Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 3 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 5 | * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 6 | * |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 7 | * Permission to use, copy, modify, and/or distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 18 | */ |
| 19 | |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 20 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 21 | /** |
| 22 | * DOC: Wireless regulatory infrastructure |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 23 | * |
| 24 | * The usual implementation is for a driver to read a device EEPROM to |
| 25 | * determine which regulatory domain it should be operating under, then |
| 26 | * looking up the allowable channels in a driver-local table and finally |
| 27 | * registering those channels in the wiphy structure. |
| 28 | * |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 29 | * Another set of compliance enforcement is for drivers to use their |
| 30 | * own compliance limits which can be stored on the EEPROM. The host |
| 31 | * driver or firmware may ensure these are used. |
| 32 | * |
| 33 | * In addition to all this we provide an extra layer of regulatory |
| 34 | * conformance. For drivers which do not have any regulatory |
| 35 | * information CRDA provides the complete regulatory solution. |
| 36 | * For others it provides a community effort on further restrictions |
| 37 | * to enhance compliance. |
| 38 | * |
| 39 | * Note: When number of rules --> infinity we will not be able to |
| 40 | * index on alpha2 any more, instead we'll probably have to |
| 41 | * rely on some SHA1 checksum of the regdomain for example. |
| 42 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 43 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 44 | |
| 45 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 46 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 47 | #include <linux/kernel.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 48 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 49 | #include <linux/slab.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 50 | #include <linux/list.h> |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 51 | #include <linux/ctype.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 52 | #include <linux/nl80211.h> |
| 53 | #include <linux/platform_device.h> |
Paul Gortmaker | d9b9384 | 2011-09-18 13:21:27 -0400 | [diff] [blame] | 54 | #include <linux/moduleparam.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 55 | #include <net/cfg80211.h> |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 56 | #include "core.h" |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 57 | #include "reg.h" |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 58 | #include "regdb.h" |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 59 | #include "nl80211.h" |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 60 | |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 61 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Joe Perches | 12c5ffb | 2011-07-29 14:51:25 -0700 | [diff] [blame] | 62 | #define REG_DBG_PRINT(format, args...) \ |
| 63 | printk(KERN_DEBUG pr_fmt(format), ##args) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 64 | #else |
John W. Linville | 8271195 | 2010-01-05 17:57:20 -0500 | [diff] [blame] | 65 | #define REG_DBG_PRINT(args...) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 66 | #endif |
| 67 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 68 | enum reg_request_treatment { |
| 69 | REG_REQ_OK, |
| 70 | REG_REQ_IGNORE, |
| 71 | REG_REQ_INTERSECT, |
| 72 | REG_REQ_ALREADY_SET, |
| 73 | }; |
| 74 | |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 75 | static struct regulatory_request core_request_world = { |
| 76 | .initiator = NL80211_REGDOM_SET_BY_CORE, |
| 77 | .alpha2[0] = '0', |
| 78 | .alpha2[1] = '0', |
| 79 | .intersect = false, |
| 80 | .processed = true, |
| 81 | .country_ie_env = ENVIRON_ANY, |
| 82 | }; |
| 83 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 84 | /* |
| 85 | * Receipt of information from last regulatory request, |
| 86 | * protected by RTNL (and can be accessed with RCU protection) |
| 87 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 88 | static struct regulatory_request __rcu *last_request = |
| 89 | (void __rcu *)&core_request_world; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 90 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 91 | /* To trigger userspace events */ |
| 92 | static struct platform_device *reg_pdev; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 93 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 94 | static struct device_type reg_device_type = { |
| 95 | .uevent = reg_device_uevent, |
| 96 | }; |
| 97 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 98 | /* |
| 99 | * Central wireless core regulatory domains, we only need two, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 100 | * the current one and a world regulatory domain in case we have no |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 101 | * information to give us an alpha2. |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 102 | * (protected by RTNL, can be read under RCU) |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 103 | */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 104 | const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 105 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 106 | /* |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 107 | * Number of devices that registered to the core |
| 108 | * that support cellular base station regulatory hints |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 109 | * (protected by RTNL) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 110 | */ |
| 111 | static int reg_num_devs_support_basehint; |
| 112 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 113 | static const struct ieee80211_regdomain *get_cfg80211_regdom(void) |
| 114 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 115 | return rtnl_dereference(cfg80211_regdomain); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | static const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) |
| 119 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 120 | return rtnl_dereference(wiphy->regd); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | static void rcu_free_regdom(const struct ieee80211_regdomain *r) |
| 124 | { |
| 125 | if (!r) |
| 126 | return; |
| 127 | kfree_rcu((struct ieee80211_regdomain *)r, rcu_head); |
| 128 | } |
| 129 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 130 | static struct regulatory_request *get_last_request(void) |
| 131 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 132 | return rcu_dereference_rtnl(last_request); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 133 | } |
| 134 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 135 | /* Used to queue up regulatory hints */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 136 | static LIST_HEAD(reg_requests_list); |
| 137 | static spinlock_t reg_requests_lock; |
| 138 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 139 | /* Used to queue up beacon hints for review */ |
| 140 | static LIST_HEAD(reg_pending_beacons); |
| 141 | static spinlock_t reg_pending_beacons_lock; |
| 142 | |
| 143 | /* Used to keep track of processed beacon hints */ |
| 144 | static LIST_HEAD(reg_beacon_list); |
| 145 | |
| 146 | struct reg_beacon { |
| 147 | struct list_head list; |
| 148 | struct ieee80211_channel chan; |
| 149 | }; |
| 150 | |
Luis R. Rodriguez | f333a7a | 2010-11-17 21:46:07 -0800 | [diff] [blame] | 151 | static void reg_todo(struct work_struct *work); |
| 152 | static DECLARE_WORK(reg_work, reg_todo); |
| 153 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 154 | static void reg_timeout_work(struct work_struct *work); |
| 155 | static DECLARE_DELAYED_WORK(reg_timeout, reg_timeout_work); |
| 156 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 157 | /* We keep a static world regulatory domain in case of the absence of CRDA */ |
| 158 | static const struct ieee80211_regdomain world_regdom = { |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 159 | .n_reg_rules = 6, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 160 | .alpha2 = "00", |
| 161 | .reg_rules = { |
Luis R. Rodriguez | 68798a6 | 2009-02-21 00:20:37 -0500 | [diff] [blame] | 162 | /* IEEE 802.11b/g, channels 1..11 */ |
| 163 | REG_RULE(2412-10, 2462+10, 40, 6, 20, 0), |
Johannes Berg | 43c771a | 2012-11-12 10:51:34 +0100 | [diff] [blame] | 164 | /* IEEE 802.11b/g, channels 12..13. */ |
| 165 | REG_RULE(2467-10, 2472+10, 40, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 166 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 167 | /* IEEE 802.11 channel 14 - Only JP enables |
| 168 | * this and for 802.11b only */ |
| 169 | REG_RULE(2484-10, 2484+10, 20, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 170 | NL80211_RRF_NO_IR | |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 171 | NL80211_RRF_NO_OFDM), |
| 172 | /* IEEE 802.11a, channel 36..48 */ |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 173 | REG_RULE(5180-10, 5240+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 174 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 175 | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 176 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
| 177 | REG_RULE(5260-10, 5320+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 178 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 179 | NL80211_RRF_DFS), |
| 180 | |
| 181 | /* IEEE 802.11a, channel 100..144 - DFS required */ |
| 182 | REG_RULE(5500-10, 5720+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 183 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 184 | NL80211_RRF_DFS), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 185 | |
| 186 | /* IEEE 802.11a, channel 149..165 */ |
Johannes Berg | 8ab9d85 | 2012-12-03 22:09:22 +0100 | [diff] [blame] | 187 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 188 | NL80211_RRF_NO_IR), |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 189 | |
| 190 | /* IEEE 802.11ad (60gHz), channels 1..3 */ |
| 191 | REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0), |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 192 | } |
| 193 | }; |
| 194 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 195 | /* protected by RTNL */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 196 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
| 197 | &world_regdom; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 198 | |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 199 | static char *ieee80211_regdom = "00"; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 200 | static char user_alpha2[2]; |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 201 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 202 | module_param(ieee80211_regdom, charp, 0444); |
| 203 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); |
| 204 | |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 205 | static void reg_kfree_last_request(void) |
| 206 | { |
| 207 | struct regulatory_request *lr; |
| 208 | |
| 209 | lr = get_last_request(); |
| 210 | |
| 211 | if (lr != &core_request_world && lr) |
| 212 | kfree_rcu(lr, rcu_head); |
| 213 | } |
| 214 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 215 | static void reg_update_last_request(struct regulatory_request *request) |
| 216 | { |
| 217 | reg_kfree_last_request(); |
| 218 | rcu_assign_pointer(last_request, request); |
| 219 | } |
| 220 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 221 | static void reset_regdomains(bool full_reset, |
| 222 | const struct ieee80211_regdomain *new_regdom) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 223 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 224 | const struct ieee80211_regdomain *r; |
| 225 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 226 | ASSERT_RTNL(); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 227 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 228 | r = get_cfg80211_regdom(); |
| 229 | |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 230 | /* avoid freeing static information or freeing something twice */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 231 | if (r == cfg80211_world_regdom) |
| 232 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 233 | if (cfg80211_world_regdom == &world_regdom) |
| 234 | cfg80211_world_regdom = NULL; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 235 | if (r == &world_regdom) |
| 236 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 237 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 238 | rcu_free_regdom(r); |
| 239 | rcu_free_regdom(cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 240 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 241 | cfg80211_world_regdom = &world_regdom; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 242 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 243 | |
| 244 | if (!full_reset) |
| 245 | return; |
| 246 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 247 | reg_update_last_request(&core_request_world); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 248 | } |
| 249 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 250 | /* |
| 251 | * Dynamic world regulatory domain requested by the wireless |
| 252 | * core upon initialization |
| 253 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 254 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 255 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 256 | struct regulatory_request *lr; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 257 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 258 | lr = get_last_request(); |
| 259 | |
| 260 | WARN_ON(!lr); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 261 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 262 | reset_regdomains(false, rd); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 263 | |
| 264 | cfg80211_world_regdom = rd; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 265 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 266 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 267 | bool is_world_regdom(const char *alpha2) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 268 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 269 | if (!alpha2) |
| 270 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 271 | return alpha2[0] == '0' && alpha2[1] == '0'; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 272 | } |
| 273 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 274 | static bool is_alpha2_set(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 275 | { |
| 276 | if (!alpha2) |
| 277 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 278 | return alpha2[0] && alpha2[1]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 279 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 280 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 281 | static bool is_unknown_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 282 | { |
| 283 | if (!alpha2) |
| 284 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 285 | /* |
| 286 | * Special case where regulatory domain was built by driver |
| 287 | * but a specific alpha2 cannot be determined |
| 288 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 289 | return alpha2[0] == '9' && alpha2[1] == '9'; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 292 | static bool is_intersected_alpha2(const char *alpha2) |
| 293 | { |
| 294 | if (!alpha2) |
| 295 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 296 | /* |
| 297 | * Special case where regulatory domain is the |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 298 | * result of an intersection between two regulatory domain |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 299 | * structures |
| 300 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 301 | return alpha2[0] == '9' && alpha2[1] == '8'; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 302 | } |
| 303 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 304 | static bool is_an_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 305 | { |
| 306 | if (!alpha2) |
| 307 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 308 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 309 | } |
| 310 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 311 | static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 312 | { |
