly divisible by 2 */ |
2483 | if (country_ie_len & 0x01) | |
db2424c5 | 2484 | return; |
3f2355cb LR |
2485 | |
2486 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
db2424c5 JB |
2487 | return; |
2488 | ||
2489 | request = kzalloc(sizeof(*request), GFP_KERNEL); | |
2490 | if (!request) | |
2491 | return; | |
3f2355cb | 2492 | |
3f2355cb LR |
2493 | alpha2[0] = country_ie[0]; |
2494 | alpha2[1] = country_ie[1]; | |
2495 | ||
2496 | if (country_ie[2] == 'I') | |
2497 | env = ENVIRON_INDOOR; | |
2498 | else if (country_ie[2] == 'O') | |
2499 | env = ENVIRON_OUTDOOR; | |
2500 | ||
db2424c5 JB |
2501 | rcu_read_lock(); |
2502 | lr = get_last_request(); | |
2503 | ||
2504 | if (unlikely(!lr)) | |
2505 | goto out; | |
2506 | ||
fb1fc7ad | 2507 | /* |
8b19e6ca | 2508 | * We will run this only upon a successful connection on cfg80211. |
4b44c8bc | 2509 | * We leave conflict resolution to the workqueue, where can hold |
5fe231e8 | 2510 | * the RTNL. |
fb1fc7ad | 2511 | */ |
c492db37 JB |
2512 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
2513 | lr->wiphy_idx != WIPHY_IDX_INVALID) | |
4b44c8bc | 2514 | goto out; |
3f2355cb | 2515 | |
fe33eb39 | 2516 | request->wiphy_idx = get_wiphy_idx(wiphy); |
4f366c5d JL |
2517 | request->alpha2[0] = alpha2[0]; |
2518 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 2519 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
fe33eb39 LR |
2520 | request->country_ie_env = env; |
2521 | ||
c37722bd | 2522 | /* Allow calling CRDA again */ |
b6863036 | 2523 | reset_crda_timeouts(); |
c37722bd | 2524 | |
fe33eb39 | 2525 | queue_regulatory_request(request); |
db2424c5 | 2526 | request = NULL; |
3f2355cb | 2527 | out: |
db2424c5 JB |
2528 | kfree(request); |
2529 | rcu_read_unlock(); | |
3f2355cb | 2530 | } |
b2e1b302 | 2531 | |
09d989d1 LR |
2532 | static void restore_alpha2(char *alpha2, bool reset_user) |
2533 | { | |
2534 | /* indicates there is no alpha2 to consider for restoration */ | |
2535 | alpha2[0] = '9'; | |
2536 | alpha2[1] = '7'; | |
2537 | ||
2538 | /* The user setting has precedence over the module parameter */ | |
2539 | if (is_user_regdom_saved()) { | |
2540 | /* Unless we're asked to ignore it and reset it */ | |
2541 | if (reset_user) { | |
1a919318 | 2542 | REG_DBG_PRINT("Restoring regulatory settings including user preference\n"); |
09d989d1 LR |
2543 | user_alpha2[0] = '9'; |
2544 | user_alpha2[1] = '7'; | |
2545 | ||
2546 | /* | |
2547 | * If we're ignoring user settings, we still need to | |
2548 | * check the module parameter to ensure we put things | |
2549 | * back as they were for a full restore. | |
2550 | */ | |
2551 | if (!is_world_regdom(ieee80211_regdom)) { | |
1a919318 JB |
2552 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
2553 | ieee80211_regdom[0], ieee80211_regdom[1]); | |
09d989d1 LR |
2554 | alpha2[0] = ieee80211_regdom[0]; |
2555 | alpha2[1] = ieee80211_regdom[1]; | |
2556 | } | |
2557 | } else { | |
1a919318 JB |
2558 | REG_DBG_PRINT("Restoring regulatory settings while preserving user preference for: %c%c\n", |
2559 | user_alpha2[0], user_alpha2[1]); | |
09d989d1 LR |
2560 | alpha2[0] = user_alpha2[0]; |
2561 | alpha2[1] = user_alpha2[1]; | |
2562 | } | |
2563 | } else if (!is_world_regdom(ieee80211_regdom)) { | |
1a919318 JB |
2564 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
2565 | ieee80211_regdom[0], ieee80211_regdom[1]); | |
09d989d1 LR |
2566 | alpha2[0] = ieee80211_regdom[0]; |
2567 | alpha2[1] = ieee80211_regdom[1]; | |
2568 | } else | |
d91e41b6 | 2569 | REG_DBG_PRINT("Restoring regulatory settings\n"); |
09d989d1 LR |
2570 | } |
2571 | ||
5ce543d1 RM |
2572 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
2573 | { | |
2574 | struct ieee80211_supported_band *sband; | |
2575 | enum ieee80211_band band; | |
2576 | struct ieee80211_channel *chan; | |
