Commit | Line | Data |
---|---|---|
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 |
4e0854a7 | 7 | * Copyright 2017 Intel Deutschland GmbH |
51d62f2f | 8 | * Copyright (C) 2018 - 2021 Intel Corporation |
8318d78a | 9 | * |
3b77d5ec LR |
10 | * Permission to use, copy, modify, and/or distribute this software for any |
11 | * purpose with or without fee is hereby granted, provided that the above | |
12 | * copyright notice and this permission notice appear in all copies. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
15 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
16 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
17 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
18 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
19 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
20 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
8318d78a JB |
21 | */ |
22 | ||
3b77d5ec | 23 | |
b2e1b302 LR |
24 | /** |
25 | * DOC: Wireless regulatory infrastructure | |
8318d78a JB |
26 | * |
27 | * The usual implementation is for a driver to read a device EEPROM to | |
28 | * determine which regulatory domain it should be operating under, then | |
29 | * looking up the allowable channels in a driver-local table and finally | |
30 | * registering those channels in the wiphy structure. | |
31 | * | |
b2e1b302 LR |
32 | * Another set of compliance enforcement is for drivers to use their |
33 | * own compliance limits which can be stored on the EEPROM. The host | |
34 | * driver or firmware may ensure these are used. | |
35 | * | |
36 | * In addition to all this we provide an extra layer of regulatory | |
37 | * conformance. For drivers which do not have any regulatory | |
38 | * information CRDA provides the complete regulatory solution. | |
39 | * For others it provides a community effort on further restrictions | |
40 | * to enhance compliance. | |
41 | * | |
42 | * Note: When number of rules --> infinity we will not be able to | |
43 | * index on alpha2 any more, instead we'll probably have to | |
44 | * rely on some SHA1 checksum of the regdomain for example. | |
45 | * | |
8318d78a | 46 | */ |
e9c0268f JP |
47 | |
48 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
49 | ||
8318d78a | 50 | #include <linux/kernel.h> |
bc3b2d7f | 51 | #include <linux/export.h> |
5a0e3ad6 | 52 | #include <linux/slab.h> |
b2e1b302 | 53 | #include <linux/list.h> |
c61029c7 | 54 | #include <linux/ctype.h> |
b2e1b302 LR |
55 | #include <linux/nl80211.h> |
56 | #include <linux/platform_device.h> | |
90a53e44 | 57 | #include <linux/verification.h> |
d9b93842 | 58 | #include <linux/moduleparam.h> |
007f6c5e | 59 | #include <linux/firmware.h> |
b2e1b302 | 60 | #include <net/cfg80211.h> |
8318d78a | 61 | #include "core.h" |
b2e1b302 | 62 | #include "reg.h" |
ad932f04 | 63 | #include "rdev-ops.h" |
73d54c9e | 64 | #include "nl80211.h" |
8318d78a | 65 | |
ad932f04 AN |
66 | /* |
67 | * Grace period we give before making sure all current interfaces reside on | |
68 | * channels allowed by the current regulatory domain. | |
69 | */ | |
70 | #define REG_ENFORCE_GRACE_MS 60000 | |
71 | ||
52616f2b IP |
72 | /** |
73 | * enum reg_request_treatment - regulatory request treatment | |
74 | * | |
75 | * @REG_REQ_OK: continue processing the regulatory request | |
76 | * @REG_REQ_IGNORE: ignore the regulatory request | |
77 | * @REG_REQ_INTERSECT: the regulatory domain resulting from this request should | |
78 | * be intersected with the current one. | |
79 | * @REG_REQ_ALREADY_SET: the regulatory request will not change the current | |
80 | * regulatory settings, and no further processing is required. | |
52616f2b | 81 | */ |
2f92212b JB |
82 | enum reg_request_treatment { |
83 | REG_REQ_OK, | |
84 | REG_REQ_IGNORE, | |
85 | REG_REQ_INTERSECT, | |
86 | REG_REQ_ALREADY_SET, | |
87 | }; | |
88 | ||
a042994d LR |
89 | static struct regulatory_request core_request_world = { |
90 | .initiator = NL80211_REGDOM_SET_BY_CORE, | |
91 | .alpha2[0] = '0', | |
92 | .alpha2[1] = '0', | |
93 | .intersect = false, | |
94 | .processed = true, | |
95 | .country_ie_env = ENVIRON_ANY, | |
96 | }; | |
97 | ||
38fd2143 JB |
98 | /* |
99 | * Receipt of information from last regulatory request, | |
100 | * protected by RTNL (and can be accessed with RCU protection) | |
101 | */ | |
c492db37 | 102 | static struct regulatory_request __rcu *last_request = |
cec3f0ed | 103 | (void __force __rcu *)&core_request_world; |
734366de | 104 | |
007f6c5e | 105 | /* To trigger userspace events and load firmware */ |
b2e1b302 | 106 | static struct platform_device *reg_pdev; |
8318d78a | 107 | |
fb1fc7ad LR |
108 | /* |
109 | * Central wireless core regulatory domains, we only need two, | |
734366de | 110 | * the current one and a world regulatory domain in case we have no |
e8da2bb4 | 111 | * information to give us an alpha2. |
38fd2143 | 112 | * (protected by RTNL, can be read under RCU) |
fb1fc7ad | 113 | */ |
458f4f9e | 114 | const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
734366de | 115 | |
57b5ce07 LR |
116 | /* |
117 | * Number of devices that registered to the core | |
118 | * that support cellular base station regulatory hints | |
38fd2143 | 119 | * (protected by RTNL) |
57b5ce07 LR |
120 | */ |
121 | static int reg_num_devs_support_basehint; | |
122 | ||
52616f2b IP |
123 | /* |
124 | * State variable indicating if the platform on which the devices | |
125 | * are attached is operating in an indoor environment. The state variable | |
126 | * is relevant for all registered devices. | |
52616f2b IP |
127 | */ |
128 | static bool reg_is_indoor; | |
05050753 I |
129 | static spinlock_t reg_indoor_lock; |
130 | ||
131 | /* Used to track the userspace process controlling the indoor setting */ | |
132 | static u32 reg_is_indoor_portid; | |
52616f2b | 133 | |
e646a025 JB |
134 | static void restore_regulatory_settings(bool reset_user, bool cached); |
135 | static void print_regdomain(const struct ieee80211_regdomain *rd); | |
c37722bd | 136 | |
458f4f9e JB |
137 | static const struct ieee80211_regdomain *get_cfg80211_regdom(void) |
138 | { | |
5bf16a11 | 139 | return rcu_dereference_rtnl(cfg80211_regdomain); |
458f4f9e JB |
140 | } |
141 | ||
51d62f2f IP |
142 | /* |
143 | * Returns the regulatory domain associated with the wiphy. | |
144 | * | |
145 | * Requires either RTNL or RCU protection | |
146 | */ | |
ad30ca2c | 147 | const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) |
458f4f9e | 148 | { |
5bf16a11 | 149 | return rcu_dereference_rtnl(wiphy->regd); |
458f4f9e JB |
150 | } |
151 | ||
3ef121b5 LR |
152 | static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region) |
153 | { | |
154 | switch (dfs_region) { | |
155 | case NL80211_DFS_UNSET: | |
156 | return "unset"; | |
157 | case NL80211_DFS_FCC: | |
158 | return "FCC"; | |
159 | case NL80211_DFS_ETSI: | |
160 | return "ETSI"; | |
161 | case NL80211_DFS_JP: | |
162 | return "JP"; | |
163 | } | |
164 | return "Unknown"; | |
165 | } | |
166 | ||
6c474799 LR |
167 | enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy) |
168 | { | |
169 | const struct ieee80211_regdomain *regd = NULL; | |
170 | const struct ieee80211_regdomain *wiphy_regd = NULL; | |
171 | ||
172 | regd = get_cfg80211_regdom(); | |
173 | if (!wiphy) | |
174 | goto out; | |
175 | ||
176 | wiphy_regd = get_wiphy_regdom(wiphy); | |
177 | if (!wiphy_regd) | |
178 | goto out; | |
179 | ||
180 | if (wiphy_regd->dfs_region == regd->dfs_region) | |
181 | goto out; | |
182 | ||
c799ba6e JB |
183 | pr_debug("%s: device specific dfs_region (%s) disagrees with cfg80211's 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)); | |
6c474799 LR |
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 | 233 | /* IEEE 802.11b/g, channels 12..13. */ |
c3826807 JB |
234 | REG_RULE(2467-10, 2472+10, 20, 6, 20, |
235 | NL80211_RRF_NO_IR | NL80211_RRF_AUTO_BW), | |
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 */ | |
c3826807 JB |
242 | REG_RULE(5180-10, 5240+10, 80, 6, 20, |
243 | NL80211_RRF_NO_IR | | |
244 | NL80211_RRF_AUTO_BW), | |
3fc71f77 | 245 | |
131a19bc | 246 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
c3826807 | 247 | REG_RULE(5260-10, 5320+10, 80, 6, 20, |
8fe02e16 | 248 | NL80211_RRF_NO_IR | |
c3826807 | 249 | NL80211_RRF_AUTO_BW | |
131a19bc JB |
250 | NL80211_RRF_DFS), |
251 | ||
252 | /* IEEE 802.11a, channel 100..144 - DFS required */ | |
253 | REG_RULE(5500-10, 5720+10, 160, 6, 20, | |
8fe02e16 | 254 | NL80211_RRF_NO_IR | |
131a19bc | 255 | NL80211_RRF_DFS), |
3fc71f77 LR |
256 | |
257 | /* IEEE 802.11a, channel 149..165 */ | |
8ab9d85c | 258 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
8fe02e16 | 259 | NL80211_RRF_NO_IR), |
90cdc6df | 260 | |
8047d261 | 261 | /* IEEE 802.11ad (60GHz), channels 1..3 */ |
90cdc6df | 262 | REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0), |
734366de JB |
263 | } |
264 | }; | |
265 | ||
38fd2143 | 266 | /* protected by RTNL */ |
a3d2eaf0 JB |
267 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
268 | &world_regdom; | |
734366de | 269 | |
6ee7d330 | 270 | static char *ieee80211_regdom = "00"; |
09d989d1 | 271 | static char user_alpha2[2]; |
e646a025 | 272 | static const struct ieee80211_regdomain *cfg80211_user_regdom; |
6ee7d330 | 273 | |
734366de JB |
274 | module_param(ieee80211_regdom, charp, 0444); |
275 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); | |
276 | ||
c888393b | 277 | static void reg_free_request(struct regulatory_request *request) |
5ad6ef5e | 278 | { |
d34265a3 JB |
279 | if (request == &core_request_world) |
280 | return; | |
281 | ||
c888393b AN |
282 | if (request != get_last_request()) |
283 | kfree(request); | |
284 | } | |
285 | ||
286 | static void reg_free_last_request(void) | |
287 | { | |
288 | struct regulatory_request *lr = get_last_request(); | |
289 | ||
5ad6ef5e LR |
290 | if (lr != &core_request_world && lr) |
291 | kfree_rcu(lr, rcu_head); | |
292 | } | |
293 | ||
05f1a3ea LR |
294 | static void reg_update_last_request(struct regulatory_request *request) |
295 | { | |
255e25b0 LR |
296 | struct regulatory_request *lr; |
297 | ||
298 | lr = get_last_request(); | |
299 | if (lr == request) | |
300 | return; | |
301 | ||
c888393b | 302 | reg_free_last_request(); |
05f1a3ea LR |
303 | rcu_assign_pointer(last_request, request); |
304 | } | |
305 | ||
379b82f4 JB |
306 | static void reset_regdomains(bool full_reset, |
307 | const struct ieee80211_regdomain *new_regdom) | |
734366de | 308 | { |
458f4f9e JB |
309 | const struct ieee80211_regdomain *r; |
310 | ||
38fd2143 | 311 | ASSERT_RTNL(); |
e8da2bb4 | 312 | |
458f4f9e JB |
313 | r = get_cfg80211_regdom(); |
314 | ||
942b25cf | 315 | /* avoid freeing static information or freeing something twice */ |
458f4f9e JB |
316 | if (r == cfg80211_world_regdom) |
317 | r = NULL; | |
942b25cf JB |
318 | if (cfg80211_world_regdom == &world_regdom) |
319 | cfg80211_world_regdom = NULL; | |
458f4f9e JB |
320 | if (r == &world_regdom) |
321 | r = NULL; | |
942b25cf | 322 | |
458f4f9e JB |
323 | rcu_free_regdom(r); |
324 | rcu_free_regdom(cfg80211_world_regdom); | |
734366de | 325 | |
a3d2eaf0 | 326 | cfg80211_world_regdom = &world_regdom; |
458f4f9e | 327 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
a042994d LR |
328 | |
329 | if (!full_reset) | |
330 | return; | |
331 | ||
05f1a3ea | 332 | reg_update_last_request(&core_request_world); |
734366de JB |
333 | } |
334 | ||
fb1fc7ad LR |
335 | /* |
336 | * Dynamic world regulatory domain requested by the wireless | |
337 | * core upon initialization | |
338 | */ | |
a3d2eaf0 | 339 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
734366de | 340 | { |
c492db37 | 341 | struct regulatory_request *lr; |
734366de | 342 | |
c492db37 JB |
343 | lr = get_last_request(); |
344 | ||
345 | WARN_ON(!lr); | |
734366de | 346 | |
379b82f4 | 347 | reset_regdomains(false, rd); |
734366de JB |
348 | |
349 | cfg80211_world_regdom = rd; | |
734366de | 350 | } |
734366de | 351 | |
a3d2eaf0 | 352 | bool is_world_regdom(const char *alpha2) |
b2e1b302 LR |
353 | { |
354 | if (!alpha2) | |
355 | return false; | |
1a919318 | 356 | return alpha2[0] == '0' && alpha2[1] == '0'; |
b2e1b302 | 357 | } |
8318d78a | 358 | |
a3d2eaf0 | 359 | static bool is_alpha2_set(const char *alpha2) |
b2e1b302 LR |
360 | { |
361 | if (!alpha2) | |
362 | return false; | |
1a919318 | 363 | return alpha2[0] && alpha2[1]; |
b2e1b302 | 364 | } |
8318d78a | 365 | |
a3d2eaf0 | 366 | static bool is_unknown_alpha2(const char *alpha2) |
b2e1b302 LR |
367 | { |
368 | if (!alpha2) | |
369 | return false; | |
fb1fc7ad LR |
370 | /* |
371 | * Special case where regulatory domain was built by driver | |
372 | * but a specific alpha2 cannot be determined | |
373 | */ | |
1a919318 | 374 | return alpha2[0] == '9' && alpha2[1] == '9'; |
b2e1b302 | 375 | } |
8318d78a | 376 | |
3f2355cb LR |
377 | static bool is_intersected_alpha2(const char *alpha2) |
378 | { | |
379 | if (!alpha2) | |
380 | return false; | |
fb1fc7ad LR |
381 | /* |
382 | * Special case where regulatory domain is the | |
3f2355cb | 383 | * result of an intersection between two regulatory domain |
fb1fc7ad LR |
384 | * structures |
385 | */ | |
1a919318 | 386 | return alpha2[0] == '9' && alpha2[1] == '8'; |
3f2355cb LR |
387 | } |
388 | ||
a3d2eaf0 | 389 | static bool is_an_alpha2(const char *alpha2) |
b2e1b302 LR |
390 | { |
391 | if (!alpha2) | |
392 | return false; | |
1a919318 | 393 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
b2e1b302 | 394 | } |
8318d78a | 395 | |
a3d2eaf0 | 396 | static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y) |
b2e1b302 LR |
397 | { |
398 | if (!alpha2_x || !alpha2_y) | |
399 | return false; | |
1a919318 | 400 | return alpha2_x[0] == alpha2_y[0] && alpha2_x[1] == alpha2_y[1]; |
b2e1b302 LR |
401 | } |
402 | ||
69b1572b | 403 | static bool regdom_changes(const char *alpha2) |
b2e1b302 | 404 | { |
458f4f9e | 405 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
761cf7ec | 406 | |
458f4f9e | 407 | if (!r) |
b2e1b302 | 408 | return true; |
458f4f9e | 409 | return !alpha2_equal(r->alpha2, alpha2); |
b2e1b302 LR |
410 | } |
411 | ||
09d989d1 LR |
412 | /* |
413 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets | |
414 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER | |
415 | * has ever been issued. | |
416 | */ | |
417 | static bool is_user_regdom_saved(void) | |
418 | { | |
419 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') | |
420 | return false; | |
421 | ||
422 | /* This would indicate a mistake on the design */ | |
1a919318 | 423 | if (WARN(!is_world_regdom(user_alpha2) && !is_an_alpha2(user_alpha2), |
09d989d1 | 424 | "Unexpected user alpha2: %c%c\n", |
1a919318 | 425 | user_alpha2[0], user_alpha2[1])) |
09d989d1 LR |
426 | return false; |
427 | ||
428 | return true; | |
429 | } | |
430 | ||
e9763c3c JB |
431 | static const struct ieee80211_regdomain * |
432 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) | |
3b377ea9 JL |
433 | { |
434 | struct ieee80211_regdomain *regd; | |
3b377ea9 JL |
435 | unsigned int i; |
436 | ||
9f8c7136 GS |
437 | regd = kzalloc(struct_size(regd, reg_rules, src_regd->n_reg_rules), |
438 | GFP_KERNEL); | |
3b377ea9 | 439 | if (!regd) |
e9763c3c | 440 | return ERR_PTR(-ENOMEM); |
3b377ea9 JL |
441 | |
442 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); | |
443 | ||
38cb87ee | 444 | for (i = 0; i < src_regd->n_reg_rules; i++) |
3b377ea9 | 445 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], |
e9763c3c | 446 | sizeof(struct ieee80211_reg_rule)); |
3b377ea9 | 447 | |
e9763c3c | 448 | return regd; |
3b377ea9 JL |
449 | } |
450 | ||
e646a025 JB |
451 | static void cfg80211_save_user_regdom(const struct ieee80211_regdomain *rd) |
452 | { | |
453 | ASSERT_RTNL(); | |
454 | ||
455 | if (!IS_ERR(cfg80211_user_regdom)) | |
456 | kfree(cfg80211_user_regdom); | |
457 | cfg80211_user_regdom = reg_copy_regd(rd); | |
458 | } | |
459 | ||
c7d319e5 | 460 | struct reg_regdb_apply_request { |
3b377ea9 | 461 | struct list_head list; |
c7d319e5 | 462 | const struct ieee80211_regdomain *regdom; |
3b377ea9 JL |
463 | }; |
464 | ||
c7d319e5 JB |
465 | static LIST_HEAD(reg_regdb_apply_list); |
466 | static DEFINE_MUTEX(reg_regdb_apply_mutex); | |
3b377ea9 | 467 | |
c7d319e5 | 468 | static void reg_regdb_apply(struct work_struct *work) |
3b377ea9 | 469 | { |
c7d319e5 | 470 | struct reg_regdb_apply_request *request; |
a85d0d7f | 471 | |
5fe231e8 | 472 | rtnl_lock(); |
3b377ea9 | 473 | |
c7d319e5 JB |
474 | mutex_lock(®_regdb_apply_mutex); |
475 | while (!list_empty(®_regdb_apply_list)) { | |
476 | request = list_first_entry(®_regdb_apply_list, | |
477 | struct reg_regdb_apply_request, | |
3b377ea9 JL |
478 | list); |
479 | list_del(&request->list); | |
480 | ||
c7d319e5 | 481 | set_regdom(request->regdom, REGD_SOURCE_INTERNAL_DB); |
3b377ea9 JL |
482 | kfree(request); |
483 | } | |
c7d319e5 | 484 | mutex_unlock(®_regdb_apply_mutex); |
a85d0d7f | 485 | |
5fe231e8 | 486 | rtnl_unlock(); |
3b377ea9 JL |
487 | } |
488 | ||
c7d319e5 | 489 | static DECLARE_WORK(reg_regdb_work, reg_regdb_apply); |
3b377ea9 | 490 | |
007f6c5e | 491 | static int reg_schedule_apply(const struct ieee80211_regdomain *regdom) |
3b377ea9 | 492 | { |
c7d319e5 | 493 | struct reg_regdb_apply_request *request; |
3b377ea9 | 494 | |
c7d319e5 | 495 | request = kzalloc(sizeof(struct reg_regdb_apply_request), GFP_KERNEL); |
007f6c5e JB |
496 | if (!request) { |
497 | kfree(regdom); | |
c7d319e5 JB |
498 | return -ENOMEM; |
499 | } | |
3b377ea9 | 500 | |
007f6c5e JB |
501 | request->regdom = regdom; |
502 | ||
c7d319e5 JB |
503 | mutex_lock(®_regdb_apply_mutex); |
504 | list_add_tail(&request->list, ®_regdb_apply_list); | |
505 | mutex_unlock(®_regdb_apply_mutex); | |
3b377ea9 JL |
506 | |
507 | schedule_work(®_regdb_work); | |
c7d319e5 | 508 | return 0; |
3b377ea9 | 509 | } |
80007efe | 510 | |
b6863036 JB |
511 | #ifdef CONFIG_CFG80211_CRDA_SUPPORT |
512 | /* Max number of consecutive attempts to communicate with CRDA */ | |
513 | #define REG_MAX_CRDA_TIMEOUTS 10 | |
514 | ||
515 | static u32 reg_crda_timeouts; | |
516 | ||
517 | static void crda_timeout_work(struct work_struct *work); | |
518 | static DECLARE_DELAYED_WORK(crda_timeout, crda_timeout_work); | |
519 | ||
520 | static void crda_timeout_work(struct work_struct *work) | |
521 | { | |
c799ba6e | 522 | pr_debug("Timeout while waiting for CRDA to reply, restoring regulatory settings\n"); |
b6863036 JB |
523 | rtnl_lock(); |
524 | reg_crda_timeouts++; | |
e646a025 | 525 | restore_regulatory_settings(true, false); |
b6863036 JB |
526 | rtnl_unlock(); |
527 | } | |
528 | ||
529 | static void cancel_crda_timeout(void) | |
530 | { | |
531 | cancel_delayed_work(&crda_timeout); | |
532 | } | |
533 | ||
534 | static void cancel_crda_timeout_sync(void) | |
535 | { | |
536 | cancel_delayed_work_sync(&crda_timeout); | |
537 | } | |
538 | ||
539 | static void reset_crda_timeouts(void) | |
540 | { | |
541 | reg_crda_timeouts = 0; | |
542 | } | |
543 | ||
fb1fc7ad LR |
544 | /* |
545 | * This lets us keep regulatory code which is updated on a regulatory | |
1226d258 | 546 | * basis in userspace. |
fb1fc7ad | 547 | */ |
b2e1b302 LR |
548 | static int call_crda(const char *alpha2) |
549 | { | |
1226d258 JB |
550 | char country[12]; |
551 | char *env[] = { country, NULL }; | |
c7d319e5 | 552 | int ret; |
1226d258 JB |
553 | |
554 | snprintf(country, sizeof(country), "COUNTRY=%c%c", | |
555 | alpha2[0], alpha2[1]); | |
556 | ||
c37722bd | 557 | if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) { |
042ab5fc | 558 | pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n"); |
c37722bd I |
559 | return -EINVAL; |
560 | } | |
561 | ||
b2e1b302 | 562 | if (!is_world_regdom((char *) alpha2)) |
042ab5fc | 563 | pr_debug("Calling CRDA for country: %c%c\n", |
c799ba6e | 564 | alpha2[0], alpha2[1]); |
b2e1b302 | 565 | else |
042ab5fc | 566 | pr_debug("Calling CRDA to update world regulatory domain\n"); |
b2e1b302 | 567 | |
c7d319e5 JB |
568 | ret = kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, env); |
569 | if (ret) | |
570 | return ret; | |
571 | ||
572 | queue_delayed_work(system_power_efficient_wq, | |
b6863036 | 573 | &crda_timeout, msecs_to_jiffies(3142)); |
c7d319e5 | 574 | return 0; |
b2e1b302 | 575 | } |
b6863036 JB |
576 | #else |
577 | static inline void cancel_crda_timeout(void) {} | |
578 | static inline void cancel_crda_timeout_sync(void) {} | |
579 | static inline void reset_crda_timeouts(void) {} | |