| 313 | if (!alpha2_x || !alpha2_y) |
| 314 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 315 | return alpha2_x[0] == alpha2_y[0] && alpha2_x[1] == alpha2_y[1]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 316 | } |
| 317 | |
Luis R. Rodriguez | 69b1572 | 2009-02-21 00:04:33 -0500 | [diff] [blame] | 318 | static bool regdom_changes(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 319 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 320 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 321 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 322 | if (!r) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 323 | return true; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 324 | return !alpha2_equal(r->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 325 | } |
| 326 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 327 | /* |
| 328 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets |
| 329 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER |
| 330 | * has ever been issued. |
| 331 | */ |
| 332 | static bool is_user_regdom_saved(void) |
| 333 | { |
| 334 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') |
| 335 | return false; |
| 336 | |
| 337 | /* This would indicate a mistake on the design */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 338 | if (WARN(!is_world_regdom(user_alpha2) && !is_an_alpha2(user_alpha2), |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 339 | "Unexpected user alpha2: %c%c\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 340 | user_alpha2[0], user_alpha2[1])) |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 341 | return false; |
| 342 | |
| 343 | return true; |
| 344 | } |
| 345 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 346 | static const struct ieee80211_regdomain * |
| 347 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 348 | { |
| 349 | struct ieee80211_regdomain *regd; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 350 | int size_of_regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 351 | unsigned int i; |
| 352 | |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 353 | size_of_regd = |
| 354 | sizeof(struct ieee80211_regdomain) + |
| 355 | src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 356 | |
| 357 | regd = kzalloc(size_of_regd, GFP_KERNEL); |
| 358 | if (!regd) |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 359 | return ERR_PTR(-ENOMEM); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 360 | |
| 361 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); |
| 362 | |
| 363 | for (i = 0; i < src_regd->n_reg_rules; i++) |
| 364 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 365 | sizeof(struct ieee80211_reg_rule)); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 366 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 367 | return regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | #ifdef CONFIG_CFG80211_INTERNAL_REGDB |
| 371 | struct reg_regdb_search_request { |
| 372 | char alpha2[2]; |
| 373 | struct list_head list; |
| 374 | }; |
| 375 | |
| 376 | static LIST_HEAD(reg_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 377 | static DEFINE_MUTEX(reg_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 378 | |
| 379 | static void reg_regdb_search(struct work_struct *work) |
| 380 | { |
| 381 | struct reg_regdb_search_request *request; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 382 | const struct ieee80211_regdomain *curdom, *regdom = NULL; |
| 383 | int i; |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 384 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 385 | rtnl_lock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 386 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 387 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 388 | while (!list_empty(®_regdb_search_list)) { |
| 389 | request = list_first_entry(®_regdb_search_list, |
| 390 | struct reg_regdb_search_request, |
| 391 | list); |
| 392 | list_del(&request->list); |
| 393 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 394 | for (i = 0; i < reg_regdb_size; i++) { |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 395 | curdom = reg_regdb[i]; |
| 396 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 397 | if (alpha2_equal(request->alpha2, curdom->alpha2)) { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 398 | regdom = reg_copy_regd(curdom); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 399 | break; |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | kfree(request); |
| 404 | } |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 405 | mutex_unlock(®_regdb_search_mutex); |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 406 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 407 | if (!IS_ERR_OR_NULL(regdom)) |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 408 | set_regdom(regdom); |
| 409 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 410 | rtnl_unlock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 411 | } |
| 412 | |
| 413 | static DECLARE_WORK(reg_regdb_work, reg_regdb_search); |
| 414 | |
| 415 | static void reg_regdb_query(const char *alpha2) |
| 416 | { |
| 417 | struct reg_regdb_search_request *request; |
| 418 | |
| 419 | if (!alpha2) |
| 420 | return; |
| 421 | |
| 422 | request = kzalloc(sizeof(struct reg_regdb_search_request), GFP_KERNEL); |
| 423 | if (!request) |
| 424 | return; |
| 425 | |
| 426 | memcpy(request->alpha2, alpha2, 2); |
| 427 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 428 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 429 | list_add_tail(&request->list, ®_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 430 | mutex_unlock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 431 | |
| 432 | schedule_work(®_regdb_work); |
| 433 | } |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 434 | |
| 435 | /* Feel free to add any other sanity checks here */ |
| 436 | static void reg_regdb_size_check(void) |
| 437 | { |
| 438 | /* We should ideally BUILD_BUG_ON() but then random builds would fail */ |
| 439 | WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it..."); |
| 440 | } |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 441 | #else |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 442 | static inline void reg_regdb_size_check(void) {} |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 443 | static inline void reg_regdb_query(const char *alpha2) {} |
| 444 | #endif /* CONFIG_CFG80211_INTERNAL_REGDB */ |
| 445 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 446 | /* |
| 447 | * This lets us keep regulatory code which is updated on a regulatory |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 448 | * basis in userspace. Country information is filled in by |
| 449 | * reg_device_uevent |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 450 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 451 | static int call_crda(const char *alpha2) |
| 452 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 453 | if (!is_world_regdom((char *) alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 454 | pr_info("Calling CRDA for country: %c%c\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 455 | alpha2[0], alpha2[1]); |
| 456 | else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 457 | pr_info("Calling CRDA to update world regulatory domain\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 458 | |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 459 | /* query internal regulatory database (if it exists) */ |
| 460 | reg_regdb_query(alpha2); |
| 461 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 462 | return kobject_uevent(®_pdev->dev.kobj, KOBJ_CHANGE); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 463 | } |
| 464 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 465 | static enum reg_request_treatment |
| 466 | reg_call_crda(struct regulatory_request *request) |
| 467 | { |
| 468 | if (call_crda(request->alpha2)) |
| 469 | return REG_REQ_IGNORE; |
| 470 | return REG_REQ_OK; |
| 471 | } |
| 472 | |
Luis R. Rodriguez | e438768 | 2013-11-05 09:18:01 -0800 | [diff] [blame] | 473 | bool reg_is_valid_request(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 474 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 475 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 61405e9 | 2009-05-13 17:04:41 -0400 | [diff] [blame] | 476 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 477 | if (!lr || lr->processed) |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 478 | return false; |
| 479 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 480 | return alpha2_equal(lr->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | /* Sanity check on a regulatory rule */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 484 | static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 485 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 486 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 487 | u32 freq_diff; |
| 488 | |
Luis R. Rodriguez | 91e9900 | 2008-11-12 14:21:55 -0800 | [diff] [blame] | 489 | if (freq_range->start_freq_khz <= 0 || freq_range->end_freq_khz <= 0) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 490 | return false; |
| 491 | |
| 492 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) |
| 493 | return false; |
| 494 | |
| 495 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 496 | |
Roel Kluin | bd05f28 | 2009-03-03 22:55:21 +0100 | [diff] [blame] | 497 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 498 | freq_range->max_bandwidth_khz > freq_diff) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 499 | return false; |
| 500 | |
| 501 | return true; |
| 502 | } |
| 503 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 504 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 505 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 506 | const struct ieee80211_reg_rule *reg_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 507 | unsigned int i; |
| 508 | |
| 509 | if (!rd->n_reg_rules) |
| 510 | return false; |
| 511 | |
Luis R. Rodriguez | 88dc1c3 | 2008-11-12 14:22:01 -0800 | [diff] [blame] | 512 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
| 513 | return false; |
| 514 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 515 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 516 | reg_rule = &rd->reg_rules[i]; |
| 517 | if (!is_valid_reg_rule(reg_rule)) |
| 518 | return false; |
| 519 | } |
| 520 | |
| 521 | return true; |
| 522 | } |
| 523 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 524 | static bool reg_does_bw_fit(const struct ieee80211_freq_range *freq_range, |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 525 | u32 center_freq_khz, u32 bw_khz) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 526 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 527 | u32 start_freq_khz, end_freq_khz; |
| 528 | |
| 529 | start_freq_khz = center_freq_khz - (bw_khz/2); |
| 530 | end_freq_khz = center_freq_khz + (bw_khz/2); |
| 531 | |
| 532 | if (start_freq_khz >= freq_range->start_freq_khz && |
| 533 | end_freq_khz <= freq_range->end_freq_khz) |
| 534 | return true; |
| 535 | |
| 536 | return false; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 537 | } |
| 538 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 539 | /** |
| 540 | * freq_in_rule_band - tells us if a frequency is in a frequency band |
| 541 | * @freq_range: frequency rule we want to query |
| 542 | * @freq_khz: frequency we are inquiring about |
| 543 | * |
| 544 | * This lets us know if a specific frequency rule is or is not relevant to |
| 545 | * a specific frequency's band. Bands are device specific and artificial |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 546 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
| 547 | * however it is safe for now to assume that a frequency rule should not be |
| 548 | * part of a frequency's band if the start freq or end freq are off by more |
| 549 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the |
| 550 | * 60 GHz band. |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 551 | * This resolution can be lowered and should be considered as we add |
| 552 | * regulatory rule support for other "bands". |
| 553 | **/ |
| 554 | static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 555 | u32 freq_khz) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 556 | { |
| 557 | #define ONE_GHZ_IN_KHZ 1000000 |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 558 | /* |
| 559 | * From 802.11ad: directional multi-gigabit (DMG): |
| 560 | * Pertaining to operation in a frequency band containing a channel |
| 561 | * with the Channel starting frequency above 45 GHz. |
| 562 | */ |
| 563 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? |
| 564 | 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; |
| 565 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 566 | return true; |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 567 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 568 | return true; |
| 569 | return false; |
| 570 | #undef ONE_GHZ_IN_KHZ |
| 571 | } |
| 572 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 573 | /* |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 574 | * Helper for regdom_intersect(), this does the real |
| 575 | * mathematical intersection fun |
| 576 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 577 | static int reg_rules_intersect(const struct ieee80211_reg_rule *rule1, |
| 578 | const struct ieee80211_reg_rule *rule2, |
| 579 | struct ieee80211_reg_rule *intersected_rule) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 580 | { |
| 581 | const struct ieee80211_freq_range *freq_range1, *freq_range2; |
| 582 | struct ieee80211_freq_range *freq_range; |
| 583 | const struct ieee80211_power_rule *power_rule1, *power_rule2; |
| 584 | struct ieee80211_power_rule *power_rule; |
| 585 | u32 freq_diff; |
| 586 | |
| 587 | freq_range1 = &rule1->freq_range; |
| 588 | freq_range2 = &rule2->freq_range; |
| 589 | freq_range = &intersected_rule->freq_range; |
| 590 | |
| 591 | power_rule1 = &rule1->power_rule; |
| 592 | power_rule2 = &rule2->power_rule; |
| 593 | power_rule = &intersected_rule->power_rule; |
| 594 | |
| 595 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 596 | freq_range2->start_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 597 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 598 | freq_range2->end_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 599 | freq_range->max_bandwidth_khz = min(freq_range1->max_bandwidth_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 600 | freq_range2->max_bandwidth_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 601 | |
| 602 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 603 | if (freq_range->max_bandwidth_khz > freq_diff) |
| 604 | freq_range->max_bandwidth_khz = freq_diff; |
| 605 | |
| 606 | power_rule->max_eirp = min(power_rule1->max_eirp, |
| 607 | power_rule2->max_eirp); |
| 608 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, |
| 609 | power_rule2->max_antenna_gain); |
| 610 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 611 | intersected_rule->flags = rule1->flags | rule2->flags; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 612 | |
| 613 | if (!is_valid_reg_rule(intersected_rule)) |
| 614 | return -EINVAL; |
| 615 | |
| 616 | return 0; |
| 617 | } |
| 618 | |
| 619 | /** |
| 620 | * regdom_intersect - do the intersection between two regulatory domains |
| 621 | * @rd1: first regulatory domain |
| 622 | * @rd2: second regulatory domain |
| 623 | * |
| 624 | * Use this function to get the intersection between two regulatory domains. |
| 625 | * Once completed we will mark the alpha2 for the rd as intersected, "98", |
| 626 | * as no one single alpha2 can represent this regulatory domain. |
| 627 | * |
| 628 | * Returns a pointer to the regulatory domain structure which will hold the |
| 629 | * resulting intersection of rules between rd1 and rd2. We will |
| 630 | * kzalloc() this structure for you. |
| 631 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 632 | static struct ieee80211_regdomain * |
| 633 | regdom_intersect(const struct ieee80211_regdomain *rd1, |
| 634 | const struct ieee80211_regdomain *rd2) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 635 | { |
| 636 | int r, size_of_regd; |
| 637 | unsigned int x, y; |
| 638 | unsigned int num_rules = 0, rule_idx = 0; |
| 639 | const struct ieee80211_reg_rule *rule1, *rule2; |