2577 | int i; | |
2578 | ||
2579 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
2580 | sband = wiphy->bands[band]; | |
2581 | if (!sband) | |
2582 | continue; | |
2583 | for (i = 0; i < sband->n_channels; i++) { | |
2584 | chan = &sband->channels[i]; | |
2585 | chan->flags = chan->orig_flags; | |
2586 | chan->max_antenna_gain = chan->orig_mag; | |
2587 | chan->max_power = chan->orig_mpwr; | |
899852af | 2588 | chan->beacon_found = false; |
5ce543d1 RM |
2589 | } |
2590 | } | |
2591 | } | |
2592 | ||
09d989d1 LR |
2593 | /* |
2594 | * Restoring regulatory settings involves ingoring any | |
2595 | * possibly stale country IE information and user regulatory | |
2596 | * settings if so desired, this includes any beacon hints | |
2597 | * learned as we could have traveled outside to another country | |
2598 | * after disconnection. To restore regulatory settings we do | |
2599 | * exactly what we did at bootup: | |
2600 | * | |
2601 | * - send a core regulatory hint | |
2602 | * - send a user regulatory hint if applicable | |
2603 | * | |
2604 | * Device drivers that send a regulatory hint for a specific country | |
2605 | * keep their own regulatory domain on wiphy->regd so that does does | |
2606 | * not need to be remembered. | |
2607 | */ | |
2608 | static void restore_regulatory_settings(bool reset_user) | |
2609 | { | |
2610 | char alpha2[2]; | |
cee0bec5 | 2611 | char world_alpha2[2]; |
09d989d1 | 2612 | struct reg_beacon *reg_beacon, *btmp; |
14609555 | 2613 | LIST_HEAD(tmp_reg_req_list); |
5ce543d1 | 2614 | struct cfg80211_registered_device *rdev; |
09d989d1 | 2615 | |
5fe231e8 JB |
2616 | ASSERT_RTNL(); |
2617 | ||
05050753 I |
2618 | /* |
2619 | * Clear the indoor setting in case that it is not controlled by user | |
2620 | * space, as otherwise there is no guarantee that the device is still | |
2621 | * operating in an indoor environment. | |
2622 | */ | |
2623 | spin_lock(®_indoor_lock); | |
2624 | if (reg_is_indoor && !reg_is_indoor_portid) { | |
2625 | reg_is_indoor = false; | |
2626 | reg_check_channels(); | |
2627 | } | |
2628 | spin_unlock(®_indoor_lock); | |
52616f2b | 2629 | |
2d319867 | 2630 | reset_regdomains(true, &world_regdom); |
09d989d1 LR |
2631 | restore_alpha2(alpha2, reset_user); |
2632 | ||
14609555 LR |
2633 | /* |
2634 | * If there's any pending requests we simply | |
2635 | * stash them to a temporary pending queue and | |
2636 | * add then after we've restored regulatory | |
2637 | * settings. | |
2638 | */ | |
2639 | spin_lock(®_requests_lock); | |
eeca9fce | 2640 | list_splice_tail_init(®_requests_list, &tmp_reg_req_list); |
14609555 LR |
2641 | spin_unlock(®_requests_lock); |
2642 | ||
09d989d1 LR |
2643 | /* Clear beacon hints */ |
2644 | spin_lock_bh(®_pending_beacons_lock); | |
fea9bced JB |
2645 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
2646 | list_del(®_beacon->list); | |
2647 | kfree(reg_beacon); | |
09d989d1 LR |
2648 | } |
2649 | spin_unlock_bh(®_pending_beacons_lock); | |
2650 | ||
fea9bced JB |
2651 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
2652 | list_del(®_beacon->list); | |
2653 | kfree(reg_beacon); | |
09d989d1 LR |
2654 | } |
2655 | ||
2656 | /* First restore to the basic regulatory settings */ | |
379b82f4 JB |
2657 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
2658 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; | |
09d989d1 | 2659 | |
5ce543d1 | 2660 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
b0d7aa59 JD |
2661 | if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
2662 | continue; | |
a2f73b6c | 2663 | if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG) |
5ce543d1 RM |
2664 | restore_custom_reg_settings(&rdev->wiphy); |
2665 | } | |
2666 | ||
cee0bec5 | 2667 | regulatory_hint_core(world_alpha2); |
09d989d1 LR |
2668 | |
2669 | /* | |