580 | static inline int call_crda(const char *alpha2) | |
581 | { | |
582 | return -ENODATA; | |
583 | } | |
584 | #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ | |
b2e1b302 | 585 | |
007f6c5e JB |
586 | /* code to directly load a firmware database through request_firmware */ |
587 | static const struct fwdb_header *regdb; | |
588 | ||
589 | struct fwdb_country { | |
590 | u8 alpha2[2]; | |
591 | __be16 coll_ptr; | |
592 | /* this struct cannot be extended */ | |
593 | } __packed __aligned(4); | |
594 | ||
595 | struct fwdb_collection { | |
596 | u8 len; | |
597 | u8 n_rules; | |
598 | u8 dfs_region; | |
599 | /* no optional data yet */ | |
600 | /* aligned to 2, then followed by __be16 array of rule pointers */ | |
601 | } __packed __aligned(4); | |
602 | ||
603 | enum fwdb_flags { | |
604 | FWDB_FLAG_NO_OFDM = BIT(0), | |
605 | FWDB_FLAG_NO_OUTDOOR = BIT(1), | |
606 | FWDB_FLAG_DFS = BIT(2), | |
607 | FWDB_FLAG_NO_IR = BIT(3), | |
608 | FWDB_FLAG_AUTO_BW = BIT(4), | |
609 | }; | |
610 | ||
230ebaa1 HD |
611 | struct fwdb_wmm_ac { |
612 | u8 ecw; | |
613 | u8 aifsn; | |
614 | __be16 cot; | |
615 | } __packed; | |
616 | ||
617 | struct fwdb_wmm_rule { | |
618 | struct fwdb_wmm_ac client[IEEE80211_NUM_ACS]; | |
619 | struct fwdb_wmm_ac ap[IEEE80211_NUM_ACS]; | |
620 | } __packed; | |
621 | ||
007f6c5e JB |
622 | struct fwdb_rule { |
623 | u8 len; | |
624 | u8 flags; | |
625 | __be16 max_eirp; | |
626 | __be32 start, end, max_bw; | |
627 | /* start of optional data */ | |
628 | __be16 cac_timeout; | |
230ebaa1 | 629 | __be16 wmm_ptr; |
007f6c5e JB |
630 | } __packed __aligned(4); |
631 | ||
632 | #define FWDB_MAGIC 0x52474442 | |
633 | #define FWDB_VERSION 20 | |
634 | ||
635 | struct fwdb_header { | |
636 | __be32 magic; | |
637 | __be32 version; | |
638 | struct fwdb_country country[]; | |
639 | } __packed __aligned(4); | |
640 | ||
230ebaa1 HD |
641 | static int ecw2cw(int ecw) |
642 | { | |
643 | return (1 << ecw) - 1; | |
644 | } | |
645 | ||
646 | static bool valid_wmm(struct fwdb_wmm_rule *rule) | |
647 | { | |
648 | struct fwdb_wmm_ac *ac = (struct fwdb_wmm_ac *)rule; | |
649 | int i; | |
650 | ||
651 | for (i = 0; i < IEEE80211_NUM_ACS * 2; i++) { | |
652 | u16 cw_min = ecw2cw((ac[i].ecw & 0xf0) >> 4); | |
653 | u16 cw_max = ecw2cw(ac[i].ecw & 0x0f); | |
654 | u8 aifsn = ac[i].aifsn; | |
655 | ||
656 | if (cw_min >= cw_max) | |
657 | return false; | |
658 | ||
659 | if (aifsn < 1) | |
660 | return false; | |
661 | } | |
662 | ||
663 | return true; | |
664 | } | |
665 | ||
007f6c5e JB |
666 | static bool valid_rule(const u8 *data, unsigned int size, u16 rule_ptr) |
667 | { | |
668 | struct fwdb_rule *rule = (void *)(data + (rule_ptr << 2)); | |
669 | ||
670 | if ((u8 *)rule + sizeof(rule->len) > data + size) | |
671 | return false; | |
672 | ||
673 | /* mandatory fields */ | |
674 | if (rule->len < offsetofend(struct fwdb_rule, max_bw)) | |
675 | return false; | |
230ebaa1 HD |
676 | if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr)) { |
677 | u32 wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2; | |
678 | struct fwdb_wmm_rule *wmm; | |
679 | ||
680 | if (wmm_ptr + sizeof(struct fwdb_wmm_rule) > size) | |
681 | return false; | |
007f6c5e | 682 | |
230ebaa1 HD |
683 | wmm = (void *)(data + wmm_ptr); |
684 | ||
685 | if (!valid_wmm(wmm)) | |
686 | return false; | |
687 | } | |
007f6c5e JB |
688 | return true; |
689 | } | |
690 | ||
691 | static bool valid_country(const u8 *data, unsigned int size, | |
692 | const struct fwdb_country *country) | |
693 | { | |
694 | unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2; | |
695 | struct fwdb_collection *coll = (void *)(data + ptr); | |
696 | __be16 *rules_ptr; | |
697 | unsigned int i; | |
698 | ||
699 | /* make sure we can read len/n_rules */ | |
700 | if ((u8 *)coll + offsetofend(typeof(*coll), n_rules) > data + size) | |
701 | return false; | |
702 | ||
703 | /* make sure base struct and all rules fit */ | |
704 | if ((u8 *)coll + ALIGN(coll->len, 2) + | |
705 | (coll->n_rules * 2) > data + size) | |
706 | return false; | |
707 | ||
708 | /* mandatory fields must exist */ | |
709 | if (coll->len < offsetofend(struct fwdb_collection, dfs_region)) | |
710 | return false; | |
711 | ||
712 | rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2)); | |
713 | ||
714 | for (i = 0; i < coll->n_rules; i++) { | |
715 | u16 rule_ptr = be16_to_cpu(rules_ptr[i]); | |
716 | ||
717 | if (!valid_rule(data, size, rule_ptr)) | |
718 | return false; | |
719 | } | |
720 | ||
721 | return true; | |
722 | } | |
723 | ||
90a53e44 JB |
724 | #ifdef CONFIG_CFG80211_REQUIRE_SIGNED_REGDB |
725 | static struct key *builtin_regdb_keys; | |
726 | ||
727 | static void __init load_keys_from_buffer(const u8 *p, unsigned int buflen) | |
728 | { | |
729 | const u8 *end = p + buflen; | |
730 | size_t plen; | |
731 | key_ref_t key; | |
732 | ||
733 | while (p < end) { | |
734 | /* Each cert begins with an ASN.1 SEQUENCE tag and must be more | |
735 | * than 256 bytes in size. | |
736 | */ | |
737 | if (end - p < 4) | |
738 | goto dodgy_cert; | |
739 | if (p[0] != 0x30 && | |
740 | p[1] != 0x82) | |
741 | goto dodgy_cert; | |
742 | plen = (p[2] << 8) | p[3]; | |
743 | plen += 4; | |
744 | if (plen > end - p) | |
745 | goto dodgy_cert; | |
746 | ||
747 | key = key_create_or_update(make_key_ref(builtin_regdb_keys, 1), | |
748 | "asymmetric", NULL, p, plen, | |
028db3e2 LT |
749 | ((KEY_POS_ALL & ~KEY_POS_SETATTR) | |
750 | KEY_USR_VIEW | KEY_USR_READ), | |
90a53e44 JB |
751 | KEY_ALLOC_NOT_IN_QUOTA | |
752 | KEY_ALLOC_BUILT_IN | | |
753 | KEY_ALLOC_BYPASS_RESTRICTION); | |
754 | if (IS_ERR(key)) { | |
755 | pr_err("Problem loading in-kernel X.509 certificate (%ld)\n", | |
756 | PTR_ERR(key)); | |
757 | } else { | |
758 | pr_notice("Loaded X.509 cert '%s'\n", | |
759 | key_ref_to_ptr(key)->description); | |
760 | key_ref_put(key); | |
761 | } | |
762 | p += plen; | |
763 | } | |
764 | ||
765 | return; | |
766 | ||
767 | dodgy_cert: | |
768 | pr_err("Problem parsing in-kernel X.509 certificate list\n"); | |
769 | } | |
770 | ||
771 | static int __init load_builtin_regdb_keys(void) | |
772 | { | |
773 | builtin_regdb_keys = | |
774 | keyring_alloc(".builtin_regdb_keys", | |
775 | KUIDT_INIT(0), KGIDT_INIT(0), current_cred(), | |
028db3e2 LT |
776 | ((KEY_POS_ALL & ~KEY_POS_SETATTR) | |
777 | KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH), | |
90a53e44 JB |
778 | KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL); |
779 | if (IS_ERR(builtin_regdb_keys)) | |
780 | return PTR_ERR(builtin_regdb_keys); | |
781 | ||
782 | pr_notice("Loading compiled-in X.509 certificates for regulatory database\n"); | |
783 | ||
784 | #ifdef CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS | |
785 | load_keys_from_buffer(shipped_regdb_certs, shipped_regdb_certs_len); | |
786 | #endif | |
88230ef1 | 787 | #ifdef CONFIG_CFG80211_EXTRA_REGDB_KEYDIR |
90a53e44 JB |
788 | if (CONFIG_CFG80211_EXTRA_REGDB_KEYDIR[0] != '\0') |
789 | load_keys_from_buffer(extra_regdb_certs, extra_regdb_certs_len); | |
790 | #endif | |
791 | ||
792 | return 0; | |
793 | } | |
794 | ||
795 | static bool regdb_has_valid_signature(const u8 *data, unsigned int size) | |
796 | { | |
797 | const struct firmware *sig; | |
798 | bool result; | |
799 | ||
800 | if (request_firmware(&sig, "regulatory.db.p7s", ®_pdev->dev)) | |
801 | return false; | |
802 | ||
803 | result = verify_pkcs7_signature(data, size, sig->data, sig->size, | |
804 | builtin_regdb_keys, | |
805 | VERIFYING_UNSPECIFIED_SIGNATURE, | |
806 | NULL, NULL) == 0; | |
807 | ||
808 | release_firmware(sig); | |
809 | ||
810 | return result; | |
811 | } | |
812 | ||
813 | static void free_regdb_keyring(void) | |
814 | { | |
815 | key_put(builtin_regdb_keys); | |
816 | } | |
817 | #else | |
818 | static int load_builtin_regdb_keys(void) | |
819 | { | |
820 | return 0; | |
821 | } | |
822 | ||
823 | static bool regdb_has_valid_signature(const u8 *data, unsigned int size) | |
824 | { | |
825 | return true; | |
826 | } | |
827 | ||
828 | static void free_regdb_keyring(void) | |
829 | { | |
830 | } | |
831 | #endif /* CONFIG_CFG80211_REQUIRE_SIGNED_REGDB */ | |
832 | ||
007f6c5e JB |
833 | static bool valid_regdb(const u8 *data, unsigned int size) |
834 | { | |
835 | const struct fwdb_header *hdr = (void *)data; | |
836 | const struct fwdb_country *country; | |
837 | ||
838 | if (size < sizeof(*hdr)) | |
839 | return false; | |
840 | ||
841 | if (hdr->magic != cpu_to_be32(FWDB_MAGIC)) | |
842 | return false; | |
843 | ||
844 | if (hdr->version != cpu_to_be32(FWDB_VERSION)) | |
845 | return false; | |
846 | ||
90a53e44 JB |
847 | if (!regdb_has_valid_signature(data, size)) |
848 | return false; | |
849 | ||
007f6c5e JB |
850 | country = &hdr->country[0]; |
851 | while ((u8 *)(country + 1) <= data + size) { | |
852 | if (!country->coll_ptr) | |
853 | break; | |
854 | if (!valid_country(data, size, country)) | |
855 | return false; | |
856 | country++; | |
857 | } | |
858 | ||
859 | return true; | |
860 | } | |
861 | ||
014f5a25 SG |
862 | static void set_wmm_rule(const struct fwdb_header *db, |
863 | const struct fwdb_country *country, | |
864 | const struct fwdb_rule *rule, | |
865 | struct ieee80211_reg_rule *rrule) | |
866 | { | |
867 | struct ieee80211_wmm_rule *wmm_rule = &rrule->wmm_rule; | |
868 | struct fwdb_wmm_rule *wmm; | |
869 | unsigned int i, wmm_ptr; | |
870 | ||
871 | wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2; | |
872 | wmm = (void *)((u8 *)db + wmm_ptr); | |
873 | ||
874 | if (!valid_wmm(wmm)) { | |
875 | pr_err("Invalid regulatory WMM rule %u-%u in domain %c%c\n", | |
876 | be32_to_cpu(rule->start), be32_to_cpu(rule->end), | |
877 | country->alpha2[0], country->alpha2[1]); | |
878 | return; | |
879 | } | |
230ebaa1 HD |
880 | |
881 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
014f5a25 | 882 | wmm_rule->client[i].cw_min = |
230ebaa1 | 883 | ecw2cw((wmm->client[i].ecw & 0xf0) >> 4); |
014f5a25 SG |
884 | wmm_rule->client[i].cw_max = ecw2cw(wmm->client[i].ecw & 0x0f); |
885 | wmm_rule->client[i].aifsn = wmm->client[i].aifsn; | |
886 | wmm_rule->client[i].cot = | |
887 | 1000 * be16_to_cpu(wmm->client[i].cot); | |
888 | wmm_rule->ap[i].cw_min = ecw2cw((wmm->ap[i].ecw & 0xf0) >> 4); | |
889 | wmm_rule->ap[i].cw_max = ecw2cw(wmm->ap[i].ecw & 0x0f); | |
890 | wmm_rule->ap[i].aifsn = wmm->ap[i].aifsn; | |
891 | wmm_rule->ap[i].cot = 1000 * be16_to_cpu(wmm->ap[i].cot); | |
230ebaa1 | 892 | } |
38cb87ee SG |
893 | |
894 | rrule->has_wmm = true; | |
230ebaa1 HD |
895 | } |
896 | ||
19d3577e HD |
897 | static int __regdb_query_wmm(const struct fwdb_header *db, |
898 | const struct fwdb_country *country, int freq, | |
014f5a25 | 899 | struct ieee80211_reg_rule *rrule) |
19d3577e HD |
900 | { |
901 | unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2; | |
902 | struct fwdb_collection *coll = (void *)((u8 *)db + ptr); | |
903 | int i; | |
904 | ||
905 | for (i = 0; i < coll->n_rules; i++) { | |
906 | __be16 *rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2)); | |
907 | unsigned int rule_ptr = be16_to_cpu(rules_ptr[i]) << 2; | |
014f5a25 | 908 | struct fwdb_rule *rule = (void *)((u8 *)db + rule_ptr); |
19d3577e | 909 | |
014f5a25 | 910 | if (rule->len < offsetofend(struct fwdb_rule, wmm_ptr)) |
19d3577e HD |
911 | continue; |
912 | ||
014f5a25 SG |
913 | if (freq >= KHZ_TO_MHZ(be32_to_cpu(rule->start)) && |
914 | freq <= KHZ_TO_MHZ(be32_to_cpu(rule->end))) { | |
915 | set_wmm_rule(db, country, rule, rrule); | |
19d3577e HD |
916 | return 0; |
917 | } | |
918 | } | |
919 | ||
920 | return -ENODATA; | |
921 | } | |
922 | ||
38cb87ee | 923 | int reg_query_regdb_wmm(char *alpha2, int freq, struct ieee80211_reg_rule *rule) |
19d3577e HD |
924 | { |
925 | const struct fwdb_header *hdr = regdb; | |
926 | const struct fwdb_country *country; | |
927 | ||
5247a77c HD |
928 | if (!regdb) |
929 | return -ENODATA; | |
930 | ||
19d3577e HD |
931 | if (IS_ERR(regdb)) |
932 | return PTR_ERR(regdb); | |
933 | ||
934 | country = &hdr->country[0]; | |
935 | while (country->coll_ptr) { | |
936 | if (alpha2_equal(alpha2, country->alpha2)) | |
38cb87ee | 937 | return __regdb_query_wmm(regdb, country, freq, rule); |
19d3577e HD |
938 | |
939 | country++; | |
940 | } | |
941 | ||
942 | return -ENODATA; | |
943 | } | |
944 | EXPORT_SYMBOL(reg_query_regdb_wmm); | |
945 | ||
007f6c5e JB |
946 | static int regdb_query_country(const struct fwdb_header *db, |
947 | const struct fwdb_country *country) | |
948 | { | |
949 | unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2; | |
950 | struct fwdb_collection *coll = (void *)((u8 *)db + ptr); | |
951 | struct ieee80211_regdomain *regdom; | |
9f8c7136 | 952 | unsigned int i; |
007f6c5e | 953 | |
9f8c7136 GS |
954 | regdom = kzalloc(struct_size(regdom, reg_rules, coll->n_rules), |
955 | GFP_KERNEL); | |
007f6c5e JB |
956 | if (!regdom) |
957 | return -ENOMEM; | |
958 | ||
959 | regdom->n_reg_rules = coll->n_rules; | |
960 | regdom->alpha2[0] = country->alpha2[0]; | |
961 | regdom->alpha2[1] = country->alpha2[1]; | |
962 | regdom->dfs_region = coll->dfs_region; | |
963 | ||
964 | for (i = 0; i < regdom->n_reg_rules; i++) { | |
965 | __be16 *rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2)); | |
966 | unsigned int rule_ptr = be16_to_cpu(rules_ptr[i]) << 2; | |
967 | struct fwdb_rule *rule = (void *)((u8 *)db + rule_ptr); | |
968 | struct ieee80211_reg_rule *rrule = ®dom->reg_rules[i]; | |
969 | ||
970 | rrule->freq_range.start_freq_khz = be32_to_cpu(rule->start); | |
971 | rrule->freq_range.end_freq_khz = be32_to_cpu(rule->end); | |
972 | rrule->freq_range.max_bandwidth_khz = be32_to_cpu(rule->max_bw); | |
973 | ||
974 | rrule->power_rule.max_antenna_gain = 0; | |
975 | rrule->power_rule.max_eirp = be16_to_cpu(rule->max_eirp); | |
976 | ||
977 | rrule->flags = 0; | |
978 | if (rule->flags & FWDB_FLAG_NO_OFDM) | |
979 | rrule->flags |= NL80211_RRF_NO_OFDM; | |
980 | if (rule->flags & FWDB_FLAG_NO_OUTDOOR) | |
981 | rrule->flags |= NL80211_RRF_NO_OUTDOOR; | |
982 | if (rule->flags & FWDB_FLAG_DFS) | |
983 | rrule->flags |= NL80211_RRF_DFS; | |
984 | if (rule->flags & FWDB_FLAG_NO_IR) | |
985 | rrule->flags |= NL80211_RRF_NO_IR; | |
986 | if (rule->flags & FWDB_FLAG_AUTO_BW) | |
987 | rrule->flags |= NL80211_RRF_AUTO_BW; | |
988 | ||
989 | rrule->dfs_cac_ms = 0; | |
990 | ||
991 | /* handle optional data */ | |
992 | if (rule->len >= offsetofend(struct fwdb_rule, cac_timeout)) | |
993 | rrule->dfs_cac_ms = | |
994 | 1000 * be16_to_cpu(rule->cac_timeout); | |
014f5a25 SG |
995 | if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr)) |
996 | set_wmm_rule(db, country, rule, rrule); | |
007f6c5e JB |
997 | } |
998 | ||
999 | return reg_schedule_apply(regdom); | |
1000 | } | |
1001 | ||
1002 | static int query_regdb(const char *alpha2) | |
1003 | { | |
1004 | const struct fwdb_header *hdr = regdb; | |
1005 | const struct fwdb_country *country; | |
1006 | ||
1ea4ff3e JB |
1007 | ASSERT_RTNL(); |
1008 | ||
007f6c5e JB |
1009 | if (IS_ERR(regdb)) |
1010 | return PTR_ERR(regdb); | |
1011 | ||
1012 | country = &hdr->country[0]; | |
1013 | while (country->coll_ptr) { | |
1014 | if (alpha2_equal(alpha2, country->alpha2)) | |
1015 | return regdb_query_country(regdb, country); | |
1016 | country++; | |
1017 | } | |
1018 | ||
1019 | return -ENODATA; | |
1020 | } | |
1021 | ||
1022 | static void regdb_fw_cb(const struct firmware *fw, void *context) | |
1023 | { | |
1ea4ff3e JB |
1024 | int set_error = 0; |
1025 | bool restore = true; | |
007f6c5e JB |
1026 | void *db; |
1027 | ||
1028 | if (!fw) { | |
1029 | pr_info("failed to load regulatory.db\n"); | |
1ea4ff3e JB |
1030 | set_error = -ENODATA; |
1031 | } else if (!valid_regdb(fw->data, fw->size)) { | |
90a53e44 | 1032 | pr_info("loaded regulatory.db is malformed or signature is missing/invalid\n"); |
1ea4ff3e | 1033 | set_error = -EINVAL; |
007f6c5e JB |
1034 | } |
1035 | ||
1ea4ff3e | 1036 | rtnl_lock(); |
faae54ad CT |
1037 | if (regdb && !IS_ERR(regdb)) { |
1038 | /* negative case - a bug | |
1039 | * positive case - can happen due to race in case of multiple cb's in | |
1040 | * queue, due to usage of asynchronous callback | |
1041 | * | |
1042 | * Either case, just restore and free new db. | |
1043 | */ | |
1ea4ff3e JB |
1044 | } else if (set_error) { |
1045 | regdb = ERR_PTR(set_error); | |
1046 | } else if (fw) { | |
1047 | db = kmemdup(fw->data, fw->size, GFP_KERNEL); | |
1048 | if (db) { | |
1049 | regdb = db; | |
1050 | restore = context && query_regdb(context); | |
1051 | } else { | |
1052 | restore = true; | |
1053 | } | |
007f6c5e JB |
1054 | } |
1055 | ||
1ea4ff3e | 1056 | if (restore) |
e646a025 | 1057 | restore_regulatory_settings(true, false); |
007f6c5e | 1058 | |
007f6c5e | 1059 | rtnl_unlock(); |
1ea4ff3e | 1060 | |
007f6c5e | 1061 | kfree(context); |
1ea4ff3e JB |
1062 | |
1063 | release_firmware(fw); | |
007f6c5e JB |
1064 | } |
1065 | ||
1066 | static int query_regdb_file(const char *alpha2) | |
1067 | { | |
1ea4ff3e JB |
1068 | ASSERT_RTNL(); |
1069 | ||
007f6c5e JB |
1070 | if (regdb) |
1071 | return query_regdb(alpha2); | |
1072 | ||
1073 | alpha2 = kmemdup(alpha2, 2, GFP_KERNEL); | |
1074 | if (!alpha2) | |
1075 | return -ENOMEM; | |
1076 | ||
1077 | return request_firmware_nowait(THIS_MODULE, true, "regulatory.db", | |
1078 | ®_pdev->dev, GFP_KERNEL, | |
1079 | (void *)alpha2, regdb_fw_cb); | |
1080 | } | |
1081 | ||
1ea4ff3e JB |
1082 | int reg_reload_regdb(void) |
1083 | { | |
1084 | const struct firmware *fw; | |
1085 | void *db; | |
1086 | int err; | |
1087 | ||
1088 | err = request_firmware(&fw, "regulatory.db", ®_pdev->dev); | |
1089 | if (err) | |
1090 | return err; | |
1091 | ||
1092 | if (!valid_regdb(fw->data, fw->size)) { | |
1093 | err = -ENODATA; | |
1094 | goto out; | |
1095 | } | |
1096 | ||
1097 | db = kmemdup(fw->data, fw->size, GFP_KERNEL); | |
1098 | if (!db) { | |
1099 | err = -ENOMEM; | |
1100 | goto out; | |
1101 | } | |
1102 | ||
1103 | rtnl_lock(); | |
1104 | if (!IS_ERR_OR_NULL(regdb)) | |
1105 | kfree(regdb); | |
1106 | regdb = db; | |
1107 | rtnl_unlock(); | |
1108 | ||
1109 | out: | |
1110 | release_firmware(fw); | |
1111 | return err; | |
1112 | } | |
1113 | ||
cecbb069 | 1114 | static bool reg_query_database(struct regulatory_request *request) |
fe6631ff | 1115 | { |
007f6c5e JB |
1116 | if (query_regdb_file(request->alpha2) == 0) |
1117 | return true; | |
1118 | ||
c7d319e5 JB |
1119 | if (call_crda(request->alpha2) == 0) |
1120 | return true; | |
1121 | ||
1122 | return false; | |
fe6631ff LR |
1123 | } |
1124 | ||
e438768f | 1125 | bool reg_is_valid_request(const char *alpha2) |
b2e1b302 | 1126 | { |
c492db37 | 1127 | struct regulatory_request *lr = get_last_request(); |
61405e97 | 1128 | |
c492db37 | 1129 | if (!lr || lr->processed) |
f6037d09 JB |
1130 | return false; |
1131 | ||
c492db37 | 1132 | return alpha2_equal(lr->alpha2, alpha2); |
b2e1b302 | 1133 | } |
8318d78a | 1134 | |
e3961af1 JD |
1135 | static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy) |
1136 | { | |
1137 | struct regulatory_request *lr = get_last_request(); | |
1138 | ||
1139 | /* | |
1140 | * Follow the driver's regulatory domain, if present, unless a country | |
1141 | * IE has been processed or a user wants to help complaince further | |
1142 | */ | |
1143 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
1144 | lr->initiator != NL80211_REGDOM_SET_BY_USER && | |
1145 | wiphy->regd) | |
1146 | return get_wiphy_regdom(wiphy); | |
1147 | ||
1148 | return get_cfg80211_regdom(); | |
1149 | } | |
1150 | ||
a6d4a534 AN |
1151 | static unsigned int |
1152 | reg_get_max_bandwidth_from_range(const struct ieee80211_regdomain *rd, | |
1153 | const struct ieee80211_reg_rule *rule) | |
97524820 JD |
1154 | { |
1155 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; | |
1156 | const struct ieee80211_freq_range *freq_range_tmp; | |
1157 | const struct ieee80211_reg_rule *tmp; | |
1158 | u32 start_freq, end_freq, idx, no; | |
1159 | ||
1160 | for (idx = 0; idx < rd->n_reg_rules; idx++) | |
1161 | if (rule == &rd->reg_rules[idx]) | |
1162 | break; | |
1163 | ||
1164 | if (idx == rd->n_reg_rules) | |
1165 | return 0; | |
1166 | ||
1167 | /* get start_freq */ | |
1168 | no = idx; | |
1169 | ||
1170 | while (no) { | |
1171 | tmp = &rd->reg_rules[--no]; | |
1172 | freq_range_tmp = &tmp->freq_range; | |
1173 | ||
1174 | if (freq_range_tmp->end_freq_khz < freq_range->start_freq_khz) | |
1175 | break; | |
1176 | ||
97524820 JD |
1177 | freq_range = freq_range_tmp; |