| 640 | struct ieee80211_reg_rule *intersected_rule; |
| 641 | struct ieee80211_regdomain *rd; |
| 642 | /* This is just a dummy holder to help us count */ |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 643 | struct ieee80211_reg_rule dummy_rule; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 644 | |
| 645 | if (!rd1 || !rd2) |
| 646 | return NULL; |
| 647 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 648 | /* |
| 649 | * First we get a count of the rules we'll need, then we actually |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 650 | * build them. This is to so we can malloc() and free() a |
| 651 | * regdomain once. The reason we use reg_rules_intersect() here |
| 652 | * is it will return -EINVAL if the rule computed makes no sense. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 653 | * All rules that do check out OK are valid. |
| 654 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 655 | |
| 656 | for (x = 0; x < rd1->n_reg_rules; x++) { |
| 657 | rule1 = &rd1->reg_rules[x]; |
| 658 | for (y = 0; y < rd2->n_reg_rules; y++) { |
| 659 | rule2 = &rd2->reg_rules[y]; |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 660 | if (!reg_rules_intersect(rule1, rule2, &dummy_rule)) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 661 | num_rules++; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 662 | } |
| 663 | } |
| 664 | |
| 665 | if (!num_rules) |
| 666 | return NULL; |
| 667 | |
| 668 | size_of_regd = sizeof(struct ieee80211_regdomain) + |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 669 | num_rules * sizeof(struct ieee80211_reg_rule); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 670 | |
| 671 | rd = kzalloc(size_of_regd, GFP_KERNEL); |
| 672 | if (!rd) |
| 673 | return NULL; |
| 674 | |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 675 | for (x = 0; x < rd1->n_reg_rules && rule_idx < num_rules; x++) { |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 676 | rule1 = &rd1->reg_rules[x]; |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 677 | for (y = 0; y < rd2->n_reg_rules && rule_idx < num_rules; y++) { |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 678 | rule2 = &rd2->reg_rules[y]; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 679 | /* |
| 680 | * This time around instead of using the stack lets |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 681 | * write to the target rule directly saving ourselves |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 682 | * a memcpy() |
| 683 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 684 | intersected_rule = &rd->reg_rules[rule_idx]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 685 | r = reg_rules_intersect(rule1, rule2, intersected_rule); |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 686 | /* |
| 687 | * No need to memset here the intersected rule here as |
| 688 | * we're not using the stack anymore |
| 689 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 690 | if (r) |
| 691 | continue; |
| 692 | rule_idx++; |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | if (rule_idx != num_rules) { |
| 697 | kfree(rd); |
| 698 | return NULL; |
| 699 | } |
| 700 | |
| 701 | rd->n_reg_rules = num_rules; |
| 702 | rd->alpha2[0] = '9'; |
| 703 | rd->alpha2[1] = '8'; |
| 704 | |
| 705 | return rd; |
| 706 | } |
| 707 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 708 | /* |
| 709 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may |
| 710 | * want to just have the channel structure use these |
| 711 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 712 | static u32 map_regdom_flags(u32 rd_flags) |
| 713 | { |
| 714 | u32 channel_flags = 0; |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 715 | if (rd_flags & NL80211_RRF_NO_IR_ALL) |
| 716 | channel_flags |= IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 717 | if (rd_flags & NL80211_RRF_DFS) |
| 718 | channel_flags |= IEEE80211_CHAN_RADAR; |
Seth Forshee | 03f6b08 | 2012-08-01 15:58:42 -0500 | [diff] [blame] | 719 | if (rd_flags & NL80211_RRF_NO_OFDM) |
| 720 | channel_flags |= IEEE80211_CHAN_NO_OFDM; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 721 | return channel_flags; |
| 722 | } |
| 723 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 724 | static const struct ieee80211_reg_rule * |
| 725 | freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, |
| 726 | const struct ieee80211_regdomain *regd) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 727 | { |
| 728 | int i; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 729 | bool band_rule_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 730 | bool bw_fits = false; |
| 731 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 732 | if (!regd) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 733 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 734 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 735 | for (i = 0; i < regd->n_reg_rules; i++) { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 736 | const struct ieee80211_reg_rule *rr; |
| 737 | const struct ieee80211_freq_range *fr = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 738 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 739 | rr = ®d->reg_rules[i]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 740 | fr = &rr->freq_range; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 741 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 742 | /* |
| 743 | * We only need to know if one frequency rule was |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 744 | * was in center_freq's band, that's enough, so lets |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 745 | * not overwrite it once found |
| 746 | */ |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 747 | if (!band_rule_found) |
| 748 | band_rule_found = freq_in_rule_band(fr, center_freq); |
| 749 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 750 | bw_fits = reg_does_bw_fit(fr, center_freq, MHZ_TO_KHZ(20)); |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 751 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 752 | if (band_rule_found && bw_fits) |
| 753 | return rr; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 754 | } |
| 755 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 756 | if (!band_rule_found) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 757 | return ERR_PTR(-ERANGE); |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 758 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 759 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 760 | } |
| 761 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 762 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, |
| 763 | u32 center_freq) |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 764 | { |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 765 | const struct ieee80211_regdomain *regd; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 766 | struct regulatory_request *lr = get_last_request(); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 767 | |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 768 | /* |
| 769 | * Follow the driver's regulatory domain, if present, unless a country |
| 770 | * IE has been processed or a user wants to help complaince further |
| 771 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 772 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 773 | lr->initiator != NL80211_REGDOM_SET_BY_USER && |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 774 | wiphy->regd) |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 775 | regd = get_wiphy_regdom(wiphy); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 776 | else |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 777 | regd = get_cfg80211_regdom(); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 778 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 779 | return freq_reg_info_regd(wiphy, center_freq, regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 780 | } |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 781 | EXPORT_SYMBOL(freq_reg_info); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 782 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 783 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 784 | { |
| 785 | switch (initiator) { |
| 786 | case NL80211_REGDOM_SET_BY_CORE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 787 | return "core"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 788 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 789 | return "user"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 790 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 791 | return "driver"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 792 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 793 | return "country IE"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 794 | default: |
| 795 | WARN_ON(1); |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 796 | return "bug"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 797 | } |
| 798 | } |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 799 | EXPORT_SYMBOL(reg_initiator_name); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 800 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 801 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 802 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 803 | const struct ieee80211_reg_rule *reg_rule) |
| 804 | { |
| 805 | const struct ieee80211_power_rule *power_rule; |
| 806 | const struct ieee80211_freq_range *freq_range; |
| 807 | char max_antenna_gain[32]; |
| 808 | |
| 809 | power_rule = ®_rule->power_rule; |
| 810 | freq_range = ®_rule->freq_range; |
| 811 | |
| 812 | if (!power_rule->max_antenna_gain) |
| 813 | snprintf(max_antenna_gain, 32, "N/A"); |
| 814 | else |
| 815 | snprintf(max_antenna_gain, 32, "%d", power_rule->max_antenna_gain); |
| 816 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 817 | REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n", |
| 818 | chan->center_freq); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 819 | |
Pavel Roskin | 56e6786 | 2011-09-01 11:54:12 -0400 | [diff] [blame] | 820 | REG_DBG_PRINT("%d KHz - %d KHz @ %d KHz), (%s mBi, %d mBm)\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 821 | freq_range->start_freq_khz, freq_range->end_freq_khz, |
| 822 | freq_range->max_bandwidth_khz, max_antenna_gain, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 823 | power_rule->max_eirp); |
| 824 | } |
| 825 | #else |
| 826 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 827 | const struct ieee80211_reg_rule *reg_rule) |
| 828 | { |
| 829 | return; |
| 830 | } |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 831 | #endif |
| 832 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 833 | /* |
| 834 | * Note that right now we assume the desired channel bandwidth |
| 835 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 836 | * per channel, the primary and the extension channel). |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 837 | */ |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 838 | static void handle_channel(struct wiphy *wiphy, |
| 839 | enum nl80211_reg_initiator initiator, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 840 | struct ieee80211_channel *chan) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 841 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 842 | u32 flags, bw_flags = 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 843 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 844 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 845 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 846 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 847 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 848 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 849 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 850 | |
| 851 | flags = chan->orig_flags; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 852 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 853 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); |
| 854 | if (IS_ERR(reg_rule)) { |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 855 | /* |
| 856 | * We will disable all channels that do not match our |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 857 | * received regulatory rule unless the hint is coming |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 858 | * from a Country IE and the Country IE had no information |
| 859 | * about a band. The IEEE 802.11 spec allows for an AP |
| 860 | * to send only a subset of the regulatory rules allowed, |
| 861 | * so an AP in the US that only supports 2.4 GHz may only send |
| 862 | * a country IE with information for the 2.4 GHz band |
| 863 | * while 5 GHz is still supported. |
| 864 | */ |
| 865 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 866 | PTR_ERR(reg_rule) == -ERANGE) |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 867 | return; |
| 868 | |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 869 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 870 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 871 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 872 | REG_DBG_PRINT("Disabling freq %d MHz for good\n", |
| 873 | chan->center_freq); |
| 874 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 875 | chan->flags = chan->orig_flags; |
| 876 | } else { |
| 877 | REG_DBG_PRINT("Disabling freq %d MHz\n", |
| 878 | chan->center_freq); |
| 879 | chan->flags |= IEEE80211_CHAN_DISABLED; |
| 880 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 881 | return; |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 882 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 883 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 884 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 885 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 886 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 887 | freq_range = ®_rule->freq_range; |
| 888 | |
| 889 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 890 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 891 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 892 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 893 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 894 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 895 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 896 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 897 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 898 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 899 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 900 | * This guarantees the driver's requested regulatory domain |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 901 | * will always be used as a base for further regulatory |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 902 | * settings |
| 903 | */ |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 904 | chan->flags = chan->orig_flags = |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 905 | map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 906 | chan->max_antenna_gain = chan->orig_mag = |
| 907 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
Felix Fietkau | 279f0f5 | 2012-10-17 13:56:20 +0200 | [diff] [blame] | 908 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 909 | (int) MBM_TO_DBM(power_rule->max_eirp); |
| 910 | return; |
| 911 | } |
| 912 | |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 913 | chan->dfs_state = NL80211_DFS_USABLE; |
| 914 | chan->dfs_state_entered = jiffies; |
| 915 | |
Rajkumar Manoharan | aa3d7ee | 2011-09-14 14:28:17 +0530 | [diff] [blame] | 916 | chan->beacon_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 917 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 918 | chan->max_antenna_gain = |
| 919 | min_t(int, chan->orig_mag, |
| 920 | MBI_TO_DBI(power_rule->max_antenna_gain)); |
Hong Wu | eccc068 | 2012-01-11 20:33:39 +0200 | [diff] [blame] | 921 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 922 | if (chan->orig_mpwr) { |
| 923 | /* |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame^] | 924 | * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER |
| 925 | * will always follow the passed country IE power settings. |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 926 | */ |
| 927 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame^] | 928 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 929 | chan->max_power = chan->max_reg_power; |
| 930 | else |
| 931 | chan->max_power = min(chan->orig_mpwr, |