2670 | * This restores the ieee80211_regdom module parameter | |
2671 | * preference or the last user requested regulatory | |
2672 | * settings, user regulatory settings takes precedence. | |
2673 | */ | |
2674 | if (is_an_alpha2(alpha2)) | |
549cc1c5 | 2675 | regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER); |
09d989d1 | 2676 | |
14609555 | 2677 | spin_lock(®_requests_lock); |
11cff96c | 2678 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
14609555 LR |
2679 | spin_unlock(®_requests_lock); |
2680 | ||
14609555 LR |
2681 | REG_DBG_PRINT("Kicking the queue\n"); |
2682 | ||
2683 | schedule_work(®_work); | |
2684 | } | |
09d989d1 LR |
2685 | |
2686 | void regulatory_hint_disconnect(void) | |
2687 | { | |
1a919318 | 2688 | REG_DBG_PRINT("All devices are disconnected, going to restore regulatory settings\n"); |
09d989d1 LR |
2689 | restore_regulatory_settings(false); |
2690 | } | |
2691 | ||
e38f8a7a LR |
2692 | static bool freq_is_chan_12_13_14(u16 freq) |
2693 | { | |
59eb21a6 BR |
2694 | if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) || |
2695 | freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) || | |
2696 | freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ)) | |
e38f8a7a LR |
2697 | return true; |
2698 | return false; | |
2699 | } | |
2700 | ||
3ebfa6e7 LR |
2701 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
2702 | { | |
2703 | struct reg_beacon *pending_beacon; | |
2704 | ||
2705 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) | |
2706 | if (beacon_chan->center_freq == | |
2707 | pending_beacon->chan.center_freq) | |
2708 | return true; | |
2709 | return false; | |
2710 | } | |
2711 | ||
e38f8a7a LR |
2712 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
2713 | struct ieee80211_channel *beacon_chan, | |
2714 | gfp_t gfp) | |
2715 | { | |
2716 | struct reg_beacon *reg_beacon; | |
3ebfa6e7 | 2717 | bool processing; |
e38f8a7a | 2718 | |
1a919318 JB |
2719 | if (beacon_chan->beacon_found || |
2720 | beacon_chan->flags & IEEE80211_CHAN_RADAR || | |
e38f8a7a | 2721 | (beacon_chan->band == IEEE80211_BAND_2GHZ && |
1a919318 | 2722 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
e38f8a7a LR |
2723 | return 0; |
2724 | ||
3ebfa6e7 LR |
2725 | spin_lock_bh(®_pending_beacons_lock); |
2726 | processing = pending_reg_beacon(beacon_chan); | |
2727 | spin_unlock_bh(®_pending_beacons_lock); | |
2728 | ||
2729 | if (processing) | |
e38f8a7a LR |
2730 | return 0; |
2731 | ||
2732 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); | |
2733 | if (!reg_beacon) | |
2734 | return -ENOMEM; | |
2735 | ||
1a919318 | 2736 | REG_DBG_PRINT("Found new beacon on frequency: %d MHz (Ch %d) on %s\n", |
4113f751 LR |
2737 | beacon_chan->center_freq, |
2738 | ieee80211_frequency_to_channel(beacon_chan->center_freq), | |
2739 | wiphy_name(wiphy)); | |
2740 | ||
e38f8a7a | 2741 | memcpy(®_beacon->chan, beacon_chan, |
1a919318 | 2742 | sizeof(struct ieee80211_channel)); |
e38f8a7a LR |
2743 | |
2744 | /* | |
2745 | * Since we can be called from BH or and non-BH context | |
2746 | * we must use spin_lock_bh() | |
2747 | */ | |
2748 | spin_lock_bh(®_pending_beacons_lock); | |
2749 | list_add_tail(®_beacon->list, ®_pending_beacons); | |
2750 | spin_unlock_bh(®_pending_beacons_lock); | |
2751 | ||
2752 | schedule_work(®_work); | |
2753 | ||
2754 | return 0; | |
2755 | } | |
2756 | ||
a3d2eaf0 | 2757 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
b2e1b302 LR |
2758 | { |
2759 | unsigned int i; | |
a3d2eaf0 JB |
2760 | const struct ieee80211_reg_rule *reg_rule = NULL; |
2761 | const struct ieee80211_freq_range *freq_range = NULL; | |
2762 | const struct ieee80211_power_rule *power_rule = NULL; | |
089027e5 | 2763 | char bw[32], cac_time[32]; |
b2e1b302 | 2764 | |
089027e5 | 2765 | pr_info(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)\n"); |