1178 | } | |
1179 | ||
1180 | start_freq = freq_range->start_freq_khz; | |
1181 | ||
1182 | /* get end_freq */ | |
1183 | freq_range = &rule->freq_range; | |
1184 | no = idx; | |
1185 | ||
1186 | while (no < rd->n_reg_rules - 1) { | |
1187 | tmp = &rd->reg_rules[++no]; | |
1188 | freq_range_tmp = &tmp->freq_range; | |
1189 | ||
1190 | if (freq_range_tmp->start_freq_khz > freq_range->end_freq_khz) | |
1191 | break; | |
1192 | ||
97524820 JD |
1193 | freq_range = freq_range_tmp; |
1194 | } | |
1195 | ||
1196 | end_freq = freq_range->end_freq_khz; | |
1197 | ||
1198 | return end_freq - start_freq; | |
1199 | } | |
1200 | ||
a6d4a534 AN |
1201 | unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, |
1202 | const struct ieee80211_reg_rule *rule) | |
1203 | { | |
1204 | unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule); | |
1205 | ||
1206 | if (rule->flags & NL80211_RRF_NO_160MHZ) | |
1207 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80)); | |
1208 | if (rule->flags & NL80211_RRF_NO_80MHZ) | |
1209 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(40)); | |
1210 | ||
1211 | /* | |
1212 | * HT40+/HT40- limits are handled per-channel. Only limit BW if both | |
1213 | * are not allowed. | |
1214 | */ | |
1215 | if (rule->flags & NL80211_RRF_NO_HT40MINUS && | |
1216 | rule->flags & NL80211_RRF_NO_HT40PLUS) | |
1217 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(20)); | |
1218 | ||
1219 | return bw; | |
1220 | } | |
1221 | ||
b2e1b302 | 1222 | /* Sanity check on a regulatory rule */ |
a3d2eaf0 | 1223 | static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule) |
8318d78a | 1224 | { |
a3d2eaf0 | 1225 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
b2e1b302 LR |
1226 | u32 freq_diff; |
1227 | ||
91e99004 | 1228 | if (freq_range->start_freq_khz <= 0 || freq_range->end_freq_khz <= 0) |
b2e1b302 LR |
1229 | return false; |
1230 | ||
1231 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) | |
1232 | return false; | |
1233 | ||
1234 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; | |
1235 | ||
bd05f28e | 1236 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
1a919318 | 1237 | freq_range->max_bandwidth_khz > freq_diff) |
b2e1b302 LR |
1238 | return false; |
1239 | ||
1240 | return true; | |
1241 | } | |
1242 | ||
a3d2eaf0 | 1243 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
b2e1b302 | 1244 | { |
a3d2eaf0 | 1245 | const struct ieee80211_reg_rule *reg_rule = NULL; |
b2e1b302 | 1246 | unsigned int i; |
8318d78a | 1247 | |
b2e1b302 LR |
1248 | if (!rd->n_reg_rules) |
1249 | return false; | |
8318d78a | 1250 | |
88dc1c3f LR |
1251 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
1252 | return false; | |
1253 | ||
b2e1b302 LR |
1254 | for (i = 0; i < rd->n_reg_rules; i++) { |
1255 | reg_rule = &rd->reg_rules[i]; | |
1256 | if (!is_valid_reg_rule(reg_rule)) | |
1257 | return false; | |
1258 | } | |
1259 | ||
1260 | return true; | |
8318d78a JB |
1261 | } |
1262 | ||
0c7dc45d LR |
1263 | /** |
1264 | * freq_in_rule_band - tells us if a frequency is in a frequency band | |
1265 | * @freq_range: frequency rule we want to query | |
1266 | * @freq_khz: frequency we are inquiring about | |
1267 | * | |
1268 | * This lets us know if a specific frequency rule is or is not relevant to | |
1269 | * a specific frequency's band. Bands are device specific and artificial | |
64629b9d VK |
1270 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
1271 | * however it is safe for now to assume that a frequency rule should not be | |
1272 | * part of a frequency's band if the start freq or end freq are off by more | |
93183bdb | 1273 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 20 GHz for the |
64629b9d | 1274 | * 60 GHz band. |
0c7dc45d LR |
1275 | * This resolution can be lowered and should be considered as we add |
1276 | * regulatory rule support for other "bands". | |
1277 | **/ | |
1278 | static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range, | |
1a919318 | 1279 | u32 freq_khz) |
0c7dc45d LR |
1280 | { |
1281 | #define ONE_GHZ_IN_KHZ 1000000 | |
64629b9d VK |
1282 | /* |
1283 | * From 802.11ad: directional multi-gigabit (DMG): | |
1284 | * Pertaining to operation in a frequency band containing a channel | |
1285 | * with the Channel starting frequency above 45 GHz. | |
1286 | */ | |
1287 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? | |
93183bdb | 1288 | 20 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; |
64629b9d | 1289 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) |
0c7dc45d | 1290 | return true; |
64629b9d | 1291 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
0c7dc45d LR |
1292 | return true; |
1293 | return false; | |
1294 | #undef ONE_GHZ_IN_KHZ | |
1295 | } | |
1296 | ||
adbfb058 LR |
1297 | /* |
1298 | * Later on we can perhaps use the more restrictive DFS | |
1299 | * region but we don't have information for that yet so | |
1300 | * for now simply disallow conflicts. | |
1301 | */ | |
1302 | static enum nl80211_dfs_regions | |
1303 | reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1, | |
1304 | const enum nl80211_dfs_regions dfs_region2) | |
1305 | { | |
1306 | if (dfs_region1 != dfs_region2) | |
1307 | return NL80211_DFS_UNSET; | |
1308 | return dfs_region1; | |
1309 | } | |
1310 | ||
08a75a88 IP |
1311 | static void reg_wmm_rules_intersect(const struct ieee80211_wmm_ac *wmm_ac1, |
1312 | const struct ieee80211_wmm_ac *wmm_ac2, | |
1313 | struct ieee80211_wmm_ac *intersect) | |
1314 | { | |
1315 | intersect->cw_min = max_t(u16, wmm_ac1->cw_min, wmm_ac2->cw_min); | |
1316 | intersect->cw_max = max_t(u16, wmm_ac1->cw_max, wmm_ac2->cw_max); | |
1317 | intersect->cot = min_t(u16, wmm_ac1->cot, wmm_ac2->cot); | |
1318 | intersect->aifsn = max_t(u8, wmm_ac1->aifsn, wmm_ac2->aifsn); | |
1319 | } | |
1320 | ||
fb1fc7ad LR |
1321 | /* |
1322 | * Helper for regdom_intersect(), this does the real | |
1323 | * mathematical intersection fun | |
1324 | */ | |
97524820 JD |
1325 | static int reg_rules_intersect(const struct ieee80211_regdomain *rd1, |
1326 | const struct ieee80211_regdomain *rd2, | |
1327 | const struct ieee80211_reg_rule *rule1, | |
1a919318 JB |
1328 | const struct ieee80211_reg_rule *rule2, |
1329 | struct ieee80211_reg_rule *intersected_rule) | |
9c96477d LR |
1330 | { |
1331 | const struct ieee80211_freq_range *freq_range1, *freq_range2; | |
1332 | struct ieee80211_freq_range *freq_range; | |
1333 | const struct ieee80211_power_rule *power_rule1, *power_rule2; | |
1334 | struct ieee80211_power_rule *power_rule; | |
08a75a88 IP |
1335 | const struct ieee80211_wmm_rule *wmm_rule1, *wmm_rule2; |
1336 | struct ieee80211_wmm_rule *wmm_rule; | |
97524820 | 1337 | u32 freq_diff, max_bandwidth1, max_bandwidth2; |
9c96477d LR |
1338 | |
1339 | freq_range1 = &rule1->freq_range; | |
1340 | freq_range2 = &rule2->freq_range; | |
1341 | freq_range = &intersected_rule->freq_range; | |
1342 | ||
1343 | power_rule1 = &rule1->power_rule; | |
1344 | power_rule2 = &rule2->power_rule; | |
1345 | power_rule = &intersected_rule->power_rule; | |
1346 | ||
08a75a88 IP |
1347 | wmm_rule1 = &rule1->wmm_rule; |
1348 | wmm_rule2 = &rule2->wmm_rule; | |
1349 | wmm_rule = &intersected_rule->wmm_rule; | |
1350 | ||
9c96477d | 1351 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, |
1a919318 | 1352 | freq_range2->start_freq_khz); |
9c96477d | 1353 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
1a919318 | 1354 | freq_range2->end_freq_khz); |
97524820 JD |
1355 | |
1356 | max_bandwidth1 = freq_range1->max_bandwidth_khz; | |
1357 | max_bandwidth2 = freq_range2->max_bandwidth_khz; | |
1358 | ||
b0dfd2ea JD |
1359 | if (rule1->flags & NL80211_RRF_AUTO_BW) |
1360 | max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1); | |
1361 | if (rule2->flags & NL80211_RRF_AUTO_BW) | |
1362 | max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2); | |
97524820 JD |
1363 | |
1364 | freq_range->max_bandwidth_khz = min(max_bandwidth1, max_bandwidth2); | |
9c96477d | 1365 | |
b0dfd2ea JD |
1366 | intersected_rule->flags = rule1->flags | rule2->flags; |
1367 | ||
1368 | /* | |
1369 | * In case NL80211_RRF_AUTO_BW requested for both rules | |
1370 | * set AUTO_BW in intersected rule also. Next we will | |
1371 | * calculate BW correctly in handle_channel function. | |
1372 | * In other case remove AUTO_BW flag while we calculate | |
1373 | * maximum bandwidth correctly and auto calculation is | |
1374 | * not required. | |
1375 | */ | |
1376 | if ((rule1->flags & NL80211_RRF_AUTO_BW) && | |
1377 | (rule2->flags & NL80211_RRF_AUTO_BW)) | |
1378 | intersected_rule->flags |= NL80211_RRF_AUTO_BW; | |
1379 | else | |
1380 | intersected_rule->flags &= ~NL80211_RRF_AUTO_BW; | |
1381 | ||
9c96477d LR |
1382 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
1383 | if (freq_range->max_bandwidth_khz > freq_diff) | |
1384 | freq_range->max_bandwidth_khz = freq_diff; | |
1385 | ||
1386 | power_rule->max_eirp = min(power_rule1->max_eirp, | |
1387 | power_rule2->max_eirp); | |
1388 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, | |
1389 | power_rule2->max_antenna_gain); | |
1390 | ||
089027e5 JD |
1391 | intersected_rule->dfs_cac_ms = max(rule1->dfs_cac_ms, |
1392 | rule2->dfs_cac_ms); | |
1393 | ||
08a75a88 IP |
1394 | if (rule1->has_wmm && rule2->has_wmm) { |
1395 | u8 ac; | |
1396 | ||
1397 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1398 | reg_wmm_rules_intersect(&wmm_rule1->client[ac], | |
1399 | &wmm_rule2->client[ac], | |
1400 | &wmm_rule->client[ac]); | |
1401 | reg_wmm_rules_intersect(&wmm_rule1->ap[ac], | |
1402 | &wmm_rule2->ap[ac], | |
1403 | &wmm_rule->ap[ac]); | |
1404 | } | |
1405 | ||
1406 | intersected_rule->has_wmm = true; | |
1407 | } else if (rule1->has_wmm) { | |
1408 | *wmm_rule = *wmm_rule1; | |
1409 | intersected_rule->has_wmm = true; | |
1410 | } else if (rule2->has_wmm) { | |
1411 | *wmm_rule = *wmm_rule2; | |
1412 | intersected_rule->has_wmm = true; | |
1413 | } else { | |
1414 | intersected_rule->has_wmm = false; | |
1415 | } | |
1416 | ||
9c96477d LR |
1417 | if (!is_valid_reg_rule(intersected_rule)) |
1418 | return -EINVAL; | |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
a62a1aed EP |
1423 | /* check whether old rule contains new rule */ |
1424 | static bool rule_contains(struct ieee80211_reg_rule *r1, | |
1425 | struct ieee80211_reg_rule *r2) | |
1426 | { | |
1427 | /* for simplicity, currently consider only same flags */ | |
1428 | if (r1->flags != r2->flags) | |
1429 | return false; | |
1430 | ||
1431 | /* verify r1 is more restrictive */ | |
1432 | if ((r1->power_rule.max_antenna_gain > | |
1433 | r2->power_rule.max_antenna_gain) || | |
1434 | r1->power_rule.max_eirp > r2->power_rule.max_eirp) | |
1435 | return false; | |
1436 | ||
1437 | /* make sure r2's range is contained within r1 */ | |
1438 | if (r1->freq_range.start_freq_khz > r2->freq_range.start_freq_khz || | |
1439 | r1->freq_range.end_freq_khz < r2->freq_range.end_freq_khz) | |
1440 | return false; | |
1441 | ||
1442 | /* and finally verify that r1.max_bw >= r2.max_bw */ | |
1443 | if (r1->freq_range.max_bandwidth_khz < | |
1444 | r2->freq_range.max_bandwidth_khz) | |
1445 | return false; | |
1446 | ||
1447 | return true; | |
1448 | } | |
1449 | ||
1450 | /* add or extend current rules. do nothing if rule is already contained */ | |
1451 | static void add_rule(struct ieee80211_reg_rule *rule, | |
1452 | struct ieee80211_reg_rule *reg_rules, u32 *n_rules) | |
1453 | { | |
1454 | struct ieee80211_reg_rule *tmp_rule; | |
1455 | int i; | |
1456 | ||
1457 | for (i = 0; i < *n_rules; i++) { | |
1458 | tmp_rule = ®_rules[i]; | |
1459 | /* rule is already contained - do nothing */ | |
1460 | if (rule_contains(tmp_rule, rule)) | |
1461 | return; | |
1462 | ||
1463 | /* extend rule if possible */ | |
1464 | if (rule_contains(rule, tmp_rule)) { | |
1465 | memcpy(tmp_rule, rule, sizeof(*rule)); | |
1466 | return; | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | memcpy(®_rules[*n_rules], rule, sizeof(*rule)); | |
1471 | (*n_rules)++; | |
1472 | } | |
1473 | ||
9c96477d LR |
1474 | /** |
1475 | * regdom_intersect - do the intersection between two regulatory domains | |
1476 | * @rd1: first regulatory domain | |
1477 | * @rd2: second regulatory domain | |
1478 | * | |
1479 | * Use this function to get the intersection between two regulatory domains. | |
1480 | * Once completed we will mark the alpha2 for the rd as intersected, "98", | |
1481 | * as no one single alpha2 can represent this regulatory domain. | |
1482 | * | |
1483 | * Returns a pointer to the regulatory domain structure which will hold the | |
1484 | * resulting intersection of rules between rd1 and rd2. We will | |
1485 | * kzalloc() this structure for you. | |
1486 | */ | |
1a919318 JB |
1487 | static struct ieee80211_regdomain * |
1488 | regdom_intersect(const struct ieee80211_regdomain *rd1, | |
1489 | const struct ieee80211_regdomain *rd2) | |
9c96477d | 1490 | { |
9f8c7136 | 1491 | int r; |
9c96477d | 1492 | unsigned int x, y; |
a62a1aed | 1493 | unsigned int num_rules = 0; |
9c96477d | 1494 | const struct ieee80211_reg_rule *rule1, *rule2; |
a62a1aed | 1495 | struct ieee80211_reg_rule intersected_rule; |
9c96477d | 1496 | struct ieee80211_regdomain *rd; |
9c96477d LR |
1497 | |
1498 | if (!rd1 || !rd2) | |
1499 | return NULL; | |
1500 | ||
fb1fc7ad LR |
1501 | /* |
1502 | * First we get a count of the rules we'll need, then we actually | |
9c96477d LR |
1503 | * build them. This is to so we can malloc() and free() a |
1504 | * regdomain once. The reason we use reg_rules_intersect() here | |
1505 | * is it will return -EINVAL if the rule computed makes no sense. | |
fb1fc7ad LR |
1506 | * All rules that do check out OK are valid. |
1507 | */ | |
9c96477d LR |
1508 | |
1509 | for (x = 0; x < rd1->n_reg_rules; x++) { | |
1510 | rule1 = &rd1->reg_rules[x]; | |
1511 | for (y = 0; y < rd2->n_reg_rules; y++) { | |
1512 | rule2 = &rd2->reg_rules[y]; | |
97524820 | 1513 | if (!reg_rules_intersect(rd1, rd2, rule1, rule2, |
a62a1aed | 1514 | &intersected_rule)) |
9c96477d | 1515 | num_rules++; |
9c96477d LR |
1516 | } |
1517 | } | |
1518 | ||
1519 | if (!num_rules) | |
1520 | return NULL; | |
1521 | ||
9f8c7136 | 1522 | rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL); |
9c96477d LR |
1523 | if (!rd) |
1524 | return NULL; | |
1525 | ||
a62a1aed | 1526 | for (x = 0; x < rd1->n_reg_rules; x++) { |
9c96477d | 1527 | rule1 = &rd1->reg_rules[x]; |
a62a1aed | 1528 | for (y = 0; y < rd2->n_reg_rules; y++) { |
9c96477d | 1529 | rule2 = &rd2->reg_rules[y]; |
97524820 | 1530 | r = reg_rules_intersect(rd1, rd2, rule1, rule2, |
a62a1aed | 1531 | &intersected_rule); |
fb1fc7ad LR |
1532 | /* |
1533 | * No need to memset here the intersected rule here as | |
1534 | * we're not using the stack anymore | |
1535 | */ | |
9c96477d LR |
1536 | if (r) |
1537 | continue; | |
9c96477d | 1538 | |
a62a1aed EP |
1539 | add_rule(&intersected_rule, rd->reg_rules, |
1540 | &rd->n_reg_rules); | |
1541 | } | |
9c96477d LR |
1542 | } |
1543 | ||
9c96477d LR |
1544 | rd->alpha2[0] = '9'; |
1545 | rd->alpha2[1] = '8'; | |
adbfb058 LR |
1546 | rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region, |
1547 | rd2->dfs_region); | |
9c96477d LR |
1548 | |
1549 | return rd; | |
1550 | } | |
1551 | ||
fb1fc7ad LR |
1552 | /* |
1553 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may | |
1554 | * want to just have the channel structure use these | |
1555 | */ | |
b2e1b302 LR |
1556 | static u32 map_regdom_flags(u32 rd_flags) |
1557 | { | |
1558 | u32 channel_flags = 0; | |
8fe02e16 LR |
1559 | if (rd_flags & NL80211_RRF_NO_IR_ALL) |
1560 | channel_flags |= IEEE80211_CHAN_NO_IR; | |
b2e1b302 LR |
1561 | if (rd_flags & NL80211_RRF_DFS) |
1562 | channel_flags |= IEEE80211_CHAN_RADAR; | |
03f6b084 SF |
1563 | if (rd_flags & NL80211_RRF_NO_OFDM) |
1564 | channel_flags |= IEEE80211_CHAN_NO_OFDM; | |
570dbde1 DS |
1565 | if (rd_flags & NL80211_RRF_NO_OUTDOOR) |
1566 | channel_flags |= IEEE80211_CHAN_INDOOR_ONLY; | |
06f207fc AN |
1567 | if (rd_flags & NL80211_RRF_IR_CONCURRENT) |
1568 | channel_flags |= IEEE80211_CHAN_IR_CONCURRENT; | |
a6d4a534 AN |
1569 | if (rd_flags & NL80211_RRF_NO_HT40MINUS) |
1570 | channel_flags |= IEEE80211_CHAN_NO_HT40MINUS; | |
1571 | if (rd_flags & NL80211_RRF_NO_HT40PLUS) | |
1572 | channel_flags |= IEEE80211_CHAN_NO_HT40PLUS; | |
1573 | if (rd_flags & NL80211_RRF_NO_80MHZ) | |
1574 | channel_flags |= IEEE80211_CHAN_NO_80MHZ; | |
1575 | if (rd_flags & NL80211_RRF_NO_160MHZ) | |
1576 | channel_flags |= IEEE80211_CHAN_NO_160MHZ; | |
1e61d82c HD |
1577 | if (rd_flags & NL80211_RRF_NO_HE) |
1578 | channel_flags |= IEEE80211_CHAN_NO_HE; | |
b2e1b302 LR |
1579 | return channel_flags; |
1580 | } | |
1581 | ||
361c9c8b | 1582 | static const struct ieee80211_reg_rule * |
49172874 | 1583 | freq_reg_info_regd(u32 center_freq, |
4edd5698 | 1584 | const struct ieee80211_regdomain *regd, u32 bw) |
8318d78a JB |
1585 | { |
1586 | int i; | |
0c7dc45d | 1587 | bool band_rule_found = false; |
038659e7 LR |
1588 | bool bw_fits = false; |
1589 | ||
3e0c3ff3 | 1590 | if (!regd) |
361c9c8b | 1591 | return ERR_PTR(-EINVAL); |
b2e1b302 | 1592 | |
3e0c3ff3 | 1593 | for (i = 0; i < regd->n_reg_rules; i++) { |
b2e1b302 LR |
1594 | const struct ieee80211_reg_rule *rr; |
1595 | const struct ieee80211_freq_range *fr = NULL; | |
b2e1b302 | 1596 | |
3e0c3ff3 | 1597 | rr = ®d->reg_rules[i]; |
b2e1b302 | 1598 | fr = &rr->freq_range; |
0c7dc45d | 1599 | |
fb1fc7ad LR |
1600 | /* |
1601 | * We only need to know if one frequency rule was | |
cc5a639b | 1602 | * in center_freq's band, that's enough, so let's |
fb1fc7ad LR |
1603 | * not overwrite it once found |
1604 | */ | |
0c7dc45d LR |
1605 | if (!band_rule_found) |
1606 | band_rule_found = freq_in_rule_band(fr, center_freq); | |
1607 | ||
4787cfa0 | 1608 | bw_fits = cfg80211_does_bw_fit_range(fr, center_freq, bw); |
0c7dc45d | 1609 | |
361c9c8b JB |
1610 | if (band_rule_found && bw_fits) |
1611 | return rr; | |
8318d78a JB |
1612 | } |
1613 | ||
0c7dc45d | 1614 | if (!band_rule_found) |
361c9c8b | 1615 | return ERR_PTR(-ERANGE); |
0c7dc45d | 1616 | |
361c9c8b | 1617 | return ERR_PTR(-EINVAL); |
b2e1b302 LR |
1618 | } |
1619 | ||
8de1c63b JB |
1620 | static const struct ieee80211_reg_rule * |
1621 | __freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw) | |
1fa25e41 | 1622 | { |
4edd5698 | 1623 | const struct ieee80211_regdomain *regd = reg_get_regdomain(wiphy); |
c7ed0e68 | 1624 | static const u32 bws[] = {0, 1, 2, 4, 5, 8, 10, 16, 20}; |
735b2673 | 1625 | const struct ieee80211_reg_rule *reg_rule; |
68dbad8c | 1626 | int i = ARRAY_SIZE(bws) - 1; |
4edd5698 | 1627 | u32 bw; |
1a919318 | 1628 | |
68dbad8c | 1629 | for (bw = MHZ_TO_KHZ(bws[i]); bw >= min_bw; bw = MHZ_TO_KHZ(bws[i--])) { |
49172874 | 1630 | reg_rule = freq_reg_info_regd(center_freq, regd, bw); |
4edd5698 MM |
1631 | if (!IS_ERR(reg_rule)) |
1632 | return reg_rule; | |
1633 | } | |
5d885b99 | 1634 | |
4edd5698 MM |
1635 | return reg_rule; |
1636 | } | |
1637 | ||
1638 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, | |
1639 | u32 center_freq) | |
1640 | { | |
68dbad8c TP |
1641 | u32 min_bw = center_freq < MHZ_TO_KHZ(1000) ? 1 : 20; |
1642 | ||
1643 | return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(min_bw)); | |
1fa25e41 | 1644 | } |
4f366c5d | 1645 | EXPORT_SYMBOL(freq_reg_info); |
b2e1b302 | 1646 | |
034c6d6e | 1647 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
926a0a09 LR |
1648 | { |
1649 | switch (initiator) { | |
1650 | case NL80211_REGDOM_SET_BY_CORE: | |
034c6d6e | 1651 | return "core"; |
926a0a09 | 1652 | case NL80211_REGDOM_SET_BY_USER: |
034c6d6e | 1653 | return "user"; |
926a0a09 | 1654 | case NL80211_REGDOM_SET_BY_DRIVER: |
034c6d6e | 1655 | return "driver"; |
926a0a09 | 1656 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
8db0c433 | 1657 | return "country element"; |
926a0a09 LR |
1658 | default: |
1659 | WARN_ON(1); | |
034c6d6e | 1660 | return "bug"; |
926a0a09 LR |
1661 | } |
1662 | } | |
034c6d6e | 1663 | EXPORT_SYMBOL(reg_initiator_name); |
e702d3cf | 1664 | |
1aeb135f MS |
1665 | static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd, |
1666 | const struct ieee80211_reg_rule *reg_rule, | |
1667 | const struct ieee80211_channel *chan) | |
1668 | { | |
1669 | const struct ieee80211_freq_range *freq_range = NULL; | |
934f4c7d | 1670 | u32 max_bandwidth_khz, center_freq_khz, bw_flags = 0; |
68dbad8c | 1671 | bool is_s1g = chan->band == NL80211_BAND_S1GHZ; |