| 932 | chan->max_reg_power); |
| 933 | } else |
| 934 | chan->max_power = chan->max_reg_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 935 | } |
| 936 | |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 937 | static void handle_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 938 | enum nl80211_reg_initiator initiator, |
| 939 | struct ieee80211_supported_band *sband) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 940 | { |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 941 | unsigned int i; |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 942 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 943 | if (!sband) |
| 944 | return; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 945 | |
| 946 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 947 | handle_channel(wiphy, initiator, &sband->channels[i]); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 948 | } |
| 949 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 950 | static bool reg_request_cell_base(struct regulatory_request *request) |
| 951 | { |
| 952 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 953 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 954 | return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 955 | } |
| 956 | |
| 957 | bool reg_last_request_cell_base(void) |
| 958 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 959 | return reg_request_cell_base(get_last_request()); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | #ifdef CONFIG_CFG80211_CERTIFICATION_ONUS |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 963 | /* Core specific check */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 964 | static enum reg_request_treatment |
| 965 | reg_ignore_cell_hint(struct regulatory_request *pending_request) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 966 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 967 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 968 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 969 | if (!reg_num_devs_support_basehint) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 970 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 971 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 972 | if (reg_request_cell_base(lr) && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 973 | !regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 974 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 975 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 976 | return REG_REQ_OK; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | /* Device specific check */ |
| 980 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
| 981 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 982 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 983 | } |
| 984 | #else |
| 985 | static int reg_ignore_cell_hint(struct regulatory_request *pending_request) |
| 986 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 987 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 988 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 989 | |
| 990 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 991 | { |
| 992 | return true; |
| 993 | } |
| 994 | #endif |
| 995 | |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 996 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
| 997 | { |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 998 | if (wiphy->regulatory_flags & REGULATORY_STRICT_REG && |
| 999 | !(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)) |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1000 | return true; |
| 1001 | return false; |
| 1002 | } |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1003 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1004 | static bool ignore_reg_update(struct wiphy *wiphy, |
| 1005 | enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1006 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1007 | struct regulatory_request *lr = get_last_request(); |
| 1008 | |
| 1009 | if (!lr) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1010 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1011 | "since last_request is not set\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1012 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1013 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1014 | } |
| 1015 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1016 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1017 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1018 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1019 | "since the driver uses its own custom " |
| 1020 | "regulatory domain\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1021 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1022 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1023 | } |
| 1024 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1025 | /* |
| 1026 | * wiphy->regd will be set once the device has its own |
| 1027 | * desired regulatory domain set |
| 1028 | */ |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1029 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
Luis R. Rodriguez | 749b527 | 2010-10-20 10:18:54 -0700 | [diff] [blame] | 1030 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1031 | !is_world_regdom(lr->alpha2)) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1032 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1033 | "since the driver requires its own regulatory " |
| 1034 | "domain to be set first\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1035 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1036 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1037 | } |
| 1038 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1039 | if (reg_request_cell_base(lr)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1040 | return reg_dev_ignore_cell_hint(wiphy); |
| 1041 | |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1042 | return false; |
| 1043 | } |
| 1044 | |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1045 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
| 1046 | { |
| 1047 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); |
| 1048 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); |
| 1049 | struct regulatory_request *lr = get_last_request(); |
| 1050 | |
| 1051 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) |
| 1052 | return true; |
| 1053 | |
| 1054 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1055 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1056 | return true; |
| 1057 | |
| 1058 | return false; |
| 1059 | } |
| 1060 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1061 | static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx, |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1062 | struct reg_beacon *reg_beacon) |
| 1063 | { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1064 | struct ieee80211_supported_band *sband; |
| 1065 | struct ieee80211_channel *chan; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1066 | bool channel_changed = false; |
| 1067 | struct ieee80211_channel chan_before; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1068 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1069 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1070 | chan = &sband->channels[chan_idx]; |
| 1071 | |
| 1072 | if (likely(chan->center_freq != reg_beacon->chan.center_freq)) |
| 1073 | return; |
| 1074 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1075 | if (chan->beacon_found) |
| 1076 | return; |
| 1077 | |
| 1078 | chan->beacon_found = true; |
| 1079 | |
Luis R. Rodriguez | 0f500a5 | 2012-12-19 10:53:04 -0800 | [diff] [blame] | 1080 | if (!reg_is_world_roaming(wiphy)) |
| 1081 | return; |
| 1082 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1083 | if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS) |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1084 | return; |
| 1085 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1086 | chan_before.center_freq = chan->center_freq; |
| 1087 | chan_before.flags = chan->flags; |
| 1088 | |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 1089 | if (chan->flags & IEEE80211_CHAN_NO_IR) { |
| 1090 | chan->flags &= ~IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1091 | channel_changed = true; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1092 | } |
| 1093 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1094 | if (channel_changed) |
| 1095 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1096 | } |
| 1097 | |
| 1098 | /* |
| 1099 | * Called when a scan on a wiphy finds a beacon on |
| 1100 | * new channel |
| 1101 | */ |
| 1102 | static void wiphy_update_new_beacon(struct wiphy *wiphy, |
| 1103 | struct reg_beacon *reg_beacon) |
| 1104 | { |
| 1105 | unsigned int i; |
| 1106 | struct ieee80211_supported_band *sband; |
| 1107 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1108 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1109 | return; |
| 1110 | |
| 1111 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1112 | |
| 1113 | for (i = 0; i < sband->n_channels; i++) |
| 1114 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1115 | } |
| 1116 | |
| 1117 | /* |
| 1118 | * Called upon reg changes or a new wiphy is added |
| 1119 | */ |
| 1120 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) |
| 1121 | { |
| 1122 | unsigned int i; |
| 1123 | struct ieee80211_supported_band *sband; |
| 1124 | struct reg_beacon *reg_beacon; |
| 1125 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1126 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
| 1127 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1128 | continue; |
| 1129 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1130 | for (i = 0; i < sband->n_channels; i++) |
| 1131 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1132 | } |
| 1133 | } |
| 1134 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1135 | /* Reap the advantages of previously found beacons */ |
| 1136 | static void reg_process_beacons(struct wiphy *wiphy) |
| 1137 | { |
Luis R. Rodriguez | b1ed8dd | 2009-05-02 00:34:15 -0400 | [diff] [blame] | 1138 | /* |
| 1139 | * Means we are just firing up cfg80211, so no beacons would |
| 1140 | * have been processed yet. |
| 1141 | */ |
| 1142 | if (!last_request) |
| 1143 | return; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1144 | wiphy_update_beacon_reg(wiphy); |
| 1145 | } |
| 1146 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1147 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1148 | { |
| 1149 | if (!chan) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1150 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1151 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1152 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1153 | /* This would happen when regulatory rules disallow HT40 completely */ |
Felix Fietkau | 55b183a | 2013-01-11 14:22:58 +0100 | [diff] [blame] | 1154 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
| 1155 | return false; |
| 1156 | return true; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1160 | struct ieee80211_channel *channel) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1161 | { |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1162 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1163 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
| 1164 | unsigned int i; |
| 1165 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1166 | if (!is_ht40_allowed(channel)) { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1167 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
| 1168 | return; |
| 1169 | } |
| 1170 | |
| 1171 | /* |
| 1172 | * We need to ensure the extension channels exist to |
| 1173 | * be able to use HT40- or HT40+, this finds them (or not) |
| 1174 | */ |
| 1175 | for (i = 0; i < sband->n_channels; i++) { |
| 1176 | struct ieee80211_channel *c = &sband->channels[i]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1177 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1178 | if (c->center_freq == (channel->center_freq - 20)) |
| 1179 | channel_before = c; |
| 1180 | if (c->center_freq == (channel->center_freq + 20)) |
| 1181 | channel_after = c; |
| 1182 | } |
| 1183 | |
| 1184 | /* |
| 1185 | * Please note that this assumes target bandwidth is 20 MHz, |
| 1186 | * if that ever changes we also need to change the below logic |
| 1187 | * to include that as well. |
| 1188 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1189 | if (!is_ht40_allowed(channel_before)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1190 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1191 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1192 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1193 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1194 | if (!is_ht40_allowed(channel_after)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1195 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1196 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1197 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1198 | } |
| 1199 | |
| 1200 | static void reg_process_ht_flags_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1201 | struct ieee80211_supported_band *sband) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1202 | { |
| 1203 | unsigned int i; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1204 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1205 | if (!sband) |
| 1206 | return; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1207 | |
| 1208 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1209 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | static void reg_process_ht_flags(struct wiphy *wiphy) |
| 1213 | { |
| 1214 | enum ieee80211_band band; |
| 1215 | |
| 1216 | if (!wiphy) |
| 1217 | return; |
| 1218 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1219 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1220 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1221 | } |
| 1222 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1223 | static void reg_call_notifier(struct wiphy *wiphy, |
| 1224 | struct regulatory_request *request) |
| 1225 | { |
| 1226 | if (wiphy->reg_notifier) |
| 1227 | wiphy->reg_notifier(wiphy, request); |
| 1228 | } |
| 1229 | |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1230 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
| 1231 | enum nl80211_reg_initiator initiator) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1232 | { |
| 1233 | enum ieee80211_band band; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1234 | struct regulatory_request *lr = get_last_request(); |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1235 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1236 | if (ignore_reg_update(wiphy, initiator)) { |
| 1237 | /* |
| 1238 | * Regulatory updates set by CORE are ignored for custom |
| 1239 | * regulatory cards. Let us notify the changes to the driver, |
| 1240 | * as some drivers used this to restore its orig_* reg domain. |
| 1241 | */ |
| 1242 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1243 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1244 | reg_call_notifier(wiphy, lr); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1245 | return; |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1246 | } |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1247 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1248 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
Luis R. Rodriguez | b68e6b3 | 2011-10-11 10:59:03 -0700 | [diff] [blame] | 1249 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1250 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1251 | handle_band(wiphy, initiator, wiphy->bands[band]); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1252 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1253 | reg_process_beacons(wiphy); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1254 | reg_process_ht_flags(wiphy); |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1255 | reg_call_notifier(wiphy, lr); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1256 | } |
| 1257 | |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1258 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
| 1259 | { |
| 1260 | struct cfg80211_registered_device *rdev; |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1261 | struct wiphy *wiphy; |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1262 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1263 | ASSERT_RTNL(); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1264 | |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1265 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1266 | wiphy = &rdev->wiphy; |