b2e1b302 LR |
2766 | |
2767 | for (i = 0; i < rd->n_reg_rules; i++) { | |
2768 | reg_rule = &rd->reg_rules[i]; | |
2769 | freq_range = ®_rule->freq_range; | |
2770 | power_rule = ®_rule->power_rule; | |
2771 | ||
b0dfd2ea JD |
2772 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
2773 | snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO", | |
2774 | freq_range->max_bandwidth_khz, | |
97524820 JD |
2775 | reg_get_max_bandwidth(rd, reg_rule)); |
2776 | else | |
b0dfd2ea | 2777 | snprintf(bw, sizeof(bw), "%d KHz", |
97524820 JD |
2778 | freq_range->max_bandwidth_khz); |
2779 | ||
089027e5 JD |
2780 | if (reg_rule->flags & NL80211_RRF_DFS) |
2781 | scnprintf(cac_time, sizeof(cac_time), "%u s", | |
2782 | reg_rule->dfs_cac_ms/1000); | |
2783 | else | |
2784 | scnprintf(cac_time, sizeof(cac_time), "N/A"); | |
2785 | ||
2786 | ||
fb1fc7ad LR |
2787 | /* |
2788 | * There may not be documentation for max antenna gain | |
2789 | * in certain regions | |
2790 | */ | |
b2e1b302 | 2791 | if (power_rule->max_antenna_gain) |
089027e5 | 2792 | pr_info(" (%d KHz - %d KHz @ %s), (%d mBi, %d mBm), (%s)\n", |
b2e1b302 LR |
2793 | freq_range->start_freq_khz, |
2794 | freq_range->end_freq_khz, | |
97524820 | 2795 | bw, |
b2e1b302 | 2796 | power_rule->max_antenna_gain, |
089027e5 JD |
2797 | power_rule->max_eirp, |
2798 | cac_time); | |
b2e1b302 | 2799 | else |
089027e5 | 2800 | pr_info(" (%d KHz - %d KHz @ %s), (N/A, %d mBm), (%s)\n", |
b2e1b302 LR |
2801 | freq_range->start_freq_khz, |
2802 | freq_range->end_freq_khz, | |
97524820 | 2803 | bw, |
089027e5 JD |
2804 | power_rule->max_eirp, |
2805 | cac_time); | |
b2e1b302 LR |
2806 | } |
2807 | } | |
2808 | ||
4c7d3982 | 2809 | bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region) |
8b60b078 LR |
2810 | { |
2811 | switch (dfs_region) { | |
2812 | case NL80211_DFS_UNSET: | |
2813 | case NL80211_DFS_FCC: | |
2814 | case NL80211_DFS_ETSI: | |
2815 | case NL80211_DFS_JP: | |
2816 | return true; | |
2817 | default: | |
2818 | REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n", | |
2819 | dfs_region); | |
2820 | return false; | |
2821 | } | |
2822 | } | |
2823 | ||
a3d2eaf0 | 2824 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
b2e1b302 | 2825 | { |
c492db37 | 2826 | struct regulatory_request *lr = get_last_request(); |
b2e1b302 | 2827 | |
3f2355cb | 2828 | if (is_intersected_alpha2(rd->alpha2)) { |
c492db37 | 2829 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
79c97e97 | 2830 | struct cfg80211_registered_device *rdev; |
c492db37 | 2831 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
79c97e97 | 2832 | if (rdev) { |
e9c0268f | 2833 | pr_info("Current regulatory domain updated by AP to: %c%c\n", |
79c97e97 JB |
2834 | rdev->country_ie_alpha2[0], |
2835 | rdev->country_ie_alpha2[1]); | |
3f2355cb | 2836 | } else |
e9c0268f | 2837 | pr_info("Current regulatory domain intersected:\n"); |
3f2355cb | 2838 | } else |
e9c0268f | 2839 | pr_info("Current regulatory domain intersected:\n"); |
1a919318 | 2840 | } else if (is_world_regdom(rd->alpha2)) { |
e9c0268f | 2841 | pr_info("World regulatory domain updated:\n"); |
1a919318 | 2842 | } else { |
b2e1b302 | 2843 | if (is_unknown_alpha2(rd->alpha2)) |
e9c0268f | 2844 | pr_info("Regulatory domain changed to driver built-in settings (unknown country)\n"); |
57b5ce07 | 2845 | else { |
c492db37 | 2846 | if (reg_request_cell_base(lr)) |
1a919318 | 2847 | pr_info("Regulatory domain changed to country: %c%c by Cell Station\n", |
57b5ce07 LR |
2848 | rd->alpha2[0], rd->alpha2[1]); |
2849 | else | |
1a919318 | 2850 | pr_info("Regulatory domain changed to country: %c%c\n", |
57b5ce07 LR |
2851 | rd->alpha2[0], rd->alpha2[1]); |
2852 | } | |
b2e1b302 | 2853 | } |
1a919318 | 2854 | |
3ef121b5 | 2855 | pr_info(" DFS Master region: %s", reg_dfs_region_str(rd->dfs_region)); |