1aeb135f MS |
1672 | |
1673 | freq_range = ®_rule->freq_range; | |
1674 | ||
1675 | max_bandwidth_khz = freq_range->max_bandwidth_khz; | |
934f4c7d | 1676 | center_freq_khz = ieee80211_channel_to_khz(chan); |
1aeb135f MS |
1677 | /* Check if auto calculation requested */ |
1678 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) | |
1679 | max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule); | |
1680 | ||
1681 | /* If we get a reg_rule we can assume that at least 5Mhz fit */ | |
4787cfa0 | 1682 | if (!cfg80211_does_bw_fit_range(freq_range, |
934f4c7d | 1683 | center_freq_khz, |
4787cfa0 | 1684 | MHZ_TO_KHZ(10))) |
1aeb135f | 1685 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; |
4787cfa0 | 1686 | if (!cfg80211_does_bw_fit_range(freq_range, |
934f4c7d | 1687 | center_freq_khz, |
4787cfa0 | 1688 | MHZ_TO_KHZ(20))) |
1aeb135f MS |
1689 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; |
1690 | ||
68dbad8c TP |
1691 | if (is_s1g) { |
1692 | /* S1G is strict about non overlapping channels. We can | |
1693 | * calculate which bandwidth is allowed per channel by finding | |
1694 | * the largest bandwidth which cleanly divides the freq_range. | |
1695 | */ | |
1696 | int edge_offset; | |
1697 | int ch_bw = max_bandwidth_khz; | |
1698 | ||
1699 | while (ch_bw) { | |
1700 | edge_offset = (center_freq_khz - ch_bw / 2) - | |
1701 | freq_range->start_freq_khz; | |
1702 | if (edge_offset % ch_bw == 0) { | |
1703 | switch (KHZ_TO_MHZ(ch_bw)) { | |
1704 | case 1: | |
1705 | bw_flags |= IEEE80211_CHAN_1MHZ; | |
1706 | break; | |
1707 | case 2: | |
1708 | bw_flags |= IEEE80211_CHAN_2MHZ; | |
1709 | break; | |
1710 | case 4: | |
1711 | bw_flags |= IEEE80211_CHAN_4MHZ; | |
1712 | break; | |
1713 | case 8: | |
1714 | bw_flags |= IEEE80211_CHAN_8MHZ; | |
1715 | break; | |
1716 | case 16: | |
1717 | bw_flags |= IEEE80211_CHAN_16MHZ; | |
1718 | break; | |
1719 | default: | |
1720 | /* If we got here, no bandwidths fit on | |
1721 | * this frequency, ie. band edge. | |
1722 | */ | |
1723 | bw_flags |= IEEE80211_CHAN_DISABLED; | |
1724 | break; | |
1725 | } | |
1726 | break; | |
1727 | } | |
1728 | ch_bw /= 2; | |
1729 | } | |
1730 | } else { | |
1731 | if (max_bandwidth_khz < MHZ_TO_KHZ(10)) | |
1732 | bw_flags |= IEEE80211_CHAN_NO_10MHZ; | |
1733 | if (max_bandwidth_khz < MHZ_TO_KHZ(20)) | |
1734 | bw_flags |= IEEE80211_CHAN_NO_20MHZ; | |
1735 | if (max_bandwidth_khz < MHZ_TO_KHZ(40)) | |
1736 | bw_flags |= IEEE80211_CHAN_NO_HT40; | |
1737 | if (max_bandwidth_khz < MHZ_TO_KHZ(80)) | |
1738 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; | |
1739 | if (max_bandwidth_khz < MHZ_TO_KHZ(160)) | |
1740 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; | |
1741 | } | |
1aeb135f MS |
1742 | return bw_flags; |
1743 | } | |
1744 | ||
7c9ff7e2 MT |
1745 | static void handle_channel_single_rule(struct wiphy *wiphy, |
1746 | enum nl80211_reg_initiator initiator, | |
1747 | struct ieee80211_channel *chan, | |
1748 | u32 flags, | |
1749 | struct regulatory_request *lr, | |
1750 | struct wiphy *request_wiphy, | |
1751 | const struct ieee80211_reg_rule *reg_rule) | |
1752 | { | |
1753 | u32 bw_flags = 0; | |
b2e1b302 | 1754 | const struct ieee80211_power_rule *power_rule = NULL; |
97524820 | 1755 | const struct ieee80211_regdomain *regd; |
a92a3ce7 | 1756 | |
b0dfd2ea | 1757 | regd = reg_get_regdomain(wiphy); |
e702d3cf | 1758 | |
b2e1b302 | 1759 | power_rule = ®_rule->power_rule; |
1aeb135f | 1760 | bw_flags = reg_rule_to_chan_bw_flags(regd, reg_rule, chan); |
b2e1b302 | 1761 | |
c492db37 | 1762 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
806a9e39 | 1763 | request_wiphy && request_wiphy == wiphy && |
a2f73b6c | 1764 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
fb1fc7ad | 1765 | /* |
25985edc | 1766 | * This guarantees the driver's requested regulatory domain |
f976376d | 1767 | * will always be used as a base for further regulatory |
fb1fc7ad LR |
1768 | * settings |
1769 | */ | |
f976376d | 1770 | chan->flags = chan->orig_flags = |
038659e7 | 1771 | map_regdom_flags(reg_rule->flags) | bw_flags; |
f976376d LR |
1772 | chan->max_antenna_gain = chan->orig_mag = |
1773 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); | |
279f0f55 | 1774 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
f976376d | 1775 | (int) MBM_TO_DBM(power_rule->max_eirp); |
4f267c11 JD |
1776 | |
1777 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1778 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1779 | if (reg_rule->dfs_cac_ms) | |
1780 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
1781 | } | |
1782 | ||
f976376d LR |
1783 | return; |
1784 | } | |
1785 | ||
04f39047 SW |
1786 | chan->dfs_state = NL80211_DFS_USABLE; |
1787 | chan->dfs_state_entered = jiffies; | |
1788 | ||
aa3d7eef | 1789 | chan->beacon_found = false; |
038659e7 | 1790 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
1a919318 JB |
1791 | chan->max_antenna_gain = |
1792 | min_t(int, chan->orig_mag, | |
1793 | MBI_TO_DBI(power_rule->max_antenna_gain)); | |
eccc068e | 1794 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
089027e5 JD |
1795 | |
1796 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1797 | if (reg_rule->dfs_cac_ms) | |
1798 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
1799 | else | |
1800 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1801 | } | |
1802 | ||
5e31fc08 SG |
1803 | if (chan->orig_mpwr) { |
1804 | /* | |
a09a85a0 LR |
1805 | * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER |
1806 | * will always follow the passed country IE power settings. | |
5e31fc08 SG |
1807 | */ |
1808 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
a09a85a0 | 1809 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) |
5e31fc08 SG |
1810 | chan->max_power = chan->max_reg_power; |
1811 | else | |
1812 | chan->max_power = min(chan->orig_mpwr, | |
1813 | chan->max_reg_power); | |
1814 | } else | |
1815 | chan->max_power = chan->max_reg_power; | |
8318d78a JB |
1816 | } |
1817 | ||
12adee3c MT |
1818 | static void handle_channel_adjacent_rules(struct wiphy *wiphy, |
1819 | enum nl80211_reg_initiator initiator, | |
1820 | struct ieee80211_channel *chan, | |
1821 | u32 flags, | |
1822 | struct regulatory_request *lr, | |
1823 | struct wiphy *request_wiphy, | |
1824 | const struct ieee80211_reg_rule *rrule1, | |
1825 | const struct ieee80211_reg_rule *rrule2, | |
1826 | struct ieee80211_freq_range *comb_range) | |
1827 | { | |
1828 | u32 bw_flags1 = 0; | |
1829 | u32 bw_flags2 = 0; | |
1830 | const struct ieee80211_power_rule *power_rule1 = NULL; | |
1831 | const struct ieee80211_power_rule *power_rule2 = NULL; | |
1832 | const struct ieee80211_regdomain *regd; | |
1833 | ||
1834 | regd = reg_get_regdomain(wiphy); | |
1835 | ||
1836 | power_rule1 = &rrule1->power_rule; | |
1837 | power_rule2 = &rrule2->power_rule; | |
1838 | bw_flags1 = reg_rule_to_chan_bw_flags(regd, rrule1, chan); | |
1839 | bw_flags2 = reg_rule_to_chan_bw_flags(regd, rrule2, chan); | |
1840 | ||
1841 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && | |
1842 | request_wiphy && request_wiphy == wiphy && | |
1843 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { | |
1844 | /* This guarantees the driver's requested regulatory domain | |
1845 | * will always be used as a base for further regulatory | |
1846 | * settings | |
1847 | */ | |
1848 | chan->flags = | |
1849 | map_regdom_flags(rrule1->flags) | | |
1850 | map_regdom_flags(rrule2->flags) | | |
1851 | bw_flags1 | | |
1852 | bw_flags2; | |
1853 | chan->orig_flags = chan->flags; | |
1854 | chan->max_antenna_gain = | |
1855 | min_t(int, MBI_TO_DBI(power_rule1->max_antenna_gain), | |
1856 | MBI_TO_DBI(power_rule2->max_antenna_gain)); | |
1857 | chan->orig_mag = chan->max_antenna_gain; | |
1858 | chan->max_reg_power = | |
1859 | min_t(int, MBM_TO_DBM(power_rule1->max_eirp), | |
1860 | MBM_TO_DBM(power_rule2->max_eirp)); | |
1861 | chan->max_power = chan->max_reg_power; | |
1862 | chan->orig_mpwr = chan->max_reg_power; | |
1863 | ||
1864 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1865 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1866 | if (rrule1->dfs_cac_ms || rrule2->dfs_cac_ms) | |
1867 | chan->dfs_cac_ms = max_t(unsigned int, | |
1868 | rrule1->dfs_cac_ms, | |
1869 | rrule2->dfs_cac_ms); | |
1870 | } | |
1871 | ||
1872 | return; | |
1873 | } | |
1874 | ||
1875 | chan->dfs_state = NL80211_DFS_USABLE; | |
1876 | chan->dfs_state_entered = jiffies; | |
1877 | ||
1878 | chan->beacon_found = false; | |
1879 | chan->flags = flags | bw_flags1 | bw_flags2 | | |
1880 | map_regdom_flags(rrule1->flags) | | |
1881 | map_regdom_flags(rrule2->flags); | |
1882 | ||
1883 | /* reg_rule_to_chan_bw_flags may forbids 10 and forbids 20 MHz | |
1884 | * (otherwise no adj. rule case), recheck therefore | |
1885 | */ | |
1886 | if (cfg80211_does_bw_fit_range(comb_range, | |
1887 | ieee80211_channel_to_khz(chan), | |
1888 | MHZ_TO_KHZ(10))) | |
1889 | chan->flags &= ~IEEE80211_CHAN_NO_10MHZ; | |
1890 | if (cfg80211_does_bw_fit_range(comb_range, | |
1891 | ieee80211_channel_to_khz(chan), | |
1892 | MHZ_TO_KHZ(20))) | |
1893 | chan->flags &= ~IEEE80211_CHAN_NO_20MHZ; | |
1894 | ||
1895 | chan->max_antenna_gain = | |
1896 | min_t(int, chan->orig_mag, | |
1897 | min_t(int, | |
1898 | MBI_TO_DBI(power_rule1->max_antenna_gain), | |
1899 | MBI_TO_DBI(power_rule2->max_antenna_gain))); | |
1900 | chan->max_reg_power = min_t(int, | |
1901 | MBM_TO_DBM(power_rule1->max_eirp), | |
1902 | MBM_TO_DBM(power_rule2->max_eirp)); | |
1903 | ||
1904 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
1905 | if (rrule1->dfs_cac_ms || rrule2->dfs_cac_ms) | |
1906 | chan->dfs_cac_ms = max_t(unsigned int, | |
1907 | rrule1->dfs_cac_ms, | |
1908 | rrule2->dfs_cac_ms); | |
1909 | else | |
1910 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
1911 | } | |
1912 | ||
1913 | if (chan->orig_mpwr) { | |
1914 | /* Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER | |
1915 | * will always follow the passed country IE power settings. | |
1916 | */ | |
1917 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
1918 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) | |
1919 | chan->max_power = chan->max_reg_power; | |
1920 | else | |
1921 | chan->max_power = min(chan->orig_mpwr, | |
1922 | chan->max_reg_power); | |
1923 | } else { | |
1924 | chan->max_power = chan->max_reg_power; | |
1925 | } | |
1926 | } | |
1927 | ||
7c9ff7e2 MT |
1928 | /* Note that right now we assume the desired channel bandwidth |
1929 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz | |
1930 | * per channel, the primary and the extension channel). | |
1931 | */ | |
1932 | static void handle_channel(struct wiphy *wiphy, | |
1933 | enum nl80211_reg_initiator initiator, | |
1934 | struct ieee80211_channel *chan) | |
1935 | { | |
12adee3c | 1936 | const u32 orig_chan_freq = ieee80211_channel_to_khz(chan); |
7c9ff7e2 | 1937 | struct regulatory_request *lr = get_last_request(); |
12adee3c MT |
1938 | struct wiphy *request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
1939 | const struct ieee80211_reg_rule *rrule = NULL; | |
1940 | const struct ieee80211_reg_rule *rrule1 = NULL; | |
1941 | const struct ieee80211_reg_rule *rrule2 = NULL; | |
1942 | ||
1943 | u32 flags = chan->orig_flags; | |
1944 | ||
1945 | rrule = freq_reg_info(wiphy, orig_chan_freq); | |
1946 | if (IS_ERR(rrule)) { | |
1947 | /* check for adjacent match, therefore get rules for | |
1948 | * chan - 20 MHz and chan + 20 MHz and test | |
1949 | * if reg rules are adjacent | |
1950 | */ | |
1951 | rrule1 = freq_reg_info(wiphy, | |
1952 | orig_chan_freq - MHZ_TO_KHZ(20)); | |
1953 | rrule2 = freq_reg_info(wiphy, | |
1954 | orig_chan_freq + MHZ_TO_KHZ(20)); | |
1955 | if (!IS_ERR(rrule1) && !IS_ERR(rrule2)) { | |
1956 | struct ieee80211_freq_range comb_range; | |
1957 | ||
1958 | if (rrule1->freq_range.end_freq_khz != | |
1959 | rrule2->freq_range.start_freq_khz) | |
1960 | goto disable_chan; | |
1961 | ||
1962 | comb_range.start_freq_khz = | |
1963 | rrule1->freq_range.start_freq_khz; | |
1964 | comb_range.end_freq_khz = | |
1965 | rrule2->freq_range.end_freq_khz; | |
1966 | comb_range.max_bandwidth_khz = | |
1967 | min_t(u32, | |
1968 | rrule1->freq_range.max_bandwidth_khz, | |
1969 | rrule2->freq_range.max_bandwidth_khz); | |
1970 | ||
1971 | if (!cfg80211_does_bw_fit_range(&comb_range, | |
1972 | orig_chan_freq, | |
1973 | MHZ_TO_KHZ(20))) | |
1974 | goto disable_chan; | |
1975 | ||
1976 | handle_channel_adjacent_rules(wiphy, initiator, chan, | |
1977 | flags, lr, request_wiphy, | |
1978 | rrule1, rrule2, | |
1979 | &comb_range); | |
1980 | return; | |
1981 | } | |
7c9ff7e2 | 1982 | |
12adee3c | 1983 | disable_chan: |
7c9ff7e2 MT |
1984 | /* We will disable all channels that do not match our |
1985 | * received regulatory rule unless the hint is coming | |
1986 | * from a Country IE and the Country IE had no information | |
1987 | * about a band. The IEEE 802.11 spec allows for an AP | |
1988 | * to send only a subset of the regulatory rules allowed, | |
1989 | * so an AP in the US that only supports 2.4 GHz may only send | |
1990 | * a country IE with information for the 2.4 GHz band | |
1991 | * while 5 GHz is still supported. | |
1992 | */ | |
1993 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
12adee3c | 1994 | PTR_ERR(rrule) == -ERANGE) |
7c9ff7e2 MT |
1995 | return; |
1996 | ||
1997 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && | |
1998 | request_wiphy && request_wiphy == wiphy && | |
1999 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { | |
2000 | pr_debug("Disabling freq %d.%03d MHz for good\n", | |
2001 | chan->center_freq, chan->freq_offset); | |
2002 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; | |
2003 | chan->flags = chan->orig_flags; | |
2004 | } else { | |
2005 | pr_debug("Disabling freq %d.%03d MHz\n", | |
2006 | chan->center_freq, chan->freq_offset); | |
2007 | chan->flags |= IEEE80211_CHAN_DISABLED; | |
2008 | } | |
2009 | return; | |
2010 | } | |
2011 | ||
2012 | handle_channel_single_rule(wiphy, initiator, chan, flags, lr, | |
12adee3c | 2013 | request_wiphy, rrule); |
7c9ff7e2 MT |
2014 | } |
2015 | ||
7ca43d03 | 2016 | static void handle_band(struct wiphy *wiphy, |
fdc9d7b2 JB |
2017 | enum nl80211_reg_initiator initiator, |
2018 | struct ieee80211_supported_band *sband) | |
8318d78a | 2019 | { |
a92a3ce7 | 2020 | unsigned int i; |
a92a3ce7 | 2021 | |
fdc9d7b2 JB |
2022 | if (!sband) |
2023 | return; | |
8318d78a JB |
2024 | |
2025 | for (i = 0; i < sband->n_channels; i++) | |
fdc9d7b2 | 2026 | handle_channel(wiphy, initiator, &sband->channels[i]); |
8318d78a JB |
2027 | } |
2028 | ||
57b5ce07 LR |
2029 | static bool reg_request_cell_base(struct regulatory_request *request) |
2030 | { | |
2031 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) | |
2032 | return false; | |
1a919318 | 2033 | return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE; |
57b5ce07 LR |
2034 | } |
2035 | ||
2036 | bool reg_last_request_cell_base(void) | |
2037 | { | |
38fd2143 | 2038 | return reg_request_cell_base(get_last_request()); |
57b5ce07 LR |
2039 | } |
2040 | ||
94fc661f | 2041 | #ifdef CONFIG_CFG80211_REG_CELLULAR_HINTS |
57b5ce07 | 2042 | /* Core specific check */ |
2f92212b JB |
2043 | static enum reg_request_treatment |
2044 | reg_ignore_cell_hint(struct regulatory_request *pending_request) | |
57b5ce07 | 2045 | { |
c492db37 JB |
2046 | struct regulatory_request *lr = get_last_request(); |
2047 | ||
57b5ce07 | 2048 | if (!reg_num_devs_support_basehint) |
2f92212b | 2049 | return REG_REQ_IGNORE; |
57b5ce07 | 2050 | |
c492db37 | 2051 | if (reg_request_cell_base(lr) && |
1a919318 | 2052 | !regdom_changes(pending_request->alpha2)) |
2f92212b | 2053 | return REG_REQ_ALREADY_SET; |
1a919318 | 2054 | |
2f92212b | 2055 | return REG_REQ_OK; |
57b5ce07 LR |
2056 | } |
2057 | ||
2058 | /* Device specific check */ | |
2059 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) | |
2060 | { | |
1a919318 | 2061 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
57b5ce07 LR |
2062 | } |
2063 | #else | |
a515de66 JB |
2064 | static enum reg_request_treatment |
2065 | reg_ignore_cell_hint(struct regulatory_request *pending_request) | |
57b5ce07 | 2066 | { |
2f92212b | 2067 | return REG_REQ_IGNORE; |
57b5ce07 | 2068 | } |
1a919318 JB |
2069 | |
2070 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) | |
57b5ce07 LR |
2071 | { |
2072 | return true; | |
2073 | } | |
2074 | #endif | |
2075 | ||
fa1fb9cb LR |
2076 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
2077 | { | |
a2f73b6c LR |
2078 | if (wiphy->regulatory_flags & REGULATORY_STRICT_REG && |
2079 | !(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)) | |
fa1fb9cb LR |
2080 | return true; |
2081 | return false; | |
2082 | } | |
57b5ce07 | 2083 | |
7db90f4a LR |
2084 | static bool ignore_reg_update(struct wiphy *wiphy, |
2085 | enum nl80211_reg_initiator initiator) | |
14b9815a | 2086 | { |
c492db37 JB |
2087 | struct regulatory_request *lr = get_last_request(); |
2088 | ||
b0d7aa59 JD |
2089 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
2090 | return true; | |
2091 | ||
c492db37 | 2092 | if (!lr) { |
c799ba6e JB |
2093 | pr_debug("Ignoring regulatory request set by %s since last_request is not set\n", |
2094 | reg_initiator_name(initiator)); | |
14b9815a | 2095 | return true; |
926a0a09 LR |
2096 | } |
2097 | ||
7db90f4a | 2098 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
a2f73b6c | 2099 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
c799ba6e JB |
2100 | pr_debug("Ignoring regulatory request set by %s since the driver uses its own custom regulatory domain\n", |
2101 | reg_initiator_name(initiator)); | |
14b9815a | 2102 | return true; |
926a0a09 LR |
2103 | } |
2104 | ||
fb1fc7ad LR |
2105 | /* |
2106 | * wiphy->regd will be set once the device has its own | |
2107 | * desired regulatory domain set | |
2108 | */ | |
fa1fb9cb | 2109 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
749b527b | 2110 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
c492db37 | 2111 | !is_world_regdom(lr->alpha2)) { |
c799ba6e JB |
2112 | pr_debug("Ignoring regulatory request set by %s since the driver requires its own regulatory domain to be set first\n", |
2113 | reg_initiator_name(initiator)); | |
14b9815a | 2114 | return true; |
926a0a09 LR |
2115 | } |
2116 | ||
c492db37 | 2117 | if (reg_request_cell_base(lr)) |
57b5ce07 LR |
2118 | return reg_dev_ignore_cell_hint(wiphy); |
2119 | ||
14b9815a LR |
2120 | return false; |
2121 | } | |
2122 | ||
3195e489 LR |
2123 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
2124 | { | |
2125 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); | |
2126 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); | |
2127 | struct regulatory_request *lr = get_last_request(); | |
2128 | ||
2129 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) | |
2130 | return true; | |
2131 | ||
2132 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && | |
a2f73b6c | 2133 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
3195e489 LR |
2134 | return true; |
2135 | ||
2136 | return false; | |
2137 | } | |
2138 | ||
1a919318 | 2139 | static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx, |
e38f8a7a LR |
2140 | struct reg_beacon *reg_beacon) |
2141 | { | |
e38f8a7a LR |
2142 | struct ieee80211_supported_band *sband; |
2143 | struct ieee80211_channel *chan; | |
6bad8766 LR |
2144 | bool channel_changed = false; |
2145 | struct ieee80211_channel chan_before; | |
e38f8a7a | 2146 | |
e38f8a7a LR |
2147 | sband = wiphy->bands[reg_beacon->chan.band]; |
2148 | chan = &sband->channels[chan_idx]; | |
2149 | ||
934f4c7d | 2150 | if (likely(!ieee80211_channel_equal(chan, ®_beacon->chan))) |
e38f8a7a LR |
2151 | return; |
2152 | ||
6bad8766 LR |
2153 | if (chan->beacon_found) |
2154 | return; | |
2155 | ||
2156 | chan->beacon_found = true; | |
2157 | ||
0f500a5f LR |
2158 | if (!reg_is_world_roaming(wiphy)) |
2159 | return; | |
2160 | ||
a2f73b6c | 2161 | if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS) |
37184244 LR |
2162 | return; |
2163 | ||
a48a52b7 | 2164 | chan_before = *chan; |
6bad8766 | 2165 | |
8fe02e16 LR |
2166 | if (chan->flags & IEEE80211_CHAN_NO_IR) { |
2167 | chan->flags &= ~IEEE80211_CHAN_NO_IR; | |
6bad8766 | 2168 | channel_changed = true; |
e38f8a7a LR |
2169 | } |
2170 | ||
6bad8766 LR |
2171 | if (channel_changed) |
2172 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); | |
e38f8a7a LR |
2173 | } |