| 1267 | wiphy_update_regulatory(wiphy, initiator); |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1268 | } |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1269 | } |
| 1270 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1271 | static void handle_channel_custom(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1272 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1273 | const struct ieee80211_regdomain *regd) |
| 1274 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1275 | u32 bw_flags = 0; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1276 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1277 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1278 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1279 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1280 | reg_rule = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq), |
| 1281 | regd); |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1282 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1283 | if (IS_ERR(reg_rule)) { |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1284 | REG_DBG_PRINT("Disabling freq %d MHz as custom regd has no rule that fits it\n", |
| 1285 | chan->center_freq); |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 1286 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 1287 | chan->flags = chan->orig_flags; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1288 | return; |
| 1289 | } |
| 1290 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1291 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1292 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1293 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1294 | freq_range = ®_rule->freq_range; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1295 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1296 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 1297 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1298 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 1299 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 1300 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 1301 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1302 | |
| 1303 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1304 | chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
Felix Fietkau | 279f0f5 | 2012-10-17 13:56:20 +0200 | [diff] [blame] | 1305 | chan->max_reg_power = chan->max_power = |
| 1306 | (int) MBM_TO_DBM(power_rule->max_eirp); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1307 | } |
| 1308 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1309 | static void handle_band_custom(struct wiphy *wiphy, |
| 1310 | struct ieee80211_supported_band *sband, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1311 | const struct ieee80211_regdomain *regd) |
| 1312 | { |
| 1313 | unsigned int i; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1314 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1315 | if (!sband) |
| 1316 | return; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1317 | |
| 1318 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1319 | handle_channel_custom(wiphy, &sband->channels[i], regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1320 | } |
| 1321 | |
| 1322 | /* Used by drivers prior to wiphy registration */ |
| 1323 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, |
| 1324 | const struct ieee80211_regdomain *regd) |
| 1325 | { |
| 1326 | enum ieee80211_band band; |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1327 | unsigned int bands_set = 0; |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1328 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1329 | WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG), |
| 1330 | "wiphy should have REGULATORY_CUSTOM_REG\n"); |
| 1331 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; |
Luis R. Rodriguez | 222ea58 | 2013-11-05 09:18:00 -0800 | [diff] [blame] | 1332 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1333 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1334 | if (!wiphy->bands[band]) |
| 1335 | continue; |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1336 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1337 | bands_set++; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1338 | } |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1339 | |
| 1340 | /* |
| 1341 | * no point in calling this if it won't have any effect |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1342 | * on your device's supported bands. |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1343 | */ |
| 1344 | WARN_ON(!bands_set); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1345 | } |
| 1346 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
| 1347 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1348 | static void reg_set_request_processed(void) |
| 1349 | { |
| 1350 | bool need_more_processing = false; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1351 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1352 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1353 | lr->processed = true; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1354 | |
| 1355 | spin_lock(®_requests_lock); |
| 1356 | if (!list_empty(®_requests_list)) |
| 1357 | need_more_processing = true; |
| 1358 | spin_unlock(®_requests_lock); |
| 1359 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1360 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER) |
Eliad Peller | fe20b39 | 2012-06-12 12:53:13 +0300 | [diff] [blame] | 1361 | cancel_delayed_work(®_timeout); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 1362 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1363 | if (need_more_processing) |
| 1364 | schedule_work(®_work); |
| 1365 | } |
| 1366 | |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1367 | /** |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1368 | * reg_process_hint_core - process core regulatory requests |
| 1369 | * @pending_request: a pending core regulatory request |
| 1370 | * |
| 1371 | * The wireless subsystem can use this function to process |
| 1372 | * a regulatory request issued by the regulatory core. |
| 1373 | * |
| 1374 | * Returns one of the different reg request treatment values. |
| 1375 | */ |
| 1376 | static enum reg_request_treatment |
| 1377 | reg_process_hint_core(struct regulatory_request *core_request) |
| 1378 | { |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1379 | |
| 1380 | core_request->intersect = false; |
| 1381 | core_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1382 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1383 | reg_update_last_request(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1384 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1385 | return reg_call_crda(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1386 | } |
| 1387 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1388 | static enum reg_request_treatment |
| 1389 | __reg_process_hint_user(struct regulatory_request *user_request) |
| 1390 | { |
| 1391 | struct regulatory_request *lr = get_last_request(); |
| 1392 | |
| 1393 | if (reg_request_cell_base(user_request)) |
| 1394 | return reg_ignore_cell_hint(user_request); |
| 1395 | |
| 1396 | if (reg_request_cell_base(lr)) |
| 1397 | return REG_REQ_IGNORE; |
| 1398 | |
| 1399 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 1400 | return REG_REQ_INTERSECT; |
| 1401 | /* |
| 1402 | * If the user knows better the user should set the regdom |
| 1403 | * to their country before the IE is picked up |
| 1404 | */ |
| 1405 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && |
| 1406 | lr->intersect) |
| 1407 | return REG_REQ_IGNORE; |
| 1408 | /* |
| 1409 | * Process user requests only after previous user/driver/core |
| 1410 | * requests have been processed |
| 1411 | */ |
| 1412 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || |
| 1413 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || |
| 1414 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && |
| 1415 | regdom_changes(lr->alpha2)) |
| 1416 | return REG_REQ_IGNORE; |
| 1417 | |
| 1418 | if (!regdom_changes(user_request->alpha2)) |
| 1419 | return REG_REQ_ALREADY_SET; |
| 1420 | |
| 1421 | return REG_REQ_OK; |
| 1422 | } |
| 1423 | |
| 1424 | /** |
| 1425 | * reg_process_hint_user - process user regulatory requests |
| 1426 | * @user_request: a pending user regulatory request |
| 1427 | * |
| 1428 | * The wireless subsystem can use this function to process |
| 1429 | * a regulatory request initiated by userspace. |
| 1430 | * |
| 1431 | * Returns one of the different reg request treatment values. |
| 1432 | */ |
| 1433 | static enum reg_request_treatment |
| 1434 | reg_process_hint_user(struct regulatory_request *user_request) |
| 1435 | { |
| 1436 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1437 | |
| 1438 | treatment = __reg_process_hint_user(user_request); |
| 1439 | if (treatment == REG_REQ_IGNORE || |
| 1440 | treatment == REG_REQ_ALREADY_SET) { |
| 1441 | kfree(user_request); |
| 1442 | return treatment; |
| 1443 | } |
| 1444 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1445 | user_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1446 | user_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1447 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1448 | reg_update_last_request(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1449 | |
| 1450 | user_alpha2[0] = user_request->alpha2[0]; |
| 1451 | user_alpha2[1] = user_request->alpha2[1]; |
| 1452 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1453 | return reg_call_crda(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1454 | } |
| 1455 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1456 | static enum reg_request_treatment |
| 1457 | __reg_process_hint_driver(struct regulatory_request *driver_request) |
| 1458 | { |
| 1459 | struct regulatory_request *lr = get_last_request(); |
| 1460 | |
| 1461 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { |
| 1462 | if (regdom_changes(driver_request->alpha2)) |
| 1463 | return REG_REQ_OK; |
| 1464 | return REG_REQ_ALREADY_SET; |
| 1465 | } |
| 1466 | |
| 1467 | /* |
| 1468 | * This would happen if you unplug and plug your card |
| 1469 | * back in or if you add a new device for which the previously |
| 1470 | * loaded card also agrees on the regulatory domain. |
| 1471 | */ |
| 1472 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 1473 | !regdom_changes(driver_request->alpha2)) |
| 1474 | return REG_REQ_ALREADY_SET; |
| 1475 | |
| 1476 | return REG_REQ_INTERSECT; |
| 1477 | } |
| 1478 | |
| 1479 | /** |
| 1480 | * reg_process_hint_driver - process driver regulatory requests |
| 1481 | * @driver_request: a pending driver regulatory request |
| 1482 | * |
| 1483 | * The wireless subsystem can use this function to process |
| 1484 | * a regulatory request issued by an 802.11 driver. |
| 1485 | * |
| 1486 | * Returns one of the different reg request treatment values. |
| 1487 | */ |
| 1488 | static enum reg_request_treatment |
| 1489 | reg_process_hint_driver(struct wiphy *wiphy, |
| 1490 | struct regulatory_request *driver_request) |
| 1491 | { |
| 1492 | const struct ieee80211_regdomain *regd; |
| 1493 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1494 | |
| 1495 | treatment = __reg_process_hint_driver(driver_request); |
| 1496 | |
| 1497 | switch (treatment) { |
| 1498 | case REG_REQ_OK: |
| 1499 | break; |
| 1500 | case REG_REQ_IGNORE: |
| 1501 | kfree(driver_request); |
| 1502 | return treatment; |
| 1503 | case REG_REQ_INTERSECT: |
| 1504 | /* fall through */ |
| 1505 | case REG_REQ_ALREADY_SET: |
| 1506 | regd = reg_copy_regd(get_cfg80211_regdom()); |
| 1507 | if (IS_ERR(regd)) { |
| 1508 | kfree(driver_request); |
| 1509 | return REG_REQ_IGNORE; |
| 1510 | } |
| 1511 | rcu_assign_pointer(wiphy->regd, regd); |
| 1512 | } |
| 1513 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1514 | |
| 1515 | driver_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1516 | driver_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1517 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1518 | reg_update_last_request(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1519 | |
| 1520 | /* |
| 1521 | * Since CRDA will not be called in this case as we already |
| 1522 | * have applied the requested regulatory domain before we just |
| 1523 | * inform userspace we have processed the request |
| 1524 | */ |
| 1525 | if (treatment == REG_REQ_ALREADY_SET) { |
| 1526 | nl80211_send_reg_change_event(driver_request); |
| 1527 | reg_set_request_processed(); |
| 1528 | return treatment; |
| 1529 | } |
| 1530 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1531 | return reg_call_crda(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1532 | } |
| 1533 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1534 | static enum reg_request_treatment |
| 1535 | __reg_process_hint_country_ie(struct wiphy *wiphy, |
| 1536 | struct regulatory_request *country_ie_request) |
| 1537 | { |
| 1538 | struct wiphy *last_wiphy = NULL; |
| 1539 | struct regulatory_request *lr = get_last_request(); |
| 1540 | |
| 1541 | if (reg_request_cell_base(lr)) { |
| 1542 | /* Trust a Cell base station over the AP's country IE */ |
| 1543 | if (regdom_changes(country_ie_request->alpha2)) |
| 1544 | return REG_REQ_IGNORE; |
| 1545 | return REG_REQ_ALREADY_SET; |
| 1546 | } |
| 1547 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1548 | if (unlikely(!is_an_alpha2(country_ie_request->alpha2))) |
| 1549 | return -EINVAL; |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1550 | |
| 1551 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 1552 | return REG_REQ_OK; |
| 1553 | |
| 1554 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
| 1555 | |
| 1556 | if (last_wiphy != wiphy) { |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1557 | /* |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1558 | * Two cards with two APs claiming different |
| 1559 | * Country IE alpha2s. We could |
| 1560 | * intersect them, but that seems unlikely |
| 1561 | * to be correct. Reject second one for now. |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1562 | */ |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1563 | if (regdom_changes(country_ie_request->alpha2)) |
| 1564 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1565 | return REG_REQ_ALREADY_SET; |
| 1566 | } |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1567 | /* |
| 1568 | * Two consecutive Country IE hints on the same wiphy. |
| 1569 | * This should be picked up early by the driver/stack |
| 1570 | */ |
| 1571 | if (WARN_ON(regdom_changes(country_ie_request->alpha2))) |
| 1572 | return REG_REQ_OK; |
| 1573 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1574 | } |
| 1575 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1576 | /** |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1577 | * reg_process_hint_country_ie - process regulatory requests from country IEs |
| 1578 | * @country_ie_request: a regulatory request from a country IE |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1579 | * |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1580 | * The wireless subsystem can use this function to process |
| 1581 | * a regulatory request issued by a country Information Element. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1582 | * |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1583 | * Returns one of the different reg request treatment values. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1584 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1585 | static enum reg_request_treatment |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1586 | reg_process_hint_country_ie(struct wiphy *wiphy, |
| 1587 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1588 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1589 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1590 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1591 | treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 1592 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1593 | switch (treatment) { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1594 | case REG_REQ_OK: |
| 1595 | break; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1596 | case REG_REQ_IGNORE: |
| 1597 | /* fall through */ |
| 1598 | case REG_REQ_ALREADY_SET: |