b2e1b302 LR |
2856 | print_rd_rules(rd); |
2857 | } | |
2858 | ||
2df78167 | 2859 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
b2e1b302 | 2860 | { |
e9c0268f | 2861 | pr_info("Regulatory domain: %c%c\n", rd->alpha2[0], rd->alpha2[1]); |
b2e1b302 LR |
2862 | print_rd_rules(rd); |
2863 | } | |
2864 | ||
3b9e5aca LR |
2865 | static int reg_set_rd_core(const struct ieee80211_regdomain *rd) |
2866 | { | |
2867 | if (!is_world_regdom(rd->alpha2)) | |
2868 | return -EINVAL; | |
2869 | update_world_regdomain(rd); | |
2870 | return 0; | |
2871 | } | |
2872 | ||
84721d44 LR |
2873 | static int reg_set_rd_user(const struct ieee80211_regdomain *rd, |
2874 | struct regulatory_request *user_request) | |
2875 | { | |
2876 | const struct ieee80211_regdomain *intersected_rd = NULL; | |
2877 | ||
84721d44 LR |
2878 | if (!regdom_changes(rd->alpha2)) |
2879 | return -EALREADY; | |
2880 | ||
2881 | if (!is_valid_rd(rd)) { | |
2882 | pr_err("Invalid regulatory domain detected:\n"); | |
2883 | print_regdomain_info(rd); | |
2884 | return -EINVAL; | |
2885 | } | |
2886 | ||
2887 | if (!user_request->intersect) { | |
2888 | reset_regdomains(false, rd); | |
2889 | return 0; | |
2890 | } | |
2891 | ||
2892 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); | |
2893 | if (!intersected_rd) | |
2894 | return -EINVAL; | |
2895 | ||
2896 | kfree(rd); | |
2897 | rd = NULL; | |
2898 | reset_regdomains(false, intersected_rd); | |
2899 | ||
2900 | return 0; | |
2901 | } | |
2902 | ||
f5fe3247 LR |
2903 | static int reg_set_rd_driver(const struct ieee80211_regdomain *rd, |
2904 | struct regulatory_request *driver_request) | |
b2e1b302 | 2905 | { |
e9763c3c | 2906 | const struct ieee80211_regdomain *regd; |
9c96477d | 2907 | const struct ieee80211_regdomain *intersected_rd = NULL; |
f5fe3247 | 2908 | const struct ieee80211_regdomain *tmp; |
806a9e39 | 2909 | struct wiphy *request_wiphy; |
6913b49a | 2910 | |
f5fe3247 | 2911 | if (is_world_regdom(rd->alpha2)) |
b2e1b302 LR |
2912 | return -EINVAL; |
2913 | ||
f5fe3247 LR |
2914 | if (!regdom_changes(rd->alpha2)) |
2915 | return -EALREADY; | |
b2e1b302 | 2916 | |
8375af3b | 2917 | if (!is_valid_rd(rd)) { |
e9c0268f | 2918 | pr_err("Invalid regulatory domain detected:\n"); |
8375af3b LR |
2919 | print_regdomain_info(rd); |
2920 | return -EINVAL; | |
b2e1b302 LR |
2921 | } |
2922 | ||
f5fe3247 | 2923 | request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx); |
922ec58c | 2924 | if (!request_wiphy) |
de3584bd | 2925 | return -ENODEV; |
806a9e39 | 2926 | |
f5fe3247 | 2927 | if (!driver_request->intersect) { |
558f6d32 LR |
2928 | if (request_wiphy->regd) |
2929 | return -EALREADY; | |
3e0c3ff3 | 2930 | |
e9763c3c JB |
2931 | regd = reg_copy_regd(rd); |
2932 | if (IS_ERR(regd)) | |
2933 | return PTR_ERR(regd); | |
3e0c3ff3 | 2934 | |
458f4f9e | 2935 | rcu_assign_pointer(request_wiphy->regd, regd); |
379b82f4 | 2936 | reset_regdomains(false, rd); |
b8295acd LR |
2937 | return 0; |
2938 | } | |
2939 | ||
f5fe3247 LR |
2940 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
2941 | if (!intersected_rd) | |
2942 | return -EINVAL; | |
b8295acd | 2943 | |
f5fe3247 LR |
2944 | /* |
2945 | * We can trash what CRDA provided now. | |
2946 | * However if a driver requested this specific regulatory | |
2947 | * domain we keep it for its private use | |
2948 | */ | |
2949 | tmp = get_wiphy_regdom(request_wiphy); | |
2950 | rcu_assign_pointer(request_wiphy->regd, rd); | |
2951 | rcu_free_regdom(tmp); | |
b8295acd | 2952 | |
f5fe3247 | 2953 | rd = NULL; |
b7566fc3 | 2954 | |
f5fe3247 | 2955 | reset_regdomains(false, intersected_rd); |
3e0c3ff3 | 2956 | |
f5fe3247 LR |
2957 | return 0; |
2958 | } | |
2959 | ||
01992406 LR |
2960 | static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd, |
2961 | struct regulatory_request *country_ie_request) | |