2174 | ||
2175 | /* | |
2176 | * Called when a scan on a wiphy finds a beacon on | |
2177 | * new channel | |
2178 | */ | |
2179 | static void wiphy_update_new_beacon(struct wiphy *wiphy, | |
2180 | struct reg_beacon *reg_beacon) | |
2181 | { | |
2182 | unsigned int i; | |
2183 | struct ieee80211_supported_band *sband; | |
2184 | ||
e38f8a7a LR |
2185 | if (!wiphy->bands[reg_beacon->chan.band]) |
2186 | return; | |
2187 | ||
2188 | sband = wiphy->bands[reg_beacon->chan.band]; | |
2189 | ||
2190 | for (i = 0; i < sband->n_channels; i++) | |
2191 | handle_reg_beacon(wiphy, i, reg_beacon); | |
2192 | } | |
2193 | ||
2194 | /* | |
2195 | * Called upon reg changes or a new wiphy is added | |
2196 | */ | |
2197 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) | |
2198 | { | |
2199 | unsigned int i; | |
2200 | struct ieee80211_supported_band *sband; | |
2201 | struct reg_beacon *reg_beacon; | |
2202 | ||
e38f8a7a LR |
2203 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
2204 | if (!wiphy->bands[reg_beacon->chan.band]) | |
2205 | continue; | |
2206 | sband = wiphy->bands[reg_beacon->chan.band]; | |
2207 | for (i = 0; i < sband->n_channels; i++) | |
2208 | handle_reg_beacon(wiphy, i, reg_beacon); | |
2209 | } | |
2210 | } | |
2211 | ||
e38f8a7a LR |
2212 | /* Reap the advantages of previously found beacons */ |
2213 | static void reg_process_beacons(struct wiphy *wiphy) | |
2214 | { | |
b1ed8ddd LR |
2215 | /* |
2216 | * Means we are just firing up cfg80211, so no beacons would | |
2217 | * have been processed yet. | |
2218 | */ | |
2219 | if (!last_request) | |
2220 | return; | |
e38f8a7a LR |
2221 | wiphy_update_beacon_reg(wiphy); |
2222 | } | |
2223 | ||
1a919318 | 2224 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
038659e7 LR |
2225 | { |
2226 | if (!chan) | |
1a919318 | 2227 | return false; |
038659e7 | 2228 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
1a919318 | 2229 | return false; |
038659e7 | 2230 | /* This would happen when regulatory rules disallow HT40 completely */ |
55b183ad FF |
2231 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
2232 | return false; | |
2233 | return true; | |
038659e7 LR |
2234 | } |
2235 | ||
2236 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, | |
fdc9d7b2 | 2237 | struct ieee80211_channel *channel) |
038659e7 | 2238 | { |
fdc9d7b2 | 2239 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
038659e7 | 2240 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
4e0854a7 | 2241 | const struct ieee80211_regdomain *regd; |
038659e7 | 2242 | unsigned int i; |
4e0854a7 | 2243 | u32 flags; |
038659e7 | 2244 | |
1a919318 | 2245 | if (!is_ht40_allowed(channel)) { |
038659e7 LR |
2246 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
2247 | return; | |
2248 | } | |
2249 | ||
2250 | /* | |
2251 | * We need to ensure the extension channels exist to | |
2252 | * be able to use HT40- or HT40+, this finds them (or not) | |
2253 | */ | |
2254 | for (i = 0; i < sband->n_channels; i++) { | |
2255 | struct ieee80211_channel *c = &sband->channels[i]; | |
1a919318 | 2256 | |
038659e7 LR |
2257 | if (c->center_freq == (channel->center_freq - 20)) |
2258 | channel_before = c; | |
2259 | if (c->center_freq == (channel->center_freq + 20)) | |
2260 | channel_after = c; | |
2261 | } | |
2262 | ||
4e0854a7 EG |
2263 | flags = 0; |
2264 | regd = get_wiphy_regdom(wiphy); | |
2265 | if (regd) { | |
2266 | const struct ieee80211_reg_rule *reg_rule = | |
2267 | freq_reg_info_regd(MHZ_TO_KHZ(channel->center_freq), | |
2268 | regd, MHZ_TO_KHZ(20)); | |
2269 | ||
2270 | if (!IS_ERR(reg_rule)) | |
2271 | flags = reg_rule->flags; | |
2272 | } | |
2273 | ||
038659e7 LR |
2274 | /* |
2275 | * Please note that this assumes target bandwidth is 20 MHz, | |
2276 | * if that ever changes we also need to change the below logic | |
2277 | * to include that as well. | |
2278 | */ | |
4e0854a7 EG |
2279 | if (!is_ht40_allowed(channel_before) || |
2280 | flags & NL80211_RRF_NO_HT40MINUS) | |
689da1b3 | 2281 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
038659e7 | 2282 | else |
689da1b3 | 2283 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
038659e7 | 2284 | |
4e0854a7 EG |
2285 | if (!is_ht40_allowed(channel_after) || |
2286 | flags & NL80211_RRF_NO_HT40PLUS) | |
689da1b3 | 2287 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
038659e7 | 2288 | else |
689da1b3 | 2289 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
038659e7 LR |
2290 | } |
2291 | ||
2292 | static void reg_process_ht_flags_band(struct wiphy *wiphy, | |
fdc9d7b2 | 2293 | struct ieee80211_supported_band *sband) |
038659e7 LR |
2294 | { |
2295 | unsigned int i; | |
038659e7 | 2296 | |
fdc9d7b2 JB |
2297 | if (!sband) |
2298 | return; | |
038659e7 LR |
2299 | |
2300 | for (i = 0; i < sband->n_channels; i++) | |
fdc9d7b2 | 2301 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
038659e7 LR |
2302 | } |
2303 | ||
2304 | static void reg_process_ht_flags(struct wiphy *wiphy) | |
2305 | { | |
57fbcce3 | 2306 | enum nl80211_band band; |
038659e7 LR |
2307 | |
2308 | if (!wiphy) | |
2309 | return; | |
2310 | ||
57fbcce3 | 2311 | for (band = 0; band < NUM_NL80211_BANDS; band++) |
fdc9d7b2 | 2312 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); |
038659e7 LR |
2313 | } |
2314 | ||
0e3802db LR |
2315 | static void reg_call_notifier(struct wiphy *wiphy, |
2316 | struct regulatory_request *request) | |
2317 | { | |
2318 | if (wiphy->reg_notifier) | |
2319 | wiphy->reg_notifier(wiphy, request); | |
2320 | } | |
2321 | ||
ad932f04 AN |
2322 | static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev) |
2323 | { | |
f43e5210 | 2324 | struct cfg80211_chan_def chandef = {}; |
ad932f04 | 2325 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
20658702 | 2326 | enum nl80211_iftype iftype; |
ad932f04 AN |
2327 | |
2328 | wdev_lock(wdev); | |
20658702 | 2329 | iftype = wdev->iftype; |
ad932f04 | 2330 | |
20658702 | 2331 | /* make sure the interface is active */ |
ad932f04 | 2332 | if (!wdev->netdev || !netif_running(wdev->netdev)) |
20658702 | 2333 | goto wdev_inactive_unlock; |
ad932f04 | 2334 | |
20658702 | 2335 | switch (iftype) { |
ad932f04 AN |
2336 | case NL80211_IFTYPE_AP: |
2337 | case NL80211_IFTYPE_P2P_GO: | |
2338 | if (!wdev->beacon_interval) | |
20658702 AN |
2339 | goto wdev_inactive_unlock; |
2340 | chandef = wdev->chandef; | |
185076d6 AN |
2341 | break; |
2342 | case NL80211_IFTYPE_ADHOC: | |
2343 | if (!wdev->ssid_len) | |
20658702 AN |
2344 | goto wdev_inactive_unlock; |
2345 | chandef = wdev->chandef; | |
ad932f04 AN |
2346 | break; |
2347 | case NL80211_IFTYPE_STATION: | |
2348 | case NL80211_IFTYPE_P2P_CLIENT: | |
ad932f04 AN |
2349 | if (!wdev->current_bss || |
2350 | !wdev->current_bss->pub.channel) | |
20658702 | 2351 | goto wdev_inactive_unlock; |
ad932f04 | 2352 | |
20658702 AN |
2353 | if (!rdev->ops->get_channel || |
2354 | rdev_get_channel(rdev, wdev, &chandef)) | |
2355 | cfg80211_chandef_create(&chandef, | |
2356 | wdev->current_bss->pub.channel, | |
2357 | NL80211_CHAN_NO_HT); | |
ad932f04 AN |
2358 | break; |
2359 | case NL80211_IFTYPE_MONITOR: | |
2360 | case NL80211_IFTYPE_AP_VLAN: | |
2361 | case NL80211_IFTYPE_P2P_DEVICE: | |
2362 | /* no enforcement required */ | |
2363 | break; | |
2364 | default: | |
2365 | /* others not implemented for now */ | |
2366 | WARN_ON(1); | |
2367 | break; | |
2368 | } | |
2369 | ||
ad932f04 | 2370 | wdev_unlock(wdev); |
20658702 AN |
2371 | |
2372 | switch (iftype) { | |
2373 | case NL80211_IFTYPE_AP: | |
2374 | case NL80211_IFTYPE_P2P_GO: | |
2375 | case NL80211_IFTYPE_ADHOC: | |
923b352f | 2376 | return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype); |
20658702 AN |
2377 | case NL80211_IFTYPE_STATION: |
2378 | case NL80211_IFTYPE_P2P_CLIENT: | |
2379 | return cfg80211_chandef_usable(wiphy, &chandef, | |
2380 | IEEE80211_CHAN_DISABLED); | |
2381 | default: | |
2382 | break; | |
2383 | } | |
2384 | ||
2385 | return true; | |
2386 | ||
2387 | wdev_inactive_unlock: | |
2388 | wdev_unlock(wdev); | |
2389 | return true; | |
ad932f04 AN |
2390 | } |
2391 | ||
2392 | static void reg_leave_invalid_chans(struct wiphy *wiphy) | |
2393 | { | |
2394 | struct wireless_dev *wdev; | |
2395 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
2396 | ||
2397 | ASSERT_RTNL(); | |
2398 | ||
53873f13 | 2399 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) |
ad932f04 AN |
2400 | if (!reg_wdev_chan_valid(wiphy, wdev)) |
2401 | cfg80211_leave(rdev, wdev); | |
2402 | } | |
2403 | ||
2404 | static void reg_check_chans_work(struct work_struct *work) | |
2405 | { | |
2406 | struct cfg80211_registered_device *rdev; | |
2407 | ||
c799ba6e | 2408 | pr_debug("Verifying active interfaces after reg change\n"); |
ad932f04 AN |
2409 | rtnl_lock(); |
2410 | ||
2411 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) | |
2412 | if (!(rdev->wiphy.regulatory_flags & | |
2413 | REGULATORY_IGNORE_STALE_KICKOFF)) | |
2414 | reg_leave_invalid_chans(&rdev->wiphy); | |
2415 | ||
2416 | rtnl_unlock(); | |
2417 | } | |
2418 | ||
2419 | static void reg_check_channels(void) | |
2420 | { | |
2421 | /* | |
2422 | * Give usermode a chance to do something nicer (move to another | |
2423 | * channel, orderly disconnection), before forcing a disconnection. | |
2424 | */ | |
2425 | mod_delayed_work(system_power_efficient_wq, | |
2426 | ®_check_chans, | |
2427 | msecs_to_jiffies(REG_ENFORCE_GRACE_MS)); | |
2428 | } | |
2429 | ||
eac03e38 SN |
2430 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
2431 | enum nl80211_reg_initiator initiator) | |
b2e1b302 | 2432 | { |
57fbcce3 | 2433 | enum nl80211_band band; |
c492db37 | 2434 | struct regulatory_request *lr = get_last_request(); |
eac03e38 | 2435 | |
0e3802db LR |
2436 | if (ignore_reg_update(wiphy, initiator)) { |
2437 | /* | |
2438 | * Regulatory updates set by CORE are ignored for custom | |
2439 | * regulatory cards. Let us notify the changes to the driver, | |
2440 | * as some drivers used this to restore its orig_* reg domain. | |
2441 | */ | |
2442 | if (initiator == NL80211_REGDOM_SET_BY_CORE && | |
e31f6456 AS |
2443 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG && |
2444 | !(wiphy->regulatory_flags & | |
2445 | REGULATORY_WIPHY_SELF_MANAGED)) | |
0e3802db | 2446 | reg_call_notifier(wiphy, lr); |
a203c2aa | 2447 | return; |
0e3802db | 2448 | } |
a203c2aa | 2449 | |
c492db37 | 2450 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
b68e6b3b | 2451 | |
57fbcce3 | 2452 | for (band = 0; band < NUM_NL80211_BANDS; band++) |
fdc9d7b2 | 2453 | handle_band(wiphy, initiator, wiphy->bands[band]); |
a203c2aa | 2454 | |
e38f8a7a | 2455 | reg_process_beacons(wiphy); |
038659e7 | 2456 | reg_process_ht_flags(wiphy); |
0e3802db | 2457 | reg_call_notifier(wiphy, lr); |
b2e1b302 LR |
2458 | } |
2459 | ||
d7549cbb SN |
2460 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
2461 | { | |
2462 | struct cfg80211_registered_device *rdev; | |
4a38994f | 2463 | struct wiphy *wiphy; |
d7549cbb | 2464 | |
5fe231e8 | 2465 | ASSERT_RTNL(); |
458f4f9e | 2466 | |
4a38994f RM |
2467 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
2468 | wiphy = &rdev->wiphy; | |
2469 | wiphy_update_regulatory(wiphy, initiator); | |
4a38994f | 2470 | } |
ad932f04 AN |
2471 | |
2472 | reg_check_channels(); | |
d7549cbb SN |
2473 | } |
2474 | ||
1fa25e41 | 2475 | static void handle_channel_custom(struct wiphy *wiphy, |
fdc9d7b2 | 2476 | struct ieee80211_channel *chan, |
c4b9d655 GB |
2477 | const struct ieee80211_regdomain *regd, |
2478 | u32 min_bw) | |
1fa25e41 | 2479 | { |
038659e7 | 2480 | u32 bw_flags = 0; |
1fa25e41 LR |
2481 | const struct ieee80211_reg_rule *reg_rule = NULL; |
2482 | const struct ieee80211_power_rule *power_rule = NULL; | |
934f4c7d | 2483 | u32 bw, center_freq_khz; |
ac46d48e | 2484 | |
934f4c7d | 2485 | center_freq_khz = ieee80211_channel_to_khz(chan); |
c4b9d655 | 2486 | for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) { |
934f4c7d | 2487 | reg_rule = freq_reg_info_regd(center_freq_khz, regd, bw); |
4edd5698 MM |
2488 | if (!IS_ERR(reg_rule)) |
2489 | break; | |
2490 | } | |
1fa25e41 | 2491 | |
a7ee7d44 | 2492 | if (IS_ERR_OR_NULL(reg_rule)) { |
934f4c7d TP |
2493 | pr_debug("Disabling freq %d.%03d MHz as custom regd has no rule that fits it\n", |
2494 | chan->center_freq, chan->freq_offset); | |
db8dfee5 AN |
2495 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) { |
2496 | chan->flags |= IEEE80211_CHAN_DISABLED; | |
2497 | } else { | |
2498 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; | |
2499 | chan->flags = chan->orig_flags; | |
2500 | } | |
1fa25e41 LR |
2501 | return; |
2502 | } | |
2503 | ||
2504 | power_rule = ®_rule->power_rule; | |
1aeb135f | 2505 | bw_flags = reg_rule_to_chan_bw_flags(regd, reg_rule, chan); |
1fa25e41 | 2506 | |
2e18b38f | 2507 | chan->dfs_state_entered = jiffies; |
c7ab5081 AN |
2508 | chan->dfs_state = NL80211_DFS_USABLE; |
2509 | ||
2510 | chan->beacon_found = false; | |
db8dfee5 AN |
2511 | |
2512 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) | |
2513 | chan->flags = chan->orig_flags | bw_flags | | |
2514 | map_regdom_flags(reg_rule->flags); | |
2515 | else | |
2516 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; | |
2517 | ||
1fa25e41 | 2518 | chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
279f0f55 FF |
2519 | chan->max_reg_power = chan->max_power = |
2520 | (int) MBM_TO_DBM(power_rule->max_eirp); | |
2e18b38f AN |
2521 | |
2522 | if (chan->flags & IEEE80211_CHAN_RADAR) { | |
2523 | if (reg_rule->dfs_cac_ms) | |
2524 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; | |
2525 | else | |
2526 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; | |
2527 | } | |
2528 | ||
2529 | chan->max_power = chan->max_reg_power; | |
1fa25e41 LR |
2530 | } |
2531 | ||
fdc9d7b2 JB |
2532 | static void handle_band_custom(struct wiphy *wiphy, |
2533 | struct ieee80211_supported_band *sband, | |
1fa25e41 LR |
2534 | const struct ieee80211_regdomain *regd) |
2535 | { | |
2536 | unsigned int i; | |
1fa25e41 | 2537 | |
fdc9d7b2 JB |
2538 | if (!sband) |
2539 | return; | |
1fa25e41 | 2540 | |
c4b9d655 GB |
2541 | /* |
2542 | * We currently assume that you always want at least 20 MHz, | |
2543 | * otherwise channel 12 might get enabled if this rule is | |
2544 | * compatible to US, which permits 2402 - 2472 MHz. | |
2545 | */ | |
1fa25e41 | 2546 | for (i = 0; i < sband->n_channels; i++) |
c4b9d655 GB |
2547 | handle_channel_custom(wiphy, &sband->channels[i], regd, |
2548 | MHZ_TO_KHZ(20)); | |
1fa25e41 LR |
2549 | } |
2550 | ||
2551 | /* Used by drivers prior to wiphy registration */ | |
2552 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, | |
2553 | const struct ieee80211_regdomain *regd) | |
2554 | { | |
beee2469 | 2555 | const struct ieee80211_regdomain *new_regd, *tmp; |
57fbcce3 | 2556 | enum nl80211_band band; |
bbcf3f02 | 2557 | unsigned int bands_set = 0; |
ac46d48e | 2558 | |
a2f73b6c LR |
2559 | WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG), |
2560 | "wiphy should have REGULATORY_CUSTOM_REG\n"); | |
2561 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; | |
222ea581 | 2562 | |
57fbcce3 | 2563 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
bbcf3f02 LR |
2564 | if (!wiphy->bands[band]) |
2565 | continue; | |
fdc9d7b2 | 2566 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
bbcf3f02 | 2567 | bands_set++; |
b2e1b302 | 2568 | } |
bbcf3f02 LR |
2569 | |
2570 | /* | |
2571 | * no point in calling this if it won't have any effect | |
1a919318 | 2572 | * on your device's supported bands. |
bbcf3f02 LR |
2573 | */ |
2574 | WARN_ON(!bands_set); | |
beee2469 IP |
2575 | new_regd = reg_copy_regd(regd); |
2576 | if (IS_ERR(new_regd)) | |
2577 | return; | |
2578 | ||
51d62f2f IP |
2579 | rtnl_lock(); |
2580 | ||
beee2469 IP |
2581 | tmp = get_wiphy_regdom(wiphy); |
2582 | rcu_assign_pointer(wiphy->regd, new_regd); | |
2583 | rcu_free_regdom(tmp); | |
51d62f2f IP |
2584 | |
2585 | rtnl_unlock(); | |
b2e1b302 | 2586 | } |
1fa25e41 LR |
2587 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
2588 | ||
b2e253cf LR |
2589 | static void reg_set_request_processed(void) |
2590 | { | |
2591 | bool need_more_processing = false; | |
c492db37 | 2592 | struct regulatory_request *lr = get_last_request(); |
b2e253cf | 2593 | |
c492db37 | 2594 | lr->processed = true; |
b2e253cf LR |
2595 | |
2596 | spin_lock(®_requests_lock); | |
2597 | if (!list_empty(®_requests_list)) | |
2598 | need_more_processing = true; | |
2599 | spin_unlock(®_requests_lock); | |
2600 | ||
b6863036 | 2601 | cancel_crda_timeout(); |
a90c7a31 | 2602 | |
b2e253cf LR |
2603 | if (need_more_processing) |
2604 | schedule_work(®_work); | |
2605 | } | |
2606 | ||
b3eb7f3f LR |
2607 | /** |
2608 | * reg_process_hint_core - process core regulatory requests | |
726e6af9 | 2609 | * @core_request: a pending core regulatory request |
b3eb7f3f LR |
2610 | * |
2611 | * The wireless subsystem can use this function to process | |
2612 | * a regulatory request issued by the regulatory core. | |
b3eb7f3f | 2613 | */ |
d34265a3 JB |
2614 | static enum reg_request_treatment |
2615 | reg_process_hint_core(struct regulatory_request *core_request) | |
b3eb7f3f | 2616 | { |
cecbb069 | 2617 | if (reg_query_database(core_request)) { |
25b20dbd JB |
2618 | core_request->intersect = false; |
2619 | core_request->processed = false; | |
2620 | reg_update_last_request(core_request); | |
d34265a3 | 2621 | return REG_REQ_OK; |
25b20dbd | 2622 | } |
d34265a3 JB |
2623 | |
2624 | return REG_REQ_IGNORE; | |
b3eb7f3f LR |
2625 | } |
2626 | ||
0d97a619 LR |
2627 | static enum reg_request_treatment |
2628 | __reg_process_hint_user(struct regulatory_request *user_request) | |
2629 | { | |
2630 | struct regulatory_request *lr = get_last_request(); | |
2631 | ||
2632 | if (reg_request_cell_base(user_request)) | |
2633 | return reg_ignore_cell_hint(user_request); | |
2634 | ||
2635 | if (reg_request_cell_base(lr)) | |
2636 | return REG_REQ_IGNORE; | |
2637 | ||
2638 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
2639 | return REG_REQ_INTERSECT; | |
2640 | /* | |
2641 | * If the user knows better the user should set the regdom | |
2642 | * to their country before the IE is picked up | |
2643 | */ | |
2644 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && | |
2645 | lr->intersect) | |
2646 | return REG_REQ_IGNORE; | |
2647 | /* | |
2648 | * Process user requests only after previous user/driver/core | |
2649 | * requests have been processed | |
2650 | */ | |
2651 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || | |
2652 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || | |
2653 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && | |
2654 | regdom_changes(lr->alpha2)) | |
2655 | return REG_REQ_IGNORE; | |
2656 | ||
2657 | if (!regdom_changes(user_request->alpha2)) | |
2658 | return REG_REQ_ALREADY_SET; | |
2659 | ||
2660 | return REG_REQ_OK; | |
2661 | } | |
2662 | ||
2663 | /** | |
2664 | * reg_process_hint_user - process user regulatory requests | |
2665 | * @user_request: a pending user regulatory request | |
2666 | * | |
2667 | * The wireless subsystem can use this function to process | |
2668 | * a regulatory request initiated by userspace. | |
0d97a619 | 2669 | */ |
d34265a3 JB |
2670 | static enum reg_request_treatment |
2671 | reg_process_hint_user(struct regulatory_request *user_request) | |
0d97a619 LR |
2672 | { |
2673 | enum reg_request_treatment treatment; | |
0d97a619 LR |
2674 | |
2675 | treatment = __reg_process_hint_user(user_request); | |
2676 | if (treatment == REG_REQ_IGNORE || | |
d34265a3 JB |
2677 | treatment == REG_REQ_ALREADY_SET) |
2678 | return REG_REQ_IGNORE; | |
0d97a619 | 2679 | |
0d97a619 LR |
2680 | user_request->intersect = treatment == REG_REQ_INTERSECT; |
2681 | user_request->processed = false; | |
5ad6ef5e | 2682 | |
cecbb069 | 2683 | if (reg_query_database(user_request)) { |
25b20dbd JB |
2684 | reg_update_last_request(user_request); |
2685 | user_alpha2[0] = user_request->alpha2[0]; | |
2686 | user_alpha2[1] = user_request->alpha2[1]; | |
d34265a3 | 2687 | return REG_REQ_OK; |
25b20dbd | 2688 | } |
d34265a3 JB |
2689 | |
2690 | return REG_REQ_IGNORE; | |
0d97a619 LR |
2691 | } |
2692 | ||
21636c7f LR |
2693 | static enum reg_request_treatment |
2694 | __reg_process_hint_driver(struct regulatory_request *driver_request) | |
2695 | { | |
2696 | struct regulatory_request *lr = get_last_request(); | |
2697 | ||
2698 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { | |
2699 | if (regdom_changes(driver_request->alpha2)) | |
2700 | return REG_REQ_OK; | |
2701 | return REG_REQ_ALREADY_SET; | |
2702 | } | |
2703 | ||
2704 | /* | |
2705 | * This would happen if you unplug and plug your card | |
2706 | * back in or if you add a new device for which the previously | |
2707 | * loaded card also agrees on the regulatory domain. | |
2708 | */ | |
2709 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && | |
2710 | !regdom_changes(driver_request->alpha2)) | |
2711 | return REG_REQ_ALREADY_SET; | |
2712 | ||
2713 | return REG_REQ_INTERSECT; | |
2714 | } | |
2715 | ||
2716 | /** | |
2717 | * reg_process_hint_driver - process driver regulatory requests | |
726e6af9 | 2718 | * @wiphy: the wireless device for the regulatory request |
21636c7f LR |
2719 | * @driver_request: a pending driver regulatory request |
2720 | * | |
2721 | * The wireless subsystem can use this function to process | |
2722 | * a regulatory request issued by an 802.11 driver. | |
2723 | * | |
2724 | * Returns one of the different reg request treatment values. | |
2725 | */ | |
2726 | static enum reg_request_treatment | |
2727 | reg_process_hint_driver(struct wiphy *wiphy, | |
2728 | struct regulatory_request *driver_request) | |
2729 | { | |
34f05f54 | 2730 | const struct ieee80211_regdomain *regd, *tmp; |
21636c7f | 2731 | enum reg_request_treatment treatment; |
21636c7f LR |
2732 | |
2733 | treatment = __reg_process_hint_driver(driver_request); | |
2734 | ||
2735 | switch (treatment) { | |
2736 | case REG_REQ_OK: | |
2737 | break; | |
2738 | case REG_REQ_IGNORE: | |
d34265a3 | 2739 | return REG_REQ_IGNORE; |
21636c7f | 2740 | case REG_REQ_INTERSECT: |
21636c7f LR |
2741 | case REG_REQ_ALREADY_SET: |
2742 | regd = reg_copy_regd(get_cfg80211_regdom()); | |
d34265a3 JB |
2743 | if (IS_ERR(regd)) |
2744 | return REG_REQ_IGNORE; | |
34f05f54 AN |
2745 | |
2746 | tmp = get_wiphy_regdom(wiphy); | |
21636c7f | 2747 | rcu_assign_pointer(wiphy->regd, regd); |
34f05f54 | 2748 | rcu_free_regdom(tmp); |
21636c7f LR |
2749 | } |
2750 | ||
21636c7f LR |
2751 | |
2752 | driver_request->intersect = treatment == REG_REQ_INTERSECT; | |
2753 | driver_request->processed = false; | |
5ad6ef5e | 2754 | |
21636c7f LR |
2755 | /* |
2756 | * Since CRDA will not be called in this case as we already | |
2757 | * have applied the requested regulatory domain before we just | |
2758 | * inform userspace we have processed the request | |
2759 | */ | |
2760 | if (treatment == REG_REQ_ALREADY_SET) { | |
2761 | nl80211_send_reg_change_event(driver_request); | |
25b20dbd | 2762 | reg_update_last_request(driver_request); |
21636c7f | 2763 | reg_set_request_processed(); |
480908a7 | 2764 | return REG_REQ_ALREADY_SET; |
21636c7f LR |
2765 | } |
2766 | ||
d34265a3 | 2767 | if (reg_query_database(driver_request)) { |
25b20dbd | 2768 | reg_update_last_request(driver_request); |
d34265a3 JB |
2769 | return REG_REQ_OK; |
2770 | } | |
25b20dbd | 2771 | |
d34265a3 | 2772 | return REG_REQ_IGNORE; |
21636c7f LR |
2773 | } |
2774 | ||
b23e7a9e LR |
2775 | static enum reg_request_treatment |
2776 | __reg_process_hint_country_ie(struct wiphy *wiphy, | |
2777 | struct regulatory_request *country_ie_request) | |
2778 | { | |
2779 | struct wiphy *last_wiphy = NULL; | |
2780 | struct regulatory_request *lr = get_last_request(); | |
2781 | ||
2782 | if (reg_request_cell_base(lr)) { | |
2783 | /* Trust a Cell base station over the AP's country IE */ | |
2784 | if (regdom_changes(country_ie_request->alpha2)) | |
2785 | return REG_REQ_IGNORE; | |
2786 | return REG_REQ_ALREADY_SET; | |
2a901468 LR |
2787 | } else { |
2788 | if (wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_IGNORE) | |
2789 | return REG_REQ_IGNORE; | |
b23e7a9e LR |
2790 | } |
2791 | ||
b23e7a9e LR |
2792 | if (unlikely(!is_an_alpha2(country_ie_request->alpha2))) |
2793 | return -EINVAL; | |
2f1c6c57 LR |
2794 | |
2795 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
2796 | return REG_REQ_OK; | |
2797 | ||
2798 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); | |
2799 | ||
2800 | if (last_wiphy != wiphy) { | |
b23e7a9e | 2801 | /* |
2f1c6c57 LR |
2802 | * Two cards with two APs claiming different |
2803 | * Country IE alpha2s. We could | |
2804 | * intersect them, but that seems unlikely | |
2805 | * to be correct. Reject second one for now. | |
b23e7a9e | 2806 | */ |
2f1c6c57 LR |
2807 | if (regdom_changes(country_ie_request->alpha2)) |
2808 | return REG_REQ_IGNORE; | |
b23e7a9e LR |
2809 | return REG_REQ_ALREADY_SET; |
2810 | } | |
70dcec5a EG |
2811 | |
2812 | if (regdom_changes(country_ie_request->alpha2)) | |
2f1c6c57 LR |
2813 | return REG_REQ_OK; |
2814 | return REG_REQ_ALREADY_SET; | |
b23e7a9e LR |
2815 | } |
2816 | ||
d1c96a9a | 2817 | /** |
b23e7a9e | 2818 | * reg_process_hint_country_ie - process regulatory requests from country IEs |
726e6af9 | 2819 | * @wiphy: the wireless device for the regulatory request |
b23e7a9e | 2820 | * @country_ie_request: a regulatory request from a country IE |
d1c96a9a | 2821 | * |
b23e7a9e LR |
2822 | * The wireless subsystem can use this function to process |
2823 | * a regulatory request issued by a country Information Element. | |
d1c96a9a | 2824 | * |
2f92212b | 2825 | * Returns one of the different reg request treatment values. |
d1c96a9a | 2826 | */ |
2f92212b | 2827 | static enum reg_request_treatment |
b23e7a9e LR |
2828 | reg_process_hint_country_ie(struct wiphy *wiphy, |
2829 | struct regulatory_request *country_ie_request) | |
b2e1b302 | 2830 | { |
2f92212b | 2831 | enum reg_request_treatment treatment; |
761cf7ec | 2832 | |
b23e7a9e | 2833 | treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); |
9c96477d | 2834 | |
2f92212b | 2835 | switch (treatment) { |
2f92212b JB |
2836 | case REG_REQ_OK: |
2837 | break; | |
b23e7a9e | 2838 | case REG_REQ_IGNORE: |
d34265a3 | 2839 | return REG_REQ_IGNORE; |
b23e7a9e | 2840 | case REG_REQ_ALREADY_SET: |
c888393b | 2841 | reg_free_request(country_ie_request); |
480908a7 | 2842 | return REG_REQ_ALREADY_SET; |
b23e7a9e | 2843 | case REG_REQ_INTERSECT: |
fb1fc7ad | 2844 | /* |
b23e7a9e LR |
2845 | * This doesn't happen yet, not sure we |
2846 | * ever want to support it for this case. | |
fb1fc7ad | 2847 | */ |
8db0c433 | 2848 | WARN_ONCE(1, "Unexpected intersection for country elements"); |
d34265a3 | 2849 | return REG_REQ_IGNORE; |
3e0c3ff3 | 2850 | } |
b2e1b302 | 2851 | |
b23e7a9e LR |
2852 | country_ie_request->intersect = false; |
2853 | country_ie_request->processed = false; | |
5ad6ef5e | 2854 | |
d34265a3 | 2855 | if (reg_query_database(country_ie_request)) { |
25b20dbd | 2856 | reg_update_last_request(country_ie_request); |
d34265a3 JB |
2857 | return REG_REQ_OK; |
2858 | } | |
3e0c3ff3 | 2859 | |
d34265a3 | 2860 | return REG_REQ_IGNORE; |
b2e1b302 LR |
2861 | } |
2862 | ||
89766727 VT |
2863 | bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2) |
2864 | { | |
2865 | const struct ieee80211_regdomain *wiphy1_regd = NULL; | |
2866 | const struct ieee80211_regdomain *wiphy2_regd = NULL; | |
2867 | const struct ieee80211_regdomain *cfg80211_regd = NULL; | |
2868 | bool dfs_domain_same; | |
2869 | ||
2870 | rcu_read_lock(); | |
2871 | ||
2872 | cfg80211_regd = rcu_dereference(cfg80211_regdomain); | |
2873 | wiphy1_regd = rcu_dereference(wiphy1->regd); | |
2874 | if (!wiphy1_regd) | |
2875 | wiphy1_regd = cfg80211_regd; | |
2876 | ||
2877 | wiphy2_regd = rcu_dereference(wiphy2->regd); | |
2878 | if (!wiphy2_regd) | |
2879 | wiphy2_regd = cfg80211_regd; | |
2880 | ||
2881 | dfs_domain_same = wiphy1_regd->dfs_region == wiphy2_regd->dfs_region; | |
2882 | ||
2883 | rcu_read_unlock(); | |
2884 | ||
2885 | return dfs_domain_same; | |
2886 | } | |
2887 | ||
2888 | static void reg_copy_dfs_chan_state(struct ieee80211_channel *dst_chan, | |
2889 | struct ieee80211_channel *src_chan) | |
2890 | { | |
2891 | if (!(dst_chan->flags & IEEE80211_CHAN_RADAR) || | |
2892 | !(src_chan->flags & IEEE80211_CHAN_RADAR)) | |
2893 | return; | |
2894 | ||
2895 | if (dst_chan->flags & IEEE80211_CHAN_DISABLED || | |
2896 | src_chan->flags & IEEE80211_CHAN_DISABLED) | |
2897 | return; | |
2898 | ||
2899 | if (src_chan->center_freq == dst_chan->center_freq && | |
2900 | dst_chan->dfs_state == NL80211_DFS_USABLE) { | |
2901 | dst_chan->dfs_state = src_chan->dfs_state; | |
2902 | dst_chan->dfs_state_entered = src_chan->dfs_state_entered; | |
2903 | } | |
2904 | } | |
2905 | ||
2906 | static void wiphy_share_dfs_chan_state(struct wiphy *dst_wiphy, | |
2907 | struct wiphy *src_wiphy) | |
2908 | { | |
2909 | struct ieee80211_supported_band *src_sband, *dst_sband; | |
2910 | struct ieee80211_channel *src_chan, *dst_chan; | |
2911 | int i, j, band; | |
2912 | ||
2913 | if (!reg_dfs_domain_same(dst_wiphy, src_wiphy)) | |
2914 | return; | |
2915 | ||
2916 | for (band = 0; band < NUM_NL80211_BANDS; band++) { | |
2917 | dst_sband = dst_wiphy->bands[band]; | |
2918 | src_sband = src_wiphy->bands[band]; | |
2919 | if (!dst_sband || !src_sband) | |
2920 | continue; | |
2921 | ||
2922 | for (i = 0; i < dst_sband->n_channels; i++) { | |
2923 | dst_chan = &dst_sband->channels[i]; | |
2924 | for (j = 0; j < src_sband->n_channels; j++) { | |
2925 | src_chan = &src_sband->channels[j]; | |
2926 | reg_copy_dfs_chan_state(dst_chan, src_chan); | |
2927 | } | |
2928 | } | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | static void wiphy_all_share_dfs_chan_state(struct wiphy *wiphy) | |
2933 | { | |
2934 | struct cfg80211_registered_device *rdev; | |
2935 | ||
2936 | ASSERT_RTNL(); | |
2937 | ||
2938 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
2939 | if (wiphy == &rdev->wiphy) | |
2940 | continue; | |
2941 | wiphy_share_dfs_chan_state(wiphy, &rdev->wiphy); | |
2942 | } | |
2943 | } | |
2944 | ||
30a548c7 | 2945 | /* This processes *all* regulatory hints */ |
1daa37c7 | 2946 | static void reg_process_hint(struct regulatory_request *reg_request) |
fe33eb39 | 2947 | { |
fe33eb39 | 2948 | struct wiphy *wiphy = NULL; |
b3eb7f3f | 2949 | enum reg_request_treatment treatment; |
1db58529 | 2950 | enum nl80211_reg_initiator initiator = reg_request->initiator; |
fe33eb39 | 2951 | |
f4173766 | 2952 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
fe33eb39 LR |
2953 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
2954 | ||
1db58529 | 2955 | switch (initiator) { |
b3eb7f3f | 2956 | case NL80211_REGDOM_SET_BY_CORE: |
d34265a3 JB |
2957 | treatment = reg_process_hint_core(reg_request); |
2958 | break; | |
b3eb7f3f | 2959 | case NL80211_REGDOM_SET_BY_USER: |
d34265a3 JB |
2960 | treatment = reg_process_hint_user(reg_request); |
2961 | break; | |
b3eb7f3f | 2962 | case NL80211_REGDOM_SET_BY_DRIVER: |
772f0389 IP |
2963 | if (!wiphy) |
2964 | goto out_free; | |
21636c7f LR |
2965 | treatment = reg_process_hint_driver(wiphy, reg_request); |
2966 | break; | |
b3eb7f3f | 2967 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
772f0389 IP |
2968 | if (!wiphy) |
2969 | goto out_free; | |
b23e7a9e | 2970 | treatment = reg_process_hint_country_ie(wiphy, reg_request); |
b3eb7f3f LR |
2971 | break; |
2972 | default: | |
1db58529 | 2973 | WARN(1, "invalid initiator %d\n", initiator); |
772f0389 | 2974 | goto out_free; |
b3eb7f3f LR |
2975 | } |
2976 | ||
d34265a3 JB |
2977 | if (treatment == REG_REQ_IGNORE) |
2978 | goto out_free; | |
2979 | ||
480908a7 JB |
2980 | WARN(treatment != REG_REQ_OK && treatment != REG_REQ_ALREADY_SET, |
2981 | "unexpected treatment value %d\n", treatment); | |
2982 | ||
841b351c JL |
2983 | /* This is required so that the orig_* parameters are saved. |
2984 | * NOTE: treatment must be set for any case that reaches here! | |
2985 | */ | |
b23e7a9e | 2986 | if (treatment == REG_REQ_ALREADY_SET && wiphy && |
ad932f04 | 2987 | wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
1db58529 | 2988 | wiphy_update_regulatory(wiphy, initiator); |
89766727 | 2989 | wiphy_all_share_dfs_chan_state(wiphy); |
ad932f04 AN |
2990 | reg_check_channels(); |
2991 | } | |
772f0389 IP |
2992 | |
2993 | return; | |
2994 | ||
2995 | out_free: | |
c888393b | 2996 | reg_free_request(reg_request); |
fe33eb39 LR |
2997 | } |
2998 | ||
aced43ce AS |
2999 | static void notify_self_managed_wiphys(struct regulatory_request *request) |
3000 | { | |
3001 | struct cfg80211_registered_device *rdev; | |
3002 | struct wiphy *wiphy; | |
3003 | ||
3004 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
3005 | wiphy = &rdev->wiphy; | |
3006 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && | |
c82c06ce | 3007 | request->initiator == NL80211_REGDOM_SET_BY_USER) |
aced43ce AS |
3008 | reg_call_notifier(wiphy, request); |
3009 | } | |
3010 | } | |
3011 | ||
b2e253cf LR |
3012 | /* |
3013 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* | |
3014 | * Regulatory hints come on a first come first serve basis and we | |
3015 | * must process each one atomically. | |
3016 | */ | |
fe33eb39 | 3017 | static void reg_process_pending_hints(void) |
b0e2880b | 3018 | { |
c492db37 | 3019 | struct regulatory_request *reg_request, *lr; |
fe33eb39 | 3020 | |
c492db37 | 3021 | lr = get_last_request(); |
b0e2880b | 3022 | |
b2e253cf | 3023 | /* When last_request->processed becomes true this will be rescheduled */ |
c492db37 | 3024 | if (lr && !lr->processed) { |
0d31d4db | 3025 | pr_debug("Pending regulatory request, waiting for it to be processed...\n"); |
5fe231e8 | 3026 | return; |
b2e253cf LR |
3027 | } |
3028 | ||
fe33eb39 | 3029 | spin_lock(®_requests_lock); |
fe33eb39 | 3030 | |
b2e253cf | 3031 | if (list_empty(®_requests_list)) { |
d951c1dd | 3032 | spin_unlock(®_requests_lock); |
5fe231e8 | 3033 | return; |
fe33eb39 | 3034 | } |
b2e253cf LR |
3035 | |
3036 | reg_request = list_first_entry(®_requests_list, | |
3037 | struct regulatory_request, | |
3038 | list); | |
3039 | list_del_init(®_request->list); | |
3040 | ||
fe33eb39 | 3041 | spin_unlock(®_requests_lock); |
b0e2880b | 3042 | |
aced43ce | 3043 | notify_self_managed_wiphys(reg_request); |
ef51fb1d | 3044 | |
1daa37c7 | 3045 | reg_process_hint(reg_request); |
2e54a689 B |
3046 | |
3047 | lr = get_last_request(); | |
3048 | ||
3049 | spin_lock(®_requests_lock); | |
3050 | if (!list_empty(®_requests_list) && lr && lr->processed) | |
3051 | schedule_work(®_work); | |
3052 | spin_unlock(®_requests_lock); | |
fe33eb39 LR |
3053 | } |
3054 | ||
e38f8a7a LR |
3055 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
3056 | static void reg_process_pending_beacon_hints(void) | |
3057 | { | |
79c97e97 | 3058 | struct cfg80211_registered_device *rdev; |
e38f8a7a LR |
3059 | struct reg_beacon *pending_beacon, *tmp; |
3060 | ||
e38f8a7a LR |
3061 | /* This goes through the _pending_ beacon list */ |
3062 | spin_lock_bh(®_pending_beacons_lock); | |
3063 | ||
e38f8a7a LR |
3064 | list_for_each_entry_safe(pending_beacon, tmp, |
3065 | ®_pending_beacons, list) { | |
e38f8a7a LR |
3066 | list_del_init(&pending_beacon->list); |
3067 | ||
3068 | /* Applies the beacon hint to current wiphys */ | |
79c97e97 JB |
3069 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
3070 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); | |
e38f8a7a LR |
3071 | |
3072 | /* Remembers the beacon hint for new wiphys or reg changes */ | |
3073 | list_add_tail(&pending_beacon->list, ®_beacon_list); | |
3074 | } | |
3075 | ||
3076 | spin_unlock_bh(®_pending_beacons_lock); | |
e38f8a7a LR |
3077 | } |
3078 | ||
b0d7aa59 JD |
3079 | static void reg_process_self_managed_hints(void) |
3080 | { | |
3081 | struct cfg80211_registered_device *rdev; | |
3082 | struct wiphy *wiphy; | |
3083 | const struct ieee80211_regdomain *tmp; | |
3084 | const struct ieee80211_regdomain *regd; | |
57fbcce3 | 3085 | enum nl80211_band band; |
b0d7aa59 JD |
3086 | struct regulatory_request request = {}; |
3087 | ||
3088 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
3089 | wiphy = &rdev->wiphy; | |
3090 | ||
3091 | spin_lock(®_requests_lock); | |
3092 | regd = rdev->requested_regd; | |
3093 | rdev->requested_regd = NULL; | |
3094 | spin_unlock(®_requests_lock); | |
3095 | ||
3096 | if (regd == NULL) | |
3097 | continue; | |
3098 | ||
3099 | tmp = get_wiphy_regdom(wiphy); | |
3100 | rcu_assign_pointer(wiphy->regd, regd); | |
3101 | rcu_free_regdom(tmp); | |
3102 | ||
57fbcce3 | 3103 | for (band = 0; band < NUM_NL80211_BANDS; band++) |
b0d7aa59 JD |
3104 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
3105 | ||
3106 | reg_process_ht_flags(wiphy); | |
3107 | ||
3108 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
3109 | request.alpha2[0] = regd->alpha2[0]; | |
3110 | request.alpha2[1] = regd->alpha2[1]; | |
3111 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
3112 | ||
3113 | nl80211_send_wiphy_reg_change_event(&request); | |
3114 | } | |
3115 | ||
3116 | reg_check_channels(); | |
3117 | } | |
3118 | ||
fe33eb39 LR |
3119 | static void reg_todo(struct work_struct *work) |
3120 | { | |
5fe231e8 | 3121 | rtnl_lock(); |
fe33eb39 | 3122 | reg_process_pending_hints(); |
e38f8a7a | 3123 | reg_process_pending_beacon_hints(); |
b0d7aa59 | 3124 | reg_process_self_managed_hints(); |
5fe231e8 | 3125 | rtnl_unlock(); |
fe33eb39 LR |
3126 | } |
3127 | ||
fe33eb39 LR |
3128 | static void queue_regulatory_request(struct regulatory_request *request) |
3129 | { | |
d4f2c881 JB |
3130 | request->alpha2[0] = toupper(request->alpha2[0]); |
3131 | request->alpha2[1] = toupper(request->alpha2[1]); | |
c61029c7 | 3132 | |
fe33eb39 LR |
3133 | spin_lock(®_requests_lock); |
3134 | list_add_tail(&request->list, ®_requests_list); | |
3135 | spin_unlock(®_requests_lock); | |
3136 | ||
3137 | schedule_work(®_work); | |
3138 | } | |
3139 | ||
09d989d1 LR |
3140 | /* |
3141 | * Core regulatory hint -- happens during cfg80211_init() | |
3142 | * and when we restore regulatory settings. | |
3143 | */ | |
ba25c141 LR |
3144 | static int regulatory_hint_core(const char *alpha2) |
3145 | { | |
3146 | struct regulatory_request *request; | |
3147 | ||
1a919318 | 3148 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
ba25c141 LR |
3149 | if (!request) |
3150 | return -ENOMEM; | |
3151 | ||
3152 | request->alpha2[0] = alpha2[0]; | |
3153 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 3154 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
24f33e64 | 3155 | request->wiphy_idx = WIPHY_IDX_INVALID; |
ba25c141 | 3156 | |
31e99729 | 3157 | queue_regulatory_request(request); |
5078b2e3 | 3158 | |
fe33eb39 | 3159 | return 0; |
ba25c141 LR |
3160 | } |
3161 | ||
fe33eb39 | 3162 | /* User hints */ |
57b5ce07 LR |
3163 | int regulatory_hint_user(const char *alpha2, |
3164 | enum nl80211_user_reg_hint_type user_reg_hint_type) | |
b2e1b302 | 3165 | { |
fe33eb39 LR |
3166 | struct regulatory_request *request; |
3167 | ||
fdc9d7b2 JB |
3168 | if (WARN_ON(!alpha2)) |
3169 | return -EINVAL; | |
b2e1b302 | 3170 | |
47caf685 JB |
3171 | if (!is_world_regdom(alpha2) && !is_an_alpha2(alpha2)) |
3172 | return -EINVAL; | |
3173 | ||
fe33eb39 LR |
3174 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
3175 | if (!request) | |
3176 | return -ENOMEM; | |
3177 | ||
f4173766 | 3178 | request->wiphy_idx = WIPHY_IDX_INVALID; |
fe33eb39 LR |
3179 | request->alpha2[0] = alpha2[0]; |
3180 | request->alpha2[1] = alpha2[1]; | |
e12822e1 | 3181 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
57b5ce07 | 3182 | request->user_reg_hint_type = user_reg_hint_type; |
fe33eb39 | 3183 | |
c37722bd | 3184 | /* Allow calling CRDA again */ |
b6863036 | 3185 | reset_crda_timeouts(); |
c37722bd | 3186 | |
fe33eb39 LR |
3187 | queue_regulatory_request(request); |
3188 | ||
3189 | return 0; | |
3190 | } | |
3191 | ||
05050753 | 3192 | int regulatory_hint_indoor(bool is_indoor, u32 portid) |
52616f2b | 3193 | { |
05050753 | 3194 | spin_lock(®_indoor_lock); |
52616f2b | 3195 | |
05050753 I |
3196 | /* It is possible that more than one user space process is trying to |
3197 | * configure the indoor setting. To handle such cases, clear the indoor | |
3198 | * setting in case that some process does not think that the device | |
3199 | * is operating in an indoor environment. In addition, if a user space | |
3200 | * process indicates that it is controlling the indoor setting, save its | |
3201 | * portid, i.e., make it the owner. | |
3202 | */ | |
3203 | reg_is_indoor = is_indoor; | |
3204 | if (reg_is_indoor) { | |
3205 | if (!reg_is_indoor_portid) | |
3206 | reg_is_indoor_portid = portid; | |
3207 | } else { | |
3208 | reg_is_indoor_portid = 0; | |
3209 | } | |
52616f2b | 3210 | |
05050753 | 3211 | spin_unlock(®_indoor_lock); |