| 1599 | kfree(country_ie_request); |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1600 | return treatment; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1601 | case REG_REQ_INTERSECT: |
| 1602 | kfree(country_ie_request); |
| 1603 | /* |
| 1604 | * This doesn't happen yet, not sure we |
| 1605 | * ever want to support it for this case. |
| 1606 | */ |
| 1607 | WARN_ONCE(1, "Unexpected intersection for country IEs"); |
| 1608 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1609 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1610 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1611 | country_ie_request->intersect = false; |
| 1612 | country_ie_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1613 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1614 | reg_update_last_request(country_ie_request); |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1615 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1616 | return reg_call_crda(country_ie_request); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1617 | } |
| 1618 | |
Luis R. Rodriguez | 30a548c | 2009-05-02 01:17:27 -0400 | [diff] [blame] | 1619 | /* This processes *all* regulatory hints */ |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 1620 | static void reg_process_hint(struct regulatory_request *reg_request) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1621 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1622 | struct wiphy *wiphy = NULL; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1623 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1624 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1625 | if (WARN_ON(!reg_request->alpha2)) |
| 1626 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1627 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1628 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1629 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
| 1630 | |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 1631 | if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && !wiphy) { |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1632 | kfree(reg_request); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1633 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1634 | } |
| 1635 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1636 | switch (reg_request->initiator) { |
| 1637 | case NL80211_REGDOM_SET_BY_CORE: |
| 1638 | reg_process_hint_core(reg_request); |
| 1639 | return; |
| 1640 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1641 | treatment = reg_process_hint_user(reg_request); |
| 1642 | if (treatment == REG_REQ_OK || |
| 1643 | treatment == REG_REQ_ALREADY_SET) |
| 1644 | return; |
| 1645 | schedule_delayed_work(®_timeout, msecs_to_jiffies(3142)); |
| 1646 | return; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1647 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1648 | treatment = reg_process_hint_driver(wiphy, reg_request); |
| 1649 | break; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1650 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1651 | treatment = reg_process_hint_country_ie(wiphy, reg_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1652 | break; |
| 1653 | default: |
| 1654 | WARN(1, "invalid initiator %d\n", reg_request->initiator); |
| 1655 | return; |
| 1656 | } |
| 1657 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1658 | /* This is required so that the orig_* parameters are saved */ |
| 1659 | if (treatment == REG_REQ_ALREADY_SET && wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1660 | wiphy->regulatory_flags & REGULATORY_STRICT_REG) |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1661 | wiphy_update_regulatory(wiphy, reg_request->initiator); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1662 | } |
| 1663 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1664 | /* |
| 1665 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* |
| 1666 | * Regulatory hints come on a first come first serve basis and we |
| 1667 | * must process each one atomically. |
| 1668 | */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1669 | static void reg_process_pending_hints(void) |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1670 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1671 | struct regulatory_request *reg_request, *lr; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1672 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1673 | lr = get_last_request(); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1674 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1675 | /* When last_request->processed becomes true this will be rescheduled */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1676 | if (lr && !lr->processed) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1677 | REG_DBG_PRINT("Pending regulatory request, waiting for it to be processed...\n"); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1678 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1679 | } |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1680 | |
| 1681 | spin_lock(®_requests_lock); |
| 1682 | |
| 1683 | if (list_empty(®_requests_list)) { |
| 1684 | spin_unlock(®_requests_lock); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1685 | return; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1686 | } |
| 1687 | |
| 1688 | reg_request = list_first_entry(®_requests_list, |
| 1689 | struct regulatory_request, |
| 1690 | list); |
| 1691 | list_del_init(®_request->list); |
| 1692 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1693 | spin_unlock(®_requests_lock); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1694 | |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 1695 | reg_process_hint(reg_request); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1696 | } |
| 1697 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1698 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
| 1699 | static void reg_process_pending_beacon_hints(void) |
| 1700 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1701 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1702 | struct reg_beacon *pending_beacon, *tmp; |
| 1703 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1704 | /* This goes through the _pending_ beacon list */ |
| 1705 | spin_lock_bh(®_pending_beacons_lock); |
| 1706 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1707 | list_for_each_entry_safe(pending_beacon, tmp, |
| 1708 | ®_pending_beacons, list) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1709 | list_del_init(&pending_beacon->list); |
| 1710 | |
| 1711 | /* Applies the beacon hint to current wiphys */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1712 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
| 1713 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1714 | |
| 1715 | /* Remembers the beacon hint for new wiphys or reg changes */ |
| 1716 | list_add_tail(&pending_beacon->list, ®_beacon_list); |
| 1717 | } |
| 1718 | |
| 1719 | spin_unlock_bh(®_pending_beacons_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1720 | } |
| 1721 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1722 | static void reg_todo(struct work_struct *work) |
| 1723 | { |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1724 | rtnl_lock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1725 | reg_process_pending_hints(); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1726 | reg_process_pending_beacon_hints(); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1727 | rtnl_unlock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1728 | } |
| 1729 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1730 | static void queue_regulatory_request(struct regulatory_request *request) |
| 1731 | { |
Johannes Berg | d4f2c88 | 2012-12-03 18:59:58 +0100 | [diff] [blame] | 1732 | request->alpha2[0] = toupper(request->alpha2[0]); |
| 1733 | request->alpha2[1] = toupper(request->alpha2[1]); |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 1734 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1735 | spin_lock(®_requests_lock); |
| 1736 | list_add_tail(&request->list, ®_requests_list); |
| 1737 | spin_unlock(®_requests_lock); |
| 1738 | |
| 1739 | schedule_work(®_work); |
| 1740 | } |
| 1741 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1742 | /* |
| 1743 | * Core regulatory hint -- happens during cfg80211_init() |
| 1744 | * and when we restore regulatory settings. |
| 1745 | */ |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1746 | static int regulatory_hint_core(const char *alpha2) |
| 1747 | { |
| 1748 | struct regulatory_request *request; |
| 1749 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1750 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1751 | if (!request) |
| 1752 | return -ENOMEM; |
| 1753 | |
| 1754 | request->alpha2[0] = alpha2[0]; |
| 1755 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1756 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1757 | |
Luis R. Rodriguez | 31e9972 | 2010-11-17 21:46:06 -0800 | [diff] [blame] | 1758 | queue_regulatory_request(request); |
Luis R. Rodriguez | 5078b2e | 2009-05-13 17:04:42 -0400 | [diff] [blame] | 1759 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1760 | return 0; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1761 | } |
| 1762 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1763 | /* User hints */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1764 | int regulatory_hint_user(const char *alpha2, |
| 1765 | enum nl80211_user_reg_hint_type user_reg_hint_type) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1766 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1767 | struct regulatory_request *request; |
| 1768 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1769 | if (WARN_ON(!alpha2)) |
| 1770 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1771 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1772 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1773 | if (!request) |
| 1774 | return -ENOMEM; |
| 1775 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1776 | request->wiphy_idx = WIPHY_IDX_INVALID; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1777 | request->alpha2[0] = alpha2[0]; |
| 1778 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | e12822e | 2010-01-04 11:37:39 -0500 | [diff] [blame] | 1779 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1780 | request->user_reg_hint_type = user_reg_hint_type; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1781 | |
| 1782 | queue_regulatory_request(request); |
| 1783 | |
| 1784 | return 0; |
| 1785 | } |
| 1786 | |
| 1787 | /* Driver hints */ |
| 1788 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) |
| 1789 | { |
| 1790 | struct regulatory_request *request; |
| 1791 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1792 | if (WARN_ON(!alpha2 || !wiphy)) |
| 1793 | return -EINVAL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1794 | |
| 1795 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1796 | if (!request) |
| 1797 | return -ENOMEM; |
| 1798 | |
| 1799 | request->wiphy_idx = get_wiphy_idx(wiphy); |
| 1800 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1801 | request->alpha2[0] = alpha2[0]; |
| 1802 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1803 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1804 | |
| 1805 | queue_regulatory_request(request); |
| 1806 | |
| 1807 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1808 | } |
| 1809 | EXPORT_SYMBOL(regulatory_hint); |
| 1810 | |
Luis R. Rodriguez | 789fd03 | 2013-10-04 18:07:24 -0700 | [diff] [blame] | 1811 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band, |
| 1812 | const u8 *country_ie, u8 country_ie_len) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1813 | { |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1814 | char alpha2[2]; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1815 | enum environment_cap env = ENVIRON_ANY; |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1816 | struct regulatory_request *request = NULL, *lr; |
Luis R. Rodriguez | d335fe6 | 2009-02-21 00:04:27 -0500 | [diff] [blame] | 1817 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1818 | /* IE len must be evenly divisible by 2 */ |
| 1819 | if (country_ie_len & 0x01) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1820 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1821 | |
| 1822 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1823 | return; |
| 1824 | |
| 1825 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 1826 | if (!request) |
| 1827 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1828 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1829 | alpha2[0] = country_ie[0]; |
| 1830 | alpha2[1] = country_ie[1]; |
| 1831 | |
| 1832 | if (country_ie[2] == 'I') |
| 1833 | env = ENVIRON_INDOOR; |
| 1834 | else if (country_ie[2] == 'O') |
| 1835 | env = ENVIRON_OUTDOOR; |
| 1836 | |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1837 | rcu_read_lock(); |
| 1838 | lr = get_last_request(); |
| 1839 | |
| 1840 | if (unlikely(!lr)) |
| 1841 | goto out; |
| 1842 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1843 | /* |
Luis R. Rodriguez | 8b19e6c | 2009-07-30 17:38:09 -0700 | [diff] [blame] | 1844 | * We will run this only upon a successful connection on cfg80211. |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1845 | * We leave conflict resolution to the workqueue, where can hold |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1846 | * the RTNL. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1847 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1848 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 1849 | lr->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1850 | goto out; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1851 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1852 | request->wiphy_idx = get_wiphy_idx(wiphy); |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 1853 | request->alpha2[0] = alpha2[0]; |
| 1854 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1855 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1856 | request->country_ie_env = env; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1857 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1858 | queue_regulatory_request(request); |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1859 | request = NULL; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1860 | out: |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1861 | kfree(request); |
| 1862 | rcu_read_unlock(); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1863 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1864 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1865 | static void restore_alpha2(char *alpha2, bool reset_user) |
| 1866 | { |
| 1867 | /* indicates there is no alpha2 to consider for restoration */ |
| 1868 | alpha2[0] = '9'; |
| 1869 | alpha2[1] = '7'; |
| 1870 | |
| 1871 | /* The user setting has precedence over the module parameter */ |
| 1872 | if (is_user_regdom_saved()) { |
| 1873 | /* Unless we're asked to ignore it and reset it */ |
| 1874 | if (reset_user) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1875 | REG_DBG_PRINT("Restoring regulatory settings including user preference\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1876 | user_alpha2[0] = '9'; |
| 1877 | user_alpha2[1] = '7'; |
| 1878 | |
| 1879 | /* |
| 1880 | * If we're ignoring user settings, we still need to |
| 1881 | * check the module parameter to ensure we put things |
| 1882 | * back as they were for a full restore. |
| 1883 | */ |
| 1884 | if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1885 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1886 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1887 | alpha2[0] = ieee80211_regdom[0]; |
| 1888 | alpha2[1] = ieee80211_regdom[1]; |
| 1889 | } |
| 1890 | } else { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1891 | REG_DBG_PRINT("Restoring regulatory settings while preserving user preference for: %c%c\n", |
| 1892 | user_alpha2[0], user_alpha2[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1893 | alpha2[0] = user_alpha2[0]; |
| 1894 | alpha2[1] = user_alpha2[1]; |
| 1895 | } |
| 1896 | } else if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1897 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1898 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1899 | alpha2[0] = ieee80211_regdom[0]; |
| 1900 | alpha2[1] = ieee80211_regdom[1]; |
| 1901 | } else |