f5fe3247 LR |
2962 | { |
2963 | struct wiphy *request_wiphy; | |
b8295acd | 2964 | |
f5fe3247 LR |
2965 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
2966 | !is_unknown_alpha2(rd->alpha2)) | |
2967 | return -EINVAL; | |
b8295acd | 2968 | |
f5fe3247 LR |
2969 | /* |
2970 | * Lets only bother proceeding on the same alpha2 if the current | |
2971 | * rd is non static (it means CRDA was present and was used last) | |
2972 | * and the pending request came in from a country IE | |
2973 | */ | |
2974 | ||
2975 | if (!is_valid_rd(rd)) { | |
2976 | pr_err("Invalid regulatory domain detected:\n"); | |
2977 | print_regdomain_info(rd); | |
2978 | return -EINVAL; | |
9c96477d LR |
2979 | } |
2980 | ||
01992406 | 2981 | request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx); |
922ec58c | 2982 | if (!request_wiphy) |
f5fe3247 | 2983 | return -ENODEV; |
b2e1b302 | 2984 | |
01992406 | 2985 | if (country_ie_request->intersect) |
f5fe3247 LR |
2986 | return -EINVAL; |
2987 | ||
2988 | reset_regdomains(false, rd); | |
2989 | return 0; | |
2990 | } | |
b2e1b302 | 2991 | |
fb1fc7ad LR |
2992 | /* |
2993 | * Use this call to set the current regulatory domain. Conflicts with | |
b2e1b302 | 2994 | * multiple drivers can be ironed out later. Caller must've already |
458f4f9e | 2995 | * kmalloc'd the rd structure. |
fb1fc7ad | 2996 | */ |
c37722bd I |
2997 | int set_regdom(const struct ieee80211_regdomain *rd, |
2998 | enum ieee80211_regd_source regd_src) | |
b2e1b302 | 2999 | { |
c492db37 | 3000 | struct regulatory_request *lr; |
092008ab | 3001 | bool user_reset = false; |
b2e1b302 LR |
3002 | int r; |
3003 | ||
3b9e5aca LR |
3004 | if (!reg_is_valid_request(rd->alpha2)) { |
3005 | kfree(rd); | |
3006 | return -EINVAL; | |
3007 | } | |
3008 | ||
c37722bd | 3009 | if (regd_src == REGD_SOURCE_CRDA) |
b6863036 | 3010 | reset_crda_timeouts(); |
c37722bd | 3011 | |
c492db37 | 3012 | lr = get_last_request(); |
abc7381b | 3013 | |
b2e1b302 | 3014 | /* Note that this doesn't update the wiphys, this is done below */ |
3b9e5aca LR |
3015 | switch (lr->initiator) { |
3016 | case NL80211_REGDOM_SET_BY_CORE: | |
3017 | r = reg_set_rd_core(rd); | |
3018 | break; | |
3019 | case NL80211_REGDOM_SET_BY_USER: | |
84721d44 | 3020 | r = reg_set_rd_user(rd, lr); |
092008ab | 3021 | user_reset = true; |
84721d44 | 3022 | break; |
3b9e5aca | 3023 | case NL80211_REGDOM_SET_BY_DRIVER: |
f5fe3247 LR |
3024 | r = reg_set_rd_driver(rd, lr); |
3025 | break; | |
3b9e5aca | 3026 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
01992406 | 3027 | r = reg_set_rd_country_ie(rd, lr); |
3b9e5aca LR |
3028 | break; |
3029 | default: | |
3030 | WARN(1, "invalid initiator %d\n", lr->initiator); | |
3031 | return -EINVAL; | |
3032 | } | |
3033 | ||
d2372b31 | 3034 | if (r) { |
092008ab JD |
3035 | switch (r) { |
3036 | case -EALREADY: | |
95908535 | 3037 | reg_set_request_processed(); |
092008ab JD |
3038 | break; |
3039 | default: | |
3040 | /* Back to world regulatory in case of errors */ | |
3041 | restore_regulatory_settings(user_reset); | |
3042 | } | |
95908535 | 3043 | |
d2372b31 | 3044 | kfree(rd); |
38fd2143 | 3045 | return r; |
d2372b31 | 3046 | } |
b2e1b302 | 3047 | |
b2e1b302 | 3048 | /* This would make this whole thing pointless */ |
38fd2143 JB |
3049 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
3050 | return -EINVAL; | |
b2e1b302 LR |
3051 | |
3052 | /* update all wiphys now with the new established regulatory domain */ | |
c492db37 | 3053 | update_all_wiphy_regulatory(lr->initiator); |
b2e1b302 | 3054 | |
458f4f9e | 3055 | print_regdomain(get_cfg80211_regdom()); |
b2e1b302 | 3056 | |
c492db37 | 3057 | nl80211_send_reg_change_event(lr); |
73d54c9e | 3058 | |
b2e253cf LR |
3059 | reg_set_request_processed(); |
3060 | ||
38fd2143 | 3061 | return 0; |
b2e1b302 LR |
3062 | } |