52616f2b | 3212 | |
05050753 I |
3213 | if (!is_indoor) |
3214 | reg_check_channels(); | |
52616f2b IP |
3215 | |
3216 | return 0; | |
3217 | } | |
3218 | ||
05050753 I |
3219 | void regulatory_netlink_notify(u32 portid) |
3220 | { | |
3221 | spin_lock(®_indoor_lock); | |
3222 | ||
3223 | if (reg_is_indoor_portid != portid) { | |
3224 | spin_unlock(®_indoor_lock); | |
3225 | return; | |
3226 | } | |
3227 | ||
3228 | reg_is_indoor = false; | |
3229 | reg_is_indoor_portid = 0; | |
3230 | ||
3231 | spin_unlock(®_indoor_lock); | |
3232 | ||
3233 | reg_check_channels(); | |
3234 | } | |
3235 | ||
fe33eb39 LR |
3236 | /* Driver hints */ |
3237 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) | |
3238 | { | |
3239 | struct regulatory_request *request; | |
3240 | ||
fdc9d7b2 JB |
3241 | if (WARN_ON(!alpha2 || !wiphy)) |
3242 | return -EINVAL; | |
fe33eb39 | 3243 | |
4f7b9140 LR |
3244 | wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG; |
3245 | ||
fe33eb39 LR |
3246 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
3247 | if (!request) | |
3248 | return -ENOMEM; | |
3249 | ||
3250 | request->wiphy_idx = get_wiphy_idx(wiphy); | |
3251 | ||
fe33eb39 LR |
3252 | request->alpha2[0] = alpha2[0]; |
3253 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 3254 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
fe33eb39 | 3255 | |
c37722bd | 3256 | /* Allow calling CRDA again */ |
b6863036 | 3257 | reset_crda_timeouts(); |
c37722bd | 3258 | |
fe33eb39 LR |
3259 | queue_regulatory_request(request); |
3260 | ||
3261 | return 0; | |
b2e1b302 LR |
3262 | } |
3263 | EXPORT_SYMBOL(regulatory_hint); | |
3264 | ||
57fbcce3 | 3265 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum nl80211_band band, |
789fd033 | 3266 | const u8 *country_ie, u8 country_ie_len) |
3f2355cb | 3267 | { |
3f2355cb | 3268 | char alpha2[2]; |
3f2355cb | 3269 | enum environment_cap env = ENVIRON_ANY; |
db2424c5 | 3270 | struct regulatory_request *request = NULL, *lr; |
d335fe63 | 3271 | |
3f2355cb LR |
3272 | /* IE len must be evenly divisible by 2 */ |
3273 | if (country_ie_len & 0x01) | |
db2424c5 | 3274 | return; |
3f2355cb LR |
3275 | |
3276 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
db2424c5 JB |
3277 | return; |
3278 | ||
3279 | request = kzalloc(sizeof(*request), GFP_KERNEL); | |
3280 | if (!request) | |
3281 | return; | |
3f2355cb | 3282 | |
3f2355cb LR |
3283 | alpha2[0] = country_ie[0]; |
3284 | alpha2[1] = country_ie[1]; | |
3285 | ||
3286 | if (country_ie[2] == 'I') | |
3287 | env = ENVIRON_INDOOR; | |
3288 | else if (country_ie[2] == 'O') | |
3289 | env = ENVIRON_OUTDOOR; | |
3290 | ||
db2424c5 JB |
3291 | rcu_read_lock(); |
3292 | lr = get_last_request(); | |
3293 | ||
3294 | if (unlikely(!lr)) | |
3295 | goto out; | |
3296 | ||
fb1fc7ad | 3297 | /* |
8b19e6ca | 3298 | * We will run this only upon a successful connection on cfg80211. |
4b44c8bc | 3299 | * We leave conflict resolution to the workqueue, where can hold |
5fe231e8 | 3300 | * the RTNL. |
fb1fc7ad | 3301 | */ |
c492db37 JB |
3302 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
3303 | lr->wiphy_idx != WIPHY_IDX_INVALID) | |
4b44c8bc | 3304 | goto out; |
3f2355cb | 3305 | |
fe33eb39 | 3306 | request->wiphy_idx = get_wiphy_idx(wiphy); |
4f366c5d JL |
3307 | request->alpha2[0] = alpha2[0]; |
3308 | request->alpha2[1] = alpha2[1]; | |
7db90f4a | 3309 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
fe33eb39 LR |
3310 | request->country_ie_env = env; |
3311 | ||
c37722bd | 3312 | /* Allow calling CRDA again */ |
b6863036 | 3313 | reset_crda_timeouts(); |
c37722bd | 3314 | |
fe33eb39 | 3315 | queue_regulatory_request(request); |
db2424c5 | 3316 | request = NULL; |
3f2355cb | 3317 | out: |
db2424c5 JB |
3318 | kfree(request); |
3319 | rcu_read_unlock(); | |
3f2355cb | 3320 | } |
b2e1b302 | 3321 | |
09d989d1 LR |
3322 | static void restore_alpha2(char *alpha2, bool reset_user) |
3323 | { | |
3324 | /* indicates there is no alpha2 to consider for restoration */ | |
3325 | alpha2[0] = '9'; | |
3326 | alpha2[1] = '7'; | |
3327 | ||
3328 | /* The user setting has precedence over the module parameter */ | |
3329 | if (is_user_regdom_saved()) { | |
3330 | /* Unless we're asked to ignore it and reset it */ | |
3331 | if (reset_user) { | |
c799ba6e | 3332 | pr_debug("Restoring regulatory settings including user preference\n"); |
09d989d1 LR |
3333 | user_alpha2[0] = '9'; |
3334 | user_alpha2[1] = '7'; | |
3335 | ||
3336 | /* | |
3337 | * If we're ignoring user settings, we still need to | |
3338 | * check the module parameter to ensure we put things | |
3339 | * back as they were for a full restore. | |
3340 | */ | |
3341 | if (!is_world_regdom(ieee80211_regdom)) { | |
c799ba6e JB |
3342 | pr_debug("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
3343 | ieee80211_regdom[0], ieee80211_regdom[1]); | |
09d989d1 LR |
3344 | alpha2[0] = ieee80211_regdom[0]; |
3345 | alpha2[1] = ieee80211_regdom[1]; | |
3346 | } | |
3347 | } else { | |
c799ba6e JB |
3348 | pr_debug("Restoring regulatory settings while preserving user preference for: %c%c\n", |
3349 | user_alpha2[0], user_alpha2[1]); | |
09d989d1 LR |
3350 | alpha2[0] = user_alpha2[0]; |
3351 | alpha2[1] = user_alpha2[1]; | |
3352 | } | |
3353 | } else if (!is_world_regdom(ieee80211_regdom)) { | |
c799ba6e JB |
3354 | pr_debug("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
3355 | ieee80211_regdom[0], ieee80211_regdom[1]); | |
09d989d1 LR |
3356 | alpha2[0] = ieee80211_regdom[0]; |
3357 | alpha2[1] = ieee80211_regdom[1]; | |
3358 | } else | |
c799ba6e | 3359 | pr_debug("Restoring regulatory settings\n"); |
09d989d1 LR |
3360 | } |
3361 | ||
5ce543d1 RM |
3362 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
3363 | { | |
3364 | struct ieee80211_supported_band *sband; | |
57fbcce3 | 3365 | enum nl80211_band band; |
5ce543d1 RM |
3366 | struct ieee80211_channel *chan; |
3367 | int i; | |
3368 | ||
57fbcce3 | 3369 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
5ce543d1 RM |
3370 | sband = wiphy->bands[band]; |
3371 | if (!sband) | |
3372 | continue; | |
3373 | for (i = 0; i < sband->n_channels; i++) { | |
3374 | chan = &sband->channels[i]; | |
3375 | chan->flags = chan->orig_flags; | |
3376 | chan->max_antenna_gain = chan->orig_mag; | |
3377 | chan->max_power = chan->orig_mpwr; | |
899852af | 3378 | chan->beacon_found = false; |
5ce543d1 RM |
3379 | } |
3380 | } | |
3381 | } | |
3382 | ||
09d989d1 LR |
3383 | /* |
3384 | * Restoring regulatory settings involves ingoring any | |
3385 | * possibly stale country IE information and user regulatory | |
3386 | * settings if so desired, this includes any beacon hints | |
3387 | * learned as we could have traveled outside to another country | |
3388 | * after disconnection. To restore regulatory settings we do | |
3389 | * exactly what we did at bootup: | |
3390 | * | |
3391 | * - send a core regulatory hint | |
3392 | * - send a user regulatory hint if applicable | |
3393 | * | |
3394 | * Device drivers that send a regulatory hint for a specific country | |
cc5a639b | 3395 | * keep their own regulatory domain on wiphy->regd so that does |
09d989d1 LR |
3396 | * not need to be remembered. |
3397 | */ | |
e646a025 | 3398 | static void restore_regulatory_settings(bool reset_user, bool cached) |
09d989d1 LR |
3399 | { |
3400 | char alpha2[2]; | |
cee0bec5 | 3401 | char world_alpha2[2]; |
09d989d1 | 3402 | struct reg_beacon *reg_beacon, *btmp; |
14609555 | 3403 | LIST_HEAD(tmp_reg_req_list); |
5ce543d1 | 3404 | struct cfg80211_registered_device *rdev; |
09d989d1 | 3405 | |
5fe231e8 JB |
3406 | ASSERT_RTNL(); |
3407 | ||
05050753 I |
3408 | /* |
3409 | * Clear the indoor setting in case that it is not controlled by user | |
3410 | * space, as otherwise there is no guarantee that the device is still | |
3411 | * operating in an indoor environment. | |
3412 | */ | |
3413 | spin_lock(®_indoor_lock); | |
3414 | if (reg_is_indoor && !reg_is_indoor_portid) { | |
3415 | reg_is_indoor = false; | |
3416 | reg_check_channels(); | |
3417 | } | |
3418 | spin_unlock(®_indoor_lock); | |
52616f2b | 3419 | |
2d319867 | 3420 | reset_regdomains(true, &world_regdom); |
09d989d1 LR |
3421 | restore_alpha2(alpha2, reset_user); |
3422 | ||
14609555 LR |
3423 | /* |
3424 | * If there's any pending requests we simply | |
3425 | * stash them to a temporary pending queue and | |
3426 | * add then after we've restored regulatory | |
3427 | * settings. | |
3428 | */ | |
3429 | spin_lock(®_requests_lock); | |
eeca9fce | 3430 | list_splice_tail_init(®_requests_list, &tmp_reg_req_list); |
14609555 LR |
3431 | spin_unlock(®_requests_lock); |
3432 | ||
09d989d1 LR |
3433 | /* Clear beacon hints */ |
3434 | spin_lock_bh(®_pending_beacons_lock); | |
fea9bced JB |
3435 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
3436 | list_del(®_beacon->list); | |
3437 | kfree(reg_beacon); | |
09d989d1 LR |
3438 | } |
3439 | spin_unlock_bh(®_pending_beacons_lock); | |
3440 | ||
fea9bced JB |
3441 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
3442 | list_del(®_beacon->list); | |
3443 | kfree(reg_beacon); | |
09d989d1 LR |
3444 | } |
3445 | ||
3446 | /* First restore to the basic regulatory settings */ | |
379b82f4 JB |
3447 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
3448 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; | |
09d989d1 | 3449 | |
5ce543d1 | 3450 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
b0d7aa59 JD |
3451 | if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
3452 | continue; | |
a2f73b6c | 3453 | if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG) |
5ce543d1 RM |
3454 | restore_custom_reg_settings(&rdev->wiphy); |
3455 | } | |
3456 | ||
e646a025 JB |
3457 | if (cached && (!is_an_alpha2(alpha2) || |
3458 | !IS_ERR_OR_NULL(cfg80211_user_regdom))) { | |
3459 | reset_regdomains(false, cfg80211_world_regdom); | |
3460 | update_all_wiphy_regulatory(NL80211_REGDOM_SET_BY_CORE); | |
3461 | print_regdomain(get_cfg80211_regdom()); | |
3462 | nl80211_send_reg_change_event(&core_request_world); | |
3463 | reg_set_request_processed(); | |
09d989d1 | 3464 | |
e646a025 JB |
3465 | if (is_an_alpha2(alpha2) && |
3466 | !regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER)) { | |
3467 | struct regulatory_request *ureq; | |
3468 | ||
3469 | spin_lock(®_requests_lock); | |
3470 | ureq = list_last_entry(®_requests_list, | |
3471 | struct regulatory_request, | |
3472 | list); | |
3473 | list_del(&ureq->list); | |
3474 | spin_unlock(®_requests_lock); | |
3475 | ||
3476 | notify_self_managed_wiphys(ureq); | |
3477 | reg_update_last_request(ureq); | |
3478 | set_regdom(reg_copy_regd(cfg80211_user_regdom), | |
3479 | REGD_SOURCE_CACHED); | |
3480 | } | |
3481 | } else { | |
3482 | regulatory_hint_core(world_alpha2); | |
3483 | ||
3484 | /* | |
3485 | * This restores the ieee80211_regdom module parameter | |
3486 | * preference or the last user requested regulatory | |
3487 | * settings, user regulatory settings takes precedence. | |
3488 | */ | |
3489 | if (is_an_alpha2(alpha2)) | |
3490 | regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER); | |
3491 | } | |
09d989d1 | 3492 | |
14609555 | 3493 | spin_lock(®_requests_lock); |
11cff96c | 3494 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
14609555 LR |
3495 | spin_unlock(®_requests_lock); |
3496 | ||
c799ba6e | 3497 | pr_debug("Kicking the queue\n"); |
14609555 LR |
3498 | |
3499 | schedule_work(®_work); | |
3500 | } | |
09d989d1 | 3501 | |
7417844b RKS |
3502 | static bool is_wiphy_all_set_reg_flag(enum ieee80211_regulatory_flags flag) |
3503 | { | |
3504 | struct cfg80211_registered_device *rdev; | |
3505 | struct wireless_dev *wdev; | |
3506 | ||
3507 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
3508 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { | |
3509 | wdev_lock(wdev); | |
3510 | if (!(wdev->wiphy->regulatory_flags & flag)) { | |
3511 | wdev_unlock(wdev); | |
3512 | return false; | |
3513 | } | |
3514 | wdev_unlock(wdev); | |
3515 | } | |
3516 | } | |
3517 | ||
3518 | return true; | |
3519 | } | |
3520 | ||
09d989d1 LR |
3521 | void regulatory_hint_disconnect(void) |
3522 | { | |
7417844b RKS |
3523 | /* Restore of regulatory settings is not required when wiphy(s) |
3524 | * ignore IE from connected access point but clearance of beacon hints | |
3525 | * is required when wiphy(s) supports beacon hints. | |
3526 | */ | |
3527 | if (is_wiphy_all_set_reg_flag(REGULATORY_COUNTRY_IE_IGNORE)) { | |
3528 | struct reg_beacon *reg_beacon, *btmp; | |
3529 | ||
3530 | if (is_wiphy_all_set_reg_flag(REGULATORY_DISABLE_BEACON_HINTS)) | |
3531 | return; | |
3532 | ||
3533 | spin_lock_bh(®_pending_beacons_lock); | |
3534 | list_for_each_entry_safe(reg_beacon, btmp, | |
3535 | ®_pending_beacons, list) { | |
3536 | list_del(®_beacon->list); | |
3537 | kfree(reg_beacon); | |
3538 | } | |
3539 | spin_unlock_bh(®_pending_beacons_lock); | |
3540 | ||
3541 | list_for_each_entry_safe(reg_beacon, btmp, | |
3542 | ®_beacon_list, list) { | |
3543 | list_del(®_beacon->list); | |
3544 | kfree(reg_beacon); | |
3545 | } | |
3546 | ||
3547 | return; | |
3548 | } | |
3549 | ||
c799ba6e | 3550 | pr_debug("All devices are disconnected, going to restore regulatory settings\n"); |
e646a025 | 3551 | restore_regulatory_settings(false, true); |
09d989d1 LR |
3552 | } |
3553 | ||
9cf0a0b4 | 3554 | static bool freq_is_chan_12_13_14(u32 freq) |
e38f8a7a | 3555 | { |
57fbcce3 JB |
3556 | if (freq == ieee80211_channel_to_frequency(12, NL80211_BAND_2GHZ) || |
3557 | freq == ieee80211_channel_to_frequency(13, NL80211_BAND_2GHZ) || | |
3558 | freq == ieee80211_channel_to_frequency(14, NL80211_BAND_2GHZ)) | |
e38f8a7a LR |
3559 | return true; |
3560 | return false; | |
3561 | } | |
3562 | ||
3ebfa6e7 LR |
3563 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
3564 | { | |
3565 | struct reg_beacon *pending_beacon; | |
3566 | ||
3567 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) | |
934f4c7d TP |
3568 | if (ieee80211_channel_equal(beacon_chan, |
3569 | &pending_beacon->chan)) | |
3ebfa6e7 LR |
3570 | return true; |
3571 | return false; | |
3572 | } | |
3573 | ||
e38f8a7a LR |
3574 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
3575 | struct ieee80211_channel *beacon_chan, | |
3576 | gfp_t gfp) | |
3577 | { | |
3578 | struct reg_beacon *reg_beacon; | |
3ebfa6e7 | 3579 | bool processing; |
e38f8a7a | 3580 | |
1a919318 JB |
3581 | if (beacon_chan->beacon_found || |
3582 | beacon_chan->flags & IEEE80211_CHAN_RADAR || | |
57fbcce3 | 3583 | (beacon_chan->band == NL80211_BAND_2GHZ && |
1a919318 | 3584 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
e38f8a7a LR |
3585 | return 0; |
3586 | ||
3ebfa6e7 LR |
3587 | spin_lock_bh(®_pending_beacons_lock); |
3588 | processing = pending_reg_beacon(beacon_chan); | |
3589 | spin_unlock_bh(®_pending_beacons_lock); | |
3590 | ||
3591 | if (processing) | |
e38f8a7a LR |
3592 | return 0; |
3593 | ||
3594 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); | |
3595 | if (!reg_beacon) | |
3596 | return -ENOMEM; | |
3597 | ||
934f4c7d TP |
3598 | pr_debug("Found new beacon on frequency: %d.%03d MHz (Ch %d) on %s\n", |
3599 | beacon_chan->center_freq, beacon_chan->freq_offset, | |
3600 | ieee80211_freq_khz_to_channel( | |
3601 | ieee80211_channel_to_khz(beacon_chan)), | |
c799ba6e | 3602 | wiphy_name(wiphy)); |
4113f751 | 3603 | |
e38f8a7a | 3604 | memcpy(®_beacon->chan, beacon_chan, |
1a919318 | 3605 | sizeof(struct ieee80211_channel)); |
e38f8a7a LR |
3606 | |
3607 | /* | |
3608 | * Since we can be called from BH or and non-BH context | |
3609 | * we must use spin_lock_bh() | |
3610 | */ | |
3611 | spin_lock_bh(®_pending_beacons_lock); | |
3612 | list_add_tail(®_beacon->list, ®_pending_beacons); | |
3613 | spin_unlock_bh(®_pending_beacons_lock); | |
3614 | ||
3615 | schedule_work(®_work); | |
3616 | ||
3617 | return 0; | |
3618 | } | |
3619 | ||
a3d2eaf0 | 3620 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
b2e1b302 LR |
3621 | { |
3622 | unsigned int i; | |
a3d2eaf0 JB |
3623 | const struct ieee80211_reg_rule *reg_rule = NULL; |
3624 | const struct ieee80211_freq_range *freq_range = NULL; | |
3625 | const struct ieee80211_power_rule *power_rule = NULL; | |
089027e5 | 3626 | char bw[32], cac_time[32]; |
b2e1b302 | 3627 | |
94c4fd64 | 3628 | pr_debug(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)\n"); |
b2e1b302 LR |
3629 | |
3630 | for (i = 0; i < rd->n_reg_rules; i++) { | |
3631 | reg_rule = &rd->reg_rules[i]; | |
3632 | freq_range = ®_rule->freq_range; | |
3633 | power_rule = ®_rule->power_rule; | |
3634 | ||
b0dfd2ea | 3635 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
db18d20d | 3636 | snprintf(bw, sizeof(bw), "%d KHz, %u KHz AUTO", |
b0dfd2ea | 3637 | freq_range->max_bandwidth_khz, |
97524820 JD |
3638 | reg_get_max_bandwidth(rd, reg_rule)); |
3639 | else | |
b0dfd2ea | 3640 | snprintf(bw, sizeof(bw), "%d KHz", |
97524820 JD |
3641 | freq_range->max_bandwidth_khz); |
3642 | ||
089027e5 JD |
3643 | if (reg_rule->flags & NL80211_RRF_DFS) |
3644 | scnprintf(cac_time, sizeof(cac_time), "%u s", | |
3645 | reg_rule->dfs_cac_ms/1000); | |
3646 | else | |
3647 | scnprintf(cac_time, sizeof(cac_time), "N/A"); | |
3648 | ||
3649 | ||
fb1fc7ad LR |
3650 | /* |
3651 | * There may not be documentation for max antenna gain | |
3652 | * in certain regions | |
3653 | */ | |
b2e1b302 | 3654 | if (power_rule->max_antenna_gain) |
94c4fd64 | 3655 | pr_debug(" (%d KHz - %d KHz @ %s), (%d mBi, %d mBm), (%s)\n", |
b2e1b302 LR |
3656 | freq_range->start_freq_khz, |
3657 | freq_range->end_freq_khz, | |
97524820 | 3658 | bw, |
b2e1b302 | 3659 | power_rule->max_antenna_gain, |
089027e5 JD |
3660 | power_rule->max_eirp, |
3661 | cac_time); | |
b2e1b302 | 3662 | else |
94c4fd64 | 3663 | pr_debug(" (%d KHz - %d KHz @ %s), (N/A, %d mBm), (%s)\n", |
b2e1b302 LR |
3664 | freq_range->start_freq_khz, |
3665 | freq_range->end_freq_khz, | |
97524820 | 3666 | bw, |
089027e5 JD |
3667 | power_rule->max_eirp, |
3668 | cac_time); | |
b2e1b302 LR |
3669 | } |
3670 | } | |
3671 | ||
4c7d3982 | 3672 | bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region) |
8b60b078 LR |
3673 | { |
3674 | switch (dfs_region) { | |
3675 | case NL80211_DFS_UNSET: | |
3676 | case NL80211_DFS_FCC: | |
3677 | case NL80211_DFS_ETSI: | |
3678 | case NL80211_DFS_JP: | |
3679 | return true; | |
3680 | default: | |
4a22b00b | 3681 | pr_debug("Ignoring unknown DFS master region: %d\n", dfs_region); |
8b60b078 LR |
3682 | return false; |
3683 | } | |
3684 | } | |
3685 | ||
a3d2eaf0 | 3686 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
b2e1b302 | 3687 | { |
c492db37 | 3688 | struct regulatory_request *lr = get_last_request(); |
b2e1b302 | 3689 | |
3f2355cb | 3690 | if (is_intersected_alpha2(rd->alpha2)) { |
c492db37 | 3691 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
79c97e97 | 3692 | struct cfg80211_registered_device *rdev; |
c492db37 | 3693 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
79c97e97 | 3694 | if (rdev) { |
94c4fd64 | 3695 | pr_debug("Current regulatory domain updated by AP to: %c%c\n", |
79c97e97 JB |
3696 | rdev->country_ie_alpha2[0], |
3697 | rdev->country_ie_alpha2[1]); | |
3f2355cb | 3698 | } else |
94c4fd64 | 3699 | pr_debug("Current regulatory domain intersected:\n"); |
3f2355cb | 3700 | } else |
94c4fd64 | 3701 | pr_debug("Current regulatory domain intersected:\n"); |
1a919318 | 3702 | } else if (is_world_regdom(rd->alpha2)) { |
94c4fd64 | 3703 | pr_debug("World regulatory domain updated:\n"); |
1a919318 | 3704 | } else { |
b2e1b302 | 3705 | if (is_unknown_alpha2(rd->alpha2)) |
94c4fd64 | 3706 | pr_debug("Regulatory domain changed to driver built-in settings (unknown country)\n"); |
57b5ce07 | 3707 | else { |
c492db37 | 3708 | if (reg_request_cell_base(lr)) |
94c4fd64 | 3709 | pr_debug("Regulatory domain changed to country: %c%c by Cell Station\n", |
57b5ce07 LR |
3710 | rd->alpha2[0], rd->alpha2[1]); |
3711 | else | |
94c4fd64 | 3712 | pr_debug("Regulatory domain changed to country: %c%c\n", |
57b5ce07 LR |
3713 | rd->alpha2[0], rd->alpha2[1]); |
3714 | } | |
b2e1b302 | 3715 | } |
1a919318 | 3716 | |
94c4fd64 | 3717 | pr_debug(" DFS Master region: %s", reg_dfs_region_str(rd->dfs_region)); |
b2e1b302 LR |
3718 | print_rd_rules(rd); |
3719 | } | |
3720 | ||
2df78167 | 3721 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
b2e1b302 | 3722 | { |
94c4fd64 | 3723 | pr_debug("Regulatory domain: %c%c\n", rd->alpha2[0], rd->alpha2[1]); |
b2e1b302 LR |
3724 | print_rd_rules(rd); |