Luis R. Rodriguez | d91e41b | 2010-10-20 10:18:59 -0700 | [diff] [blame] | 1902 | REG_DBG_PRINT("Restoring regulatory settings\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1903 | } |
| 1904 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1905 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
| 1906 | { |
| 1907 | struct ieee80211_supported_band *sband; |
| 1908 | enum ieee80211_band band; |
| 1909 | struct ieee80211_channel *chan; |
| 1910 | int i; |
| 1911 | |
| 1912 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1913 | sband = wiphy->bands[band]; |
| 1914 | if (!sband) |
| 1915 | continue; |
| 1916 | for (i = 0; i < sband->n_channels; i++) { |
| 1917 | chan = &sband->channels[i]; |
| 1918 | chan->flags = chan->orig_flags; |
| 1919 | chan->max_antenna_gain = chan->orig_mag; |
| 1920 | chan->max_power = chan->orig_mpwr; |
Paul Stewart | 899852a | 2012-08-01 16:54:42 -0700 | [diff] [blame] | 1921 | chan->beacon_found = false; |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1922 | } |
| 1923 | } |
| 1924 | } |
| 1925 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1926 | /* |
| 1927 | * Restoring regulatory settings involves ingoring any |
| 1928 | * possibly stale country IE information and user regulatory |
| 1929 | * settings if so desired, this includes any beacon hints |
| 1930 | * learned as we could have traveled outside to another country |
| 1931 | * after disconnection. To restore regulatory settings we do |
| 1932 | * exactly what we did at bootup: |
| 1933 | * |
| 1934 | * - send a core regulatory hint |
| 1935 | * - send a user regulatory hint if applicable |
| 1936 | * |
| 1937 | * Device drivers that send a regulatory hint for a specific country |
| 1938 | * keep their own regulatory domain on wiphy->regd so that does does |
| 1939 | * not need to be remembered. |
| 1940 | */ |
| 1941 | static void restore_regulatory_settings(bool reset_user) |
| 1942 | { |
| 1943 | char alpha2[2]; |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 1944 | char world_alpha2[2]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1945 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1946 | struct regulatory_request *reg_request, *tmp; |
| 1947 | LIST_HEAD(tmp_reg_req_list); |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1948 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1949 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1950 | ASSERT_RTNL(); |
| 1951 | |
Johannes Berg | 2d31986 | 2013-01-09 12:01:38 +0100 | [diff] [blame] | 1952 | reset_regdomains(true, &world_regdom); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1953 | restore_alpha2(alpha2, reset_user); |
| 1954 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1955 | /* |
| 1956 | * If there's any pending requests we simply |
| 1957 | * stash them to a temporary pending queue and |
| 1958 | * add then after we've restored regulatory |
| 1959 | * settings. |
| 1960 | */ |
| 1961 | spin_lock(®_requests_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1962 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 1963 | if (reg_request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 1964 | continue; |
| 1965 | list_move_tail(®_request->list, &tmp_reg_req_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1966 | } |
| 1967 | spin_unlock(®_requests_lock); |
| 1968 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1969 | /* Clear beacon hints */ |
| 1970 | spin_lock_bh(®_pending_beacons_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1971 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 1972 | list_del(®_beacon->list); |
| 1973 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1974 | } |
| 1975 | spin_unlock_bh(®_pending_beacons_lock); |
| 1976 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1977 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 1978 | list_del(®_beacon->list); |
| 1979 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1980 | } |
| 1981 | |
| 1982 | /* First restore to the basic regulatory settings */ |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 1983 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
| 1984 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1985 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1986 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1987 | if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG) |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1988 | restore_custom_reg_settings(&rdev->wiphy); |
| 1989 | } |
| 1990 | |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 1991 | regulatory_hint_core(world_alpha2); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1992 | |
| 1993 | /* |
| 1994 | * This restores the ieee80211_regdom module parameter |
| 1995 | * preference or the last user requested regulatory |
| 1996 | * settings, user regulatory settings takes precedence. |
| 1997 | */ |
| 1998 | if (is_an_alpha2(alpha2)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1999 | regulatory_hint_user(user_alpha2, NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2000 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2001 | spin_lock(®_requests_lock); |
Johannes Berg | 11cff96 | 2012-12-03 18:56:41 +0100 | [diff] [blame] | 2002 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2003 | spin_unlock(®_requests_lock); |
| 2004 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2005 | REG_DBG_PRINT("Kicking the queue\n"); |
| 2006 | |
| 2007 | schedule_work(®_work); |
| 2008 | } |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2009 | |
| 2010 | void regulatory_hint_disconnect(void) |
| 2011 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2012 | REG_DBG_PRINT("All devices are disconnected, going to restore regulatory settings\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2013 | restore_regulatory_settings(false); |
| 2014 | } |
| 2015 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2016 | static bool freq_is_chan_12_13_14(u16 freq) |
| 2017 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 2018 | if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) || |
| 2019 | freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) || |
| 2020 | freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ)) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2021 | return true; |
| 2022 | return false; |
| 2023 | } |
| 2024 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2025 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
| 2026 | { |
| 2027 | struct reg_beacon *pending_beacon; |
| 2028 | |
| 2029 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) |
| 2030 | if (beacon_chan->center_freq == |
| 2031 | pending_beacon->chan.center_freq) |
| 2032 | return true; |
| 2033 | return false; |
| 2034 | } |
| 2035 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2036 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
| 2037 | struct ieee80211_channel *beacon_chan, |
| 2038 | gfp_t gfp) |
| 2039 | { |
| 2040 | struct reg_beacon *reg_beacon; |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2041 | bool processing; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2042 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2043 | if (beacon_chan->beacon_found || |
| 2044 | beacon_chan->flags & IEEE80211_CHAN_RADAR || |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2045 | (beacon_chan->band == IEEE80211_BAND_2GHZ && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2046 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2047 | return 0; |
| 2048 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2049 | spin_lock_bh(®_pending_beacons_lock); |
| 2050 | processing = pending_reg_beacon(beacon_chan); |
| 2051 | spin_unlock_bh(®_pending_beacons_lock); |
| 2052 | |
| 2053 | if (processing) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2054 | return 0; |
| 2055 | |
| 2056 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); |
| 2057 | if (!reg_beacon) |
| 2058 | return -ENOMEM; |
| 2059 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2060 | REG_DBG_PRINT("Found new beacon on frequency: %d MHz (Ch %d) on %s\n", |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 2061 | beacon_chan->center_freq, |
| 2062 | ieee80211_frequency_to_channel(beacon_chan->center_freq), |
| 2063 | wiphy_name(wiphy)); |
| 2064 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2065 | memcpy(®_beacon->chan, beacon_chan, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2066 | sizeof(struct ieee80211_channel)); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2067 | |
| 2068 | /* |
| 2069 | * Since we can be called from BH or and non-BH context |
| 2070 | * we must use spin_lock_bh() |
| 2071 | */ |
| 2072 | spin_lock_bh(®_pending_beacons_lock); |
| 2073 | list_add_tail(®_beacon->list, ®_pending_beacons); |
| 2074 | spin_unlock_bh(®_pending_beacons_lock); |
| 2075 | |
| 2076 | schedule_work(®_work); |
| 2077 | |
| 2078 | return 0; |
| 2079 | } |
| 2080 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2081 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2082 | { |
| 2083 | unsigned int i; |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2084 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 2085 | const struct ieee80211_freq_range *freq_range = NULL; |
| 2086 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2087 | |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2088 | pr_info(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2089 | |
| 2090 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 2091 | reg_rule = &rd->reg_rules[i]; |
| 2092 | freq_range = ®_rule->freq_range; |
| 2093 | power_rule = ®_rule->power_rule; |
| 2094 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2095 | /* |
| 2096 | * There may not be documentation for max antenna gain |
| 2097 | * in certain regions |
| 2098 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2099 | if (power_rule->max_antenna_gain) |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2100 | pr_info(" (%d KHz - %d KHz @ %d KHz), (%d mBi, %d mBm)\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2101 | freq_range->start_freq_khz, |
| 2102 | freq_range->end_freq_khz, |
| 2103 | freq_range->max_bandwidth_khz, |
| 2104 | power_rule->max_antenna_gain, |
| 2105 | power_rule->max_eirp); |
| 2106 | else |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2107 | pr_info(" (%d KHz - %d KHz @ %d KHz), (N/A, %d mBm)\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2108 | freq_range->start_freq_khz, |
| 2109 | freq_range->end_freq_khz, |
| 2110 | freq_range->max_bandwidth_khz, |
| 2111 | power_rule->max_eirp); |
| 2112 | } |
| 2113 | } |
| 2114 | |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2115 | bool reg_supported_dfs_region(u8 dfs_region) |
| 2116 | { |
| 2117 | switch (dfs_region) { |
| 2118 | case NL80211_DFS_UNSET: |
| 2119 | case NL80211_DFS_FCC: |
| 2120 | case NL80211_DFS_ETSI: |
| 2121 | case NL80211_DFS_JP: |
| 2122 | return true; |
| 2123 | default: |
| 2124 | REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n", |
| 2125 | dfs_region); |
| 2126 | return false; |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | static void print_dfs_region(u8 dfs_region) |
| 2131 | { |
| 2132 | if (!dfs_region) |
| 2133 | return; |
| 2134 | |
| 2135 | switch (dfs_region) { |
| 2136 | case NL80211_DFS_FCC: |
| 2137 | pr_info(" DFS Master region FCC"); |
| 2138 | break; |
| 2139 | case NL80211_DFS_ETSI: |
| 2140 | pr_info(" DFS Master region ETSI"); |
| 2141 | break; |
| 2142 | case NL80211_DFS_JP: |
| 2143 | pr_info(" DFS Master region JP"); |
| 2144 | break; |
| 2145 | default: |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2146 | pr_info(" DFS Master region Unknown"); |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2147 | break; |
| 2148 | } |
| 2149 | } |
| 2150 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2151 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2152 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2153 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2154 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2155 | if (is_intersected_alpha2(rd->alpha2)) { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2156 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2157 | struct cfg80211_registered_device *rdev; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2158 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2159 | if (rdev) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2160 | pr_info("Current regulatory domain updated by AP to: %c%c\n", |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2161 | rdev->country_ie_alpha2[0], |
| 2162 | rdev->country_ie_alpha2[1]); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2163 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2164 | pr_info("Current regulatory domain intersected:\n"); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2165 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2166 | pr_info("Current regulatory domain intersected:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2167 | } else if (is_world_regdom(rd->alpha2)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2168 | pr_info("World regulatory domain updated:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2169 | } else { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2170 | if (is_unknown_alpha2(rd->alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2171 | pr_info("Regulatory domain changed to driver built-in settings (unknown country)\n"); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2172 | else { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2173 | if (reg_request_cell_base(lr)) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2174 | pr_info("Regulatory domain changed to country: %c%c by Cell Station\n", |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2175 | rd->alpha2[0], rd->alpha2[1]); |
| 2176 | else |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2177 | pr_info("Regulatory domain changed to country: %c%c\n", |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2178 | rd->alpha2[0], rd->alpha2[1]); |
| 2179 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2180 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2181 | |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2182 | print_dfs_region(rd->dfs_region); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2183 | print_rd_rules(rd); |
| 2184 | } |
| 2185 | |
Johannes Berg | 2df7816 | 2008-10-28 16:49:41 +0100 | [diff] [blame] | 2186 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2187 | { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2188 | pr_info("Regulatory domain: %c%c\n", rd->alpha2[0], rd->alpha2[1]); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2189 | print_rd_rules(rd); |
| 2190 | } |
| 2191 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2192 | static int reg_set_rd_core(const struct ieee80211_regdomain *rd) |
| 2193 | { |
| 2194 | if (!is_world_regdom(rd->alpha2)) |
| 2195 | return -EINVAL; |
| 2196 | update_world_regdomain(rd); |
| 2197 | return 0; |
| 2198 | } |
| 2199 | |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2200 | static int reg_set_rd_user(const struct ieee80211_regdomain *rd, |
| 2201 | struct regulatory_request *user_request) |
| 2202 | { |
| 2203 | const struct ieee80211_regdomain *intersected_rd = NULL; |
| 2204 | |
| 2205 | if (is_world_regdom(rd->alpha2)) |
| 2206 | return -EINVAL; |
| 2207 | |
| 2208 | if (!regdom_changes(rd->alpha2)) |
| 2209 | return -EALREADY; |
| 2210 | |
| 2211 | if (!is_valid_rd(rd)) { |
| 2212 | pr_err("Invalid regulatory domain detected:\n"); |
| 2213 | print_regdomain_info(rd); |
| 2214 | return -EINVAL; |
| 2215 | } |
| 2216 | |
| 2217 | if (!user_request->intersect) { |
| 2218 | reset_regdomains(false, rd); |
| 2219 | return 0; |
| 2220 | } |
| 2221 | |
| 2222 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2223 | if (!intersected_rd) |
| 2224 | return -EINVAL; |
| 2225 | |
| 2226 | kfree(rd); |
| 2227 | rd = NULL; |
| 2228 | reset_regdomains(false, intersected_rd); |
| 2229 | |
| 2230 | return 0; |
| 2231 | } |
| 2232 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2233 | static int reg_set_rd_driver(const struct ieee80211_regdomain *rd, |