3063 | ||
2c3e861c AN |
3064 | static int __regulatory_set_wiphy_regd(struct wiphy *wiphy, |
3065 | struct ieee80211_regdomain *rd) | |
b0d7aa59 JD |
3066 | { |
3067 | const struct ieee80211_regdomain *regd; | |
3068 | const struct ieee80211_regdomain *prev_regd; | |
3069 | struct cfg80211_registered_device *rdev; | |
3070 | ||
3071 | if (WARN_ON(!wiphy || !rd)) | |
3072 | return -EINVAL; | |
3073 | ||
3074 | if (WARN(!(wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED), | |
3075 | "wiphy should have REGULATORY_WIPHY_SELF_MANAGED\n")) | |
3076 | return -EPERM; | |
3077 | ||
3078 | if (WARN(!is_valid_rd(rd), "Invalid regulatory domain detected\n")) { | |
3079 | print_regdomain_info(rd); | |
3080 | return -EINVAL; | |
3081 | } | |
3082 | ||
3083 | regd = reg_copy_regd(rd); | |
3084 | if (IS_ERR(regd)) | |
3085 | return PTR_ERR(regd); | |
3086 | ||
3087 | rdev = wiphy_to_rdev(wiphy); | |
3088 | ||
3089 | spin_lock(®_requests_lock); | |
3090 | prev_regd = rdev->requested_regd; | |
3091 | rdev->requested_regd = regd; | |
3092 | spin_unlock(®_requests_lock); | |
3093 | ||
3094 | kfree(prev_regd); | |
2c3e861c AN |
3095 | return 0; |
3096 | } | |
3097 | ||
3098 | int regulatory_set_wiphy_regd(struct wiphy *wiphy, | |
3099 | struct ieee80211_regdomain *rd) | |
3100 | { | |
3101 | int ret = __regulatory_set_wiphy_regd(wiphy, rd); | |
3102 | ||
3103 | if (ret) | |
3104 | return ret; | |
b0d7aa59 JD |
3105 | |
3106 | schedule_work(®_work); | |
3107 | return 0; | |
3108 | } | |
3109 | EXPORT_SYMBOL(regulatory_set_wiphy_regd); | |
3110 | ||
2c3e861c AN |
3111 | int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, |
3112 | struct ieee80211_regdomain *rd) | |
3113 | { | |
3114 | int ret; | |
3115 | ||
3116 | ASSERT_RTNL(); | |
3117 | ||
3118 | ret = __regulatory_set_wiphy_regd(wiphy, rd); | |
3119 | if (ret) | |
3120 | return ret; | |
3121 | ||
3122 | /* process the request immediately */ | |
3123 | reg_process_self_managed_hints(); | |
3124 | return 0; | |
3125 | } | |
3126 | EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl); | |
3127 | ||
57b5ce07 LR |
3128 | void wiphy_regulatory_register(struct wiphy *wiphy) |
3129 | { | |
23df0b73 AN |
3130 | struct regulatory_request *lr; |
3131 | ||
b0d7aa59 JD |
3132 | /* self-managed devices ignore external hints */ |
3133 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) | |
3134 | wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS | | |
3135 | REGULATORY_COUNTRY_IE_IGNORE; | |
3136 | ||
57b5ce07 LR |
3137 | if (!reg_dev_ignore_cell_hint(wiphy)) |
3138 | reg_num_devs_support_basehint++; | |
3139 | ||
23df0b73 AN |
3140 | lr = get_last_request(); |
3141 | wiphy_update_regulatory(wiphy, lr->initiator); | |
57b5ce07 LR |
3142 | } |
3143 | ||
bfead080 | 3144 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
3f2355cb | 3145 | { |
0ad8acaf | 3146 | struct wiphy *request_wiphy = NULL; |
c492db37 | 3147 | struct regulatory_request *lr; |
761cf7ec | 3148 | |
c492db37 | 3149 | lr = get_last_request(); |
abc7381b | 3150 | |
57b5ce07 LR |
3151 | if (!reg_dev_ignore_cell_hint(wiphy)) |
3152 | reg_num_devs_support_basehint--; | |
3153 | ||
458f4f9e | 3154 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
34dd886c | 3155 | RCU_INIT_POINTER(wiphy->regd, NULL); |
0ef9ccdd | 3156 | |
c492db37 JB |
3157 | if (lr) |
3158 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); | |
806a9e39 | 3159 | |
0ef9ccdd | 3160 | if (!request_wiphy || request_wiphy != wiphy) |
38fd2143 | 3161 | return; |
0ef9ccdd | 3162 | |
c492db37 JB |
3163 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
3164 | lr->country_ie_env = ENVIRON_ANY; | |
3f2355cb LR |
3165 | } |
3166 | ||
174e0cd2 IP |
3167 | /* |
3168 | * See http://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii, for | |
3169 | * UNII band definitions | |
3170 | */ | |