3725 | } | |
3726 | ||
3b9e5aca LR |
3727 | static int reg_set_rd_core(const struct ieee80211_regdomain *rd) |
3728 | { | |
3729 | if (!is_world_regdom(rd->alpha2)) | |
3730 | return -EINVAL; | |
3731 | update_world_regdomain(rd); | |
3732 | return 0; | |
3733 | } | |
3734 | ||
84721d44 LR |
3735 | static int reg_set_rd_user(const struct ieee80211_regdomain *rd, |
3736 | struct regulatory_request *user_request) | |
3737 | { | |
3738 | const struct ieee80211_regdomain *intersected_rd = NULL; | |
3739 | ||
84721d44 LR |
3740 | if (!regdom_changes(rd->alpha2)) |
3741 | return -EALREADY; | |
3742 | ||
3743 | if (!is_valid_rd(rd)) { | |
94c4fd64 DY |
3744 | pr_err("Invalid regulatory domain detected: %c%c\n", |
3745 | rd->alpha2[0], rd->alpha2[1]); | |
84721d44 LR |
3746 | print_regdomain_info(rd); |
3747 | return -EINVAL; | |
3748 | } | |
3749 | ||
3750 | if (!user_request->intersect) { | |
3751 | reset_regdomains(false, rd); | |
3752 | return 0; | |
3753 | } | |
3754 | ||
3755 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); | |
3756 | if (!intersected_rd) | |
3757 | return -EINVAL; | |
3758 | ||
3759 | kfree(rd); | |
3760 | rd = NULL; | |
3761 | reset_regdomains(false, intersected_rd); | |
3762 | ||
3763 | return 0; | |
3764 | } | |
3765 | ||
f5fe3247 LR |
3766 | static int reg_set_rd_driver(const struct ieee80211_regdomain *rd, |
3767 | struct regulatory_request *driver_request) | |
b2e1b302 | 3768 | { |
e9763c3c | 3769 | const struct ieee80211_regdomain *regd; |
9c96477d | 3770 | const struct ieee80211_regdomain *intersected_rd = NULL; |
f5fe3247 | 3771 | const struct ieee80211_regdomain *tmp; |
806a9e39 | 3772 | struct wiphy *request_wiphy; |
6913b49a | 3773 | |
f5fe3247 | 3774 | if (is_world_regdom(rd->alpha2)) |
b2e1b302 LR |
3775 | return -EINVAL; |
3776 | ||
f5fe3247 LR |
3777 | if (!regdom_changes(rd->alpha2)) |
3778 | return -EALREADY; | |
b2e1b302 | 3779 | |
8375af3b | 3780 | if (!is_valid_rd(rd)) { |
94c4fd64 DY |
3781 | pr_err("Invalid regulatory domain detected: %c%c\n", |
3782 | rd->alpha2[0], rd->alpha2[1]); | |
8375af3b LR |
3783 | print_regdomain_info(rd); |
3784 | return -EINVAL; | |
b2e1b302 LR |
3785 | } |
3786 | ||
f5fe3247 | 3787 | request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx); |
922ec58c | 3788 | if (!request_wiphy) |
de3584bd | 3789 | return -ENODEV; |
806a9e39 | 3790 | |
f5fe3247 | 3791 | if (!driver_request->intersect) { |
558f6d32 LR |
3792 | if (request_wiphy->regd) |
3793 | return -EALREADY; | |
3e0c3ff3 | 3794 | |
e9763c3c JB |
3795 | regd = reg_copy_regd(rd); |
3796 | if (IS_ERR(regd)) | |
3797 | return PTR_ERR(regd); | |
3e0c3ff3 | 3798 | |
458f4f9e | 3799 | rcu_assign_pointer(request_wiphy->regd, regd); |
379b82f4 | 3800 | reset_regdomains(false, rd); |
b8295acd LR |
3801 | return 0; |
3802 | } | |
3803 | ||
f5fe3247 LR |
3804 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
3805 | if (!intersected_rd) | |
3806 | return -EINVAL; | |
b8295acd | 3807 | |
f5fe3247 LR |
3808 | /* |
3809 | * We can trash what CRDA provided now. | |
3810 | * However if a driver requested this specific regulatory | |
3811 | * domain we keep it for its private use | |
3812 | */ | |
3813 | tmp = get_wiphy_regdom(request_wiphy); | |
3814 | rcu_assign_pointer(request_wiphy->regd, rd); | |
3815 | rcu_free_regdom(tmp); | |
b8295acd | 3816 | |
f5fe3247 | 3817 | rd = NULL; |
b7566fc3 | 3818 | |
f5fe3247 | 3819 | reset_regdomains(false, intersected_rd); |
3e0c3ff3 | 3820 | |
f5fe3247 LR |
3821 | return 0; |
3822 | } | |
3823 | ||
01992406 LR |
3824 | static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd, |
3825 | struct regulatory_request *country_ie_request) | |
f5fe3247 LR |
3826 | { |
3827 | struct wiphy *request_wiphy; | |
b8295acd | 3828 | |
f5fe3247 LR |
3829 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
3830 | !is_unknown_alpha2(rd->alpha2)) | |
3831 | return -EINVAL; | |
b8295acd | 3832 | |
f5fe3247 LR |
3833 | /* |
3834 | * Lets only bother proceeding on the same alpha2 if the current | |
3835 | * rd is non static (it means CRDA was present and was used last) | |
3836 | * and the pending request came in from a country IE | |
3837 | */ | |
3838 | ||
3839 | if (!is_valid_rd(rd)) { | |
94c4fd64 DY |
3840 | pr_err("Invalid regulatory domain detected: %c%c\n", |
3841 | rd->alpha2[0], rd->alpha2[1]); | |
f5fe3247 LR |
3842 | print_regdomain_info(rd); |
3843 | return -EINVAL; | |
9c96477d LR |
3844 | } |
3845 | ||
01992406 | 3846 | request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx); |
922ec58c | 3847 | if (!request_wiphy) |
f5fe3247 | 3848 | return -ENODEV; |
b2e1b302 | 3849 | |
01992406 | 3850 | if (country_ie_request->intersect) |
f5fe3247 LR |
3851 | return -EINVAL; |
3852 | ||
3853 | reset_regdomains(false, rd); | |
3854 | return 0; | |
3855 | } | |
b2e1b302 | 3856 | |
fb1fc7ad LR |
3857 | /* |
3858 | * Use this call to set the current regulatory domain. Conflicts with | |
b2e1b302 | 3859 | * multiple drivers can be ironed out later. Caller must've already |
458f4f9e | 3860 | * kmalloc'd the rd structure. |
fb1fc7ad | 3861 | */ |
c37722bd I |
3862 | int set_regdom(const struct ieee80211_regdomain *rd, |
3863 | enum ieee80211_regd_source regd_src) | |
b2e1b302 | 3864 | { |
c492db37 | 3865 | struct regulatory_request *lr; |
092008ab | 3866 | bool user_reset = false; |
b2e1b302 LR |
3867 | int r; |
3868 | ||
e646a025 JB |
3869 | if (IS_ERR_OR_NULL(rd)) |
3870 | return -ENODATA; | |
3871 | ||
3b9e5aca LR |
3872 | if (!reg_is_valid_request(rd->alpha2)) { |
3873 | kfree(rd); | |
3874 | return -EINVAL; | |
3875 | } | |
3876 | ||
c37722bd | 3877 | if (regd_src == REGD_SOURCE_CRDA) |
b6863036 | 3878 | reset_crda_timeouts(); |
c37722bd | 3879 | |
c492db37 | 3880 | lr = get_last_request(); |
abc7381b | 3881 | |
b2e1b302 | 3882 | /* Note that this doesn't update the wiphys, this is done below */ |
3b9e5aca LR |
3883 | switch (lr->initiator) { |
3884 | case NL80211_REGDOM_SET_BY_CORE: | |
3885 | r = reg_set_rd_core(rd); | |
3886 | break; | |
3887 | case NL80211_REGDOM_SET_BY_USER: | |
e646a025 | 3888 | cfg80211_save_user_regdom(rd); |
84721d44 | 3889 | r = reg_set_rd_user(rd, lr); |
092008ab | 3890 | user_reset = true; |
84721d44 | 3891 | break; |
3b9e5aca | 3892 | case NL80211_REGDOM_SET_BY_DRIVER: |
f5fe3247 LR |
3893 | r = reg_set_rd_driver(rd, lr); |
3894 | break; | |
3b9e5aca | 3895 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
01992406 | 3896 | r = reg_set_rd_country_ie(rd, lr); |
3b9e5aca LR |
3897 | break; |
3898 | default: | |
3899 | WARN(1, "invalid initiator %d\n", lr->initiator); | |
09d11800 | 3900 | kfree(rd); |
3b9e5aca LR |
3901 | return -EINVAL; |
3902 | } | |
3903 | ||
d2372b31 | 3904 | if (r) { |
092008ab JD |
3905 | switch (r) { |
3906 | case -EALREADY: | |
95908535 | 3907 | reg_set_request_processed(); |
092008ab JD |
3908 | break; |
3909 | default: | |
3910 | /* Back to world regulatory in case of errors */ | |
e646a025 | 3911 | restore_regulatory_settings(user_reset, false); |
092008ab | 3912 | } |
95908535 | 3913 | |
d2372b31 | 3914 | kfree(rd); |
38fd2143 | 3915 | return r; |
d2372b31 | 3916 | } |
b2e1b302 | 3917 | |
b2e1b302 | 3918 | /* This would make this whole thing pointless */ |
38fd2143 JB |
3919 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
3920 | return -EINVAL; | |
b2e1b302 LR |
3921 | |
3922 | /* update all wiphys now with the new established regulatory domain */ | |
c492db37 | 3923 | update_all_wiphy_regulatory(lr->initiator); |
b2e1b302 | 3924 | |
458f4f9e | 3925 | print_regdomain(get_cfg80211_regdom()); |
b2e1b302 | 3926 | |
c492db37 | 3927 | nl80211_send_reg_change_event(lr); |
73d54c9e | 3928 | |
b2e253cf LR |
3929 | reg_set_request_processed(); |
3930 | ||
38fd2143 | 3931 | return 0; |
b2e1b302 LR |
3932 | } |
3933 | ||
2c3e861c AN |
3934 | static int __regulatory_set_wiphy_regd(struct wiphy *wiphy, |
3935 | struct ieee80211_regdomain *rd) | |
b0d7aa59 JD |
3936 | { |
3937 | const struct ieee80211_regdomain *regd; | |
3938 | const struct ieee80211_regdomain *prev_regd; | |
3939 | struct cfg80211_registered_device *rdev; | |
3940 | ||
3941 | if (WARN_ON(!wiphy || !rd)) | |
3942 | return -EINVAL; | |
3943 | ||
3944 | if (WARN(!(wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED), | |
3945 | "wiphy should have REGULATORY_WIPHY_SELF_MANAGED\n")) | |
3946 | return -EPERM; | |
3947 | ||
3948 | if (WARN(!is_valid_rd(rd), "Invalid regulatory domain detected\n")) { | |
3949 | print_regdomain_info(rd); | |
3950 | return -EINVAL; | |
3951 | } | |
3952 | ||
3953 | regd = reg_copy_regd(rd); | |
3954 | if (IS_ERR(regd)) | |
3955 | return PTR_ERR(regd); | |
3956 | ||
3957 | rdev = wiphy_to_rdev(wiphy); | |
3958 | ||
3959 | spin_lock(®_requests_lock); | |
3960 | prev_regd = rdev->requested_regd; | |
3961 | rdev->requested_regd = regd; | |
3962 | spin_unlock(®_requests_lock); | |
3963 | ||
3964 | kfree(prev_regd); | |
2c3e861c AN |
3965 | return 0; |
3966 | } | |
3967 | ||
3968 | int regulatory_set_wiphy_regd(struct wiphy *wiphy, | |
3969 | struct ieee80211_regdomain *rd) | |
3970 | { | |
3971 | int ret = __regulatory_set_wiphy_regd(wiphy, rd); | |
3972 | ||
3973 | if (ret) | |
3974 | return ret; | |
b0d7aa59 JD |
3975 | |
3976 | schedule_work(®_work); | |
3977 | return 0; | |
3978 | } | |
3979 | EXPORT_SYMBOL(regulatory_set_wiphy_regd); | |
3980 | ||
2c3e861c AN |
3981 | int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, |
3982 | struct ieee80211_regdomain *rd) | |
3983 | { | |
3984 | int ret; | |
3985 | ||
3986 | ASSERT_RTNL(); | |
3987 | ||
3988 | ret = __regulatory_set_wiphy_regd(wiphy, rd); | |
3989 | if (ret) | |
3990 | return ret; | |
3991 | ||
3992 | /* process the request immediately */ | |
3993 | reg_process_self_managed_hints(); | |
3994 | return 0; | |
3995 | } | |
3996 | EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl); | |
3997 | ||
57b5ce07 LR |
3998 | void wiphy_regulatory_register(struct wiphy *wiphy) |
3999 | { | |
aced43ce | 4000 | struct regulatory_request *lr = get_last_request(); |
23df0b73 | 4001 | |
aced43ce AS |
4002 | /* self-managed devices ignore beacon hints and country IE */ |
4003 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) { | |
b0d7aa59 JD |
4004 | wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS | |
4005 | REGULATORY_COUNTRY_IE_IGNORE; | |
4006 | ||
aced43ce AS |
4007 | /* |
4008 | * The last request may have been received before this | |
4009 | * registration call. Call the driver notifier if | |
8772eed9 | 4010 | * initiator is USER. |
aced43ce | 4011 | */ |
8772eed9 | 4012 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER) |
aced43ce AS |
4013 | reg_call_notifier(wiphy, lr); |
4014 | } | |
4015 | ||
57b5ce07 LR |
4016 | if (!reg_dev_ignore_cell_hint(wiphy)) |
4017 | reg_num_devs_support_basehint++; | |
4018 | ||
23df0b73 | 4019 | wiphy_update_regulatory(wiphy, lr->initiator); |
89766727 | 4020 | wiphy_all_share_dfs_chan_state(wiphy); |
57b5ce07 LR |
4021 | } |
4022 | ||
bfead080 | 4023 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
3f2355cb | 4024 | { |
0ad8acaf | 4025 | struct wiphy *request_wiphy = NULL; |
c492db37 | 4026 | struct regulatory_request *lr; |
761cf7ec | 4027 | |
c492db37 | 4028 | lr = get_last_request(); |
abc7381b | 4029 | |
57b5ce07 LR |
4030 | if (!reg_dev_ignore_cell_hint(wiphy)) |
4031 | reg_num_devs_support_basehint--; | |
4032 | ||
458f4f9e | 4033 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
34dd886c | 4034 | RCU_INIT_POINTER(wiphy->regd, NULL); |
0ef9ccdd | 4035 | |
c492db37 JB |
4036 | if (lr) |
4037 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); | |
806a9e39 | 4038 | |
0ef9ccdd | 4039 | if (!request_wiphy || request_wiphy != wiphy) |
38fd2143 | 4040 | return; |
0ef9ccdd | 4041 | |
c492db37 JB |
4042 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
4043 | lr->country_ie_env = ENVIRON_ANY; | |
3f2355cb LR |
4044 | } |
4045 | ||
174e0cd2 | 4046 | /* |
f89769cf AS |
4047 | * See FCC notices for UNII band definitions |
4048 | * 5GHz: https://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii | |
4049 | * 6GHz: https://www.fcc.gov/document/fcc-proposes-more-spectrum-unlicensed-use-0 | |
174e0cd2 IP |
4050 | */ |
4051 | int cfg80211_get_unii(int freq) | |
4052 | { | |
4053 | /* UNII-1 */ | |
4054 | if (freq >= 5150 && freq <= 5250) | |
4055 | return 0; | |
4056 | ||
4057 | /* UNII-2A */ | |
4058 | if (freq > 5250 && freq <= 5350) | |
4059 | return 1; | |
4060 | ||
4061 | /* UNII-2B */ | |
4062 | if (freq > 5350 && freq <= 5470) | |
4063 | return 2; | |
4064 | ||
4065 | /* UNII-2C */ | |
4066 | if (freq > 5470 && freq <= 5725) | |
4067 | return 3; | |
4068 | ||
4069 | /* UNII-3 */ | |
4070 | if (freq > 5725 && freq <= 5825) | |
4071 | return 4; | |
4072 | ||
f89769cf AS |
4073 | /* UNII-5 */ |
4074 | if (freq > 5925 && freq <= 6425) | |
4075 | return 5; | |
4076 | ||
4077 | /* UNII-6 */ | |
4078 | if (freq > 6425 && freq <= 6525) | |
4079 | return 6; | |
4080 | ||
4081 | /* UNII-7 */ | |
4082 | if (freq > 6525 && freq <= 6875) | |
4083 | return 7; | |
4084 | ||
4085 | /* UNII-8 */ | |
4086 | if (freq > 6875 && freq <= 7125) | |
4087 | return 8; | |
4088 | ||
174e0cd2 IP |
4089 | return -EINVAL; |
4090 | } | |
4091 | ||
c8866e55 IP |
4092 | bool regulatory_indoor_allowed(void) |
4093 | { | |
4094 | return reg_is_indoor; | |
4095 | } | |
4096 | ||
b35a51c7 VT |
4097 | bool regulatory_pre_cac_allowed(struct wiphy *wiphy) |
4098 | { | |
4099 | const struct ieee80211_regdomain *regd = NULL; | |
4100 | const struct ieee80211_regdomain *wiphy_regd = NULL; | |
4101 | bool pre_cac_allowed = false; | |
4102 | ||
4103 | rcu_read_lock(); | |
4104 | ||
4105 | regd = rcu_dereference(cfg80211_regdomain); | |
4106 | wiphy_regd = rcu_dereference(wiphy->regd); | |
4107 | if (!wiphy_regd) { | |
4108 | if (regd->dfs_region == NL80211_DFS_ETSI) | |
4109 | pre_cac_allowed = true; | |
4110 | ||
4111 | rcu_read_unlock(); | |
4112 | ||
4113 | return pre_cac_allowed; | |
4114 | } | |
4115 | ||
4116 | if (regd->dfs_region == wiphy_regd->dfs_region && | |
4117 | wiphy_regd->dfs_region == NL80211_DFS_ETSI) | |
4118 | pre_cac_allowed = true; | |
4119 | ||
4120 | rcu_read_unlock(); | |
4121 | ||
4122 | return pre_cac_allowed; | |
4123 | } | |
dc0c18ed | 4124 | EXPORT_SYMBOL(regulatory_pre_cac_allowed); |
b35a51c7 | 4125 | |
26ec17a1 OM |
4126 | static void cfg80211_check_and_end_cac(struct cfg80211_registered_device *rdev) |
4127 | { | |
4128 | struct wireless_dev *wdev; | |
4129 | /* If we finished CAC or received radar, we should end any | |
4130 | * CAC running on the same channels. | |
4131 | * the check !cfg80211_chandef_dfs_usable contain 2 options: | |
4132 | * either all channels are available - those the CAC_FINISHED | |
4133 | * event has effected another wdev state, or there is a channel | |
4134 | * in unavailable state in wdev chandef - those the RADAR_DETECTED | |
4135 | * event has effected another wdev state. | |
4136 | * In both cases we should end the CAC on the wdev. | |
4137 | */ | |
4138 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { | |
4139 | if (wdev->cac_started && | |
4140 | !cfg80211_chandef_dfs_usable(&rdev->wiphy, &wdev->chandef)) | |
4141 | rdev_end_cac(rdev, wdev->netdev); | |
4142 | } | |
4143 | } | |
4144 | ||
89766727 VT |
4145 | void regulatory_propagate_dfs_state(struct wiphy *wiphy, |
4146 | struct cfg80211_chan_def *chandef, | |
4147 | enum nl80211_dfs_state dfs_state, | |
4148 | enum nl80211_radar_event event) | |
4149 | { | |
4150 | struct cfg80211_registered_device *rdev; | |
4151 | ||
4152 | ASSERT_RTNL(); | |
4153 | ||
4154 | if (WARN_ON(!cfg80211_chandef_valid(chandef))) | |
4155 | return; | |
4156 | ||
89766727 VT |
4157 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
4158 | if (wiphy == &rdev->wiphy) | |
4159 | continue; | |
4160 | ||
4161 | if (!reg_dfs_domain_same(wiphy, &rdev->wiphy)) | |
4162 | continue; | |
4163 | ||
4164 | if (!ieee80211_get_channel(&rdev->wiphy, | |
4165 | chandef->chan->center_freq)) | |
4166 | continue; | |
4167 | ||
4168 | cfg80211_set_dfs_state(&rdev->wiphy, chandef, dfs_state); | |
4169 | ||
4170 | if (event == NL80211_RADAR_DETECTED || | |
26ec17a1 | 4171 | event == NL80211_RADAR_CAC_FINISHED) { |
89766727 | 4172 | cfg80211_sched_dfs_chan_update(rdev); |
26ec17a1 OM |
4173 | cfg80211_check_and_end_cac(rdev); |
4174 | } | |
89766727 VT |
4175 | |
4176 | nl80211_radar_notify(rdev, chandef, event, NULL, GFP_KERNEL); | |
4177 | } | |
4178 | } | |
4179 | ||
d7be102f | 4180 | static int __init regulatory_init_db(void) |
b2e1b302 | 4181 | { |
d7be102f | 4182 | int err; |
734366de | 4183 | |
71e5e886 JB |
4184 | /* |
4185 | * It's possible that - due to other bugs/issues - cfg80211 | |
4186 | * never called regulatory_init() below, or that it failed; | |
4187 | * in that case, don't try to do any further work here as | |
4188 | * it's doomed to lead to crashes. | |
4189 | */ | |
4190 | if (IS_ERR_OR_NULL(reg_pdev)) | |
4191 | return -EINVAL; | |
4192 | ||
90a53e44 JB |
4193 | err = load_builtin_regdb_keys(); |
4194 | if (err) | |
4195 | return err; | |
4196 | ||
ae9e4b0d | 4197 | /* We always try to get an update for the static regdomain */ |
458f4f9e | 4198 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
ba25c141 | 4199 | if (err) { |
09d11800 OO |
4200 | if (err == -ENOMEM) { |
4201 | platform_device_unregister(reg_pdev); | |
bcf4f99b | 4202 | return err; |
09d11800 | 4203 | } |
bcf4f99b LR |
4204 | /* |
4205 | * N.B. kobject_uevent_env() can fail mainly for when we're out | |
4206 | * memory which is handled and propagated appropriately above | |
4207 | * but it can also fail during a netlink_broadcast() or during | |
4208 | * early boot for call_usermodehelper(). For now treat these | |
4209 | * errors as non-fatal. | |
4210 | */ | |
e9c0268f | 4211 | pr_err("kobject_uevent_env() was unable to call CRDA during init\n"); |
bcf4f99b | 4212 | } |
734366de | 4213 | |
ae9e4b0d LR |
4214 | /* |
4215 | * Finally, if the user set the module parameter treat it | |
4216 | * as a user hint. | |
4217 | */ | |
4218 | if (!is_world_regdom(ieee80211_regdom)) | |
57b5ce07 LR |
4219 | regulatory_hint_user(ieee80211_regdom, |
4220 | NL80211_USER_REG_HINT_USER); | |
ae9e4b0d | 4221 | |
b2e1b302 LR |
4222 | return 0; |
4223 | } | |
d7be102f JB |
4224 | #ifndef MODULE |
4225 | late_initcall(regulatory_init_db); | |
4226 | #endif | |
4227 | ||
4228 | int __init regulatory_init(void) | |
4229 | { | |
4230 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); | |
4231 | if (IS_ERR(reg_pdev)) | |
4232 | return PTR_ERR(reg_pdev); | |
4233 | ||
4234 | spin_lock_init(®_requests_lock); | |
4235 | spin_lock_init(®_pending_beacons_lock); | |
4236 | spin_lock_init(®_indoor_lock); | |
4237 | ||
4238 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); | |
4239 | ||
4240 | user_alpha2[0] = '9'; | |
4241 | user_alpha2[1] = '7'; | |
4242 | ||
4243 | #ifdef MODULE | |
4244 | return regulatory_init_db(); | |
4245 | #else | |
4246 | return 0; | |
4247 | #endif | |
4248 | } | |
b2e1b302 | 4249 | |
1a919318 | 4250 | void regulatory_exit(void) |
b2e1b302 | 4251 | { |
fe33eb39 | 4252 | struct regulatory_request *reg_request, *tmp; |
e38f8a7a | 4253 | struct reg_beacon *reg_beacon, *btmp; |
fe33eb39 LR |
4254 | |
4255 | cancel_work_sync(®_work); | |
b6863036 | 4256 | cancel_crda_timeout_sync(); |
ad932f04 | 4257 | cancel_delayed_work_sync(®_check_chans); |
fe33eb39 | 4258 | |
9027b149 | 4259 | /* Lock to suppress warnings */ |
38fd2143 | 4260 | rtnl_lock(); |
379b82f4 | 4261 | reset_regdomains(true, NULL); |
38fd2143 | 4262 | rtnl_unlock(); |
734366de | 4263 | |
58ebacc6 | 4264 | dev_set_uevent_suppress(®_pdev->dev, true); |
f6037d09 | 4265 | |
b2e1b302 | 4266 | platform_device_unregister(reg_pdev); |
734366de | 4267 | |
fea9bced JB |
4268 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
4269 | list_del(®_beacon->list); | |
4270 | kfree(reg_beacon); | |
e38f8a7a | 4271 | } |
e38f8a7a | 4272 | |
fea9bced JB |
4273 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
4274 | list_del(®_beacon->list); | |
4275 | kfree(reg_beacon); | |
e38f8a7a LR |
4276 | } |
4277 | ||
fea9bced JB |
4278 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
4279 | list_del(®_request->list); | |
4280 | kfree(reg_request); | |
fe33eb39 | 4281 | } |
007f6c5e JB |
4282 | |
4283 | if (!IS_ERR_OR_NULL(regdb)) | |
4284 | kfree(regdb); | |
e646a025 JB |
4285 | if (!IS_ERR_OR_NULL(cfg80211_user_regdom)) |
4286 | kfree(cfg80211_user_regdom); | |
90a53e44 JB |
4287 | |
4288 | free_regdb_keyring(); | |
8318d78a | 4289 | } |