| 2234 | struct regulatory_request *driver_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2235 | { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2236 | const struct ieee80211_regdomain *regd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2237 | const struct ieee80211_regdomain *intersected_rd = NULL; |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2238 | const struct ieee80211_regdomain *tmp; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2239 | struct wiphy *request_wiphy; |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 2240 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2241 | if (is_world_regdom(rd->alpha2)) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2242 | return -EINVAL; |
| 2243 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2244 | if (!regdom_changes(rd->alpha2)) |
| 2245 | return -EALREADY; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2246 | |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2247 | if (!is_valid_rd(rd)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2248 | pr_err("Invalid regulatory domain detected:\n"); |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2249 | print_regdomain_info(rd); |
| 2250 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2251 | } |
| 2252 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2253 | request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx); |
| 2254 | if (!request_wiphy) { |
Luis R. Rodriguez | 0bac71a | 2011-11-28 16:47:16 -0500 | [diff] [blame] | 2255 | schedule_delayed_work(®_timeout, 0); |
Johannes Berg | de3584b | 2011-11-21 10:44:00 +0100 | [diff] [blame] | 2256 | return -ENODEV; |
| 2257 | } |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2258 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2259 | if (!driver_request->intersect) { |
Luis R. Rodriguez | 558f6d3 | 2009-06-08 18:54:37 -0700 | [diff] [blame] | 2260 | if (request_wiphy->regd) |
| 2261 | return -EALREADY; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2262 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2263 | regd = reg_copy_regd(rd); |
| 2264 | if (IS_ERR(regd)) |
| 2265 | return PTR_ERR(regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2266 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2267 | rcu_assign_pointer(request_wiphy->regd, regd); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2268 | reset_regdomains(false, rd); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2269 | return 0; |
| 2270 | } |
| 2271 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2272 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2273 | if (!intersected_rd) |
| 2274 | return -EINVAL; |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2275 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2276 | /* |
| 2277 | * We can trash what CRDA provided now. |
| 2278 | * However if a driver requested this specific regulatory |
| 2279 | * domain we keep it for its private use |
| 2280 | */ |
| 2281 | tmp = get_wiphy_regdom(request_wiphy); |
| 2282 | rcu_assign_pointer(request_wiphy->regd, rd); |
| 2283 | rcu_free_regdom(tmp); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2284 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2285 | rd = NULL; |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2286 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2287 | reset_regdomains(false, intersected_rd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2288 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2289 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2290 | } |
| 2291 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2292 | static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd, |
| 2293 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2294 | { |
| 2295 | struct wiphy *request_wiphy; |
| 2296 | |
| 2297 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
| 2298 | !is_unknown_alpha2(rd->alpha2)) |
| 2299 | return -EINVAL; |
| 2300 | |
| 2301 | /* |
| 2302 | * Lets only bother proceeding on the same alpha2 if the current |
| 2303 | * rd is non static (it means CRDA was present and was used last) |
| 2304 | * and the pending request came in from a country IE |
| 2305 | */ |
| 2306 | |
| 2307 | if (!is_valid_rd(rd)) { |
| 2308 | pr_err("Invalid regulatory domain detected:\n"); |
| 2309 | print_regdomain_info(rd); |
| 2310 | return -EINVAL; |
| 2311 | } |
| 2312 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2313 | request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx); |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2314 | if (!request_wiphy) { |
| 2315 | schedule_delayed_work(®_timeout, 0); |
| 2316 | return -ENODEV; |
| 2317 | } |
| 2318 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2319 | if (country_ie_request->intersect) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2320 | return -EINVAL; |
| 2321 | |
| 2322 | reset_regdomains(false, rd); |
| 2323 | return 0; |
| 2324 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2325 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2326 | /* |
| 2327 | * Use this call to set the current regulatory domain. Conflicts with |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2328 | * multiple drivers can be ironed out later. Caller must've already |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2329 | * kmalloc'd the rd structure. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2330 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2331 | int set_regdom(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2332 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2333 | struct regulatory_request *lr; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2334 | int r; |
| 2335 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2336 | if (!reg_is_valid_request(rd->alpha2)) { |
| 2337 | kfree(rd); |
| 2338 | return -EINVAL; |
| 2339 | } |
| 2340 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2341 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2342 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2343 | /* Note that this doesn't update the wiphys, this is done below */ |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2344 | switch (lr->initiator) { |
| 2345 | case NL80211_REGDOM_SET_BY_CORE: |
| 2346 | r = reg_set_rd_core(rd); |
| 2347 | break; |
| 2348 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2349 | r = reg_set_rd_user(rd, lr); |
| 2350 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2351 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2352 | r = reg_set_rd_driver(rd, lr); |
| 2353 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2354 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2355 | r = reg_set_rd_country_ie(rd, lr); |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2356 | break; |
| 2357 | default: |
| 2358 | WARN(1, "invalid initiator %d\n", lr->initiator); |
| 2359 | return -EINVAL; |
| 2360 | } |
| 2361 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2362 | if (r) { |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2363 | if (r == -EALREADY) |
| 2364 | reg_set_request_processed(); |
| 2365 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2366 | kfree(rd); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2367 | return r; |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2368 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2369 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2370 | /* This would make this whole thing pointless */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2371 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
| 2372 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2373 | |
| 2374 | /* update all wiphys now with the new established regulatory domain */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2375 | update_all_wiphy_regulatory(lr->initiator); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2376 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2377 | print_regdomain(get_cfg80211_regdom()); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2378 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2379 | nl80211_send_reg_change_event(lr); |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 2380 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2381 | reg_set_request_processed(); |
| 2382 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2383 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2384 | } |
| 2385 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2386 | int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
| 2387 | { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2388 | struct regulatory_request *lr; |
| 2389 | u8 alpha2[2]; |
| 2390 | bool add = false; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2391 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2392 | rcu_read_lock(); |
| 2393 | lr = get_last_request(); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2394 | if (lr && !lr->processed) { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2395 | memcpy(alpha2, lr->alpha2, 2); |
| 2396 | add = true; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2397 | } |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2398 | rcu_read_unlock(); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2399 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2400 | if (add) |
| 2401 | return add_uevent_var(env, "COUNTRY=%c%c", |
| 2402 | alpha2[0], alpha2[1]); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2403 | return 0; |
| 2404 | } |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2405 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2406 | void wiphy_regulatory_register(struct wiphy *wiphy) |
| 2407 | { |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2408 | struct regulatory_request *lr; |
| 2409 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2410 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2411 | reg_num_devs_support_basehint++; |
| 2412 | |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2413 | lr = get_last_request(); |
| 2414 | wiphy_update_regulatory(wiphy, lr->initiator); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2415 | } |
| 2416 | |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 2417 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2418 | { |
Luis R. Rodriguez | 0ad8aca | 2009-03-24 21:21:08 -0400 | [diff] [blame] | 2419 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2420 | struct regulatory_request *lr; |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 2421 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2422 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2423 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2424 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2425 | reg_num_devs_support_basehint--; |
| 2426 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2427 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
| 2428 | rcu_assign_pointer(wiphy->regd, NULL); |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2429 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2430 | if (lr) |
| 2431 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2432 | |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2433 | if (!request_wiphy || request_wiphy != wiphy) |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2434 | return; |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2435 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2436 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
| 2437 | lr->country_ie_env = ENVIRON_ANY; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2438 | } |
| 2439 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2440 | static void reg_timeout_work(struct work_struct *work) |
| 2441 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2442 | REG_DBG_PRINT("Timeout while waiting for CRDA to reply, restoring regulatory settings\n"); |
Johannes Berg | f77b86d | 2013-06-24 15:43:38 +0200 | [diff] [blame] | 2443 | rtnl_lock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2444 | restore_regulatory_settings(true); |
Johannes Berg | f77b86d | 2013-06-24 15:43:38 +0200 | [diff] [blame] | 2445 | rtnl_unlock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2446 | } |
| 2447 | |
Uwe Kleine-König | 2fcc9f7 | 2010-06-18 09:38:55 +0200 | [diff] [blame] | 2448 | int __init regulatory_init(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2449 | { |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2450 | int err = 0; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2451 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2452 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); |
| 2453 | if (IS_ERR(reg_pdev)) |
| 2454 | return PTR_ERR(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2455 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2456 | reg_pdev->dev.type = ®_device_type; |
| 2457 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2458 | spin_lock_init(®_requests_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2459 | spin_lock_init(®_pending_beacons_lock); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2460 | |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 2461 | reg_regdb_size_check(); |
| 2462 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2463 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2464 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2465 | user_alpha2[0] = '9'; |
| 2466 | user_alpha2[1] = '7'; |
| 2467 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2468 | /* We always try to get an update for the static regdomain */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2469 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2470 | if (err) { |
| 2471 | if (err == -ENOMEM) |
| 2472 | return err; |
| 2473 | /* |
| 2474 | * N.B. kobject_uevent_env() can fail mainly for when we're out |
| 2475 | * memory which is handled and propagated appropriately above |
| 2476 | * but it can also fail during a netlink_broadcast() or during |
| 2477 | * early boot for call_usermodehelper(). For now treat these |
| 2478 | * errors as non-fatal. |
| 2479 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2480 | pr_err("kobject_uevent_env() was unable to call CRDA during init\n"); |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2481 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2482 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2483 | /* |
| 2484 | * Finally, if the user set the module parameter treat it |
| 2485 | * as a user hint. |
| 2486 | */ |
| 2487 | if (!is_world_regdom(ieee80211_regdom)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2488 | regulatory_hint_user(ieee80211_regdom, |
| 2489 | NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2490 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2491 | return 0; |
| 2492 | } |
| 2493 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2494 | void regulatory_exit(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2495 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2496 | struct regulatory_request *reg_request, *tmp; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2497 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2498 | |
| 2499 | cancel_work_sync(®_work); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2500 | cancel_delayed_work_sync(®_timeout); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2501 | |
Johannes Berg | 9027b14 | 2012-12-03 17:59:24 +0100 | [diff] [blame] | 2502 | /* Lock to suppress warnings */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2503 | rtnl_lock(); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2504 | reset_regdomains(true, NULL); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2505 | rtnl_unlock(); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2506 | |
Luis R. Rodriguez | 58ebacc | 2011-11-08 14:28:06 -0800 | [diff] [blame] | 2507 | dev_set_uevent_suppress(®_pdev->dev, true); |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 2508 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2509 | platform_device_unregister(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2510 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2511 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 2512 | list_del(®_beacon->list); |
| 2513 | kfree(reg_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2514 | } |
| 2515 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2516 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 2517 | list_del(®_beacon->list); |
| 2518 | kfree(reg_beacon); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2519 | } |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2520 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2521 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 2522 | list_del(®_request->list); |
| 2523 | kfree(reg_request); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2524 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2525 | } |