3171 | int cfg80211_get_unii(int freq) | |
3172 | { | |
3173 | /* UNII-1 */ | |
3174 | if (freq >= 5150 && freq <= 5250) | |
3175 | return 0; | |
3176 | ||
3177 | /* UNII-2A */ | |
3178 | if (freq > 5250 && freq <= 5350) | |
3179 | return 1; | |
3180 | ||
3181 | /* UNII-2B */ | |
3182 | if (freq > 5350 && freq <= 5470) | |
3183 | return 2; | |
3184 | ||
3185 | /* UNII-2C */ | |
3186 | if (freq > 5470 && freq <= 5725) | |
3187 | return 3; | |
3188 | ||
3189 | /* UNII-3 */ | |
3190 | if (freq > 5725 && freq <= 5825) | |
3191 | return 4; | |
3192 | ||
3193 | return -EINVAL; | |
3194 | } | |
3195 | ||
c8866e55 IP |
3196 | bool regulatory_indoor_allowed(void) |
3197 | { | |
3198 | return reg_is_indoor; | |
3199 | } | |
3200 | ||
2fcc9f73 | 3201 | int __init regulatory_init(void) |
b2e1b302 | 3202 | { |
bcf4f99b | 3203 | int err = 0; |
734366de | 3204 | |
b2e1b302 LR |
3205 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); |
3206 | if (IS_ERR(reg_pdev)) | |
3207 | return PTR_ERR(reg_pdev); | |
734366de | 3208 | |
fe33eb39 | 3209 | spin_lock_init(®_requests_lock); |
e38f8a7a | 3210 | spin_lock_init(®_pending_beacons_lock); |
05050753 | 3211 | spin_lock_init(®_indoor_lock); |
fe33eb39 | 3212 | |
80007efe LR |
3213 | reg_regdb_size_check(); |
3214 | ||
458f4f9e | 3215 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); |
734366de | 3216 | |
09d989d1 LR |
3217 | user_alpha2[0] = '9'; |
3218 | user_alpha2[1] = '7'; | |
3219 | ||
ae9e4b0d | 3220 | /* We always try to get an update for the static regdomain */ |
458f4f9e | 3221 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
ba25c141 | 3222 | if (err) { |
bcf4f99b LR |
3223 | if (err == -ENOMEM) |
3224 | return err; | |
3225 | /* | |
3226 | * N.B. kobject_uevent_env() can fail mainly for when we're out | |
3227 | * memory which is handled and propagated appropriately above | |
3228 | * but it can also fail during a netlink_broadcast() or during | |
3229 | * early boot for call_usermodehelper(). For now treat these | |
3230 | * errors as non-fatal. | |
3231 | */ | |
e9c0268f | 3232 | pr_err("kobject_uevent_env() was unable to call CRDA during init\n"); |
bcf4f99b | 3233 | } |
734366de | 3234 | |
ae9e4b0d LR |
3235 | /* |
3236 | * Finally, if the user set the module parameter treat it | |
3237 | * as a user hint. | |
3238 | */ | |
3239 | if (!is_world_regdom(ieee80211_regdom)) | |
57b5ce07 LR |
3240 | regulatory_hint_user(ieee80211_regdom, |
3241 | NL80211_USER_REG_HINT_USER); | |
ae9e4b0d | 3242 | |
b2e1b302 LR |
3243 | return 0; |
3244 | } | |
3245 | ||
1a919318 | 3246 | void regulatory_exit(void) |
b2e1b302 | 3247 | { |
fe33eb39 | 3248 | struct regulatory_request *reg_request, *tmp; |
e38f8a7a | 3249 | struct reg_beacon *reg_beacon, *btmp; |
fe33eb39 LR |
3250 | |
3251 | cancel_work_sync(®_work); | |
b6863036 | 3252 | cancel_crda_timeout_sync(); |
ad932f04 | 3253 | cancel_delayed_work_sync(®_check_chans); |
fe33eb39 | 3254 | |
9027b149 | 3255 | /* Lock to suppress warnings */ |
38fd2143 | 3256 | rtnl_lock(); |
379b82f4 | 3257 | reset_regdomains(true, NULL); |
38fd2143 | 3258 | rtnl_unlock(); |
734366de | 3259 | |
58ebacc6 | 3260 | dev_set_uevent_suppress(®_pdev->dev, true); |
f6037d09 | 3261 | |
b2e1b302 | 3262 | platform_device_unregister(reg_pdev); |
734366de | 3263 | |
fea9bced JB |
3264 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
3265 | list_del(®_beacon->list); | |
3266 | kfree(reg_beacon); | |
e38f8a7a | 3267 | } |
e38f8a7a | 3268 | |
fea9bced JB |
3269 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
3270 | list_del(®_beacon->list); | |
3271 | kfree(reg_beacon); | |
e38f8a7a LR |
3272 | } |
3273 | ||
fea9bced JB |
3274 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
3275 | list_del(®_request->list); | |
3276 | kfree(reg_request); | |
fe33eb39 | 3277 | } |
8318d78a | 3278 | } |